Bearing dismounting tool

Abstract

The utility model relates to the field of dismounting tools, and discloses a bearing dismounting tool, which is used for dismounting a rotating shaft and a bearing sleeved on the rotating shaft, and comprises a base, a connecting plate, a limiting plate and a threaded rod, a limiting channel is arranged on the base, at least three stopping positions are arranged on the limiting channel, and the stopping positions are distributed at intervals in the extending direction of the limiting channel; the connecting plate and the limiting plate are arranged in any two stopping positions respectively, the connecting plate is detachably arranged and provided with a threaded hole, and the limiting plate is provided with a receding groove used for allowing the rotating shaft to penetrate through; the threaded rod is in threaded connection with the threaded hole; when the threaded rod rotates, the threaded rod moves towards the limiting plate relative to the connecting plate, so that the bearing abuts against the side, facing the connecting plate, of the limiting plate, and the rotating shaft is ejected out of an inner ring of the bearing. The bearing dismounting tool provided by the utility model can solve the problem of how to adjust the distance between the connecting plate and the limiting plate.

Description

Technical Field

[0001] The utility model relates to the field of disassembly tools, and particularly relates to a bearing disassembly tool. Background Art

[0002] At present, when the rotating shaft of a motor is assembled at positions such as the outer shell or the frame, it is generally necessary to sleeve a bearing on the rotating shaft. When repairing the motor, it is necessary to disassemble the bearing on the rotating shaft. Since the rotating shaft and the inner ring of the bearing are generally tightly sleeved together by interference fit, it is difficult to disassemble the rotating shaft and the bearing.

[0003] In order to facilitate the disassembly of the motor rotating shaft and the bearing, the prior art provides a bearing disassembly device, which includes a connecting plate, two limiting plates and two stepped rods. A threaded rod is screwed in the middle of the connecting plate. Both ends of the stepped rod have a stepped surface. The two ends of the stepped rod respectively penetrate through one end of the connecting plate and a limiting plate, and are abutted against the connecting plate and the limiting plate through the stepped surface, and then screwed with nuts, so as to fixedly connect the stepped rod with the connecting plate and the limiting plate. A clamping hole is formed between the two limiting plates. The two limiting plates are relatively slidably connected by a screw rod to adjust the aperture of the clamping hole. When in use, the bearing sleeved on the rotating shaft is placed on the limiting plate, the rotating shaft is downwardly penetrated through the clamping hole, the nuts are screwed on both ends of the screw rod to fix the aperture of the clamping hole, and finally, the threaded rod is rotated to press the threaded rod downward, and the rotating shaft can be pressed out from the bearing.

[0004] The connecting plate and the limiting plate of the bearing disassembly device are relatively fixed by the stepped rod, and the distance between the two cannot be adjusted. If the length of the rotating shaft is greater than the distance between the connecting plate and the limiting plate, during the process of downwardly penetrating the rotating shaft through the clamping hole between the connecting plate and the limiting plate, the rotating shaft is likely to interfere with the connecting plate, resulting in problems such as scratches on the surface of the rotating shaft. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The utility model provides a bearing disassembly tool, which can at least solve the technical problem of how to adjust the distance between the connecting plate and the limiting plate.

[0007] (2) Technical Solutions

[0008] To solve the above technical problems, the utility model provides the following technical solutions: a bearing disassembly tool for disassembling a rotating shaft and a bearing sleeved on the rotating shaft, the bearing disassembly tool includes:

[0009] A base, on which a limiting channel is provided, and at least three docking positions are provided on the limiting channel, and each docking position is spaced apart along the extending direction of the limiting channel;

[0010] A connecting plate and a limiting plate are respectively arranged in any two docking positions. The connecting plate is detachably arranged and is provided with threaded holes, and the limiting plate is provided with a relief groove for the rotating shaft to penetrate through.

[0011] A threaded rod is screwed into the threaded hole.

[0012] Wherein, when the threaded rod rotates, the threaded rod displaces relative to the connecting plate towards the limiting plate, so that the bearing abuts against the side of the limiting plate facing the connecting plate, and the rotating shaft is pushed out from the inner ring of the bearing.

[0013] Further, the aforementioned relief groove is V-shaped or inverted trapezoidal, and the notch of the relief groove is arranged upwards for positioning the rotating shaft.

[0014] Further, the top of the aforementioned limiting channel is open. At least four ribs are symmetrically fixed on the left and right inner walls of the limiting channel. A slot is formed between adjacent pairs of ribs, and the slot is configured as a docking position for inserting the connecting plate or the limiting plate.

[0015] Further, the top of the aforementioned limiting channel is open. At least three plugging recesses are symmetrically formed on the two inner walls of the limiting channel. A slot is formed between two symmetric plugging recesses, and the slot is configured as a docking position for inserting the connecting plate or the limiting plate.

[0016] Further, the aforementioned base includes a bottom plate and two side plates. The two side plates are detachably arranged on both sides of the bottom plate, and a limiting channel is formed between the side plates and the bottom plate. The ribs or the plugging recesses are arranged on the side plates.

[0017] Further, the number of the aforementioned connecting plates is at least two. When the connecting plates are in the limiting channel, the thread rotation directions of the threaded holes of each connecting plate are the same.

[0018] Further, a tapered hole is provided at the free end of the aforementioned rotating shaft, and a tapered convex portion is provided at one end of the threaded rod facing the limiting plate. The tapered convex portion is used to contact the bottom of the tapered hole and guide the threaded rod and the rotating shaft to be coaxial.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, a bearing disassembly tool provided by the present utility model has the following beneficial effects:

[0021] When the bearing removal tool provided by the utility model is used, the connecting plate and the limit plate are first respectively arranged in any two parking positions of the base, then the bearing is placed on the side of the limit plate facing the connecting plate, and the rotating shaft passes through the give way groove, and then force is applied to rotate the threaded rod to make the threaded rod move relative to the connecting plate toward the limit plate. During the displacement of the threaded rod, it is tightly abutted against the rotating shaft, so that the bearing and the side of the limit plate facing the connecting plate are tightly abutted and cannot move with the rotating shaft, and then the rotating shaft is driven to move relative to the inner ring of the bearing, thereby ejecting the rotating shaft from the inner ring of the bearing; wherein, the connecting plate of the bearing removal tool can be removed from the current parking position and installed in any other parking position, so that the spacing between the connecting plate and the limit plate can be adjusted, so that the rotating shaft has sufficient placement space, effectively avoiding interference between the rotating shaft and the connecting plate, resulting in scratches on the surface of the rotating shaft, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the bearing removal tool in the embodiment in use;

[0023] Figure 2 A top view of the bearing removal tool in the embodiment in use;

[0024] Figure 3 It is a left side view of the bearing removal tool in the embodiment;

[0025] Figure 4 4 is a cross-sectional view of the base in the embodiment.

[0026] Figure Number:

[0027] 1. Base; 11. Limiting channel; 12. Parking position; 13. Ribs; 14. Bottom plate; 15. Side plate;

[0028] 2. Connecting plate; 21. Threaded hole; 22. Nut;

[0029] 3. Limiting plate; 31. Giving way groove;

[0030] 4. threaded rod; 41. conical convex portion;

[0031] 5. rotating shaft; 51. tapered hole;

[0032] 6. Bearings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] The utility model provides a bearing disassembly tool, which is used for disassembling a rotating shaft 5 and a bearing 6 sleeved on the rotating shaft 5, and solves the problem of how to adjust the distance between a connecting plate 2 and a limiting plate 3.

[0035] See also Figure 1 and Figure 2 As shown, Figure 1 This is a three-dimensional diagram of the bearing removal tool in use in the embodiment. Figure 2 It is a top view of the bearing removal tool in the embodiment in the use state. The bearing removal tool includes a base 1, a connecting plate 2, a limiting plate 3 and a threaded rod 4.

[0036] The base 1 is provided with a limiting channel 11 , and the limiting channel 11 is provided with at least three parking positions 12 , and the parking positions 12 are distributed at intervals along the extension direction of the limiting channel 11 .

[0037] The connecting plate 2 is detachably arranged in any one of the parking positions 12 of the base 1, and the limiting plate 3 is arranged in any one of the parking positions 12 of the base 1, wherein the connecting plate 2 and the limiting plate 3 are located in two different parking positions 12. The connecting plate 2 has a threaded hole 21, and the limiting plate 3 has a clearance groove 31 for the rotation shaft 5 to pass through.

[0038] The threaded rod 4 is threadedly connected to the threaded hole 21 of the connecting plate 2 .

[0039] When the threaded rod 4 rotates, the threaded rod 4 moves relative to the connecting plate 2 toward the limiting plate 3 , so that the bearing 6 abuts against the side of the limiting plate 3 facing the connecting plate 2 , and the rotating shaft 5 is ejected from the inner ring of the bearing 6 .

[0040] When the bearing removal tool of the above technical solution is used, the connecting plate 2 and the limiting plate 3 are first respectively arranged in any two parking positions 12 of the base 1, and then the rotating shaft 5 passes through the clearance groove 31, so that the bearing 6 is placed on the side of the limiting plate 3 facing the connecting plate 2 (or the rotating shaft 5 can be first passed through the clearance groove 31, and then the connecting plate 2 and the limiting plate 3 are respectively arranged in any two parking positions 12 of the base 1; or the limiting plate 3 can be first arranged at any one of the parking positions 12 of the base 1 The tool is used to disassemble the bearing 5 from the inner ring of the bearing 6, and then the connecting plate 2 is disassembled from the inner ring of the bearing 6. The connecting plate 2 of the bearing disassembly tool can be disassembled from the current parking position 12 and installed in any other parking position 12, so that the distance between the connecting plate 2 and the limiting plate 3 can be adjusted according to the actual length of the rotating shaft 5 and the actual position of the bearing 6 on the rotating shaft 5, so that the rotating shaft 5 has enough space to be placed, and the rotating shaft 5 can be effectively prevented from interfering with the connecting plate 2, resulting in the occurrence of surface damage to the rotating shaft 5.

[0041] The above-mentioned clearance groove 31 can be a through hole, or an open groove with two ends passing through. Figure 1 As shown, the clearance groove 31 in the figure is an open groove penetrating at both ends.

[0042] The above-mentioned limit plate 3 can be connected to any one of the parking positions 12 of the base 1 by a fixed connection method such as integral connection or welding, or can be connected to any one of the parking positions 12 of the base 1 by a detachable method such as screw connection or plug connection, or can be connected to the limit channel 11 by sliding, and then detachably fixed to any one of the parking positions 12 of the base 1 by a method such as snap connection or screw connection. Among them, whether the position of the limit plate 3 is detachable or not, it does not affect the function of disassembling and assembling the connecting plate 2 to adjust the distance between the connecting plate 2 and the limit plate 3. However, if the clearance groove 31 is a through hole, at this time, the position of the limit plate 3 is detachable, then the rotating shaft 5 can be first passed through the clearance groove 31 and installed on the limit plate 3, and then the limit plate 3 can be connected to the base 1, so that the rotating shaft 5 can be easily installed.

[0043] The above-mentioned connecting plate 2 can be directly connected to any one of the stop positions 12 of the base 1 that is different from the limit plate 3 by a detachable manner such as plugging or screwing, so that the distance between the connecting plate 2 and the limit plate 3 can be adjusted, or the above-mentioned connecting plate 2 and the limit plate 3 can be connected by sliding in the limit channel 11, and then detachably fixed in any two different stop positions 12 of the base 1 by means of snap-on or screwing.

[0044] Threaded holes 21 can be directly formed in the above-mentioned connecting plate 2. Hard plates such as wooden boards that are easy to process threaded holes 21 and are not prone to deformation can be used. Alternatively, a nut 22 can be fixedly connected to one side of the connecting plate 2 by means of bonding or welding, etc., and a relief hole communicating with the threaded hole 21 in position is formed in the connecting plate 2, and the connecting plate 2 can be made of a hard plate such as a steel plate that is not prone to deformation. The above-mentioned limiting plate 3 can be made of a hard plate such as a steel plate that is not prone to deformation.

[0045] A handle can be installed at one end of the above-mentioned threaded rod 4 away from the limiting plate 3 to facilitate applying force to rotate the threaded rod 4.

[0046] Refer to Figure 1 and Figure 3 as shown in Figure 3 is the left view of the bearing disassembly tool in the embodiment. In one implementation of the relief groove 31, the relief groove 31 is V-shaped or inverted trapezoidal, and the opening of the relief groove 31 is open upward for positioning the rotating shaft 5. In this embodiment, the maximum diameter of the opening of the relief groove 31 is greater than the diameter of the largest rotating shaft of the existing small motors. In this way, the rotating shaft 5 can be directly placed on the limiting plate 3 from the opening of the relief groove 31, and the rotating shaft 5 is made to pass through the relief groove 31, facilitating the installation of the rotating shaft 5 and the limiting plate 3. After the rotating shaft 5 is placed in the relief groove 31, the V-shaped or inverted trapezoidal relief groove 31 can automatically position the rotating shaft 5, restricting the left-right position and the up-down position of the rotating shaft 5, and can also be applicable to rotating shafts 5 and bearings 6 of different diameters, greatly improving the applicable range of this bearing disassembly tool. It can be seen that compared with the existing bearing disassembly tools, the bearing disassembly tool provided in this embodiment can automatically position the rotating shaft 5 without adjusting the size of the relief groove 31 to match rotating shafts 5 of different diameters, effectively improving the usability of this bearing disassembly tool.

[0047] Refer to Figure 1 and Figure 3As shown, in one embodiment of the base 1, the top of the limiting channel 11 is open. At least four ribs 13 are symmetrically and fixedly connected to the inner walls on the left and right sides of the limiting channel 11 by means of integral connection or welding. A slot is formed between adjacent pairs of ribs 13, and the slot is configured as a docking position 12 for inserting the connecting plate 2 or the limiting plate 3. Thus, when using this bearing disassembly tool, the connecting plate 2 and the limiting plate 3 are respectively inserted into two different slots from above the limiting channel 11. The ribs 13 of the slots where they are located can cooperate with each other to limit the positions of the connecting plate 2 and the limiting plate 3 in the extending direction of the limiting channel 11, thereby limiting the distance between the connecting plate 2 and the limiting plate 3 in the extending direction of the limiting channel 11. The ribs 13 can also play a role of separating and providing leverage, so that the threaded rod 4 can easily push the rotating shaft 5 out of the inner ring of the bearing 6. It can be seen that both the connecting plate 2 and the limiting plate 3 of this bearing disassembly tool can be detachably arranged in the docking position 12 of the base 1 by inserting into the slots. This detachable method is simple and easy to operate, which is convenient for the user to quickly adjust the distance between the connecting plate 2 and the limiting plate 3, and can also facilitate the free disassembly and replacement of connecting plates 2 and limiting plates 3 of different specifications. Furthermore, it is convenient to install the rotating shaft 5 and the limiting plate 3, as well as the threaded rod 4 and the connecting plate 2, greatly improving the installation efficiency of this bearing disassembly tool.

[0048] In another embodiment of the base 1, the top of the limiting channel 11 is open. At least three insertion recesses are symmetrically formed on the inner walls on both sides of the limiting channel 11. A slot is formed between two symmetric insertion recesses, and the slot is configured as a docking position 12 for inserting the connecting plate 2 or the limiting plate 3. Thus, the formation method of the slot of this base 1 is different from that of the previous embodiment, but the usage methods and effects of these two embodiments are the same, both of which can facilitate the user to quickly adjust the distance between the connecting plate 2 and the limiting plate 3, and facilitate the free replacement of connecting plates 2 and limiting plates 3 of different specifications.

[0049] Refer to Figure 1 and Figure 3 As shown, on the basis that the above-mentioned connecting plate 2 and limiting plate 3 are respectively detachably arranged in two docking positions 12 by inserting into the slots, if the relief groove 31 is V-shaped or inverted trapezoidal, the axial center heights of rotating shafts 5 with different diameters placed in the relief groove 31 are different. The height of the above-mentioned connecting plate 2 can be less than the depth of the slot. Thus, the connecting plate 2 can move up and down in the slot along with the threaded rod 4 to adjust the position of the threaded rod 4 so that the threaded rod 4 can be coaxial with rotating shafts 5 of different diameters.

[0050] Refer to Figure 2 、 Figure 3 and Figure 4 As shown, Figure 4FIG. 0 is a cross-sectional view of the base in the embodiment. On the basis that the above-mentioned connecting plate 2 and the limiting plate 3 are respectively detachably arranged in the two docking positions 12 by inserting into the slots, the base 1 includes a bottom plate 14 and two side plates 15. The two side plates 15 are detachably arranged on both sides of the bottom plate 14 by screwing or clamping, etc., and a limiting channel 11 is formed between the side plates 15 and the bottom plate 14. The rib 13 or the inserting recess is arranged on the side plate 15 by integral connection or welding, etc. In this way, both the bottom plate 14 and the side plates 15 can be freely disassembled and replaced with different thicknesses according to the actual disassembly requirements of the bearing 6, so as to ensure that the base 1 can withstand the pressure on the base 1 during the disassembly process of the bearing 6.

[0051] Both the above-mentioned bottom plate 14 and the two side plates 15 can be made of hard plates that are not easily deformed, such as wooden plates or steel plates. The ribs 13 or the inserting recesses on the different side plates 15 can also be set to different sizes to meet the actual disassembly requirements of the bearing 6.

[0052] Refer to Figure 2 As shown, in an embodiment of the connecting plate 2, the number of the connecting plates 2 is at least two. Among them, when the connecting plate 2 is in the limiting channel 11, the rotation directions of the threaded holes 21 of the connecting plates 2 are the same. In this way, the threaded rod 4 can be screwed with all the connecting plates 2 in the limiting channel 11 at the same time. The more the number of the connecting plates 2, the more the screwing area with the threaded rod 4, and the more stable the process of the threaded rod 4 pushing the rotating shaft 5 and the higher the structural strength of the connecting plate 2 can be improved.

[0053] Refer to Figure 2 As shown, in an embodiment of the threaded rod 4, the free end of the rotating shaft 5 and the bearing 6 are both located on the side of the limiting plate 3 facing the connecting plate 2. The free end of the rotating shaft 5 has a tapered hole 51. One end of the threaded rod 4 facing the limiting plate 3 is provided with a tapered protrusion 41 by integral connection or welding, etc. The tapered protrusion 41 is used to contact the bottom of the tapered hole 51 and guide the threaded rod 4 and the rotating shaft 5 to be coaxial. In this way, when disassembling the rotating shaft 5 and the bearing 6, by the contact between the tapered protrusion 41 and the bottom of the tapered hole 51, damage to the end face or surface of the rotating shaft 5 by the threaded rod 4 can be avoided, and the threaded rod 4 and the rotating shaft 5 can be quickly coaxially guided, so that the threaded rod 4 can apply force to the center of the rotating shaft 5, and the force application is more uniform and labor-saving.

[0054] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing removal tool, used for removing a rotating shaft and a bearing sleeved on the rotating shaft, characterized in that: include: A base, wherein a limiting channel is provided on the base, and at least three parking positions are provided on the limiting channel, and the parking positions are distributed at intervals along the extension direction of the limiting channel; A connecting plate and a limiting plate are respectively arranged in any two of the parking positions, the connecting plate is detachably arranged and is provided with a threaded hole, and the limiting plate is provided with a clearance groove for the rotating shaft to pass through; A threaded rod, threadedly connected to the threaded hole; When the threaded rod rotates, the threaded rod is displaced relative to the connecting plate toward the limiting plate, so that the bearing abuts against a side of the limiting plate facing the connecting plate, and the rotating shaft is ejected from the inner ring of the bearing.

2. A bearing removal tool according to claim 1, characterized in that: The clearance groove is V-shaped or inverted trapezoidal, and the notch of the clearance groove is arranged upwards for positioning the rotating shaft.

3. A bearing removal tool according to claim 1, characterized in that: The top of the limiting channel is open, and at least four ribs are symmetrically fixed on the inner walls on the left and right sides of the limiting channel. A slot is formed between two adjacent pairs of ribs, and the slot is configured as the parking position for the connecting plate or the limiting plate to be inserted.

4. A bearing removal tool according to claim 1, characterized in that: The top of the limiting channel is open, and at least three plug-in recesses are symmetrically provided on the inner walls on both sides of the limiting channel. A slot is formed between the two symmetrical plug-in recesses, and the slot is configured as the parking position for the connection plate or the limiting plate to be inserted.

5. A bearing removal tool according to claim 3, characterized in that: The base comprises a bottom plate and two side plates, the two side plates are detachably arranged on both sides of the bottom plate, and the limiting channel is formed between the two side plates and the bottom plate, and the ribs are arranged on the side plates.

6. A bearing removal tool according to claim 1, characterized in that: The number of the connecting plates is at least two, wherein when the connecting plates are in the limiting channel, the threaded holes of the connecting plates have the same rotation direction.

7. A bearing removal tool according to claim 1, characterized in that: A conical hole is provided at the free end of the rotating shaft, and a conical convex portion is provided at one end of the threaded rod facing the limiting plate, wherein the conical convex portion is used to contact the bottom of the conical hole and guide the threaded rod and the rotating shaft to be coaxial.

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