A high-voltage motor rotor pulling and rotating stabilizing device

Abstract

The utility model relates to motor rotor extraction stable tool technical field discloses a high -voltage motor rotor extraction stabilizing device, including slide rail and slide sleeve, both ends side of slide rail all weld fixedly have side plate, the side of side plate is fixed with mounting plate through connecting piece, the outer ring of slide sleeve is set up with a plurality of and can slide and is placed in the slide rail, the four edges of slide sleeve inside all are installed with supporting wheel, supporting wheel all support in the surface of slide rail, the diagonal of slide sleeve side edge top and below are fixed with upper clamping rod and lower clamping rod respectively, upper clamping rod and lower clamping rod all are L shape. The utility model technical scheme is installed in the above of motor rotor through the setting slide rail, the sling of travelling crane passes through upper clamping rod and lower clamping rod of slide sleeve side edge and is connected to the lifting tool of rotor, when extracting rotor, travelling crane drives the movement of sling, uses upper clamping rod and lower clamping rod to limit the position of sling, and under the effect that slide sleeve slides outside slide rail, makes the stable movement of sling in the direction of slide rail and avoids left and right swing, makes rotor stable and is extracted to avoid knock.

Description

Technical Field

[0001] This utility model relates to the technical field of motor rotor stabilization tools, specifically a high-voltage motor rotor stabilization device. Background Technology

[0002] Rotor removal from a high-voltage motor is a crucial step in motor maintenance. It is primarily used for internal repairs of large or faulty motors. Due to the large size and weight of high-voltage motors, and the extremely small gap between the stator and rotor, the rotor removal process requires extreme caution to prevent damage from impacts. Specialized tools such as dummy shafts, slide rails, and cranes are typically used to ensure the rotor is removed smoothly. This process demands highly experienced technicians who can handle any unexpected situations. After successful rotor removal, the motor stator and rotor can be thoroughly inspected and repaired to restore motor performance and extend its service life. This is an important measure to ensure stable motor operation.

[0003] When extracting the rotor, a crane is used to lift one end of the rotor with slings and pull it outwards. However, the bottom of the crane slings is quite far from the crane itself, so the slings are prone to swaying to either side in the direction of extraction during the lifting process. Furthermore, the small gap between the rotor and stator makes them susceptible to collisions. Therefore, we propose a rotor extraction stabilization device for high-voltage motors. Utility Model Content

[0004] The purpose of this utility model is to provide a high-voltage motor rotor stabilization device. By setting a slide rail installed above the motor rotor, the sling of the trolley passes through the upper and lower clamps on the side of the slide sleeve and is connected to the rotor lifting device. When the rotor is pulled out, the trolley drives the sling to move. The upper and lower clamps limit the sling, and the sling moves stably in the direction of the slide rail under the action of the slide sleeve sliding outside the slide rail, avoiding left and right swaying. This allows the rotor to be pulled out stably without collision, solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage motor rotor stabilizing device, comprising a slide rail and a sliding sleeve, wherein side plates are welded and fixed to both ends of the slide rail, and mounting plates are fixed to the sides of the side plates via connectors; the sliding sleeve is provided with multiple slidably fitted onto the outer ring of the slide rail, and support wheels are installed on all four sides inside the sliding sleeve, with the support wheels supporting the surface of the slide rail; upper and lower locking rods are fixed diagonally above and below the sides of the sliding sleeve, respectively, and both the upper and lower locking rods are L-shaped, with the upper and lower locking rods bent laterally in opposite directions.

[0006] By adopting the above technical solution, when the gantry crane moves the sling and pulls the rotor outward through the lifting device, the sling is limited by the upper and lower clamps, and moves stably in the pulling direction under the action of the sliding sleeve sliding on the outer ring of the slide rail, avoiding swaying to both sides in the pulling direction and avoiding collision between the motor rotor and the stator.

[0007] Optionally, the connecting member is a connecting rod, which is fixed between the mounting plate and the side plate by welding.

[0008] Optionally, the connector is an electro-hydraulic actuator, with its two ends fixedly connected to the mounting plate and the side plate, respectively.

[0009] By adopting the above technical solution, the electro-hydraulic actuator can retract the slide rail when not in use to avoid obstruction.

[0010] Optionally, the outer rings of the upper and lower locking rods are fitted with rubber sleeves, and the inner side of the rubber sleeves abuts against the outer surfaces of the upper and lower locking rods.

[0011] By adopting the above technical solution, the rubber sleeve avoids significant wear between the sling and the upper and lower clamps.

[0012] Optionally, the inner surface of the sleeve at the support wheel is provided with an inner groove, and the support wheel is installed in the inner groove.

[0013] By adopting the above technical solution, the presence of support rollers can avoid a large gap between the sliding sleeve and the slide rail.

[0014] Optionally, the surface of the mounting plate is provided with perforations that penetrate the mounting plate.

[0015] By adopting the above technical solution, the expansion bolt can be installed and locked by observing the mounting plate through a perforation.

[0016] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0017] 1. The technical solution of this application is to install a slide rail above the motor rotor. The sling of the gantry crane passes through the upper and lower clamps on the side of the slide sleeve and is connected to the rotor lifting device. When the rotor is pulled out, the gantry crane drives the sling to move. The upper and lower clamps limit the sling, and the sling moves stably in the direction of the slide rail under the action of the slide sleeve sliding outside the slide rail to avoid swaying from side to side, so that the rotor is pulled out stably and avoids collision.

[0018] 2. The technical solution of this application uses an electro-hydraulic actuator as a connector to install the slide rail. After use, the electro-hydraulic actuator can drive the slide rail to retract close to the wall surface, so as to avoid the slide rail getting in the way when not in use.

[0019] 3. The technical solution of this application avoids excessive wear between the upper and lower clamps and the sling by fitting rubber sleeves around the outer rings of both the upper and lower clamps. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the high-voltage motor rotor stabilization device of this utility model;

[0022] Figure 2 This is a schematic diagram of the sliding sleeve structure of the high-voltage motor rotor stabilizing device of this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the first embodiment of the high-voltage motor rotor stabilization device of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection structure between the sliding sleeve and the sliding rail of the high-voltage motor rotor stabilizing device of this utility model.

[0025] In the diagram: 1. Slide rail; 11. Side plate; 12. Connecting rod; 13. Electro-hydraulic actuator; 14. Mounting plate; 141. Perforation; 2. Sliding sleeve; 21. Upper locking rod; 22. Lower locking rod; 23. Inner groove; 24. Support roller; 3. Rubber sleeve. Detailed Implementation

[0026] Example 1

[0027] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides a technical solution: a high-voltage motor rotor stabilization device, including a slide rail 1 and a sliding sleeve 2. Side plates 11 are welded and fixed to both ends of the slide rail 1. A connecting rod 12 is welded and fixed to the side of the side plate 11, and a mounting plate 14 is welded and fixed to the end of the connecting rod 12. A through hole 141 is opened on the surface of the mounting plate 14, and the through hole 141 penetrates the mounting plate 14. In use, the mounting plate 14 is made to contact the inner wall surface of the side of the high-voltage motor room. An expansion bolt is used to penetrate the through hole 141 and lock it to the wall surface, thereby achieving lateral locking of the slide rail 1 and making the slide rail 1 parallel to the axis of the high-voltage motor rotor.

[0028] The sliding sleeve 2 is provided with multiple slidable sleeves on the outer ring of the slide rail 1. The upper and lower diagonal sides of the sliding sleeve 2 are respectively fixed with upper locking rod 21 and lower locking rod 22. Both upper locking rod 21 and lower locking rod 22 are L-shaped and are bent laterally in opposite directions. The slide rail 1 is slightly off to the side directly above the rotor shaft, ensuring that the center position of the upper locking rod 21 and lower locking rod 22 on the side of the sliding sleeve 2 is directly above the shaft of the high-voltage motor rotor.

[0029] When it is necessary to use a crane to pull out the rotor with slings, the slings pass through the inner sides of the upper clamp 21 and the lower clamp 22 in sequence, and then connect to the rotor lifting device. During the process of the crane moving and pulling out the rotor with the slings, the slings are positioned between the upper clamp 21 and the lower clamp 22 for limiting, and move stably as the sliding sleeve 2 slides on the outer ring of the slide rail 1, so as to prevent the rotor from swaying to both sides in the pulling direction and causing it to touch the motor stator. Multiple sliding sleeves 2 are provided, which can stabilize multiple slings at the same time.

[0030] In addition, support wheels 24 are installed on all four sides inside the sliding sleeve 2. The inner surface of the sliding sleeve 2 at the support wheel 24 is provided with an inner groove 23. The support wheel 24 is installed in the inner groove 23. The support wheel 24 is supported on the surface of the slide rail 1, making the sliding sleeve 2 more stable in the sliding position of the outer ring of the slide rail 1 and reducing the friction between the sliding sleeve 2 and the slide rail 1.

[0031] Both the upper clamping rod 21 and the lower clamping rod 22 are fitted with rubber sleeves 3 on their outer rings. The inner side of the rubber sleeves 3 is pressed against the outer surface of the upper clamping rod 21 and the lower clamping rod 22. When the sling passes through the inner side of the upper clamping rod 21 and the lower clamping rod 22, it avoids large wear between the sling and the upper clamping rod 21 and the lower clamping rod 22.

[0032] Example 2

[0033] After the rotor extraction is completed, slide rail 1 remains above the motor rotor shaft, which may be obstructive. To solve this problem, this application proposes a second embodiment. Please refer to [link to embodiment]. Figure 3 Without changing any other structural features, the connecting rod 12 is replaced with an electro-hydraulic actuator 13. The two ends of the electro-hydraulic actuator 13 are fixedly connected to the mounting plate 14 and the side plate 11, respectively. When the electro-hydraulic actuator 13 extends to its maximum length, its length is the same as that of the connecting rod 12. After use, the sling can be removed from the inside of the upper clamp 21 and the lower clamp 22. Then, the slide rail 1 can be retracted close to the wall surface using the electro-hydraulic actuator 13.

[0034] In use, the mounting plate 14 is placed against the inner side wall of the high-voltage motor room. After the expansion bolt passes through the hole 141, it is locked to the wall surface, thereby achieving lateral locking of the slide rail 1 and making the slide rail 1 parallel to the shaft of the high-voltage motor rotor. The center position of the upper locking rod 21 and the lower locking rod 22 on the side of the slide sleeve 2 is directly above the shaft of the high-voltage motor rotor. When it is necessary to use a crane to pull out the rotor with the help of the sling, the sling passes through the inner side of the upper locking rod 21 and the lower locking rod 22 in sequence and is then connected to the rotor lifting device. During the process of the crane moving and pulling out the rotor with the sling, the sling is limited between the upper locking rod 21 and the lower locking rod 22 and moves stably as the slide sleeve 2 slides on the outer ring of the slide rail 1, preventing the rotor from swaying to both sides in the pulling direction and causing it to touch the motor stator. More slide sleeves 2 can be locked by the upper locking rod 21 and the lower locking rod 22 to stabilize multiple slings.

Claims

1. A high-voltage motor rotor extraction stabilizing device, comprising a sliding rail (1) and a sliding sleeve (2), characterized in that: Side plates (11) are welded and fixed to both sides of the slide rail (1), and mounting plates (14) are fixed to the sides of the side plates (11) through connectors. The sliding sleeve (2) is provided with multiple slidable sleeves on the outer ring of the slide rail (1). The four sides inside the sliding sleeve (2) are equipped with support wheels (24), and the support wheels (24) are supported on the surface of the slide rail (1). The upper and lower diagonal sides of the sliding sleeve (2) are respectively fixed with upper locking rod (21) and lower locking rod (22). The upper locking rod (21) and lower locking rod (22) are both L-shaped, and the upper locking rod (21) and lower locking rod (22) are bent laterally in opposite directions.

2. The high-voltage motor rotor stabilizing device according to claim 1, characterized in that: The connecting component is a connecting rod (12), which is fixed between the mounting plate (14) and the side plate (11) by welding.

3. The high-voltage motor rotor stabilizing device according to claim 1, characterized in that: The connector is an electro-hydraulic actuator (13), and the two ends of the electro-hydraulic actuator (13) are fixedly connected to the mounting plate (14) and the side plate (11) respectively.

4. The high-voltage motor rotor stabilizing device according to claim 1, characterized in that: The outer rings of the upper clamp (21) and the lower clamp (22) are both fitted with rubber sleeves (3), and the inner side of the rubber sleeves (3) abuts against the outer surfaces of the upper clamp (21) and the lower clamp (22).

5. The high-voltage motor rotor stabilizing device according to claim 1, characterized in that: The inner surface of the sleeve (2) at the support wheel (24) is provided with an inner groove (23), and the support wheel (24) is installed in the inner groove (23).

6. The high-voltage motor rotor stabilizing device according to claim 1, characterized in that: The surface of the mounting plate (14) is provided with a through hole (141) that penetrates the mounting plate (14).

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