A kind of auxiliary device special for large high-voltage motor turning

Abstract

The application relates to the technical field of mechanical equipment, in particular to an auxiliary device specially used for large high-voltage motor turning, which comprises a supporting disc, a main force applying rod and a secondary force applying rod, three force applying sleeve rods are uniformly and detachably arranged on the periphery of the supporting disc, one of the force applying sleeve rods is detachably provided with the main force applying rod, and the other force applying sleeve rod is detachably provided with the secondary force applying rod; three fixed curved rods are uniformly and detachably arranged around the supporting disc, each of the fixed curved rods is arranged between two adjacent force applying sleeve rods, and the fixed curved rods are detachably provided with fastening sleeve rods. In the application, the main and secondary force applying rods are arranged, workers can cooperate with each other to turn the motor shaft at the two sides of the main shaft of the motor shaft extension end, the operation is simple and convenient, the counterweight is arranged on the main force applying rod, the counterweight can utilize the gravity to reduce the acting force of the workers on the main force applying rod, and the action intensity of the workers is reduced.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, and more specifically to an auxiliary device for turning gears of large high-voltage motors. Background Technology

[0002] In the industrial sector, large bearing-type high-voltage motors are widely used, often serving as the most critical equipment in a unit or even a factory. Therefore, good start-up and maintenance habits are crucial. For such equipment, inspections are typically conducted every 18 months or 2 years during equipment maintenance, with a focus on bearing wear. After inspection, the coupling needs to be disconnected, and the motor run under no-load for several hours to monitor the operating current and bearing temperature, thus verifying the maintenance results. Before trial operation, a no-load rotation test is required, which is generally performed in two ways. First, a large F-wrench is used to rotate the motor. The wrench is engaged with the bolt hole of the back wheel on the motor shaft extension end and applied force. Because large high-voltage motors are very heavy, the engagement point between the F-wrench and the back wheel can easily slip, causing the operator to lose force and the wrench to slip off, posing a significant safety hazard and increasing the risk of injury to the operator. Secondly, using a large on-site crane, workers wrap a long lifting sling around the main shaft at the motor shaft extension end, hang the sling on the crane hook, and jog the crane to make the hook pull the sling vertically upward, thereby driving the motor main shaft to rotate the motor. Because the jogging of the crane generates a vertically upward force, and the force is very large, if not controlled properly, the motor main shaft will be lifted to a certain extent, which will cause irreversible damage to the motor bearing. Bearings are generally custom-made and very expensive. If the internal layer is damaged, the bearing may be scrapped in severe cases. This method is also very risky. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an auxiliary device specifically designed for turning gears of large high-voltage motors.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: an auxiliary device specifically for large high-voltage motor turning gears, comprising a support disc, a main force-applying rod, and a secondary force-applying rod. Three force-applying sleeves are detachably and uniformly arranged around the circumference of the support disc. The main force-applying rod is detachably mounted on one of the force-applying sleeves, and the secondary force-applying rod is detachably mounted on another force-applying sleeve. Three fixed bending rods are detachably and uniformly arranged around the support disc. Each fixed bending rod is positioned between two adjacent force-applying sleeves, and each fixed bending rod is detachably mounted with a fastening sleeve.

[0005] Furthermore, a force-applying clamp is provided at the center of the end of the force-applying sleeve rod away from the supporting disc, and a force-applying sleeve rod groove is provided between the force-applying clamp and the force-applying sleeve rod; the connecting ends of the main force-applying rod and the force-applying sleeve rod are both provided with main force-applying rod grooves, and the connecting ends of the auxiliary force-applying rod and the force-applying sleeve rod are both provided with auxiliary force-applying rod grooves, and both the main force-applying rod and the auxiliary force-applying rod can be inserted into the force-applying sleeve rod grooves.

[0006] Furthermore, a retaining sleeve is provided at the right angle of the front end of the fixed bending rod, and a fixing head of the fixed bending rod is provided inside the retaining sleeve. A fixing groove of the fixed bending rod is provided between the retaining sleeve and the fixing head of the fixed bending rod, and a thread is provided on the outside of the fixing head of the fixed bending rod. A support sleeve is provided at the middle position of the fastening sleeve rod, and a fixing sleeve is provided inside the support sleeve. A threaded fixing sleeve groove is provided inside the fixing sleeve, and the fixing sleeve is threadedly connected to the fixing head of the fixed bending rod.

[0007] Furthermore, a fastening sleeve groove is provided between the support sleeve and the fixing sleeve.

[0008] Furthermore, the fastening sleeve rod has an overall "T-shaped" structure.

[0009] Furthermore, a main force-applying handle is provided at the end of the main force-applying rod, and a secondary force-applying handle is provided at the end of the secondary force-applying rod.

[0010] Furthermore, a counterweight is provided on the main force-applying rod, and the counterweight is located at the front end of the main force-applying grip.

[0011] Furthermore, both the main force-applying grip and the secondary force-applying grip are provided with anti-slip textures.

[0012] Furthermore, a force-applying sleeve fixing head is provided at the connection between the force-applying sleeve rod and the support disc, and the outer side of the force-applying sleeve rod fixing head is provided with an external thread that is threadedly connected to the support disc.

[0013] Furthermore, a fastening head is provided at the connection between the fixed bent rod and the supporting disc, and the fastening head has an external thread on its outer side that is threadedly connected to the supporting disc.

[0014] The beneficial effects achieved by this invention are as follows:

[0015] 1. The present invention is provided with two force-applying rods, a main one and a secondary one. The operator can work together to rotate the motor on both sides of the main shaft at the motor shaft extension end. The operation is simple and convenient. The main force-applying rod is provided with a counterweight. The counterweight can use its own weight to reduce the force applied to the main force-applying rod by the operator, thereby reducing the intensity of the operator's movements.

[0016] 2. All functional components of this invention are detachable, and can be replaced in a timely manner if a functional component is damaged, thereby reducing maintenance costs and extending service life.

[0017] 3. The present invention has three force-applying sleeves evenly arranged around the supporting disc, which allows the operator to continuously apply force within the circumference, greatly enhancing its practicality; and the force-applying sleeves and the two main and auxiliary force-applying rods form a force-saving lever while being less prone to slippage, greatly improving safety during operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is an exploded view of the overall structure of the present invention;

[0020] Figure 3 This is a cross-sectional view of the supporting disk of the present invention;

[0021] Figure 4 This is a schematic diagram of the main force-applying rod structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection between the main force-applying rod and the force-applying sleeve rod of the present invention;

[0023] Figure 6 This is a schematic diagram of the connection between the auxiliary force-applying rod and the force-applying sleeve rod of the present invention;

[0024] Figure 7 This is a schematic diagram of the fixed bending rod structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the force-applying sleeve structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the fastening sleeve structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the connection between the fixed bending rod and the fastening sleeve rod of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure used in this invention. Figure 1 ;

[0029] Figure 12 This is a schematic diagram of the structure used in this invention. Figure 2 ;

[0030] Figure 13 This is a detailed diagram of the fastening sleeve rod during the use of this invention.

[0031] Explanation of markings in the diagram: 1. Support disc; 111. Disc groove; 2. Main force-applying rod; 21. Main force-applying handle; 22. Counterweight; 222. Main force-applying rod groove; 3. Secondary force-applying rod; 31. Secondary force-applying handle; 333. Secondary force-applying rod groove; 4. Fixed bending rod; 41. Sleeve; 42. Fixed bending rod fixing head; 43. Fastening head; 444. Fixed bending rod groove; 5. Force-applying sleeve rod; 51. Force-applying sleeve clamp; 52. Force-applying sleeve rod fixing head; 555. Force-applying sleeve rod groove; 6. Fastening sleeve rod; 61. Support sleeve; 62. Fixing sleeve; 666. Fastening sleeve rod groove; 777. Fixing sleeve groove; 7. High-voltage motor spindle; 8. High-voltage motor shaft extension end backrest wheel; 81. Backrest wheel bolt fastening through hole. Detailed Implementation

[0032] To better understand the purpose, structure, and function of this invention, the following detailed description, in conjunction with the accompanying drawings, provides an auxiliary device specifically designed for turning gears of large high-voltage motors.

[0033] like Figures 1 to 10 As shown, an auxiliary device specifically designed for large high-voltage motor turning gears includes a support disc 1, a main force-applying rod 2, a secondary force-applying rod 3, a fixed bending rod 4, a force-applying sleeve rod 5, and a fastening sleeve rod 6. The support disc 1 is a flat cylindrical structure. Six disc grooves 111 are evenly arranged on the circumferential sidewall of the support disc 1. Each disc groove 111 is threaded. The fixed bending rod 4 is threaded into three alternate disc grooves 111, and the force-applying sleeve rod 5 is threaded into the other three disc grooves 111. Each fixed bending rod 4 is threadedly connected to the fastening sleeve rod 6. The main force-applying rod 2 is detachably connected to one of the force-applying sleeve rods 5, and the secondary force-applying rod 3 is detachably connected to the other force-applying sleeve rod 5.

[0034] The main force-applying rod 2 is an overall elongated cylindrical structure. A main force-applying handle 21 is located at the end of the main force-applying rod 2 furthest from the force-applying sleeve 5. The main force-applying handle 21 is also an elongated cylindrical structure. For ease of force application, the main force-applying handle 21 is designed to be relatively long, and its diameter is larger than that of the main force-applying rod 2. Anti-slip textures are provided on the outer side of the main force-applying handle 21. A counterweight 22 is located at the lower end of the main force-applying handle 21. The counterweight 22 is an overall short cylindrical structure, and its diameter is larger than that of the main force-applying handle 21. A main force-applying rod groove 222 is located at the center of the end face connecting the main force-applying rod 2 and the force-applying sleeve 5.

[0035] The auxiliary force-applying rod 3 is an overall long cylindrical structure. The overall length of the auxiliary force-applying rod 3 is less than the length of the main force-applying rod 2. The end of the auxiliary force-applying rod 3 away from the force-applying sleeve rod 5 is provided with a handle. The outer side of the auxiliary force-applying handle 31 is provided with anti-slip texture.

[0036] Three force-applying sleeves 5 are provided, and each force-applying sleeve 5 is a cylindrical sleeve structure, such as... Figure 8 As shown, a force-applying clamp 51 is provided at the center of the inner side of the outer sleeve of the force-applying sleeve 5. The force-applying clamp 51 is a cylindrical structure. A force-applying sleeve groove 555 is provided between the force-applying clamp 51 and the outer sleeve of the force-applying sleeve 5. The length of the force-applying clamp 51 is longer than the length of the outer sleeve of the force-applying sleeve 5, and the force-applying clamp 51 protrudes from the outer sleeve of the force-applying sleeve 5. A force-applying sleeve fixing head 52 is provided at the center of the other end face of the force-applying sleeve 5. The force-applying sleeve fixing head 52 is a cylindrical structure. An external thread is provided on the outer side of the force-applying sleeve fixing head 52, and the force-applying sleeve fixing head 52 can be threadedly connected to the disc groove 111. Figure 5 and Figure 6 As shown, the diameter of the force-applying head 51 matches the diameter of the main force-applying rod groove 222 and the auxiliary force-applying rod groove 333. The outer diameter of the main body of the main force-applying rod 2 and the auxiliary force-applying rod 3 matches the groove of the force-applying sleeve rod 555. Thus, after the main force-applying rod 2 and the auxiliary force-applying rod 3 can be inserted into the force-applying sleeve rod 5, the main force-applying rod groove 222 and the auxiliary force-applying rod groove 333 can cooperate with the force-applying head 51 to apply force. The outer sleeve of the force-applying sleeve rod 5 surrounds the main force-applying rod 2 and the auxiliary force-applying rod 3.

[0037] Three fixed bending rods 4 are provided. The fixed bending rods 4 are generally of an "L-shaped" structure, as shown below. Figure 7 As shown, a retaining sleeve 41 is provided at the right angle of the foremost end of the fixed bending rod 4. The retaining sleeve 41 is a hollow cylindrical structure. A fixing head 42 for the fixed bending rod is provided at the center of the inner part of the retaining sleeve 41. The fixing head 42 is a cylindrical structure with external threads on its outer side. The protruding length of the fixing head 42 is the same as that of the retaining sleeve 41. A fixing groove 444 for the fixed bending rod is provided between the retaining sleeve 41 and the retaining head of the fixed bending rod 4. A fastening head 43 is provided at the center of the other end face of the main body of the fixed bending rod 4. The fastening head 43 is a cylindrical structure with external threads on its outer side. The fastening head 43 can be threadedly connected to the groove 111 of the disc.

[0038] Three fastening sleeves 6 are provided. The fastening sleeves 6 are generally of a "T-shaped" structure, such as... Figure 9As shown, the rear end of the fastening sleeve 6 is a flat cylindrical structure. For ease of operation, two small cylindrical protrusions are symmetrically arranged on both sides of the flat cylindrical structure. A support sleeve 61 is provided in the middle of the fastening sleeve 6. The support sleeve 61 is a hollow cylindrical structure, and its diameter is smaller than the diameter of the flat cylindrical structure at the rear end of the fastening sleeve 6. A fixing sleeve 62 is provided at the front end of the fastening sleeve 6. The fixing sleeve 62 is a hollow cylindrical structure. A fixing sleeve groove 777 is provided at the center of the front end of the fixing sleeve 62. The fixing sleeve groove 777 has internal threads. The fixing sleeve 62 is wrapped inside the support sleeve 61. A fastening sleeve groove 666 is provided between the fixing sleeve 62 and the support sleeve 61. The support sleeve 61, the fixing sleeve 62, and the cylindrical structure at the rear end of the fastening sleeve 6 are concentric. Figure 10 As shown, the fixing sleeve 62 can be threadedly connected to the fixing head 42 of the fixing bent rod, and after the two are threadedly connected, the fixing sleeve 62 is wrapped inside the groove 444 of the fixing bent rod.

[0039] The invention is illustrated using a 2100KW high-pressure hydrogen production compressor under no-load turning gear as an example. Figure 11 , Figure 12 As shown, after replacing the bearing or performing maintenance on the hydrogen-producing compressor, a no-load test run is required to verify the reliability of the repair. This test run can only be done under no-load conditions; therefore, the compressor shaft extension is already disconnected from the load side. The operator rotates and removes the three fastening sleeves 6, then places the support disc 1 against the outer center of the backrest wheel 8 at the high-pressure motor shaft extension end, aligning the clamping sleeve 41 with the backrest wheel bolt fastening through hole 81. At this point, the three fastening sleeves 6 are threaded through the backrest wheel bolt fastening through hole 81 on the other side of the high-pressure motor shaft extension end backrest wheel 8 and connected to the three fixed bent rods 4, securing them firmly. After completion, the main force-applying rod 2 is inserted into the force-applying sleeve 5, and the main force-applying handle 21 is gripped to apply downward force. If the rotation is too heavy, the auxiliary force-applying rod 3 can be inserted into the adjacent force-applying sleeve 5, and the auxiliary force-applying handle 31 is gripped to apply upward force; the two actions work together. It should be noted that large high-voltage motors are generally supported by bearing bushes on their main shafts. Even when using a dedicated turning motor to turn the motor before normal startup, the turning speed is very slow. Therefore, the speed is also very slow when manually turning the motor under no-load. After rotating a certain angle, the main force-applying rod 2 and the auxiliary force-applying rod 3 are pulled out from the force-applying sleeve rod 5. The three force-applying sleeve rods 5 are then used alternately to apply force according to the rotation speed. Figure 13 As shown, in order to maintain the stability of the installation of the present invention, the outer diameter of the support sleeve 61 should fit with the diameter of the fastening through hole 81 of the backrest wheel bolt, and the support sleeve 61 will play a supporting role after fastening.

[0040] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. An auxiliary device specifically designed for turning gears of large high-voltage motors, characterized in that: The system includes a support disc (1), a main force-applying rod (2), and a secondary force-applying rod (3). The support disc (1) has three detachably mounted force-applying sleeves (5) circumferentially arranged. The main force-applying rod (2) is detachably mounted on one of the force-applying sleeves (5), and the secondary force-applying rod (3) is detachably mounted on the other. Three detachably mounted fixed bending rods (4) are detachably arranged around the support disc (1). Each fixed bending rod (4) is positioned between two adjacent force-applying sleeves (5). Each fixed bending rod (4) is detachably mounted with a fastening sleeve (6). A retainer (41) is positioned at the right angle at the front end of each fixed bending rod (4), and the fixed bending rod is positioned inside the retainer (41). A fixing head (42) is provided with a fixing rod groove (444) between the sleeve (41) and the fixing rod fixing head (42), and the fixing rod fixing head (42) is provided with a thread on the outside; a support sleeve (61) is provided in the middle of the fastening sleeve (6), a fixing sleeve (62) is provided inside the support sleeve (61), a fixing sleeve groove (777) with a thread is provided inside the fixing sleeve (62), the fixing sleeve (62) is threadedly connected to the fixing rod fixing head (42), a force-applying sleeve fixing head (52) is provided at the connection between the force-applying sleeve (5) and the support disc (1), and the force-applying sleeve fixing head (52) is provided with an external thread on the outside and is threadedly connected to the support disc (1).

2. The auxiliary device for large high-voltage motor turning gears according to claim 1, characterized in that: A force-applying clip (51) is provided at the center of one end of the force-applying sleeve (5) away from the support disc (1), and a force-applying sleeve groove (555) is provided between the force-applying clip (51) and the force-applying sleeve (5); a main force-applying rod groove (222) is provided at the connecting end of the main force-applying rod (2) and the force-applying sleeve (5), and a secondary force-applying rod groove (333) is provided at the connecting end of the secondary force-applying rod (3) and the force-applying sleeve (5), and both the main force-applying rod (2) and the secondary force-applying rod (3) can be inserted into the force-applying sleeve groove (555).

3. The auxiliary device for large high-voltage motor turning gears according to claim 1, characterized in that: A fastening sleeve groove (666) is provided between the support sleeve (61) and the fixing sleeve (62).

4. An auxiliary device specifically designed for large high-voltage motor turning gears according to claim 1, characterized in that: The fastening sleeve (6) has a T-shaped structure.

5. An auxiliary device specifically designed for large high-voltage motor turning gears according to claim 1, characterized in that: The main force-applying rod (2) is provided with a main force-applying handle (21) at its end, and the auxiliary force-applying rod (3) is provided with an auxiliary force-applying handle (31) at its end.

6. An auxiliary device specifically designed for large high-voltage motor turning gears according to claim 5, characterized in that: A counterweight (22) is provided on the main force-applying rod (2), and the counterweight (22) is located at the front end of the main force-applying grip (21).

7. An auxiliary device specifically designed for large high-voltage motor turning gears according to claim 5, characterized in that: Both the main force-applying grip (21) and the secondary force-applying grip (31) are provided with anti-slip textures.

8. An auxiliary device specifically designed for large high-voltage motor turning gears according to claim 1, characterized in that: A fastening head (43) is provided at the connection between the fixed bending rod (4) and the supporting disc (1), and the fastening head (43) has an external thread on the outside that is threaded to the supporting disc (1).

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