CN105914654B - Livewire work bowl head setting tool - Google Patents

Abstract

The invention relates to the technical field of insulator string replacement tools for live work, and is a bowl head fixing tool for live work, which includes a shackle head and an insulating operating rod. The right part of the body is bent downward to form a shackle slot with the opening facing down and can be stuck on the outside of the middle part of the bowl head hanging plate. The lower end of the left part of the shackle body is fixedly connected with the upper part of the seat rod, or the shackle body The left part is integrated with the upper part of the seat post. The invention has a reasonable and compact structure and is easy to use. It fixes and supports the bowl head of the bowl head hanging plate through the hook and ring body, prevents the bowl head hanging plate from tilting and the bowl head slipping when the M-shaped pin is installed and unloaded, and is suitable for the vertical wire of the bowl slot hole The connection operation between the bowl-head hanging plate and the composite insulator string in the direction can realize the replacement of the composite insulator string in live work, realize the elimination of defects in time, improve the reliability of power supply, and have significant social and economic benefits. It is safe, labor-saving, simple and convenient. Efficient features.

Description

Bowl head fixing tool for live work

technical field

The invention relates to the technical field of live work replacement tools for insulator strings, and relates to a bowl head fixing tool for live work.

Background technique

Insulators play an important role in supporting wires and preventing current from returning to the ground in overhead transmission lines. In addition to bearing the weight of wires and metal accessories, insulators must also withstand wind loads, snow loads, wire galloping, and operations during transportation and installation under severe weather conditions. Improper shock loads and overvoltage shocks caused by lightning and switching operations. Composite insulator strings are mostly used at present. Under the influence of lightning, birds, heavy fog and other factors, the quality of porcelain insulators will be unstable. The short-circuit current of heavy fog flashover will cause the insulators to heat up and burst. Electric corrosion damage occurs, causing the sheath to be damaged and water ingress and damp, resulting in hydrolysis, pulverization, corrosion, and discoloration of the mandrel. The overall mechanical strength of the mandrel section decreases, and it will break under normal mechanical load. Therefore, it is necessary to inspect and replace defective, damaged, and old composite insulator strings that affect power supply in time to prevent transmission line failures and accidents.

At present, there are many composite insulator strings that hang the connecting wires through the bowl hanging plate and the suspension wire clamp. The lower end of the composite insulator string has a ball head, and the upper end of the bowl hanging plate has a bowl head with a bowl hole. The direction of the bowl hole is usually perpendicular to The direction of the wire is or is the same as the direction of the wire. The ball head is set in the bowl hole and fixed by the M-shaped pin. When replacing the composite insulator string, for the composite insulator string installed in the bowl hole in the same direction as the wire, there is currently a special tool that can remove the M-shaped pin in the bowl hole, take the ball head out of the bowl hole, After replacing a new composite insulator string, the ball head can be fixed by the M-shaped pin and related operations can be completed, but for the composite insulator string installed in the bowl hole perpendicular to the direction of the wire, the special tool cannot be used, and can only wait for power failure Finally, maintenance personnel climb up the wire along the composite insulator string, stand on the wire and lift the wire with a manual pulley sling, remove the M-shaped pin when the composite insulator string is loose, take the ball head out of the bowl hole, and remove the defective wire. When installing a new composite insulator string, because the bowl head hanging plate is easy to tilt due to its own weight, it is impossible to install the ball head of the composite insulator string into the bowl hole and fix it with the M-shaped pin. The personnel operate at close range to complete the installation, and finally loosen the wires through the manual pulley spreader to force the composite insulator strings, and remove the manual pulley spreader to complete the work. Therefore, at present, there are the following problems for the bowl hanging plate with the vertical wire direction of the existing bowl hole: the bowl hanging plate is easy to tilt, it is not easy to fix the limit, the composite insulator string ball head cannot be installed, and live work cannot be carried out for maintenance and replacement. The operation is not only time-consuming and labor-intensive, but also time-consuming and labor-intensive, with low work efficiency.

In addition, due to the wide radiation area of high-voltage transmission lines, the social impact and economic impact caused by power outages are relatively large. In order to ensure continuous power supply, power supply companies usually make plans to carry out maintenance tasks during power outages to overhaul and maintain high-voltage transmission lines. 1. Replacement of composite insulator strings, because the defects cannot be eliminated in time, the maintenance work is relatively passive, and there are potential safety hazards. Once the composite insulator strings with defects are damaged, unexpected power outages will occur, resulting in greater power supply losses.

Contents of the invention

The invention provides a bowl head fixing tool for live work, which overcomes the above-mentioned deficiencies in the prior art. The ball head cannot be installed, and live work cannot be realized. The replacement operation takes a long time, is time-consuming and laborious, and the work efficiency is low. If it cannot be replaced in time, there are potential safety hazards.

The technical solution of the present invention is achieved through the following measures: a live work bowl head fixing tool, including a shackle head and an insulating operating rod, the shackle head includes a U-shaped shackle body and a connecting rod, the shackle body The right part of the hook and loop body is bent downward to form a shackle slot with the opening facing downward and can be stuck outside the middle of the bowl head hanging plate. The lower end of the left part of the shackle body is fixedly connected with the upper part of the seat post, or the left The upper part of the connecting rod is connected as a whole, the insulating operating rod includes an insulating rod and a locking joint, the lower part of the locking joint is fixed on the upper end of the insulating rod, and the lower part of the connecting rod is fixedly installed on the upper part of the locking joint.

Below is the further optimization or/and improvement to above-mentioned technical scheme of the invention:

The above-mentioned shackle slot can be wedge-shaped with a large top and a small bottom.

A grasping ring platform may be provided on the outside of the middle part of the above-mentioned seat rod, and knurls or anti-slip protrusions or anti-slip grooves are evenly distributed on the outer surface of the grasping ring platform.

The above-mentioned locking joint may include a seat body fixed on the upper end of the insulating rod, a connecting sleeve, a pressure spring, a locking sleeve and a locking cross pin. , the left side of the middle part of the connecting sleeve and the right side of the middle part are respectively provided with a left long hole and a right long hole with the long axis along the vertical direction, the locking sleeve is installed outside the connecting sleeve, and the two ends of the locking horizontal pin are respectively fixed on the left part and The right part, the left and right parts of the locking cross pin are respectively set in the left long hole and the right long hole, a pressure spring is installed in the connecting sleeve, and the upper end of the pressure spring is pressed on the lower end surface of the locking cross pin; the outer side of the lower part of the seat rod There are external threads that can be matched with the fixed thread, the lower part of the seat post is fixedly installed in the upper inner cavity of the connecting sleeve through the fixed thread and the external thread, and there is no less than one split valve on the lower end surface of the seat post Groove, the middle part of the split groove passes through the axis of the connecting rod, the width of the split groove is greater than or equal to the diameter of the locking cross pin, and the upper end of the locking cross pin is pressed against the bottom of the split groove.

The number of the above-mentioned splitting grooves can be two and distributed in a cross shape, and the lower end of the seat rod is divided into four petals through the splitting grooves.

The lower end of the right part of the above-mentioned hook and loop body can be connected with a guide section inclined downward to the right, and a guide opening with a lower part and an upper part and a smaller one is formed between the guide part and the left part of the hook and loop body.

The left side of the connection between the lower right end of the hook and loop body and the upper end of the guide section may be a smooth transitional curved surface.

The invention has a reasonable and compact structure and is easy to use. It fixes and supports the bowl head of the bowl head hanging plate through the hook and ring body, prevents the bowl head hanging plate from tilting and the bowl head slipping when the M-shaped pin is installed and unloaded, and is suitable for the vertical wire of the bowl slot hole The connection operation between the bowl-head hanging plate and the composite insulator string in the direction can realize the inspection and maintenance work of replacing the composite insulator string in live operation of 110 kV to 220 kV transmission line, and can replace the composite insulator string in time to eliminate defects and improve the reliability of power supply It has remarkable social and economic benefits, and has the characteristics of safety, labor saving, simplicity and high efficiency.

Description of drawings

Accompanying drawing 1 is the partial sectional structural schematic diagram of front view of the preferred embodiment of the present invention.

Accompanying drawing 2 is the use diagram of the best embodiment of the present invention.

Accompanying drawing 3 is the schematic left view of accompanying drawing 2.

The codes in the drawings are: 1 is the hook and loop body, 2 is the seat rod, 3 is the bowl head hanging plate, 4 is the hook and loop slot, 5 is the insulating rod, 6 is the guide section, and 7 is the guide opening , 8 is the seat cover body, 9 is the connecting sleeve, 10 is the pressure spring, 11 is the locking sleeve, 12 is the locking horizontal pin, 13 is the fixed thread, 14 is the left long hole, 15 is the right long hole, 16 is split Groove, 17 is to grasp ring platform, and 18 is bowl groove hole, and 19 is lead, and 20 is M shape pin, and 21 is composite insulator string, and 22 is ball head, and 23 is suspension clamp.

Detailed ways

The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

In the present invention, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of Figure 1 of the specification, such as: the positional relationship of front, rear, top, bottom, left, right, etc. It is determined according to the layout direction of the drawings in the description.

Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

As shown in accompanying drawings 1, 2, and 3, the live work bowl head fixing tool includes a shackle head and an insulating operating rod. The shackle head includes a U-shaped shackle body 1 and a seat rod 2. The shackle body 1 The right part is bent downward to form the shackle groove 4 with the opening facing downward and can be stuck on the outside of the middle part of the bowl head hanging plate 3. The lower end of the left part of the shackle body 1 is fixedly connected with the upper part of the seat rod 2, or the hook The left part of the ring body 1 is integrated with the top of the seat rod 2, and the insulating operating rod includes an insulating rod 5 and a locking joint. The present invention is applicable to the maintenance work of the composite insulator string connected on the bowl head hanging plate 3 in the direction of the vertical wire 19 of the bowl slot hole 18, especially the live replacement operation of the insulator string of the 110 kV to 220 kV transmission line, and the auxiliary personnel on the ground The wire 19 and the suspension wire clamp 23 are lifted by the manual pulley spreader, the suspension wire clamp 23 drives the bowl head hanging plate 3 to move upward, and the ball head 22 at the lower end of the composite insulator string 21 no longer bears the pull-down force of the bowl head hanging plate 3 upper end bowl head , the overhaul personnel stand on the pole tower and can work live, hold the insulating rod 5 of the present invention, fix and support the bowl head of the bowl head hanging plate 3 by the hook and ring body 1, prevent the bowl head hanging plate 3 from tilting when loading and unloading the M-shaped pin 20 , the bowl head slips off, and then the ball head 22 at the lower end of the composite insulator string 21 can be packed into the bowl hole 18 by a tool, and then the M-shaped pin 20 is installed by a supporting operating tool to complete the replacement of the composite insulator string. Skilled maintenance personnel can complete the maintenance work by only one person, which not only reduces the labor intensity, saves time and effort, and has high work efficiency, but also can complete the maintenance work that can only be performed through power failures when the power is on. Timely replacement of composite insulator strings to eliminate defects improves power supply reliability and has significant social and economic benefits.

According to actual needs, the above-mentioned live working bowl head fixing tool can be further optimized or/and improved:

As shown in Figure 1 , the shackle groove 4 is wedge-shaped with a large top and a small bottom. The wedge-shaped shackle groove 4 can hold the bowl hanging plate 3 firmly and stably, which is convenient for the follow-up work.

As shown in accompanying drawings 1 and 3, a grasping ring platform 17 is provided on the outside of the middle part of the seat post 2, and knurling or anti-slip protrusions or anti-slip grooves are evenly distributed on the outer surface of the grasping ring platform 17. The installation or disassembly of the shackle head and the insulating operating rod is facilitated by grasping the ring platform 17, and the twisting is more labor-saving.

As shown in accompanying drawings 1 and 3, the locking joint includes a seat body 8 fixed on the upper end of the insulating rod 5, a connecting sleeve 9, a pressure spring 10, a locking sleeve 11 and a locking cross pin 12, and the lower end of the connecting sleeve 9 is connected to the seat body 8. The upper end is connected as a whole, and the upper inner wall of the connecting sleeve 9 has fixed threads 13, the left side of the middle part of the connecting sleeve 9 and the right side of the middle part are respectively provided with a left long hole 14 and a right long hole 15 with a long axis along the vertical direction, and the locking sleeve 11 is installed outside the connection sleeve 9, the two ends of the locking cross pin 12 are respectively fixed on the left and right parts of the locking sleeve 11, and the left and right parts of the locking cross pin 12 are respectively set in the left elongated hole 14 and the right elongated hole 15 , a pressure spring 10 is installed in the connecting sleeve 9, and the upper end of the pressure spring 10 is pressed against the lower end surface of the locking cross pin 12; the outer side of the lower part of the seat rod 2 has an external thread that can be matched with the fixed thread 13, and the lower part of the seat rod 2 It is fixedly installed in the upper inner cavity of the connecting sleeve 9 through the fixed thread 13 and the external thread. The lower end surface of the seat rod 2 is provided with no less than one split groove 16, and the middle part of the split groove 16 passes through the seat rod 2. axis, the width of the split groove 16 is greater than or equal to the diameter of the locking cross pin 12, and the upper end of the locking cross pin 12 is pressed against the bottom of the split groove 16. After the seat bar 2 is fixedly installed in the connecting sleeve 9, the seat bar 2 can be clamped by locking the horizontal pin 12, preventing the shackle body 1 from turning during operation, and at the same time preventing the seat bar 2 from falling off when rotating relative to the connecting sleeve 9. buckle, better safety and reliability.

According to actual needs, there are two splitting grooves 16 distributed in a cross shape, and the lower end of the seat rod 2 is divided into four petals through the splitting grooves 16 . The two split grooves 16 are more convenient for the installation and fixing of the seat rod 2 .

As shown in Figure 1, the lower end of the right part of the hook and loop body 1 is connected with a guide section 6 that is inclined downward to the right, and a guide opening 7 that is larger at the bottom and smaller at the top is formed between the guide section 6 and the left part of the hook and loop body 1. . The introduction of the bowl head hanging plate 3 is facilitated by the guide opening 7, and the operation is easier.

As shown in Figure 1, the left side of the connection between the lower end of the right part of the hook and loop body 1 and the upper end of the guide section 6 is a smooth transitional curved surface. The connection is a smooth curved surface, and the resistance when loading or removing from the bowl head hanging plate 3 is relatively small, and the operation is relatively convenient.

The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations.

Claims (7)

1. A live work bowl head fixing tool is characterized in that it includes a shackle head and an insulating operating rod, the shackle head includes a U-shaped shackle body and a seat rod, and the right part of the shackle body is bent downward to form The opening is downward and can be stuck in the shackle slot outside the middle part of the bowl head hanging plate. The lower end of the left part of the shackle body is fixedly connected with the upper part of the seat bar, or the left part of the shackle body is connected with the upper part of the seat bar. One body, the insulating operating rod includes an insulating rod and a locking joint, the lower part of the locking joint is fixed on the upper end of the insulating rod, and the lower part of the seat rod is fixed on the upper part of the locking joint; The lower end of the upper part is connected with a guide section inclined downward to the right, and a guide opening with a large lower part and a smaller upper part is formed between the guide part and the left part of the shackle body; the locking joint includes a seat cover fixed on the upper end of the insulating rod, a connecting sleeve, Pressure spring, locking sleeve and locking horizontal pin, the lower end of the connecting sleeve is integrated with the upper end of the seat sleeve body, the upper inner wall of the connecting sleeve has a fixed screw thread, and the left side and the right side of the middle part of the connecting sleeve are respectively provided with a long axis along the vertical axis. The left long hole and the right long hole in the direction, the locking sleeve is installed outside the connecting sleeve, the two ends of the locking cross pin are respectively fixed on the left and right parts of the locking sleeve, and the left and right parts of the locking cross pin are respectively set in the left long hole And in the right long hole, a pressure spring is installed in the connecting sleeve, and the upper end of the pressure spring is pressed against the lower end surface of the locking cross pin; the outer side of the lower part of the seat rod has an external thread that can match the fixed thread, and the lower part of the seat rod passes through the fixed The connecting thread and external thread are fixedly installed in the upper inner cavity of the connecting sleeve. There is no less than one split groove on the lower end surface of the seat rod. The middle part of the split groove passes through the axis of the seat rod. The width dimension is greater than or equal to the diameter dimension of the locking cross pin, and the upper end of the locking cross pin is pressed against the groove bottom of the split groove. 2. The bowl head fixing tool for live work according to claim 1, characterized in that there is a gripping ring on the outer side of the middle part of the seat rod, and knurls are evenly distributed on the outer surface of the gripping ring. 3. The bowl head fixing tool for live work according to claim 1, characterized in that there is a grip ring platform outside the middle part of the seat rod, and anti-slip protrusions are evenly distributed on the outer surface of the grip ring platform. 4. The bowl head fixing tool for live work according to claim 1, characterized in that there is a gripping ring platform outside the middle part of the seat rod, and anti-slip grooves are evenly distributed on the outer surface of the gripping ring platform. 5. The live work bowl head fixing tool according to claim 1 or 2 or 3 or 4, characterized in that the number of split grooves is two and distributed in a cross shape, and the lower end of the seat rod is divided into two parts through the split grooves. Four petals. 6. The bowl head fixing tool for live work according to claim 1, 2, 3 or 4, characterized in that the left side of the connection between the lower right end of the shackle body and the upper end of the guide section is a smooth transitional curved surface. 7. The bowl head fixing tool for live work according to claim 5, characterized in that the left side of the junction between the lower right end of the shackle body and the upper end of the guide section is a smooth transitional curved surface.