CN203911425U - Pre-twisted hippocampal type shockproof hammer - Google Patents

Abstract

A pre-twisted hippocampus anti-vibration hammer, including pre-twisted wire, wire clamp, suspension wire and hammer body, the suspension wire is fixed in the hole at the lower part of the wire clamp, and there are two hammer bodies, which are respectively fixed at the two ends of the suspension wire. Yes, the cross section of the clamp is hook-shaped, and there is an arc-shaped through hole in the upper part, and the suspension wire and the hammer body are bonded together with adhesive; the advantage is that the suspension wire and the hammer body are bonded together with adhesive , avoiding the explosion of the suspension wire caused by the welding method and the damage of the zinc layer on the surface of the suspension wire, and also eliminating the damage to the root of the hammer body caused by the crimping method, greatly extending the service life of the anti-vibration hammer and ensuring the safety and reliability of the transmission line The cross-section of the clamp is hook-shaped. When installing on the transmission line, you don’t need to hold it with your hands. You can install the clamp directly on the transmission line, which greatly reduces the work intensity of the operator. And the difficulty of installation, the anti-vibration hammer will not deviate from the vertical direction after installation, and no adjustment is required.

Description

Pre-twisted seahorse anti-vibration hammer

technical field

The utility model belongs to an electric power fitting, in particular to a pre-twisted seahorse anti-vibration hammer used on both sides of a power transmission line pole tower.

Background technique

During the operation of overhead transmission lines, various disasters and accidents will occur due to natural conditions, threatening the safe and stable operation of the lines. Galloping of overhead transmission lines is one of the more harmful ones. The galloping of overhead transmission lines is an aerodynamic instability phenomenon, which is a low-frequency, large-amplitude self-excited vibration phenomenon caused by the transmission line conductors under the action of external forces such as wind, and is also the result of continuous energy accumulation due to external excitation. Galloping causes excessive tension changes of transmission wires, which will cause various harms to transmission lines, and has become a relatively prominent problem in the power industry. In order to eliminate the galloping of the transmission line, people install spacers or anti-vibration hammers between the transmission lines, so that the energy of the conductor swing is consumed. Most of the existing anti-vibration hammers in our country are connected by bolts to the transmission wires. Therefore, a special wrench is required during installation. If the operation is improper, the torque will be too small or too large. If the torque is too small, the anti-vibration The grip force between the vibrating hammer and the transmission wire just cannot meet the requirement. Excessive torque will cause damage to the transmission wires or bolts. Moreover, even if the grip force between the anti-vibration hammer and the conductor meets the specified requirements during installation, as the transmission conductor and the anti-vibration hammer vibrate during the operation of the line, the stress between the transmission conductor and the bolt will gradually relax, and the power transmission The grip between the wire and the anti-vibration hammer will also gradually decrease, and the anti-vibration hammer will become loose, causing the anti-vibration hammer to deviate from the initial installation position. This phenomenon often occurs in the line.

In order to solve the above problems, people have developed a pre-twisted wire installation type anti-vibration hammer, as shown in Figure 4, the pre-twisted wire installation type anti-vibration hammer is mainly composed of pre-twisted wires, wire clamps, suspension wires and a hammer body. The cross-section of the cable is Y-shaped, with a V-shaped through hole on the upper part, the pre-twisted wire passes through the V-shaped through hole, and then is wound on the transmission wire, the suspension wire is fixed in the hole at the lower part of the clamp, and the hammer body is fixed on both ends of the suspension wire. end. Although this pre-twisted installation type anti-vibration hammer eliminates the shortcomings of the above-mentioned bolt-fixed anti-vibration hammer, it is inconvenient to install and laborious to operate, because the V-shaped opening on the upper part of the clamp is below the power transmission wire. When installing, use a Hold up the clamp, suspension wire and hammer body with one hand, and wind the pre-twisted wire with the other hand. It is more difficult to install under the condition of working at heights. Moreover, the anti-vibration hammer tends to deviate from the vertical direction after installation, that is to say, the hammer body is often not directly below the power transmission wire, but to one side. Then, the installed anti-vibration hammer has to be adjusted to twist it It is not only time-consuming and labor-intensive to go directly below the transmission wire, but also cause certain damage to the transmission wire. In addition, the suspension wire and the hammer body are usually fixed together by welding or crimping, both of which have certain problems. If the welding method is adopted, since the suspension wire is a steel strand, the suspension wire will explode when it is heated during welding, which will affect its strength. In addition, welding will also cause damage to the zinc layer on the surface of the suspension wire, which is prone to rust during use and reduces the service life of the anti-vibration hammer. If the crimping method is used, a sleeve must be crimped on the suspension wire first, and then the hammer body should be crimped on the sleeve, and the joint of the hammer body crimping the suspension wire is very short, and its length does not exceed 10 mm. , When crimping the suspension wire, its crimping fixed point is close to the bottom of the hammer body, which is easy to cause cracks at the root of the joint. In the process of use, the hammer body may fall off during the running of the wire. Some cracks are hidden inside the hammer body and cannot be seen with the naked eye after crimping, which will cause very serious hidden dangers to the safe operation of the transmission line.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a pre-twisted seahorse anti-vibration hammer with simple assembly, firm connection, convenient installation and no potential safety hazard.

The utility model includes a pre-twisted wire, a wire clip, a suspension wire and a hammer body. The suspension wire is fixed in the hole at the lower part of the wire clip. There are two hammer bodies, which are respectively fixed at the two ends of the suspension wire. It is hook-shaped, with an arc-shaped through hole on its upper part, and the suspension wire and the hammer body are bonded together with adhesive.

The utility model has the advantages of:

1. The suspension wire and the hammer body are bonded together with an adhesive, which avoids problems such as the explosion of the suspension wire caused by the welding method and the damage of the zinc layer on the surface of the suspension wire, and also eliminates the damage to the root of the hammer body caused by the crimping method, avoiding the hammer Cracks appear on the body, which greatly prolongs the service life of the anti-vibration hammer and ensures the safe and reliable operation of the transmission line. Moreover, the assembly is simple, the connection is firm, and the production efficiency is also improved.

2. The cross-section of the clamp is hook-shaped. When installing on the transmission line, you don’t need to hold it with your hands. You can install the clamp directly on the transmission line, which greatly reduces the work intensity of the operator. The difficulty of installation, and after installation, the anti-vibration hammer will not deviate from the vertical direction, and no adjustment is required.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is Fig. 1 and B-B sectional view;

Fig. 4 is a structural schematic diagram of a pre-twisted wire-mounted anti-vibration hammer in the prior art.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, the utility model includes a pre-twisted wire 5, a wire clip 4, a suspension wire 3 and a hammer body 1; The two hammer bodies 1 are fixed in the holes of the suspension wire 3, and the two hammer bodies 1 are fixed on the two ends of the suspension wire 3, and the suspension wire 3 and the hammer body 1 are glued together with an adhesive 2. Connected together, the adhesive 2 is HD-658 special adhesive; the cross section of the wire clip 4 is hook-shaped, its shape resembles a hippocampus, and there is an arc-shaped through hole on the upper part of the wire clip 4, so that the pre-twisted wire 5 can pass through it. Through, the clamp 4 is firmly connected with the transmission line.

Claims (1)

1. A pre-twisted hippocampus anti-vibration hammer, which includes pre-twisted wire, wire clamp, suspension wire and hammer body, the suspension wire is fixed in the hole at the bottom of the wire clamp, and there are two hammer bodies, which are respectively fixed at the two ends of the suspension wire. It is characterized in that the cross section of the wire clamp is hook-shaped, and an arc-shaped through hole is formed on the upper part thereof, and the suspension wire and the hammer body are glued together with an adhesive.