Assembling tool for stator and rotor of motor

Abstract

The utility model discloses a motor stator and rotor assembling tool, which comprises an annular main body, the diameter of the inner hole of the main body is smaller than that of the inner hole of the stator, and the inner hole is in interference fit with the outer wall of the rotor; a spigot is arranged on the end face of one end of the main body in an inward protruding mode, the outer diameter of the spigot is smaller than that of the main body, and the spigot and the main body are coaxially arranged. The utility model has the advantages that the inner hole of the annular main body has good perpendicularity, the falling of the rotor is in a vertical line state, the outer wall of the rotor slowly falls down along the inner wall of the main body before the rotor enters the inner hole of the stator, and a gap is always kept between the falling outer wall of the rotor and the inner wall of the stator; and meanwhile, the seam allowance is additionally arranged, so that the air gap between the stator and the rotor is ensured to be uniformly distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of assembling motors, in particular to a combined installation tool for a motor stator and a rotor. Background Technique

[0002] The current combined installation process of the stator and rotor used in the motor industry is direct combined installation. The specific operation is that the worker places the stator on the operation platform, hoists the rotor through the hole positions on the flange (the flange and the rotor have been installed before), and slowly lowers it after aligning with the inner hole of the stator. When the rotor enters the inner hole of the stator, under the action of magnetic force, the rotor has been attracted to the inner wall of the stator, but under the action of gravity, the rotor can still slowly fall to the bottom. During this process, the rotor always rubs against the inner wall of the stator, which will cause a certain degree of damage to the inner walls of both. After the rotor falls to the bottom, the worker then regularizes the rotor by tightening the screws on the flange. However, the damage caused by friction on the joint surface between the stator and the rotor will reduce the uniformity of the gap, making the motor performance unable to reach the optimal. Summary of the Invention

[0003] The main purpose of the utility model is to provide a combined installation tool for a motor stator and a rotor to solve the problem of friction on the joint surface between the rotor and the stator in the prior art.

[0004] To achieve the above purpose, the utility model provides a combined installation tool for a motor stator and a rotor, including an annular main body. The diameter of the inner hole of the main body is smaller than the diameter of the inner hole of the stator, and the inner hole is in interference fit with the outer wall of the rotor; a stop is convexly arranged inward on the end surface of one end of the main body, the outer diameter of the stop is smaller than the outer diameter of the main body, and the stop and the main body are coaxially arranged.

[0005] Further, guiding chamfers are arranged on both sides of the inner ring end surface of the other end of the main body that are symmetric about the center point. The guiding chamfers are provided to guide the rotor to smoothly and easily enter the stator.

[0006] Further, at least a pair of lifting lug holes are arranged on the end surface of the other end of the main body, and the lifting lug holes are symmetrically arranged. By arranging the lifting lug holes, during operation, the combined installation tool is hoisted through the lifting lug holes, and manual handling is not required during the whole operation process, reducing the labor intensity. At the same time, the risk of damage caused by the combined installation tool falling during manual handling is also reduced, and both installation and disassembly are very convenient.

[0007] Further, a plurality of axial mounting grooves are uniformly arranged on the outer wall surrounding the main body. An annular mounting portion is formed on the outer periphery of the inner end of the main body. Mounting holes corresponding to the positions of the inner ends of the axial mounting grooves are circumferentially and uniformly formed on the annular mounting portion. The arrangement of the mounting grooves facilitates the placement of hexagon head screws in the mounting holes along their vertical directions. The assembling tooling is locked on the stator through the hexagon head screws. In this way, when the rotor enters the main body, the assembling tooling will not shift.

[0008] Further, a mounting chamfer is provided on the outer edge of the convex end face of the rabbet. The provision of the mounting chamfer ensures that the rotor will not be stuck by the main body when it drops.

[0009] Compared with the prior art, the advantages of the present utility model are as follows: The assembling tooling is provided with an annular main body. The inner hole of the annular main body has an equal diameter and has good perpendicularity, which can ensure that the rotor drops in a vertical line state. The diameter of the inner hole of the main body is smaller than the diameter of the inner hole of the stator. The inner hole is in interference fit with the outer wall of the rotor. Such an arrangement ensures that before the rotor enters the inner hole of the stator, the outer wall of the rotor slowly drops downward along the inner wall of the main body, and there is always a gap between the dropping outer wall of the rotor and the inner wall of the stator, that is, there will be no fitting or friction between the two. A rabbet is inwardly protruded on the end face of one end of the main body. The outer diameter of the rabbet is smaller than the outer diameter of the main body. The rabbet and the main body are coaxially arranged. The provision of the rabbet ensures uniform distribution of the air gap between the stator and the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0011] Figure 1 is a schematic structure diagram of the assembling tooling of the present utility model Figure 1 ;

[0012] Figure 2 is a schematic structure diagram of the assembling tooling of the present utility model Figure 2 ;

[0013] Figure 3 is a sectional view of the installation of the assembling tooling of the present utility model and the stator;

[0014] Figure 4 is a sectional view of the installation of the rotor using the assembling tooling of the present utility model;

[0015] Figure 5 is a sectional view of the completion of the assembly of the stator and the rotor;

[0016] Among them, the above-mentioned drawings include the following drawing reference numerals:

[0017] Ring-shaped main body 1, rabbet 11, guiding chamfer 12, lifting lug hole 13, axial installation groove 14, installation part 15, installation hole 16, installation chamfer 17. Specific implementation mode

[0018] By providing an assembling tooling for a motor stator and a rotor in an embodiment of the present application, the problem of frictional contact surface between the rotor and the stator in the prior art is solved.

[0019] The technical solution in the embodiment of the present application for solving the problem of frictional contact surface between the rotor and the stator is generally as follows:

[0020] The main body is arranged in a ring shape, the inner hole of the ring-shaped main body is arranged with an equal diameter, has good perpendicularity, and can ensure that the rotor falls in a vertical line state. The diameter of the inner hole of the main body is smaller than the diameter of the inner hole of the stator, and the inner hole is in interference fit with the outer wall of the rotor. Such a setting ensures that before the rotor enters the inner hole of the stator, the outer wall of the rotor slowly falls downward along the inner wall of the main body, and there is always a gap between the falling outer wall of the rotor and the inner wall of the stator, that is, no fitting or friction occurs between the two. A rabbet is convexly arranged inward on the end surface of one end of the main body, the outer diameter of the rabbet is smaller than the outer diameter of the main body, the rabbet and the main body are coaxially arranged, and the setting of the rabbet ensures uniform distribution of the air gap between the stator and the rotor.

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figure 1-2 shown, an assembling tooling for a motor stator and a rotor includes:

[0023] The annular main body 1 has an inner hole with a constant diameter and good perpendicularity, which can ensure that the rotor drops in a vertical line state; the diameter of the inner hole of the main body is smaller than that of the inner hole of the stator, and the inner hole is in interference fit with the outer wall of the rotor. Such a setting ensures that before the rotor enters the inner hole of the stator, the outer wall of the rotor slowly drops downward along the inner wall of the main body, and there is always a gap between the dropping outer wall of the rotor and the inner wall of the stator, that is, there will be no fitting or friction between the two. On the end face of one end of the main body, a rabbet 11 is convexly provided inward. The outer diameter of the rabbet 11 is smaller than the outer diameter of the main body, and the rabbet 11 is coaxially arranged with the main body. The setting of the rabbet 11 ensures uniform distribution of the air gap between the stator and the rotor.

[0024] In order to guide the rotor to smoothly and easily enter the stator. On both sides of the inner ring end face of the other end of the main body that are symmetric about the center point, a guiding chamfer 12 is provided.

[0025] In order to reduce the risk of damage to the assembly tooling dropping during manual handling, a pair of lifting lug holes 13 are provided on the end face of the other end of the main body. Two or more pairs of lifting lug holes 13 can also be provided according to actual needs. In this way, during operation, the lifting lug passes through the lifting lug hole 13 to lift the assembly tooling. With the lifting lug holes 13 symmetrically arranged, it is beneficial to the force balance of the assembly tooling. There is no need for manual handling during the whole operation process, which reduces the labor intensity and is very convenient for both installation and disassembly.

[0026] During specific implementation, 10 axial mounting grooves 14 are uniformly provided on the outer wall of the main body. An annular mounting portion 15 is formed on the outer periphery of the inner end of the main body. Mounting holes 16 corresponding to the inner ends of the axial mounting grooves 14 are circumferentially and uniformly provided on the annular mounting portion 15. The setting of the mounting grooves is beneficial for placing the hexagon screws vertically into the mounting holes 16, and the assembly tooling is locked on the stator through the hexagon screws. In this way, when the rotor enters the main body, the assembly tooling will not shift.

[0027] Furthermore, a circle of mounting chamfers 17 is provided on the outer edge of the convex end face of the rabbet 11. The setting of the mounting chamfers 17 ensures that the rotor will not be stuck by the main body when it drops.

[0028] The working process of this embodiment is as follows:

[0029] Place the stator flat on the ground with the rabbet 11 facing up, install the adapted lifting lugs into the lifting lug holes 13, lift the assembly tooling horizontally by a crane, slowly drop it vertically after aligning with the center of the stator, so that the rabbet 11 of the assembly tooling is completely fitted with the rabbet 11 of the stator, and align the mounting holes 16 with the hole positions on the stator one by one, and fix and lock them with inner hexagon screws. Here, the size of the rabbet 11 of the assembly tooling is set according to the actual working conditions according to the height dimension of the stator enameled wire, as Figure 3 shown.

[0030] Lift the rotor and align it with the inner hole of the annular body 1, then slowly lower it vertically. The bottom of the rotor first contacts the guiding chamfer 121, and under its action, the rotor can easily enter the stator. Then the rotor closely adheres to the inner hole and descends to the bottom of the stator and is flush with the bottom end of the stator. Then use screws to fix the rear flange to the rotor, as Figure 4 shown.

[0031] Loosen the hexagon socket head cap screws on the ten mounting holes 16, and slowly lift the assembling tool vertically through the lifting lugs. The assembly of the stator and the rotor is completed, as Figure 5 shown.

[0032] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here, for example.

[0033] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications may be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A motor stator and rotor assembly tool, characterized in that: The combined tooling comprises: An annular body, wherein the diameter of the inner hole of the body is smaller than the diameter of the inner hole of the stator, and the inner hole is interference fit with the outer wall of the rotor; a stopper is provided on the end surface of one end of the body protruding inwardly, the outer diameter of the stopper is smaller than the outer diameter of the body, and the stopper is coaxially arranged with the body.

2. The motor stator and rotor assembly tool according to claim 1, characterized in that: The inner ring end surface of the other end of the main body is provided with guide chamfers on both sides symmetrically about the center point.

3. A motor stator and rotor assembly tool according to claim 1 or 2, characterized in that: At least one pair of lifting ear holes is arranged on the end surface of the other end of the main body, and the lifting ear holes are symmetrically arranged.

4. The motor stator and rotor assembly tool according to claim 3, characterized in that: A plurality of axial mounting grooves are evenly arranged on the outer wall surrounding the main body, and an annular mounting portion is formed on the outer periphery of the inner end of the main body. Mounting holes corresponding to the positions of the inner ends of the axial mounting grooves are evenly opened on the annular mounting portion in a circumferential direction.

5. The motor stator and rotor assembly tool according to claim 4, characterized in that: A circle of installation chamfer is arranged on the outer edge of the convex end surface of the stop.

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