CN218848284U - Wire connector for circuit breaker characteristic test - Google Patents

Abstract

The utility model provides a connector for circuit breaker characteristic test, is including being used for with terminal row upper end correspond terminal screw butt's binding post, installation diaphragm and be used for with the fixing device on the terminal row is fixed to the installation diaphragm. The wiring pins are two, the distance between the wiring pins is adjustable, each wiring pin comprises two cylindrical rods and a first spring connected between the two cylindrical rods, and the cylindrical rod at the upper end is provided with a radial through hole capable of being provided with a positioning bolt; the middle part of the top end of the mounting transverse plate is provided with two waist-shaped holes I which are used for mounting two wiring pins side by side, the middle part of the side end of the mounting transverse plate is provided with two waist-shaped holes II which can penetrate through screw parts of positioning bolts, the waist-shaped holes I correspond to the waist-shaped holes II one to one, and the wiring pins are fixed through positioning bolts and nuts arranged in the corresponding waist-shaped holes II and the radial through holes after vertically penetrating through the corresponding waist-shaped holes I; the utility model discloses can reduce the cost of labor, improve economic benefits, experimental success rate simultaneously.

Description

A connector for circuit breaker characteristic test

technical field

The utility model relates to the technical field of equipment for testing electrical equipment, in particular to a connector used for characteristic testing of circuit breakers.

Background technique

The high-voltage circuit breakers in 110kV and 220kV substations need to carry out regular switch characteristic tests. The switch characteristic test is used to test the opening and closing speed of the switch, the opening and closing time, the degree of different phases of opening and closing, and the action of the opening and closing coil Voltage and other data, which directly affect the closing and breaking performance of the circuit breaker. Only by ensuring proper opening and closing speeds can the circuit breaker give full play to its ability to break current and avoid contact point wear, burning, fuel injection, and even explosion caused by pre-breakdown during closing.

Before the test, the wiring needs to be on the high-voltage circuit breaker control terminal block in the terminal box, find the terminal screw corresponding to the lead wire that controls the opening and closing of the circuit breaker, and connect the control line of the test instrument to the corresponding terminal screw on the terminal block to control the switch. However, the control wires connected to the terminal block need to be manually pushed to the corresponding position on the terminal block. This method not only requires an additional staff member, but also tends to loosen the connection when manually connecting the terminal block, resulting in test failure. Test again. Wiring before the test can also clamp the control line of the test instrument to the corresponding terminal line removed from the terminal block, but removing the terminal line is not only time-consuming and laborious, but also prone to errors during restoration.

A plug-in device disclosed in the prior art includes a cable terminal block, a terminal, pins for plugging into the terminal to realize connection, and an elastic plug-in piece. The elastic plug-in piece includes a bottom plate, vertically A connecting rod passing through the bottom plate and connected to the pins located below the bottom plate, a spring sleeved on the connecting rod, a limit block on the opposite side to the spring, and elastic clips extending downward from both sides of the bottom plate and bending inward The holding block, the spring is configured to properly move the pin downward when the compressed state is converted to the natural state, and the pin is connected to the cable through the connecting rod. However, the position of the pins of the device is fixed and cannot be adjusted, so that the device is only suitable for one type of terminal block measurement, and the scope of application is small. Moreover, during the test process, the circuit breaker will experience large mechanical vibrations, which will cause the elastic connectors to loosen, resulting in test failure.

Contents of the invention

The purpose of the utility model is to solve the shortcomings of the above-mentioned prior art, thereby providing a connector for circuit breaker characteristic test, reducing labor costs, improving economic benefits, and at the same time test success rate.

A connector for a circuit breaker characteristic test, comprising:

A connecting pin used to abut against the corresponding terminal screw on the upper end of the terminal row; there are two connecting pins, and the distance between them is adjustable. The connecting pin includes two cylindrical rods and is connected between the two cylindrical rods The spring one, the cylindrical rod at the upper end has a radial through hole that can be installed with a positioning bolt;

Install the horizontal plate; there are two waist-shaped holes side by side for installing the two wiring pins in the middle of the top of the installation horizontal plate, and there are two waist-shaped holes in the middle of the side end of the installation horizontal plate that can pass through the screw part of the positioning bolt 2. Waist-shaped hole 1 corresponds to waist-shaped hole 2 one-to-one. After the wiring pin passes through the corresponding waist-shaped hole 1 vertically, it is fixed by positioning bolts and nuts installed in the corresponding waist-shaped hole 2 and the radial through hole. ;

and a fixing device for fixing the installation horizontal plate on the terminal block.

The fixing device includes two fixing clip bodies symmetrically arranged at both ends of the terminal row and a connecting plate for connecting the two fixing clip bodies, and the connecting plate is connected to the upper ends of the two fixing clip bodies.

The threaded through hole at the bottom of the fixing clamp body is provided with a fixing screw that can bear against the side wall of the terminal row.

There is a stepped hole on the upper part of each of the fixing clips, and the stepped hole includes a large hole at the upper end and a small hole at the lower end. The inner wall of the small hole has internal threads that cooperate with the fastening bolts. There is a relief through hole, and two fastening bolts pass through the two relief through holes of the mounting horizontal plate in sequence from top to bottom, and then threadedly connect with the step holes on the corresponding fixing clip body.

The fastening bolt is covered with a spring two, and one end of the spring two is against the bottom of the large hole, and the other end is against the lower end surface of the mounting horizontal plate.

Both the fixing clip body and the connecting plate are made of polyethylene epoxy resin material.

The lower end of the connecting pin is a cone whose outer diameter gradually decreases from top to bottom.

The two cylindrical rods that make up the terminal pin, the spring one and the lower cone are made of externally silver-plated stainless steel.

Compared with the prior art, the utility model does not require staff to manually fix the wiring terminals on the job site, and can also keep a certain safe distance between the staff and the terminal box while realizing single-person operation, and the staff who operate the instrument can improve their own safety. guardianship.

The utility model can reduce the investment of one test operator, greatly reduce the labor cost, and effectively improve the economic benefit.

The utility model has firm installation and can effectively reduce the failure rate of the test.

Description of drawings

Fig. 1 is the use state figure of the utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is a partial sectional view of the utility model.

Detailed ways

The technical solutions in the embodiments of the utility model are now clearly and completely described in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, only schematically illustrating the basic structure of the utility model.

In Fig. 1 and Fig. 2, the wiring pin 3 used for docking with the two terminal screws 4 on the terminal block 1 is fixed on the mounting horizontal plate 16, and there are two side-by-side waist-shaped holes 8 on the top of the mounting horizontal plate 16, The two waist-shaped holes-8 are respectively used to pass through the connecting needles 3, and the two connecting needles 3 can move laterally in the waist-shaped holes-8, and then adjust the distance between the two connecting needles 3, so that the switching characteristics of the present application The quick wiring device for the test is suitable for docking terminal blocks of different styles. The terminal pin 3 includes two cylindrical rods and a spring 5 connected between the two cylindrical rods. There are two waist-shaped holes 9 corresponding to the waist-shaped holes 1-8 in the middle of the side of the installation horizontal plate 6 side by side. After the wiring pin 3 passes through the corresponding waist-shaped hole 1-8 vertically, the positioning bolts 7 are passed through in turn. Mount the nut 10 behind the corresponding waist-shaped hole 9 and the radial through hole to fix, so as to realize the positioning and fixing of the connecting pin 3. The connecting pin 3 includes two cylindrical rods and a spring 5 connected between the two cylindrical rods. The lower end of the connecting pin 3 is a cone whose outer diameter gradually decreases from top to bottom, forming the two cylindrical rods of the connecting pin 3. The rod, spring one 5 and the lower cone are all made of external silver-plated stainless steel, which has good wire performance. The two wiring pins 3 are respectively connected to the two control lines of the switch special effect tester, and the control lines can be directly welded. At the upper end of the two terminal pins 3. The fixing device is used to fix the mounting horizontal plate 6 on the terminal block 1. The fixing device includes two fixing clip bodies 2 and a connecting plate 11 connecting the two fixing clip bodies 2. The connecting plate 11 is connected to the two fixing clip bodies 2. upper end. The two fixing clips 2 are symmetrically arranged at both ends of the terminal block 1, and the bottom of the fixing clip 2 is provided with a threaded through hole, and a fixing screw 12 whose top can bear against the side wall of the terminal block 1 is installed in the threaded through hole, and the connection is reliable. , will not cause test failure due to large mechanical vibration and loosening. Both the fixing clip body 2 and the connecting plate 11 are made of polyethylene epoxy resin material with good insulation properties.

In Fig. 3, step holes 17 are provided on the two fixing clips 2, the small holes of the step holes 17 are located at the lower end of the large holes, and the inner walls of the small holes are provided with internal threads, and the two ends of the horizontal plate 6 are installed There are relief through holes at the top, and two fastening bolts 16 pass through the two relief through holes of the mounting horizontal plate 6 from top to bottom and are threadedly connected with the step holes 17 on the corresponding fixed clip body 2 . Tightening bolt 16 overcoat has spring two 18, and spring two 18 one end and the big hole portion hole bottom of step hole 17 offset, and the other end offsets with installation horizontal plate 6 lower end faces.

After the fastening bolt 16 connects the mounting horizontal plate 6 and the two fixing clamp bodies 2 together, the first spring 5 and the second spring 18 are in a compressed state.

Claims (8)

1. The utility model provides a connector for circuit breaker characteristic test which characterized in that: the method comprises the following steps:

the wiring pin (3) is used for being abutted against the corresponding terminal screw (4) at the upper end of the terminal row (1); the wiring pins (3) are two, the distance between the wiring pins is adjustable, each wiring pin (3) comprises two cylindrical rods and a first spring (5) connected between the two cylindrical rods, and the cylindrical rod at the upper end is provided with a radial through hole capable of being provided with a positioning bolt (7);

installing a transverse plate (6); the middle part of the top end of the mounting transverse plate (6) is provided with two waist-shaped holes I (8) for mounting the two wiring pins (3), the two waist-shaped holes I (8) are arranged side by side, the middle part of the side end of the mounting transverse plate (6) is also provided with two waist-shaped holes II (9) capable of penetrating through screw parts of the positioning bolts (7), the two waist-shaped holes II (9) are arranged side by side, the waist-shaped holes I (8) correspond to the waist-shaped holes II (9) one by one, and the wiring pins (3) are fixed through the positioning bolts (7) and nuts (10) arranged in the corresponding waist-shaped holes II (9) and the radial through holes after vertically penetrating through the corresponding waist-shaped holes I (8);

and a fixing device for fixing the mounting transverse plate (6) on the terminal strip.

2. The wire connector for circuit breaker characteristic test according to claim 1, wherein: the fixing device comprises two fixing clamp bodies (2) symmetrically arranged at two ends of the terminal strip (1) and a connecting plate (11) used for connecting the two fixing clamp bodies (2), and the connecting plate (11) is connected to the upper end portions of the two fixing clamp bodies (2).

3. The wire connector for circuit breaker characteristic test according to claim 2, wherein: and a fixing screw (12) which can abut against the side wall of the terminal row (1) is arranged in a threaded through hole at the bottom of the fixing clamp body (2).

4. The wire connector for circuit breaker characteristic test according to claim 2 or 3, characterized in that: every there is step hole (17) fixed clamp (2) upper portion, and step hole (17) are including being located the big hole portion of upper end and being located the aperture portion of lower extreme, and aperture portion inner wall has the internal thread with fastening bolt (16) complex, and installation diaphragm (6) both ends have a through-hole of stepping down respectively, and two fastening bolt (16) pass two of installation diaphragm (6) from top to bottom in proper order and step hole (17) threaded connection on the corresponding fixed clamp (2) behind the through-hole of stepping down.

5. The wire connector for circuit breaker characteristic test according to claim 4, wherein: and a second spring (18) is sleeved outside the fastening bolt (16), one end of the second spring (18) is abutted against the bottom of the large hole part, and the other end of the second spring (18) is abutted against the lower end face of the mounting transverse plate (6).

6. The wire connector for circuit breaker characteristic test according to claim 1, 2, 3 or 5, characterized in that: the fixed clamp body (2) and the connecting plate (11) are both made of polyethylene epoxy resin materials.

7. The wire connector for circuit breaker characteristic test according to claim 1, wherein: the lower tip of connector pin (3) is the cone that external diameter reduces gradually from top to bottom.

8. The wire connector for circuit breaker characteristic test according to claim 1 or 7, characterized in that: the two cylindrical rods, the first spring (5) and the cone at the lower part which form the wiring pin (3) are all made of stainless steel materials with silver plated on the outer parts.

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