CN104158118B - A kind of conductors on quad bundled protects line hook - Google Patents

Abstract

The present invention relates to live working tools for power transmission lines, in particular to a four-split wire retaining hook, comprising a support frame (1), a hook (2), a wire retaining hook (4) and a stop spring (10), wherein the support The frame (1) is strip-shaped; there are two hooks (2), which are movably connected to both ends of the support frame (1) through bolts (3) and nuts (6) that cooperate with each other; 4) There are two, respectively composed of a fixed hook and a movable hook, the fixed hook and the support frame (1) are integrally formed, the movable hook is movably connected to the support frame (1) through a rivet (5), the fixed hook The tip of the hook is connected with features such as a stop spring pin seat (7) by a screw (9). The function of the present invention is: easy to operate, strong in safety and reliability, effectively improves work efficiency, reduces the labor intensity of operators, fully guarantees the safety of operators and equipment, and prevents accidents of equipment and operators.

Description

A four-split wire retaining hook

technical field

The invention relates to a live working tool for a power transmission line, in particular to a four-split wire retaining hook.

Background technique

With the continuous development of social economy and the continuous improvement of people's living standards, the demand for energy, especially electric energy, is also increasing. The construction of a strong and smart grid has gradually become the consensus of the whole society. It is urgent to build a sufficient number of 500kV and above ultra-high voltage transmission lines. At present, the 500kV overhead power line (hereinafter referred to as 500kV line) has become the main trunk line of my country's power transmission network. Improving its operation and maintenance level to ensure the reliability of power grid power supply is very important for improving the quality of power supply and the service level of power companies. significance.

The 500kV line is in a strong electromagnetic environment for a long time, and the insulator in operation is under the combined action of mechanical load and electromagnetic field for a long time. Due to environmental pollution or possible quality defects of the insulator itself, the insulation resistance value of the insulator will gradually decrease, and even deteriorate to a zero-value insulator , lose the insulation ability, which will further increase the electromagnetic field strength of other intact insulators in the insulator string, accelerate its aging, increase the leakage current of the line, and reduce the insulation level; due to the high suspension height of the 500kV line tower, the normal operation of the insulator is very easy Damaged by lightning strikes will endanger the normal operation of the line. Therefore, zero value or damaged insulators must be replaced immediately to ensure safe and stable operation of the line.

Replacing a single piece (or a whole string) of insulators while live is a relatively common operation item in the maintenance work of 500kV lines. Because live work is adopted, there is no need for power failure, which is conducive to improving the reliability of power supply. However, there are many on-site operators, the operation is difficult, and the risk is high. In order to prevent wires from falling out of control due to factors such as tool failure during the replacement of insulators, endangering the safety of operators and damaging equipment and tools, in addition to installing necessary wire lifting tools, wire protection measures must also be taken for the four-split wires . The traditional line protection measure is to use an insulated safety rope combined with a U-shaped ring or a buckle to wrap and fix the four-split conductor. It is also necessary for the operator to go down to the wire again for manual operation, which is inconvenient to operate and has a high safety risk. During the operation, sub-conductors are prone to twisting and insufficient spacing between sub-conductors, which cannot fully play the role of wire protection.

Contents of the invention

The purpose of the present invention is to provide a four-split wire retaining hook, which solves the problems that the existing wire lifting tools are extremely inconvenient when installing and dismounting, and are prone to twisting of sub-conductors, insufficient spacing between sub-conductors, and low safety. .

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions: a four-split wire retaining hook, including a support frame, a hook, a wire retaining hook and a stop spring, wherein the support frame is strip-shaped; the hook has Two, respectively, are movably connected to both ends of the support frame through bolts and nuts that cooperate with each other; there are two wire retaining hooks, which are respectively composed of a fixed hook and a movable hook, and the fixed hook and the support frame are integrally formed. The movable hook is movably connected on the support frame through a rivet, and the tip of the fixed hook is connected with a stop spring pin seat by a screw, and a spring pin is installed on the stop spring pin seat through a stop spring, and the spring pin The tip extends into the hook groove on the movable hook to compress the buckled lead wire.

A further technical solution is that the hook is in the shape of a letter "J".

A further technical solution is that the fixed position of the rivet is in the middle of the movable hook, and the part of the movable hook below the rivet can be completely submerged in the groove of the fixed hook.

Compared with the prior art, the beneficial effects of the present invention are: easy operation, strong safety and reliability, effectively improving work efficiency, reducing the labor intensity of operators, fully ensuring the safety of operators and equipment, and preventing equipment and worker accident.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic diagram showing the enlarged structure at A in Fig. 1 and the state of the movable hook.

FIG. 4 is an exploded view of the structure of FIG. 1 .

In the figure: 1 is a support frame, 2 is a hook, 3 is a bolt, 4 is a wire retaining hook, 5 is a rivet, 6 is a nut, 7 is a stop spring pin seat, 8 is a spring pin, 9 is a screw, and 10 is a stop spring , 11 is the hook groove.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Figures 1-4 show an embodiment of a four-split wire retaining hook of the present invention: a four-split wire retaining hook, including a support frame 1, a hook 2, a retaining hook 4 and a stop spring 10, Wherein said bracing frame 1 is strip shape; There are two described hooks 2, which are movably connected to the two ends of the bracing frame 1 by mutually cooperating bolts 3 and nuts 6; Composed of a fixed hook and a movable hook, the fixed hook and the support frame 1 are integrally formed, the movable hook is movably connected to the support frame 1 through a rivet 5, and the tip of the fixed hook is connected with a stop spring pin seat through a screw 9 7. A spring pin 8 is installed on the stop spring pin seat 7 through a stop spring 10, and the tip of the spring pin 8 extends into the hook groove 11 on the movable hook to compress the buckled wire.

It is worth pointing out that the distance between the centers of the wire retaining hooks 4 at both ends of the support frame 1 is preferably 450 mm, and the distance between the centers of the wire retaining hooks 4 and the hook 2 on the same side is also optimally 450 mm. Of course, these distances can be determined according to Adjust the actual usage environment.

According to a preferred embodiment of the four-split wire retaining hook of the present invention, the hook 2 is in the shape of a letter "J".

According to another preferred embodiment of the four-split wire retaining hook of the present invention, the fixed position of the rivet 5 is in the middle of the movable hook, and the movable hook part below the rivet 5 can be completely submerged in the groove 11 of the fixed hook. The movable hook of this shape is like a ring with a gap for the wire to enter and exit. When the wire is stuck into the movable hook, the movable hook rotates and sinks into the groove 11 of the fixed hook. Under the action, the wire is squeezed to play the role of a clamping and fixing point.

When using the present invention, the operator can use the insulating operating rod on the crossarm to carry out the wire protection operation without going down to the wire; after the four-split wire is hung into the wire protection hook, under the action of the spring, the wire protection hook can lock itself , to ensure that the sub-conductors will not be twisted, and their spacing is also within the range specified by the design; when removing the wire protection measures, the operator can also complete the operation with the help of an insulating operating rod on the cross arm, so as to achieve safe and efficient operation.

In the present invention, the supporting frame and the sub-wire hook body can be made of titanium alloy, the bolts, wire retaining hooks, rivets, and nuts can be made of low-carbon steel, and the stop spring pin seat can be made of titanium alloy. Bit springs, screws, etc. can be made of high-strength steel.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it is to be understood that numerous other modifications and implementations can be devised by those skilled in the art which will fall within the scope of the disclosure disclosed in this application. within the scope and spirit of the principles. More specifically, within the scope of the disclosure, drawings and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to variations and modifications to the component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (3)

1. conductors on quad bundled protects a line hook, including bracing frame (1), links up with (2) and protects line hook (4), wherein said Support (1) is strip；Described hook (2) has two, and the bolt (3) by cooperating is lived with nut (6) respectively It is automatically connected in the two ends of bracing frame (1)；Described guarantor's line hook (4) has two, is made up of stay hook and movable hook respectively, institute State stay hook and bracing frame (1) is one-body molded；It is characterized in that: described movable hook is movably connected in by rivet (5) and props up On support (1), the most advanced and sophisticated place of described stay hook is connected by screw (9) stop bit spring key seat (7)；Described stop bit bullet Being provided with spring catch (8) by stop bit spring (10) on spring key seat (7), activity is stretched at the tip of described spring catch (8) The wire buckled into can be compressed in hook and slot (11) on hook.

A kind of conductors on quad bundled the most according to claim 1 protects line hook, it is characterised in that: described hook (2) is word Female " J " shape.

A kind of conductors on quad bundled the most according to claim 1 protects line hook, it is characterised in that: consolidating of described rivet (5) The middle part at movable hook is put in location, is positioned at the movable hook part of rivet (5) lower section and can submerge completely the groove (11) of stay hook In.