Oil seal disassembling and assembling tool

Abstract

The utility model discloses an oil seal dismounting tool which comprises a tool main body, a first driving piece and a second driving piece, the tool main body comprises a positioning part matched with a shaft hole, a first threaded section is arranged on the peripheral surface of the tool main body, the tool main body is provided with a clamping jaw which is arranged in a telescopic mode in the radial direction of the tool main body, and when the clamping jaw stretches out, the first threaded section is connected with the second threaded section. The clamping jaw is matched with the inner end face of the oil seal, the first driving part is detachably arranged on the outer side of the tool body in a sleeving mode, a second threaded section is arranged on the inner circumferential face of the first driving part, and the second threaded section is matched with the first threaded section so that the tool body can move relative to the first driving part and pull the oil seal out of the installation position. The second driving piece is detachably arranged on the outer side of the tool body in a sleeving mode and can move in the axis direction of the tool body, and the second driving piece is matched with the outer end face of the oil seal to extrude the oil seal to the installation position. And the installation precision and the sealing effect of the oil seal are ensured.

Description

Technical Field

[0001] The utility model relates to a mechanical assembly tool, in particular to an oil seal disassembly and assembly tool. Background Art

[0002] In order to ensure the sealing of lubricating oil in mechanical structures such as the reducer or transmission of a vehicle, an oil seal needs to be installed on the output shaft and / or input shaft of the mechanical structure. When the mechanical structure installed with the oil seal needs to be inspected, such as when analyzing the cause of a fault, the oil seal needs to be removed from the mechanical structure. However, since the oil seal is easily damaged during the removal process, in related technologies, it is usually necessary to remove the housing of the mechanical structure in order to achieve non-destructive removal of the oil seal. The complicated disassembly steps are likely to cause more faults and problems in the mechanical structure. Directly removing the oil seal will cause damage to the oil seal. A damaged oil seal will make it impossible to reproduce the problem and affect the accuracy of the analysis results. When reinstalling the oil seal, it is also impossible to ensure that all parts of the oil seal are in the installation position. The installation accuracy is poor, and the oil seal is also easily damaged during the installation process. The sealing of the oil seal cannot be guaranteed, affecting the reliability of the mechanical structure after repair. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention proposes an oil seal disassembly and assembly tool that can achieve non-destructive disassembly and assembly of the oil seal and ensure the installation accuracy and sealing effect of the oil seal.

[0004] The oil seal disassembly and assembly tool of the utility model comprises: a tool body, the tool body comprising a positioning portion that cooperates with the shaft hole, a first threaded section being provided on the outer peripheral surface of the tool body, the tool body having a claw that is retractably arranged along the radial direction of the tool body, and when the claw is extended, the claw cooperates with the inner end surface of the oil seal;

[0005] a first driving member, the first driving member being detachably sleeved on the outside of the tooling body, the first driving member having a second threaded section on its inner circumference, the second threaded section cooperating with the first threaded section to move the tooling body relative to the first driving member and pull the oil seal out of the installation position;

[0006] The second driving member is detachably mounted on the outside of the tooling body and can move along the axis of the tooling body. The second driving member cooperates with the outer end surface of the oil seal to squeeze the oil seal to the installation position.

[0007] According to the oil seal disassembly and assembly tool of the utility model, the oil seal can be disassembled and assembled without damage, and the installation accuracy and sealing effect of the oil seal can be ensured.

[0008] According to an embodiment of the present invention, the clamping claws include a plurality of clamping claws, which are arranged along the circumference of the tool body and on the same radial cross-section of the tool body.

[0009] According to one embodiment of the present utility model, the tool body includes: an outer sleeve, a through hole is formed on the side wall of the outer sleeve, and an extension direction of the through hole extends along the radial direction of the tool body;

[0010] The inner sleeve defines a first space between the bottom wall of the outer sleeve and the bottom wall of the inner sleeve, and the clamping claw is movably disposed in the first space through the through hole.

[0011] According to one embodiment of the present invention, a guide groove is provided on the bottom wall of the inner sleeve and is inclined in the radial direction of the tool body. A matching protrusion is provided on the claw, and the guide groove cooperates with the matching protrusion.

[0012] When the inner sleeve rotates relative to the outer sleeve in a first direction, the claw extends out of the first space; when the inner sleeve rotates relative to the outer sleeve in a second direction opposite to the first direction, the claw retracts into the first space.

[0013] According to one embodiment of the present invention, an operating portion for rotating the inner sleeve relative to the outer sleeve is provided at the outer end of the inner sleeve, and the operating portion is provided with a graspable operating protrusion.

[0014] According to one embodiment of the present invention, the first driving member includes a driving nut and a limiting member, the limiting member is clamped between the driving nut and the housing, and a second threaded section is provided on the inner circumference of the driving nut.

[0015] According to an embodiment of the present invention, the limiting member defines a second space, the second space has an opening toward the head end of the tool body, and the oil seal moves to the second space through the opening.

[0016] According to one embodiment of the present invention, the second driving member has an extrusion portion suitable for extruding the oil seal, the extrusion portion cooperates with the outer end surface of the oil seal, and the extrusion portion is arranged along the circumference of the tooling body and on the same radial cross-section of the tooling body.

[0017] According to an embodiment of the present invention, the second driving member has a limiting portion, and when the extrusion portion squeezes the oil seal to the installation position, the limiting portion cooperates with the outer end surface of the casing.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the oil seal being located at an initial position during the oil seal extrusion process of the oil seal disassembly and assembly tool according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the oil seal disassembly and assembly tool of the embodiment of the utility model squeezing the oil seal to the installation position;

[0022] Figure 3 This is a schematic diagram of the oil seal in the installation position during the oil seal disassembly and assembly process of the oil seal disassembly and assembly tool according to the embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the oil seal disassembly tool of the embodiment of the utility model disassembling the oil seal into the second space;

[0024] Figure 5 This is a structural diagram of the oil seal disassembly tooling of the embodiment of the utility model in a state where the oil seal is disassembled;

[0025] Figure 6 This is a structural diagram of the oil seal disassembly tooling of the embodiment of the utility model in a state where the oil seal is disassembled;

[0026] Figure 7 This is a cross-sectional view of the oil seal disassembly tool of the embodiment of the utility model in the state of disassembling the oil seal;

[0027] Figure 8 This is a structural schematic diagram of the oil seal disassembly and assembly tool of the embodiment of the utility model at one end of the operating part in the state of disassembling the oil seal;

[0028] Figure 9 This is a structural diagram of the oil seal disassembly and assembly tool of the embodiment of the utility model in the state of installing the oil seal;

[0029] Figure 10 This is a cross-sectional view of the oil seal disassembly and assembly tool of the embodiment of the utility model in the state of installing the oil seal;

[0030] Figure 11 This is a schematic structural diagram of the inner sleeve of an embodiment of the utility model;

[0031] Figure 12 This is a schematic structural diagram of the inner sleeve at one end of the operating portion of an embodiment of the present utility model;

[0032] Figure 13 This is a schematic structural diagram of the inner sleeve of an embodiment of the utility model;

[0033] Figure 14 This is a partial structural diagram of the oil seal disassembly and assembly tooling according to an embodiment of the present utility model;

[0034] Figure 15 This is a schematic structural diagram of the clamping claws of an embodiment of the present utility model;

[0035] Figure 16 This is a partial structural diagram of the oil seal disassembly and assembly tooling according to an embodiment of the present utility model;

[0036] Figure 17 This is a partial structural diagram of the oil seal disassembly and assembly tooling according to an embodiment of the present utility model;

[0037] Figure 18 This is a schematic structural diagram of the tooling body of an embodiment of the present utility model;

[0038] Figure 19 It is a structural schematic diagram of the tooling body at one end of the operating portion of an embodiment of the present utility model.

[0039] Reference numerals:

[0040] Oil seal disassembly and assembly tool 100, tool body 1, positioning part 11, outer sleeve 12, first threaded section 121, through hole 122, inner sleeve 13, guide groove 131, operating part 132, operating protrusion 1321, claw 14, mating protrusion 141, first space 140, first driving member 2, drive nut 21, second threaded section 211, limiting member 22, second space 220, opening 221, second driving member 3, extrusion part 31, third threaded section 32, limiting part 33, oil seal 200, differential housing 300, shaft hole 301, housing 400. DETAILED DESCRIPTION

[0041] This application is based on the inventor's discovery and understanding of the following facts and problems:

[0042] In order to ensure the sealing of lubricating oil in mechanical structures such as the reducer or transmission of a vehicle, an oil seal needs to be installed on the output shaft and / or input shaft of the mechanical structure. When the mechanical structure installed with the oil seal needs to be inspected, such as when analyzing the cause of a fault, the oil seal needs to be removed from the mechanical structure. However, since the oil seal is easily damaged during the removal process, in related technologies, it is usually necessary to remove the housing of the mechanical structure in order to achieve non-destructive removal of the oil seal. The complicated disassembly steps are likely to cause more faults and problems in the mechanical structure. Directly removing the oil seal will cause damage to the oil seal. A damaged oil seal will make it impossible to reproduce the problem and affect the accuracy of the analysis results. When reinstalling the oil seal, it is also impossible to ensure that all parts of the oil seal are in the installation position. The installation accuracy is poor, and the oil seal is also easily damaged during the installation process. The sealing of the oil seal cannot be guaranteed, affecting the reliability of the mechanical structure after repair.

[0043] To this end, the embodiment of the present invention designs an oil seal disassembly and assembly tool 100 that can realize offline non-destructive disassembly of the oil seal 200 and offline accurate installation of the oil seal 200. Therefore, when it is necessary to detect the mechanical structure on which the oil seal 200 is installed, such as when analyzing the cause of a fault, the oil seal disassembly and assembly tool 100 can be used to disassemble the oil seal 200 from the mechanical structure without loss. During the process, there is no need to disassemble the housing of the mechanical structure, which reduces the difficulty of disassembling the oil seal 200, avoids damage to the oil seal 200 that causes the problem to be unable to be reproduced, and ensures the accuracy of the analysis results. When reinstalling the oil seal 200, the oil seal 200 can be evenly squeezed to the installation position, ensuring the installation accuracy of the oil seal 200 and the sealing effect of the oil seal 200, and avoiding deformation and damage of the oil seal 200 during the disassembly and assembly process.

[0044] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the terms "inner", "outer", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or mutual communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0048] The oil seal disassembly and assembly tool 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0049] It should be noted that the oil seal disassembly and assembly tool 100 of the embodiment of the present invention can be used to disassemble and assemble the oil seals 200 at the output shaft or / and input shaft of various mechanical structures (for example, the oil seals 200 at the input shaft and the oil seals 200 at the output shaft of a speed reducer or differential). The following is an example of the disassembly and assembly process of the oil seal 200 at the output shaft of a vehicle differential. Figures 1-19 The following describes the process of disassembling and assembling the oil seal 200 using the oil seal disassembling and assembling tool 100.

[0050] like Figures 1-4 As shown, the mechanical structure includes a differential housing 300 with a shaft hole 301, the shaft hole 301 cooperates with the output shaft, and a housing 400 that defines a mounting position for an oil seal coaxial with the shaft hole.

[0051] like Figures 1-19 As shown, the oil seal disassembly and assembly tool 100 according to the embodiment of the present utility model includes: a tool body 1, a first driving member 2 and a second driving member 3.

[0052] The tooling body 1 primarily serves to position and guide the oil seal 200 during the removal and installation process. The tooling body 1 includes a positioning portion 11 that cooperates with the shaft hole 301 of the mechanical structure. When the positioning portion 11 cooperates with the shaft hole 301, the tooling body 1 is coaxially arranged with the oil seal 200 at the installation position. During the removal and installation process of the oil seal 200, the position of the oil seal 200 can be positioned. Furthermore, during the removal or installation process of the oil seal 200, the tooling body 1 can ensure that the oil seal 200 stably moves along the axial direction of the tooling body 1, that is, the axial direction of the oil seal 200. The various circumferential parts of the oil seal 200 move evenly and are evenly stressed. The oil seal 200 will not be deformed or damaged due to compression of part of its structure due to deflection, thus preventing the oil seal 200 from being damaged or deformed during the removal and installation process.

[0053] The first driving member 2 and the second driving member 3 are detachably arranged on the tooling body 1. During the disassembly or installation of the oil seal 200, one of the first driving member 2 and the second driving member 3 needs to be arranged on the tooling body 1, and the other needs to be removed from the tooling body 1. The first driving member 2 and the second driving member 3 are not arranged on the tooling body 1 at the same time during the disassembly and installation of the oil seal 200 to avoid mutual interference.

[0054] The inner end surface of the oil seal 200 is the end surface of the oil seal 200 facing the differential output shaft, and the outer end surface of the oil seal 200 is the end surface of the oil seal 200 facing away from the differential output shaft.

[0055] During the disassembly of the oil seal 200 , the first driving member 2 needs to be arranged on the tool body 1 . At this time, the oil seal disassembly tool 100 is in a state where the oil seal 200 can be disassembled.

[0056] Specifically, the tooling body 1 has a claw 14 that can be retracted radially along the tooling body 1. When the claw 14 is extended, the claw 14 cooperates with the inner end surface of the oil seal 200. The first driving member 2 is detachably mounted on the outside of the tooling body 1. A first threaded segment 121 is provided on the outer circumference of the tooling body 1, and a second threaded segment 211 is provided on the inner circumference of the first driving member 2. The second threaded segment 211 cooperates with the first threaded segment 121 to move the tooling body 1 relative to the first driving member 2 and pull the oil seal 200 out of the installation position.

[0057] like Figure 3 and Figure 4 As shown, when removing the oil seal 200, the first driving member 2 is first sleeved on the outside of the tooling body 1, and is sleeved on the end of the tooling body 1 away from the positioning portion 11, so as to avoid the setting of the first driving member 2 affecting the positioning of the oil seal disassembly and assembly tool 100 before removing the oil seal 200. At this time, the second threaded segment 211 provided on the inner circumference of the first driving member 2 cooperates with the first threaded segment 121 provided on the outer circumference of the tooling body 1. Since the tooling body 1 and the first driving member 2 are threadedly matched, when the first driving member 2 rotates relative to the tooling body 1, the first driving member 2 and the tooling body 1 move relative to each other in the axial direction of the tooling body 1.

[0058] Furthermore, the retractable claw 14 of the tooling body 1 is retracted within the tooling body 1 to prevent it from interfering with the tooling body 1's ability to pass through the oil seal 200 at the installation location. The tooling body 1 is then moved axially along the shaft hole 301. During this process, the tooling body 1 passes through the oil seal 200 at the installation location, and the positioning portion 11 of the tooling body 1 engages with the shaft hole 301 to achieve positioning. At this point, the oil seal 200 is coaxially sleeved on the outside of the tooling body 1, between the claw 14 and the first drive portion. The claw 14 is then extended from the inside of the tooling body 1 to the outside of the tooling body 1, whereupon the claw 14 engages with the inner end face of the oil seal 200.

[0059] Further, the first driving member 2 is rotated, and the first driving member 2 rotates relative to the tooling body 1. Since the tooling body 1 and the first driving member 2 are threadedly matched, the first driving member 2 moves along the axial direction of the tooling body 1 toward the direction close to the differential output shaft until it moves to the point where the first driving member 2 is matched with the mechanical structure. The mechanical structure limits the first driving member 2 on one side of the axial direction of the first driving member 2.

[0060] Since the first driving member 2 is limited by the mechanical structure, the first driving member 2 cannot continue to move along the axial direction of the tooling body 1 toward the direction close to the differential output shaft, and the first driving member 2 continues to rotate. Since the tooling body 1 and the first driving member 2 are threadedly matched, the tooling body 1 moves along the axial direction of the tooling body 1 toward the direction away from the differential output shaft. Since the claw 14 provided on the tooling body 1 is matched with the inner end face of the oil seal 200, when the tooling body 1 moves in the direction away from the differential output shaft, the claw 14 will simultaneously drive the oil seal 200 to move in the direction away from the differential output shaft, thereby evenly moving the oil seal 200 from the installation position to outside the installation position.

[0061] Since the process of the tooling body 1 driving the oil seal 200 to move is guided by the first driving member 2, the position of the first driving member 2 is fixed, and the tooling body 1 always moves along the axial direction of the differential output shaft, ensuring that the tooling body 1 is not deflected during the movement process, avoiding the oil seal 200 from being damaged due to uneven force during the disassembly process, and realizing non-destructive disassembly of the oil seal 200.

[0062] During the installation of the oil seal 200 , the second driving member 3 needs to be arranged on the tool body 1 . At this time, the oil seal disassembly and assembly tool 100 is in a state where the oil seal 200 can be installed.

[0063] Specifically, the second driving member 3 is detachably mounted on the outside of the tooling body 1 and can move along the axis of the tooling body 1 . The second driving member 3 cooperates with the outer end surface of the oil seal 200 to squeeze the oil seal 200 to the installation position.

[0064] like Figure 1 and Figure 2 As shown, when installing the oil seal 200, the oil seal 200 can be coaxially sleeved on the outside of the tooling body 1, and sleeved between the second driving member 3 and the positioning portion 11. The positioning portion 11 of the tooling body 1 cooperates with the shaft hole 301 to achieve positioning, so that the second driving member 3 is close to the outer end surface of the oil seal 200 and cooperates with the outer end surface of the oil seal 200. The oil seal 200 is aligned with the shaft hole 301 and then aligned with the installation position of the oil seal 200.

[0065] Furthermore, the second driving member 3 is moved so as to move along the axial direction of the tooling body 1 and move toward the installation position of the oil seal 200. During the movement of the second driving member 3, the second driving member 3 evenly squeezes the oil seal 200 and drives the oil seal 200 to be squeezed to the installation position. After the oil seal 200 is in the installation position, it can ensure the sealing of the lubricating oil inside the mechanical structure.

[0066] Since the movement of the oil seal 200 driven by the second driving member 3 is guided by the tooling body 1, the position of the tooling body 1 is fixed, and the second driving member 3 always moves along the axial direction of the differential output shaft, ensuring that the second driving member 3 is not deflected during the movement process, avoiding damage to the oil seal 200 due to uneven force during the installation process, and realizing lossless installation of the oil seal 200.

[0067] After the oil seal 200 is installed in the installation position, the oil seal disassembly and assembly tool 100 is moved as a whole, so that it moves along the axial direction of the shaft hole 301, so that the positioning part 11 of the tool body 1 is disengaged from the shaft hole 301 and the tool body 1 is separated from the oil seal 200. The retractable claws 14 of the tool body 1 are always retracted in the tool body 1 during the installation of the oil seal 200 to prevent the claws 14 from affecting the separation of the tool body 1 from the oil seal 200 at the installation position, and to prevent the tool body 1 from scratching the oil seal 200 during the movement, thereby affecting the installation stability of the oil seal 200.

[0068] According to the oil seal disassembly and assembly tool 100 of the present invention, the oil seal disassembly and assembly tool 100 has a simple structure and low production cost. It can realize non-destructive disassembly and installation of the oil seal 200 based on the same tool body 1, without affecting the mechanical structure during the process, and can also ensure the installation accuracy of the oil seal 200 and the sealing effect of the oil seal 200.

[0069] like Figure 14-16 As shown, the claws 14 include a plurality of claws 14, which are arranged along the circumference of the tool body 1. The plurality of claws 14 can drive the oil seal 200 at various locations around the oil seal 200, and are arranged on the same radial cross-section of the tool body 1, thereby avoiding the oil seal 200 from being locally subjected to force during the process of moving the tool body 1 to disassemble the oil seal 200. As a result, the oil seal 200 can be subjected to uniform force at various locations, ensuring that the oil seal 200 is not deflected during movement, avoiding damage to the oil seal 200 due to uneven force during disassembly, and realizing non-destructive disassembly of the oil seal 200.

[0070] Combine Figures 1-19 In the embodiment shown, the tool body 1 includes: an outer sleeve 12 and an inner sleeve 13. A first space 140 is defined between the bottom wall of the outer sleeve 12 and the bottom wall of the inner sleeve 13. The first space 140 is used to accommodate the claw 14. When the claw 14 is received in the tool body 1, the claw 14 is received in the first space 140. The claw 14 is arranged between the outer sleeve 12 and the inner sleeve 13, which can simplify the structure of the oil seal disassembly and assembly tool 100 and facilitate the assembly of the claw 14.

[0071] The inner sleeve 13 and the outer sleeve 12 can limit the position of the claw 14 on both sides of the axial direction of the claw 14, ensuring the stability of the arrangement of the claw 14. In addition, the inner sleeve 13 and the outer sleeve 12 define a first space 140. The claw 14 disposed in the first space 140 can be protected by the inner sleeve 13 and the outer sleeve 12 to prevent the claw 14 from being deformed or damaged by external forces.

[0072] A through hole 122 is provided on the side wall of the outer sleeve 12, and the extension direction of the through hole 122 extends radially along the tooling body 1. The claw 14 is movably arranged in the first space 140 through the through hole 122. Therefore, when the claw 14 is extended to the outside of the tooling body 1, the claw 14 moves to the outside of the tooling body 1 through the through hole 122 to evenly drive the oil seal 200 to separate the oil seal 200 from the installation position, thereby realizing the disassembly of the oil seal 200.

[0073] Combine Figures 11-19 In the illustrated embodiment, maintenance personnel can drive the claw 14 by driving the inner sleeve 13 to rotate relative to the outer sleeve 12 , so that the claw 14 can be extended out of the tool body or retracted into the first space 140 .

[0074] Specifically, a guide groove 131 is provided on the bottom wall of the inner sleeve 13 and is obliquely arranged in the radial direction of the tooling body 1, and a mating protrusion 141 is provided on the claw 14. The guide groove 131 cooperates with the mating protrusion 141, wherein when the inner sleeve 13 rotates in a first direction relative to the outer sleeve 12, the claw 14 extends out of the first space 140, and when the inner sleeve 13 rotates in a second direction opposite to the first direction relative to the outer sleeve 12, the claw 14 retracts into the first space 140.

[0075] Among them, the first direction can be counterclockwise, and the second direction is clockwise. At this time, the guide groove 131 is tilted in the counterclockwise direction from the center to the periphery in the radial direction of the tooling body 1; or the first direction is clockwise, and the second direction is counterclockwise. At this time, the guide groove 131 is tilted in the clockwise direction from the center to the periphery in the radial direction of the tooling body 1.

[0076] Since the through hole 122 cooperates with the claw 14, the claw 14 and the cooperating protrusion 141 provided on the claw 14 can only move along the extension direction of the through hole 122, that is, the radial direction of the tooling body 1. When the inner sleeve 13 rotates relative to the outer sleeve 12, the cooperating protrusion 141 cooperating with the guide groove 131 moves along the guide groove 131 under the limiting action of the guide groove 131.

[0077] Because the guide groove 131 is inclined in the first direction from the center to the periphery in the radial direction of the tool body 1, when the inner sleeve 13 rotates relative to the outer sleeve 12 in the first direction, the mating protrusion 141 moves radially along the tool body 1 and moves from the side of the guide groove 131 closer to the center to the side of the guide groove 131 closer to the periphery, while the claw 14 extends out of the first space 140 through the through hole 122. When the inner sleeve 13 rotates relative to the outer sleeve 12 in the second direction, the mating protrusion 141 moves radially along the tool body 1 and moves from the side of the guide groove 131 closer to the periphery to the side of the guide groove 131 closer to the center, while the claw 14 retracts into the first space 140 through the through hole 122.

[0078] In other embodiments, the driving of the claw 14 can also be achieved by other means, such as a driving structure formed by integrating a locking member and a reset member, etc., and it is only necessary to achieve the extension and retraction control of the claw 14, which is not limited here.

[0079] like Figure 6 、 Figure 8 、 Figure 11 、 Figure 12 、 Figure 14 、 Figure 18 and Figure 19 As shown, the outer end of the inner sleeve 13 is provided with an operating portion 132 for rotating the inner sleeve 13 relative to the outer sleeve 12, and the operating portion 132 is provided with a graspable operating protrusion 1321. A person can conveniently rotate the inner sleeve 13 by grasping the operating protrusion 1321 to rotate the inner sleeve 13 relative to the outer sleeve 12.

[0080] In some embodiments, the operating portion 132 may also be other structures, such as a knob, which may be coupled with the inner sleeve 13 . A person may conveniently rotate the inner sleeve 13 relative to the outer sleeve 12 by grasping and rotating the knob.

[0081] Specifically, the operating portion 132 can be located on a side of the inner sleeve 13 opposite to the bottom wall, and at the opening 221 between the inner sleeve 13 and the outer sleeve 12, so that a person can easily grasp the operating portion 132 and can easily operate the operating portion 132 to rotate the inner sleeve 13 relative to the outer sleeve 12.

[0082] In some embodiments, the first driving member 2 includes a driving nut 21 and a limiting member 22. A second threaded section 211 is provided on the inner circumference of the driving nut 21. Due to the hexagonal structure of the outer circumference of the driving nut 21, the user can conveniently rotate the driving nut 21 using tools such as a wrench, thereby conveniently driving the first driving member 2.

[0083] Among them, the driving nut 21 and the limiting member 22 can be formed as one piece, and the limiting member 22 is arranged on the side of the driving nut 21 facing the mechanical structure. At this time, when the driving nut 21 is rotated, the driving nut 21 and the limiting member 22 rotate synchronously, and drive the tooling body 1 and the first driving member 2 to move relative to each other in the axial direction of the tooling body 1.

[0084] Alternatively, the limiting nut and the limiting member 22 are two independent parts, and the limiting member 22 is sandwiched between the driving nut 21 and the housing 400. The limiting member 22 is fixed in position and limits the driving nut 21 in the axial direction, so that the driving nut 21 is fixed in position relative to the mechanical structure in the axial direction and is spaced a certain distance apart.

[0085] Thus, the drive nut 21 is rotated, and during the rotation of the drive nut 21, the tooling body 1 and the drive nut 21 are driven to move relative to each other in the axial direction of the tooling body 1. The oil seal 200, which is sleeved on the tooling body 1 and limited by the claw 14 provided on the tooling body 1, can be pulled out of the mechanical structure and moved between the mechanical structure and the drive nut 21.

[0086] Reference Figure 3 and Figure 4 The limiting member 22 defines a second space 220, and the second space 220 has an opening 221 toward the head end of the tooling body 1. The oil seal 200 moves to the second space 220 through the opening 221. The oil seal 200 is pulled out of the mechanical structure and moves to the matching position between the mechanical structure and the drive nut 21 and the limiting member 22 and the tooling body 1. The limiting member 22 cooperates with the mechanical structure. The limiting member 22 includes an annular wall that cooperates with the mechanical structure and a bottom wall that cooperates with the tooling body 1. The bottom wall is fitted with the drive nut 21, and the end of the annular wall is connected to the bottom wall to jointly define a second space 220 that can accommodate the oil seal 200, so as to avoid the setting of the limiting member 22 affecting the movement of the oil seal 200 outside the mechanical structure.

[0087] like Figure 1 and Figure 2 As shown, the second driving member 3 has an extrusion portion 31 suitable for extruding the oil seal 200. The extrusion portion 31 cooperates with the outer end surface of the oil seal 200. The extrusion portion 31 is arranged along the circumference of the tooling body 1 and on the same radial cross-section of the tooling body 1. The extrusion portion 31 can drive the oil seal 200 at various locations along the circumference of the oil seal 200. The extrusion portion 31 is located on the same radial cross-section of the tooling body 1, thereby preventing the oil seal 200 from being subjected to localized force during the movement of the second driving member 3 for installation. As a result, the oil seal 200 is evenly stressed, ensuring that the oil seal 200 does not deflect during movement and avoiding damage to the oil seal 200 due to uneven force during installation, thus achieving non-destructive installation of the oil seal 200.

[0088] Reference Figure 1and Figure 2 In order to prevent the oil seal 200 from being damaged by continued squeezing of the second driving member 3 after being installed in place, the second driving member 3 has a limiting portion 33. When the squeezing portion 31 squeezes the oil seal 200 to the installation position, the limiting portion 33 cooperates with the outer end surface of the casing 400 to limit the second driving member 3 after the squeezing portion 31 squeezes the oil seal 200 to the installation position, thereby preventing the oil seal 200 from being further squeezed and damaged.

[0089] In other embodiments, the limiting portion 33 may also cooperate with the tooling body 1 when the extrusion portion 31 squeezes the oil seal 200 to the installation position, so as to limit the second driving member 3 after the extrusion portion 31 squeezes the oil seal 200 to the installation position, thereby preventing the oil seal 200 from being further squeezed and damaged.

[0090] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An oil seal disassembly and assembly tool, characterized in that: include: A tool body, the tool body including a positioning portion that cooperates with the shaft hole, a first threaded section being provided on an outer peripheral surface of the tool body, and a claw that is retractably arranged along the radial direction of the tool body, wherein the claw cooperates with the inner end surface of the oil seal when the claw is extended; a first driving member, the first driving member being detachably sleeved on the outside of the tooling body, the first driving member having a second threaded section on its inner circumference, the second threaded section cooperating with the first threaded section to move the tooling body relative to the first driving member and pull the oil seal out of the installation position; The second driving member is detachably mounted on the outside of the tooling body and can move along the axis of the tooling body. The second driving member cooperates with the outer end surface of the oil seal to squeeze the oil seal to the installation position.

2. The oil seal disassembly and assembly tool according to claim 1, characterized in that: The clamping claws include a plurality of clamping claws, which are arranged along the circumference of the tool body and on the same radial cross-section of the tool body.

3. The oil seal disassembly and assembly tool according to claim 1, characterized in that: The tool body comprises: an outer sleeve, a through hole is provided on the side wall of the outer sleeve, and an extension direction of the through hole extends along the radial direction of the tool body; The inner sleeve defines a first space between the bottom wall of the outer sleeve and the bottom wall of the inner sleeve, and the clamping claw is movably disposed in the first space through the through hole.

4. The oil seal disassembly and assembly tool according to claim 3, characterized in that: The bottom wall of the inner sleeve is provided with a guide groove inclined in the radial direction of the tool body, and the claw is provided with a matching protrusion, and the guide groove cooperates with the matching protrusion. When the inner sleeve rotates relative to the outer sleeve in a first direction, the claw extends out of the first space; when the inner sleeve rotates relative to the outer sleeve in a second direction opposite to the first direction, the claw retracts into the first space.

5. The oil seal disassembly and assembly tool according to claim 4, characterized in that: An operating portion for rotating the inner sleeve relative to the outer sleeve is provided at the outer end of the inner sleeve, and the operating portion is provided with a graspable operating protrusion.

6. The oil seal disassembly and assembly tool according to claim 1, characterized in that: The first driving member includes a driving nut and a limiting member. The limiting member is clamped between the driving nut and the housing. A second threaded section is provided on the inner circumference of the driving nut.

7. The oil seal disassembly and assembly tool according to claim 6, characterized in that: The limiting member defines a second space, the second space has an opening toward the head end of the tool body, and the oil seal moves to the second space through the opening.

8. The oil seal disassembly and assembly tool according to claim 1, characterized in that: The second driving member has an extrusion portion suitable for extruding the oil seal, the extrusion portion cooperates with the outer end surface of the oil seal, and the extrusion portion is arranged along the circumference of the tooling body and on the same radial cross-section of the tooling body.

9. The oil seal disassembly and assembly tool according to claim 8, characterized in that: The second driving member has a limiting portion, and when the extrusion portion squeezes the oil seal to the installation position, the limiting portion cooperates with the outer end surface of the housing.

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