Circuit breaker for improving reliability of power system

Abstract

The utility model discloses a circuit breaker used for improving the reliability of an electric power system, which comprises a circuit breaker body, connecting holes and a cable, the connecting holes are arranged at the upper part and the lower part of one side of the circuit breaker body, the inside of each connecting hole is rotatably connected with a threaded pin, and the surface of each threaded pin is in threaded connection with a threaded sleeve. The surface of the threaded sleeve is fixedly connected with an extrusion block slidably installed in the connecting hole, one end of the cable is inserted into the connecting hole and is extruded and fixed through the extrusion block, two carrying blocks are symmetrically and fixedly installed on the upper portion and the lower portion of one side of the circuit breaker body, and fixing pressing blocks are arranged on the two sides above the carrying blocks in a staggered mode; the cable is fixedly clamped between the carrying block and the two fixed pressing blocks. The circuit breaker is provided with a cable connection reinforcement protection structure, and can ensure that the connected cable does not loosen or fall off, thereby effectively ensuring the stability and reliability of the connection between the circuit breaker and the cable in a power system.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, in particular to a circuit breaker for improving the reliability of a power system. Background Art

[0002] A circuit breaker is a switching device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time; a circuit breaker can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. It can automatically cut off the circuit when they are seriously overloaded or have faults such as short circuit and undervoltage. Its function is equivalent to a combination of a fuse switch and an over- and under-temperature relay.

[0003] When the existing circuit breaker is connected to the cable, the cable is inserted into the connection port of the circuit breaker and then squeezed and fixed by bolts. This connection method lacks a protective structure, and the connection between the circuit breaker and the cable is prone to loosening or falling off, resulting in instability and unreliability of the power system. Therefore, improvements are needed to address the above problems. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit breaker for improving the reliability of a power system, comprising a circuit breaker body, a connecting hole and a cable, wherein the connecting hole is provided at the upper part and the lower part of one side of the circuit breaker body, the inside of the connecting hole is rotatably connected with a threaded pin, the surface of the threaded pin is threadedly connected with a threaded sleeve, the surface of the threaded sleeve is fixedly connected with an extrusion block slidably installed inside the connecting hole, one end of the cable is inserted into the inside of the connecting hole and is extruded and fixed by the extrusion block, the upper part and the lower part of one side of the circuit breaker body are symmetrically fixedly installed with two supporting blocks, the two sides above the supporting block are staggered with fixed pressing blocks, the cable is fixedly clamped between the supporting block and the two fixed pressing blocks, a first wire clamping arc groove is provided on one side of the supporting block facing the two fixed pressing blocks, a second wire clamping arc groove matching the first wire clamping arc groove is provided on one side of the two fixed pressing blocks facing the supporting block, and the cable is located between the inside of the first wire clamping arc groove and the inside of the two second wire clamping arc grooves.

[0005] Preferably, the ends of the two fixed pressure blocks facing the supporting block are fixedly installed with plug blocks, two adjustment cavities are symmetrically opened inside one side of the circuit breaker body, the two plug blocks on both sides of the supporting block are movable through the interior of the adjusting cavity, the lower parts of the opposite sides of the two supporting blocks inside the adjusting cavity are fixedly installed with the first right-angled triangle pressure blocks, the interior of the adjusting cavity is fixedly installed with a spring layer, and the end of the spring layer is fixedly installed with a reset plate that contacts the plug block.

[0006] Preferably, a connecting groove is opened on one side of the adjusting chamber, and a threaded shaft is rotatably connected inside the connecting groove. A sliding block is slidably installed between the connecting groove and the inside of the adjusting chamber, and the threaded shaft is threadedly connected to one end of the sliding block. Second right-angled triangular pressure blocks that match and contact the two first right-angled triangular pressure blocks are staggered and fixedly installed on both sides of the sliding block, and a worm gear is fixedly connected to one end of the threaded shaft.

[0007] Preferably, one end of the threaded pin extends into the interior of the connecting groove and is fixedly connected to a worm meshing with the worm gear, nut holes are provided at the top and bottom of the circuit breaker body, and the other end of the threaded pin extends into the interior of the nut hole and is fixedly connected to an adjusting nut.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: by providing a circuit breaker body, a connection hole, a cable, a threaded pin, a threaded sleeve, an extrusion block, a supporting block and a fixed pressure block, the circuit breaker has a cable connection reinforcement protection structure, which can ensure that the connected cables will not loosen or fall off, thereby effectively ensuring the stability and reliability of the connection between the circuit breaker and the cable in the power system. At the same time, the circuit breaker has a simple structural design, is convenient to use and operate, and the connection reinforcement of the cable is stable and reliable. Its performance can meet the reliability requirements of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0010] In the attached picture:

[0011] Figure 1 This is a schematic diagram of the structure of a circuit breaker for improving the reliability of a power system according to the utility model;

[0012] Figure 2 For this utility model Figure 1 A schematic cross-sectional structure diagram of;

[0013] Figure 3 For this utility model Figure 2 Schematic diagram of the local structure;

[0014] Figure 4 For this utility model Figure 1 A schematic diagram of a partial side view of an expanded structure;

[0015] Figure 5 For this utility model Figure 3 A partial side view structural schematic diagram of ;

[0016] In the figure: 1, circuit breaker body; 2, connecting hole; 3, cable; 4, threaded pin; 5, threaded sleeve; 6, extrusion block; 7, supporting block; 701, first wire clamping arc groove; 8, fixed pressure block; 801, second wire clamping arc groove; 9, plug block; 10, adjustment cavity; 11, first right-angle triangle pressure block; 12, spring layer; 13, reset plate; 14, connecting groove; 15, threaded shaft; 16, sliding block; 17, second right-angle triangle pressure block; 18, worm wheel; 19, worm; 20, nut hole; 21, adjusting nut. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] The circuit breaker has a cable connection reinforcement protection structure, which can ensure that the connected cables will not become loose or fall off, thereby effectively ensuring the stability and reliability of the connection between the circuit breaker and the cable in the power system.

[0019] Depend on Figures 1 to 5 The utility model includes a circuit breaker body 1, a connecting hole 2 and a cable 3. The connecting hole 2 is opened at the upper and lower parts of one side of the circuit breaker body 1. The inside of the connecting hole 2 is rotatably connected with a threaded pin 4. The surface of the threaded pin 4 is threadedly connected with a threaded sleeve 5. The surface of the threaded sleeve 5 is fixedly connected with an extrusion block 6 slidably installed inside the connecting hole 2. One end of the cable 3 is inserted into the inside of the connecting hole 2 and is extruded and fixed by the extrusion block 6. The upper and lower parts of one side of the circuit breaker body 1 are symmetrically fixed with two supports. Block 7, fixed pressure blocks 8 are staggered on both sides above the supporting block 7, the cable 3 is fixedly clamped between the supporting block 7 and the two fixed pressure blocks 8, a first wire clamping arc groove 701 is opened on the side of the supporting block 7 facing the two fixed pressure blocks 8, and a second wire clamping arc groove 801 matching the first wire clamping arc groove 701 is opened on the side of the two fixed pressure blocks 8 facing the supporting block 7, and the cable 3 is located between the first wire clamping arc groove 701 and the inside of the two second wire clamping arc grooves 801, so that the cable 3 can be effectively fixed.

[0020] The ends of the two fixed pressure blocks 8 facing the supporting block 7 are fixedly installed with plug blocks 9, and two adjustment chambers 10 are symmetrically opened inside one side of the circuit breaker body 1. The two plug blocks 9 on both sides of the supporting block 7 are movable and penetrate into the inside of the adjustment chamber 10. The lower parts of the two supporting blocks 7 on the opposite sides of the adjusting chamber 10 are fixedly installed with the first right-angle triangle pressure blocks 11, and the inside of the adjusting chamber 10 is fixedly installed with a spring layer 12, and the end of the spring layer 12 is fixedly installed with a reset plate 13 that contacts the plug block 9, so that the fixed pressure block 12 can be effectively adjusted. The block 8 is installed, a connecting groove 14 is opened on one side of the adjusting chamber 10, and a threaded shaft 15 is rotatably connected inside the connecting groove 14. A sliding block 16 is slidably installed between the connecting groove 14 and the inside of the adjusting chamber 10. The threaded shaft 15 is threadedly connected to one end of the sliding block 16. A second right-angle triangular pressure block 17 that matches and contacts the two first right-angle triangular pressure blocks 11 is staggered and fixedly installed on both sides of the sliding block 16. A worm gear 18 is fixedly connected to one end of the threaded shaft 15, so that the fixed pressure block 8 can be effectively adjusted;

[0021] When the cable 3 needs to be connected to the circuit breaker body 1, one end of the cable 3 is inserted into the inside of the connecting hole 2, and the cable 3 is located between the two fixed pressure blocks 8 and the supporting block 7, and then the sliding block 16 is moved toward the inside of the adjusting cavity 10 by rotating the threaded shaft 15. The movement of the sliding block 16 will drive the two second right-angled triangular pressure blocks 17 to move, and the movement of the two second right-angled triangular pressure blocks 17 will respectively squeeze the two first right-angled triangular pressure blocks 11, so that the two first right-angled triangular pressure blocks 11 drive the two plug blocks 9 to move and insert into the inside of the adjusting cavity 10, and the movement of the two plug blocks 9 will drive the two fixed pressure blocks 8 to move toward the supporting block 7, and then the cable 3 is clamped and fixed by the first wire clamping arc groove 701 and the two second wire clamping arc grooves 801; at the same time, the movement of the two plug blocks 9 will squeeze the reset plate 13 to compress the spring layer 12.

[0022] One end of the threaded pin 4 extends to the inside of the connecting groove 14 and is fixedly connected to a worm 19 meshing with the worm wheel 18. Nut holes 20 are provided at the top and bottom of the circuit breaker body 1. The other end of the threaded pin 4 extends to the inside of the nut hole 20 and is fixedly connected to an adjusting nut 21, so that effective adjustment can be performed.

[0023] By using a tool to rotate the adjusting nut 21, the rotation of the adjusting nut 21 will drive the threaded pin 4 to rotate, and the rotation of the threaded pin 4 will cause the threaded sleeve 5 to move on its surface and drive the extrusion block 6 to squeeze and clamp the end of the cable 3, thereby ensuring the stability of the connection; and the rotation of the threaded pin 4 will drive the worm 19 to rotate, thereby transmitting the worm wheel 18 and driving the threaded shaft 15 to rotate.

[0024] The circuit breaker has a simple structural design, is convenient to use and operate, and has stable and reliable cable connection reinforcement. Its performance can meet the reliability requirements of the power system.

Claims

1. A circuit breaker for improving the reliability of a power system, comprising a circuit breaker body (1), a connection hole (2) and a cable (3), characterized in that: The connection hole (2) is provided at the upper and lower parts of one side of the circuit breaker body (1); a threaded pin (4) is rotatably connected inside the connection hole (2); a threaded sleeve (5) is threadedly connected to the surface of the threaded pin (4); a squeeze block (6) slidably mounted inside the connection hole (2) is fixedly connected to the surface of the threaded sleeve (5); one end of the cable (3) is inserted into the inside of the connection hole (2) and is squeezed and fixed by the squeeze block (6); two supporting blocks (7) are symmetrically fixedly mounted on the upper and lower parts of one side of the circuit breaker body (1); fixed pressing blocks (8) are staggeredly arranged on both sides above the supporting blocks (7); and the cable (3) is fixedly clamped between the supporting block (7) and the two fixed pressing blocks (8).

2. A circuit breaker for improving the reliability of a power system according to claim 1, characterized in that: The supporting block (7) is provided with a first wire-holding arc groove (701) on one side facing the two fixed pressing blocks (8), and the two fixed pressing blocks (8) are provided with a second wire-holding arc groove (801) matching the first wire-holding arc groove (701) on one side facing the supporting block (7), and the cable (3) is located between the first wire-holding arc groove (701) and the inside of the two second wire-holding arc grooves (801).

3. A circuit breaker for improving the reliability of a power system according to claim 2, characterized in that: The ends of the two fixed pressure blocks (8) facing the supporting block (7) are fixedly mounted with plug blocks (9); two adjustment chambers (10) are symmetrically provided inside one side of the circuit breaker body (1); the two plug blocks (9) on both sides of the supporting block (7) are movable and penetrate into the inside of the adjustment chamber (10); the lower parts of the two supporting blocks (7) on the opposite sides inside the adjustment chamber (10) are fixedly mounted with a first right-angled triangular pressure block (11); the inside of the adjustment chamber (10) is fixedly mounted with a spring layer (12); and the end of the spring layer (12) is fixedly mounted with a reset plate (13) that contacts the plug block (9).

4. A circuit breaker for improving the reliability of a power system according to claim 3, characterized in that: A connecting groove (14) is provided on one side of the adjusting chamber (10), a threaded shaft (15) is rotatably connected inside the connecting groove (14), a sliding block (16) is slidably installed between the connecting groove (14) and the inside of the adjusting chamber (10), the threaded shaft (15) is threadedly connected to one end of the sliding block (16), second right-angle triangular pressure blocks (17) matching and contacting the two first right-angle triangular pressure blocks (11) are staggered and fixedly installed on both sides of the sliding block (16), and a worm gear (18) is fixedly connected to one end of the threaded shaft (15).

5. A circuit breaker for improving the reliability of a power system according to claim 4, characterized in that: One end of the threaded pin (4) extends to the inside of the connecting groove (14) and is fixedly connected to a worm (19) meshing with the worm wheel (18); nut holes (20) are provided at the top and bottom of the circuit breaker body (1); the other end of the threaded pin (4) extends to the inside of the nut hole (20) and is fixedly connected to an adjusting nut (21).

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