Rail transit door system

Abstract

The present invention discloses a rail transit door system, wherein an arm support is provided with a vertical pole, a rod head and an insertion rod are installed at the upper and lower ends of the vertical pole, and an elastic member is installed at the lower end of the vertical pole, which is on the same axis as the insertion rod and is in a deformation and force storage state, wherein: the rod head and the insertion rod are staggered with respect to the horizontal direction, and further comprises a sliding sleeve parallel to the movement trajectory of the door carrier, one of the inner walls of the sliding sleeve is pushed by the rod head, and a locking member is rotated at the pushed position to lock the insertion rod under the pressure of the rod head. The rail transit door system provided by the present invention can immediately insert the rounded position of the insertion rod end into the slot by the elastic member under the action of the unlocked rod head to restore the deformation, thereby realizing the trinity of the arm support, the insertion rod and the door carrier, so that the pressure on the power connection part of the car door is offset by the plug-in fixing effect, thereby enabling the connection part to stop damage in time when it is stressed, greatly reducing damage to important components and loss in normal use of the car door.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle doors, and in particular to a rail transit door system. Background Art

[0002] Most of the doors in urban rail transit vehicles use common plug-and-slide doors, which means that the doors have two actions: plugging and pulling. This can reduce air resistance and noise during vehicle driving, and improve energy consumption and comfort.

[0003] According to the publication (announcement) number: CN111305690B, the publication (announcement) date: 2021-10-01, a load-bearing drive device for a vehicle sliding door is disclosed, including a power drive unit and a transmission mechanism on both sides thereof, and the transmission mechanism is provided with a sliding cylinder, a swing arm and a balance arm, and the swing arm is provided with a roller guided by a guide rail, and also includes a swing arm and a balance arm connected to drive the door carrying frame equipped with the vehicle door to perform a sliding action.

[0004] In the prior art including the above-mentioned patent, when rail transit vehicles are dealing with some track lines with large passenger flow and during the morning rush hour, the number of people getting on the vehicle and breaking through the door will increase accordingly, and the doors or bodies will be equipped with a variety of sensors to identify people or objects passing through the door. When people rub the sealing strip on the door to enter the vehicle, the X-ray, infrared and sound wave sensors usually do not judge it as a foreign object, and the door will close normally. However, when the door hits a person or object during the closing process, the force or pressure sensor will identify the foreign object and retract the door, but the door is already under pressure during this process. state, and people or objects entering the car will also provide a thrust in a specified direction to the door edge, and the thrust will continue when the door starts to retract, thereby putting pressure on the connecting parts at the upper and lower ends of the door, and then causing pressure damage to the swing arm, balance arm, door frame and roller connection positions. As the number of times the door is subjected to force increases, coupled with the weight of the door itself, the wear of the connection position will also increase exponentially, especially causing serious damage to the important parts hidden in the upper end of the door, and gradually causing the two doors to close unevenly, the door sealing efficiency will be reduced, the body resistance and noise will also be aggravated, and the normal service life of the parts on the door will be shortened. Summary of the Invention

[0005] The purpose of the present invention is to provide a rail transit door system, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A rail transit door system comprises a slide member and an arm bracket on which a balance arm is rotatably provided, a door carrying frame is fixedly mounted on the balance arm, a vertical rod is provided in the arm bracket, a rod head and an insertion rod are mounted on the upper and lower ends of the vertical rod, and an elastic member is mounted on the lower end of the vertical rod and is coaxial with the insertion rod and is in a deformation and force storage state, wherein:

[0008] The rod head and the insertion rod are staggered in the horizontal direction;

[0009] The sliding sleeve is parallel to the movement track of the door carrier, one inner wall of the sliding sleeve is pushed by the rod head, and a locking piece is rotated at the pushed position to lock the inserted rod under the pressure of the rod head;

[0010] In the locked state, the rod head maintains a predetermined distance from the other inner wall of the sliding sleeve;

[0011] The insertion rod is plug-fitted into the slot provided on the door carrying frame.

[0012] Preferably, the insertion rod is provided with a rod inclined surface, and the balancing arm is provided with a clamping rod that is slidably matched with the rod inclined surface, and the elastic member is compressed in the sliding state.

[0013] Preferably, the lock is divided into a rotating shaft and a lever and a pin on both sides thereof according to function, wherein:

[0014] The end of the shift rod is pushed by the pushing surface arranged on the rod head, so that the pin rod is inserted into the locking groove provided on the rod head.

[0015] Preferably, the balance arm is hinged at the end of the arm bracket, so that the clamp rod slides to a predetermined position on the rod inclined surface, and the shift rod is reset and slides from the push surface into the receiving groove provided on the rod head.

[0016] Preferably, the shift rod slides to a predetermined position of the receiving slot to restore the elastic member to its original shape, and the end of the insertion rod is inserted into the inner slot provided on the card slot.

[0017] Preferably, when the door carrying frame moves to the end position, the insertion rod is pulled by the door carrying frame to apply reverse pressure to the elastic member.

[0018] Preferably, it further comprises a buffer rod provided with a spring and engaging with the slide cylinder in a push-fit manner.

[0019] Preferably, a reset oblique rod is provided on the buffer rod, and the reset oblique rod is slidably matched with the vertical rod to unlock the lower plug rod and lock it.

[0020] Preferably, the sliding sleeve is provided with a fastener arranged opposite to the locking element, and the fastener is provided with a limiting block fixed to the rod head in a default state.

[0021] Preferably, it also includes an elastic strip for pushing the limit block to release the fixation.

[0022] In the above technical solution, a rail transit door system provided by the present invention has the following beneficial effects: when the car door collides with people or objects while running on a straight track path, the car door immediately retreats under the action of the sensor, so that the unlocked rod head can immediately insert the rounded corner position of the insertion rod end into the slot under the action of the elastic part to restore the deformation, realizing the trinity of the arm bracket, insertion rod and door carrying frame, so that the pressure on the power connection part of the car door is offset by the plug-in fixing effect, and then the connection part can stop the loss in time when it is under force, greatly reducing the damage to important components and the loss of normal use of the car door, shortening the number of inspections and workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the assembly of the slide member and its upper swing wall, balance arm, guide rail frame, door carrier, and vehicle door provided in an embodiment of the present invention;

[0025] Figure 2 A front cross-sectional view of the guide rail frame, arm bracket, and inner rod assembly provided by an embodiment of the present invention;

[0026] Figure 3 A schematic side cross-sectional view of the assembly of the guide rail frame, the arm bracket and the inner rod thereof provided in an embodiment of the present invention;

[0027] Figure 4 An exploded schematic diagram of a slide member and its upper arm bracket, elastic pressure strip and buffer rod provided in an embodiment of the present invention;

[0028] Figure 5 A schematic top cross-sectional view of a slide member and an upper arm support thereof provided in an embodiment of the present invention;

[0029] Figure 6 A schematic diagram showing the change in effective travel of the upper hoop rod and the rod inclined surface after the arm rod position is offset according to an embodiment of the present invention;

[0030] Figure 7 for Figure 5 A magnified schematic diagram of point A;

[0031] Figure 8 for Figure 5 An enlarged schematic diagram of point B;

[0032] Figure 9A schematic diagram of a right side view of a top cross-section of a slide member and an upper arm support thereof provided by an embodiment of the present invention;

[0033] Figure 10 A schematic diagram showing the assembly of an arm rod, a plug rod, a rod head and a slide from a left side perspective according to an embodiment of the present invention;

[0034] Figure 11 A schematic diagram of the assembly of the arm rod, the insertion rod, the rod head and the slide provided in an embodiment of the present invention from a right side upward perspective;

[0035] Figure 12 A schematic diagram of a sliding assembly of an insert rod, a vertical rod, a rod head and a top surface cross-section provided in an embodiment of the present invention;

[0036] Figure 13 A front cross-sectional view of the fastener provided in an embodiment of the present invention being assembled in a slideway, a switching hole, and a sliding hole;

[0037] Figure 14 A schematic diagram of the lock structure provided by an embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the fastener structure provided by an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Slide member; 11. Arm bracket; 2. Balance arm; 21. Arm rod; 22. Clamp rod; 3. Door carrier; 31. Card slot; 32. Inner slot; 4. Guide rail frame; 41. Slide; 42. Slide hole; 43. Switch hole; 5. Insert rod; 51. Rod inclined surface; 52. Vertical rod; 53. Elastic member; 54. Rod head; 55. Push surface; 56. Locking slot; 57. Storage slot; 6. Sliding sleeve; 7. Locking member; 71. Push rod; 72. Pin rod; 8. Fastener; 81. Limit block; 82. Connecting slider; 83. Switching block; 84. Guide protrusion; 85. Elastic pressure strip; 9. Buffer rod; 91. Reset diagonal rod. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-15 As shown, a rail transit door system includes a slide member 1 and an arm bracket 11 on which a balance arm 2 is rotatably provided. A door carrier 3 is fixedly installed on the balance arm 2. A vertical rod 52 is provided in the arm bracket 11. A rod head 54 and an insertion rod 5 are installed at the upper and lower ends of the vertical rod 52. An elastic member 53 is installed at the lower end of the vertical rod 52 and is coaxial with the insertion rod 5 and is in a deformation and force storage state.

[0043] The rod head 54 and the insertion rod 5 are staggered with respect to the horizontal direction;

[0044] The sliding sleeve 6 is parallel to the movement trajectory of the door frame 3, one inner wall of the sliding sleeve 6 is pushed by the rod head 54, and the pushed position is rotated to form a lock 7 which is pressed by the rod head 54 to lock the insertion rod 5;

[0045] In the locked state, the rod head 54 maintains a predetermined distance from the other inner wall of the sliding sleeve 6;

[0046] The insertion rod 5 is plug-fitted into the slot 31 provided on the door carrying frame 3 .

[0047] Specifically, the vehicle door is mounted on the door carrying frame 3, and the swing arm is hinged between the slide member 1 and the door carrying frame 3, and the roller on the swing arm slides in the straight and arc-shaped tracks provided on the guide rail frame 4 installed on the top of the vehicle body door. The installation method and the movement method are both existing technologies and will not be described here. The lower end face of the guide rail frame 4 is provided with a slideway 41 for the sliding sleeve 6 to slide, and the sliding port faces the vehicle door, so that the sliding sleeve 6 is in a driven moving state, rather than being driven by a power source or a spring or tension spring.

[0048] Furthermore, since the door carrier 3 is located at the highest position of the vehicle door, when the vehicle door is pushed toward the inside of the vehicle, the door carrier 3 is offset in the horizontal direction, the upper and lower positions, or both. Under the fixed condition of the slot 31 into which the insertion rod 5 with a rectangular cross-section enters, the inserted insertion rod 5 can effectively limit this part of the offset force. At the same time, the offset in the direction of the vehicle door's moving path can be directly locked by the insertion rod 5, thereby solving the force problem.

[0049] Furthermore, there is sufficient space in the slideway 41 for the rod head 54 to move along the deformation direction of the elastic member 53, and the elastic member 53 is specifically a spring.

[0050] When the car door runs on a straight track path and collides with people or objects, the car door immediately retreats under the action of the sensor, and the rod head 54 slides in the opposite direction from the sliding sleeve 6, so that the unlocked rod head 54 is immediately inserted into the slot 31 at the rounded position of the end of the insertion rod 5 under the action of the elastic member 53 to restore the deformation, realizing the trinity of the arm bracket 11, the insertion rod 5 and the door carrying frame 3 (the three are kept plugged and fixed), so that the pressure on the power connection part of the car door is offset by the plug-in fixing effect, and then the connection part can stop the loss in time when it is under force, greatly reducing the damage to important components and the loss of normal use of the car door, shortening the number of inspections and workload.

[0051] As a further embodiment of the present invention, a rod slope 51 is provided on the insertion rod 5, and a clamp rod 22 is provided on the balance arm 2 to slide with the rod slope 51, and the elastic member 53 is compressed in the sliding state.

[0052] Specifically, the balance arm 2 is extended at its rotational position to form an arm rod 21 , and the arm rod 21 is located in a chamber defined in the arm support 11 . A gap communicating with the chamber is defined below the arm support 11 for operation from below.

[0053] Furthermore, the clamp rods 22 are symmetrically distributed on the arm rod 21 in the upper and lower parts, and the ends of the two clamp rods 22 have protrusions arranged facing each other (the protrusions have an arc surface that reduces the sliding friction with the rod inclined surface 51, and a rubber strip is installed on the rod inclined surface 51), and the rod inclined surface 51 has a low position and a high position, and the high position is toward the rounded corner position of the end of the insertion rod 5.

[0054] Furthermore, since the door carrying frame 3 will act on the swing arm and the balance arm 2 synchronously when it is subjected to force, the two are subjected to the same force (the force situation is the existing technology and will not be described here), so that the two are on themselves.

[0055] When the vehicle door is in conflict, the swing arm and the balance arm 2 are simultaneously subjected to force, prompting the arc-shaped motion of the clamp rod 22 to slide the protrusion thereon to a higher position. At this time, the insertion rod 5 is subjected to force and uses the elastic member 53 that is deformed again to absorb energy, so as to reduce the damage caused by the counteracting force to the rotation position of the balance arm 2. At the same time, the door carrier 3 is buffered, so the swing arm is also buffered, thereby reducing the direct extrusion damage to the connection position caused by the counteracting force.

[0056] As another embodiment further provided by the present invention, the lock member 7 is divided into a rotating shaft and a lever 71 and a pin 72 on both sides thereof according to their functions, wherein:

[0057] The end of the shift rod 71 is pushed by the pushing surface 55 provided on the rod head 54 , so that the pin rod 72 is inserted into the locking groove 56 provided on the rod head 54 .

[0058] Specifically, the ends of the lever 71 and the pin 72 both have arc-shaped protrusions, which are convenient for resistance sliding and plug-in sliding, respectively, and a torsion spring is provided at the position of the rotating shaft, so that the end of the lever 71 in the default state is closer to the rod head 54 than the end of the pin 72, and the end of the pin 72 maintains a predetermined distance from the inner wall of the sliding sleeve 6 equipped with the lock 7, so that the end of the lever 71 in the default state is farther away from the inner wall of the sliding sleeve 6 (the inner wall of the sliding sleeve 6 used for locking and unlocking positions).

[0059] When the vehicle door is closed normally, the push surface 55 applies pressure to the lever 71 to cause the pin rod 72 to rotate around the rotating shaft, which is used to insert the arc-shaped protrusion on the pin rod 72 into the lock groove 56, thereby locking the insertion rod 5 and making the arc-shaped protrusion abut against one of the inner walls of the lock groove 56. At this time, the elastic member 53 is in a default deformation state, so that when the elastic member 53 is used for energy absorption, the rod head 54 can be in a sliding state of abutment with the lever 71 and the pin rod 72, and the elastic member 53 can be released normally in the subsequent unlocking operation to ensure the plug-in fixing effect, and the elastic member 53 does not fully recover its deformation after release.

[0060] As another embodiment further provided by the present invention, the hinged position of the balance arm 2 is movable at the end of the arm bracket 11, so that the clamp rod 22 slides to the predetermined position of the rod inclined surface 51, and the shift rod 71 is reset to slide from the push surface 55 into the storage groove 57 opened on the rod head 54.

[0061] Specifically, such as Figure 6 When the balance arm 2 shown in the figure becomes loose in its rotation position (i.e., severely worn), the balance arm 2 is subjected to the opposing pressure and deviates due to the looseness, and the force at the rotation position is directed toward the door retraction direction. At the same time, in conjunction with the arc movement of the arm rod 21, the hoop rod 22 actively climbs to the high position of the rod inclined surface 51, thereby extending the effective energy absorption path ( Figure 6 Where a is the unworn path, b is the worn path, and b is greater than a. At the same time, b will increase accordingly with the wear condition).

[0062] Furthermore, the receiving groove 57 is located at a position opposite to the locking groove 56 with the pushing surface 55 as the center.

[0063] After the swing arm and the balance arm 2 are severely worn in their rotation positions, the greater the degree to which the elastic member 53 is compressed by the pressure of the insertion rod 5, the stronger the buffering effect and the better the energy absorption capacity, until the pressure path of the insertion rod 5 resets the lever 71 and the pin 72. At this time, the convex arc surface on the pin 72 slides out of the lock groove 56 and abuts against the push surface 55. By utilizing the spacing at the end of the pin 72 in the default state, the pin 72 is prompted to form an effect of lifting the sliding sleeve 6, causing the sliding sleeve 6 to slide in the direction of door closing (further forward than the rod head 54 moving in the positive direction with the door closing). At this time, the sliding sleeve 6 causes the lock member 7 to lose its lock on the rod head 54, so that the insertion rod 5 is permanently plugged in and fixed, which is used to provide long-term protection for the connecting components, avoid problems such as collapse when the connecting components are seriously damaged, and allow the door to continue to work.

[0064] As another embodiment further provided by the present invention, the lever 71 slides to a predetermined position of the receiving groove 57 to restore the elastic member 53 to its original shape, and the end of the insertion rod 5 is inserted into the inner groove 32 provided on the card slot 31 .

[0065] Specifically, the inner groove 32 is connected to the clamping groove 31 , and the depth of the inner groove 32 is greater than the depth of the clamping groove 31 . The switching position between the two has rounded corners to facilitate sliding switching.

[0066] When the plugging action is performed through the door carrying frame 3, the end of the plug-in rod 5 under the plug-in fixation slides from the card slot 31 into the inner groove 32, the purpose of which is to provide stability under the plug-in fixation effect. When the plug-in rod 5 is not triggered, the end of the plug-in rod 5 at the end of the card slot 31 will enter the card slot 31 to perform the docking function. After that, the plug-in rod 5 is released from the plug-in fixation and is in a trigger-ready state.

[0067] Secondly, the pin rod 72 which plays a pushing role will pull the end of the lever 71 which slides into the storage groove 57 out of the storage groove 57, and the elastic member 53 which is unlocked will prompt the insertion rod 5 to play the function of plugging and fixing. That is, when the car door is closed and there is no friction, but the connecting component is seriously damaged, the insertion rod 5 will also be triggered to ensure the protection effect of the connecting component, so that the car door can continue to be used normally.

[0068] As another embodiment further provided by the present invention, when the door carrying frame 3 moves to the end position, the insertion rod 5 is pulled by the door carrying frame 3 to reversely press the elastic member 53.

[0069] The position of the arm 21 is seriously loose, which causes the position of the door carrier 3 to change (that is, the original path of the car door is seriously offset), corresponding to the offset of the position of the insertion rod 5 inserted into the card slot 31, and finally, under the action of the elastic member 53 fully recovering the deformation, the end of the insertion rod 5 is prompted to actively find a deep position, that is, enter the inner groove 32, so that the inner groove 32 changes from a stabilizing effect to a plug-in fixing effect, thereby ensuring the protection function of the door carrier 3. Then, when the door carrier 3 is plugged, it cannot go deeper, and at this time the insertion rod 5 has been separated from the control of the lock 7. Later, when the car door is plugged, the door carrier 3 will actively press the elastic member 53, and under the deformation of the elastic member 53, the insertion of the car door is blocked, so as to obtain a visual effect of reduced speed when the car door is closed, in order to remind the staff.

[0070] As another embodiment further provided by the present invention, it also includes a buffer rod 9 provided with a spring and pushing-coordinated with the slide cylinder 1 .

[0071] Specifically, the buffer rod 9 is symmetrically installed below the guide rail frame 4, and the spring is annularly arranged outside the buffer rod 9.

[0072] During the door closing process, the slide member 1 actively pushes the end of the buffer rod 9 to compress the spring, which is used to reduce the speed during the door closing process, reduce the psychological and physical interference caused by the door closing too quickly to the passengers near the door, and achieve basic protection effect.

[0073] As another embodiment further provided by the present invention, a reset oblique rod 91 is provided on the buffer rod 9 , and the reset oblique rod 91 is slidably matched with the vertical rod 52 to unlock the lower insertion rod 5 and lock it.

[0074] Specifically, the reset inclined rod 91 has a predetermined angle with the buffer rod 9 on the horizontal plane.

[0075] Before the slide member 1 pushes the buffer rod 9, the rounded corners set on one side line of the vertical rod 52 are used to slide with the reset inclined rod 91, so that the vertical rod 52 is pushed and the elastic member 53 is compressed, and the insertion rod 5 that is not severely worn and is normally triggered is returned to its original position. At this time, the sliding sleeve 6 reaches the end position of the slideway 41, and the locking member 7 locks the returned rod head 54 (the end of the non-worn lower lever 71 is still triggered in cooperation with the pushing surface 55), so that the insertion rod 5 can perform the subsequent mutual protection work, the protection effect is stable, and the number of uses is also more.

[0076] As another embodiment further provided by the present invention, a fastener 8 is provided on the sliding sleeve 6 and arranged opposite to the locking member 7. The fastener 8 is provided with a limit block 81 which is fixed to the rod head 54 in a default state.

[0077] Specifically, the fastener 8 is provided with a shaft rod that rotates in the notch at the bottom of the sleeve 6 (a torsion spring is provided at the rotation position), and the end of the limit block 81 used for the reinforcement is fixedly installed with a connecting slider 82, and a switching block 83 is fixedly installed on the connecting slider 82, and the combination of the connecting slider 82 and the switching block 83 presents a convex shape.

[0078] Further, such as Figure 13 As shown, the connecting slider 82 has an inclined surface in contact with the rod head 54, which is used to increase the fixing area of ​​the limit block 81. The guide rail frame 4 is also provided with a sliding hole 42 for the switching block 83 to slide, and a switching hole 43 is connected between the end of the slide 41 and the end of the sliding hole 42.

[0079] By closing the door, the switching block 83 slides in the sliding hole 42, and when the sleeve 6 reaches the end position of the slide 41, the switching block 83 resets and moves up from the switching hole 43 into the slide 41. At this time, the limit block 81 and the connecting slider 82 enter the interior of the sleeve 6, so that the rod head 54 is fixed in the locking position, and the lower end of the switching block 83 slides against the inner wall of the slide 41, so that during the normal opening of the car door, the insertion rod 5 is prevented from being released and used for plugging and fixing, so as to ensure that the plugging and fixing effect is in a stable triggering state.

[0080] As another embodiment further provided by the present invention, it also includes an elastic pressure strip 85 for pushing the limit block 81 to release the fixation.

[0081] Specifically, the elastic strip 85 made of elastic metal plate is fixedly installed on the top of the vehicle body, and the end of the elastic strip 85 is arc-shaped and faces downward, and the end of the elastic strip 85 is flush with the lower end surface of the sliding sleeve 6.

[0082] Furthermore, a guide protrusion 84 (in the shape of a bird's beak, and using an arc surface to slide and contact the end of the elastic pressure strip 85) is fixedly installed on the rotating shaft of the fastener 8 and is located opposite to the limit block 81, and the height of the end of the guide protrusion 84 in the default state is lower than the height of the end of the elastic pressure strip 85.

[0083] Furthermore, the other side of the guide rail frame 4 has a cut surface or a channel that is the same as the switching hole 43, so as to facilitate the switching block 83 to rotate again and reach the end of the sliding hole 42.

[0084] During the normal opening process of the car door, the end of the elastic pressure strip 85 is inserted into the notch of the sliding sleeve 6, and the end of the elastic pressure strip 85 is slid onto the limit block 81, and the deformation pressure of the elastic pressure strip 85 is used to pressurize and rotate the limit block 81. Then, during the normal closing process of the car door, the switching block 83 enters from the end of the sliding hole 42 (and during the process, the elastic pressure strip 85 maintains pressure on the limit block 81, prompting the switching block 83 to slide off the elastic pressure strip 85 after the successful switching), so that the limit block 81 loses its support on the rod head 54 again, making it convenient for the insertion rod 5 to be in the triggering state, realizing a complete set of coherent actions.

[0085] Working principle: When the door is in conflict with each other, the swing arm and the balance arm 2 are subjected to force at the same time, prompting the arc-shaped motion of the clamp rod 22 to slide the protrusion on it to a higher position. At this time, the insertion rod 5 is subjected to force and uses the elastic member 53 that has been deformed again to absorb energy to reduce the damage caused by the counteracting force to the rotation position of the balance arm 2. Synchronously, the door carrier 3 is buffered, so the swing arm is also buffered, and the door immediately retreats under the action of the sensor. At the same time, the rod head 54 slides in the opposite direction from the sleeve 6, so that the unlocked rod head 54 is immediately inserted into the slot 31 under the action of the elastic member 53 to restore the deformation, realizing the trinity of the arm bracket 11, the insertion rod 5 and the door carrier 3, so that the pressure on the power connection part of the door is offset by the plug-in fixing effect, so that the connection part can be stopped in time when it is under force, greatly reducing the damage to important components.

[0086] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A rail transit door system, comprising a slide member (1) and an arm bracket (11) on which a balancing arm (2) is rotatably mounted, wherein a door carrying frame (3) is fixedly mounted on the balancing arm (2), characterized in that: The arm support (11) is provided with a vertical rod (52), the upper and lower ends of the vertical rod (52) are provided with a rod head (54) and an insertion rod (5), and the lower end of the vertical rod (52) is provided with an elastic member (53) which is coaxial with the insertion rod (5) and is in a deformation and force storage state, wherein: The rod head (54) and the insertion rod (5) are staggered in the horizontal direction; It also includes a sliding sleeve (6) that moves in parallel with the door carrier (3), wherein one inner wall of the sliding sleeve (6) is pushed by the rod head (54), and a locking member (7) is rotated at the pushed position to be pressed by the rod head (54) and used to lock the insertion rod (5); In the locked state, the rod head (54) maintains a predetermined distance from the other inner wall of the sliding sleeve (6); The insertion rod (5) and the slot (31) provided on the door carrier (3) are plug-fitted; The insertion rod (5) is provided with a rod inclined surface (51), and the balancing arm (2) is provided with a hoop rod (22) that is slidably engaged with the rod inclined surface (51), and the elastic member (53) is compressed in the sliding state; The locking element (7) is divided into a rotating shaft and a shifting rod (71) and a pin rod (72) on both sides thereof according to its function, wherein: The end of the shifting rod (71) is pushed by the pushing surface (55) provided on the rod head (54), so that the pin rod (72) is inserted into the locking groove (56) provided on the rod head (54); The balancing arm (2) is hinged at the end of the arm bracket (11), so that the hoop rod (22) slides to a predetermined position on the rod inclined surface (51), and the shifting rod (71) is reset and slides from the push surface (55) into the receiving groove (57) provided on the rod head (54); The shifting rod (71) slides to a predetermined position of the receiving slot (57) to restore the elastic member (53) to its original shape, and the end of the insertion rod (5) is inserted into the inner slot (32) provided on the card slot (31).

2. A rail transit door system according to claim 1, characterized in that: When the door carrying frame (3) moves to the end position, the insertion rod (5) is pulled by the door carrying frame (3) to apply reverse pressure to the elastic member (53).

3. A rail transit door system according to claim 1, characterized in that: It also includes a buffer rod (9) provided with a spring and engaging with the slide cylinder (1) in a push-fit manner.

4. A rail transit door system according to claim 3, characterized in that: The buffer rod (9) is provided with a reset oblique rod (91), and the reset oblique rod (91) is slidably matched with the vertical rod (52) to unlock the lower insertion rod (5) and lock it.

5. A rail transit door system according to claim 3, characterized in that: The sliding sleeve (6) is provided with a fastener (8) arranged opposite to the locking member (7), and the fastener (8) is provided with a limiting block (81) fixed to the rod head (54) in a default state.

6. A rail transit door system according to claim 5, characterized in that: It also includes an elastic pressure strip (85) for pushing the limiting block (81) to release the fixation.

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