A bolt-fixed composite jumper insulator for non-stop operation

Abstract

The present invention provides a bolt-fixed composite jumper insulator for non-stop power supply operation, comprising a core rod, an umbrella sleeve, an end fitting and a tail fitting, wherein the tail fitting and the end fitting are connected to the core rod by crimping, the umbrella sleeve is pasted on the surface of the core rod, the end fitting and the tail fitting through a coupling agent, and the core rod and the metal exposed parts of the crimping area on the end fitting and the tail fitting are wrapped inside by the umbrella sleeve, and the core rod adopts an epoxy resin glass fiber solid drawing rod, and the core rod is impregnated with resin by glass fiber and continuous reinforcement material and then pulled and extruded into a long cylindrical structure through a forming die. It can meet the relevant requirements of non-stop power supply operation, enhance the power supply reliability of the distribution line, and thus further improve the convenience, economy and safety of non-stop power supply operation of the distribution network.

Description

Technical Field

[0001] The invention relates to the technical field of insulators, and in particular to a bolt-fixed composite jumper insulator for non-stop power supply operation. Background Art

[0002] At present, jumper insulators are required in many places when overhead line cable branches are led down and pole-mounted equipment is installed. In order to meet the relevant requirements of non-stop operation, the current operation is carried out by live operation with ground potential + long-handled insulating operating rod or intermediate potential + short-handled insulating operating rod. However, the original jumper insulators generally use column or rod-type porcelain insulators, which are heavy, short in creepage distance, and low in strength. The end conductors are fixed with binding wires, that is, the wires are fixed by wrapping the binding wires around the wires. This method has problems such as low efficiency, high randomness, poor stability, inconvenient installation, and easy oxidation of the binding wires during installation. In addition, it is impossible to realize single-pole operation of the insulating rod, which makes installation difficult. Summary of the invention

[0003] In order to solve certain technical problems existing in the prior art, the present invention provides a bolt-fixed composite jumper insulator for non-stop operation which is easy to operate, safe to use and has reliable performance. The insulator can meet the relevant requirements of non-stop operation and enhance the power supply reliability of the distribution line, thereby further improving the convenience, economy and safety of non-stop operation of the distribution network.

[0004] In order to solve the above existing technical problems, the present invention adopts the following solutions:

[0005] A bolt-fixed composite jumper insulator for non-stop power operation, characterized in that it includes a core rod, an umbrella sleeve, an end fitting and a tail fitting, the tail fitting and the end fitting are connected to the core rod through crimping, the umbrella sleeve is adhered to the surfaces of the core rod, the end fitting and the tail fitting through a coupling agent, and the core rod and the exposed metal parts of the crimping area on the end fitting and the tail fitting are wrapped inside by the umbrella sleeve, the core rod adopts an epoxy resin glass fiber solid drawing rod, and the core rod is impregnated with resin by glass fiber and continuous reinforcement material and then pulled and extruded into a long cylindrical structure through a molding die.

[0006] Furthermore, the umbrella cover is formed into a plurality of annular protrusion structures by high-temperature vulcanization of silicone rubber, and the protrusion structures are located at the center of gravity of both sides of the umbrella cover.

[0007] Furthermore, the tail hardware is composed of a crimping partition and a fixed partition, the crimping partition includes a cylindrical connecting seat, a hardware connecting groove arranged at one end of the connecting seat, the fixed partition includes a connecting screw arranged at the other end of the hardware connecting groove, and a connecting nut arranged on the connecting screw, the tail hardware is crimped and connected to the rod head cylinder of the core rod through the hardware connecting groove, after the hardware connecting groove is crimped with the core rod, the core rod and part of the connecting seat are wrapped by the umbrella cover to better ensure the insulation and electrical performance of the core rod, and the fixed partition is fixedly connected to the line crossarm.

[0008] Furthermore, the end hardware includes a hanging wire hardware, a hardware crimping groove provided at one end of the hanging wire hardware for crimping connection with the rod head cylinder of the core rod, a hanging wire groove provided on the hanging wire hardware for clamping the wire, an integrated movable screw with one end extending into the hanging wire groove to compress the wire, and a locking nut provided on the integrated movable screw. After the hardware crimping groove is crimped with the core rod, the core rod and part of the hanging wire hardware are wrapped by the umbrella sleeve to better ensure the insulation performance and electrical performance of the jumper insulator, and the integrated movable screw is locked on the hanging wire hardware by the locking nut.

[0009] Furthermore, an adjustment hole is provided on the wire hanging fitting on one side of the wire hanging trough, and the integrated movable screw includes a pressure plate arranged in the wire hanging trough and a hexagonal bolt arranged on the adjustment hole, the pressure plate is arranged at the front end of the hexagonal bolt, and a wire clamping area with adjustable width is formed between the pressure plate and the wire hanging trough, and the pressure plate moves back and forth by rotating the hexagonal bolt.

[0010] Furthermore, a stainless steel nut is embedded in the adjustment hole, and the hexagonal bolt is threadedly screwed onto the stainless steel nut.

[0011] Furthermore, a reverse threaded hole is provided at the front end of the hexagonal bolt, a positioning bolt is provided on the reverse threaded hole, and the pressure plate is fixed in the reverse threaded hole by the positioning bolt.

[0012] Furthermore, both ends of the wire hanging trough are arc-shaped surfaces, the clamping surface of the pressure plate is designed with a full R angle, and the wire clamping area forms an arc-shaped clamping area with both ends concave outward through the clamping surface of the pressure plate and one end surface of the wire hanging trough.

[0013] Furthermore, the locking nut is a hot-dip galvanized nut, and the wire hanging fitting is made of aluminum alloy.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The core rod adopts epoxy resin glass fiber solid drawing rod, and the core rod is impregnated with resin by glass fiber and continuous reinforcement material and then pulled into a long cylindrical structure through a forming die. Compared with the original column or rod porcelain insulator, it has a lighter weight, better integrity, more stable structure and higher mechanical strength. The core rod and the end hardware and the exposed metal part of the tail hardware crimping part are wrapped in the umbrella sleeve. It has the characteristics of full insulation structure, which improves the stability of the connection between the hardware and the core rod, making the operation safer and more reliable. It effectively avoids the problems of wire oxidation, irregular binding and insulator construction trouble caused by the original insulator using wire to fix the conductor, heavy weight, short creepage distance, low strength, and inconvenience for insulating rod operation. It realizes the functions of fixing the conductor and insulating support, and has the characteristics of compact structure, safe and reliable operation, and simple line after installation. At the same time, it reduces the technical requirements for operators and improves work efficiency. The entire composite jumper insulator is easy to operate, safe to use, and has reliable performance. It can meet the relevant requirements of non-stop operations and enhance the power supply reliability of distribution lines, thereby further improving the convenience, economy, and safety of non-stop operations in distribution networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 It is a full cutaway front view of the present invention;

[0018] Figure 3 It is a partial cross-sectional view of the end fitting of the present invention;

[0019] Figure 4 It is a full cross-sectional view of the end fitting of the present invention;

[0020] Figure 5 It is a side view of the end fitting of the present invention;

[0021] Figure 6 It is a partial sectional front view of the tail fitting in the present invention;

[0022] In the figure: wire hanging trough 1, wire hanging fittings 2, wire clamping area 3, fitting crimping groove 4, pressure plate 5, locking nut 6, integrated movable screw 7, hexagonal bolt 8, adjustment hole 9, stainless steel nut 10, reverse threaded hole 11, positioning bolt 12, end fittings 13, protrusion structure 14, umbrella cover 15, core rod 16, tail fitting 17, connecting screw 18, fixed partition 19, connecting nut 20, connecting seat 21, crimping partition 22, fitting connecting groove 23. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Wire hanging trough 11, wire hanging hardware 22, wire clamping area 33, hardware crimping groove 44, pressing plate 55, locking nut 66, integrated movable screw 77, hexagonal bolt 88, adjustment hole 99, stainless steel nut 1010, reverse threaded hole 1111, positioning bolt 1212.

[0024] like Figures 1 to 6 As shown, a bolt-fixed composite jumper insulator for non-stop power operation includes a core rod 16, an umbrella sleeve 15, an end fitting 13 and a tail fitting 17. The tail fitting 17 and the end fitting 13 are connected to the core rod 16 through crimping. The umbrella sleeve 15 is adhered to the surfaces of the core rod 16, the end fitting 13 and the tail fitting 17 through a coupling agent. The core rod 16 and the exposed metal parts of the crimping areas on the end fitting 13 and the tail fitting 17 are wrapped by the umbrella sleeve 15. The core rod 16 adopts an epoxy resin glass fiber solid drawing rod. The core rod 16 is impregnated with resin by glass fiber and continuous reinforcement material and then pulled and extruded into a long cylindrical structure through a molding die.

[0025] In the actual production process, the end fittings 13 and the tail fittings 17 are respectively crimped and connected with the rod head cylinders at both ends of the core rod 16, and the umbrella cover 15 is adhered to the outer surface of the core rod 16 through a coupling agent, and at the same time covers the surface of the connection area of ​​the end fittings 13 and the tail fittings 17. The core rod 16 and the exposed metal parts of the crimping area on the end fittings 13 and the tail fittings 17 are wrapped inside by the umbrella cover 15. When in use, first use the insulating operating rod to buckle the center of gravity of the insulator and put the insulator in place to the installation position; then fasten the tail fitting 17 to the line crossarm with two matching fixing nuts; then place the wire into the end fitting 13, and finally use an electric wrench with an insulating operating rod to fix the wire in the wire slot to prevent the wire from falling off. Among them, the core rod 16 adopts a solid epoxy resin glass fiber drawing rod, and the core rod 16 is impregnated with resin by glass fiber and continuous reinforcement material and then pulled into a long cylindrical structure through a molding die. Compared with the original column or rod porcelain insulator, it has a lighter weight, better integrity, more stable structure, and higher mechanical strength. The core rod 16 and the end hardware 13 and the tail hardware 17 crimping part are wrapped in the umbrella sleeve 15. The exposed metal parts are wrapped inside, which has the characteristics of a fully insulated structure, improves the stability of the connection between the hardware and the core rod 16, and makes the operation safer and more reliable. It effectively avoids the problems of wire oxidation, irregular binding and insulator construction trouble caused by the original insulator using wire to fix the conductor, heavy weight, short creepage distance, low strength, and inconvenience for insulating rod operation, and realizes the functions of fixing the conductor and insulating support. It has the characteristics of compact structure, safe and reliable operation, and simple lines after installation. At the same time, it reduces the technical requirements for operators and improves work efficiency. The entire composite jumper insulator is easy to operate, safe to use, and has reliable performance. It can meet the relevant requirements of non-stop operations and enhance the power supply reliability of distribution lines, thereby further improving the convenience, economy, and safety of non-stop operations in distribution networks.

[0026] A further improvement is that the umbrella cover 15 is formed into a plurality of annular protrusion structures 14 by high temperature vulcanization of silicone rubber, and the protrusion structures 14 are located at the center of gravity of both sides of the umbrella cover 15 .

[0027] The number and width of the protrusion structures 14 on the umbrella cover 15 can be set according to the needs of production and application, which ensures the insulation and electrical properties of the jumper insulator and improves the anti-pollution performance of the jumper insulator. The umbrella cover 15 is made of a high-molecular polymer material with silicone rubber as the matrix and is vulcanized at high temperature. The design conforms to the principles of aerodynamics, increases the creepage distance, has excellent electrical properties, and has better anti-pollution performance of the insulator. The width of the protrusion structures 14 on both sides at the center of gravity of the umbrella cover 15 is taken into account for clamping the insulating operating rod, which is convenient for single-pole operation of the insulating rod during non-power-off operations.

[0028] A further improvement is that the tail hardware 17 consists of a crimping partition 22 and a fixed partition 19, the crimping partition 22 includes a cylindrical connecting seat 21, a hardware connecting groove 23 arranged at one end of the connecting seat 21, and the fixed partition 19 includes a connecting screw 18 arranged at the other end of the hardware connecting groove 23, and a connecting nut 20 arranged on the connecting screw 18. The tail hardware 17 is crimped and connected to the rod head cylinder of the core rod 16 through the hardware connecting groove 23. After the hardware connecting groove 23 is crimped with the core rod 16, the core rod 16 and part of the connecting seat 21 are wrapped by the umbrella cover 15 to better ensure the insulation and electrical properties of the core rod 16, and the fixed partition 19 is fixedly connected to the line crossarm.

[0029] The connecting seat 21 and the connecting screw 18 are integrally formed, which has higher firmness. The rod head cylinder of the core rod 16 is inserted into the hardware connecting groove 23 and then crimped and connected. The operation between the core rod 16 is simple, the firmness is good, the overall structure is simple, and when connected to the line crossarm, the entire composite jumper insulator can be fastened to the line crossarm directly through the cooperation of the connecting screw 18 and the connecting nut 20, which is convenient for installation.

[0030] A further improvement on any of the above embodiments is that the end fitting 13 includes a hanging wire fitting 2, a fitting crimping groove 4 provided at one end of the hanging wire fitting 2 for crimping connection with the rod head cylinder of the core rod 16, a hanging wire groove 1 provided on the hanging wire fitting 2 for clamping the wire, an integrated movable screw 7 with one end extending into the hanging wire groove 1 to press the wire, and a locking nut 6 provided on the integrated movable screw 7. After the fitting crimping groove 4 is crimped with the core rod 16, the core rod 16 and part of the hanging wire fitting 2 are wrapped by the umbrella sleeve 15 to better ensure the insulation performance and electrical performance of the jumper insulator, and the integrated movable screw 7 is locked on the hanging wire fitting 2 by the locking nut 6.

[0031] One side of the hanging wire fitting 2 is hollow, forming a fitting crimping groove 4, and the hanging wire fitting 2 is crimped with the rod head cylinder of the core rod 16 through the fitting crimping groove 4 at one end thereof. After the fitting crimping groove 4 is crimped with the rod head cylinder of the core rod 16, the core rod 16 and part of the hanging wire fitting 2 are wrapped by the umbrella sleeve 15 to better ensure the insulation performance and electrical performance of the jumper insulator. The size of the fitting crimping groove 4 can be adjusted accordingly according to the size of the core rod 16, and one end of the integrated movable screw 7 is extended from the outside of the hanging wire fitting 2. The outer end of the integrated movable screw 7 can be moved forward and backward by rotating the outer end of the integrated movable screw 7. One side of the wire hanging trough 1 on the wire hanging hardware 2 is an open structure, which can allow the wire to be inserted into the inside from the open end. When the wire is connected through the end hardware 13, after the wire is inserted into the wire hanging trough 1, the wire can be pressed and fixed in the wire hanging trough 1 by rotating the integrated movable screw 7, thereby realizing connection and fixing. The operation is simple and convenient, and after clamping, by rotating the wire hanging hardware After the locking nut 6 on the outside of 2 is fitted with it, the integrated movable screw 7 can be locked on the hanging wire fitting 2, which better enhances the stability of the screw. The integrated movable screw 7 is matched with the hanging wire trough 1, which reduces the technical requirements for operators, improves the efficiency and safety of wiring and maintenance work, and is suitable for fixing wires in multiple scenarios. The bolt quick-install wire fixing fixture is used to replace the problems of wire oxidation, irregular binding, and inconvenience for insulating rod operation caused by the original insulator wire binding fixation, thereby realizing the function of fixing the wire. It has the characteristics of simple operation, light weight, compact structure, safe and reliable operation, etc. At the same time, it reduces the technical requirements for operators, improves the working efficiency, is conducive to the convenience of non-stop operation and the operation and quick tightening of the insulating rod during non-stop operation, is easy to use and safe to use, has reliable performance, reduces the later maintenance cost, and enhances the power supply reliability of the distribution line, thereby further improving the convenience, economy and safety of construction operations.

[0032] A further improvement is that an adjustment hole 9 is provided on the wire hanging fitting 2 on one side of the wire hanging trough 1, and the integrated movable screw 7 includes a pressure plate 5 arranged in the wire hanging trough 1 and a hexagonal bolt 8 arranged on the adjustment hole 9, the pressure plate 5 is arranged at the front end of the hexagonal bolt 8, and a wire clamping area 3 with adjustable width is formed between the pressure plate 5 and the wire hanging trough 1, and the pressure plate 5 moves forward and backward by rotating the hexagonal bolt 8.

[0033] When the wire is fixed in the wire hanging trough 1 by the integrated movable screw 7, one end of the hexagonal bolt 8 passes through the adjustment hole 9 and enters the wire hanging trough 1, and then the pressure plate 5 is fixed to the hexagonal bolt 8 at the inserted end. After the hexagonal bolt 8 is rotated in the forward and reverse directions, the pressure plate 5 can be moved forward and backward. The forward and backward movement of the pressure plate 5 can realize the adjustment of the wire clamping area 3 between the pressure plate 5 and the wire hanging trough 1, so that the clamping of the wire has been loosened, and the pressure plate 5 can be adjusted accordingly according to the wire diameter of the wire.

[0034] As a further improvement, a stainless steel nut 10 is embedded in the adjusting hole 9 , and the hexagonal bolt 8 is threadedly screwed onto the stainless steel nut 10 .

[0035] A stainless steel nut 10 is embedded in the adjustment hole 9 on one side of the wire hanging trough 1, and the hexagonal bolt 8 is screwed on the stainless steel nut 10 through a thread, which can better fix the integrated movable screw 7 and ensure the stability of the line. The stainless steel nut 10 can ensure stability and wear resistance in long-term work, and can better help tighten the wire when the hexagonal bolt 8 is tightened, so that the wire is not easy to fall off from the wire hanging trough 1.

[0036] Meanwhile, a reverse threaded hole 11 is provided at the front end of the hexagonal bolt 8 , and a positioning bolt 12 is provided on the reverse threaded hole 11 . The pressure plate 5 is fixed in the reverse threaded hole 11 by the positioning bolt 12 .

[0037] The front end of the hexagonal bolt 8 is reverse threaded, and the pressure plate 5 is fixed in the reverse threaded hole 11 by the positioning bolt 12, which can stabilize the pressure plate 5 when the positioning bolt 12 is tightened and is not easy to fall off, thereby ensuring that the pressure plate 5 can better fix the wire in the wire hanging trough 1.

[0038] A further improvement is that both ends of the wire hanging trough 1 are arc-shaped surfaces, the clamping surface of the pressure plate 5 is designed with a full R angle, and the wire clamping area 3 forms an arc-shaped clamping area with both ends concave outward through the clamping surface of the pressure plate 5 and one end surface of the wire hanging trough 1.

[0039] Both ends of the wire hanging trough 1 are rounded to form a waist-shaped interface hole result, and the clamping surface of the pressure plate 5 is designed with a full R angle, so that the wire hanging trough 1 can be combined with the pressure plate 5 on the integrated movable screw 7. The curvature design of the pressure plate 5 takes into account the center of gravity and stability, and can better stabilize the wire in the wire hanging trough 1. The wire hanging hardware 2 is made of aluminum alloy, and the wire hanging hardware 2 is made of aluminum alloy. At the same time, a lightweight design is adopted to reduce its own weight, reducing the load-bearing capacity of the poles and insulators, making the structure more stable and the mechanical strength higher. The locking nut 6 is a hot-dip galvanized nut, and the locking nut 6 is a hot-dip galvanized nut, which can be further stabilized after the hexagonal bolt 8 is tightened. The operation is simple, which greatly improves the work efficiency of the operator.

[0040] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A bolt-fixed composite jumper insulator for non-stop operation, characterized in that: It includes a core rod, an umbrella sleeve, an end fitting and a tail fitting. The tail fitting and the end fitting are connected to the core rod through crimping. The umbrella sleeve is attached to the surface of the core rod, the end fitting and the tail fitting through a coupling agent. The core rod and the exposed metal parts of the crimping area on the end fitting and the tail fitting are wrapped inside by the umbrella sleeve. The core rod adopts an epoxy resin glass fiber solid drawing rod. The core rod is impregnated with resin by glass fiber and continuous reinforcement material and then pulled and extruded into a long cylindrical structure through a molding die. The end fitting It includes a hanging wire fitting, a fitting crimping groove provided at one end of the hanging wire fitting for crimping connection with the rod head cylinder of the core rod, a hanging wire groove provided on the hanging wire fitting for clamping the wire, an integrated movable screw with one end extending into the hanging wire groove to press the wire, and a locking nut provided on the integrated movable screw. After the fitting crimping groove is crimped with the core rod, the core rod and part of the hanging wire fitting are wrapped by the umbrella sleeve to better ensure the insulation performance and electrical performance of the jumper insulator, and the integrated movable screw is locked on the hanging wire fitting by the locking nut.

2. The bolt-fixed composite jumper insulator for non-stop operation according to claim 1, characterized in that: The umbrella cover is made of silicone rubber vulcanized at high temperature to form a plurality of annular protrusion structures, and the protrusion structures are located at the center of gravity of both sides of the umbrella cover.

3. The bolt-fixed composite jumper insulator for non-stop operation according to claim 2 is characterized in that: The tail hardware is composed of a crimping partition and a fixed partition. The crimping partition includes a cylindrical connecting seat and a hardware connecting groove arranged at one end of the connecting seat. The fixed partition includes a connecting screw arranged at the other end of the hardware connecting groove and a connecting nut arranged on the connecting screw. The tail hardware is crimped and connected to the rod head cylinder of the core rod through the hardware connecting groove. After the hardware connecting groove is crimped with the core rod, the core rod and part of the connecting seat are wrapped by the umbrella cover to better ensure the insulation and electrical properties of the core rod. The fixed partition is fixedly connected to the line crossarm.

4. The bolt-fixed composite jumper insulator for non-stop operation according to claim 1, characterized in that: An adjustment hole is provided on the wire hanging fitting on one side of the wire hanging trough, and the integrated movable screw includes a pressure plate arranged in the wire hanging trough and a hexagonal bolt arranged on the adjustment hole, the pressure plate is arranged at the front end of the hexagonal bolt, and a wire clamping area with adjustable width is formed between the pressure plate and the wire hanging trough, and the pressure plate moves back and forth by rotating the hexagonal bolt.

5. The bolt-fixed composite jumper insulator for non-stop operation according to claim 4, characterized in that: A stainless steel nut is embedded in the adjusting hole, and the hexagonal bolt is threadedly screwed onto the stainless steel nut.

6. The bolt-fixed composite jumper insulator for non-stop operation according to claim 4, characterized in that: A reverse threaded hole is provided at the front end of the hexagonal bolt, a positioning bolt is provided on the reverse threaded hole, and the pressure plate is fixed in the reverse threaded hole by the positioning bolt.

7. The bolt-fixed composite jumper insulator for non-stop operation according to claim 4, characterized in that: The two ends of the wire hanging trough are arc-shaped surfaces, the clamping surface of the pressure plate is designed with a full R angle, and the wire clamping area forms an arc-shaped clamping area with both ends concave outward through the clamping surface of the pressure plate and one end surface of the wire hanging trough.

8. The bolt-fixed composite jumper insulator for non-stop operation according to claim 1, characterized in that: The locking nut is a hot-dip galvanized nut, and the wire hanging fitting is made of aluminum alloy.

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