Hoisting dismounting device for motor rotor

Abstract

The utility model relates to the technical field of motor equipment maintenance, in particular to a motor rotor lifting dismounting device which comprises a transverse lifting arm, a connecting arm is fixedly connected to the end of the transverse lifting arm, a shaft sleeve is fixedly connected to the bottom end of the connecting arm, and a lifting ring is slidably arranged on the transverse lifting arm in a sleeved mode. A plurality of clamping grooves used for containing lifting rings are formed in the lower surface of the transverse lifting arm, a plurality of containing grooves are formed in the upper surface of the transverse lifting arm, inverted-U-shaped lifting rods are placed in the containing grooves, and hanging parts used for assisting in rotor lifting are arranged at the bottom ends of the inverted-U-shaped lifting rods. According to the utility model, in the process of hoisting the rotor, the mandrels at the two ends of the rotor can support the rotor, that is, the mandrels at the two ends of the rotor are stressed in the process of hoisting the rotor, so that the phenomenon that the mandrels inserted into the shaft sleeve are easy to bend or break due to the fact that the mandrels at one end of the rotor are stressed to support the whole rotor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment maintenance, in particular to a motor rotor lifting and disassembling device. Background Art

[0002] In the past, it took multiple people to cooperate when removing or installing a motor rotor. Two people would insert a pipe into the rotor shaft to be removed and hang the rotor shaft with a wire rope. The person behind would press the pipe down and use the lever principle to pick out the motor rotor. The entire process posed great safety and quality risks and resulted in a lot of waste of labor.

[0003] For example, the Chinese patent announcement number CN218664938U discloses a motor rotor lifting and installation tool. The patent forms a T-shaped lifting bracket through the vertical rod and the main cross rod provided on the equipment, and then cooperates with the center of gravity adjustment plate to lift the motor rotor as a whole, making the maintenance work safer.

[0004] However, the applicant discovered that in the above-mentioned comparative patent, during the process of disassembling and lifting the rotor, the core shaft at one end of the rotor is only inserted into the shaft sleeve for lifting, and the core shaft at the other end of the rotor is suspended in the air, that is, the entire rotor is supported by the core shaft at only one end, so that the core shafts at both ends of the rotor are unevenly stressed, and the core shaft inserted into the shaft sleeve is prone to bending or breaking under the action of the rotor's own weight. Summary of the invention

[0005] In view of this, the purpose of the utility model is to propose a motor rotor lifting and disassembling device to solve the problem that the existing lifting tool only lifts the rotor by inserting the core shaft at one end of the rotor into the sleeve during the process of pulling out the rotor and lifting it, that is, the entire rotor is supported by the core shaft at only one end, so that the core shafts at both ends of the rotor are unevenly stressed, and the core shaft inserted into the sleeve is prone to bending or breaking.

[0006] Based on the above-mentioned purpose, the utility model provides a motor rotor lifting and disassembling device, including a transverse lifting arm, and the end of the transverse lifting arm is fixedly connected to a connecting arm, the bottom end of the connecting arm is fixedly connected to a shaft sleeve, the sliding sleeve on the transverse lifting arm is provided with a lifting ring, the lower surface of the transverse lifting arm is provided with a plurality of slots for placing the lifting rings, the upper surface of the transverse lifting arm is provided with a plurality of placement grooves, an inverted U-shaped lifting rod is placed in the placement groove, and the bottom end of the inverted U-shaped lifting rod is provided with a hanging part for assisting the rotor lifting.

[0007] Preferably, the shaft sleeve is formed by welding a plurality of connecting sleeves of different specifications to each other, and the inner diameters of the plurality of connecting sleeves gradually decrease from top to bottom.

[0008] Preferably, a buckle is fixedly connected to the connecting arm, an auxiliary operating rod is clamped in the buckle, and a sleeve for inserting the auxiliary operating rod is fixedly connected to the shaft sleeve.

[0009] Preferably, a counterweight is detachably mounted on one end of the horizontal suspension arm away from the connecting arm via bolts and nuts.

[0010] Preferably, the hanging part includes a hanging rope, which is fixedly connected to one of the bottom ends of the inverted U-shaped hanging rod. The bottom end of the hanging rope is rotatably connected to a connecting column through a pin shaft. A threaded column is fixedly connected to the connecting column, and an internal threaded hole matching the threaded column is opened on the other bottom end of the inverted U-shaped hanging rod.

[0011] Preferably, a handle is fixedly connected to the top of the inverted U-shaped suspension rod, and a shift block for facilitating the rotation of the connecting column is fixedly connected to the connecting column.

[0012] The beneficial effects of the utility model are as follows: in the process of lifting the rotor, the core shaft at one end of the rotor is first inserted into the shaft sleeve, and then the threaded column drives the lifting rope to pass around from under the other end of the rotor core shaft, and the threaded column is screwed into the threaded hole at the bottom end of the inverted U-shaped lifting rod, so that the lifting rope can support the core shaft at the other end of the rotor, so that in the process of lifting the rotor, the core shafts at both ends of the rotor can support the rotor itself, that is, in the process of lifting the rotor, the core shafts at both ends of the rotor are stressed, avoiding the situation that the entire rotor is supported by only the core shaft at one end of the rotor, which causes the core shaft inserted into the shaft sleeve to be easily bent or broken. 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 only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 This is a structural schematic diagram of a lifting trolley according to an embodiment of the utility model;

[0016] Figure 3 This is a schematic structural diagram of an inverted U-shaped rod and a suspension rope according to an embodiment of the utility model;

[0017] Figure 4 It is an enlarged view of the structure at location A of the embodiment of the present utility model.

[0018] In the figure: 1. horizontal boom; 2. connecting arm; 3. shaft sleeve; 4. lifting ring; 5. slot; 6. placement slot; 7. inverted U-shaped boom; 8. hanging part; 81. lifting rope; 82. connecting column; 83. threaded column; 84. shift block; 9. buckle; 10. auxiliary operating lever; 11. sleeve; 12. counterweight; 13. handle. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a motor rotor lifting and disassembling device comprises a transverse lifting arm 1, and the end of the transverse lifting arm 1 is fixedly connected to a connecting arm 2, the bottom end of the connecting arm 2 is fixedly connected to a shaft sleeve 3, a sliding sleeve on the transverse lifting arm 1 is provided with a lifting ring 4, the lifting ring 4 is connected to an external crane sling and is used to lift the entire tooling, a plurality of slots 5 for placing the lifting ring 4 are provided on the lower surface of the transverse lifting arm 1 close to the connecting arm 2, a plurality of placement slots 6 are provided on the upper surface of the transverse lifting arm 1 away from the connecting arm, an inverted U-shaped suspension rod 7 is placed in the placement slot 6, and a suspension part 8 for assisting the rotor lifting is provided at the bottom end of the inverted U-shaped suspension rod 7, through a plurality of clips The arrangement of the groove 5 makes it possible to change the position of the lifting ring 4 on the horizontal boom 1, that is, to change the force point of the lifting, so as to facilitate adjustment in combination with the center of gravity of the lifting rotor, so that rotors of different specifications can be lifted smoothly. By setting up a plurality of placement grooves 6, the position of the inverted U-shaped suspension rod 7 and the suspension part 8 on the horizontal boom 1 can be changed, so that when the core shaft at one end of the rotor is inserted into the sleeve 3, the suspension part 8 can suspend the core shaft at the other end of the rotor, that is, the position of the lifting ring 4 and the suspension part 8 can be changed according to the actual lifting situation of the rotor, so that the rotor can be lifted smoothly during the lifting process.

[0022] Through the arrangement of the suspension part 8, the suspension part 8 can suspend and support the core shaft of the rotor during the process of lifting the runner. With the cooperation of the shaft sleeve 3, the core shafts at both ends of the rotor can support the rotor itself during the process of lifting the runner, that is, the core shafts at both ends of the rotor are subjected to force during the process of lifting the runner, making the lifting process more stable and smooth.

[0023] In a preferred embodiment of the utility model, the shaft sleeve 3 is formed by welding a plurality of connecting sleeves of different specifications to each other, and the inner diameters of the plurality of connecting sleeves gradually decrease from top to bottom. By setting a plurality of connecting sleeves of different specifications, it is possible to adapt to core shafts of different specifications, thereby facilitating the lifting of rotors of different specifications.

[0024] In another preferred embodiment of the utility model, a buckle 9 is fixedly connected to the connecting arm 2, an auxiliary operating rod 10 is clamped in the buckle 9, and a sleeve 11 for inserting the auxiliary operating rod 10 is fixedly connected to the shaft sleeve 3.

[0025] When the rotor needs to be removed from the stator winding, the auxiliary operating rod 10 on the connecting arm 2 is removed and then inserted into the sleeve 11. The lifting ring 4 is connected to the external crane sling, and the entire tooling is lifted. Then the position of the sleeve 3 is adjusted by the auxiliary operating rod 10 so that the core shaft at one end of the rotor can be inserted into the sleeve 3. Subsequently, the rotor is adjusted by the auxiliary operating rod 10 and smoothly controlled to be parallel to the stator winding with a little gap. The external crane sling moves, and the rotor is removed from the stator winding by controlling the auxiliary operating rod 10 based on the lever principle. The installation is the same. In addition, the auxiliary operating rod 10 can be used to fine-tune the lifting direction during the lifting process.

[0026] In another preferred embodiment of the utility model, a counterweight block 12 is detachably mounted on one end of the horizontal boom 1 away from the connecting arm 2 through bolts and nuts. The position of the moving lifting ring 4 in different slots 5 can change the lifting position, and the counterweight block 12 is used to ensure that the rotor is in a stable state during the lifting process.

[0027] It should be noted that the hanging part 8 includes a hanging rope 81, which is fixedly connected to one of the bottom ends of the inverted U-shaped hanging rod 7. The bottom end of the hanging rope 81 is rotatably connected to a connecting column 82 through a pin shaft. A threaded column 83 is fixedly connected to the connecting column 82, and an internal threaded hole matching the threaded column 83 is opened on the other bottom end of the inverted U-shaped hanging rod 7.

[0028] During the process of removing the rotor from the stator winding, the core shaft at one end of the rotor will be inserted into the sleeve 3. When the core shaft at the other end of the rotor is exposed, the threaded column 83 drives the hanging rope 81 to pass under the other end of the rotor core shaft, and the threaded column 83 is screwed into the threaded hole at the bottom end of the inverted U-shaped hanging rod 7, so that the hanging rope 81 can support the core shaft at the other end of the rotor. In the process of lifting the rotor, the core shafts at both ends of the rotor can support the rotor itself, that is, the core shafts at both ends of the rotor are subjected to force during the lifting of the rotor, avoiding the core shaft inserted into the sleeve being easily bent or broken because only the core shaft at one end of the rotor is subjected to force to support the entire rotor.

[0029] It should be noted that a handle 13 is fixedly connected to the top of the inverted U-shaped suspension rod 7, and a shift block 84 is fixedly connected to the connecting column 82 for facilitating the rotation of the connecting column 82. The setting of the handle 13 facilitates the movement of the inverted U-shaped suspension rod 7 on the horizontal boom 1, and the shift block 84 facilitates the rotation of the connecting column to screw the threaded column 83 into the threaded hole.

[0030] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0031] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A motor rotor lifting and disassembling device, comprising a horizontal lifting arm (1), wherein the end of the horizontal lifting arm (1) is fixedly connected to a connecting arm (2), and the bottom end of the connecting arm (2) is fixedly connected to a shaft sleeve (3), characterized in that: The upper sliding sleeve of the transverse suspension arm (1) is provided with a lifting ring (4), the lower surface of the transverse suspension arm (1) is provided with a plurality of slots (5) for placing the lifting ring (4), the upper surface of the transverse suspension arm (1) is provided with a plurality of placement slots (6), an inverted U-shaped suspension rod (7) is placed in the placement slot (6), and the bottom end of the inverted U-shaped suspension rod (7) is provided with a suspension part (8) for assisting the lifting of the rotor.

2. The motor rotor lifting and disassembling device according to claim 1, characterized in that: The shaft sleeve (3) is formed by welding a plurality of connecting sleeves of different specifications to each other, and the inner diameters of the plurality of connecting sleeves gradually decrease from top to bottom.

3. The motor rotor lifting and disassembling device according to claim 1, characterized in that: A buckle (9) is fixedly connected to the connecting arm (2), an auxiliary operating rod (10) is clamped inside the buckle (9), and a sleeve (11) for inserting the auxiliary operating rod (10) is fixedly connected to the shaft sleeve (3).

4. The motor rotor lifting and disassembling device according to claim 1, characterized in that: A counterweight (12) is detachably mounted on one end of the transverse suspension arm (1) away from the connecting arm (2) via bolts and nuts.

5. The motor rotor lifting and disassembling device according to claim 1, characterized in that: The hanging portion (8) comprises a hanging rope (81), wherein the hanging rope (81) is fixedly connected to one of the bottom ends of the inverted U-shaped hanging rod (7), the bottom end of the hanging rope (81) is rotatably connected to a connecting column (82) via a pin, a threaded column (83) is fixedly connected to the connecting column (82), and an internal threaded hole matching the threaded column (83) is provided on the other bottom end of the inverted U-shaped hanging rod (7).

6. The motor rotor lifting and disassembling device according to claim 5, characterized in that: A handle (13) is fixedly connected to the top of the inverted U-shaped suspension rod (7), and a shifting block (84) for facilitating the rotation of the connecting column (82) is fixedly connected to the connecting column (82).

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