WO2017054763A1

WO2017054763A1 - Locking structure of safety footstep for rail transit platform

Info

Publication number: WO2017054763A1
Application number: PCT/CN2016/100963
Authority: WO
Inventors: 史和平; 尹显鳌; 张朝营
Original assignee: 上海嘉成轨道交通安全保障系统股份公司
Priority date: 2015-09-30
Filing date: 2016-09-29
Publication date: 2017-04-06
Also published as: CN105438185B; CN105438185A

Abstract

Provided is a locking structure (500) of a safety footstep for a rail transit platform, comprising a lock seat (501), a main lock hook (504), a sub lock hook (505) and an unlocking lever (506), wherein the lock seat (501) is fixed onto a fixed frame base (401); the main lock hook (504) and the sub lock hook (505) are rotatably mounted on the lock seat (501) and rotate with respect to each other to form a locking or unlocking relation; the position of the main lock hook corresponds to the position of a lock catch (507) on a sliding frame (402), and when the sliding frame telescopically moves in place, the lock catch (507) on the sliding frame is locked into the main lock hook and drives the main lock hook to rotate to form a locking relation with the sub lock hook; and the unlocking lever is movably mounted on the lock seat, and one end of the unlocking lever is drivingly connected to the sub lock hook and then drives the sub lock hook to rotate, thereby completing unlocking between the main lock hook and the sub lock hook. By this locking structure, the safety footstep performs a physical locking automatically when telescopically moving in place, and achieves an unlocking automatically when required to be moved, thus improving operation safety of the safety footstep for the platform.

Description

Locking structure of safety pedal of rail transit platform

Technical field

The present application relates to the field of rail transit, and in particular to a locking structure of a safety pedal of a rail transit platform.

Background technique

In the process of rail transit construction, in order to ensure the safe driving of the train, there will always be a certain gap between the platform and the train body, which will bring certain safety hazards to the passengers. When the passenger gets on and off the vehicle, it is easy to be tripped by the gap, or the foot is stuck in the gap due to the emptying. In order to solve this problem, some existing railroad crossing lines are equipped with a fixed rubber pedal at the edge of the platform to reduce the gap between the platform and the train body. At the same time, even if friction occurs with the pedal during the running of the train, It is not easy to damage the car body.

Summary of the invention

The technical problem to be solved in some embodiments of the present application is to provide a locking structure for the safety pedal of the rail transit platform, so that when the safety pedal moves and retracts into position, the mechanical locking is automatically performed, and when the movement needs to be moved, the automatic locking can be performed to ensure the safety of the platform. The safety of the pedal operation.

In order to solve the above technical problem, an embodiment of the present application provides a rail transit platform safety pedal locking structure, the platform safety pedal includes a fixed frame base, a sliding frame extending along the guide rail or retracting the fixed frame base a pedal member fixed to the front end of the sliding frame;

The locking structure includes a lock seat, a first main lock hook, a first pay hook and an unlocking lever;

The lock seat is fixed on the fixed frame base; the first main lock hook and the first pay hook are rotatably mounted on the lock seat, and the first main lock hook and the first pay hook are rotated Forming a locking or unlocking relationship, wherein the first main locking hook and the first pay-locking hook are respectively mounted with a return spring; the first main The position of the locking hook corresponds to the first locking position on the sliding frame, and after the sliding frame is telescopically moved to the first position, the first locking buckle is buckled into the first main locking hook to push the The first main locking hook rotates to form a locking relationship with the first pay hook;

The unlocking lever is movably mounted on the lock seat, and one end of the unlocking lever is connected to the first pay hook, and the telescopic expansion of the unlocking lever pushes the first pay hook to rotate, and the Unlocking between the first primary locking hook and the first secondary locking hook.

In one example, the locking structure further includes a second primary locking hook and a second secondary locking hook;

The second main lock hook and the second pay hook are rotatably mounted on the lock seat, and the opening directions of the second main lock hook and the second pay hook are opposite to the first main lock hook and the first pay The lock hook is opposite; the second main lock hook and the second pay hook are rotated to form a locking or unlocking relationship, and the second main hook and the second pay hook are respectively mounted with a return spring; The position of the second main locking hook corresponds to the second locking position on the sliding frame, and after the sliding frame is moved to the second position, the second locking buckle is buckled into the second main locking hook to push the The second main lock hook rotates to form a locking relationship with the second pay hook;

An end of the unlocking lever that is connected to the first pay hook is also connected to the second pay hook, and the telescopic expansion of the unlocking lever pushes the second pay hook to rotate. The unlocking between the two main lock hooks and the second pay hook.

In one example, the first position is a position in which the sliding frame protrudes into position, and the second position is a position at which the sliding frame is retracted to a position.

In one example, the first position is a position at which the sliding frame is retracted to a position, and the second position is a position at which the sliding frame protrudes into position.

In one example, one end of the unlocking lever is drivingly connected to the first pay hook, and the other end is connected to an electromagnet, and the telescopic expansion of the unlocking rod is pushed by the expansion and contraction of the electromagnet; or

In one example, one end of the unlocking lever is connected to the first pay hook and the other end is connected to a brake switch of the motor brake, and the unlocking lever is driven by the opening or closing of the brake switch. Telescopic.

In an example, the locking structure further includes an unlocking signal switch mounted on the locking seat Corresponding to the position of the unlocking lever, the unlocking lever triggers the unlocking signal switch in an extended unlocking state, and the signal output end of the unlocking signal switch is connected to the controller.

In one example, the end of the unlocking lever is mounted with a first driving pin, and the first driving pin is connected to the first auxiliary locking hook, and the locking seat is provided with a first waist hole. The first drive pin passes through the first waist hole and moves within the first waist hole.

In one example, the end of the unlocking lever is mounted with a second driving pin, and the second driving pin is connected to the second auxiliary locking hook, and the locking seat is provided with a second waist hole. The second drive pin passes through the second waist hole and moves within the second waist hole.

In one example, the contact surface of the first main locking hook with the first pay hook is beveled or curved.

In one example, the contact surface of the second main lock hook and the second pay hook is a beveled or curved surface.

In one example, a manual unlocking component and an unlocking rotating arm are further included. The manual unlocking component and the unlocking rotating arm are respectively rotatably coupled to the fixed frame base, and the manual unlocking component and the unlocking rotating arm form a rotation. In the interlocking manner, a reset spring is respectively mounted on the manual unlocking component and the unlocking rotating arm, and the unlocking rotating arm is connected to the unlocking lever, and the manual unlocking component is rotated by an external force to drive the unlocking rotating arm. Rotation occurs to push the unlocking lever to move telescopically.

In an example, an unlocking pin is vertically inserted in a central portion of the rotation of the manual unlocking component, and the unlocking pin is externally connected with a wrench, and the trigger is driven by an external force to rotate the unlocking pin, and is driven by the unlocking pin. The manual unlocking assembly rotates.

In one example, the manual unlocking component includes a transmission arm, and the sliding frame is provided with a reset fulcrum. After the manual unlocking component is rotated to a preset angle, the reset fulcrum is contacted to the reset The fulcrum is the point of force, and the sliding frame is retracted.

Compared with the prior art, some of the main embodiments of the present application have the following advantages: a locking structure is provided on the platform safety pedal, including a lock seat, a first main lock hook, a first pay hook and an unlocking lever; The seat is fixed on the fixed frame base; the first main lock hook and the first pay hook are rotatably mounted on the lock seat, and the first main lock hook and the first pay hook are rotated to form a locking or unlocking relationship, and in the two locks a return spring is respectively mounted on the hook; the position of the first main lock hook corresponds to the position of the first lock on the sliding frame, and the sliding After the frame is telescopically moved to the first position, the first lock buckle is buckled into the first main lock hook, and the first main lock hook is rotated to form a locking relationship with the first pay hook; the unlocking rod is telescopically movable and mounted on the lock seat. Upper end of the unlocking lever is connected to the first pay hook, and the expansion and contraction of the unlocking lever pushes the first pay hook to rotate, and unlocks between the first main hook and the first pay hook. Through the locking structure, when the safety pedal moves and retracts into position, the physical lock can be automatically performed. When the movement needs to be moved, the unlocking lever can be automatically unlocked to ensure the safety of the platform safety pedal operation.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of a safety pedal mounted in a station provided in a portion of an embodiment of the present application by way of example.

2 is a schematic illustration of a safety pedal in an extended state provided in some embodiments of the present application by way of example.

3 is a schematic illustration of a safety pedal in a retracted state provided in some embodiments of the present application by way of example.

4 is an overall structural view of a platform safety pedal provided in some embodiments of the present application by way of example.

Figure 5 is a top plan view (including an electromagnet) of a platform safety pedal locking structure provided in some embodiments of the present application by way of example.

Figure 6 is a bottom plan view (without electromagnets) of a platform safety pedal locking structure provided in some embodiments of the present application by way of example.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more clear, the following And some embodiments of the present invention are further described in detail. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The inventors of the present application found in the process of implementing the present invention that the prior art has the following disadvantages:

First of all, although the gap between the platform and the car body is reduced, it still exists, and there are still hidden dangers. This problem is particularly prominent for disabled people, infants, and women wearing high heels.

Secondly, during the running of the train, friction and impact are easily generated between the car body and the pedals (such as rubber pedals), which accumulate in the long-term and easily damage the train. Moreover, the damage rate of the platform pedal is relatively high, and the maintenance cost is high in the later stage.

In this regard, the inventors of the present application have developed a telescopic rail transit platform safety pedal. For the telescopic safety pedal, the locking function in the extended or retracted state is indispensable. In the prior art, the motor brake (locking motor) is generally used to restrict the movement of the safety pedal, but the method is actually There is still a security hole in use, and the locking or unlocking function cannot be guaranteed in the sudden state of control system failure, motor failure, or power failure. In this regard, a mechanical locking structure is provided in some embodiments of the present application.

A portion of the embodiment described herein by way of example provides a rail transit platform safety pedal locking structure. Among them, the platform safety pedal is used to fill the gap between the rail transit platform and the train door, to prevent the passenger from being tripped by the gap when getting on or off the vehicle, or to get stuck in the gap due to the stepping. The safety pedal is mounted on the edge of the platform as shown in Figure 1. The safety pedal has two states of extension and retraction, as shown in FIG. 1 and FIG. 2 respectively. When the train enters the station and the door is opened, the safety pedal is extended to ensure a seamless connection between the platform and the door; Before the train starts, the safety pedal is retracted to the platform. During the running of the train, the safety pedal is retracted to ensure a certain gap between the platform and the vehicle body to ensure safe driving of the train.

The structure of the safety pedal will be briefly described below. As shown in FIG. 4, the safety pedal includes a fixed frame base 401, a sliding frame 402 and a pedal member 403. The pedal member 403 is fixed to the front end of the sliding frame 402. The sliding frame 402 is placed in the fixed frame base 401, and is slidably connected to the fixed frame base 401 through a guide rail and a guiding device (such as a roller), and guided by the guide rail and the guiding device. The sliding frame 402 extends horizontally and retracts the fixed frame base 401. Figure 4 shows an overall schematic view (including the locking structure) of the sliding frame 402 and the pedal member 403 in an extended position.

A driving motor 404 is fixed on the fixed frame base 401. A rack 405 is fixed on the sliding frame 402 along the expansion and contraction direction of the sliding frame. The rack 405 is driven by the driving motor 404 to push the sliding frame 402 to extend or retract the fixed frame base 401. The fixed frame base 401 is covered with a load bearing cover for the passenger to stand.

The following describes the platform safety pedal locking structure of the embodiment. The platform safety pedal locking structure 500 is located at the left rear area of the fixed frame base 401. The specific structure is as shown in FIG. 5 (FIG. 5 shows the overall structure of the locking structure from a top view. The lock 501, the main lock hook 502, the pay lock hook 503, the main lock hook 504, the pay lock hook 505, the unlocking lever 506; wherein, the main lock hook 502, the pay lock hook 503 and the main lock hook 504, the lock The hooks 505 have opposite openings and are symmetrical to each other. The main locking hook 502 and the pay-locking hook 503 are used for locking when the sliding pedal (sliding frame) is extended into position, and the main locking hook 504 and the pay-locking hook 505 are used for locking when the sliding pedal (sliding frame) is retracted. In practical applications, it is also possible to include only one set of main lock hooks and pay lock hooks, and only lock in a single state.

Specifically, the lock base 501 is fixedly mounted on the fixed frame base 401; the main lock hook 502 and the pay lock hook 503 are rotatably mounted on the lock base 501, and the main lock hook 502 and the pay lock hook 503 are rotated to form a locking or unlocking relationship. A reset spring is respectively mounted on the main lock hook 502 and the pay lock hook 503; the position of the main lock hook 502 corresponds to the position of the extended position lock (ie, the first lock) on the sliding frame 402 (in order to avoid occlusion, in the figure) The extended position lock is not shown. After the slide frame 402 is extended to the preset fixed position, the extended position lock buckles into the main lock hook 502, and the main lock hook 502 is pushed to rotate, forming a lock hook 503. In the locking relationship, after the main locking hook 502 is locked, a locking relationship is also formed between the main locking hook 502 and the extended in-position locking buckle. The sliding frame 402 realizes locking and cannot move telescopically.

In FIG. 5, the main locking hook 502 is provided with an arc-shaped upper arm and an arc-shaped lower arm, and a limiting slot is formed between the upper and lower arms. After the sliding frame 402 protrudes to a predetermined fixed position, the extension on the sliding frame The out-of-position latch hits the limit slot of the main lock hook 502, pushing the main lock hook 502 to rotate counterclockwise, the main lock The upper arm of the hook 502 is inserted into the lock groove of the lock hook 503 to form a locking relationship with the pay lock hook 503. After the main lock hook 502 is locked, the lower arm of the main lock hook 502 forms a locking relationship with the extended position lock. The contact surface of the main lock hook 502 and the payout hook 503 is inclined or curved, so that the main lock hook 502 can easily be caught in the lock groove of the lock hook 503.

Similarly, the main lock hook 504 and the pay lock hook 505 are rotatably mounted on the lock base, and the opening directions of the main lock hook 504 and the pay lock hook 505 are opposite to the main lock hook 502 and the pay lock hook 503; the main lock hook 504 and the pay lock hook Between the 505, a locking or unlocking relationship is formed by rotation, and the main locking hook 504 and the pay-locking hook 505 are respectively mounted with a return spring; the position of the main locking hook 504 and the retracted position latch 507 on the sliding frame (second locking) Corresponding to the position, after the sliding frame is retracted to the fixed position, the retracted position buckle 507 is buckled into the main locking hook 504, and the main locking hook 504 is pushed to rotate, forming a locking relationship with the auxiliary locking hook 505, and the main locking hook 504 is locked. A locking relationship is also formed between the main locking hook 504 and the retracted position buckle. The sliding frame 402 realizes locking and cannot move telescopically. The locking structure of FIG. 5 is retracted to the state in which the position latch 507 is snapped into the main locking hook 504 after the sliding frame is retracted.

The unlocking rod 506 is telescopically mounted on the lock base 501 by a bracket. One end of the unlocking rod 506 is respectively connected with the pay hook 503 and the pay hook 505, and the other end is connected to the electromagnet 508 by the electromagnet 508. The telescopic expansion pushes the expansion and contraction of the unlocking lever 506, and the expansion and contraction of the unlocking lever 506 pushes the lock hook 503 and the payout hook 505 to rotate, completing the main lock hook 502 and the payout hook 503, and between the main lock hook 504 and the pay lock hook 505. Unlocking, the position of the main locking hook 502 and the main locking hook 504 is no longer limited, and further rotation occurs under the traction of the return spring, releasing the latch currently locked into the locking slot, the sliding frame 402 is completely unlocked, and can be extended and contracted. motion. In a specific application, the end of the unlocking lever 506 can be respectively mounted with a driving pin for the position of the locking hooks 503 and 505, and is connected to the locking hooks 503 and 505 through the driving pin, and the position of the locking seat 501 corresponding to the driving pin. A waist hole is respectively disposed, and the driving pin passes through the waist hole to move in the range of the waist hole, thereby realizing the driving connection of the unlocking lever 506 with the lock hook 503 and the pay hook 505. In order to more clearly demonstrate the locking structure, FIG. 6 shows the overall structure of the locking structure from a bottom view. In FIG. 6, the drive pin 601 is movably coupled to the unlocking lever 506 and the payout hook 503, and the drive pin 602 is movably coupled to the unlocking lever 506 and Pay the lock hook 505.

In practical applications, the unlocking lever 506 can be directly driven with the electromagnet 508 or indirectly through other intermediate structures. In FIG. 5, a rotatable unlocking rotating arm 509 is mounted on the lock base 501. The unlocking rotating arm 509 and the unlocking rod 506 are movably connected by a driving pin. The unlocking rotating arm 509 includes a protruding fulcrum 5091. The pivot point 5091 and the electromagnetic point The iron core of the iron 508 is close to each other. When the electromagnet 508 is energized and extended, the fulcrum 5091 on the unlocking rotating arm 509 is pushed to unlock, and the unlocking rotating arm 509 is rotated clockwise. The unlocking rotating arm 509 pushes the unlocking rod 506 through the driving pin to trigger the unlocking. The lever 506 is unlocked.

In one example, in order to simplify the design, reduce the components used, and reduce the overall failure rate of the locking structure, in the present embodiment, the electromagnet 508 may not be mounted. As shown in FIG. 6, the end of the unlocking rod 506 is passed. The wire rope is connected to the brake switch of the brake 603 on the drive motor 404, and the opening and closing of the brake switch drives the expansion and contraction of the unlocking lever 506.

In an example, as shown in FIG. 6, the locking structure further includes a proximity switch 604 (unlocking signal switch) mounted on the lock base 501 corresponding to the position of the unlocking lever 506, and the unlocking lever 506 is extended. (ie, in the unlocked state), the proximity switch 604 is touched to generate a signal, and the signal output of the proximity switch 604 is connected to the controller.

In one example, the locking structure further includes a manual unlocking assembly 510. As shown in FIG. 5, the manual unlocking assembly 510 and the unlocking rotating arm 509 are rotatably coupled to the fixed frame base 401, the manual unlocking assembly 510 and the unlocking rotating arm 509, respectively. The rotation linkage is formed, that is, the rotation of the manual unlocking component 510 can push the unlocking rotating arm 509 to rotate, and the manual unlocking component 510 and the unlocking rotating arm 509 are respectively mounted with a return spring, and the unlocking rotating arm 509 and the unlocking lever 506 pass through. In the driving pin transmission connection, in FIG. 5, when the manual unlocking assembly 510 is rotated clockwise by the external force, the unlocking rotating arm 509 is driven to rotate synchronously, and the unlocking lever 506 is pushed and moved to the direction of the locking hooks 503 and 505. The expansion and contraction of the unlocking lever 506 pushes the lock hook 503 and the payout hook 505 to rotate, completing the unlocking between the main lock hook 502 and the pay lock hook 503, and the main lock hook 504 and the pay lock hook 505.

In one example, in a particular implementation, the center of rotation of the component 510 can be manually unlocked. The unlocking pin is externally inserted into the unlocking pin, and the unlocking pin is externally connected with a wrench. After the external force is applied, the unlocking pin is rotated, and the unlocking pin drives the manual unlocking component 510 to rotate.

In one example, the manual unlocking component 510 includes a transmission arm 511. The sliding frame is provided with a reset fulcrum 512 (see FIG. 6, FIG. 5 is a top view angle, the reset fulcrum is blocked), and the manual unlocking component 510 is rotated to the preset. After the angle, the transmission arm 511 is in contact with the reset fulcrum 512. As the transmission arm 511 rotates, the reset fulcrum 512 will receive an inwardly retracting force, so that the reset fulcrum 512 can be used as the force point to retract the sliding frame. . With the above structure, it is possible to ensure that the sliding pedal can be manually unlocked and retracted in a sudden state, thereby ensuring the safety of traveling of the subway vehicle.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced by the equivalents. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A locking structure for a safety pedal of a rail transit platform, wherein the platform safety pedal comprises: a fixed frame base, a sliding frame extending or retracting the fixed frame base along the guide rail, and a pedal member fixed to the front end of the sliding frame;

The locking structure comprises: a lock seat, a first main lock hook, a first pay hook and an unlocking lever;

Wherein the lock seat is fixed on the fixed frame base; the first main lock hook and the first pay hook are rotatably mounted on the lock seat, the first main lock hook and the first pay hook Relating to form a locking or unlocking relationship, the first main locking hook and the first detent hook are respectively mounted with a return spring; the position of the first main locking hook is opposite to the first locking position on the sliding frame Correspondingly, after the sliding frame is telescopically moved to the first position, the first locking buckle is buckled into the first main locking hook, and the first main locking hook is driven to rotate to form a locking relationship with the first locking hook. ;

The unlocking lever is movably mounted on the lock seat, and one end of the unlocking lever is connected to the first pay hook, and the telescopic expansion of the unlocking lever pushes the first pay hook to rotate. The unlocking between the first main locking hook and the first pay hook.
The locking structure according to claim 1, wherein the locking structure further comprises a second main locking hook and a second pay hook;

The second main lock hook and the second pay hook are rotatably mounted on the lock seat, and the opening directions of the second main lock hook and the second pay hook are opposite to the first main lock hook and the first pay The lock hook is opposite; the second main lock hook and the second pay hook are rotated to form a locking or unlocking relationship, and the second main hook and the second pay hook are respectively mounted with a return spring; The position of the second main locking hook corresponds to the second locking position on the sliding frame, and after the sliding frame is moved to the second position, the second locking buckle is buckled into the second main locking hook to push the The second main lock hook rotates to form a locking relationship with the second pay hook;

One end of the unlocking lever connected to the first pay hook, and the second pay lock The hook drive is connected, and the expansion and contraction of the unlocking lever pushes the second pay hook to rotate, and the unlocking between the second main hook and the second pay hook is completed.
The locking structure according to claim 1 or 2, wherein the first position is a position in which the sliding frame protrudes into position, and the second position is a position in which the sliding frame is retracted to a position; or

The first position is a position where the sliding frame is retracted to a position, and the second position is a position where the sliding frame protrudes into position.
The locking structure according to claim 1, 2 or 3, wherein one end of the unlocking lever is connected to the first pay hook and the other end is connected to an electromagnet, and is driven by the telescopic expansion of the electromagnet. The expansion and contraction of the unlocking lever; or

One end of the unlocking lever is connected to the first pay hook and the other end is connected to the brake switch of the motor brake, and the opening and closing of the brake switch drives the expansion and contraction of the unlocking lever.
The locking structure according to any one of claims 1 to 4, wherein the locking structure further comprises an unlocking signal switch mounted on the lock seat corresponding to a position of the unlocking lever, the unlocking lever The unlocking signal switch is triggered in an extended unlocking state, and the signal output end of the unlocking signal switch is connected to the controller.
The locking structure according to any one of claims 1 to 5, wherein an end of the unlocking lever is mounted with a first driving pin, and the first driving pin is connected to the first auxiliary locking hook, a first waist hole is disposed on the lock seat, and the first drive pin passes through the first waist hole to move within the first waist hole; and/or

The end of the unlocking lever is mounted with a second driving pin, and the second driving pin is connected to the second auxiliary locking hook, and the locking seat is provided with a second waist hole, the second transmission A pin passes through the second waist hole and moves within the second waist hole.
The locking structure according to any one of claims 1 to 6, wherein a contact surface of the first main locking hook with the first pay hook is beveled or curved; and/or

The contact surface of the second main locking hook and the second pay hook is a sloped or curved surface.
The locking structure according to any one of claims 1 to 7, further comprising a manual unlocking assembly and an unlocking rotating arm, wherein the manual unlocking assembly and the unlocking rotating arm are respectively rotatably coupled to the fixed frame base. A rotation linkage is formed between the manual unlocking component and the unlocking rotating arm, and a reset spring is respectively mounted on the manual unlocking component and the unlocking rotating arm, and the unlocking rotating arm is connected with the unlocking lever, and the manual unlocking The component is rotated by an external force to drive the unlocking rotating arm to rotate, and the unlocking lever is pushed and moved.
The locking structure according to claim 8, wherein an unlocking pin is vertically inserted in a central portion of the rotation of the manual unlocking assembly, the unlocking pin is externally connected with a wrench, and the trigger is rotated by the external force to rotate the unlocking pin. The manual unlocking component is rotated by the unlocking pin.
The locking structure according to claim 8 or 9, wherein the manual unlocking component comprises a transmission arm, the sliding frame is provided with a reset fulcrum, and after the manual unlocking component is rotated to a preset angle, The reset fulcrum is in contact with the reset fulcrum as a force point, and the sliding frame is retracted.