Explosion venting double-locking system

Abstract

The invention relates to an explosion venting double-locking system which comprises an operation part, a seal, an anti-impact locking device and an explosion venting unlocking device, the anti-impact locking device comprises a transmission connecting rod assembly and a plurality of latch mechanisms, when the latch mechanisms are in a locked state, a cabinet door is allowed to be opened to a preset angle and blocked at the angle, and when the latch mechanisms are in an unlocked state, the cabinet door is allowed to be opened to the preset angle and blocked at the angle. Blocking of the cabinet door is completely relieved, the operation part controls all the latch mechanisms to be synchronously switched between the locking state and the unlocking state through the transmission connecting rod assembly, the sealing locking device comprises a transmission assembly and a plurality of point locking mechanisms, the point locking mechanisms are driven to be synchronously unlocked through the transmission assembly, the transmission assembly is provided with an unlocking end and an explosion venting triggering end, and the explosion venting triggering end is provided with an explosion venting opening. The unlocking end can be driven by the operation portion to achieve synchronous unlocking of the point locking mechanisms, the explosion venting unlocking device drives the explosion venting triggering end to complete synchronous unlocking of the point locking mechanisms, and the unlocking process is independent of the operation portion. Pressure relief and explosion-proof requirements are met, and the impact resistance of the cabinet door is ensured while pressure relief is met.

Description

Technical Field

[0001] This invention relates to the field of lock technology, specifically a double locking system with explosion venting function. Background Technology

[0002] During the use of energy storage equipment, when abnormal energy accumulates inside, it is necessary to quickly release the energy inside the equipment to reduce harm. In addition, during the depressurization process, it is essential to ensure that the cabinet door remains reliably locked to prevent the door from being forced open during depressurization.

[0003] Currently, energy storage devices typically employ a linkage lock system. This lock includes an operating unit and a locking device driven by the operating unit. The locking device is a multi-point linkage locking device that connects multiple locking points via linkages, achieving multi-point sealing and locking of the door panel. This type of lock has reliable impact resistance and can effectively lock the door panel. However, with existing linkage lock systems, the equipment must be designed with an independent pressure relief channel, and pressure relief cannot be directly achieved through the cabinet door, resulting in a complex equipment structure and low pressure relief efficiency.

[0004] Therefore, a new type of locking structure is needed that can meet the high impact resistance locking requirements during pressure relief while also taking into account the efficient pressure relief function, in order to address the dual challenges of explosion relief and structural safety in such equipment. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dual-locking system for energy storage and explosion relief that meets both pressure relief and explosion protection requirements. This system locks the cabinet door at a preset opening angle, satisfying pressure relief while ensuring the impact resistance of the cabinet door.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An explosion-proof dual-locking system includes an operating unit and a locking device. The locking device is defined with a locked state and an unlocked state. The locking device includes a sealing locking device for sealing and locking the cabinet door. The sealing locking device includes a transmission component and a plurality of point locking mechanisms connected to the transmission component. The transmission component drives each point locking mechanism to unlock synchronously. The transmission component has an unlocking end and an explosion-proof triggering end. The unlocking end can be driven by the operating unit to realize the synchronous unlocking of each point locking mechanism. It also includes an impact-resistant locking device to resist cabinet door impacts, comprising a transmission linkage assembly connected to the drive end of the operating unit and several latching mechanisms. The latching mechanisms have locked and unlocked states. In the locked state, the cabinet door is allowed to open to a preset angle and is then blocked at that angle. In the unlocked state, the obstruction of the cabinet door is completely released. The operating unit, via the transmission linkage assembly, controls all latching mechanisms to synchronously switch between the locked and unlocked states. It also includes a deflation unlocker, which drives the deflation trigger to complete the synchronous unlocking of the locking mechanisms at each point. The process of unlocking by driving the deflation trigger through the deflation unlocker is independent of the operation unit. When the locking device is in the locked state, both the sealing locking device and the impact-resistant locking device are locked; when the locking device is in the unlocked state, both the sealing locking device and the impact-resistant locking device are unlocked. The locking device also has a venting locking state, in which the sealing locking device is unlocked by the venting unlocker and the impact-resistant locking device is locked.

[0007] Preferably, the locking mechanism is a collision locking mechanism that relies on external force to lock. The transmission component includes an active cable, an actuator mounted on the locking mechanism for driving the locking mechanism to unlock, and a driven cable. One end of the active cable is connected to the actuator of one of the locking mechanisms, and the other end of the active cable is connected to the unlocking end. The actuators of each locking mechanism are connected via the driven cable to achieve linkage unlocking. The explosion venting trigger end and the unlocking end are independent of each other, or the unlocking end can simultaneously serve as the explosion venting trigger end.

[0008] Preferably, the unlocking end of the sealing locking device can be released and reset by the operating part after the locking mechanism is unlocked, so that while the latching mechanism remains unlocked, the locking mechanism is in a collision-lockable state.

[0009] Preferably, the unlocking end includes a traction member movably fitted on the operating part, the traction member defining an initial position held by an elastic restoring force and an unlocking position driven to be reached; The unlocking stroke of the operating unit driving the latch mechanism can be defined as a front section, a middle section, and a rear section that proceed sequentially. The driving end of the operating unit is connected to an unlocking member, which is configured to: engage with the traction member during the middle stroke, allowing the traction member to move to the unlocked position against the elastic restoring force; and disengage from the traction member during the rear stroke, allowing the traction member to complete its reset to the initial position under the action of the elastic restoring force.

[0010] Preferably, the traction component is a traction slider that is slidably fitted on the operating part. The traction slider has a sliding stroke, and the two extremes of the stroke constitute the initial position and the unlocking position, respectively. The active cable is connected to the traction slider, and a slider driving part is provided on the traction slider, which is correspondingly fitted with the unlocking component.

[0011] Preferably, the slider driving part is a protrusion on the traction slider, and the unlocking component includes a driving seat driven by the driving end and movable along the sliding direction of the traction slider, a paddle slidably disposed on the driving seat, and an elastic element that forces the paddle to remain in a protruding state; when the driving seat moves to the middle stroke, the protruding paddle and the protrusion form a pushing engagement to drive the traction slider to move; and when the traction slider is at the limit position of the sliding stroke, the paddle can be pushed by the protrusion to overcome the elastic force and retract, so that the unlocking component passes over the protrusion.

[0012] Preferably, the locking mechanism includes a locking point bracket, a rotating locking fork with a U-shaped locking opening, a locking fork spring, a stop hook for locking the rotating locking fork, and a stop hook spring. The rotating locking fork is pivotally mounted on the locking point bracket and can rotate. The rotating locking fork has an unlocked position and a latched position. Under the action of an external force acting on the U-shaped locking opening, the rotating locking fork rotates from the unlocked position to the latched position, and the locking fork spring stores energy. Driven by the stored energy of the locking fork spring, the rotating locking fork rotates to the unlocked position. The stop hook is pivotally mounted on the locking point bracket and has a normal position. The stop hook spring drives the stop hook to return to the normal position. Under the driving force of the stop hook spring, the stop hook engages with the rotating locking fork in the latched position and maintains the rotating locking fork in the latched position. The actuator is connected to the stop hook and drives the stop hook to disengage from the normal position to unlock the rotating locking fork.

[0013] Preferably, the operating part is a linkage lock, and the driving end is the driving linkage of the linkage lock.

[0014] By adopting the above technical solution, a dual-locking device is used to meet the sealing, locking, and explosion-proof impact resistance requirements of the energy storage equipment. During normal use, when the dual-locking system is engaged, the sealing locking device achieves a sealed lock on the cabinet door, while the impact-resistant locking device remains locked. When abnormal energy accumulates inside the energy storage equipment, the sealing locking device unlocks. After the cabinet door is impacted and opens to a certain angle, the impact-resistant locking device blocks the door, resisting the impact and allowing it to fully spring open, avoiding the risk of damage. Because the door is opened to a certain angle, the energy storage equipment can release the explosion at the cabinet door location.

[0015] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a frontal view of the explosion-proof dual-locking system of the present invention in the locked state; Figure 2 This is a rear-view perspective of the explosion-proof dual-locking system of the present invention in the locked state; Figure 3 This is an unlocking state diagram of the explosion-proof double-locking system of the present invention, which is unlocked via the operation unit (latch mechanism omitted). Figure 4 This is a frontal view of the explosion-proof double-locking system of the present invention in the explosion-proof locked state (latch mechanism omitted). Figure 5 This is a rear-side view of the explosion-proof double-locking system of the present invention in the explosion-proof locking state (latch mechanism omitted). Figure 6 This is a diagram showing the state of the rotating locking fork latch position of the point locking mechanism of the present invention. Figure 7 This is a diagram showing the unlocked position of the rotating locking fork of the point locking mechanism of the present invention (touchable locked state). Figure 8 This is a structural schematic diagram of the unlocking component of the present invention. Detailed Implementation

[0017] See appendix Figures 1-7 A dual-locking explosion-proof system is disclosed, applied to the locking of cabinet doors in energy storage equipment. While meeting the requirements for sealing and impact resistance of the energy storage cabinet, it also allows for explosion venting at the cabinet door, improving venting efficiency and reducing the impact force on the door. The dual-locking explosion-proof system includes an operating unit 1, a locking device, and an explosion-proof unlocking device 2. As shown in the figure, the operating unit 1 is preferably a linkage lock, and the driving end 11 is the driving linkage of the linkage lock. The locking device includes a sealing locking device 3 and an impact-resistant locking device 4; the locking device has a locked state (e.g., Figure 1 and Figure 2 As shown), unlocked status (such as...) Figure 3 (as shown) and explosion venting lockout state (as shown) Figure 5 (As shown). See also Figure 1 and Figure 2 When the locking device is in the locked state, both the sealing locking device 3 and the impact-resistant locking device 4 are in a locked state; see also Figure 3 When the locking device is in the unlocked state, both the sealing locking device 3 and the impact-resistant locking device 4 are unlocked. See [link / reference]. Figure 4 and Figure 5 In the explosion-proof locking state, the sealing locking device 3 is unlocked by the explosion-proof unlocker 2, and the impact-resistant locking device 4 is locked.

[0018] The anti-impact locking device 4, used to resist cabinet door impact, includes a transmission linkage assembly connected to the drive end 11 of the operating unit 1 and several latching mechanisms 41. The transmission linkage assembly is a connecting rod connected to the drive linkage, as shown in the attached figure. The transmission linkage assembly can be integrally connected to the drive linkage, or it can be a connecting rod structure connected to the drive linkage via a connector. The latching mechanism 41 has a locked state and an unlocked state. In the locked state, the cabinet door is allowed to open to a preset angle and is blocked at this angle. In the unlocked state, the obstruction of the cabinet door is completely released. The operating unit 1 controls all latching mechanisms 41 to synchronously switch between the locked and unlocked states via the transmission linkage assembly. As a simple and reliable solution, such as... Figure 1 , Figure 3 and Figure 5 As shown, the latching mechanism 41 includes a pin 411, which is inserted into the latch hole of the cabinet door to lock the door. Of course, the latching mechanism is not limited to a pin; it can also be a bolt structure from existing linkage locking systems, etc., to meet impact resistance requirements.

[0019] The sealing and locking device 3 is used to seal and lock the cabinet door. The sealing and locking device 3 includes a transmission assembly and several point-locking mechanisms 31 connected to the transmission assembly. Each point-locking mechanism 31 is synchronously unlocked by the transmission assembly. The transmission assembly has an unlocking end 321 and a venting trigger end 322. The unlocking end 321 can be driven by the operating unit 1 to achieve synchronous unlocking of each point-locking mechanism 31. The venting unlocker 2 drives the venting trigger end 322 to complete the synchronous unlocking of each point-locking mechanism 31. The process of unlocking via the venting unlocker 2 is independent of the operating unit 1. (See [reference]). Figure 4 The operation of the explosion venting unlocker 2 to unlock the point locking mechanism 31 via the explosion venting trigger end will not disturb the operating part 1 via the unlocking end. The operating part will still be in the locked state to ensure that the latching mechanism 41 is locked. The operation of the explosion venting unlocker to unlock the point locking mechanism via the explosion venting trigger end will not affect the operating part, that is, it will not affect the state of the impact-resistant locking device.

[0020] In this specific embodiment, the locking mechanism 31 is a collision locking mechanism that relies on external force to lock. The transmission component includes an active pull cable 323, an actuator 324 mounted on the locking mechanism 31 for driving the locking mechanism 31 to unlock, and a driven pull cable 325. One end of the active pull cable 323 is connected to the actuator 324 of one of the locking mechanisms 31, and the other end of the active pull cable 323 is connected to the unlocking end 321. The actuators 324 of each locking mechanism 31 are connected via the driven pull cable 325 to achieve linkage unlocking. The explosion venting trigger end 322 and the unlocking end 321 are independent of each other. The explosion venting trigger end 322 can be connected to the actuator 324 of one locking mechanism 31 via another active pull cable. Of course, the actuator 324 of the locking mechanism 31 can also serve as the explosion venting trigger end. The explosion venting unlocker directly drives the actuator 324 and achieves synchronous unlocking of multiple locking mechanisms 31 via the driven pull cable 325. The locking mechanism features a short unlocking stroke, enabling rapid triggering and unlocking during explosion venting. Control is achieved using an active and a passive cable. The cable is flexible; during explosion venting and unlocking, the active cable can bend without transmitting force to the operating unit. This allows for independent triggering during explosion venting without affecting the operating unit, and vice versa. The explosion venting unlocker 2 can be an electric actuator of the driving locking mechanism, adapted to the specific structure of the explosion venting trigger end. In this specific embodiment, if the explosion venting trigger end is one end of another explosion venting traction cable, the unlocker can be an electric traction device (winding up or a motor-driven slider that pulls the traction cable). Alternatively, if the explosion venting trigger end is an actuator, the unlocker can be a motor-driven push slider or an electromagnet-driven push slider, etc. The trigger signal of the explosion venting unlocker 2 can be set by a controller based on the relevant parameters required for explosion venting of the energy storage cabinet, such as a temperature sensor. To facilitate the closing and locking of the energy storage device cabinet door, the unlocking end 321 of the sealing and locking device 3 can be released and reset by the operating part 1 after the locking mechanism is unlocked. This allows the locking mechanism 31 to be in a collision-lockable state while the latching mechanism 41 remains unlocked. When the cabinet door is closed, there is no need to operate the operating part 1; the locking mechanism 31 engages and locks the cabinet door when the door is closed. Then, the operating part is operated to lock the latching mechanism, offering the advantage of convenient operation. In another embodiment, the unlocking end 321 also serves as the explosion venting trigger end 322.

[0021] Furthermore, the unlocking end 321 includes a traction member 3211 movably fitted onto the operating part 1. The traction member 3211 defines an initial position held by an elastic restoring force and an unlocked position reached by the drive. The unlocking stroke of the operating part 1 driving the latching mechanism 41 can be defined as a sequentially occurring front, middle, and rear segment. The driving end 11 on the operating part 1 is connected to the unlocking member 111, which is configured to: engage with the traction member 3211 during the middle segment of the stroke, allowing the traction member 3211 to move to the unlocked position against the elastic restoring force; and disengage from the traction member 3211 during the rear segment of the stroke, allowing the traction member 3211 to return to the initial position under the action of the elastic restoring force. In this way, while the latching mechanism remains unlocked, the point-locking mechanism is in a collision-lockable state. This design ensures that the latching mechanism has sufficient stroke to meet impact resistance requirements; and the unlocking stroke of the point-locking mechanism via the operating part is integrated into the unlocking stroke of the latching mechanism, offering the advantage of a compact operating path for the operating part.

[0022] The traction component 3211 is a traction slider that slides onto the operating part 1. The traction slider is located in the space between the two drive links of the linkage lock. The movement direction of the traction slider is set along the direction of the drive links, achieving a compact design. The traction slider has a defined sliding stroke, the two extremes of which constitute the initial position and the unlocked position, respectively. The active cable 323 is connected to the traction slider. A mounting boss is provided on the traction slider, and a hook connector is provided on the active cable. The hook connector is hooked into the hook groove of the mounting boss. A slider drive part 32111 is provided on the traction slider, and the drive part 32111 corresponds to and cooperates with the unlocking component 111. It has the advantages of simple and compact structure and reliable operation. Of course, the traction component can also be a winding wheel design. The winding wheel and the unlocking component adopt a clutch-type structure to achieve power clutch.

[0023] In one embodiment, the slider drive unit 32111 is a protrusion on the traction slider, such as... Figure 8As shown, the unlocking component 111 includes a drive seat 1111 driven by the drive end 11 and movable along the sliding direction of the traction slider, a lever 1112 slidably disposed on the drive seat 1111, and an elastic element 1113 that forces the lever 1112 to remain in a protruding state. The elastic element 1113 can be a helical compression spring. When the drive seat 1111 moves to the middle of its stroke, the protruding lever 1112 forms a pushing engagement with the protrusion to drive the traction slider to move. When the traction slider is at its sliding stroke limit position, the lever 1112 can be pushed back by the protrusion to overcome the elastic force, so that the unlocking component 111 passes over the protrusion. When the traction slider moves to its limit position, the traction slider is restricted, and the force applied by the lever 1112 to the protrusion will push the lever 1112 back in the opposite direction, thereby disengaging the component. After the traction slider is reset, in order to facilitate the locking operation of the operating unit, when the operating unit corresponding to the toggle block is locked, the side of the unlocking component in the sliding direction is designed with a slope to reduce the force required to drive the toggle block to retract.

[0024] like Figures 1-7 As shown, in one embodiment, the locking mechanism includes a locking point bracket 311, a rotating locking fork 312 with a U-shaped locking port, a locking fork spring 313, a stop hook 314 for locking the rotating locking fork 312, and a stop hook spring 315. The locking point bracket 311 is provided with a positioning wheel 3111 for positioning the driven cable 325. The rotating locking fork 312 is pivotally mounted on the locking point bracket 311 and can rotate. The rotating locking fork 312 has an unlocked position (e.g., ...). Figure 7 (as shown) and latch position (as shown) Figure 6 As shown, the rotating locking fork 312 rotates from the unlocked position to the latched position under the action of an external force acting on the U-shaped lock mouth, and the locking fork spring 313 stores energy. Both the locking fork spring 313 and the stop hook spring 315 can be torsion spring designs. The rotating locking fork 312 rotates to the unlocked position under the drive of the energy stored in the locking fork spring 313. The stop hook 314 is rotatably mounted on the locking point bracket 311 via a pivot. The stop hook 314 has a normal position. The stop hook spring 314 drives the stop hook 314 to return to the normal position. Under the driving force of the stop hook spring 314, the stop hook 314 engages with the rotating locking fork 312 that has entered the latched position and maintains the rotating locking fork 312 in the latched position. The actuator 324 is connected to the stop hook 314. The actuator 324 is a cross pin fixed on the stop hook 314. The actuator 324 drives the stop hook 314 to disengage from the normal position to unlock the rotating locking fork 312. The aforementioned latching structure has the advantage of simple structure. It uses a top-pressure rotating locking fork to achieve compression locking, which has the advantage of reliable locking. Of course, those skilled in the art can also choose other structural forms of latching mechanisms. The stop hook spring provides the stop hook to return to its original position and provides elastic restoring force for traction unlocking end to return to its original position. Of course, the unlocking end can also be specially designed with a spring to provide elastic restoring force.

[0025] The explosion-venting double-locking system of the present invention has the following advantages: it achieves both sealed locking of the cabinet door and explosion venting through small-angle opening. Furthermore, since the locked state of the impact-resistant latching mechanism of the cabinet door does not achieve a sealed lock, but rather a snap-lock design, the locking operation of the cabinet door is more effortless and convenient. Simply pushing the cabinet door closes it via the snap-lock, and then operating the linkage lock places the latching mechanism in the locked state. During this process, a gap exists between the cabinet door and the latching mechanism, making locking the latching mechanism even less effort.

Claims

1. A dual-locking explosion relief system, comprising an operating unit and a locking device, wherein the locking device is defined with a locked state and an unlocked state, characterized in that: The locking device includes a sealing locking device for sealing and locking the cabinet door. The sealing locking device includes a transmission component and several point locking mechanisms connected to the transmission component. The transmission component drives each point locking mechanism to unlock synchronously. The transmission component has an unlocking end and a venting trigger end. The unlocking end can be driven by the operating unit to realize the synchronous unlocking of each point locking mechanism. It also includes an impact-resistant locking device to resist cabinet door impacts, comprising a transmission linkage assembly connected to the drive end of the operating unit and several latching mechanisms. The latching mechanisms have locked and unlocked states. In the locked state, the cabinet door is allowed to open to a preset angle and is then blocked at that angle. In the unlocked state, the obstruction of the cabinet door is completely released. The operating unit, via the transmission linkage assembly, controls all latching mechanisms to synchronously switch between the locked and unlocked states. It also includes a deflation unlocker, which drives the deflation trigger to complete the synchronous unlocking of the locking mechanisms at each point. The unlocking process driven by the deflation unlocker is independent of the operation unit. When the locking device is in the locked state, both the sealing locking device and the impact-resistant locking device are locked; when the locking device is in the unlocked state, both the sealing locking device and the impact-resistant locking device are unlocked. The locking device also has a defined explosion-proof locking state, in which the sealing locking device is unlocked by the explosion-proof unlocking device, and the impact-resistant locking device is locked.

2. The explosion venting double interlocking system according to claim 1, characterized in that: The locking mechanism is a collision locking mechanism that relies on external force to lock. The transmission component includes an active cable, an actuator mounted on the locking mechanism for driving the locking mechanism to unlock, and a driven cable. One end of the active cable is connected to the actuator of one of the locking mechanisms, and the other end of the active cable is connected to the unlocking end. The actuators of each locking mechanism are connected via the driven cable to achieve linkage unlocking. The explosion venting trigger end and the unlocking end are independent of each other, or the unlocking end can simultaneously serve as the explosion venting trigger end.

3. The explosion-proof double-locking system according to claim 2, characterized in that: The unlocking end of the sealing and locking device can be released and reset by the operating part after the locking mechanism is unlocked, so that while the latching mechanism remains unlocked, the locking mechanism is in a collision-lockable state.

4. The explosion-proof double-locking system according to claim 3, characterized in that: The unlocking end includes a traction member that is movably fitted on the operating part. The traction member defines an initial position held by an elastic restoring force and an unlocking position that is driven to be reached. The unlocking stroke of the operating unit driving the latch mechanism can be defined as a front section, a middle section, and a rear section that proceed sequentially. The driving end of the operating unit is connected to an unlocking member, which is configured to: engage with the traction member during the middle stroke, allowing the traction member to move to the unlocked position against the elastic restoring force; and disengage from the traction member during the rear stroke, allowing the traction member to complete its reset to the initial position under the action of the elastic restoring force.

5. The explosion-proof double-locking system according to claim 4, characterized in that: The traction component is a traction slider that slides on the operating part. The traction slider has a sliding stroke, and the two extremes of the stroke constitute the initial position and the unlocking position, respectively. The active cable is connected to the traction slider, and a slider drive part is provided on the traction slider. The drive part is correspondingly engaged with the unlocking component.

6. The explosion-proof double-locking system according to claim 5, characterized in that: The slider driving part is a protrusion on the traction slider. The unlocking component includes a driving seat driven by the driving end and movable along the sliding direction of the traction slider, a paddle slidably disposed on the driving seat, and an elastic element that forces the paddle to remain in a protruding state. When the driving seat moves to the middle stroke, the protruding paddle and the protrusion form a pushing engagement to drive the traction slider to move. When the traction slider is at the limit position of the sliding stroke, the paddle can be pushed by the protrusion to overcome the elastic force and retract, so that the unlocking component passes over the protrusion.

7. The explosion venting double interlocking system according to claim 2, characterized in that: The locking mechanism includes a locking point bracket, a rotating locking fork with a U-shaped locking port, a locking fork spring, a stop hook for locking the rotating locking fork, and a stop hook spring. The rotating locking fork is pivotally mounted on the locking point bracket and can rotate. The rotating locking fork has an unlocked position and a latched position. Under the action of an external force acting on the U-shaped locking port, the rotating locking fork rotates from the unlocked position to the latched position, and the locking fork spring stores energy. Driven by the stored energy of the locking fork spring, the rotating locking fork rotates to the unlocked position. The stop hook is pivotally mounted on the locking point bracket and has a normal position. The stop hook spring drives the stop hook to return to the normal position. Under the driving force of the stop hook spring, the stop hook engages with the rotating locking fork in the latched position and maintains the rotating locking fork in the latched position. The actuator is connected to the stop hook and drives the stop hook to disengage from the normal position to unlock the rotating locking fork.

8. The explosion venting double interlocking system according to claim 1, characterized in that: The operating part is a linkage lock, and the driving end is the driving linkage of the linkage lock.

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