Bearing inner ring dismounting tool

Abstract

The utility model provides a bearing inner ring dismounting and mounting tool, which belongs to the technical field of tools and comprises a main plate, a threaded rod, a plurality of connecting rods, an annular plate and a driving nut, a through hole is formed in the middle of the main plate, the threaded rod penetrates through the through hole, and one end of the inner side of the threaded rod is in threaded connection with the end of a transmission shaft. The same ends of the connecting rods are connected to the inner side face of the main plate, the connecting rods surround the periphery of the transmission shaft, the annular plate is connected to one ends of the inner sides of the connecting rods, the transmission shaft is sleeved with the annular plate, the driving nut is in threaded connection with the threaded rod, and the driving nut moves in the axial direction of the threaded rod and pushes the main plate to move inwards or outwards. And the bearing is inwards pushed to be mounted or outwards pushed to be dismounted through the annular plate. According to the bearing inner ring disassembling and assembling tool, a bearing can be rapidly assembled and disassembled, and operation is very convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of tools and instruments, and more specifically relates to a tool for disassembling and assembling an inner ring of a bearing. Background Art

[0002] For slurry pumps, there is an interference fit between the bearing and the transmission shaft, and they are often installed by thermal installation (i.e. heating the inner ring of the bearing).

[0003] During the installation process, the inner ring of the bearing is prone to cooling down and cannot be completely installed. During the subsequent installation, a hammer or other tool is usually used to install the inner ring of the bearing. During the disassembly process, the bearing is usually lifted out with a screwdriver or pushed out from the other end with a crowbar, which makes the installation and disassembly of the bearing very inconvenient. Utility Model Content

[0004] The utility model aims to provide a bearing inner ring disassembly and assembly tool, aiming to solve the problem that the installation and disassembly operations of the bearing are very inconvenient.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a bearing inner ring disassembly and assembly tool, including a main board, a threaded rod, a plurality of connecting rods, an annular plate and a driving nut, a through hole is opened in the middle of the main board, the threaded rod passes through the through hole, the inner end of the threaded rod is threadedly connected to the end of the transmission shaft, the same end of the plurality of connecting rods is respectively connected to the inner side surface of the main board, the plurality of connecting rods are arranged around the outer periphery of the transmission shaft, the annular plate is connected to the inner end of the plurality of connecting rods, the annular plate is sleeved on the transmission shaft, the driving nut is threadedly connected to the threaded rod, the driving nut moves axially along the threaded rod, and pushes the main board inward or outward, so as to push the bearing inward to install or push the bearing outward to remove through the annular plate.

[0006] In a possible implementation, the bearing inner ring disassembly and assembly tool also includes a guide plate, a plurality of guide holes are circumferentially opened on the end surface of the guide plate, a plurality of connecting rods pass through the plurality of guide holes in a one-to-one correspondence, and the threaded rod vertically passes through and connects the guide plate.

[0007] In a possible implementation, a connecting thread segment is provided at one inner end of the threaded rod, the connecting thread segment is threadedly connected to the end of the transmission shaft, and the diameter of the connecting thread segment is smaller than the diameter of the threaded rod.

[0008] In one possible implementation, a step is formed between the connecting thread segment and the threaded rod, a through hole is opened in the middle of the guide plate, the inner diameter of the through hole is smaller than the inner diameter of the threaded rod, the connecting thread segment passes through the through hole and is pressed between the step and the transmission shaft.

[0009] In a possible implementation, the middle portion of the annular plate is provided with a central hole for the transmission shaft to pass through, a plurality of edge holes are circumferentially opened at the end of the annular plate, a plurality of connecting rods pass through the plurality of edge holes in a one-to-one correspondence, and the inner end of the connecting rod is threadedly connected to two limit nuts, and the two limit nuts are respectively located on the inner and outer sides of the annular plate.

[0010] In a possible implementation, the annular plate includes two semicircular annular plates that are disposed apart from each other, and opposite ends of the two semicircular annular plates are detachably connected by connecting bolts.

[0011] In one possible implementation, an annular assembly groove is circumferentially provided on the inner wall of the center hole of the annular plate, an annular adapter plate is inserted into the annular assembly groove, a center adapter hole for the transmission shaft to pass through is provided in the middle of the annular adapter plate, and the inner diameter of the center adapter hole is smaller than the inner diameter of the center hole.

[0012] In a possible implementation, both the inner end surface and the outer end surface of the annular plate are provided with an elastic anti-wear layer.

[0013] In a possible implementation, the number of the connecting rods is three, and the three connecting rods are evenly connected to the inner side surface of the mainboard in a circumferential direction.

[0014] The utility model provides a bearing inner ring disassembly and assembly tool with the beneficial effect that: compared with the prior art, the threaded rod passes through the through hole of the main board, the inner end of the threaded rod is connected to the end of the transmission shaft, multiple connecting rods are connected to the inner side of the main board, and the annular plate is connected to the inner end of the multiple connecting rods and is sleeved on the transmission shaft. When the bearing needs to be installed, the bearing is first sleeved on the transmission shaft, and then the annular plate is sleeved on the transmission shaft, the annular plate is located on the outer side of the bearing, the inner end of the threaded rod is aligned with the threaded hole of the transmission shaft, the threaded rod is rotated so that the inner end of the annular plate is gradually screwed into the threaded hole of the transmission shaft, until the inner end face of the annular plate abuts against the outer end face of the bearing, the drive nut is rotated, the drive nut continuously pushes the main board to move inward, the main board drives the annular plate to push the bearing end face inward through multiple connecting rods, and the bearing is gradually installed in place. When the bearing needs to be removed, first put the annular plate on the transmission shaft, the annular plate is located on the inner side of the bearing, align the inner end of the threaded rod with the threaded hole of the transmission shaft, rotate the threaded rod so that the inner end is gradually screwed into the threaded hole of the transmission shaft until the outer end face of the annular plate abuts against the inner end face of the bearing, rotate the drive nut, the drive nut continuously pushes the main board to move outward, the main board drives the annular plate to push the bearing end face outward through multiple connecting rods, and the bearing gradually detaches from the transmission shaft. The utility model provides a bearing inner ring disassembly tool that can quickly complete the installation and disassembly of the bearing, and the operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A structural schematic diagram of a bearing inner ring disassembly and assembly tool provided by the utility model;

[0017] Figure 2 A diagram showing the use of a bearing inner ring disassembly and assembly tool provided by the utility model in a bearing installation state;

[0018] Figure 3 A diagram showing the use of a bearing inner ring disassembly tool provided by the utility model in a bearing disassembly state;

[0019] Figure 4 The present invention is a schematic structural diagram of a bearing inner ring disassembly and assembly tool provided in another embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1. Main board; 2. Threaded rod; 3. Connecting rod; 4. Ring plate; 5. Driving nut; 6. Guide plate; 7. Connecting threaded section; 8. Center hole; 9. Limiting nut; 10. Ring adapter plate; 11. Center adapter hole; 12. Elastic anti-wear layer. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] See also Figures 1 to 3 Now, a bearing inner ring disassembly and assembly tool provided by the utility model is described. A bearing inner ring disassembly and assembly tool comprises a main board 1, a threaded rod 2, a plurality of connecting rods 3, an annular plate 4 and a driving nut 5. A through hole is opened in the middle of the main board 1, and the threaded rod 2 passes through the through hole. One end of the inner side of the threaded rod 2 is threadedly connected to the end of the transmission shaft. The same end of the plurality of connecting rods 3 is respectively connected to the inner side of the main board 1. The plurality of connecting rods 3 are arranged around the outer periphery of the transmission shaft. The annular plate 4 is connected to one end of the inner side of the plurality of connecting rods 3. The annular plate 4 is sleeved on the transmission shaft. The driving nut 5 is threadedly connected to the threaded rod 2. The driving nut 5 moves axially along the threaded rod 2 to push the main board 1 inward or outward to push the bearing inward or outward through the annular plate 4 to remove the bearing.

[0024] The utility model provides a bearing inner ring disassembly and assembly tool. Compared with the prior art, the threaded rod 2 passes through the through hole of the main board 1, the inner end of the threaded rod 2 is connected to the end of the transmission shaft, multiple connecting rods 3 are connected to the inner side of the main board 1, and the annular plate 4 is connected to the inner end of the multiple connecting rods 3 and is sleeved on the transmission shaft. When the bearing needs to be installed, the bearing is first sleeved on the transmission shaft, and then the annular plate 4 is sleeved on the transmission shaft. The annular plate 4 is located on the outer side of the bearing, and the inner end of the threaded rod 2 is aligned with the threaded hole of the transmission shaft. The threaded rod 2 is rotated so that the inner end of the threaded rod 2 is gradually screwed into the threaded hole of the transmission shaft until the inner end face of the annular plate 4 is against the outer end face of the bearing, and the driving nut 5 is rotated. The driving nut 5 continuously pushes the main board 1 to move inward, and the main board 1 drives the annular plate 4 to push the bearing end face inward through the multiple connecting rods 3, and the bearing is gradually installed in place. When the bearing needs to be disassembled, the annular plate 4 is first mounted on the transmission shaft, and then the annular plate 4 is mounted on the transmission shaft. The annular plate 4 is located on the inner side of the bearing, and the inner end of the threaded rod 2 is aligned with the threaded hole of the transmission shaft. The threaded rod 2 is rotated so that the inner end is gradually screwed into the threaded hole of the transmission shaft until the outer end face of the annular plate 4 abuts against the inner end face of the bearing, and the driving nut 5 is rotated. The driving nut 5 continuously pushes the main board 1 to move outward. The main board 1 drives the annular plate 4 to push the bearing end face outward through multiple connecting rods 3, and the bearing gradually detaches from the transmission shaft. The utility model provides a bearing inner ring disassembly tool that can quickly complete the installation and disassembly of the bearing, and the operation is very convenient.

[0025] When the device is used to install the bearing, the drive nut 5 is located on the outside of the main board 1, and the main board 1 is driven to move along the inside by rotating the drive nut 5; when the device is used to remove the bearing, the drive nut 5 is located on the inside of the main board 1, and the drive nut 5 is driven to move outward by rotating the drive nut 5. In order to achieve the versatility of the device, two drive nuts 5 can be installed on the threaded rod 2, and the two drive nuts 5 are respectively located on the inside and outside of the main board 1.

[0026] The bearing inner ring disassembly and assembly tool also includes a guide plate 6, a plurality of guide holes are opened in the circumferential direction on the end surface of the guide plate 6, a plurality of connecting rods 3 pass through the plurality of guide holes in a one-to-one correspondence, and the threaded rod 2 vertically passes through the connecting guide plate 6. The guide plate 6 remains stationary relative to the transmission shaft, and the movement of the main board 1 drives the movement of the plurality of connecting rods 3, the plurality of connecting rods 3 correspond to the plurality of guide holes in a one-to-one correspondence and clearance fit, and the connecting rods 3 and the guide holes can provide guidance for the movement of the annular plate 4.

[0027] A connecting thread section 7 is provided at one inner end of the threaded rod 2 , and the connecting thread section 7 is matched with the threaded hole at the end of the transmission shaft. The connecting thread section 7 is threadedly connected to the end of the transmission shaft, and the diameter of the connecting thread section 7 is smaller than the diameter of the threaded rod 2 .

[0028] A step is formed between the connecting thread section 7 and the threaded rod 2, a through hole is provided in the middle of the guide plate 6, the inner diameter of the through hole is smaller than the inner diameter of the threaded rod 2, and the connecting thread section 7 passes through the through hole and is pressed between the step and the transmission shaft to connect the guide plate 6 to the threaded rod 2. To ensure that the guide plate 6 can be completely pressed between the threaded rod 2 and the transmission shaft, a gasket can be mounted on the connecting thread section 7, and the gasket abuts against the step to press the guide plate 6 between the gasket and the end face of the transmission shaft.

[0029] The middle of the annular plate 4 is provided with a central hole 8 for the transmission shaft to pass through, and the end of the annular plate 4 is provided with a plurality of edge holes in the circumferential direction. The plurality of connecting rods 3 pass through the plurality of edge holes one by one. The inner end of the connecting rod 3 is threadedly connected with two limit nuts 9, and the two limit nuts 9 are respectively located on the inner and outer sides of the annular plate 4. The inner end of the connecting rod 3 is provided with an external thread, and the two limit nuts 9 are respectively threadedly connected to the inner end of the connecting rod 3, and the two limit nuts 9 are respectively located on the front and rear sides of the annular plate 4. The distance of the annular plate 4 relative to the main board 1 is adjusted by adjusting the two limit nuts 9 to adapt to the two operation modes of installation and removal. Similarly, two limit nuts 9 can also be provided at the outer end of the connecting rod 3, and the distance of the annular plate 4 relative to the main board 1 can also be adjusted. Of course, the outer end of the connecting rod 3 can also be directly welded and fixed to the main board 1, and only the inner end of the connecting rod 3 is used for adjustment.

[0030] The annular plate 4 includes two semicircular annular plates that are arranged in a split manner, and the opposite ends of the two semicircular annular plates are detachably connected by connecting bolts. The annular plate 4 is arranged as two semicircular annular plates that are arranged in a split manner, so that the annular plate 4 can be installed on the inner side of the bearing to realize the disassembly of the bearing. Of course, the annular plate 4 can also be spliced ​​by multiple arc plates, such as three 120° arc plates, as long as the annular plate 4 can be assembled, and no further details are given here.

[0031] See also Figure 4 As another embodiment, an annular assembly groove is provided in the circumferential direction of the inner wall of the center hole 8 of the annular plate 4, and an annular adapter plate 10 is inserted in the annular assembly groove. A center adapter hole 11 for the transmission shaft to pass through is provided in the middle of the annular adapter plate 10, and the inner diameter of the center adapter hole 11 is smaller than the inner diameter of the center hole 8. When installing or removing a bearing with a smaller outer diameter, the existing annular plate 4 may not be able to completely abut against the end face of the bearing to complete the installation and removal of the bearing due to the larger inner diameter of the center hole 8. At this time, the annular adapter plate 10 is installed on the inner side of the annular plate 4 through the annular assembly groove. Since the inner diameter of the center adapter hole 11 is smaller than the inner diameter of the center hole 8, the annular adapter plate 10 can be used to abut against the end face of the bearing to complete the installation and removal of the bearing.

[0032] Preferably, both the inner and outer end faces of the annular plate 4 are provided with an elastic anti-wear layer 12, which is a rubber layer, which is bonded to the inner and outer end faces of the annular plate 4, and has corresponding openings in the rubber layer corresponding to the openings of the annular plate 4. The elastic anti-wear layer 12 can prevent the annular plate 4 from directly contacting the bearing end face, thereby preventing the bearing end face from being damaged when the bearing is installed or removed. At the same time, by utilizing the characteristics of the elastic anti-wear layer 12 itself that it deforms under pressure, the annular plate 4 can be completely compacted on the bearing end face with the help of the elastic anti-wear layer 12, and the force is more uniform and stable.

[0033] Specifically, there are three connecting rods 3 , and the three connecting rods 3 are evenly connected to the inner side surface of the main board 1 in the circumferential direction, providing a more stable guiding effect.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing inner ring disassembly and assembly tool, characterized in that: The invention comprises a main board (1), a threaded rod (2), a plurality of connecting rods (3), an annular plate (4) and a driving nut (5). A through hole is provided in the middle of the main board (1), the threaded rod (2) passes through the through hole, an inner end of the threaded rod (2) is threadedly connected to the end of a transmission shaft, the same end of a plurality of connecting rods (3) is respectively connected to the inner side surface of the main board (1), a plurality of connecting rods (3) are arranged around the outer periphery of the transmission shaft, the annular plate (4) is connected to an inner end of a plurality of connecting rods (3), the annular plate (4) is sleeved on the transmission shaft, the driving nut (5) is threadedly connected to the threaded rod (2), the driving nut (5) moves axially along the threaded rod (2), and pushes the main board (1) inward or outward, so as to push the bearing inward to install or push the bearing outward to remove through the annular plate (4).

2. A bearing inner ring disassembly and assembly tool as claimed in claim 1, characterized in that: The bearing inner ring disassembly and assembly tool also includes a guide plate (6), a plurality of guide holes are circumferentially opened on the end surface of the guide plate (6), a plurality of connecting rods (3) pass through the plurality of guide holes in a one-to-one correspondence, and the threaded rod (2) vertically passes through and connects the guide plate (6).

3. A bearing inner ring disassembly and assembly tool as claimed in claim 2, characterized in that: A connecting thread section (7) is provided at one inner end of the threaded rod (2), the connecting thread section (7) being threadedly connected to the end of the transmission shaft, and the diameter of the connecting thread section (7) is smaller than the diameter of the threaded rod (2).

4. A bearing inner ring disassembly and assembly tool as claimed in claim 3, characterized in that: A step is formed between the connecting threaded section (7) and the threaded rod (2); a through hole is provided in the middle of the guide plate (6); the inner diameter of the through hole is smaller than the inner diameter of the threaded rod (2); the connecting threaded section (7) passes through the through hole and is pressed between the step and the transmission shaft.

5. A bearing inner ring disassembly and assembly tool as claimed in claim 1, characterized in that: The annular plate (4) has a central hole (8) in the middle for the transmission shaft to pass through, and the end of the annular plate (4) is circumferentially provided with a plurality of edge holes, and a plurality of connecting rods (3) pass through the plurality of edge holes in a one-to-one correspondence, and one end of the inner side of the connecting rod (3) is threadedly connected to two limit nuts (9), and the two limit nuts (9) are respectively located on the inner side and the outer side of the annular plate (4).

6. A bearing inner ring disassembly and assembly tool as claimed in claim 5, characterized in that: The annular plate (4) comprises two semicircular annular plates which are arranged in a split manner, and the opposite ends of the two semicircular annular plates are detachably connected via connecting bolts.

7. A bearing inner ring disassembly and assembly tool as claimed in claim 6, characterized in that: An annular assembly groove is provided in the circumferential direction of the inner wall of the center hole (8) of the annular plate (4), an annular adapter plate (10) is inserted into the annular assembly groove, a center adapter hole (11) is provided in the middle of the annular adapter plate (10) for the transmission shaft to pass through, and the inner diameter of the center adapter hole (11) is smaller than the inner diameter of the center hole (8).

8. A bearing inner ring disassembly and assembly tool as claimed in claim 1, characterized in that: The inner end surface and the outer end surface of the annular plate (4) are both provided with an elastic anti-wear layer (12).

9. A bearing inner ring disassembly and assembly tool as claimed in claim 1, characterized in that: The number of the connecting rods (3) is three, and the three connecting rods (3) are evenly connected to the inner side surface of the main board (1) in the circumferential direction.

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