CN216110167U

CN216110167U - Shielding door lock

Info

Publication number: CN216110167U
Application number: CN202121393988.4U
Authority: CN
Inventors: 钟进; 许单樑; 陆晨隆
Original assignee: Hangzhou Xizi Rail Transit Equipment Co ltd
Current assignee: Hangzhou Xizi Rail Transit Equipment Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-03-22
Anticipated expiration: 2031-06-22

Abstract

The utility model relates to the technical field of rail transit, in particular to a shielding door lock. A shielded door lock comprises a bottom plate, a driving assembly and a locking assembly, wherein the driving assembly and the locking assembly are arranged on the bottom plate; the locking assembly comprises a first locking unit and a second locking unit which are connected with each other, the first locking unit corresponds to the first door, and the second locking unit corresponds to the second door; the bottom plate is provided with a first limiting part and a second limiting part, and the first limiting part and the second limiting part can be respectively abutted against the first locking unit and the second locking unit; when the double-shielding door is in the second state, the first locking unit and the second locking unit are separated from the first limiting part and the second limiting part respectively, so that the locking assembly moves towards the direction close to the first limiting part and the second limiting part and locks the first door and the second door respectively. The utility model has the advantages that: the first door and the second door are locked at the same time, so that the safety of passengers is enhanced, and the passengers are prevented from falling off because any one door is not closed.

Description

Shielding door lock

Technical Field

The utility model relates to the technical field of rail transit, in particular to a shielding door lock.

Background

The shielded door lock is used for locking or unlocking a double shielded door of rail transit.

The existing shielding door lock respectively adopts belt pulley transmission to realize the opening or closing of the double shielding doors, so that the condition that one door is locked and the other door is unlocked exists, and the risk of falling of passengers is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a shielding door lock, which adopts the following technical scheme:

a shielding door lock is used for locking or unlocking a double shielding door of rail transit, the double shielding door comprises a first door and a second door, the shielding door lock comprises a bottom plate, a driving assembly and a locking assembly, the driving assembly and the locking assembly are both arranged on the bottom plate, and the driving assembly is connected to the locking assembly and can drive the locking assembly to move; the locking assembly comprises a first locking unit and a second locking unit which are connected with each other, the first locking unit corresponds to the first door, and the second locking unit corresponds to the second door; the bottom plate is provided with a first limiting part and a second limiting part, and the first limiting part and the second limiting part can respectively support the first locking unit and the second locking unit; when the double-shielding door is in a second state, the first locking unit and the second locking unit are respectively separated from the first limiting part and the second limiting part, so that the locking assembly moves towards the direction close to the first limiting part and the second limiting part and respectively locks the first door and the second door.

With the arrangement, only when the first locking unit and the second locking unit are separated from the first limiting part and the second limiting part, the locking assembly moves downwards to lock the first door and the second door, so that the first door and the second door are simultaneously locked, the safety of passengers is enhanced, and the passengers are prevented from falling off because any door is not locked.

In one embodiment, the first locking unit includes a first locking hook and a first supporting block, the first supporting block is connected to the first locking hook, the first position-limiting portion can abut against the first supporting block or release the abutment, and the first locking hook can move toward a direction close to the first position-limiting portion and hook the first door; the second locking unit comprises a second locking hook and a second supporting block, the second supporting block is connected to the second locking hook, the second limiting part can abut against the second supporting block or release the abutment, and the second locking hook can move towards the direction close to the second limiting part and hook the second door.

In one embodiment, the first support block and the second support block are respectively provided with a thrust boss, and the thrust bosses of the first support block and the thrust boss of the second support block are arranged in a back-to-back manner and respectively protrude towards two sides of the base plate; the first supporting block and the second supporting block are respectively provided with a limiting groove at one end, and the first limiting part and the second limiting part can respectively abut against the inner wall of the limiting groove of the first supporting block and the inner wall of the limiting groove of the second supporting block.

By the arrangement, when the first limiting part and the second limiting part are abutted against the first supporting block and the second supporting block, the unlocking cannot be performed due to slipping.

In one embodiment, the bottom plate is provided with a first guide groove and a second guide groove, the first locking unit includes a first connecting shaft, the second locking unit includes a second connecting shaft, the first connecting shaft is inserted into the first guide groove and connects the first locking unit to the bottom plate, the second connecting shaft is inserted into the second guide groove and connects the second locking unit to the bottom plate, and the first connecting shaft and the second connecting shaft move along the first guide groove and the second guide groove, respectively.

So set up, first guide way and second guide way play guiding movement's effect.

In one embodiment, the driving assembly includes a manual unlocking unit, the manual unlocking unit is disposed on the bottom plate, and pushing the manual unlocking unit can unlock the first door and the second door from the first locking unit and the second locking unit, respectively.

With this arrangement, manual unlocking can be performed when a power failure occurs or when the electromagnet fails.

In one embodiment, the manual unlocking unit comprises an unlocking plate, the unlocking plate is arranged on the side face, far away from the locking assembly, of the bottom plate, the unlocking plate is pushed, and the unlocking plate can be abutted against the first connecting shaft and the second connecting shaft and pushes the first connecting shaft and the second connecting shaft to move.

In one embodiment, the manual unlocking unit further comprises an inductive switch, and the inductive switch is arranged on the side surface of the bottom plate far away from the locking assembly and can sense the state of the unlocking plate.

So set up, can respond to whether the unlocking board has already carried out the unblock to locking Assembly to send the signal to control mechanism, in order to avoid arousing the maloperation.

In one embodiment, the driving assembly comprises a travel switch, the locking assembly further comprises a rebound bracket connected to one side of the first locking unit and one side of the second locking unit, and the travel switch can cooperate with the rebound bracket to sense the state of the locking assembly.

So set up, give control mechanism with signal transmission, thereby control mechanism sends corresponding instruction according to the signal that receives.

In one embodiment, the travel switch includes a first sensor wheel disposed proximate to the resilient support and capable of making and breaking contact with the resilient support.

In one embodiment, the driving assembly further comprises an electromagnet and a connecting portion, a telescopic shaft is arranged at one end of the electromagnet, one end of the connecting portion is connected to the locking assembly, the other end of the connecting portion is connected to the telescopic shaft, and the telescopic shaft can stretch and retract to drive the locking assembly to move towards a direction away from or close to the electromagnet.

Compared with the prior art, according to the shielding door lock provided by the utility model, the first locking unit and the second locking unit are connected, when the double-shielding door lock is in the second state, and the first locking unit and the second locking unit are both separated from the first limiting part and the second limiting part, the first locking unit and the second locking unit can integrally move towards the direction close to the first door and the second door so as to simultaneously lock the first door and the second door, so that a passenger can be prevented from falling off because any one of the first door and the second door is not closed, and the safety is enhanced.

Drawings

FIG. 1 is a front view of a shielded door lock according to the present invention with the housing removed and the double shielded door locked;

FIG. 2 is a front view of the shield door lock with the housing removed and with the dual shield door unlocked;

FIG. 3 is a perspective view of a shield door lock;

FIG. 4 is a right side view of the shield door lock;

fig. 5 is a schematic structural diagram of the first support block or the second support block.

The symbols in the drawings represent the following meanings:

100. a shielded door lock; 10. a base plate; 11. mounting holes; 12. a first limiting part; 13. a second limiting part; 14. a first guide groove; 15. a second guide groove; 20. a locking assembly; 21. a first locking unit; 211. a first latch hook; 2111. a third support pin; 212. a first support block; 2121. a thrust boss; 2122. a limiting groove; 2123. a first elastic member; 2124. a first support pin; 213. a first connecting shaft; 22. a second locking unit; 221. a second latch hook; 2211. a fourth support pin; 222. a second support block; 2221. a second elastic member; 2222. a second support pin; 223. a second connecting shaft; 23. a rebound bracket; 30. a drive assembly; 31. an electromagnet; 311. a telescopic shaft; 32. a connecting portion; 33. a travel switch; 331. a first sensor wheel; 34. a manual unlocking unit; 341. an unlocking plate; 342. an inductive switch; 343. mounting a plate; 344. a second sensed wheel; 40. a housing; 41. a wire passing hole; 200. a double shield door; 201. a first door; 202. a second door; 203. a latch hook portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the double-shielded door lock 100 according to the present invention is used for locking or unlocking a double-shielded door 200 for rail traffic such as subway, motor train, and high-speed rail, and is preferably applicable to a platform door, that is, the double-shielded door 200 includes a first door 201 and a second door 202.

Specifically, the shielded door lock 100 includes a bottom plate 10, a locking assembly 20 and a driving assembly 30, wherein the driving assembly 30 and the locking assembly 20 are both disposed on the bottom plate 10, and the driving assembly 30 is connected to the locking assembly 20 and is used for driving the locking assembly 20 to lock or unlock the dual shielded door 200.

A plurality of elongated mounting holes 11 are formed in both sides of the base plate 10, and the base plate 10 is fixedly mounted through the mounting holes 11, and the mounting positions of the elongated mounting holes 11 can be adjusted. In the present embodiment, the mounting hole 11 is waist-shaped, and in other embodiments, the mounting hole 11 may also be square.

Referring to fig. 1 and 2, the locking assembly 20 includes a first locking unit 21 and a second locking unit 22, the first locking unit 21 is connected to the second locking unit 22, the first locking unit 21 and the second locking unit 22 are respectively connected to the driving assembly 30, the first locking unit 21 corresponds to the first door 201, the second locking unit 22 corresponds to the second door 202, the driving assembly 30 can drive the first locking unit 21 and the second locking unit 22 to reciprocate simultaneously, so that the first locking unit 21 locks or unlocks the first door 201, and the second locking unit 22 locks or unlocks the second door 202. It should be noted that the first locking unit 21 and the second locking unit 22 respectively lock the locking arms of the first door 201 and the second door 202.

Further, the base plate 10 is provided with a first stopper portion 12 and a second stopper portion 13, the first stopper portion 12 can support the first locking unit 21, and the second stopper portion 13 can support the second locking unit 22. When the double-shielded door 200 is in the first state, that is, when the first door 201 and the second door 202 are opened, the first limiting part 12 supports the first locking unit 21, the second limiting part 13 supports the second locking unit 22, the first locking unit 21 does not lock the first door 201, and the second locking unit 22 does not lock the second door 202; when the double-shielded door 200 is in the second state, that is, when the first door 201 and the second door 202 are closed, the first locking unit 21 is disengaged from the first position-limiting portion 12, the second locking unit 22 is disengaged from the second position-limiting portion 13, the locking assembly 20 integrally falls and moves toward a direction close to the first position-limiting portion 12 and the second position-limiting portion 13, that is, integrally moves downward, so that the first locking unit 21 locks the first door 201, and the second locking unit 22 locks the second door 202.

When the first locking unit 21 and the second locking unit 22 of the present invention are both separated from the first position-limiting part 12 and the second position-limiting part 13, the first locking unit 21 and the second locking unit 22 can simultaneously fall and lock the first door 201 and the second door 202, so as to ensure the safety of passengers and prevent the passengers from falling down because one of the doors is locked and the other door is unlocked.

In this embodiment, the first position-limiting portion 12 and the second position-limiting portion 13 are both pins fixed on the bottom plate 10, and in other embodiments, protrusions may be further disposed on the bottom plate 10 as the first position-limiting portion 12 and the second position-limiting portion 13.

The first locking unit 21 includes a first locking hook 211 and a first supporting block 212, the first supporting block 212 is connected to the first locking hook 211, the first position-limiting portion 12 can abut against the first supporting block 212 or release the abutment, and the first locking hook 211 can move toward a direction close to the first position-limiting portion 12 and hook the first door 201; the second locking unit 22 includes a second locking hook 221 and a second supporting block 222, the second supporting block 222 is connected to the second locking hook 221, the second position-limiting portion 13 can abut against the second supporting block 222 or release the abutment, and the second locking hook 221 can move toward a direction close to the second position-limiting portion 13 and hook the second door 202.

Specifically, the lock arms of the first door 201 and the second door 202 are each provided with a lock hook portion 203, the lock hook portion 203 is provided on the side of the first door 201 and the second door 202 facing the base plate 10, and the first lock hook 211 and the second lock hook 221 are each in a shape of a "√". When the double shield door 200 is in the second state, both the first latch hook 211 and the second latch hook 221 can catch the latch hook portion 203, thereby locking the first door 201 and the second door 202.

In the present embodiment, the latch hook portion 203 is a pin, and in other embodiments, the latch hook portion 203 may also be a protruding structure provided on the first door 201 and the second door 202.

Referring to fig. 5, the first support block 212 and the second support block 222 are respectively provided with a thrust boss 2121, the thrust boss 2121 of the first support block 212 and the thrust boss 2121 of the second support block 222 are arranged in a reverse manner, and the thrust boss 2121 of the first support block 212 and the thrust boss 2121 of the second support block 222 are respectively arranged to protrude toward two sides of the base plate 10, that is, the thrust boss 2121 of the first support block 212 is arranged to protrude toward the first door 201, and the thrust boss 2121 of the second support block 222 is arranged to protrude toward the second door 202. The first door 201 and the second door 202 can respectively impact the thrust boss 2121 of the first support block 212 and the thrust boss 2121 of the second support block 222, so that the first support block 212 is separated from the first position-limiting portion 12, and the second support block 222 is separated from the second position-limiting portion 13.

One end of each of the first support block 212 and the second support block 222 is provided with a limit groove 2122, and the first limit portion 12 and the second limit portion 13 can respectively abut against the inner wall of the limit groove 2122 of the first support block 212 and the inner wall of the limit groove 2122 of the second support block 222, so as to prevent the first support block 212 from slipping off the first limit portion 12 and the second support block 222 from slipping off the second limit portion 13.

A first elastic element 2123 is arranged between the first supporting block 212 and the first lock hook 211, one end of the first elastic element 2123 abuts against the first supporting block 212, the other end abuts against the first lock hook 211, and the first elastic element 2123 is used for resetting the first supporting block 212; a second elastic member 2221 is disposed between the second supporting block 222 and the second locking hook 221, one end of the second elastic member 2221 abuts against the second supporting block 222, the other end abuts against the second locking hook 221, and the second elastic member 2221 is used for resetting the second supporting block 222. When the dual shield door 200 is in the second state, the first elastic member 2123 and the second elastic member 2221 are in the stretched state, and when the first door 201 and the second door 202 move away from the first support block 212 and the second support block 222, respectively, the first support block 212 can be reset by the restoring force of the first elastic member 2123, and the second support block 222 can be reset by the restoring force of the second elastic member 2221.

In this embodiment, the first elastic member 2123 and the second elastic member 2221 are torsion springs, the first support block 212 and the second support block 222 are respectively provided with a first support pin 2124 and a second support pin 2222, the first lock hook 211 is provided with a third support pin 2111, one end of the first elastic member 2123 abuts against the first support pin 2124, and the other end abuts against the third support pin 2111; the second latch hook 221 is provided with a fourth support pin 2211, one end of the second elastic member 2221 abuts against the second support pin 2222, and the other end abuts against the fourth support pin 2211.

The bottom plate 10 is provided with a first guide groove 14 and a second guide groove 15, the first locking unit 21 further comprises a first connecting shaft 213, the second locking unit 22 further comprises a second connecting shaft 223, the first connecting shaft 213 penetrates through the first guide groove 14 and connects the first locking hook 211 to the bottom plate 10, and the second connecting shaft 223 penetrates through the second guide groove 15 and connects the second locking hook 221 to the bottom plate 10. The driving assembly 30 can be connected or abutted to the first connecting shaft 213 and the second connecting shaft 223, and drives the first connecting shaft 213 and the second connecting shaft 223 to move, so that the first locking unit 21 and the second locking unit 22 move along the first guide groove 14 and the second guide groove 15, respectively.

In this embodiment, the first guide groove 14 and the second guide groove 15 are both rectangular, and in other embodiments, the second guide groove 15 and the second guide groove 15 may also be in the shape of a long bar having a waist shape.

In this embodiment, the first connecting shaft 213 and the second connecting shaft 223 are both pins, and in other embodiments, the first connecting shaft 213 and the second connecting shaft 223 may also be convex structures.

The locking assembly 20 further includes a resilient bracket 23, the resilient bracket 23 is connected to the first locking unit 21 and the second locking unit 22 at a side away from the first limiting portion 12 and the second limiting portion 13, and the driving assembly 30 can sense the state of the locking assembly 20 through the resilient bracket 23 and send a locking or unlocking signal to a control mechanism (not shown).

The driving assembly 30 includes an electromagnet 31 and a connecting portion 32, wherein an end of the electromagnet 31 is provided with a telescopic shaft 311, the connecting portion 32 is connected to the telescopic shaft 311, and an end of the connecting portion 32 away from the telescopic shaft 311 is connected to the locking assembly 20. When the double-shielded door 200 is in the second state, the electromagnet 31 is electrified, the telescopic shaft 311 extends, and the driving assembly 30 is in the locking state of the double-shielded door 200; when the dual-shielded door 200 is in the first state, the electromagnet 31 is de-energized, the telescopic shaft 311 is shortened, and the driving assembly 30 is driven to move in a direction away from the first limiting portion 12 and the second limiting portion 13, so as to pull up the driving assembly 30, and the first limiting portion 12 and the second limiting portion 13 respectively support the first supporting block 212 and the second supporting block 222.

Drive assembly 30 also includes a travel switch 33, which travel switch 33 is capable of sensing the condition of lock assembly 20 through the cooperation of resilient bracket 23.

Specifically, a first induction wheel 331 is arranged at one end of the travel switch 33, the first induction wheel 331 is located at one end of the travel switch 33 close to the rebound bracket 23, the first induction wheel 331 can be in contact with or out of contact with the rebound bracket 23, when the first induction wheel 331 is in contact with the rebound bracket 23, it indicates that the first locking unit 21 is supported on the first limiting part 12, the second locking unit 22 is supported on the second limiting part 13, and the travel switch 33 sends a signal that the double-shielded door 200 is in the first state; when the first sensing wheel 331 is disconnected from the resilient bracket 23, it indicates that the first locking unit 21 is separated from the first position-limiting portion 12, the second locking unit 22 is separated from the first position-limiting portion 12, the locking assembly 20 falls down as a whole, and the travel switch 33 sends a signal that the double-shielded door 200 is in the second state.

In the present embodiment, there are two travel switches 33 and two first inductive wheels 331, and the two travel switches 33 and the two first inductive wheels 331 are respectively provided on both sides of the electromagnet 31 symmetrically to each other. Of course, in other embodiments, the travel switches 33 may also be one or three and more.

Referring to fig. 4, the driving assembly 30 further includes a manual unlocking unit 34, the manual unlocking unit 34 is disposed on the bottom plate 10, the first locking unit 21 and the second locking unit 22 can be unlocked from the first door 201 and the second door 202 by manually pushing the manual unlocking unit 34, and the manual unlocking unit 34 can be unlocked manually.

Specifically, the manual unlocking unit 34 includes an unlocking plate 341, the unlocking plate 341 is slidably disposed on one side of the bottom plate 10 away from the locking assembly 20, the unlocking plate 341 is manually pushed to move, the unlocking plate 341 can abut against the first connecting shaft 213 and the second connecting shaft 223, and the first connecting shaft 213 and the second connecting shaft 223 are pushed to move along the first guide groove 14 and the second guide groove 15, respectively.

The manual unlocking unit 34 further includes an inductive switch 342, the inductive switch 342 is disposed on a side of the bottom plate 10 away from the locking assembly 20 and is close to the unlocking plate 341, and the inductive switch 342 can sense a state of the unlocking plate 341. When the unlocking plate 341 contacts the inductive switch 342, it indicates that the locking unit is in the manual unlocking state, and the inductive switch 342 transmits a signal to the control mechanism.

The sensing switch 342 is provided with a second sensing wheel 344 at an end thereof adjacent to the unlocking plate 341, and the second sensing wheel 344 can be in contact with or out of contact with the unlocking plate 341 to sense the position of the unlocking plate 341.

Preferably, a mounting plate 343 is disposed between the inductive switch 342 and the base plate 10, the mounting plate 343 is fixed to the base plate 10, and the inductive switch 342 is fixed to the mounting plate 343. Since the stroke switch 33 and the like are fixed to the base plate 10 by screws and are switched by the mounting plate 343, the interference between the inductive switch 342 and the screws on the base plate 10 can be avoided.

Referring to fig. 3, the shielded door lock 100 further includes a housing 40, and the housing 40 covers the electromagnet 31 and the travel switch 33 to protect the electromagnet 31 and the travel switch 33.

Specifically, a wire passing hole 41 is formed in one side of the housing 40, and the wire passing hole 41 is used for the penetration of a cable.

The housing 40 is provided adjacent to an opening in one side of the locking assembly 20 to allow the resilient support 23 to be raised into contact with the first sensed wheel 331.

In the working process, when the first door 201 and the second door 202 move in opposite directions, the first door 201 and the second door 202 respectively impact the thrust boss 2121 of the first supporting block 212 and the thrust boss 2121 of the second supporting block 222, the first supporting block 212 and the second supporting block 222 are separated from the first limiting portion 12 and the second limiting portion 13, at this time, the electromagnet 31 is powered on, the telescopic shaft 311 extends out, the first locking unit 21 and the second locking unit 22 integrally fall under the action of gravity and the telescopic shaft 311, the first locking hook 211 and the second locking hook 221 respectively hook the locking hook portion 203 of the locking arm of the first door 201 and the locking hook portion 203 of the locking arm of the second door 202, and the first door 201 and the second door 202 are locked. When the first door 201 and the second door 202 move away from each other, that is, move in a direction away from each other, the electromagnet 31 loses power, the telescopic shaft 311 retracts, the first locking unit 21 and the second locking unit 22 move in a direction close to the electromagnet 31 under the driving of the telescopic shaft 311, and the first support block 212 and the second support block 222 are reset under the action of the first elastic member 2123 and the second elastic member 2221 and the action of their own gravity, so that the first limiting portion 12 and the second limiting portion 13 abut against the limiting groove 2122, thereby unlocking the first door 201 and the second door 202. When the electromagnet 31 is deactivated, unlocking can be performed using the manual unlocking unit 34.

When the first locking unit 21 and the second locking unit 22 are both separated from the first limiting part 12 and the second limiting part 13, the first locking unit 21 and the second locking unit 22 lock the first door 201 and the second door 202 in a falling manner, so that the situation that the first door 201 is locked and the second door 202 is unlocked and the situation that the second door 202 is locked and the first door 201 is unlocked are avoided, and the safety of passengers is enhanced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A shielding door lock is used for locking or unlocking a double shielding door (200) of rail transit, the double shielding door (200) comprises a first door (201) and a second door (202), the shielding door lock comprises a bottom plate (10), a driving assembly (30) and a locking assembly (20), the driving assembly (30) and the locking assembly (20) are arranged on the bottom plate (10), and the driving assembly (30) is connected to the locking assembly (20) and can drive the locking assembly (20) to move;

characterized in that the locking assembly (20) comprises a first locking unit (21) and a second locking unit (22) which are connected with each other, the first locking unit (21) corresponds to the first door (201), and the second locking unit (22) corresponds to the second door (202); a first limiting part (12) and a second limiting part (13) are arranged on the bottom plate (10), and the first limiting part (12) and the second limiting part (13) can respectively support the first locking unit (21) and the second locking unit (22); when the double-shielding door (200) is in the second state, the first locking unit (21) and the second locking unit (22) are respectively separated from the first limiting part (12) and the second limiting part (13), so that the locking assembly (20) moves towards the direction close to the first limiting part (12) and the second limiting part (13) and respectively locks the first door (201) and the second door (202).

2. The shielded door lock according to claim 1, wherein the first locking unit (21) comprises a first locking hook (211) and a first supporting block (212), the first supporting block (212) is connected to the first locking hook (211), the first stopper (12) can abut against the first supporting block (212) or be released from abutment, and the first locking hook (211) can move towards a direction close to the first stopper (12) and hook the first door (201);

the second locking unit (22) comprises a second locking hook (221) and a second supporting block (222), the second supporting block (222) is connected to the second locking hook (221), the second limiting portion (13) can be abutted to the second supporting block (222) or be released from abutment, and the second locking hook (221) can move towards the direction close to the second limiting portion (13) and hook the second door (202).

3. The shielded door lock according to claim 2, wherein the first support block (212) and the second support block (222) are respectively provided with a thrust boss (2121), and the thrust bosses (2121) of the first support block (212) and the thrust bosses (2121) of the second support block (222) are oppositely arranged and respectively protrude towards two sides of the base plate (10); one end of each of the first support block (212) and the second support block (222) is provided with a limit groove (2122), and the first limit part (12) and the second limit part (13) can respectively abut against the inner wall of the limit groove (2122) of the first support block (212) and the inner wall of the limit groove (2122) of the second support block (222).

4. The shielding door lock according to claim 1, wherein a first guide groove (14) and a second guide groove (15) are formed in the bottom plate (10), the first locking unit (21) includes a first connecting shaft (213), the second locking unit (22) includes a second connecting shaft (223), the first connecting shaft (213) is inserted into the first guide groove (14) and connects the first locking unit (21) to the bottom plate (10), the second connecting shaft (223) is inserted into the second guide groove (15) and connects the second locking unit (22) to the bottom plate (10), and the first connecting shaft (213) and the second connecting shaft (223) move along the first guide groove (14) and the second guide groove (15), respectively.

5. The shielded door lock according to claim 4, characterized in that the drive assembly (30) comprises a manual unlocking unit (34), the manual unlocking unit (34) being provided on the base plate (10), pushing the manual unlocking unit (34) enabling the first locking unit (21) and the second locking unit (22) to unlock the first door (201) and the second door (202), respectively.

6. The shielding door lock according to claim 5, wherein the manual unlocking unit (34) comprises an unlocking plate (341), the unlocking plate (341) is disposed on a side surface of the bottom plate (10) far away from the locking assembly (20), the unlocking plate (341) is pushed, and the unlocking plate (341) can abut against the first connecting shaft (213) and the second connecting shaft (223) and push the first connecting shaft (213) and the second connecting shaft (223) to move.

7. The shielded door lock according to claim 6, characterized in that the manual unlocking unit (34) further comprises an inductive switch (342), the inductive switch (342) being provided on the side of the base plate (10) remote from the locking assembly (20) and being capable of sensing the state of the unlocking plate (341).

8. The screening door lock according to claim 1, characterized in that the drive assembly (30) comprises a travel switch (33), the locking assembly (20) further comprising a rebound bracket (23), the rebound bracket (23) being connected to one side of the first locking unit (21) and the second locking unit (22), the travel switch (33) being able to cooperate with the rebound bracket (23) to sense the state the locking assembly (20) is in.

9. Shielding door lock according to claim 8, wherein the travel switch (33) comprises a first sensor wheel (331), said first sensor wheel (331) being arranged close to the resilient support (23) and being able to be brought into or out of contact with the resilient support (23).

10. The shielding door lock according to claim 8, characterized in that the driving assembly (30) further comprises an electromagnet (31) and a connecting portion (32), one end of the electromagnet (31) is provided with a telescopic shaft (311), one end of the connecting portion (32) is connected to the locking assembly (20), the other end is connected to the telescopic shaft (311), and the telescopic shaft (311) can be extended and retracted to drive the locking assembly (20) to move in a direction away from or close to the electromagnet (31).