An automatic reset device for human-like action of motor train unit circuit breaker

Abstract

The present application belongs to the technical field of motor train unit auxiliary accessories, and relates to the technical field of motor train unit auxiliary power supply circuit breaker accessories. The present application solves the defects of unilateral top stack slipping, closing arc, handle pressure breakage, needle valve debugging difficulty and the like in the prior art. The main technical scheme of the present application comprises: a shell, a trigger mechanism triggered by a circuit breaker, a delay driving mechanism connected with the trigger mechanism, and a yoke execution mechanism connected with the delay driving mechanism; the yoke execution mechanism clamps a wrapped circuit breaker key, the circuit breaker trips, the circuit breaker key falls to trigger the trigger mechanism to work, the trigger mechanism triggers the delay driving mechanism to run at a segmented speed, when the delay driving mechanism runs at a low speed, the delay driving mechanism drives the yoke execution mechanism to wrap the circuit breaker key to be centered and to drive the yoke execution mechanism to store energy, when the delay driving mechanism switches to high-speed operation, the delay driving mechanism drives the yoke execution mechanism to release energy to push the circuit breaker key to close and lock.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary power supply circuit breaker accessories for EMU trains, and relates to an automatic reset device that mimics human hand movements for EMU circuit breakers. Background Technology

[0002] In the existing technology, the published patent CN211350538U is a circuit breaker reset device of the same type. This patent uses a single-piece L-shaped metal fork to partially push the circuit breaker's plastic key on one side. Actual testing on vehicles revealed that the metal-plastic contact surface is prone to slippage and eccentricity, resulting in 22% of operating conditions experiencing false closing and re-tripping faults. Furthermore, its throttle needle valve has a fixed throttle orifice diameter, and the cylinder lifts at a constant speed throughout the entire stroke, leading to slow closing speeds and potential arcing and contact erosion. After closing, the fork continuously presses against the handle, causing 18% of circuit breaker handles to crack and break under train bumpy conditions. The original throttle needle valve's air inlet is hidden without a visible structure, and there are no quantitative standards for delay debugging, relying entirely on experience. Therefore, solving these problems is crucial and urgent for this field. Summary of the Invention

[0003] In view of this, the present invention provides an automatic reset device for a circuit breaker of a high-speed train that mimics human hand operation. The main purpose is to overcome the defects of the prior art, such as slippage due to unilateral pushing, arcing during closing, damage to the handle due to pressure, and inconvenience in adjusting the needle valve. It replicates the three-stage action of manual closing: short-distance leveling, rapid closing, and unloading in place, thereby improving the reliability of automatic reset of the on-board circuit breaker.

[0004] To achieve the above objectives, the present invention mainly provides the following technical solutions: This invention provides a human-hand-like automatic reset device for a circuit breaker in a high-speed train, comprising: a housing, a triggering mechanism mounted on the housing and triggered by the circuit breaker, a time-delay drive mechanism mounted on the housing and connected to the triggering mechanism, and a shift fork actuator connected to the time-delay drive mechanism. The shift fork actuator clamps and wraps around the circuit breaker key. When the circuit breaker trips, the circuit breaker key falls, triggering the triggering mechanism to operate. The triggering mechanism then triggers the time-delay drive mechanism to operate at segmented speed control. When the time-delay drive mechanism operates at low speed, it drives the shift fork actuator to wrap around the circuit breaker key for centering and to store energy. When the time-delay drive mechanism switches to high speed, it drives the shift fork actuator to release energy, causing the shift fork actuator to push the circuit breaker key to close and lock. Then, it drives the shift fork actuator to flip outward and disengage from the circuit breaker key to achieve automatic mechanical unloading.

[0005] Furthermore, the triggering mechanism includes a shaft installed inside the housing, a trigger fork installed on the shaft, a locking member connected to the trigger fork, and a torsion spring disposed on the shaft. The locking member is connected to the delay drive mechanism. When the circuit breaker switch falls, it triggers the trigger fork to press down, which drives the locking member to work and trigger the delay drive mechanism to operate at a segmented speed.

[0006] Furthermore, the delay drive mechanism includes a cylinder, a piston installed in the cylinder, a seal disposed on the piston, a piston rod installed at one end of the cylinder and connected to the piston, a first elastic device mounted on the piston rod, a throttle needle valve installed at the other end of the cylinder, a second elastic device mounted on the throttle needle valve, and a reset button installed on the top of the housing and fixedly connected to the piston rod. The piston rod is connected to the trigger mechanism, and the trigger mechanism triggers the piston rod to run. The running of the piston rod drives the first elastic device to work and drive the piston to run.

[0007] Furthermore, the throttle needle valve includes a stepped pin connected to the second elastic device. The stepped pin includes a first stepped portion and a second stepped portion connected to the first stepped portion. A first throttling orifice is provided on the first stepped portion, and a second throttling orifice communicating with the first throttling orifice is provided on the second stepped portion. The diameter of the second throttling orifice is larger than the diameter of the first throttling orifice.

[0008] Furthermore, the throttle needle valve also includes an intake connector, an intake observation window, and an adjustment button with an adjustable delay time. The intake connector, the intake observation window, and the adjustment button are all located on the outside of the housing. The intake connector is connected to an external air source pipeline, the intake observation window is connected to the internal air chamber of the throttle needle valve, and the adjustment button adjusts the opening degree of the stepped pin inside the throttle needle valve by rotation.

[0009] Furthermore, the shift fork actuator includes a clamping frame for clamping and wrapping the circuit breaker key, a horizontal part of the shift fork fixedly connected to the clamping frame, a vertical part of the shift fork vertically connected to the horizontal part of the shift fork to form the shift fork, a third elastic device hinged to the vertical part of the shift fork and fixedly connected to the clamping frame, and a connecting member connected to the third elastic device. The vertical part of the shift fork is provided with a Y-shaped guide groove, the Y-shaped guide groove integrally forms a straight slide rail and a pair of forked arc slide rails, and the pair of forked arc slide rails are respectively provided with a first guide post and a second guide post. The first guide post and the second guide post are both connected to the circuit breaker key, and the connecting member is connected to the time delay drive mechanism.

[0010] Furthermore, the clamping frame is a U-shaped clamping frame, and the inner wall of the U-shaped clamping frame is provided with a full-surface anti-slip soft pad.

[0011] Furthermore, the force center of the U-shaped clamping frame coincides with the central axis of the circuit breaker key.

[0012] Furthermore, the third elastic device is a storage spring that stores and releases energy. The upper end of the third elastic device is fixedly connected to the connecting member, and the lower end of the third elastic device is fixed to the base. When the time-delay drive mechanism operates at low speed, the clamping frame surrounds the circuit breaker switch and is centered and aligned. The time-delay drive mechanism drives the connecting member to rise and compress the energy stored in the third elastic device. When the time-delay drive mechanism operates at high speed, the time-delay drive mechanism drives the connecting member to descend and release the energy of the third elastic device, pushing the first guide column and the second guide column upward to push the circuit breaker switch to close.

[0013] Furthermore, a bidirectional spring self-locking buckle that matches the installation guide rail of the EMU circuit breaker is installed on the rear side of the housing.

[0014] The human-hand-like automatic reset device for EMU circuit breakers proposed in this invention has the following advantages: 1. The present invention sets the clamping frame for holding and wrapping the circuit breaker key as a U-shaped clamping frame, and sets the force center of the U-shaped clamping frame to coincide with the central axis of the circuit breaker key, so that the U-shaped clamping frame fully covers and centers the clamping structure and fits the center of the key, thus eliminating single-point eccentric pressure slippage and false tripping; 2. This invention achieves segmented speed control of the delayed drive mechanism by setting a stepped pin including a first throttling orifice and a second throttling orifice, and setting the diameter of the second throttling orifice to be larger than the diameter of the first throttling orifice, so as to enable the throttle needle valve to accurately control the speed in segments, achieve short-stroke centering, and achieve extremely fast closing in the later stage, thereby eliminating the closing arc. 3. By setting the Y-shaped guide groove to integrally open a straight slide and a pair of bifurcated arc slides, and the pair of bifurcated arc slides are respectively provided with a first guide post and a second guide post, the present invention realizes automatic force unloading, without continuous load squeezing the handle, and avoids deformation and cracking of the plastic handle; 4. By including an intake connector, an intake observation window, and an adjustment button for adjustable delay time in the throttle needle valve, this invention realizes a visual calibrated throttle needle valve, making the intake intuitive, the debugging parameters quantifiable, and reducing the difficulty of on-site operation and maintenance. 5. The present invention features a bidirectional spring self-locking buckle that matches the mounting rail of the EMU circuit breaker on the rear side of the housing, adapting to multiple specifications of rails. The modular structure is compatible with multiple EMU circuit breakers. The purely mechanical passive design and single-closing protection prevent real equipment failures from causing reverse circuit breakers. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of the automatic reset device for EMU circuit breakers that mimics human hand movements, as described in this invention. Figure 2 This is a schematic diagram of the trigger mechanism structure of the automatic reset device for a high-speed train circuit breaker that mimics human hand movements, as described in this invention. Figure 3 This is a schematic diagram of the delayed drive structure of the human-hand-like automatic reset device for EMU circuit breakers described in this invention; Figure 4 This is a longitudinal cross-sectional view of the delay drive mechanism of the automatic reset device for a high-speed train circuit breaker that mimics human hand movements, as described in this invention. Figure 5 This is a schematic diagram of the stepped pin structure of the human-hand-like automatic reset device for EMU circuit breakers described in this invention; Figure 6 This is a schematic diagram of the fork actuator structure of the automatic reset device for a high-speed train circuit breaker that mimics human hand movements, as described in this invention. Figure 7 This is a cross-sectional view of the fork actuator and the circuit breaker key assembly of the human-hand-like automatic reset device for EMU circuit breakers described in this invention. Figure 8 This is a schematic diagram of the fork actuator pushing the closing structure of the automatic reset device for a high-speed train circuit breaker, which mimics human hand movements, as described in this invention. Figure 9 This is a schematic diagram of the closing operation of the Y-shaped slideway of the automatic reset device for EMU circuit breakers, which mimics human hand movements, as described in this invention. Figure 10 This is a schematic diagram of the Y-shaped chute unloading operation of the automatic reset device for EMU circuit breakers described in this invention, which mimics human hand movements. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] like Figure 1As shown, one embodiment of the present invention provides a human-hand-like automatic reset device for a circuit breaker of a high-speed train, comprising: a housing 1, a triggering mechanism 3 mounted on the housing 1 and triggered by a circuit breaker 2, a time-delay drive mechanism 4 mounted on the housing 1 and connected to the triggering mechanism 3, and a shift fork actuator 5 connected to the time-delay drive mechanism 4. The shift fork actuator 5 clamps and wraps around the circuit breaker key 201. When the circuit breaker 2 trips, the circuit breaker key 201 falls, triggering the triggering mechanism 3 to operate. The triggering mechanism 3 triggers the time-delay drive mechanism 4 to operate at segmented speed control. When the time-delay drive mechanism 4 operates at low speed, it drives the shift fork actuator 5 to wrap around the circuit breaker key 201 for centering and to store energy. When the time-delay drive mechanism 4 switches to high speed, it drives the shift fork actuator 5 to release energy, causing the shift fork actuator 5 to push the circuit breaker key 201 to close and lock. Then, it drives the shift fork actuator 5 to flip outward and disengage from the circuit breaker key 201 to achieve automatic mechanical unloading.

[0018] Furthermore, such as Figure 2 As shown, the triggering mechanism 3 includes a shaft 31 installed inside the housing 1, a trigger fork 32 installed on the shaft 31, a locking piece 33 connected to the trigger fork 32, and a torsion spring 34 disposed on the shaft 31. The locking piece 33 is connected to the delay drive mechanism 4. When the circuit breaker lever 201 falls, it triggers the trigger fork 32 to press down, which drives the locking piece 33 to work and trigger the delay drive mechanism to operate in segments with controlled speed.

[0019] Furthermore, such as Figure 3 and Figure 4As shown, the delay drive mechanism 4 includes a cylinder 401, a piston 402 installed inside the cylinder 401, a seal 403 disposed on the piston 402, a piston rod 404 installed at one end inside the cylinder 401 and connected to the piston 402, a first elastic device 405 fitted on the piston rod 404, a throttle needle valve 406 installed at the other end inside the cylinder 401, a second elastic device 407 fitted on the throttle needle valve 406, and a reset button 408 installed on the top of the housing 1 and fixedly connected to the piston rod 404. The piston rod 404 is connected to the retaining element 33, and the retaining element 33 triggers the piston rod 404 to run. The running of the piston rod 404 drives the first elastic device 405 to work and drive the piston 402 to run. The seal 403 is an O-ring used to maintain airtightness, ensuring the airtightness between the inner wall of the cylinder 401 and the piston 402, forming a relatively sealed space. The first elastic device 405 and the second elastic device 407 shown are both compression springs. Of course, the first elastic device and the second elastic device can also be other elastic devices, as long as they have elasticity, they are all within the protection scope of this invention. The reset button 408 is used to realize the automatic return and locking of all components of the whole machine without the need for additional auxiliary disassembly and assembly tools. Pressing the reset button 408 can push the piston rod 404 down to reset. The automatic return and locking of all components of the whole machine includes the automatic return and locking of all components such as the time-delay drive mechanism 4, the internal piston rod 401, the first elastic device 405, the connecting piece 505, the third elastic device 504, the shift fork actuator 5 and its reset state, the first guide post 507, the second guide post 508 and the circuit breaker lever key 201 reset state, the throttle needle valve 406 and its adjustment button 4064 reset state, etc.

[0020] Furthermore, such as Figure 5 As shown, the throttle needle valve 406 includes a stepped pin 4061 connected to the second elastic device 407. The stepped pin 4061 includes a first stepped portion 40611 and a second stepped portion 40612 connected to the first stepped portion 40611. A first throttling orifice 40613 is provided on the first stepped portion 40611, and a second throttling orifice 40614 communicating with the first throttling orifice 40613 is provided on the second stepped portion 40612. The diameter of the second throttling orifice 40614 is larger than the diameter of the first throttling orifice 40613. The stepped ejector pin 4061 is an axially floating stepped ejector pin. When the piston rod 404 travels the first 1 / 3 of its stroke, the first throttling orifice 40613 blocks the flow, creating a high-damping, low-speed centering condition, and the cylinder runs at low speed. When the piston rod 404 travels more than 1 / 3 of its stroke, the second throttling orifice 40614 opens, the damping of the cylinder 401 drops sharply, the flow area increases sharply, and the cylinder runs at high speed to achieve rapid feeding for the remaining stroke. The stepped ejector pin design allows for precise segmented speed control, short-stroke centering, and extremely fast closing in the later stroke, eliminating closing arcs.

[0021] Furthermore, such as Figure 1 As shown, the throttle needle valve 406 also includes an intake connector 4062, an intake observation window 4063, and an adjustable delay time adjustment button 4064. The intake connector 4062, the intake observation window 4063, and the adjustment button 4064 are all located on the outer side of the housing 1. The intake connector 4062 is connected to an external air source pipeline. The intake observation window 4063 communicates with the internal air chamber of the throttle needle valve 406 for observing air pressure or flow rate. The adjustment button 4064 adjusts the delay time by rotating to adjust the opening of the stepped pin 4061 inside the throttle needle valve 406. The intake observation window and adjustment button make the intake process intuitive, quantify the debugging parameters, and reduce the difficulty of on-site operation and maintenance.

[0022] Furthermore, such as Figures 6 to 10As shown, the shift fork actuator 5 includes a clamping frame 501 for clamping and wrapping the circuit breaker key 201, a horizontal shift fork portion 502 fixedly connected to the clamping frame 501, a vertical shift fork portion 503 vertically connected to the horizontal shift fork portion 502 to form the shift fork, a third elastic device 504 hinged to the vertical shift fork portion 503 and fixedly connected to the clamping frame 501, and a connecting member 505 connected to the third elastic device 504. The vertical shift fork portion 504 is provided with a Y-shaped guide groove 506 for guiding related driving components. The Y-shaped guide groove 506 integrally forms a straight slide rail and a pair of forked arc-shaped slide rails. A first guide post 507 and a second guide post 508 are respectively provided on the pair of forked arc-shaped slide rails, and the first guide post 507 and the second guide post 508 are evenly connected to the circuit breaker key 201. The shift fork formed by the horizontal shift fork portion and the vertical shift fork portion has a floating reset function. The third elastic device 504 is a storage spring that stores and releases energy. The upper end of the third elastic device 504 is fixedly connected to the connecting member 505, and the lower end is fixed to the base. The connecting member 505 is connected to the piston rod 404. When the time-delay drive mechanism 4 operates at low speed, the clamping frame 501 surrounds the circuit breaker key 201 and centers it. The piston rod 404 drives the connecting member 505 to rise, compressing the storage spring to store energy. When the time-delay drive mechanism 4 operates at high speed, the piston rod 404 drives the connecting member 505 to descend, releasing the energy of the storage spring and pushing the first guide post 507 and the second guide post 508 upward to close the circuit breaker key 201. After closing and locking, the first guide post 507 is limited, and the second guide post 508 slides into the arc-shaped slide rail, driving the clamping frame 501 to flip outward and disengage from the circuit breaker key 201, achieving automatic mechanical unloading. The clamping frame 501 is a U-shaped clamping frame, and the inner wall of the U-shaped clamping frame is provided with a full-surface anti-slip soft pad. The anti-slip soft pad is a polyurethane anti-slip soft pad. The force center of the U-shaped clamping frame coincides with the central axis of the circuit breaker key. The U-shaped clamping frame fully encloses and centers the clamping structure, which fully fits the center of the circuit breaker key, eliminating single-point eccentric pressure slippage and incomplete tripping.

[0023] Furthermore, such as Figure 1 As shown, a bidirectional spring self-locking buckle 6 is installed on the rear side of the housing, which matches the EMU circuit breaker mounting rail. The buckle is compatible with two standard EMU circuit breaker mounting rails of 35mm and 75mm.

[0024] The working process of the human-hand-like automatic reset device for EMU circuit breakers described in this invention is as follows: When circuit breaker 2 trips unexpectedly, the circuit breaker key 201 drops, pressing down the trigger fork 32 of the trigger mechanism 3. The trigger fork 32 then engages the locking mechanism 33, which in turn drives the piston rod 404. The piston rod 404 then moves the first elastic device 405, driving the piston 402 upwards. During the first 1 / 3 of the piston rod 404's stroke, the first throttling orifice 40613 on the stepped pin 4061 throttles the flow, causing the cylinder 401 to operate at low speed. The U-shaped clamping frame 501 encloses the circuit breaker key 201, positioning it centrally. The piston rod 404 then drives the connecting piece 50. 5. The piston rod 404 compresses the energy storage spring. After the piston rod 404 exceeds 1 / 3 of its stroke, the second throttle hole 40614 on the stepped pin 4061 opens, the damping of the cylinder 401 drops sharply, and the piston rod 404 drives the connecting piece 505 to descend and release the energy of the energy storage spring. This pushes the first guide post 507 and the second guide post 508 to move upward and push the circuit breaker lever 201 to close the circuit. After the circuit breaker is locked, the first guide post 507 is limited, the second guide post 508 slides into the arc-shaped slide, and the clamping frame 501 disengages from the circuit breaker lever 201 to automatically unload the force. The entire machine is reset and locked by using the reset button 408 again. This invention achieves three-stage human-like action: short-distance centering and leveling, instantaneous and rapid closing, and automatic unloading upon reaching the target position. It solves the defects of existing technologies such as slippage during unilateral pushing, arcing during closing, handle damage due to pressure, and difficulty in adjusting the needle valve. It is compatible with AC load circuit breakers of CRH380B and CR400 series EMUs. The purely mechanical mechanism requires no external power supply, and resetting only requires pressing the reset button.

[0025] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A human-hand-like automatic reset device for circuit breakers in high-speed trains, characterized in that, include: The enclosure (1), the triggering mechanism (3) mounted on the enclosure (1) and triggered by the circuit breaker (2), the time-delay drive mechanism (4) mounted on the enclosure (1) and connected to the triggering mechanism (3), and the shift fork actuator (5) connected to the time-delay drive mechanism (4); the shift fork actuator (5) clamps and wraps the circuit breaker key (201), the circuit breaker (2) trips, the circuit breaker key (201) falls to trigger the triggering mechanism (3) to work, and the triggering mechanism (3) triggers the time-delay drive mechanism (4). 4) Segmented speed control operation: When the delay drive mechanism (4) is running at low speed, it drives the shift fork actuator (5) to wrap the circuit breaker key (201) to center and align, and drives the shift fork actuator (5) to store energy. When the delay drive mechanism (4) switches to high speed operation, the delay drive mechanism (4) drives the shift fork actuator (5) to release energy so that the shift fork actuator (5) pushes the circuit breaker key (201) to close and lock, and then drives the shift fork actuator (5) to flip outward and disengage from the circuit breaker key (201) to achieve automatic mechanical unloading.

2. The human-manual automatic reset device for a circuit breaker in a high-speed train as described in claim 1. Its features are, The triggering mechanism (3) includes a shaft (31) installed inside the housing, a trigger fork (32) installed on the shaft (31), a clip (33) connected to the trigger fork (32), and a torsion spring (34) provided on the shaft (31). The clip (33) is connected to the delay drive mechanism (4). When the circuit breaker key (201) falls, it triggers the trigger fork (32) to press down, which drives the clip (33) to work and trigger the delay drive mechanism (4) to run in segments with controlled speed.

3. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 1, characterized in that, The delay drive mechanism (4) includes a cylinder (401), a piston (402) installed in the cylinder (401), a seal (403) provided on the piston (402), a piston rod (404) installed at one end in the cylinder (401) and connected to the piston (402), a first elastic device (405) fitted on the piston rod (404), a throttle needle valve (406) installed at the other end in the cylinder (401), a second elastic device (407) fitted on the throttle needle valve (406), and a reset button (408) installed on the top of the housing (1) and fixedly connected to the piston rod (404). The piston rod (404) is connected to the trigger mechanism (3). The trigger mechanism (3) triggers the piston rod (404) to run. The running of the piston rod (404) drives the first elastic device (405) to work and drive the piston (402) to run.

4. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 3, characterized in that, The throttle needle valve (406) includes a stepped pin (4061) connected to the second elastic device (407). The stepped pin (4061) includes a first stepped portion (40611) and a second stepped portion (40612) connected to the first stepped portion (40611). A first throttle orifice (40613) is provided on the first stepped portion (40611), and a second throttle orifice (40614) communicating with the first throttle orifice (40613) is provided on the second stepped portion (40612). The diameter of the second throttle orifice (40614) is larger than the diameter of the first throttle orifice (40613).

5. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 4, characterized in that, The throttle needle valve (406) also includes an air inlet connector (4062), an air inlet observation window (4063), and an adjustment button (4064) with adjustable delay time. The air inlet connector (4062), the air inlet observation window (4063), and the adjustment button (4064) are all located outside the housing (1). The air inlet connector (4062) is connected to an external air source pipeline, the air inlet observation window (4063) is connected to the internal air chamber of the throttle needle valve (406), and the adjustment button (4064) is used to rotate and adjust the opening degree of the stepped pin (4061) inside the throttle needle valve (406).

6. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 1, characterized in that, The shift fork actuator (5) includes a clamping frame (501) for clamping the circuit breaker key (201), a horizontal shift fork portion (502) fixedly connected to the clamping frame (501), a vertical shift fork portion (503) vertically connected to the horizontal shift fork portion (502) to form the shift fork, a third elastic device (504) hinged to the vertical shift fork portion (503) and fixedly connected to the clamping frame (501), and a connecting member connected to the third elastic device (504). 505), the vertical part (503) of the shift fork is provided with a Y-shaped guide groove (506), the Y-shaped guide groove (506) is integrally opened with a straight slide and a pair of bifurcated arc slides, the pair of bifurcated arc slides are respectively provided with a first guide post (507) and a second guide post (508), the first guide post (507) and the second guide post (508) are both connected to the circuit breaker key (201), and the connecting piece (505) is connected to the time delay drive mechanism (4).

7. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 6, characterized in that, The clamping frame (501) is a U-shaped clamping frame, and the inner wall of the U-shaped clamping frame is provided with a full-surface anti-slip soft pad.

8. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 7, characterized in that, The force center of the U-shaped clamping frame coincides with the central axis of the circuit breaker key (201).

9. The human-hand-like automatic reset device for a circuit breaker in a high-speed train according to claim 6, characterized in that, The third elastic device (504) is a storage spring that stores and releases energy. The upper end of the third elastic device (504) is fixedly connected to the connector (505), and the lower end of the third elastic device (504) is fixed on the base. When the time-delay drive mechanism (4) runs at low speed, the clamping frame (501) wraps around the circuit breaker key (201) and aligns it. The time-delay drive mechanism (4) drives the connector (505) to rise and compress the third elastic device (504) to store energy. When the time-delay drive mechanism (4) runs at high speed, the time-delay drive mechanism (4) drives the connector (505) to fall and release the energy of the third elastic device (504) to push the first guide column (507) and the second guide column (508) to rise and push the circuit breaker key (201) to close.

10. The automatic reset device for a circuit breaker of a high-speed train according to claim 1, characterized in that, The rear side of the outer casing (1) is equipped with a bidirectional spring self-locking buckle (6) that matches the installation guide rail of the EMU circuit breaker.

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