All-terrain vehicle drive assembly device

Abstract

The invention discloses an all-terrain vehicle drive assembly device, belonging to the technical field of vehicle accessories. The all-terrain vehicle drive assembly device includes a bridge housing, a transmission, a transmission shaft, a fixed flange, an extension sleeve, a rigid sleeve, a bolt, and a pressure plate. The other end of the bolt is threaded with a nut; a damping structure is installed on the end surface of the fixed flange and the end of the connecting flange. The damping structure is used to generate a damping force for the tangential direction movement of the bolt around the axis of the connecting flange. In the present invention, when the bolt is subjected to a shear force, the bolt will generate a force on the rigid sleeve, and the force is transmitted to the extension sleeve, which is extended by the extension sleeve, so that the bolt is buffered when subjected to the shear force. In addition, by setting a damping structure, the damping structure generates a damping force on the rigid sleeve. In this way, after the rigid sleeve is subjected to the extrusion force of the bolt and generates an extrusion on the extension sleeve, the damping force of the rigid sleeve can be buffered by the damping structure, thereby reducing the extrusion wear of the extension sleeve.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle accessories, and in particular relates to a driving assembly device of an all-terrain vehicle. Background Art

[0002] The drive assembly is a collection of components used to generate and transmit power in mechanical equipment. The composition of the drive assembly may vary in different mechanical equipment, but it usually includes the following basic parts: engine, gearbox, clutch, drive shaft, differential, drive wheel, drive axle, etc.

[0003] The differential is installed in the bridge housing of the drive axle, the drive shaft is connected to the differential, the engine drives the drive shaft to rotate, and the drive shaft then drives the drive wheel to rotate by driving the differential, thereby realizing the movement of the vehicle. In the prior art, the drive shaft is generally a cross universal joint, and the cross universal joint is connected to the drive shaft of the differential by bolting the connecting flange at the end of the drive shaft, so that the cross universal joint drives the differential to rotate.

[0004] The connection flange transmits torque through the pre-tightening force and friction formed by bolted connection. When the bolt is loose, the friction disappears, and the bolt is immediately subjected to lateral shear force. At this time, the bolt is easy to be sheared, which causes damage to the transmission shaft, gearbox or drive axle, and the loss is expanded. Although some manufacturers currently set a "one"-shaped boss on the connection flange surface, and then set a corresponding slot on the flange end face of the transmission shaft, the boss is clamped in the slot, and then pre-tightened by bolts, so that when the bolt is sheared, the transmission shaft and the connection flange are still firmly connected. This method is relatively simple, but it will also cause the boss to squeeze the inner wall of the slot, causing the inner wall of the slot to increase the wear. When the bolt is loose and the inner wall of the slot is worn, the transmission shaft drives the connection flange to rotate, which will produce a large noise, and the shear force of the boss on the inner wall of the slot and the bolt will increase accordingly, which will cause a large safety hazard. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide an all-terrain vehicle drive assembly device.

[0006] The technical solution adopted to solve the above technical problems is:

[0007] An all-terrain vehicle drive assembly device, comprising:

[0008] A bridge housing, a transmission, a transmission shaft, a connecting flange of the transmission input shaft and the transmission shaft are detachably connected, and further comprising:

[0009] A fixed flange fixedly connected to the end of the transmission shaft, wherein the end surface of the fixed flange opposite to the connecting flange is provided with a plurality of bushing mounting holes;

[0010] An extension sleeve installed in the bushing installation hole, wherein a rigid sleeve is coaxially passed through the middle hole of the extension sleeve;

[0011] A bolt is inserted into the rigid sleeve, with both ends of the bolt passing through the rigid sleeve, one end of the bolt corresponding to the screw head is fixedly connected to a pressing plate, and the other end of the bolt is threadedly sleeved with a nut;

[0012] A damping structure is installed on the end faces of the fixed flange and the connecting flange at opposite ends, and the damping structure is used to generate a damping force on the tangential direction movement of the bolt around the axis of the connecting flange.

[0013] Through the above technical solution, an extension sleeve is provided. When the bolt is subjected to shear force, the bolt will generate a force on the rigid sleeve, and the force is transmitted to the extension sleeve, which is extended, thereby buffering the bolt when subjected to shear force. In addition, a damping structure is provided, and the damping structure generates a damping force on the rigid sleeve. In this way, after the rigid sleeve is squeezed by the extrusion force of the bolt and the extension sleeve is squeezed, the damping force can be buffered by the damping structure, thereby reducing the extrusion wear on the extension sleeve.

[0014] Furthermore, the extension sleeve is made of brass.

[0015] Through the above technical solution, the brass material has good ductility and also has greater mechanical strength.

[0016] Furthermore, the outer diameter of the pressing plate is greater than the outer diameter of the extension sleeve.

[0017] Through the above technical solution, when the bolts are used to connect the fixed flange and the connecting flange, the extrusion force on the extension sleeve can be dispersed by the end faces of the fixed flange and the connecting flange, thereby reducing the extrusion on the extension sleeve, and the pressure plate can limit the axial movement of the bolts.

[0018] Furthermore, the damping structure includes connecting pins fixedly connected to both sides of the periphery of the rigid sleeve, the periphery of the extension sleeve is provided with through holes for the connecting pins to pass freely, the end surfaces of the connecting flange and the opposite ends of the fixed flange are correspondingly provided with sliding grooves for the connecting pins to pass freely, the end surfaces of the connecting flange and the opposite ends of the fixed flange are also provided with recessed grooves, the two intersecting grooves are jointly clamped with a hollow cylinder, the end surface of the hollow cylinder is provided with a through hole for the connecting pin to pass freely, a sliding plug is clamped in the hollow cylinder, the sliding plug slides freely in the hollow cylinder, and a storage chamber for storing hydraulic oil is formed between the end surface of the sliding plug and the inner wall of the hollow cylinder, and the end of the connecting pin inserted into the hollow cylinder is connected to the sliding plug.

[0019] Through the above technical solution, when the bolt is subjected to shear force, the bolt will generate a corresponding force on the sliding plug through the connecting pin, so that the sliding plug squeezes the hydraulic oil in the corresponding hollow cylinder, and then damps and buffers the bolt through the hydraulic damping force of the hydraulic oil.

[0020] Furthermore, a circle of annular assembly grooves is provided on the periphery of the sliding plug, a sealing ring is installed in the annular assembly groove, and the outer diameter of the sealing ring is larger than the outer diameter of the sliding plug.

[0021] Through the above technical solution, the sealing ring seals the contact surface between the sliding plug and the inner wall of the hollow cylinder.

[0022] Furthermore, the inner diameter of the hollow tube decreases gradually in the direction away from the rigid sleeve, the outer diameter of the sliding plug is not larger than the minimum inner diameter of the hollow tube, and the outer diameter of the sealing ring is not smaller than the maximum inner diameter of the hollow tube.

[0023] Through the above technical solution, when the sliding plug squeezes the hydraulic oil in the storage chamber, the hydraulic oil in the storage chamber is squeezed, and the internal hydraulic damping increases rapidly. When the sliding plug moves in the direction away from the rigid sleeve, the inner diameter of the hollow cylinder decreases, so that the squeezing force of the sealing ring on the inner wall of the hollow cylinder increases, thereby improving the sealing effect of the sealing ring on the connection between the sliding plug and the inner wall of the hollow cylinder.

[0024] Furthermore, the axes of the two adjacent hollow cylinders are parallel to the tangent of the axial rotation trajectory of the bolt around the connecting flange.

[0025] Through the above technical solution, when the bolt is subjected to shear force, the component force of the shear force on the connecting pin can be transmitted from the connecting pin to the sliding plug, and then the hydraulic oil in the storage chamber is squeezed by the sliding plug, that is, the direction of the component force of the shear force on the connecting pin is consistent with the axis of the connecting pin and the hollow cylinder, thereby avoiding greater wear on the connecting pin and the sliding plug.

[0026] Furthermore, an anti-loosening structure is sleeved on one end of the bolt away from the pressure plate. The anti-loosening structure is arranged between the nut and the end face of the connecting flange and is used to generate a force for the nut to move in a direction away from the rigid sleeve.

[0027] Through the above technical solution, by providing an anti-loosening structure, it is possible to prevent the bolt from being subjected to shearing force, and after the extension sleeve is deformed, the bolt vibrates and causes the nut to loosen.

[0028] Furthermore, the anti-loosening structure includes an anti-loosening sleeve mounted on the end of the bolt away from the pressure plate, a deformation seam in the form of a notch is provided at the periphery of the anti-loosening sleeve, an installation groove is provided at one end face of the anti-loosening sleeve facing the connecting flange, a cylindrical rotating part is rotatably connected to the inner wall of the installation groove, a clamping surface is provided at the periphery of the cylindrical rotating part, the clamping surface is abutted against the inner wall of the deformation seam, and a rotating component for driving the cylindrical rotating part to rotate is provided on the anti-loosening sleeve.

[0029] Through the above technical scheme, when the bolt is deflected by shear force, the rotating assembly will drive the cylindrical rotating part to rotate, so that the clamping surface begins to break away from the contact with the inner wall of the deformation joint, and the peripheral part of the cylindrical rotating part contacts the inner wall of the deformation joint, so that the deformation joint can be expanded, so that the anti-loosening sleeve can be in an expanded deformation state, and the end face of the anti-loosening sleeve can be pressed against the nut, so that when the bolt is vibrated by shear force, the nut can be prevented from loosening.

[0030] Furthermore, the rotating assembly includes a gear portion opened on the periphery of the cylindrical rotating portion, and the end surface of the connecting flange is provided with a rack portion meshing with the gear portion.

[0031] Through the above technical solution, when the bolt moves, the rack part and the gear part are meshed, so that the gear part drives the cylindrical rotating part to rotate. The structure is simple and the nut can be actively prevented from loosening when the bolt moves.

[0032] The beneficial effects of the present invention are as follows:

[0033] (1) In the present invention, by providing an extension sleeve, when the bolt is subjected to shear force, the bolt will generate a force on the rigid sleeve, and the force is transmitted to the extension sleeve, which is extended by the extension sleeve, so that the bolt is buffered when subjected to shear force. In addition, by providing a damping structure, the damping structure generates a damping force on the rigid sleeve. In this way, after the rigid sleeve is subjected to the extrusion force of the bolt and generates an extrusion on the extension sleeve, the damping force can be buffered by the damping structure, thereby reducing the extrusion wear on the extension sleeve;

[0034] (2) In the present invention, when the bolt is subjected to shear force, the bolt will generate a corresponding force on the sliding plug through the connecting pin, so that the sliding plug squeezes the hydraulic oil in the corresponding hollow cylinder, and then the bolt is damped and buffered by the hydraulic damping force of the hydraulic oil;

[0035] (3) In the present invention, when the bolt is deflected by shear force, the rotating assembly drives the cylindrical rotating part to rotate, so that the pressing surface begins to break away from the contact with the inner wall of the deformation joint, and the peripheral portion of the cylindrical rotating part contacts the inner wall of the deformation joint, thereby making the deformation joint expand. In this way, the anti-loosening sleeve can be in an expanded deformation state, and the end face of the anti-loosening sleeve can be pressed against the nut, so that when the bolt is vibrated by shear force, the nut can be prevented from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of an all-terrain vehicle drive assembly device in the present invention;

[0037] Figure 2 yes Figure 1 A schematic diagram of the structure from the first perspective;

[0038] Figure 3 yes Figure 1 A schematic diagram of the structure from the second perspective;

[0039] Figure 4 yes Figure 1 The schematic diagram of the structure after the transmission shaft is omitted;

[0040] Figure 5 yes Figure 4 Schematic diagram of partial structural explosion;

[0041] Figure 6 It is a schematic diagram of the structure after the fixing flange, the connecting flange and the bolts are assembled in the present invention;

[0042] Figure 7 yes Figure 6 A schematic diagram of the structure from another perspective;

[0043] Figure 8 yes Figure 7 Schematic diagram of explosion decomposition;

[0044] Fig. 9 yes Figure 8 A schematic diagram of the structure from another perspective;

[0045] Fig.10 It is a schematic diagram of the structure after the nut, the anti-loosening sleeve and the cylindrical rotating part are assembled in the present invention;

[0046] Fig.11 yes Fig.10 Schematic diagram of the explosion decomposition structure;

[0047] Fig.12 yes Fig.11 A schematic diagram of the structure from another perspective;

[0048] Fig.13It is a schematic diagram of the structure after the extension sleeve, the anti-loosening sleeve and the hollow cylinder are assembled in the present invention;

[0049] Fig.14 yes Fig.13 Schematic diagram of the positional relationship of the middle part structure;

[0050] Fig.15 yes Fig.13 A schematic diagram of the structure from another perspective.

[0051] Figure numerals: 1. bridge housing; 2. transmission; 3. connecting flange; 4. fixing flange; 5. end flange; 6. transmission shaft; 7. bolt; 8. pressure plate; 9. welding column; 10. extension sleeve; 11. hollow cylinder; 12. anti-loosening sleeve; 13. bushing mounting hole; 14. groove; 15. rack part; 16. nut; 17. mounting groove; 18. cylindrical rotating part; 19. gear part; 20. deformation joint; 21. clamping surface; 22. connecting pin; 23. rigid sleeve; 24. sealing ring; 25. sliding plug. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] like Figure 1-Figure 15As shown, this embodiment provides an all-terrain vehicle drive assembly device, including a bridge housing 1, a transmission 2, and a transmission shaft 6. The transmission 2 is mounted on the bridge housing 1. The transmission shaft 6 is a currently commonly used cross universal shaft form. The universal joint at one end of the transmission shaft 6 is connected to the engine of the all-terrain vehicle. The end face of the end flange 5 at the other end of the transmission shaft 6 is welded with a welding column 9, and a fixing flange 4 is welded and mounted on the welding column 9, so that the fixing flange 4 is welded and mounted on the universal joint of the transmission shaft 6. The input shaft end of the transmission 2 has a connecting flange 3. In this embodiment, four bushing mounting holes 13 are opened on the end face of the fixing flange 4 opposite to the connecting flange 3. The four bushing mounting holes 13 are arranged in an axial array of the connecting flange 3 and\or the fixing flange 4. An extension sleeve 10 is commonly penetrated in the two bushing mounting holes 13 connected to the connecting flange 3 and the fixing flange 4. The extension sleeve 10 has a certain extension ability. Preferably, The extension sleeve 10 is made of brass, which has good ductility and great mechanical strength. In addition, a rigid sleeve 23 is coaxially penetrated through the middle hole of the extension sleeve 10. The rigid sleeve 23 can be made of 40Gr material, and the hardness after heat treatment is not less than 50HR. In this way, when the bolt 7 squeezes the rigid sleeve 23, the surface of the rigid sleeve 23 is not easy to be worn. The rigid sleeve 23 is penetrated by a bolt 7, and both ends of the bolt 7 pass through the rigid sleeve 23. A pressure plate 8 is fixedly connected to one end of the bolt 7 corresponding to its screw head, and a nut 16 is threadedly sleeved on the other end of the bolt 7. In addition, the outer diameter of the pressure plate 8 is larger than the outer diameter of the extension sleeve 10, so that the surface of the pressure plate 8 will be against the end face of the fixed flange 4. When the bolt 7 is subjected to shear force, the bolt 7 will generate a force on the rigid sleeve 23, and the force is transmitted to the extension sleeve 10, and the extension sleeve 10 generates extension, so that the bolt 7 is buffered when subjected to shear force.

[0054] Combination Figure 8 , Fig. 9 , Fig.13 , Fig.14 and Fig.15As shown, a connecting pin 22 is welded on both sides of the periphery of the rigid sleeve 23, and the two connecting pins 22 are symmetrically arranged along the axis of the rigid sleeve 23. A through hole is provided on the periphery of the extension sleeve 10 for the connecting pin 22 to pass freely. The end surfaces of the opposite ends of the connecting flange 3 and the fixed flange 4 are correspondingly provided with a sliding groove for the connecting pin 22 to pass freely. The end surfaces of the opposite ends of the connecting flange 3 and the fixed flange 4 are also provided with a concave groove 14. The two intersecting grooves 14 are jointly engaged with the hollow cylinder 11, and the end surface of the hollow cylinder 11 is provided with a A through hole for the connecting pin 22 to freely pass through, a sliding plug 25 is engaged in the hollow cylinder 11, the sliding plug 25 slides freely in the hollow cylinder 11, and a storage cavity for storing hydraulic oil is formed between the end surface of the sliding plug 25 and the inner wall of the hollow cylinder 11, and one end of the connecting pin 22 that penetrates into the hollow cylinder 11 is connected to the sliding plug 25, when the sliding plug 25 moves toward the inner side of the storage cavity, the sliding plug 25 will squeeze the hydraulic oil in the storage cavity, and then the hydraulic oil will generate a hydraulic damping force on the movement of the sliding plug 25;

[0055] An annular assembly groove is provided on the periphery of the sliding plug 25, and a sealing ring 24 is installed in the annular assembly groove. The outer diameter of the sealing ring 24 is larger than the outer diameter of the sliding plug 25, so that the sealing ring 24 has a better sealing effect on the connection surface between the sliding plug 25 and the inner wall of the storage chamber. In addition, the inner diameter of the hollow cylinder 11 can be set to decrease in sequence in the direction away from the rigid sleeve 23. The outer diameter of the sliding plug 25 is not larger than the minimum inner diameter of the hollow cylinder 11, and the outer diameter of the sealing ring 24 is not smaller than the maximum inner diameter of the hollow cylinder 11. The axis of the two adjacent hollow cylinders 11 is parallel to the tangent of the axial rotation trajectory of the bolt 7 around the connecting flange 3. When When the bolt 7 is subjected to shear force, the bolt 7 will generate a corresponding force on the sliding plug 25 through the connecting pin 22, so that the sliding plug 25 squeezes the hydraulic oil in the corresponding hollow cylinder 11, and then the bolt 7 is damped and buffered by the hydraulic damping force of the hydraulic oil. The inner diameter of the hollow cylinder 11 decreases in sequence in the direction away from the rigid sleeve 23, so that the squeezing force of the inner wall of the hollow cylinder 11 on the sealing ring 24 increases, and then the sealing effect of the sealing ring 24 on the connection between the sliding plug 25 and the inner wall of the hollow cylinder 11 is improved. In this way, as the hydraulic damping force increases, the sealing effect of the sealing ring 24 and the inner wall of the storage chamber is better;

[0056] Combination Fig.10 , Fig.11 and Fig.12As shown, an anti-loosening sleeve 12 is mounted on one end of the bolt 7 away from the pressure plate 8, and the anti-loosening sleeve 12 can slide and rotate freely on the bolt 7. A deformation seam 20 in the form of a notch is provided at the periphery of the anti-loosening sleeve 12. The deformation seam 20 is connected to the middle hole of the anti-loosening sleeve 12. One side of the deformation seam 20 passes through the periphery of the anti-loosening sleeve 12, and the anti-loosening sleeve 12 can produce expansion deformation or contraction deformation along the position of the deformation seam 20. An installation groove 17 is provided on one end face of the anti-loosening sleeve 12 facing the connecting flange 3, and a cylindrical rotating part 18 is rotatably connected to the inner wall of the installation groove 17. The cylindrical rotating part 18 A clamping surface 21 is provided at the periphery, and the clamping surface 21 abuts against the inner wall of the deformation joint 20. The distance between the surface of the clamping surface 21 and the axis of the cylindrical rotating part 18 is smaller than the radius of the cylindrical rotating part 18. A gear-shaped gear part 19 is provided at the periphery of the cylindrical rotating part 18, and a rack part 15 meshing with the gear part 19 is provided at the end face of the connecting flange 3. When the bolt 7 is deflected by the shear force, the bolt 7 generates a deflection movement, and the rack part 15 and the gear part 19 are meshed, so that the gear part 19 drives the cylindrical rotating part 18 to rotate, so that the clamping surface 21 starts to The contact with the inner wall of the deformation joint 20 is broken away, and the peripheral part of the cylindrical rotating part 18 contacts the inner wall of the deformation joint 20, so that the deformation joint 20 can be expanded, so that the anti-loosening sleeve 12 can be in an expanded deformation state, so that the end face of the anti-loosening sleeve 12 is pressed against the nut 16, so that when the bolt 7 is subjected to shear force and vibrates, the nut 16 is prevented from loosening. Furthermore, the anti-loosening sleeve 12 can be made of spring steel. The spring steel material has good elastic deformation ability and a small degree of plastic deformation. Therefore, when the anti-loosening sleeve 1 After elastic expansion and the force disappears, the anti-loosening sleeve 12 will change from elastic expansion deformation to elastic contraction deformation, that is, the anti-loosening sleeve 12 can recover through its own elastic deformation ability, so that after the mouth of the deformation joint 20 is expanded, the anti-loosening sleeve 12 can automatically recover to the initial state. In addition, it should be noted that since the vibration amplitude of the bolt 7 is not too large, the expansion degree of the mouth of the deformation joint 20 is not too large, so as to avoid the excessive expansion amplitude of the mouth of the deformation joint 20 on the anti-loosening sleeve 12, thereby causing the anti-loosening sleeve 12 to break.

[0057] The working principle of this embodiment is as follows: during the starting process of the automobile engine, the drive shaft 6 will be driven to rotate. At the moment of rotation of the drive shaft 6, the bolt 7 will be subjected to a large shear force. At this time, the bolt 7 is subjected to a shear force in the tangential direction of the axial rotation trajectory of the bolt 7 around the fixed flange 4 (or the connecting flange 3). The bolt 7 will generate an extrusion force on the rigid sleeve 23, and the force of the rigid sleeve 23 will be transmitted to the extension sleeve 10. If the extension sleeve 10 has a large extension degree or the extension sleeve 10 has a large wear amount, at this time, the rigid sleeve 23 will drive the connecting pin 22 and the sliding plug 25 on one side to move toward the inside of the storage cavity, and the connecting pin 22 and the sliding plug 25 on the other side to move toward the outside of the storage cavity of the other hollow cylinder 11, so that the hydraulic oil in the storage cavity generates a damping force on the sliding plug 25, thereby buffering the shear force of the bolt 7;

[0058] In addition, when the sliding plug 25 moves toward the inner side of the storage chamber, the sliding plug 25 will squeeze the hydraulic oil in the storage chamber. The hydraulic oil in the storage chamber is squeezed, and the hydraulic damping inside the storage chamber increases rapidly. When the sliding plug 25 moves in the direction away from the rigid sleeve 23, the inner diameter of the hollow cylinder 11 decreases, so that the squeezing force of the sealing ring 24 on the inner wall of the hollow cylinder 11 increases, thereby improving the sealing effect of the sealing ring 24 on the connection between the sliding plug 25 and the inner wall of the hollow cylinder 11. In this way, as the hydraulic damping force increases, the sealing effect of the sealing ring 24 and the inner wall of the storage chamber is better.

[0059] If the extension sleeve 10 is worn a lot, the bolt 7 may generate a certain vibration amplitude when subjected to shear force (the direction of the vibration force is consistent with the tangent direction of the rotation trajectory of the bolt 7 around the axis of the fixing flange 4). At this time, the bolt 7 may produce a certain offset. When the bolt 7 is offset by the shear force, the bolt 7 produces an offset movement, the rack portion 15 and the gear portion 19 are meshed, and the gear portion 19 drives the cylindrical rotating portion 18 to rotate, so that the clamping surface 21 begins to break away from the contact with the inner wall of the deformation joint 20, and the peripheral portion of the cylindrical rotating portion 18 contacts the inner wall of the deformation joint 20, so that the deformation joint 20 can be expanded. In this way, the anti-loosening sleeve 12 can be in an expanded deformation state, and the end face of the anti-loosening sleeve 12 is pressed against the nut 16, so that when the bolt 7 is subjected to shear force and vibrates, the nut 16 is prevented from loosening.

[0060] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. An all-terrain vehicle drive assembly device, comprising a bridge housing (1), a transmission (2), and a transmission shaft (6), wherein a connecting flange (3) of an input shaft of the transmission (2) is detachably connected to the transmission shaft (6), and characterized in that: Also includes: A fixed flange (4) fixedly connected to the end of the transmission shaft (6), wherein a plurality of bushing mounting holes (13) are formed on the end surface of the fixed flange (4) opposite to the connecting flange (3); An extension sleeve (10) installed in the bushing installation hole (13), wherein a rigid sleeve (23) is coaxially passed through a central hole of the extension sleeve (10); A bolt (7) is inserted into the rigid sleeve (23), with both ends of the bolt (7) passing through the rigid sleeve (23), one end of the bolt (7) corresponding to the screw head thereof being fixedly connected to a pressing plate (8), and the other end of the bolt (7) being threadedly sleeved with a nut (16); a damping structure mounted on end surfaces of opposite ends of the fixing flange (4) and the connecting flange (3), the damping structure being used to generate a damping force on the tangential direction movement of the bolt (7) around the axis of rotation of the connecting flange (3); The damping structure comprises connecting pins (22) fixedly connected to both sides of the periphery of the rigid sleeve (23); the periphery of the extension sleeve (10) is provided with through holes for the connecting pins (22) to pass freely; the end surfaces of the connecting flange (3) and the fixed flange (4) at opposite ends are correspondingly provided with sliding grooves for the connecting pins (22) to pass freely; the end surfaces of the connecting flange (3) and the fixed flange (4) at opposite ends are also provided with recessed grooves (14); the two intersecting grooves (14) A hollow cylinder (11) is engaged with each other, and a through hole is provided on the end surface of the hollow cylinder (11) for the connecting pin (22) to freely pass through. A sliding plug (25) is engaged in the hollow cylinder (11), and the sliding plug (25) slides freely in the hollow cylinder (11), and a storage cavity for storing hydraulic oil is formed between the end surface of the sliding plug (25) and the inner wall of the hollow cylinder (11), and one end of the connecting pin (22) that penetrates into the hollow cylinder (11) is connected to the sliding plug (25).

2. The all-terrain vehicle drive assembly device according to claim 1, characterized in that: The extension sleeve (10) is made of brass.

3. The all-terrain vehicle drive assembly device according to claim 1, characterized in that: The outer diameter of the pressing plate (8) is greater than the outer diameter of the extension sleeve (10).

4. The all-terrain vehicle drive assembly device according to claim 1, characterized in that: The sliding plug (25) is provided with an annular assembly groove on its periphery, a sealing ring (24) is installed in the annular assembly groove, and the outer diameter of the sealing ring (24) is larger than the outer diameter of the sliding plug (25).

5. The all-terrain vehicle drive assembly device according to claim 4, characterized in that: The inner diameter of the hollow cylinder (11) decreases in a direction away from the rigid sleeve (23); the outer diameter of the sliding plug (25) is not greater than the minimum inner diameter of the hollow cylinder (11); and the outer diameter of the sealing ring (24) is not less than the maximum inner diameter of the hollow cylinder (11).

6. The all-terrain vehicle drive assembly device according to claim 1, characterized in that: The axis centers of the two adjacent hollow cylinders (11) are parallel to the tangent line of the axial rotation trajectory of the bolt (7) around the connecting flange (3).

7. The all-terrain vehicle drive assembly device according to claim 1, characterized in that: An anti-loosening structure is sleeved on one end of the bolt (7) away from the pressure plate (8); the anti-loosening structure is arranged between the nut (16) and the end surface of the connecting flange (3) and is used to generate a force on the nut (16) to move in a direction away from the rigid sleeve (23).

8. The all-terrain vehicle drive assembly device according to claim 7, characterized in that: The anti-loosening structure comprises an anti-loosening sleeve (12) sleeved on the end of the bolt (7) away from the pressure plate (8), the anti-loosening sleeve (12) is provided with a deformation seam (20) in the form of a notch on its periphery, the anti-loosening sleeve (12) is provided with a mounting groove (17) on one end surface facing the connecting flange (3), a cylindrical rotating part (18) is rotatably connected to the inner wall of the mounting groove (17), a clamping surface (21) is provided on the periphery of the cylindrical rotating part (18), the clamping surface (21) abuts against the inner wall of the deformation seam (20), and a rotating component for driving the cylindrical rotating part (18) to rotate is provided on the anti-loosening sleeve (12).

9. The all-terrain vehicle drive assembly device according to claim 8, characterized in that: The rotating assembly comprises a gear portion (19) disposed on the periphery of the cylindrical rotating portion (18), and an end surface of the connecting flange (3) is provided with a rack portion (15) meshing with the gear portion (19).

Images