Device for drawing rotor of high-voltage motor
By designing a high-voltage motor pumping rotor device including cross rods and vertical rods, the problems of complex and high cost extraction of high-voltage motor rotors in the prior art are solved, and the effects of simplicity of operation, high reliability and reduced cost are achieved.
Patent Information
- Application Number
- CN202420195516.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-26
AI Technical Summary
The extraction process of existing high-voltage motor rotors has problems such as complex operation, high cost, strict space requirements and not suitable for all types of motors, resulting in high labor intensity and high safety risks for maintenance personnel.
A high-voltage motor pumping rotor device including cross rods and vertical rods is designed. By welding at a 90-degree angle, supporting bars and reinforcement triangles are added, and multiple hoisting points are set on the cross rods. Stainless steel material is used to simplify operation and Reduce space demand.
It achieves simplicity of operation, reduces labor intensity, improves the reliability and stability of the pumping rotor, reduces the risks to personnel and equipment, and reduces operating costs.
Smart Images
Figure CN222356156U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage motor maintenance, in particular to a device for extracting a rotor of a high-voltage motor. Background Art
[0002] For high-voltage motors such as coal mill motors, ash pump motors, front pump motors, blower motors, belt motors, etc., it is difficult to extract the high-voltage motor rotors in daily troubleshooting or regular maintenance projects. The commonly used method is to use the dummy shaft method to extract large high-voltage motor rotors, but the introduction of the dummy shaft requires a high degree of precision. Any inaccuracy in the axis, alignment or connection may cause performance problems in the motor after reassembly. The dummy shaft method requires the use of more professional equipment, such as hydraulic pullers, precision measuring tools, etc., which are costly. The dummy shaft method is a relatively complex technology that requires professional knowledge and experience. The execution process involves the use of precision tools and a deep understanding of the motor structure and mechanical principles. Operators are required to be proficient in the use of tools and master theoretical knowledge, and the labor cost is also high. In addition, due to the long dummy shaft, it is easy to cause damage to personnel and equipment during operation, and the requirements for space, hoists, and cranes are also much more stringent. The dummy shaft method is not suitable for all types of motors, and some motor designs may not allow this method to be used.
[0003] Therefore, how to design and implement a high-voltage motor rotor extraction device with a simple structure, reduced labor intensity of maintenance personnel, and easy operation has become a technical problem that needs to be solved. Utility Model Content
[0004] The purpose of the utility model is to provide a device for extracting the rotor of a high-voltage motor in order to overcome the defects of the prior art.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A device for extracting a rotor of a high-voltage motor, the device comprising a horizontal bar and a vertical bar; the horizontal bar and the vertical bar are welded together at an angle of 90 degrees; a hoist lifting point for lifting is arranged above the horizontal bar; a support bar for balancing the force and a rotor interface for connecting the rotor are arranged at the bottom of the vertical bar; the support bar and the rotor interface are arranged on the same horizontal axis and are located on both sides of the vertical bar; a fixing plate is arranged on the horizontal bar and the vertical bar; a reinforcement triangle is arranged on the fixing plate to prevent oscillation instability when subjected to force; one end of the reinforcement triangle is fixed to the fixing plate, and the other end is fixed to the horizontal bar.
[0007] Furthermore, there are multiple hoisting points, which are evenly arranged above the crossbar.
[0008] Furthermore, the device is made of stainless steel metal material.
[0009] Compared with the prior art, the utility model has the following advantages:
[0010] (1) The utility model shortens the length of the dummy shaft on the basis of the original dummy shaft and adds support bars and reinforcement triangles. It not only does not take up a lot of space, but also truly saves effort and distance on the original basis. The operation is simpler and clearer than the dummy shaft method, and it is easy to operate and use. It avoids the problems of multiple people working in a large space, difficulty in pulling out the rotor, and high theoretical and practical requirements for the participants. It improves the reliability and stability of rotor pulling out, reduces the labor intensity of maintenance personnel, and reduces the risk of accidental injury to other personnel or equipment.
[0011] (2) The utility model sets a plurality of hoisting points above the cross bar, so that the crane of the lifting device can find the best labor-saving lifting point according to the mechanical principle, thus saving time and labor and reducing operation costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural schematic diagram provided by the utility model.
[0013] The numbers in the figure are as follows:
[0014] 1. Horizontal bar; 2. Vertical bar; 3. Hoist lifting point; 4. Support bar; 5. Rotor interface; 6. Fixed plate; 7. Reinforcement triangle. DETAILED DESCRIPTION
[0015] 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 part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0017] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0018] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0019] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0020] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0021] Example
[0022] like Figure 1 As shown, a device for extracting a rotor of a high-voltage motor comprises a cross bar 1 and a vertical bar 2; the cross bar 1 and the vertical bar 2 are welded together at an angle of 90 degrees; a hoisting point 3 is arranged above the cross bar 1 for lifting and moving the device, and there are multiple hoisting points 3, which are evenly arranged above the cross bar 1, so that the driving of the lifting device can find the best labor-saving lifting point according to the mechanical principle, saving time and labor, and reducing the operating cost; a support bar 4 for balancing the force and a rotor interface 5 for connecting the rotor are arranged at the bottom of the vertical bar 2; the support bar 4 and the rotor interface 5 are arranged on the same horizontal axis and are located on both sides of the vertical bar 2; a fixing plate 6 is arranged on the cross bar 1 and the vertical bar 2 to fix the cross bar 1 and the vertical bar 2 without bending when the rotor is extracted; a reinforcement triangle 7 is arranged on the fixing plate 6 to prevent oscillation instability when subjected to force; one end of the reinforcement triangle 7 is fixed on the fixing plate 6, and the other end is fixed on the cross bar 1; the device is made of stainless steel metal material, has a long service life, and is not easy to be damaged.
[0023] The working principle of the utility model is:
[0024] First, find the best lifting point position, connect the crane with the hoist lifting point 3, lift the device vertically and adjust the direction so that the rotor interface 5 is aligned with the rotor to be pulled out, then control the device to move horizontally close to the high-voltage motor, connect the rotor interface 5 and the rotor, and finally control the device to move horizontally away from the high-voltage motor to slowly pull out the rotor.
[0025] The utility model shortens the length of the dummy shaft on the basis of the original dummy shaft and adds a support rod 4 and a reinforcement triangle 7, which not only does not occupy a large amount of space, but also truly saves effort and distance on the original basis. In addition, the operation is simpler and clearer than the dummy shaft method, and the operation is easy to use. It avoids the problems of multiple people working in a large space, difficulty in pulling out the rotor, and high theoretical and practical requirements for the participants. It improves the reliability and stability of the rotor pulling out, reduces the labor intensity of maintenance personnel, and reduces the risk of accidental injury to other personnel or equipment.
[0026] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A device for extracting a rotor of a high-voltage motor, characterized in that: The device comprises a cross bar (1) and a vertical bar (2); the cross bar (1) and the vertical bar (2) are welded together at an angle of 90 degrees; a hoisting point (3) for lifting is arranged above the cross bar (1); a support bar (4) for balancing the force and a rotor interface (5) for connecting the rotor are arranged at the bottom of the vertical bar (2); the support bar (4) and the rotor interface (5) are arranged on the same horizontal axis and are located on both sides of the vertical bar (2); a fixing plate (6) is arranged on the cross bar (1) and the vertical bar (2); a reinforcement triangle (7) is arranged on the fixing plate (6) for preventing oscillation instability when subjected to force; one end of the reinforcement triangle (7) is fixed on the fixing plate (6), and the other end is fixed on the cross bar (1).
2. A device for extracting a rotor of a high-voltage motor according to claim 1, characterized in that: There are multiple hoisting points (3) which are evenly arranged above the crossbar (1).
3. The device for extracting the rotor of a high-voltage motor according to claim 1, characterized in that: The device is made of stainless steel metal material.