CN206099253U - Protection device that falls is prevented to broken string - Google Patents

Abstract

The utility model provides a protection device that falls is prevented to broken string, it includes a plurality of gangs of preformed armor rods that are made by aluminium alloy material, the section of holding with a firm grip the in bank that its both ends are the coiled tubular shape structure sticks together, and evenly be stained with electrically conductive sand on the inner wall of coiled tubular shape structure, the transposition section that is the linearity among them twines burst transposition together, the burr processing of polishing is all done at preformed armor rods's both ends, use, at first lead according to what be suitable for, the quantity that takes shape and confirm required the device is prefabricated to the ground wire specification, it leads to install the sign alignment with the center during installation, the ground wire center of hanging, make the transposition section be on a parallel with suspension clamp, twine the section of holding with a firm grip at both ends in proper order again and leading, on the ground line, it takes one's place to ensure the straining of preformed armor rods both ends, the protection device that falls is prevented to broken string installation in proper order that to install, messenger's section of holding with a firm grip zero clearance can. Its simple installation, uniformity are strong, but long -time running moreover, non -maintaining, energy -efficient has been solved the overhead transmission line broken string and has been fallen the influence and strideed across the difficult problem of thing safe operation.

Description

An anti-drop protection device for broken wires

technical field

The utility model relates to an anti-fall protection device for broken wires.

Background technique

In overhead transmission lines, conductors and ground wires are usually one of the parts that bear the most concentrated loads. Creep of conductors and ground wires, construction crimping strength of strain-resistant clamps cannot meet the requirements, and conductors and ground wires vibrate for a long time Fatigue, etc. lead to frequent breakage of the lead and ground wires, and most of them occur at the parts that are in contact with the hardware. The typical parts are the hanger clamps of the lead and ground wires and the exit of the tension clamp. The dynamics of these areas The bending and static bending stresses are the largest, and the probability of disconnection of the conductor and the ground wire is relatively high. Disconnection of conductors and ground wires will seriously affect the safe operation of the objects being crossed, especially for lines that span important public facilities such as high-speed railways, electrified railways, expressways, and power lines. Line accidents will seriously affect the safe operation of railways, highways and power lines, and even cause major safety accidents. In the past two years, there have been two incidents in Liaoning and Hebei where the conductors of overhead transmission lines broke and fell off, causing the high-speed rail to stop running. This shows the necessity and importance of preventing conductor and ground wire breakage and broken wire fall. Therefore, there is an urgent need in the market for a disconnection and fall protection device to solve the problem that a disconnection and fall of an overhead transmission line affects the safe operation of the object to be crossed, and provide reliable protection for the safe operation of the important crossing of the overhead transmission line.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide an anti-drop protection device for broken wires, so as to solve the problem that the broken wires and dropped overhead transmission lines affect the safe operation of the objects to be crossed.

The technical scheme adopted by the utility model to solve the technical problem is: a broken wire anti-falling protection device, which includes several strands of pre-twisted wire made of aluminum alloy material, and its two ends are formed by gripping sections of spiral tubular structure. The rows are stuck together, and the inner wall of the spiral tubular structure is evenly glued with conductive sand, and the straight strands in the middle are twisted into strands and twisted together. When using the broken line anti-fall protection device provided by the new model, firstly carry out prefabrication and shaping according to the applicable guide and ground wire specifications and determine the required quantity of broken line anti-fall protection devices. When installing, align the center installation mark with the guide, ground wire Hang the center of the ground wire so that the twisted section is parallel to the hanging wire clamp, and then wrap the gripping sections at both ends on the guide wire and the ground wire in turn to ensure that the two ends of the pre-twisted wire are fastened in place. The fall protection devices are installed in sequence so that there is no gap in the gripping section.

The wire breakage protection device provided by the utility model adopts a pre-twisted wire structure to realize the gripping of the guide wire and the ground wire. Distributed to a larger area, avoiding the generation of stress concentration points; the application of pre-twisted wire can weaken the dynamic bending stress caused by breeze vibration, and play a role in damping vibration; it is easy to install, strong in consistency, and free-hand installation does not require installation tools , not only improves the labor efficiency of product installation and construction, but also can run for a long time without maintenance; it is made of aluminum alloy material, which not only meets the mechanical strength requirements of the line for metal fittings, but also has high efficiency and energy saving. It is made of conductor and ground wire The material is the same, which reduces the electric corrosion caused by different metals in the electrical environment and prolongs the service life of the fittings; the two ends of the pre-twisted wire are burr-polished to effectively prevent the generation of corona; it solves the problem of overhead The problem that the broken line of the transmission line affects the safe operation of the object to be crossed can provide reliable protection for the safe operation of the important crossing of the overhead transmission line, and the structure is simple, the cost is low, the economic and social benefits are obvious, the actual use value is high, and it has a very wide range. application prospects.

Description of drawings

Fig. 1 is a structural schematic diagram of a disconnection protection device provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the use state of a wire breakage protection device provided by the embodiment of the present invention;

Fig. 3 is an enlarged view of part C in Fig. 1;

Fig. 4 is the A-A sectional schematic diagram of Fig. 1;

Fig. 5 is the B-B sectional schematic diagram of Fig. 1;

Marks in the figure: 1. Gripping section, 2. Twisting section, 3. Suspension clamp.

detailed description

The utility model will be further described below in conjunction with the embodiments, but the protection scope of the utility model is not limited.

The embodiment of the utility model provides a wire breakage protection device, which includes several strands of pre-twisted wires made of aluminum alloy material, and the gripping sections 1 with spiral tubular structure at both ends are glued together in rows, and the spiral Conductive sand is evenly adhered to the inner wall of the tubular structure, and the straight strands 2 in the middle are twisted into strands and twisted together, and both ends of the pre-twisted wires are burr-polished.

When the disconnection anti-fall protection device provided by the embodiment of the present invention is in use, as shown in Figure 3, firstly, according to the applicable guide and ground wire specifications, prefabrication is carried out and the quantity of the required disconnection anti-fall protection device is determined as When installing, align the central installation mark with the hanging center of the guide and ground wires, make the twisted section 2 parallel to the suspension clamp 3, and then wrap the gripping sections 1 at both ends on the guide and ground wires in order to ensure that the pre-twisted wires The two ends are fastened in place, and the disconnection and fall protection devices to be installed are installed in sequence, so that there is no gap in the gripping section 1.

Claims (1)

1. a kind of broken string fall protection equipment, it is characterised in that：If it includes carried interest preformed armor rods by made by aluminum alloy materials, The section of holding with a firm grip (1) of its two ends helically tubular structure in a row sticks together, and is uniformly stained with the inwall of helical tubular structure and leads Electric sand, linearly stranded section (2) are wound in stock and twist together in the middle of it, and the both ends of preformed armor rods are done at sanding burr Reason.