Tool for axially withdrawing and disassembling inner ring of bearing

Abstract

The utility model discloses a bearing inner ring axial withdrawing dismounting tool, and particularly relates to the field of dismounting tools, the bearing inner ring axial withdrawing dismounting tool comprises an annular positioning shell, four L-shaped fixed connecting rods are fixedly installed at the upper end of the annular positioning shell in an annular array mode, and the ends, close to each other, of the tops of the four L-shaped fixed connecting rods are fixed to the outer end face of an annular mounting shell in an annular array mode; four arc-shaped positioning plates are installed on the inner side of the annular positioning shell in an annular array mode, positioning screws are rotationally installed on the end faces, close to the annular positioning shell, of the arc-shaped positioning plates, the other ends of the positioning screws penetrate through the annular positioning shell, and the positioning screws are in threaded connection with the annular positioning shell. Twisting handles are fixedly mounted at the ends, away from the arc-shaped positioning plates, of the positioning screws. According to the utility model, the rotating shaft and the bearing inner ring can be conveniently and quickly separated, and a quick disassembly and assembly function is realized.

Description

Technical Field

[0001] The utility model relates to the field of disassembly tools, in particular to a disassembly tool for axially withdrawing an inner ring of a bearing. Background Art

[0002] With the development of the machinery industry, more and more mechanical equipment has been widely used. Mechanical applications involving rotational motion often require the use of a shaft and a motor, with the motor's output torque driving the shaft's high-speed rotation. The shaft is a rotating component that requires high-precision machining, and its machining accuracy can affect its balance and stability during rotation. While ensuring high-precision machining of the shaft, further improving its balance and stability during rotation requires the use of bearings and other related accessories.

[0003] At present, the rotating shaft is generally provided with a bearing, and the bearing is installed on the bearing seat. Due to the lubrication and rolling friction characteristics of the bearing, the operating condition of the rotating shaft can remain stable and good for a long time. In order to ensure the stable installation between the bearing and the rotating shaft and prevent loosening due to factors such as mechanical vibration, the inner ring of the bearing generally forms an interference fit with the outer wall of the rotating shaft, that is, the inner ring of the bearing is firmly fixed on the outer wall of the rotating shaft. When the rotating shaft rotates, it can drive the inner ring of the bearing to rotate relative to its outer ring.

[0004] When the rotating shaft has been in use for a long time, it needs regular maintenance and replacement of bearings. Among them, the outer ring and steel balls of the bearing are relatively easy to disassemble, but the inner ring of the bearing is in long-term cooperation with the outer wall of the rotating shaft, and the preload force is large, which is more difficult to disassemble. In the existing technology, the common method for disassembling the inner ring of the bearing is to knock it. However, the knocking method is easy to damage the bearing during the knocking process.

[0005] Therefore, we have made improvements to this problem and proposed a tool for axial withdrawal and disassembly of the bearing inner ring. Utility Model Content

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The utility model discloses a tool for axially withdrawing and disassembling a bearing inner ring, comprising an annular positioning shell, wherein four L-shaped fixing connecting rods are fixedly mounted in an annular array on the upper end of the annular positioning shell, and the tops of the four L-shaped fixing connecting rods are close to each other and fixed in an annular array at one end to the outer end surface of the annular mounting shell;

[0008] Four arc-shaped positioning plates are installed in an annular array on the inner side of the annular positioning shell.

[0009] As a preferred technical solution of the present invention, the arc-shaped positioning plate is rotatably mounted with a positioning screw close to one end surface of the annular positioning shell, and the other end of the positioning screw passes through the annular positioning shell.

[0010] As a preferred technical solution of the present invention, the positioning screw is threadedly connected to the annular positioning shell, and a twist handle is fixedly installed on one end of the positioning screw away from the arc-shaped positioning plate.

[0011] As a preferred technical solution of the present invention, the arc-shaped positioning plate is provided with anti-slip grooves at one end away from the positioning screw.

[0012] As a preferred technical solution of the utility model, four refrigeration boxes are fixedly installed in a circular array on the inner wall of the annular mounting shell, and semiconductor refrigeration plates are installed on the side end faces of the refrigeration boxes. The cooling ends of the semiconductor refrigeration plates pass through the outer end faces of the refrigeration boxes and extend into the interior of the refrigeration boxes, and the heating ends of the semiconductor refrigeration plates are located outside the refrigeration boxes.

[0013] An air outlet is provided at one end of the refrigeration box near the center of the annular mounting shell, and an air outlet pipe is fixedly connected to the air outlet. An air inlet is provided at one end of the refrigeration box away from the center of the annular mounting shell, and an air inlet fan is fixedly connected to the air inlet. The air outlet pipe and the air inlet fan both pass through the inner wall of the annular mounting shell and extend to the outside of the annular mounting shell.

[0014] As a preferred technical solution of the present invention, a plurality of heat dissipation holes are evenly opened on the lower end of the annular mounting shell.

[0015] The beneficial effects of the utility model are:

[0016] 1. This type of bearing inner ring axial withdrawal and disassembly tool can be installed on the rotating shaft, and then the positioning screw is twisted by the twist handle to drive the arc positioning plates, so that the four arc positioning plates move toward the rotating shaft, thereby clamping and fixing the rotating shaft, so that the utility model is fixed on the rotating shaft. The above design facilitates the installation and disassembly of the utility model.

[0017] 2. The inner ring of this type of bearing is axially withdrawn from the disassembly tooling. By starting the inlet fan and the semiconductor refrigeration plate, the inlet fan can blow air to the refrigeration box through the air inlet. The cooling end of the semiconductor refrigeration plate can refrigerate the air entering the refrigeration box and cool it. Finally, it is blown to the shaft through the air outlet and the air outlet pipe to cool the shaft. Through the principle of thermal expansion and contraction, the shaft can be separated from the inner ring of the bearing after contraction, which makes it convenient for the staff to quickly separate the inner ring of the bearing from the shaft.

[0018] The utility model reduces the temperature of the rotating shaft, and the rotating shaft after shrinkage can be separated from the bearing inner ring, so that it is convenient for workers to quickly separate the bearing inner ring from the rotating shaft, and has the function of rapid disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 This is a structural diagram of a tool for axially withdrawing and disassembling a bearing inner ring according to the present invention;

[0021] Figure 2 This is a schematic diagram of the upward structural side of a tool for axially withdrawing and disassembling a bearing inner ring according to the present invention;

[0022] Figure 3 This is a top sectional view of an annular mounting shell in a tool for axially withdrawing and disassembling a bearing inner ring according to the present invention;

[0023] Figure 4 It is a top sectional view of a refrigeration box in a tool for axially withdrawing and disassembling a bearing inner ring of the utility model.

[0024] In the figure: 1. Annular positioning shell; 2. Positioning screw; 3. Twist handle; 4. Arc-shaped positioning plate; 5. L-shaped fixed connecting rod; 6. Exhaust pipe; 7. Inlet fan; 8. Annular mounting shell; 9. Heat dissipation hole; 10. Refrigeration box; 11. Semiconductor refrigeration plate; 12. Air inlet; 13. Air outlet. DETAILED DESCRIPTION

[0025] 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.

[0026] Example: Figure 1-2 As shown, the utility model is a bearing inner ring axial withdrawal and disassembly tool, comprising an annular positioning shell 1, the upper end of which is fixedly mounted with four L-shaped fixed connecting rods 5 in an annular array, and the tops of the four L-shaped fixed connecting rods 5 are close to each other and fixed to the outer end surface of the annular mounting shell 8 in an annular array at one end;

[0027] Four arc-shaped positioning plates 4 are installed in an annular array on the inner side of the annular positioning shell 1 .

[0028] A positioning screw 2 is rotatably mounted on one end surface of the arc-shaped positioning plate 4 close to the annular positioning shell 1 , and the other end of the positioning screw 2 passes through the annular positioning shell 1 .

[0029] The positioning screw 2 is threadedly connected to the annular positioning shell 1 , and a twist handle 3 is fixedly mounted on one end of the positioning screw 2 away from the arc-shaped positioning plate 4 .

[0030] The present invention can be mounted on a rotating shaft, and then the positioning screw 2 can be twisted by twisting the handle 3, thereby driving the arc-shaped positioning plates 4, causing the four arc-shaped positioning plates 4 to move toward the rotating shaft, thereby clamping the rotating shaft and fixing the present invention on the rotating shaft. The above design facilitates the installation and removal of the present invention.

[0031] In this embodiment, an anti-slip groove is provided on one end of the arc-shaped positioning plate 4 away from the positioning screw 2 .

[0032] By providing the anti-slip grooves, the clamping effect of the arc-shaped positioning plate 4 on the rotating shaft can be improved, thereby improving the installation stability of the utility model.

[0033] like Figure 3-4 As shown, four refrigeration boxes 10 are fixedly installed in an annular array on the inner wall of the annular mounting shell 8. Semiconductor refrigeration chips 11 are installed on the side end faces of the refrigeration boxes 10. The cooling end of the semiconductor refrigeration chip 11 passes through the outer end face of the refrigeration box 10 and extends into the interior of the refrigeration box 10. The heating end of the semiconductor refrigeration chip 11 is located outside the refrigeration box 10.

[0034] The refrigeration box 10 is provided with an air outlet 13 at one end close to the center of the annular mounting shell 8, and the air outlet 13 is fixedly connected to the air outlet pipe 6. The refrigeration box 10 is provided with an air inlet 12 at one end away from the center of the annular mounting shell 8, and the air inlet 12 is fixedly connected to the air inlet fan 7. The air outlet pipe 6 and the air inlet fan 7 both pass through the inner wall of the annular mounting shell 8 and extend to the outside of the annular mounting shell 8.

[0035] By starting the air intake fan 7 and the semiconductor refrigeration plate 11, the air intake fan 7 can blow air to the refrigeration box 10 through the air inlet 12. The cooling end of the semiconductor refrigeration plate 11 can refrigerate the air entering the refrigeration box 10 and cool it. Finally, it is blown to the rotating shaft through the air outlet 13 and the air outlet pipe 6 to cool the rotating shaft. Through the principle of thermal expansion and contraction, the rotating shaft can be separated from the inner ring of the bearing after shrinkage, so that the staff can quickly separate the inner ring of the bearing from the rotating shaft.

[0036] A plurality of heat dissipation holes 9 are evenly formed at the lower end of the annular mounting shell 8 .

[0037] By providing the heat dissipation holes 9, the heat dissipation effect on the heating end of the semiconductor refrigeration plate 11 can be improved.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bearing inner ring axial withdrawal disassembly tool, characterized in that: It comprises an annular positioning shell (1), wherein four L-shaped fixed connecting rods (5) are fixedly mounted in an annular array on the upper end of the annular positioning shell (1), and the tops of the four L-shaped fixed connecting rods (5) are close to each other at one end and are fixed in an annular array to the outer end surface of the annular mounting shell (8); Four arc-shaped positioning plates (4) are installed in an annular array on the inner side of the annular positioning shell (1).

2. The bearing inner ring axial withdrawal and disassembly tool according to claim 1, characterized in that: The arc-shaped positioning plate (4) is rotatably mounted with a positioning screw (2) close to one end surface of the annular positioning shell (1), and the other end of the positioning screw (2) passes through the annular positioning shell (1).

3. The bearing inner ring axial withdrawal and disassembly tool according to claim 2, characterized in that: The positioning screw (2) is threadedly connected to the annular positioning shell (1), and a twist handle (3) is fixedly mounted on one end of the positioning screw (2) away from the arc-shaped positioning plate (4).

4. The bearing inner ring axial withdrawal and disassembly tool according to claim 3, characterized in that: The arc-shaped positioning plate (4) is provided with anti-slip grooves at one end away from the positioning screw (2).

5. The bearing inner ring axial withdrawal and disassembly tool according to claim 4, characterized in that: Four refrigeration boxes (10) are fixedly mounted on the inner wall of the annular mounting shell (8) in an annular array, and semiconductor refrigeration sheets (11) are mounted on the side end surfaces of the refrigeration boxes (10). The refrigeration ends of the semiconductor refrigeration sheets (11) pass through the outer end surfaces of the refrigeration boxes (10) and extend into the interior of the refrigeration boxes (10), and the heating ends of the semiconductor refrigeration sheets (11) are located outside the refrigeration boxes (10); An air outlet (13) is provided at one end of the refrigeration box (10) close to the center of the annular mounting shell (8), and an air outlet pipe (6) is fixedly connected to the air outlet (13). An air inlet (12) is provided at one end of the refrigeration box (10) away from the center of the annular mounting shell (8), and an air inlet fan (7) is fixedly connected to the air inlet (12). The air outlet pipe (6) and the air inlet fan (7) both penetrate the inner wall of the annular mounting shell (8) and extend to the outside of the annular mounting shell (8).

6. The tool for axially withdrawing and disassembling the bearing inner ring according to claim 5, characterized in that: The lower end of the annular mounting shell (8) is evenly provided with a plurality of heat dissipation holes (9).

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