Ground knife locking device of high-voltage isolating switch

Abstract

The utility model relates to the technical field of air-insulated open-type high-voltage transformer substations, in particular to a high-voltage isolating switch grounding knife locking device, which is characterized in that a set of fixed locking device is designed on an original grounding knife rod bracket, personnel can conveniently operate on the ground, and when a grounding knife switch is switched off, a grounding knife rod is fixed and locked and is prevented from being switched on by mistake; when the ground knife bar is switched on, the locking device is opened, so that the ground knife bar is normally switched on; comprising a support, a rotating pressing plate, a compression spring, a grounding knife bar, a bracket and grounding knife bar angle steel, the support is connected with the grounding knife bar angle steel, the grounding knife bar can be placed in the support, the rotating pressing plate is designed and assembled into a locking device, the locking device and the bracket are fixed to the grounding knife bar angle steel through screws, the bracket is designed and installed on the grounding knife bar angle steel, and the compression spring is arranged on the grounding knife bar angle steel. A mounting plate of the bracket is designed to be a strip-shaped hole capable of moving up and down, is connected with a strip-shaped hole of the ground cutter bar angle steel through a screw, has a left-right moving space, and fixes the ground cutter bar together with the ground cutter bar fixing device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of open high voltage substation of air insulation, specifically is a high voltage disconnecting switch ground knife locking device. BACKGROUND

[0002] The ground switch matched with GW7B-800 disconnecting switch is driven by operating mechanism through transmission device to move ground knife upward or downward, realizes the operation of opening and closing, and the ground knife is composed of ground knife tube and movable contact. If the ground switch is in the position of opening, the transmission member of any link in transmission device is damaged or separated under the action of strong wind and other external force, at this time, the ground knife will lose the constraint, and the ground knife can rotate upward under the action of wind force or other external force, can approach the closing direction, and causes the ground switch to mis-close or the disconnecting switch to break down to the ground, which causes huge loss to power equipment or power system.

[0003] The existing ground knife rod locking device has the defects that the ground knife rod cannot be locked, the locking can be invalid under the action of strong wind or other external force, and serious consequences of mis-closing of the ground knife rod can be caused. In order to fix the ground knife rod and avoid misoperation caused by up and down swinging of the ground knife rod under the action of strong wind, a method of binding the ground knife rod on the angle steel supporting the ground knife rod by a rope is often used in the northwest power station. Although this method can avoid mis-closing of the ground knife rod, the operator needs to climb 4 meters to complete the binding, and needs to untie the rope before closing, which is not standard, affects the appearance, and has personnel safety hazards. CONTENT OF THE UTILITY MODEL

[0004] (I) Technical problem solved

[0005] In view of the defects of the prior art, the utility model provides a set of fixed locking device designed on the original ground knife rod bracket, which is convenient for personnel to operate on the ground, fixes and locks the ground knife rod when the ground knife switch is opened, and prevents mis-closing of the ground knife rod; when the ground knife rod is closed, the locking device is opened, so that the ground knife rod can be normally closed.

[0006] (II) Technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a high -voltage disconnecting switch ground knife locking device, including support, rotating pressure plate, compression spring, ground knife rod, bracket and to ground knife rod angle steel, the support is connected with to ground knife rod angle steel, and can put into ground knife rod, design rotating pressure plate, the pivot of rotating pressure plate is inserted to the riser of support, the middle is equipped with the compression spring of design, is assembled into the locking device, locking device and bracket are fixed to to ground knife rod angle steel with screw, design bracket, the bracket is installed on to ground knife rod angle steel, and the mounting plate of bracket is designed into the long hole of up and down movement, and is connected with to ground knife rod angle steel long hole with screw, has left and right movement space, and ground knife rod fixing device fixes ground knife rod together.

[0008] Preferably, it further includes rubber pad and adjusting screw, the adjusting screw is equipped to rotating pressure plate center threaded hole, and rubber pad is pasted to the end of adjusting screw.

[0009] Preferably, it further includes operating tool, the elbow of L type spanner of operating tool is inserted into the hole of pivot of rotating pressure plate of ground knife rod fixing device.

[0010] (Three) beneficial effects

[0011] Compared with the prior art, the utility model provides a high -voltage disconnecting switch ground knife locking device, has the following beneficial effects:

[0012] When locking, the operator stands on the ground, uses operating tool, and pulls operating tool to rotate, and rotating pressure plate enters the locking slot of the locking plate of support, and operating tool is removed, and operation is completed, when ground knife is needed to close, operating tool is used, and reverse operation is operated, and locking device is opened, and personnel are conveniently operated on the ground, when ground knife is opened, ground knife rod is fixed and locked, and the ground knife rod is prevented from being closed by mistake, when ground knife rod is closed, locking device is opened, so that ground knife rod is normally closed. DRAWINGS

[0013] Figure 1 It is whole structure schematic diagram of the utility model;

[0014] Mark in drawing: 1, support;2, rotating pressure plate;3, compression spring;4, ground knife rod;5, rubber pad;6, adjusting screw;7, bracket;8, to ground knife rod angle steel;9, limit pin;10, operating tool. Specific embodiments

[0015] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0016] Embodiment

[0017] Please refer to Figure 1 A high-voltage isolating switch ground blade locking device, comprising a support 1, a rotating pressure plate 2, a compression spring 3, a ground blade rod 4, a bracket 7 and a ground blade rod angle steel 8, the support 1 is connected with the ground blade rod angle steel 8 and can be put into the ground blade rod 4, the rotating pressure plate 2 is designed, the rotating shaft of the rotating pressure plate 2 is inserted into the vertical pipe of the support 1, the compression spring 3 is installed in the middle, the locking device is assembled, the locking device and the bracket 7 are fixed on the ground blade rod angle steel 8 by screws, the bracket 7 is designed and installed on the ground blade rod angle steel 8, the mounting plate of the bracket 7 is designed as a long hole moving up and down, and is connected with the long hole of the ground blade rod angle steel 8 by screws, has a left-right moving space, and fixes the ground blade rod 4 together with the ground blade rod fixing device; the compression spring 3 is installed in the shaft of the rotating pressure plate 2, then the shaft of the rotating pressure plate 2 is inserted into the pipe of the support 1, a limit pin 9 is installed, open pins are installed on both sides, the limit pin 9 adjusts the height of the rotating pressure plate 2, is consistent with the upper edge of the opening of the locking plate of the support 1, and makes the compression spring 3 generate appropriate pressure.

[0018] Further comprising a rubber pad 5 and an adjusting screw 6, the adjusting screw 6 is installed in the center threaded hole of the rotating pressure plate 2, and the rubber pad 5 is pasted on the end of the adjusting screw; the long hole of the bracket 7 and the long hole of the ground blade rod angle steel 8 can make the locking device and the bracket 7 adjust left and right and up and down, find the center of the ground blade rod according to the on-site situation, make the center of the bracket 7 and the locking device consistent, adjust the adjusting screw to the appropriate position, tighten the locking nut, press the ground blade rod 4 after the device is locked, and at the same time, it is convenient to open.

[0019] Further comprising an operating tool 10, the bend of the L-shaped wrench of the operating tool 10 is inserted into the hole of the rotating shaft of the rotating pressure plate 2 of the ground blade rod 4 fixing device; when the locking is operated, the operator stands on the ground, the actual length of the operating tool 10 is 3000mm, the operating tool 10 is pulled lightly to rotate, the rotating pressure plate 2 enters the locking groove of the locking plate of the support 1, the operating tool is removed, the operation is completed, when the ground blade needs to be closed, the operating tool is used to operate reversely to open the locking device.

[0020] The device can realize the fixed locking of the isolating switch ground blade rod in the open state, solve the serious problem that the isolating switch ground blade rod is mis-closed under the action of external force such as strong wind in the open state.

[0021] The advantage is that the support, the rotating shaft pressing plate, the compression spring and the bracket are reasonably combined into the locking device, the structure is novel and practical, the operating tool is composed of an insulating rod and an L wrench, the operator can conveniently operate the locking device on the ground by using the operating tool, and the operation is simple and safe, the ground blade rod bracket is designed as a bracket with proper elasticity, cooperates with the rubber pad below the positioning pin of the locking device, fixes the ground blade rod, and can effectively prevent the ground blade rod from being bumped and scratched, the existing working conditions are reasonably utilized, the ground blade rod is locked, and misoperation is prevented.

[0022] The key point and the protection point are the structure of the locking device, the support, the rotating shaft pressing plate, the compression spring and the bracket are cleverly matched, the compression spring is designed to be suitable, the compression spring supports the rotating shaft pressing plate, the rotating shaft pressing plate can move up and down within a certain distance range, the deformation and the elastic force of the compression spring are matched with the weight and the moving amount of the rotating shaft pressing plate, the operating tool is simple, convenient and safe, the bracket elastic structure cooperates with the adjusting screw of the locking device, the ground blade rod is given a certain pressure through the rubber pad, and the ground blade rod is prevented from being bumped and scratched.

[0023] When the locking operation is performed, the operator stands on the ground, the actual length of the operating tool 10 is 3000mm, the operating tool 10 is pulled and rotated, the pressing plate 2 is rotated into the locking groove of the locking plate of the support 1, the operating tool is removed, the operation is completed, when the ground blade is needed to be closed, the operating tool is used to perform reverse operation, the locking device is opened, the operator can conveniently operate on the ground, and the ground blade rod is fixed and locked when the ground blade is opened, so that the ground blade rod is prevented from being mistakenly closed.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-voltage disconnector ground-knife locking device, characterized in that, It comprises a bracket (1), a rotating pressure plate (2), a compression spring (3), a land roller rod (4), a bracket (7) and a land roller rod angle steel (8), the bracket (1) is connected with the land roller rod angle steel (8) and can be put into the land roller rod (4), the rotating pressure plate (2) is designed, the rotating shaft of the rotating pressure plate (2) is inserted into the vertical pipe of the bracket (1), the compression spring (3) is installed in the middle, the locking device is assembled, the locking device is fixed on the land roller rod angle steel (8) by the bracket (7) with screws, the bracket (7) is designed, the bracket (7) is installed on the land roller rod angle steel (8), the mounting plate of the bracket (7) is designed as a long hole moving up and down, and is connected with the long hole of the land roller rod angle steel (8) by screws, has a left and right moving space, and fixes the land roller rod (4) with the land roller rod fixing device.

2. The high-voltage disconnector ground blade locking device according to claim 1, characterized in that: It also comprises a rubber pad (5) and an adjusting screw (6), the adjusting screw (6) is installed in the center threaded hole of the rotating pressure plate (2), and the end of the adjusting screw is pasted with the rubber pad (5).

3. The high-voltage disconnector ground blade locking device according to claim 2, characterized in that: It also comprises an operating tool (10), the bend of the L-shaped wrench of the operating tool (10) is inserted into the hole of the rotating shaft of the rotating pressure plate (2) of the land roller rod (4) fixing device.

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