A device for connecting links of mobile machines

 

The invention relates to a device for connecting links of mobile machines, such as agricultural tractors with pournami associated hinge. A device for connecting links of the mobile machine includes a traction element made in the form of a stepped plate mounted on the rear link via a hinge located along the longitudinal axis of the link. The step plate is connected through a vertical king pin of the rolling element accommodated in the through groove of the plate, with the front link. The outer end surface of the plate made according to the radius emanating from the center, located on the longitudinal axis of the forward link. Wall of the through-groove plate made by arcs of circles with the above centre. The tabs stepped plate cooperating with the outer end surface of the plate. On the step plate is installed toothed gear rigidly connected with the shaft of the steering wheel of the front link. This gear interacts with the introduction of the device gear ring is made on the outer end surface of the plate. The technical result - increasing the efficiency of the device by forced control the angle of the folding parts of the unity of the links of mobile machines, for example, agricultural tractors with pournami associated hinge.

A device for connecting parts, namely the front and rear frame of the tractor, such as the T-150, with vertical hinge serving to rotate the tractor. The turning of the tractor is accomplished by folding parts of the frame about a vertical hinge. The front part of the frame of the tractor is connected with the trailer link - rear part of the frame (see Tractor T-150K: design and operation /edited by B. P. and I. Kashuba A. Koval. - M.: Kolos, 1976, S. 194-196).

The disadvantage of this device is the low efficiency, due to the large transverse displacement of the level trailer when turning, deteriorating the stability of motion.

Closest to the proposed invention to the technical essence and the achieved result (prototype) is a device for connecting links of the mobile machine, containing a traction element, one end of which is hinged to the rear link, and the other on the front element. The traction element is designed as a stepped plate mounted on the rear link by means of a vertical hinge located along the longitudinal axis of the link and linked through vertical square analnogo hinge. The outer end surface of the plate made according to the radius emanating from the center, located on the longitudinal axis of the forward link. Wall of the through-groove plate made by arcs of circles with center located on the longitudinal axis of the forward link. The tabs stepped plate cooperating with the outer end surface of the plate. In the through groove of the plate when making it horizontal grooves intersecting the through groove, posted by mobile elements, made in the form of slides included in this groove, and the bolt passing through the vertical holes in the riser plate and the slider. To reduce the friction elements of the device plate can be made without horizontal grooves, solid, and stepped plate - double, covering the plate. Then through the slot of the plate is movable element made in the form of a roller with flanges and bolt, and on the step plate are arranged symmetrically on the axis movable elements, in the form of rollers with ribs, interacting with the outer end surface of the plate (see USSR author's certificate No. 1027069, M CL 4 60 D 1/00).

The main disadvantage of this device is its low efficieny invention solves the problem of increasing the efficiency of the device for connecting links of the mobile machine by forcing control the angle of folding links of mobile machines.

To achieve this result, the device for connecting links of mobile machines containing plate, the movable elements and the traction element made in the form of a stepped plate mounted on the rear link via a hinge located along the longitudinal axis of the link, and connected via a vertical king pin of the rolling element accommodated in the through groove of the plate, with the front link, the outer end surface of which is made according to the radius emanating from the center, located on the longitudinal axis of the forward link, while the walls of the through-groove plate made by arcs of circles with the said center, and the tabs stepped plate cooperating with the outer end surface of the plate, fitted with a toothed gear rigidly connected with the shaft of the steering wheel of the forward link that is installed on the step plate and interacting with the introduction of the device gear ring is made on the outer end surface of the plate.

The toothed gear and the ring gear may be connected through the established on the step plate movable elements, the flanges of the rollers are toothed crowns.

The rotation shaft of the steering wheel pridraga link relative to the front, that is, the forced change in the angle of folding.

Thus, the forced steering angle of folding links of mobile machines leads to an optimum change in the effective attachment point of the rear link relative to the front.

The invention is illustrated by drawings, where Fig.1 shows a top view of the device for connecting links of mobile machines, in which the plate is made with a recess; Fig.2 is a top view of the device for connecting links of the mobile machine when the deviation of the longitudinal axis of the rear link from the longitudinal axis of the front link at a considerable angle greater than the angle between the extreme positions of the sliders in the through groove, and Fig.3 is a section along the line a-a of Fig.1; Fig.4 is a top view of the device for connecting links of mobile machines, in which the plate is made solid, and the step plate - double of Fig.5 is a section along the line b-B of Fig.4; Fig.6 is a section along the line In Fig.4.

A device for connecting links of mobile machines (Fig.1, 2, 3) contains the symmetric relative to the longitudinal axis of the mobile machine, plate 1, is rigidly connected with the front element 2, for example the front part of the frame of the mobile machine. In the plate 1 has a through groove 3. Wall pass-through Phnom 1 at point 4. The outer end surface 5 of the plate 1 is made in an arc concentric arcs forming the through groove 3. The plate 1 has a horizontal recess 6, which crosses through the groove 3, the open side of the rear element 7. Point 4 is the instantaneous center of rotation of the rear link 7 relative to the front element 2. In the recess 6 posted by traction element made in the form of stepped plates (8) connected with the rear part 7 of the horizontal longitudinal hinge 9.

The tabs 10 of the stepped plate 8 interact with the outer end surface 5 of the plate 1. The step plate 8 and the plate 1 is pivotally connected, and a stepped plate 1 and with the front part 2, with moving parts, made in the form of sliders 11 included in the through groove 3, and a vertical bolt 12 passing through the vertical holes in the stepped plate 8 and the slider 11. The side sections 13 end surface 5 paired with the latest in circles, the centers of which lie on the axis of the king pin 12, at the points corresponding to the extreme positions of the centers of the movable elements in end-to-end vertical groove 3. The king pin 12 to prevent axial movement equipped with a locking device 14 sportowego type. To implement prob what encom 15. Toothed gear 16 rigidly connected with the shaft of the steering wheel 17 has the opportunity to interact with a ring gear 15 of the plate 1. To prevent axial movements of the shaft 17 with a toothed gear 16 has a clamping element 18, is rigidly fixed to the protrusions 10 of the stepped plate 8 by means of screw connections 19.

In addition, indicated the following: 20 - maximum angle between the longitudinal axes of the centers of the movable elements in the through groove 3 (the end position of the movable elements in the groove 3); 21 - the angle between the longitudinal axis of the front element 2 and the axis of symmetry of the stepped plate 8, is rotated relative to plate 1 (the angle of folding links of mobile machines); 22 - the distance between the center of the concentric arcs forming the through groove 3 (point 4), and the transverse axis of symmetry of the groove 3; 23 - instantaneous centre of rotation of the rear link 7 relative to the front element 2 when the turn angle of 21; 24 - the distance between the axis of symmetry of the stepped plate 8, is rotated relative to the plate 1 at an angle 24 (point 23), and the longitudinal axis of the front link 2.

In addition, the device for connecting links of mobile machines (Fig.4, 5, 6) plate 1 may be made solid, without a notch 6. To reduce friction elements give the ri on the stepped plate 8 are movable elements, made in the form located symmetrically on the axis 25 of the rollers 26 with the flanges of interacting with the end surface 5, including side sections 13, plate 1. Axis 25 fitted with locking devices 27 sportowego type. On the upper flanges of the rollers 26 is made sprockets 28, which interacts with a toothed gear 16 mounted on shaft 17. The movable element is made in the form of a roller 29 with the flanges of interacting with the bolt 12.

A device for connecting links of mobile machine operates as follows. When the movement of the mobile machine traction from the front element 2 is transmitted to the plate 1. The rear walls of the through groove 3 tractive force is transferred through the sliders 11 and the bolt 12 at the step plate 8. The step plate 8 via a hinge 9 passes traction rear element 7. At clash of the rear element 7 on the forward link 2 the force from the rear element 7 is transmitted through the protrusions 10 of the stepped plate 8 on the side surface 5 of the plate 1 and then to the front element 2. When the user rotates the mobile machine when the angle between the front part 2 and the rear element 7 is small and close to half of the angle 20, which is typical when moving close to a straight line, a device for connection of the 1 and the projections 10 on the surface 5. While effective attachment point of the rear link 7 to a forward link 2 is point 4, is moved forward by the length 22. This increases the effective distance to point 4 attach the rear element 7 relative to the front element 2, thereby eliminating a large lateral displacement of the rear link, leading, for example, to a deterioration of the stability of motion and increasing values of lateral acceleration and drift back link.

When the angle between the front part 2 and the rear part 7 will exceed half of the angle 20, such as during headland, the movable elements will be installed at the end of the through groove 3, and further rotation is possible only due to the fact that the step plate 8 is rotated relative to the plate 1 at an angle 21, gliding steps 10 through the side sections 13, then the effective point of the trailer rear link 7 to the front 2 at position 4 and is shifted only at a distance of 24, which is significantly less than the distance 22. This improves the maneuverability, reduced turning radius is achieved coincidence gauge front and rear links.

A device for connecting links of mobile machines, plate 1 which is made of a solid without the notches 6, has a similar take roller 29, and the interaction between levels 10 with the surface 5, including sections 13, plate 1, is replaced by rolling friction of the rollers 26 relative to the axes 25 and the surface 5 (Fig.4, 5, 6).

The use of the invention in comparison with the prototype provides the optimal change in the effective attachment point of the rear link relative to the forward link by forced control the angle of the fold, thereby increasing the stability of the mobile machine, improved maneuverability, eliminated the discrepancy between the first track and the back links and reduces the turning radius.

Claims

1. A device for connecting links of mobile machines containing plate, movable elements, the traction element made in the form of a stepped plate mounted on the rear link via a hinge located along the longitudinal axis of the link, and connected via a vertical king pin of the rolling element accommodated in the through groove of the plate, with the front link, the outer end surface of which is made according to the radius emanating from the center, located on the longitudinal axis of the forward link, while the walls of the through-groove plate made by the arcs ukrainepreteen, characterized in that it is provided with a toothed gear rigidly connected with the shaft of the steering wheel of the forward link that is installed on the step plate and interacting with the introduction of the device gear ring is made on the outer end surface of the plate.

2. The device under item 1, characterized in that the toothed gear and ring gear are connected via installed on the step plate movable elements, the flanges of the rollers are toothed crowns.

 

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