CN217956151U - Door type bolt-free grounding wire clamp - Google Patents

Abstract

The application relates to a door type does not have bolt earth clamp belongs to railway contact net technical field, include: the twisting body is bent in a door shape to form two twisting end points; the holding piece is bent and connected with a twisting end point; and the connecting terminal is connected to the other twisting end point, wherein the twisting body and the holding piece are integrated into a whole, the twisting body and the holding piece are both formed by preformed armor rods, the holding piece is spirally used for winding and connecting the overhead protection wire, and the connecting terminal is used for connecting a non-electrified contact body. The grip piece on the door-shaped bolt-free grounding wire clamp is in spiral shape and is wound on and connected with the overhead protection wire, so that the grip piece can be in close contact with the overhead protection wire, the stress of the joint between the grip piece and the overhead protection wire is uniform, and the contact point is not prone to stress concentration, thereby reducing the damage of the grounding wire clamp caused by fatigue, greatly ensuring the safe operation of a railway, and reducing the operation and maintenance cost.

Description

Door type bolt-free grounding wire clamp

Technical Field

The application relates to the technical field of railway contact networks, in particular to a door-shaped bolt-free grounding wire clamp.

Background

With the rapid development of the electrified railway, the electrified railway has higher requirements on the connection reliability and performance of contact network parts. In a contact net protection system, a non-charged metal body is connected with an overhead protection line in a contact net through a connecting wire clamp, so that the overhead contact net is fixedly supported to form an electric passage.

Because the overhead protection line is influenced by vibration caused by various factors in the power supply operation process of the railway contact network, stress concentration is easy to occur when the overhead protection line is in contact with the grounding wire clamp, so that the phenomenon of fatigue damage is caused, the safe operation of the railway is influenced, and the operation and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to improve overhead protection line and earth clamp contact and easily take place stress concentration, cause fatigue damage's phenomenon, influence the safe operation of railway, increase operation cost of maintenance, this application provides a door type does not have bolt earth clamp.

The following technical scheme is adopted:

a door-type boltless grounding clip comprising:

the twisting body is bent in a door shape to form two twisting end points;

the holding piece is connected with a twisting end point in a bending way;

the connecting terminal is connected to the other twisted end point;

the twisting body and the holding piece are integrated, the twisting body and the holding piece are both formed by preformed armor rods, the holding piece is spirally used for winding and connecting an overhead protection wire, and the wiring terminal is used for connecting a non-electrified contact body.

By adopting the technical scheme, binding post connects the non-electrified contact, the non-electrified contact carries out ground connection, the transposition body is the door type and connects grip and binding post respectively, the grip on the bolt-free earth clamp of door type is the heliciform and twines the built on stilts protection wire of connection, make and can in close contact with between grip and the built on stilts protection wire, and the junction atress between grip and the built on stilts protection wire is even, the phenomenon of stress concentration is difficult to take place for the contact point, thereby reduce the damage of earth clamp because of fatigue causes, railway's safe operation has greatly been guaranteed, operation cost of maintenance has been reduced.

Preferably, the thread pitch between adjacent threads formed by the preformed thread on the grip is equal.

By adopting the technical scheme, the holding piece and the overhead protection line can be better connected and uniformly stressed due to the equal thread pitches, and stress concentration is not easy to occur.

Preferably, the length of the holding piece is more than or equal to two points and five times of thread pitch.

By adopting the technical scheme, the length of the holding piece is more than or equal to two points and the pitch is the lower standard of the connection between the holding piece and the overhead protection wire, and the connection stability between the holding piece and the overhead protection wire is possibly lower due to the fact that the length of the holding piece is less than two points and the pitch is five times.

Preferably, the connecting terminal comprises a fixing part and a connecting part fixedly connected to the fixing part, the fixing part is connected with one twisting end point of the twisting body, and the connecting terminal is connected with the non-charged contact body through the connecting part.

Through adopting above-mentioned technical scheme, the transposition body is connected to the binding post fixed part, and stiff end fixed connection wiring portion, non-electrified contact are connected to the wiring end, are favorable to the stability of door type no bolt earth clamp structure, drop when preventing that binding post from connecting non-electrified contact.

Preferably, the wiring terminal is provided with a wiring hole, and the wiring hole is fixedly connected with the non-electrified contact body through a bolt.

Through adopting above-mentioned technical scheme, non-electrified contact can pass the wiring hole on the binding post and be connected with binding post better, is difficult to cause the phenomenon that unexpected drops when binding post connects non-electrified contact.

Preferably, the twisted body is connected with the holding piece in a right-angle bending manner.

Through adopting above-mentioned technical scheme, the transposition body is right angle form and buckles and connect the grip, can avoid the barrier that can not remove or can not remove better in the scene, is applicable to more scene.

Preferably, the grip member is angularly flexibly connected to the stranded body.

Through adopting above-mentioned technical scheme, the adjustment of arbitrary angle can be carried out according to on-the-spot actual conditions to the grip, is applicable to more scenes.

Preferably, the preformed armor rods of the stranded body comprise a plurality of monofilaments; and/or the preformed armor rods of the holding piece comprise a plurality of monofilaments.

By adopting the technical scheme, the monofilaments of the preformed armor rods can be better connected, and each monofilament can be contacted with an overhead protection line, so that the stress area is increased.

Preferably, the monofilaments are in a fit winding shape to form the twisted body and the holding piece.

Through adopting above-mentioned technical scheme, laminating winding between the monofilament for be connected with overhead protection line better, prevent to cause the harm easily after the clearance appears between the monofilament.

In summary, the present application includes at least one of the following beneficial technical effects:

1. binding post connects non-electrified contact, non-electrified contact carries out ground connection and handles, the transposition body is the door type and connects grip and binding post respectively, grip on the bolt-free earth clamp of door type is heliciform and winding connection aerial protection line, make and can in close contact with between grip and the aerial protection line, and the junction atress between grip and the aerial protection line is even, the phenomenon of stress concentration is difficult to take place in the contact point, thereby reduce the damage of the earth clamp because of tired causing, railway's safe operation has greatly been guaranteed, operation cost of maintenance has been reduced.

2. The transposition body is connected to binding post fixed part, stiff end fixed connection wiring portion, and non-electrified contact is connected to the wiring end, is favorable to the stability of door type bolt-free earth clamp structure, prevents that binding post from droing when connecting non-electrified contact.

Drawings

FIG. 1 is a schematic diagram of a gate type boltless ground clip according to an embodiment of the present application;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

fig. 3 is a schematic structural view of a grip and a twisted body of a door-type boltless ground clip in an actual scene according to an embodiment of the present application.

Description of reference numerals: 1. twisting the body; 2. a grip; 3. a wiring terminal; 31. a fixed part; 32. a wire connection portion.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses door type does not have bolt earth clamp.

Referring to fig. 1, the door-shaped bolt-free ground clamp comprises a stranded body 1, a holding piece 2 and a connecting terminal 3, wherein the stranded body 1 is bent in a door shape to form two stranded end points, one stranded end point is bent and connected with the holding piece 2, and the other stranded end point is connected with the connecting terminal 3; the stranded body 1 and the holding piece 2 form a whole and are formed by preformed armor rods, the holding piece 2 is spiral and is used for winding and connecting an overhead protection wire, and the wiring terminal 3 is used for connecting a non-electrified contact body.

In the practical application scene, binding post 3 connects the non-electrified contact, the non-electrified contact carries out ground connection and handles, transposition body 1 is the door type and connects grip 2 and binding post 3 respectively, grip 2 on the bolt-free earth clamp of door type is heliciform and winding connection aerial protection line, make can in close contact with between grip 2 and the aerial protection line, and the junction atress between grip 2 and the aerial protection line is even, the phenomenon of stress concentration is difficult to take place for the contact point, thereby reduce the damage of the earth clamp because of tired causing, railway's safe operation has greatly been guaranteed, operation cost of maintenance has been reduced.

Referring to fig. 1 and 3, the twisted body 1 is bent at a right angle to connect with the holding part 2, so that obstacles which cannot move or cannot move well in scenes can be avoided, and the twisted body is suitable for more scenes; the grip 2 is flexibly connected with the twisted body 1 in an angle mode, and the grip 2 can be adjusted at any angle according to actual conditions on site, so that the twist machine is suitable for multiple scenes.

Referring to fig. 1, in a practical application scenario, when an electrified railway is short and there are crossing or excessive bending situations between roads, the situation that the grip piece and the twisted body do not undergo bending processing causes trouble to the layout of an overhead contact system, and in order to minimize the situation, it is necessary to perform flexible bending processing on the connection between the grip piece and the twisted body, and at this time, the non-electrified contact body is not in the extending direction of the overhead protection line.

Referring to fig. 3, in a practical application scenario, when the electrified railway is long, the grip and the twisted body do not need to be bent too much, and the non-charged contact body is in the extending direction of the overhead protection wire.

Referring to fig. 1, the thread pitches between adjacent threads formed by the preformed armor rods on the grip 2 are equal, which may result in better connection between the grip 2 and the overhead protection line, stress concentration is not easy to occur, and the length of the grip 2 is greater than or equal to two-point five-fold thread pitch, which is a lower standard for connection between the grip 2 and the overhead protection line, and the length of the grip 2 less than two-point five-fold thread pitch may greatly result in lower connection stability between the grip 2 and the overhead protection line. In the present embodiment, the length of the grip 2 is equal to four points and five times the pitch.

Referring to fig. 1, the connection terminal 3 includes a fixing portion 31 and a connection portion 32 fixedly connecting the fixing portion 31, the fixing portion 31 connecting one of the twisted ends of the twisted body 1, and the connection portion 32 for connecting a non-electrified contact body through the twisted body 1. Therefore, the stability of the door-shaped bolt-free grounding wire clamp structure is better ensured, and the wiring terminal 3 is prevented from falling off when being connected with a non-electrified contact body. Be provided with the wiring hole on binding post 3, the non-electrified contact of bolt fixed connection is passed through in the wiring hole, and the non-electrified contact can pass the wiring hole on the binding post and be connected with binding post better, is difficult to cause the phenomenon that unexpected drops when binding post connects the non-electrified contact.

Referring to fig. 1 and 2, the pretwisted yarn comprises a plurality of monofilaments, the plurality of monofilaments having equal diameters. The monofilaments of the preformed armor rods have equal diameters, so that the holding piece 2 can be better connected with the overhead protection wire, and each monofilament can be in contact with the overhead protection wire, so that the stress area is increased; be laminating winding form between a plurality of monofilaments for the extension for form transposition body 1 and grip 2, be used for being connected with overhead protective wire better, prevent to cause the harm easily after the clearance appears between the monofilament.

The implementation principle of a door type boltless ground clamp of the embodiment of this application does: binding post 3 connects the non-electrified contact, the non-electrified contact carries out ground connection and handles, transposition body 1 is the door type and connects grip 2 and binding post 3 respectively, grip 2 winding connection overhead guard wire on the bolt-free earth clamp of door type has reduced the stress of the junction between grip 2 and the overhead guard wire, this does benefit to overhead guard wire and the contact of earth clamp and is difficult to take place stress concentration, reduce the damage of earth clamp because of tired causing, railway's safe operation has greatly been guaranteed, operation cost of maintenance has been reduced.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a door type does not have bolt earth clamp which characterized in that includes:

the stranding body (1) is bent in a door shape to form two stranding end points;

the holding piece (2) is connected with one twisting end point in a bending mode;

the connecting terminal (3) is connected to the other twisted terminal;

the twisted body (1) and the holding piece (2) form a whole, the twisted body (1) and the holding piece (2) both comprise preformed armor rods, the holding piece (2) is spirally used for winding and connecting an overhead protection line, and the connecting terminal (3) is used for connecting a non-electrified contact body.

2. Door bolt-less ground clamp according to claim 1, characterized in that the pitch between adjacent threads formed by the preformed threads on the grip (2) is equal.

3. Door bolt-less ground clamp according to claim 2, characterized in that the length of the grip (2) is equal to or greater than two and five times the pitch.

4. Door-type boltless grounding clamp according to claim 1, characterized in that the connection terminal (3) comprises a fixing portion (31) and a connection portion (32) fixedly connected to the fixing portion (31), the fixing portion (31) connecting one of the stranded end points of the stranded body (1), the connection terminal (3) connecting the non-live contact through the connection portion (32).

5. Door bolt-less ground clamp according to claim 1, characterized in that the terminal (3) is provided with a wiring hole which is fixedly connected to the non-live contact by means of a bolt.

6. Door bolt-less ground clamp according to claim 1, characterized in that the twisted body (1) is bent at right angles to the grip (2).

7. Door-type boltless earth clamp according to claim 1, characterized in that the grip (2) is connected angularly flexibly to the stranded body (1).

8. Door bolt-less ground clamp according to claim 1, characterized in that the preformed strand of the stranded body (1) comprises several monofilaments; and/or the preformed filaments of the gripping element (2) comprise a plurality of monofilaments.

9. Door-type boltless grounding clamp according to claim 8, characterized in that several of said monofilaments are wound in a form of a joint to form said stranded body (1) and said grip (2).

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