Grounding device

Abstract

The invention provides a grounding device, and belongs to the technical field of electrical equipment, the grounding device comprises a jointing clamp and a grounding wire, and the jointing clamp is used for being detachably clamped on a grounding assembly connected with the ground; one end of the grounding wire is connected with the jointing clamp, and the other end is connected with a grounding end of electric equipment; wherein the jointing clamp comprises a C-shaped clamp body, a stud and a clamp head, and the C-shaped clamp body is connected with a grounding wire; the stud is connected with one end of the C-shaped clamp body through a thread structure; the clamping head is arranged at one end of the C-shaped clamping body, teeth are arranged on the clamping head, and the clamping head is matched with the stud to clamp the grounding assembly, so that the grounding assembly is conducted with the grounding wire through the clamping head and the C-shaped clamping body. According to the invention, temporary grounding connection can be facilitated, and the grounding connection is safe and reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical equipment, and more specifically, relates to a grounding device. Background Art

[0002] Earthing refers to the connection of the neutral point of the power system and electrical equipment, the exposed conductive parts of the electrical equipment and the conductive parts outside the equipment to the earth through conductors. It can be divided into working grounding, lightning protection grounding and protective grounding. Working grounding is set up by the operation needs of the power system (such as neutral point grounding), so under normal circumstances, there will be a long-term current flowing through the grounding electrode, but it is only an unbalanced current of several amperes to tens of amperes. When a grounding fault occurs in the system, there will be a working current of thousands of amperes flowing through the grounding electrode, but this current will be cut off by the relay protection device within 0.05~0.1s, and even if it is a backup protection, the action is generally within 1s. Lightning protection grounding is grounding designed to eliminate the impact of overvoltage hazards, such as the grounding of lightning rods, lightning conductors and lightning arresters. Lightning protection grounding will only have current flowing under the action of lightning impulses. The amplitude of the lightning current flowing through the lightning protection grounding electrode can reach tens to hundreds of thousands of amperes, but the duration is very short. Protective grounding is a grounding method used to prevent equipment from being charged due to insulation damage and endangering personal safety, such as metal casings of power equipment, reinforced concrete poles, and metal pole towers. Protective grounding allows current to flow only when the insulation of the equipment is damaged, and its value can vary within a large range. When current flows through the above three grounding electrodes, it will cause the grounding electrode potential to rise, affecting the safety of people and equipment. For this reason, the potential rise of the grounding electrode must be limited, or appropriate safety measures must be taken to ensure the safety of equipment and personnel.

[0003] During the power construction process, temporary grounding is often required, especially when using some movable electrical equipment. Some electrical equipment must be grounded. At present, the main method of temporary grounding is to drive a steel bar into the ground and connect it to the electrical equipment through a grounding wire. However, this method is not reliable, and the steel bar must be plugged in and out every time it is grounded, which is inconvenient to use. Summary of the invention

[0004] The purpose of the present invention is to provide a grounding device to solve the technical problems in the prior art that the temporary grounding method during power construction is unreliable and inconvenient to use.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a grounding device, including a wiring clamp and a grounding wire, the wiring clamp is used to be detachably clamped on a grounding component connected to the earth; one end of the grounding wire is connected to the wiring clamp, and the other end is used to be connected to the grounding terminal of the electrical equipment; wherein the wiring clamp includes a C-shaped clamp body, a stud and a clamp head, the C-shaped clamp body is connected to the grounding wire; the stud is connected to one end of the C-shaped clamp body through a threaded structure; the clamp head is arranged at one end of the C-shaped clamp body, and teeth are arranged on the clamp head, the clamp head and the stud cooperate to clamp the grounding component, so that the grounding component is connected to the grounding wire through the clamp head and the C-shaped clamp body.

[0006] In combination with the above technical solution, in a possible implementation, a pressure plate is provided at one end of the stud facing the clamp, and a knob handle is provided at the other end, and the pressure plate is used to cooperate with the clamp to clamp the grounding component.

[0007] In combination with the above technical solution, in a possible implementation, there are two chucks arranged in parallel and both are rotatably connected to the C-shaped chuck body, and teeth are provided on one end of the two chucks facing the stud.

[0008] In combination with the above technical solution, in a possible implementation, a tension spring is provided between the two clamps, and the tension spring pulls the two clamps closer to each other.

[0009] In combination with the above technical solution, in a possible implementation method, cross teeth are provided on opposite sides of the two chucks, and the cross teeth on the two chucks are arranged in a staggered manner, so that under the traction of the tension spring, the two chucks form an interlocking overlap structure through the cross engagement of the cross teeth.

[0010] In combination with the above technical solution, in a possible implementation, a side of the chuck on which the teeth are provided is also provided with an elastic wire pad.

[0011] In combination with the above technical solution, in a possible implementation method, a receiving groove, a sliding seat and a spring are provided on the chuck, one end of the sliding seat is slidably set in the receiving groove and closes the receiving groove, and the other end is used to install teeth and an elastic steel wire pad. The spring is arranged in the receiving groove to support the sliding seat. A connecting hole is also provided on the sliding seat, which connects the receiving groove and the side where the elastic steel wire pad is located, and the receiving groove is used to accommodate conductive glue.

[0012] In combination with the above technical solution, in a possible implementation, the teeth are detachably connected to the chuck.

[0013] In combination with the above technical solution, in a possible implementation, the C-shaped clamp body, the clamp head and the teeth are all conductive structures.

[0014] In combination with the above technical solution, in a possible implementation, the grounding device further includes a protective sleeve, which is slidably disposed on the grounding wire and is used to cover the wiring clamp.

[0015] The beneficial effect of the grounding device provided by the present invention is that compared with the prior art, when the present invention is used, a steel bar is firmly driven into the ground in advance, or a ground wire is led out from a grounding grid as a grounding component. When temporary grounding is required, the grounding wire is connected to the grounding terminal of the electrical equipment, and then the grounding component is placed between the stud and the clamp of the wiring clamp, and the stud is twisted so that the teeth of the clamp bite into the grounding component to form a reliable connection. The present invention can facilitate temporary grounding connection by cooperating with the grounding wire and the wiring clamp with a C-shaped clamp body, a stud, a clamp and teeth, and the grounding connection is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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.

[0017] Figure 1 A schematic diagram of the structure of a grounding device provided in an embodiment of the present invention; Figure 2 A schematic diagram of a partial structure of a grounding device provided by an embodiment of the present invention in a use state; Figure 3 A schematic cross-sectional structural diagram of the clamping head portion of the grounding device provided in an embodiment of the present invention.

[0018] Among them, the reference numerals in the figures are as follows: 10. Grounding components; 20. Wiring clamp; 21. C-shaped clamp body; 22, stud; 221, pressure plate; 222, knob handle; 23, chuck; 231, teeth; 232, cross teeth; 233, wire pad; 234, receiving groove; 235, sliding seat; 236, spring; 24. Extension spring; 30. Ground wire. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0020] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0021] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0022] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0025] The grounding device provided by the present invention is now described.

[0026] like Figure 1 and Figure 2 As shown, a first embodiment of the present invention provides a grounding device, including a wiring clamp 20 and a grounding wire 30 .

[0027] The connecting clip 20 is used to be detachably clamped on the grounding component 10 connected to the ground.

[0028] One end of the grounding wire 30 is connected to the wiring clamp 20 , and the other end is used to connect to the grounding terminal of the electrical equipment.

[0029] The wiring clamp 20 includes a C-shaped clamp body 21 , a stud 22 and a clamp head 23 .

[0030] The C-shaped clamp body 21 is connected to the ground wire 30 .

[0031] The stud 22 is connected to one end of the C-shaped clamp body 21 via a threaded structure.

[0032] The clamp 23 is disposed at one end of the C-shaped clamp body 21 , and teeth 231 are disposed on the clamp 23 .

[0033] The clamp 23 cooperates with the stud 22 to clamp the grounding assembly 10, so that the grounding assembly 10 is connected to the grounding wire 30 through the clamp 23 and the C-shaped clamp body 21, thereby connecting the grounding end of the electrical equipment to the earth to form grounding.

[0034] When in use, a steel bar is firmly driven into the ground in advance, or a ground wire is led out from the grounding grid as a grounding component 10. When temporary grounding is required, the grounding wire 30 is connected to the grounding terminal of the electrical equipment, and then the grounding component 10 is placed between the stud 22 and the clamp 23 of the terminal clamp 20, and the stud 22 is twisted so that the teeth 231 of the clamp 23 bite into the grounding component 10 to form a reliable connection.

[0035] Compared with the prior art, the grounding device provided in this embodiment can facilitate temporary grounding connection through the cooperation of the grounding wire 30 and the wiring clamp 20 with a C-shaped clamp body 21, a stud 22, a clamp head 23 and teeth 231, and the grounding connection is safe and reliable.

[0036] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0037] The shape and number of the teeth 231 can be designed according to requirements, but considering the actual grounding material, the teeth 231 are preferably sharp teeth arranged in an array so as to penetrate into the grounding component 10 to improve the connection firmness and avoid loosening.

[0038] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0039] The stud 22 has a pressure plate 221 at one end facing the clamp 23 and a knob handle 222 at the other end. The pressure plate 221 is used to cooperate with the clamp 23 to clamp the grounding component 10 to increase the contact area with the grounding component 10, making it convenient to use more types of grounding components 10.

[0040] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0041] The two clamps 23 are arranged in parallel and are both rotatably connected to the C-shaped clamp body 21 . The teeth 231 are disposed at one end of the two clamps 23 facing the stud 22 .

[0042] When in use, if the grounding component 10 is a flat iron structure, during the process of tightening the stud 22, the two clamps 23 are parallel to the cross-section of the stud 22 or the pressure plate 221, thereby clamping the grounding component 10; if the grounding component 10 is a steel cable or round copper column structure, during the process of tightening the stud 22, the two clamps 23 and the cross-section of the stud 22 or the pressure plate 221 form a triangular structure to surround and clamp the grounding component 10.

[0043] The invention has a very outstanding effect when clamping the steel cable, and can prevent the steel cable from being scattered and loosened, so that the grounding connection is firm and reliable.

[0044] In order to ensure the orientation of the two clamps 23 , the rotation angle of the two clamps 23 can be limited by a limiting structure.

[0045] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0046] A tension spring 24 is provided between the two clamps 23 , and the tension spring 24 pulls the two clamps 23 toward each other.

[0047] In this way, it can be ensured that the grounding assembly 10 can be directly placed between the clamp 23 and the stud 22 and clamped by twisting the stud 22, avoiding the need to adjust the direction of the clamp 23, making it more convenient to use.

[0048] Extension springs, also called tension springs and stretch springs, are helical springs that bear axial tension. Extension springs are generally made of circular cross-section materials. When not bearing load, the coils of the extension spring are generally tight and there is no gap between them.

[0049] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0050] The two clamps 23 are provided with cross teeth 232 on opposite sides. The cross teeth 232 on the two clamps 23 are arranged in a staggered manner, so that under the traction of the tension spring 24, the two clamps 23 form an interlocking overlap structure through the cross engagement of the cross teeth 232.

[0051] In this way, it is possible to ensure that the two clamps 23 are substantially symmetrical, and when clamping a grounding component 10 such as a steel cable or a round copper column, it is possible to better maintain balance and avoid the grounding component 10 from loosening due to uneven force.

[0052] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0053] An elastic wire pad 233 is also provided on one side of the clamp 23 where the teeth 231 are provided.

[0054] The elastic steel wire pad 233 is a pad-shaped structure formed by kneading elastic corrugated steel wire. On the one hand, it can improve the conductivity without affecting the teeth 231, and can provide a certain elastic force to facilitate the teeth 231 to be removed from the grounding component 10.

[0055] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0056] The clamping head 23 is provided with a receiving groove 234 , a sliding seat 235 and a spring 236 .

[0057] One end of the sliding seat 235 is slidably disposed in the receiving groove 234 to close the receiving groove 234 , and the other end is used to install the teeth 231 and the elastic wire pad 233 .

[0058] The spring 236 is disposed in the receiving groove 234 to support the sliding seat 235 .

[0059] The sliding seat 235 is further provided with a communication hole, and the communication hole communicates with the accommodating groove 234 and the side where the elastic wire pad 233 is located.

[0060] The receiving groove 234 is used to receive the conductive adhesive.

[0061] When in use, the twisting stud 22 causes the sliding seat 235 to be pressurized, and the conductive glue in the receiving groove 234 is squeezed out from the connecting hole onto the elastic steel wire pad 233. On the one hand, it can improve the conductivity and reduce the dripping loss of the conductive glue due to flow. After the stud 22 is loosened, the conductive glue can also be partially sucked back and recycled. On the other hand, the installer can judge the tightening condition of the stud 22 according to the emitting condition of the conductive glue, which is convenient for installation.

[0062] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0063] The clamp 23 is a hinged seat-shaped structure, which is connected to the C-shaped clamp body 21 via a rotating shaft to improve stability and load-bearing capacity.

[0064] Furthermore, the C-shaped clamp body 21 is connected to the clamp head 23 via a turntable structure, that is, both clamp heads 23 are rotatably connected to the turntable structure, and the turntable structure is further connected to the C-shaped clamp body 21. The rotation axis direction of the turntable structure is perpendicular to the rotation axis direction of the clamp head 23, so as to facilitate the adjustment of the angle of the clamp head 23. like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0065] The teeth 231 are detachably connected to the clamp 23 .

[0066] Specifically, the detachable connection may be in the form of plug-in connection, snap-on connection, threaded connection or pin connection, etc. The specific form may be selected according to specific needs.

[0067] This makes it convenient to use a harder and more wear-resistant material for the teeth 231 and facilitates the replacement of the teeth 231 to ensure that the teeth 231 can form effective contact with the grounding assembly 10 .

[0068] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0069] The C-shaped clamp body 21 , the clamp head 23 and the teeth 231 are all conductive structures to facilitate electrical conduction.

[0070] The rotating connection, movable connection, and detachable connection between the C-shaped clamp body 21, the clamp head 23, and the teeth 231 can all be in a conductive form. For the moving parts, graphite or conductive grease can be used to reduce friction resistance.

[0071] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0072] The stud 22 is provided with a locking assembly for locking the stud 22 on the C-shaped clamp body 21 to prevent the stud 22 from loosening and thus preventing it from coming loose.

[0073] like Figures 1 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows.

[0074] The grounding device further comprises a protective cover, which is slidably disposed on the grounding wire 30 and is used to cover the wiring clamp 20 to protect the wiring clamp 20 and prevent the wiring clamp 20 from falling off due to accidental touching by others.

[0075] The protective sleeve can be an elastic rubber sleeve or a hard shell structure, which can be selected according to needs. The protective sleeve is slidably arranged on the grounding wire 30, mainly to avoid affecting the installation of the wiring clamp 20.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0077] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0078] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. A grounding device, characterized in that: The invention comprises a wiring clamp (20) and a grounding wire (30), wherein the wiring clamp (20) is used to be detachably clamped on a grounding component (10) connected to the earth; one end of the grounding wire (30) is connected to the wiring clamp (20), and the other end is used to be connected to a grounding terminal of an electrical device; wherein the wiring clamp (20) comprises a C-shaped clamp body (21), a stud (22) and a clamp head (23); the C-shaped clamp body (21) is connected to the grounding wire (30); the stud (22) is connected to one end of the C-shaped clamp body (21) via a threaded structure; the clamp head (23) is arranged at one end of the C-shaped clamp body (21), and the clamp head (23) is provided with teeth (231); the clamp head (23) cooperates with the stud (22) to clamp the grounding component (10), so that the grounding component (10) is electrically connected to the grounding wire (30) via the clamp head (23) and the C-shaped clamp body (21).

2. The grounding device according to claim 1, characterized in that: A pressing plate (221) is provided at one end of the stud (22) facing the clamp (23), and a knob handle (222) is provided at the other end. The pressing plate (221) is used to cooperate with the clamp (23) to clamp the grounding assembly (10).

3. The grounding device according to claim 1, characterized in that: The clamps (23) are two arranged in parallel and are both rotatably connected to the C-shaped clamp body (21); the teeth (231) are provided at one end of the two clamps (23) facing the stud (22).

4. The grounding device according to claim 3, characterized in that: A tension spring (24) is provided between the two clamps (23), and the tension spring (24) pulls the two clamps (23) toward each other.

5. The grounding device according to claim 4, characterized in that: Cross teeth (232) are provided on opposite sides of the two clamps (23), and the cross teeth (232) on the two clamps (23) are arranged in a staggered manner, so that under the traction of the tension spring (24), the two clamps (23) form an interlocking overlap structure through the cross meshing of the cross teeth (232).

6. The grounding device according to claim 1, characterized in that: An elastic steel wire pad (233) is also provided on one side of the chuck (23) where the teeth (231) are provided.

7. The grounding device according to claim 6, characterized in that: The chuck (23) is provided with a receiving groove (234), a sliding seat (235) and a spring (236); one end of the sliding seat (235) is slidably arranged in the receiving groove (234) and closes the receiving groove (234), and the other end is used to install the teeth (231) and the elastic wire pad (233); the spring (236) is arranged in the receiving groove (234) and is used to support the sliding seat (235); the sliding seat (235) is also provided with a connecting hole, the connecting hole connecting the receiving groove (234) and the side where the elastic wire pad (233) is located; the receiving groove (234) is used to accommodate conductive glue.

8. The grounding device according to claim 1, characterized in that: The teeth (231) are detachably connected to the clamp (23).

9. The grounding device according to claim 1, characterized in that: The C-shaped clamp body (21), the clamp head (23) and the teeth (231) are all conductive structures.

10. The grounding device according to claim 1, characterized in that: The grounding device also includes a protective sleeve, which is slidably arranged on the grounding wire (30) and is used to cover the wiring clamp (20).

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