CN103633587A - Bolt-type grounding protection fixing device - Google Patents

Abstract

The invention discloses a bolt type grounding protection fixing device, which comprises a bolt, a rotating nut sheathed on the bolt and a pressing plate. The present invention is integrally connected with the grounding pipe instead of being disassembled so as to avoid being easily stolen from the outside, and meanwhile, it has specificity and cannot be used for other purposes. The nut rotation fastening method is adopted to meet the convenience of operation and greatly improve the working efficiency. There is a surface contact between the grounding downconductor and the fixing device, which greatly increases the contact area, reduces the contact resistance, and increases the conduction performance, so as to meet the requirements of protecting the safe operation of the power line.

Description

Bolt type ground protection fixing device

technical field

The invention relates to a bolt type grounding protection fixing device.

Background technique

At present, U-shaped steel wire clips are generally used to fasten the connection of power line grounding devices. Because the U-shaped steel wire clips are easy to disassemble and the material body has strong versatility, it can be used in many occasions, so it is often found in daily line operation and maintenance. , the connection and fixing clamps are dismantled and stolen by outsiders, and used for other purposes, resulting in no grounding protection for the power lines, which will cause the following hazards:

1. Power lines lose lightning protection: Overhead power lines are an important part of power systems and power grids. Because they run in nature, they are easily affected and damaged by external conditions. One of the most important factors is lightning strike. Especially in the wilderness or hills, high mountains, the probability of being struck by lightning is greater. Lightning strikes on overhead lines can cause serious accidents such as tripping of line switches, damage to line components and electrical equipment, interruption of power supply, and even system collapse. Therefore, lightning protection of overhead lines is an important part of lightning protection work in power systems.

2. The unbalanced current of the low-voltage line causes damage to the user's electrical equipment: because there is no neutral line, the phase voltage of the load is asymmetrical, causing some load phase voltages to be high, and some load phase voltages to be low, which may cause some loads Electrical equipment is damaged due to high voltage, and some loads are unable to work normally due to low voltage. In order to ensure the normal operation of low-voltage equipment, it is necessary to ensure that the neutral line, repeated ground connections are firm and in good contact.

3. The fault and leakage of power equipment such as distribution transformers cause unsafe factors for construction workers. the

Contents of the invention

In order to overcome the shortcomings of the prior art above, the present invention provides a bolt-type grounding protection and fixing device, which enhances the anti-theft performance and safety performance, and is easy and efficient to operate.

In order to achieve the above object, the present invention provides a bolt-type grounding protection and fixing device, which includes a bolt and a rotating nut sleeved on the bolt, and also includes a pressing plate sleeved on the bolt, the pressing plate is located between the bolt base and the rotating nut between.

Guide grooves are provided on the described bolts. The present invention is integrally connected with the grounding pipe instead of being disassembled so as to avoid being easily stolen from the outside, and meanwhile, it has specificity and cannot be used for other purposes. The nut rotation fastening method is adopted to meet the convenience of operation and greatly improve the work efficiency. There is a surface contact between the grounding down conductor and the fixing device, which greatly increases the contact area, reduces the contact resistance, and increases the conduction performance, so as to meet the requirements of protecting the safe operation of the power line.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is a top view of the present invention;

3 to 5 are schematic diagrams of the construction and use process of the present invention.

Detailed ways

A preferred embodiment of the present invention will be specifically described below with reference to FIGS. 1 to 5 .

As shown in FIG. 1 , the present invention provides a bolt-type grounding protection fixing device, which includes a bolt 101 and a rotating nut 102 sleeved on the bolt 101 .

The bolt-type grounding protection and fixing device further includes a pressing plate 103 sheathed on the bolt 101 , and the pressing plate 103 is located between the bolt base and the rotating nut 102 .

As shown in FIG. 2 , the bolt 101 is provided with a guide groove 104 .

As shown in Figure 3, the bolt base of described bolt 101 is welded with the ground flat iron 22 of ground pipe 21.

After the grounding downconductor 3 is inserted into the guide groove 104 of the bolt 101 (as shown in FIG. 4 ), turn the rotating nut 102 toward the side of the bolt base until the pressure plate 103 presses the grounding downconductor 3 (as shown in FIG. 5 ). The bolt-type grounding protection and fixing device provided by the present invention has improved contact performance due to an enlarged contact area, and can quickly release fault currents such as lightning currents.

Construction process of the present invention is as follows:

1. Weld the bolt base of the bolt 101 with the ground flat iron 22 of the ground pipe 21 firmly.

2. Drive the grounding pipe 21 into the formation and meet the depth requirements.

3. Cut the grounding down conductor 3 to an appropriate length, insert it into the guide groove 104 of the bolt 101 and tighten the grounding down conductor 3 .

4. Turn the rotating nut 102 toward the base of the bolt to force the pressure plate 103 to move, and press the grounding down conductor 3 until it is completely tightened.

In this embodiment, the bolt 101 is an M20 bolt with a length of 30mm. A guide groove 104 with a width of 10mm is opened from the bolt end to the base side, and the pressing plate 103 is 8mm wide and 25mm long. The length of the bolt 101 and the ground flat iron 22 overlapped is 10mm, and the width is 25mm. The inner diameter of the rotating nut 102 is 20mm, and the thickness of the nut is 10mm.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. Various modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the above disclosure. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (2)

1. a screw bolt-type ground protection fixing device; it is characterized in that; this device comprises bolt (101) and is set in the rotating nut (102) on bolt (101); also comprise the pressing plate (103) being set on bolt (101), this pressing plate (103) is positioned between bolt base and rotating nut (102).

2. screw bolt-type ground protection fixing device as claimed in claim 1, is characterized in that, opens gathering sill (104) on described bolt (101).

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