CN110952845A - Built-in door system for railway vehicle - Google Patents

Built-in door system for railway vehicle Download PDF

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Publication number
CN110952845A
CN110952845A CN201911406053.2A CN201911406053A CN110952845A CN 110952845 A CN110952845 A CN 110952845A CN 201911406053 A CN201911406053 A CN 201911406053A CN 110952845 A CN110952845 A CN 110952845A
Authority
CN
China
Prior art keywords
shifting fork
lock
door leaf
fixing shaft
door
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911406053.2A
Other languages
Chinese (zh)
Inventor
王坚群
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Bide Science And Technology Co ltd
Original Assignee
Jiangsu Bide Science And Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Bide Science And Technology Co ltd filed Critical Jiangsu Bide Science And Technology Co ltd
Priority to CN201911406053.2A priority Critical patent/CN110952845A/en
Publication of CN110952845A publication Critical patent/CN110952845A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/36—Locks for passenger or like doors
    • E05B83/363—Locks for passenger or like doors for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D19/00—Door arrangements specially adapted for rail vehicles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B79/00—Mounting or connecting vehicle locks or parts thereof
    • E05B79/10—Connections between movable lock parts
    • E05B79/20—Connections between movable lock parts using flexible connections, e.g. Bowden cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04—Electrical
    • E05B81/08—Electrical using electromagnets or solenoids
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/90—Manual override in case of power failure
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B85/00—Details of vehicle locks not provided for in groups E05B77/00 - E05B83/00
    • E05B85/20—Bolts or detents
    • E05B85/24—Bolts rotating about an axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
    • E05F15/635—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by push-pull mechanisms, e.g. flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/531—Doors

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a built-in door system for a railway vehicle.A driving motor drives a rack to drive a left door leaf hanging component and a right door leaf hanging component to move, and a door control unit transmits starting signals to an electromagnet component and a driving motor component; the locking mechanism is arranged in the middle of the bearing track beam, the middle of the swing arm is fixedly connected with one end of the shifting fork fixing shaft, the other end of the shifting fork fixing shaft can rotate on the lock seat, and two ends of the swing arm are respectively connected with the lock hook through the lock hook fixing shaft; the lower end of the shifting fork is fixedly connected with the shifting fork fixing shaft, and the rod end of the electromagnet assembly is connected with the upper end of the shifting fork; the lower end of the manual unlocking rod is hinged to the lock seat through a manual unlocking rod fixing shaft, and the middle of the manual unlocking rod is abutted to the upper end of the shifting fork. The invention integrates electric unlocking and manual unlocking into a whole, and the double-latch-hook structure ensures that a latch hook and a striker do not need to keep a gap, thereby solving the problem of difficult maintenance and debugging of the rotary lock mechanism of the concealed door system and strengthening the functions of sound insulation, heat insulation, rain and the like of the door system.

Description

Built-in door system for railway vehicle
Technical Field
The invention relates to an embedded door system for a railway vehicle. Belongs to the technical field of railway vehicles.
Background
The built-in door structure is widely applied to a traffic system by the characteristics of simple installation, light weight, small space and flexible operation. The existing built-in door system adopts a rotary lock structure, a motor needs to be rotated reversely when a door is opened, the reliability of unlocking can be guaranteed, a door leaf can be guaranteed to be closed in place only by lifting a lock hook when the door is closed, the logic judgment difficulty is increased, the electromagnet acts twice in the opening and closing process of the whole door system, the electromagnet is electrified to occupy the area close to the technical requirement, and the temperature of the electromagnet is easy to rise or even burn.
In the existing concealed door system adopting the rotary lock, when the door is opened, the motor needs to rotate reversely, so that a certain gap is kept between the rotary lock hook and the locking striker, the unlocking can be smoothly carried out, the door opening action is realized, the gap is difficult to realize in the actual operation process, if the gap is too large, the judgment of the motor is facilitated, but the light leakage and whistle blowing phenomena can occur at the middle seam of the door leaf, and the sound insulation, heat insulation and rain-showering functions of the door system are influenced; if the gap is too small, the motor reversal accumulated error is increased, a logic judgment error occurs, the risk of unlocking limitation exists, the door cannot be opened, and the driving safety is influenced; the gap adjustment has higher requirement on the quality of personnel, and the requirement can be met only by matching the field with the repeated debugging of the door leaf, thereby greatly increasing the labor intensity and reducing the reliability and the safety.
Disclosure of Invention
The invention aims to overcome the defects and provides a built-in door system for a railway vehicle.
The purpose of the invention is realized as follows:
the utility model provides an interior concealed door system for rail vehicle which characteristics are: the door control device comprises a driving motor assembly, a rack, a door control unit, a right door leaf hanging assembly, a locking mechanism, a left door leaf hanging assembly, a left door leaf, a right door leaf and a bearing track beam; the left door leaf hanging component is connected with the left door leaf, and the right door leaf hanging component is connected with the right door leaf;
the driving motor assembly is arranged at one end of the bearing track beam, the driving motor drives the rack to move transversely, and the rack drives the left door leaf hanging assembly and the right door leaf hanging assembly respectively;
the door control unit is arranged at the right part of the bearing track beam and transmits starting signals to the electromagnet assembly and the driving motor assembly;
the locking mechanism is arranged in the middle of the bearing track beam and comprises a locking hook, a shifting fork, a locking seat, a manual unlocking rod, an electromagnet assembly, a manual unlocking rod fixing shaft, a locking hook fixing shaft, a shifting fork fixing shaft and a swinging arm;
the lock seat is arranged on the bearing track beam, the middle part of the swing arm is fixedly connected with one end of the shifting fork fixing shaft, the other end of the shifting fork fixing shaft can rotate on the lock seat, and the two ends of the swing arm are respectively connected with the lock hook through the lock hook fixing shaft; the hook parts of the two lock hooks are respectively in one-to-one correspondence with the collision bolt of the left door leaf hanging component and the collision bolt of the right door leaf hanging component, and the lock hooks are matched with the collision bolts to be clamped or separated;
the lower end of the shifting fork is fixedly connected with a shifting fork fixing shaft, the electromagnet assembly is fixedly arranged on the bearing track beam, and the rod end of the electromagnet assembly is connected with the upper end of the shifting fork;
the lower end of the manual unlocking rod is hinged to the lock seat through a manual unlocking rod fixing shaft, and the middle of the manual unlocking rod is abutted to the upper end of the shifting fork.
Furthermore, the rod end of the electromagnet assembly is spherical, a round hole is formed in the upper end of the shifting fork, and the spherical rod end of the electromagnet assembly is arranged in the round hole in the upper end of the shifting fork.
Furthermore, the fixed shaft sleeve is provided with a shifting fork torsional spring, and the shifting fork torsional spring is positioned between the shifting fork and the lock seat.
Furthermore, a lock in-place switch is arranged on the lock seat, and when the lock hook is tightly matched with the collision bolt, the lock hook is contacted with the lock in-place switch to trigger a lock in-place signal.
Furthermore, a lock hook torsion spring is arranged on the lock hook fixing shaft.
And furthermore, the manual unlocking travel switch and the steel wire rope fixing stud are arranged on the lock seat, and the upper part of the manual unlocking rod is connected with the steel wire rope fixing stud through a steel wire rope.
Furthermore, the door-in-place switch is arranged at the left part of the bearing track beam, and the left door leaf hanging component is matched with the door-in-place switch.
Compared with the prior art, the invention has the beneficial effects that:
the built-in door system for the railway vehicle integrates electric unlocking and manual unlocking, and the double-latch-hook structure ensures that a latch hook and a striker do not need to keep a gap, solves the problem of difficulty in maintenance and debugging of a rotary lock mechanism of the built-in door system in the prior art, and enhances the functions of sound insulation, heat insulation, rain and the like of the door system.
In the whole door opening and closing process, the electromagnet assembly only acts once, and compared with similar products, the service life of the electromagnet assembly is prolonged by at least 1 time; in the whole door opening and closing process, the judgment logic of the door control unit is simplified, and the safety and the reliability of the door control unit are improved.
Drawings
Fig. 1 is a schematic view of an inside door system for a railway vehicle according to the present invention.
FIG. 2 is a schematic view of the locking mechanism of the present invention.
In the figure:
the door control device comprises a driving motor assembly 1, a rack 2, a door control unit 3, a right door leaf hanging assembly 4, a locking mechanism 5, a lock hook torsion spring 5.1, a shifting fork torsion spring 5.2, a lock hook 5.3, a shifting fork 5.4, a lock seat 5.5, a lock in-place switch 5.6, a manual unlocking rod 5.7, a manual unlocking travel switch 5.8, a steel wire rope fixing stud 5.9, an electromagnet assembly 5.10, a manual unlocking rod fixing shaft 5.11, a lock hook fixing shaft 5.12, a shifting fork fixing shaft 5.13, a swing arm 5.14, a left door leaf hanging assembly 6, a left door leaf 8, a right door leaf 9, a bearing track beam 10 and a door in-place switch 11.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1-2, the invention relates to a built-in door system for a rail vehicle, which comprises a driving motor component 1, a rack 2, a door control unit 3, a right door leaf hanging component 4, a locking mechanism 5, a left door leaf hanging component 6, a left door leaf 8, a right door leaf 9, a bearing track beam 10 and a door in-place switch 11; the left door leaf hanging component 6 is connected with the left door leaf 8, and the right door leaf hanging component 4 is connected with the right door leaf 9;
the driving motor assembly 1 is arranged at one end of the bearing track beam 10, the driving motor 1 drives the rack 2 to move transversely, and the rack 2 respectively drives the left door leaf hanging assembly 6 and the right door leaf hanging assembly 4 to enable the left door leaf 8 and the right door leaf 9 to move oppositely;
the door in-place switch 11 is arranged at the left part of the bearing track beam 10, and the left door leaf hanging component 6 is matched with the door in-place switch 11; the door control unit 3 is arranged at the right part of the bearing track beam 10, the door control unit 3 is used for judging the states of the door in-place switch 11 and the lock in-place switch 5.6, and the door control unit 3 transmits starting signals to the electromagnet assembly 5.10 and the driving motor assembly 1;
the locking mechanism 5 is arranged in the middle of the bearing track beam 10, and the locking mechanism 5 comprises a lock hook torsion spring 5.1, a shift fork torsion spring 5.2, a lock hook 5.3, a shift fork 5.4, a lock seat 5.5, a lock in-place switch 5.6, a manual unlocking rod 5.7, a manual unlocking travel switch 5.8, a steel wire rope fixing stud 5.9, an electromagnet assembly 5.10, a manual unlocking rod fixing shaft 5.11, a lock hook fixing shaft 5.12, a shift fork fixing shaft 5.13 and a swing arm 5.14;
the lock seat 5.5 is arranged on the bearing track beam 10, the middle part of the swing arm 5.14 is fixedly connected with one end of a shifting fork fixing shaft 5.13, the other end of the shifting fork fixing shaft 5.13 can rotate on the lock seat 5.5, two ends of the swing arm 5.14 are respectively connected with the lock hook 5.3 through lock hook fixing shafts 5.12, and the lock hook torsion springs 5.1 are arranged on the lock hook fixing shafts 5.12; the hook parts of the two lock hooks 5.3 are respectively in one-to-one correspondence with the collision bolts of the left door leaf hanging component 6 and the collision bolts of the right door leaf hanging component 4, and the lock hooks 5.3 are matched with the collision bolts to clamp (close) the door or separate (open) the door;
the lower end of a shifting fork 5.4 is fixedly connected with a shifting fork fixing shaft 5.13, an electromagnet assembly 5.10 is fixedly arranged on a bearing track beam 10, the rod end of the electromagnet assembly 5.10 is connected with the upper end of the shifting fork 5.4, the rod end of the electromagnet assembly 5.10 is spherical, the upper end of the shifting fork 5.4 is provided with a round hole, and the spherical rod end of the electromagnet assembly 5.10 is arranged in the round hole at the upper end of the shifting fork 5.4, so that the shifting fork 5.4 can be conveniently pulled by the electromagnet assembly 5.10;
the fixed shaft 5.13 is sleeved with a shifting fork torsion spring 5.2, and the shifting fork torsion spring 5.2 is positioned between the shifting fork 5.4 and the lock seat 5.5;
an in-place locking switch 5.6 is arranged on the lock seat 5.5, and when the lock hook 5.3 is tightly matched with the striker, the lock hook 5.3 is contacted with the in-place locking switch 5.6 to trigger an in-place locking signal;
the manual unlocking travel switch 5.8 and the steel wire rope fixing stud 5.9 are arranged on the lock base 5.5, the lower end of the manual unlocking rod 5.7 is hinged to the lock base 5.5 through the manual unlocking rod fixing shaft 5.11, the middle of the manual unlocking rod 5.7 is abutted to the upper end of the shifting fork 5.4, the upper portion of the manual unlocking rod 5.7 is connected with the steel wire rope fixing stud 5.9 through the steel wire rope, the manual unlocking travel switch 5.8 is arranged on the lock base 5.5, when the door needs to be manually unlocked, the manual unlocking travel switch 5.8 is opened, and the manual unlocking rod 5.7 can be pulled by the steel wire rope.
The working principle is as follows:
the built-in door is closed: when the concealed door needs to be closed, the door control unit 3 receives a door closing signal, the driving motor assembly 1 rotates forward to drive the toothed belt 2 to move, the left door leaf hanging assembly 6 and the right door leaf hanging assembly 4 move oppositely, the left door leaf hanging assembly 6 triggers the door in-place switch 11, meanwhile, the collision bolt of the left door leaf hanging assembly 6 and the right door leaf hanging assembly 4 respectively push the corresponding lock hooks 5.3, the lock hooks 5.3 drive the shifting fork 5.4 to rotate, and the shifting fork 5.4 rotates anticlockwise to the state in the figure 2; the shifting fork 5.4 triggers a lock in-place switch 5.6 to realize locking;
opening the concealed door: when the concealed door needs to be opened, the door control unit 3 judges that the door in-place switch 11 and the lock in-place switch 5.6 are in a trigger state, signals are sent to the electromagnet assembly 5.10 after conditions are met, the electromagnet assembly 5.10 pulls the shifting fork 5.4 to enable the shifting fork 5.4 to rotate clockwise to release the locking hook, the locking hook 5.3 is separated from the collision bolt to realize unlocking action, the lock in-place switch 5.6 transmits a release signal to the door control unit 3, the door control unit 3 gives a reverse rotation instruction to the driving motor assembly 1 to drive the toothed belt 2 to move to pull the left door leaf hanging assembly 6 and the right door leaf hanging assembly 4 to move backwards, and door opening action is realized.
Manual unlocking: when the electromagnet assembly 5.10 fails, the manual unlocking travel switch 5.8 is opened, the steel wire rope of the steel wire rope fixing stud 5.9 is pulled, the steel wire rope drives the manual unlocking rod 5.7 to rotate clockwise, the middle of the manual unlocking rod 5.7 abuts against the upper end of the shifting fork 5.4, the shifting fork 5.4 rotates clockwise, the locking hook 5.3 is disengaged from the striker, and unlocking is achieved.
The built-in door system for the railway vehicle integrates electric unlocking and manual unlocking, and the double-latch-hook structure ensures that a latch hook and a striker do not need to keep a gap, solves the problem of difficulty in maintenance and debugging of a rotary lock mechanism of the built-in door system in the prior art, and enhances the functions of sound insulation, heat insulation, rain and the like of the door system.
In the whole door opening and closing process, the electromagnet assembly 5.10 only acts once, and compared with similar products, the service life of the electromagnet assembly 5.10 is prolonged by at least 1 time; in the whole door opening and closing process, the judgment logic of the door control unit 3 is simplified, and the safety and the reliability of the door control unit 3 are improved;
in the above embodiments, the present invention is described only by way of example, but those skilled in the art, after reading the present patent application, may make various modifications to the present invention without departing from the spirit and scope of the present invention.

Claims (7)

1. A concealed door system for a railway vehicle, characterized in that: the door control device comprises a driving motor assembly, a rack, a door control unit, a right door leaf hanging assembly, a locking mechanism, a left door leaf hanging assembly, a left door leaf, a right door leaf and a bearing track beam; the left door leaf hanging component is connected with the left door leaf, and the right door leaf hanging component is connected with the right door leaf;
the driving motor assembly is arranged at one end of the bearing track beam, the driving motor drives the rack to move transversely, and the rack drives the left door leaf hanging assembly and the right door leaf hanging assembly respectively;
the door control unit is arranged at the right part of the bearing track beam and transmits starting signals to the electromagnet assembly and the driving motor assembly;
the locking mechanism is arranged in the middle of the bearing track beam and comprises a locking hook, a shifting fork, a locking seat, a manual unlocking rod, an electromagnet assembly, a manual unlocking rod fixing shaft, a locking hook fixing shaft, a shifting fork fixing shaft and a swinging arm;
the lock seat is arranged on the bearing track beam, the middle part of the swing arm is fixedly connected with one end of the shifting fork fixing shaft, the other end of the shifting fork fixing shaft can rotate on the lock seat, and the two ends of the swing arm are respectively connected with the lock hook through the lock hook fixing shaft; the hook parts of the two lock hooks are respectively in one-to-one correspondence with the collision bolt of the left door leaf hanging component and the collision bolt of the right door leaf hanging component, and the lock hooks are matched with the collision bolts to be clamped or separated;
the lower end of the shifting fork is fixedly connected with a shifting fork fixing shaft, the electromagnet assembly is fixedly arranged on the bearing track beam, and the rod end of the electromagnet assembly is connected with the upper end of the shifting fork;
the lower end of the manual unlocking rod is hinged to the lock seat through a manual unlocking rod fixing shaft, and the middle of the manual unlocking rod is abutted to the upper end of the shifting fork.
2. The concealed door system for a railway vehicle according to claim 1, wherein: the rod end of the electromagnet assembly is spherical, a round hole is formed in the upper end of the shifting fork, and the spherical rod end of the electromagnet assembly is arranged in the round hole in the upper end of the shifting fork.
3. The concealed door system for a railway vehicle according to claim 1, wherein: the fixed shaft sleeve is provided with a shifting fork torsional spring which is positioned between the shifting fork and the lock seat.
4. The concealed door system for a railway vehicle according to claim 1, wherein: the lock seat is provided with a lock in-place switch, and when the lock hook is tightly matched with the collision bolt, the lock hook is contacted with the lock in-place switch to trigger a lock in-place signal.
5. The concealed door system for a railway vehicle according to claim 1, wherein: the locking hook torsion spring is arranged on the locking hook fixing shaft.
6. The concealed door system for a railway vehicle according to claim 1, wherein: the manual unlocking travel switch and the steel wire rope fixing stud are arranged on the lock base, and the upper portion of the manual unlocking rod is connected with the steel wire rope fixing stud through the steel wire rope.
7. The concealed door system for a railway vehicle according to claim 1, wherein: the door-in-place switch is arranged at the left part of the bearing track beam, and the left door leaf hanging component is matched with the door-in-place switch.
CN201911406053.2A 2019-12-31 2019-12-31 Built-in door system for railway vehicle Pending CN110952845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911406053.2A CN110952845A (en) 2019-12-31 2019-12-31 Built-in door system for railway vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911406053.2A CN110952845A (en) 2019-12-31 2019-12-31 Built-in door system for railway vehicle

Publications (1)

Publication Number Publication Date
CN110952845A true CN110952845A (en) 2020-04-03

Family

ID=69985176

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911406053.2A Pending CN110952845A (en) 2019-12-31 2019-12-31 Built-in door system for railway vehicle

Country Status (1)

Country Link
CN (1) CN110952845A (en)

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Inventor after: Wang Jianqun

Inventor after: Zhang Ge

Inventor before: Wang Jianqun