Bearing removal aid

Abstract

The present application relates to the technical field of bearings, and in particular to a bearing removal assistant, comprising a traction shaft, a removal head being installed at one end of the traction shaft, and a removal device for facilitating the removal of bearings in blind holes being provided in the removal head; a traction sleeve with an internal thread structure is sleeved on the outer side wall of the traction shaft, and the traction sleeve is threadedly connected to the traction thread opened on the outer side wall of the traction shaft, and a positioning device is sleeved on the traction shaft for being rotatably connected to the traction sleeve, for positioning the traction sleeve at the outer end of the blind hole; a lubricating device is provided at the end of the removal head facing away from the traction shaft, for lubricating the inner side wall of the blind hole; the present invention can remove the bearings in the workpiece shaft through the traction shaft, the removal head and the removal device, and at the same time can realize the removal of bearings in workpiece shafts of different inner diameters through a slidably adjustable sliding block, thereby improving the scope of application of the present invention.

Description

Technical Field

[0001] The present application relates to the field of bearing technology, and in particular to a bearing removal aid. Background Art

[0002] Bearings are a crucial component in modern mechanical equipment. Their primary function is to support rotating parts, reduce friction during movement, and ensure rotational accuracy. Due to the high-intensity operation of bearings, they experience significant wear and tear. Therefore, they must be regularly disassembled for repair or replacement. If a bearing is to be used again after disassembly, or if its condition needs to be checked, disassembly must be performed with the same care as during installation. Care must be taken to avoid damaging the bearing components, especially when disassembling bearings with interference fits, which can be challenging.

[0003] Therefore, it is also very important to design and manufacture disassembly tools according to needs. For example, a blind hole bearing removal device with the existing publication number CN106881687A includes: a tightening sleeve, a guide head, a push rod, and a flower head. The flower head is a thin-walled tubular structure, including a tubular body and a plurality of jaws axially extending from one end of the tubular body and arranged in an annular direction. Each jaw is provided with a gradually expanding section with an outer wall diameter gradually expanding; the outer wall of the other end of the tubular body is provided with an external thread; the tightening sleeve is fitted on the outside of the flower head, one end of which is provided with an internal thread, which can be matched with the external thread of the tubular body, and the other end is pressed against the gradually expanding section of the clamping jaw; the guide head is fixedly connected to the other end of the tubular body, and an internal threaded hole is provided in the center of the guide head; the push rod is provided with an external threaded section along the length direction, and the external threaded section is matched with the internal threaded hole of the guide head.

[0004] Although the above-mentioned prior art can disassemble and remove bearings in blind holes, and can remove bearings in blind holes of different depths, it still has some limitations and defects:

[0005] 1. If the above-mentioned prior art is used, when targeting blind holes of different diameters, a flower head of a matching size needs to be configured to ensure that the flower head can be smoothly inserted into the blind hole and the bearing can be removed. Therefore, the above-mentioned prior art requires a matching flower head, an extension tube and a tightening sleeve for matching blind holes of different diameters, so it is not a good disassembly and removal tool.

[0006] 2. When removing the bearing from the blind hole using the above-mentioned prior art, the bearing is directly disassembled into its individual parts, which may damage the individual parts of the bearing, thereby causing the bearing to be damaged and unable to be repaired and reused.

[0007] Based on this, the present invention provides a device that can completely remove a bearing from a blind hole, and can remove bearings from blind holes with different diameters, so as to increase the scope of application of the present invention. Summary of the Invention

[0008] In order to solve the above problems, the present application provides a bearing removal aid, which adopts the following technical solutions:

[0009] A bearing removal aid comprises a traction shaft, a removal head is installed at one end of the traction shaft, and a removal device for facilitating the removal of bearings in blind holes is provided in the removal head; a traction sleeve with an internal thread structure is sleeved on the outer side wall of the traction shaft, and the traction sleeve is threadedly connected to the traction thread opened on the outer side wall of the traction shaft, and a positioning device rotatably connected to the traction sleeve is sleeved on the traction shaft for positioning the traction sleeve at the outer end of the blind hole; a lubrication device is provided on the end of the removal head facing away from the traction shaft for lubricating the inner side wall of the blind hole.

[0010] Preferably, the positioning device includes a positioning head and a positioning ring, the positioning ring is rotatably connected to one end of the traction sleeve facing the removal head, the positioning head is connected to one end of the positioning ring facing away from the traction sleeve, and the positioning head and the positioning ring are both slidably sleeved on the traction shaft; a plurality of positioning bevels are uniformly opened on the circumference of the positioning head facing the positioning ring, a positioning assembly is slidably arranged in the positioning bevel, and the positioning assembly is connected to a connecting block on one end facing the positioning ring;

[0011] The outer wall of the positioning ring is provided with a positioning thread, and a rotating disk threadedly connected to the positioning thread is sleeved on the outer wall of the positioning ring, an auxiliary disk is provided on the side of the rotating disk that rotates toward the positioning head, and a plurality of guide grooves arranged along the radial direction of the auxiliary disk are opened on the circumference of the auxiliary disk, and the end of the connecting block away from the positioning assembly is slidably arranged in the guide groove, and an annular rotating handle is provided on the end of the rotating disk away from the auxiliary disk to facilitate the control of the rotation of the rotating disk;

[0012] The traction sleeve is provided with a control handle for controlling the rotation of the traction sleeve.

[0013] Preferably, the positioning assembly includes a positioning base, the positioning base is provided with a matching inclined surface that matches the slope of the positioning inclined groove, and the connecting block is connected to the positioning base, and the positioning base is provided with a positioning block at one end away from the positioning head, and the positioning block is provided with a through internal threaded hole on the side facing the positioning base, the internal threaded hole is internally threaded with a positioning screw, and the positioning screw is rotatably connected to the positioning base;

[0014] A plurality of limiting bars are provided on one side of the positioning base facing the positioning block, and a limiting groove which is slidably matched with the limiting bars is provided on the positioning block.

[0015] Preferably, the removal device includes a control block, a control cavity is formed at one end of the removal head away from the traction shaft, the control block is slidably arranged in the control cavity, a plurality of extension holes are uniformly formed in the circumferential direction of the outer wall of the removal head and penetrate into the control cavity, an extension block is slidably arranged in the extension hole, an inclined surface is formed at one end of the extension block facing into the control cavity, and a control inclined surface is formed on the control block to interfere with the inclined surface;

[0016] The traction shaft is a hollow cylindrical structure with a control screw provided inside. The control screw passes through the control cavity and is threadedly connected to the control block. The end of the control screw facing away from the removal head passes through the outside of the traction shaft and is connected to a rotating handle.

[0017] Preferably, an annular groove is provided on the outer side wall of the removal head, an elastic ring is provided in the annular groove, an arcuate concave surface is provided on the end of the extension block away from the removal head, and the elastic ring is placed in the arcuate concave surface of the extension block.

[0018] Preferably, the extension block is provided with a step surface on one end away from the control chamber and toward the positioning device, and a sliding block sliding along the radial direction of the removal head is provided on the step surface, a through hole is provided on the sliding block, and a rotating screw is threadedly connected to the through hole, and the rotating screw is rotatably connected to the step surface, a guide block is provided on the step surface, and a guide hole slidingly matched with the guide block is provided on the sliding block.

[0019] Preferably, the lubrication device includes a lubrication shaft, one end of the lubrication shaft is installed on the end of the removal head away from the traction shaft, and a plurality of strip grooves are evenly opened on the outer wall of the lubrication shaft in the circumference, and strip sleeves are hinged on both sides of the strip grooves, and an extension bar is slidably provided at the end of the strip sleeve away from the strip groove, and a push spring is connected between the extension bar and the strip sleeve for driving the extension bar to move in the direction away from the strip sleeve, a lubrication block is hinged between the opposite ends of the two extension bars, and a lubrication surface is provided at the end of the lubrication block away from the lubrication shaft, and a return spring is connected between the two strip sleeves located in the same strip groove for driving the strip sleeve to rotate in the direction away from the strip groove.

[0020] Preferably, an elastic block is provided on the side of the positioning block away from the positioning base, and the end surface of the elastic block facing the inner wall of the workpiece shaft is provided with several concave and convex structures for increasing friction, so as to increase the pressing force between the positioning block and the inner wall of the workpiece shaft.

[0021] Preferably, a plurality of guide bars are provided on the inner side wall of the control cavity, and a guide slot for slidingly cooperating with the guide bars is provided on the side wall of the control block.

[0022] Preferably, the lubrication shaft is detachably mounted on one end of the removal head, and one end of the traction shaft is also detachably mounted on the other end of the removal head.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The present invention can remove the bearings inside the workpiece shaft through the traction shaft, the removal head and the removal device. At the same time, the sliding block that can be slidably adjusted can realize the removal of bearings in workpiece shafts with different inner diameters, thereby improving the scope of application of the present invention.

[0025] 2. The present invention presses the positioning device against the inner wall of the workpiece shaft to ensure that the traction shaft and the workpiece shaft remain coaxial, so that the removal device can push the bearing to slide smoothly in the workpiece shaft, avoiding the problem of the bearing being deflected in the workpiece shaft, which increases the difficulty of removal and damages the bearing.

[0026] 3. The present invention can lubricate the inner wall of the workpiece shaft through the lubricating surface on the lubricating shaft to ensure that the bearing slides smoothly in the workpiece shaft, making it easier to remove the bearing.

[0027] 4. The lubrication shaft of the present invention is detachably mounted on one end of the removal head, and one end of the traction shaft is also detachably mounted on the other end of the removal head, so that the present invention can change the removal head to be installed at the end of the traction shaft, thereby enabling the bearing to be installed in the workpiece shaft, further improving the scope of application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural diagram of the traction shaft, the removal head, the removal device, the positioning device and the lubrication device of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the positioning device of the present invention Figure 1 .

[0031] Figure 4 This is a schematic diagram of the structure of the positioning device of the present invention Figure 2 .

[0032] Figure 5 It is a cross-sectional view of the positioning device of the present invention.

[0033] Figure 6 This invention Figure 5 A partial enlarged view of point A.

[0034] Figure 7 It is a schematic diagram of the structure between the removal device and the removal head of the present invention.

[0035] Figure 8 It is a schematic structural diagram of the removal device of the present invention.

[0036] Figure 9 It is a structural diagram of the removal device, the removal head and the lubrication device of the present invention.

[0037] Explanation of reference numerals: 100, workpiece shaft; 110, bearing; 1, traction shaft; 2, removal head; 3, removal device; 4, traction sleeve; 41, control handle; 11, traction thread; 5, positioning device; 6, lubrication device; 51, positioning head; 52, positioning ring; 53, positioning inclined groove; 54, positioning assembly; 55, connecting block; 56, positioning thread; 57, rotating disk; 58, auxiliary disk; 59, guide groove; 50, annular handle; 541, positioning base; 542, matching inclined surface; 543, positioning block; 544, internal threaded hole; 545, positioning screw; 546, Limiting strip; 547, limiting groove; 548, elastic block; 31, control block; 32, control cavity; 33, extension hole; 34, extension block; 35, inclined surface; 36, control inclined surface; 37, control screw; 38, rotating handle; 21, annular groove; 22, elastic ring; 23, arc-shaped concave surface; 341, step surface; 342, sliding block; 343, through hole; 344, rotating screw; 345, guide block; 346, guide hole; 61, lubrication shaft; 62, strip groove; 63, strip sleeve; 64, extension strip; 65, lubrication block; 66, lubrication surface; 67, return spring. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-9 This application is described in further detail. Example 1:

[0039] See Figure 1-2 The embodiment of the present application discloses a bearing removal assistant, comprising a traction shaft 1, a removal head 2 being installed at one end of the traction shaft 1, and a removal device 3 for facilitating the removal of a bearing 110 in a blind hole being provided in the removal head 2; a traction sleeve 4 with an internal thread structure is sleeved on the outer side wall of the traction shaft 1, and the traction sleeve 4 is threadedly connected to the traction thread 11 opened on the outer side wall of the traction shaft 1, and a positioning device 5 rotatably connected to the traction sleeve 4 is sleeved on the traction shaft 1, for positioning the traction sleeve 4 at the outer end of the workpiece shaft 100; a lubrication device 6 is provided on the end of the removal head 2 facing away from the traction shaft 1, for lubricating the inner side wall of the blind hole.

[0040] In the specific implementation process, first, one end of the traction shaft 1 equipped with the removal head 2 is deeply inserted into the hole of the workpiece shaft 100, and the inner wall of the workpiece shaft 100 is lubricated by the lubricating device 6 installed on the removal head 2, so as to facilitate the subsequent sliding removal of the bearing 110 in the workpiece shaft 100. After the removal head 2 passes through the bearing 110, the positioning device 5 is fixed to the inner wall of the workpiece shaft 100, which can ensure that the traction shaft 1 and the workpiece shaft 100 maintain the same axis, and the bearing 110 can be removed more smoothly, avoiding the bearing 110 from being deflected and stuck in the workpiece shaft 100, causing difficulty in removal, and also damaging the bearing 110, further reducing the service life of the bearing 110;

[0041] After the positioning device 5 is fixed on the inner wall of the workpiece shaft 100, the bearing 110 is restricted by the removal device 3 so that when the traction sleeve 4 is rotated, the traction shaft 1 and the removal head 2 are driven to move toward the positioning device 5 under the action of the traction thread 11, thereby pushing the bearing 110 in the workpiece shaft 100 toward the positioning device 5 through the removal device 3 until the bearing 110 moves out of the workpiece shaft 100, at which time the removal of the bearing 110 is completed.

[0042] See Figure 4 A control handle 41 is provided on the traction sleeve 4 to facilitate the staff to drive the rotation of the traction sleeve 4 by rotating the control handle 41.

[0043] See Figure 3-5 The positioning device 5 includes a positioning head 51 and a positioning ring 52. The positioning ring 52 is rotatably connected to the end of the traction sleeve 4 facing the removal head 2. The positioning head 51 is connected to the end of the positioning ring 52 facing away from the traction sleeve 4, and the positioning head 51 and the positioning ring 52 are both slidably sleeved on the traction shaft 1; the positioning head 51 is provided with a plurality of positioning inclined grooves 53 evenly circumferentially on one side of the positioning ring 52, and a positioning component 54 is slidably arranged in the positioning inclined groove 53. The positioning component 54 is connected to a connecting block 55 at one end facing the positioning ring 52; by pushing the connecting block 55 to drive the positioning component 54 to slide on the slope of the positioning inclined groove 53 until the positioning component 54 contacts and tightens against the inner side wall of the workpiece shaft 100, so as to realize the limited fixation between the positioning head 51 and the workpiece shaft 100, thereby facilitating the subsequent removal of the bearing 110 in the workpiece shaft 100.

[0044] A positioning thread 56 is provided on the outer wall of the positioning ring 52, and a rotating disk 57 threadedly connected to the positioning thread 56 is sleeved on the outer wall of the positioning ring 52. An auxiliary disk 58 is provided on the rotating disk 57 to rotate toward one side of the positioning head 51, and a plurality of guide grooves 59 arranged along its radial direction are opened on the auxiliary disk 58. The end of the connecting block 55 away from the positioning assembly 54 is slidably set in the guide groove 59, and the end of the rotating disk 57 away from the auxiliary disk 58 is provided with an annular handle 50 for facilitating the control of the rotation of the rotating disk 57.

[0045] During the specific implementation process, when the removal head 2 penetrates into the workpiece shaft 100 and passes through the bearing 110 to be removed, the positioning head 51 is pushed into the port of the workpiece shaft 100. At this time, the staff holds the annular handle 50 and rotates it to make the rotating disk 57 rotate on the positioning ring 52 and engage with the positioning thread 56, driving the rotating disk 57 to move toward the positioning head 51; and then, with the cooperation of the auxiliary disk 58 and the connecting block 55, the positioning assembly 54 is driven to slide upward along the slope in the positioning inclined groove 53, and in this process, the connecting block 55 will also slide in the guide groove 59 until the positioning assembly 54 is tightly pressed against the inner wall of the workpiece shaft 100. At this time, the positioning head 51 is restricted to the workpiece shaft 100, and it is ensured that the traction shaft 1 and the workpiece shaft 100 remain coaxial, thereby ensuring that the bearing 110 can be smoothly removed later.

[0046] In addition, due to the difference in the types of workpiece shafts 100, the inner diameters thereof may also be different, and there is a problem that the positioning assembly 54 cannot always be tightly pressed against the inner wall of the workpiece shaft 100; for details, see Figure 5-6 The positioning assembly 54 includes a positioning base 541, which is provided with a matching inclined surface 542 that matches the slope of the positioning inclined groove 53, and the connecting block 55 is connected to the positioning base 541. A positioning block 543 is provided at one end of the positioning base 541 away from the positioning head 51. The positioning block 543 is provided with a through internal threaded hole 544 on the side facing the positioning base 541. A positioning screw 545 is internally threadedly connected to the internal threaded hole 544, and the positioning screw 545 is rotatably connected to the positioning base 541.

[0047] A plurality of limiting bars 546 are provided on one side of the positioning base 541 facing the positioning block 543 . The positioning block 543 is provided with limiting grooves 547 that slidably cooperate with the limiting bars 546 to ensure that the positioning block 543 can be firmly set on the positioning base 541 .

[0048] During the specific implementation process, when the inner diameter of the workpiece shaft 100 is too large and the positioning block 543 cannot be pressed against the inner wall of the workpiece shaft 100, the staff uses a wrench to rotate the positioning screw 545 so that the positioning block 543 can slide along the length direction of the limiting strip 546, thereby changing the distance between the positioning block 543 and the positioning base 541, so that the positioning block 543 can limit and press against the inner walls of more workpiece shafts 100 with different diameters, thereby improving the scope of application of the present invention.

[0049] An elastic block 548 is provided on the side of the positioning block 543 facing away from the positioning base 541, and a plurality of concave and convex structures for increasing friction are provided on the end face of the elastic block 548 facing the inner wall of the workpiece shaft 100, which is used to increase the clamping force between the positioning block 543 and the inner wall of the workpiece shaft 100, ensuring that the positioning head 51 can be stably restricted in the workpiece shaft 100 so that the bearing 110 can be smoothly removed.

[0050] See Figure 7-8 The removal device 3 includes a control block 31. A control cavity 32 is provided at the end of the removal head 2 facing away from the traction shaft 1. The control block 31 is slidably arranged in the control cavity 32. A plurality of extension holes 33 are evenly provided on the outer wall of the removal head 2 and penetrate into the control cavity 32. An extension block 34 is slidably arranged in the extension hole 33. An inclined surface 35 is provided at one end of the extension block 34 facing into the control cavity 32. A control inclined surface 36 is provided on the control block 31 to interfere with the inclined surface 35.

[0051] The traction shaft 1 is a hollow cylindrical structure with a control screw 37 provided inside. The control screw 37 passes through the control cavity 32 and is threadedly connected to the control block 31. The end of the control screw 37 facing away from the removal head 2 passes through the outside of the traction shaft 1 and is connected to a rotating handle 38.

[0052] During the specific implementation process, when the removal head 2 passes through the bearing 110 and presses the positioning device 5 against the inner wall of the workpiece shaft 100, the rotating handle 38 is turned to rotate the control screw 37, thereby driving the control block 31 to slide in the control cavity 32, so that the extension block 34 is driven to slide in the direction away from the control cavity 32 under the interference cooperation between the control inclined surface 36 and the inclined surface 35, until the extension block 34 passes the inner diameter of the bearing 110, thereby ensuring that the extension block 34 can contact the side of the bearing 110 and drive the bearing 110 to move toward the positioning device 5, thereby smoothly removing the bearing 110 from the workpiece shaft 100.

[0053] When the control screw 37 rotates in the opposite direction, in order to ensure that the extension block 34 can smoothly return to the initial position, the present invention provides an annular groove 21 on the outer wall of the removal head 2, and an elastic ring 22 is provided in the annular groove 21. The end of the extension block 34 facing away from the removal head 2 is provided with an arc-shaped concave surface 23, and the elastic ring 22 is placed in the arc-shaped concave surface 23 of the extension block 34; when the control inclined surface 36 of the control block 31 no longer conflicts with the extension block 34, the extension block 34 is driven to move into the control cavity 32 under the action of the elastic force of the elastic ring 22 until the extension block 34 returns to the initial position.

[0054] When dealing with workpiece shafts 100 of different diameters, the size of the bearings 110 installed therein will also change accordingly. Therefore, the present invention provides a step surface 341 on the side of the extension block 34 away from the control chamber 32 and toward the end of the positioning device 5. A sliding block 342 that slides along the radial direction of the removal head 2 is provided on the step surface 341. A through hole 343 is provided on the sliding block 342, and a rotating screw 344 is threadedly connected to the through hole 343. The rotating screw 344 is rotatably connected to the step surface 341. A guide block 345 is provided on the step surface 341, and a guide hole 346 that slides with the guide block 345 is provided on the sliding block 342.

[0055] During the specific implementation process, when the bearing 110 is too large and the extension block 34 cannot withdraw it from the workpiece shaft 100, the staff uses a wrench to turn the rotating screw 344 to drive the sliding block 342 to slide downward along the length of the guide block 345, thereby changing the distance between the sliding block 342 and the removal head 2, ensuring that the sliding block 342 can smoothly push the bearing 110 and move it out of the workpiece shaft 100 smoothly.

[0056] In order to ensure that the control block 31 can only slide along the axial direction of the control screw rod 37, the present invention provides a plurality of guide bars on the inner side wall of the control cavity 32, and the side wall of the control block 31 is provided with a guide groove that slides with the guide bar; the guide bar can limit the rotation of the control block 31 in the control cavity 32, ensuring that the control block 31 moves along the length direction of the guide bar, so that the control inclined surface 36 of the control block 31 can smoothly interfere with the inclined surface 35 of the extension block 34.

[0057] In order to ensure that the bearing 110 can slide smoothly in the workpiece shaft 100, the present invention lubricates the inner wall of the workpiece shaft 100 through the lubricating device 6. For details, see Figure 9 The lubricating device 6 includes a lubrication shaft 61, one end of which is mounted on the end of the removal head 2 away from the traction shaft 1, and a plurality of strip grooves 62 are evenly opened on the outer wall of the lubrication shaft 61 in the circumferential direction, and a strip sleeve 63 is hinged on both sides of the strip groove 62. An extension bar 64 is slidingly provided at one end of the strip sleeve 63 away from the strip groove 62, and a push spring (not shown in the figure) is connected between the extension bar 64 and the strip sleeve 63, which is used to drive the extension bar 64 to move away from the strip sleeve 63. A lubrication block 65 is hinged between the opposite ends of the two extension bars 64, and a lubrication surface 66 is provided at the end of the lubrication block 65 away from the lubrication shaft 61. A return spring 67 is connected between the two strip sleeves 63 located in the same strip groove 62, which is used to drive the strip sleeve 63 to rotate in the direction away from the strip groove 62.

[0058] During the specific implementation process, when the lubrication shaft 61 moves to the inside of the workpiece shaft 100, the lubrication block 65 is driven to move toward the inner wall of the workpiece shaft 100 under the action of the return spring 67 and the push spring until the lubrication surface 66 contacts the inner wall of the workpiece shaft 100. At this time, the staff rotates the traction shaft 1 to drive multiple lubrication surfaces 66 to rotate on the inner wall of the workpiece shaft 100, so that the inner wall of the workpiece shaft 100 can be evenly lubricated through the lubrication surface 66, so that the subsequent bearing 110 can be smoothly moved out of the workpiece shaft 100.

[0059] When the lubrication shaft 61 moves to the position where the bearing 110 is set, it passes through the inner diameter of the bearing 110. At this time, the strip frame 63 contacts and cooperates with the inner diameter of the bearing 110, driving the strip frame 63 to rotate into the strip groove 62, and the extension block 34 slides into the strip frame 63 until the lubrication block 65 can smoothly pass through the bearing 110. Example 2:

[0060] On the basis of the embodiment 1, the removal head 2 is modified so that the present invention can stably install the bearing 110 in the workpiece shaft 100; specifically, refer to Figure 9 The lubrication shaft 61 is detachably mounted on one end of the removal head 2, and one end of the traction shaft 1 is also detachably mounted on the other end of the removal head 2;

[0061] When the bearing 110 needs to be installed in the workpiece shaft 100, first remove the lubrication shaft 61, then remove the removal head 2 from the traction shaft 1, and then rotate the removal head 2 180° to install the end previously connected to the lubrication shaft 61 on one end of the traction shaft 1, and then connect the end previously connected to the traction shaft 1 to the lubrication shaft 61. At this time, press the positioning device 5 tightly against the workpiece shaft 100, and then reversely control the handle 41 to drive the traction sleeve 4 to rotate, so that the traction shaft 1 rotates toward the workpiece shaft 100, so that the sliding block 342 on the removal head 2 pushes the bearing 110 toward the workpiece shaft 100 until it moves to the specified position.

[0062] The implementation principle of the present invention is:

[0063] (1): First, according to the inner diameter of the workpiece shaft 100, appropriately adjust the position of the sliding block 342 on the extension block 34 and the position of the positioning block 543 on the positioning base 541;

[0064] (2): Insert the traction shaft 1 at one end, which is equipped with the lubricating shaft 61 and the removal head 2, deep into the workpiece shaft 100 and rotate the traction shaft 1 so that the lubricating surface 66 can evenly lubricate the inner wall of the workpiece shaft 100 to ensure that the subsequent bearing 110 can be smoothly removed from the workpiece shaft 100;

[0065] (3): Move the positioning head 51 to the interior of the end of the workpiece shaft 100, and then rotate the annular handle 50 to drive the positioning block 543 to press against the inner wall of the workpiece shaft 100 through the elastic block 548. At this time, the traction shaft 1 and the workpiece shaft 100 remain coaxial.

[0066] (4): Rotate the rotating handle 38 to drive the control screw 37 to rotate and drive the control block 31 to move, thereby driving the sliding block 342 to move toward the inner wall of the workpiece shaft 100 until the sliding block 342 passes over the inner diameter of the bearing 110;

[0067] (5): Turn the control handle 41 to drive the traction sleeve 4 to rotate, and under the action of the traction thread 11, drive the traction shaft 1 to drive the removal head 2 to move the positioning device 5. At this time, the sliding block 342 on the removal head 2 can push the bearing 110 in the workpiece shaft 100 to move synchronously until the bearing 110 moves out of the workpiece shaft 100.

[0068] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bearing removal aid, comprising a traction shaft (1), characterized in that: A removal head (2) is installed at one end of the traction shaft (1), and a removal device (3) is provided in the removal head (2) for facilitating the removal of the bearing (110) in the blind hole; a traction sleeve (4) with an internal thread structure is sleeved on the outer side wall of the traction shaft (1), and the traction sleeve (4) is threadedly connected to the traction thread (11) provided on the outer side wall of the traction shaft (1); a positioning device (5) is sleeved on the traction shaft (1) and is rotatably connected to the traction sleeve (4) for positioning the traction sleeve (4) at the outer end of the blind hole; a lubricating device (6) is provided at the end of the removal head (2) facing away from the traction shaft (1) for lubricating the inner side wall of the blind hole; The positioning device (5) comprises a positioning head (51) and a positioning ring (52), wherein the positioning ring (52) is rotatably connected to one end of the traction sleeve (4) facing the removal head (2), and the positioning head (51) is connected to one end of the positioning ring (52) facing away from the traction sleeve (4), and the positioning head (51) and the positioning ring (52) are both slidably sleeved on the traction shaft (1); a plurality of positioning inclined grooves (53) are uniformly provided on one side of the positioning head (51) facing the positioning ring (52), a positioning assembly (54) is slidably arranged in the positioning inclined groove (53), and a connecting block (55) is connected to one end of the positioning assembly (54) facing the positioning ring (52); The outer wall of the positioning ring (52) is provided with a positioning thread (56), and a rotating disk (57) threadedly connected to the positioning thread (56) is sleeved on the outer wall of the positioning ring (52), and an auxiliary disk (58) is provided on the side of the rotating disk (57) that rotates toward the positioning head (51), and a plurality of guide grooves (59) arranged along the radial direction of the auxiliary disk (58) are opened on the circumference of the auxiliary disk (58), and the end of the connecting block (55) away from the positioning assembly (54) is slidably arranged in the guide groove (59), and the end of the rotating disk (57) away from the auxiliary disk (58) is provided with an annular rotating handle (50) for facilitating the control of the rotation of the rotating disk (57); The traction sleeve (4) is provided with a control handle (41) for facilitating the control of the rotation of the traction sleeve (4).

2. The bearing removal aid according to claim 1, characterized in that: The positioning assembly (54) includes a positioning base (541), the positioning base (541) is provided with a matching inclined surface (542) that matches the slope of the positioning inclined groove (53), and the connecting block (55) is connected to the positioning base (541), and the positioning base (541) is provided with a positioning block (543) at one end away from the positioning head (51), and the positioning block (543) is provided with a through internal threaded hole (544) on the side facing the positioning base (541), and the internal threaded hole (544) is internally threadedly connected to a positioning screw (545), and the positioning screw (545) is rotatably connected to the positioning base (541); A plurality of limiting strips (546) are provided on one side of the positioning base (541) facing the positioning block (543), and a limiting groove (547) is provided on the positioning block (543) for sliding engagement with the limiting strips (546).

3. The bearing removal aid according to claim 1, characterized in that: The removal device (3) includes a control block (31), a control cavity (32) is provided at one end of the removal head (2) away from the traction shaft (1), the control block (31) is slidably arranged in the control cavity (32), a plurality of extension holes (33) are uniformly provided on the outer wall of the removal head (2) and penetrate into the control cavity (32), an extension block (34) is slidably arranged in the extension hole (33), an inclined surface (35) is provided at one end of the extension block (34) facing into the control cavity (32), and a control inclined surface (36) is provided on the control block (31) to conflict with the inclined surface (35); The traction shaft (1) is a hollow cylindrical structure, and a control screw (37) is provided inside the structure. The control screw (37) passes through the control cavity (32) and is threadedly connected to the control block (31). The end of the control screw (37) facing away from the removal head (2) passes through the outside of the traction shaft (1) and is connected to a rotating handle (38).

4. The bearing removal aid according to claim 3, characterized in that: An annular groove (21) is provided on the outer side wall of the removal head (2), an elastic ring (22) is provided in the annular groove (21), an arc-shaped concave surface (23) is provided on the end of the extension block (34) away from the removal head (2), and the elastic ring (22) is placed in the arc-shaped concave surface (23) of the extension block (34).

5. The bearing removal aid according to claim 3, characterized in that: The extension block (34) is provided with a step surface (341) on one end away from the control chamber (32) and toward the positioning device (5), and a sliding block (342) sliding along the radial direction of the removal head (2) is provided on the step surface (341), and a through hole (343) is provided on the sliding block (342), and a rotating screw (344) is connected to the internal thread of the through hole (343), and the rotating screw (344) is rotatably connected to the step surface (341), and a guide block (345) is provided on the step surface (341), and a guide hole (346) slidingly matched with the guide block (345) is provided on the sliding block (342).

6. The bearing removal aid according to claim 1, characterized in that: The lubricating device (6) comprises a lubricating shaft (61), one end of which is mounted on the end of the removal head (2) away from the traction shaft (1), and a plurality of strip grooves (62) are evenly arranged on the outer wall of the lubricating shaft (61) in the circumferential direction, and strip sleeves (63) are hingedly connected on both sides of the strip grooves (62), and an extension strip (64) is slidably provided on the end of the strip sleeve (63) away from the strip groove (62), and the extension strip (64) and the strip sleeve (63) are connected. A push spring is connected to drive the extension bar (64) to move in a direction away from the strip sleeve (63); a lubricating block (65) is hinged between the opposite ends of the two extension bars (64); a lubricating surface (66) is provided at the end of the lubricating block (65) away from the lubrication shaft (61); a return spring (67) is connected between the two strip sleeves (63) located in the same strip groove (62) to drive the strip sleeve (63) to rotate in a direction away from the strip groove (62).

7. The bearing removal aid according to claim 2, characterized in that: An elastic block (548) is provided on the side of the positioning block (543) facing away from the positioning base (541), and a plurality of concave and convex structures for increasing friction are provided on the end surface of the elastic block (548) facing the inner wall of the workpiece shaft (100), so as to increase the pressing force between the positioning block (543) and the inner wall of the workpiece shaft (100).

8. The bearing removal aid according to claim 3, characterized in that: A plurality of guide bars are provided on the inner side wall of the control cavity (32), and a guide slot which is slidably matched with the guide bars is provided on the side wall of the control block (31).

9. The bearing removal aid according to claim 6, characterized in that: The lubricating shaft (61) is detachably mounted on one end of the removal head (2), and one end of the traction shaft (1) is also detachably mounted on the other end of the removal head (2).

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