Transmission chain link dismounting tool

Abstract

The utility model relates to a transmission chain link disassembling tool which comprises a fixing frame and a sliding groove, a transverse rod is arranged in the sliding groove, two sliding blocks are arranged in the sliding groove and distributed in the length direction of the transverse rod, a driving mechanism is arranged at the bottom of the fixing frame, the top of each sliding block is fixedly connected with a movable rod, and a spring rod is fixedly connected to the inner side wall of each movable rod. A limiting groove is formed in the top of the movable rod, a limiting block is arranged above the contact rod, a movable block is arranged in the limiting groove, transverse plates are hinged to the front side wall and the rear side wall of the movable block, a threaded rod is rotationally arranged at the bottom of the limiting groove, and a positioning groove is formed in the lower end face of the limiting block. The device has the advantages that the chain links to be detached can be in a loose state, a worker can conveniently detach the chain links needing to be maintained, the worker can conveniently insert the movable rod into a gap between the two chain links for limiting, and then the device can conveniently drive the chain links at the position of the movable rod to be close to each other.

Description

Technical Field

[0001] This utility model relates to the field of chain link disassembly technology, specifically to a disassembly tool for transmission chain links. Background Technology

[0002] Chain drives are a primary transmission method in various workshop machines. They are reliable, efficient, and suitable for humid and dusty working environments. After prolonged use, chains will experience wear and tear, requiring disassembly and repair of some chain links. When the chain is mounted on the sprocket, it is in a taut state. To disassemble a particular link, it is necessary to manually pull the other chain links connected to the two ends of the link to be disassembled, causing the connected links to move closer together and loosen the link to be disassembled. However, manually pulling requires a lot of force and may result in hand injuries.

[0003] To address these technical issues, existing technology CN222307268U provides a disassembly tool for transmission chain links. By inserting two rectangular levers into the gaps between other chain links on both sides of the link to be disassembled, and then through the cooperation of a threaded rod, a moving block, a support rod, and a slider, the chain links at the rectangular levers can be moved closer to each other, thereby slackening the link to be disassembled, facilitating the disassembly of the chain link that needs maintenance. The operation is simple, time-saving, and labor-saving, and it can effectively protect the hands of maintenance personnel.

[0004] However, certain technical problems may arise during its use. For example, when using the device, the operator needs to manually control the limiting rod to slide within the slot, thereby retracting the limiting block into the rectangular lever. After the two rectangular levers on the two sliders are inserted into the gaps of the two chain links, the limiting block is pushed out from the rectangular levers. This positions the chain link to be repaired between the two rectangular levers and limits its movement, allowing the device to drive the chain links at the rectangular levers to move closer together. This loosens the chain link to be disassembled, making it easier to disassemble. However, this requires the operator to insert their hand into the chain drive area to adjust the limiting rod. Since the chain link gaps are usually taut, if the chain slips due to vibration or improper operation, or if the lever positioning is off, causing the limiting block to pop out unexpectedly, it can easily cause hand injuries such as pinching, scratching, or crushing, posing a safety hazard and making it inconvenient for the operator to use the device. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a chain link disassembly fixture that not only allows the chain links to be disassembled to be in a relaxed state, facilitating the disassembly of the chain links requiring maintenance by the workers, but also makes it convenient for the workers to insert a moving rod into the gap between two chain links for limiting, thereby facilitating the device to drive the chain links at the moving rod to move closer to each other.

[0006] This utility model is achieved through the following technical solution: a disassembly fixture for a transmission chain link is provided, including a fixed frame and a sliding groove formed on the top of the fixed frame. A crossbar is provided in the sliding groove, and two sliders are sleeved on the crossbar in the sliding groove. The two sliders are distributed along the length direction of the crossbar. A driving mechanism for moving the two sliders towards each other is provided at the bottom of the fixed frame. A moving rod is fixedly connected to the top of the sliders, and a spring rod is fixedly connected to the inner side wall of the moving rod. A contact rod is fixedly connected to the end of the spring rod away from the moving rod. A [missing information - likely a design feature] is formed on the top of the moving rod. A limiting groove is provided, and a limiting block is provided above the contact rod to abut against the top of the moving rod. A movable block is provided in the limiting groove. The left and right side walls of the movable block are fitted to the left and right inner side walls of the limiting groove. The front and rear side walls of the movable block are hinged to a horizontal plate that is fixed to the outer side wall of the limiting block. The bottom of the horizontal plate is flush with the bottom of the limiting block. A threaded rod is rotatably provided at the bottom of the limiting groove. The threaded rod extends vertically upward and passes through the movable block. A positioning groove is provided on the lower end face of the limiting block, and the upper end of the contact rod is located in the positioning groove.

[0007] In use, this utility model includes a fixed frame and a sliding groove on the top of the fixed frame. A crossbar is installed in the sliding groove, and two sliders are fitted onto the crossbar within the groove. The two sliders are distributed along the length of the crossbar. A driving mechanism is installed at the bottom of the fixed frame to move the two sliders towards each other. A moving rod is fixed to the top of each slider, and a spring rod is fixed to the inner wall of the moving rod. A contact rod is fixed to the end of the spring rod away from the moving rod. A limit groove is provided at the top of the moving rod. A limit block is provided above the contact rod, abutting against the top of the moving rod. A movable block is provided in the limit groove, with its left and right side walls fitting against the left and right inner side walls of the limit groove. A horizontal plate is hinged to the front and rear side walls of the movable block and fixed to the outer wall of the limit block. The bottom of the horizontal plate is connected to the bottom of the limit block. Alignment, a threaded rod is rotatably installed at the bottom of the limiting groove. The threaded rod extends vertically upward and passes through the movable block. A positioning groove is opened on the lower end face of the limiting block, and the upper end of the contact rod is located in the positioning groove. When the device is in use, the threaded rod needs to be controlled to rotate forward in the limiting groove and the movable block. At this time, because the left and right side walls of the movable block are in contact with the left and right inner side walls of the limiting groove, the movable block will not rotate with the threaded rod in the limiting groove. Instead, it will move downward in the limiting groove under the rotation drive of the threaded rod, so that the horizontal plate moves downward with the movable block. Under the push of the moving rod, the horizontal plate rotates upward on the movable block, and the end of the limiting block away from the movable block also rotates upward with the horizontal plate, causing the limiting block to disengage from the top of the moving rod. The limiting block is moved from a horizontal to a vertical position, and then moves downwards with the movable block into the limiting groove. The limiting block is then retracted. Next, the moving rods on the two sliders are inserted into the gaps between the two chain links, positioning the chain link requiring repair between the two moving rods. Then, the threaded rod is controlled to rotate in opposite directions within the limiting groove and the movable block. Because the left and right side walls of the movable block are in contact with the left and right inner side walls of the limiting groove, the movable block will not rotate with the threaded rod within the limiting groove. Instead, it will move upwards within the limiting groove to its initial position under the rotational drive of the threaded rod. This causes the horizontal plate and the limiting block to move upwards with the movable block, and the horizontal plate to re-abut against the top of the moving rod, thus preparing for disassembly. The two ends of the chain are limited, and then the drive mechanism moves the two sliders towards each other on the crossbar, bringing them closer together. This causes the moving rods on top of the two sliders to move closer together, which in turn moves the chain links at the moving rods closer together. This loosens the chain link to be disassembled, making it easier to remove the link that needs repair. As the moving rod moves the chain link closer together, the contact rod first contacts the chain link. At this time, the spring rod is compressed, and the contact rod moves towards the moving rod and abuts against the inner wall of the positioning groove, thus preventing the limit block from rotating. This not only loosens the chain link to be disassembled, making it easier for workers to remove the link that needs repair, but also makes it convenient for workers to insert the moving rod into the gap between the two chain links for limiting.This facilitates the movement of the chain links at the moving rod, bringing them closer together.

[0008] Preferably, a slot is formed on the inner wall of the positioning groove between the contact rod and the moving rod, and a locking block adapted to the slot is fixed to the outer wall of the contact rod. By forming a slot on the inner wall of the positioning groove between the contact rod and the moving rod, and fixing a locking block adapted to the slot to the outer wall of the contact rod, the locking block moves towards the moving rod along with the contact rod and enters the slot on the inner wall of the positioning groove during use. This prevents the limiting block from rotating during use and improves the stability of the limiting block during use.

[0009] Preferably, the driving mechanism includes a lead screw rotatably mounted on the bottom of the fixed frame via a bracket assembly. A movable block is sleeved on the lead screw, and support rods are hinged to the left and right side walls of the movable block and rotatably connected to the bottom of the slider. In use, by controlling the lead screw to rotate forward or backward on the bracket assembly, the movable block will not rotate with the lead screw, but will move upward or downward under the rotation of the lead screw. This causes one end of the support rod to rotate downward or upward on the movable block, and the other end of the support rod to rotate at the bottom of the slider, thereby pushing the slider to move on the crossbar, causing the two sliders to move closer or further apart.

[0010] Preferably, a connecting block is fixedly connected to the bottom of the lead screw, and a socket is provided on the connecting block. A force-saving rod is slidably inserted into the socket. By fixing a connecting block to the bottom of the lead screw, providing a socket, and slidably inserting a force-saving rod into the socket, the force-saving rod and the connecting block facilitate the rotation of the lead screw by the operator.

[0011] Preferably, two support plates are fixedly connected to the top of the movable rod, and the limiting block is located between the two support plates, with its front and rear side walls abutting against the front and rear support plates respectively. By fixing two support plates to the top of the movable rod, and positioning the limiting block between the two support plates with its front and rear side walls abutting against the front and rear support plates respectively, the stability of the limiting block during use can be improved.

[0012] Preferably, a hexagonal screw is coaxially fixed to the top of the threaded rod. By coaxially fixing the hexagonal screw to the top of the threaded rod, it is convenient for the operator to control the rotation of the hexagonal screw with an Allen wrench, thereby driving the threaded rod to rotate within the limiting groove and the movable block.

[0013] Preferably, two limiting plates are fixedly connected to the top of the fixed frame, and the sliding groove is located between the two limiting plates. By fixing two limiting plates to the top of the fixed frame and positioning the sliding groove between the two limiting plates, it is convenient for workers to place the chain on the top of the fixed frame, thereby facilitating the insertion of the moving rods on the two sliders into the gaps of the two chain links.

[0014] The beneficial effects of this utility model are as follows: It includes a fixed frame and a sliding groove on the top of the fixed frame. A crossbar is installed in the sliding groove, and two sliders are sleeved on the crossbar and distributed along the length of the crossbar. A driving mechanism for moving the two sliders towards each other is installed at the bottom of the fixed frame. A moving rod is fixedly connected to the top of the sliders, and a spring rod is fixedly connected to the inner wall of the moving rod. A contact rod is fixedly connected to the end of the spring rod away from the moving rod. A limit groove is opened at the top of the moving rod, and a limit block is installed above the contact rod, abutting against the top of the moving rod. A movable block is installed in the limit groove, and the left and right side walls of the movable block are fitted against the left and right inner side walls of the limit groove. A horizontal plate is hinged to the front and rear side walls of the movable block and fixed to the outer wall of the limit block. The bottom of the horizontal plate is connected to the bottom of the limit block. Alignment, a threaded rod is rotatably installed at the bottom of the limiting groove. The threaded rod extends vertically upward and passes through the movable block. A positioning groove is opened on the lower end face of the limiting block, and the upper end of the contact rod is located in the positioning groove. When the device is in use, the threaded rod needs to be controlled to rotate forward in the limiting groove and the movable block. At this time, because the left and right side walls of the movable block are in contact with the left and right inner side walls of the limiting groove, the movable block will not rotate with the threaded rod in the limiting groove. Instead, it will move downward in the limiting groove under the rotation drive of the threaded rod, so that the horizontal plate moves downward with the movable block. Under the push of the moving rod, the horizontal plate rotates upward on the movable block, and the end of the limiting block away from the movable block also rotates upward with the horizontal plate, causing the limiting block to disengage from the top of the moving rod. The limiting block is moved from a horizontal to a vertical position, and then moves downwards with the movable block into the limiting groove. The limiting block is then retracted. Next, the moving rods on the two sliders are inserted into the gaps between the two chain links, positioning the chain link requiring repair between the two moving rods. Then, the threaded rod is controlled to rotate in opposite directions within the limiting groove and the movable block. Because the left and right side walls of the movable block are in contact with the left and right inner side walls of the limiting groove, the movable block will not rotate with the threaded rod within the limiting groove. Instead, it will move upwards within the limiting groove to its initial position under the rotational drive of the threaded rod. This causes the horizontal plate and the limiting block to move upwards with the movable block, and the horizontal plate to re-abut against the top of the moving rod, thus preparing for disassembly. The two ends of the chain are limited, and then the drive mechanism moves the two sliders towards each other on the crossbar, bringing them closer together. This causes the moving rods on top of the two sliders to move closer together, which in turn moves the chain links at the moving rods closer together. This loosens the chain link to be disassembled, making it easier to remove the link that needs repair. As the moving rod moves the chain link closer together, the contact rod first contacts the chain link. At this time, the spring rod is compressed, and the contact rod moves towards the moving rod and abuts against the inner wall of the positioning groove, thus preventing the limit block from rotating. This not only loosens the chain link to be disassembled, making it easier for workers to remove the link that needs repair, but also makes it convenient for workers to insert the moving rod into the gap between the two chain links for limiting.This facilitates the movement of the chain links at the moving rod, bringing them closer together. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of part A in the middle;

[0017] Figure 3 This is a perspective view of the structure of this utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of Part B in the middle section;

[0019] Figure 5 for Figure 4 Schematic diagram of the structure of part C;

[0020] Figure 6 This is a top view of the structure of this utility model;

[0021] Figure 7 for Figure 6 Schematic diagram of the structure of part D in the middle;

[0022] Figure 8 for Figure 7 Schematic diagram of the structure of part E in the middle;

[0023] As shown in the figure:

[0024] 1. Fixed frame, 2. Support assembly, 3. Lead screw, 4. Limiting plate, 5. Support plate, 6. Moving rod, 7. Limiting block, 8. Locking block, 9. Connecting block, 10. Moving block, 11. Support rod, 12. Labor-saving rod, 13. Crossbar, 14. Slider, 15. Hex screw, 16. Spring rod, 17. Contact rod, 18. Slide groove, 19. Horizontal plate, 20. Threaded rod, 21. Limiting groove, 22. Movable block, 23. Positioning groove, 24. Locking groove. Detailed Implementation

[0025] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] like Figures 1-8The transmission chain link disassembly fixture of this utility model includes a fixed frame 1 and a slide groove 18 formed on the top of the fixed frame 1. A crossbar 13 is provided in the slide groove 18, and two sliders 14 are sleeved on the crossbar 13 in the slide groove 18. The two sliders 14 are distributed along the length direction of the crossbar 13. A driving mechanism for moving the two sliders 14 towards each other is provided at the bottom of the fixed frame 1. A moving rod 6 is fixedly connected to the top of the sliders 14. A spring rod 16 is fixedly connected to the inner side wall of the moving rod 6. A contact rod 17 is fixedly connected to the end of the spring rod 16 away from the moving rod 6. A limit groove 21 is formed on the top of the moving rod 6. A limiting block 7 is provided above the contact rod 17, which abuts against the top of the moving rod 6. A movable block 22 is provided in the limiting groove 21. The left and right side walls of the movable block 22 are fitted to the left and right inner side walls of the limiting groove 21. The front and rear side walls of the movable block 22 are hinged to a horizontal plate 19 which is fixed to the outer side wall of the limiting block 7. The bottom of the horizontal plate 19 is flush with the bottom of the limiting block 7. A threaded rod 20 is rotatably provided at the bottom of the limiting groove 21. The threaded rod 20 extends vertically upward and passes through the movable block 22. A positioning groove 23 is provided on the lower end face of the limiting block 7. The upper end of the contact rod 17 is located in the positioning groove 23.

[0027] By providing a slot 24 on the inner wall of the positioning groove 23 between the contact rod 17 and the moving rod 6, and fixing a locking block 8 on the outer wall of the contact rod 17 that is compatible with the slot 24, the locking block 8 will move towards the moving rod 6 along with the contact rod 17 and enter the slot 24 on the inner wall of the positioning groove 23 during use, thereby preventing the limiting block 7 from rotating during use and improving the stability of the limiting block 7 during use. The driving mechanism includes a lead screw 3 rotatably mounted on the bottom of the fixed frame 1 via a bracket assembly 2. A movable block 10 is sleeved on the lead screw 3. Support rods 11, which are rotatably connected to the bottom of the slider 14, are hinged to the left and right side walls of the movable block 10. During use, by controlling the lead screw 3 to rotate forward or backward on the bracket assembly 2, the movable block 10 will not rotate with the lead screw 3. Instead, it will move upward or downward under the rotation of the lead screw 3. This causes one end of the support rod 11 to rotate downward or upward on the movable block 10, and the other end of the support rod 11 to rotate at the bottom of the slider 14, thereby pushing the slider 14 to move on the crossbar 13, causing the two sliders 14 to move closer or further apart. A connecting block 9 is fixed to the bottom of the lead screw 3. The connecting block 9 has an insertion hole, into which a force-saving rod 12 is slidably inserted. The force-saving rod 12 and the connecting block 9 facilitate the rotation of the lead screw 3 by the operator. Two support plates 5 are fixedly attached to the top of the moving rod 6, and a limiting block 7 is located between the two support plates 5. The front and rear side walls of the limiting block 7 abut against the front and rear support plates 5 respectively. The support plates 5 improve the stability of the limiting block 7 during use. A hexagonal screw 15 is coaxially fixed to the top of the threaded rod 20, which allows the operator to control the rotation of the hexagonal screw 15 with an Allen wrench, driving the threaded rod 20 to rotate within the limiting groove 21 and the movable block 22. Two limiting plates 4 are fixedly attached to the top of the fixed frame 1, and the slide groove 18 is located between the two limiting plates 4. This allows the operator to place a chain on the top of the fixed frame 1, facilitating the insertion of the moving rods 6 on the two sliders 14 into the gaps of the two chain links. By setting the horizontal plate 19 as a magnetic plate, the stability of the horizontal plate 19 during use is improved. The magnetic plate's attraction and fixation to the movable block 22 prevents the horizontal plate 19 from rotating on the movable block 22 when changing from horizontal to vertical.

[0028] Combined with appendix Figure 1-8The method of using this utility model is as follows: First, the operator needs to use an Allen wrench to control the hex screw 15 to rotate forward, causing the threaded rod 20 to rotate forward within the limiting groove 21 and the movable block 22. At this time, because the left and right side walls of the movable block 22 are in contact with the left and right inner side walls of the limiting groove 21, the movable block 22 will not rotate with the threaded rod 20 within the limiting groove 21. Instead, it will move downward within the limiting groove 21 under the rotational drive of the threaded rod 20, thereby causing the horizontal plate 19 to move downward along with the movable block 22, and the moving rod... Driven by 6, the horizontal plate 19 rotates upward on the movable block 22, and the end of the limiting block 7 away from the movable block 22 also rotates upward with the horizontal plate 19, causing the limiting block 7 to disengage from the top of the moving rod 6. This changes the limiting block 7 from horizontal to vertical, and it moves downward with the movable block 22 into the limiting groove 21. The limiting block 7 is then retracted. Next, the chain is placed between the two limiting plates 4 at the top of the fixed frame 1, and the moving rods 6 on the two sliders 14 are inserted into the gaps of the two chain links, so that the chain link to be repaired is located in the middle of the two moving rods 6. Then, the hex screw 15 is rotated in the opposite direction by controlling the Allen wrench, which drives the threaded rod 20 in the limiting groove 21 and the movable block. The movable block 22 rotates in the reverse direction. Because the left and right side walls of the movable block 22 are in contact with the left and right inner side walls of the limiting groove 21, the movable block 22 will not rotate with the threaded rod 20 within the limiting groove 21. Instead, driven by the rotation of the threaded rod 20, it will move upwards within the limiting groove 21 back to its initial position. This causes the horizontal plate 19 and the limiting block 7 to move upwards with the movable block 22, returning it to its initial position. Then, by having the operator rotate the horizontal plate 19, the horizontal plate 19 and the limiting block 7 will re-abut against the top of the moving rod 6, thus limiting the two ends of the chain to be disassembled. Then, the effort-saving rod 12 and the connecting block 9 control the screw 3 to rotate forward on the bracket assembly 2. At this time, because the left and right sides of the movable block 10... Support rods 11 are hinged to the side walls and rotatably connected to the bottom of the slider 14. Therefore, the moving block 10 does not rotate with the lead screw 3, but moves downwards driven by the rotation of the lead screw 3. This causes one end of the support rod 11 to rotate upwards on the moving block 10, and the other end of the support rod 11 to rotate at the bottom of the slider 14. This causes the two sliders 14 to move towards each other on the crossbar 13, bringing them closer together. This also causes the moving rods 6 on the top of the two sliders 14 to move closer together, thus bringing the chain links at the moving rods 6 closer together. This loosens the chain links to be disassembled, facilitating disassembly of the links requiring maintenance. During the process of the moving rods 6 bringing the chain links closer together, the contact rod 17 will first contact the chain links, at which point the spring rod 16 is compressed.The contact rod 17 moves towards the moving rod 6, causing the locking block 8 to move along with the contact rod 17 towards the moving rod 6 and into the locking groove 24 on the inner wall of the positioning groove 23, thereby preventing the limiting block 7 from rotating during use.

[0029] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A drive chain link disassembly tool, characterized by: The system includes a fixed frame (1) and a slide groove (18) on the top of the fixed frame. A crossbar (13) is provided in the slide groove, and two sliders (14) are sleeved on the crossbar in the slide groove. The two sliders are distributed along the length of the crossbar. A driving mechanism for moving the two sliders toward each other is provided at the bottom of the fixed frame. A moving rod (6) is fixedly connected to the top of the sliders. A spring rod (16) is fixedly connected to the inner side wall of the moving rod. A contact rod (17) is fixedly connected to the end of the spring rod away from the moving rod. A limit groove (21) is provided at the top of the moving rod. A limiting block (7) is provided at the top position to abut against the top of the moving rod. A movable block (22) is provided in the limiting groove. The left and right side walls of the movable block are fitted to the left and right inner side walls of the limiting groove. The front and rear side walls of the movable block are hinged to a horizontal plate (19) that is fixed to the outer side wall of the limiting block. The bottom of the horizontal plate is flush with the bottom of the limiting block. A threaded rod (20) is rotatably provided at the bottom of the limiting groove. The threaded rod extends vertically upward and passes through the movable block. A positioning groove (23) is provided on the lower end face of the limiting block. The upper end of the contact rod is located in the positioning groove.

2. The power transmission chain link disassembly tool of claim 1, wherein: A slot (24) is provided on the inner side wall of the positioning groove between the contact rod and the moving rod, and a locking block (8) adapted to the slot is fixed on the outer side wall of the contact rod.

3. The power transmission chain link disassembly tool of claim 1, wherein: The driving mechanism includes a lead screw (3) rotatably mounted on the bottom of the fixed frame via a bracket assembly (2), a movable block (10) is sleeved on the lead screw, and support rods (11) are hinged to the left and right side walls of the movable block and rotatably connected to the bottom of the slider.

4. The power transmission chain link disassembly tool of claim 3, wherein: A connecting block (9) is fixedly connected to the bottom of the lead screw. An insertion hole is provided on the connecting block, and a force-saving rod (12) is slidably inserted into the insertion hole.

5. The power chain link removal tool of claim 4, wherein: Two support plates (5) are fixed to the top of the movable rod. The limiting block is located between the two support plates, and the front and rear side walls of the limiting block abut against the front and rear support plates respectively.

6. The power chain link removal tool of claim 4, wherein: A hexagonal screw (15) is coaxially fixed to the top of the threaded rod.

7. The power chain link removal tool of claim 4, wherein: The top of the fixed frame is fixed with two limiting plates (4), and the sliding groove is located between the two limiting plates.

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