CN2355436Y

CN2355436Y - Pull-up grounding device

Info

Publication number: CN2355436Y
Application number: CN 98227604
Authority: CN
Inventors: 卢书成
Original assignee: WUXI POWER SUPPLY BUREAU
Current assignee: WUXI POWER SUPPLY BUREAU
Priority date: 1998-08-14
Filing date: 1998-08-14
Publication date: 1999-12-22
Anticipated expiration: 2008-08-14

Abstract

The utility model relates to a power equipment accessory, particularly a safety protector for inspecting power equipment when power is cut off, comprising a grounding frame and a draw rod, wherein, the lower end of the grounding frame is provided with a clamp lead hook; the upper part of the grounding frame is provided with a guide plate provided with a longitudinal hole and a baffle; the hollow draw rod is arranged in the hole; the lower part of the draw rod is provided with a pressing plate and a spring; the middle part of the draw rod is provided with a bayonet; a bayonet pin and a clamp piece of an elastic trip are arranged in the bayonet; a sleeve and a regulation ring are arranged on the external of the draw rod positioned between the baffle and the guide plate; a rubber ring is arranged on the contact surface of the sleeve and the draw rod. The utility model has the advantages of simple structure, convenient operation, safety, etc.

Description

The pull-type earthing device

The utility model relates to the power equipment annex, the used safety guard of maintenance power equipment during specifically a kind of the power failure.

Present employed earthing device is the earthing device that utilizes insulating rod to operate mostly.Insulating rod wherein is used to make operating personnel and electrical current carriers to completely cut off on the one hand, be used as the transmission of power on the other hand, the ground connection operating personnel are by rotating insulated rod, make and then rotation together of coaxial bolts at the insulating rod head, thereby driving pressing plate travels longitudinally, compress or loosen lead, along with improving constantly of power equipment electric pressure, the length of the insulating rod of this insulation bar type earthing device because of safe distance increase extend, brought very big inconvenience for the ground connection operating personnel, even life danger.How long its insulating rod of earthing device of general 220KV just has 3 meters, and the insulating rod of the earthing device of 500KV is unexpectedly above 5 meters, and the insulating rod that makes moist is not only on-insulated, instead become conductor, moist, long insulating rod is easy to touch electrified body on shaft tower, make operating personnel be caused human casualty accident by electric shock.The conductor wire end of insulation bar type earthing device is clamping, is being to utilize the rotation of bolt to realize when loosening lead; so; behind the chuck clamping wire; be easy to unclamp lead because of bolt loosening; make ground connection unreliable, at this moment, in case equipment is sent a telegram here suddenly; earthing device will not have effect, and the line maintenance personnel also will lose ground protection and human casualty accident takes place.

The purpose of this utility model is good, the easy to use pull-type earthing device of a kind of fail safe of design.

Its main technical schemes comprises grounding rack and pull bar, in the lower end of grounding rack the clamp hook is arranged, guide plate and baffle plate with vertical hole are arranged on the top of grounding rack, place the pull bar of hollow in the hole, the clamp hook is pointed in the lower end of pull bar, the bottom sleeve spring of pull bar, there is bayonet socket at position corresponding to guide plate on pull bar, in the pull bar at bayonet socket place, use the hinged fastener of pin, the bayonet lock that can stretch out bayonet socket is arranged at the top of this fastener, the flexure strip of bayonet socket is ejected for making bayonet lock in the bottom, and sleeve pipe is arranged outside the pull bar between guide plate and baffle plate, and rubber ring is set on the contact-making surface of sleeve pipe and pull bar; Rod outer sleeve on sleeve pipe has adjusting ring, and the lower end of pull bar connects pressing plate, and spring housing has a draw-in groove that matches with the clamp hook on pressing plate on the pull bar between pressing plate and the guide plate.

The utility model has the advantages that owing to utilize insulation ropes to substitute original insulating rod, come compressing of pilot end clamp plate and unclamp, operate more convenient by straining, loosen insulation ropes.Secondly, the utility model is clamped the structure of conductor part and is compared with original insulation bar type structure, simple in structure, easy to use and reliable, insulation bar type structure originally has loosening possibility when utilizing bolt to rotate clamping wire, and the utility model utilization compression spring compresses lead, generally, never have as non-artificial dismounting loosening, the bar type ground connection so the reliability of its ground connection is better than insulating.The 3rd, the utility model is without bolt nut structure, thereby the volume lower weight alleviates the operation sequence simplification.Therefore, the utlity model has fail safe preferably, reliability.

Fig. 1 is a structure chart of the present utility model.

The state of Fig. 2 during for this device clamping wire.

Fig. 3 is the state diagram of bayonet lock and guide plate during corresponding to Fig. 1 state.

Fig. 4 is the state diagram of bayonet lock and guide plate during corresponding to Fig. 2 state.

As shown in the figure: the top of grounding rack 1 is the guide plate 6 and baffle plate 2 that through hole is arranged, the bottom is the clamp hook 10 of arc, guide plate, baffle plate and clamp hook are in the same facade, the bottom of pull bar 4 is positioned at the hole of baffle plate 2 and guide plate 6, the affixed pressing plate 9 in the lower end of pull bar, there is a draw-in groove 8 that can embed clamp hook outer end in the outside of this pressing plate 9, the inside of pull bar is cavity 12, corresponding to the position of guide plate 6 bayonet socket 13 is arranged at pull bar 4, in the cavity 12 at bayonet socket position, utilize pin 14 hinged fasteners 19, the bayonet lock 15 that can stretch out bayonet socket is arranged on fastener 19, the flexure strip 16 that can make bayonet lock eject bayonet socket is arranged in the bottom of fastener, on the pull bar between baffle plate and guide plate, be with sleeve pipe 3 and adjusting ring 18, fluted on the contact surface of sleeve pipe 3 and pull bar, place rubber ring 17 in the groove, so as sleeve pipe can with the same moved further of pull bar, adjusting ring 18 is used for the distance that lifts of adjusting yoke.

During use, carry the insulation ropes that ties up to the pull bar top earlier, pull bar is together risen with sleeve pipe, bayonet lock, flat to bayonet lock ejection guide plate, at this moment, the pressing plate of pull bar lower end leaves the clamp hook, as shown in Figure 1.In the time of need clamping lead 11, the clamp hook is hooked lead, carry insulation ropes in the continuation, can not with pull bar rise sleeve pipe owing to adjusting ring bumps to the baffle plate lower surface this moment again, in the pull bar uphill process, bayonet lock is pressed in the sleeve pipe, bounces back in the cavity of pull bar, loosens insulation ropes then, under the effect of spring, sleeve pipe moves down with pull bar, because bayonet lock is crushed in the pull bar cavity, makes bayonet lock be able to smooth hole by guide plate and moves down, pushing down lead tightly to the pressing plate of pull bar lower end ends, make grounding rack and lead conducting, the iron tower conducting of lead and stringing is arranged on grounding rack in addition, thus the purpose that is grounded.When removing grounding rack, only need lift insulation ropes gently, the last plane that makes bayonet lock be stuck in guide plate gets final product.

Claims

1. pull-type earthing device, comprise grounding rack (1) and pull bar (4), in the lower end of grounding rack (1) clamp hook (10) is arranged, it is characterized in that having guide plate (6) and baffle plate (2) with vertical hole on the top of grounding rack (1), place the pull bar (4) of hollow in the hole, clamp hook (10) is pointed in the lower end of pull bar (4), the bottom sleeve spring (7) of pull bar, there is bayonet socket (3) at the position of going up corresponding to guide plate (6) at pull bar (4), in the pull bar at bayonet socket place, use the hinged fastener of pin (14) (19), the bayonet lock (15) that can stretch out bayonet socket is arranged at the top of this fastener (19), the bottom can make bayonet lock (15) eject the flexure strip (16) of bayonet socket (13), sleeve pipe (3) is arranged outside the pull bar between guide plate and baffle plate, on the contact-making surface of sleeve pipe (3) and pull bar (4), rubber ring (17) is set.

2. device according to claim 1 is characterized in that being with adjusting ring (18) outside the pull bar (4) on sleeve pipe (3).

3. device according to claim 1 is characterized in that connecting in the lower end of pull bar pressing plate (9), and spring (7) is enclosed within outside the pull bar (4) between pressing plate (9) and the guide plate (6).

4. according to the described device of claim 1.3, it is characterized in that the draw-in groove (8) that on pressing plate (9), has to match with clamp hook (10).