A roller cage lug support mounting structure

Abstract

The utility model discloses a kind of roller cage bracket mounting structures in the technical field of roller cage bracket, including bottom plate support, buffer, support, roller, hinged axle and bearing, the support bottom is connected with bottom plate support by hinged axle, bearing is uniformly provided between the hinged axle and support and bottom plate support, mounting hole is set in the middle part of the hinged axle, first through-hole is set in the right end of the mounting hole, second through-hole is set in the right end of the first through-hole, conical fixed shaft is set in the mounting hole, in the process of moving right to conical fixed shaft, by bevel cooperation, push fixed plate to move to the outside of conical fixed shaft, and bear against bearing inner ring inner wall, eliminate the gap between hinged axle and bearing inner ring inner wall, make the mating surface closely adhere by axial compression force, with the increase of axial displacement, conical surface radial expansion or shrink, to eliminate radial clearance, avoid stress concentration, reduce fatigue wear, to prolong the service life of roller cage bracket.

Description

Technical Field

[0001] This utility model relates to the field of roller can ear technology, specifically a roller can ear bracket installation structure. Background Technology

[0002] In mine hoisting systems, roller lugs are key components that ensure the smooth operation of hoisting containers (such as cages or skips) along the guide device. Their core function is to buffer vibrations, reduce impacts, and maintain the stability of the running trajectory through the contact between the rollers and the guide. However, in practical applications, the installation clearance between the shaft and bearing of the roller can ear has long plagued the reliability and lifespan of the equipment. After long-term exposure to alternating and impact loads, the contact surface between the bearing inner ring and the trunnion is prone to wear, or the shaft may undergo plastic deformation due to stress concentration, further widening the clearance and causing accelerated wear between the shaft and bearing, thus reducing the service life of the roller can ear. Traditional interference fits, although they can reduce the initial clearance, result in excessive assembly stress and are only suitable for mounting the bearing on a bracket or roller can ear base plate bracket. When mounting the bearing on the bracket or roller can ear bracket, a steel ring of the same size as the bearing outer ring can be used. By applying pressure to the steel ring, the bearing can be mounted on the bracket or base plate bracket. However, for the installation between the hinge shaft and the bearing inner ring, if an interference fit is used, the hinge shaft will apply a large pressure to the bearing inner ring when it is installed into the bearing inner ring, causing the balls between the bearing inner ring and the bearing outer ring to shift. The excessive force on the balls directly causes bearing damage.

[0003] Therefore, we propose a roller can ear bracket mounting structure. Utility Model Content

[0004] The purpose of this utility model is to provide a roller can ear bracket mounting structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a roller can ear bracket mounting structure, including a base plate bracket, a buffer, a bracket, a roller, a hinge shaft, and a bearing. The bottom of the bracket is connected to the base plate bracket via the hinge shaft, and bearings are provided between the hinge shaft and both the bracket and the base plate bracket. The mounting hole is located in the middle of the hinge shaft; The first through hole is located at the right end of the mounting hole; The second through hole is located at the right end of the first through hole; A tapered fixed shaft is disposed within the mounting hole; The connecting rod is fixedly connected to the right end of the tapered fixed shaft; A threaded rod is fixedly connected to the right end of the connecting rod. Nut, the nut is provided on the threaded rod; A through slot is provided at the top of the mounting hole; A limiting groove is provided at the end of the through groove; A fixing plate is installed inside the through groove; A limiting plate is fixedly installed at the end of the fixed plate.

[0006] Preferably, a fixing groove is provided at the right end of the hinge shaft surface, and a retaining spring is provided in the fixing groove.

[0007] Preferably, a side plate is provided at the left end of the hinge shaft.

[0008] Preferably, the right end of the threaded rod is provided with a groove, which is configured as a regular hexagon.

[0009] Preferably, the bottom of the fixing plate is configured as an arc-shaped inclined surface that cooperates with the tapered fixing shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: During the rotation of the nut, the threaded rod pulls the conical fixed shaft to move to the right through the connecting rod. Three sets of fixed plates and through slots are evenly arranged around the center of the hinge shaft. The bottom of the fixed plate is set as an inclined surface. During the movement of the conical fixed shaft to the right, the inclined surface cooperates to push the fixed plate to move outward of the conical fixed shaft and press against the inner wall of the bearing inner ring, eliminating the gap between the hinge shaft and the inner wall of the bearing inner ring. By tightening the nut, the axial clamping force makes the mating surfaces fit tightly. As the axial displacement increases, the conical surface expands or contracts radially, thereby eliminating the radial gap. After eliminating the gap, the contact between the shaft and the bearing inner ring is tighter, which can reduce the radial or axial fretting caused by the gap. The gap will cause the bearing rolling elements to be stressed only in a local area, while pre-tightening can make the load evenly distributed, avoid stress concentration, reduce fatigue wear, and thus extend the service life of the roller lug. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the hinge shaft of this utility model.

[0012] In the diagram: 1. Base plate bracket; 2. Buffer; 3. Bracket; 4. Roller; 5. Hinge shaft; 51. Bearing; 6. Mounting hole; 7. First through hole; 8. Second through hole; 9. Tapered fixed shaft; 10. Connecting rod; 11. Threaded rod; 12. Nut; 13. Through groove; 14. Limiting groove; 15. Fixing plate; 16. Limiting plate; 17. Fixing groove; 18. Snap ring; 19. Groove; 20. Side plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-2 This utility model provides a technical solution: a roller can ear bracket installation structure, including a base plate bracket 1, a buffer 2, a bracket 3, a roller 4, a hinge shaft 5, and a bearing 51. The bottom of the bracket 3 is connected to the base plate bracket 1 through the hinge shaft 5. Bearings 51 are provided between the hinge shaft 5, the bracket 3, and the base plate bracket 1. The mounting hole is located in the middle of the hinge shaft 5. The first through hole 7 is located at the right end of the mounting hole 6. The second through hole 8 is located at the right end of the first through hole 7. The tapered fixing shaft 9 is located in the mounting hole 6. The connecting rod 10 is fixedly connected to the right end of the tapered fixing shaft 9. The threaded rod 11 is fixedly connected to the right end of the connecting rod 10. The nut 12 is located on the threaded rod 11. The through groove 13 is located at the top of the mounting hole 6. The limiting groove 14 is located at the end of the through groove 13. The fixing plate 15 is installed in the through groove 13. The limiting plate 16 is fixedly installed at the end of the fixing plate 15. When bracket 3 is installed, align the holes on bracket 3 with the bearings 51 on the base plate bracket 1. The hinge shaft 5 passes through the bearings 51 to install bracket 1. After the hinge shaft 5 passes through the bearings 51 on the base plate bracket 1 and bracket 2, use a tool (such as a wrench) to turn the nut 12. The nut 12 engages with the threaded rod 11 and presses against the right end surface of the hinge shaft 5. During the rotation of the nut 12, the threaded rod 11 pulls the tapered fixed shaft 9 to the right via the connecting rod 10. Three sets of fixing plates 15 and through slots 13 are evenly distributed around the center of the hinge shaft 5. The bottom of the fixing plate 15 is set as an inclined surface. During the rightward movement of the tapered fixed shaft 9, the inclined surface engages, pushing the fixing plate 15 towards the tapered direction. The fixed shaft 9 moves externally and presses against the inner wall of the inner ring of the bearing 51, eliminating the gap between the hinge shaft 5 and the inner wall of the inner ring of the bearing 51. By tightening the nut 12, the mating surfaces are tightly fitted by axial clamping force. As the axial displacement increases, the conical surface expands or contracts radially, thereby eliminating the radial gap. After eliminating the gap, the contact between the shaft and the inner ring of the bearing is tighter, which can reduce the radial or axial fretting caused by the gap. The gap will cause the bearing rolling elements to be stressed only in a local area, while pre-tightening can make the load evenly distributed, avoid stress concentration, reduce fatigue wear, and thus extend the service life of the roller lug. In addition, there are two sets of nuts 12. The pre-tightening is performed by installing the two sets of nuts 12 on the threaded rod 11, which effectively prevents the nuts 12 from loosening.

[0015] Reference embodiment: A fixing groove 17 is provided on the right end of the surface of the hinge shaft 5, and a retaining spring 18 is provided in the fixing groove 17. A side plate 20 is provided on the left end of the hinge shaft 5. The side plate 20 and the retaining spring 18 are installed to provide an extra layer of security for the installation and fixing of the hinge shaft 5, thereby improving the safety of the roller can ear during use.

[0016] Reference embodiment: A groove 19 is provided at the right end of the threaded rod 11. The groove 19 is set as a regular hexagon. When the threaded rod 11 moves to the right during the rotation of the nut 12, an Allen wrench is inserted into the groove 19 and placed in the nut 11 for pre-tightening. During this process, the threaded rod 11 will not rotate at the same time as the nut 12.

[0017] Reference embodiment: The bottom of the fixing plate 15 is set with an arc-shaped inclined surface that cooperates with the tapered fixing shaft 9. The threaded rod 11 pulls the tapered fixing shaft 9 to move through the connecting rod 10. The tapered fixing shaft 9 moves to the right, pushing the fixing plate 15 to move outward of the hinge shaft 5, pressing against the inner wall of the inner ring of the bearing 51, and eliminating the installation gap between the hinge shaft 5 and the bearing 51.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller can ear bracket mounting structure, characterized in that, It includes a base plate support (1), a buffer (2), a support (3), a roller (4), a hinge (5) and a bearing (51). The bottom of the support (3) is connected to the base plate support (1) through the hinge (5). A bearing (51) is provided between the hinge (5) and the support (3) and the base plate support (1). Mounting hole (6) is provided in the middle of the hinge shaft (5); The first through hole (7) is located at the right end of the mounting hole (6); The second through hole (8) is located at the right end of the first through hole (7); A tapered fixed shaft (9) is provided inside the mounting hole (6); Connecting rod (10), the connecting rod (10) is fixedly connected to the right end of the tapered fixed shaft (9); Threaded rod (11) is fixedly connected to the right end of the connecting rod (10); Nut (12), nut (12) is provided on the threaded rod (11); A through groove (13) is provided at the top of the mounting hole (6); A limiting groove (14) is provided at the end of the through groove (13); A fixing plate (15) is installed in the through groove (13); Limiting plate (16) is fixedly installed at the end of the fixing plate (15).

2. The roller can ear bracket mounting structure according to claim 1, characterized in that: A fixing groove (17) is provided on the right end of the surface of the hinge shaft (5), and a retaining ring (18) is provided in the fixing groove (17).

3. The roller can ear bracket mounting structure according to claim 1, characterized in that: A side plate (20) is provided at the left end of the hinge shaft (5).

4. The roller can ear bracket mounting structure according to claim 1, characterized in that: The right end of the threaded rod (11) is provided with a groove (19), which is a regular hexagon.

5. The roller can ear bracket mounting structure according to claim 1, characterized in that: The bottom of the fixing plate (15) is configured as an arc-shaped inclined surface that cooperates with the tapered fixing shaft (9).

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