Quick-acting structure of circuit breaker

Abstract

The invention provides a quick-acting structure of a circuit breaker, and relates to the technical field of circuit breakers. A circuit breaker body is installed on the rail plate, a fixing plate is fixed at the front end of the circuit breaker body, a sliding rail is installed at the rear end of the fixing plate through a bolt, a sliding block slides on the sliding rail, and an L-shaped seat is fixed on the sliding block; a first motor is operated to enable a first transmission belt to drive an L-shaped seat to move downwards, a first hydraulic rod is contracted to enable an overturning seat to overturn clockwise, at the moment, an extrusion wheel can make contact with a reset button and press the reset button down, and a second motor is operated to enable a second transmission belt to drive a rotating arm to rotate anticlockwise; the control handle is pulled upwards to a conduction position through the two groups of clamping plates, so that the circuit breaker is reset, and time and labor are saved; a first motor is operated to enable a first transmission belt to drive an L-shaped seat to move upwards, a first hydraulic rod is contracted to enable a turnover seat to turn over clockwise, an extrusion wheel is pressed on a test button, and a safety test can be rapidly carried out on the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a quick-acting structure of a circuit breaker. Background Art

[0002] A circuit breaker is a switch 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. The circuit breaker can be used as a substitute for a fuse. Unlike a fuse, which once operated and then must be replaced, a circuit breaker can be reset and resume normal operation. The present invention is a quick-acting structure of a circuit breaker.

[0003] After the existing circuit breaker trips, it is necessary to manually press the reset button and then turn the control handle to the on position. In addition, the circuit breaker is usually installed in a switch box or high on the wall. Resetting the circuit breaker is time-consuming and laborious, and the operation is inconvenient. Summary of the invention

[0004] The disclosed embodiment relates to a quick-action structure of a circuit breaker to solve the problem that after the existing circuit breaker trips, a reset button needs to be manually pressed and then a control handle is turned to a conducting position, which is time-consuming, labor-intensive and inconvenient to operate.

[0005] In a first aspect of the present disclosure, a quick-action structure of a circuit breaker is provided, which specifically comprises: a rail plate; a circuit breaker body is mounted on the rail plate; A No. 1 card seat and a No. 2 card seat are fixed at the rear end of the circuit breaker body, a locking plate is slidably arranged on the No. 2 card seat, a No. 1 spring is installed between the locking plate and the No. 2 card seat, the circuit breaker body is locked on the rail plate through the No. 1 card seat and the locking plate, a test button and a reset button are arranged at the front end of the circuit breaker body, and a fixing plate is fixed at the front end of the circuit breaker body, a slide rail is installed at the rear end of the fixing plate through bolts, a slider is slid on the slide rail, an L-shaped seat is fixed on the slider, and a No. 1 motor is installed on the fixing plate through bolts, a pulley is installed on the output shaft of the No. 1 motor, a pulley is installed at the lower end of the fixing plate through a bearing, a No. 1 transmission belt is connected between the pulley on the output shaft of the No. 1 motor and the pulley at the lower end of the fixing plate, the No. 1 transmission belt is fixedly connected to the front end of the L-shaped seat, two sets of rail rods are fixed on the L-shaped seat, lifting blocks are slidably arranged on the two sets of rail rods, a bracket is fixed at the rear ends of the two sets of lifting blocks, and a No. 1 hydraulic rod is installed between the L-shaped seat and the bracket.

[0006] In at least some embodiments, A U-shaped plate is fixed on the L-shaped seat, an L-shaped slide groove is arranged on the U-shaped plate, a flip seat is installed on the bracket, and shafts No. 1, No. 2 and No. 3 are fixed on the flip seat. Shaft No. 1 is rotatably connected to the bracket, shaft No. 2 moves in the L-shaped slide groove on the U-shaped plate, and shaft No. 3 contacts the upper end of the bracket.

[0007] In at least some embodiments, Six groups of intermediate seats are arranged on the flip seat, two groups of partition blocks are installed between the intermediate seats and the flip seat through bolts, a control panel is installed between the six groups of intermediate seats and the flip seat, and an arc groove is arranged on the control panel.

[0008] In at least some embodiments, A cylinder seat is hinged on the flip seat, and a No. 2 hydraulic rod is hinged on the cylinder seat. The piston rod of the No. 2 hydraulic rod is connected to the control plate through a pin shaft. A movable seat is slid between two adjacent groups of intermediate seats. The lower end of the movable seat moves in an arc groove on the control plate, and a clamping plate is installed on the movable seat by bolts. Cover plates are installed on the upper ends of the six groups of intermediate seats by bolts, and fixed columns are clamped between the six groups of clamping plates.

[0009] In at least some embodiments, A fixing cylinder is fixed on the fixing column, a top cover is installed on the upper end of the fixing cylinder by bolts, an adjusting screw is installed on the top cover by a locking ring, a No. 2 spring is installed on the adjusting screw, a movable column is movable at the lower end of the fixing cylinder, a threaded hole is provided at the upper end of the movable column, an extrusion wheel is installed on the lower end of the movable column by bolts, and the lower end of the adjusting screw is threadedly screwed into the threaded hole at the upper end of the movable column.

[0010] In at least some embodiments, A control handle is provided on the circuit breaker body, a side plate is installed on the left end of the circuit breaker body by bolts, a groove is provided on the edge of the side plate, a No. 2 transmission belt is installed in the groove, and a gear box is installed on the side plate by bolts, a No. 2 motor is installed on the gear box by bolts, a pulley is installed on the output shaft of the gear box, and the No. 2 transmission belt is sleeved on the pulley on the output shaft of the gear box.

[0011] In at least some embodiments, An adjusting plate is installed on the side plate by bolts, a sleeve groove is arranged on the adjusting plate, a tensioning wheel is installed on the adjusting plate by a bearing, the tensioning wheel is pressed down on the second transmission belt, a rotating arm is rotatable on the side plate, an arc-shaped through groove is arranged on the side plate, a connecting block is installed in the arc-shaped through groove, and the connecting block is connected to the rotating arm by bolts.

[0012] In at least some embodiments, A connecting seat is installed on the left side of the rotating arm by bolts, the connecting seat is fixedly connected to the No. 2 transmission belt, and a threaded rod is rotatable on the connecting seat, a No. 1 handwheel is fixed on the threaded rod, and a sliding seat is slidable on the right side of the rotating arm, a connecting plate is threadedly matched on the threaded rod, and the connecting plate is connected to the left side of the sliding seat by bolts.

[0013] In at least some embodiments, The right end of the sliding seat is equipped with a rotating seat through a bearing, and a hinged seat is installed on the rotating seat through bolts. Two groups of clamps are hinged on the hinged seat, and round rods are fixed to the left ends of the two groups of clamps. A No. 1 seat slides on the round rod, and a No. 2 seat is hinged on the No. 1 seat. The right ends of the two groups of clamps are in contact with the upper and lower ends of the control handle respectively.

[0014] In at least some embodiments, Two groups of guide rods are fixed on the rotating seat, and a moving seat is slidably arranged on the two groups of guide rods. A screw rod is installed between the two groups of guide rods through a bearing. The screw rod is threadedly matched with the moving seat, and a No. 2 handwheel is fixed on the screw rod. A connecting plate is connected between the moving seat and the No. 2 seat, and between the rotating seat and the No. 2 seat.

[0015] The present invention provides a quick-acting structure of a circuit breaker, which has the following beneficial effects: When resetting the circuit breaker, the present invention first operates the No. 1 motor to drive the No. 1 transmission belt to move the L-shaped seat downward, and contracts the No. 1 hydraulic rod to lower the position of the flip seat. When the flip seat drops to the corner of the L-shaped slide groove on the U-shaped plate, the bracket pulls the flip seat to move forward and downward. At this time, the front side of the flip seat flips downward, that is, the flip seat flips clockwise. At this time, the extrusion wheel can contact the reset button and press it, and the No. 2 motor is operated to drive the No. 2 transmission belt to drive the rotating arm to rotate counterclockwise. The control handle is pulled upward to the conducting position through the two sets of clamping plates to achieve the resetting of the circuit breaker, saving time and effort.

[0016] In addition, in the present invention, by running the No. 1 motor to make the No. 1 transmission belt drive the L-shaped seat to move upward, contracting the No. 1 hydraulic rod to make the flip seat flip clockwise, and pressing the extrusion wheel on the test button, the circuit breaker can be quickly tested for safety, and the pressing depth of the extrusion wheel can be controlled by rotating the adjusting screw, the position of the rotating seat can be adjusted by rotating the No. 1 hand wheel to rotate the threaded rod, and the No. 2 hand wheel can rotate the screw rod to adjust the clamping tightness of the two sets of clamps on the control handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1 The schematic diagram of the structure of the overall front end of the present application is shown; Figure 2 The schematic diagram of the overall backend structure of the present application is shown; Figure 3 This application shows Figure 2A schematic diagram of the enlarged structure of part A; Figure 4 This application shows Figure 1 A schematic diagram of the enlarged structure of part B; Figure 5 A schematic structural diagram of a fixing plate of the present application is shown; Figure 6 This application shows Figure 5 A schematic diagram of the enlarged structure of the middle C part; Figure 7 A schematic structural diagram of the flip seat of the present application is shown; Figure 8 A schematic diagram of the structure of the control panel of the present application is shown; Fig. 9 A schematic structural diagram of a fixed column of the present application is shown; Fig.10 A schematic structural diagram of a side panel of the present application is shown; Fig.11 This application shows Fig.10 A schematic diagram of the enlarged structure of the D part; Fig.12 A schematic structural diagram of the rotating arm of the present application is shown; Fig.13 The structural schematic diagram of the left side of the rotating seat and the articulated seat of the present application is shown; Fig.14 A schematic structural diagram of the rotating seat of the present application is shown.

[0020] List of reference numerals: 1. Rail plate; 2. Circuit breaker body; 21. No. 1 card seat; 22. No. 2 card seat; 221. Locking plate; 222. No. 1 spring; 23. Fixed plate; 231. Slide rail; 232. No. 1 motor; 233. No. 1 transmission belt; 234. Slider; 235. L-shaped seat; 2351. Rail rod; 2352. Lifting block; 236. Bracket; 2361. No. 1 hydraulic rod; 237. U-shaped plate; 238. Turning seat; 2381. No. 1 shaft; 2382. No. 2 shaft; 23 83, shaft No. 3; 2384, middle seat; 2385, partition block; 2386, control panel; 2387, cylinder seat; 2388, hydraulic rod No. 2; 239, movable seat; 2391, clamping plate; 2392, cover plate; 24, test button; 25, reset button; 26, control handle; 27, fixed column; 271, fixed cylinder; 272, top cover; 2721, adjusting screw; 2722, spring No. 2; 273, movable column; 2731, extrusion wheel; 3. Side panel; 31. Gearbox; 311. No. 2 motor; 312. Adjusting plate; 3121. Tensioning wheel; 313. No. 2 transmission belt; 32. Rotating arm; 321. Connecting block; 322. Connecting seat; 323. Sliding seat; 324. Connecting plate; 325. Threaded rod; 3251. No. 1 handwheel; 33. Rotating seat; 331. Articulated seat; 332. Clamp; 3321. No. 1 seat; 3322. No. 2 seat; 3323. Connecting plate; 333. Guide rod; 334. Screw rod; 3341. No. 2 handwheel; 335. Moving seat. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 14 : The present invention proposes a quick-action structure of a circuit breaker, comprising: a rail plate 1; a circuit breaker body 2 is mounted on the rail plate 1; A No. 1 card seat 21 and a No. 2 card seat 22 are fixed at the rear end of the circuit breaker body 2, a locking piece 221 is slidably provided on the No. 2 card seat 22, a No. 1 spring 222 is installed between the locking piece 221 and the No. 2 card seat 22, the circuit breaker body 2 is locked on the rail plate 1 through the No. 1 card seat 21 and the locking piece 221, a test button 24 and a reset button 25 are provided at the front end of the circuit breaker body 2, and a fixing plate 23 is fixed at the front end of the circuit breaker body 2, a slide rail 231 is installed at the rear end of the fixing plate 23 by bolts, a slider 234 is slidably provided on the slide rail 231, an L-shaped seat 235 is fixed on the slider 234, and a test button 24 and a reset button 25 are provided at the front end of the circuit breaker body 2, and a fixing plate 23 is fixed at the front end of the circuit breaker body 2, a slide rail 231 is installed by bolts, a slide rail 234 is slidably provided on the slide rail 231, an L-shaped seat 235 is fixed on the slide rail 234, and a test button 24 and a reset button 25 are provided at the front end of the circuit breaker body 2 ... a test button 24 and a reset button 25 are provided at the front end of the circuit breaker body 2, a test button 24 and a reset button 25 are provided at the front end of the circuit breaker body 2, a test button 24 and a reset button 25 are provided at the A No. 1 motor 232 is installed with bolts, a pulley is installed on the output shaft of the No. 1 motor 232, a pulley is installed on the lower end of the fixed plate 23 through a bearing, a No. 1 transmission belt 233 is connected between the pulley on the output shaft of the No. 1 motor 232 and the pulley at the lower end of the fixed plate 23, the No. 1 transmission belt 233 is fixedly connected to the front end of the L-shaped seat 235, two groups of rail rods 2351 are fixed on the L-shaped seat 235, and lifting blocks 2352 are slidably arranged on the two groups of rail rods 2351, a bracket 236 is fixed to the rear end of the two groups of lifting blocks 2352, and a No. 1 hydraulic rod 2361 is installed between the L-shaped seat 235 and the bracket 236.

[0023] In the disclosed embodiment, A U-shaped plate 237 is fixed on the L-shaped seat 235, an L-shaped slide groove is arranged on the U-shaped plate 237, a flip seat 238 is installed on the bracket 236, a first shaft 2381, a second shaft 2382 and a third shaft 2383 are fixed on the flip seat 238, the first shaft 2381 is rotatably connected with the bracket 236, the second shaft 2382 moves in the L-shaped slide groove on the U-shaped plate 237, the third shaft 2383 contacts with the upper end of the bracket 236, six groups of intermediate seats 2384 are arranged on the flip seat 238, two groups of partition blocks 2385 are installed between the intermediate seats 2384 and the flip seat 238 by bolts, and the six groups of intermediate seats 2384 and the flip seat 238 are connected. A control plate 2386 is installed, an arc groove is arranged on the control plate 2386, a cylinder seat 2387 is hinged on the flip seat 238, a No. 2 hydraulic rod 2388 is hinged on the cylinder seat 2387, and the piston rod of the No. 2 hydraulic rod 2388 is connected to the control plate 2386 through a pin shaft, and a movable seat 239 is slid between two adjacent groups of intermediate seats 2384, and the lower end of the movable seat 239 moves in the arc groove on the control plate 2386, and a clamping plate 2391 is installed on the movable seat 239 by bolts, and a cover plate 2392 is installed on the upper end of the six groups of intermediate seats 2384 by bolts, and a fixed column 27 is clamped between the six groups of clamping plates 2391, and its function is: Figure 7 As shown, the second hydraulic rod 2388 is extended to rotate the control plate 2386 clockwise. At this time, the six groups of movable seats 239 are contracted, and the six groups of clamping plates 2391 clamp the fixed column 27.

[0024] In the disclosed embodiment, A fixing cylinder 271 is fixed on the fixing column 27, a top cover 272 is installed on the upper end of the fixing cylinder 271 by bolts, an adjusting screw 2721 is installed on the top cover 272 by a locking ring, a No. 2 spring 2722 is installed on the adjusting screw 2721, a movable column 273 is movable at the lower end of the fixing cylinder 271, a threaded hole is arranged at the upper end of the movable column 273, an extrusion wheel 2731 is installed at the lower end of the movable column 273 by bolts, and the lower end of the adjusting screw 2721 is threadedly screwed into the threaded hole at the upper end of the movable column 273, and its function is: Fig. 9 As shown, by rotating the adjusting screw 2721 to make the movable column 273 move in the fixed cylinder 271, the pressing depth of the extrusion wheel 2731 can be controlled.

[0025] Embodiment 2, based on embodiment 1, A control handle 26 is provided on the circuit breaker body 2, a side plate 3 is installed on the left end of the circuit breaker body 2 by bolts, a groove is provided on the edge of the side plate 3, a second transmission belt 313 is installed in the groove, a gear box 31 is installed on the side plate 3 by bolts, a second motor 311 is installed on the gear box 31 by bolts, a pulley is installed on the output shaft of the gear box 31, the second transmission belt 313 is sleeved on the pulley on the output shaft of the gear box 31, an adjusting plate 312 is installed on the side plate 3 by bolts, a sleeve groove is provided on the adjusting plate 312, a tensioning wheel 3121 is installed on the adjusting plate 312 through a bearing, and the tensioning wheel 3121 is pressed down on the second transmission On the driving belt 313, a rotating arm 32 is rotated on the side plate 3, an arc-shaped through groove is provided on the side plate 3, a connecting block 321 is installed in the arc-shaped through groove, the connecting block 321 is connected to the rotating arm 32 by bolts, a connecting seat 322 is installed on the left side of the rotating arm 32 by bolts, the connecting seat 322 is fixedly connected to the No. 2 driving belt 313, and a threaded rod 325 is rotated on the connecting seat 322, a No. 1 hand wheel 3251 is fixed on the threaded rod 325, and a sliding seat 323 is slidably provided on the right side of the rotating arm 32, a connecting plate 324 is threadedly matched on the threaded rod 325, and the connecting plate 324 is connected to the left side of the sliding seat 323 by bolts, and its function is: as Figure 10-12 As shown, the second motor 311 is operated to make the second transmission belt 313 drive the rotating arm 32 to rotate, and the first hand wheel 3251 is rotated to make the threaded rod 325 rotate, so that the position of the rotating seat 33 can be adjusted.

[0026] Embodiment 3, based on Embodiment 1 and Embodiment 2, The right end of the sliding seat 323 is installed with a rotating seat 33 through a bearing, and a hinge seat 331 is installed on the rotating seat 33 through a bolt. Two groups of clamping plates 332 are hinged on the hinge seat 331. The left ends of the two groups of clamping plates 332 are fixed with round rods. A No. 1 seat 3321 slides on the round rod, and a No. 2 seat 3322 is hinged on the No. 1 seat 3321. The right ends of the two groups of clamping plates 332 are respectively in contact with the upper and lower ends of the control handle 26. Two groups of guide rods 333 are fixed on the rotating seat 33, and the moving seat 33 slides on the two groups of guide rods 333. 5. A screw rod 334 is installed between the two groups of guide rods 333 through a bearing. The screw rod 334 is threadedly matched with the movable seat 335. A second hand wheel 3341 is fixed on the screw rod 334. A connecting plate 3323 is connected between the movable seat 335 and the second seat 3322, and between the rotating seat 33 and the second seat 3322. Its function is to rotate the second hand wheel 3341 to rotate the screw rod 334, so that the movable seat 335 slides on the two groups of guide rods 333, and the clamping tightness of the two groups of clamping plates 332 on the control handle 26 can be adjusted.

[0027] The working principle of this embodiment is as follows: when resetting the circuit breaker, firstly, the No. 1 motor 232 is operated to make the No. 1 transmission belt 233 drive the L-shaped seat 235 to move downward, and the No. 1 hydraulic rod 2361 is retracted to lower the position of the flip seat 238. When the flip seat 238 drops to the corner of the L-shaped slide groove on the U-shaped plate 237, the bracket 236 pulls the flip seat 238 to move to the front and lower side. At this time, the front side of the flip seat 238 is flipped downward, that is, the flip seat 238 is flipped clockwise. At this time, the extrusion wheel 2731 can contact the reset button 25 and press it, and the No. 2 motor 311 is operated to make the No. 2 transmission belt 313 drive the rotating arm 32 to rotate counterclockwise, and the control handle 26 is pulled upward to the conducting position through the two sets of clamping plates 332 to achieve the reset of the circuit breaker; The No. 1 motor 232 is operated to make the No. 1 transmission belt 233 drive the L-shaped seat 235 to move upward, and the No. 1 hydraulic rod 2361 is retracted to make the flip seat 238 flip clockwise, so that the extrusion wheel 2731 presses on the test button 24, so as to quickly perform a safety test on the circuit breaker; Among them, by rotating the adjusting screw 2721 to make the movable column 273 move in the fixed cylinder 271, the pressing depth of the extrusion wheel 2731 can be controlled, and by rotating the second hand wheel 3341 to rotate the screw rod 334, the movable seat 335 can slide on the two sets of guide rods 333, and the clamping tightness of the two sets of clamps 332 on the control handle 26 can be adjusted.

[0028] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0029] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0030] The above are only specific implementation methods of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure.

Claims

1. A quick-acting structure of a circuit breaker, comprising: A track plate (1); a circuit breaker body (2) is mounted on the track plate (1), characterized in that a first card seat (21) and a second card seat (22) are fixed at the rear end of the circuit breaker body (2), a locking plate (221) is slidably mounted on the second card seat (22), a first spring (222) is mounted between the locking plate (221) and the second card seat (22), the circuit breaker body (2) is locked on the track plate (1) by the first card seat (21) and the locking plate (221), a test button (24) and a reset button (25) are arranged at the front end of the circuit breaker body (2), a fixing plate (23) is fixed at the front end of the circuit breaker body (2), a slide rail (231) is mounted at the rear end of the fixing plate (23) by bolts, a slide block (234) is slidably mounted on the slide rail (231), and a slide block (234) is mounted on the slide block (234). An L-shaped seat (235) is fixed, and a No. 1 motor (232) is installed on the fixing plate (23) by bolts, a pulley is installed on the output shaft of the No. 1 motor (232), a pulley is installed on the lower end of the fixing plate (23) through a bearing, a No. 1 transmission belt (233) is connected between the pulley on the output shaft of the No. 1 motor (232) and the pulley at the lower end of the fixing plate (23), the No. 1 transmission belt (233) is fixedly connected to the front end of the L-shaped seat (235), two groups of rail rods (2351) are fixed on the L-shaped seat (235), lifting blocks (2352) are slidably provided on the two groups of rail rods (2351), brackets (236) are fixed at the rear ends of the two groups of lifting blocks (2352), and a No. 1 hydraulic rod (2361) is installed between the L-shaped seat (235) and the bracket (236).

2. A quick-acting structure of a circuit breaker according to claim 1, characterized in that: A U-shaped plate (237) is fixed on the L-shaped seat (235), an L-shaped slide groove is provided on the U-shaped plate (237), a flip seat (238) is installed on the bracket (236), a first shaft (2381), a second shaft (2382) and a third shaft (2383) are fixed on the flip seat (238), the first shaft (2381) is rotatably connected to the bracket (236), the second shaft (2382) moves in the L-shaped slide groove on the U-shaped plate (237), and the third shaft (2383) contacts the upper end of the bracket (236).

3. The quick-acting structure of a circuit breaker according to claim 2, characterized in that: Six groups of intermediate seats (2384) are arranged on the flip seat (238), two groups of partition blocks (2385) are installed between the intermediate seats (2384) and the flip seat (238) via bolts, a control panel (2386) is installed between the six groups of intermediate seats (2384) and the flip seat (238), and an arc groove is arranged on the control panel (2386).

4. A quick-action structure of a circuit breaker according to claim 3, characterized in that: The flip seat (238) is hingedly connected to a cylinder seat (2387), and a second hydraulic rod (2388) is hingedly connected to the cylinder seat (2387). The piston rod of the second hydraulic rod (2388) is connected to the control plate (2386) via a pin shaft. A movable seat (239) is slidably provided between two adjacent groups of intermediate seats (2384). The lower end of the movable seat (239) moves in an arc groove on the control plate (2386), and a clamping plate (2391) is installed on the movable seat (239) via bolts. Cover plates (2392) are installed on the upper ends of the six groups of intermediate seats (2384) via bolts, and fixed columns (27) are clamped between the six groups of clamping plates (2391).

5. The quick-acting structure of a circuit breaker according to claim 4, characterized in that: A fixing cylinder (271) is fixed on the fixing column (27), a top cover (272) is installed on the upper end of the fixing cylinder (271) by means of bolts, an adjusting screw (2721) is installed on the top cover (272) by means of a locking ring, a second spring (2722) is installed on the adjusting screw (2721), a movable column (273) is movable at the lower end of the fixing cylinder (271), a threaded hole is provided at the upper end of the movable column (273), an extrusion wheel (2731) is installed at the lower end of the movable column (273) by means of bolts, and the lower end of the adjusting screw (2721) is threadedly screwed into the threaded hole at the upper end of the movable column (273).

6. The quick-acting structure of a circuit breaker according to claim 1, characterized in that: The circuit breaker body (2) is provided with a control handle (26); a side plate (3) is mounted on the left end of the circuit breaker body (2) by means of bolts; a groove is provided on the edge of the side plate (3); a second transmission belt (313) is mounted in the groove; a gear box (31) is mounted on the side plate (3) by means of bolts; a second motor (311) is mounted on the gear box (31) by means of bolts; a pulley is mounted on the output shaft of the gear box (31); and the second transmission belt (313) is sleeved on the pulley on the output shaft of the gear box (31).

7. The quick-action structure of a circuit breaker according to claim 6, characterized in that: An adjusting plate (312) is mounted on the side plate (3) via bolts, a sleeve-shaped groove is provided on the adjusting plate (312), a tensioning wheel (3121) is mounted on the adjusting plate (312) via a bearing, the tensioning wheel (3121) is pressed down on the second transmission belt (313), a rotating arm (32) is rotatably mounted on the side plate (3), an arc-shaped through groove is provided on the side plate (3), a connecting block (321) is mounted in the arc-shaped through groove, and the connecting block (321) is connected to the rotating arm (32) via bolts.

8. The quick-acting structure of a circuit breaker according to claim 7, characterized in that: A connecting seat (322) is installed on the left side of the rotating arm (32) by means of bolts, the connecting seat (322) is fixedly connected to the second transmission belt (313), a threaded rod (325) is rotatably provided on the connecting seat (322), a first hand wheel (3251) is fixed on the threaded rod (325), and a sliding seat (323) is slidably provided on the right side of the rotating arm (32), a connecting plate (324) is threadedly engaged on the threaded rod (325), and the connecting plate (324) is connected to the left side of the sliding seat (323) by means of bolts.

9. The quick-acting structure of a circuit breaker according to claim 8, characterized in that: The right end of the sliding seat (323) is mounted with a rotating seat (33) via a bearing, and a hinge seat (331) is mounted on the rotating seat (33) via bolts, and two groups of clamping plates (332) are hingedly connected to the hinge seat (331), and the left ends of the two groups of clamping plates (332) are fixed with round rods, and a No. 1 seat (3321) is slidably mounted on the round rod, and a No. 2 seat (3322) is hingedly connected to the No. 1 seat (3321), and the right ends of the two groups of clamping plates (332) are respectively in contact with the upper and lower ends of the control handle (26).

10. The quick-acting structure of a circuit breaker according to claim 9, characterized in that: Two groups of guide rods (333) are fixed on the rotating seat (33), and a moving seat (335) is slidably mounted on the two groups of guide rods (333). A screw rod (334) is installed between the two groups of guide rods (333) via a bearing. The screw rod (334) and the moving seat (335) are threadedly matched. A second hand wheel (3341) is fixed on the screw rod (334). A connecting plate (3323) is connected between the moving seat (335) and the second seat (3322), and between the rotating seat (33) and the second seat (3322).

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