Automotive hinge joint between two vehicle parts and vehicle with such hinge

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to control over articulated frame to allow motion in two wheel tracks and crossing of wheel axles. Vehicle comprises two parts each being coupled with the other hinge 1. Said hinge 1 comprises four structural elements 4, 5, 6, 7 articulated by four hinges 8, 9, 10, 11 to stay in normal position. At said position, centers of hinged 8, 9, 10, 11 form one plane and closed, in fact, fixed frame. Each of two structural elements 4, 6 forming two opposite side of fixed frame can turn in four hinge joints 8, 9, 10, 11 about rotational axis D1, D2. Said axis is located in normal position if the plane formed by two center of hinges relative to other structural elements 5, 7. One (4) of two rotary structural elements 4, 6 with one (5) of two other structural elements 5, 7, directly interconnected with one (10) of four hinges 8, 9, 10, 11, can turn from normal position relative to two structural elements 4, 7 so that center of hinge 10 jointing said two rotary structural elements 4, 5 can extend beyond the plane formed by centers of hinges in normal position while centers of other hinges 8, 9, 11 do not extend beyond said plane to allow crossing of rotational axes D1, D2 of both hinges 4, 6 relative to each other.

EFFECT: improved maneuverability, increased vehicle length.

25 cl, 15 dwg

 

The technical field to which the invention relates.

The invention relates to an articulated configuration to connect two parts of a vehicle in one vehicle management by folding articulated frame with motion in two track and cross-bridges of the vehicle, and vehicle control by folding articulated frame with a similar hinge configuration according to the restrictive part of the independent claims. The invention also concerns a vehicle.

The level of technology

Vehicle management by folding articulated frame are found mainly in the construction and forest harvesting transport technique, which is important for high maneuverability in a minimum of space. In such vehicles with folding swivel joint connected between the two parts of the vehicle, each of which has one bridge. The change of direction occurs due to the rotation in the horizontal plane ("folding") parts of the vehicle together with placed on them by the bridges relative to each other around the center hinge hinge joint that creates depending on the angle regards the PTA more or less arcuate direction.

If such vehicle is running by folding articulated frame there is a necessity of operation with an offset relative to each other in the direction of the longitudinal axis of the vehicle or in the direction of the bridges (the so-called "dog walk"), which, in particular, is common in road rollers for compaction of asphalt, the place of attachment of the folding hinge joint, at least one of the two parts of the vehicle is executed with a possibility of displacement in a horizontal plane transverse to the direction of movement so that the corresponding portion of the vehicle attached to it by a bridge could be moved in a horizontal plane transversely to the direction of motion relative to the folding hinge joint. In addition to this well-known design with dual-folding hinge joint to allow movement in two tracks (so-called "dog walking"). Such dual-folding hinge joints consist of two conventional folding hinge joints, each of which is one half of the hinge arm is connected with one of the two parts of the vehicle, and the second half of the specified distance is connected with the respective other is folding hinge joint.

If, in addition to movement in two tracks (so-called "dog walk") need to be able to cross bridges of the vehicle relative to each other, that is, the turning of the latter relative to each other around an axis of rotation passing in the direction of the longitudinal axis of the vehicle or in the direction of motion, which, in particular, is common in vehicles with large gauge or with a large width of the rim, in the prior art it is known connection folding hinge or double universal joint with one of the parts of the vehicle via the optional swivel, which enables the turning between that part of the vehicle and articulated or double universal joint around the axis of rotation passing in the direction of the longitudinal axis of the vehicle.

Known today vehicles that can operate in the mode of movement in two tracks (so-called "dog walking")and crossed bridges are compared with a simple means of transport management by folding articulated frame or frame with double folding hinge joint the disadvantage that besides folding hinge or double universal joints in them the necessary stage is leitlinie movable configuration, which leads to increased manufacturing and operating costs and inevitably increase the length of the vehicle and thus to reduce maneuverability.

Description of the invention

On this basis, the challenge is to provide such a vehicle with control by folding articulated frame with the possibility of movement in two tracks (so-called "dog walking") and the possibility of crossing bridges, and such hinge configuration to create such a vehicle by connecting the two parts of the vehicle, each of which includes one axle, articulated configuration, which does not have the disadvantages of the prior art or, at least, would exclude them.

This problem is solved by creating an articulated configuration and vehicle management by folding articulated frame according to the independent claims.

The first aspect of the invention relates to an articulated configuration, which two parts of the vehicle, each of which includes connected with it, in particular, the stationary bridge, merge into the vehicle management by folding articulated frame with motion in two tracks (so-called "dog walking") and the possibility of mutual cross the farming bridges. As mentioned above, under the so-called "dog walk" is a mode of operation in which the vehicle is operated with an offset in the direction of the longitudinal axis or direction of movement of the vehicle in the horizontal plane relative to each other by bridges. Under crossed bridges of the vehicle relative to each other is a possibility in which the axles of the vehicle can be rotated relative to each other around the axis, coming in the direction of the longitudinal axis or direction of movement of the vehicle.

The hinge according to this invention includes four structural element, interconnected by means of four articulated joints, each of the four structural elements connects exactly two of the four articulated joints. Structural elements separately performed solely as a fixed structural elements, so that each structural element rigidly connects with each other at a fixed distance of two interconnected through this structural element articulated joint (for example, a rigid tubular core or box elements), and may run as structural elements resized this image is m, such structural element connects with each other the two are related through him swivel joint at a distance, written by purposeful adjustment or under the influence of forces (e.g., adjustable length support or known in the trucking technique is not flexible longitudinal support elements of springs/dampers).

The connection of the structural elements via a hinged joint may be additionally performed so that the structural elements together with the connecting hinge joints in the normal state, in which all the centers of joints hinge joints are in the same plane and define thereby loaded the plane, form a closed, essentially no shift along the plane of the frame. The term "center hinge" refers here to the case of the ball joint center ball of the ball joint, and in the case of flat hinge - axis rotation flat hinge. Under no shift, essentially, a frame is a frame, which due to their design or not completely changes the angle position by the above-mentioned plane, or in some cases under-dependent loads, structurally provided for changing the size of the structural element can change the angle position, for example if one of the structural element is in, connecting the two hinge joints, made not as bendable longitudinal supporting element is a spring/shock absorber.

Two structural element, forming two opposite sides are not sliding frame, respectively, in both hinge joints connected to each other one of the data of the structural elements can be rotated around an axis of rotation relative to the other two structural elements and relative to the corresponding second rotatable structural element. Each axis of rotation is in the normal position in the designated centers of the hinge plane.

In addition, one of the two V.N. rotating structural elements together with one of the two V.N. other (not turning) the structural elements with which it is directly connected to one of the articulated joints on the basis of its normal position, in which the centers of the hinges of the hinged joints lie in one plane, can be rotated relative to the other two structural elements, i.e. relative to the other two rotating structural elements and the second of the two other structural elements so that the center hinge hinge joint connecting the two rotatable structural element, can the two sides be used outside of the designated centers of the hinges in but the normal position of the plane, moreover, the centers of the hinges of the other three articulated joints remain in this case within the specified plane. This provides the possibility of a crossing of the axes of rotation of both rotary structural elements relative to each other.

So, in other words, the first aspect of the invention relates to an articulated configuration to connect two parts of a vehicle in the vehicle management by folding articulated frame with motion in two tracks (so-called "dog walking") and the possibility of mutual crossing bridges, including four subdivisions, the United four hinge joints, the centers of pivots in the normal position are in the same plane and so that they form not move in the plane of the frame. Two of the four structural elements forming the opposite side does not shift the frame can be rotated around lying in the plane of the axis of rotation with respect to each of the three other structural elements. Swivel joints made with this so that both the rotation axis can be crossed with respect to each other, and one of the axes of rotation may be used outside the specified plane.

The hinge configuration according invented the Yu makes use of other mobile configurations such as flat hinges and transversely-movable connecting elements, to make the two parts of the vehicle with bridges one vehicle management by folding articulated frame with motion in two tracks (so-called "dog walking") and the possibility of mutual crossing bridges, both rotatable structural element articulated configuration connected to each of the two parts of the vehicle. This provides a relatively economical manufacture and operation of such vehicles.

In one preferred embodiment of the hinge configuration between a pair of structural elements are constraints that limit the removal of the center hinge hinge joint connecting both rotatable structural element, beyond the limits defined in the normal position the centers of the hinges plane and thereby the possibility of a crossing of the axes of rotation of the structural elements relative to each other. It is advisable to avoid excessive crossing of the axes of rotation, because with the increase of the degree of overlap decreases sliding stiffness of the formed structural elements and hinge joints of the frame formed along the centers of the hinges in the norms of the flax position of the plane.

Thus, it is preferable V.N. restriction removal symmetrically around this plane, which helps limit the extent of the crossing of the axes of rotation of the structural elements relative to each other evenly in both directions of the crossing.

Preferred is also the location of stops between two structural elements that are directly connected to each other by articulated joints. Thus, there is the possibility of immediate and strict limits on the crossing of the axes of rotation of the structural elements relative to each other.

The second preferred option execute the hinge configuration is the location between each of the two rotating structural elements and one of the other two structural elements one by one regulating device for adjusting and fixing a certain angle of rotation of each of the turning of the structural elements relative to the other two (not swivel) structural elements and relative to the second rotatable structural element. This ensures the possibility of individual adjustment of the angle of rotation of each of the two structural elements relative to each other and, thereby, control the vehicle by folding the hinge-socle is authorized frames such articulated configuration. To align a certain offset angle when moving in two tracks (so-called "dog walk") in this embodiment are installed on both rotary structural elements regulating devices must ostrovacice coordinated. Suitable regulating devices are, for example, the configuration of the hydraulic piston cylinder or mechanism drive screw Assembly.

In another alternative to the above preferred embodiment, the hinge configuration between one of the two rotating structural elements and one of the other two (not turning) the structural elements are regulating device for adjusting and fixing a certain angle of rotation of this rotary structural element relative to the other two structural elements. In addition, between two rotating structural elements are regulating device for adjusting and fixing a certain angle of rotation of both rotary structural elements relative to each other. This allows control and adjustment of the offset angle when moving in two tracks (so-called "dog walk") such vehicle is running by folding articulated frame with such an articulated configuration. By located between dvunapravlennym structural elements regulating devices you can set the rotation angle of the vehicle, without changing significantly the possible offset angle when moving in two tracks (so-called "dog walk"), and with the help of located between one of the two rotating structural elements and one of the other two (not turning) the structural elements of the regulatory devices to align the offset angle when moving in two tracks (so-called "dog walk"), without changing significantly the newly installed angle of the vehicle. For this purpose, for example, are also suitable configuration of the hydraulic piston cylinder or mechanism drive screw Assembly.

With two master preferred alternative versions of the articulated configuration is preferred that, when not installed-regulating devices on that of the other two structural elements, which for the crossing of the axes of rotation of both rotary structural elements relative to each other may be used together with one of the rotatable structural elements so that the center hinge hinge joint connecting both of these structural element is made beyond a plane defined by the centers of the hinges in the normal position. This is useful if you want to limit the angle of crossing with the regulating device.

In addition, two V.N. prefer is lnyh versions of the articulated configuration preference is given to when at least part of the hinge connection control devices are installed on the structural elements, designed as a universal joint shaft, and not as usually envisaged in this case the ball joint, as this enables a particularly compact articulated configuration with a relatively small distance between the axes of rotation of both rotary structural elements.

In another preferred embodiment, the hinge configuration four structural element are connected to each other through three designed as ball joints hinge joints and one swivel joint providing sliding the rigidity of the frame formed by the structural elements and hinge joints.

Furthermore preferred is that, when it is one articulation is designed so that it accepts as a single degree of freedom rotary movement of the connecting structural elements relative to each other around an axis of rotation passing in the plane formed by the centers of the hinges of the hinged joints in the normal position. Such execution articulated configuration cost-effective and reliable.

In another preferred embodiment, the articulated configuration in the normal position of the axis in the stop both rotary structural elements are parallel to each other in the plane defined by the centers of the hinges, and in another preferred embodiment, not parallel to each other. Depending on the application of the hinge configuration may favour one or the other variant execution. So, for example, parallel to the axes of rotation leads to a rather neutral controllability of the vehicle from running by folding articulated frame, while the specially designed non-parallel arrangement of the axes of rotation promotes specific handling, such as sustainable rectilinear movement by inertia as the result produced by the position of the axes of rotation when the output from the normal position of strength return to its original position.

While both alternatives in a preferred embodiment, the possibility of changes in the passage (parallel or non-parallel) to the axis of rotation of both rotary structural elements in normal position relative to each other in the plane formed by the centers of the hinges.

In addition, it is preferable in this case, when the position of the axes of rotation can be changed so that the distance between the two hinge joints, each of which is associated with one of the two axes of rotation of the structural elements can regulate the AMB, for example, if a structural element connecting the two hinge joints, made adjustable along the length of the pendulum support. This can significantly change the handling of the vehicle from running by folding articulated frame created articulated configuration, or to adapt it to certain conditions.

This is preferable also when the position of the axes of rotation can be changed so that the distance between the two hinge joints, each of which is associated with one of the two axes of rotation of the structural elements can be changed depending on the tensile and/or compressive loads along the plane defined by the normal position of the hinged joints, preferably directed against the tension of the spring, affecting the return to the original position after the termination loads. To implement such options for performing structural element connecting both of these hinge joints, for example, can be made as stiff longitudinal supporting element is a spring/shock absorber. You can also optionally provide a fundamental adjustment, as described above, for setting the distance between the two hinge joints in the unloaded state and thereby set the position of axis of rotation relative to each other in the unloaded state.

The second aspect of the invention relates to a vehicle management by folding articulated frame, consisting of two parts, each of which has a bridge and which are interconnected by an articulated configuration according to the first aspect of the invention so that each of the two parts of the vehicle are connected with one of the two rotating structural elements of the articulated configuration. The creation of such a vehicle is the preferred option of applying an articulated configuration according to this invention.

As a rule, if the vehicle is running by folding articulated frame we are talking about tandem rink for sealing asphalt having two smooth rim, one axis of the rubber rollers and one smooth rim or two axes rubber rollers. In such vehicles are manifested most clearly the advantages of this invention

Brief description of drawings

Other variants of implementation, advantages and applications of the invention result from the dependent claims and the following description of the figures.

In the drawings shows:

figure 1 and 2: perspectives horizontal projections at an angle from above from two different points articulated configuration according to this image the structure;

figure 3: lateral projection of the articulated configuration 1 and 2;

figure 4: the horizontal projection of the hinge configuration 1 and 2;

figure 5: vertical cross-section articulated configuration figure 1 and 2 along the axis a-a of figure 4;

figure 6: the prospect is at an angle from below the vehicle is running by folding articulated frame according to this invention;

figure 7: lateral projection of the vehicle 6;

on Fig: vertical projection of the vehicle 6;

on figa and 9b: projection from the bottom of the vehicle 6 in straight-line motion by inertia, without bias and offset rims;

on figa and 10b: the projection of the vehicle 6 is a front, without bias and offset rims;

on figa and 11b: projection of the vehicle 6 is a bottom during rotation, without bias and offset rims;

on Fig: horizontal perspective projection scenarios articulated configuration figure 1 at an angle from above.

The implementation of the invention

In Fig. 1 through 5 depict a preferred embodiment of the hinge configuration 1 according to this invention, the term horizontal projection angle downward from the first side (figure 1), in the perspective of a horizontal projection at the angle downward from the second side (figure 2), in lateral projection from the second side of figure 3), in horizontal projection (figure 4) and in a vertical section along the axis a-a of figure 4 (figure 5).

As is evident from the drawings, the hinge configuration includes four stationary structural element 4, 5, 6, 7, two of which are designed as vertical connecting flanges 4, 6 for the front and rear of the vehicle (not shown), one or both of the horizontal swivel arm 7 and one horizontal pendulum bearing 5. Structural elements 4, 5, 6, 7 are connected to each other by four articulated joints 8, 9, 10, 11, and the centers of joints hinge joints 8, 9, 10, 11 form shown in the figures the normal position a single plane. This plane is identical to the vertical section of the hinge configuration 1 along the axis a-a in figure 4. Three swivel joints designed as ball joints 9, 10, 11, and the fourth articulation as flat hinge 8, which accepts as the only degree of freedom rotary movement connected with it, with one of the two connecting flanges 4 horizontal rotary holder 7 relative to that of the mounting flange 4 around the vertical axis of rotation D1. This axis of rotation D1 passes formed by the centers of the hinges in the normal position of the plane and through the center of the hinge is located vertically above the ball fixed the and 9.

Thus, both of the mounting flange 4, 6, pendulum bearing 5 and the swivel arm 7 together with three ball joints 9, 10, 11 and flat hinge 8 form a closed, stationary relative to the longitudinal axis formed by the centers of the hinges to the plane of the frame. It is possible to rotate each of both connecting flanges 4, 6 relative to the rotary holder 7 and the pendulum support 5 in the hinges 8, 9, 10, 11, respectively, around the vertical axes of rotation D1, D2.

In addition depicted in lateral projection 3 on the right mounting flange 6 along with the pendulum support 5, with which it is directly connected with the ball joint 10 may, on the basis of the shown normal position, thus be rotated relative to the other of the mounting flange 4 and the horizontal swivel bracket 7 that the center of the joint ball joint 10 can extend from two sides outside formed by the centers of the hinges in the normal position of the plane at the hinges of the other three articulated joints 8, 9, 11 do not extend beyond this plane. This provides the ability to rotate the axes of rotation D1, D2 both connecting flanges 4, 6 relative to each other, essentially, around a horizontal axis of rotation D3, which is denoted as the crossing of the axes of rotation D, D2 relative to each other.

This crossing is limited to geometric circuit due to the fact that in the lower part of the horizontal swivel bracket 7 in the zone covering the ball joint 11 is flanged stopper 12, which in normal position is on a slight uniform distance from the opposite limiter 12 of the mounting flange 6 and the rotation of the mounting flange 6 relative to the rotary holder 7 around the center of the joint ball joint 11 at a certain angle turns his into the bracket 12 of the mounting flange 6. In this case, rotation in both directions is possible at the same angle of rotation.

In addition, from the drawings it follows that between is shown in figure 3 to the left mounting flange 4 and the horizontal swivel bracket 7 has a device with a hydraulic piston cylinder 13, with which you can align and fix a certain angle that the connecting flange 4 around the rotation axis D1 relative to the pendulum support 5 and the swivel bracket 7. In addition, between the two connecting flanges 4, 6 is another device with a hydraulic piston cylinder 14, with which you can align and fix a certain angle of rotation of both p is soedinitelny flanges 4, 6 relative to each other, it is possible to rotate the connecting flange 6 relative to the rotary holder 7 and the pendulum support 5 about the axis of rotation D2.

As follows from figure 5, which shows the vertical cross section of an articulated configuration in normal position along the axis a-a of figure 4, the axis of rotation D1, D2 both connecting flanges 4, 6 in the normal position are parallel to each other formed in the centers of the hinge plane.

If, even in the case of structural elements 4, 5, 6, 7 depicted in figures 1 through 5 of the hinge configuration according to this invention it is only on stationary, geometrically invariant structural elements, in other preferred versions of the invention provides for the implementation of some of the mentioned structural elements so that the position of the axes of rotation D1, D2 both connecting flanges 4, 6 in the normal position relative to each other in the plane formed by the centers of the hinges may vary. This can, for example, be provided by execution of the swivel bracket 7 and/or pendulum bearings 5 adjustable along the length or run of the pendulum support 5 in the form of a leaf spring supports variable length depending on the tensile or compressive load.

Fig. 6 through 11b depict the transport medium is in management by folding articulated frame according to the invention in perspective view at an angle from the bottom (6), in the lateral projection (7), in horizontal projection (Fig), bottom in straight-line motion by inertia without offset rims (figa) and offset rims (fig.9b)front in straight-line motion by inertia without bias (figa) and offset rims (fig.10b) and bottom turning without bias (figa) and offset rims (pigv).

Therefore, the vehicle management by folding articulated frame according to this invention consists of two parts of a vehicle 2, 3, each of which has one fixed bridge with one smooth rim 15A, 15b, which are connected to each other via a hinge configuration 1 according to this invention, identical except for minor deviations articulated configuration in figures 1 through 5, in tandem rink management by folding articulated frame. Each of the two vehicle parts 2, 3 are equipped intended for articulated configuration 1 one of the two connecting flanges 4, 6. Digital signs on figures 6 through 11b is identical to the digital symbols on figures 1 through 5 and are respectively functionally identical structural parts or axes of rotation of the articulated configuration 1.

As follows from figures 9a through 10b, based on the situation n the figures 9a and 10A, when the roller is operated in straight-line motion without offset rims 15A, 15b, by shortening or lengthening device with a hydraulic piston cylinder 13 can be virtually no change in the selected direction to set the offset of the two parts of the vehicle 2, 3 relative to each other and, thereby, the offset of the rims 15A, 15b relative to each other, which is designated as the "bias in the dog's gait".

Adjusting the direction of movement of the rink is carried out using a device with a hydraulic piston cylinder 14 is practically without influence on the possible offset of the rims.

As follows from figures 11a and 11b, the "dog walk" can be connected and when driving in rotation, for example, based on the situation figa, in which the rink is operated without offset rims, by shortening or lengthening device with a hydraulic piston cylinder 13 again almost without change of direction.

On Fig depicts a perspective horizontal projection angle from the top hinge configuration according to this invention, which differs from the hinge configuration according to figure 1 in particular, the fact that the cylinder device with a hydraulic piston cylinder 14 located between the vertical mounting flanges 4, 6, connected to p is soedinenii flange 4 cardan joint shaft 16, instead of a ball joint, as shown in figure 1. Universal joint shaft 16 has two perpendicular to each other of the axis of rotation X, Y which intersect in the center of the hinge 16.

As in the present application describes the preferred embodiments of the invention, it is necessary to clearly indicate that the invention is not limited to the mentioned options and can be performed in another way in the scope the following claims.

1. The hinge configuration (1) for connecting two parts of a vehicle (2, 3), with bridges, vehicle management by folding articulated frame with motion in two tracks (so-called "dog walking") and the possibility of crossing bridges, including four structural element(4, 5, 6, 7), interconnected by means of four articulated joints (8, 9, 10, 11) in such a way that they, being in a normal position in which the set of centers of the hinges of the hinged joints (8, 9, 10, 11) forms one plane together form a closed, essentially no sliding along the plane of the frame, each of the two structural elements (4, 6), forming two opposite sides of the stationary frame, is made to rotate in two of the four hinge joints (8, 9, 10, 11) about the axis of rotation (D1, D2), lying is her normal position in the plane formed by the centers of the hinges relative to the other structural elements (5, 7) and one (4) of the two rotary structural elements (4, 6) together with one (5) of the other two structural elements (5, 7), with which it is directly connected via one (10) of the four articulated joints(8, 9, 10, 11), made with the possibility of rotation from a normal position relative to the other two structural elements (4, 7) in such a way that the center hinge hinge joint (10), connecting these two rotatable structural element (4, 5), can extend from two sides outside formed by the centers of the hinges in the normal position, while the centers of the hinges of the other three articulated joints (8, 9, 11) do not go beyond this plane, to enable the crossing of the axes of rotation (D1, D2) both rotating structural elements (4, 6) relative to each other.

2. The hinge configuration (1) according to claim 1, in which between the two (6, 7) of the four structural elements (4, 5, 6, 7) made constraints (12) to limit the possibility of carrying out the center of the hinge connecting the two rotatable structural element (5, 6) swivel joint (10), the limits formed by the centers of the hinges in the normal position, in particular symmetrically around this plane.

3. The hinge configuration (1) according to claim 2, in which between the two structural elements (6, 7) performed the constraints (12)connected directly to each other one (11) of the four articulated joints(8, 9, 10, 11).

4. The hinge configuration (1) according to any one of claims 1 to 3, in which between each of the two rotating structural elements (4, 6) and one of the other two structural elements (5, 7) is a regulating device for adjusting and fixing a certain angle of rotation of the respective rotatable structural element (4, 6) relative to the other two structural elements (5, 7) and the corresponding rotatable structural element (6; 4).

5. The hinge configuration (1) according to claim 4, in which the control device (13) does not affect the structural element (5) of the other two structural elements (5, 7), which is to allow the crossing axes of rotation (D1, D2) both rotating structural elements (4, 6) relative to each other are made to rotate together with one (6) of the two rotary structural elements (4, 6).

6. The hinge configuration according to claim 4, in which at least part of the hinge connections of the regulating device (13, 14) with the structural elements (4, 5, 6, 7) made in the form of universal joints shaft.

7. The hinge configuration according to claim 5, in which at least part of the hinge connections of the regulating device (13, 14) with the structural elements 4, 5, 6, 7) made in the form of universal joints shaft.

8. The hinge configuration (1) according to any one of claims 1 to 3, in which between one (4) of the two rotary structural elements (4, 6) and one (7) of the other two structural elements (5, 7) is the regulating device (13) for adjusting and fixing a certain rotation angle of the rotatable structural element (4) relative to the other two structural elements (5, 7), and between the two rotating structural elements (4, 6) are regulating device (14) for aligning and fixing a certain angle of rotation of both rotary structural elements (4, 6) relative to each other.

9. The hinge configuration (1) according to claim 8, in which the control device (13) does not affect the structural element (5) of the other two structural elements (5, 7), which is to allow the crossing axes of rotation (D1, D2) both rotating structural elements (4, 6) relative to each other are made to rotate together with one (6) of the two rotary structural elements (4, 6).

10. The hinge configuration of claim 8, in which at least part of the hinge connections of the regulating device (13, 14) with the structural elements (4, 5, 6, 7) made in the form of universal joints shaft.

11. The hinge configuration according to claim 9, in which at least h is the terrain of the hinged connections of the regulating device (13, 14) with the structural elements (4, 5, 6, 7) made in the form of universal joints shaft.

12. The hinge configuration (1) according to claim 1, in which four structural element (4, 5, 6, 7) are connected by articulated joints (9, 10, 11), designed as ball joints and swivel joints (8), providing a sliding stiffness of the frame formed by the structural elements (4, 5, 6, 7) and swivel joints(8, 9, 10, 11).

13. The hinge configuration (1) according to claim 4, in which four structural element (4, 5, 6, 7) are connected by articulated joints (9, 10, 11), designed as ball joints and swivel joints (8), providing a sliding stiffness of the frame formed by the structural elements (4, 5, 6, 7) and swivel joints(8, 9, 10, 11).

14. The hinge configuration (1) according to claim 8, in which four structural element (4, 5, 6, 7) are connected by articulated joints (9, 10, 11), designed as ball joints and swivel joints (8), providing a sliding stiffness of the frame formed by the structural elements (4, 5, 6, 7) and swivel joints(8, 9, 10, 11).

15. The hinge configuration (1) para.12, in which the articulated joint (8) is arranged to provide as a single degree of freedom rotary movement of the connecting structural elements (4, 7) relative to each other wok the angle of the axis of rotation (D1), which is formed by the centers of the hinges in the normal position.

16. The hinge configuration (1) in item 13, in which the articulated joint (8) is arranged to provide as a single degree of freedom rotary movement of the connecting structural elements (4, 7) relative to each other around an axis of rotation (D1), which is formed by the centers of the hinges in the normal position.

17. The hinge configuration (1) through 14, in which the articulated joint (8) is arranged to provide as a single degree of freedom rotary movement of the connecting structural elements (4, 7) relative to each other around an axis of rotation (D1), which is formed by the centers of the hinges in the normal position.

18. The hinge configuration (1) according to claim 1, in which in the normal position of the axis of rotation (D1, D2) of the two rotary structural elements (4, 6) are parallel to each other formed in the centers of the hinge plane.

19. The hinge configuration (1) according to claim 1, in which in the normal position of the axis of rotation (D1, D2) of the two rotary structural elements (4, 6) are not parallel to each other formed in the centers of the hinge plane.

20. The hinge configuration (1) on p or 19, in which the position of the axes of rotation (D1, D2) of the two pivoting the structural elements (4, 6) in the normal position relative to each other formed in the centers of the hinges plane can be changed.

21. The hinge configuration (1) according to claim 20, in which the position of the axes of rotation (D1, D2) may change due to the fact that the distance between the two hinge joints, each of which is associated respectively with one of the two axes of rotation (Dl, D2), can be adjusted.

22. The hinge configuration (1) according to claim 20, in which the position of the axes of rotation (D1, D2) relative to each other may change due to the fact that the distance between two of the four articulated joints(8, 9, 10, 11), each of which is associated respectively with one of the two axes of rotation (D1, D2), may vary depending on the tensile and/or compressive load acting along formed by the centers of the hinges of the hinged joints (8, 9, 10, 11) in the normal position, in particular against the force tension springs, which determines the return to the original position after the termination of stress.

23. The hinge configuration (1) according to item 21, in which the position of the axes of rotation (D1, D2) relative to each other may change due to the fact that the distance between two of the four articulated joints(8, 9, 10, 11), each of which is associated respectively with one of the two axes of rotation (D1, D2), may vary depending on rastgele the soup and/or compressive load, current formed along the centers of the hinges of the hinged joints (8, 9, 10, 11) in the normal position, in particular directed against the tension of the spring, which determines the return to the original position after the termination of stress.

24. Vehicle management by folding articulated frame comprising two parts of the vehicle (2, 3), each of which is equipped with a bridge and connected to the other hinge configuration (1) according to any one of the preceding claims 1 to 23, which is performed on a swivel-jointed frame, and each of the two parts of the vehicle (2, 3) connected to one of the two rotating structural elements (4, 6) hinge configurations or forms one of these structural elements (4, 6).

25. The vehicle of paragraph 24, which is made in the form of tandem rink for compaction of asphalt with two smooth rims or with two bridges with rubber rollers.



 

Same patents:

FIELD: construction, road engineering.

SUBSTANCE: invention relates to machines for accelerated preparation of groundwork bases in process of winter roads arrangement on swamps, namely to machines used to flatten frozen swampy groundwork bases in Northern conditions. Pneumatic roller used to flatten groundwork bases comprises frame of the first and second stage connected to each other by means of hinged joint, which is used to provide for free rotation of the first stage relative to the second one in process of turns. The first stage is a single-row pneumatic roller, and the second one is a three-row pneumatic roller with pneumatic wheels installed on axles in staggered order so that strips that remain non-flattened with pneumatic wheels of the first row are flattened by pneumatic wheels of the second row, strips that remain non-flattened after passage of pneumatic wheels of the second row are flattened by pneumatic wheels of the third row, and strips that remain non-flattened after passage of the third row pneumatic wheels, are flattened by pneumatic wheels of the fourth row. As pneumatic wheels are installed, the condition shall be observed so that distance between pneumatic wheels is less or equal to half of pneumatic wheel width. Required pressure P at axis of pneumatic roller with specified depth of pneumatic wheels submersion of h, bearing capacity [σ] of peat swampy groundwork base, width of pneumatic wheels B, their number on a single axis n, half of central angle α and coefficient k, which exceeds permissible bearing capacity of swampy surface, is determined by dependence P=B·(R-h)·tgα·n[σ]·k; hydraulic engines are installed on all four axles of pneumatic roller. In front of the first stage of pneumatic roller used to flatten groundwork bases of motor roads there is a planner-leveler installed with the help of hinged joints and hydraulic cylinders. On the frame of the second stage there is equipment installed to generate electric energy, as well as equipment for hydraulic drive and device for adjustment of pressure in tyres.

EFFECT: invention provides for efficiency of flattening process.

1 cl, 6 dwg

FIELD: construction, road engineering.

SUBSTANCE: roll of compaction roller, comprising cylindrical shell fixed on shaft by means of hubs, equipped with through holes evenly arranged on its outer surface, differs by the fact that section of through hole reduces from outer surface of roll shell to inner one, at the same time section of hole that directly adjoins inner surface of shell is arranged as cylindrical, and section that directly adjoins its outer surface is arranged as conical, angle of generatrix of which makes 45°, at the same time, ratio of total area of through holes, on the side of outer surface of shell to its area is accepted in the range of 0.25-0.3, at the same time ratio of hole diametre on the side of outer surface of shell to thickness of layer of rolled asphalt-concrete mixture is accepted in the range of 0.5-0.65. Besides diametre of cylindrical section of through hole does not exceed minimum size of large filler particles. In process of specified device usage contact pressures vary in wide range, which is provided by establishment of power balance in the system "working element - compacted material" at any stage of compaction process due to optimisation of holes and giving them special shape. Besides availability of perforation improves air exhaust from compacted layer and assists in active realignment of mineral particles of asphalt-concrete mix. Besides possibility is provided to reduce relative disturbance force for vibration compaction rollers twice.

EFFECT: possibility is provided to use single compaction roller at all cycles of asphalt-concrete mixtures compaction with thickness of 40-70 mm, and also possibility is provided in order to visually detect completion of works aimed at compaction of asphalt-concrete mixtures and reduction of wave formation in asphalt-concrete mixture.

2 cl, 6 dwg

FIELD: transport.

SUBSTANCE: roller for flattening road bases contains frame of the first stage and frame of the second stage interconnected using articulated joint through which free turning of the first stage relative to the second stage is provided during cornering. The first stage represents double-row pneumatic roller with pneumatic wheels mounted on axles chequerwise so that strips left not flattened by pneumatic wheels of the first row are flattened by pneumatic wheels of the second row. On the frame of the second stage using articulated joints and hydraulic cylinders and via axle steel drum with profile belts mounted on circular surface of drum is installed. Transitions of profile belts working surfaces and steel drum frontal edges have rounded shape and stretch factor of root plants γ is determined as relation of length embracing circular working surfaces of profile belts equal to 2πτ+2 BC and length of profile belts base equal to 4r in cross section. Relation of sizes of heat exchange through frozen water surfaces in profile strips is determined by optimal relation of ε factor: distances between centrelines of profile belts 1 and radii of profile belts r in cross section ε=1/r=8. In front of the first stage of combination roller the planner-leveller is installed using articulated joints and hydraulic cylinders. On the frame of the first stage equipment for hydraulic drive is installed, on the frame of the second stage equipment for electric and heat power generation is installed.

EFFECT: increase in quality and strength of prepared boggy base surface for winter snow roads, in efficiency of flattening process and acceleration of freezing process of flattened boggy surface, simplification of construction design, lowering manufacturing cost and roller operation costs.

1 cl, 6 dwg

FIELD: construction, road engineering.

SUBSTANCE: invention relates to compacting equipment, in particular to rollers for compaction of soils and other powdery materials. Roller for compaction of soils and other powdery materials with density that corresponds to their density limit includes frame and roll. Frame is arranged with the possibility of displacement along compacted layer by means of displacement mechanism arranged beyond the limits of rolled layer for longitudinal displacement of roller roll along compacted layer. Roll is mounted on frame with the possibility of its suspension over compacted layer so that its lower generatrix just touches upper design surface of compacted layer.

EFFECT: invention provides for even density along whole thickness of compacted layer with direct control of compaction quality in process of rolling.

1 cl, 5 dwg

FIELD: construction, road engineering.

SUBSTANCE: invention is related to methods for compaction of soils and other powdery materials by rolling with compactor rolls. Invention is based on objective to compact powdery material with density that corresponds to ultimate strength by compactor rolls. For this purpose in method of powdery material layer compaction by rolling, which consists in rolling of previously poured loose layer of powdery material by compactor rolls, loose layer of powdery material is filled between lateral sides of rigid enclosure, height of which is equal to thickness of compacted layer, and compactor rolls are rolled on rigid enclosure that limits compacted zone, at the same time compacted powdery material is continuously filled in zone in front of rolls along with their travel in layer that is higher than thickness of compacted layer by 1/20-1/50 of roll diametre until powdery material starts to be pressed back in wave in front of rolls, afterwards material filling in front of rolls is stopped, and continuing to move rolls along enclosure, created wave is caught up with at the end of enclosure, afterwards rolls moving is stopped. In suggested method always, without any control, strength of powdery material under compactor rolls will correspond to specific pressure of roll at powdery material, but may not exceed ultimate strength. Achievement of ultimate strength is characterised by extrusion of powdery material from under roll.

EFFECT: compaction of powdery material until ultimate strength.

21 cl, 13 dwg

FIELD: construction, road engineering.

SUBSTANCE: invention is related to machines for preparation of foundations in process of winter roads arrangement on swamps, namely to machines for sagging with creation of holes in frozen, swamped foundation in northern conditions. In order to improve efficiency, combined aggregate for preparation of foundations for ice roads on swamps comprises the first and second stages, arranged on frames, which are connected to each other by means of hinged joint. At the same time the first stage represents a working element that consists of double-axis pneumatic roller, axes of which are mounted on the frame of the first stage with the help of four hydraulic cylinders. Pneumatic wheels on axes are installed in staggered order so that space that remained non-sagged with the pneumatic wheels of the first axis is sagged with pneumatic wheels of the second axis. The second stage represents a working element in the form of two drums with movable spurs, installed on the second stage frame. Pneumatic wheels are equipped with their pressure control system. Control of specific pressure value in pneumatic wheels upon swamp foundation is provided by means of ballast mass variation at the first stage, and specific pressure of drums with movable spurs is controlled by means of ballast mass variation at the second stage.

EFFECT: improved efficiency in preparation of foundations for arrangement of winter roads on swamps.

1 cl, 6 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to machines for preparation of basis for construction of winter roads on swamps, particularly to machines for sinking with superficial reinforcement of frozen swampy basis in north conditions. Aggregation for sinking with reinforcement of basis for winter roads on swamps contains frame of the first stage and frame of the second stage connected to each other by means of joint, through which at rotations it is provided free rotation of the first stage relative to the second. Additionally the first stage corresponds single-row road roller with air castors, the second stage of aggregate consists of two steel drums and one road roller between them, on surfaces of the first and the second steel drums there are mounted elongated projections of triangular shape. To each other by angular deflection drums are connected by lamellar chain drive so, that elongated project of the second drum are fed on base of road bed into midsection between rows of grooves against impression of projections of the first drum with shift in the longitudinal line for half of length of elongated projection. On axis of the first and the second steel drums there are mounted hydraulic actuators. On frame of the first stage it is installed equipment for hydraulic actuator. On frame of the second stage it is installed equipment for electric and heating power production.

EFFECT: invention is directed to increasing of quality and durability of prepared surface of swamped basis for winter roads, effectiveness of sinking process and acceleration of freezing process of powder with snow, sinking swamped surface.

1 cl, 3 dwg

FIELD: construction.

SUBSTANCE: balance weight is placed on cross bar of the frame or into the cavity of the cross bar of the frame of each of the sections of the basic compactor reaching total weight of the compactor equal to 15 t; for further increasing of the compactor's weight with balance weights on each of the sections of 15 t up to 17 t metal curb is placed around the cylindrical body of the oscillating roll mill, width whereof equals that of the sheet of cylindrical body of the roll mill; for further increase of the weight of compactor with balance weights on each of the sections and metal curb on the body of the roll mill from 17 t to 19 t additional balance weight is loaded onto cross bar of the frame or into the cavity of the cross bar of each of the sections of the basic compactor; for further weight increase of the compactor with additional balance weights on each of the sections and metal curb on the body of the roll mill and weight of 17 t to 21 t, metal curb is replaced with metal curb, thickness whereof increases thickness of the sheet of cylindrical body of the roll mill, thickness of the sheet of lateral parts of the section frame, bearing roll mill and then additional balance weight is loaded on the cross bar of the frame or into the cavity of the cross bar of the frame of each of the sections of the basic compactor up to weight of 21 t.

EFFECT: new methods of loading roll mills of soil compactors and of structured arrangement of model range of soil compactors are obtained.

3 cl, 5 dwg

FIELD: transport.

SUBSTANCE: proposed roll wit movable lugs to prepare beds for winter roads on marshes incorporates frame (1), tools representing first drum (2) and second drum (3) with movable lugs fitted onto the said frame. Frame (1) supports also two heat generators (5) linked up with the first 2 and second 3 drums, electric power station (8) and hydraulic pump unit (10) with tank for hydraulic fluid (11). Drum (2) with movable lugs (4) is arranged first in the central part of frame (1) with the help of two swivel links fitted on the front supports (13) and two hydraulic cylinders (14) fastened on the upper beam (15) to revolve about horizontal axis of cam shaft (16) of the first drum (2). Drum (3) with movable lugs (4) is arranged second at the central part of frame (1) with the help of two swivel links (17) fitted on the rear supports (18) and two hydraulic cylinders (19) fitted on the upper beam (15) to revolve about horizontal axis of cam shaft (16) (fig. 3) of the second drum (3). First (2) and second (3) drums are covered by casings (20) with their inner spaces communicating with heat generators (5) via branch pipes (21) furnished with turbo compressors. The roll frame (1) rests upon the marsh road surface (22) by two front widened pneumatic low-pressure wheels (23) and two similar rear wheels (23). The first (2) and second (3) drums get additional drive allowing changing their relative position in turning with the help of chain gear (24) arranged between the aforesaid drums, (fig.3), chain gear (25) (fig.3). Second drum (3) gets additional drive from rear low-pressure wheels (23), (fig.1). Note also that the rear low-pressure wheels (23) receive additional driving force from hydraulic prime movers (26). The proposed roll is ganged up with the T-170 M1.01-type marsh caterpillar with the help of coupler (27). Two drums with movable lugs are mounted on the roll frame, the drums being hydraulically driven from rear wheels. The cam shafts with special-section cams and round lugs with sharpened tip of the working surface are used.

EFFECT: ruling out sticking of soil between lugs, forcing road surface material by lug tips out of road surface on their coming out of holes, accurate positioning of holes, higher quality of road bed leveling.

9 dwg

FIELD: construction, equipment.

SUBSTANCE: invention relates to transport machine construction engineering. The roller support system of compactor for utilising domestic and industrial wastes at polygons is constructed so that it can be connected to compactor framework. The system contains the first flat flange coupled with the transverse partition of cylindrical roller body. The second flat flange has kinematical connection with the first flange. It is intended for fixing drive mechanism being in the shape of hydraulic drive gear. Flanges are directed towards each other by their flat sides and distanced from each other. The first flat flange is linked with the second flat flange by two spherical supports located diametrically. Each spherical support is implemented with spherical bearing located in the seat of the first flat flange. The seat is realised with one side being spherical in order to interact with spherical element of spherical bearing situated on the cylindrical part of the shaft. The shaft flange is fastened to the surface of the second flange. The first flat flange is implemented so that it can be connected to compactor framework by means of two spherical supports arranged diametrically. Each spherical supports is represented with spherical bearing being in the seat of the first flat flange. The seat is made with one side being spherical in order to interact with spherical element of spherical bearing located in the central part of shaft. The shaft flange is intended for fastening to the compactor framework. The surface crossing spherical bearings of the first flat element designed to contact with the second flat flange, is perpendicular to the surface crossing spherical bearings of the same flange with roller flanges being designed to contact with compactor framework. The length of shaft, where spherical element of spherical connection bearing with compactor framework is situated, exceeds the distance between the flat flanges.

EFFECT: improvement of process compactor characteristics designed for domestic and industrial wastes.

5 dwg

FIELD: transport.

SUBSTANCE: invention relates to self-propelled machine with articulated chassis. Machine comprises chassis 1. Chassis 1 consists of two parts 5, 7 to pivot relative to each other about, in fact, vertical axis A2. Each said part is fitted on one appropriate axle 9, 25. The latter make guide and drive axles 9, 25. Axle 9 may swing on chassis element 5. Articulation between said parts 5, 7 represents joint with axial rod and additionally comprises means 25 for parts selective turn relative to each other and, in fact, about vertical axis A2.

EFFECT: higher stability.

12 cl, 2 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building. Proposed vehicle comprises interconnected drive and drive sections. Said sections are interconnected by two joints, i.e. top and bottom.Bottom joint represents a universal joint. Top joint is arranged above the bottom joint along vertical axis and represents a steering device.

EFFECT: reduced weight.

4 cl, 7 dwg

Vehicle // 2372240

FIELD: transport.

SUBSTANCE: invention relates to vehicles that feature higher cross-country capacity. Proposed vehicle comprises power plant consisting of engine with gearbox, propeller shafts, turning device, articulated frame made up of two semi-frames pivoted together, front drive axle attached to one semi-frame and rear drive axle attached to another semi-frame. Engine with gearbox is coupled, via one propeller shaft, with aforesaid front drive axle and, via another propeller shaft, with rear drive axle. Aforesaid semi-frames consists of top and bottom sections coupled by vertical posts. Bottom section of each semi-frame features recess with depth making at least maximum vertical travel of appropriate drive axle. Front and rear drive axles are suspended to semi-frames.

EFFECT: increased cross-country capacity.

5 cl, 12 dwg

Means of transport // 2325298

FIELD: means of transport; agricultural machine-building industry.

SUBSTANCE: vehicle includes two-axial chassis with front and rear wheels and frame. Frame consists of front semi-frame with installed motor and transmission unit and cabin with control panel and rear semi-frame where platform with hydraulic actuator and rise- and-fall mechanism is installed on articulated arms. Articulated arms are installed so that to ensure turning of gimbal-mounted and welded to side members semi-frame around common arms axis and tipping of platform also around common axis. Rise-and-fall mechanism is represented with brackets rigidly installed on the axis and gimbal-mounted to both hydraulic actuator rods within rise-and-fall mechanism hydraulic system. Both hydraulic actuators are connected with control board. Body of each actuator is fixed to rear semi-frame. Two straps with rear axle are rigidly fixed to common axis ends. Platform is raised and fallen by vehicle turning around front axle in vertical direction. Angle between landed platform and horizontal rear axle is equal to turning angle of vertical cabin axis and horizontal axes of motor and transmission unit with regard to vertical and horizontal front axle, accordingly.

EFFECT: application of specifically designed vehicles is expanded; labour output ratio of handling operations is decreased as loading is possible directly from ground without additional lifting equipment.

4 dwg

FIELD: high-maneuverability vehicles used for transporting of people with limited excursion in premises and in the street.

SUBSTANCE: self-propelled vehicle has carriage with armchair fixed thereon, power source, front rotary wheel, two rear wheels, and control system. Each of said rear wheels is equipped with drive for independent rotation around vertical axis. Each of said drives is fixed on rear part of carriage and connected to wheel support having vertical axis of rotation. Wheel rotation drives are designed for enabling at least two modes of movement. First mode of movement is mode of rotating rear wheels in synchronism with and through angle equal to that of front wheel. At second mode of movement for rear wheels, projections of horizontal axes of rotation of all the wheels onto supporting surface converge to a common point which is center of rotation of vehicle. Angle between projections for rear wheels differs from zero. At second mode, center of rotation is on longitudinal axis of projection onto supporting surface of longitudinal plane of symmetry of vehicle and is spaced from vertical plane of rotation of front wheel by distance L defined by interval of from L=0.1H to L=0.9H, where H is wheel base.

EFFECT: improved maneuverability and minimized vehicle turning area.

15 cl, 19 dwg

Vehicle // 2286120

FIELD: self-propelled rail-free vehicles, including wheeled armchairs, preferably with electric drive and servo control for disabled people deprived of or with immobilized lower limbs.

SUBSTANCE: vehicle comprises drive wheels mounted on axles, each being provided with individual drive and two additional self-orienting driven wheels. Each of drive wheels consists of at least outer rim with tire, casing with rollers, and device for transmitting rotation from drive axle to rim. Each of additional driven wheels is mounted at ends of springy rocking arm disposed in longitudinal plane, symmetrically to axes of drives.

EFFECT: increased stability and safety of vehicle, including wheeled armchair.

5 cl, 1 dwg

Module power // 2149116
The invention relates to transport, namely, base chassis with hydrostatic transmission, mainly mounted with various technological road construction and agricultural equipment

The invention relates to transport machinery, namely to towing devices trackless articulated vehicles and is designed to provide the coupling between a single thacham and double-trailer

The invention relates to the transport industry, in particular to articulated vehicles, and can be used to swivel semiframes, such as loaders

FIELD: transport.

SUBSTANCE: invention relates to transport machine building. Steering of multi-unit track-type vehicle power frame contains steering device kinematically connected with steering wheel and hydraulically connected with feeding pump and hydraulic tank; six-line hydraulic control valve; hydraulic cylinders of vehicle swing control; and bilateral lock valve. Hydraulic control valve is of two-position type and connected by two hydraulic lines with steering device, two hydraulic lines via lock valve - with swing control hydraulic cylinder of multi-unit track-type vehicle, and by two hydraulic lines - with additional three-position five-line hydraulic control valve with hydraulic control. In the first position of six-line two-position hydraulic control valve the latter is connected with swing control hydraulic cylinder by two hydraulic lines. In the second position it is connected with additional three-position five-line hydraulic control valve with hydraulic control. Three-position five-line hydraulic control valve is connected by the first and the second hydraulic lines with six-line two-position hydraulic control valve, by the third hydraulic line - with hydraulic tank, by the fourth hydraulic line it is connected with hydraulic cylinder of braking device of power frame left track, by the fifth hydraulic line - with hydraulic cylinder of braking device of power frame right track. In the first position, hydraulic cylinder of left braking device is connected with six-line two-position hydraulic control valve, and hydraulic cylinder of right braking device is connected with hydraulic tank. In the second position, hydraulic cylinders of braking device are connected with hydraulic tank. In the third position, hydraulic cylinder of right braking device is connected with two-position hydraulic control valve, and hydraulic cylinder of left braking device is connected with hydraulic tank. Stems of hydraulic cylinders of braking devices are made spring-loaded.

EFFECT: hydraulic steering functionality enhancement.

1 dwg

Up!