Emergency door lock structure of rail transit platform screen door

Abstract

The utility model discloses an emergency door lock structure of a rail transit platform screen door and belongs to the field of rail transit equipment. The emergency door lock structure comprises a supporting beam, a locking piece is fixedly installed at the position, close to the edge, of the surface of one side of the supporting beam through a bolt, a threaded rod is placed on the surface of one side of the supporting beam, and the outer arc face of the threaded rod is movably connected with a spherical bearing. And a threaded sleeve is fixedly installed on one side of the spherical bearing, a roller is fixedly installed on the top of the outer arc face of the threaded sleeve, the outer arc face of the roller is slidably connected to the inner side wall of the supporting beam on one side in a clamped mode, and a locking guarantee can be provided for the shielding door in an emergency through cooperative cooperation of the door lock assembly and the locking piece. The safety of rail transit operation is practically maintained, the situation that a motor accidentally operates to drive a screw to rotate, and then an established emergency locking state is damaged is effectively avoided, it is ensured that all components are maintained at the initially-set safe locking position, and the locking safety and reliability of the rail transit platform screen door in the emergency state are comprehensively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit equipment technical field, concretely is a rail transit screen door emergency door lock structure. BACKGROUND

[0002] The subway platform screen door is installed at the abutting part of the subway platform and the subway track, and its main function is to prevent passengers from accidentally falling into the subway track, in normal operation, the screen door is in the closed state, and the track side and the platform side are isolated, but in emergency situations such as fire and train failure, passengers need to pass through the emergency door for evacuation, at this time, the reliability and convenience of the emergency door lock are crucial.

[0003] Under the current design architecture of the emergency door lock of the rail transit screen door, the door lock mechanism usually covers the upper and lower locking tongues, the supporting lock body and the connecting rod mechanism. The operation principle mainly depends on the spring or elastic sheet force to achieve the locking effect of the locking tongue, ensuring the stability of the screen door in the closed state. However, this traditional structure has significant drawbacks, the most prominent of which is the poor synchronization of the upper and lower locking tongues when they are in action. Since the upper and lower locking tongues are driven by independent springs or elastic sheets, they are affected by multiple factors such as manufacturing process deviation, component wear and uneven stress, making it difficult to accurately synchronize them during opening and closing. This not only causes the door lock to jam, reducing the efficiency of passenger evacuation in emergency situations, but also accelerates the wear of the locking tongue and related components due to frequent asynchronous friction and collision, greatly reducing the reliability of the entire door lock system and making it difficult to meet the stringent requirements of the rail transit field for emergency safety protection.

[0004] Therefore, the utility model provides a rail transit screen door emergency door lock structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] (I) Technical problems solved

[0006] The utility model provides a rail transit screen door emergency door lock structure, aiming to solve the problems raised in the background technology.

[0007] (II) Technical solutions

[0008] To achieve the above object, the utility model provides the following technical scheme: including support beam, the side surface of support beam near the edge place is equipped with locking piece through bolt fixed installation, the bottom of the upper surface of locking piece is equipped with locking groove, the middle part of the inner side wall of locking groove is equipped with locking magnetic attraction piece, the side surface of support beam is equipped with screw rod, the outer cam surface of screw rod is movably connected with spherical bearing, the side fixed mounting of spherical bearing is equipped with threaded sleeve, the outer cam surface top of threaded sleeve is fixedly installed with drum, the outer cam surface of drum is slidably connected on the inner side wall of one side support beam, the inner side wall of drum is fixedly installed with magnetic attraction ring, the outer cam surface of magnetic attraction ring is adapted with locking magnetic attraction piece, the drum is movably connected in locking groove.

[0009] As a preferred technical scheme of the application, the locking groove is in a semi-enclosed structure, and a door lock assembly is movably connected to the outer cam surface of one end of the screw rod.

[0010] As a preferred technical scheme of the application, the side surface top of the linkage plate is provided with a locking portion, the locking portion is connected to one end of the screw rod, the upper surface of the linkage plate is provided with a bending portion, the linkage plate is connected to a base through a rotating shaft near the bending portion, and the base is in the same plane as the support beam.

[0011] As a preferred technical scheme of the application, an arc-shaped limiting groove is formed in one side of the linkage plate, a guide column is movably connected to the inner cam surface of the arc-shaped limiting groove, and the guide column is fixedly installed on the surface of the base on one side.

[0012] As a preferred technical scheme of the application, a positioning groove is formed in one side of the linkage plate near the arc-shaped limiting groove, a push rod motor is fixedly installed on the bottom of the side surface of the base through a bolt, and a rocking plate is movably connected to one side of the base near the linkage plate through a rotating shaft.

[0013] As a preferred technical scheme of the application, a top holding portion is arranged on the top of the rocking plate, the top holding portion is adapted to be overlapped with one side of the linkage plate, and an extension end is arranged on the lower end of the rocking plate and extends to one side of the push rod motor.

[0014] As a preferred technical scheme of the application, a groove is arranged on the extension end of one side of the rocking plate, the inner cam surface of the groove is in abutment with the extension end of the push rod motor, and a linkage spring is connected to the bottom of the rocking plate.

[0015] As a preferred technical scheme of the application, the other end of the linkage spring is sleeved on the surface of the bending portion, a hinged plate is movably connected to one side of the push rod motor, a pin sleeve is connected to the top of the side surface of the hinged plate, and the pin sleeve extends into the positioning groove.

[0016] (III) Beneficial Effects

[0017] Through the cooperation of the door lock assembly and the locking piece, locking protection can be provided for the shield door in an emergency, the safety of rail transit operation is effectively maintained, the rotation of the screw caused by the unexpected operation of the motor is effectively avoided, the established emergency locking state is prevented from being damaged, each component is ensured to maintain the initial set safe locking position, and the locking safety and reliability of the rail transit shield door in an emergency are comprehensively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure diagram of one end of a shield door lock of an emergency door lock structure of a rail transit shield door.

[0019] Figure 2 It is an overall side view structure diagram of an emergency door lock structure of a rail transit shield door.

[0020] Figure 3 It is a door lock assembly structure diagram of an emergency door lock structure of a rail transit shield door.

[0021] Figure 4 It is a one-end locking piece structure diagram of an emergency door lock structure of a rail transit shield door.

[0022] Figure 5 It is a top view overall structure diagram of an emergency door lock structure of a rail transit shield door.

[0023] In the drawings:

[0024] 1, support beam; 2, locking piece; 201, locking groove; 203, dead magnetic attraction piece; 3, screw; 4, spherical bearing; 5, threaded sleeve; 6, roller; 601, magnetic attraction ring; 7, door lock assembly; 701, linkage plate; 702, locking part; 703, bending part; 704, arc-shaped limiting groove; 705, guide column; 706, positioning groove; 707, rocking plate; 708, top holding part; 709, groove; 710, linkage spring; 711, hinged plate; 712, pin column sleeve; 8, base; 9, push rod motor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] The present application provides an emergency door lock structure of a rail transit shield door, which comprises a support beam, a locking piece, a screw, a spherical bearing, a threaded sleeve, a roller, a magnetic attraction ring, a door lock assembly, a base and a push rod motor. Figures 1 to 5As shown, including support beam 1, the side surface of support beam 1 is fixedly installed with locking member 2 near the edge by bolts, the bottom of the upper surface of locking member 2 is provided with locking groove 201, the middle of the inner side wall of locking groove 201 is provided with locking magnetic attraction member 203, the side surface of support beam 1 is placed with screw rod 3, the outer arc surface of screw rod 3 is movably connected with spherical bearing 4, one side of spherical bearing 4 is fixedly installed with threaded sleeve 5, the outer arc surface top of threaded sleeve 5 is fixedly installed with roller 6, the outer arc surface of roller 6 is slidably connected on the inner side wall of one side support beam 1, the inner side wall of roller 6 is fixedly installed with magnetic attraction ring 601, the outer arc surface of magnetic attraction ring 601 is magnetically attracted to locking magnetic attraction member 203, and roller 6 is movably connected into locking groove 201.

[0027] In the mechanical structure system of the rail transit shielding door, the support beam 1 is usually fixedly installed in the frame of the rail door plate, and the screw rod 3 is installed on the side surface of the support beam 1 at a specific position by means of the coupler on one side of the motor. When the motor receives the corresponding driving instruction and starts to operate, the screw rod 3 will rotate to achieve threaded connection with the spherical bearing 4 and the threaded sleeve 5. The spherical bearing 4 is used for reliable connection with the shielding door. In this way, when the screw rod 3 rotates, it can drive the shielding door to move stably along the axial direction of the screw rod 3 according to the threaded transmission principle, so as to realize the normal opening and closing action of the shielding door and accurately meet the daily operation demand.

[0028] When facing an emergency situation, the threaded sleeve 5 will drive the spherical bearing 4 connected thereto to quickly approach the other end of the support beam 1 under the action of the pre-set emergency driving mechanism. At the same time, the roller 6 connected to the threaded sleeve 5 will also start to rotate, and the rotation track will move towards the locking groove 201 until it is connected into the locking groove 201. It is worth noting that the internal cavity of the locking groove 201 is adapted to the diameter of the roller 6, so that the roller 6 can enter the inside of the locking member 2 without any obstruction. To further ensure the accuracy of this key locking action, the locking magnetic attraction member 203 is connected inside the locking groove 201, and the magnetic attraction ring 601 is also installed inside the roller 6. When powered on, the locking magnetic attraction member 203 and the magnetic attraction ring 601 will instantly generate mutual attraction force therebetween. This magnetic force can effectively overcome the resistance generated when the roller 6 enters the locking groove 201, so that it can smoothly enter the locking groove 201 and quickly achieve the locked state. In this way, the locking protection of the shielding door can be provided in an emergency situation, and the safety of rail transit operation can be effectively maintained.

[0029] At the same time, in actual operation scenarios, if simply relying on magnetic attraction and locking mechanism to maintain the emergency locking state of the shielding door, after a long time of continuous work, due to the influence of many factors such as environmental humidity, temperature difference change and metal material itself characteristics, the key components such as screw rod 3 and locking part 2 are prone to rust, which seriously threatens the stability and reliability of the locking function.

[0030] The locking groove 201 is a semi-enclosed structure, and the outer arc surface of one end of the screw rod 3 movably clamps the door lock assembly 7. The door lock assembly 7 includes a linkage plate 701 movably clamped at one end of the screw rod 3. The linkage plate 701 is provided with a locking portion 702 on the top surface of one side. The locking portion 702 is clamped at one end of the screw rod 3. The upper surface of the linkage plate 701 is provided with a bent portion 703. The linkage plate 701 is connected with the base 8 through a rotating shaft near the bent portion 703. The base 8 is in the same plane as the supporting beam 1. An arc-shaped limiting groove 704 is formed on one side of the linkage plate 701. The inner arc surface of the arc-shaped limiting groove 704 movably clamps a guide column 705. The guide column 705 is fixedly installed on the surface of the base 8 on one side. A positioning groove 706 is formed on one side of the linkage plate 701 near the arc-shaped limiting groove 704. A push rod motor 9 is fixedly installed on the bottom of the surface of the base 8 on one side through a bolt. A rocking plate 707 is movably connected to the base 8 through a rotating shaft on one side near the linkage plate 701. The top of the rocking plate 707 is provided with a top holding portion 708. The top holding portion 708 is adapted to the side of the linkage plate 701. The lower end of the rocking plate 707 is provided with an extended end, which extends to one side of the push rod motor 9. A groove 709 is formed on the extended end of one side of the rocking plate 707. The inner arc surface of the groove 709 abuts against the extended end of the push rod motor 9. The bottom of the rocking plate 707 is connected with a linkage spring 710. The other end of the linkage spring 710 is sleeved on the surface of the bent portion 703. A hinged plate 711 is movably connected to one side of the push rod motor 9. A pin sleeve 712 is connected to the top surface of one side of the hinged plate 711. The pin sleeve 712 extends into the positioning groove 706.

[0031] The linkage plate 701 is added at the same end of the screw rod 3 and the screw rod 3, and is clamped between the linkage plate 701 and the screw rod 3. It relies on the locking portion 702 formed on the surface of the linkage plate 701. To achieve the stable clamping of the locking portion 702 to the screw rod 3, on the one hand, when an emergency occurs, the system will respond immediately and cut off the power supply of the motor to prevent the screw rod 3 from continuing to rotate, which can effectively avoid the screw rod 3 from rotating due to the unexpected operation of the motor, thereby damaging the established emergency locking state and ensuring that each component maintains the initial set safe locking position.

[0032] On the other hand, the control system will synchronously activate the push rod motor 9, and make the extension end of one side move forward smoothly until it abuts against the groove 709 designed at the bottom of the rocking plate 707, and the rocking plate 707 is connected with the base 8 by the top bearing connection mode, so that it can rotate smoothly with the top holding portion 708 as the center, when the extension end of the push rod motor 9 applies the pushing force, the bottom of the rocking plate 707 will move from left to right according to the direction of the applied force, and correspondingly, the top of the rocking plate 707 will stably move downward from the initial static point, and is overlapped on the protruding segment of one side of the linkage plate 701, and the linkage spring 710 is further connected at the bottom end of the rocking plate 707, one end of the linkage spring 710 is connected with the top of the linkage plate 701, so that when the rocking plate 707 is displaced by the pushing force, the pulling force from left to right will make the linkage spring 710 stretch rapidly, and then continuously and stably pull the linkage plate 701, under the driving of the pulling force, the linkage plate 701 will rotate around the top rotating shaft, and the pulling end thereof moves downward, so that the locking portion 702 is lifted upward until it touches the screw rod 3, and ensures that the bottom is stably abutted against the outer curved surface of the screw rod 3.

[0033] In order to effectively resist the risk of separation of the linkage plate 701 and the screw rod 3 caused by external vibration and the like, the pin sleeve 712 is fixedly installed in the positioning groove 706 of one side of the linkage plate 701, when the linkage plate 701 swings according to the above-mentioned mechanism, the hinged plate 711 connected therewith will swing synchronously, and by the positioning and restraining action of the pin sleeve 712, the real-time position of the linkage plate 701 can be accurately locked, and the situation that the effective locking of the screw rod 3 is lost due to the position deviation can be effectively prevented, and the locking safety and reliability of the rail transit shielding door in the emergency state are comprehensively ensured.

[0034] The above only describes the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. An emergency door lock structure of a rail transit shielding door, comprising a support beam (1), characterized in that: The side surface of the support beam (1) is provided with a locking piece (2) near the edge, the bottom of the upper surface of the locking piece (2) is provided with a locking groove (201), the middle of the inner side wall of the locking groove (201) is provided with a locking magnetic piece (203), the side surface of the support beam (1) is provided with a screw rod (3), the outer arc surface of the screw rod (3) is movably connected with a spherical bearing (4), one side of the spherical bearing (4) is fixedly provided with a threaded sleeve (5), the outer arc surface top of the threaded sleeve (5) is fixedly provided with a roller (6), the outer arc surface of the roller (6) is slidably connected with the inner side wall of the support beam (1), the inner side wall of the roller (6) is fixedly provided with a magnetic attraction ring (601), the outer arc surface of the magnetic attraction ring (601) is magnetically attracted to the locking magnetic piece (203), and the roller (6) is movably connected in the locking groove (201).

2. The emergency door lock structure of a rail transit shielding door according to claim 1, characterized in that: The locking groove (201) is in a semi-enclosed structure, and the outer arc surface of one end of the screw rod (3) is movably connected with a door lock assembly (7), the door lock assembly (7) comprises a linkage plate (701) movably connected with one end of the screw rod (3).

3. The emergency door lock structure of a rail transit shielding door according to claim 2, characterized in that: The side surface top of the linkage plate (701) is provided with a locking part (702), the locking part (702) is connected with one end of the screw rod (3), the upper surface of the linkage plate (701) is provided with a bending part (703), the linkage plate (701) is connected with a base (8) near the bending part (703) through a rotating shaft, and the base (8) is in the same plane as the support beam (1).

4. The emergency door lock structure of a rail transit shielding door according to claim 3, characterized in that: An arc-shaped limiting groove (704) is formed in one side of the linkage plate (701), and a guide column (705) is movably connected with the inner arc surface of the arc-shaped limiting groove (704).

5. The emergency door lock structure of a rail transit shielding door according to claim 4, characterized in that: A positioning groove (706) is formed in one side of the linkage plate (701) near the arc-shaped limiting groove (704), a push rod motor (9) is fixedly connected to the bottom of one side surface of the base (8) through bolts, and a rocking plate (707) is movably connected to one side of the base (8) near the linkage plate (701) through a rotating shaft.

6. The emergency door lock structure of a rail transit shielding door according to claim 5, characterized in that: The top of the rocking plate (707) is provided with a top holding part (708), the top holding part (708) is lapped with one side of the linkage plate (701), and the lower end of the rocking plate (707) is provided with an extension end and extends to one side of the push rod motor (9).

7. The emergency door lock structure of a rail transit shielding door according to claim 6, characterized in that: A groove (709) is formed in the extension end of one side of the rocking plate (707), and the inner arc surface of the groove (709) abuts with the extension end of the push rod motor (9).

8. The emergency door lock structure of a rail transit shielding door according to claim 7, characterized in that: The bottom of the rocking plate (707) is connected with a linkage spring (710). The other end of the linkage spring (710) is sleeved on the surface of the bending part (703), one side of the push rod motor (9) is movably connected with a hinged plate (711), the top of one side surface of the hinged plate (711) is connected with a pin sleeve (712), and the pin sleeve (712) extends into the positioning groove (706).

Images