Special hoisting equipment for core pulling of large motor

Abstract

The utility model relates to the technical field of hoisting devices special for large motor core pulling, in particular to hoisting equipment special for large motor core pulling, which comprises a base, a supporting rod is fixedly connected to the top surface of the base, a transverse plate is fixedly connected to the top end of the supporting rod, and a guide rail box is fixedly connected to the front side surface of the transverse plate. An embedding cover is movably connected to the outer side surface of the guide rail box in an embedding mode, an electric hoist body is fixedly connected to the bottom surface of the embedding cover, a balance beam is fixedly connected to the lower portion of the electric hoist body through a steel wire rope, a moving block is movably connected to the outer side surface of the balance beam in an embedding mode, and a jackscrew body is connected to the front side surface of a moving plate in a penetrating and threaded mode; through the arrangement of the balance beam, the moving block, the jackscrew body, the supporting boxes, the upper screw rod, the lower screw rod, the pressing plate and the limiting telescopic rod, the distance between the two supporting boxes can be conveniently adjusted according to needs, and therefore the motor rotor hoisting device is suitable for hoisting rotors of different motors.

Description

Technical Field

[0001] This utility model relates to a special hoisting device for core pulling of large motors, belonging to the technical field of special hoisting devices for core pulling of large motors. Background Technology

[0002] Motor core removal typically refers to removing the motor rotor from the stator. During motor repair, it is generally necessary to separate the stator and rotor. Rotor removal involves the removal of the rotor during disassembly and installation. When disassembling the rotor, an extension shaft is usually needed for installation. For small motors, the disassembly and installation of the rotor and extension shaft assembly can be done manually, while for large motors, specialized hoisting equipment is required to assist operators in the disassembly and installation of the rotor.

[0003] Existing technologies have the following problems:

[0004] Existing specialized hoisting equipment for large motor core pulling is inconvenient to use when hoisting extended shaft and rotor assemblies, as it is difficult to adapt the hoisting to the overall length of the extended shaft and rotor. Furthermore, the rotor's stability is generally poor during hoisting, making it unsafe. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a special hoisting device for core pulling in large motors.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special hoisting device for core pulling of large motors, comprising a base, a support rod fixedly connected to the top surface of the base, a horizontal plate fixedly connected to the top of the support rod, a guide rail box fixedly connected to the front surface of the horizontal plate, a sleeve cover movably connected to the outer surface of the guide rail box, an electric hoist body fixedly connected to the bottom surface of the sleeve cover, a balance beam fixedly connected to the bottom of the electric hoist body by a steel wire rope, a moving block movably connected to the outer surface of the balance beam, a top screw body threaded through the front surface of the moving plate, a support box fixedly connected to the bottom surface of the moving block by a fixing rod, upper and lower screws threaded through the top surface of the support box, a pressure plate movably connected to the bottom end of the upper and lower screws by a bearing, and a limiting telescopic rod provided above the pressure plate.

[0007] Preferably, the inner cavity of the guide rail box is provided with a lead screw body, one end of the guide rail box is fixedly connected to a servo motor, one end of the lead screw body is fixedly connected to the output end of the servo motor, and the end of the lead screw body away from the servo motor is movably connected to the guide rail box through a bearing.

[0008] Preferably, a sliding block is fixedly connected to the inner surface of the sleeve cover, the sliding block is threadedly connected to the outer surface of the lead screw body, and a groove matching the structural size of the sliding block is opened on the front surface of the guide rail box.

[0009] Preferably, a snap-fit ​​block is fixedly connected to the top surface of the inner cavity of the sleeve cover, and a slot matching the structural size of the snap-fit ​​block is opened on the top surface of the horizontal plate.

[0010] Preferably, a guide block is fixedly connected to the inner surface of the moving block, and a guide groove matching the structural dimensions of the guide block is opened on the outer surface of the balance beam.

[0011] Preferably, the vertical cross-section of the balance beam is I-shaped, and the front surface of the balance beam has a threaded hole that matches the dimensions of the top screw body.

[0012] Preferably, the telescopic end of the limiting telescopic rod is fixedly connected to the pressure plate, the surface of the pressure plate away from the limiting telescopic rod is coated with an anti-slip soft layer, and the sleeve end of the limiting telescopic rod is fixedly connected to the support box.

[0013] The beneficial effects of this utility model are:

[0014] This utility model, by setting up a balance beam, a moving block, a top screw, a support box, upper and lower screws, a pressure plate, and a limiting telescopic rod, allows for convenient adjustment of the distance between the two support boxes as needed, thus making it suitable for the hoisting of rotors of different motors. By rotating the upper and lower screws, the pressure plate is driven to fall, clamping and limiting rotors of different sizes to prevent them from falling off during hoisting and improving safety. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram showing the details of the separation of the balance beam and the moving block in this utility model;

[0018] Figure 3 This is a structural schematic diagram showing the internal details of the guide rail box in this utility model;

[0019] Figure 4 This is a structural schematic diagram showing the details of the side of the sleeve cover in this utility model;

[0020] In the diagram: 1. Base; 2. Support rod; 3. Horizontal plate; 4. Guide rail box; 5. Sleeve cover; 6. Electric hoist body; 7. Balance beam; 8. Moving block; 9. Top screw body; 10. Support box; 11. Upper and lower screws; 12. Pressure plate; 13. Limiting telescopic rod; 14. Lead screw body; 15. Servo motor; 16. Sliding block; 17. Clamping block; 18. Guide block. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] Please see Figure 1-4 This utility model provides the following technical solution: A special hoisting device for core pulling of large motors, including a base 1. The four corners of the base 1 are fixedly connected to the ground by expansion bolts. A support rod 2 is fixedly connected to the top surface of the base 1. A horizontal plate 3 is fixedly connected to the top of the support rod 2. A guide rail box 4 is fixedly connected to the front surface of the horizontal plate 3. A sleeve cover 5 is movably connected to the outer surface of the guide rail box 4. An electric hoist body 6 is fixedly connected to the bottom surface of the sleeve cover 5. The electric hoist body 6 is a common electric hoist equipment that can be purchased on the market, and will not be described in detail here. A balance beam 7 is fixedly connected to the bottom of the electric hoist body 6 by a steel wire rope. A moving block 8 is movably connected to the outer surface of the balance beam 7. A top screw 9 is threaded through the front surface of the moving plate. A support box 10 is fixedly connected to the bottom surface of the moving block 8 by a fixing rod. An upper and lower screw rod 11 is threaded through the top surface of the support box 10. A pressure plate 12 is movably connected to the bottom end of the upper and lower screw rod 11 by a bearing. A limit telescopic rod 13 is provided above the pressure plate 12.

[0024] In use, when the rotor is pulled out, it is connected to the rotor via a known extension shaft. The extension shaft and the rotor are connected by a coupling. When the extension shaft and the rotor are pulled out, the extension shaft and rotor assembly passes through two support boxes 10. After the extension shaft and rotor assembly is pulled out, the extension shaft and rotor assembly is raised or lowered under the action of the electric hoist body 6.

[0025] As a preferred technical solution of the large motor core-pulling hoisting equipment of this utility model, the inner cavity of the guide rail box 4 is provided with a lead screw body 14. One end of the guide rail box 4 is fixedly connected to a servo motor 15, and one end of the lead screw body 14 is fixedly connected to the output end of the servo motor 15. The end of the lead screw body 14 away from the servo motor 15 is movably connected to the guide rail box 4 through a bearing. A sliding block 16 is fixedly connected to the inner surface of the sleeve cover 5. The sliding block 16 is threadedly connected to the outer surface of the lead screw body 14. The front surface of the guide rail box 4 is provided with a sliding groove that matches the structural size of the sliding block 16. The servo motor 15 drives the lead screw body 14 to rotate. At this time, the combination of the sliding block 16 and the sleeve cover 5 moves left and right.

[0026] As a preferred technical solution of the special hoisting equipment for core pulling of large motors according to this utility model, a locking block 17 is fixedly connected to the top surface of the inner cavity of the sleeve cover 5, and a slot matching the structural size of the locking block 17 is opened on the top surface of the horizontal plate 3; the locking block 17 slides in the slot at the top of the horizontal plate 3 to further limit the sleeve cover 5.

[0027] As a preferred technical solution of the large motor core-pulling hoisting equipment of this utility model, the telescopic end of the limiting telescopic rod 13 is fixedly connected to the pressure plate 12. The surface of the pressure plate 12 away from the limiting telescopic rod 13 is coated with an anti-slip soft layer. The sleeve end of the limiting telescopic rod 13 is fixedly connected to the support box 10. The anti-slip soft layer is made of rubber. A circular placement groove is opened through one side surface of the support box 10. The inner surface of the placement groove is also coated with a rubber anti-slip soft layer. The limiting telescopic rod 13 can prevent the pressure plate 12 from rotating.

[0028] Example 2

[0029] Please see Figure 2 The difference between this embodiment and Embodiment 1 is that:

[0030] A guide block 18 is fixedly connected to the inner surface of the moving block 8, and a guide groove matching the structural dimensions of the guide block 18 is opened on the outer surface of the balance beam 7; the vertical cross section of the balance beam 7 is I-shaped, and a threaded hole matching the structural dimensions of the top screw body 9 is opened on the front surface of the balance beam 7; the moving block 8 is slidably connected to the balance beam 7 by the guide block 18, and the position of the moving block 8 is limited by the threaded hole on the front side of the balance beam 7 through the screw body 14.

[0031] Those skilled in the art can connect all electrical components in this case, such as the servo motor 15 and the electric hoist body 6, and their compatible power supplies via wires. Appropriate controllers, such as PLC controllers or microcontrollers, should be selected based on the actual situation to meet control requirements. Specific connections and control sequences should refer to the working principle described below, where the electrical connections are completed according to the sequential working order of each electrical component. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0032] The working principle and usage process of this utility model are as follows: When the rotor is pulled out, the extended shaft and rotor assembly are inserted through two support boxes 10. The two support boxes 10 are respectively located at the back ends of the extended shaft and rotor. At this time, the upper and lower screws 11 are rotated to drive the pressure plate 12 to fall. At this time, the limiting telescopic rod 13 extends to prevent the pressure plate 12 from rotating, thereby limiting the position of the extended shaft and rotor assembly. Furthermore, the servo motor 15 is controlled to drive the lead screw 14 to rotate. At this time, the sliding block 16 and the sleeve cover 5 assembly move left and right, thereby changing the position of the rotor and the extended shaft. Furthermore, when hoisting rotors of different motors, the distance between the two support boxes 10 can be changed in advance as needed. The top screw 9 is rotated off, and the moving block 8 slides left and right through the guide block 18. After the position of the two moving blocks 8 is limited, the number of threaded holes on the back sides of the two moving blocks 8 is connected, that is, the support boxes 10 are also placed symmetrically. This can be applied to the hoisting of rotors of different sizes.

[0033] 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.

[0034] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A hoisting device for large electric machines, comprising a base (1), characterized in that: The base (1) top surface is fixedly connected with a support rod (2), the support rod (2) top end is fixedly connected with a horizontal plate (3), the horizontal plate (3) front surface is fixedly connected with a guide rail box (4), the guide rail box (4) outer surface is sleeved and movably connected with a sleeve cover (5), the sleeve cover (5) bottom surface is fixedly connected with an electric hoist body (6), the electric hoist body (6) below is fixedly connected with a balance beam (7) through a steel wire rope, the balance beam (7) outer surface is sleeved and movably connected with a moving block (8), the moving block front surface is penetrated and threadedly connected with a top wire body (9), the moving block (8) bottom surface is fixedly connected with a support box (10) through a fixed rod, the support box (10) top surface is penetrated and threadedly connected with an up-down screw rod (11), the up-down screw rod (11) bottom end is movably connected with a pressing plate (12) through a bearing, the pressing plate (12) above is provided with a limiting telescopic rod (13).

2. A hoisting device for large electric machines according to claim 1, characterized in that: The guide rail box (4) inner cavity is provided with a lead screw body (14), one end of the lead screw body (14) is fixedly connected with a servo motor (15), the lead screw body (14) is fixedly connected with the output end of the servo motor (15), and the lead screw body (14) is movably connected to the guide rail box (4) away from one end of the servo motor (15) through a bearing.

3. A hoisting device for large electric machines according to claim 2, characterized in that: The sleeve cover (5) inner surface is fixedly connected with a sliding block (16), the sliding block (16) is sleeved and threadedly connected to the outer surface of the lead screw body (14), and the guide rail box (4) front surface is provided with a sliding groove matched with the structure size of the sliding block (16).

4. The hoisting device for large electric machines according to claim 1, characterized in that: The sleeve cover (5) inner cavity top surface is fixedly connected with a clamping block (17), and the horizontal plate (3) top surface is provided with a clamping groove matched with the structure size of the clamping block (17).

5. The hoisting device for large electric machines according to claim 1, characterized in that: The moving block (8) inner surface is fixedly connected with a guide block (18), and the balance beam (7) outer surface is provided with a guide groove matched with the structure size of the guide block (18).

6. A hoisting apparatus for large electric machines according to claim 1, characterized in that: The balance beam (7) vertical section is in an I-shaped structure, and the balance beam (7) front surface is provided with a threaded hole matched with the structure size of the top wire body (9).

7. The hoisting device for large electric machines according to claim 1, characterized in that: The limiting telescopic rod (13) telescopic end is fixedly connected to the pressing plate (12), the pressing plate (12) away from one side surface of the limiting telescopic rod (13) is coated with an anti-skid soft layer, and the limiting telescopic rod (13) sleeve end is fixedly connected to the support box (10).

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