A device for dismounting and mounting a high-power motor rotor of a mine transport vehicle

Abstract

The utility model relates to a device for disassembling and assembling high-power motor rotor of mine transport vehicle, belonging to the technical field of generator maintenance equipment, which is used for disassembling and assembling high-power motor rotor of mine transport vehicle. The technical scheme is as follows: the hanger is a plate frame structure of inverted L type, the sliding block is a rectangular plate frame sleeve, the sleeve inner hole of the sliding block is in sliding fit with the crossbeam of the hanger, the top surface of the sleeve of the sliding block is provided with a lifting lug, the lifting seat is composed of two side plates and a bottom plate, the upper end of the two side plates is welded and connected with the lower end of the vertical beam of the hanger, the two side plates of the lifting seat are provided with opposite square holes, the adapting seat is a rectangular plate frame structure, the rectangular body of the adapting seat is inserted into the square holes of the two side plates of the lifting seat, and one end face of the rectangular body of the adapting seat is connected with the front end face of the motor rotor central shaft. The utility model has the advantages of simple structure, convenient use, horizontal degree adjustment of the motor rotor, safety in the process of rotor disassembly and assembly, quick lifting process, maintenance time saving, and improved maintenance work efficiency.

Description

Technical Field

[0001] This utility model relates to a device for disassembling and assembling the rotor of a high-power motor in an open-pit mine transport vehicle, belonging to the technical field of generator maintenance equipment. Background Technology

[0002] During maintenance of 1800KW generators and 560KW wheel-side drive motors used in open-pit mine transport vehicles, the motor rotors need to be removed from the stators to complete subsequent maintenance. Typically, when disassembling the rotor, maintenance personnel fix a sleeve to the front end of the rotor's central shaft with bolts, use a crane to lift the adapter to level the rotor, then insert a 5m long pressure bar into the sleeve, and manually press down on the pressure bar to level the rotor's weight, thus pulling the rotor out of the stator. The same method is used to install the rotor back into the stator. Since the rotor weighs approximately 2 tons, leveling it manually requires 5-6 people, which is labor-intensive and prone to instability, causing the rotor to not remain level. This can result in the rotor hitting the stator, causing damage to both the rotor and stator; and it can also cause the self-aligning roller bearings to become stuck in their bearing housings, wasting disassembly and assembly time. In short, currently, disassembling and assembling high-power motor rotors is time-consuming, labor-intensive, and highly dangerous. Therefore, it is essential to design a suitable disassembly and assembly device for high-power motor rotors. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle. This device can balance the weight of the generator rotor and keep the rotor horizontal and stable after being lifted, thus completely solving the problems of the rotor hitting the stator and the rotor sub-bearing getting stuck in the bearing seat when disassembling and assembling the motor rotor.

[0004] The technical solution to the above technical problem is:

[0005] A device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle includes a hanger, a slider, a lifting base, and an adapter base. The hanger is an inverted L-shaped plate-frame structure composed of a crossbeam and a vertical beam. The slider is a rectangular plate-frame sleeve, with the inner hole of the slider sleeve slidingly fitted onto the crossbeam of the hanger.

[0006] The top surface of the slider sleeve is equipped with lifting lugs. The lifting base consists of two side plates and a base plate. The surfaces of the two side plates are parallel and opposite to each other. The base plate is connected between the lower edges of the two side plates. The upper ends of the two side plates are welded to the lower end of the vertical beam of the hanger. The two side plates of the lifting base have opposite insertion holes, which are square holes. The adapter is a cuboid plate frame structure. The cross-section of the cuboid of the adapter matches the square holes on the side plates of the lifting base. The cuboid of the adapter is inserted into the square holes of the two side plates of the lifting base. One end face of the cuboid of the adapter is connected to the front end face of the central shaft of the motor rotor.

[0007] The aforementioned device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle has a crossbeam marked with the balance position of the hanger and the balance position of the load. The front end of the crossbeam of the hanger has a pin hole, and a stop pin is installed in the pin hole. The length of the stop pin is greater than the thickness of the slider.

[0008] In the aforementioned device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle, the bottom length of the rectangular sleeve of the slider is greater than the top length of the rectangular sleeve, and clamping plates are extended on both sides of the bottom length direction of the rectangular sleeve.

[0009] In the aforementioned device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle, the clearance between the square holes on the two side plates of the lifting base and the outer wall of the rectangular outer wall of the adapter base is less than 0.5 mm.

[0010] The aforementioned device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle has 1-3 connecting holes on one end face of the adapter seat. The positions of the connecting holes correspond to the threaded holes at the front end of the motor rotor's central shaft. The connecting bolts fix the adapter seat to the front end of the motor rotor's central shaft through the connecting holes and the threaded holes.

[0011] The beneficial effects of this utility model are:

[0012] The lifting bracket of this utility model has lifting lugs on the upper part of the crossbeam, which can be connected to the crane hook by steel wire rope to lift and move the central shaft of the motor rotor; the slider can move along the crossbeam of the lifting bracket to maintain the balanced position of the motor rotor; the lower end of the vertical beam of the lifting bracket is connected to the lifting base, and the square hole on the side plate of the lifting base can be inserted into the adapter seat to lift the adapter seat; one end of the adapter seat is connected to the end face of the central shaft of the motor rotor to lift the motor rotor.

[0013] This utility model has a simple structure and is easy to use. Through the cooperation between the slider, the hanger and the adapter, the level of the rotor can be adjusted. The rotor is firmly fixed, ensuring safety during the rotor disassembly and assembly process. The hoisting process is convenient and quick, saving maintenance time, improving maintenance efficiency and reducing the labor intensity of maintenance personnel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] The following are the markings in the diagram: 1. Hanger; 2. Slider; 3. Lifting seat; 4. Adapter seat; 5. Stop pin; 6. Horizontal beam; 7. Vertical beam; 8. Lifting lug; 9. Side plate; 10. Base plate; 11. Square hole; 12. Clamping plate. Detailed Implementation

[0016] This utility model consists of a hanger 1, a slider 2, a lifting base 3, an adapter base 4, and a stop pin 5.

[0017] As shown in the diagram, the hanger 1 is an inverted L-shaped plate frame structure composed of a horizontal beam 6 and a vertical beam 7. The horizontal beam 6 and the vertical beam 7 are chamfered to prevent stress concentration after loading. The horizontal beam 6 is marked with the hanger's balance position and the load's balance position, which are used to indicate the lifting position when unloaded. The front end of the horizontal beam 6 of the hanger 1 has a pin hole, and a stop pin 5 is installed in the pin hole. The length of the stop pin 5 is greater than the thickness of the slider 2. The stop pin 5 is used to prevent the slider 2 from sliding out of the horizontal beam 6 after installation.

[0018] As shown in the diagram, slider 2 is a rectangular plate-frame sleeve. The inner hole of slider 2 fits onto the crossbeam 6 of hanger 1, and the inner hole of slider 2 and the crossbeam 6 of hanger 1 are in sliding fit. Sliding slider 2 can slide along the crossbeam 6 of hanger 1. By adjusting the position of slider 2, rotors of different masses can be lifted. Lifting lugs 8 are installed on the top surface of the sleeve of slider 2. Lifting lugs 8 are connected to the crane hook via wire ropes for lifting and moving the central shaft of the motor rotor. To prevent slider 2 from sliding due to force during use, the bottom length of the rectangular sleeve of slider 2 is greater than the top length of the rectangular sleeve of slider 2. Clamping plates extend on both sides of the bottom length of the rectangular sleeve.

[0019] The slider 2 serves as the lifting point of the entire device, balancing the lifting of objects of different masses by changing its position on the crossbeam 6 of the hanger 1. To facilitate the movement of the slider 2 on the crossbeam 6 of the hanger 1, the height and width of the inner hole of the slider 2's sleeve are 0.5mm greater than the height and width dimensions of the hanger 1. Due to the gap, to prevent the slider 2 from slipping on the crossbeam 6 of the hanger 1 when lifting heavy objects, the length of the bottom plate of the slider 2 is 1.5 times greater than the upper plate, so that the slider 2 can self-lock when the crossbeam 6 tilts slightly upwards when lifting heavy objects.

[0020] As shown in the figure, the lifting base 3 consists of two side plates 9 and a base plate 10. The surfaces of the two side plates 9 are parallel and opposite to each other. The base plate 10 is connected between the lower edges of the two side plates 9. The upper ends of the two side plates 9 are welded to the lower end of the vertical beam 7 of the hanger 1. The side plates 9 of the lifting base 3 are pentagonal, and the lower part is 1.25 times wider than the upper part, thereby improving the load-bearing capacity of the lifting base 3. The overall load-bearing capacity of the hanger is approximately 0.25-2.2t.

[0021] The two side plates 9 of the lifting base 3 have opposing insertion holes, which are square holes 11. The square holes 11 on the side plates 9 of the lifting base 3 can be used to insert the adapter 4 for lifting the adapter 4. The square hole 11 on the left side plate 9 is 1 cm higher than the square hole 11 on the right side plate. After the adapter 4 is installed, the lower end of the square hole 11 on the left side is subjected to force, and the upper end of the square hole 11 on the right side is subjected to force. This lever principle is used to maintain the balance of the suspended object, and the adapter 4 is not easy to fall off when the rotor tilts slightly.

[0022] As shown in the figure, the adapter 4 is a cuboid plate frame structure. The cross section of the cuboid of the adapter 4 in the length direction matches the square hole 11 on the side plate 9 of the hoisting seat 3. The cuboid of the adapter 4 is inserted into the square hole 11 of the two side plates 9 of the hoisting seat 3. The fitting clearance between the square hole 11 of the two side plates 9 of the hoisting seat 3 and the outer wall of the cuboid of the adapter 4 is less than 0.5mm.

[0023] As shown in the figure, one end face of the cuboid of the adapter 4 is connected to the front end face of the motor rotor central shaft. One end face of the adapter 4 has 1-3 connecting holes, the positions of which correspond to the threaded holes at the front end of the motor rotor central shaft. The connecting bolts fix the adapter 4 to the front end of the motor rotor central shaft through the connecting holes and the threaded holes.

[0024] The usage process of this utility model is as follows:

[0025] When unloaded, use a shackle to connect one end of the wire rope to the lifting lug 8 of the slider 2, and hang the other end of the wire rope on the crane hook. Move the slider 2 to the unloaded balance position of the crossbeam 6 of the gantry 1, and lift the gantry 1 through the lifting lug 8. At this time, the crossbeam 6 of the gantry 1 is in a horizontal state.

[0026] Use connecting bolts to fix the adapter 4 to the front end of the motor rotor central shaft through the connecting holes and threaded holes;

[0027] The lifting crane hook lifts the lifting frame 1. The movement of the crane drives the lifting frame 1 to move. The square hole 11 of the lifting seat 3 at the lower end of the lifting frame 1 is inserted into the adapter seat 4 fixed on the central shaft of the main motor rotor. The square hole 11 and the adapter seat 4 are fitted with a clearance.

[0028] After installation, lower the hook, loosen the wire rope, move the slider 2 to the balance position of the suspended object, raise the hook to lift the lifting frame 1, lift the main motor rotor center shaft to the horizontal position, and move the trolley to move the lifting frame 1 to pull out or send the rotor into the stator installation position.

[0029] An embodiment of this utility model is as follows:

[0030] The crossbeam 6 of hanger 1 is 1560mm long, 160mm wide, and 20mm thick. The vertical beam 7 is 1300mm long and 20mm thick, narrower at the top and wider at the bottom; the upper part is 790mm long and 160mm wide, while the lower part is 90mm long and 200mm wide. The stop pin 5 has a diameter of 30mm and a length of 120mm.

[0031] The slider 2 has a height of 365mm, a width of 100mm, and a thickness of 62mm. The inner hole has a length of 100mm, a width of 22mm, and a height of 162mm.

[0032] The side plate 9 of the lifting base 3 is 450mm long, 300mm wide, and 20mm thick. The base plate 10 is 300mm long, 105mm wide, and 20mm thick. The square hole 11 is 200mm long and 200mm wide.

[0033] The adapter 4 is 450mm long, 199.5mm wide, and 199.5mm thick.

Claims

1. A device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle, characterized in that: It includes a hanger (1), a slider (2), a lifting seat (3), and an adapter seat (4). The hanger (1) is an inverted L-shaped plate frame structure composed of a crossbeam (6) and a vertical beam (7). The slider (2) is a rectangular plate frame sleeve. The inner hole of the sleeve of the slider (2) is fitted onto the crossbeam (6) of the hanger (1). The inner hole of the sleeve of the slider (2) and the crossbeam (6) of the hanger (1) are in sliding fit. The top surface of the sleeve of the slider (2) is equipped with a lifting lug (8). The lifting seat (3) is composed of two side plates (9) and a bottom plate (10). The surfaces of the two side plates (9) are parallel and opposite to each other. The bottom plate (10) is connected to the two side plates. Between the lower edges of (9), the upper ends of the two side plates (9) are welded to the lower end of the vertical beam (7) of the hanger (1). The two side plates (9) of the hoisting seat (3) have corresponding insertion holes, which are square holes (11). The adapter (4) is a cuboid plate frame structure. The cross section of the cuboid of the adapter (4) in the length direction matches the square hole (11) on the side plate (9) of the hoisting seat (3). The cuboid of the adapter (4) is inserted into the square hole (11) of the two side plates (9) of the hoisting seat (3). One end face of the cuboid in the length direction of the adapter (4) is connected to the front end face of the central shaft of the motor rotor.

2. The device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle according to claim 1, characterized in that: The crossbeam (6) of the hanger (1) is marked with the balance position of the hanger and the balance position of the suspended object. The front end of the crossbeam (6) of the hanger (1) has a pin hole, and the stop pin (5) is installed in the pin hole. The length of the stop pin (5) is greater than the thickness of the slider (2).

3. The device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle according to claim 1, characterized in that: The bottom length of the rectangular sleeve of the slider (2) is greater than the top length of the rectangular sleeve of the slider (2), and there are retaining plates (12) extending on both sides of the bottom length direction of the rectangular sleeve.

4. The device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle according to claim 1, characterized in that: The clearance between the square holes (11) of the two side plates (9) of the lifting base (3) and the rectangular outer wall of the adapter (4) is less than 1 mm.

5. The device for disassembling and assembling the rotor of a high-power motor in a mining transport vehicle according to claim 1, characterized in that: The adapter (4) has 1-3 connecting holes on one end face. The position of the connecting holes corresponds to the threaded hole at the front end of the motor rotor central shaft. The connecting bolts fix the adapter (4) to the front end of the motor rotor central shaft through the connecting holes and the threaded holes.

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