Core-pulling maintenance device of large and medium-sized motor

Abstract

The utility model provides a core-pulling maintenance device of a large and medium-sized motor, which is applied to a motor rotor and comprises a lower semi-cylindrical tube, an upper semi-cylindrical tube, a reinforcing plate, a connecting plate and a cross beam suspension arm, and the lower semi-cylindrical tube and the upper semi-cylindrical tube form a fixing shaft which is of a hollow structure and is used for fixing the rotor; one end of the reinforcing plate is welded on the upper semi-cylindrical pipe, and the other end is welded with a connecting plate; a reinforcing plate is welded to one end of the connecting plate, a beam suspension arm is welded to the other end of the connecting plate, and the reinforcing plate is perpendicular to the beam suspension arm.

Description

Technical Field

[0001] This utility model relates to the field of motor repair technology, and in particular to a core-pulling repair device for large and medium-sized motors. Background Technology

[0002] Chemical plants have many medium to large-sized asynchronous or synchronous motors, with rotors weighing several tons or even tens of tons. These large motors have power ranging from hundreds to tens of thousands of kilowatts, and the gap between the rotor and stator is very small, only a few millimeters. Due to the heavy weight of the rotor, cranes are needed to assist in core removal and maintenance. However, using cranes for core removal and maintenance can easily lead to contact between the rotor and stator, causing damage to the coils. If this happens, it will not only delay the maintenance progress but also increase maintenance costs and affect the normal production of the plant.

[0003] Therefore, a core-removing tool for large and medium-sized motors needs to be designed for motor repair. Although various core-removing tools and methods for motor repair have emerged, existing tools and methods still have several shortcomings. First, existing core-removing tools and methods consume a lot of manpower; typically, five or six people are needed to remove cores from a high-voltage motor, resulting in low efficiency. Second, the process is unstable, making it difficult to control rotor oscillation and potentially damaging the stator and windings. Furthermore, different sizes and models of motors require long steel pipes of varying diameters, necessitating advance preparation. Summary of the Invention

[0004] To address the aforementioned technical problems, a core-pulling and maintenance device for large and medium-sized motors is provided. This utility model mainly utilizes a lower semi-cylindrical tube, an upper semi-cylindrical tube, a reinforcing plate, a connecting plate, and a crossbeam boom to extract the motor rotor for maintenance without damaging the stator and windings.

[0005] The technical means adopted in this utility model are as follows:

[0006] A core-pulling repair device for large and medium-sized motors, applied to the motor rotor, includes: a lower semi-cylindrical tube, an upper semi-cylindrical tube, a reinforcing plate, a connecting plate, and a crossbeam boom, wherein:

[0007] The lower semi-cylindrical tube and the upper semi-cylindrical tube form a fixed shaft, which is a hollow structure used to fix the rotor;

[0008] One end of the reinforcing plate is welded to the upper semi-cylindrical tube, and the other end is welded to a connecting plate;

[0009] A reinforcing plate is welded to one end of the connecting plate, and a crossbeam boom is welded to the other end. The reinforcing plate and the crossbeam boom are perpendicular to each other.

[0010] Furthermore, the beam boom is provided with multiple lifting holes, and the lifting rings are fixed in the lifting holes by pins.

[0011] Furthermore, the lower and upper semi-cylindrical tubes are fixed together by clamps, fixing nuts, and fixing screws.

[0012] Furthermore, the inner walls of the lower and upper semi-cylindrical tubes are lined with rubber gaskets.

[0013] Furthermore, a level is provided at the front end of the beam boom, and the level is used to adjust the levelness of the device.

[0014] Furthermore, the fixed axis formed by the lower and upper semi-cylindrical tubes is parallel to the beam boom.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This utility model provides a core-pulling repair device for large and medium-sized motors, comprising: a lower semi-cylindrical tube, an upper semi-cylindrical tube, a reinforcing plate, a connecting plate, and a crossbeam boom. The reinforcing plate is rectangular and 6 cm thick. A welding groove, 3 cm wide, is recessed on the inner wall of the reinforcing plate to ensure stability. The fixed shaft consists of two hollow semi-circular steel tubes lined with rubber pads to prevent damage to the shaft surface during removal and is suitable for rotors with different shaft diameters. The crossbeam boom has multiple lifting holes, allowing for the attachment of one or more lifting rings as needed. A level is located at the top of the crossbeam boom, allowing adjustment of its levelness.

[0017] Based on the above reasons, this utility model can be widely promoted in fields such as motor repair. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the core-pulling and repair device for large and medium-sized motors in this utility model.

[0020] In the diagram: 1. Shaft; 2. Lower semi-cylindrical tube; 3. Upper semi-cylindrical tube; 4. Clamp; 5. Fixing nut; 6. Fixing screw; 7. Reinforcing plate; 8. Connecting plate; 9. Crossbeam boom; 10. Pin; 11. Lifting ring; 12. Lifting hole; 13. Level. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0025] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0028] like Figure 1 As shown, this utility model provides a core-pulling repair device for large and medium-sized motors, applied to the motor rotor. Figure 1 Shaft 1 in the middle is the motor shaft, including: a lower semi-cylindrical tube 2, an upper semi-cylindrical tube 3, a reinforcing plate 7, a connecting plate 8, and a crossbeam boom 9, wherein:

[0029] The lower semi-cylindrical tube 2 and the upper semi-cylindrical tube 3 form a fixed shaft, which is a hollow structure used to fix the rotor;

[0030] One end of the reinforcing plate 7 is welded to the upper semi-cylindrical tube 3, and the other end is welded to the connecting plate 8;

[0031] A reinforcing plate 7 is welded to one end of the connecting plate 8, and a crossbeam boom 9 is welded to the other end. The reinforcing plate 7 and the crossbeam boom 9 are perpendicular to each other.

[0032] In a preferred embodiment, the beam boom 9 is provided with multiple lifting holes 12, and the lifting ring 11 is fixed in the lifting holes 12 by a pin 10. The lifting ring 11 is used to lift the core-pulling maintenance device by a crane.

[0033] In a specific implementation, as a preferred embodiment, the lower semi-cylindrical tube 2 and the upper semi-cylindrical tube 3 are fixed by clamps 4, fixing nuts 5 and fixing screws 6.

[0034] In a specific implementation, as a preferred embodiment, the inner walls of the lower semi-cylindrical tube 2 and the upper semi-cylindrical tube 3 are lined with rubber gaskets.

[0035] In a specific implementation, as a preferred embodiment, a level 13 is provided at the front end of the beam boom 9, and the level 13 is used to adjust the levelness of the device.

[0036] In a specific implementation, as a preferred embodiment, the fixed axis formed by the lower semi-cylindrical tube 2 and the upper semi-cylindrical tube 3 is parallel to the crossbeam boom 9.

[0037] Example 1

[0038] like Figure 1 As shown, this utility model provides a core-pulling repair tool for large and medium-sized motors. In this embodiment, the reinforcing plate 7 is located between the upper semi-cylindrical tube 3 and the connecting plate 8. A welding groove is present inside the reinforcing plate 7. The upper semi-cylindrical tube 3 is welded to the bottom of the reinforcing plate 7, and the connecting plate 8 is welded to the inside of the welding groove. The welding layer is located on the connecting plate 8. The crossbeam lifting arm 9 is welded to the port of the connecting plate 8, and the lifting hole 12 is provided through the crossbeam lifting arm 9. The reinforcing plate 7 is rectangular and 6 cm thick. The welding groove is concave on the inner wall of the reinforcing plate and is 3 cm wide to ensure stability. The upper semi-cylindrical tube 3 and the lower semi-cylindrical tube 2 are semi-cylindrical and hollow inside. The inner wall of the steel tube is lined with a rubber gasket to prevent damage to the shaft surface when removing the shaft, and it is suitable for rotors with different shaft diameters.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A core-pulling repair device for large and medium-sized motors, applied to the motor rotor, characterized in that, include: The lower semi-cylindrical tube (2), the upper semi-cylindrical tube (3), the reinforcing plate (7), the connecting plate (8), and the crossbeam boom (9) are as follows: The lower semi-cylindrical tube (2) and the upper semi-cylindrical tube (3) form a fixed shaft, which is a hollow structure used to fix the rotor; One end of the reinforcing plate (7) is welded to the upper semi-cylindrical tube (3), and the other end is welded to a connecting plate (8); The connecting plate (8) has a reinforcing plate (7) welded to one end and a crossbeam boom (9) welded to the other end. The reinforcing plate (7) and the crossbeam boom (9) are perpendicular to each other.

2. The core-pulling and repair device for large and medium-sized motors according to claim 1, characterized in that, The beam boom (9) is provided with multiple lifting holes (12), and the lifting ring (11) is fixed in the lifting hole (12) by a pin (10).

3. The core-pulling and repair device for large and medium-sized motors according to claim 1, characterized in that, The lower semi-cylindrical tube (2) and the upper semi-cylindrical tube (3) are fixed by clamps (4), fixing nuts (5) and fixing screws (6).

4. The core-pulling and repair device for large and medium-sized motors according to claim 1, characterized in that, The inner walls of the lower semi-cylindrical tube (2) and the upper semi-cylindrical tube (3) are lined with rubber gaskets.

5. The core-pulling and repair device for large and medium-sized motors according to claim 1, characterized in that, A level (13) is provided at the front end of the beam boom (9), and the level (13) is used to adjust the levelness of the device.

6. The core-pulling and repair device for large and medium-sized motors according to claim 1, characterized in that, The fixed axis formed by the lower semi-cylindrical tube (2) and the upper semi-cylindrical tube (3) is parallel to the beam boom (9).

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