A novel circuit breaker structure

Abstract

The application relates to a novel circuit breaker structure, which is provided with an operating mechanism in a shell, the operating mechanism comprising a guide rod, a spring, a transmission plate, a connecting rod and a transmission mechanism, the guide rod and the spring are located at the left top of a movable conducting rod and are parallel to the movable conducting rod, the guide rod is fixedly connected with the shell, the left end of the spring is fixedly connected with the guide rod through an adjusting nut, and an operating hole is formed in the shell at the position corresponding to the adjusting nut; the middle part of the transmission plate is hingedly connected with the left end of the connecting rod, the right end is fixedly connected with the movable conducting rod, the upper end abuts against the right end of the spring; the transmission mechanism is used for pushing and pulling the lower end of the transmission plate; when the transmission mechanism applies a pushing force to the lower end of the transmission plate, the transmission plate pushes the connecting rod to the right to complete closing; after the closing is completed, the connecting rod is static, the pushing force is continuously applied to the lower end of the transmission plate, the transmission plate rotates counterclockwise, the upper end of the transmission plate extrudes the spring to compress and deform, and overstroke closing is completed; when a pulling force is applied to the lower end of the transmission plate, opening is completed. The technical scheme is convenient to operate.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage vacuum circuit breaker technology, specifically relating to a novel circuit breaker structure. Background Technology

[0002] High-voltage vacuum circuit breakers are core switching devices used in medium and high voltage circuits in power systems. Currently, the overtravel spring and moving conductive rod of the circuit breaker are connected as a whole. When measuring and adjusting the overtravel, the entire mechanism needs to be disassembled, which is labor-intensive and inefficient. Moreover, it is difficult to adjust the overtravel after the circuit breaker is put into operation. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a new type of circuit breaker structure.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A novel circuit breaker structure includes a mounting plate and an arc-extinguishing chamber and a housing fixedly connected to the mounting plate. The arc-extinguishing chamber houses a moving contact, a stationary contact, and a moving conductive rod. An operating mechanism is located within the housing. The moving contact is fixedly connected to the moving conductive rod, which moves linearly relative to the housing to open and close the circuit with the stationary contact. The operating mechanism includes a guide rod, a spring, a transmission plate, a connecting rod, and a transmission mechanism. The guide rod and spring are both located to the upper left of the moving conductive rod and are parallel to it. The guide rod is fixedly connected to the housing, and the left end of the spring is fixedly connected to the guide rod via an adjusting nut. A corresponding opening is provided on the housing at the position of the adjusting nut. Operating hole; the middle part of the transmission plate is hinged to the left end of the connecting rod, and the right end of the connecting rod is fixedly connected to the moving conductive rod; the upper end of the transmission plate abuts against the right end of the spring; the transmission mechanism is used to push and pull the lower end of the transmission plate; when the transmission mechanism applies a pushing force to the lower end of the transmission plate, the transmission plate moves to the right, thereby pushing the connecting rod to drive the moving contact to abut against the stationary contact to complete the closing; after the closing is completed, the connecting rod stops, and the transmission mechanism continues to apply a pushing force to the lower end of the transmission plate to make the transmission plate rotate counterclockwise, and the upper end of the transmission plate squeezes the spring to compress and deform, completing the overtravel closing; when the transmission mechanism applies a pulling force to the lower end of the transmission plate, the opening is completed.

[0005] Furthermore, the transmission mechanism includes connecting rod I, connecting rod II, and a transmission shaft. The transmission shaft is located on the left side of the transmission plate and is rotatably connected to the outer casing. The left end of connecting rod II is fixedly connected to the transmission shaft, and the right end of connecting rod II is hinged to the left end of connecting rod I. The right end of connecting rod I is hinged to the lower end of the transmission plate. When the transmission shaft rotates clockwise, connecting rod I swings to apply the thrust to the lower end of the transmission plate. When the transmission shaft rotates counterclockwise, connecting rod I swings to apply the tension to the lower end of the transmission plate.

[0006] Furthermore, the middle part of the transmission plate is hinged to the left end of the connecting rod via pin B.

[0007] Furthermore, the spring is sleeved on the outer periphery of the guide rod, the guide rod is provided with a through groove, and the upper end of the transmission plate is fixedly provided with a pin A. The through groove is used to allow the pin A to pass through without hindering the movement of the pin A.

[0008] The beneficial effects that this invention can achieve are as follows: the spring installation method is improved, and when it is necessary to adjust the overtravel, it is only necessary to insert a wrench through the operating hole and turn the adjusting nut, without disassembling the circuit breaker's outer shell and internal components, making the operation convenient. Attached Figure Description

[0009] Figure 1 This is a front view of an embodiment of the present utility model.

[0010] Figure 2 This is a top view of an embodiment of the present utility model.

[0011] Figure 3 yes Figure 1 An enlarged view of section A.

[0012] Figure 4 yes Figure 2 A magnified view of section B.

[0013] In the diagram: 1-Guide rod, 101-Through groove, 2-Adjusting nut, 3-Spring, 4-Pin A, 5-Transmission plate, 6-Connecting rod, 7-Pin B, 8-Pin C, 9-Connecting rod I, 10-Pin D, 11-Connecting rod II, 12-Transmission shaft, 13-Outer shell, 1301-Operating hole, 14-Mounting plate, 15-Arc extinguishing chamber. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1 and Figure 2 As shown, a novel circuit breaker structure includes a mounting plate 14, an arc-extinguishing chamber 15 fixedly connected to the mounting plate 14, and a housing 13. The arc-extinguishing chamber 15 contains a moving contact, a stationary contact, and a moving conductive rod. The housing 13 contains an operating mechanism. The moving contact is fixedly connected to the moving conductive rod, and the moving conductive rod moves linearly relative to the housing 13 to open and close the circuit with the stationary contact. All of the above are prior art and will not be described in detail further. The special features of this embodiment are as follows: like Figure 3 As shown, the operating mechanism includes a guide rod 1, a spring 3, a transmission plate 5, a connecting rod 6, a connecting rod I 9, a connecting rod II 11, and a transmission shaft 12.

[0016] Guide rod 1 and spring 3 are both located to the upper left of the moving conductive rod and are parallel to it. Guide rod 1 is fixedly connected to housing 13. Spring 3 is sleeved on the outer circumference of guide rod 1, and the left end of spring 3 is fixedly connected to guide rod 1 through adjusting nut 2. An operating hole 1301 is provided on housing 13 corresponding to adjusting nut 2 (e.g., Figure 2 and Figure 4 As shown, the operating hole 1301 is provided to facilitate inserting a wrench into the housing 13 to rotate the adjusting nut 2, thereby adjusting the compression of the spring 3.

[0017] The guide rod 1 has a through groove 101. The transmission plate 5 has pins A4, B7, and C8 arranged sequentially from top to bottom. The through groove 101 is only used to allow pin A4 to pass through without hindering the movement of pin A4. The upper end of the transmission plate 5 abuts against the right end of the spring 3. The middle part of the transmission plate 5 is hinged to the left end of the connecting rod 6 via pin B7. The right end of the connecting rod 6 is fixedly connected to the moving conductive rod. The transmission shaft 12 is located on the left side of the transmission plate 5. The transmission shaft 12 is rotatably connected to the outer casing 13. The left end of the connecting rod II 11 is fixedly connected to the transmission shaft 12. The transmission shaft 12 is a perforated shaft to ensure the reliability of the connection between the left end of the connecting rod II 11 and the transmission shaft 12. The right end of the connecting rod II 11 is hinged to the left end of the connecting rod I 9 via pin D10. The right end of the connecting rod I 9 is hinged to the lower end of the transmission plate 5.

[0018] When the drive mechanism (which can be a conventional linkage type with a conventional structure, which will not be described in detail) drives the transmission shaft 12 to rotate clockwise, the connecting rod I9 swings to apply a pushing force to the lower end of the transmission plate 5, causing the transmission plate 5 to move to the right, thereby pushing the connecting rod 6 to drive the moving contact to abut the stationary contact to complete the closing. After the closing is completed, the connecting rod 6 stops, and the drive mechanism continues to drive the transmission shaft 12 to rotate clockwise. The transmission plate 5 can no longer move to the right. At this time, the transmission plate 5 rotates counterclockwise around the pin B7 as the rotation center, and the upper end of the transmission plate 5 compresses and deforms the spring 3, completing the overtravel closing. When the drive mechanism drives the transmission shaft 12 to rotate counterclockwise, the connecting rod I9 swings to apply a pulling force to the lower end of the transmission plate 5, and both the spring 3 and the transmission plate 5 reset, completing the opening.

[0019] In the description of this invention, terms such as "inner," "outer," "upper," "lower," "front," "rear," "left," and "right," which indicate orientation or positional relationship, are used only for the convenience of describing this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] The above description is only one embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A novel circuit breaker structure, comprising a mounting plate (14) and an arc-extinguishing chamber (15) and a housing (13) fixedly connected to the mounting plate (14), wherein the arc-extinguishing chamber (15) is provided with a moving contact, a stationary contact and a moving conductive rod, and the housing (13) is provided with an operating mechanism, wherein the moving contact is fixedly connected to the moving conductive rod, and the moving conductive rod moves linearly relative to the housing (13) to drive the moving contact to open and close with the stationary contact; characterized in that: The operating mechanism includes a guide rod (1), a spring (3), a transmission plate (5), a connecting rod (6), and a transmission mechanism. The guide rod (1) and the spring (3) are both located above the left of the moving conductive rod and are parallel to it. The guide rod (1) is fixedly connected to the outer shell (13). The left end of the spring (3) is fixedly connected to the guide rod (1) through an adjusting nut (2). An operating hole (1301) is provided on the outer shell (13) corresponding to the adjusting nut (2). The middle part of the transmission plate (5) is hinged to the left end of the connecting rod (6), and the right end of the connecting rod (6) is fixedly connected to the moving conductive rod. The transmission plate (5) The upper end of the transmission plate (5) abuts against the right end of the spring (3); the transmission mechanism is used to push and pull the lower end of the transmission plate (5); when the transmission mechanism applies a pushing force to the lower end of the transmission plate (5), the transmission plate (5) moves to the right, thereby pushing the connecting rod (6) to drive the moving contact to abut against the stationary contact to complete the closing; after the closing is completed, the connecting rod (6) stops, and the transmission mechanism continues to apply a pushing force to the lower end of the transmission plate (5) so that the transmission plate (5) rotates counterclockwise, and the upper end of the transmission plate (5) squeezes the spring (3) to compress and deform, completing the overtravel closing; when the transmission mechanism applies a pulling force to the lower end of the transmission plate (5), the opening is completed.

2. The novel circuit breaker structure according to claim 1, characterized in that: The transmission mechanism includes connecting rod I (9), connecting rod II (11) and transmission shaft (12). The transmission shaft (12) is located on the left side of the transmission plate (5). The transmission shaft (12) is rotatably connected to the outer shell (13). The left end of connecting rod II (11) is fixedly connected to the transmission shaft (12). The right end of connecting rod II (11) is hinged to the left end of connecting rod I (9). The right end of connecting rod I (9) is hinged to the lower end of the transmission plate (5). When the transmission shaft (12) rotates clockwise, connecting rod I (9) swings to apply the thrust to the lower end of the transmission plate (5). When the transmission shaft (12) rotates counterclockwise, connecting rod I (9) swings to apply the tension to the lower end of the transmission plate (5).

3. The novel circuit breaker structure according to claim 1, characterized in that: The middle part of the transmission plate (5) is hinged to the left end of the connecting rod (6) by a pin B (7).

4. The novel circuit breaker structure according to claim 1, characterized in that: The spring (3) is sleeved on the outer periphery of the guide rod (1). The guide rod (1) is provided with a through groove (101). The upper end of the transmission plate (5) is fixedly provided with a pin A (4). The through groove (101) is used to allow the pin A (4) to pass through without hindering the movement of the pin A (4).

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