CN110739640B - A tipping pulley for equal potential operation of multi-circuit vertically arranged conductors - Google Patents

Abstract

The invention discloses a multi-loop vertical arrangement wire equipotential operation tipping bucket pulley, which comprises a body, a rod body fixedly arranged at the upper end of the body and extending upwards, a hanging ring fixedly arranged at the upper end of the rod body, a connecting lug fixedly arranged at the lower end of the body, a lower pulley rotatably arranged on the connecting lug and used for connecting an insulating rope, an upper pulley rotatably arranged at the upper part of the body, a sealing door connected with the body, and a guide plate fixedly arranged at the lower end of the sealing door, wherein the lower pulley is rotatably arranged on the connecting lug; the body is provided with a through groove, and the lower part of the body is provided with an opening communicated with the through groove and used for a lead to enter; the sealing door comprises hook bodies symmetrically positioned at two sides of the body, and the end parts of the two hook bodies are fixedly connected into a whole; the hook body comprises a transverse edge hinged with the upper part of the body, a long edge fixedly connected with one end of the transverse edge and extending towards the opening, and a short edge fixedly connected with the other end of the transverse edge and extending downwards.

Description

A tipping pulley for equal potential operation of multi-circuit vertically arranged conductors

Technical Field

The invention relates to the technical field of power grid maintenance equipment, in particular to a special tipping bucket pulley for equal potential operation of multi-circuit vertically arranged conductors.

Background technique

During the live maintenance of transmission lines, the most commonly used method in China is to use the soft ladder method to enter the strong electric field for equipotential work. When equipotential workers enter the electric field through the insulated soft ladder method, the following problems exist:

1. When hoisting the insulated soft ladder to the working phase conductor, the operator needs to use an insulated operating rod to hang the traditional tipping pulley on the conductor. During this process, when hanging the tipping pulley on 110kV and 220kV lines, three to four operating rods are required, which are 4.5-6m long, requiring high arm strength of the operator. In addition, the pulley under the tipping pulley is connected with an insulating rope, which makes the operation difficult and time-consuming.

2. When taking out the traditional dump pulley, the operator also needs to use an insulated operating rod to operate. The installation and removal process of the dump pulley takes a long time and the operation is more complicated;

3. The design of the door sealing mechanism of the traditional dump pulley is defective. During actual use and maintenance, the door sealing spring is directly installed on the door sealing plate and is prone to damage.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a multi-circuit vertically arranged conductor equipotential operation dump pulley that can improve operation efficiency and reduce operation risks.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

A tipping pulley specially used for equipotential operation of multi-circuit vertically arranged conductors, comprising a main body, a rod body fixedly arranged at the upper end of the main body and extending upward, a lifting ring fixedly arranged at the upper end of the rod body, a connecting ear fixedly arranged at the lower end of the main body, a lower pulley rotatably mounted on the connecting ear and used to connect an insulating rope, an upper pulley rotatably arranged at the upper part of the main body, a sealing door connected to the main body, and a guide plate fixedly arranged at the lower end of the sealing door; a through groove is arranged on the main body, and the lower part of the main body has an opening connected to the through groove for the conductor to enter; the sealing door comprises hook bodies symmetrically located on both sides of the main body, and the ends of the two hook bodies are fixedly connected to form an integral body; the hook body comprises a transverse side hinged to the upper part of the main body, a long side fixedly connected to one end of the transverse side and extending toward the opening, and a short side fixedly connected to the other end of the transverse side and extending downward; a guide rod located between the two hook bodies is fixedly arranged on the upper side of the opening of the main body, The guide rod extends to a side away from the main body; the guide plate is fixedly connected to the lower end of the long side and extends obliquely downward away from the main body; the upper pulley is rotatably installed on the main body through a rotating shaft and is located in the through groove; a vertically arranged waist hole for the rotating shaft to pass through is provided on the main body; the rotating shaft is penetrated through the waist hole of the main body and can move relative to the waist hole; one end of the rotating shaft is fixedly connected to a compression spring, and the other end of the compression spring is downward and fixedly connected to the main body; when the compression spring is extended to make the upper pulley located at the upper limit position, the upper pulley contacts the short side of the hook body and makes the long side of the hook body seal the opening to achieve the locking of the opening; when the long side of the hook body is rotated under force, the short side of the hook body contacts the upper pulley and pushes the upper pulley to move downward, and the opening is opened; the horizontal side of the hook body is connected to the main body through a pin; the guide plate is connected to the hook body through a screw; the rod body and the lifting ring are an integral part.

Preferably, bolts for connecting the compression spring are provided on the main body.

Preferably, the rod body is connected to the main body by welding.

Compared with the prior art, the present invention has the following advantages:

1. The tipping pulley can be mounted by using an insulating hanging plate connected to a hook by hanging from a drone, thus avoiding the need for ground potential operators on the tower to use insulating operating rods for hanging, reducing operation time, reducing one high-altitude operator on the tower, and reducing human resource investment for live operations.

2. There is also a thin insulating rope in the hanging ring above the dump pulley. After the work is completed, the matching lock is installed on the thin insulating rope and passed to the insulating pulley. The lock buckles the hanging ring of the dump pulley. When the insulating thin rope is continuously pulled, the dump pulley is driven by the lock to reverse and come off the conductor/ground wire. There is no need for the ground potential operator on the tower to remove the dump pulley;

3. This tipping pulley connects the door closing device spring with the pulley to better meet the working requirements and protect the spring from being over-extended for a long time.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is a right side view of FIG. 1 .

FIG3 is a perspective view of FIG1.

FIG. 4 is a schematic diagram of the opening and closing state of the sealing door in FIG. 1 , wherein the dotted line represents the state where the sealing door is opened by force F.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In the following description, in order to clearly show the structure and working mode of the present invention, the drawings will be used as a reference and described with the help of many directional terms, but the words "front", "back", "left", "right", "up", "down" and so on should be understood as convenient terms, and should not be understood as restrictive terms.

The special tipping pulley for equipotential operation of multi-circuit vertically arranged conductors shown in Figures 1-4 includes a main body 1, a rod body 2 fixedly arranged at the upper end of the main body 1 and extending upward, a lifting ring 3 fixedly arranged at the upper end of the rod body 2, a connecting ear 4 fixedly arranged at the lower end of the main body 1, a lower pulley 5 rotatably mounted on the connecting ear 4 and used to connect an insulating rope, an upper pulley 6 rotatably arranged at the upper part of the main body 1, a sealing door connected to the main body 1, and a guide plate 8 fixedly arranged at the lower end of the sealing door; a through groove 9 is arranged on the main body 1, and the lower part of the main body 1 has an opening 10 connected to the through groove 9 for the conductor to enter; the sealing door includes hook bodies 11 symmetrically located on both sides of the main body 1, and the ends of the two hook bodies 11 are fixedly connected to form an integral body; the hook body 11 includes a horizontal side 12 hinged to the upper part of the main body 1, a long side 13 fixedly connected to one end of the horizontal side 12 and extending to the opening 10, and a short side 14 fixedly connected to the other end of the horizontal side 12 and extending downward; the upper side of the opening 10 of the main body 1 is fixedly arranged There is a guide rod 15 located between the two hook bodies 11, and the guide rod 15 extends to the side away from the body 1; the guide plate 8 is fixedly connected to the lower end of the long side 13 and extends obliquely downward away from the side of the body 1; the upper pulley 6 is rotatably mounted on the body 1 through the rotating shaft 16 and is located in the through groove 9; the body 1 is provided with a vertically arranged kidney hole 17 for the rotating shaft 16 to pass through; the rotating shaft 16 is penetrated through the kidney hole 17 of the body 1 and can move relative to the kidney hole 17; the rotating shaft 16 One end of the shaft 16 is fixedly connected to a compression spring 18, and the other end of the compression spring 18 is downward and fixedly connected to the main body 1; when the compression spring 18 is extended to make the upper pulley 6 located at the upper limit position, the upper pulley 6 contacts the short side 14 of the hook body 11 and makes the long side 13 of the hook body 11 seal the opening 10, thereby locking the opening 10; when the long side 13 of the hook body 11 is rotated under force, the short side 14 of the hook body 11 contacts the upper pulley 6 and pushes the upper pulley 6 to move downward, and the opening 10 opens.

In this embodiment, the main body 1 is provided with a bolt 19 for connecting the compression spring 18, and it is obvious that a connection hole for connecting the compression spring can also be provided. The horizontal side 12 of the hook body 11 is connected to the main body 1 through a pin 7, and it is obvious that a rivet or other component can also be used. The guide plate 8 is connected to the hook body 11 through a screw. The rod body 2 is connected to the main body 1 by welding, and it is obvious that a common connection method such as threaded connection can also be used. The rod body 2 and the lifting ring 3 are preferably an integrally formed one-piece.

When in use, the tipping block is hoisted by the lifting ring through the corresponding lifting equipment (such as a drone, etc.) to lift the conductor/ground wire above the working phase conductor. Before the tipping block rises, an insulating rope can be wound around the lower pulley 5 for hoisting; then the tipping block is controlled to descend and the lower side of the guide plate 8 is in contact with the conductor. At this time, under the action of the gravity of the tipping block itself, the guide plate 8 drives the sealing door to rotate, and at the same time, the short side 14 of the hook body 11 drives the upper pulley 6 to descend and compress. At this time, the conductor enters the through groove 9 from the opening along the guide plate and contacts the upper pulley. After entering the through groove 9, the guide plate 8 is no longer affected by external force, the compression spring 18 drives the upper pulley 6 to the upper limit position, the long side 13 of the hook body 11 closes the opening 10, and the lifting equipment of the lifting ring 3 is removed. At this time, the insulating rope of the lower pulley 5 can be used for corresponding lifting operations; when it is necessary to remove the tipping pulley, use the lock installed on the thin insulating rope in the lifting ring of the tipping pulley again, lift it to the lifting position 3, lock the lifting ring 3, continue to pull the insulating thin rope to reverse the tipping pulley, the sealing door mechanism automatically opens, and the tipping pulley escapes from the guide/ground wire.

The lifting ring 3 can also be lifted by corresponding lifting equipment (such as a drone, etc.). When the wire reaches the opening 10 and contacts the long side 13 of the hook body 11, the hook body 11 is flipped under the upward pulling force of the lifting equipment. At this time, the wire automatically slides out of the opening 10. When the wire is separated from the hook body 11 and the guide plate 8, the compression spring 18 drives the sealing door to close again.

The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. For those skilled in the art, any modification, equivalent replacement and improvement of the technical solutions or partial technical features recorded in the above specific embodiments within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (3)

1. A multi-loop vertical arrangement wire equipotential operation tipping bucket pulley is characterized in that: the device comprises a body, a rod body, a hanging ring, a connecting lug, a lower pulley, an upper pulley, a door and a guide plate, wherein the rod body is fixedly arranged at the upper end of the body and extends upwards; the body is provided with a through groove, and the lower part of the body is provided with an opening communicated with the through groove and used for a lead to enter; the sealing door comprises hook bodies symmetrically positioned at two sides of the body, and the end parts of the two hook bodies are fixedly connected into a whole; the hook body comprises a transverse edge hinged with the upper part of the body, a long edge fixedly connected with one end of the transverse edge and extending towards the opening, and a short edge fixedly connected with the other end of the transverse edge and extending downwards; a guide rod positioned between the two hook bodies is fixedly arranged on the upper side of the opening of the body, and the guide rod extends out to one side far away from the body; the guide plate is fixedly connected to the lower end of the long side and extends obliquely downwards away from the body side; the upper pulley is rotatably arranged on the body through a rotating shaft and positioned in the through groove; the body is provided with a waist hole which is used for the rotating shaft to pass through and is vertically arranged; the rotating shaft penetrates through the kidney hole of the body and can move relative to the kidney hole; one end of the rotating shaft is fixedly connected with a pressure spring, and the other end of the pressure spring is downward and fixedly connected with the body; when the pressure spring stretches to enable the upper pulley to be located at the upper limit position, the upper pulley is in contact with the short side of the hook body, and the long side of the hook body seals the opening, so that the opening is locked; when the long side of the hook body is stressed to rotate, the short side of the hook body contacts with the upper pulley and pushes the upper pulley to move downwards, and the opening is opened; the transverse edge of the hook body is connected with the body through a pin; the guide plate is connected with the hook body through a screw; the rod body and the hanging ring are integrated.

2. The multi-loop, vertically aligned conductor isoelectric process dump block of claim 1 wherein: the body is provided with a bolt for connecting the pressure spring.

3. The multi-loop, vertically aligned conductor isoelectric process dump block of claim 1 wherein: the rod body is welded with the body.