CN104897931A - Telescopic wiring device for high-altitude test - Google Patents

Abstract

A telescopic high-altitude test connector, the high-altitude wiring pliers include a clamp, a magnetic inner sleeve is installed under the screw rod, and bayonet pins are arranged on both sides of the magnetic inner sleeve; the connecting wire adopts multi-strand soft copper wire, multi-strand The upper end of the annealed copper wire is welded to the lower end of the copper nose, and a strip-shaped fixing clip is mounted on the back of the copper nose. The hole is set on the fastening bolt on the back of the upper side of the wiring clip, fastened with a nut, and the multi-strand annealed copper wire with the bar-shaped fixing clip is fixed and pasted on the lower back of the wiring clip with a fixed piece; the insulating operating rod includes the upper end The magnetic outer sleeve and the telescopic operating rod are provided with slots corresponding to the bayonet pins of the magnetic inner sleeve on both sides of the upper end of the magnetic outer sleeve. The invention can reduce climbing operations, improve work efficiency, overcome the problems of fewer team members and heavy work tasks at the technical level, improve the work efficiency of the team at the scientific level, and solve potential safety hazards in the work.

Description

Telescopic high-altitude test connector

technical field

The invention belongs to the field of electric power maintenance tools, and is a wiring device with a high safety factor.

Background technique

At present, the team of the power supply company has heavy work tasks and few team members. It is responsible for the installation, commissioning, overhaul and maintenance of all substation protection, telecontrol, communication, and direct current of all substations under the company's jurisdiction, covering almost all secondary substations. , Three times, communications and other equipment. Therefore, it is imminent to use scientific and technological means to improve work efficiency and save manpower and material resources. There are potential safety hazards in high-altitude test wiring: as a maintenance team, the automation team has a lot of pre-test, annual inspection, and maintenance work every year. When testing or overhauling electrical equipment that cannot be directly touched, team members are required to climb high for wiring. Especially for the primary equipment of 110kV substation, the height from the ground is high, when testing the wiring, it is necessary to use a ladder to climb the wiring. This way of working not only takes up manpower, but also has potential safety hazards. Effective measures must be taken to reduce climbing operations in order to improve work efficiency.

Contents of the invention

The object of the present invention is to overcome existing deficiencies, provide a kind of screw-type wiring pliers that can be reliably connected with the equipment, and the design and manufacture of the operating rod is simple and telescopic high-altitude test connector; it is applicable to various high-altitude test wiring.

In order to achieve the above object, the technical solution provided by the present invention is: a telescopic high-altitude test connector, which is characterized in that it includes high-altitude wiring pliers, insulating operating rods, and connecting wires; high-altitude wiring pliers include tightening clamps controlled by screw rotation The claw clamp is equipped with a magnetic inner sleeve under the screw rod, and there are bayonet pins on both sides of the magnetic inner sleeve; the connecting wire is made of multi-strand annealed copper wire, and the upper end of the multi-strand annealed copper wire is welded to the lower end of the copper nose. On the back of the copper nose, there is a strip-shaped fixing clip. The lower clip of the fixing clip is wrapped around multiple soft copper wires and fixed with fastening screws. Fasten the bolts and fasten them with nuts, and fix the multi-strand annealed copper wires with strip-shaped fixing clips on the back of the lower side of the clamp with a fixed piece; the insulating operating rod includes a magnetic outer sleeve at the upper end and a telescopic operating rod. Both sides of the upper end of the magnetic outer sleeve are provided with slots corresponding to the bayonet pins of the magnetic inner sleeve.

The invention can reduce climbing operations, improve work efficiency, overcome the problems of fewer team members and heavy work tasks at the technical level, improve the work efficiency of the team at the scientific level, and solve potential safety hazards in the work. 1. Simple operation: by rotating the insulating operating lever at the lower end of the terminal clamp, it can be fixed on the high-altitude equipment cable, and the operation is simple. 2. Safe and reliable: After the wiring clip is installed, it will not loosen under non-operating conditions, and the clamping is reliable. 3. Strong overload capacity: it meets the short-time energizing current greater than 200A. 4. Easy to use: light in weight, reasonable in structural design and durable in use. 5. It is fixed by rotation, the operating rod is detachable, and a magnetic screw sleeve is installed on the top, which is easy to operate, firm and reliable in clamping, and is suitable for outdoor high-altitude cable wiring.

Description of drawings

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

In the figure: 1—fixing bolt; 2—copper nose; 3—fastening bolt; 4—fixing piece; 5—fixing clip; 6—multi-strand annealed copper wire; ——magnetic inner sleeve; 9—screw; 10—fixing bolt; 11—wiring clip; 12—clamp claw; 13—fastening screw; 14—card slot; 15—magnetic outer Sleeve; 16——telescopic operating rod.

Detailed ways

The present invention includes high-altitude wiring pliers, insulating operating rods, and connecting wires; high-altitude wiring pliers include a connecting clip 11 that is controlled by screw rod 9 to rotate and tighten clamp jaws 12, and a magnetic inner sleeve 8 is installed below the screw rod 9. Both sides of the sleeve 8 are provided with bayonet pins 7; the connecting wire is multi-strand annealed copper wire 6, the upper end of the multi-strand annealed copper wire 6 is welded to the lower end of the copper nose 2, and a strip-shaped fixing clip 5 is mounted on the back of the copper nose 2 , the lower clip of the fixing clip 5 is wrapped in the multi-strand annealed copper wire 6 and fixed with fastening screws 13, the upper hole of the copper nose 2 and the fixing clip 5 is set on the fastening bolt 3 on the upper back of the connecting clip, and the nuts Tighten, fix the multi-strand annealed copper wire 6 with the bar-shaped fixing clip 5 with the fixed piece 4 on the back side of the lower side of the clamp; Both sides of the upper end of the magnetic outer sleeve 15 are provided with locking grooves 14 corresponding to the bayonet pins 7 of the magnetic inner sleeve.

The selection of the telescopic operating rod mainly considers the following aspects:

① It is used together with high-altitude wiring pliers. It can be detached after the clamp is fixed, and the clamp must not fall off during the lifting and rotation process;

②Considering the different heights of 110kV and 35kV equipment, the operating lever should be flexible so that it can meet various work requirements.

③The telescopic operating rod 16 should have good insulation.

The magnetic outer sleeve at the top of the operating rod is a stainless steel sleeve to ensure the fixing of the wiring clamp during the lifting process, and at the same time, the rotating operating rod drives the screw rod 9 to complete the fixing of the high-altitude wiring clamp. In order to ensure that the magnetic inner sleeve at the bottom of the high-altitude wiring pliers is firmly connected to the operating rod, magnets are installed at the bottom of the magnetic inner sleeve and the magnetic outer sleeve to ensure that the wiring pliers will not fall off during the lifting process.

The telescopic operating rod is made of high-voltage epoxy glass fiber, which is light in weight and high in strength, and can be used safely within 220kV. The telescopic tube is 1.2M/section, and the two sections are connected by screws to ensure the reliability of the connection. The height of 4 meters can be connected by connecting two sections, which meets the test requirements of 110kV.

In order to ensure the reliability of the high-current laboratory, we choose 25㎜ ² multi-strand annealed copper wires as the upper and lower connecting wires. Referring to the interface mode of the test line of the high-current test equipment, we use the copper nose as the connection point for the lower test wiring, so that it can be directly connected to the test instrument and reduce the intermediate connection links.

We take the 110kV ring peak transformer CT polarity ratio test as the standard. When the connector is not used, each phase CT takes about 13.5 minutes. After using the connector, the test time of each group is 7.5 minutes, and the average time is saved by 44%.

Claims (4)

1. A telescopic high-altitude test connector, characterized in that: it includes high-altitude wiring pliers, an insulating operating rod, and a connecting wire; the high-altitude wiring pliers include a clamp ( 11), a magnetic inner sleeve (8) is installed under the screw rod (9), and bayonet pins (7) are arranged on both sides of the magnetic inner sleeve; The upper end of the copper wire is welded to the lower end of the copper nose (2), and a strip-shaped fixing clip (5) is mounted on the back of the copper nose. The lower clip of the fixing clip is wrapped around the multi-strand soft copper wire and fixed with fastening screws (13) , the copper nose and the upper hole of the fixing clip are set on the fastening bolt (3) on the upper back of the wiring clip, fastened with a nut, and the fixing piece (4) is fixed on the lower back of the wiring clip. The multi-strand annealed copper wire of the fixing clip; the insulated operating rod includes the upper magnetic outer sleeve (15) and the telescopic operating rod (16). pin corresponding to the slot (14). 2. A telescopic high-altitude test connector according to claim 1, characterized in that: the telescopic operating rod (16) is made of high-voltage resistant epoxy glass fiber. 3. A retractable high-altitude test connector according to claim 1 or 2, characterized in that magnets are installed at the bottom of the magnetic inner sleeve (8) and the magnetic outer sleeve (15). 4. A retractable high-altitude test connector according to claim 3, characterized in that: the magnetic outer sleeve (15) is a stainless steel sleeve.