CN204732786U - A kind of safe and practical earthing tackle - Google Patents
A kind of safe and practical earthing tackle Download PDFInfo
- Publication number
- CN204732786U CN204732786U CN201520427835.5U CN201520427835U CN204732786U CN 204732786 U CN204732786 U CN 204732786U CN 201520427835 U CN201520427835 U CN 201520427835U CN 204732786 U CN204732786 U CN 204732786U
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- CN
- China
- Prior art keywords
- brush
- suspension
- electrographite
- pulley
- wire
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- 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.)
- Expired - Fee Related
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- Elimination Of Static Electricity (AREA)
Abstract
The utility model relates to a kind of safe and practical earthing tackle, include apparatus for suspension (1), pulley (2), pulley spindle (3) and suspension hook (4), it is characterized in that: apparatus for suspension (1) has electrographite brush hole (5), electrographite brush (6) to be arranged in electrographite brush hole (5) and with pulley (2) close contact, electrographite brush (6) utilizes electrical brush pressure spring (7) to compress, one end that wire (8) drawn by brush is fixed on electrographite brush (6), and the other end that wire (8) drawn by brush is fixed on apparatus for suspension (1) together with ground connection link (9).The utility model overall process is without conduction dead angle, and whole conductive path is all less than construction aluminum conductor, has and well enters ground conductance, can accomplish that zero potential is constructed, and avoids and eliminates induced electricity electric shock, scissors crossing, broken string overlap joint burst electric shock accidents.
Description
Technical field
The utility model belongs to lineman's fixture technology field in power engineering, particularly relates to a kind of safe and practical earthing tackle.
Background technology
As everyone knows, unwrapping wire circuit closes on and will produce electrostatic induction and electromagnetic induction if any alive circuit, when occurring if any scissors crossing or broken string overlap joint emergency case, induced electricity or high-tension electricity directly can jeopardize the safety of workmen or construction equipment. and human body sensory can be caused to obtain minimum current value and to be called threshold of perception current, male sex's threshold of perception current is about 1.1mA, women is about 0.7mA, the lowest high-current value that people's physical efficiency independently breaks away from energized conductor is called threshold of let go current, male sex's threshold of let go current is about 16mA, women is about 10.5 mA, ventricular fibrillation threshold is the minimum current value causing ventricular fibrillation, because ventricular fibrillation very easily makes people fatal, so ventricular fibrillation threshold is minimum deadly current value, 50V must be less than for induced voltage workmen, induced current is less than 5mA.At present, earthing tackle used directly on apparatus for suspension, installs earth connection additional, due to bearing set and ball on the pulley spindle of earthing tackle, ball surface uniform scribble lubricating grease, lubricating grease is nonconducting, and the mode with electric spark flows through at this by earth current, conductive resistance is greater than construction aluminum conductor several times, not only resistance is large, and powerful earth current burns instantaneous or bearing of burning, damages coaster.Can not effectively take precautions against and eliminate induced electricity electric shock, scissors crossing, the generation of broken string overlap joint burst electric shock accidents.
Summary of the invention
The purpose of this utility model is the technical problem for above-mentioned existence, provides a kind of safe and practical earthing tackle.Realizing the technical scheme that the purpose of this utility model takes is: a kind of safe and practical earthing tackle, include apparatus for suspension, pulley, pulley spindle and suspension hook, it is characterized in that: apparatus for suspension has electrographite brush hole, electrographite brush to be arranged in electrographite brush hole and with pulley close contact, electrographite brush utilizes electrical brush pressure spring to compress, one end that wire drawn by brush is fixed on electrographite brush, and the other end that wire drawn by brush is fixed on apparatus for suspension together with ground connection link.In order to ensure that ground connection is good, multiple electrographite brush can be set.In addition, described apparatus for suspension is provided with check valve, is convenient to lay wire, and suspension hook is provided with anticreep dead bolt.
The utility model have employed brand-new brush conduction framework, and earth current path is: the earth connection reliable ground that wire-brass ground connection link-brass ground connection link mounts drawn by construction aluminum conductor-high conductivity brass directive wheel-brush.Overall process is without conduction dead angle, and whole conductive path is all less than construction aluminum conductor, has and well enters ground conductance.Can accomplish that zero potential is constructed, avoid and eliminate induced electricity electric shock, scissors crossing, broken string overlap joint burst electric shock accidents.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, apparatus for suspension, 2, pulley, 3, pulley spindle, 4, suspension hook, 5. electrographite brush hole, 6, electrographite brush, 7, electrical brush pressure spring, 8, brush draws wire, 9, ground connection link, 10, check valve, 11, anticreep dead bolt, 12, earth connection.
Embodiment
With reference to accompanying drawing, a kind of safe and practical earthing tackle, include apparatus for suspension 1, pulley 2, pulley spindle 3 and suspension hook 4, it is characterized in that: apparatus for suspension 1 has electrographite brush hole 5, electrographite brush 6 to be arranged in electrographite brush hole 5 and with pulley 2 close contact, electrographite brush 6 utilizes electrical brush pressure spring 7 to compress, and one end that wire 8 drawn by brush is fixed on electrographite brush 6, and the other end that wire 8 drawn by brush is fixed on apparatus for suspension 1 together with ground connection link 9.In order to ensure that ground connection is good, multiple electrographite brush can be set.In addition, described apparatus for suspension 1 is provided with check valve 10, is convenient to lay wire, and suspension hook 4 is provided with anticreep dead bolt 11.Wire 8 drawn by pulley 2 in the utility model, brush and ground connection link 9 all adopts brass material to make.
Operation principle: first by hang structure be suspended on need construction treat on unwrapping wire road, and buckle well anticreep dead bolt 11, prevent ground connection wire dispenser from coming off at work.Ground connection link 9 hangs earth connection 12, earth connection 12 earth terminal reliable ground.Then, the wire needing to install is put into the groove of pulley 2 by check valve 10, pull wire by manpower or plant equipment, ground connection wire dispenser is started working.At this moment, if construction line closes on produce electrostatic induction and electromagnetic induction if any alive circuit, or scissors crossing, when broken string overlap joint emergency case occurs, shock current will pass through brass pulley, metal graphite brush, and wire drawn by brush, brass ground connection link, the earth connection reliable ground that brass ground connection link mounts.Accomplish setting-out work personnel and or plant equipment and the earth zero potential, thus the safety of effectively guarantee plant equipment and the payingoff construction personnel person, avoids the generation of the damage of plant equipment and the human casualty accident of payingoff construction personnel.
Claims (2)
1. a safe and practical earthing tackle, include apparatus for suspension (1), pulley (2), pulley spindle (3) and suspension hook (4), it is characterized in that: apparatus for suspension (1) has electrographite brush hole (5), electrographite brush (6) to be arranged in electrographite brush hole (5) and with pulley (2) close contact, electrographite brush (6) utilizes electrical brush pressure spring (7) to compress, one end that wire (8) drawn by brush is fixed on electrographite brush (6), and the other end that wire (8) drawn by brush is fixed on apparatus for suspension (1) together with ground connection link (9).
2. according to safe and practical earthing tackle according to claim 1, it is characterized in that: described apparatus for suspension (1) is provided with check valve (10), is convenient to lay wire, and suspension hook (4) is provided with anticreep dead bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427835.5U CN204732786U (en) | 2015-06-20 | 2015-06-20 | A kind of safe and practical earthing tackle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427835.5U CN204732786U (en) | 2015-06-20 | 2015-06-20 | A kind of safe and practical earthing tackle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204732786U true CN204732786U (en) | 2015-10-28 |
Family
ID=54391111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520427835.5U Expired - Fee Related CN204732786U (en) | 2015-06-20 | 2015-06-20 | A kind of safe and practical earthing tackle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204732786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173309A (en) * | 2022-09-08 | 2022-10-11 | 江苏恒安电力工具有限公司 | Grounding pulley structure for power line construction |
-
2015
- 2015-06-20 CN CN201520427835.5U patent/CN204732786U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173309A (en) * | 2022-09-08 | 2022-10-11 | 江苏恒安电力工具有限公司 | Grounding pulley structure for power line construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160620 |