Portable short-circuit grounding wire special-purpose wire clamp for busbar grounding

Abstract

A portable short-circuit grounding wire special-purpose wire clamp for busbar grounding comprises a column, the cross section of the upper portion of the column is square, the lower portion of the column is in a screw shape, and the small diameter of the lower portion is larger than the diagonal length of the cross section of the upper portion of the column. The upper end of the stand column is provided with a rectangular jack, an upper clamping plate fixedly penetrates through the jack, the upper clamping plate is L-shaped and is perpendicular to the stand column, and the upper clamping plate and the stand column form a clamping groove which is used for being clamped on a busbar; a lower clamping plate sleeves the upper part of the stand column in a sliding clearance fit manner, is parallel to the upper clamping plate and is used for being clamped below the busbar; two wiring screw holes are formed in the other end, corresponding to the clamping groove, of the lower clamping plate; the lower portion of the stand column is connected with a nut steel sleeve through threads, the lower end of the nut steel sleeve is coaxially connected with an insulating rod, and the upper end of the nut steel sleeve abuts against the bottom face of the lower clamping plate and is used for pushing the lower clamping plate to move upwards to clamp the busbar. The busbar grounding device has the advantages of being compact in structure, firm in installation, not prone to falling off and capable of ensuring reliable grounding of the busbar and guaranteeing operation safety.

Description

Portable short-circuit grounding wire clamp for busbar grounding Technical Field

[0001] This utility model relates to a clamp, and more particularly to a portable short-circuit grounding clamp for busbar grounding. Background Technology

[0002] According to the "State Grid Corporation of China Power Safety Work Regulations" (Distribution Section), technical measures to ensure safety when working on distribution lines and equipment include power outages, voltage testing, grounding, hanging warning signs, and installing barriers (fences). When grounding, the grounding wire should be fixed to the conductor using a dedicated clamp, and the installed grounding wire should have good contact and reliable connection. With the construction and operation of numerous substations, distribution booths, and metering rooms, the frequency of portable grounding wires being grounded onto the "busbar" during power outages is increasing.

[0003] Currently, the clamps used for carrying grounding wires in power distribution outage operations typically include hook-type clamps or clamp-type clamps, which are widely used for conductor grounding. However, when these two types of clamps are used for busbar grounding, the contact surface is small, the installation is not secure, and they can fall off at any time. They cannot provide reliable closed grounding protection for the work area, posing a safety risk. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a portable short-circuit grounding wire clamp for busbar grounding that is securely installed, not easy to fall off, can ensure reliable grounding of the busbar, and ensure operational safety.

[0005] The technical solution of this utility model is as follows:

[0006] A portable short-circuit grounding wire clamp for busbar grounding includes a column. The upper part of the column has a square cross-section, and the lower part of the column is screw-shaped with a minor diameter greater than the diagonal length of the upper cross-section. A rectangular insertion hole is provided at the upper end of the column, and an upper clamping plate is fixedly inserted through the insertion hole. The upper clamping plate is L-shaped and arranged perpendicular to the column. The upper clamping plate and the column form a slot for clamping onto the busbar.

[0007] A lower clamping plate is fitted on the upper part of the column through a sliding clearance fit. The lower clamping plate is arranged parallel to the upper clamping plate and is used to clamp the busbar below. Two wiring screw holes are provided on the other end of the corresponding slot on the lower clamping plate for fixing the grounding wire terminal.

[0008] A threaded nut steel sleeve is connected to the lower part of the column. An insulating rod is coaxially connected to the lower end of the threaded nut steel sleeve. The upper end of the threaded nut steel sleeve abuts against the bottom surface of the lower clamping plate, which is used to push the lower clamping plate up and clamp the busbar.

[0009] As a further preferred option, several positioning grooves are evenly distributed on one side of the upper clamping plate, and a set screw is provided at the corresponding insertion hole on the column. The front end of the set screw is inserted into the corresponding positioning groove to fix the upper clamping plate.

[0010] As a further preferred embodiment, a screw hole is provided at the other end of the corresponding slot of the lower clamping plate in the vertical direction, and a support screw is screwed in. The support screw passes through the lower clamping plate and is used to adjust the upper clamping plate to clamp the busbar.

[0011] As a further preferred embodiment, the wire nut steel sleeve is inserted into the insulating rod and fixed by a pin.

[0012] As a further preferred embodiment, the lower clamping plate and the upper clamping plate are formed by die casting of aluminum alloy.

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

[0014] 1. The slot formed between the L-shaped upper clamp and the column facilitates the suspension and clamping of the clamp onto the busbar. The lower part of the column is connected to a threaded nut steel sleeve, with an insulating rod coaxially connected to the lower end of the nut steel sleeve. The upper end of the nut steel sleeve rests against the bottom surface of the lower clamp. By rotating the insulating rod, the nut steel sleeve pushes the lower clamp upwards, thus clamping the busbar between the lower and upper clamps. The structure is compact, the installation is secure, and it is not easy to fall off, ensuring reliable grounding of the busbar and guaranteeing operational safety.

[0015] 2. By providing a rectangular insertion hole at the upper end of the column and fixing an upper clamping plate through the insertion hole, the clamp can adjust the size of the slot formed by the upper clamping plate and the column according to the thickness of the busbar, thereby increasing the contact area between the clamp and the busbar and ensuring reliable grounding. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of this utility model.

[0017] Figure 2 is a right view of Figure 1.

[0018] In the diagram: 1. Insulating rod; 2. Post; 201. Insertion hole; 3. Threaded nut sleeve; 4. Lower clamping plate; 401. Wiring screw hole; 5. Slot; 6. Upper clamping plate; 601. Positioning groove; 7. Top screw; 8. Support screw. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] As shown in Figures 1 and 2, this utility model relates to a portable short-circuit grounding wire clamp for busbar grounding, which includes a column 2. The upper part of the column 2 has a square cross-section, and the lower part of the column 2 is screw-shaped with a thread minor diameter greater than the diagonal length of the upper cross-section of the column 2. A rectangular insertion hole 201 is provided at the upper end of the column 2, and an upper clamping plate 6 is fixedly inserted through the insertion hole. The upper clamping plate 6 is L-shaped and arranged perpendicular to the column 2. The upper clamping plate 6 and the column 2 form a slot 5 for clamping on the busbar.

[0021] A lower clamping plate 4 is fitted on the upper part of the column 2 through a sliding clearance. The lower clamping plate 4 is fitted on the column 2 through a square through hole in its middle and is arranged parallel to the upper clamping plate 6 for clamping under the busbar. Two wiring screw holes 401 are provided side by side on the other end of the corresponding slot on the lower clamping plate 4 for fixing the wiring terminal of the grounding wire.

[0022] A threaded steel sleeve 3 is threadedly connected to the lower part of the column 2. An insulating rod 1 is coaxially connected to the lower end of the threaded steel sleeve 3. The upper end of the threaded steel sleeve 3 abuts against the bottom surface of the lower clamping plate 4, which is used to push the lower clamping plate 4 upward and clamp the busbar. The lower end of the threaded steel sleeve 3 and the upper end of the insulating rod 1 are inserted into each other and fixed by a pin arranged radially.

[0023] Several positioning grooves 601 are evenly distributed on one side of the upper clamping plate 6. A screw hole is provided on the column 2 at the corresponding rectangular insertion hole and a set screw 7 is screwed in. The front end of the set screw 7 is inserted into the corresponding positioning groove so as to fix the upper clamping plate 6.

[0024] A screw hole is provided vertically at the other end of the corresponding slot in the lower clamping plate 4, and a support screw 8 is screwed in. The upper end of the support screw 8 passes through the lower clamping plate 4 and is used to adjust and support the upper clamping plate 6, thereby clamping the busbar. The lower clamping plate 4 and the upper clamping plate 6 are preferably formed by die casting of aluminum alloy.

[0025] In use, the grounding wire terminals are fixed to the two screw holes at the end of the lower clamp 4 with screws beforehand. According to the grounding specifications of the busbar, the width of the slot is matched with the thickness of the busbar by the relative position of the upper clamp 6 and the column 2. After verifying that there is no voltage, the clamp is hung on the busbar through the slot. Finally, the insulating rod 1 is rotated to drive the wire nut steel sleeve 3 to rotate and move upward, pushing the lower clamp 4 to move upward along the column 2 until it is engaged with the upper clamp 6 to clamp the busbar.

[0026] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A portable short-circuit grounding wire clamp for busbar grounding, characterized in that: The device includes a column, the upper part of which has a square cross-section, and the lower part of which is screw-shaped with a minor diameter greater than the diagonal length of the upper cross-section. A rectangular insertion hole is provided at the upper end of the column, through which an upper clamping plate is fixed. The upper clamping plate is L-shaped and arranged perpendicularly to the column, forming a slot for clamping the busbar. A lower clamping plate is fitted onto the upper part of the column via a sliding clearance fit, arranged parallel to the upper clamping plate, for clamping the busbar. Two wiring screw holes are provided at the other end of the slot on the lower clamping plate for fixing the grounding wire terminals. A threaded nut steel sleeve is threaded to the lower part of the column, and an insulating rod is coaxially connected to the lower end of the nut steel sleeve. The upper end of the nut steel sleeve abuts against the bottom surface of the lower clamping plate, pushing the lower clamping plate upwards to clamp the busbar.

2. The portable short-circuit grounding wire clamp for busbar grounding according to claim 1, characterized in that: Several positioning grooves are evenly distributed on one side of the upper clamping plate. A set screw is provided at the corresponding insertion hole on the column. The front end of the set screw is inserted into the corresponding positioning groove to fix the upper clamping plate.

3. The portable short-circuit grounding wire clamp for busbar grounding according to claim 1, characterized in that: A screw hole is provided at the other end of the corresponding slot of the lower clamping plate in the vertical direction, and a support screw is screwed in. The support screw passes through the lower clamping plate and is used to adjust the upper clamping plate to clamp the busbar.

4. The portable short-circuit grounding wire clamp for busbar grounding according to claim 1, characterized in that: The wire nut steel sleeve is inserted into the insulating rod and fixed by a pin.

5. The portable short-circuit grounding wire clamp for busbar grounding according to any one of claims 1-3, characterized in that: The lower and upper clamping plates are formed by die casting of aluminum alloy.

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