Multi-specification puller device

Abstract

The utility model discloses a multi-specification puller device which aims at overcoming the defects that in the prior art, a puller device is small in applicable bearing specification range and poor in universality. The device comprises: an internal threaded rod; the external threaded rod is arranged on the internal threaded rod in a sleeving manner; the inner side pull claw assembly comprises an inner supporting frame connected to the outer threaded rod and a plurality of inner pull rods arranged on the inner supporting frame at intervals. The outer side pull claw assembly comprises an outer supporting frame connected to the outer threaded rod and a plurality of outer pull rods arranged on the outer supporting frame at intervals, and the outer pull rods are located on the outer sides of the inner pull rods; the internal threaded rod can rotate to drive the external threaded rod to move in the axial direction of the internal threaded rod; the inner side pull claw assembly can rotate around the axis of the inner threaded rod. The outer side pull claw assembly can rotate around the axis of the inner threaded rod. Through the design of the inner pull rod and the outer pull rod of the structure, clamping and grabbing of bearing shaft sleeves in various different modes can be achieved, and then disassembly and assembly operation of bearings of various specifications is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to bearing disassembly and assembly, and more specifically, to a multi-specification puller device. Background Art

[0002] At present, a puller device is a frequently used tool in mechanical maintenance. It is mainly used to remove a damaged bearing from a shaft along the axial direction, and can be used as an internal or external puller. In the prior art, most bearing pullers are applicable to a small range of specifications, and generally can only be disassembled and assembled for bearings of a single specification, resulting in the disadvantage of poor universal performance. Therefore, the present invention provides a puller device for rapid disassembly and assembly of bearings of multiple specifications to solve the above problem. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art puller device that the puller device is applicable to a narrow range of bearing specifications and has poor universal performance, and provides a multi-specification puller device which can realize the disassembly and assembly operations of bearings of various different specifications.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a multi-specification puller device, comprising: an internally threaded rod; an externally threaded rod, sleeved on the internally threaded rod; an inner pulling claw assembly, comprising an inner supporting frame connected to the externally threaded rod and a plurality of inner pulling rods spaced apart on the inner supporting frame; an outer pulling claw assembly, comprising an outer supporting frame connected to the externally threaded rod and a plurality of outer pulling rods spaced apart on the outer supporting frame, the outer pulling rods being located on the outside of the inner pulling rods.

[0005] Through the above structure, the internal threaded rod can drive the external threaded rod to move axially along the internal threaded rod by rotation; the inner pull claw assembly can rotate around the axis of the internal threaded rod; the outer pull claw assembly can rotate around the axis of the internal threaded rod; in a specific implementation manner, when the external threaded rod moves axially along the internal threaded rod, the external threaded rod will synchronously drive the inner support frame and the outer support frame to move axially along the internal threaded rod, thereby driving the inner pull rod and the outer pull rod to move axially along the internal threaded rod to realize the gripping of the bearing sleeve, and then drive the external threaded rod to rotate in the direction of rotation to realize the disassembly and assembly of the bearing; wherein the above structure can realize the gripping of bearing sleeves of various different specifications by the following methods, gripping the outer side of the bearing sleeve through the inner side of the internal pull rod; gripping the outer side of the bearing sleeve through the outer side of the internal pull rod; gripping the outer side of the bearing sleeve through the inner side of the external pull rod; gripping the outer side of the bearing sleeve through the outer side of the external pull rod; gripping the outer side of the bearing sleeve through the outer side of the internal pull rod, and gripping the outer side of the bearing sleeve through the inner side of the external pull rod.

[0006] Preferably, the internal threaded rod and the external threaded rod are threadedly connected, so that the internal threaded rod can drive the external threaded rod to move along the axial direction of the internal threaded rod by rotating around its own axis.

[0007] Preferably, the inner support frame includes an inner support frame body arranged on the outer threaded rod, a plurality of inner tie rod connection parts are arranged in a circumferential array on the outer side of the inner support frame body, an inner tie rod installation groove 1 is provided on the inner tie rod connection part, and the inner tie rod is arranged in the installation groove 1. There are three inner tie rod connection parts in total. When the bearing needs to be disassembled and assembled, the outer threaded rod is first rotated forward to drive the outer threaded rod to move along the axial direction of the inner threaded rod, so that it drives the three inner tie rods connected to the inner support frame to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged inner tie rod will first rotate outwardly by a certain angle, and then rotate inwardly by a certain angle to achieve the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the outer threaded rod is driven to move along the axial direction of the inner threaded rod by reverse rotation, so as to achieve the disassembly and assembly of the bearing; wherein, the inner tie rod is suitable for the disassembly and assembly of bearings with smaller diameter specifications.

[0008] Preferably, the outer support frame includes an outer support frame body arranged on the outer threaded rod, a plurality of outer tie rod connection parts are arranged in a circumferential array on the outer side of the outer support frame body, an outer tie rod installation groove 2 is provided on the outer tie rod connection part, and the outer tie rod is arranged in the installation groove 2. There are three outer tie rod connection parts in total, and when it is necessary to disassemble and assemble the bearing, the outer threaded rod is first driven to move along the axial direction of the inner threaded rod by forward rotation, so that it drives the three inner tie rods connected to the outer support frame to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged outer tie rod will first rotate outwardly by a certain angle, and then rotate outwardly by a certain angle to achieve the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the outer threaded rod is driven to move along the axial direction of the inner threaded rod by reverse rotation, so as to achieve the disassembly and assembly of the bearing; wherein, the outer tie rod is suitable for the disassembly and assembly of bearings with larger diameter specifications.

[0009] Preferably, a plurality of locking holes 1 are provided on the inner pull rod connection portion, and the locking holes 1 are arranged at intervals on the two side walls of the mounting groove 1 along the radial direction of the inner threaded rod, and the inner pull rod is hinged to the inner pull rod connection portion through a connecting shaft 1 passing through the locking holes 1. There are 10 locking holes in total, and they are arranged at equal intervals along the radial direction of the inner threaded rod, so that the inner pull rod on the puller device can be disassembled and assembled for bearings of different diameters.

[0010] Preferably, a plurality of locking holes 2 are provided on the outer pull rod connection part, and the locking holes 2 are arranged at intervals along the radial direction of the inner threaded rod on the two side walls of the mounting groove 2, and the inner pull rod is hinged to the inner pull rod connection part through a connecting shaft 2 passing through the locking holes 2. There are 10 locking holes in total, and they are arranged at equal intervals along the radial direction of the inner threaded rod, so that the inner pull rod on the puller device can be disassembled and assembled for bearings of different diameters.

[0011] Preferably, a first claw portion is provided at the end of the inner pull rod away from the inner support frame, and a second claw portion is provided at the end of the outer pull rod away from the outer support frame. Both the first claw portion and the second claw portion are designed in an inverted isosceles trapezoidal structure, and both the first claw portion and the second claw portion are provided with a hook groove, and the hook groove design facilitates the realization of the clamping fit of the shaft sleeve on the bearing.

[0012] Preferably, the inner pull rod comprises an inner pull rod body and a transition portion arranged between the inner pull rod connecting portion and the inner pull rod body. The transition portion is used for transition between the inner pull rod connecting portion and the inner pull rod body, so that the inner pull rod body can be adjusted at more angles, so that the puller device of the present invention can realize the disassembly and assembly of bearings of more specifications.

[0013] Preferably, the device further comprises a primary rotating handle, which is connected to one end of the internal threaded rod in the axial direction and is vertically arranged between the primary rotating handle and the internal threaded rod, so as to facilitate the fixing or rotating operation of the internal threaded rod.

[0014] Preferably, a secondary rotating handle is further included, which is connected to one end of the external threaded rod in the axial direction. The primary rotating handle is vertically arranged between the internal threaded rod to facilitate the fixing or rotating operation of the external threaded rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are: (1) through the structural design of the inner pull rod and the outer pull rod, it is possible to grasp a variety of different types of bearing sleeves, thereby realizing the disassembly and assembly of bearings of various specifications; (2) by arranging a variety of radial locking holes 1 and 2 on the inner support frame and the outer support frame, the radial distance between the inner pull rod and the outer pull rod and the internal threaded rod can be adjusted, further improving the universal performance of the puller device; (3) the structural design of the claw part 1 and the claw part 2 enables the inner pull rod body to be adjusted at more angles, so that the puller device of the present invention can realize the disassembly and assembly of bearings of more specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a multi-specification puller device of the utility model;

[0017] Figure 2 It is a cross-sectional view of a multi-specification puller device of the utility model;

[0018] In the figure: internal threaded rod 100; external threaded rod 101; internal support frame 102; internal pull rod 103; external support frame 104; external pull rod 105; internal support frame body 106; internal pull rod connecting part 107; mounting groove 108; external support frame body 109; external pull rod connecting part 110; mounting groove 2 111; locking hole 112; connecting shaft 1 113; locking hole 2 114; connecting shaft 2 115; claw part 1 200; claw part 201; hook groove 202; internal pull rod body 300; adapter 301; primary rotating handle 400; secondary rotating handle 401. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0020] Example 1: See attached Figure 1 To Attachment Figure 2 A multi-specification puller device includes: an internal threaded rod 100; an external threaded rod 101, which is sleeved on the internal threaded rod 100, and the internal threaded rod 100 and the external threaded rod 101 are threadedly connected. The internal threaded rod 100 can drive the external threaded rod 101 to move axially along the internal threaded rod 100 by rotating. When the internal threaded rod 100 moves axially relative to the external threaded rod 101, it is necessary to first fix the external threaded rod 101, and then rotate and drive the internal threaded rod 100; when the external threaded rod 101 moves axially relative to the internal threaded rod 100, it is necessary to first fix the internal threaded rod 101, and then rotate and drive the internal threaded rod 100. Rotate and drive the external threaded rod 101; an inner pulling claw assembly, which can rotate around the axis of the internal threaded rod, and includes an inner support frame 102 connected to the external threaded rod 101 and three inner pull rods 103 spaced apart on the inner support frame 102; an outer pulling claw assembly, which can rotate around the axis of the internal threaded rod, and includes an outer support frame 104 connected to the external threaded rod 101 and three outer pull rods 105 spaced apart on the outer support frame 104, the outer pull rod 105 is located on the outside of the inner pull rod 103, and the inner pull rod 103 and the outer pull rod 105 are staggered.

[0021] The end of the inner pull rod 103 away from the inner support frame 102 is provided with a claw part 1 200; the end of the outer pull rod 105 away from the outer support frame 104 is provided with a claw part 201. The claw part 1 and the claw part 2 are both designed with an inverted isosceles trapezoidal structure, and the claw part 1 200 and the claw part 201 are both provided with a hook groove 202, which is designed to facilitate the clamping and grabbing of the shaft sleeve on the bearing.

[0022] Specific implementation method: When the bearing needs to be disassembled and assembled, the external threaded rod 101 is first moved along the axial direction of the internal threaded rod 100, and the external threaded rod 101 will synchronously drive the internal support frame 102 and the external support frame 104 to move along the axial direction of the internal threaded rod 100, thereby driving the internal pull rod 103 and the external pull rod 105 to move along the axial direction of the internal threaded rod 100 to achieve the clamping of the bearing sleeve, and then the external threaded rod 101 is driven to rotate in the direction to achieve the disassembly and assembly of the bearing; wherein, the above structure can be realized in the following ways The invention discloses a method for grasping bearing sleeves of different specifications, wherein the outer side of the bearing sleeve is grasped by the inner side of the claw part 200 of the inner tie rod 103; the outer side of the bearing sleeve is grasped by the outer side of the claw part 200 of the inner tie rod 103; the outer side of the bearing sleeve is grasped by the inner side of the claw part 201 of the outer tie rod 105; the outer side of the bearing sleeve is grasped by the outer side of the claw part 201 of the outer tie rod 105; the outer side of the bearing sleeve is grasped by the outer side of the claw part 200 of the inner tie rod 103, and the outer side of the bearing sleeve is grasped by the inner side of the claw part 201 of the outer tie rod 105.

[0023] Embodiment 2:

[0024] See attached Figure 1 To Attachment Figure 2 , this embodiment further defines the inner support frame and the outer support frame on the basis of the specific embodiment 1, including an inner threaded rod 100; an outer threaded rod 101, which is sleeved on the inner threaded rod 100, the inner threaded rod 100 and the outer threaded rod 101 are threadedly connected, and the inner threaded rod 100 can drive the outer threaded rod 101 to move axially along the inner threaded rod 100 by rotation; an inner claw assembly, the inner claw assembly can rotate around the axis of the inner threaded rod, and it includes an inner support frame 102 connected to the outer threaded rod 101 and three inner pull rods 103 arranged at intervals on the inner support frame 102; an outer claw assembly, the outer claw assembly can rotate around the axis of the inner threaded rod, and it includes an outer support frame 104 connected to the outer threaded rod 101 and three outer pull rods 105 arranged at intervals on the outer support frame 104, the outer pull rod 105 is located on the outside of the inner pull rod 103, and the inner pull rod 103 and the outer pull rod 105 are staggered.

[0025] Among them, when the internal threaded rod 100 moves axially relative to the external threaded rod 101, it is necessary to first fix the external threaded rod 101 and then rotate and drive the internal threaded rod 100; when the external threaded rod 101 moves axially relative to the internal threaded rod 100, it is necessary to first fix the internal threaded rod 100 and then rotate and drive the external threaded rod 101.

[0026] The end of the inner pull rod 103 away from the inner support frame 102 is provided with a claw part 1 200; the end of the outer pull rod 105 away from the outer support frame 104 is provided with a claw part 201. The claw part 1 and the claw part 2 are both designed with an inverted isosceles trapezoidal structure, and the claw part 1 200 and the claw part 201 are both provided with a hook groove 202, which is designed to facilitate the clamping and grabbing of the shaft sleeve on the bearing.

[0027] The inner support frame 102 includes an inner support frame body 106 arranged on the outer threaded rod 101, and three inner tie rod connecting parts 107 are arranged in a circumferential array on the outer side of the inner support frame body 106. The inner tie rod connecting part 107 is provided with an inner tie rod installation groove 108, and the inner tie rod 103 is arranged in the installation groove 108. When the bearing needs to be disassembled and assembled, the outer threaded rod 101 is first rotated forward to drive the axial movement of the inner threaded rod 100, so that it drives the three inner tie rods 103 connected to the inner support frame 102 to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged inner tie rod will first rotate outward by a certain angle, and then rotate inward by a certain angle to realize the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the outer threaded rod 101 is driven to move along the axial direction of the inner threaded rod 100 by reverse rotation, so as to realize the disassembly and assembly of the bearing; wherein, the inner tie rod is suitable for disassembly and assembly of bearings with smaller diameter specifications.

[0028] The outer support frame 104 includes an outer support frame body 109 arranged on the external threaded rod 101. The outer circumferential array of the outer support frame body 109 is provided with three outer pull rod connecting parts 110. The outer pull rod connecting part 110 is provided with an outer pull rod installation groove 2 111, and the outer pull rod 105 is arranged in the installation groove 2 111. There are three external tie rod connection parts 110. When the bearing needs to be disassembled and assembled, the external threaded rod 101 is first rotated in the forward direction to drive the internal threaded rod 100 to move axially, so that it drives the three internal tie rods connected to the external support frame 104 to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged external tie rod 105 will first rotate outward by a certain angle, and then rotate outward by a certain angle to achieve the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the external threaded rod 101 is driven to move axially along the internal threaded rod 100 by reverse rotation, thereby realizing the disassembly and assembly of the bearing; among them, the external tie rod is suitable for the disassembly and assembly of bearings with larger diameter specifications.

[0029] Specific implementation method: When the bearing needs to be disassembled and assembled, when the external threaded rod 101 moves along the axial direction of the internal threaded rod 100, the external threaded rod 101 will synchronously drive the internal support frame 102 and the external support frame 104 to move along the axial direction of the internal threaded rod 100, thereby driving the internal pull rod 103 and the external pull rod 105 to move along the axial direction of the internal threaded rod 100 to achieve the clamping of the bearing sleeve, and then the external threaded rod 101 is driven to rotate in the direction to achieve the disassembly and assembly of the bearing; wherein, the above structure can realize various operations in the following ways The gripping of bearing sleeves of different specifications is as follows: the outer side of the bearing sleeve is gripped by the inner side of the claw part 200 of the inner tie rod 103; the outer side of the bearing sleeve is gripped by the outer side of the claw part 200 of the inner tie rod 103; the outer side of the bearing sleeve is gripped by the inner side of the claw part 201 of the outer tie rod 105; the outer side of the bearing sleeve is gripped by the outer side of the claw part 201 of the outer tie rod 105; the outer side of the bearing sleeve is gripped by the outer side of the claw part 200 of the inner tie rod 103, and the outer side of the bearing sleeve is gripped by the inner side of the claw part 201 of the outer tie rod 105.

[0030] Embodiment 3:

[0031] See attached Figure 1 To Attachment Figure 2 , this embodiment is a further limitation on the inner support frame and the outer support frame on the basis of the specific embodiment 2, including an inner threaded rod 100; an outer threaded rod 101, which is sleeved on the inner threaded rod 100, the inner threaded rod 100 and the outer threaded rod 101 are threadedly connected, and the inner threaded rod 100 can drive the outer threaded rod 101 to move axially along the inner threaded rod 100 by rotation; an inner claw assembly, the inner claw assembly can rotate around the axis of the inner threaded rod, and it includes an inner support frame 102 connected to the outer threaded rod 101 and three inner pull rods 103 arranged at intervals on the inner support frame 102; an outer claw assembly, the outer claw assembly can rotate around the axis of the inner threaded rod, and it includes an outer support frame 104 connected to the outer threaded rod 101 and three outer pull rods 105 arranged at intervals on the outer support frame 104, the outer pull rod 105 is located on the outside of the inner pull rod 103, and the inner pull rod 103 and the outer pull rod 105 are staggered.

[0032] Among them, when the internal threaded rod 100 moves axially relative to the external threaded rod 101, it is necessary to first fix the external threaded rod 101 and then rotate and drive the internal threaded rod 100; when the external threaded rod 101 moves axially relative to the internal threaded rod 100, it is necessary to first fix the internal threaded rod 100 and then rotate and drive the external threaded rod 101.

[0033] The end of the inner pull rod 103 away from the inner support frame 102 is provided with a claw part 1 200; the end of the outer pull rod 105 away from the outer support frame 104 is provided with a claw part 201. The claw part 1 and the claw part 2 are both designed with an inverted isosceles trapezoidal structure, and the claw part 1 200 and the claw part 201 are both provided with a hook groove 202, which is designed to facilitate the clamping and grabbing of the shaft sleeve on the bearing.

[0034] The inner support frame 102 includes an inner support frame body 106 arranged on the outer threaded rod 101, and three inner tie rod connecting parts 107 are arranged in a circumferential array on the outer side of the inner support frame body 106. The inner tie rod connecting part 107 is provided with an inner tie rod installation groove 108, and the inner tie rod 103 is arranged in the installation groove 108. When the bearing needs to be disassembled and assembled, the outer threaded rod 101 is first rotated forward to drive the axial movement of the inner threaded rod 100, so that it drives the three inner tie rods 103 connected to the inner support frame 102 to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged inner tie rod will first rotate outward by a certain angle, and then rotate inward by a certain angle to realize the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the outer threaded rod 101 is driven to move along the axial direction of the inner threaded rod 100 by reverse rotation, so as to realize the disassembly and assembly of the bearing; wherein, the inner tie rod is suitable for disassembly and assembly of bearings with smaller diameter specifications.

[0035] The outer support frame 104 includes an outer support frame body 109 arranged on the external threaded rod 101. The outer circumferential array of the outer support frame body 109 is provided with three outer pull rod connecting parts 110. The outer pull rod connecting part 110 is provided with an outer pull rod installation groove 2 111, and the outer pull rod 105 is arranged in the installation groove 2 111. There are three external tie rod connection parts 110. When the bearing needs to be disassembled and assembled, the external threaded rod 101 is first rotated in the forward direction to drive the internal threaded rod 100 to move axially, so that it drives the three internal tie rods connected to the external support frame 104 to move synchronously in the direction of the bearing to be disassembled and assembled, so as to evenly clamp the bearing to be disassembled and assembled (during the clamping process, the hinged external tie rod 105 will first rotate outward by a certain angle, and then rotate outward by a certain angle to achieve the clamping of the bearing sleeve of the bearing to be disassembled and assembled), and then the external threaded rod 101 is driven to move axially along the internal threaded rod 100 by reverse rotation, thereby realizing the disassembly and assembly of the bearing; among them, the external tie rod is suitable for the disassembly and assembly of bearings with larger diameter specifications.

[0036] Ten locking holes 112 are provided on the inner pull rod connection part 107. The locking holes 112 are arranged at intervals on the two side walls of the installation groove 108 along the radial direction of the inner threaded rod 100. The inner pull rod 103 is hinged to the inner pull rod connection part 107 through a connecting shaft 113 passing through the locking holes 112. The locking holes 112 are arranged at equal intervals along the radial direction of the inner threaded rod 100, so that the inner pull rod 103 on the puller device can be disassembled and assembled for bearings of different diameters. By providing a variety of radial locking holes 1 and 2 on the inner support frame and the outer support frame, the radial distance between the inner pull rod and the outer pull rod and the inner threaded rod can be adjusted, further improving the universal performance of the puller device.

[0037] Preferably, ten locking holes 114 are provided on the outer rod connection part 110, and the locking holes 114 are arranged on the two side walls of the installation groove 2 at intervals along the radial direction of the inner threaded rod 100, and the inner rod 103 is hinged to the inner rod connection part 107 through the connecting shaft 115 passing through the locking holes 114. The locking holes 114 are arranged at equal intervals along the radial direction of the inner threaded rod 100, so that the outer rod 105 on the puller device can be disassembled and assembled for bearings of different diameters.

[0038] Specific implementation method: When it is necessary to disassemble and assemble the bearing, the inner pull rod and the outer pull rod can be installed in the corresponding locking hole 112 and the locking hole 2 114 according to the specifications of the bearing to be disassembled and assembled. When the external threaded rod 101 is moved along the axial direction of the internal threaded rod 100, the external threaded rod 101 will synchronously drive the inner support frame 102 and the outer support frame 104 to move along the axial direction of the internal threaded rod 100, thereby driving the inner pull rod 103 and the outer pull rod 105 to move along the axial direction of the internal threaded rod 100 to achieve the gripping of the bearing sleeve, and then the external threaded rod 101 is driven to rotate in the direction to achieve the disassembly and assembly of the bearing. Operation; wherein, the above structure can realize the gripping of bearing sleeves of various different specifications by the following methods: gripping the outer side of the bearing sleeve by the inner side of the claw part 200 of the inner pull rod 103; gripping the outer side of the bearing sleeve by the outer side of the claw part 200 of the inner pull rod 103; gripping the outer side of the bearing sleeve by the inner side of the claw part 201 of the outer pull rod 105; gripping the outer side of the bearing sleeve by the outer side of the claw part 201 of the outer pull rod 105; gripping the outer side of the bearing sleeve by the outer side of the claw part 200 of the inner pull rod 103, and gripping the outer side of the bearing sleeve by the inner side of the claw part 201 of the outer pull rod 105.

[0039] Embodiment 4:

[0040] See attached Figure 1 To Attachment Figure 2This embodiment is a further limitation on the inner pull rod based on the specific embodiment 3. The inner pull rod 103 includes an inner pull rod body 300 and a transition portion 301 disposed between the inner pull rod connection portion 107 and the inner pull rod body 300. The transition portion 301 is used for transition between the inner pull rod connection portion 107 and the inner pull rod body 300, so that the inner pull rod body 300 can be adjusted at more angles, so that the puller device of the present invention can realize the disassembly and assembly of bearings of more specifications. The transition portion 301 is used for transition between the inner pull rod connection portion 107 and the inner pull rod body 300, so that the inner pull rod body 300 can be adjusted at more angles, so that the puller device of the present invention can realize the disassembly and assembly of bearings of more specifications.

[0041] Embodiment 5:

[0042] See attached Figure 1 To Attachment Figure 2 In this embodiment, a primary rotating handle 400 and a secondary rotating handle 401 are added on the basis of the specific embodiment 1. The primary rotating handle 400 is connected to one end of the axial direction of the internal threaded rod 100. The primary rotating handle 400 and the internal threaded rod 100 are vertically arranged to facilitate the fixing or rotating operation of the internal threaded rod 100; the secondary rotating handle 401 is connected to one end of the axial direction of the external threaded rod 101. The primary rotating handle 400 and the internal threaded rod 100 are vertically arranged to facilitate the fixing or rotating operation of the external threaded rod 101.

[0043] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A multi-specification puller device, characterized in that: include: An internal threaded rod; an external threaded rod, which is sleeved on the internal threaded rod, and the internal threaded rod can drive the external threaded rod to move axially along the internal threaded rod by rotation; an inner pulling claw assembly, including an inner supporting frame connected to the external threaded rod and a plurality of inner pulling rods spaced apart on the inner supporting frame; an outer pulling claw assembly, including an outer supporting frame connected to the external threaded rod and a plurality of outer pulling rods spaced apart on the outer supporting frame, and the outer pulling rods are located on the outside of the inner pulling rod.

2. A multi-specification puller device according to claim 1, characterized in that: The internal thread rod and the external thread rod are threadedly connected.

3. A multi-specification puller device according to claim 2, characterized in that: The inner support frame comprises an inner support frame body arranged on an external threaded rod, a plurality of inner tie rod connecting parts are arranged in a circumferential array on the outer side of the inner support frame body, an inner tie rod installation groove 1 is opened on the inner tie rod connecting part, and the inner tie rod is arranged in the installation groove 1.

4. A multi-specification puller device according to claim 3, characterized in that: The outer support frame comprises an outer support frame body arranged on an external threaded rod, a plurality of outer tie rod connecting parts are arranged in a circumferential array on the outer side of the outer support frame body, an outer tie rod installation groove 2 is opened on the outer tie rod connecting part, and the outer tie rod is arranged in the installation groove 2.

5. A multi-specification puller device according to claim 4, characterized in that: The inner pull rod connection part is provided with a plurality of locking holes 1 which are arranged at intervals on the two side walls of the mounting groove 1 along the radial direction of the internal threaded rod. The inner pull rod is hinged to the inner pull rod connection part via a connecting shaft 1 which passes through the locking holes 1.

6. A multi-specification puller device according to claim 5, characterized in that: The outer pull rod connection part is provided with a plurality of locking holes 2 which are arranged on the two side walls of the mounting groove 2 at radial intervals along the internal threaded rod. The inner pull rod is hinged to the inner pull rod connection part via a connecting shaft 2 which passes through the locking holes 2.

7. A multi-specification puller device according to any one of claims 1 to 6, characterized in that: A first clamping claw portion is provided at the end of the inner pull rod away from the inner support frame; a second clamping claw portion is provided at the end of the outer pull rod away from the outer support frame.

8. A multi-specification puller device according to claim 7, characterized in that: The inner pull rod comprises an inner pull rod body and a transition portion arranged between the inner pull rod connecting portion and the inner pull rod body.

9. The multi-specification puller device according to claim 1, characterized in that: It also includes a primary rotating handle, which is connected to one end of the internal threaded rod in the axial direction.

10. The multi-specification puller device according to claim 1, characterized in that: It also includes a secondary rotating handle, which is connected to one end of the external threaded rod in the axial direction.

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