Bearing dismounting tool

Abstract

The utility model discloses a bearing dismounting tool which comprises a shaft center, the end portion of the shaft center is connected with an upper handle in a sleeved mode, a lower handle is connected with the outer surface of the shaft center in a screwed mode, the lower handle is connected with a supporting sleeve, an ejector rod is connected inside the shaft center in a screwed mode, the end portion of the ejector rod is used for being connected with a hexagon wrench, and an expansion chuck is connected inside the shaft center in a screwed mode. The expansion chuck is connected with the ejector rod in an inserted mode and used for expanding a bearing to be disassembled, and the supporting sleeve is connected with a shell containing the bearing. A hexagon wrench is used for rotating the ejector rod, the conical head of the ejector rod presses the inner conical face of the expansion chuck to enable the four elastic pieces to expand outwards to support a bearing, the boss clamps the bearing, the lower handle is fixed, the upper handle is rotated, the axis pulls the expansion chuck to rotate and move upwards, and then the bearing can be pulled out. And the damage to the bearing and a shell connecting piece thereof is reduced.

Description

Technical Field

[0001] The utility model relates to a disassembly tool, in particular to a bearing disassembly tool. Background Art

[0002] Bearings are common parts in mechanical equipment. They are mainly used to support mechanical rotating bodies, reduce the friction coefficient of mechanical rotating bodies during movement, and ensure the rotation accuracy of mechanical rotating bodies. In mechanical equipment, bearings inevitably need maintenance or replacement after running for a period of time, so the bearings need to be disassembled. However, bearings are usually tightly connected to the shaft or housing, which brings certain difficulties to the disassembly work. In the prior art, the bearings are usually disassembled by knocking on the bearings, which will cause great damage to the bearings and their connecting parts, and even lead to direct scrapping. Utility Model Content

[0003] The utility model provides a bearing disassembly tool for overcoming the defect that the bearing may be damaged or even scrapped in the bearing disassembly method in the prior art.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a bearing disassembly tool, comprising an axis, an upper handle is sleeved on the end of the axis, a lower handle is screwed and connected to the outer surface of the axis, the lower handle is connected to a support sleeve, a push rod is screwed inside the axis, the end of the push rod is used to connect a hexagonal wrench, an expansion chuck is screwed inside the axis, the expansion chuck is plugged with the push rod and is used to expand and tighten the bearing to be disassembled, and the support sleeve is connected to a shell containing the bearing; a center hole is provided inside the expansion chuck, a reverse thread is provided on one end of the outer surface of the expansion chuck, which is screwed with an internal thread C, a flat position is provided on the lower end of the expansion chuck, which is convenient for clamping with an open-end wrench, and a plurality of open grooves are provided on the other end, the open grooves can be expanded or contracted to the surroundings by external force to form spring pieces matching the number of the open grooves, the ends of the open grooves are provided with arcs, the front end of each of the spring pieces is provided with a boss, and the front end of the center hole is provided with an inner cone.

[0006] Furthermore, the upper handle includes a handle A, both ends of which are screwed with handles A through threaded holes A, and a flat hole is arranged at the center of the handle A.

[0007] Furthermore, the lower handle includes a handle B, both ends of which are screwed with handles B through threaded holes B, an internal thread A is set in the center of the handle B, an inner sinking platform for placing a thrust bearing is set at the lower end of the center, and a groove for placing a retaining ring is set at the lower end of the inner sinking platform.

[0008] Furthermore, the axis includes a flat end at the upper end, whose outer surface is provided with an external thread A, and an inner hole is provided inside. The lower end of the inner hole is respectively provided with an internal thread B and an internal thread C, and the internal thread C is a reverse thread. The axis is fastened to the flat hole through the flat end.

[0009] Furthermore, a groove matching with the retaining spring is provided on the upper side of the support sleeve, and an air avoidance hole is provided at the lower end thereof.

[0010] Furthermore, the top end of the push rod is provided with an internal hexagon for easy rotation with a hexagonal wrench, the outer surface is provided with an external thread B screwed to the internal thread B, and the lower end is provided with a cone head.

[0011] The beneficial effect achieved by the utility model is: the push rod is rotated with a hexagonal wrench, and the cone head of the push rod rotates downward to press the inner cone surface of the expansion chuck so that the spring piece expands outward to support the bearing, and the boss clamps the bearing, the lower handle is fixed, and the upper handle is rotated to make the axis pull the expansion chuck to rotate upward, and the bearing can be pulled out. The bearing removal tool can very conveniently remove the bearing and reduce damage to the bearing and its shell connector. If the bearing is severely corroded and cannot rotate, the upper handle can be fixed, and the lower handle can be rotated to make the support sleeve push the shell downward until the shell is separated from the bearing, and the purpose of removing the bearing is also achieved. For bearings of different specifications, only the corresponding expansion chuck needs to be replaced for use, and the applicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the upper handle of the utility model;

[0015] Figure 3 It is a schematic diagram of the assembly of the axle of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the expansion chuck of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the lower handle of the utility model;

[0018] Figure 6 This is a schematic diagram of the installation of the lower handle and support sleeve of the utility model. Figure 1 ;

[0019] Figure 7 This is a schematic diagram of the installation of the lower handle and support sleeve of the utility model. Figure 2;

[0020] Figure 8 It is a schematic diagram of the working state of the utility model.

[0021] In the figure: 1. Upper handle; 1.1. Handle A; 1.1.1. Threaded hole A; 1.1.2. Flat hole; 1.2. Handle A; 2. Lower handle; 2.1. Handle B; 2.1.1. Threaded hole B; 2.1.2. Internal thread A; 2.1.3. Internal sink; 2.1.4. Groove A; 2.2. Handle B; 2.3. Circlip; 3. Axis; 3.1. Flat end; 3.2. External thread A; 3.3. Internal hole; 3.4. Internal Thread B; 3.5, internal thread C; 4, thrust bearing; 5, support sleeve; 5.1, groove B; 5.2, air avoidance hole; 6, expansion chuck; 6.1, inner cone; 6.2, open groove; 6.3, flat position; 6.4, reverse thread; 6.5, boss; 6.6, center hole; 6.7, arc; 7, push rod; 7.1, hexagonal hole; 7.2, push rod cone head; 7.3, external thread B; 8, hexagonal wrench; 9, bearing; 10, housing. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example 1

[0024] like Figure 1-8 As shown, a bearing removal tool includes a shaft 3, an upper handle 1 is sleeved on the end of the shaft 3, a lower handle 2 is screwed to the outer surface of the shaft 3, the lower handle 2 is connected to a support sleeve 5, a push rod 7 is screwed to the inside of the shaft 3, the end of the push rod 7 is used to connect a hexagonal wrench 8, an expansion chuck 6 is screwed to the inside of the shaft 3, the expansion chuck 6 is plugged into the push rod 7, and is used to expand the bearing 9 to be removed, and the support sleeve 5 is connected to a housing 10 containing the bearing 9.

[0025] The upper handle 1 comprises a handle A1.1, both ends of which are screwed with handles A1.2 through threaded holes A1.1.1, and a flat hole 1.1.2 is arranged at the center of the handle A1.1.

[0026] The lower handle 2 includes a handle B2.1, both ends of which are screwed with handles B2.2 through threaded holes B2.1.1. An internal thread A2.1.2 is set in the center of the handle B2.1, and an inner sink 2.1.3 for placing a thrust bearing 4 is provided at the lower end of the center. A groove 2.1.4 for placing a retaining ring 2.3 is provided at the lower end of the inner sink 2.1.3.

[0027] The axis 3 includes a flat end 3.1 at the upper end, an outer surface of which is provided with an external thread A3.2, an inner hole 3.3 is provided inside, and the lower end of the inner hole 3.3 is provided with an internal thread B3.4 and an internal thread C3.5 respectively, and the internal thread C3.5 is a reverse thread. The axis 3 is fastened to the flat hole 1.1.2 through the flat end 3.1.

[0028] The support sleeve 5 is provided with a groove 5.1 matched with the retaining spring 2.3 on the upper side, and a clearance hole 5.2 on the lower side.

[0029] The expansion chuck 6 is provided with a center hole 6.6 inside, and a reverse thread 6.4 is provided at one end of its outer surface, which is screwed with the internal thread C3.5; a flat position 6.3 is provided at the lower end for easy clamping with an open-end wrench; a plurality of open grooves 6.2 are provided at the other end, and the open grooves 6.2 can expand or contract to the surroundings under external force to form spring pieces matching the number of the open grooves 6.2, and an arc 6.7 is provided at the end of the open grooves 6.2; a boss 6.5 is provided at the front end of each of the spring pieces; an inner cone 6.1 is provided at the front end of the center hole 6.6.

[0030] The top of the push rod 7 is provided with an inner hexagon 7.1 for easy rotation of the hexagonal wrench 8, the outer surface is provided with an outer thread B7.3 screwed to the inner thread B3.4, and the lower end is provided with a cone head 7.2.

[0031] Working process: When in use, the expansion chuck 6 is inserted into the bearing 9 to be removed, and the support sleeve 5 is pressed on the shell 10; the hexagonal wrench 8 is inserted into the hexagonal hole 7.1 of the push rod 7, and the push rod 7 is rotated to move the push rod 7 forward. The cone head 7.2 of the push rod presses the inner cone surface 6.1 of the expansion chuck 6, so that the four spring pieces expand outward and open until the bearing 9 is fully supported, and the boss 6.5 just clamps the bearing 9; fix the lower handle 2, rotate the upper handle 1, so that the axis 3 pulls the expansion chuck 6 to rotate upward until the bearing 9 is pulled out.

[0032] If the bearing 9 is corroded and cannot rotate, the upper handle 1 can be fixed and the lower handle 2 can be rotated to make the support sleeve 5 push the housing 10 to move downward until the housing 10 and the bearing 9 are separated.

[0033] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the above embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The terms used in the description of this application are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0035] It should be noted that in the description of the present application, the directions or positional relationships indicated by the terms such as “front, back, up, down, left, right”, “lateral, vertical, perpendicular, horizontal” and “top, bottom” are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these directions do not indicate or imply that the devices or components referred to must have a specific direction or be constructed and operated in a specific direction, and therefore should not be understood as meaning any other meaning.

[0036] To limit the protection scope of this application, the directional words "inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

Claims

1. A bearing removal tool, characterized in that: It includes an axis, an upper handle is sleeved on the end of the axis, a lower handle is screwed to the outer surface of the axis, the lower handle is connected to a support sleeve, a push rod is screwed inside the axis, the end of the push rod is used to connect a hexagonal wrench, an expansion chuck is screwed inside the axis, the expansion chuck is plugged into the push rod and is used to expand and tighten the bearing to be disassembled, and the support sleeve is connected to a housing containing the bearing; The expansion chuck is provided with a center hole inside, and a reverse thread is provided at one end of its outer surface, which is screwed with the internal thread C. A flat position is provided at its lower end for easy clamping with an open-end wrench, and a plurality of open grooves are provided at the other end. The open grooves can expand or contract to the surroundings under external force to form spring pieces matching the number of the open grooves. An arc is provided at the end of the open groove, and a boss is provided at the front end of each of the spring pieces. An inner conical surface is provided at the front end of the center hole.

2. The bearing removal tool according to claim 1, characterized in that: The upper handle comprises a handle A, both ends of which are screwed with handles A through threaded holes A, and a flat hole is arranged at the center of the handle A.

3. The bearing removal tool according to claim 1, characterized in that: The lower handle includes a handle B, and handles B are screwed together at both ends through threaded holes B. An internal thread A is arranged at the center of the handle B, and an inner sinking platform for placing a thrust bearing is arranged at the lower end of the center, and a groove for placing a retaining ring is arranged at the lower end of the inner sinking platform.

4. The bearing removal tool according to claim 1, characterized in that: The axis includes a flat end at the upper end, an outer surface of which is provided with an external thread A, an inner hole is provided inside, and the lower end of the inner hole is provided with an internal thread B and an internal thread C respectively, the internal thread C is a reverse thread, and the axis is fastened to the flat hole through the flat end.

5. The bearing removal tool according to claim 1, characterized in that: The upper part of the support sleeve is provided with a groove matched with the clamping spring, and the lower end of the support sleeve is provided with an air avoidance hole.

6. The bearing removal tool according to claim 1, characterized in that: The top end of the push rod is provided with an internal hexagon for easy rotation with a hexagonal wrench, the outer surface is provided with an external thread B screwed to the internal thread B, and the lower end is provided with a cone head.

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