CN213892250U

CN213892250U - Pre-twisted bridge connector clamp for isolating switch

Info

Publication number: CN213892250U
Application number: CN202022722952.8U
Authority: CN
Inventors: 范黎晓; 屈保华
Original assignee: Beijing PLP Conductor Line Products Co Ltd
Current assignee: Beijing PLP Conductor Line Products Co Ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-08-06
Anticipated expiration: 2030-11-23

Abstract

The utility model discloses a preformed helical bridge binding clip for isolator, including the transposition section with be located the wraparound section at transposition section both ends, the wraparound section is used for on the switch lead wire of receiving lead wire clamp plate both ends. The utility model discloses a preformed helical bridge binding clip for isolator, through with the wraparound section wraparound to the switch lead wire at lead wire clamp plate both ends, alleviate the stress concentration of lead wire clamp plate and switch pin junction and equipment fastener department, strengthen its fatigue resistance ability to alleviate the overheated condition that connects the end plate, lead wire clamp plate, and simultaneously, this preformed helical bridge binding clip is parallel mode with the switch lead wire, can share the partial electric current of switch lead wire, reduce the temperature of wraparound section and switch pin junction district section. In addition, the pre-twisted bridge jointing clamp can be fastened on the switch lead without other auxiliary fasteners, can be installed by hands, and does not need other auxiliary installation tools.

Description

Pre-twisted bridge connector clamp for isolating switch

Technical Field

The utility model belongs to the technical field of electronic railway connecting net technique and specifically relates to a preformed helical bridge binding clip for isolator.

Background

In a high-speed rail contact network, an isolating switch is widely used as basic equipment of a power supply system, and the main functions of the isolating switch are as follows: the safety of the high-voltage electrical appliance and the device during maintenance work is ensured, and the voltage isolation function is achieved.

In the operation process of an outdoor high-speed rail contact system, an isolating switch body, a lead terminal, an equipment wire clamp, a supporting insulator and a switch bracket jointly form a contact system isolating switch system, as shown in figure 1, in the operation process, the phenomenon of stress concentration is easily caused at the joint of a lead pressing plate a and a switch lead b, so that the connection fatigue and overheating condition are caused, the equipment wire clamp and the switch lead b can be blown off seriously, and further the railway power failure accident is caused.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model aims at providing a preformed helical bridge binding clip for isolator alleviates the stress concentration phenomenon of lead wire clamp plate and switch pin junction, guarantees the operation reliability of contact net isolator system.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the pre-twisted bridge jointing clamp for the isolating switch comprises a twisted section and wrapping sections positioned at two ends of the twisted section, wherein the wrapping sections are used for being wrapped to switch leads at two ends of a lead pressing plate.

Further, the wire wrapping section is spiral.

Further, the two winding sections are opposite in rotation direction.

Further, a certain distance is reserved between the stranded section and the lead pressing plate.

Further, color mark points are arranged at the bent positions of the twisting section and the winding section.

The utility model discloses a preformed helical bridge binding clip for isolator, through with the wraparound section wraparound to the switch lead wire at lead wire clamp plate both ends, alleviate the stress concentration of lead wire clamp plate and switch pin junction and equipment fastener department, strengthen its fatigue resistance ability to alleviate the overheated condition that connects the end plate, lead wire clamp plate, and simultaneously, this preformed helical bridge binding clip is parallel mode with the switch lead wire, can share the partial electric current of switch lead wire, reduce the temperature of wraparound section and switch pin junction district section. In addition, the pre-twisted bridge jointing clamp can be fastened on the switch lead without other auxiliary fasteners, can be installed by hands, and does not need other auxiliary installation tools.

Drawings

Fig. 1 is a schematic structural diagram of a disconnecting switch used in a high-speed rail catenary in the prior art;

fig. 2 is a schematic structural view of a pre-twisted bridge wire connecting clip for an isolating switch according to an example of the present invention;

fig. 3 is a schematic view of a usage state of a pre-twisted bridge wire clamp for an isolating switch according to an example of the present invention;

in the figure:

1-a twisted section; 2, a winding connection section; 3-lead pressing plate; 4-switch lead; and 5, supporting the insulator.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions of the present invention are described below clearly and completely 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, but not all examples. Based on the examples in 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 examples, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 2-3, the pre-twisted bridge wire clamp for disconnecting switch of the present invention includes a twisted section 1 and a wire wrapping section 2 located at two ends of the twisted section, wherein the wire wrapping section 2 is used for wrapping a switch lead 4 at two ends of a lead pressing plate 3.

The pre-twisted bridge jointing clamp for the isolating switch of the example relieves the stress concentration at the joint of the lead pressing plate 3 and the switch lead 4 and the equipment wire clamp by winding the winding section 2 onto the switch lead 4 at two ends of the lead pressing plate 3, enhances the fatigue resistance of the pre-twisted bridge jointing clamp, relieves the overheating condition of the joint end plate and the lead pressing plate 3, is in parallel connection with the switch lead 4, can share part of current of the switch lead 4, and reduces the temperature of the connection section of the winding section 2 and the switch lead 4. In addition, the pre-twisted bridging clamp can be fastened to the switch lead 4 without other auxiliary fasteners, can be installed by hand, and does not need other auxiliary installation tools.

It should be noted that the switch lead 4 and the lead pressing plate 3 in this example are the same in structure as the switch lead b and the lead pressing plate a in fig. 1. The disconnector in this example also comprises a support insulator 5.

Referring to fig. 2, the wire wrap 2 is helical in this example. Preferably, the two wire wrapping sections 2 are oppositely rotated. Ensuring that the wire wrap 2 securely secures the pre-twisted bridging clip to the switch lead 3.

Referring to fig. 3, a certain distance is left between the twisted section 1 and the lead pressing plate 3. The mutual influence of electric fields generated by the twisted section 1 and the switch lead 4 due to too close distance is prevented, so that the current transmission in the twisted section 1 and the switch lead 4 is influenced.

In the present example, a color mark point is provided at the bend of the twisted section 1 and the wire wrap section 2. Since the mid-lay bridge clip in this example may be made from a length of pre-laid wire, the color code points are provided to facilitate manufacture and installation of the clip in this example.

It should be noted that the pre-twisted wire bridge clamp in this example may be made of a length of pre-twisted wire, which may be bonded by several wires, which may be aluminum alloy wires. The twisting section 1 in this example is located in the middle, and the preformed armor rods are twisted, and may be twisted in one direction or may be twisted in different directions in different sections; the winding sections 2 are untwisted and are helical preformed wires, so that the winding sections 2 at the two ends of the twisting section 1 wind and fix the whole preformed bridge connector clip on the switch lead 4.

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

1. The pre-twisted bridge jointing clamp for the isolating switch is characterized by comprising a twisted section and winding sections positioned at two ends of the twisted section, wherein the winding sections are used for winding and connecting to switch leads at two ends of a lead pressing plate; and color mark points are arranged at the bent positions of the twisting section and the winding section.

2. The pre-twisted bridging clip of claim 1 wherein the wire wrap is helical.

3. The pre-twisted bridging clip of claim 2 wherein the two said wire wrap segments are oppositely handed.

4. A pre-twisted bridging clip for a disconnector according to any one of claims 1-3, in which the twisted section is spaced from the lead pressure plate.