Device for removing stator bars

Abstract

The utility model provides a kind of dismantling device of stator bar, its technical scheme is: including base, the middle part of base is provided with through-hole, adjusting rod is arranged in through-hole, adjusting rod is threadedly connected with sheep's head nut, the lower end of adjusting rod is equipped with jaw, base is also symmetrically provided with sliding slot, horizontal adjusting mechanism is equipped on sliding slot, and horizontal adjusting mechanism is connected with longitudinal adjusting mechanism.The utility model has the beneficial effects that (1) horizontal distance flexible positioning;(2) longitudinal height accurate adaptation;(3) nondestructive lifting stator bar.

Description

Technical Field

[0001] This utility model belongs to the field of generator-related accessory repair tools, and in particular relates to a device for removing stator bars. Background Technology

[0002] The stator bars are welded together to form the stator winding as a whole by parallel blocks. They adopt a continuous F-class epoxy powder mica insulation system. The ends are bound together with beveled pads and end clamps. The end surfaces of the bars have anti-corona treatment measures.

[0003] During generator stator bar installation, the bar surface is covered with a thick layer of semiconductor slot liner paper and semiconductor adhesive, which is then embedded into the core slot and tightly adheres to the inner wall of the core slot. If a bar malfunctions, it needs to be removed and replaced. The common method for removing bar involves tying slings to the top and bottom of the bar and manually using a crowbar or hand-operated hoist to pry it out from the end. This method is labor-intensive, inefficient, and can easily damage adjacent bars.

[0004] Therefore, it is necessary to study a device for removing generator stator bars to achieve efficient, safe, and labor-saving removal of stator bars. Summary of the Invention

[0005] To address the problems in the prior art, this utility model proposes a stator bar removal device. The technical solution includes a base with a through hole in the middle. An adjusting rod is installed in the through hole and threadedly connected to a nut. The lower end of the adjusting rod is provided with a gripper. The base is also symmetrically provided with sliding grooves, and a horizontal adjusting mechanism is provided on the sliding grooves. The horizontal adjusting mechanism is connected to the vertical adjusting mechanism.

[0006] In a preferred embodiment, the leveling mechanism includes a fixed block and a sliding rod. The fixed block is fixedly installed at both ends of the slide groove, and the slide rod is also provided inside the slide groove, with both ends of the sliding rod fixedly connected to the fixed block.

[0007] In a preferred embodiment, the slide bar is slidably connected to the longitudinal adjustment mechanism.

[0008] In a preferred embodiment, the longitudinal adjustment mechanism includes a longitudinal adjustment base, a longitudinal fixing rod, a longitudinal adjustment rod, and a pin. The longitudinal adjustment base is slidably connected to the slide rod. The bottom of the longitudinal adjustment base is provided with a longitudinal fixing rod, and the longitudinal fixing rod is provided with evenly spaced insertion holes. The longitudinal adjustment rod is also provided with insertion holes. The longitudinal fixing rod is sleeved with the longitudinal adjustment rod by inserting a pin into the insertion holes.

[0009] In a preferred embodiment, the gripper includes a first connecting block, an adjusting rod that passes through the first connecting block and is threadedly connected to a second connecting block, a chuck is provided on both sides of the second connecting block, the second connecting block and the middle section of the chuck are hinged, the upper part of the chuck is hinged to a first movable rod and a second movable rod respectively, and a spring is sleeved on the adjusting rod between the first connecting block and the second connecting block.

[0010] In a preferred embodiment, there are two of each of the first and second movable rods, which are symmetrically arranged with the clamps on the same side.

[0011] In a preferred embodiment, the lower inner side of the chuck is provided with anti-slip texture to increase the friction between the chuck and the stator bar.

[0012] In a preferred embodiment, a retaining ring is also fixedly provided around the base.

[0013] The beneficial effects of this utility model are:

[0014] (1) Horizontal distance flexible positioning: The sliding groove and sliding rod symmetrically arranged on the base form a horizontal adjustment mechanism. The longitudinal adjustment base can slide freely along the sliding rod to realize the lateral position adjustment of the device within a certain range. It can be aligned with the bar to be disassembled in different columns without manual movement of the base, and adapts to the dense arrangement of stator core slots.

[0015] (2) Precise longitudinal height adaptation: The longitudinal adjustment mechanism is connected to the pin of the adjusting rod through the insertion hole of the longitudinal fixing rod and the insertion hole of the adjusting rod, and can adjust the height in stages within a certain range to accommodate the installation height differences of stator bars of different generator models;

[0016] (3) Non-destructive lifting of stator bars: A lifting machine is set at the top of the adjusting rod, which can pull out the stator bars clamped by the claws without damage. The anti-slip texture further increases the friction between the claws and the bars, improves the pulling efficiency, and reduces the probability of the claws sliding or falling off during the dismantling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the usage process of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 3 This is a front view of the present invention.

[0020] In the diagram: 1. Base; 2. Fixing ring; 3. Horizontal adjustment mechanism; 301. Fixing block; 302. Slide rod; 4. Longitudinal adjustment mechanism; 401. Longitudinal adjustment base; 402. Longitudinal fixing rod; 403. Longitudinal adjustment rod; 404. Pin; 5. Adjusting rod; 6. Gripper; 601. First connecting block; 602. Clamp; 603. Spring; 604. First movable rod; 605. Second connecting block; 606. Anti-slip texture; 607. Second movable rod; 7. Razor nut. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figure 2-3 The stator bar removal device shown includes a base 1, a through hole in the middle of the base 1, an adjusting rod 5 in the through hole, the adjusting rod 5 being threadedly connected to a nut 7, a claw 6 at the lower end of the adjusting rod 5, and a sliding groove 8 symmetrically provided on the base 1, a horizontal adjusting mechanism 3 on the sliding groove 8, and the horizontal adjusting mechanism 3 being connected to a vertical adjusting mechanism 4.

[0024] Furthermore, the horizontal adjustment mechanism 3 includes a fixed block 301 and a slide rod 302. The fixed block 301 is fixedly installed at both ends of the slide groove 8, and the slide rod 302 is also provided in the slide groove 8. The two ends of the slide rod 302 are fixedly connected to the fixed block 301.

[0025] Furthermore, the slide bar 302 is slidably connected to the longitudinal adjustment mechanism 4.

[0026] Furthermore, the longitudinal adjustment mechanism 4 includes a longitudinal adjustment base 401, a longitudinal fixing rod 402, a longitudinal adjustment rod 403, and a pin 404. The longitudinal adjustment base 401 is slidably connected to the slide rod 302. The longitudinal adjustment base 401 is provided with a longitudinal fixing rod 402 at its bottom. The longitudinal fixing rod 402 is provided with evenly spaced insertion holes. The longitudinal adjustment rod 403 is also provided with insertion holes. The longitudinal fixing rod 402 is sleeved with the longitudinal adjustment rod 403 by inserting the pin 404 into the insertion holes.

[0027] Furthermore, the gripper 6 includes a first connecting block 601, an adjusting rod 5 passing through the first connecting block 601 and threadedly connected to a second connecting block 605, a chuck 602 on both sides of the second connecting block 605, the second connecting block 605 and the middle section of the chuck 602 are hinged, the upper part of the chuck 602 is hinged to a first movable rod 604 and a second movable rod 607 respectively, and a spring 603 is sleeved on the adjusting rod 5 between the first connecting block 601 and the second connecting block 605.

[0028] Furthermore, there are two of each of the first movable rod 604 and the second movable rod 607, which are symmetrically arranged with the clamp 602 on the same side.

[0029] Furthermore, the lower inner side of the chuck 602 is provided with anti-slip texture 606 to increase the friction between the chuck 602 and the stator bar.

[0030] Furthermore, a fixing ring 2 is also fixedly provided around the base 1.

[0031] The above-mentioned dismantling device is used as follows: After moving the longitudinal adjustment base 401 to a suitable position, pull out the pin 404, adjust the height of the longitudinal adjustment rod 403 connected to the longitudinal fixing rod 402 to complete the height adjustment of the entire device, insert the pin 404 after adjusting the height, fix the height, pull down the first connecting block 601, the clamp 605 opens, tighten the nut 7 to make the clamp 605 clamp the stator bar to be pulled out, and then fix the adjustment rod 5 to the slider of the linear guide (the linear guide is existing technology and is not shown in the figure), start the linear guide, and the stator bar can be pulled out.

Claims

1. A device for removing stator bars, characterized in that, Includes a base (1), with a through hole in the middle of the base (1), an adjusting rod (5) is installed in the through hole, the adjusting rod (5) is threadedly connected to a nut (7), the lower end of the adjusting rod (5) is provided with a claw (6), the base (1) is also symmetrically provided with a sliding groove (8), a horizontal adjusting mechanism (3) is provided on the sliding groove (8), and the horizontal adjusting mechanism (3) is connected to the vertical adjusting mechanism (4).

2. The stator bar removal device according to claim 1, characterized in that, The horizontal adjustment mechanism (3) includes a fixed block (301) and a slide rod (302). The fixed block (301) is fixedly installed at both ends of the slide groove (8). The slide groove (8) is also provided with a slide rod (302), and the two ends of the slide rod (302) are fixedly connected to the fixed block (301).

3. The stator bar removal device according to claim 2, characterized in that, The slide bar (302) is slidably connected to the longitudinal adjustment mechanism (4).

4. The stator bar removal device according to claim 3, characterized in that, The longitudinal adjustment mechanism (4) includes a longitudinal adjustment base (401), a longitudinal fixing rod (402), a longitudinal adjustment rod (403), and a pin (404). The longitudinal adjustment base (401) is slidably connected to the slide rod (302). The longitudinal adjustment base (401) is provided with a longitudinal fixing rod (402) at its bottom. The longitudinal fixing rod (402) is provided with evenly spaced insertion holes. The longitudinal adjustment rod (403) is also provided with insertion holes. The longitudinal fixing rod (402) is sleeved with the longitudinal adjustment rod (403) by inserting the pin (404) into the insertion hole.

5. The stator bar removal device according to claim 1, characterized in that, The gripper (6) includes a first connecting block (601), an adjusting rod (5) threaded through the first connecting block (601) and connected to the second connecting block (605), a chuck (602) is provided on both sides of the second connecting block (605), the second connecting block (605) is hinged to the middle section of the chuck (602), the upper part of the chuck (602) is hinged to the second movable rod (607) through the first movable rod (604), and a spring (603) is sleeved on the adjusting rod (5) between the first connecting block (601) and the second connecting block (605).

6. The stator bar removal device according to claim 5, characterized in that, The first movable rod (604) and the second movable rod (607) are each provided in twos, and are respectively arranged symmetrically with the clamp (602) on the same side.

7. The stator bar removal device according to claim 5, characterized in that, The lower inner side of the chuck (602) is provided with anti-slip texture (606) to increase the friction between the chuck (602) and the stator bar.

8. The stator bar removal device according to claim 1, characterized in that, A fixing ring (2) is also fixedly installed around the base (1).

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