CN219672387U - Electromagnetic lock device and subway shield door - Google Patents

Abstract

The utility model discloses an electromagnetic lock device and a subway shielding door, wherein the electromagnetic lock device comprises a bottom plate, a shifting fork and a locking hook plate, and the bottom plate is connected with a rotating shaft; the shifting fork is rotationally connected to the rotating shaft and can rotate around the rotating shaft under the pushing of the locking arm bolt; the lock hook plate is rotationally connected with the rotating shaft, and can move relative to the bottom plate by taking sliding fit between the lock hook plate and the rotating shaft as guide; one of the shifting fork and the locking hook plate is provided with a limiting column, the other one of the shifting fork and the locking hook plate is provided with a limiting groove, and the limiting column penetrates through the limiting groove and can be in butt fit with the groove wall of the limiting groove so as to control locking/unlocking between the locking hook plate and the shifting fork under the driving of the shifting fork and enable the locking hook plate to unlock/lock the locking arm bolt. When the electromagnetic lock device works, the lock hook plate and the shifting fork can be linked by utilizing the abutting fit between the limiting column and the wall of the limiting groove, so that the reliability of the electromagnetic lock device in working can be improved, and the use requirement of the subway shielding door can be met.

Description

Electromagnetic lock device and subway shield door

Technical Field

The utility model belongs to the technical field related to lock structures, and particularly relates to an electromagnetic lock device and a subway shielding door.

Background

Electromagnetic lock device is applied to the subway shield door, and is usually with shield door upper lock arm bolt cooperation to the shield door that will be in the closed state locks.

At present, the existing electromagnetic lock device generally comprises a bottom plate, a shifting fork and a locking hook plate, wherein the shifting fork is rotationally connected to the bottom plate, the locking hook plate is slidably connected to the bottom plate, and one side end of the shifting fork can be abutted to a limiting column on the locking hook plate so as to limit the locking hook plate. When the electromagnetic lock device works, the shifting fork is pushed by the locking arm bolt to rotate relative to the bottom plate, the shifting fork can release the limit of the locking hook plate, the locking hook plate can descend under the action of gravity, and the locking arm bolt is locked. However, because there is no guiding matching structure between the shifting fork and the locking hook plate, the reliability of the movement of the electromagnetic lock device when the electromagnetic lock device is matched with the locking arm bolt is not high.

Disclosure of Invention

In view of the foregoing, there is a need for an electromagnetic lock device and a subway shield door that solve the above-mentioned problems.

An electromagnetic lock device is applied to a subway shielding door and is used for being matched with a locking arm bolt so as to lock/unlock the locking arm bolt; the electromagnetic lock device includes:

the bottom plate is connected with a rotating shaft;

the shifting fork is rotationally connected with the rotating shaft and can rotate around the rotating shaft under the pushing of the locking arm bolt;

the lock hook plate is connected to the rotating shaft in a sliding way, and can move relative to the bottom plate by taking sliding fit between the lock hook plate and the rotating shaft as guide;

one of the shifting fork and the locking hook plate is provided with a limiting column, the other one of the shifting fork and the locking hook plate is provided with a limiting groove, and the limiting column penetrates through the limiting groove and can be in butt fit with the groove wall of the limiting groove so as to control locking/unlocking between the locking hook plate and the shifting fork under the driving of the shifting fork and enable the locking hook plate to unlock/lock the locking arm bolt.

According to the utility model, the limit post penetrates through the limit groove and is in abutting fit with the groove wall of the limit groove, so that the shifting fork can lock the locking hook plate by using the groove wall of the limit groove, and the shifting fork plays a role in guiding the movement between the shifting fork and the locking hook plate so as to ensure that the locking hook plate and the shifting fork are linked when the electromagnetic lock device works, thus the reliability of the electromagnetic lock device when the electromagnetic lock device works can be improved, and the use requirement of the subway shielding door can be met.

In one embodiment, the limit post is arranged on the lock hook plate, and the limit groove is arranged on the shifting fork;

the limiting groove is provided with a locking part, and the part of the groove wall, which is positioned on the locking part, can limit the limiting column to the shifting fork so as to lock the locking hook plate and the shifting fork.

It can be understood that the limiting post is arranged on the locking hook plate, and the limiting groove is arranged on the shifting fork, so that an embodiment of the electromagnetic lock device is realized, and the electromagnetic lock device has the advantages of simplifying the structure and facilitating the assembly of the locking hook plate and the shifting fork; meanwhile, the shifting fork is used for locking the locking hook plate by abutting between the part, located on the locking part, of the groove wall and the limiting column, so that the use requirement of the electromagnetic lock device can be met.

In one embodiment, the bottom plate is further connected with a blocking post, and the fork is formed with a thrust portion capable of abutting against the blocking post to limit the fork to the bottom plate and lock the fork with the lock hook plate.

It can be understood that the limit of the shifting fork on the bottom plate is realized by the abutment between the blocking post on the bottom plate and the anti-thrust part on the shifting fork, so as to meet the use requirement of the shifting fork on locking the locking hook plate.

In one embodiment, the fork further forms a weight part, and the weight part is disposed on one side of the fork away from the thrust part, and is used for driving the fork to reset after the fork is separated from the locking arm bolt.

It can be understood that the upper counterweight part of the shifting fork is used for driving the shifting fork to reset after being separated from the latch of the latch arm, and the linkage between the shifting fork and the latch plate is combined, so that the acting force required by the electromagnetic lock device for driving the latch plate during unlocking can be reduced, and the unlocking control during the operation of the electromagnetic lock device is facilitated.

In one embodiment, the shifting fork is further provided with a limiting part, and the limiting part can be clamped with the locking arm bolt under the driving of the shifting fork so as to lock the locking arm bolt to the shifting fork.

It can be understood that the limiting part for the shifting fork is clamped to the locking arm bolt in a locking state, so that the locking arm bolt can be simultaneously locked by the shifting fork and the locking hook plate when the electromagnetic lock device works, and the stability of the electromagnetic lock device in locking the locking arm bolt can be improved.

In one embodiment, the shifting fork is arranged at a position between the bottom plate and the locking hook plate;

the bottom plate is connected with a supporting limit column, the rotating shaft is connected with a supporting sleeve, and the supporting limit column and the supporting sleeve are all attached to the lock hook plate so that the lock hook plate and the bottom plate are arranged in parallel.

It can be understood that the locking hook plate parallel to the bottom plate is arranged on the outer side of the shifting fork, so that the shifting fork can be assembled on the bottom plate firstly and then the locking hook plate is assembled when the electromagnetic lock device is assembled, and the electromagnetic lock device can be assembled integrally; meanwhile, the locking hook plate can also play a role in protecting the shifting fork, and the electromagnetic lock device has the function of further improving the reliability of the electromagnetic lock device.

In one embodiment, the locking hook plate is provided with a hand push plate, the hand push plate is arranged on the periphery of the shifting fork, and the locking hook plate can move relative to the bottom plate under the pushing of the hand push plate so as to release the locking of the locking hook plate to the locking arm bolt.

It can be understood that through the structure setting of above-mentioned hand push pedal for this electromagnetic lock device can realize manual unblock, in order to satisfy the user demand of subway shield door.

In one embodiment, the supporting and limiting column is connected with a guide column, a guide groove is formed in the lock hook plate, and the guide column penetrates through the guide groove to guide the lock hook plate to move on the bottom plate.

It is understood that the cooperation between the guide post and the guide groove is utilized, so that the movement of the lock hook plate on the bottom plate can be guided and limited.

In one embodiment, the number of the shifting forks is two, and the two shifting forks are stacked in the thickness direction of the bottom plate.

It can be appreciated that the number of the shifting forks is two, so that one embodiment of the electromagnetic lock device is realized, and the electromagnetic lock device is particularly suitable for subway shielding doors with double doors

The utility model further discloses a subway shielding door, which comprises the electromagnetic lock device.

Compared with the prior art, the utility model has the following beneficial effects:

according to the electromagnetic lock device and the subway shielding door, the limiting columns penetrate through the limiting grooves and are in abutting fit with the groove walls of the limiting grooves, so that the shifting fork can lock the locking hook plates by the groove walls of the limiting grooves, and the shifting fork and the locking hook plates can move in a guiding mode to ensure that the locking hook plates and the shifting fork are linked when the electromagnetic lock device works, and therefore reliability of the electromagnetic lock device in working can be improved, and use requirements of the subway shielding door can be met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of an electromagnetic lock device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial structure of the present utility model;

FIG. 3 is a schematic view of a fork according to the present utility model;

FIG. 4 is a schematic diagram of the electromagnetic lock device of the present utility model when unlocking the locking arm latch;

FIG. 5 is a schematic view of the electromagnetic lock device of the present utility model in locking the locking arm latch;

fig. 6 is a schematic view of the structure of fig. 5 from another view angle.

Reference numeral 100, electromagnetic lock device; 10. a bottom plate; 11. a rotating shaft; 111. a support sleeve; 12. an electromagnet; 121. a cushion block; 13. a travel switch; 131. a travel push plate; 14. a baffle column; 15. supporting and limiting columns; 151. a guide post; 20. a shifting fork; 21. a limit groove; 210. a locking part; 211. a groove wall; 22. a thrust portion; 23. a weight part; 24. a limit part; 30. a lock hook plate; 31. a limit column; 32. a guide groove; 33. a hand pushing plate; 201. a locking arm latch; 202. a locking arm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements 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 utility model 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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 4, the electromagnetic lock device 100 claimed in the present utility model is applied to a subway shield door, and is used to cooperate with a locking arm latch 201 to lock/unlock the locking arm latch 201. It should be noted that, the locking arm latch 201 is vertically mounted on the locking arm 202 of the shielding door, so that the shielding door can drive the locking arm latch 201 to move by the locking arm 202.

As shown in fig. 1 to 3, an electromagnetic lock device 100 according to an embodiment of the present utility model includes a base plate 10, a fork 20, and a hook plate 30, wherein the base plate 10 is connected with a rotating shaft 11; the shifting fork 20 is rotatably connected to the rotating shaft 11, and the shifting fork 20 can rotate around the rotating shaft 11 under the pushing of the locking arm latch 201; the locking hook plate 30 is rotatably connected to the rotating shaft 11, and the locking hook plate 30 can move relative to the bottom plate 10 by taking sliding fit between the locking hook plate 30 and the rotating shaft 11 as guide; one of the shifting fork 20 and the locking hook plate 30 is configured with a limiting column 31, the other is configured with a limiting groove 21, and the limiting column 31 penetrates through the limiting groove 21 and can be in abutting fit with a groove wall 211 of the limiting groove 21, so that locking/unlocking between the locking hook plate 30 and the shifting fork 20 is controlled under the driving of the shifting fork 20, and the locking hook plate 30 unlocks/locks the locking arm latch 201. That is, the fork 20 can lock the hooking plate 30 by the groove wall 211 of the limiting groove 21.

It can be appreciated that the electromagnetic lock device 100 utilizes the abutting fit between the limiting post 31 and the groove wall 211 of the limiting groove 21, so that the relative movement between the shifting fork 20 and the locking hook plate 30 can be guided, and the locking hook plate 30 and the shifting fork 20 are linked, so that the reliability of the electromagnetic lock device 100 in operation can be improved, and the use requirement of the subway shielding door can be met.

As shown in fig. 1 and fig. 2, in an embodiment, the bottom plate 10 is further connected with an electromagnet 12 and a travel switch 13, and the electromagnet 12 is connected with the latch plate 30, so that the electromagnet 12 can drive the latch plate 30 to move relative to the bottom plate 10 after being electrified, so as to release the latch of the latch arm 201 by the latch plate 30; the travel switch 13 can cooperate with the hook plate 30 to generate a feedback signal, specifically, detect two states of the hook plate 30 moving relative to the base plate 10 and generate a feedback signal, that is, lock and unlock the locking arm latch 201 when the electromagnetic lock device 100 works can generate feedback signals respectively.

The base plate 10 is also connected with a cushion block 121 for carrying the electromagnet 12, that is, the electromagnet 12 is specifically mounted on the base plate 10 through the cushion block 121; and, the number of the travel switches 13 on the bottom plate 10 is two, specifically, the travel switches 13 can be set to be in a vertical structure, and the two travel switches 13 are arranged on two sides of the electromagnet 12 along the moving direction of the locking arm latch 201, accordingly, the locking hook plate 30 is partially bent and formed with two travel push plates 131, the two travel push plates 131 are in one-to-one correspondence with the two travel switches 13, so that when the electromagnetic lock device 100 works, the locking hook plate 30 can drive the two travel push plates 131 to be respectively matched with the two travel switches 13 and generate feedback signals while moving on the bottom plate 10. It should be noted that, the specific structure of the travel switch 13 and the working principle of the travel switch 13 for generating the feedback signal according to how to cooperate with the travel push plate 131 on the latch plate 30 can be adopted in the conventional manner of the subway shield door currently on the market, which is not described herein.

As shown in fig. 2, the number of the two shift forks 20 is two, and the two shift forks 20 are stacked along the thickness direction of the bottom plate 10, so that the electromagnetic lock device 100 is particularly suitable for a double door subway shield door. Of course, the number of the shift forks 20 may be one, so that the electromagnetic lock device 100 is suitable for a single door subway shield door.

As shown in fig. 1 and 2, in the electromagnetic lock device 100, the limit post 31 is disposed on the lock hook plate 30, and the limit groove 21 is disposed on the shift fork 20, so that an embodiment of the shift fork 20 and the lock hook plate 30 is realized, and the electromagnetic lock device has a simplified structure, is convenient for assembling the shift fork 20 and the lock hook plate 30, and of course, it is also possible for a person skilled in the art to dispose the limit post on the shift fork, and dispose the limit groove as the lock hook plate.

As shown in fig. 3, the limiting groove 21 has a locking portion 210, and a portion of the groove wall 211 located at the locking portion 210 can limit the position of the post 31 to the shift fork 20, so as to lock between the lock hook plate 30 and the shift fork 20, thereby specifically realizing the limitation of the shift fork 20 to the lock hook plate 30 when the electromagnetic lock device 100 is in an unlocking state. Note that, the locking portion 210 of the limiting groove 21 may be disposed on the fork 20 in a horizontal direction.

As shown in fig. 2, the base plate 10 is further connected with a blocking post 14, the fork 20 is formed with a thrust portion 22, and the thrust portion 22 can abut against the blocking post 14 to limit the fork 20 to the base plate 10 and lock the fork 20 with the latch plate 30. That is, the fork 20 is locked to the bottom plate 10 by abutment between the stopper 14 and the thrust portion 22, while the fork 20 and the lock hook plate 30 are locked.

As shown in fig. 2 and 3, the fork 20 is further formed with a weight portion 23, and the weight portion 23 is disposed on one side of the fork 20 away from the thrust portion 22, and is used for driving the fork 20 to reset after being separated from the locking arm latch 201, and combining with linkage between the fork 20 and the hook plate 30, so that the acting force required by driving the hook plate 30 when the electromagnetic lock device 100 is unlocked can be reduced, so as to facilitate unlocking control when the electromagnetic lock device 100 is operated.

It should be noted that, in the electromagnetic lock device 100, a torsion spring (not shown) is further connected between the shifting fork 20 and the rotating shaft 11, so that the shifting fork 20 can rotate around the rotating shaft 11 under the pushing of the locking arm latch 201 and can be driven to deform, and thus, the elastic deformation of the torsion spring is utilized, so that the locking hook plate 30 can move under the driving of the electromagnet 12 and simultaneously, the torsion spring and the counterweight 23 can jointly drive the shifting fork 20 to reversely rotate around the rotating shaft 11 until the thrust portion 22 on the shifting fork 20 abuts against the stop post 14 on the bottom plate 10.

As shown in fig. 2 and 3, the shifting fork 20 is further formed with a limiting portion 24, and the limiting portion 24 can be clamped with the locking arm latch 201 under the driving of the shifting fork 20, so that the locking arm latch 201 is locked to the shifting fork 20, and the locking arm latch 201 can be simultaneously locked by the shifting fork 20 and the locking hook plate 30 when the electromagnetic lock device 100 works, so that the stability of the electromagnetic lock device 100 in locking the locking arm latch 201 can be improved.

As shown in fig. 1 and 2, the fork 20 is disposed between the bottom plate 10 and the hook plate 30; wherein, the bottom plate 10 is connected with a supporting and limiting column 15, the rotating shaft 11 is connected with a supporting sleeve 111, and the supporting and limiting column 15 and the supporting sleeve 111 are all attached to the locking and hooking plate 30, so that the locking and hooking plate 30 and the bottom plate 10 are arranged in parallel, and the use requirement of the locking and hooking plate 30 for moving relative to the bottom plate 10 is met. It should be noted that, the supporting and limiting post 15 may be specifically disposed on the moving path of the shifting fork 20, so that when the shifting fork 20 is pushed by the locking arm latch 201 to rotate around the rotating shaft 11, the shifting fork 20 may be specifically limited by the abutment between the supporting and limiting post 15 and the shifting fork 20, and of course, the supporting and limiting post 15 and the supporting sleeve 111 may be made of wear-resistant materials, so as to meet the use requirement of the locking hook plate 30 for moving relative to the supporting and limiting post 15 and the supporting sleeve 111.

It can be appreciated that the hook plate 30 parallel to the bottom plate 10 is disposed at the outer side of the fork 20, so that the fork 20 can be assembled to the bottom plate 10 before the hook plate 30 is assembled when the electromagnetic lock device 100 is assembled, thus facilitating the overall assembly of the electromagnetic lock device 100; meanwhile, the locking hook plate 30 also has a protective effect on the shifting fork 20, and has an effect of further improving the reliability of the electromagnetic lock device 100.

As shown in fig. 1, the supporting and limiting column 15 is connected with a guiding column 151, and the locking plate 30 is provided with a guiding groove 32, and the guiding column 151 penetrates through the guiding groove 32 to guide the locking plate 30 to move on the bottom plate 10. That is, the electromagnetic lock device 100 utilizes the sliding fit between the supporting and limiting post 15 and the rotating shaft 11 on the base plate 10 and the locking hook plate 30 to specifically guide the movement of the locking hook plate 30 on the base plate 10, so that the locking hook plate 30 can only move relative to the base plate 10 along the gravity direction, and locking/unlocking of the locking arm latch 201 is realized.

As shown in fig. 1, the locking hook plate 30 is formed with a hand pushing plate 33, the hand pushing plate 33 is disposed at the periphery of the shifting fork 20, and the locking hook plate 30 can move relative to the bottom plate 10 under the pushing of the hand pushing plate 33 so as to release the locking of the locking hook plate 30 to the locking arm latch 201, so that the electromagnetic lock device 100 can realize manual unlocking to meet the use requirement of the subway shielding door.

As shown in fig. 4 to 6, in the electromagnetic lock device 100 of the present utility model, in the unlocking state, the lock hook plate 30 is driven by the electromagnet 12 to unlock the lock arm latch 201, the lock hook plate 30 is specifically limited by abutting and matching between the limiting post 31 and the part of the slot wall 211 of the limiting slot 21 on the shifting fork 20, which is located at the locking portion 210, and the shifting fork 20 is abutted to the blocking post 14 of the bottom plate 10 by the thrust portion 22, at the same time, the travel switch 13 is matched with the lock hook plate 30 and sends a feedback signal representing the unlocking state; when the shielding door is closed and drives the locking arm latch 201 to move towards the shifting fork 20 and push the shifting fork 20, the shifting fork 20 can rotate around the rotating shaft 11 under the pushing of the locking arm latch 201, the shifting fork 20 can drive the groove wall 211 of the limiting groove 21 to release the limit of the limiting column 31 while rotating, then the locking hook plate 30 can move on the bottom plate 10 under the action of gravity and realize locking of the locking arm latch 201, and meanwhile, the locking hook plate 30 is released from being matched with the travel switch 13, so that the travel switch 13 can send a feedback signal representing a locking state; then, when the shielding door needs to be opened, the electromagnet 12 obtains a signal to drive the latch plate 30 to move in the direction, and at the same time, the shifting fork 20 is driven by the weight part 23 and the torsion spring, and can be reset to the initial state under the guide of the abutting fit between the groove wall 211 of the limiting groove 21 and the limiting post 31.

In addition, the utility model also claims a subway shield door, which comprises the electromagnetic lock device 100.

The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that suitable modifications and variations of the above embodiments are within the scope of the utility model as claimed.

Claims (10)

1. An electromagnetic lock device is applied to a subway shielding door and is used for being matched with a locking arm bolt (201) to lock/unlock the locking arm bolt (201); the electromagnetic lock device (100) is characterized by comprising:

a bottom plate (10) connected with a rotating shaft (11);

a shifting fork (20) which is rotationally connected with the rotating shaft (11), and the shifting fork (20) can rotate around the rotating shaft (11) under the pushing of the locking arm bolt (201);

the lock hook plate (30) is connected to the rotating shaft (11) in a sliding manner, and the lock hook plate (30) can move relative to the bottom plate (10) by taking sliding fit between the lock hook plate (30) and the rotating shaft (11) as guide;

wherein, shift fork (20) with one of them is constructed with spacing post (31) of lock collude board (30), and the other is constructed with spacing groove (21), spacing post (31) run through spacing groove (21) set up and can with cell wall (211) butt cooperation of spacing groove (21), in order to control under the drive of shift fork (20) lock/unblock between lock collude board (30) and shift fork (20), and make lock collude board (30) to lock arm bolt (201) unblock/lock.

2. The electromagnetic lock device according to claim 1, characterized in that the limit post (31) is provided to the lock hook plate (30), and the limit groove (21) is provided to the fork (20);

the limiting groove (21) is provided with a locking part (210), and a part of the groove wall (211) located at the locking part (210) can limit the limiting column (31) to the shifting fork (20) so as to lock the locking hook plate (30) and the shifting fork (20).

3. Electromagnetic lock device according to claim 2, characterized in that the base plate (10) is further connected with a blocking post (14), the fork (20) is formed with a thrust portion (22), the thrust portion (22) being able to abut against the blocking post (14) to limit the fork (20) to the base plate (10) and to lock between the fork (20) and the hooking plate (30).

4. An electromagnetic lock device according to claim 3, wherein the fork (20) is further formed with a weight (23), the weight (23) being arranged on the side of the fork (20) facing away from the thrust portion (22) for driving the fork (20) to reset after being separated from the locking arm latch (201).

5. The electromagnetic lock device according to claim 1, wherein a limiting portion (24) is further formed on the shifting fork (20), and the limiting portion (24) can be clamped with the locking arm latch (201) under the driving of the shifting fork (20) so as to lock the locking arm latch (201) to the shifting fork (20).

6. The electromagnetic lock device according to claim 1, characterized in that the fork (20) is disposed between the base plate (10) and the hook plate (30);

the bottom plate (10) is connected with a supporting limit column (15), the rotating shaft (11) is connected with a supporting sleeve (111), and the supporting limit column (15) and the supporting sleeve (111) are all attached to the lock hook plate (30) so that the lock hook plate (30) and the bottom plate (10) are arranged in parallel.

7. The electromagnetic lock device according to claim 6, wherein the lock hook plate (30) is formed with a push plate (33), the push plate (33) is disposed at the periphery of the fork (20), and the lock hook plate (30) can move relative to the base plate (10) under the push of the push plate (33) to release the lock of the lock hook plate (30) to the lock arm latch (201).

8. The electromagnetic lock device according to claim 6, wherein the supporting and limiting column (15) is connected with a guide column (151), the locking hook plate (30) is provided with a guide groove (32), and the guide column (151) penetrates through the guide groove (32) to guide the locking hook plate (30) to move on the bottom plate (10).

9. Electromagnetic lock device according to claim 1, characterized in that the number of the shift forks (20) is two, and that the two shift forks (20) are arranged in a stack along the thickness direction of the base plate (10).

10. A subway shield door, characterized in that it comprises an electromagnetic lock device (100) according to any one of claims 1-9.