Shaft sleeve with anti-falling mechanism

Abstract

The utility model relates to the technical field of shaft sleeves, in particular to a shaft sleeve with an anti-falling mechanism, which comprises a shaft sleeve main body, the inner side of the shaft sleeve main body is slidably connected with a rotating shaft, one end of the outer wall of the rotating shaft is provided with a positioning seat, and one end of the outer wall of the shaft sleeve main body is provided with a positioning groove extending to the inner side of the shaft sleeve main body. The positioning seat is in sliding connection with the positioning groove, the rotating shaft is in clamping connection with the shaft sleeve main body through a locking mechanism, the locking mechanism comprises a pushing assembly, an elastic lock assembly and a separating assembly, the pushing assembly is used for being matched with the elastic lock assembly for clamping connection, and the separating assembly is used for unlocking locking between the shaft sleeve main body and the rotating shaft; the shaft sleeve is simple in structure and convenient to operate, workers can conveniently and rapidly combine and disassemble the shaft sleeve body and the rotating shaft, the workers do not need to twist all sets of bolt fixing pieces one by one during disassembly, assembly and maintenance, time and labor are saved during operation, and the disassembly and maintenance efficiency of the workers on the shaft sleeve body and the rotating shaft is further improved.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, specifically to a bushing with an anti-detachment mechanism. Background Technology

[0002] In moving parts, wear occurs due to long-term friction. When the clearance between the shaft and the hole wears to a certain extent, the parts must be replaced. Therefore, designers choose materials with lower hardness and better wear resistance for bushings or sleeves to reduce wear on the shaft and seat. When the bushing or sleeve wears to a certain extent, it can be replaced, saving the cost of replacing the shaft or seat. Existing bushings are usually made of stainless steel with good wear resistance. However, the smooth outer wall of such bushings can lead to reduced stability of the connection with the bearing seat after frequent use and heat generation, which may cause it to fall off when the shaft rotates. To address this, we propose a bushing with an anti-fall-off mechanism.

[0003] To address the aforementioned technical problems, Chinese Patent No. CN221779852U discloses a bushing with an anti-detachment mechanism, comprising a bushing body, which is an annular body. Four internal threaded holes are respectively opened around the circumference of the bushing body. A first hexagonal hole is opened at the upper end of each internal threaded hole near the surface of the bushing body. A fixing rod is threadedly connected to each internal threaded hole. A second hexagonal hole is opened at the top of the fixing rod. A locking rod is inserted into the second hexagonal hole, and the locking rod matches the first hexagonal hole.

[0004] Although the existing technical solution described above achieves waterproof and dustproof effects by setting a waterproof sleeve to seal the gap between the bushing and the shaft core, it still requires workers to rotate each set of fixing rods one by one to lock the bushing body and the shaft core. When the bushing body needs to be disassembled for replacement and maintenance, each set of fixing rods still needs to be twisted one by one to unlock it, which is cumbersome and time-consuming, affecting the efficiency of workers in disassembly and maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a bushing with an anti-detachment mechanism to solve the problem mentioned in the background art that when locking the bushing body and the shaft core, the operator still needs to rotate each set of fixing rods one by one to lock it, and when the bushing body needs to be disassembled for replacement and maintenance, the operator still needs to twist each set of fixing rods one by one to unlock it, which is cumbersome and time-consuming and affects the efficiency of the operator's disassembly and maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bushing with an anti-detachment mechanism includes a bushing body, a rotating shaft slidably connected to the inner side of the bushing body, a positioning seat installed at one end of the outer wall of the rotating shaft, and a positioning groove extending to the inner side of the bushing body at one end of the outer wall of the bushing body. The positioning seat and the positioning groove are slidably connected. The rotating shaft is engaged with the bushing body through a locking mechanism. The locking mechanism includes a pushing component, a spring-locking component, and a separating component. The pushing component is used to engage with the spring-locking component, and the separating component is used to unlock the lock between the bushing body and the rotating shaft.

[0008] As a preferred embodiment of this utility model, the pushing assembly includes a pushing groove located inside the bushing body on one side of the positioning groove. A pushing plate is slidably connected to the inner side of the pushing groove. Sliding grooves are provided on both sides of the pushing groove inside the bushing body. Sliding blocks are installed at both ends of the outer wall of the pushing plate. The sliding blocks are slidably connected to the sliding grooves. A second spring is installed between the sliding blocks and the inner wall of the sliding grooves.

[0009] As a preferred embodiment of this utility model, a first rubber pad is installed on one side of the push plate, and a through hole is opened at one end of the first rubber pad. A top plate is installed on one side of the outer wall of the push plate at the through hole, and a pressing groove is opened on the other side of the outer wall of the push plate.

[0010] As a preferred embodiment of this utility model, the spring lock assembly includes a top groove formed on one side of the outer wall of the positioning seat, the top groove being slidably connected to the top plate, a pressing groove being formed inside the positioning seat on one side of the top groove, a restraining seat being installed on one side of the inner wall of the pressing groove, an anti-detachment groove being formed inside the restraining seat, an anti-detachment block being slidably connected to the inner side of the anti-detachment groove, and a first spring being installed between one side of the anti-detachment block and the inner wall of the anti-detachment groove.

[0011] As a preferred embodiment of this utility model, a guide plate is embedded in one side of the anti-detachment block, a slope corresponding to the surface of the guide plate is formed on one side of the top plate, a toggle groove is formed on one side of the guide plate, an operating rod is rotatably connected to the inner side of the toggle groove, a second rubber pad is embedded in one end of the inner wall of the toggle groove, a baffle is fixedly sleeved on the outer side of the operating rod, and a torsion spring is installed between one end of the operating rod and the inner wall of the toggle groove.

[0012] As a preferred embodiment of this utility model, a snap-fit ​​groove is provided on one side of the outer wall of the top plate at its slope. The cross-section of the snap-fit ​​groove and the baffle is L-shaped. The baffle is made of iron. A magnetic block that attracts the baffle is embedded in one side of the inner wall of the snap-fit ​​groove.

[0013] As a preferred embodiment of this utility model, a drag rod is installed at one end of the operating rod extending to the outside of the guide plate. An operating groove is provided at the top of the positioning seat. A pull groove is provided inside the positioning seat between the operating groove and the pressing groove. The pull groove and the drag rod are slidably connected. A hanging rod is installed on one side of the inner wall of the operating groove. The cross-section of the hanging rod is J-shaped. A rotating rod is rotatably connected to one end of the drag rod extending to the inside of the operating groove. A pull ring is rotatably connected to the outside of the rotating rod. The pull ring is made of rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, a push-fit component is used in conjunction with a spring-lock component for locking, and a separation component releases the lock between the bushing body and the shaft. The structure is simple and easy to operate, allowing workers to quickly assemble and disassemble the bushing body and the shaft without having to twist each set of bolts during disassembly and maintenance. This saves time and effort and further improves the efficiency of workers in disassembling and repairing the bushing body and the shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the rotating shaft and bushing of this utility model;

[0018] Figure 3 This is a partial three-dimensional structural diagram of the positioning seat of this utility model;

[0019] Figure 4 This is a partial cross-sectional view of the main body of the bushing of this utility model;

[0020] Figure 5 This is a partial cross-sectional view of the positioning seat of this utility model.

[0021] In the diagram: 1. Bushing body; 2. Rotating shaft; 3. Positioning seat; 4. Push plate; 5. Sliding block; 6. First rubber pad; 7. Top plate; 8. Restraint seat; 9. Anti-detachment block; 10. First spring; 11. Guide plate; 12. Operating rod; 13. Baffle; 14. Torsion spring; 15. Trailing rod; 16. Ramp; 17. Magnetic block; 18. Hanging rod; 19. Rotating rod; 20. Pull ring; 21. Second rubber pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example: Please refer to Figures 1-5 This utility model provides a technical solution:

[0024] A bushing with an anti-detachment mechanism includes a bushing body 1, a rotating shaft 2 slidably connected to the inner side of the bushing body 1, a positioning seat 3 installed at one end of the outer wall of the rotating shaft 2, and a positioning groove extending to the inner side of the bushing body 1 at one end of the outer wall of the bushing body 1. The positioning seat 3 and the positioning groove are slidably connected. The rotating shaft 2 is engaged with the bushing body 1 through a locking mechanism. The locking mechanism includes a pushing component, a spring-locking component, and a separating component. The pushing component is used to engage with the spring-locking component, and the separating component is used to unlock the lock between the bushing body 1 and the rotating shaft 2. In use, the device can engage with the spring-locking component through the pushing component, and unlock the lock between the bushing body 1 and the rotating shaft 2 through the separating component. The structure is simple and easy to operate, allowing workers to quickly assemble and disassemble the bushing body 1 and the rotating shaft 2 without having to twist each set of bolts or other fasteners during disassembly and maintenance. This saves time and effort and further improves the efficiency of workers in disassembling and repairing the bushing body 1 and the rotating shaft 2.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the pushing assembly includes a pushing groove located inside the bushing body 1 on one side of the positioning groove. A pushing plate 4 is slidably connected to the inner side of the pushing groove. Sliding grooves are provided on both sides of the pushing groove inside the bushing body 1. Sliding blocks 5 are installed at both ends of the outer wall of the pushing plate 4. The sliding blocks 5 are slidably connected to the sliding groove. A second spring is installed between the sliding blocks 5 and the inner wall of the sliding groove. First, the operator can insert the rotating shaft 2 into the bushing body 1, so that the positioning seat 3 slides in along the positioning groove to achieve preliminary positioning and assembly. Then, the operator can press and hold the pressing groove to drive the pushing plate 4. The sliding blocks 5 also slide inside the sliding groove and squeeze the second spring to retract, so that the first rubber pad 6 is attached to the outer wall of the positioning seat 3, so that the top plate 7 slides into the top groove.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, a first rubber pad 6 is installed on one side of the push plate 4. A through hole is opened at one end of the first rubber pad 6. A top plate 7 is installed at the through hole on one side of the outer wall of the push plate 4. A pressing groove is opened on the other side of the outer wall of the push plate 4. The spring lock assembly includes a top groove opened on one side of the outer wall of the positioning seat 3. The top groove and the top plate 7 are slidably connected. A pressing groove is opened on one side of the top groove inside the positioning seat 3. A restraining seat 8 is installed on one side of the inner wall of the pressing groove. An anti-detachment groove is opened inside the restraining seat 8. An anti-detachment block 9 is slidably connected to the inner side of the anti-detachment groove. A first spring 10 is installed between one side of the anti-detachment block 9 and the inner wall of the anti-detachment groove. A guide plate 11 is embedded on one side of the anti-detachment block 9. A slope 16 corresponding to the surface of the guide plate 11 is opened on one side of the top plate 7. A toggle groove is opened on one side of the guide plate 11. An operating rod 12 is rotatably connected to the inner side of the toggle groove. The first rubber pad 6 is embedded in the end of the operating rod 12, and the outer side of the operating rod 12 is fixedly fitted with a baffle 13. A torsion spring 14 is installed between one end of the operating rod 12 and the inner wall of the actuation groove. Then, as the pressure continues, the first rubber pad 6 is compressed. After the top plate 7 contacts the guide plate 11, it forces the anti-detachment block 9 to slide inside the anti-detachment groove, causing the first spring 10 to be squeezed back. As the top plate 7 continues to press down, it will abut against the baffle 13, forcing the operating rod 12 and the torsion spring 14 to retract to the inner side of the actuation groove. After the snap-fit ​​groove is close to the actuation groove, the baffle 13, which is no longer blocked, is popped out by the torsion spring 14 to the inner side of the snap-fit ​​groove. At this time, the push plate 4 can be released to allow the first rubber pad 6 to move back a certain distance and drive the top plate 7 to move back, so that the baffle 13 abuts against the recess of the inner wall of the snap-fit ​​groove, and the magnetic block 17 is attracted to its end, thus completing the positioning between the bushing body 1 and the rotating shaft 2.

[0027] In this embodiment, as Figure 3 , Figure 4 and Figure 5 As shown, a snap-fit ​​groove is provided on one side of the outer wall of the top plate 7 at its slope 16. The cross-section of the snap-fit ​​groove and the baffle 13 is L-shaped. The baffle 13 is made of iron. A magnetic block 17 that attracts the baffle 13 is embedded in one side of the inner wall of the snap-fit ​​groove. Furthermore, after locking, the pull ring 20 can be pulled according to its rubber properties and hung on the hanging rod 18 for positioning to prevent the parts from loosening.

[0028] In this embodiment, as Figure 3 , Figure 4 and Figure 5As shown, a drag rod 15 is installed at one end of the operating lever 12 extending to the outside of the guide plate 11. An operating groove is provided at the top of the positioning seat 3. A pull groove is provided inside the positioning seat 3 between the operating groove and the pressing groove. The pull groove is slidably connected to the drag rod 15. A hanging rod 18 is installed on one side of the inner wall of the operating groove. The cross-section of the hanging rod 18 is J-shaped. A rotating rod 19 is rotatably connected to one end of the drag rod 15 extending to the inside of the operating groove. A pull ring 20 is rotatably connected to the outside of the rotating rod 19. The pull ring 20 is made of rubber. Furthermore, when it is necessary to replace the bushing body 1 or maintain the rotating shaft 2, the pull ring 20 can be removed from the hanging rod 18, and then the drag rod 15 at the lower end of the rotating rod 19 can be grasped. The lever 12 is twisted, causing the baffle 13 to rotate and its end to be pulled out of the recess of the snap-fit ​​groove, separating it from the magnet 17. As it avoids the first rubber pad 6, it rebounds a short distance, but the snap-fit ​​groove still abuts against the baffle 13. At this time, the baffle 13 is tilted inside the snap-fit ​​groove, while the second rubber pad 21 is in a retracted state. Then, the drag bar 15 slides inside the pull groove, causing the guide plate 11 to drive the tilted baffle 13 to move laterally away from the inside of the snap-fit ​​groove. At this time, the first rubber pad 6 and the second spring drive the push plate 4 to rebound and reset, pulling out the top plate 7 together. At this time, the bushing body 1 and the rotating shaft 2 can be pulled out and separated for maintenance personnel.

[0029] The implementation principle of a bushing with an anti-detachment mechanism in this application embodiment is as follows: The operator can insert the rotating shaft 2 into the bushing body 1, causing the positioning seat 3 to slide into the positioning groove, achieving initial positioning and assembly. Then, pressing the pressing groove drives the pushing plate 4, and the sliding block 5 also slides inside the sliding groove, squeezing the second spring to retract, causing the first rubber pad 6 to adhere to the outer wall of the positioning seat 3, allowing the top plate 7 to slide into the top groove. With continuous pressure, the first rubber pad 6 is compressed, and after the top plate 7 contacts the guide plate 11, it forces... This causes the anti-detachment block 9 to slide inside the anti-detachment groove, squeezing and retracting the first spring 10. As the top plate 7 continues to press down, it will abut against the baffle 13, forcing the operating lever 12 and the torsion spring 14 to retract to the inside of the actuating groove. Once the locking groove is close to the actuating groove, the baffle 13, which is no longer blocked, is popped out by the torsion spring 14 to the inside of the locking groove. At this time, the push plate 4 can be released to allow the first rubber pad 6 to move back a certain distance and drive the top plate 7 to move back, so that the baffle 13 abuts against the recessed part of the inner wall of the locking groove, and the magnet 17 is attracted to its end. After positioning the bushing body 1 and the rotating shaft 2, the pull ring 20 can be pulled according to its rubber properties and hooked onto the hanging rod 18 for positioning to prevent the parts from loosening. When it is necessary to replace the bushing body 1 or maintain the rotating shaft 2, the pull ring 20 can be removed from the hanging rod 18. Then, the drag bar 15 at the lower end of the rotating rod 19 can be held and twisted, so that the operating rod 12 drives the baffle 13 to rotate, allowing its end to be pulled out from the recess of the snap-fit ​​groove and separated from the magnetic block 17. As the first avoidance is achieved, Rubber pad 6 rebounds a short distance, but the locking groove still abuts against baffle 13. At this time, baffle 13 is tilted inside the locking groove, while the second rubber pad 21 is in a retracted state. Then, the drag bar 15 slides inside the pull groove, causing the guide plate 11 to drive the tilted baffle 13 to move away from the inside of the locking groove laterally. At this time, the first rubber pad 6 and the second spring drive the push plate 4 to rebound and reset, pulling out the top plate 7 together. At this time, the bushing body 1 and the rotating shaft 2 can be pulled out and separated for maintenance personnel to carry out inspection and maintenance.

[0030] 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 bushing with an anti-detachment mechanism, comprising a bushing body (1), characterized in that: The inner side of the bushing body (1) is slidably connected to a rotating shaft (2). A positioning seat (3) is installed at one end of the outer wall of the rotating shaft (2). A positioning groove extending to the inner side of the bushing body (1) is opened at one end of the outer wall of the bushing body (1). The positioning seat (3) and the positioning groove are slidably connected. The rotating shaft (2) is engaged with the bushing body (1) through a locking mechanism. The locking mechanism includes a pushing component, a spring lock component, and a separating component. The pushing component is used to engage with the spring lock component. The separating component is used to unlock the lock between the bushing body (1) and the rotating shaft (2).

2. A bushing with an anti-detachment mechanism according to claim 1, characterized in that: The pushing assembly includes a pushing groove located inside the bushing body (1) on one side of the positioning groove. A pushing plate (4) is slidably connected to the inner side of the pushing groove. Sliding grooves are provided on both sides of the pushing groove inside the bushing body (1). Sliding blocks (5) are installed at both ends of the outer wall of the pushing plate (4). The sliding blocks (5) are slidably connected to the sliding groove. A second spring is installed between the sliding blocks (5) and the inner wall of the sliding groove.

3. A bushing with an anti-detachment mechanism according to claim 2, characterized in that: A first rubber pad (6) is installed on one side of the push plate (4), and a through hole is opened at one end of the first rubber pad (6). A top plate (7) is installed on one side of the outer wall of the push plate (4) at the through hole, and a pressing groove is opened on the other side of the outer wall of the push plate (4).

4. A bushing with an anti-detachment mechanism according to claim 3, characterized in that: The spring lock assembly includes a top groove formed on one side of the outer wall of the positioning seat (3). The top groove is slidably connected to the top plate (7). A pressing groove is formed inside the positioning seat (3) on one side of the top groove. A restraint seat (8) is installed on one side of the inner wall of the pressing groove. An anti-detachment groove is formed inside the restraint seat (8). An anti-detachment block (9) is slidably connected to the inner side of the anti-detachment groove. A first spring (10) is installed between one side of the anti-detachment block (9) and the inner wall of the anti-detachment groove.

5. A bushing with an anti-detachment mechanism according to claim 4, characterized in that: A guide plate (11) is embedded in one side of the anti-detachment block (9), and a slope (16) corresponding to the surface of the guide plate (11) is opened on one side of the top plate (7). A toggle groove is opened on one side of the guide plate (11), and an operating rod (12) is rotatably connected to the inside of the toggle groove. A second rubber pad (21) is embedded in one end of the inner wall of the toggle groove. A baffle (13) is fixedly sleeved on the outside of the operating rod (12), and a torsion spring (14) is installed between one end of the operating rod (12) and the inner wall of the toggle groove.

6. A bushing with an anti-detachment mechanism according to claim 5, characterized in that: A snap-fit ​​groove is provided on one side of the outer wall of the top plate (7) at its slope (16). The cross-section of the snap-fit ​​groove and the baffle (13) is L-shaped. The baffle (13) is made of iron. A magnetic block (17) that is attracted to the baffle (13) is embedded on one side of the inner wall of the snap-fit ​​groove.

7. A bushing with an anti-detachment mechanism according to claim 6, characterized in that: The operating lever (12) extends to the outer side of the guide plate (11) and is equipped with a drag rod (15). The top of the positioning seat (3) is provided with an operating groove. The positioning seat (3) is provided with a pull groove between the operating groove and the pressing groove. The pull groove is slidably connected to the drag rod (15). A hanging rod (18) is installed on one side of the inner wall of the operating groove. The cross section of the hanging rod (18) is J-shaped. The end of the drag rod (15) extending to the inner side of the operating groove is rotatably connected to a rotating rod (19). The outer side of the rotating rod (19) is rotatably connected to a pull ring (20). The pull ring (20) is made of rubber.

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