A grounding clamp

Abstract

The present invention relates to the field of grounding wires, and particularly to a grounding wire clamp, which includes a wire clamp body in a "C" shape. The wire clamp body includes an upper clamping plate, a lower clamping plate, and side fixing plates fixedly connected to the upper clamping plate and the lower clamping plate at both ends. A wiring device for connecting a wire is provided on the side fixing plate. A fastening device threaded to the upper clamping plate is inserted through the upper clamping plate. The bottom of the fastening device is used to tightly press against a grounding head electrically connected to the ground, so that the grounding head is in contact connection with the lower clamping plate. The side fixing plate is fixedly connected with a locking device for restricting the rotation of the fastening device. The present invention realizes preventing the loosening of the connection point between the grounding wire clamp and the grounding head through the wire clamp body, the fastening device, the locking device, and the wiring device, improves the reliability of the connection between the grounding wire clamp and the grounding head, and reduces potential safety hazards.

Description

Technical Field

[0001] The present invention relates to the field of grounding wires, and in particular to a grounding wire clamp. Background Art

[0002] A grounding wire is a safety device used to connect a de-energized electrical equipment to the ground. Its function is to directly transfer the voltage to the ground to reduce the risk of electric shock to the human body. The grounding wire includes a grounding wire clamp at the grounding end and a connecting wire at the electrical equipment end.

[0003] Generally, a grounding head is fixedly installed on the ground. The grounding wire clamp includes a clamp body connected to the connecting wire and a tightening screw threadedly connected to the clamp body. The clamp body is provided with an insertion space for inserting the grounding head, and the tightening screw extends into the insertion space to abut against the grounding head.

[0004] Specifically, insert the grounding head into the insertion space, and then tighten the tightening screw, so that the grounding head can be tightly abutted in the insertion space to prevent the clamp body and the tightening screw from loosening. When the electrical equipment leaks electricity, the generated current flows through the connecting wire, the connection clamp body and the grounding head in sequence and then flows into the ground.

[0005] In order to facilitate the rotation of the tightening screw, a rotating handle is provided at the end of the tightening screw. Rotating the rotating handle can rotate the tightening screw without using tools such as wrenches.

[0006] However, in actual maintenance work, it often happens that the rotating handle is accidentally touched. In the prior art, the tightening screw lacks rotation limit, and touching the rotating handle easily causes the tightening screw to rotate, which in turn causes the grounding head and the clamp body to loosen, and finally loses the grounding function, resulting in equipment failures and casualties.

[0007] Therefore, it is necessary to invent a grounding wire clamp to reduce the loosening of the grounding wire clamp and the grounding head, improve the connection reliability between the grounding wire clamp and the grounding head, and reduce potential safety hazards. Summary of the Invention

[0008] The present invention provides a grounding wire clamp, which can reduce the loosening of the grounding wire clamp and the grounding head, improve the connection reliability between the grounding wire clamp and the grounding head, and reduce potential safety hazards.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A grounding wire clamp includes a clamp body in a "C" shape. The clamp body includes an upper clamping plate, a lower clamping plate, and side fixing plates respectively and fixedly connected to the upper clamping plate and the lower clamping plate at both ends. A wiring device for connecting a wire is provided on the side fixing plate;

[0011] The upper clamping plate is provided with a fastening device threadedly connected to the upper clamping plate, and the bottom of the fastening device is used to tighten a grounding head electrically connected to the earth so that the grounding head is in contact and connected with the lower clamping plate, and the side fixing plate is fixedly connected with a locking device for limiting the rotation of the fastening device.

[0012] Preferably, the fastening device comprises a tightening screw and a rotary handle which are parallel to the side fixing plate, and the rotary handle is fixedly connected to the top of the tightening screw.

[0013] Preferably, the locking device includes a connecting plate parallel to the upper clamping plate, one end of the connecting plate is fixedly connected to the side fixing plate, the connecting plate is provided with a through hole for the tensioning screw to pass through, the through hole is fixedly connected with a threaded hole parallel to the connecting plate, a locking screw is provided in the threaded hole, the bottom of the locking screw abuts against the part of the tensioning screw passing through the through hole from the side to limit the rotation of the tensioning screw.

[0014] Preferably, a clamping block is fixedly connected to the bottom of the tightening screw.

[0015] Preferably, the side fixing plate is provided with an LED lamp and a control switch for controlling the LED lamp switch.

[0016] Preferably, the wiring device is a wiring hole arranged on the side fixing plate.

[0017] Preferably, the tightening screw is made of metal, and the rotary handle is made of insulating material.

[0018] Preferably, the wire clamp body is formed by welding three steel plates.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention prevents the connection point between the grounding wire clamp and the grounding head from loosening through a wire clamp body, a fastening device, a locking device and a wiring device. First, the grounding head is placed between the upper clamping plate and the lower clamping plate, and then the fastening device is rotated to move downward until the bottom of the fastening device is pressed against the grounding head and is in contact with the lower clamping plate, and then the fastening device is restricted from rotating by a locking device fixedly connected to the side fixing plate. When the grounding wire clamp is in a grounding state, the grounding head is tightly connected between the fastening device and the lower clamping plate, and the wire connected to the wiring device conducts current to the grounding head through the grounding wire clamp. During maintenance, even if the fastening device is accidentally touched, the fastening device is restricted from rotating by the locking device, and thus the fastening device is fixed on the upper clamping plate and cannot move relative to the grounding head, thereby maintaining the fastening effect of the fastening device on the grounding head, preventing the connection point between the grounding wire clamp and the grounding head from loosening, improving the reliability of the connection between the grounding wire clamp and the grounding head, and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A cross-sectional view of a grounding clamp provided in an embodiment of the present invention.

[0023] Icon markings: 1-clamp body, 2-upper clamp, 3-lower clamp, 4-side fixing plate, 5-tightening screw, 6-through hole, 7-threaded hole, 8-locking screw, 9-clamp block, 10-LED light, 11-control switch, 12-grounding head, 13-rotary handle, 14-connecting plate, 15-wiring hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is to be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally disposed component. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be a centrally disposed component.

[0026] In addition, terms such as "long", "short", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific direction or operate with a specific direction structure, and should not be understood as a limitation of the present invention.

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Reference Figure 1, a ground wire clamp, comprising a clamp body 1 in a "C" shape. The clamp body 1 includes an upper clamping plate 2, a lower clamping plate 3, and side fixing plates 4 fixedly connected to the upper clamping plate 2 and the lower clamping plate 3 at both ends. A wiring device for connecting a wire is provided on the side fixing plate 4;

[0029] The upper clamping plate is provided with a fastening device threadedly connected to the upper clamping plate. The bottom of the fastening device is used to tightly press an earthing head 12 electrically connected to the ground, so that the earthing head 12 is in contact connection with the lower clamping plate 3. The side fixing plate 4 is fixedly connected with a locking device for restricting the rotation of the fastening device.

[0030] Specifically, the present invention realizes preventing the connection point between the ground wire clamp and the earthing head 12 from loosening through the clamp body, the fastening device, the locking device, and the wiring device. First, place the earthing head 12 between the upper clamping plate 2 and the lower clamping plate 3, and then rotate the fastening device to move it downward until the bottom of the fastening device tightly presses the earthing head 12 to be in contact connection with the lower clamping plate 3. Then use the locking device fixedly connected to the side fixing plate 4 to restrict the rotation of the fastening device. When the ground wire clamp is in the grounded state, the earthing head 12 is tightly connected between the fastening device and the lower clamping plate 3. The wire connected to the wiring device conducts current to the earthing head 12 through the ground wire clamp. During the maintenance process, even if the fastening device is accidentally touched, since the rotation of the fastening device is restricted by the locking device, the fastening device cannot rotate. Therefore, the fastening device is fixed on the upper clamping plate 2 and cannot move relatively, thereby maintaining the fastening effect of the fastening device on the earthing head 12, preventing the connection point between the ground wire clamp and the earthing head 12 from loosening, improving the reliability of the connection between the ground wire clamp and the earthing head 12, and reducing the effect of potential safety hazards.

[0031] It should be noted that the fastening device includes a pressing screw 5 parallel to the side fixing plate 4 and a rotating handle. The rotating handle 13 is fixedly connected to the top of the pressing screw 5;

[0032] The locking device includes a connecting plate 14 parallel to the upper clamping plate 2, one end of the connecting plate 14 is fixedly connected to the side fixing plate 4, the connecting plate 14 is provided with a through hole 6 for the tightening screw 5 to pass through, the through hole 6 is fixedly connected with a threaded hole 7 parallel to the connecting plate 14, the threaded hole 7 is provided with a tightening screw 5, which supports the part of the tightening screw 5 passing through the through hole 6 from the side to limit the rotation of the tightening screw 5. Specifically, first place the grounding head 12 between the upper clamping plate 2 and the lower clamping plate 3, then rotate the handle 13 to move the tightening screw 5 downward until the bottom of the tightening screw 5 presses against the grounding head 12 and contacts and connects with the lower clamping plate 2, and then use a locking device fixedly connected to the side fixing plate 4 to limit the rotation of the tightening screw 5, that is, the tightening screw 5 is connected to the connecting plate 14 by passing through the through hole 6, and then rotate the locking screw 8 arranged inside the connecting plate 14, so that the locking screw 8 supports the part of the tightening screw 5 passing through the through hole 6 from the side to limit the rotation of the tightening screw 5, thereby realizing the locking effect on the tightening screw 5.

[0033] It is worth noting that a clamping block 9 is fixedly connected to the bottom of the tightening screw 5. Specifically, the clamping block 9 can increase the contact area between the tightening screw 5 and the grounding head 12, thereby improving the reliability of the connection between the two.

[0034] Furthermore, the side fixing plate 4 is provided with an LED lamp 10 and a control switch 11 for controlling the switch of the LED lamp 10. Specifically, when performing maintenance at night, turning on the LED lamp 10 facilitates providing a bright field of vision for installing and connecting the grounding clamp and the grounding head.

[0035] Preferably, the wiring device is a wiring hole 15.

[0036] It is worth noting that the tightening screw 5 is made of metal, the rotary handle 13 is made of insulating material; and the wire clamp body 1 is formed by welding three steel plates.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An earthing clamp, comprising a clamp body (1) in a "C" shape, the clamp body (1) including an upper clamping plate (2), a lower clamping plate (3), and side fixing plates (4) fixedly connected to the upper clamping plate (2) and the lower clamping plate (3) at both ends respectively, and a wiring device for connecting a wire is provided on the side fixing plate (4), characterized in that: A fastening device threaded to the upper clamping plate (2) is inserted through the upper clamping plate (2), the bottom of the fastening device is used to tightly press an earthing head (12) electrically connected to the ground, so that the earthing head (12) is in contact connection with the lower clamping plate (3), and a locking device for restricting the rotation of the fastening device is fixedly connected to the side fixing plate (4); The fastening device includes a pressing screw (5) parallel to the side fixing plate (4) and a rotating handle (13), and the rotating handle (13) is fixedly connected to the top of the pressing screw (5); The locking device includes a connecting plate (14) parallel to the upper clamping plate (2), one end of the connecting plate (14) is fixedly connected to the side fixing plate (4), a through hole (6) for the pressing screw (5) to pass through is provided on the connecting plate (14), a threaded hole (7) parallel to the connecting plate (14) is fixedly connected to the through hole (6), a locking screw (8) is provided in the threaded hole (7), and the bottom of the locking screw (8) is used to hold the part of the pressing screw (5) passing through the through hole (6) from the side to restrict the rotation of the pressing screw (5).

2. A grounding clamp according to claim 1, characterized in that: A clamping block (9) is fixedly connected to the bottom of the pressing screw (5).

3. A grounding clamp according to claim 1, characterized in that: An LED lamp (10) and a control switch (11) for controlling the on / off of the LED lamp (10) are provided on the side fixing plate (4).

4. A grounding clamp according to claim 1, characterized in that: The wiring device is a wiring hole (15).

5. The grounding clamp according to claim 1, characterized in that: The pressing screw (5) is made of metal, and the rotating handle (13) is made of insulating material.

6. A grounding clamp according to claim 1, characterized in that: The earthing clamp body (1) is formed by welding three steel plates.

Images