Rapid extraction tool for motor bearing

Abstract

The utility model discloses a quick extraction tool for a motor bearing, which comprises a fixing component, a pull-out component, a pull-out component, a pull-out component and a pull-out component, the first end of the connecting sleeve is connected with the fixing assembly; and the rotating mechanism is connected with the second end of the connecting sleeve, one end of the rotating mechanism abuts against the motor shaft head, and the rotating mechanism rotates to drive the fixing assembly to do horizontal linear movement so as to disassemble the motor bearing. According to the utility model, when the motor bearing is dismounted, the damage to the motor bearing stand and a shaft head processing hole is reduced, the labor intensity of operators is reduced, and the working efficiency is improved; and the quick extraction tool for the motor bearing is simple in structure and convenient to use, so that the motor bearing is more labor-saving and efficient to disassemble.

Description

Technical Field

[0001] This utility model relates to the field of electric motor bearing disassembly technology, specifically to a quick puller for electric motor bearings. Background Technology

[0002] During routine motor maintenance, it is often necessary to disassemble motor bearings. The most commonly used disassembly tool in existing technology is the three-jaw puller. To disassemble the bearing, the lead screw head is first used to hold the machined hole on the shaft end, then the three-jaw puller hooks the bearing, and the lead screw is rotated to remove the bearing. However, because the three-jaw puller is roughly machined and has large errors, the force applied during bearing disassembly is not concentric with the motor shaft. Furthermore, since the force applied by the lead screw head to the motor shaft end is dynamic friction, disassembly is very laborious and causes varying degrees of damage to the motor bearing housing and the machined hole on the shaft end, reducing the motor's operating cycle and increasing routine maintenance costs. Additionally, the claws of commercially available three-jaw pullers are made very wide and thick to increase strength, which is insufficient for the small gap between the inner oil cover and the bearing in explosion-proof motors. Utility Model Content

[0003] The purpose of this invention is to provide a quick puller for electric motor bearings, in order to solve the problems of existing electric motor bearings being difficult to disassemble and easily damaging the bearing housing and shaft head machining holes, thereby reducing the operating cycle of the electric motor and increasing daily maintenance costs.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] This utility model provides a quick puller for electric motor bearings, comprising:

[0006] A fixing component, which is sleeved on the outside of the motor bearing;

[0007] A connecting sleeve, the first end of which is connected to the fixing component;

[0008] A rotating mechanism is connected to the second end of the connecting sleeve. One end of the rotating mechanism abuts against the motor shaft. The rotating mechanism rotates to drive the fixed component to move in a horizontal linear motion in order to disassemble the motor bearing.

[0009] Preferably, the fixing component includes:

[0010] A fixing head, which is sleeved on the outside of the motor bearing;

[0011] A fixing sleeve is fitted onto the outer wall of the fixing head to fix the fixing head.

[0012] Preferably, the fixing head includes two symmetrically arranged semi-circular bearing steel clips, the size of each bearing steel clip corresponding to the outer diameter of the motor bearing.

[0013] Preferably, the main body of the connecting sleeve is a circular annular sleeve structure, and the first end of the connecting sleeve is provided with an outward protrusion, which is engaged in the bearing steel clip.

[0014] Preferably, the fixing sleeve includes a steel ring, the inner diameter of which is larger than the outer diameter of the fixing head.

[0015] Preferably, the rotating mechanism includes:

[0016] A rotating block, wherein a wire hole is provided in the center of the rotating block, a circular retaining plate is provided at one end of the rotating block, and the second end of the connecting sleeve is sleeved on the rotating block;

[0017] A lead screw is disposed within the rotating block and engages with the lead hole;

[0018] A thrust bearing is sleeved on the rotating block and located between the annular retaining plate and the second end of the connecting sleeve;

[0019] A nut is provided on the rotating block and located outside the second end of the connecting sleeve.

[0020] Preferably, a keyway is formed on the outer side wall of the rotating block, and a fixing key is provided in the keyway, through which the nut is connected to the rotating block.

[0021] Preferably, the inner cavity of the connecting sleeve has a groove, and one end of the rotating block is provided with an inner retaining spring, which is disposed in the groove.

[0022] Preferably, the main body of the connecting sleeve is an annular sleeve structure, and the second end of the connecting sleeve is provided with an inward limiting structure, which is located on one side of the rotating block.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model provides a quick puller for electric motor bearings. By setting a fixing component, it changes the point connection during electric motor bearing disassembly in the prior art to a surface connection, increasing the bearing's force-bearing area and avoiding damage to the bearing and bearing seat during disassembly. It also solves the problem that existing disassembly equipment cannot be used due to the small gap between the oil cover and the bearing inside the electric motor. By setting a rotating mechanism, the rotational friction force applied to the electric motor shaft by the lead screw in the prior art is transferred to the thrust bearing and the rotating block, so that this rotational friction force is transformed into static pressure. The operation is more labor-saving and faster, which not only satisfies the disassembly of the bearing, but also protects the machined hole of the shaft head from damage. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings in the following description are one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0026] Figure 1 This is a schematic diagram of the structure of a quick-release device for motor bearings provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a fixing component structure provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a rotating mechanism provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1-fixed head, 2-fixed sleeve, 3-connecting sleeve, 4-thrust bearing, 5-nut, 6-fixing key, 7-rotating block, 8-inner snap ring, 9-lead screw. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3The following detailed description of the specific embodiments of the quick-release device for motor bearings proposed in this utility model will provide further explanation. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, intended only to facilitate and clearly illustrate the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to aid those skilled in the art, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0031] This embodiment mainly addresses the problems of existing electric motor bearings, such as difficulty in disassembly and easy damage to the bearing housing and shaft head machining holes, which reduces the operating cycle of the electric motor and increases daily maintenance costs.

[0032] refer to Figure 1 As shown, this embodiment provides a quick puller for motor bearings, including: a fixing component, which is sleeved on the outside of the motor bearing; a connecting sleeve 3, the first end of which is connected to the fixing component; and a rotating mechanism, which is connected to the second end of the connecting sleeve 3. One end of the rotating mechanism abuts against the motor shaft head, and the rotating mechanism rotates to drive the fixing component to move in a horizontal linear motion to disassemble the motor bearing.

[0033] Specifically, in this embodiment, reference is made to... Figure 2 As shown, the fixing assembly includes: a fixing head 1, which is sleeved on the outside of the motor bearing; and a fixing sleeve 2, which is sleeved on the outer wall of the fixing head 1 for fixing the fixing head 1. The fixing head 1 includes two symmetrically arranged semi-circular bearing steel clips, the size of each bearing steel clip corresponding to the outer diameter of the motor bearing. The fixing sleeve 2 includes a steel ring, the inner diameter of which is larger than the outer diameter of the fixing head 1.

[0034] Specifically, in this embodiment, reference is made to... Figure 3As shown, the rotating mechanism includes: a threaded hole at the center of the rotating block 7, a circular retaining plate at one end of the rotating block 7, and the second end of the connecting sleeve 3 fitted onto the rotating block 7; a lead screw 9, disposed within the rotating block 7 and engaging with the threaded hole; a thrust bearing 4, fitted onto the rotating block 7 and located between the circular retaining plate and the second end of the connecting sleeve 3; and a nut 5, disposed on the rotating block 7 and located outside the second end of the connecting sleeve 3. A keyway is formed on the outer wall of the rotating block 7, and a fixing key 6 is disposed within the keyway, through which the nut 5 is connected to the rotating block 7. A groove is formed in the inner cavity of the connecting sleeve 3, and an inner retaining spring 8 is disposed at one end of the rotating block 7, the inner retaining spring 8 being disposed within the groove of the inner cavity of the connecting sleeve 3 to prevent the rotating block 7 from dislodging.

[0035] In this embodiment, the thrust bearing 4 is used to transfer the force exerted by the lead screw 9 on the motor shaft to the thrust bearing 4 when disassembling the motor bearing, converting sliding friction into rolling friction, thus performing a friction conversion function. It is mounted on the rotating block 7 and located inside the connecting sleeve 3. The nut 5 is a hexagonal nut, which is mounted on the rotating block 7 and forms an integral part with it. The fixing key 6 secures the hexagonal nut.

[0036] In this embodiment, the main body of the connecting sleeve 3 is a circular annular sleeve structure. The first end of the connecting sleeve 3 has an outward protrusion that engages with the bearing steel clip. The second end of the connecting sleeve 3 has an inward limiting structure, which is located on one side of the rotating block 7. (Refer to...) Figure 3 As shown, a limiting structure is provided so that the thrust bearing 4 is installed between the connecting sleeve 3 and the annular retaining plate of the rotating block 7.

[0037] In this embodiment, the lead screw 9 of the rotating mechanism rests statically against the machined hole on the motor shaft. Rotating the hexagonal nut drives the rotating block 7 and the thrust bearing 4 to rotate together, converting the dynamic friction between the lead screw 9 and the machined hole into static pressure. This ensures the integrity of the machined hole while the motor bearing is being disassembled. This reduces damage to the motor bearing housing and the machined hole during disassembly, significantly lowering the motor's maintenance costs.

[0038] In this embodiment, the quick-release motor bearing device is equipped with corresponding fixing components for different bearing models. All components are precision-machined, resulting in high strength, low error, simple structure, and ease of operation. This greatly reduces the workload of maintenance personnel and improves work efficiency.

[0039] In practical applications, when the motor is being repaired, the quick puller for the motor bearing provided in this embodiment was tested and verified. A total of 10 verification tests were conducted on site. The average time for disassembling the front and rear bearings of each explosion-proof motor was about 3 minutes, and no damage was caused to the motor bearing base and shaft head, achieving the expected technical effect.

[0040] In summary, this embodiment proposes a quick-release tool for motor bearings. By setting a fixing component, the point connection during motor bearing disassembly in the prior art is changed to a surface connection, increasing the bearing's force-bearing area and preventing damage to the bearing and bearing housing during disassembly. It also solves the problem of existing disassembly equipment being unusable due to insufficient clearance between the oil cover and the bearing inside the motor. By setting a rotating mechanism, the rotational friction force applied to the motor shaft by the lead screw in the prior art is transferred to the thrust bearing and the rotating block, transforming this rotational friction force into static pressure. This makes operation more labor-saving and faster, satisfying the disassembly of the bearing while protecting the machined hole at the shaft end from damage. By setting a connecting sleeve, the fixing component and the rotating mechanism are tightly connected, providing stable support. The quick-release tool for motor bearings provided in this embodiment is used for rapid disassembly of motor bearings, reducing damage to the motor bearing housing and the machined hole at the shaft end during disassembly, while also reducing the labor intensity of operators and improving work efficiency. Furthermore, the quick-release tool for motor bearings has a simple structure and is easy to use, making motor bearing disassembly work more labor-saving, safer, and more efficient.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0042] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the block diagrams in the accompanying drawings show apparatuses and methods according to various embodiments herein. It should be noted that combinations of blocks in the block diagrams can be used to perform specific functions or actions.

[0043] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A quick-release device for electric motor bearings, characterized in that, include: A fixing component, which is sleeved on the outside of the motor bearing; A connecting sleeve, the first end of which is connected to the fixing component; A rotating mechanism is connected to the second end of the connecting sleeve. One end of the rotating mechanism abuts against the motor shaft. The rotating mechanism rotates to drive the fixed component to move in a horizontal linear motion in order to disassemble the motor bearing.

2. The quick-release device for motor bearings as described in claim 1, characterized in that, The fixing component includes: A fixing head, which is sleeved on the outside of the motor bearing; A fixing sleeve is fitted onto the outer wall of the fixing head.

3. The quick-release device for motor bearings as described in claim 2, characterized in that, The fixing head includes two symmetrically arranged semi-circular bearing steel clips, the size of which corresponds to the outer diameter of the motor bearing.

4. The quick-release device for motor bearings as described in claim 2, characterized in that, The main body of the connecting sleeve is a circular sleeve structure. The first end of the connecting sleeve is provided with an outward protrusion, which is engaged in the bearing steel clip.

5. The quick-release device for motor bearings as described in claim 2, characterized in that, The fixing sleeve includes a steel ring, the inner diameter of which is larger than the outer diameter of the fixing head.

6. The quick-release device for motor bearings as described in claim 1, characterized in that, The rotating mechanism includes: A rotating block, wherein a wire hole is provided in the center of the rotating block, a circular retaining plate is provided at one end of the rotating block, and the second end of the connecting sleeve is sleeved on the rotating block; A lead screw is disposed within the rotating block and engages with the lead hole; A thrust bearing is sleeved on the rotating block and located between the annular retaining plate and the second end of the connecting sleeve; A nut is provided on the rotating block and located outside the second end of the connecting sleeve.

7. The quick-release device for motor bearings as described in claim 6, characterized in that, A keyway is provided on the outer side wall of the rotating block, and a fixing key is provided in the keyway. The nut is connected to the rotating block through the fixing key.

8. The quick-release device for motor bearings as described in claim 6, characterized in that, The inner cavity of the connecting sleeve has a groove, and one end of the rotating block is provided with an inner retaining spring, which is disposed in the groove.

9. The quick-release device for motor bearings as described in claim 6, characterized in that, The main body of the connecting sleeve is a circular annular sleeve structure, and the second end of the connecting sleeve is provided with an inward limiting structure, which is located on one side of the rotating block.

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