Bearing dismounting and mounting device

Abstract

The utility model discloses a bearing dismounting device. Comprising a base, a shaft hole is formed in the middle of the base, and a shaft tube is arranged in the shaft hole; more than two groups of prying claw fixing lugs are arranged on the peripheral side of the base at equal intervals; prying claws are detachably hinged to the prying claw fixing lugs; and a hammer tube is sleeved outside the shaft tube. When the bearing is disassembled, the bottom of the bearing is clamped and fixed through the prying claw, then the hammer tube repeatedly moves up and down to knock the upper surface of the base, and therefore the bearing is pried up from a half shaft through the lever effect of the prying claw. When the bearing is mounted, the hammer tube repeatedly moves up and down to knock the upper surface of the base, so that the bearing is knocked to finish the mounting of the bearing, the whole structure is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to an automobile maintenance tool, in particular to a disassembly and assembly device for bearings on automobile half shafts. Background Art

[0002] During the repair process of an automobile half-axle, it is often necessary to disassemble and assemble the bearings mounted on the axle. Since the inner ring of the bearing is usually installed on the axle with an interference fit, tools are required for disassembly and assembly. Existing bearings are usually disassembled using a claw puller (also known as a puller), while installation is usually performed using a sleeve equivalent to the bearing and a hammer, which is relatively cumbersome to use and operate. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the purpose of the present invention is to provide a bearing disassembly and assembly device.

[0004] To achieve the above-mentioned purpose, the bearing disassembly and assembly device of the present invention comprises a base, an axial hole is provided in the middle of the base, and an axial tube is provided in the axial hole;

[0005] Two or more sets of pry claw fixing ears are arranged at equal intervals around the base;

[0006] A pry claw is detachably hinged on the pry claw fixing ear;

[0007] A hammer tube is provided on the outer sleeve of the shaft tube.

[0008] Furthermore, each group of pry claw fixing ears has two, and the two pry claw fixing ears in each group are arranged at intervals. Pin holes are arranged oppositely on the two pry claw fixing ears, and the pry claw is hinged between the two pry claw fixing ears in each group through the pin.

[0009] Furthermore, the bottom of the base is an arc-shaped recess.

[0010] Furthermore, a hammering platform is provided at the upper end of the base corresponding to the hammer tube.

[0011] Furthermore, the pry claw includes a hinged portion, a pry rod portion and a pry tip portion; the hinged portion is integrally provided with the tail of the pry rod portion; the pry tip portion is located at the front end of the pry rod portion and is angled toward the axial hole; a fulcrum is formed on the side of the distal axial hole at the junction of the pry tip portion and the pry rod portion.

[0012] Furthermore, it also includes a pad, the upper end surface of the pad is adapted to the arc-shaped recessed portion at the bottom of the base, the lower end surface of the pad is a plane, and a through hole with a diameter greater than or equal to the shaft hole is provided in the middle of the pad.

[0013] Furthermore, two or more pin holes are arranged at intervals on the two pry claw fixing ears.

[0014] When removing a bearing, the utility model clamps the bottom of the bearing with a prying claw, and then repeatedly moves the hammer tube up and down to knock the upper surface of the base, thereby leveraging the bearing from the half-shaft. When installing the bearing, the hammer tube repeatedly moves up and down to knock the upper surface of the base, thereby knocking the bearing to complete the installation of the bearing. The overall structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic top view of an embodiment of the present invention.

[0016] Figure 2 This is a schematic top view of another embodiment of the present invention.

[0017] Figure 3 for Figure 2 A schematic cross-sectional view of the embodiment shown in FIG.

[0018] Figure 4 for Figure 3 Schematic diagram of the middle hammer tube striking the base downwards.

[0019] Figure 5 for Figure 2 A schematic cross-sectional view of the embodiment shown when the bearing is installed.

[0020] Figure 6 for Figure 5 Schematic diagram of the middle hammer tube striking the base downwards.

[0021] Figure 7 Schematic diagram of the structure of the pry claw.

[0022] Figure 8 Schematic diagram of the hammer tube structure. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0025] 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 number of the technical features being referred to. Therefore, 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, unless otherwise specified, "plurality" means two or more.

[0026] As shown in the figure, the bearing disassembly and assembly device of the present invention comprises a base 1, with an axial hole provided in the middle of the base and a shaft tube 2 disposed within the axial hole. As shown in the figure, a striking surface (platform) 13 is provided on the upper end surface of the base; an arc-shaped concave surface is provided on the lower surface of the base. A hammer tube 3 is provided on the outer sleeve of the shaft tube; the hammer tube can slide up and down along the shaft tube to strike the base.

[0027] Two or more sets of pry claw fixing ears 11 are evenly spaced around the base, such as Figure 1 There are three sets of pry claws to fix the ears. Figure 2 There are 4 sets of pry claw fixing ears; a pry claw 4 is detachably hinged on the pry claw fixing ears; Figure 1 、 Figure 2 As shown, each group of pry claw fixing ears has two, and the two pry claw fixing ears 11 of each group are arranged at intervals. Pin holes 12 are arranged oppositely on the two pry claw fixing ears, and the pry claw 4 is hinged between the two pry claw fixing ears 11 through the pin 5.

[0028] like Figure 7 As shown, the pry claw 4 includes a hinge portion 41, a pry rod portion 42 and a pry tip portion 43; the hinge portion 41 is integrally provided with the tail of the pry rod portion, which is used to be hinged to the pry claw fixing ear 11 through a pin; the pry tip portion 43 is located at the front end of the pry rod portion facing the axial hole, and the pry tip portion and the pry rod portion are arranged at an angle, which is conducive to the pry claw extending into the lower surface of the bearing; a fulcrum 44 is formed on the side of the distal axial hole at the junction of the pry tip portion and the pry rod portion; it can be seen from the figure that the fulcrum of the pry claw 4 with this structure will move from the inside to the outside as the prying proceeds.

[0029] When disassembling the bearing, Figure 3 and Figure 4 First, place the axle tube 2 onto the axle shaft, and insert the tips of the prying claws 4 into the lower surface of the bearing 8. When all the tips of the prying claws have penetrated the lower surface of the bearing, hold the axle tube with one hand and use the other hand to hold the hammer tube and strike the base 1 downward. This will drive the prying claws 4 to pry the bearing 8 on the axle shaft upward. By repeatedly moving the hammer tube up and down and striking the bottom, the bearing can be pried off the axle shaft.

[0030] When installing bearings, Figure 5 and Figure 6First, place the shaft tube 2 onto the half-shaft, pressing the base 1 against the bearing 8. Hold the shaft tube with one hand and use the other hand to hold the hammer tube and strike the base 1 downward. This transfers force to the bearing 8 through the base, thus achieving the installation of the bearing. In actual use, the pry claw can be removed from the base for better installation of the bearing. Furthermore, a spacer 6 can be added between the base and the bearing. The upper end surface of the spacer 6 is adapted to the arc-shaped recess at the bottom of the base, and the lower end surface of the spacer is flat. A through-hole with a diameter greater than or equal to the shaft hole is provided in the middle of the spacer.

[0031] As a further improvement of the present invention, two or more pin holes 12 are provided at intervals on the two prying claw fixing ears. Like this, the position where the prying claw is installed can be selected according to the size of the bearing to adapt to bearings of different diameters.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0034] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bearing disassembly and assembly device, characterized in that: It comprises a base, an axial hole is provided in the middle of the base, and an axial tube is provided in the axial hole; Two or more sets of pry claw fixing ears are arranged at equal intervals around the base; A pry claw is detachably hinged on the pry claw fixing ear; A hammer tube is provided on the outer sleeve of the shaft tube.

2. The bearing disassembly and assembly device according to claim 1, characterized in that: Each group of pry claw fixing ears has two, and the two pry claw fixing ears in each group are spaced apart. Pin holes are oppositely arranged on the two pry claw fixing ears, and the pry claw is hinged between the two pry claw fixing ears in each group through the pin.

3. The bearing disassembly and assembly device according to claim 1, characterized in that: The bottom of the base is an arc-shaped recess.

4. The bearing disassembly and assembly device according to claim 1, characterized in that: The upper end of the base is provided with a hammering platform corresponding to the hammer tube.

5. The bearing disassembly and assembly device according to claim 1, characterized in that: The pry claw includes a hinged portion, a pry rod portion and a pry tip portion; the hinged portion is integrally provided with the tail of the pry rod portion; the pry tip portion is located at the front end of the pry rod portion and is angled toward the axial hole; a fulcrum is formed on the side of the distal axial hole at the junction of the pry tip portion and the pry rod portion.

6. The bearing disassembly and assembly device according to claim 3, characterized in that: It also includes a pad, the upper end surface of the pad is adapted to the arc-shaped recessed portion at the bottom of the base, the lower end surface of the pad is a plane, and a through hole with a diameter greater than or equal to the shaft hole is provided in the middle of the pad.

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