A guide vane shaft sleeve dismounting device for a hydroelectric power station generator set

Abstract

The utility model discloses a hydroelectric power station generator set guide vane shaft sleeve dismounting device, include: U -shaped support, both sides bottom all integrative setting have the outer along the edge, lift vertical guide drive mechanism, install on U -shaped support, four -way synchronous increase extension contraction mechanism, fixedly connected in lift vertical guide drive mechanism inboard, and its bottom is annular equidistance fixed connection with four L -shaped hook claws, and opposite two L -shaped hook claws are symmetrically set up, lift vertical guide drive mechanism includes first multistage electric telescopic link, lift plate and two vertical guide bars, and first multistage electric telescopic link fixed mounting is in U -shaped support top. The utility model discloses through setting up a series of structures, and it is convenient for auxiliary personnel to remove the guide vane shaft sleeve automatically and conveniently and quickly, and it is not necessary to work hard to pull and impact and knock and work, and it saves time and energy, and the operation is simple, improves the convenience and the easiness of dismounting, and it is convenient to release the hooking work to the guide vane shaft sleeve after dismounting.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station generator set maintenance technology, specifically a hydropower station generator set guide vane bushing disassembly device. Background Technology

[0002] The upper and middle bushings of the movable guide vanes of the hydropower station generator set are installed inside the sleeve. The bushings cooperate with the journal of the movable guide vane to enable the guide vane to rotate flexibly. During the rotation, they play a lubricating and sealing role. After many years of operation, the frequent movement of the guide vane causes severe wear of the bushings. In addition, the nylon bushings will expand after being immersed in water for a long time, which will change the fit clearance between the bushing and the journal of the movable guide vane, affecting the safe and stable operation of the unit. Therefore, it is necessary to disassemble the bushings of the guide vanes to improve the safety and reliability of the equipment.

[0003] Since the bushing and the sleeve are interference fits, and the outer sleeve is also interference fit, the existing guide vane bushings are usually disassembled by manual pulling, impacting and hammering. This method requires the operator to have great strength, and there is a lack of a device for automatic and convenient disassembly of the bushing by special personnel. It is time-consuming and labor-intensive, and the disassembly work is difficult and lacks convenience and ease. In view of this, this application proposes a disassembly device for the guide vane bushing of a hydropower station generator set to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a device for disassembling the guide vane bushing of a hydropower station generator set, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for disassembling the guide vane bushing of a hydropower station generator set, comprising:

[0006] The U-shaped bracket has an integral outer edge on both bottom sides;

[0007] The lifting vertical guide drive mechanism is mounted on a U-shaped bracket;

[0008] The four-way synchronous expansion and contraction mechanism is fixedly connected to the inner side of the lifting vertical guide drive mechanism. At its bottom, four L-shaped hooks are fixedly connected in a ring at equal intervals, with two opposite L-shaped hooks arranged symmetrically. The lifting vertical guide drive mechanism is used to drive the four-way synchronous expansion and contraction mechanism to move up and down, thereby driving the four L-shaped hooks to move up and down. The four-way synchronous expansion and contraction mechanism is used to drive the four L-shaped hooks to expand synchronously and repel each other or contract and return synchronously. After the four L-shaped hooks move down into the guide vane bushing, they hook onto the inner side using the synchronous repulsive expansion movement of the four L-shaped hooks, and then pull them upwards to remove them.

[0009] Preferably, the lifting vertical guide drive mechanism includes a first multi-stage electric telescopic rod, a lifting plate, and two vertical guide rods. The first multi-stage electric telescopic rod is fixedly installed on the top of the U-shaped bracket, the lifting plate is fixedly installed on the extended end of the first multi-stage electric telescopic rod, and the two vertical guide rods are fixedly connected to the bottom of the lifting plate. The U-shaped bracket is slidably sleeved on the two vertical guide rods.

[0010] Preferably, the four-way synchronous expansion and contraction mechanism includes two discs and four connecting rods. The four connecting rods are fixedly connected in a ring at equal intervals between the two discs. The upper disc is fixedly connected between two vertical guide rods. The top of each of the two discs has four rectangular perforations in a ring at equal intervals. Horizontal guide rods are fixedly connected between the inner walls of the rectangular perforations on both sides and between the inner walls of the rectangular perforations on the front and rear sides. The same moving rod is slidably sleeved on the two horizontal guide rods on the same side. Two springs are fixedly connected to the repulsive side of each of the four moving rods. The springs are movably sleeved on the corresponding horizontal guide rods and fixedly connected to the side wall of the rectangular perforation. The bottom ends of the four moving rods are fixedly connected to the top ends of the corresponding L-shaped hooks. The same four-way expansion and contraction drive assembly is installed between the four moving rods. The four-way expansion and contraction drive assembly is used to drive the four moving rods to expand in opposite directions or contract back in close proximity.

[0011] Preferably, the four-way expansion and contraction drive assembly includes a rectangular rod, a second multi-stage electric telescopic rod, and four connecting rods. The rectangular rod is located between the four movable rods, and the lower disc is slidably sleeved on the rectangular rod. The four sides of the rectangular rod are rotatably connected to the bottom ends of the corresponding connecting rods, and the sides of the four movable rods that are close to each other are rotatably connected to the top ends of the corresponding connecting rods. The two opposite connecting rods are arranged obliquely and symmetrically. The second multi-stage electric telescopic rod is embedded and fixed in the middle of the bottom of the upper disc, and the extended end of the second multi-stage electric telescopic rod is fixedly connected to the top end of the rectangular rod.

[0012] Preferably, a U-shaped seat is fixedly connected to each of the four sides of the rectangular rod, and a groove is opened on the side of each of the four moving rods that are close to each other. A support shaft is fixedly connected between the inner walls of the two sides of the groove and between the inner walls of the two sides of the U-shaped seat. A circular through hole is opened on the top and bottom of one side of the connecting rod, and a bearing is fixedly sleeved in the circular through hole. The inner ring of the bearing is fixedly sleeved with the outer side of the corresponding support shaft.

[0013] Preferably, a lithium battery is fixedly installed on the inner left side of the U-shaped bracket, and both the first multi-stage electric telescopic rod and the second multi-stage electric telescopic rod are electrically connected to the lithium battery.

[0014] Preferably, the top of the U-shaped bracket is provided with a clearance hole, which is located above and adapted to the second multi-stage electric telescopic rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Through the cooperation of the U-shaped bracket, L-shaped hooks, lifting vertical guide drive mechanism, four-way synchronous expansion and contraction mechanism and four-way expansion and contraction drive assembly, four L-shaped hooks can be driven to move down into the guide vane bushing. After moving in, the four L-shaped hooks can be driven by electric drive to expand and hook onto the lower part of the guide vane bushing. After hooking, the four L-shaped hooks can be driven to move up to pull out the guide vane bushing.

[0017] The system utilizes electric drive to sequentially achieve downward penetration, four-way hooking, and upward pulling, enabling personnel to easily and quickly disassemble and remove the guide vane bushing. This eliminates the need for manual labor involving pulling, impacting, and hammering, saving time and effort, simplifying disassembly operations, and improving the convenience and ease of disassembly.

[0018] In addition, after removal, it can drive the four L-shaped claws to retract in close proximity to release the hook state, which facilitates the easy release of the hook on the guide vane bushing after disassembly.

[0019] This utility model features a series of structures that facilitate easy and quick automatic disassembly and removal of the guide vane bushing by assisting personnel, eliminating the need for manual labor involving pulling, impacting, or hammering. This saves time and effort, simplifies the disassembly operation, improves the ease and convenience of disassembly, and allows for easy release of the hooks on the guide vane bushing after disassembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a hydropower station generator set guide vane bushing disassembly device with four L-shaped hooks extending into the inner side of the guide vane bushing, as proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of a guide vane bushing disassembly device for a hydropower station generator set proposed in this utility model;

[0022] Figure 3 A cross-sectional view of the four L-shaped hooks extending into the inner side of the guide vane bushing of a hydropower station generator set according to this utility model.

[0023] Figure 4 For the present utility model Figure 3 A magnified structural diagram of part A in the diagram.

[0024] In the diagram: 1. U-shaped bracket; 101. First multi-stage electric telescopic rod; 102. Lifting plate; 103. Vertical guide rod; 2. Disc; 201. Connecting rod; 202. Rectangular perforation; 203. Horizontal guide rod; 204. Moving rod; 205. Spring; 3. Second multi-stage electric telescopic rod; 301. Connecting rod; 302. Rectangular rod; 303. U-shaped seat; 304. Support shaft; 4. L-shaped hook. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 4 As shown in this embodiment, a hydropower station generator set guide vane bushing disassembly device includes:

[0027] The U-shaped bracket 1 has an outer edge integrally provided on both bottom sides;

[0028] The lifting vertical guide drive mechanism is mounted on the U-shaped bracket 1;

[0029] The four-way synchronous expansion and contraction mechanism is fixedly connected to the inner side of the lifting vertical guide drive mechanism. At its bottom, four L-shaped hooks 4 are fixedly connected in a ring at equal intervals, with two opposite L-shaped hooks 4 arranged symmetrically. The lifting vertical guide drive mechanism is used to drive the four-way synchronous expansion and contraction mechanism to move up and down, so as to drive the four L-shaped hooks 4 to move up and down. The four-way synchronous expansion and contraction mechanism is used to drive the four L-shaped hooks 4 to expand synchronously or contract and return synchronously. After the four L-shaped hooks 4 move down into the guide vane bushing, they hook onto the inner side by expanding synchronously and repelling each other. Then, they pull upwards to remove the hooks by moving upwards.

[0030] Furthermore, such as Figure 1 , 2 As shown in Figure 3, the lifting vertical guide drive mechanism includes a first multi-stage electric telescopic rod 101, a lifting plate 102, and two vertical guide rods 103. The first multi-stage electric telescopic rod 101 is fixedly installed on the top of the U-shaped bracket 1, the lifting plate 102 is fixedly installed on the extended end of the first multi-stage electric telescopic rod 101, and the two vertical guide rods 103 are fixedly connected to the bottom of the lifting plate 102. The U-shaped bracket 1 is slidably sleeved on the two vertical guide rods 103.

[0031] In this embodiment, the top of the U-shaped bracket 1 has two vertical guide holes that are respectively slidably fitted onto the outer side of the corresponding vertical guide rod 103, which serve to guide the vertical sliding of the vertical guide rod 103.

[0032] In this embodiment, the first multi-stage electric telescopic rod 101, the lifting plate 102 and the two vertical guide rods 103 cooperate to drive the lifting plate 102 to rise and fall, the lifting plate 102 drives the two vertical guide rods 103 to slide vertically on the U-shaped bracket 1, and the two vertical guide rods 103 drive the four-way synchronous expansion and contraction mechanism to move up and down.

[0033] Furthermore, such as Figure 1 , 2 As shown in Figures 3 and 4, the four-way synchronous expansion and contraction mechanism includes two disks 2 and four connecting rods 201. The four connecting rods 201 are fixedly connected in a ring at equal intervals between the two disks 2. The upper disk 2 is fixedly connected between two vertical guide rods 103. The top of each of the two disks 2 has four rectangular perforations 202 in a ring at equal intervals. Horizontal guide rods 203 are fixedly connected between the inner walls of the rectangular perforations 202 on both sides and between the inner walls of the rectangular perforations 202 on the front and rear sides. The two on the same side... A single movable rod 204 is slidably sleeved on the horizontal guide rod 203. Two springs 205 are fixedly connected to the repulsive sides of the four movable rods 204. The springs 205 are movably sleeved on the corresponding horizontal guide rods 203 and fixedly connected to the side wall of the rectangular through hole 202. The bottom ends of the four movable rods 204 are fixedly connected to the top ends of the corresponding L-shaped hooks 4. A single four-way expansion and contraction drive assembly is installed between the four movable rods 204. The four-way expansion and contraction drive assembly is used to drive the four movable rods 204 to expand and contract or contract and return in opposite directions.

[0034] In this embodiment, two horizontal guide holes are provided on one side of the moving rod 204, which are respectively slidably fitted to the outer side of the corresponding horizontal guide rod 203, so as to guide the moving rod 204 to slide laterally.

[0035] In this implementation scheme, a four-way expansion and contraction drive assembly, two discs 2, four connecting rods 201, eight rectangular through holes 202, eight horizontal guide rods 203, four moving rods 204, and eight springs 205 work together. The four-way expansion and contraction drive assembly drives the four moving rods 204 to expand and contract in opposite directions or retract and return in near-retraction. When the four moving rods 204 expand and contract in opposite directions, they slide laterally on the corresponding two horizontal guide rods 203 and compress the two springs 205. The compressed springs 205 assist the four moving rods 204 in retracting and returning in a stable and rapid manner. The four moving rods 204 drive four L-shaped claws 4 to expand and contract in opposite directions simultaneously or retract and return in near-retraction. After the four L-shaped claws 4 move down into the guide vane bushing, they hook onto the inside of the bushing by expanding and contracting in opposite directions. Then, the four L-shaped claws 4 move up to pull the bushing out, thus achieving the effect of automatically disassembling the guide vane bushing with convenient and quick assistance from personnel.

[0036] Furthermore, such as Figure 1 , 3As shown in Figure 4, the four-way expansion and contraction joint drive assembly includes a rectangular rod 302, a second multi-stage electric telescopic rod 3, and four connecting rods 301. The rectangular rod 302 is located between the four moving rods 204. The lower disc 2 is slidably sleeved on the rectangular rod 302. The four sides of the rectangular rod 302 are rotatably connected to the bottom end of the corresponding connecting rod 301. The sides of the four moving rods 204 that are close to each other are rotatably connected to the top end of the corresponding connecting rod 301. The two opposite connecting rods 301 are arranged obliquely and symmetrically. The second multi-stage electric telescopic rod 3 is embedded and fixed in the middle of the bottom of the upper disc 2. The extended end of the second multi-stage electric telescopic rod 3 is fixedly connected to the top end of the rectangular rod 302.

[0037] In this embodiment, U-shaped seats 303 are fixedly connected to all four sides of the rectangular rod 302. Grooves are provided on the adjacent sides of the four movable rods 204. Support shafts 304 are fixedly connected between the inner walls of the two sides of the grooves and between the inner walls of the two sides of the U-shaped seats 303. Circular through holes are provided on the top and bottom sides of one side of the connecting rod 301. Bearings are fixedly fitted inside the circular through holes. The inner ring of the bearing is fixedly fitted to the outer side of the corresponding support shaft 304, which serves to rotate the connecting rod 301. A clearance hole is provided at the top of the U-shaped bracket 1. The clearance hole is located above and matches the second multi-stage electric telescopic rod 3, which serves to avoid collisions when the second multi-stage electric telescopic rod 3 moves upward. A rectangular guide hole is provided at the center of the bottom of the lower disc 2, which slides and fits with the outer side of the rectangular rod 302, serving to guide the vertical sliding of the rectangular rod 302.

[0038] In this embodiment, the rectangular rod 302, the second multi-stage electric telescopic rod 3, and the four connecting rods 301 work together. The second multi-stage electric telescopic rod 3 drives the rectangular rod 302 to move upward or downward. The rectangular rod 302 drives the four connecting rods 301 to rotate upward or downward synchronously. When the four connecting rods 301 rotate upward, they squeeze the four moving rods 204 outward. Under the squeezing force, the four moving rods 204 are driven to move synchronously and repulsively. Subsequently, when the four connecting rods 301 rotate downward, they pull and drive the four moving rods 204 to retract and move back in close proximity.

[0039] Furthermore, a lithium battery is fixedly installed on the inner left side of the U-shaped bracket 1, and both the first multi-stage electric telescopic rod 101 and the second multi-stage electric telescopic rod 3 are electrically connected to the lithium battery.

[0040] It should be noted that the lithium battery preferably uses the Lunqu Technology P760S model lithium battery with integrated charge and discharge protection function. This model of lithium battery can safely supply power to the first multi-stage electric telescopic rod 101 and the second multi-stage electric telescopic rod 3. The first multi-stage electric telescopic rod 101 and the second multi-stage electric telescopic rod 3 are both fixedly equipped with on / off switches. The on / off switches are connected to the corresponding components and lithium batteries through wires. This method of establishing power supply, control and electrical connection controlled by the switch through direct wire connection is a mature and well-known technology of conventional wire control of switch components, and will not be described in detail here.

[0041] The usage method of this embodiment is as follows: When using the guide vane bushing disassembly device for the hydropower station generator set, place the U-shaped bracket 1 on the outside of the guide vane bushing to be disassembled, and reverse the first multi-stage electric telescopic rod 101 to drive the lifting plate 102 to move downward. The lifting plate 102 drives the two discs 2 to move downward through the two vertical guide rods 103. The two discs 2 drive the four L-shaped hooks 4 to move downward into the guide vane bushing through the eight horizontal guide rods 203 and the four moving rods 204. At this time, reverse the second multi-stage electric telescopic rod 3 to drive the rectangular rod 302 to move upward. The rectangular rod 302 drives the four connecting rods 301 to rotate upward synchronously. When the four connecting rods 301 rotate upward, they squeeze the four moving rods 204 outward. Under the squeezing force, the four moving rods 204 are driven to move synchronously and repulsively. During the expansion movement, the two guide rods 203 slide laterally and compress the two springs 205. The four moving rods 204 drive the four L-shaped hooks 4 to expand synchronously and repel each other, so that the lower part of the four L-shaped hooks 4 hooks onto the lower part of the guide vane sleeve from the inside. At this time, the first multi-stage electric telescopic rod 101 is activated in the forward direction to drive the lifting plate 102 to move upward. The lifting plate 102 drives the two discs 2 to move upward through the two vertical guide rods 103. The two discs 2 drive the four L-shaped hooks 4 to move upward through the eight guide rods 203 and the four moving rods 204 in sequence. The four L-shaped hooks 4 pull the hooked guide vane sleeve upward to gradually move it out. This achieves the effect of automatically disassembling and removing the guide vane sleeve for the assistant personnel in a convenient and quick manner. There is no need for manual labor to pull, impact, or knock. It saves time and effort, and the disassembly operation is simple, improving the convenience and ease of disassembly.

[0042] After removal, the second multi-stage electric telescopic rod 3 is activated in the forward direction, causing it to drive the rectangular rod 302 to move downwards. The rectangular rod 302 drives the four connecting rods 301 to rotate downwards synchronously. When the four connecting rods 301 rotate downwards, they pull and drive the four moving rods 204 to retract and move back in close proximity. The compressed spring 205 assists the four moving rods 204 to move back stably and quickly when they retract. The retraction of the four moving rods 204 drives the four L-shaped hooks 4 to retract in close proximity, releasing the hooks and allowing the guide vane sleeve to be removed from the four L-shaped hooks 4.

[0043] 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.

Claims

1. A device for disassembling the guide vane bushing of a hydropower station generator set, comprising a U-shaped bracket (1), characterized in that: include: The U-shaped bracket (1) has an outer edge integrally provided on both bottom sides; The lifting vertical guide drive mechanism is installed on the U-shaped bracket (1); The four-way synchronous expansion and contraction mechanism is fixedly connected to the inner side of the lifting vertical guide drive mechanism. Its bottom is fixedly connected with four L-shaped hooks (4) at equal intervals in a ring shape, and the two opposite L-shaped hooks (4) are symmetrically arranged.

2. The hydropower station generator set guide vane sleeve disassembly device according to claim 1, characterized in that: The lifting vertical guide drive mechanism includes a first multi-stage electric telescopic rod (101), a lifting plate (102), and two vertical guide rods (103). The first multi-stage electric telescopic rod (101) is fixedly installed on the top of the U-shaped bracket (1), the lifting plate (102) is fixedly installed on the extended end of the first multi-stage electric telescopic rod (101), and the two vertical guide rods (103) are fixedly connected to the bottom of the lifting plate (102). The U-shaped bracket (1) is slidably sleeved on the two vertical guide rods (103).

3. The hydropower station generator set guide vane bushing disassembly device according to claim 2, characterized in that: The four-way synchronous expansion and contraction mechanism includes two discs (2) and four connecting rods (201). The four connecting rods (201) are fixedly connected in a ring at equal intervals between the two discs (2). The upper disc (2) is fixedly connected between two vertical guide rods (103). The top of each of the two discs (2) is provided with four rectangular perforations (202) at equal intervals in a ring. Horizontal guides are fixedly connected between the inner walls of the rectangular perforations (202) on both sides and between the inner walls of the rectangular perforations (202) on the front and rear sides. The same moving rod (204) is slidably sleeved on the two horizontal guide rods (203) on the same side. Two springs (205) are fixedly connected to the opposing sides of the four moving rods (204). The springs (205) are movably sleeved on the corresponding horizontal guide rods (203) and fixedly connected to the side wall of the rectangular through hole (202). The bottom ends of the four moving rods (204) are fixedly connected to the top ends of the corresponding L-shaped claws (4). The same four-way expansion and contraction drive assembly is installed between the four moving rods (204).

4. The hydropower station generator set guide vane bushing disassembly device according to claim 3, characterized in that: The four-way expansion and contraction drive assembly includes a rectangular rod (302), a second multi-stage electric telescopic rod (3), and four connecting rods (301). The rectangular rod (302) is located between the four moving rods (204). The disk (2) located below is slidably sleeved on the rectangular rod (302). The four sides of the rectangular rod (302) are rotatably connected to the bottom of the corresponding connecting rod (301). The sides of the four moving rods (204) that are close to each other are rotatably connected to the top of the corresponding connecting rod (301). The two opposite connecting rods (301) are arranged symmetrically and inclined. The second multi-stage electric telescopic rod (3) is embedded and fixed in the middle of the bottom of the upper disk (2). The extended end of the second multi-stage electric telescopic rod (3) is fixedly connected to the top of the rectangular rod (302).

5. The hydropower station generator set guide vane bushing disassembly device according to claim 4, characterized in that: The rectangular rod (302) is fixedly connected to U-shaped seats (303) on all four sides. The four moving rods (204) are provided with grooves on the adjacent sides. Support shafts (304) are fixedly connected between the inner walls of the two sides of the grooves and between the inner walls of the two sides of the U-shaped seats (303). The connecting rod (301) is provided with round through holes on the top and bottom sides of one side. Bearings are fixedly fitted in the round through holes. The inner ring of the bearing is fixedly fitted to the outer side of the corresponding support shaft (304).

6. The hydropower station generator set guide vane bushing disassembly device according to claim 4, characterized in that: A lithium battery is fixedly installed on the inner left side of the U-shaped bracket (1), and the first multi-stage electric telescopic rod (101) and the second multi-stage electric telescopic rod (3) are both electrically connected to the lithium battery.

7. The hydropower station generator set guide vane bushing disassembly device according to claim 4, characterized in that: The top of the U-shaped bracket (1) is provided with a clearance hole, which is located above and adapted to the second multi-stage electric telescopic rod (3).

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