FIELD: machine building.
SUBSTANCE: invention refers to a bearing assy used as a support for a tubular element, in particular, to a lower bearing of the sliding tube of shock-absorber strut of the aircraft landing gear. Bearing (2') assy comprises body (3') supporting the first and the second annular supporting portions with the supporting surfaces, which contact with inner tubular element (1') in the areas distanced from each other in the axial direction. The annular supporting portions are represented either by separate supporting rings (4") installed in body element (3') with the supporting surfaces of different diameters, or by one supporting ring (4"), which can bend in the radial direction and is supported in such a way that the second annular supporting part can bend under effect of a load in the radial direction, while its supporting surface will occupy a position with a diameter bigger than the diameter of the supporting surface of the first annular supporting part (4"). Supporting ring (4") is installed in body (3') in seat (5") with shaped base (7") or conical base (9").
EFFECT: removal of a pinpoint contact between a tubular element and a supporting ring reducing wear and pressure.
13 cl, 5 dwg
The technical field to which the invention relates.
The present invention relates to a bearing Assembly, which serves as a support for the tubular element is subjected to lateral deflecting forces, which can increase the wear between the said tubular element and the support ring. This problem may occur for the lower bearing of the moving pipe strut of the landing gear of the aircraft.
The level of technology
In the General case, the bearing Assembly for moving pipe strut of an aircraft contains the lower bearing and the upper bearing, lower bearing typically includes a housing that supports one or two smooth support ring located at a distance from each other in the axial direction and having the same diameters. The pipe can slide in bearings in the axial direction, however, if it is bent in the lateral direction, it can load an edge support ring that is closest to the edge in the direction of the axis, as shown in figure 1, creating a point-contact, high pressure and rapid wear. As a solution to this problem was proposed to give to the conical shape of the inner surface of the support ring in the area closest to the edge in the direction of the axis, there may be a point of contact for t the th, to increase the surface area of possible contact. The taper may be small and be only half degrees. However, if the optimization of logistics and repairs are a snap slewing rings, you must follow the correct installation of this tapered bearing, because if not installed and there is the risk of loss of the supporting surface and the lack of reduction of pressure on the edge. To prevent incorrect Assembly, you can use the lock, but increases the cost.
Disclosure of inventions
The invention relates to a bearing Assembly, comprising a housing supporting the first and second annular bearings with bearing surfaces that are in contact with the inner tubular element at sites remote from each other in the axial direction, characterized in that the said annular supporting part presents or separate support rings mounted in the hull element, with the support surfaces of different diameters, or one support ring, which may be bent in the radial direction and is supported so that the second annular supporting part of the load may be bent in the radial direction, with its bearing surface occupies a position with a large dia is the ETP, than the diameter of the position of the supporting surface of the first annular support part.
In the embodiment of the invention using two separate support rings, the second ring with a large diameter bearing surface comes into contact with the tubular element only in the case when the latter is bent under the action of the load, whereby the tubular element is in contact with the outer axial edges of both support rings in the direction of that end of the bearing, by which the load of the tubular element.
In the embodiment of the invention, in which one bearing ring forms these two annular support part, the support ring can be placed in the nest with the cone in the axial direction or shaped, perceiving the bending of the specified second annular supporting portion, which is located at that end of the bearing, by which the load of the tubular element.
In both the above options implemented, it is possible to use essentially the standard snap-in bearings with split rings that do not have conical bearing surfaces and do not require any special Assembly. In the case of two separate support rings snap rings can be identical, and the base surface of the larger diameter of the second bearing is only the result of expansion of the bearing in accordance with a large diameter socket in the housing.
In an alternative embodiment of the invention three or more support rings can be installed in the housing, with a gradual increase of the diameters of their supporting surfaces.
In another alternative embodiment of the invention, two support rings can be formed from one support ring, with the two ring bearings, one of which under the action of loads may be bent into a position of greater diameter than the other. The second support ring can be located on either side of the first support ring, closer or farther relative to that end of the bearing, by which the load is applied to the tubular element. In the previous configuration of the second support ring preferably has a bearing surface with a larger diameter, which can thibetica specified first annular portion of the bearing, while in the latter configuration, the second support ring preferably has a bearing surface of the same or smaller diameter as specified second annular support portion. In the latter configuration, it is possible the combination of these two embodiments of the invention.
In other alternative embodiments the invention, the tubular element may have lateral bending by any axial end of the bearing, is that the bearing may be symmetrical relative to the Central diametrical plane and has one or more support rings with larger diameter bearing surfaces, provided on each side of one or more internal support rings having a smaller diameter bearing surface; or the outer side in the axial direction of the support ring provided on each side of the inner part so as to provide the possibility of bending under the action of the load in the radial direction to a position of larger diameter.
Brief description of drawings
Below is a description of an example embodiment of the invention with reference to the accompanying drawings, on which:
Figure 1 - schematic view in section of a known bearing Assembly that supports a sliding tube landing gear of the aircraft.
Figure 2 - schematic view in section of a bearing Assembly according to the first variant embodiment of the invention;
Figure 3 - schematic view in section of a bearing Assembly according to the second variant embodiment of the invention;
4 is a view similar to figure 3 but showing the bending of the sliding tube; and
5 is a schematic view in section of a bearing Assembly according to a third variant embodiment of the invention with three support rings.
The implementation of the invention
Moving the pipe 1 strut main landing gear of the aircraft shown in figure 2 in its vertical position, supports the lower end of the wheel or cart Sass is. The tube 1 is supported in upper and lower bearings 2 and 12 in the cylindrical housing 11 hours. The upper bearing 12 can be attached to a sliding tube, so that it slid into the housing bore 11. Alternative upper bearing 12 may be attached to the housing bore 11, so that the sliding tube slid in it. The lower bearing 2 is attached to the lower end of the housing 11, the moving pipe can slide in the axial direction in the lower bearing. During operation, the forces acting on the wheel or truck chassis taxiing, takeoff or landing, cause lateral bending of the pipe 1, which can create problems of wear in the lower bearing. The lower bearing Assembly includes a housing 3 of the bearing, which has two identical smooth support ring 4 located at a distance from each other in the axial direction, while each ring is located in a respective socket 5 on the inner surface of the housing 3, and all nests have the same depth.
Support ring 4 can be a split ring that is snapped into the sockets 5. If the tube 1 has a lateral bending, as exaggeratedly shown in figure 1, it acts with the force of reaction on the upper bearing 12 on one side of the tube and is in contact with the lower edge 6 of the lower support ring 3 on diametral is but the opposite side of the pipe. Contact with the lower support ring first represents at least point contact, which causes rapid wear.
The first variant embodiment of the invention shown in figure 2, contains the lower bearing 2' with the tubular body 3', supporting two smooth support ring 4', located at a distance from each other in the axial direction, each support ring is in the correct slot 5' on the inner surface of the housing 3' in order to ensure contact with the moving pipe 1' rack of the chassis. Support ring 4' are identical split snap ring support, however, the socket 5' to the lower of the two support rings has a larger diameter than the slot 5' to the top of the two support rings, so the lower support ring extends in the radial direction, in order to occupy a larger diameter at the bottom of the slot 5'. The upper of the two lower support rings 4' when the installation has an internal diameter, which provides support for moving the pipe 1' in the absence of bending, the moving pipe 1' does not touch the bottom of the support ring 4'. However, when the applied load creates lateral bending of the moving pipe 1', as exaggeratedly shown in figure 2, it comes in contact with the bottom in the axial direction of the edges 6' of the support rings 4'. Thus, in comparison with and the known bearing, shown in figure 2, the contact area between the sliding tube 1' and the edges of the support rings 4' in the embodiment shown in figure 2, increases and, consequently, the wear caused by bending of the pipe is reduced, and the friction force is more evenly distributed between the two support rings 4', and decreases the risk of problems associated with heating, in particular with the appearance of microcracks. In order to avoid contact with the bending of the moving pipe G with the bottom edge of the housing 3', the lower edge of the housing 3' may be cut off or beveled, as indicated by reference number 8'.
The second variant embodiment of the invention shown in figure 2, a similar variant implementation, shown in figure 2, two support rings 4" lower bearing installed in slot 5" of different depths on the inner surface of the tubular body 3". However, the feature of the second variant implementation is that the socket 5 for the lower of the two support rings has shaped section 7, where the diameter increases towards the lower end of the housing 11. The lower support ring 4 can be bent in the radial direction under the action of load, so the lower part of the lower support ring 4" bent, occupying enlarged in the radial direction part 9" slot 5" and increasing, so is atom, the area of contact with the sliding tube 1, as shown in figure 2.
In an alternative embodiment of the invention, the lower of the two lower support rings 4" in figure 2 can be installed in slot 5" so that is closest to the center part of the support ring relied on the same diameter as the upper of the two lower support rings 4". This is closest to the center of the lower support ring is in contact with and supports a sliding tube G in the same manner as the upper support ring 4". In an alternative embodiment of the invention the upper support ring 4 can be excluded, with a sliding tube will only support lower support ring 4".
Alternative embodiments of the invention, in particular, as shown in figure 2, may include three or even more support rings located at a distance from each other along the axis of the housing, while the second and each of the following support rings are installed in the slots, the diameter of which gradually increases, thus, the support ring to form a stepped structure in which the sliding tube in lateral bending comes in contact with edges of the rings/step, distributing the load between the edges of the three or more support rings.
In the shown embodiments, the implementation of the upper bearing 12 has fo the mu simple fixed bearing, however, it should be understood that it can also be modified according to the invention and may be full or partial repeat the configuration of the lower bearing 2.
In other alternative embodiments the invention, the sliding tube 1 may have a lateral bending is not at one end, where it speaks of the strut, and may be a tubular element, which acts on both sides of the bearing, and may have lateral load on both ends. In this case, the bearing may be symmetrical relative to the Central diametrical plane, while one or more support rings located on each side of the Central median plane, are essentially mirror images of each other.
1. Bearing Assembly, comprising a housing supporting the first and second annular bearings with bearing surfaces that are in contact with the inner tubular element at sites remote from each other in the axial direction, characterized in that the said annular supporting part presents or separate support rings mounted in the hull element, with the support surfaces of different diameters, or one support ring, which may be bent in the radial direction and is supported in such a way that the second to Java supporting part of the load may be bent in the radial direction, while its bearing surface occupies the position with a larger diameter than the diameter of the supporting surface of the first annular support portion, with the specified one support ring is installed in the housing in the slot shaped or cone-shaped base.
2. The bearing Assembly according to claim 1, characterized in that the said separate support ring located in the housing in separate slots, one slot has a larger diameter than the other.
3. The bearing Assembly according to claim 1, characterized in that the tubular body has an inner surface from which radially protrude support ring, with the inner surface at one end of the housing, in the axial direction next to the support ring, which has a larger diameter support surface, the cut off for making lateral bending of the tubular element during use.
4. The bearing Assembly according to claim 1, wherein there are three or more support rings that are installed in the hull element at a distance from each other in the axial direction, while the diameters of the bearing surfaces is gradually increased from one support ring to another to the end of the housing in the axial direction.
5. The bearing Assembly according to claim 1, wherein the one or more support rings with larger diameter bearing surfaces are located on each side atomnogo or more internal support rings, having a smaller diameter bearing surface.
6. The bearing Assembly according to claim 1, characterized in that the body of one support ring has an inner tubular surface, which in the radial direction is the support ring, with the inner surface of one end of the housing of one of the supporting ring in the axial direction, near the ring supporting part, which can be bent in the radial direction, the cut off for making lateral bending of the tubular element during use.
7. The bearing Assembly according to claim 1, characterized in that it includes an additional support ring located axially at a distance from the specified one support ring and having a support surface with the same diameter as the first annular support part, or larger diameter.
8. The bearing Assembly according to claim 1, characterized in that the said first annular anchor portion of one support ring has a second annular supporting part located at a distance in the axial direction, and a third annular supporting part located at a distance in the axial direction on the other hand, while the second and third annular supporting part of the load can be bent so that their respective support surface in a position with a larger diameter than the diameter of the PBO is Noah the surface of the first annular support part.
9. The bearing Assembly according to claim 1, characterized in that a separate support ring are identical, or one support ring is identical additional support ring during removal from the body.
10. The bearing Assembly according to claim 1, characterized in that all the individual support rings are symmetrical about their Central diametral planes.
11. The bearing Assembly according to claim 1, characterized in that it comprises a tubular element, which rests in the bearing Assembly.
12. The spring strut of the landing gear of an aircraft with a bearing Assembly according to one of claims 1 to 11.
13. The aircraft containing the strut of the landing gear of an aircraft 12.
FIELD: machine building.
SUBSTANCE: group of inventions relates to machine building. A flexible bush comprises a flexible wall, a ring reinforcing element completely embedded in the flexible wall near an open end, and a holding element. The holding element is installed so that its surface is open along the flexible wall. The outer dimension of the holding element is more than the inner dimension of the ring reinforcing element. A gas spring unit comprises the second end element shifted longitudinally from the first end element. The second end element comprises an end face wall, a side wall and a holding protrusion. The flexible bush is attached between the first and the second end elements. The open end of the flexible bush is inserted along the side wall of the second end element. An assembly method includes the following operations. Installation of the holding element along the open end of the flexible wall. Installation of the flexible wall open end and holding element near the holding protrusion of the end element. Forced movement of the flexible wall open end and holding element along the holding protrusion.
EFFECT: improved reliability of unit performance in tension mode.
17 cl, 33 dwg
FIELD: machine building.
SUBSTANCE: detection device includes hollow housing (11), in which piston (14) is tightly installed and provided with possibility of being moved with sliding. The piston receives pressure in the chamber through inlet (12) of the housing interconnected with that chamber. The piston is retained in the position of pressure overcoming by means of retention device (21). The latter has the possibility of releasing the piston when the specified pressure threshold is achieved or exceeded. The piston is moved in forced manner under action of pressure to indication position. The piston is rigidly attached to pin (27) projecting out of the housing inlet. The pin has the possibility of forced movement with force overcoming of the retention device.
EFFECT: activation of the device both in case of overpressure and collision.
5 cl, 3 dwg
SUBSTANCE: proposed bearing 1 has top housing 3 made from synthetic resin with seat surface 10 for mount device 9 arranged on car body side and annular bottom surface 2, bottom housing 5 made from synthetic resin and annular thrust plain element 6 from synthetic resin. Annular top surface 4 is made integral with bottom housing 5 opposite surface 2, and seat surface 25 of suspended cylindrical spiral spring 7. Said housing is fitted on top housing 3 to rotate about axis O of housing 3 in direction Z. Thrust plain element 6 is arranged in annular clearance between surface 2 and surface 4 and features annular thrust surface sliding to thrust against surface 2 or surface 4. Mount surface 10, working surface and part of surface 25 where against thrusts spring 7 are fitted on bearing axle 1.
EFFECT: efficient bearing to reduce load from car body.
8 cl, 11 dwg
FIELD: machine building.
SUBSTANCE: inside cylinder tube and hydraulic damper there are arranged inter-communicating piston cavity and controlled cavity. Both cavities are filled with oil in a pressurised state. Additionally, there is installed a piston travelling in axial direction in the piston cavity and a rod connected to the piston. A flexible element is installed in the control cavity in a position forming a reservoir in the control cavity by means of compression of oil with pressurising force; impact effect is damped so, that the flexible element is forced to elongate and contract when oil flows in/out of the reservoir due to travels of the rod.
EFFECT: simplicity and reduced dimension of design of hydraulic damper, retaining constant amount of oil in piston cavity.
10 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention relates to bearing structure of damper in hydraulic actuator. Structure for fixation of damper (72a, 72b) is located in hydraulic actuator. Coats (14, 16) are installed on of the cylinder (12) casing. Piston (18,) is installed inside the cylinder (12) casing. Damper groove (70a, 70b) contains the first and the second grooves. The first groove (74) is open from the side of end surface. The second groove (76) is located adjoining to the first groove (74) and expands relative to it. According to the first version damper groove (70a, 70b) is formed on the end surface of piston (18) perpendicularly to its axis and is directed to covers (14, 16). According to the second version damper groove is formed on the end surface of cover (14, 16) perpendicularly to its axis and is directed to piston (18). Damper (72a, 72b) contains basic element (80) and expanding relative to its guideline element (82).
EFFECT: creation of structure providing easy and reliably install damper on piston or covers.
7 cl, 17 dwg
FIELD: machine building.
SUBSTANCE: invention relates to plain bearing for suspension strut of four-wheel vehicle. Proposed bearing comprises upper collar (3) made in synthetic rubber and furnished with circular lower surface (2), lower collar (5) made in reinforced-synthetic rubber and applied on the said upper collar to revolve about its axis. The said lower collar has also circular upper surface (4) arranged opposite surface (2), and circular thrust part (6) made in synthetic rubber and arranged between surfaces (2) and (4). Lower collar (5) has surface (36) making a seat of cylindrical spring (61) and arranged on lower surface (25). Lower collar (5) comprises circular thrust section (12), upper cylindrical section (24), formed entirely on upper surface (23) of section (12). Surface (4) and lower cylindrical section (26) are formed on lower collar (5). The lower cylindrical section (26) is formed entirely on surface (25) of circular thrust section (22). Note here that surface (25) of section (22) arranged on radially outer surface (26) makes surface (36) of the seat of spring (61). Note also that sections (12), (24) and (26) comprise multiple tapered chambers.
EFFECT: reduced vehicle suspension weight and running gear cost.
13 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: proposed kinematic pair consists of two links, that is, foundation 1 and cylinder 2, to allow three relative motions between said links. Said dual foundation 1 gets in contact with the surface of cylinder 2 at two points. Radius of curvature of foundation concave surface generatrix over the entire section of contact with cylinder 2 makes doubled radius thereof.
EFFECT: provision of required complex of motions.
FIELD: machine building.
SUBSTANCE: bearing includes sliding element (SE) (1) that is made in the form of a single cylinder of two various diameters (2, 3), platform (4) (in the form of the third cylinder) located above the cylinder of SE of larger diameter (2), which has somewhat larger diameter than diameter (3) of SE cylinder. Bearing also includes housing (1) in the form of a ring enveloping platform (4) and SE (1) and having collar (19) in the area of diameter (3). Housing (1) and platform (4) are rigidly connected so that gap (16) is formed between housing (6) and SE (1), in the area of cylinder of diameter (2). Ball (5) is located between SE (1) and platform (4), and cavities (15, 10) and coaxial through holes are made on flat surfaces of platform (4) and SE (1), which face each other, in ball (5) location place. Ball (5) is rigidly fixed in cavity (15) of platform (4). On side surface of housing (6) there installed is rod (17) rigidly attached to it and the axis of which is directed along the radius of cylinder with diameter (2). Grooves (11) are made in the form of orthogonal grid on external polished surface of cylinder with diameter (2). On side surface of cylinder with diameter (3) there made is slot (18) the axis of which is directed along the radius of SE (1) cylinder at an angle of 45 in relation to orthogonal grid of grooves (11) and into which rod (17) enters with a gap. Spring (7) with retainer (8), which is borne against platform (4), is installed on upper surface of platform (4). Tread (12) that is fixed with one of its ends on SE (1) and with the other end on retainer (8) is passed through coaxial through holes of elements (7, 4, 5 and 1). SE (1) and ball (5) is made from ceramics or from materials with high hardness and with low thermal expansion coefficient.
EFFECT: creation of bearing with possibility of its being moved along the plane in any trajectory and with high accuracy.
FIELD: machine building.
SUBSTANCE: method of reducing sliding friction in sleeve-type guides implies that a needle roller bearing (1) with an outer ring is used as a guide sliding sleeve.
EFFECT: improved efficiency and reliability of sliding friction couple in sleeve-type guides.
FIELD: machine building.
SUBSTANCE: gas bearing comprises bearing bush 23 surrounding space 22 accommodating supported body 34 and having its wall furnished with multiple feed channels 32, 33 made to feed compressed gas from outside. Said bearing bush 23 is made up of multiple elements 24, 25, 26, 27, 28. At least some feed channels 32, 33 are formed by grooves 32 in opposed surfaces 29 of adjacent elements 24, 25, 26, 27, 28. Invention covers also the method of fabricating said gas bearing that includes the following stages: a) producing multiple channels 24, 25, 26, 27, 28 to be communicated to form bearing bush 23 surrounding space 22; b) making grooves 32, 33, in at least one surface 29 of at least one of elements 25; 27 with its surface as-assembled faces surface of adjacent element 24; 26; 28; and c) jointing elements 24, 25, 26, 27, 28 together to make bearing bush 23.
EFFECT: minor cross section of feed orifices, stable geometry.
19 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: gas bearing consists of bearing element (10) made in form of hollow cylinder, to internal space of which there can be supplied or withdrawn gas from gas reservoir (15). Channels (11-11'", 12, 12') are made on internal surface of bearing element (10), also, part of channels (11-11'") is designed for supply of gas via a compression chamber, while another part of channels (12, 12') is connected with gas reservoir (15). Gas channels (11, 12) are parallel, spiral or corrugated relative to axis (1) of bearing element (10).
EFFECT: efficient supply of gas, reduced losses during gas supply and reduced mass flow; also, facilitation of gas return to compression chamber due to application of counter-flow principle.
10 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: friction bearing (7) consists of bushing (17) out of synthetic plastic with at least one circular groove (16) made on external periphery surface (15) of bushing, of circular-shaped elastic element (18) inserted in circular groove (16) and of couple of periphery, axially symmetrical and turned inside surfaces (21, 22). Bushing (17) also has two pairs of slots (23, 24) and (25, 26) each positioned so, that surfaces (21, 22) run between them along circumference; the slots facilitate corresponding surfaces (21, 22) travelling in radial direction inside/outside. Further, the bushing has at least one pair of internal periphery surfaces (27, 28) turned outside and passing from outside into radial direction relative to pair of surfaces (21, 22). Each surface (27, 28) forms a gap with corresponding external periphery surface from the side of teeth and from opposite to it side of a shaft of steer rack; the shaft is inserted and fixed in a through orifice formed with pairs of surfaces (21, 22) and (27, 28). The section of each surface (21, 22) comes into a sliding contact with a corresponding external periphery surface of the shaft of the steer rack, except for external periphery surfaces from the side of teeth and for opposite to it side of the shaft of the steer rack. There is also disclosed the rack-and-pinion steer including the above said friction bearing.
EFFECT: facilitating specified rigidity for shaft of steer rack in its radial direction and in axial direction of drive gear; also facilitation of movable support with low friction resistance in axial direction of shaft; reduced effect of relaxation of stresses due to creep strain and heat prehistory.
9 cl, 10 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention relates to supports of rods of control valves operating within wide temperature range. Proposed support of rod has polymeric bushing placed and press-fitted in holder. Ring grooves, depth 0.1-0.35 of thickness of polymeric bushing, are made on inner surfaces of polymeric bushing and holder. Ring grooves on polymeric bushing are displaced lengthwise relative to ring grooves of holder. Ring grooves of polymeric bushing and holder are equal. Width of ring grooves is equal to distance between grooves. Ring grooves on polymeric bushing are displaced lengthwise relative to ring grooves of holder by width of ring groove. Width of ring grooves of holder is greater than width of ring grooves of polymeric bushing, and their displacement is symmetrical.
EFFECT: improved reliability of support at higher temperatures owing to reduction of radial load on rod.
3 cl; 3 dwg
FIELD: engines and pumps.
SUBSTANCE: downhole motor spindle support consists of outer fixed housing and shaft running in axial and radial plain bearings. Set of axial bearings represents annular supports (thrust bearings 7 and end thrust bearings 4) with cross section representing self-conjugate right triangles. Note that basic support plane is perpendicular to spindle support axis. Flat washers 6 are fitted between shaft thrust bearings 7. Elastomer shims 5, 8 represent flat unlocked washers with shaped recesses on load bearing surfaces. Top washer 5 arranged on end thrust bearing 4 has recesses represent circular arcs arranged eccentrically with respect to axis of washer 5 and positive gradient of direction along shaft rotation from edge of washer 5 to its center and rigidity anisotropy in radial system of coordinates: rigidity is greater along shaft rotation than that in reverse direction. Lower washer 8 arranged between fair conical surface of end thrust bearing 4 and thrust bearing 7 have recesses that can be concentric with rigidity anisotropy in radial direction: rigidity is greater to wards center of washer 8, on outside, then that in reverse direction. Proposed support can be filled with oil.
EFFECT: compact design, longer life, smaller materials-output ratio and high reparability, expanded operating performances and ease of manufacture.
4 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used in production of screw-type submersible pumps to lift brine water from oil wells. Axial support for submersible screw-type pumps comprises housing and shaft with bearing elements, the said shaft being arranged inside sealed hydraulic chamber filled with working fluid. Proposed support is furnished with bearings fitted on the shaft and overrunning coupling clutch to prevent shaft reverse rotation. Support elements representing plain bearings, each representing a cylinder and piston- thrust bearing that doubles as plain bearing for thrust bearing, both making a hydraulic chamber. All hydraulic chambers are integrated, via channels arranged along outer generating surface of the cylinders, into tight hydraulic system filled with working fluid. Thrust bearings and housing have channels designed to withdraw generated heat from support elements by pumped-over fluid.
EFFECT: uniform load distribution, easier fabrication and assembly.
FIELD: engineering industry; assemblies undergoing increased axial load.
SUBSTANCE: supporting bearing assembly includes the housing with hollow shaft inside, with at least two bearing sections on it, arranged consequently. Each section includes consequently arranged rest fastened on the shaft, plain thrust bearing, slidable support and resilient member, which is linked on one side with the housing, and from another with the support, which in turn is linked with the housing by means of a support rotation delimiter, related to the shaft axle. One part of the plain thrust bearing is linked with the support, and its other part is linked to the rest.
EFFECT: supporting bearing assembly mounting simplification; its reliability enhancement; manufacturing cost decrease.
2 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: journal bearing unit comprises housing that receives shaft mounted in radial bearings and at least two journal sections interposed in series between the radial bearings along the axis of the shaft. Each section has, arranged in series, thrust member secured to the shaft, journal sliding bearing, movably mounted support, and flexible member connected with the housing from one side and with the support from the other side. The support is connected with the housing by means of the arrester of the rotation of the support with respect to the shaft. One part of the journal sliding bearing is connected with the support, and the other part is connected with the thrust member.
EFFECT: simplified assembling and enhanced reliability.
3 cl, 2 dwg