Power machine's high voltage isolating switch power wrench

Abstract

The utility model discloses a high -voltage isolating switch is with power locomotive's power-assisted wrench, including head structure and handle structure, head structure includes U type front end and L type rear end, U type front end and L type rear end all are connected with handle structure fixedly, U type front end and L type rear end are located hand wheel banner both sides, power-assisted wrench horizontal overturn changes head structure direction. The head structure of power-assisted wrench is in the combined form of U type front end and L type rear end, and is accurately adapted to the banner both sides of high -voltage isolating switch hand wheel, can form the high degree of bonding of carding positioning with banner, and simultaneously with the structural design of horizontal overturn head, need not change tool to switch head direction, cooperate " the operation logic that the banner top counterclockwise is completed and the banner below clockwise is completed close", and the operation action is strongly bound with the adaptation position of head, and cooperate handle structure to conveniently and quickly operate high -voltage isolating switch hand wheel.

Description

Technical Field

[0001] This utility model belongs to the field of high-voltage disconnector control technology, and in particular relates to an assist wrench for high-voltage disconnectors in electric locomotives. Background Technology

[0002] Electric locomotives, also known as electric trains, are trains that obtain electrical energy from the power grid (overhead contact network) or power rails and then drive the vehicles through electric motors. The Harmony Electric 1C locomotive is a high-power AC drive six-axle 7200kW electric locomotive with completely independent intellectual property rights in my country. The Harmony Electric 1C locomotive uses a high-voltage disconnect switch, which is a circular handwheel switch with three connecting rods distributed at 120-degree angles. This handwheel is installed on the ceiling of the locomotive's electrical compartment, approximately two meters from the floor. Its working principle is that by manually rotating the circular handwheel, the moving and stationary contacts of the high-voltage disconnect switch are separated, thereby achieving the purpose of switching the locomotive's main circuit on and off.

[0003] However, due to the high mounting position and small size of the handwheel, it is difficult to apply force, making operation difficult and requiring a specific power-assisted wrench to operate. Utility Model Content

[0004] This utility model addresses the problem that the high-voltage isolation handwheel in the prior art is small in size and difficult to apply force, and proposes the following technical solution: A power-assisted wrench for a high-voltage disconnecting switch on an electric locomotive includes a head structure and a handle structure. The head structure includes a U-shaped front end and an L-shaped rear end, both of which are fixedly connected to the handle structure. The U-shaped front end and the L-shaped rear end are located on both sides of the handwheel spoke. The power-assisted wrench can be horizontally flipped to change the direction of the head structure. The head structure can be inserted above the handwheel spoke and rotated counterclockwise to complete the disconnection operation. The head structure can be inserted below the handwheel spoke and rotated clockwise to complete the closing operation.

[0005] As a preferred embodiment of the above technical solution, the handle structure includes a middle rod, a connecting rod, and an extension rod. The two ends of the middle rod are respectively rotatably inserted into the connecting rod and the extension rod. The extension rod is folded and fitted to the connecting rod through the middle rod. A fixing component for fixing the connecting rod and the extension rod is provided inside the middle rod.

[0006] As a preferred embodiment of the above technical solution, the fixing component includes a pushing block and two plug-in blocks. The ends of the connecting rod and the extension rod are provided with plug-in grooves that match the plug-in blocks. An elastic element is fixedly connected between the plug-in block and the intermediate rod. The plug-in block is sloped at the end of the pushing block, and the middle part of the pushing block is protruding and matches the slope of the plug-in block.

[0007] As a preferred embodiment of the above technical solution, both ends of the push block extend through the intermediate rod to the outside, and the surface of the push block is roughened to rub and fix it to the intermediate rod at the insertion point.

[0008] As a preferred embodiment of the above technical solution, the surface of the intermediate rod is provided with an anti-slip layer, and the intermediate rod uses the provided anti-slip layer to rub and fix the folded connecting rod and extension rod.

[0009] The beneficial effects of this utility model are as follows: 1. The head structure of the power wrench features a combination of a U-shaped front end and an L-shaped rear end, which precisely fits both sides of the high-voltage disconnect switch handwheel. It can form a high-fitting snap-fit ​​positioning with the handwheel. At the same time, thanks to the horizontal flipping head structure design, the head direction can be switched without changing tools. With the operating logic of "counterclockwise rotation above the handwheel to break and clockwise rotation below the handwheel to close", the operation action is strongly bound to the fitting position of the head. Combined with the handle structure, it is convenient and quick to operate the high-voltage disconnect switch handwheel. 2. The folding and retractable handle structure uses a rotating and plugging design between the middle rod, connecting rod, and extension rod. This design extends the length of the rotating lever arm while allowing the handle to be folded and stored. The anti-slip layer ensures that the tool fits snugly against the connecting rod when not in use, significantly reducing storage space and improving portability. The fixing components inside the middle rod utilize the sloped engagement of the push block and the plug-in block, along with the reset effect of the elastic element and the friction fixing design of the rough surface of the push block. Simply pushing the push block will push out the plug-in block through the slope, thus achieving a stable lock of the connecting rod and extension rod. Attached Figure Description

[0010] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment; Figure 2 The diagram shown illustrates the closed operation state of the power-assisted wrench in the embodiment. Figure 3 The diagram shown is a diagram of the breaking operation state of the power-assisted wrench in the embodiment; Figure 4 The diagram shown is a folded state diagram of the power-assisted wrench in the embodiment; Figure 5 The diagram shows the installation location of the fixing component in the embodiment.

[0011] In the diagram: 11. U-shaped front end; 12. L-shaped rear end; 21. Connecting rod; 22. Intermediate rod; 23. Extension rod; 24. Fixing component; 241. Push block; 242. Insertion block; 243. Elastic element. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0013] Example A high-voltage disconnector wrench for electric locomotives includes a head structure and a handle structure. The head structure comprises a U-shaped front end 11 and an L-shaped rear end 12, both of which are fixedly connected to the handle structure. The U-shaped front end 11 and the L-shaped rear end 12 are located on both sides of the handwheel spoke. The wrench can be horizontally rotated to change the direction of the head structure. The head structure can be inserted above the handwheel spoke and rotated counterclockwise to complete the disconnection operation, or inserted below the handwheel spoke and rotated clockwise to complete the closing operation. The upper and lower sides of the handle structure are painted with different colors for differentiation. The disconnection or closing operation is determined by observing the color of the handle structure surface. Before operation, the direction of the wrench can be adjusted according to the operation requirements and the color.

[0014] The head structure of the power wrench features a combination of a U-shaped front end 11 and an L-shaped rear end 12, which precisely fits both sides of the high-voltage disconnect switch handwheel. It can form a highly fitting snap-fit ​​positioning with the handwheel. At the same time, thanks to the horizontal flipping head structure design, the head direction can be switched without changing tools. With the operating logic of "counterclockwise rotation above the handwheel to break and clockwise rotation below the handwheel to close," the operation action is strongly bound to the fitting position of the head. Combined with the handle structure, it allows for convenient and quick operation of the high-voltage disconnect switch handwheel.

[0015] The handle structure includes a middle rod 22, a connecting rod 21, and an extension rod 23. The two ends of the middle rod 22 are rotatably inserted into the connecting rod 21 and the extension rod 23, respectively. The extension rod 23 is folded and fitted to the connecting rod 21 through the middle rod 22. A fixing component 24 for fixing the connecting rod 21 and the extension rod 23 is provided inside the middle rod 22.

[0016] The surface of the intermediate rod 22 is provided with an anti-slip layer, and the intermediate rod 22 uses the anti-slip layer to rub and fix the folded connecting rod 21 and extension rod 23.

[0017] The fixing component 24 includes a push block 241 and two plug-in blocks 242. The ends of the connecting rod 21 and the extension rod 23 are provided with plug-in grooves that match the plug-in blocks 242. An elastic element 243 is fixedly connected between the plug-in blocks 242 and the intermediate rod 22. The plug-in blocks 242 are sloped at the end of the push block 241, and the middle part of the push block 241 is protruding and matches the slope of the plug-in blocks 242.

[0018] Both ends of the push block 241 extend through the intermediate rod 22 to the outside. The surface of the push block 241 is roughened to rub and fix it at the insertion point of the intermediate rod 22.

[0019] The folding and retractable handle structure, through the rotating and plugging design of the intermediate rod 22 with the connecting rod 21 and the extension rod 23, extends the length of the rotation lever arm while allowing the handle to be folded and stored. The anti-slip layer allows the tool to fit snugly against the connecting rod 21 when not in use, greatly reducing the storage space occupied and improving portability. The fixing component 24 inside the intermediate rod 22 utilizes the slope cooperation between the push block 241 and the plug-in block 242 and the reset action of the elastic element 243, combined with the friction fixing design of the rough surface of the push block 241. Simply pushing the push block 241 will push out the plug-in block 242 through the slope to complete the stable locking of the connecting rod 21 and the extension rod 23. This ensures that the handle has sufficient length to provide assistance during operation, and the dual structure of "temporary friction fixing with anti-slip layer + stable locking with fixing component 24" makes the tool more portable.

[0020] Working principle: In the head structure, during use, its U-shaped front end 11 and L-shaped rear end 12 will respectively fit against both sides of the banner of the high-voltage disconnect switch handwheel, forming a stable locking position; when performing the disconnection operation, insert the head into the upper area of ​​the handwheel banner, and with the help of the U-shaped and L-shaped locking limit on the banner, rotate the handle counterclockwise. The force of the head on the banner will drive the handwheel to rotate, thereby completing the disconnection action; to perform the closing operation, simply flip the power wrench horizontally to change the orientation of the head structure, insert the head into the lower area of ​​the handwheel banner, and then rotate the handle clockwise. Relying on the locking transmission between the head and the banner, the handwheel can be driven to complete the closing action. When the folding and retractable handle structure is in operation, in the non-use state, the middle rod 22 can be rotated to fold the extension rod 23 so that it fits tightly against the connecting rod 21. At this time, the anti-slip layer on the surface of the middle rod 22 will use friction to temporarily fix the folded connecting rod 21 and extension rod 23, achieving neat storage. When the handle is needed to provide assistance, the connecting rod 21 and extension rod 23 are unfolded, and the push block 241 on the outside of the middle rod 22 is pushed. The protruding part in the middle of the push block 241 will contact the slope of the insertion block 242. As the push block 241 moves, the slope is subjected to... The force causes the two plug blocks 242 to pop outward and insert into the corresponding plug slots of the connecting rod 21 and the extension rod 23, thus fixing the length of the handle. At the same time, the rough surface of the push block 241 will generate friction at the plug-in point of the middle rod 22, preventing the push block 241 from moving on its own. If you want to fold the handle again, push the push block 241 in the opposite direction. The plug block 242 will retract into the middle rod 22 under the reset pull of the elastic element 243, disengaging from the plug holes of the connecting rod 21 and the extension rod 23. At this time, rotating the middle rod 22 will fold the extension rod 23 back to fit with the connecting rod 21.

[0021] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An auxiliary wrench for a high-voltage disconnecting switch on an electric locomotive, characterized in that, include: The head structure and handle structure include a U-shaped front end (11) and an L-shaped rear end (12). The U-shaped front end (11) and the L-shaped rear end (12) are fixedly connected to the handle structure. The U-shaped front end (11) and the L-shaped rear end (12) are located on both sides of the handwheel spoke. The power wrench is horizontally flipped to change the direction of the head structure. The head structure is inserted above the handwheel spoke and rotated counterclockwise to complete the breaking operation. The head structure is inserted below the handwheel spoke and rotated clockwise to complete the closing operation.

2. The power-assisted wrench for a high-voltage disconnector switch of an electric locomotive according to claim 1, characterized in that, The handle structure includes a middle rod (22), a connecting rod (21), and an extension rod (23). The two ends of the middle rod (22) are rotatably inserted into the connecting rod (21) and the extension rod (23), respectively. The extension rod (23) is folded through the middle rod (22) and fits against the connecting rod (21). The middle rod (22) is provided with a fixing component (24) for fixing the connecting rod (21) and the extension rod (23).

3. The power assist wrench for a high-voltage disconnector switch of an electric locomotive according to claim 2, characterized in that, The fixing component (24) includes a push block (241) and two plug blocks (242). The ends of the connecting rod (21) and the extension rod (23) are provided with plug slots that match the plug blocks (242). An elastic element (243) is fixedly connected between the plug blocks (242) and the intermediate rod (22). The plug blocks (242) are located at the end of the push block (241) and are sloped. The middle part of the push block (241) is protruding and matches the slope of the plug blocks (242).

4. The power-assisted wrench for a high-voltage disconnector switch of an electric locomotive according to claim 3, characterized in that, Both ends of the push block (241) extend outward through the intermediate rod (22), and the surface of the push block (241) is roughened to rub and fix it to the intermediate rod (22) at the insertion point.

5. The power-assisted wrench for a high-voltage disconnector switch of an electric locomotive according to claim 2, characterized in that, The surface of the intermediate rod (22) is provided with an anti-slip layer, and the intermediate rod (22) uses the anti-slip layer to rub and fix the folded connecting rod (21) and extension rod (23).

Images