A wear-resistant cross shaft universal joint

Abstract

The utility model provides a kind of wear-resistant cross shaft universal coupling, including shaft sleeve, the both ends inside sliding connection of shaft sleeve has connecting shaft, and the end of connecting shaft away from shaft sleeve is fixedly installed with first U-shaped frame, and first U-shaped frame inside rotationally connected with cross universal joint, and cross universal joint outside is installed with second U-shaped frame, and the side of second U-shaped frame away from first U-shaped frame is fixedly installed with flange, and shaft sleeve outer wall is fixedly installed with rectangular frame symmetrically, and rectangular frame inside rotationally connected with threaded rod, and the outer wall of threaded rod is connected with sliding block with thread, and sliding block top is fixedly installed with L-shaped connecting rod.The utility model is through the cooperation of threaded rod, sliding block and L-shaped connecting rod, can flexibly adjust overall length, effectively compensate installation datum deviation, equipment vibration or component deformation causes installation misplacement, avoid producing additional load when running, reduce the abnormal friction and extrusion of core component, both improve transmission efficiency, and significantly reduce component wear speed.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a wear-resistant universal joint. Background Technology

[0002] Universal joints are key components in mechanical transmission systems that enable power transmission between different shaft systems, and are widely used in automobiles, construction machinery, machine tools and other fields.

[0003] During actual installation and use, factors such as installation benchmark deviation, vibration during equipment operation, or component deformation can easily lead to misalignment of the coupling. Most existing universal joints do not have length adjustment functions and cannot compensate for installation misalignment. This misalignment will generate additional loads during the operation of the coupling. These loads act directly on core transmission components such as the universal joint and needle roller bearings, causing abnormal friction and compression between components. This not only reduces transmission efficiency but also accelerates the wear of key components, seriously shortens the overall service life of the coupling, and affects the stable operation of the equipment. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, this utility model proposes a wear-resistant universal joint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wear-resistant universal joint includes a bushing, with connecting shafts slidably connected to both ends of the bushing. A first U-shaped bracket is fixedly mounted at the end of the connecting shaft away from the bushing. A universal joint is rotatably connected inside the first U-shaped bracket. A second U-shaped bracket is mounted outside the universal joint. A flange is fixedly mounted on the side of the second U-shaped bracket away from the first U-shaped bracket. Rectangular frames are symmetrically fixedly mounted on the outer wall of the bushing. A threaded rod is rotatably connected inside the rectangular frame. A sliding block is threadedly connected to the outer wall of the threaded rod. An L-shaped connecting rod is fixedly mounted on the top of the sliding block. A gear is fixedly mounted at one end of the threaded rod. A housing is fixedly mounted at the end of the rectangular frame near the gear. Return springs are uniformly fixedly mounted on the inner surface of the housing. A ring is fixedly mounted at the end of the return spring away from the rectangular frame. A connecting rod is uniformly fixedly mounted on the side of the ring away from the return spring. A gear ring is fixedly mounted at the end of the connecting rod away from the ring.

[0006] Preferably, the second U-shaped frame is rotatably connected to the universal joint.

[0007] Preferably, the L-shaped connecting rod is fixedly connected to the connecting shaft.

[0008] Preferably, the sliding block is slidably connected to the rectangular frame, and the ring and connecting rod are both slidably connected to the housing.

[0009] Preferably, the gear ring and the gear are slidably connected.

[0010] Preferably, the inner wall of the bushing is uniformly provided with limit grooves, and the outer wall of the connecting shaft is uniformly fixedly installed with limit strips, and the limit strips are slidably connected to the limit grooves.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model, through the cooperation of a threaded rod, a sliding block, and an L-shaped connecting rod, can flexibly adjust the overall length, effectively compensating for installation misalignment caused by installation benchmark deviation, equipment vibration, or component deformation. It avoids additional loads during operation, reduces abnormal friction and compression of core components, improves transmission efficiency, significantly reduces component wear rate, extends the overall service life of the coupling, and ensures the stability of equipment operation. At the same time, the cooperation of the limiting groove and the limiting strip ensures the smooth movement of the connecting shaft and the accuracy of transmission, while the locking structure of the gear and the gear ring ensures the stability after length adjustment. The overall structure is reasonably designed, highly practical, and suitable for power transmission needs in various fields such as automobiles, construction machinery, and machine tools. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a wear-resistant universal joint is provided for this utility model; Figure 2 This utility model presents a partial structural schematic diagram of a wear-resistant universal joint. Figure 3 This utility model provides a partial structural cross-sectional schematic diagram of a wear-resistant universal joint. Figure 4 This utility model provides a partial cross-sectional view of a wear-resistant universal joint. Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0013] Legend: 1. Bushing; 2. Connecting shaft; 3. First U-shaped bracket; 4. Universal joint; 5. Second U-shaped bracket; 6. Flange; 7. Rectangular frame; 8. Threaded rod; 9. Sliding block; 10. L-shaped connecting rod; 11. Gear; 12. Housing; 13. Return spring; 14. Ring; 15. Connecting rod; 16. Gear ring; 17. Limiting groove; 18. Limiting strip. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Example: Figures 1-5 As shown, this utility model provides a wear-resistant universal joint, including a bushing 1. A connecting shaft 2 is slidably connected to both ends of the bushing 1. A first U-shaped bracket 3 is fixedly installed at the end of the connecting shaft 2 away from the bushing 1. A universal joint 4 is rotatably connected inside the first U-shaped bracket 3. A second U-shaped bracket 5 is installed outside the universal joint 4. A flange 6 is fixedly installed on the side of the second U-shaped bracket 5 away from the first U-shaped bracket 3. Rectangular frames 7 are symmetrically fixedly installed on the outer wall of the bushing 1. A threaded rod 8 is rotatably connected inside the rectangular frame 7. A sliding block 9 is threadedly connected to the outer wall of the threaded rod 8. An L-shaped connecting rod 10 is fixedly installed on the top of the sliding block 9. A gear 11 is fixedly installed at one end of the threaded rod 8. A connecting rod 10 is fixedly installed at the end of the rectangular frame 7 near the gear 11. The housing 12 has a set of return springs 13 uniformly fixedly installed on its inner surface. A ring 14 is fixedly installed on the end of the return spring 13 away from the rectangular frame 7. A connecting rod 15 is uniformly fixedly installed on the side of the ring 14 away from the return spring 13. A toothed ring 16 is fixedly installed on the end of the connecting rod 15 away from the ring 14. The second U-shaped frame 5 is rotatably connected to the universal joint 4. Limit grooves 17 are uniformly opened on the inner wall of the bushing 1. Limit strips 18 are uniformly fixedly installed on the outer wall of the connecting shaft 2. The limit strips 18 are slidably connected to the limit grooves 17. The L-shaped connecting rod 10 is fixedly connected to the connecting shaft 2. The sliding block 9 is slidably connected to the rectangular frame 7. The ring 14 and the connecting rod 15 are slidably connected to the housing 12. The toothed ring 16 is slidably connected to the gear 11.

[0017] In this embodiment, the overall length can be flexibly adjusted through the cooperation of the threaded rod 8, the sliding block 9, and the L-shaped connecting rod 10. This effectively compensates for installation misalignment caused by installation benchmark deviation, equipment vibration, or component deformation, avoids additional loads during operation, reduces abnormal friction and compression of core components, improves transmission efficiency, significantly reduces component wear rate, extends the overall service life of the coupling, and ensures the stability of equipment operation. At the same time, the cooperation between the limiting groove 17 and the limiting strip 18 ensures the smooth movement of the connecting shaft 2 and the accuracy of transmission. The locking structure of the gear 11 and the gear ring 16 ensures the stability after length adjustment. The overall structure is reasonably designed, highly practical, and suitable for power transmission needs in various fields such as automobiles, construction machinery, and machine tools.

[0018] The working principle of this embodiment is as follows: When the length of the coupling needs to be adjusted to suit the installation requirements, the gear ring 16 is first pushed towards the housing 12. The gear ring 16 will drive the connecting rod 15, which is fixedly connected to it, to move synchronously. The connecting rod 15 will then push the ring 14 connected to its other end to slide inside the housing 12. During this process, the ring 14 will compress the return spring 13, which is evenly installed on the inner surface of the housing 12, causing the return spring 13 to gradually contract and deform. As the gear ring 16 is continuously pushed, it will continue to be pushed until the gear ring 16 is completely separated from the gear 11 fixed at one end of the threaded rod 8, releasing the meshing limit between the gear 11 and the gear ring 16. At this time, the threaded rod 8 is no longer restricted from rotation. Subsequently, the operator can manually rotate the gear 11 to drive the threaded rod 8 to rotate. 8 is rotatably connected inside the rectangular frame 7, and its outer wall forms a threaded engagement with the sliding block 9. Simultaneously, the sliding block 9 is slidably connected to the inner wall of the rectangular frame 7. When the threaded rod 8 rotates, the sliding block 9 moves linearly along the length of the rectangular frame 7. The L-shaped connecting rod 10 fixed at the top of the sliding block 9 moves along with the sliding block 9. The end of the L-shaped connecting rod 10 away from the sliding block 9 is fixedly connected to the connecting shaft 2, thus causing the connecting shaft 2 to slide inside the bushing 1. During this process, the limiting strips 18 uniformly fixed on the outer wall of the connecting shaft 2 form a sliding engagement with the corresponding limiting grooves 17 on the inner wall of the bushing 1. The limiting grooves 17 guide and constrain the limiting strips 18, preventing the connecting shaft 2 from rotating circumferentially during sliding and ensuring that the connecting shaft 2 always remains stable. Maintaining a stable movement trajectory ensures the accuracy of subsequent transmission. When the connecting shaft 2 slides along the bushing 1 until the overall length of the coupling reaches the appropriate size required for installation, stop rotating the gear 11 and release the thrust on the gear ring 16. At this time, the return spring 13, which is in a contracted state, will release its elastic potential energy, pushing the ring 14 to return to its original position away from the rectangular frame 7 within the housing 12. The ring 14 drives the connecting rod 15 to move in the opposite direction, and the connecting rod 15 in turn pushes the gear ring 16 to move closer to the gear 11 until the gear ring 16 is fully engaged with the gear 11 again. The engagement of the teeth between the gear ring 16 and the gear 11 locks the threaded rod 8, preventing the threaded rod 8 from rotating on its own during subsequent operation and causing length deviation. After completing the length adjustment and locking, the coupling is... The device is connected and fixed to the external equipment to be driven via a flange 6 fixed on one side of the second U-shaped frame 5. When the equipment is running, power is transmitted from one flange 6 to the second U-shaped frame 5. The second U-shaped frame 5 drives the universal joint 4 to rotate. The universal joint 4 rotates synchronously within the first U-shaped frame 3. At the same time, the first U-shaped frame 3 transmits power to the connecting shaft 2. The connecting shaft 2 then transmits power through the bushing 1 to the connecting shaft 2, the first U-shaped frame 3, the universal joint 4, and the flange 6 at the other end, ultimately realizing the power transmission between the two external devices. During this process, the previously adjusted coupling length can effectively compensate for installation reference deviations, installation misalignments caused by equipment operating vibrations or long-term deformation of components, combined with the multi-angle rotation characteristics of the universal joint 4 itself.To further eliminate the impact of misalignment on transmission, ensure smooth and efficient power transmission, and avoid generating additional loads.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A wear-resistant universal joint, comprising a bushing (1), characterized in that: The bushing (1) is internally connected to a connecting shaft (2) at both ends. A first U-shaped bracket (3) is fixedly installed at the end of the connecting shaft (2) away from the bushing (1). A universal joint (4) is rotatably connected inside the first U-shaped bracket (3). A second U-shaped bracket (5) is installed outside the universal joint (4). A flange (6) is fixedly installed on the side of the second U-shaped bracket (5) away from the first U-shaped bracket (3). A rectangular frame (7) is symmetrically fixedly installed on the outer wall of the bushing (1). A threaded rod (8) is rotatably connected inside the rectangular frame (7). A sliding block is threadedly connected to the outer wall of the threaded rod (8). 9) An L-shaped connecting rod (10) is fixedly installed on the top of the sliding block (9). A gear (11) is fixedly installed on one end of the threaded rod (8). A housing (12) is fixedly installed on the end of the rectangular frame (7) near the gear (11). A reset spring (13) is evenly fixedly installed on the inner surface of the housing (12). A ring (14) is fixedly installed on the end of the reset spring (13) away from the rectangular frame (7). A connecting rod (15) is evenly fixedly installed on the side of the ring (14) away from the reset spring (13). A toothed ring (16) is fixedly installed on the end of the connecting rod (15) away from the ring (14).

2. The wear-resistant universal joint according to claim 1, characterized in that: The second U-shaped frame (5) is rotatably connected to the cross universal joint (4).

3. The wear-resistant universal joint according to claim 1, characterized in that: The L-shaped connecting rod (10) is fixedly connected to the connecting shaft (2).

4. The wear-resistant universal joint according to claim 1, characterized in that: The sliding block (9) is slidably connected to the rectangular frame (7), and the ring (14) and the connecting rod (15) are slidably connected to the housing (12).

5. The wear-resistant universal joint according to claim 1, characterized in that: The gear ring (16) is slidably connected to the gear (11).

6. The wear-resistant universal joint according to any one of claims 1 to 5, characterized in that: The inner wall of the bushing (1) is uniformly provided with a limiting groove (17), and the outer wall of the connecting shaft (2) is uniformly fixedly installed with a limiting strip (18), and the limiting strip (18) and the limiting groove (17) are slidably connected.

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