CN113719205A - Emergency unlocking device, vehicle door emergency unlocking control system and control method - Google Patents

Abstract

The invention relates to the technical field of vehicle equipment, in particular to an unlocking device, a vehicle door emergency unlocking control system and a control method; the emergency unlocking device comprises a locking mechanism and a control mechanism connected with the locking mechanism; the control mechanism controls the switch for buckling the lock catch of the locking mechanism and the lock tongue through the electric connection of the limit switch, the driving device and the electronic door controller; in addition, the embodiment of the invention adopts a buckling structure of a lock catch and a lock tongue structure, and a driving device controls the lock catch to move up and down through a connecting rod, so that the buckling and the unlocking of the lock catch and the lock tongue are realized, and the structure is simple and stable; the phenomena of clamping stagnation and the like can not occur in the motion control process.

Description

Emergency unlocking device, vehicle door emergency unlocking control system and control method

Technical Field

The invention relates to the technical field of vehicle equipment, in particular to an emergency unlocking device, a vehicle door emergency unlocking control system and a vehicle door emergency unlocking control method.

Background

The emergency unlocking device is also called a train emergency door opening device, and has the function that under emergency conditions (such as fire and vehicle door control failure), passengers can open the vehicle doors quickly without any key, so that the passengers can escape from the vehicle emergently, and the riding safety of the passengers is ensured to the maximum extent.

In the prior art, the emergency unlocking devices of train doors such as subways, light rails and the like are pure mechanical unlocking devices, comprise two gears of unlocking and resetting, are generally arranged above the right side of the train door, can be operated by self when passengers in the train judge that danger exists, directly rotate a handle of the emergency unlocking device to an unlocking position, forcibly open the train door, and in the unlocking process, a train driver or a worker cannot intervene in the operation of passengers, so that the control of the train door is completely lost; in a real scene, the condition that passengers make judgment errors or operate an unlocking handle subjectively and maliciously often exists, and because a train driver or a worker cannot intervene and block the unlocking handle, the train driver or the worker can only leave the unlocking handle to continue operation, unnecessary delay of normal operation of a train is caused, normal travel of all passengers on the whole line is blocked, and even a trampling event is probably caused, so that safety accidents are caused.

Disclosure of Invention

In view of the technical defects and technical drawbacks in the prior art, embodiments of the present invention provide an emergency unlocking device, a vehicle door emergency unlocking control system, and a vehicle door emergency unlocking control method that overcome or at least partially solve the above problems.

As one aspect of the embodiment of the invention, an emergency unlocking device is provided, which comprises a handle and a turntable, wherein the handle and the turntable are arranged in a carriage and are in linkage connection through a lock cylinder; the emergency unlocking device comprises a locking mechanism and a control mechanism connected with the locking mechanism;

the control mechanism comprises a limit switch, a driving device and an electronic door controller, the limit switch sends an electric signal to the electronic door controller according to the rotation of the handle, and the limit switch is electrically connected with the electronic door controller through a communication cable; the driving device controls the locking mechanism to be opened or closed according to an electric signal sent by the electronic door controller, and is electrically connected with the electronic door controller through a communication cable;

the locking mechanism comprises a lock tongue and a lock catch, the lock tongue is in linkage connection with the rotary disc, the lock catch is connected with the driving device, and the driving device drives the lock catch to move to control the lock catch to be connected with the lock tongue in a buckled mode.

Further, the lock catch comprises a connecting part, a hinge part and a buckling part; the connecting part and the buckling part are respectively arranged at two sides of the hinge part; the connecting part is connected with the driving device, the hinged part is hinged with the fixed support, and the buckling part is buckled with the lock tongue.

Furthermore, the lock tongue comprises a rotating part and a clamping part, and the rotating part is in linkage connection with the rotary disc through the lock cylinder; the clamping part is a lug extending outwards along the outer circumference of the rotating part; the clamping portion and the rotating portion are of an integrally formed structure.

Furthermore, the lock tongue or the turntable is provided with a flange, and the flange triggers the contact of the limit switch after rotating.

Further, the driving device is an electromagnetic device, a connecting rod is arranged at the output end of the electromagnetic device, the connecting rod moves up and down along the vertical direction, and the connecting rod is hinged to the connecting portion of the lock catch.

Further, the emergency unlocking device is also provided with a stop part, and the stop part is clamped with a groove arranged at the edge of the lock tongue.

Furthermore, the emergency unlocking device also comprises a panel bracket arranged on the carriage, the panel bracket is fixedly connected with an operation panel, the operation panel is arranged between the handle and the turntable, a reset gear, a request gear and an unlocking gear are arranged on the operation panel, and when the handle is arranged at the reset gear, the lock catch is buckled with the lock tongue; when the handle rotates to a required gear, the flange of the lock tongue triggers a contact of the limit switch, and the limit switch sends a signal for requesting unlocking to the electronic door controller; and the electronic door controller outputs an electric signal for controlling whether the driving device is unlocked or not according to the external indication signal.

Further, the panel support comprises a first fixing surface and a second fixing surface, the first fixing surface is fixedly connected with the carriage body, the second fixing surface is perpendicular to the first fixing surface, the panel support and the fixing support are respectively detachably connected with the first fixing surface, and the driving device is detachably connected with the second fixing surface.

As a further aspect of the embodiments of the present invention, there is provided a vehicle door emergency unlocking control system, including:

a locking device for opening or closing the door;

and any of the above described emergency unlocking devices;

and a steel wire rope is fixedly connected to a turntable in the emergency unlocking device, and the locking device is connected with the emergency unlocking device through the steel wire rope.

As still another aspect of the embodiment of the present invention, there is provided a vehicle door emergency unlocking control method including:

the handle and the rotary table are in linkage connection with a lock tongue in the locking mechanism through a lock cylinder; the rotating gears of the handle comprise a reset gear, a request gear and an unlocking gear;

when the handle rotates to a request gear, the limit switch is triggered, and the limit switch transmits an unlocking request signal to the electronic door controller through the communication cable; the electronic door controller transmits the unlocking request signal to a worker, acquires an external indication signal and outputs the external indication signal as a driving signal of a driving device;

when the external indication signal is an unlocking agreement instruction, the driving device drives the lock catch in the locking mechanism to move, the lock catch is separated from the lock tongue and unlocked, the handle rotates to an unlocking gear, the turntable is linked with the steel wire rope, and the steel wire rope drives the locking device to open the vehicle door;

when the external indication signal is an unlocking forbidding command, the driving device keeps the lock catch in the locking mechanism to be buckled with the lock tongue.

The embodiment of the invention at least realizes the following technical effects:

in addition, the embodiment of the invention adopts a lock catch and lock tongue structure, and the driving device controls the lock catch to move, thereby realizing the lock joint and the open of the lock catch and the lock tongue, and the lock joint mode is simple and reliable, and the clamping stagnation can not occur in the control movement process.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a prior art unlocking system;

FIG. 2 is a schematic view of a prior art unlocking device;

FIG. 3 is an exploded view of the structure of FIG. 2;

FIG. 4 is a schematic plan view of the structure of FIG. 2;

fig. 5 is a schematic structural diagram of an emergency unlocking device according to an embodiment of the present invention;

FIG. 6 is an exploded view of the structure of FIG. 5;

fig. 7 is a schematic structural diagram of a locking mechanism and a driving mechanism in the emergency unlocking device according to the embodiment of the invention;

FIG. 8 is a schematic diagram of a backside structure of the structure of FIG. 7;

FIG. 9 is a schematic diagram of the motion state of the structure of FIG. 7;

fig. 10 is a schematic structural view of a lock tongue and a limit switch in the emergency unlocking device according to the embodiment of the invention;

fig. 11 is a schematic structural diagram of a control panel in the emergency unlocking device according to the embodiment of the present invention;

fig. 12 is a schematic structural view of a rotary handle in the emergency unlocking device according to the embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a vehicle door emergency unlocking control system according to an embodiment of the invention;

fig. 14 is a structural schematic diagram of a motion state of an emergency unlocking device in the vehicle door emergency unlocking control system according to the embodiment of the invention;

FIG. 15 is a schematic diagram of a control method for emergency unlocking of a vehicle door according to an embodiment of the invention.

Description of the drawings: 1. a locking device; 2. an unlocking device; 21. a handle; 22. a lock cylinder; 23. a panel; 24. a turntable; 25. a support; 3. a wire rope; 4. a gate controller; 5. a motor; 6. a vehicle door; 61. a single door leaf; 7. an emergency unlocking device; 71. a limit switch; 72. a drive device; 721 a connecting rod; 73. an electronic gate controller; 74. a communication cable; 75. a latch bolt; 76. locking; 77 fixing the bracket; 78. a flange; 79. a stopper; 8. a panel bracket; 9. an operation panel; 10. a turntable support.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The figures and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and use the invention. Some conventional aspects have been simplified or omitted for the purpose of teaching the present invention. Those skilled in the art will appreciate that variations or substitutions from these embodiments will fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.

The unlocking device and the unlocking system of the structure of the system of the train door which are common in the prior art are arranged on the train door 6 of the train and consist of a locking device 1, an unlocking device 2 and a steel wire rope 3, referring to the attached drawings 1-4, one end of the steel wire rope 3 is wound on a turntable 24, and the turntable 24 is fixed on a bracket 25; the other end is connected with a locking device 1; the normal process of opening and closing the vehicle door 6 is carried out by controlling the movement of the motor 5 through the door controller 4 to open and close the vehicle door 6; the emergency unlocking process comprises the following steps: when the handle 21 is manually rotated, the handle 21 is directly rotated to an unlocking gear from an initial gear, the handle 21 is rotated to drive the rotary table 24 to rotate through the lock cylinder 22, so that the steel wire rope 3 fixedly connected with the rotary table 24 is driven to be tightened, the locking device 1 is started to open the left single door leaf 61 and the right single door leaf 61 which are matched with each other, and the purpose of emergency braking is realized, however, in the structure, no electric part is provided, and only mechanical unlocking in one step can be realized, namely, only two gears of unlocking and resetting are included on the panel 23; and the passenger or other personnel can directly rotate the handle 21 to the unlocking position, and during the unlocking process, the personnel (such as a train driver) cannot intervene in the operation of the passenger and lose the control of the vehicle door 6.

The invention provides an emergency unlocking device, an emergency vehicle door unlocking system and an emergency vehicle door unlocking control method for solving the problems, which realize that the required gear is increased through an electric component, the unlocking can be realized by a confirmation party of a worker in the unlocking process, and the locking mechanism is simple and has high stability.

Example 1

The embodiment provides an emergency unlocking device 7, which is shown in fig. 1-12 and comprises a handle 21 arranged in a carriage and a rotary table 24, wherein the handle 21 and the rotary table 24 are in linkage connection through a lock cylinder 22; the emergency unlocking device 7 comprises a locking mechanism and a control mechanism connected with the locking mechanism;

the control mechanism comprises a limit switch 71, a driving device 72 and an electronic door controller 73, the limit switch 71 sends an electric signal to the electronic door controller 73 according to the rotation of the handle 21, and the limit switch 71 is electrically connected with the electronic door controller 73 through a communication cable 74; the driving device 72 controls the on-off of the locking mechanism according to an electric signal sent by an electronic door controller 73, and the driving device 72 is electrically connected with the electronic door controller 73 through a communication cable 74;

the locking mechanism comprises a bolt 75 and a lock catch 76, the bolt 75 is in linkage connection with the rotary disc, the lock catch 76 is connected with the driving device 72, and the driving device 72 drives the lock catch 76 to move to control the lock catch 76 and the bolt 75 to be buckled.

In the embodiment, the lock cylinder is driven by the rotation of the handle, the lock cylinder is linked with the lock tongue and the turntable, when the handle rotates to a preset angle, the limit switch is triggered to send an electric signal to the electronic door controller through the communication cable, the electronic door controller can prompt designated workers, such as train drivers, whether the designated workers agree with an unlocking instruction or not and obtain the instruction of the designated workers, if the electronic door controller obtains the agreement with the unlocking instruction, the electronic door controller sends a moving electric signal to the driving device, the driving device drives the lock catch 76 to move, the lock catch 76 is separated from the lock tongue, the handle continues to rotate, and after the handle rotates to an unlocking position, the turntable drives the steel wire to move, so that emergency door opening is realized; if the electronic door controller acquires the unlocking rejection instruction, the electronic door controller does not send an electric signal to the driving device or sends a locking holding signal, the driving device is kept different, the lock catch 76 and the lock tongue are kept in a lock joint state, the handle cannot rotate continuously, and the emergency unlocking operation is blocked.

The rotation angle can be determined according to the fixed positions of the turntable and the steel wire rope, if the handle is set to rotate 90 degrees, the rotation amplitude of the turntable can drive the steel wire rope to open the vehicle door, and the preset angle can be 20 degrees, 25 degrees or 30 degrees. In addition, the control logic of the electronic door controller can be designed according to needs, and different design modes do not influence the operation of the emergency unlocking, such as: the method can be set to issue an instruction of agreeing to unlock when the driver does not respond within 5 seconds; alternatively, the driver may input the command through a trigger interface or a user interface, or may input the command through voice, etc.

Preferably, the latch 76 includes a connecting portion, a hinged portion, and a latching portion; the connecting part and the buckling part are respectively arranged at two sides of the hinge part; the connecting portion is connected to the driving device 72, the hinge portion is hinged to the fixing bracket 77, and the fastening portion is fastened to the latch 75. In this embodiment, the lock catch 76 includes three portions, wherein the hinge portion is disposed between the connecting portion and the fastening portion, the connecting portion and the fastening portion move up and down with the hinge portion as a pivot, the lock catch 76 is generally disposed in an integrally formed structure, the connecting portion, the hinge portion and the fastening portion are integrally in a "one" shape, and a blocking portion for blocking the lock tongue 75 from continuing to rotate is disposed at a tail portion of the fastening portion. The structure and the motion mode are simple, the cost is saved, and the stability is strong.

Preferably, the lock tongue 75 comprises a rotating part and a clamping part, and the rotating part is in linkage connection with the rotary disc 24 through a lock cylinder; the clamping part is a lug extending outwards along the outer circumference of the rotating part; the clamping portion and the rotating portion are of an integrally formed structure. In this embodiment, the latch tongue 75 is simple in structure, convenient to manufacture, low in cost, and because its joint portion is the lug form, is mechanical cooperation with the hasp 76, and separation and lock joint mode are simple, and the robustness is good, is difficult to the circumstances such as output jamming, and the lug wherein also can be multiple shape, can be as the shape shown in the attached drawing, also can be other shapes that can realize the lock joint with the hasp 76.

Preferably, the latch tongue 75 or the rotary disk 24 is provided with a flange 78, and the flange 78 is rotated to trigger the contact of the limit switch 71. In this embodiment, one side of the rotary plate 24 can be attached to the latch 75, and the other side is provided with a flange 78; a flange 78 may also be provided on the back of the latch 75, such that when the latch 75 or the dial 24 is rotated to a predetermined angle, such as 20 degrees, the flange 78 triggers the contacts of the limit switch, which generates an electrical signal to the electronic door controller 73.

Preferably, the driving device 72 is an electromagnetic device, an output end of the electromagnetic device is provided with a connecting rod 721, the connecting rod 721 moves up and down along the vertical direction, and the connecting rod 721 is hinged to the connecting portion of the lock catch 76. Wherein the electromagnetic device may be an electromagnet powered by the communication cable 74; the up-and-down movement of the connecting rod is controlled by electrifying and powering off; the connecting rod drives the lock catch 76 to hook and release by moving up and down; for example, the link rod can move upwards, the lock catch 76 hooks the lock tongue 75, the rotation of the handle is limited, and the unlocking operation is stopped; the link moves downward, the latch 76 releases the latch 75, and the handle can continue to rotate to the unlocked position, enabling manual emergency opening of the vehicle door. Of course, the design in the opposite direction is also possible.

Preferably, the emergency unlocking device 7 is further provided with a stopper 79, and the stopper 79 is engaged with a groove provided at an edge of the latch 75. In this embodiment, the stop member 79 may be disposed on the turntable support 10, and the top of the stop member 79 is provided with a spring plate which can be matched with a groove at the edge of the latch 75, so as to prevent the rotating latch 75 from rotating around under the condition of stopping external force, thereby ensuring the stability of the device.

Preferably, the emergency unlocking device 7 further includes a panel bracket 8 disposed in the carriage, the panel bracket 8 is fixedly connected to an operation panel 9, the operation panel 9 is disposed between the handle and the rotary table 24, the operation panel 9 is provided with a reset gear, a request gear and an unlocking gear, and when the handle is disposed in the reset gear, the lock catch 76 is fastened to the lock tongue 75; when the handle is rotated to a requested gear, the flange 78 of the bolt 75 triggers the contact of the limit switch 71, and the limit switch 71 sends a request unlocking signal to the electronic door controller 73; the electronic gate controller 73 outputs an electric signal for controlling whether the driving device 72 is unlocked or not according to an external instruction signal. In practical application, 3 gears of "reset", "request" and "unlock" can be marked on the operation panel 9, when the handle and the lock cylinder rotate by about 25 degrees to 30 degrees, the handle rotates from "reset" to "request" gear, the limit switch 71 is triggered to send an unlocking request electric signal to the electronic door controller 73, after a worker obtains the request, an indication signal is sent, if the worker agrees to unlocking, the lock catch 76 and the lock tongue 75 are opened, the handle drives the lock cylinder, the lock tongue 75 and the turntable 24 to continue rotating to "unlock" gear, so as to realize unlocking, wherein the "unlock" gear can be a position of the "reset" gear which rotates by about 90 degrees.

Preferably, the panel bracket 8 includes a first fixing surface and a second fixing surface, the first fixing surface is fixedly connected with the carriage body, the second fixing surface is perpendicular to the first fixing surface, the panel bracket 8 and the fixing bracket 77 are respectively detachably connected with the first fixing surface, and the driving device 72 is detachably connected with the second fixing surface. In this embodiment, the components are uniformly arranged by the panel bracket 8, the driving device 72 is arranged above the second fixing surface, the connecting rod 721 of the driving device can extend to the lower part of the second fixing surface, the operation panel 9 and the handle are arranged in front of the first fixing surface, the lock cylinder penetrates from the front to the back of the first fixing surface to be linked with the lock tongue 75 and the turntable 24, the lock tongue 75 and the turntable 24 can also be fixed with the first fixing surface by the turntable bracket 10, and the fixing bracket 77 is arranged behind the first fixing surface and is detachably connected with the first fixing surface; through the layout of each component in the implementation, the optimization of the structure and the space is realized, the number of the components is reduced, the space of the emergency unlocking device is saved, and the tightness and the fluency of the connection of each component are ensured.

In the embodiment, the central lines of the handle 21, the lock cylinder 22, the rotary disc 24 and the bolt 75 are arranged on a straight line to form a linkage mechanism; the handle and the lock cylinder drive the bolt 75 and the rotary disc to rotate to the required gear, but the bolt is clamped by the lock catch 76 and cannot rotate continuously; meanwhile, the flange 78 rotates to press and trigger the limit switch 71, and the electric signal is transmitted to the electronic door controller 73 through the communication cable 74; the electronic gate controller 73 determines whether to energize the driving device 72 through the communication cable 74 based on the unlock instruction; the driving device 72 is electrified to move, the lock catch 76 moves and is separated from the lock tongue 75, and unlocking is realized; the driving device 72 is not electrified, the lock catch 76 is not moved, the lock catch is buckled with the lock tongue 75, and the handle cannot rotate continuously, so that unlocking is prevented; this example simple structure, compactness have realized increasing staff's electrical control, when promoting train security performance, have practiced thrift improved cost, have reduced the processing and the installation degree of difficulty of part, provide a practicality emergency unlocking device simple, robust and with low costs.

Example 2

Based on the same conception, the embodiment of the invention also provides a vehicle door emergency unlocking control system, and as the principle of the problem solved by the vehicle door emergency unlocking control system is similar to that of the vehicle door emergency unlocking control device of the embodiment, the implementation of the implementation can refer to the implementation of the vehicle door emergency unlocking control device of the embodiment, and repeated details are not repeated.

The embodiment provides a vehicle door emergency unlocking control system, which is shown in figures 5-14; the system comprises:

a lock device 1 for opening or closing a vehicle door;

and the emergency unlocking device 7 described above;

a steel wire rope 3 is fixedly connected to a rotary disc 24 in the emergency unlocking device 7, and the locking device 1 is connected with the emergency unlocking device 7 through the steel wire rope 3.

In this embodiment, fig. 13 is a schematic diagram of an emergency unlocking control system of the entire vehicle door, in which one end of a wire rope is wound around a turntable; the other end is connected with a locking device; one end of a communication cable 74 is connected to the driving device 72, and the other end is connected to the electronic gate controller 73; one end of another communication cable 74 is connected to the limit switch 71; the other end is connected with an electronic gate controller 73. When the handle rotates to a requested gear, the limit switch 71 sends an electric signal to the electronic door controller 73, and when the electronic door controller 73 receives an unlocking instruction agreed by a worker, the electronic door air sends an electric signal to the driving device 72, the lock catch 76 moves, the lock tongue 75 is released, the turntable rotates, the steel wire rope is tightened, the locking device is driven to move, the left single door leaf 61 and the right single door leaf 61 in the door are forced to be separated, and the emergency door opening operation is realized.

Example 3

The embodiment provides a vehicle door emergency unlocking control method, and refer to fig. 5-14 and 15; the method comprises the following steps:

the handle 21 and the rotary disc 24 are linked and connected with a bolt in the locking mechanism through the lock cylinder 22; the rotation gears of the handle 21 include a reset gear, a request gear and an unlocking gear;

when the handle is rotated to the required gear, the limit switch 71 is triggered, and the limit switch 71 transmits an unlocking request signal to the electronic door controller 73 through the communication cable 74; the electronic gate controller 73 transmits the unlocking request signal to a worker, acquires an external indication signal, and outputs the external indication signal as a driving signal of the driving device 72;

when the external indication signal is an instruction for agreeing to unlock, the driving device 72 drives the lock catch 76 in the locking mechanism to move, the lock catch 76 is separated from the lock tongue 75, the lock is released, the handle rotates to an unlocking gear, the turntable 24 is linked with the steel wire rope 3, and the steel wire rope 3 drives the locking device 1 to open the vehicle door;

when the external indication signal is an unlock prohibition command, the driving device 72 keeps the lock catch 76 of the lock mechanism engaged with the lock tongue 75.

In the embodiment, under normal conditions, the door of the train is kept closed in the running process of the train, and the method of the embodiment is triggered when the handle in the carriage rotates under the action of external force. Wherein: specifically, if the electronic door controller 73 does not allow the lock tongue 75 to continue to rotate to the unlocking position, the electronic door controller 73 transmits an unlocking prohibition signal to the driving device 72 through the communication cable 74, the driving device 72 controls the link 721 to remain stationary and not to act, and the link 721 controls the lock catch 76 not to act, so as to continuously hook the lock tongue 75; if the electronic doorcontroller 73 allows the latch 75 to continue to rotate to the unlocking position, the electronic doorcontroller 73 transmits an "unlocking allowed" signal to the driving device 72 through the communication cable 74; the driving device 72 controls the link 721 to press down, the link 721 presses down the latch 76, and the latch 76 releases the latch 75; the handle and the lock cylinder are continuously rotated to an unlocking gear, the handle and the lock cylinder drive the bolt 75 and the rotary disc 24 to continuously rotate to an unlocking gear, the rotary disc 24 pulls the steel wire rope 3, and the steel wire rope 3 pulls the locking device 1 to finish unlocking action.

The embodiment of the invention adds the electromagnetic unlocking device, the limit switch 71, the communication cable 74 and other electrical components, realizes the 'request' function of emergency unlocking, can solve the problem that a worker remotely intervenes the unlocking operation of passengers through simple improvement of the unlocking device in the prior art, realizes that the passengers or other personnel cannot directly rotate the handle to directly unlock, and improves the safety performance of the train.

The use of ordinal numbers such as "first," "second," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or the order of one element in another, but are used merely to distinguish one element having a certain name from another element having a same name.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the invention should not be construed to reflect the intent: that the invention as claimed requires more features than are expressly recited in each claim. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An emergency unlocking device comprises a handle and a rotary table which are arranged in a carriage, wherein the handle and the rotary table are in linkage connection through a lock cylinder; the emergency unlocking device is characterized by comprising a locking mechanism and a control mechanism connected with the locking mechanism;

the control mechanism comprises a limit switch, a driving device and an electronic door controller, the limit switch sends an electric signal to the electronic door controller according to the rotation of the handle, and the limit switch is electrically connected with the electronic door controller through a communication cable; the driving device controls the locking mechanism to be opened or closed according to an electric signal sent by the electronic door controller, and is electrically connected with the electronic door controller through a communication cable;

the locking mechanism comprises a lock tongue and a lock catch, the lock tongue is in linkage connection with the rotary disc, the lock catch is connected with the driving device, and the driving device drives the lock catch to move to control the lock catch to be connected with the lock tongue in a buckled mode.

2. The emergency unlocking device of claim 1, wherein the latch includes a connecting portion, a hinge portion, and a latch portion; the connecting part and the buckling part are respectively arranged at two sides of the hinge part; the connecting part is connected with the driving device, the hinged part is hinged with the fixed support, and the buckling part is buckled with the lock tongue.

3. The emergency unlocking device of claim 1, wherein the latch bolt comprises a rotating portion and a clamping portion, and the rotating portion is in linkage connection with the rotary plate through a lock cylinder; the clamping part is a lug extending outwards along the outer circumference of the rotating part; the clamping portion and the rotating portion are of an integrally formed structure.

4. The emergency release device of claim 1, wherein the latch or dial is provided with a flange that rotates to activate the limit switch contacts.

5. The emergency unlocking device according to claim 2, wherein the driving means is an electromagnetic device, and an output end of the electromagnetic device is provided with a link rod which moves up and down in a vertical direction, and the link rod is hinged to the connecting portion of the lock catch.

6. The emergency release device of claim 1, further comprising a stop that engages a groove disposed on an edge of the latch.

7. The emergency unlocking device of claim 1, further comprising a panel bracket disposed on the carriage, wherein the panel bracket is fixedly connected to the operation panel, the operation panel is disposed between the handle and the turntable, the operation panel is provided with a reset gear, a request gear and an unlocking gear, and when the handle is disposed in the reset gear, the latch is fastened to the latch; when the handle rotates to a required gear, the flange of the lock tongue triggers a contact of the limit switch, and the limit switch sends a signal for requesting unlocking to the electronic door controller; and the electronic door controller outputs an electric signal for controlling whether the driving device is unlocked or not according to the external indication signal.

8. The emergency unlocking device of claim 7, wherein the panel bracket includes a first fixing surface and a second fixing surface, the first fixing surface is fixedly connected to the body of the compartment, the second fixing surface is perpendicular to the first fixing surface, the panel bracket and the fixing bracket are detachably connected to the first fixing surface, respectively, and the driving device is detachably connected to the second fixing surface.

9. A vehicle door emergency unlock control system, characterized in that the system comprises:

a locking device for opening or closing the door;

the emergency unlocking device of any of claims 1 to 8;

and a steel wire rope is fixedly connected to a turntable in the emergency unlocking device, and the locking device is connected with the emergency unlocking device through the steel wire rope.

10. A vehicle door emergency unlocking control method, characterized by comprising:

the handle and the rotary table are in linkage connection with a lock tongue in the locking mechanism through a lock cylinder; the rotating gears of the handle comprise a reset gear, a request gear and an unlocking gear;

when the handle rotates to a request gear, the limit switch is triggered, and the limit switch transmits an unlocking request signal to the electronic door controller through the communication cable; the electronic door controller transmits the unlocking request signal to a worker, acquires an external indication signal and outputs the external indication signal as a driving signal of a driving device;

when the external indication signal is an unlocking agreement instruction, the driving device drives the lock catch in the locking mechanism to move, the lock catch is separated from the lock tongue and unlocked, the handle rotates to an unlocking gear, the turntable is linked with the steel wire rope, and the steel wire rope drives the locking device to open the vehicle door;

when the external indication signal is an unlocking forbidding command, the driving device keeps the lock catch in the locking mechanism to be buckled with the lock tongue.

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