CN205426971U - Multi -functional retractable electric power high altitude test pincers - Google Patents

Abstract

The utility model belongs to the technical field of testing pliers, and discloses a multi-functional retractable electric high-altitude testing pliers. The end is provided with a female metal head, the male metal head matches the female metal head, and the current wire is built in the insulating rod. The rods are connected with each other, the tail end of the pincer rod is also provided with a female metal head, the top of the pincer rod is provided with an upper pincer head and a lower pincer head connected by a spring telescopic device, and the lower pincer head is connected with the upper end of the telescopic soft wire, and the telescopic soft wire The lower end of the wire is connected with the male metal head at the top of the insulating rod. The multi-functional retractable electric high-altitude test clamp has simplified personnel, eliminates hidden dangers of personal safety accidents, avoids equipment damage to people, and greatly improves the safe operation factor.

Description

Multifunctional retractable electric high-altitude test clamp

technical field

The utility model belongs to the technical field of testing pliers, in particular to a multifunctional retractable electric high-altitude testing pliers.

Background technique

Newly installed current transformers in newly built and renovated substations must undergo CT test transformation ratio up-current tests. During the testing process, the process of fixing the ascending streamline is very cumbersome, and often requires a lot of manpower and time, which seriously affects the work efficiency of this work and the personal safety of the staff.

Up-current tests often require copper wires with a large current-carrying capacity, generally above Φ50. The traditional up-current test method is that the construction personnel carry the ladder on the up-current line to the CT.PT interval. Due to the small space on the CT.PT interval, there is only room for one person, and the heavy current line is carried on it. It is extremely inconvenient to turn around and move. Accidents such as accidents such as the current wire accidentally hitting the porcelain bushing and toppling and smashing the porcelain bushing will occur if you are not careful. At least 5-6 people have to go to work in the substation every time. Since the test needs to be connected to the two ends of the "rheological" primary side for the up-current test wire, the height of the terminals L1, L2, P1, and P2 from the ground is generally 4-6 m. When working, use a single ladder or lift, and special personnel are required to support the ladder, pass the tools up and down, and one person goes up to connect the booster or booster line; there are also operating, recording and monitoring personnel at the working position, The safety belt could not find a suitable place to fix it. According to the State Grid Electric Power Safety Work Regulations, the safety belt for high-altitude operations is not allowed to be hung low and high, and it is forbidden to hang on moving or unstable objects; such as lightning arresters, circuit breakers, On supports such as isolating switches, current transformers, and voltage transformers. In addition, because the ladder is too high, people feel unstable in the air. Even after using the grounding wire to discharge, there are still sporadic induction of electric numbness, which creates a sense of fear psychologically. Therefore, it is very unsafe to work, and it is easy to cause personal safety Accident hazard.

Utility model content

The technical problem solved by the utility model is to provide a multi-functional telescopic electric high-altitude test clamp with simple structure and safe use.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the utility model is: comprising an insulating rod, the insulating rod is connected in multiple sections, the interior of the insulating rod is hollow, the top of the insulating rod is provided with a male metal head with external threads, and the insulating rod The tail end is provided with a female metal head with an internal thread, the male metal head matches the female metal head, the insulating rod has a built-in current wire, and the metal joints at both ends of the current wire are respectively fixed with the male metal head and the female metal head by pins. The top of the insulating rod is connected with the pincer rod, and the tail end of the pincer rod is also provided with a female metal head with internal thread, and the top of the pincer rod is provided with an upper pincer head and a lower pincer head connected by a spring expansion device. , the lower clamp head is connected with the upper end of the telescopic flexible wire, and the lower end of the telescopic flexible wire is connected with the male metal head at the top of the insulating rod.

Its additional technical features are: the upper pincer head and the lower pincer head are connected by metal wires;

The upper pincer head is provided with upper serrations, and the lower pincer head is provided with lower serrations;

The insulating poles are connected by 3 joints or 4 joints or more joints.

When using the multi-functional retractable electric high-altitude test pliers provided by the utility model, first insert the current wires with metal joints at both ends into the hollow insulating rod inside, and use pins to connect the metal joints at both ends of the current wires to the male metal joints respectively. The head and the female metal head are fixed, and then the multi-section connecting insulating rods are connected. The male metal head with external threads on the top of the last insulating rod is connected with the female metal head with internal threads at the end of the previous insulating rod. Together. Afterwards, connect the top of the first section of insulating rod with the tail end of the pliers head rod, the female metal head with internal thread at the end of the pliers head rod and the male metal head with external thread at the top of the first section of insulating rod The heads are connected together, the upper tong head and the lower tong head are connected by metal connecting wires, the lower tong head is connected to the upper end of the stretchable soft wire, and the lower end of the stretchable soft wire is connected to the male metal head on the top of the insulating rod. When performing the up-current test, hold the bottom section of the insulating rod, and bring the upper and lower clamps close to the device under test. The opening size of the upper and lower clamps depends on the size of the device under test. The rod control spring telescopic device is completed, so that the upper jaw and the lower jaw bite on the tested equipment, and the test can be carried out.

The utility model provides a multi-functional retractable electric high-altitude test clamp, the material of the insulating rod is resin material, and the withstand voltage is 1000V. The connection between the insulating rods of each section adopts the male and female head threaded connection, because the height of the terminals L1, L2, P1, and P2 of the high CT from the ground is generally 4-6 meters. In order to meet the experiments at different heights, the insulating rods are divided into 1.2m/section*4 section meters, and 50 square meters*1.2m current wires are built into each insulating rod. Considering the weight and current carrying problems of the current wires, the larger the cross-sectional area of the conductor, the better Well, you can choose 50 square multi-strand copper soft wires, which are light and durable. The metal joints at both ends of the built-in current wire and the outer insulating rod are fixed with pins, so that the built-in current wire and the outer insulating rod are reliably connected. The upper and lower pliers are designed in the olecranon style. The pliers have strong bite strength and a large contact area. The wiring is flexible and firm. It can clamp cylindrical aluminum stranded wires or rectangular aluminum bars. The pliers head is equipped with serrations, which can easily bite through the oxide layer of the equipment under test for reliable testing. The pincer head rod has a spring expansion device, and the flexible flexible wire is installed to connect reliably with the remaining rods, so as to conduct electricity reliably. The flexible flexible wire can be 50 square soft copper wires. The upper pliers head and the lower pliers head are connected by metal wires to make them more tightly connected, and the conduction is reliable and foolproof. At the end of the pole, a 1000A copper nose is drawn from the surface of the insulating pole to reliably connect with the current-raising equipment, so as to realize the current generation experiment. The nose and the rod are connected tightly as a whole and have good electrical conductivity. The newly added voltage line, in addition to the function of raising the current, can complete the production test that requires both current and voltage, such as contact resistance test and loop resistance test. Make the product function more powerful. It can withstand the test when the current of 700A passes through the pole for 40 seconds.

The utility model provides a multi-functional retractable electric high-altitude test clamp, which is simplified in terms of personnel during work, from the original 6 people to 2 people. Abandon the traditional tools on the equipment: single ladder or lift, seat belt, mobile seat belt retainer, eliminate the hidden danger of personal safety accidents, avoid the damage to the equipment to the human body, and greatly improve the safety operation factor.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model multi-functional retractable electric high-altitude test clamp.

detailed description

The structure and operating principle of the utility model's multifunctional retractable electric high-altitude test clamp will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model multifunctional retractable electric high-altitude test pliers includes a multi-section internal hollow insulating rod 1, the top of the insulating rod 1 is provided with a male metal head 2 with external threads, and the tail end of the insulating rod 1 is provided There is a female metal head 3 with an internal thread, the male metal head 2 matches the female metal head 3, the insulating rod 1 has a built-in current wire 4, and the metal joints 5 and 6 at both ends of the current wire 4 are respectively connected to the male metal head 2 through the pin 7 , the female metal head 3 is fixed, the top of the insulating rod 1 is connected with the pliers rod 8, the tail end of the pliers rod 8 is also provided with a female metal head 3 with internal threads, and the top of the pliers rod 8 is provided with a spring The upper pincer head 10 and the lower pincer head 11 connected by the telescopic device 9, the upper pincer head 10 is provided with upper serrations 12, the lower pincer head 11 is provided with lower serrations 13, and the upper pincer head 10 and the lower pincer head 11 are connected through a metal wire 14 Connected, the lower clamp head 11 is connected with the upper end of the telescopic soft wire 15, and the lower end of the telescopic soft wire 15 is connected with the male metal head 2 at the top of the insulating rod 1.

When using the multifunctional retractable electric high-altitude test pliers provided by the utility model, first insert the current wire 4 with metal joints 5 and 6 at both ends into the insulating rod 1 which is hollow inside, and use the pin 7 to connect the current wire 4 two The metal joints 5 and 6 at the end are respectively fixed with the male metal head 2 and the female metal head 3, and then the multi-section connecting insulating rod 1 is connected, and the male metal head 2 with external thread on the top of the last insulating rod 1 is connected with the previous one. The female metal head 3 with internal thread at the tail end of the insulating rod 1 is connected together. Thereafter, the top of the first section of insulating rod 1 is connected with the tail end of the pincer rod 8, and the female metal head 3 with internal thread at the tail end of the pincer rod 8 is connected with the top of the first section of insulating rod 1. The male metal head 2 of the external thread is connected together, and the upper clamp head 10 and the lower clamp head 11 are connected through the metal connecting wire 14, the lower clamp head 11 is connected with the upper end of the flexible flexible wire 15, and the lower end of the flexible flexible wire 15 is connected with the insulating rod The male metal head 2 on the top of 1 is connected. When performing the up-current test, hold the bottom section of the insulating rod 1, and bring the upper clamp head 10 and the lower clamp head 11 close to the device under test. The opening size of the upper clamp head 10 and the lower clamp head 11 depends on the size of the device under test. , by holding the insulating rod 1 to control the spring expansion device 9 to complete, so that the upper clamp head 10 and the lower clamp head 11 are engaged on the tested equipment, and the test work can be carried out.

The utility model provides the multifunctional retractable electric high-altitude test pliers, the material of the insulating rod 1 is resin material, and the withstand voltage is 1000V. The connection between the insulating rods of each section adopts the male and female threaded connection, because the height of the terminals L1, L2, P1, and P2 of the high CT from the ground is generally 4-6 meters. In order to meet the experiments at different heights, the insulating rod 1 is divided into 1.2 meters/section*4 section meters, and each section of the insulating rod 1 has a built-in current line 4 of 50 square meters*1.2 meters. Considering the weight and current carrying problem of the current line 4, the conductor transverse The larger the cross-sectional area, the better. You can choose 50 square multi-strand red copper soft wires, which are light and durable. The metal joints 5 and 6 at both ends of the built-in current wire 4 are fixed with the outer insulating rod 1 with pins 7, so that the built-in current wire 4 and the outer insulating rod 1 are reliably connected. The upper pliers 10 and the lower pliers 11 are olecranon-shaped. The pliers have a large bite strength and a large contact area, and the wiring is flexible and firm. They can clamp cylindrical aluminum stranded wires or rectangular parallelepiped aluminum bars. The pliers head is equipped with serrations, the upper pliers head 10 is provided with upper serrations 12, and the lower pliers head 11 is provided with lower serrations 13, which can easily bite through the oxide layer of the tested equipment for reliable testing. Clamp head bar 8 has spring telescopic device 9, installs telescopic flexible wire 15 and is reliably connected with remaining bar, thereby reliable electric conduction, telescopic flexible wire 15 can be 50 square annealed copper wires. The upper pliers 10 and the lower pliers 11 are connected by metal wires 14, so that they are more tightly connected, and the conduction is reliable and foolproof. At the end of the pole, a 1000A copper nose is led out from the surface of the insulating pole 1 for reliable connection with the current raising equipment, so as to realize the current generation experiment. The nose and the rod are connected tightly as a whole and have good electrical conductivity. The newly added voltage line, in addition to the function of raising the current, can complete the production test that requires both current and voltage, such as contact resistance test and loop resistance test. Make the product function more powerful. It can withstand the test when the current of 700A passes through the pole for 40 seconds.

The scope of protection of the utility model is not limited to the above-mentioned embodiments, as long as the structure is the same or similar to that of the utility model multi-function retractable electric high-altitude test clamp, it falls within the scope of the utility model protection.

Claims (4)

1. multifunction retractable formula electric power high-altitude test clamp, including insulating bar, it is characterized in that: described insulating bar more piece connects, the inner hollow of insulating bar, insulating bar top is provided with externally threaded public ferrule, insulating bar tail end is provided with the female mother metal head of band, public ferrule matches with mother metal head, insulating bar in-built electrical streamline, the metal joint at electric current line two ends is respectively by pin and public ferrule, mother metal head fixes, the top of described insulating bar is connected with binding clip bar, binding clip bar tail end is also equipped with carrying female mother metal head, the top of binding clip bar is provided with upper grip head and the lower pliers head that telescopic spring device is connected, lower pliers head is connected with flexible flexible circuit conductor upper end, flexible flexible circuit conductor lower end is connected with the public ferrule on insulating bar top.

Multifunction retractable formula electric power high-altitude test clamp the most according to claim 1, it is characterised in that: described upper grip head is connected by metal connecting line with lower pliers head.

Multifunction retractable formula electric power high-altitude test clamp the most according to claim 1, it is characterised in that: described upper grip head is provided with sawtooth, and lower pliers head is provided with lower sawtooth.

Multifunction retractable formula electric power high-altitude test clamp the most according to claim 1, it is characterised in that: described insulating bar 3 joint connects or 4 joints connect or more more piece connects.