CN203632140U - Bolt-type ground protection fixing device - Google Patents

Bolt-type ground protection fixing device Download PDF

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Publication number
CN203632140U
CN203632140U CN201320803838.5U CN201320803838U CN203632140U CN 203632140 U CN203632140 U CN 203632140U CN 201320803838 U CN201320803838 U CN 201320803838U CN 203632140 U CN203632140 U CN 203632140U
Authority
CN
China
Prior art keywords
bolt
type ground
ground protection
protection fixing
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201320803838.5U
Other languages
Chinese (zh)
Inventor
沈慧榕
傅袆
王春军
张可
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Shanghai Electric Power Co Ltd
Original Assignee
State Grid Shanghai Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Shanghai Electric Power Co Ltd filed Critical State Grid Shanghai Electric Power Co Ltd
Priority to CN201320803838.5U priority Critical patent/CN203632140U/en
Application granted granted Critical
Publication of CN203632140U publication Critical patent/CN203632140U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a bolt-type ground protection fixing device comprising a bolt, and a rotating screw nut and a pressing plate sleeving the bolt. The bolt-type ground protection fixing device is connected with a grounding tube integrally rather than detachably so as to be prevented from being stolen externally, has a special purpose, and cannot be used for other purposes. A screw nut rotation fastening mode satisfies operation convenience and greatly improves work efficiency. A ground down conductor has surface contact with the fixing device. Therefore, contact area is greatly increased; contact resistance is decreased; and conduction performance is improved such that a requirement for protecting power line safe operation is achieved.

Description

Screw bolt-type ground protection fixing device
Technical field
The utility model relates to a kind of screw bolt-type ground protection fixing device.
Background technology
Power circuit earthing device connection at present generally adopts U-shaped steel wire clamp fastening means; due to U-shaped steel wire clamp convenient disassembly; material body has very strong versatility; can be used in a lot of occasions; therefore frequently find in daily circuit operation maintenance, be connected and fixed wire clamp and dismantled pilferage by stranger, use for different purpose; cause the no ground protection of power circuit, this can cause following harm:
1. power circuit loses lightning protection: overhead power line is the important component part of electric power system and power network, and because it operates among the Nature, therefore be very easily subject to impact and the infringement of external condition, wherein one of topmost factor is exactly thunderbolt.Especially in wilderness or hills, high mountain, the probability that meets with thunderbolt is larger.Thunderbolt overhead transmission line can cause line switching tripping operation, and circuit element and electric equipment damage, power failure, even the serious accident such as system break-down.Therefore, overhead transmission line lightning protection is an important content of electric power system Thunder Protection.
2. low-voltage circuit unsymmetrical current causes damage to user's electric equipment: owing to there is no the neutral line, the phase voltage of load is asymmetric, the load phase voltage causing is higher, some load phase voltage are on the low side, the load that may make causes the damage of electric equipment because voltage is higher, some loads cause electric equipment cisco unity malfunction because of low voltage.In order to guarantee that low-voltage equipment normally works, must guarantee the neutral line, it is firm that iterative earthing connects, and contact is good.
3. the electric leakage of the electrical equipment fault such as distribution transformer causes unsafe factor to workmen.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of screw bolt-type ground protection fixing device, has strengthened theftproof performance and security performance, easy and simple to handle efficient.
In order to achieve the above object, the utility model provides a kind of screw bolt-type ground protection fixing device, and this device comprises bolt and is set in the rotating nut on bolt, also comprises the pressing plate being set on bolt, and this pressing plate is between bolt base and rotating nut.
On described bolt, open gathering sill.Thereby the utility model with ground pipe integrated connection but not dismounting is connected and avoids easily suffering extraneous pilferage, there is specificity simultaneously, can not use for different purpose.Adopt nut rotation fastening means to meet simple operation, greatly improved operating efficiency.Between down conductor and fixture, be that face contacts, greatly increased contact area, reduced contact resistance, increased conduction property, thereby reach the requirement of protection power circuit safe operation.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3~Fig. 5 is the schematic diagram of construction use procedure of the present utility model.
Embodiment
Following according to Fig. 1~Fig. 5, illustrate preferred embodiment of the present utility model.
As shown in Figure 1, the utility model provides a kind of screw bolt-type ground protection fixing device, and this device comprises bolt 101 and is set in the rotating nut 102 on bolt 101.
Described screw bolt-type ground protection fixing device also comprises the pressing plate 103 being set on bolt 101, and this pressing plate 103 is between bolt base and rotating nut 102.
As shown in Figure 2, on described bolt 101, open gathering sill 104.
As shown in Figure 3, the bolt base of described bolt 101 and the ground connection band iron 22 of ground pipe 21 weld.
After the gathering sill 104 of down conductor 3 inserting bolts 101 is interior (as shown in Figure 4), to the moving rotating nut 102 of bolt base sidespin until pressing plate 103 compresses down conductor 3(as shown in Figure 5).The screw bolt-type ground protection fixing device that the utility model provides, because contact area increases, so contact performance promotes, can discharge the fault currents such as lightning current fast.
Construction process of the present utility model is as follows:
1, by ground connection band iron 22 firm welding of the bolt base of bolt 101 and ground pipe 21.
2, ground pipe 21 is squeezed into stratum and met depth requirements.
3, clip suitable length down conductor 3, in the gathering sill 104 of inserting bolt 101 and down conductor 3 is strained.
4, make the stressed movement of pressing plate 103 to the moving rotating nut 102 of base sidespin of bolt, compress down conductor 3, until completely fastening.
In the present embodiment, bolt 101 adopts M20 bolt, length 30mm.Drive the gathering sill 104 of wide 10mm toward base side from bolt end, the wide 8mm of pressing plate 103, long 25mm.The length 10mm that bolt 101 and ground connection band iron 22 overlap, width 25mm.The internal diameter 20mm of rotating nut 102, nut thickness 10mm.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.Read after foregoing those skilled in the art, for multiple modification of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to 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, on described bolt (101), opens gathering sill (104).
CN201320803838.5U 2013-12-10 2013-12-10 Bolt-type ground protection fixing device Active CN203632140U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320803838.5U CN203632140U (en) 2013-12-10 2013-12-10 Bolt-type ground protection fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320803838.5U CN203632140U (en) 2013-12-10 2013-12-10 Bolt-type ground protection fixing device

Publications (1)

Publication Number Publication Date
CN203632140U true CN203632140U (en) 2014-06-04

Family

ID=50818582

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320803838.5U Active CN203632140U (en) 2013-12-10 2013-12-10 Bolt-type ground protection fixing device

Country Status (1)

Country Link
CN (1) CN203632140U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103633587A (en) * 2013-12-10 2014-03-12 国网上海市电力公司 Bolt-type grounding protection fixing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103633587A (en) * 2013-12-10 2014-03-12 国网上海市电力公司 Bolt-type grounding protection fixing device

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