High-reliability circuit breaker mechanical structure

Abstract

The utility model discloses a high-reliability circuit breaker mechanical structure, which comprises a circuit breaker, the edges of the upper end and the lower end of the circuit breaker are respectively provided with an adjusting cavity, the middle parts of the upper end and the lower end of the circuit breaker are respectively provided with a telescopic groove, the telescopic groove and the adjusting cavity are respectively provided with a partition plate, and the partition plates are connected through a connecting rod. Adjusting discs are rotatably connected to the two side walls of the circuit breaker, the tail ends of the adjusting discs extend into the adjusting cavities and are connected with fluted discs, and adjusting plates are installed at the ends, located in the adjusting cavities, of the partition plates. According to the utility model, the two sides of the interior of the circuit breaker are respectively provided with the adjusting cavities, the partition plates are symmetrically arranged in the adjusting cavities, the extension length of the partition plates can be adjusted by rotating the adjusting disc, the adjusting length is controllable, the operation is simple and convenient, the electrical gap and creepage distance between single-pole circuit breakers are increased, and inter-phase short circuit caused by flashover during operation is prevented; interphase short circuit caused by dust and oil dirt accumulation is avoided, and conductive foreign matter is prevented from falling into exposed joints to form interphase short circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a mechanical structure of a high-reliability circuit breaker. Background Technique

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their application scope. The boundary between high and low voltages is relatively blurred. Generally, those above 3 kV are called high-voltage electrical appliances. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power supply lines and motors, etc. When they have serious overload, short circuit, undervoltage and other faults, they can automatically cut off the circuit. Its function is equivalent to the combination of a fuse switch and an over- and under-thermal relay, etc. Moreover, generally no parts need to be changed after interrupting the fault current. It has been widely used.

[0003] Due to the poor dielectric performance of existing circuit breakers, oil stains and dust in the equipment usage environment accumulate over time, which easily leads to phase breakdown between small circuit breakers. In addition, conductive foreign objects falling between small circuit breakers will also cause short circuits, directly affecting the safe and reliable operation of the equipment. For this reason, a mechanical structure of a high-reliability circuit breaker is proposed. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a mechanical structure of a high-reliability circuit breaker, which solves the problems that: due to the poor dielectric performance of existing circuit breakers, oil stains and dust in the equipment usage environment accumulate over time, which easily leads to phase breakdown between small circuit breakers. In addition, conductive foreign objects falling between small circuit breakers will also cause short circuits, directly affecting the safe and reliable operation of the equipment.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model is realized through the following technical solutions: A mechanical structure of a high-reliability circuit breaker includes a circuit breaker. Adjustment cavities are respectively opened at the edges of the upper and lower ends of the circuit breaker, and telescopic grooves are respectively opened in the middle parts of the upper and lower ends of the circuit breaker. Partition plates are respectively installed in the telescopic grooves and the adjustment cavities. A connecting rod is used to connect between the partition plates. Adjustment disks are rotatably connected to both side walls of the circuit breaker. The end of the adjustment disk extends into the adjustment cavity and is connected to a toothed disk. An adjustment plate is installed at the end of the partition plate located in the adjustment cavity. The adjustment plate is located on both sides of the toothed disk, and a number of teeth are evenly arranged on the surface of the adjustment plate. The teeth are meshed with the toothed disk.

[0008] As a further preferred embodiment of the present utility model, a chute is longitudinally provided on the surface of the circuit breaker, an adjusting column is slidably connected inside the chute, and the end of the adjusting column is fixedly connected to an adjusting plate.

[0009] As a further preferred embodiment of the present utility model, fixing holes are provided on the surfaces of the partition plates on both sides, through holes are provided on the surfaces of the partition plates in the middle, and the connecting rod passes through the through holes and is respectively connected to the fixing holes at both ends.

[0010] As a further preferred embodiment of the present utility model, a plug rod is installed at the end of the connecting rod, and the plug rod is embedded in the fixing hole.

[0011] As a further preferred embodiment of the present utility model, fixing grooves are provided on the surface of the plug rod, the fixing grooves are annular grooves, and rubber blocks are installed on the inner wall of the fixing hole and are inlaid and connected with the fixing grooves.

[0012] (III) Beneficial effects

[0013] The present utility model provides a mechanical structure of a circuit breaker with high reliability, having the following beneficial effects:

[0014] In the present utility model, adjusting cavities are respectively provided on both sides inside the circuit breaker, partition plates are symmetrically arranged in the adjusting cavities, and the partition plates can adjust the extending length by rotating the adjusting disk. The adjusting length is controllable, the operation is simple and convenient, the electrical clearance and creepage distance between single-pole circuit breakers are increased, arc flashing during operation causing phase-to-phase short circuit is prevented, phase-to-phase short circuit caused by the accumulation of dust and oil stains is avoided, and phase-to-phase short circuit caused by conductive foreign objects falling into the exposed connection parts is avoided. Description of the drawings

[0015] Figure 1 is the external structure diagram of the mechanical structure of the high-reliability circuit breaker described in the present utility model;

[0016] Figure 2 is the connection structure diagram of the adjusting plate and the gear disk described in the present utility model;

[0017] Figure 3 is the connection structure diagram of the partition plate and the connecting rod described in the present utility model;

[0018] Figure 4 is Figure 3 the enlarged view of A in

[0019] In the figure: 1, circuit breaker; 2, partition plate; 3, telescopic groove; 4, connecting rod; 5, adjusting disk; 6, adjusting column; 7, adjusting cavity; 8, chute; 9, adjusting plate; 10, teeth; 11, gear disk; 12, through hole; 13, fixing hole; 14, rubber block; 15, plug rod; 16, fixing groove. Specific implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the embodiments of the present utility model provide a technical solution: a mechanical structure of a highly reliable circuit breaker, including a circuit breaker 1. Adjustment cavities 7 are respectively opened at the edges of the upper and lower ends of the circuit breaker 1. Telescopic grooves 3 are respectively opened in the middle parts of the upper and lower ends of the circuit breaker 1. Partition plates 2 are respectively installed in the telescopic grooves 3 and the adjustment cavities 7. The partition plates 2 are connected by a connecting rod 4. Adjustment disks 5 are rotatably connected to the two side walls of the circuit breaker 1. The ends of the adjustment disks 5 extend into the adjustment cavity 7 and are connected to a toothed disk 11. An adjustment plate 9 is installed at the end of the partition plate 2 located in the adjustment cavity 7. The adjustment plate 9 is located on both sides of the toothed disk 11, and a plurality of teeth 10 are evenly arranged on the surface of the adjustment plate 9. The teeth 10 are meshed with the toothed disk 11. By rotating the adjustment disk 5, the internal toothed disk 11 is driven to rotate. After the toothed disk 11 rotates, it pushes the teeth 10 to drive the adjustment plate 9 to displace. During the displacement process, the partition plate 2 is driven, and the extending length of the partition plate 2 can be adjusted.

[0022] Further improved, a chute 8 is longitudinally opened on the surface of the circuit breaker 1. An adjustment column 6 is slidably connected inside the chute 8. The end of the adjustment column 6 is fixedly connected to the adjustment plate 9. The extending length can be known by observing the position of the adjustment column 6. The adjustment column 6 can also play a certain limiting role, and the adjustment column 6 can also be pushed to adjust the extending length of the partition plate 2.

[0023] Further improved, fixing holes 13 are opened on the surfaces of the partition plates 2 on both sides, and through holes 12 are opened on the surfaces of the partition plates 2 in the middle. The connecting rod 4 passes through the through hole 12 and is respectively connected to the fixing holes 13 at both ends. An insertion rod 15 is installed at the end of the connecting rod 4. The insertion rod 15 is embedded in the fixing hole 13. A fixing groove 16 is opened on the surface of the insertion rod 15. The fixing groove 16 is an annular groove. A rubber block 14 is installed on the inner wall of the fixing hole 13 and is inlaid and connected with the fixing groove 16. By adjusting the partition plates 2 on both sides, the partition plate 2 in the middle is driven to be adjusted. When it is not necessary to adjust the partition plate 2 in the middle, the connecting rod 4 can be disassembled. After the partition plates 2 on both sides are extended, the ends of the partition plates 2 are moved to both sides, and the connecting rod 4 can be disassembled.

[0024] Working principle: Use a tool to rotate the adjustment disk 5 to drive the inner gear disk 11. After the gear disk 11 rotates, it pushes the teeth 10 and drives the adjustment plate 9 to displace. The adjustment plate 9 drives the partition plate 2, and after the partition plate 2 displaces, it plays a role of separating and blocking. When the partition plates 2 on both sides move, they drive the middle partition plate 2 to move. In addition to rotating the adjustment disk 5 to adjust the partition plate 2, the partition plate 2 can also be adjusted by pushing the adjustment column 6. When it is not necessary to adjust the middle partition plate 2, the connecting rod 4 can be disassembled. After the partition plates 2 on both sides are extended, move the ends of the partition plates 2 to both sides and then disassemble the connecting rod 4.

[0025] 1. Circuit breaker; 2. Partition plate; 3. Telescopic groove; 4. Connecting rod; 5. Adjustment disk; 6. Adjustment column; 7. Adjustment cavity; 8. Sliding groove; 9. Adjustment plate; 10. Teeth; 11. Gear disk; 12. Through hole; 13. Fixed hole; 14. Rubber block; 15. Insert rod; 16. Fixed groove of the components of the present utility model are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods. The problem solved by the present utility model is that the existing circuit breaker 1 has poor dielectric performance, and the accumulation of oil and dust in the equipment use environment is likely to cause phase-to-phase breakdown of the miniature circuit breaker 1. In addition, the falling of conductive foreign objects between the phases of the miniature circuit breaker 1 will also cause a short circuit, directly affecting the safe and reliable operation of the equipment. Through the mutual combination of the above components, the present utility model respectively opens adjustment cavities 7 on both sides inside the circuit breaker 1. The partition plates 2 are symmetrically arranged in the adjustment cavities 7, and the extension length of the partition plates 2 can be adjusted by rotating the adjustment disk 5. The adjustment length is controllable, the operation is simple and convenient, the electrical clearance and creepage distance between single-pole circuit breakers 1 are increased, the phase-to-phase short circuit caused by arc flashing during operation is prevented, the phase-to-phase short circuit caused by the accumulation of dust and oil is avoided, and the phase-to-phase short circuit caused by conductive foreign objects falling into the exposed connection is avoided.

[0026] The above shows and describes the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0027] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high reliability circuit breaker mechanical structure, comprising a circuit breaker (1), characterized in that: An adjustment cavity (7) is respectively provided at the edges of the upper and lower ends of the circuit breaker (1); a telescopic slot (3) is respectively provided at the middle of the upper and lower ends of the circuit breaker (1); a partition (2) is respectively installed in the telescopic slot (3) and the adjustment cavity (7); the partitions (2) are connected by connecting rods (4); an adjustment disk (5) is rotatably connected to the two side walls of the circuit breaker (1); the end of the adjustment disk (5) extends into the adjustment cavity (7) and is connected to a toothed disk (11); an adjustment plate (9) is installed at the end of the partition (2) located in the adjustment cavity (7); the adjustment plate (9) is located on both sides of the toothed disk (11); and a plurality of teeth (10) are evenly arranged on the surface of the adjustment plate (9); the teeth (10) are meshedly connected with the toothed disk (11).

2. A high reliability circuit breaker mechanical structure according to claim 1, characterized in that: A sliding groove (8) is longitudinally provided on the surface of the circuit breaker (1), an adjusting column (6) is slidably connected inside the sliding groove (8), and the end of the adjusting column (6) is fixedly connected to the adjusting plate (9).

3. A high reliability circuit breaker mechanical structure according to claim 1, characterized in that: The surfaces of the partitions (2) at both sides are provided with fixing holes (13), and the surface of the partition (2) at the middle is provided with a through hole (12). The connecting rod (4) passes through the through hole (12) and has two ends respectively connected to the fixing holes (13).

4. A high reliability circuit breaker mechanical structure according to claim 1, characterized in that: An insert rod (15) is installed at the end of the connecting rod (4), and the insert rod (15) is embedded in the fixing hole (13).

5. A high reliability circuit breaker mechanical structure according to claim 4, characterized in that: The surface of the insert rod (15) is provided with a fixing groove (16), which is an annular groove. A rubber block (14) which is embedded and connected with the fixing groove (16) is installed on the inner wall of the fixing hole (13).

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