Belt pulley dismounting tool
By designing the pulley disassembly tooling, using symmetrical semicircle plates and bolt connections, and combining with the three-claw plucker, the problem of damage during the pulley disassembly is solved, achieving a safe and efficient disassembly effect.
Patent Information
- Application Number
- CN202422123985.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In the prior art, the pulley is easily damaged when disassembled, especially when using a three-claw pulley, there is a risk of damage to cast iron with insufficient pulley material.
A pulley disassembly tool is designed, including two first semicircular plates arranged symmetrically, with straight sides overlapping, and a semicircular through groove is opened in the middle position. The connecting plate is fastened by bolts and used with a three-claw wheel plucker to avoid direct contact with the pulley.
It realizes that while removing the pulley, it avoids damage to the pulley by the three-claw plucker, improving the removal efficiency and safety.
Smart Images
Figure CN223160863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of disassembly equipment, in particular to a pulley disassembly tooling. Background Art
[0002] In the prior art, pulleys are often used for transmission. In order to ensure the stability of the pulley during transmission, the pulley often needs to be fixed on the mandrel by key connection and interference fit. Although this method is stable, if the pulley is damaged and needs to be replaced, it will increase the disassembly difficulty for the staff.
[0003] Generally, if the staff wants to disassemble the pulley from the mandrel, there are usually two methods. One is to continuously strike the pulley with an iron rod to make it loose and no longer fixed on the mandrel. The other is to directly use a three-jaw pulley puller, fix the pulling feet of the three-jaw pulley puller directly on the hub of the pulley, and then try to separate the pulley from the mandrel by rotating the ejector rod.
[0004] During the operation of disassembling the pulley, both of the above two methods potentially have the risk of applying excessive local pressure to the pulley. Given that the pulley is mostly made of cast iron with insufficient toughness, this pressure concentration phenomenon is extremely likely to cause damage to the pulley during disassembly. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides a pulley disassembly tooling that can facilitate the staff to disassemble the pulley while avoiding damage to the pulley caused by the three-jaw pulley puller.
[0006] The utility model is realized by the following technical solutions: a pulley disassembly tooling is provided, which includes two symmetrically arranged first semi-circular plates. The straight edges of the two first semi-circular plates coincide. A first semi-circular through groove is opened at the middle position of the straight edge of the first semi-circular plate. A connecting plate is fixedly connected to the rear side wall of the first semi-circular plate. The two connecting plates are fastened by bolts.
[0007] During the use of the utility model, by arranging two symmetric first semi-circular plates, the straight edges of the two first semi-circular plates coincide. A first semi-circular through groove is provided at the middle position of the straight edge of the first semi-circular plate, and a connecting plate is fixedly connected to the rear side wall of the first semi-circular plate. The two connecting plates are fastened by bolts. When the device is in use, the bolts need to be screwed out from the connecting plates first, and the two first semi-circular plates are controlled to move towards each other so that the straight edges of the two first semi-circular plates no longer coincide. Then, the two first semi-circular plates are sleeved on the core shaft of the pulley, so that the core shaft abuts against the first semi-circular through groove, and the front side wall of the first semi-circular plate abuts against the inner side wall of the pulley. The straight edges of the two first semi-circular plates coincide again. Then, the bolts are screwed back into the connecting plates to fix the two first semi-circular plates together again. Then, the hook of the three-jaw pulley puller is hooked on the inner side wall of the first semi-circular plate, and then the ejector rod on the three-jaw pulley puller is made to abut against the core shaft of the pulley, and the ejector rod on the three-jaw pulley puller is driven to rotate, so that the three-jaw pulley puller drives the first semi-circular plate to move outwards, and further makes the first semi-circular plate push the pulley to move on the core shaft, so that the pulley is separated from the core shaft, and the pulley is disassembled from the core shaft. This can facilitate the staff to disassemble the pulley while avoiding damage to the pulley by the three-jaw pulley puller.
[0008] Preferably, two connecting plates are provided on the first semi-circular plate, and the two connecting plates are respectively located on the left and right sides of the first semi-circular through groove. By arranging two connecting plates on the first semi-circular plate and the two connecting plates are respectively located on the left and right sides of the first semi-circular through groove, the fixing effect between the two first semi-circular plates during the use of the device can be improved.
[0009] Preferably, a second semi-circular plate is further provided on the front side of the first semi-circular plate, the straight edges of the two second semi-circular plates coincide, a second semi-circular through groove is provided at the middle position of the straight edge of the second semi-circular plate, the horizontal distance between the first semi-circular plate and the second semi-circular plate forms a pulley fixing space, and the first semi-circular plate and the second semi-circular plate are fixedly connected by a connecting column. By further providing a second semi-circular plate on the front side of the first semi-circular plate, the straight edges of the two second semi-circular plates coincide, a second semi-circular through groove is provided at the middle position of the straight edge of the second semi-circular plate, the horizontal distance between the first semi-circular plate and the second semi-circular plate forms a pulley fixing space, and the first semi-circular plate and the second semi-circular plate are fixedly connected by a connecting column. When the device is in use, by placing the pulley into the pulley fixing space and making the front side wall of the first semi-circular plate and the rear side wall of the second semi-circular plate respectively abut against the inner side wall and the outer side wall of the pulley, it can assist in positioning the pulley when the pulley moves on the core shaft, and avoid the pulley from tilting when moving on the core shaft, resulting in the pulley being unable to be separated from the core shaft.
[0010] Preferably, the side wall of the connecting plate facing the straight side of the first semi-circular plate is flush with the straight side of the first semi-circular plate. By making the side wall of the connecting plate facing the straight side of the first semi-circular plate flush with the straight side of the first semi-circular plate, it is convenient for the staff to fix the two first semi-circular plates together.
[0011] Preferably, there are two connecting columns arranged on the first semi-circular plate, and the two connecting columns are located on the left and right sides of the first semi-circular through groove. By arranging two connecting columns on the first semi-circular plate and the two connecting columns are located on the left and right sides of the first semi-circular through groove, the connection effect between the first semi-circular plate and the second semi-circular plate during the use of the device can be improved.
[0012] The beneficial effects of the present utility model are as follows: By providing two symmetric first semi-circular plates, the straight sides of the two first semi-circular plates coincide. A first semi-circular through groove is opened at the middle position of the straight side of the first semi-circular plate, and a connecting plate is fixedly connected to the rear side wall of the first semi-circular plate. The two connecting plates are fastened by bolts. When the device is in use, the bolts need to be first screwed out from the connecting plates, and the two first semi-circular plates are controlled to move towards each other so that the straight sides of the two first semi-circular plates no longer coincide. Then, the two first semi-circular plates are sleeved on the core shaft of the pulley, so that the core shaft abuts against the first semi-circular through groove, and the front side wall of the first semi-circular plate abuts against the inner side wall of the pulley. The straight sides of the two first semi-circular plates coincide again. Then, the bolts are screwed back into the connecting plates to fix the two first semi-circular plates together again. Then, the hook of the three-jaw puller is hooked on the inner side wall of the first semi-circular plate, and then the ejector rod on the three-jaw puller is made to abut against the core shaft of the pulley, and the ejector rod on the three-jaw puller is driven to rotate, so that the three-jaw puller drives the first semi-circular plate to move outwards, and further the first semi-circular plate pushes the pulley to move on the core shaft, so that the pulley is separated from the core shaft, and the pulley is disassembled from the core shaft. In this way, it is convenient for the staff to disassemble the pulley while avoiding damage to the pulley by the three-jaw puller. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the present utility model;
[0014] Figure 2 is a right view of the structure of the present utility model;
[0015] Figure 3 is a left view of the structure of the present utility model;
[0016] Figure 4 is Figure 1 the sectional view taken along the line a-a in
[0017] Figure 5 is a diagram of the present utility model in the use state;
[0018] As shown in the figure:
[0019] 1. Second semi-circular plate, 2. Connecting column, 3. Pulley, 4. First semi-circular plate, 5. Bolt, 6. Connecting plate, 7. First semi-circular through groove, 8. Second semi-circular through groove, 9. Three-jaw pulley puller, 10. Mandrel. Specific implementation manner
[0020] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific implementation manners.
[0021] As Figures 1 - 5 shown, the pulley disassembly tool of the present utility model includes two symmetrically arranged first semi-circular plates 4. The straight edges of the two first semi-circular plates 4 coincide. A first semi-circular through groove 7 is opened at the middle position of the straight edge of the first semi-circular plate 4. A connecting plate 6 is fixedly connected to the rear side wall of the first semi-circular plate 4. The two connecting plates 6 are fastened by bolts 5.
[0022] By arranging two connecting plates 6 on the first semi-circular plate 4, and the two connecting plates 6 are respectively located on the left and right sides of the first semi-circular through groove 7, this can improve the fixing effect between the two first semi-circular plates 4 during the use of the device. By further arranging a second semi-circular plate 1 on the front side of the first semi-circular plate 4, and opening a second semi-circular through groove 8 at the middle position of the straight edge of the second semi-circular plate 1, and the horizontal distance between the first semi-circular plate 4 and the second semi-circular plate 1 forms a pulley fixing space. The first semi-circular plate 4 and the second semi-circular plate 1 are fixedly connected by a connecting column 2. When the device is in use, by placing the pulley 3 into the pulley fixing space, and making the front side wall of the first semi-circular plate 4 and the rear side wall of the second semi-circular plate 1 respectively abut against the inner side wall and the outer side wall of the pulley 3, it can assist in positioning the pulley 3 when the pulley 3 moves on the mandrel 10, and avoid the pulley 3 from tilting when moving on the mandrel 10, resulting in the pulley 3 being unable to be detached from the mandrel 10. By making the side wall of the connecting plate 6 facing the straight edge of the first semi-circular plate 4 flush with the straight edge of the first semi-circular plate 4, it is convenient for the staff to fix the two first semi-circular plates 4 together. By arranging two connecting columns 2 on the first semi-circular plate 4, and the two connecting columns 2 are located on the left and right sides of the first semi-circular through groove 7, it can improve the connection effect between the first semi-circular plate 4 and the second semi-circular plate 1 during the use of the device. The pulley disassembly tool further includes a three-jaw pulley puller 9. The three-jaw pulley puller 9 includes a screw rod seat and a jackscrew threadedly connected to the screw rod seat. Three connecting rods are hinged to the outer side wall of the screw rod seat. The three connecting rods are equidistantly distributed along the circumferential direction of the screw rod seat. A pull foot is hinged to the end of the connecting rod away from the screw rod seat. The jackscrew is located at the axis position of the screw rod seat.
[0023] Combined with the attached Figures 1 - 5It can be seen that the usage method of the present utility model is as follows: First, it is necessary to screw out the bolt 5 from the connecting plate 6, and control the two first semi-circular plates 4 to move towards each other, so that the straight edges of the two first semi-circular plates 4 no longer coincide. Place the pulley 3 into the pulley fixing space, so that the two first semi-circular plates 4 and the two second semi-circular plates 1 are sleeved on the core shaft 10 of the pulley 3, make the core shaft 10 abut against the first semi-circular through groove 7, and make the front side wall of the first semi-circular plate 4 and the rear side wall of the second semi-circular plate 1 abut against the inner side wall and the outer side wall of the pulley 3 respectively. The straight edges of the two first semi-circular plates 4 coincide again. Then, screw the bolt 5 back into the connecting plate 6 to fix the two first semi-circular plates 4 together again. Hook the pulling foot of the three-jaw pulley puller 9 to the inner side wall of the first semi-circular plate 4. Then, make the ejector rod on the three-jaw pulley puller 9 pass through the second semi-circular through groove 8 and press against the core shaft 10 of the pulley 3, and drive the ejector rod on the three-jaw pulley puller 9 to rotate in the screw rod seat, so that the three-jaw pulley puller 9 drives the first semi-circular plate 4 to move outwards, and also drives the second semi-circular plate 1 to move outwards via the connecting column 2, so that the first semi-circular plate 4 pushes the pulley 3 to move on the core shaft 10, causing the pulley 3 to be disengaged from the core shaft 10, and disassembling the pulley 3 from the core shaft 10.
[0024] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not limitations on the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also fall within the scope of the claims of the present utility model.
Claims
1. A pulley disassembly tooling, characterized in that: It includes two first semi-circular plates (4) which are symmetrically arranged. The straight edges of the two first semi-circular plates (4) coincide. A first semi-circular through groove (7) is formed at the middle position of the straight edge of the first semi-circular plate (4). A connecting plate (6) is fixedly connected to the rear side wall of the first semi-circular plate (4). The two connecting plates (6) are fastened by bolts (5).
2. The pulley disassembly tooling according to claim 1, characterized in that: There are two connecting plates (6) arranged on the first semi-circular plate (4). The two connecting plates (6) are respectively located on the left and right sides of the first semi-circular through groove (7).
3. The pulley disassembly tooling according to claim 1, characterized in that: A second semi-circular plate (1) is further arranged on the front side of the first semi-circular plate (4). The straight edges of the two second semi-circular plates (1) coincide. A second semi-circular through groove (8) is formed at the middle position of the straight edge of the second semi-circular plate (1). The lateral distance between the first semi-circular plate (4) and the second semi-circular plate (1) forms a pulley fixing space. The first semi-circular plate (4) and the second semi-circular plate (1) are fixedly connected by connecting columns (2).
4. The pulley disassembly tooling according to claim 1, wherein: The side wall of the connecting plate (6) facing the straight edge of the first semi-circular plate (4) is flush with the straight edge of the first semi-circular plate (4).
5. The pulley disassembly tooling according to claim 3, wherein: There are two connecting columns (2) arranged on the first semi-circular plate (4). The two connecting columns (2) are located on the left and right sides of the first semi-circular through groove (7).