Motor core-pulling maintenance device

Abstract

The utility model provides a motor core-pulling maintenance device, and relates to the field of small motor core-pulling equipment. According to the device, the correction limiting assembly is matched with the electromagnetic plate to accurately limit the direction of the small spindle motor, and then the first multi-stage hydraulic cylinder and the second multi-stage hydraulic cylinder drive the first sleeve and the second sleeve to move correspondingly, so that the electromagnetic ring can penetrate through the driving end and the non-driving end of the motor shaft; when the electromagnetic ring is electrified, the sleeve and the motor shaft can be firmly connected, and stable and efficient core pulling of the rotor can be realized through independent same-speed movement of the two hydraulic cylinders (namely, the first multi-stage hydraulic cylinder contracts, and the second multi-stage hydraulic cylinder extends), so that subsequent maintenance and fine calibration procedures are carried out. In the core pulling process, the abrasion phenomenon between the rotor and the stator can be avoided, and the core pulling effect is better.

Description

Technical Field

[0001] The utility model relates to the field of small motor core pulling equipment, in particular to a motor core pulling maintenance device. Background Art

[0002] After a small spindle motor has been running for a period of time, it needs to be regularly calibrated. At this time, the motor needs to undergo a core pulling maintenance process. After core pulling, the motor stator can be dynamically balanced. Currently, when the spindle motor is disassembled and assembled, the rotor needs to be pulled out and inserted into the stator.

[0003] At present, the core pulling maintenance of small motors is completed by using an overhead crane, a small hoist and a clamp. That is, the overhead crane is first used to drive the small hoist to move close to the position of the small motor that has been fixed in advance with bolts, and then the clamp is used to lock one end of the motor shaft. Then, the small hoist is manually supported and the movement of the overhead crane is controlled to realize the extraction of the rotor. However, the small hoist is prone to shaking during the core pulling process, and it is easy for the rotor and stator to contact and wear each other, thereby damaging the stator and rotor windings. The core pulling effect of small motors needs to be further improved. Utility Model Content

[0004] The purpose of the present invention is to solve the problems raised in the above background technology, and then proposes a motor core pulling maintenance device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A motor core pulling maintenance device includes a processing table, a placement table, an electromagnetic plate, a correction limit assembly, a first multi-stage hydraulic cylinder, a first sleeve, a second multi-stage hydraulic cylinder, a second sleeve, an electromagnetic ring and a sleeper.

[0007] The placing table is arranged on the processing table and an electromagnetic plate is arranged on the placing table;

[0008] The correction limit components are respectively arranged on the electromagnetic plate and the processing table to calibrate the spindle motor from the left and right directions and the front and back directions;

[0009] The first multi-stage hydraulic cylinder is arranged at one end of the processing table and is connected to a first sleeve that matches the driving end of the motor shaft;

[0010] The second multi-stage hydraulic cylinder is arranged at the other end of the processing table and is connected to a second sleeve that cooperates with the non-driving end of the motor shaft;

[0011] Electromagnetic rings with different inner diameters are respectively arranged in the first sleeve and the second sleeve, and the first sleeve and the second sleeve are concentric and arranged opposite each other;

[0012] Two sleepers are arranged on the processing table at intervals and on one side of the placement table.

[0013] Furthermore, the correction limit assembly includes a limit plate, a fixed plate, a telescopic part and a correction plate. Two spaced and parallel limit plates are provided on the electromagnetic plate. The fixed plate is symmetrically provided on the processing table. The fixed plate is provided with a telescopic part. The telescopic part is connected to the correction plate that is distributed opposite and has an arc.

[0014] The above scheme can accurately limit the placement area of the small spindle motor on the electromagnetic plate by correcting the limit component (that is, after the limit is completed, the two ends of the motor shaft are respectively opposite to the first sleeve and the second sleeve), and then the electromagnetic plate is energized to firmly limit the small spindle motor.

[0015] Furthermore, rubber pads are respectively provided at the inner bottom ends of the first sleeve and the second sleeve.

[0016] The above solution can reduce the wear caused by the contact between the sleeve and the two ends of the motor shaft through the rubber pad.

[0017] Furthermore, a buffer pad is provided on the sleeper.

[0018] Furthermore, the middle of the sleeper is low and the two sides are high.

[0019] In the above solution, since the sleepers are lower in the middle and higher on both sides, the rotor will not roll outward after being placed. At the same time, the buffer pad can reduce the wear during the contact between the two and protect the outer surface of the rotor.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] Compared with the existing technology, this device accurately limits the orientation of the small spindle motor through the correction limit component and the electromagnetic plate, and then the first multi-stage hydraulic cylinder and the second multi-stage hydraulic cylinder respectively drive the first sleeve and the second sleeve to move, so that the electromagnetic ring can pass through the driving end and the non-driving end of the motor shaft. Then, the electromagnetic ring is energized to achieve a firm connection between the sleeve and the motor shaft. Then, through the independent and synchronous movement of the two hydraulic cylinders (that is, the first multi-stage hydraulic cylinder contracts and the second multi-stage hydraulic cylinder extends), the rotor can be stably and efficiently core-pulled, and subsequent maintenance and precision calibration processes can be carried out. During the core-pulling process, wear between the rotor and the stator can be avoided, and the core-pulling effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the electromagnetic ring installation;

[0024] Reference numerals:

[0025] 1. Processing table; 11. Placing table; 12. Electromagnetic plate; 13. Limiting plate; 14. Fixing plate; 15. Telescopic member; 16. Correction plate; 21. First multi-stage hydraulic cylinder; 22. First sleeve; 23. Second multi-stage hydraulic cylinder; 24. Second sleeve; 25. Electromagnetic ring; 26. Rubber pad; 3. Sleeper. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0027] like Figure 1 and Figure 2 As shown, a motor core pulling maintenance device includes a processing table 1, a placement table 11, an electromagnetic plate 12, a correction limit assembly, a first multi-stage hydraulic cylinder 21, a first sleeve 22, a second multi-stage hydraulic cylinder 23, a second sleeve 24, an electromagnetic ring 25 and a sleeper 3.

[0028] The placement table 11 is arranged on the processing table 1 and an electromagnetic plate 12 is arranged on the placement table 11;

[0029] The calibration limiter components are respectively arranged on the electromagnetic plate 12 and the processing table 1 to calibrate the spindle motor from the left and right directions and the front and back directions;

[0030] The first multi-stage hydraulic cylinder 21 is provided at one end of the processing table 1 and is connected to a first sleeve 22 that matches the driving end of the motor shaft;

[0031] The second multi-stage hydraulic cylinder 23 is arranged at the other end of the processing table 1 and is connected to a second sleeve 24 that cooperates with the non-driving end of the motor shaft;

[0032] Further optimization of the above embodiment scheme, such as Figure 2 As shown, the inner bottom ends of the first sleeve 22 and the second sleeve 24 are respectively provided with rubber pads 26;

[0033] Electromagnetic rings 25 with different inner diameters are respectively disposed in the first sleeve 22 and the second sleeve 24 , and the first sleeve 22 and the second sleeve 24 are cocentric and face each other.

[0034] Two sleepers 3 are spaced apart and arranged on the processing table 1 and on one side of the placement table 11;

[0035] Further optimization of the above embodiment scheme, such as Figure 2As shown, a cushion pad is provided on the sleeper 3 and the middle of the sleeper 3 is low and the two sides are high. The cushion pad is shown in the figure but is not numbered.

[0036] Further refinement of the embodiment of the present invention, such as Figure 1 As shown, the correction limit assembly includes a limit plate 13, a fixed plate 14, a telescopic member 15 and a correction plate 16. Two spaced and parallel limit plates 13 are provided on the electromagnetic plate 12. The fixed plate 14 is symmetrically provided on the processing table 1. The telescopic member 15 is provided on the fixed plate 14. The telescopic member 15 is connected to the correction plate 16 that is distributed opposite and has an arc.

[0037] It should be noted that the electromagnetic plate 12 , the telescopic member 15 , the first multi-stage hydraulic cylinder 21 , the second multi-stage hydraulic cylinder 23 and the electromagnetic ring 25 are all electrically connected to the controller, which is not shown in the figure.

[0038] The workflow of this utility model:

[0039] Initially, the electromagnetic plate 12 is not powered and the end covers at both ends of the small spindle motor and the fan on the non-drive end are removed in advance (i.e., the drive end and non-drive end of the motor shaft are exposed). Then, the base of the small motor is placed on the electromagnetic plate 12 so that the left and right ends of the base of the small motor are in contact with the limit plates 13 respectively, and the entire small spindle motor is located in the area between the two correction plates 16;

[0040] Then the controller controls the two telescopic members 15 to extend synchronously and drive the two correction plates 16 to move synchronously toward the center, and then the position of the small motor can be accurately limited in a fixed area (the curvature of the correction plate 16 is consistent with that of the base surface of the small spindle motor). After the limitation is completed, the two ends of the motor shaft are respectively facing the first sleeve 22 and the second sleeve 24 (it should be noted that the small spindle motors to be pulled are all of the same model and the heights of the first sleeve 22 and the second sleeve 24 are pre-set). Then the controller controls the electromagnetic plate 12 to be energized to firmly limit the orientation of the small spindle motor;

[0041] Then the controller controls the first multi-stage hydraulic cylinder 21 and the second multi-stage hydraulic cylinder 23 to move respectively so that the electromagnetic rings 25 in the first sleeve 22 and the second sleeve 24 pass through the end of the motor shaft driving end and the end of the motor shaft non-driving end respectively. After both ends pass through, the controller controls the electromagnetic ring 25 to energize to achieve a firm connection between the sleeve and the motor shaft. At this time, the two ends of the motor shaft are in contact with the inner bottom ends of the two sleeves respectively, and the rubber pad 26 can reduce the wear caused by the contact between the two.

[0042] Then the second multi-stage hydraulic cylinder 23 extends and the first multi-stage hydraulic cylinder 21 contracts, and the two always keep the same speed. At this time, the core pulling process of the rotor can be realized. During the core pulling process, the rotor will not shake at all, and will not cause wear between the rotor and the stator to damage the stator and rotor windings, and the core pulling effect is significantly improved.

[0043] When the rotor is completely separated from the small spindle motor, its surface will come into contact with the sleeper 3. At this time, the controller first controls the electromagnetic ring 25 to cut off the power, and then controls the two multi-stage hydraulic cylinders to contract to achieve the separation of the sleeve and the rotor. Since the sleeper 3 is low in the middle and high on both sides, the rotor will not roll outward after being placed. At the same time, the buffer pad can reduce the wear during the contact between the two and protect the outer surface of the rotor.

[0044] Compared with the existing technology, this device accurately limits the orientation of the small spindle motor through the correction limit component and the electromagnetic plate 12, and then the first multi-stage hydraulic cylinder 21 and the second multi-stage hydraulic cylinder 23 respectively drive the first sleeve 22 and the second sleeve 24 to move, so that the electromagnetic ring 25 can pass through the driving end and the non-driving end of the motor shaft. Then, the electromagnetic ring 25 is energized to achieve a firm connection between the sleeve and the motor shaft. Then, through the independent and synchronous movement of the two hydraulic cylinders (that is, the first multi-stage hydraulic cylinder 21 contracts and the second multi-stage hydraulic cylinder 23 extends), the rotor can be stably and efficiently core-pulled, and subsequent maintenance and precision calibration processes can be carried out. During the core-pulling process, wear between the rotor and the stator can be avoided, and the core-pulling effect is better.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor core pulling maintenance device, characterized in that: The invention comprises a processing table (1), a placing table (11), an electromagnetic plate (12), a correction limit assembly, a first multi-stage hydraulic cylinder (21), a first sleeve (22), a second multi-stage hydraulic cylinder (23), a second sleeve (24), an electromagnetic ring (25) and a sleeper (3). A placement table (11) is arranged on the processing table (1), and an electromagnetic plate (12) is arranged on the placement table (11); The calibration limit components are respectively arranged on the electromagnetic plate (12) and the processing table (1) to calibrate the spindle motor from the left and right directions and the front and back directions; A first multi-stage hydraulic cylinder (21) is arranged at one end of the processing table (1) and is connected to a first sleeve (22) that matches the driving end of the motor shaft; A second multi-stage hydraulic cylinder (23) is arranged at the other end of the processing table (1) and is connected to a second sleeve (24) that matches the non-driving end of the motor shaft; Electromagnetic rings (25) with different inner diameters are respectively provided in the first sleeve (22) and the second sleeve (24), and the first sleeve (22) and the second sleeve (24) are cocentric and arranged opposite each other; Two sleepers (3) are arranged on the processing table (1) at intervals and are located on one side of the placement table (11).

2. A motor core pulling maintenance device according to claim 1, characterized in that: The correction limit assembly comprises a limit plate (13), a fixed plate (14), a telescopic member (15) and a correction plate (16); two spaced and parallel limit plates (13) are provided on the electromagnetic plate (12); a fixed plate (14) is symmetrically provided on the processing table (1); a telescopic member (15) is provided on the fixed plate (14); and the telescopic member (15) is connected to the correction plate (16) which is distributed opposite to each other and has an arc.

3. The motor core pulling maintenance device according to claim 1, characterized in that: Rubber pads (26) are respectively provided at the inner bottom ends of the first sleeve (22) and the second sleeve (24).

4. The motor core pulling maintenance device according to claim 1, characterized in that: A buffer pad is provided on the sleeper (3).

5. The motor core pulling maintenance device according to claim 4, characterized in that: The middle of the sleeper (3) is low and the two sides are high.

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