A double-break circuit breaker

Abstract

The application relates to the field of garbage cleaning, in particular to a double-break circuit breaker which comprises upper and lower contact heads installed on a wall body and a conductor for electrically connecting the two, the upper contact head, the lower contact head and the conductor jointly form a circuit breaking assembly, upper and lower main shafts arranged in parallel are rotationally arranged on the wall body, one end of the upper contact head is connected with the upper main shaft through a crank, one end of the lower contact head is connected with the lower main shaft through a crank, the other end of the upper contact head is hingedly connected with the other end of the lower contact head, a pull rod is arranged between the upper main shaft and the lower main shaft, one end of the pull rod is connected with the upper main shaft through a crank, the other end of the pull rod is connected with the lower main shaft through a crank, and one of the upper main shaft and the lower main shaft is connected with a driving mechanism; the application aims at overcoming the defects of the prior art and provides the double-break circuit breaker, realizes the function of the double-break circuit breaker and has the effect of quickly extinguishing electric arc.

Description

Technical Field

[0001] This invention belongs to the field of circuit breakers, specifically relating to a double-break circuit breaker. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. A circuit breaker generally consists of a contact system, an arc-extinguishing system, a drive mechanism, and a housing. The drive mechanism is used to perform the opening and closing operations of the circuit breaker and to keep the circuit breaker in the closed position.

[0003] Most large circuit breakers currently on the market are single-break circuit breakers, meaning there is only one breaking point per main circuit. While single-break circuit breakers have a simple structure, the limited number of breaking points makes it difficult to extinguish the arc when encountering large short-circuit currents, especially in DC situations. Because DC arcs often lack a zero-crossing point, the short-circuit current cannot be broken, leading to irreparable losses. Double-break circuit breakers, which include two breaking points in a single main circuit, significantly improve the breaking capacity. Traditional double-break circuit breakers have complex mechanisms and manufacturing processes, hindering large-scale use. This invention employs an extremely simple mechanical structure to achieve both the functionality of a double-break circuit breaker and the effect of rapid arc extinguishing. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a dual-break circuit breaker. Based on a mature drive mechanism, it realizes the function of a dual-break circuit breaker, which helps to quickly extinguish electric arcs.

[0005] Therefore, the technical solution adopted by this invention patent is as follows: a double-break circuit breaker, including an upper contact and a lower contact mounted on a wall, and a conductor for electrically connecting the two. The upper contact, the lower contact, and the conductor together form a circuit breaking assembly. An upper main shaft and a lower main shaft are rotatably arranged in parallel on the wall. One end of the upper contact is connected to the crank of the upper main shaft, and one end of the lower contact is connected to the crank of the lower main shaft. The other end of the upper contact is hinged to the other end of the lower contact. A pull rod is provided between the upper main shaft and the lower main shaft. One end of the pull rod is connected to the crank of the upper main shaft, and the other end of the pull rod is hinged to the crank of the lower main shaft. One end is connected to the lower main shaft crank. One of the upper and lower main shafts is connected to a drive mechanism. The drive mechanism is used to drive the upper or lower main shaft to rotate. When one of the upper and lower main shafts rotates, the other rotates in the opposite direction. The upper main shaft drives the upper contact to rotate and separate from or contact the conductor. The lower main shaft drives the lower contact to rotate and separate from or contact the conductor. The circuit breaker assembly is divided into a closed state and an open state. In the closed state, both the upper and lower contacts are in contact with the conductor. In the open state, both the upper and lower contacts are separated from the conductor.

[0006] Compared with the prior art, the advantages of the present invention are:

[0007] When the present invention requires switching between the closed and open states, the driving mechanism is used to drive the upper or lower main shaft to rotate. When one of the upper and lower main shafts rotates, the other rotates in the opposite direction. The upper main shaft drives the upper contact to rotate and separate or contact the conductor, and the lower main shaft drives the lower contact to rotate and separate or contact the conductor, thereby realizing the switching between the closed and open states of the circuit breaker component.

[0008] Furthermore, a pivot shaft is provided between the other end of the upper contact and the other end of the lower contact to enable them to be hinged. The pivot shaft is installed on the wall, and the hinge between the other end of the upper contact and the lower contact is achieved by setting the pivot shaft.

[0009] Furthermore, the wall is provided with a semi-circular mounting bracket, which is detachably connected to a support. The support is provided with a semi-circular frame, and the semi-circular frame and the semi-circular mounting bracket together form a rotating groove. The pivot shaft is rotatably installed in the rotating groove. The pivot shaft is installed through the cooperation of the semi-circular frame and the semi-circular mounting bracket.

[0010] Furthermore, an upper cantilever is provided between the upper spindle and the tie rod to increase the straight distance between their hinge center and the axis of the upper spindle, and a lower cantilever is provided between the lower spindle and the tie rod to increase the straight distance between their hinge center and the axis of the lower spindle. The upper and lower cantilever are used to connect the two ends of the tie rod to the cranks of the upper and lower spindles.

[0011] Furthermore, an upper connecting piece is provided between one end of the upper contact and the upper main shaft. One end of the upper connecting piece is fixedly connected to the upper main shaft, and the other end of the upper connecting piece is hinged to one end of the upper contact. A lower connecting piece is provided between one end of the lower contact and the lower main shaft. One end of the lower connecting piece is fixedly connected to the lower main shaft, and the other end of the lower connecting piece is hinged to one end of the lower contact. The upper connecting piece and the lower connecting piece enable crank connection between the upper main shaft and the upper contact, and crank connection between the lower contact and the lower main shaft.

[0012] Furthermore, at least two circuit breaker components are provided, and multiple circuit breaker components are arranged in parallel. Multiple upper contacts are connected to the upper main shaft, and multiple lower contacts are connected to the lower main shaft. By setting multiple upper contacts and multiple lower contacts, multiple breakpoint circuits are achieved, thereby realizing rapid arc extinguishing.

[0013] Furthermore, the drive mechanism employs a spring accumulator or a clockwork accumulator, which drives the upper or lower spindle.

[0014] The wall is equipped with clamps, and the upper main shaft is installed on the wall through the clamps and can rotate freely. The lower main shaft is also installed on the wall with clamps, and the main shaft can also rotate freely. The clamps are used to install the lower main shaft on the wall.

[0015] The upper contact and the upper connecting piece are hinged together by a connecting rod. One end of the connecting rod is hinged to the upper connecting piece, and the other end of the connecting rod is fixedly connected to the upper contact. The upper contact and the upper connecting piece are fixedly connected by the connecting rod. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the circuit breaker component of the present invention;

[0019] Figure 4 This is a schematic diagram of the closed state of the present invention;

[0020] Figure 5 This is a schematic diagram of the tripping state of the present invention;

[0021] Figure 6 This is a schematic diagram of the upper spindle structure;

[0022] Figure 7 This is a schematic diagram of the lower spindle structure;

[0023] Figure 8 This is a schematic diagram of the assembly structure of the wall and the support frame;

[0024] Figure 9 This is a schematic diagram of the support structure.

[0025] Reference numerals: 1. Drive mechanism; 101. Semicircular frame; 2. Upper spindle; 201. Upper cantilever; 202. Upper connecting piece; 3. Lower spindle; 301. Lower cantilever; 302. Lower connecting piece; 4. Wall; 401. Semicircular mounting bracket; 5. Clamp; 6. Tie rod; 7. Connecting rod; 8. Upper contact; 801. Conductor; 9. Lower contact; 10. Bracket; 11. Pivot shaft. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and mastered.

[0027] Reference Figures 1 to 4 As shown, this embodiment provides a double-break circuit breaker, which mainly realizes the function of a double-break circuit breaker and helps to quickly extinguish the electric arc.

[0028] The circuit includes an upper contact 8 and a lower contact 9 mounted on a wall 4, and a conductor 801 for electrically connecting them. The upper contact 8, the lower contact 9, and the conductor 801 together form a circuit breaker assembly. An upper main shaft 2 and a lower main shaft 3 are rotatably mounted on the wall 4, arranged in parallel. One end of the upper contact 8 is connected to the crank of the upper main shaft 2, and one end of the lower contact 9 is connected to the crank of the lower main shaft 3. The other end of the upper contact 8 is hinged to the other end of the lower contact 9. A pull rod 6 is provided between the upper main shaft 2 and the lower main shaft 3. One end of the pull rod 6 is connected to the crank of the upper main shaft 2, and the other end of the pull rod 6 is connected to the crank of the lower main shaft 3. One of the upper spindle 2 and the lower spindle 3 is connected to a drive mechanism 1. The drive mechanism 1 is used to drive the upper spindle 2 or the lower spindle 3 to rotate. When one of the upper spindle 2 and the lower spindle 3 rotates, the other rotates in the opposite direction. The upper spindle 2 drives the upper contact 8 to rotate and separate from or contact the conductor 801. The lower spindle 3 drives the lower contact 9 to rotate and separate from or contact the conductor 801. The circuit breaker assembly is divided into a closed state and an open state. In the closed state, both the upper contact 8 and the lower contact 9 are in contact with the conductor 801. In the open state, both the upper contact 8 and the lower contact 9 are separated from the conductor 801.

[0029] Specifically:

[0030] Combination Figure 3 , Figure 4 and Figure 5 As shown, in order to achieve the hinge connection between the other end of the upper contact 8 and the lower contact 9, a pivot shaft 11 is provided between the other end of the upper contact 8 and the other end of the lower contact 9 to enable the hinge connection between the two. The pivot shaft 11 is installed on the wall 4, and the hinge connection between the other end of the upper contact 8 and the lower contact 9 is achieved by setting the pivot shaft 11.

[0031] Combination Figure 8 and Figure 9 As shown, in order to install the pivot shaft 11, a semi-circular mounting bracket 401 is provided on the wall 4. The semi-circular mounting bracket 401 is detachably connected to a bracket 10. The bracket 10 is provided with a semi-circular frame 101. The semi-circular frame 101 and the semi-circular mounting bracket 401 together form a rotating groove. The pivot shaft 11 is rotatably installed in the rotating groove. The installation of the pivot shaft 11 is achieved through the cooperation of the semi-circular frame 101 and the semi-circular mounting bracket 401.

[0032] Combination Figure 2 , Figure 3 and Figure 5As shown, in order to achieve crank connection between the two ends of the pull rod 6 and the upper spindle 2 and the lower spindle 3, an upper cantilever 201 is provided between the upper spindle 2 and the pull rod 6 to increase the straight distance between their hinge center and the axis of the upper spindle 2. A lower cantilever 301 is provided between the lower spindle 3 and the pull rod 6 to increase the straight distance between their hinge center and the axis of the lower spindle 3. The crank connection between the two ends of the pull rod 6 and the upper spindle 2 and the lower spindle 3 is achieved by setting the upper cantilever 201 and the lower cantilever 301.

[0033] Combination Figure 2 and Figure 3 As shown, in order to achieve the crank connection between the upper spindle 2 and the upper contact 8, and the crank connection between the lower contact 9 and the lower spindle 3, an upper connecting piece 202 is provided between one end of the upper contact 8 and the upper spindle 2. One end of the upper connecting piece 202 is fixedly connected to the upper spindle 2, and the other end of the upper connecting piece 202 is hinged to one end of the upper contact 8. A lower connecting piece 302 is provided between one end of the lower contact 9 and the lower spindle 3. One end of the lower connecting piece 302 is fixedly connected to the lower spindle 3, and the other end of the lower connecting piece 302 is hinged to one end of the lower contact 9. The crank connection between the upper spindle 2 and the upper contact 8, and the crank connection between the lower contact 9 and the lower spindle 3 are achieved through the arrangement of the upper connecting piece 202 and the lower connecting piece 302.

[0034] Combination Figure 2 and Figure 3 As shown, in order to achieve rapid arc extinguishing, at least two circuit breaking components are provided, and multiple circuit breaking components are arranged in parallel. Multiple upper contacts 8 are connected to the upper main shaft 2, and multiple lower contacts 9 are connected to the lower main shaft 3. By setting multiple upper contacts 8 and multiple lower contacts 9, multiple breakpoints are achieved to realize rapid arc extinguishing.

[0035] In order to drive the upper spindle 2 or the lower spindle 3, the drive mechanism 1 adopts a spring accumulator or a clockwork accumulator, and the upper spindle 2 or the lower spindle 3 is driven by the setting of the clockwork accumulator or the spring accumulator.

[0036] Combination Figure 1 As shown, in order to install the lower spindle 3 on the wall 4, the wall 4 is provided with a clamp 5. The upper spindle 2 is installed on the wall 4 through the clamp 5 and can rotate freely. The lower spindle 3 is also installed on the wall 4 with a clamp 5, and the spindle 3 can also rotate freely. The clamp 5 is used to install the lower spindle 3 on the wall 4.

[0037] Combination Figure 3As shown, in order to achieve insulation between the upper contact 8 and the upper connecting piece 202, the upper contact 8 and the upper connecting piece 202 are hinged together by a connecting rod 7. One end of the connecting rod 7 is hinged to the upper connecting piece 202, and the other end of the connecting rod 7 is fixedly connected to the upper contact 8. The upper contact 8 and the upper connecting piece 202 are fixedly connected by the connecting rod 7, thereby achieving insulation between the upper contact 8 and the upper connecting piece 202.

[0038] Implementation principle:

[0039] like Figures 1 to 4 As shown, in a dual-break circuit breaker, when the circuit breaker assembly is in the closed state, when the drive mechanism 1 drives one of the upper main shaft 2 and the lower main shaft 3 to rotate, the other will also rotate due to the action of the pull rod 6. The two rotate in opposite directions. The upper main shaft 2 will drive the upper contact 8 to rotate, and the lower main shaft 3 will drive the lower contact 9 to rotate. The upper main shaft 2 drives the upper contact 8 to rotate and separate it from the conductor 801, and the lower main shaft 3 drives the lower contact 9 to rotate and separate it from the conductor 801. The circuit breaker assembly switches to the open state. Conversely, when the circuit breaker assembly is initially in the open state, after the drive mechanism 1 works, the circuit breaker assembly switches to the closed state.

[0040] This invention enables a main circuit to have two breakpoints, thereby achieving the effect of quickly extinguishing the electric arc during the circuit breaking process.

[0041] The above are just typical examples of the present invention. In addition, the present invention may have many other specific embodiments. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims

1. A double-break circuit breaker, comprising an upper contact (8) and a lower contact (9) mounted on a wall (4) and a conductor (801) for electrically connecting the two, wherein the upper contact (8), the lower contact (9), and the conductor (801) together constitute a circuit breaking assembly, characterized in that: The wall (4) is rotatably provided with an upper main shaft (2) and a lower main shaft (3) arranged in parallel. One end of the upper contact (8) is connected to the crank of the upper main shaft (2), and one end of the lower contact (9) is connected to the crank of the lower main shaft (3). The other end of the upper contact (8) is hinged to the other end of the lower contact (9). A pull rod (6) is provided between the upper main shaft (2) and the lower main shaft (3). One end of the pull rod (6) is connected to the crank of the upper main shaft (2), and the other end of the pull rod (6) is connected to the crank of the lower main shaft (3). One of the upper main shaft (2) and the lower main shaft (3) is connected to a drive mechanism (1). Mechanism (1) is used to drive the upper spindle (2) or the lower spindle (3) to rotate. When one of the upper spindle (2) and the lower spindle (3) rotates, the other rotates in the opposite direction. The upper spindle (2) drives the upper contact (8) to rotate and separate or contact the conductor (801). The lower spindle (3) drives the lower contact (9) to rotate and separate or contact the conductor (801). The circuit breaker is divided into a closed state and a closed state. When the circuit is closed, both the upper contact (8) and the lower contact (9) are in contact with the conductor (801). When the circuit is open, both the upper contact (8) and the lower contact (9) are separated from the conductor (801).

2. A double-break circuit breaker according to claim 1, characterized in that: A pivot shaft (11) is provided between the other end of the upper contact (8) and the other end of the lower contact (9) to hinge the two, and the pivot shaft (11) is mounted on the wall (4).

3. A double-break circuit breaker according to claim 2, characterized in that: The wall (4) is provided with a semi-circular mounting bracket (401), which is detachably connected to a bracket (10). The bracket (10) is provided with a semi-circular frame (101), which together with the semi-circular mounting bracket (401) forms a rotating groove. The pivot shaft (11) is rotatably installed in the rotating groove.

4. A double-break circuit breaker according to claim 1, characterized in that: An upper cantilever (201) is provided between the upper spindle (2) and the tie rod (6) to increase the straight distance between the hinge center of the two and the axis of the upper spindle (2), and a lower cantilever (301) is provided between the lower spindle (3) and the tie rod (6) to increase the straight distance between the hinge center of the two and the axis of the lower spindle (3).

5. A double-break circuit breaker according to claim 1, characterized in that: An upper connecting piece (202) is provided between one end of the upper contact (8) and the upper main shaft (2). One end of the upper connecting piece (202) is fixedly connected to the upper main shaft (2), and the other end of the upper connecting piece (202) is hinged to one end of the upper contact (8). A lower connecting piece (302) is provided between one end of the lower contact (9) and the lower main shaft (3). One end of the lower connecting piece (302) is fixedly connected to the lower main shaft (3), and the other end of the lower connecting piece (302) is hinged to one end of the lower contact (9).

6. A double-break circuit breaker according to claim 1, characterized in that: At least two circuit breakers are provided, and multiple circuit breakers are arranged in parallel. Multiple upper contacts (8) are connected to the upper main shaft (2), and multiple lower contacts (9) are connected to the lower main shaft (3).

7. A double-break circuit breaker according to claim 1, characterized in that: The drive mechanism (1) adopts a clockwork energy storage device or a spring energy storage device.

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