Bearing dismounting and mounting jacking device

Abstract

The utility model provides a bearing disassembly and assembly jacking device. The bearing disassembly and assembly jacking device comprises a driving cylinder, a transmission rod which is controlled by the driving cylinder and can move axially, an adapter piece connected with the end part of the transmission rod, and a jacking piece which can be detachably connected with the adapter piece, the adapter comprises a mounting base part and an adapter which is connected with the mounting base part and extends parallel to the transmission rod, and an adapter hole is formed in the axis part of the adapter; the top pressing piece comprises a first top pressing block and a second top pressing block, the first top pressing block is of a cylindrical structure, the outer diameter of the first top pressing block corresponds to the inner diameter of the adapter hole, a sleeving hole is formed in the middle of the second top pressing block, and the inner diameter of the sleeving hole corresponds to the outer diameter of the adapter. The bearing can be disassembled and assembled only by changing the installation direction of the jacking piece, operation is easy and convenient, manpower is saved, thrust applied in the bearing disassembling and assembling process is concentrated on the axis position, and the bearing is not prone to bearing acting force deviating from the axis.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing disassembly and assembly, and particularly relates to a bearing disassembly and assembly jacking device. Background Technique

[0002] When a roller is in use, bearings are usually installed at the ends, and then fixed to mechanical equipment through the bearings to achieve functions such as transmission, guiding, and pressing. Bearings play an important role during the operation of the roller. As the service time increases, the bearings will inevitably experience problems such as wear and corrosion. Therefore, it is necessary to regularly disassemble the bearings from the ends of the rollers for inspection or replacement.

[0003] In traditional methods, the disassembly and installation of bearings are carried out by knocking or some hand-held devices. The disassembly and installation processes are time-consuming and laborious, and it is easy to cause damage to the bearings. The patent document with the application number CN201820224972.2 discloses a rubber roller bearing disassembly and assembly device. When the device disassembles the bearing, a fixture is used to abut against the bearing from the inside, and then a jack is used to push out the shaft head at the end of the rubber roller from the bearing bore. When installing the bearing, the rubber roller is fixed by the fixture, and then the bearing is pressed by the jack and the pressure plate so that it is sleeved on the shaft head at the end of the rubber roller. The disassembly and installation of the above technical solution are both carried out by the jack to apply force, which can reduce the manpower requirement and improve the work efficiency. However, the force application methods of the jack during the disassembly and installation processes are different. During the installation process, it is impossible to apply a thrust to the pressure plate from the axis center part, resulting in an off-axis acting force on the bearing during the installation process, which may cause structural damage to the bearing. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a bearing disassembly and assembly jacking device, which can convert the working mode and apply force to the roller shaft head or the bearing from the axis center part, reducing the manpower requirement and the probability of bearing damage at the same time.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bearing disassembly and assembly jacking device includes a driving cylinder, an axially movable transmission rod controlled by the driving cylinder, an adapter connected to the end of the transmission rod, and a jacking member that can be detachably connected to the adapter; the adapter includes a mounting base and a swivel joint connected to the mounting base and extending parallel to the transmission rod, and a transfer hole is formed at the axis center part of the swivel joint; the jacking member includes a first jacking block and a second jacking block. The first jacking block has a cylindrical structure and the outer diameter of the first jacking block corresponds to the inner diameter of the transfer hole. A socket hole is formed in the middle of the second jacking block, and the inner diameter of the socket hole corresponds to the outer diameter of the swivel joint.

[0007] The working principle of the present utility model is as follows: When disassembling the bearing, the second pressing block is connected with the adapter through the socket hole, so that the first pressing block faces the direction of the roller. The outer diameter of the first pressing block is smaller than the shaft hole of the bearing, so that the first pressing block can pass through the middle of the bearing. After fixing the bearing, the driving cylinder is used to control the first pressing block to apply a thrust to the shaft head of the roller, and then the shaft head can be pushed out from the middle of the bearing to realize the disassembly of the bearing; When installing the bearing, the first pressing block is inserted into the adapter hole of the adapter, so that the second pressing block faces the direction of the roller. The aperture of the socket hole of the second pressing block is larger than the shaft head of the roller, so that the shaft head can extend into the socket hole. After fixing the roller, the driving cylinder is used to control the second pressing block to apply a thrust to the bearing, and then the bearing can be sleeved on the shaft head to realize the installation of the bearing. The present utility model can realize the disassembly and installation of the bearing only by changing the installation direction of the pressing member, with simple and convenient operation, labor saving, and the applied thrust concentrated on the axis, not easily causing the bearing to be affected by the off-axis force. In this application, "the outer diameter of the first pressing block corresponds to the inner diameter of the adapter hole" means that after the first pressing block is inserted into the adapter hole, the first pressing block can slide axially freely, and the outer wall of the first pressing block is basically in contact with the inner wall of the adapter hole. Similarly, "the inner diameter of the socket hole corresponds to the outer diameter of the adapter".

[0008] Furthermore, the adapter and the transmission rod are detachably connected.

[0009] Furthermore, the mounting base is provided with a screw hole, and the end of the transmission rod is provided with a threaded connection head corresponding to the screw hole.

[0010] Furthermore, the adapter further includes a magnetic member.

[0011] Furthermore, the magnetic member is an annular structure arranged around the adapter, and the magnetic member is fixedly connected with the mounting base.

[0012] The magnetic member can make the pressing member and the adapter form a magnetic connection, avoiding the detachment of the pressing member. At the same time, it also makes it easy to disassemble and change the direction of the pressing member from the adapter, facilitating the operation.

[0013] Furthermore, the outer side surface of the adapter, the inner wall surface of the adapter hole, the outer side surface of the first pressing block, and the inner wall surface of the socket hole are all smooth curved surfaces.

[0014] Furthermore, the outer side surface of the mounting base is provided with anti-slip patterns or bayonets that can cooperate with a wrench.

[0015] Furthermore, the length of the adapter is smaller than the depth of the socket hole.

[0016] Furthermore, the length of the first pressing block is greater than the depth of the adapter hole.

[0017] In the present utility model, the difference between the outer diameter of the first pressing block and the inner diameter of the second pressing block is approximately equal to the wall thickness of the adapter. Considering the actual structure of the bearing, if the inner diameter of the second pressing block exceeds the outer diameter of the first pressing block by too much, the second pressing block will only apply a thrust to the outer ring of the bearing during the process of pushing the bearing, which easily causes the bearing to be structurally deformed. Therefore, the above difference is usually limited to a small range, so that the second pressing block can apply thrusts to both the inner ring and the outer ring of the bearing at the same time. However, this will result in a relatively thin wall thickness of the adapter. If the wall of the adapter is stressed during the process of applying the thrust, it may be deformed. When the length of the adapter is less than the depth of the socket hole, the adapter is stressed by the mounting base during the process of disassembling the bearing. When the length of the first pressing block is greater than the depth of the adapter hole, the adapter is also stressed by the mounting base during the process of installing the bearing, thus ensuring that the adapter is not easily deformed.

[0018] In summary, the application of the solution of the present utility model can achieve the following beneficial effects:

[0019] 1. The present utility model can realize the disassembly and installation of the bearing only by changing the installation direction of the pressing member, with simple and convenient operation and labor saving.

[0020] 2. The thrust applied during the disassembly and installation of the bearing in the present utility model is concentrated at the axis center, and it is not easy to cause the bearing to be subjected to an off-axis acting force.

[0021] 3. In some embodiments, the present utility model also provides a magnetic attraction member, which can make the pressing member and the adapter form a magnetic attraction connection, avoiding the detachment of the pressing member, and at the same time making it easy to disassemble the pressing member from the adapter and change the direction, which is convenient for operation.

[0022] 4. In some embodiments, the present utility model is designed such that the adapter is stressed by the mounting base rather than the adapter head through structural design, avoiding the deformation of the adapter with a relatively thin wall thickness, and improving the service life and the force application threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the bearing disassembly and installation pressing device in the embodiment;

[0024] Figure 2 It is Figure 1 The schematic structural diagram after the split of the transmission rod, the adapter and the pressing head in

[0025] Figure 3 It is a schematic structural diagram of the cooperation between the adapter and the pressing head during bearing disassembly;

[0026] Figure 4 It is a schematic structural diagram of the cooperation between the adapter and the pressing head during bearing installation;

[0027] Figure 5Schematic structural diagram of the adapter in another embodiment;

[0028] In the figure, 1 is the driving cylinder, 2 is the transmission rod, 21 is the threaded connector, 3 is the adapter, 31 is the mounting base, 311 is the threaded hole, 32 is the adapter joint, 321 is the adapter hole, 33 is the magnetic attracting part, 4 is the pressing part, 41 is the first pressing block, 42 is the second pressing block, and 421 is the socket hole. Specific embodiments

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention. Embodiment

[0030] Refer to Figure 1 and Figure 2 In this embodiment, a bearing disassembly and assembly pressing device is provided. This device can be used to remove the bearing installed on the shaft head at the end of the roller or install a bearing on the shaft head. The device includes a driving cylinder 1, an axially movable transmission rod 2 driven by the driving cylinder, an adapter 3 connected to the end of the transmission rod, and a pressing part 4 detachably connected to the adapter;

[0031] The adapter 3 includes a mounting base 31 and an adapter joint 32 connected to the mounting base. The middle part of the adapter joint 32 is provided with an adapter hole 321 extending along the axis. In this embodiment, the mounting base 31 is provided with a threaded hole, and the end of the transmission rod is provided with a threaded connector 21. The mounting base can be threadedly connected and fixed to the end of the transmission rod. When the mounting base is relatively fixed to the transmission rod, the adapter joint extends parallel to the transmission rod; when disassembling and assembling bearings of different specifications, it may be necessary to replace different types of pressing parts 4. Relatively, the adapter joint can be rotated and disassembled from the end of the transmission rod and replaced with other models of adapter joints that are compatible; in this embodiment, the adapter joint and the transmission rod are coaxially arranged, but in actual use, the two only need to be parallel to each other in axis;

[0032] The pressing part 4 includes a first pressing block 41 and a second pressing block 42. The first pressing block is a cylindrical structure with a smaller outer diameter, and the second pressing block is a cylindrical structure with a larger outer diameter. One end of the second pressing block forms a sealing part. The first pressing block is connected to the sealing part and is coaxially arranged with the second pressing block; a socket hole 421 is formed in the middle of the second pressing block, and the inner diameter of the socket hole is larger than the outer diameter of the first pressing block;

[0033] Refer to Figure 3, when disassembling the bearing, the second pressing block of the pressing member is sleeved outside the adapter 32 through the socket hole 421. At this time, the first pressing member is used to apply a thrust to the shaft head at the end of the roller to separate the shaft head from the bearing; refer to Figure 4 , when installing the bearing, the first pressing block of the pressing member is inserted into the inner side of the adapter through the transfer hole 321. At this time, the second pressing member is used to apply a thrust to the bearing and sleeve the bearing on the shaft head.

[0034] The working principle of the present utility model is as follows:

[0035] When disassembling the bearing, the second pressing block is connected to the adapter through the socket hole, so that the first pressing block faces the roller direction. The outer diameter of the first pressing block is smaller than the shaft hole of the bearing, so that the first pressing block can pass through the middle of the bearing. After fixing the bearing, the driving cylinder is used to control the first pressing block to apply a thrust to the shaft head of the roller, and the shaft head can be pushed out from the middle of the bearing to realize the disassembly of the bearing; when installing the bearing, the first pressing block is inserted and matched with the transfer hole of the adapter, so that the second pressing block faces the roller direction. The aperture of the socket hole of the second pressing block is larger than the shaft head of the roller, so that the shaft head can extend into the socket hole. After fixing the roller, the driving cylinder is used to control the second pressing block to apply a thrust to the bearing, and the bearing can be sleeved on the shaft head to realize the installation of the bearing.

[0036] In some other embodiments, refer to Figure 3 and Figure 4 , the length of the adapter 32 is less than the depth of the socket hole 421, and the length of the first pressing block 41 is greater than the depth of the transfer hole 321, so that the adapter is stressed by the installation base during the disassembly and installation of the bearing, avoiding deformation of the adapter.

[0037] In some other embodiments, the outer side of the installation base is provided with anti-slip patterns or bayonets that can cooperate with a wrench to facilitate manual operation or the disassembly and installation of the adapter using a wrench.

[0038] In some other embodiments, refer to Figure 5 , the adapter 3 further includes a magnetic member 33. The magnetic member is an annular structure arranged around the adapter 32, and the magnetic member is fixedly connected to the installation base. Correspondingly, the pressing member should be made of a magnetic material.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bearing disassembly and assembly pressing device, characterized in that: It includes a driving cylinder, an axially movable transmission rod controlled by the driving cylinder, an adapter connected to the end of the transmission rod, and a pressing member detachably connected to the adapter; the adapter includes a mounting base and a connector parallel to the transmission rod and connected to the mounting base, and a transfer hole is formed at the axial center of the connector; the pressing member includes a first pressing block and a second pressing block, the first pressing block has a cylindrical structure and the outer diameter of the first pressing block corresponds to the inner diameter of the transfer hole, and a socket hole is formed in the middle of the second pressing block, and the inner diameter of the socket hole corresponds to the outer diameter of the connector.

2. The bearing disassembly and assembly pressing device according to claim 1, wherein: The adapter and the transmission rod are detachably connected.

3. The bearing disassembly and assembly pressing device according to claim 2, characterized in that: The mounting base is provided with a threaded hole, and a threaded connection head corresponding to the threaded hole is provided at the end of the transmission rod.

4. A bearing disassembly and assembly pressing device according to claim 1, characterized in that: The adapter further includes a magnetic member.

5. The bearing disassembly and assembly pressing device according to claim 4, characterized in that: The magnetic member is a ring structure arranged around the connector, and the magnetic member is fixedly connected to the mounting base.

6. The bearing disassembly and assembly pressing device according to claim 1, wherein: The outer side surface of the connector, the inner wall surface of the transfer hole, the outer side surface of the first fixed pressing block, and the inner wall surface of the socket hole are all smooth curved surfaces.

7. A bearing disassembly and assembly pressing device according to claim 1, characterized in that: The outer side surface of the mounting base is provided with anti-slip patterns or bayonets that can cooperate with a wrench.

8. A bearing disassembly and assembly pressing device according to claim 1, characterized in that: The length of the connector is less than the depth of the socket hole.

9. The bearing disassembly and assembly pressing device according to claim 1, characterized in that: The length of the first pressing block is greater than the depth of the transfer hole.

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