A mounting auxiliary tool for a rotating shaft of a permanent magnet motor

Abstract

The utility model belongs to permanent magnet motor technical field especially is a kind of installation auxiliary tool of permanent magnet motor rotating shaft, including motor casing, the side of motor casing is annular and is equipped with multiple plug-in slots, the side inner wall of plug-in slot is equipped with and is set up with the slot of carding groove.The utility model is through with the rotating shaft main part passing through the limiting boss on annular base, then with motor casing is installed, and the moving block on annular base is inserted into plug-in slot, in the lock of protective cover is removed, rotating protective cover, protective cover drives gear ring rotation, gear ring drives gear rotation, gear drives corresponding screw rod rotation, screw rod drives corresponding moving block movement, moving block drives corresponding carding block movement, carding block and corresponding carding groove are carded, to fix annular base on motor casing, compared with the traditional multiple bolt connection of carding mode, it is more simple and convenient to operate, just rotating protective cover can complete the synchronous carding of multiple carding blocks, greatly improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet motor technology, specifically to an auxiliary tool for installing a permanent magnet motor shaft. Background Technology

[0002] In the production and maintenance of permanent magnet motors, the installation and disassembly of the motor shaft are critical steps, as the installation quality directly affects the motor's performance, operational stability, and service life. Therefore, ensuring the accuracy, efficiency, and safety of the shaft installation process is of paramount importance. Chinese patented invention CN221806683U discloses an auxiliary tool and system for installing a permanent magnet motor shaft. The system includes an annular base made of a flexible, non-magnetic material. One side of the annular base protrudes to form a limiting boss that matches the annular inclined surface at one end of the mounting hole for the permanent magnet motor shaft in the stator. The limiting boss has a mounting through hole at its center for the permanent magnet motor shaft to pass through. The annular surface inside the mounting through hole is flush with the central area of ​​the mounting hole in the stator. The annular base has at least one mounting structure that can be detachably assembled with the permanent magnet motor housing. During the installation and removal of the permanent magnet motor shaft, this invention ensures that the permanent magnet motor shaft and the permanent magnet motor stator are concentrically positioned, preventing collisions and ensuring the safety of installers.

[0003] However, the device still has some problems. In actual use, multiple bolts are required to connect and fix the device to the motor when installing the ring base. In actual operation, the installer must tighten these bolts one by one. This process is not only time-consuming and labor-intensive, greatly reducing installation efficiency and increasing production and maintenance time costs, but also makes it difficult to ensure that the tightening torque of each bolt is completely consistent. This may cause the ring base to tilt or shift slightly after installation, which will affect the concentricity of the permanent magnet motor shaft and stator, and have a potential adverse effect on the motor performance. Therefore, we propose an installation auxiliary tool for the permanent magnet motor shaft to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an auxiliary tool for installing permanent magnet motor shafts, solving the problems mentioned in the background section.

[0005] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: An auxiliary tool for installing a permanent magnet motor shaft includes a motor housing. One side of the motor housing has multiple annular insertion slots, and the inner wall of one side of each insertion slot has a retaining groove. One side of the motor housing is in movable contact with an annular base. The annular base has an annular main body, and one side of the annular main body has a limiting boss. The left side of the annular base has multiple annular grooves. A lead screw is rotatably connected between the inner walls of the two sides of each groove. A moving block is threaded onto the lead screw. A retaining block is welded to one side of the moving block, and the retaining block engages with a corresponding retaining groove. A protective cover is rotatably connected to the annular base. A gear ring is fixedly connected to the inner wall of one side of the protective cover. The end of the lead screw extends outside the annular base and is welded with a gear that meshes with the gear ring. The annular base has a shaft body, which can be disassembled and assembled from the motor housing via the annular base.

[0006] Furthermore, two positioning rods are welded between the inner walls of the two sides of the groove, and the positioning rods are slidably connected to the moving block.

[0007] Furthermore, a U-shaped block is welded to one side of the annular base, and a guide rod is welded between the inner walls of the two sides of the U-shaped block.

[0008] Furthermore, an L-shaped rod is slidably connected to the guide rod, and a tension spring is welded between one inner wall of the L-shaped rod and one inner wall of the U-shaped block, and the tension spring is movably sleeved on the guide rod.

[0009] Furthermore, a connecting rod is welded to the end of the L-shaped rod, and a locking pin is welded to the end of the connecting rod.

[0010] Furthermore, the protective cover has multiple locking grooves arranged in a ring shape, and the locking pin engages with one of the multiple locking grooves.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides an auxiliary tool for installing a permanent magnet motor shaft, which has the following advantages: This invention involves passing the rotating shaft body through the limiting boss on the annular base and then installing it onto the motor housing. The movable block on the annular base is inserted into the insertion slot. After releasing the protective cover, rotating the protective cover causes the gear ring to rotate, which in turn drives the corresponding lead screw to rotate. The lead screw then moves the corresponding movable block, which in turn moves the corresponding locking block. The locking block engages with the corresponding locking slot, thus fixing the annular base onto the motor housing. Compared to traditional multiple bolt connections, this locking method is simpler and faster. Simply rotating the protective cover allows for the simultaneous locking of multiple locking blocks, greatly improving installation efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional structural diagram of the motor housing of this utility model; Figure 3 This is a three-dimensional structural diagram of the annular base of this utility model; Figure 4 This is a three-dimensional structural diagram of the cut-open protective cover of this utility model; Figure 5 This is a three-dimensional structural diagram of the U-shaped block, guide rod, tension spring, and locking pin connection of this utility model.

[0013] In the diagram: 1. Motor housing; 2. Insertion slot; 3. Slot; 4. Annular base; 5. Annular main body; 6. Limiting boss; 7. Groove; 8. Lead screw; 9. Moving block; 10. Locking block; 11. Protective cover; 12. Gear ring; 13. Gear; 14. Rotating shaft body; 15. Positioning rod; 16. U-shaped block; 17. Guide rod; 18. L-shaped rod; 19. Tension spring; 20. Connecting rod; 21. Locking pin; 22. Locking groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0015] like Figure 1-5 As shown in the figure, an installation auxiliary tool for a permanent magnet motor shaft according to one embodiment of the present invention includes a motor housing 1. A plurality of insertion slots 2 are provided in an annular shape on one side of the motor housing 1. A slot 3 is provided on the inner wall of one side of the insertion slot 2. An annular base 4 is movably contacted on one side of the motor housing 1. An annular main body 5 is provided on the annular base 4. A limiting boss 6 is provided on one side of the annular main body 5. A plurality of grooves 7 are provided in an annular shape on the left side of the annular base 4. A lead screw 8 is rotatably connected between the inner walls of the two sides of the grooves 7. A moving block 9 is threadedly connected to the lead screw 8. A locking block 10 is welded to one side of the moving block 9. The locking block 10 is engaged with the corresponding slot 3. A protective cover 11 is rotatably connected to the annular base 4. A gear ring 12 is fixedly connected to the inner wall of one side of the protective cover 11. The end of the lead screw 8 extends to the outside of the annular base 4 and is welded with a gear 13. The gear 13 meshes with the gear ring 12. A shaft body 14 is provided on the annular base 4. The shaft body 14 is disassembled and assembled from the motor housing 1 through the annular base 4.

[0016] In use, the rotating shaft body 14 is passed through the limiting boss 6 on the annular base 4 and then installed with the motor housing 1. The moving block 9 on the annular base 4 is inserted into the insertion slot 2. After releasing the lock of the protective cover 11, the protective cover 11 is rotated. The protective cover 11 drives the gear ring 12 to rotate, the gear ring 12 drives the gear 13 to rotate, the gear 13 drives the corresponding lead screw 8 to rotate, the lead screw 8 drives the corresponding moving block 9 to move, and the moving block 9 drives the corresponding locking block 10 to move. The locking block 10 is engaged with the corresponding locking slot 3, thereby fixing the annular base 4 to the motor housing 1. Compared with the traditional multiple bolt connection, the locking method is simpler and faster to operate. Only by rotating the protective cover 11 can the synchronous locking of multiple locking blocks 10 be completed, which greatly improves the installation efficiency.

[0017] In some embodiments, two positioning rods 15 are welded between the inner walls of the two sides of the groove 7, and the positioning rods 15 are slidably connected to the moving block 9.

[0018] The positioning rod 15 is set to limit the movement of the moving block 9 and prevent the moving block 9 from shifting.

[0019] In some embodiments, a U-shaped block 16 is welded to one side of the annular base 4, a guide rod 17 is welded between the inner walls of the two sides of the U-shaped block 16, an L-shaped rod 18 is slidably connected to the guide rod 17, a tension spring 19 is welded between the inner wall of one side of the L-shaped rod 18 and the inner wall of one side of the U-shaped block 16, the tension spring 19 is movably sleeved on the guide rod 17, a connecting rod 20 is welded to the end of the L-shaped rod 18, a locking pin 21 is welded to the end of the connecting rod 20, and a plurality of locking grooves 22 are annularly opened on the protective cover 11, and the locking pin 21 is engaged with one of the locking grooves 22.

[0020] After the protective cover 11 is rotated into place, it needs to be locked and fixed to prevent it from rotating due to vibration or other reasons during use, which would cause the locking block 10 to disengage from the locking groove 3. Pull the L-shaped rod 18, and the L-shaped rod 18 slides on the guide rod 17. During the movement of the L-shaped rod 18, the tension spring 19 is stretched and generates elastic force. Continue to pull the L-shaped rod 18, so that the connecting rod 20 welded to the end of the L-shaped rod 18 drives the locking pin 21 to move. When the locking pin 21 moves to align with one of the multiple locking grooves 22 that are opened in a ring on the protective cover 11, release the L-shaped rod 18. Under the elastic force of the tension spring 19, the L-shaped rod 18 will drive the locking pin 21 to engage in the corresponding locking groove 22, thereby achieving the locking and fixing of the protective cover 11 and ensuring the stability of the entire installation structure.

[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary tool for installing a permanent magnet motor shaft, comprising a motor housing (1), characterized in that: The motor housing (1) has multiple insertion slots (2) arranged in a ring on one side. A slot (3) is formed on the inner wall of one side of each insertion slot (2). An annular base (4) is movably contacted on one side of the motor housing (1). An annular main body (5) is provided on the annular base (4). A limiting boss (6) is provided on one side of the annular main body (5). Multiple grooves (7) are arranged in a ring on the left side of the annular base (4). A lead screw (8) is rotatably connected between the inner walls of the two sides of each groove (7). A moving block (9) is threaded onto the lead screw (8). A locking block (10) is welded to one side of the moving block (9). The locking block (10) is engaged with the corresponding locking groove (3). A protective cover (11) is rotatably connected to the annular base (4). A gear ring (12) is fixedly connected to the inner wall of one side of the protective cover (11). The end of the lead screw (8) extends to the outside of the annular base (4) and is welded with a gear (13). The gear (13) meshes with the gear ring (12). A rotating shaft body (14) is provided on the annular base (4). The rotating shaft body (14) is disassembled and assembled from the motor housing (1) through the annular base (4).

2. The installation auxiliary tool for a permanent magnet motor shaft according to claim 1, characterized in that: Two positioning rods (15) are welded between the inner walls of the two sides of the groove (7), and the positioning rods (15) are slidably connected to the moving block (9).

3. The installation auxiliary tool for a permanent magnet motor shaft according to claim 2, characterized in that: A U-shaped block (16) is welded to one side of the annular base (4), and a guide rod (17) is welded between the inner walls of the two sides of the U-shaped block (16).

4. The installation auxiliary tool for a permanent magnet motor shaft according to claim 3, characterized in that: An L-shaped rod (18) is slidably connected to the guide rod (17). A tension spring (19) is welded between one inner wall of the L-shaped rod (18) and one inner wall of the U-shaped block (16). The tension spring (19) is movably sleeved on the guide rod (17).

5. The installation auxiliary tool for a permanent magnet motor shaft according to claim 4, characterized in that: The end of the L-shaped rod (18) is welded with a connecting rod (20), and the end of the connecting rod (20) is welded with a locking pin (21).

6. The installation auxiliary tool for a permanent magnet motor shaft according to claim 5, characterized in that: The protective cover (11) has a plurality of locking grooves (22) arranged in a ring shape, and the locking pin (21) is engaged with one of the locking grooves (22).

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