CN210628531U - T-shaped bolt-free grounding wire clamp - Google Patents
T-shaped bolt-free grounding wire clamp Download PDFInfo
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- CN210628531U CN210628531U CN201921844906.6U CN201921844906U CN210628531U CN 210628531 U CN210628531 U CN 210628531U CN 201921844906 U CN201921844906 U CN 201921844906U CN 210628531 U CN210628531 U CN 210628531U
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- overhead protection
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- twisting
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Abstract
The utility model discloses a T type does not have bolt earth clamp, include: the twisting section is connected with a wiring terminal at one end of the twisting section and two holding sections at the other end of the twisting section; the two sections of holding sections are used for being wound on the overhead protection wire along opposite directions respectively, the winding radius of the holding sections is smaller than the outer diameter of the overhead protection wire, and the wiring terminal is used for being connected with a non-electrified contact body. The utility model discloses a T type does not have bolt earth clamp through gripping two sections and winding on overhead protection line along opposite direction respectively, has reduced overhead protection line's static state and dynamic stress, has avoided overhead protection line phenomenon that stress concentration appears, makes overhead protection line can not cause fatigue damage because of the vibration, has effectively avoided the emergence of trouble, has prolonged overhead protection line's life. The T-shaped bolt-free grounding wire clamp can directly connect the overhead protection wire with the non-electrified metal body without installing a jumper wire.
Description
Technical Field
The utility model relates to an urban rail transit contact net, railway contact net field, especially a T type does not have bolt earth clamp.
Background
With the rapid development of the electrified railways in China, the requirements on the connection reliability and the performance of parts of the contact network of the electrified railways are higher and higher. The overhead contact system protection system is a non-electrified metal body which fixedly supports the overhead contact system and is connected with an overhead contact system protection line through a connecting line clamp to form a good electric path. Because the influence of vibration generated by various factors is received in the power supply operation process of the railway contact network, the contact part of the overhead protection line and the connecting line clamp is easy to generate the phenomenon of fatigue and strain damage, thereby influencing the safe operation of the railway and increasing the operation and maintenance cost.
The existing connection form of the non-charged metal body and the overhead protection wire is shown in fig. 1, a jumper wire c is connected with the overhead protection wire a in a pressing mode through a wire clamp b, the jumper wire c is connected with the non-charged metal body through a bolt, and the non-charged contact body is subjected to grounding treatment. Because the wire clamp b is in hard contact with the overhead protection wire a, the stress concentration of the overhead protection wire a is easily caused, and the fatigue damage of the connection part of the overhead protection wire a and the jumper wire c with the wire clamp b is easily caused in the long-term vibration environment of the power supply operation of the railway contact network. In addition, the structure of the wire clamp b is complex, the installation strength is high, the influence of external factors is great during installation, and the maintenance is not convenient.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model aims to provide a T type does not have bolt earth clamp can be connected with overhead protection line flexibly, makes overhead protection line stress concentration can not appear, simple structure is convenient for install simultaneously.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a T-type boltless ground clamp comprising: the twisting section is connected with a wiring terminal at one end of the twisting section and two holding sections at the other end of the twisting section; the two sections of the holding sections are used for being wound on the overhead protection wire along opposite directions respectively, the winding radius of the holding sections is smaller than the outer diameter of the overhead protection wire, and the wiring terminal is used for being connected with a non-electrified contact body.
Furthermore, the twisting section and the holding section are of an integrated structure and comprise two continuous preformed armor rods, the twisting section is formed by twisting the two preformed armor rods together, and the holding section is formed by twisting the two preformed armor rods which are not twisted.
Furthermore, the two sections of preformed armor rods have the same structure, and each section of preformed armor rods comprises a plurality of single-stranded spiral metal wires.
Further, binding post's stiff end suit is in the other end of transposition section, the stiff end crimping is fixed to on the transposition section.
Further, the wiring end of the wiring terminal is provided with a wiring hole, and the wiring terminal and the non-electrified contact body are in threaded connection through the wiring hole.
The utility model discloses a T type does not have bolt earth clamp through gripping two sections and winding on overhead protection line along opposite direction respectively, has reduced overhead protection line's static state and dynamic stress, has avoided overhead protection line phenomenon that stress concentration appears, makes overhead protection line can not cause fatigue damage because of the vibration, has effectively avoided the emergence of trouble, has prolonged overhead protection line's life. The T-shaped bolt-free grounding wire clamp can directly connect the overhead protection wire with the non-electrified metal body without installing a jumper wire. The two sections of holding sections are in contact with the overhead protection wire, so that the heat conduction area of the overhead protection wire is increased, and heat dissipation is facilitated. In addition, this T type does not have bolt earth clamp simple structure is connected through winding and overhead protection line, the installation of being convenient for.
Drawings
FIG. 1 is a schematic diagram of a connecting clamp and an overhead protection line in the background art;
fig. 2 is an installation schematic diagram of an example of the present invention;
FIG. 3 is a left side view of FIG. 2;
in the figure:
a. an overhead protection line; b. wire clamps; c. a jumper wire;
1. a T-shaped bolt-free grounding wire clamp; 11. a twisted section; 12. a holding section; 13. a wiring terminal; 131. a fixed end; 132. a wiring hole;
2. an overhead protection line.
Detailed Description
To clearly illustrate the design concept of the present invention, the following description is made with reference to the examples.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the examples of the present invention, and it is obvious that the described examples are only a part of examples of the present invention, and not all examples. Based on the middle examples of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
In the description of the present embodiment, the terms "inside", "outside", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish similar items and are not to be construed as requiring a particular order or sequence, and it is to be understood that such uses are interchangeable under appropriate circumstances.
As in the examples shown in fig. 2-3, the utility model discloses a T type does not have bolt earth clamp, this T type does not have bolt earth clamp 1 include: the wire twisting device comprises a twisting section 11, a wiring terminal 13 connected to one end of the twisting section 11 and two holding sections 12 connected to the other end of the twisting section 11, wherein the twisting section 11 and the holding sections 12 are of an integrated structure and comprise two continuous preformed wires, the twisting section is formed by twisting the two preformed wires together, the holding sections are two preformed wires which are released from twisting relation, in the embodiment, the two preformed wires have the same structure, and each preformed wire comprises a plurality of single-stranded spiral metal wires; the fixed end 131 of the connecting terminal 13 is a cylindrical sleeve structure, the fixed end 131 is sleeved at the other end of the twisting section 11, and the fixed end 131 is fixed to the twisting section 11 in a compression joint mode.
Two sections 12 of gripping are used for winding respectively on overhead protection line 2 along opposite direction, can prevent the condition that overhead protection line stress concentration from appearing like this, simultaneously, can guarantee again that transposition section 11 and binding post 13 are hung through gripping section 12 uniformly and hold, the winding radius of gripping section 12 is less than overhead protection line 2's external diameter, it can firmly wind on overhead protection line 2 to guarantee to grip section 12, binding post 13 is used for being connected with non-electrified metal body, wherein, non-electrified metal body has done ground connection, binding post 13's wiring end sets up wiring hole 132, binding post 13 and non-electrified contact carry out threaded connection through wiring hole 132, adopt bolt and nut to connect in this embodiment. The twisted section 12 can be bent at will according to the actual situation in the field.
The T-shaped bolt-free grounding wire clamp 1 of the example has the advantages that the two sections of the holding sections 12 are wound on the overhead protection wire 2 along opposite directions respectively, so that static and dynamic stress of the overhead protection wire 2 is reduced, the phenomenon of stress concentration of the overhead protection wire 2 is avoided, the overhead protection wire 2 cannot be subjected to fatigue damage due to vibration, faults are effectively avoided, and the service life of the overhead protection wire 2 is prolonged. Through the T-shaped bolt-free grounding wire clamp 1, the overhead protection wire 2 can be directly connected with the non-electrified metal body without installing a jumper wire. The two sections of holding sections 12 are in contact with the overhead protection wire 13, which is equivalent to increase the heat conduction area of the overhead protection wire 2 and is beneficial to heat dissipation. In addition, this T type does not have bolt earth clamp 1 simple structure is connected with overhead protection line 2 through the winding, the installation of being convenient for.
It is noted that some of the structures may be selected differently than the specific examples given above. These are all made by those skilled in the art based on their basic skills based on understanding the idea of the present invention, and are not illustrated herein.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as the protection scope of the invention.
Claims (5)
1. The utility model provides a T type does not have bolt earth clamp which characterized in that includes: the twisting section is connected with a wiring terminal at one end of the twisting section and two holding sections at the other end of the twisting section; the two sections of the holding sections are used for being wound on the overhead protection wire along opposite directions respectively, the winding radius of the holding sections is smaller than the outer diameter of the overhead protection wire, and the wiring terminal is used for being connected with a non-electrified contact body.
2. The T-shaped boltless grounding clamp of claim 1, characterized in that the twisting section and the holding section are an integral structure and comprise two continuous preformed armor rods, the twisting section is formed by twisting the two preformed armor rods together, and the holding section is formed by untwisting the two preformed armor rods.
3. A T-shaped boltless grounding clamp as in claim 2, characterized in that the two segments of the preformed armor rods are identical in structure, and each segment of the preformed armor rods comprises a plurality of single-stranded helical wires.
4. A T-type boltless ground clip as claimed in claim 1, wherein a fixed end of the terminal is fitted over the other end of the twisted section, the fixed end being press-fitted to the twisted section.
5. A T-shaped boltless grounding clamp as claimed in claim 1 or 4, characterized in that the terminal of the terminal is provided with a wiring hole through which the terminal and the non-live contact are screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921844906.6U CN210628531U (en) | 2019-10-30 | 2019-10-30 | T-shaped bolt-free grounding wire clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921844906.6U CN210628531U (en) | 2019-10-30 | 2019-10-30 | T-shaped bolt-free grounding wire clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210628531U true CN210628531U (en) | 2020-05-26 |
Family
ID=70757804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921844906.6U Active CN210628531U (en) | 2019-10-30 | 2019-10-30 | T-shaped bolt-free grounding wire clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210628531U (en) |
-
2019
- 2019-10-30 CN CN201921844906.6U patent/CN210628531U/en active Active
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