AC motor stator overhaul winding coil removing device
By designing a wire removal device for AC motor stator winding coils, the coils are cut by alloy saw blades, the problems of low working efficiency and magnet damage in the prior art are solved, and more efficient motor repair and better magnet protection are achieved.
Patent Information
- Application Number
- CN202421486723.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In the prior art, when removing the stator winding coil of the AC motor, the working efficiency is low and the stator magnet is easily damaged, affecting the motor repair quality.
A thread removal device including a drill handle, a connecting block, a threaded rod and an alloy saw blade is designed to cut one end of the coil through the saw blade to reduce heating temperature and resistance and protect the stator magnet.
It improves the working efficiency of coil disassembly, reduces the labor intensity and dust toxic hazards of workers, prevents magnet damage, and improves the quality of motor repair.
Smart Images
Figure CN222763753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of AC motors, and in particular to a device for removing wires from a stator winding coil during overhaul of an AC motor. Background Art
[0002] AC motors are auxiliary components of open-pit mining shovels and cone-type equipment, such as 220KW air compressors, 40KW, 15KW, 7.5KW air pump motors and 1.5KW forced cooling motors. Due to the frequent operation of the motors, the damage to the motors also increases. After the motor is damaged, it is sent to the electrician for repair. When the stator winding coil of the motor is burned out, the coil needs to be rewound, and the original coil needs to be removed.
[0003] The existing coil removal method requires heating the motor stator coil to more than 100 degrees, cutting off one end of the winding coil with iron scissors, and then pulling the winding coil out of the magnet slot with pliers. Since the cut coil is bent and uneven in length, there is great resistance to pulling the coil out of the magnet slot, which is very laborious for workers to operate and has low work efficiency. In addition, since the motor stator coil needs to be heated, it also needs to be smoked and roasted, which will damage the motor stator magnet and greatly reduce the quality of motor repair. Utility Model Content
[0004] According to the above technical problems that the existing coil removal method has low working efficiency and is easy to damage the stator magnet, a device for removing the coil of the stator winding for overhaul of an AC motor is provided. The utility model mainly utilizes a wire removal device to protect the stator magnet.
[0005] The technical means adopted by the utility model are as follows:
[0006] A device for removing winding coils during stator overhaul of an AC motor comprises a drill shank, which is a frustum-shaped drill shank with a diameter gradually increasing from top to bottom. The upper end of the drill shank is connected to a connecting block, and the lower end of the drill shank is connected to a threaded rod. A saw blade is sleeved on the threaded rod, and the saw blade is fixed to the threaded rod through a locking nut.
[0007] Furthermore, the saw blade is an alloy saw blade.
[0008] Furthermore, a blind hole for fixing is provided on the upper portion of the connection block.
[0009] Furthermore, a protective baffle is arranged outside the saw blade.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] The utility model provides a device specially used for cutting the stator coil, so that workers can quickly separate the coil at one end first, and the remaining coil can be easily peeled off after heating, thereby increasing work efficiency, reducing the labor intensity of workers, reducing dust and toxic hazards, preventing magnet damage, and improving maintenance quality.
[0012] When the present device is not used for cutting, it is necessary to heat to about 100 degrees to burn the insulating oil on the copper wire, soften the copper wire, and then cut one end of the copper wire with iron scissors before pulling it out from the stator magnet. After using the present device for cutting, it only needs to be heated to about 30 degrees after cutting the wire, and the insulating oil can be softened to remove the coil, which reduces resistance and makes it easy to pull out the copper wire. By reducing the heating temperature, the effect of protecting the stator magnet is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0014] Figure 1 It is the front view of the device of the utility model.
[0015] Figure 2 This is a schematic diagram of the motor stator before cutting.
[0016] Figure 3 This is a schematic diagram of the motor stator after cutting.
[0017] In the figure: 1. drill handle; 2. connecting block; 3. threaded rod; 4. saw blade; 5. locking nut; 6. blind hole; 7. motor stator; 8. coil to be disassembled. DETAILED DESCRIPTION
[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0021] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0022] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0024] like Figure 1-3 As shown, the utility model provides a winding coil removal device for overhauling the stator of an AC motor, comprising a drill handle 1, the drill handle 1 is a truncated cone, the diameter of the drill handle 1 gradually increases from top to bottom, the upper end of the drill handle 1 is connected to a connecting block 2, the lower end of the drill handle 1 is connected to a threaded rod 3, a saw blade 4 is sleeved on the threaded rod 3, and the saw blade 4 is fixed to the threaded rod 3 by a locking nut 5. The saw blade 4 is an alloy saw blade 4. A blind hole 6 for fixing is provided on the upper part of the connecting block 2. A protective baffle is provided on the outside of the saw blade 4.
[0025] The working method of the utility model comprises the following steps:
[0026] Place the motor stator 7 with the coil 8 to be removed on the work platform so that the coil is on the side of the motor stator 7;
[0027] Fix the motor stator 7 on the working platform;
[0028] The AC motor stator overhaul winding coil removal device is installed on the drilling machine through the connecting block 2 and the threaded rod 3, so that the saw blade 4 is arranged parallel to the central axis direction of the motor stator 7;
[0029] Align the horizontal position of the saw blade 4 with the edge of the magnet of the stator 7, set the vertical position of the saw blade 4 above the coil 8 to be removed, and drop the protective baffle;
[0030] Start the drilling machine, and make the saw blade 4 cut downwards to neatly cut off one end of the coil 8 to be removed;
[0031] The remaining motor stators 7 are sent to a heating furnace for preheating until the coils become soft, and the remaining coils are pulled out with pliers.
[0032] The working process of the utility model is as follows: first, use a radial drilling machine to turn a special drill shank 1, then select a high-quality alloy saw blade 4, install it on the drill shank 1, tighten the locking nut 5, install it on the radial drill shaft, place the motor stator 7 on the work platform, tighten it firmly, use the high-speed speed of the drilling machine to perform cutting work, adjust the drill shank 1 with the saw blade 4 installed to 5 mm from the edge of the stator magnet, cover the protective baffle, turn on the switch, use the shaft to drive the alloy saw blade 4 to rotate at a high speed, cut one end of the coil 8 to be removed neatly, and send the remaining motor stator 7 with the coil to the heating furnace for preheating until the coil becomes soft, and use pliers to pull the coil out, and the motor coil wire removal process is completed.
[0033] After using this device, the original 2 motors were dismantled every day, but now 4-5 motors can be dismantled each time, which improves efficiency, reduces the labor intensity of workers, reduces the harm of smoke and dust, improves the quality of motor repair, and creates more than 100,000 yuan in benefits each year.
[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An AC motor stator overhaul winding coil removal device, characterized in that: The drill shank (1) comprises a drill shank (1), the drill shank (1) is in a truncated cone shape, the diameter of the drill shank (1) gradually increases from top to bottom, the upper end of the drill shank (1) is connected to a connecting block (2), the lower end of the drill shank (1) is connected to a threaded rod (3), a saw blade (4) is sleeved on the threaded rod (3), and the saw blade (4) is fixed to the threaded rod (3) via a locking nut (5).
2. The AC motor stator overhaul winding coil wire removal device according to claim 1, characterized in that: The saw blade (4) is an alloy saw blade (4).
3. The AC motor stator overhaul winding coil wire removal device according to claim 1, characterized in that: The upper part of the connection block (2) is provided with a blind hole (6) for fixing.
4. The AC motor stator overhaul winding coil removal device according to claim 1, characterized in that: A protective baffle is arranged outside the saw blade (4).