CN201266806Y - Tool for fastening 220kv strain clamp bolt - Google Patents

Abstract

A tool for fastening 220kv tension clamp bolts is used to solve the problems of clumsiness and low operating safety factor of existing tools. The technical solution is that it is composed of at least one operating rod, a metal connecting plate, a tightening wrench and a control rope, wherein the operating rod is connected to the tightening wrench at the front end through the metal connecting plate, and the control rope is connected to the upper end of the tightening wrench. The utility model has the advantages of safety, reliability, simplicity, convenient operation, time saving and labor saving. In addition, the tool can also perform live fastening by replacing the operating rod with an insulating operating rod as required, which greatly saves power failure time and has a remarkable effect of technological progress.

Description

A tool for fastening bolts of 220kv tension clamps

technical field

The utility model relates to a high-voltage transmission line construction tool.

Background technique

The 220kv tension clamp is used to fix the wire on the tension insulator string of the non-linear pole tower, which acts as an anchor and acts as a conductor. When the maximum allowable current is passed under the rated voltage for a long time, the temperature rise of the clamp should not be greater than the temperature rise of the installed wire; when it is subjected to electrical load, its current carrying capacity should not be less than that of the installed wire, and the connection should be reliable. The importance of 220kv high-voltage transmission lines as backbone lines is self-evident. In order to ensure the safe operation of the line, the tension clamp bolts should be fully tightened every year to ensure that they are well connected. But in recent years, almost all 220kv line tension towers have been replaced with synthetic insulators. Since the synthetic insulator itself is a synthetic rubber product, it is strictly forbidden to step on it, which brings inconvenience and difficulty to the work of tightening the tension clamp bolts. Therefore, at this stage, the method of binding a hard ladder between the wire and the cross arm is mostly used in the fastening work. This method is very strenuous in the high-altitude operation process, and the hard ladder is easy to drop or slip, and the safety is not high. In addition, due to the large length of 220kv insulator strings and the heavy and heavy ladders that need to be bound, it is impossible for a single person to carry out the work. Therefore, many people are required, labor-intensive, time-consuming, low safety factor, and extremely dangerous.

Contents of the invention

The utility model is used to overcome the deficiencies of the prior art and provide a safe, reliable and easy-to-operate special tool for fastening 220kv tension clamp bolts.

The technical solution adopted to solve the above problems is:

A tool for fastening 220kv tension clamp bolts, which consists of at least one operating rod, a metal connecting plate, a tightening wrench and a control rope, wherein the operating rod is connected to the tightening wrench at the front end through a metal connecting plate, Connect the control rope to the upper end of the tightening wrench.

The above-mentioned tool for fastening the 220kv tension clamp bolts, the front end of the metal connecting plate is equipped with bolts, which are connected with the tightening wrench through the bolts, and the handle of the tightening wrench is provided with holes of equal size and spaced intervals. To change the torque, the maximum torque is 2400KN.

In the above-mentioned tool for fastening bolts of 220kv tension clamps, the two sides of the fastening wrench are respectively provided with spanner openings for fastening bolts of different sizes.

In the above-mentioned tool for fastening the 220kv tension clamp bolts, the top of the operating rod and the bottom of the metal connecting plate are connected through threads.

In the above-mentioned tool for fastening the bolts of 220kv tension clamps, the fastening wrench itself controls the tightening direction of the wrench through a turning card under the wrench socket, thereby avoiding the problem of repeatedly tightening the bolts.

In the above-mentioned tool for fastening bolts of 220kv tension clamps, the top end of the metal connecting plate is designed as an opening and is equipped with connecting bolts.

In the above-mentioned tool for fastening the 220kv tension clamp bolts, the tightening wrench controls the tightening direction of the wrench through a steering card under the wrench socket.

For the tool used for tightening 220kv tension clamp bolts, the torque output of the operating lever is 25.00N-28.00N, preferably 26.89N, and the output torque range is much smaller than the strength of the wrench and the metal connecting rod. Therefore, the strength of the wrench meets the requirements. The operating rod pushes the wrench to rotate at a standard of 15cm to 20cm, and can be operated repeatedly.

When the utility model is used, the operator stands on the cross arm of the pole tower and uses the control rope to put the tool on the bolt to be fastened, and drives the wrench by pushing the operating rod to fasten the tension clamp bolt.

The utility model effectively solves the existing problems of clumsy tools for fastening 220kv tension clamp bolts and low safety factor of operators. The test shows that compared with the prior art, it has the advantages of safety, reliability, simplicity, easy operation, time saving and labor saving. In addition, the tool can also perform live fastening by replacing the operating rod with an insulating operating rod as required, which greatly saves power failure time and has a remarkable effect of technological progress. The new tool is suitable for clamp bolt fastening work of 110kv-220kv high voltage transmission line tension tower.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

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

Fig. 2 is the structural diagram of fastening wrench in Fig. 1;

Fig. 3 is the structural representation of another kind of fastening wrench;

Fig. 4 is a schematic diagram of a metal connecting plate.

Each label in the accompanying drawings is: 1 control rope; 2 operating rod (insulated operating rod); 3 metal connecting plate; 4 tightening wrench.

Detailed ways

As shown in the embodiment shown in Figure 1, the utility model is composed of one to several operating rods 2 connected to the front-end tightening wrench 4 through a metal connecting plate 3, and a control rope 1 is added to the upper end of the tightening wrench 4. The tightening wrench is a wrench with a maximum torque of 2400KN.

The front end of the metal connecting plate 3 is equipped with bolts, which are connected with the fastening wrench 4 through the bolts, and the handle of the wrench 4 has holes with a certain spacing and equal size for changing the torque.

One side of the tightening wrench 4 is used for tightening Φ16 bolts, and the other side is used for tightening Φ18 bolts.

Claims (6)

1, a kind of instrument that is used for fastening 220kv strain clamp bolt, it is characterized in that, it is made up of at least one action bars (2), metal connecting plate (3), spanner (4) and control rope (1), wherein, action bars connects the control rope by the spanner of metal connecting plate connection front end in the upper end of spanner.

2, according to the described instrument that is used for fastening 220kv strain clamp bolt of claim 1, it is characterized in that, the front end of described metal connecting plate (3) is equipped with bolt, is connected the hole that the handle of spanner (4) is provided with equal and opposite in direction, is provided with at interval with spanner (4) by bolt.

According to the described instrument that is used for fastening 220kv strain clamp bolt of claim 2, it is characterized in that 3, the two sides of described spanner (4) is respectively equipped with the wrench opening of the big stove bolt of fastening difference.

According to the described instrument that is used for fastening 220kv strain clamp bolt of claim 3, it is characterized in that 4, the top of described action bars (2) and metal connecting plate (3) bottom are connected both by screw thread.

According to the described instrument that is used for fastening 220kv strain clamp bolt of claim 4, it is characterized in that 5, described metal connecting plate (3) tip designs becomes the opening shape, and connecting bolt is housed.

According to the described instrument that is used for fastening 220kv strain clamp bolt of claim 5, it is characterized in that 6, described spanner (4) is by a fastening direction that turns to card to control spanner of wrench socket below.

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