Grounding bolt for electric power engineering

Abstract

The utility model discloses a grounding bolt for electric power engineering, which comprises a grounding bolt body and a grounding terminal, and the bottom end of the grounding bolt body is provided with a conical part; and the outer wall surface of the upper end of the grounding bolt body sinks to form a mounting concave surface which meets the requirement that the grounding terminal is semi-embedded. The bottom of the whole grounding bolt adopts the conical design, the whole grounding bolt can be conveniently inserted into soil, meanwhile, the mounting concave surface is reserved on the grounding bolt main body, and when the grounding bolt is connected with a grounding terminal, the grounding terminal can be clamped in the mounting concave surface in advance, so that the grounding terminal is prevented from being damaged. At the moment, the position of the grounding terminal can be limited in an auxiliary manner, and the contact area between the grounding bolt body and the grounding terminal can be increased, so that the subsequent grounding effect is improved; in addition, the threaded rod is reserved on the grounding bolt, and when the grounding terminal is installed subsequently, only the grounding terminal needs to be installed on the threaded rod and is fixed by the nut, so that the assembly is simpler, and the overall assembly time can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grounding bolts, in particular to a grounding bolt for electric power engineering. Background Art

[0002] A grounding device is a device that forms an electrical connection between an electrical device or other object and the ground. The grounding device includes a grounding wire connected to the device and a grounding bolt inserted into the soil and connected to the grounding wire.

[0003] At present, grounding bolts are generally cylindrical or similar to angle steel, and a mounting hole is reserved on the grounding bolt to meet the connection with the grounding terminal. The advantage of the cylindrical shape is that it is easy to insert into the soil as a whole, but after the whole is fixed with the grounding terminal, the grounding terminal has a small contact surface with it (that is, the grounding wire needs to be wrapped around the arc surface), which affects the subsequent grounding effect and is prone to loosening after long-term use; while the angle steel has a large force-bearing area with the grounding terminal, and the overall fixing effect is good, but the whole is inconvenient to install in a room, resulting in certain defects in both when used. Utility Model Content

[0004] The purpose of the utility model is to provide a grounding bolt for electric power engineering in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the utility model is as follows: a grounding bolt for power engineering, comprising a grounding bolt body and a grounding terminal, the bottom end of the grounding bolt body having a conical portion; the outer wall surface of the upper end of the grounding bolt body is sunken to form a mounting concave surface that allows the grounding terminal to be semi-embedded, and a mounting component for fixing the grounding terminal is provided at the center of the mounting concave surface.

[0006] In a preferred embodiment, the installation assembly includes a threaded rod and a nut matched with the threaded rod, and the threaded rod is formed integrally with the grounding bolt body as an insert.

[0007] In a preferred embodiment, the grounding terminal is inserted into the threaded rod and fixed by a nut. After the grounding terminal is fixed, the inner end of the grounding terminal is tightly attached to the inner end surface of the mounting concave surface.

[0008] In a preferred embodiment, a spring washer is further sleeved on the threaded rod, and the spring washer is located between the nut and the ground terminal.

[0009] In a preferred embodiment, the upper end of the grounding terminal has a grounding wire connected to the power equipment.

[0010] In a preferred embodiment, a portion of the grounding bolt body above the soil is provided with a plurality of reflective strips around its circumference.

[0011] In a preferred embodiment, the threaded rod and the nut are made entirely of stainless steel, and the grounding bolt body is made of a metal material having conductive properties.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a mounting concave surface is reserved on the grounding bolt body. When the grounding bolt is connected to the grounding terminal, the grounding terminal can be pre-locked in the mounting concave surface. At this time, it can help limit the position of the grounding terminal and increase the contact area between the grounding bolt body and the grounding terminal, thereby improving the subsequent grounding effect;

[0014] 2. In the utility model, the overall body is cylindrical, and a conical part and a concave surface are designed at the upper and lower parts respectively, so that the overall body can be easily inserted into the soil while ensuring the combination effect with the grounding terminal;

[0015] 3. In the utility model, a threaded rod is reserved on the grounding bolt. When the grounding terminal is subsequently installed, it is only necessary to install the grounding terminal on the threaded rod and fix it with a nut. The assembly is simpler and the overall assembly time can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at a in the middle;

[0018] Figure 3 It is a schematic diagram of the local structure when the grounding bolt body and the power terminal are combined in the utility model.

[0019] Markings in the figure: 1-grounding bolt body, 101-conical part, 102-mounting concave surface, 103-threaded rod, 2-spring washer, 3-nut, 4-grounding terminal, 5-reflective strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Reference Figure 1-3A grounding bolt for electric power engineering includes a grounding bolt body 1 and a grounding terminal 4. The bottom end of the grounding bolt body 1 has a conical portion 101. The grounding bolt body 1 is cylindrical and has a conical portion 101 at the bottom, which can facilitate the insertion of the whole into the soil.

[0022] The overall length of the grounding bolt body 1 is 1.8 to 2.5 m.

[0023] Reference Figure 2 and Figure 3 As shown, the outer wall surface of the upper end of the grounding bolt body 1 is sunken to form a mounting recess 102 that allows the grounding terminal 4 to be semi-embedded. The mounting recess 102 is reserved on the grounding bolt body 1. When the grounding bolt body 1 is connected to the grounding terminal 4, the grounding terminal 4 can be pre-stuck in the mounting recess 102. At this time, it can help limit the position of the grounding terminal 102 while increasing the contact area between the grounding bolt body 1 and the grounding terminal 4, thereby improving the subsequent fixing and grounding effects.

[0024] In addition, since a concave surface is used as the limiting part, the overall manufacturing cost can be reduced.

[0025] Reference Figure 2 and Figure 3 As shown, a mounting assembly for fixing the grounding terminal 4 is provided at the center of the mounting recess 102, and the mounting assembly includes a threaded rod 103 and a nut 3 matched with the threaded rod 103. The threaded rod 103 is integrally formed with the grounding bolt body 1 as an insert, and the grounding terminal 4 is inserted on the threaded rod 103 and fixed by the nut 3. After the grounding terminal 4 is fixed, the inner end of the grounding terminal 4 is tightly attached to the inner end surface of the mounting recess 102. The threaded rod 103 is reserved on the grounding bolt body 1. When the grounding terminal 4 is installed later, it only needs to be installed on the threaded rod 103 and fixed with the nut 3. The assembly is simpler and the overall assembly time can be saved.

[0026] The nut 3 and the spring washer 2 can be pre-assembled on the grounding bolt body 1 in the factory, so as to facilitate subsequent assembly operations by operators and avoid the phenomenon of forgetting to bring accessories.

[0027] Furthermore, a spring washer 2 is sleeved on the threaded rod 103 and is located between the nut 3 and the ground terminal 4. The spring washer 2 mainly functions to enhance the fastening degree of the fastener and improve the anti-loosening ability. In addition, the spring washer 2 has elasticity and can also provide a certain buffering and protective effect on the connection part.

[0028] Furthermore, the upper end of the grounding terminal 4 has a grounding wire connected to the power equipment (not shown in the figure, connected to the power engineering equipment that needs to be grounded).

[0029] Furthermore, a plurality of reflective strips 5 are provided around the grounding bolt body 1 above the soil. The reflective strips 5 can reflect surrounding light at night, thereby providing a warning to passers-by and reducing the probability of safety accidents (such as tripping due to inattention).

[0030] Furthermore, the threaded rod 103 and the nut 3 are made of stainless steel as a whole, and the grounding bolt body 1 is made of a metal material with conductive properties. The grounding bolt body 1 can be made of copper-clad steel or other types of materials, which will not be described in detail here.

[0031] The above description is only a preferred embodiment of the present invention and is 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.

Claims

1. A grounding bolt for electric power engineering, comprising a grounding bolt body and a grounding terminal, characterized in that: The bottom end of the grounding bolt body has a conical portion; The outer wall surface of the upper end of the grounding bolt body is sunken to form a mounting concave surface that allows the grounding terminal to be half-embedded, and a mounting component for fixing the grounding terminal is provided at the center of the mounting concave surface.

2. The grounding bolt for electric power engineering according to claim 1, characterized in that: The installation assembly includes a threaded rod and a nut matched with the threaded rod, and the threaded rod is formed integrally with the grounding bolt body as an insert.

3. The grounding bolt for electric power engineering according to claim 2, characterized in that: The grounding terminal is inserted into the threaded rod and fixed by a nut. After the grounding terminal is fixed, the inner end of the grounding terminal is tightly attached to the inner end surface of the mounting concave surface.

4. The grounding bolt for electric power engineering according to claim 2, characterized in that: A spring washer is also sleeved on the threaded rod, and the spring washer is located between the nut and the grounding terminal.

5. The grounding bolt for electric power engineering according to claim 1, characterized in that: The upper end of the grounding terminal is provided with a grounding wire connected to the electric equipment.

6. The grounding bolt for electric power engineering according to claim 1, characterized in that: A plurality of reflective strips are arranged around the part of the grounding bolt body that is higher than the soil.

7. The grounding bolt for electric power engineering according to claim 2, characterized in that: The threaded rod and the nut are made of stainless steel as a whole, and the grounding bolt body is made of a metal material with conductive properties.

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