Multi-functional grounding device with contact finger

Abstract

The utility model provides a kind of multi-functional grounding device of contact finger, belong to electric power auxiliary tool field, it includes handle, the end of handle detachably installs connecting rod, the lateral wall of connecting rod is installed with test line connection terminal and ground wire connection terminal, the end of connecting rod is installed with plum blossom contact finger, plum blossom contact finger is simultaneously and test line connection terminal and ground wire connection terminal electrically connected.The utility model has the beneficial effect that it can be quickly and reliably connected with the static contact in 10kV high-voltage cabinet to realize corresponding grounding operation, and can also be used as a static contact extension line, realizing "one line two uses" to facilitate the wiring operation during the withstand voltage test of 10kV high-voltage cabinet.

Description

Technical Field

[0001] This utility model belongs to the field of power auxiliary tools, specifically relating to a finger-type multi-functional grounding device. Background Technology

[0002] When technicians are working on the 10kV high-voltage switchgear, reliable grounding measures must be taken to ensure the personal safety of on-site personnel and the normal operation of the equipment.

[0003] Currently, common grounding devices mainly consist of three parts: an operating lever, a grounding wire, and a grounding clamp. The grounding clamp is used to connect the grounding wire to the equipment, and its structure is mostly a flat-mouth spiral type. Therefore, in the actual operation of 10kV high-voltage switchgear, due to the sealed design of the 10kV high-voltage switchgear, the operation of the above-mentioned grounding device will face numerous difficulties and inconveniences:

[0004] 1. Since the flat-mouth spiral grounding clamp is only suitable for electrical equipment with exposed copper busbars or cable heads, it is difficult to select the suspension point in the actual operation of 10kV high-voltage switchgear. Moreover, if the grounding wire is to be suspended on the switch, the rear door of the high-voltage switchgear must be opened, which makes the entire grounding operation cumbersome and inefficient.

[0005] 2. Because the flat-mouth spiral grounding clamp has a three-sided open structure, it is difficult to ensure that the non-open side of the grounding clamp is always on the top when it is suspended at the high-voltage cabinet. Especially when the operating rod is long and heavy, it is easy for it to fall off due to unreliable suspension, which poses a great threat to the life safety of the workers.

[0006] At the same time, since common grounding devices often only have grounding functions, they are often limited in use and cannot be used as other functional components to meet diverse needs. Utility Model Content

[0007] The technical problem solved by this utility model is to provide a multi-functional touch-type grounding device that can be quickly and reliably connected to the stationary contact in a 10kV high-voltage switchgear to achieve the corresponding grounding operation; it can also be used as an extended lead wire of the stationary contact to achieve "one line for two purposes" so as to facilitate the wiring operation of the 10kV high-voltage switchgear during withstand voltage tests and other operations.

[0008] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a finger-type multi-functional grounding device, which includes a handle, a connecting rod detachably installed at the end of the handle, a test wire connection terminal and a grounding wire connection terminal installed on the side wall of the connecting rod, and a plum blossom finger installed at the end of the connecting rod, which is electrically connected to both the test wire connection terminal and the grounding wire connection terminal. At this point, on the one hand, because this utility model uses a plum blossom-shaped contact as a clamping structure, it can be reliably suspended at the stationary contact in the handcart compartment when used as a grounding device, and the entire operation only requires pulling out the handcart, avoiding the cumbersome process of opening the rear cabinet door; on the other hand, because this utility model is additionally equipped with a test wire connection terminal and the handle and connecting rod are detachably connected together, this utility model can also be used as a stationary contact lead-out wire. That is, when conducting a withstand voltage test on the entire 10kV section of the substation, the test wire can be first wound around the test wire connection terminal, and then the handle can be operated to install the plum blossom-shaped contact in this utility model at the stationary contact in the handcart compartment. Then, the handle can be rotated to remove the handle, and this utility model can be used as a stationary contact lead-out point. Moreover, compared with the existing technology of directly winding the test wire around the stationary contact in the handcart compartment in front of the cabinet, this utility model can greatly reduce the safety hazards of the entire operation.

[0009] Furthermore, a herringbone folding support frame is rotatably mounted on the lower part of the connecting rod. When performing operations such as withstand voltage tests using this invention, the connecting rod can be supported by the herringbone folding support leg to solve the problem of the rod's own weight, thereby ensuring that the live parts are securely fixed during withstand voltage tests and preventing them from touching the outer shell of the high-voltage cabinet. Also, when disassembling the connecting rod and handle, opening the herringbone folding support leg can prevent the connecting rod and the plum blossom contact finger from rotating.

[0010] Furthermore, the herringbone folding support frame includes a ball joint. The fixed end of the ball joint is fixedly installed on the lower part of the connecting rod, and the movable end of the ball joint is fixedly installed with a rotating shaft. The axis of the rotating shaft can be perpendicular to the length direction of the connecting rod and parallel to the length direction of the connecting rod. Two support legs are rotatably installed on the outside of the rotating shaft, so as to ensure that the two support legs can flexibly rotate into a herringbone shape according to the actual situation to support the connecting rod; and can also rotate into a straight shape in the storage state, and be stored in a state parallel to the connecting rod under the rotation of the ball joint, thereby reducing its volume occupied in the storage state.

[0011] Furthermore, the support legs are telescopic rods, and their length can be flexibly adjusted according to the actual usage scenario.

[0012] Furthermore, a support frame receiving slot is provided at the lower part of the connecting rod, through which the folded A-frame folding support frame can be stored.

[0013] Furthermore, the handle is made of insulating material or has an insulating sleeve on the outside, which provides insulation protection.

[0014] Furthermore, the connecting rod is made of a conductive material, preferably a metal with good conductivity.

[0015] Furthermore, the end of the connecting rod is provided with a threaded connection portion, and the end of the handle is provided with a threaded connector. The threaded connector is threadedly connected to the threaded connection portion, thereby allowing the pebbly finger and the connecting rod to be detachably installed at the end of the handle, facilitating the replacement of the pebbly finger by the operator. Preferably, the threaded connection portion can be a structure with a threaded hole directly formed at the end of the connecting rod, and the threaded connector can be a structure with a welded bolt directly embedded in a hole formed at the end of the handle. Moreover, this bolt is preferably a long bolt to effectively prevent the connecting rod from wobbling during rotation.

[0016] Furthermore, both the test wire connection terminal and the grounding wire connection terminal are welded and fixed to the connecting rod.

[0017] Furthermore, a grounding wire is connected to the grounding connection terminal.

[0018] As can be seen from the above technical solutions, this utility model has the following advantages:

[0019] 1. Because this utility model uses plum blossom-shaped contact fingers as the clamping structure, it can be reliably suspended at the stationary contact of the handcart compartment when used as a grounding device, and the entire operation process only requires pulling out the handcart, avoiding the cumbersome process of opening the rear cabinet door.

[0020] 2. Because this utility model is additionally equipped with a test wire connection terminal and the handle and connecting rod are detachably connected together, this utility model can also be used as a static contact lead wire. That is, when conducting a withstand voltage test on the entire 10kV section of the substation, the test wire can be wound around the test wire connection terminal first, and then the handle can be operated to install the plum blossom contact finger of this utility model on the static contact in the handcart compartment. Then, the handle can be rotated to remove the handle, and this utility model can be used as a static contact lead point. Moreover, compared with the existing technology of directly winding the test wire around the static contact in the handcart compartment in front of the cabinet, this utility model can greatly reduce the safety hazards of the entire operation.

[0021] 3. Because this utility model adds an additional A-shaped folding support frame at the connecting rod, it can support the connecting rod during operations such as pressure testing, thus solving the problem of the rod's heavy weight. This ensures that the live parts are securely fixed during the pressure test, preventing them from touching the high-voltage cabinet's outer shell. Furthermore, when disassembling the connecting rod and handle, opening the A-shaped folding support leg prevents the connecting rod and the perforated contact finger from rotating. Additionally, the length of the entire A-shaped folding support leg can be adjusted by using a telescopic structure, reducing the space occupied after folding and improving the overall adaptability of the device. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0024] In the diagram: 1. Plum blossom contact finger; 2. Threaded connection part; 3. Connecting rod; 4. Handle; 5. Support frame receiving groove; 6. Test line connection terminal; 7. Grounding wire connection terminal; 8. Threaded connector; 9. A-frame folding support frame. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] like Figure 1As shown, this utility model provides a finger-type multifunctional grounding device, which includes a handle 4. The handle 4 is made of insulating material, or it is made of ordinary material with an insulating sleeve on its gripping end. A connecting rod 3 is threadedly connected to the end of the handle 4 away from the gripping end. Specifically, in this embodiment, the detachable installation structure between the connecting rod 3 and the handle 4 can be achieved as follows: a threaded hole is opened at the end of the connecting rod 3 as a threaded connection part 2, and a bolt is welded to the end of the handle 4 as a threaded connector 8. Then, the threaded connector 8 is threadedly connected to the threaded connection part 2, thereby achieving detachable installation between the handle 4 and the connecting rod 3. Furthermore, the connecting rod 3 is made of conductive material, and a test wire connection terminal 6 and a grounding wire connection terminal 7 are welded to the side wall of the connecting rod 3. A stylus finger 1 is installed at the end of the connecting rod 3 away from the handle 4. The stylus finger 1 is electrically connected to both the test wire connection terminal 6 and the grounding wire connection terminal 7 simultaneously under the action of the connecting rod 3.

[0027] When grounding is required using this invention, the handcart can be pushed out of the 10kV high-voltage cabinet, one end of the grounding wire can be installed at the grounding wire connection terminal 7 of this invention, and then the handle 4 can be operated to install the plum blossom contact 1 of this invention at the stationary contact in the handcart compartment to complete the grounding work. Moreover, this invention, which uses the plum blossom contact 1 as the clamping structure, has advantages over the existing flat-mouth spiral grounding clamp, such as convenient operation, stability and reliability, and wide applicability, and also avoids the cumbersome process of opening the back cabinet door.

[0028] In addition to being used as a grounding device, this invention can also be used as a static contact lead-out wire. For example, when conducting a withstand voltage test on a 10kV substation, the test wire can be first wound around the test wire connection terminal 6 of this invention, and then the handle 4 can be operated to install the plum blossom contact finger 1 of this invention at the static contact in the handcart compartment. Afterwards, the handle 4 can be rotated to remove the handle 4, and this invention can then be used as a static contact lead-out point. Moreover, compared with the prior art of directly winding the test wire around the static contact in the handcart compartment in front of the cabinet, this invention can greatly reduce the safety hazards of the entire operation.

[0029] Furthermore, as a preferred embodiment, this embodiment can be improved based on the above structure. Specifically, the present invention can also rotatably install an insulating herringbone folding support frame 9 at the lower part of the connecting rod 3. In this embodiment, the herringbone folding support frame 9 includes a ball joint. The fixed end of the ball joint is fixedly installed at the lower part of the connecting rod 3 by means of a clamp or other structure. The movable end of the ball joint is fixedly installed with a rotating shaft. The axial direction of the rotating shaft can be perpendicular to the length direction of the connecting rod 3 and parallel to the length direction of the connecting rod 3. Two support legs are sleeved on the outside of the rotating shaft, so that the two support legs can rotate relative to the rotating shaft under the action of external force and remain stationary relative to the rotating shaft under the action of friction. Moreover, the two support legs preferably adopt a telescopic rod structure similar to an umbrella handle. When using this invention for operations such as withstand voltage tests, the two support legs can be rotated to a vertical position first. At this time, the axis of the rotating shaft is parallel to the length direction of the connecting rod 3. Then, the two support legs can be flexibly rotated to a V-shape according to the actual situation to support the connecting rod 3, thereby solving the problem of the rod's heavy weight and ensuring that the live parts are securely fixed during the withstand voltage test, thus preventing them from touching the outer shell of the high-voltage cabinet. When disassembling the connecting rod 3 and the handle 4, the V-shaped folding support leg 9 can be opened to prevent the connecting rod 3 and the plum blossom contact finger 1 from rotating.

[0030] Conversely, when finished using, the two support legs can be rotated into a straight line and retracted. Then, under the rotation of the pivot and ball joint, it can be stored parallel to the connecting rod 3. At this time, the pivot is perpendicular to the length of the connecting rod 3, thereby reducing its volume in the stored state. Moreover, to further reduce its volume, this invention can also provide a support frame receiving groove 5 at the lower part of the connecting rod 3, through which the folded A-frame folding support frame 9 can be stored.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A touch-sensitive multi-functional grounding device, comprising a handle (4); characterized in that, The end of the handle (4) is detachably equipped with a connecting rod (3). The side wall of the connecting rod (3) is equipped with a test line connection terminal (6) and a grounding connection terminal (7). The end of the connecting rod (3) is equipped with a plum blossom contact finger (1). The plum blossom contact finger (1) is electrically connected to both the test line connection terminal (6) and the grounding connection terminal (7).

2. The finger-type multifunctional grounding device according to claim 1, characterized in that, A herringbone folding support frame (9) is rotatably mounted on the lower part of the connecting rod (3).

3. The finger-type multifunctional grounding device according to claim 2, characterized in that, The herringbone folding support frame (9) includes a ball joint. The fixed end of the ball joint is fixedly installed on the lower part of the connecting rod (3). The movable end of the ball joint is fixedly installed with a rotating shaft. The axial direction of the rotating shaft can be perpendicular to the length direction of the connecting rod (3) and parallel to the length direction of the connecting rod (3). Two support legs are rotatably installed on the outside of the rotating shaft.

4. The finger-type multifunctional grounding device according to claim 2, characterized in that, The supporting legs are telescopic rods.

5. The finger-type multifunctional grounding device according to claim 2, characterized in that, The lower part of the connecting rod is provided with a support frame receiving groove.

6. The finger-type multi-functional grounding device according to claim 1, characterized in that, The handle (4) is made of insulating material or the outside of the handle (4) is provided with an insulating sleeve.

7. The finger-type multifunctional grounding device according to claim 1, characterized in that, The connecting rod (3) is made of conductive material.

8. The finger-type multifunctional grounding device according to claim 1, characterized in that, The end of the connecting rod (3) is provided with a threaded connection part (2), and the end of the handle (4) is provided with a threaded connector (8), which is threadedly connected to the threaded connection part (2).

9. The finger-type multifunctional grounding device according to claim 1, characterized in that, The test line connection terminal (6) and the grounding wire connection terminal (7) are both welded and fixed on the connecting rod (3).

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