Patent Application
20200350752
The present disclosure relates to a safety protection device for power transmission and distribution lines in the power industry, in particular to a complete set of tension backup device for carbon fiber wire.
According to the relevant patent documents, no complete set of tension backup device for carbon fiber wire with the same structure as the present disclosure has been retrieved. With the rapid development of electric power industry, carbon fiber wire has been applied in many lines in China. In the process of construction, the damage or even breakage of internal mandrel at the end of the carbon fiber wire are easy to occur during the pressed crimping of carbon fiber wires by strain clamps and the setting of the carbon fiber wires, and these damages has no reliable detection means so far. The mandrel breakage in some lines eventually causes the breakage and hanging of the whole wire, leading to line outage and power cut. Since there are more and more lines crossing high-speed railway, highway and important transmission channel sections, and the consequences are unimaginable if the wire breakage and hanging is occurred. Therefore, it is necessary to design a complete set of tension backup device for carbon fiber wire to protect the wire within 50 m from the outlet of strain clamp to ensure that the wires will be continued tighten by the backup tension device when the wire core breakage or the original compression strain clamp failure is occurred within this range, so as to avoid the accident caused by the wire falling, and win precious time for emergency repair, so as to meet the development needs of modern power grid.
The object of the present disclosure is to provide a complete set of tension backup device for carbon fiber wire which can effectively pull the wire, prevent the wire from falling, share the tension of the original strain clamp and improve the service life of the original strain clamp when the core of the carbon fiber wire within 50 m of the outlet of the original strain clamp is broken without changing the original line structures.
In order to achieve the above object, the technical solution of the present disclosure is shown as below:
A complete set of tension backup device for carbon fiber wire, including a backup tension device, a performed armor rod a parallel hanging plate, an adapter base, a wire drawing device, a support damper clamp, U-shaped pulling ring, a triangular hanging plate and a tensioning device. The surface of the carbon fiber wire at installation position of the backup tension device is provided with the performed armor rod. A hanging plate of the backup tension device is connected to the adapter base through the parallel hanging plate and the tensioning device. One end of the wire drawing device is connected to the adapter base through the U-shaped pulling ring, the other end is connected to the tensioning device arranged on the triangular hanging plate. The triangular hanging plate is arranged on a fixed pole tower. The backup tension device is a wedge-shaped backup strain clamp; the performed armor rod is a wear-resistant pre-twisted wire. The support damper clamp is arranged on carbon fiber split wire between an original strain clamp and the backup tension device and arranged at intervals of 3-4 meters. The tensioning device is a turn buckle with a closed-loop buckle at both ends.
The backup tension device includes a housing, an inner wedge and the hanging plate, one end of the inner wedge is arranged in the housing, the other end is provided with a bolt fastening hole; two sides of the housing are symmetrically provided with an trunnion connected to the hanging plate, the hanging plate is arranged on the trunnion and is limited by a cotter pin, and the hanging plate is able to rotate around the trunnion; the housing is made of two identical structures with grooves, the two identical structures with grooves are fastened by bolts, and a wedge-shaped cavity matching the inner wedge is formed in the housing; the inner wedge is made of two symmetrical wedge-shaped bodies, a wire guide groove with a shape fitted with an outer shape of the carbon fiber wire is formed between a joint surface; and an outer surface of the housing is designed as a circular arc surface structure, which effectively prevents stress concentration and tip discharge.
The adapter base includes a base body and a connecting ear plate, the base body is a disc structure, and 3-8 of the connecting ear plates are uniformly arranged on an circumference of the base body in a trumpet structure, wherein the number of the connecting ear plates is based on the number of carbon fiber split wires; the connecting ear plate is provided with a bolt hole connected to the parallel hanging plate.
The wire drawing device includes a steel strand and a steel anchor, and the steel anchor is crimped at both ends of the steel strand.
The support damper clamp includes a hose clamp, a frame plate, a clamp body, a clamp cover plate, a rubber tile, wherein the hose clamp is welded on the frame plate, the clamp body is fixed on the frame plate through bolts, the clamp cover plate is hinged with the clamp body, and is locked on the clamp body through a closed pin shaft; inner surfaces of the clamp body and the clamp cover plate are provided with the rubber tiles.
When in use, the performed armor rod is wrapped at the position within 50 m from the outlet of the original compression type strain clamp of the carbon fiber wire that needs to be backed up, then the backup tension device is installed on the carbon fiber wire wrapped with the performed armor rod, Selecting the appropriate adapter base according to the number of split wires, and the hanging plate on the backup tension device is connected to the connecting ear plate on the adapter base through the tensioning device and the parallel hanging plate. The triangular hanging plate is installed on the pole and tower, selecting the appropriate length of wire drawing device according to the distance between the triangular hanging plate and the adapter base. And the adapter base and the triangular hanging plate are connected each other through the tensioning device. The support damper clamp is installed, and the distance between each support damper clamp is 3-4 m, the hose clamp in the support damper clamp is tightly held on the steel strand of the wire drawing device, adjusting the wire drawing device between the backup tension device and the adapter base to balance the backup tension device on each wire with the adapter base. And finally adjusting the tensioning device between the triangular hanging plate and the wire drawing device, to make the wire drawing device draw the backup tension device connected to the adapter base, so as to backup the tension stress.
The present disclosure has the advantages as follows: Since the wedge-shaped backup tension device is provided, so as to facilitate installation and provides a large gripping force for the carbon fiber wire. The outer surface of the backup tension device is designed to be of an are structure, thereby effectively preventing stress concentration, which has a reliable structure. Because the performed armor rod is a wear-resistant pre-twisted wire, thereby the outer surface of the carbon fiber wire can be effectively protected and is easy to install. Due to the setting of the adopter base, mutiple backup tension devices on split wires can be gathered and one wire drawing device is used, to make the structure simple. By using the support damper clamp, the protection of the outer surface of the carbon fiber wire can be achieved, at the same time, the carbon fiber wire can be reliably stretched out by using the support damper clamps, so that the backup tension device will not collide with the wire, so as to prolong the service life of the wire. By providing of the tensioning device, it can convenient to adjust the tightness and tension. Due to the reasonable structure and convenient use, it has great practical and promotional value.
The present disclosure will be further described as follows in combination with the accompanying drawings:
Referring to
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810625019.3 | Jun 2018 | CN | national |
This application is a continuation of International Patent Application No. PCT/CN2018/109603, filed on Oct. 10, 2018, which claims priority benefit of Chinese Patent Application No. 201810625019.3, filed on Jun. 17, 2018, and the entire contents of which are incorporated herein by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/109603 | 10/10/2018 | WO | 00 |
