Take-up and pay-off device for high-voltage side steel-cored aluminum strand of transformer

Abstract

A winding and unwinding device for a transformer high-voltage side steel-cored aluminum strand comprises a supporting plate, a winch and a hanging tool, a first hoop is fixedly arranged on one side of the supporting plate, a second hoop is used for being installed on the first hoop, the winch is arranged above the other side of the supporting plate, and a steel wire rope on the winch is connected with the hanging tool; during use, the first hoop and the second hoop are used for being installed on a binding post at the upper end of a high-voltage bushing. The winch is installed on the binding post at the upper end of the high-voltage bushing through the first hoop and the second hoop, the upper end of the binding post further extends out for a certain distance, the hanging tool is installed on a steel wire rope of the winch, the steel wire rope is connected with the steel-cored aluminum strand through the hanging tool, and therefore the steel-cored aluminum strand can be conveniently released or pulled back.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance, in particular to a retractable device for steel-core aluminum stranded wires at a high-voltage side of a transformer. Background Art

[0002] When large transformers such as power stations and substations are being overhauled, it involves disassembling the steel-core aluminum stranded wire on the high-voltage bushing on the high-voltage side of the transformer. When disassembling, just remove the connecting bolts between the Y-shaped wiring device on the high-voltage bushing and the core aluminum stranded wire joint to remove the steel-core aluminum stranded wire from the high-voltage bushing. When installing, the core aluminum stranded wire needs to be reinstalled on the terminal at the upper end of the high-voltage bushing. Due to the long length and heavy weight of the steel-core aluminum stranded wire, it is not convenient to release or pull the steel-core aluminum stranded wire freely. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and provide a retractable device for steel-core aluminum stranded wire on the high-voltage side of a transformer, wherein a winch is installed on a terminal post at the upper end of a high-voltage bushing through a first clamp and a second clamp, and the upper end of the terminal post is also extended for a certain distance, and a hanger is installed on the steel wire rope of the winch, which is connected to the steel-core aluminum stranded wire through the hanger, thereby facilitating the release or pulling back of the steel-core aluminum stranded wire.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a retractable device for steel-core aluminum stranded wire on the high-voltage side of a transformer, comprising a support plate, a winch and a hanger, wherein a first clamp is fixedly provided on one side of the support plate, and a second clamp is used to be installed on the first clamp, and a winch is arranged above the other side of the support plate, and the steel wire rope on the winch is connected to the hanger; when in use, the first clamp and the second clamp are used to be installed on the terminal at the upper end of the high-voltage bushing.

[0005] A support plate is arranged above the other side of the support plate, and the winch is mounted on the support plate.

[0006] One side of the second hoop is pivotally connected to one side of the first hoop, a screw is provided on the other side of the first hoop, and a notch is provided on the other side of the second hoop. When the second hoop and the first hoop are closed, the screw enters the notch, and a nut is screwed on the screw to fix the second hoop.

[0007] The winch is a manual winch or an electric winch.

[0008] The hanger includes a U-shaped seat, a side plate and a limit pin. The lower middle part of the U-shaped seat is connected and fixed to the steel wire rope. Two L-shaped side plates are respectively fixed to the side walls on both sides of the U-shaped seat. A mounting position is formed between the side plates and the U-shaped seat. Limit holes are provided on the side plates and the side walls of the U-shaped seat. When in use, the limit pin is inserted into the limit holes on the side plates and the side walls of the U-shaped seat, or is inserted into the two limit holes and screwed with one of the limit holes.

[0009] The hanging tool is a hook.

[0010] The utility model has the following beneficial effects:

[0011] The winch of the utility model is installed on the terminal post at the upper end of the high-voltage bushing through the first clamp and the second clamp, and the upper end of the terminal post is extended for a distance. A hanger is installed on the steel wire rope of the winch, and is connected with the steel-core aluminum stranded wire through the hanger, so that the steel-core aluminum stranded wire can be easily released or pulled back. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic structural diagram of the first embodiment of the utility model.

[0014] Figure 2 This is a schematic structural diagram of the second embodiment of the utility model.

[0015] Figure 3 This is a state diagram used in the present utility model.

[0016] In the figure: a support plate 10, a first clamp 11, a second clamp 12, a screw 13, a notch 14, a nut 15, a support plate 16, a winch 20, a steel wire rope 21, a hanger 30, a U-shaped seat 31, a side plate 32, a mounting position 33, a limiting hole 34, a limiting pin 35, a high-voltage bushing 40, a terminal 41, a Y-shaped terminal block 42, and a steel-core aluminum stranded wire 50. DETAILED DESCRIPTION

[0017] See also Figure 1-2 A retractable device for steel-core aluminum stranded wire on the high-voltage side of a transformer comprises a support plate 10, a winch 20 and a hanger 30. A first clamp 11 is fixedly arranged on one side of the support plate 10, and a second clamp 12 is used to be installed on the first clamp 11. A winch 20 is arranged above the other side of the support plate 10, and a steel wire rope 21 on the winch 20 is connected to the hanger 30. When in use, the first clamp 11 and the second clamp 12 are used to be installed on the terminal 41 at the upper end of the high-voltage bushing 40. The winch 20 is installed on the terminal 41 at the upper end of the high-voltage bushing 40 through the first clamp 11 and the second clamp 12, and the upper end of the terminal 41 is extended for a distance. The hanger 30 is installed on the steel wire rope 21 of the winch 20, and is connected to the steel-core aluminum stranded wire 50 through the hanger, so as to facilitate the release or retraction of the steel-core aluminum stranded wire 50.

[0018] Specifically, a first clamp 11 is welded on one side of the support plate 10 , and a capstan 20 is welded on the other side of the support plate 10 . The capstan 20 is spaced a distance from the terminal 41 , and the capstan 20 does not interfere with the installation of the Y-shaped terminal block 42 .

[0019] Furthermore, a support plate 16 is provided above the other side of the support plate 10 , and the winch 20 can be mounted on the support plate 16 by bolts.

[0020] The first hoop 11 can be connected to the second hoop 12 by bolts. In a preferred solution, one side of the second hoop 12 is pivotally connected to one side of the first hoop 11, and the first hoop 11 can rotate around the pivot. A screw 13 is provided on the other side of the first hoop 11, and a notch 14 is provided on the other side of the second hoop 12. When the second hoop 12 is closed with the first hoop 11, the screw 13 enters the notch 14, and a nut 15 is screwed on the screw 13 to fix the second hoop 12. The above structure facilitates the connection, fixing and opening of the first hoop 11 and the second hoop 12. Preferably, the nut 15 is a hand-tightened nut.

[0021] Specifically, the winch 20 is a manual winch or an electric winch. Both the manual winch and the electric winch are prior art and can be purchased on the market. The electric winch is preferably a portable winch with a battery.

[0022] In one of the schemes, see Figure 1 The hanger 30 includes a U-shaped seat 31, a side plate 32 and a limit pin 35. The lower middle part of the U-shaped seat 31 is connected and fixed to the wire rope 21. Two L-shaped side plates 32 are respectively fixed to the side walls on both sides of the U-shaped seat 31. A mounting position 33 is formed between the side plates 32 and the U-shaped seat 31. Limit holes 34 are set on the side plates 32 and the side walls of the U-shaped seat 31. When in use, the limit pin 35 is inserted into the limit holes 34 on the side plates 32 and the side walls of the U-shaped seat 31, or penetrates into the two limit holes 34 and is screwed with one of the limit holes 34. See Figure 3 When the steel core aluminum stranded wire 50 is disassembled from the Y-shaped terminal block 42, the steel core aluminum stranded wire 50 can be towed by the structure of the above-mentioned hanger 30. During towing, the connector at the end of the steel core aluminum stranded wire 50 is inserted into the mounting position 33, and the limiting pin 35 is inserted into the limiting hole 34 on the side plate 32 and the side wall of the U-shaped seat 31, or is inserted into the two limiting holes 34 and screwed with one of the limiting holes 34, thereby connecting the steel core aluminum stranded wire 50 to the hanger 30.

[0023] In another embodiment, see Figure 2 When the Y-shaped terminal block 42 is not separated from the steel core aluminum stranded wire 50, the Y-shaped terminal block 42 is generally not separated, but only loosened. Figure 3 , so that the Y-shaped terminal block 42 can be directly hooked by the hook.

[0024] The working principle or action process of the utility model is as follows:

[0025] When in use, the retractable device is first installed to the lower end of the terminal 41 through the first clamp 11 and the second clamp 12, and the retractable device is fixed to the terminal 41. Then, the hanger 30 on the steel wire rope of the winch 20 is connected to the steel core aluminum stranded wire 50 or the Y-shaped terminal block 42, and the steel core aluminum stranded wire 50 is released away from the high-voltage bushing 40, or the steel core aluminum stranded wire 50 is pulled close to the high-voltage bushing 40.

Claims

1. The retracting and releasing device of steel core aluminum stranded wire on the high voltage side of the transformer is characterized by: The invention comprises a support plate (10), a winch (20) and a hanger (30); a first clamp (11) is fixedly provided on one side of the support plate (10); a second clamp (12) is used to be mounted on the first clamp (11); a winch (20) is arranged above the other side of the support plate (10); a steel wire rope (21) on the winch (20) is connected to the hanger (30); when in use, the first clamp (11) and the second clamp (12) are used to be mounted on a terminal (41) at the upper end of a high-voltage bushing (40).

2. The retractable and unretractable device for steel-core aluminum stranded wire at the high voltage side of the transformer according to claim 1 is characterized in that: A support plate (16) is provided above the other side of the support plate (10), and the capstan (20) is mounted on the support plate (16).

3. The retractable and unretractable device for steel-core aluminum stranded wire at the high voltage side of the transformer according to claim 1 is characterized in that: One side of the second hoop (12) is pivotally connected to one side of the first hoop (11); a screw rod (13) is provided on the other side of the first hoop (11); and a notch (14) is provided on the other side of the second hoop (12); when the second hoop (12) and the first hoop (11) are closed, the screw rod (13) enters the notch (14), and a nut (15) is screwed onto the screw rod (13) to fix the second hoop (12).

4. The retractable and unretractable device for steel-core aluminum stranded wire at the high voltage side of the transformer according to claim 1, characterized in that: The winch (20) is a manual winch or an electric winch.

5. The retractable device for steel-core aluminum stranded wire at the high-voltage side of the transformer according to claim 1 is characterized in that: The hanger (30) comprises a U-shaped seat (31), a side plate (32) and a limit pin (35). The lower middle part of the U-shaped seat (31) is connected and fixed to the steel wire rope (21). Two L-shaped side plates (32) are respectively fixed to the side walls on both sides of the U-shaped seat (31). A mounting position (33) is formed between the side plates (32) and the U-shaped seat (31). Limit holes (34) are provided on the side plates (32) and the side walls of the U-shaped seat (31). When in use, the limit pin (35) is inserted into the limit holes (34) on the side plates (32) and the side walls of the U-shaped seat (31), or penetrates into the two limit holes (34) and is screwed with one of the limit holes (34).

6. The retractable device for steel-core aluminum stranded wire at the high voltage side of the transformer according to claim 1, characterized in that: The hanger (30) is a hook.

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