Pure electric sliding plug door system for rail transit

Abstract

The invention discloses a pure electric sliding plug door system for rail transit. The pure electric sliding plug door system comprises a sealing door frame, a bearing driving mechanism, a door leaf, a front side synchronizing device, a rear side synchronizing device, an internal emergency unlocking device, an external emergency unlocking device and a pedal. The sealing door frame is connected with the door leaf, the top of the sealing door frame is connected with the bearing driving mechanism, the bottom of the sealing door frame is connected with the pedal, and the side portion of the sealing door frame is connected with the front side synchronizing device, the rear side synchronizing device, the internal emergency unlocking device and the external emergency unlocking device. The device is simple in structure, small in appearance size, low in cost and suitable for high-speed trains operating at the speed grade of 350 km / h or above; a motor with a planetary gear reducer is adopted for driving, the door opening and closing driving function of a door system is achieved, meanwhile, driving force is transmitted to locking devices on the two sides of a door through a synchronous rod, the electric locking function of a door leaf is achieved, and the device is suitable for an air-source-free pure electric door system structure.

Description

Technical Field

[0001] This invention relates to the field of rail transit, and more particularly to a fully electric sliding door system for rail transit. Background Technology

[0002] In existing rail transit door systems, the drive and control system uses an electric control method, while the locking system relies on a pneumatic method, with three independent pneumatic locking devices configured on the side of the door system. Both the drive unit and the locking unit are centrally controlled by a door controller, but their power sources are independent and not directly related.

[0003] The existing structure requires an additional pneumatic system for the vehicle, which not only complicates the overall vehicle structure but also increases operating costs and wastes energy. Furthermore, when this load-bearing drive mechanism is applied to a sliding door system, it requires linear bearings and guide pillars to achieve sliding movement, while relying on a four-bar linkage to ensure the synchronicity of the sliding movements on both sides, resulting in a complex overall structure, large space occupation, and high cost. Additionally, because the driving force cannot be transmitted to the side locking device, this structure is difficult to adapt to purely electric door systems without a pneumatic supply. Summary of the Invention

[0004] Purpose of the invention: To address the shortcomings and defects of existing technologies, this invention provides a pure electric sliding door system for rail transit. It features a simple structure, small size, low cost, and is suitable for high-speed trains operating at speeds of 350 km / h and above. The system employs a motor drive with a planetary gear reducer to achieve the door system's opening and closing function. Simultaneously, a synchronizing rod transmits the driving force to the locking devices on both sides of the door, enabling the electric locking function of the door leaf. This design is suitable for pure electric door systems without a pneumatic power source.

[0005] Technical solution: The present invention provides a pure electric sliding door system for rail transit, characterized in that it includes a sealed door frame, a load-bearing drive mechanism, a door leaf, a front synchronization device, a rear synchronization device, an internal emergency unlocking device, an external emergency unlocking device, and a pedal; the sealed door frame is connected to the door leaf, the top of the sealed door frame is connected to the load-bearing drive mechanism, the bottom of the sealed door frame is connected to the pedal, and the side of the sealed door frame is connected to the front synchronization device, the rear synchronization device, the internal emergency unlocking device, and the external emergency unlocking device.

[0006] The sealed door frame and the load-bearing drive mechanism are bolted to the rail transit vehicle body. The load-bearing drive mechanism is connected to the door control component by bolts. The door control component is the overall control device of the door system.

[0007] The door leaf is connected to the linear guide rail of the load-bearing drive mechanism by bolts. When the door leaf is closed and locked, the sealing door frame and the door leaf together achieve the sealing function of the door system.

[0008] The front and rear synchronization devices are connected to the rail transit vehicle body by bolts. Synchronization rods are installed on the front and rear synchronization devices, and the synchronization rods are connected to the load-bearing drive mechanism to transmit the drive torque of the drive motor.

[0009] The front synchronization device is equipped with two side locks and one lower lock via a synchronization rod. The side locks and lower lock are locked to the door leaf by locking pins installed on the door leaf. The rear synchronization device is equipped with two side locks and one swing arm lock via a synchronization rod. The side locks and swing arm lock are locked to the door leaf by locking pins installed on the door leaf and a sliding track. The swing arm lock provides guidance for the door leaf during its opening and closing movement.

[0010] The pedal is bolted to the rail transit vehicle body to compensate for the gap between the door system and the platform. The internal and external emergency unlocking devices are bolted to the rail transit vehicle body and connected to the transmission rod located on the load-bearing drive mechanism via steel wire ropes. In case of emergency, pulling the internal or external emergency unlocking device unlocks the electric lock connected to the transmission rod and then the door can be opened or closed manually.

[0011] The load-bearing drive mechanism includes a left bracket, a right bracket, a mounting bracket, a drive motor, a lead screw, a nut assembly, a slide rail, a transmission rod, a linear guide rail, a rotating arm, a mechanism lock, and a door control assembly.

[0012] The left bracket, right bracket, drive motor, slide rail, and door control assembly are bolted to the mounting bracket. These components bear the weight of the door leaf, provide the door system with degrees of freedom of movement, and minimize the resistance of the door leaf movement.

[0013] The door control component is the control part of the door system. Under the signal control of the door control component, the drive motor drives the nut assembly to move through the lead screw. The nut assembly is directly or indirectly connected to the linear guide rail through bolts, thereby driving the door to open and close. The rollers directly or indirectly installed on the nut assembly slide in the slide rail, providing upper guidance for the door movement. The other output port of the drive motor is connected to the transmission rod. When the door is closed, the drive motor drives the transmission rod to rotate.

[0014] The transmission rod is connected to the mechanism lock at both ends via shafts and holes. The rotation of the transmission rod drives the mechanism lock to the locked position. At the same time, rotating arms are installed at both ends of the transmission rod. The rotating arms are connected to the synchronizing rods in the front and rear synchronizing devices via shafts, which can transmit the driving torque of the drive motor to the front and rear synchronizing devices.

[0015] Beneficial Effects: Compared with existing technologies, this invention has the following significant advantages: The invention features a simple structure, small size, low cost, and is suitable for high-speed trains operating at speeds above 350 km / h; it is an electrically controlled single-opening sliding door, employing a modular design, resulting in a simple structure, high reliability, and ease of maintenance. This invention uses a motor drive with a planetary gear reducer to achieve the door system's opening and closing drive function, while simultaneously transmitting the driving force to the locking devices on both sides of the door via a synchronizing rod, thus realizing the electric locking function of the door leaf; it is suitable for pure electric door systems without a pneumatic power source; and it solves the problems of existing load-bearing drive mechanisms being complex, space-consuming, costly, and unable to adapt to pure electric door systems without a pneumatic power source. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the load-bearing drive mechanism of the present invention;

[0018] Figure 3 This is a schematic diagram of the front synchronization device of the present invention;

[0019] Figure 4 This is a schematic diagram of the rear synchronization device of the present invention;

[0020] In the diagram, 1 is the sealed door frame; 2 is the load-bearing drive mechanism; 3 is the door leaf; 4 is the front synchronization device; 5 is the rear synchronization device; 6 is the internal emergency unlocking device; 7 is the external emergency unlocking device; 8 is the pedal; 91 is the left bracket; 92 is the right bracket; 10 is the mounting bracket; 11 is the drive motor; 12 is the lead screw; 13 is the nut assembly; 14 is the slide rail; 15 is the transmission rod; 16 is the linear guide rail; 17 is the swing arm; 18 is the mechanism lock; 19 is the door control assembly; 20 is the synchronization rod; 21 is the side lock; 22 is the lower lock; 23 is the swing arm lock; 24 is the locking pin; and 25 is the lower slide rail. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] The present invention provides a pure electric sliding door system for rail transit, comprising a sealed door frame 1, a load-bearing drive mechanism 2, a door leaf 3, a front synchronization device 4, a rear synchronization device 5, an internal emergency unlocking device 6, an external emergency unlocking device 7, and a foot pedal 8; the sealed door frame 1 is connected to the door leaf 3, the top of the sealed door frame 1 is connected to the load-bearing drive mechanism 2, the bottom of the sealed door frame 1 is connected to the foot pedal 8, and the side of the sealed door frame 1 is connected to the front synchronization device 4, the rear synchronization device 5, the internal emergency unlocking device 6, and the external emergency unlocking device 7.

[0023] The sealing door frame 1 and the load-bearing drive mechanism 2 of this invention are bolted to the rail transit vehicle body. The load-bearing drive mechanism 2 is bolted to the door control assembly 19, which is the overall control device for the door system. The door leaf 3 is bolted to the linear guide rail 16 of the load-bearing drive mechanism 2. When the door leaf 3 is closed and locked, the sealing door frame 1 and the door leaf 3 together achieve the sealing function of the door system. The front synchronization device 4 and the rear synchronization device 5 are bolted to the rail transit vehicle body. Synchronization rods 20 are installed on the front synchronization device 4 and the rear synchronization device 5. The synchronization rods 20 are connected to the load-bearing drive mechanism 2 and transmit the driving torque of the drive motor 11. The front synchronization device 4 is equipped with two side locks 21 and one lower lock 22 via a synchronization rod 20. The side locks 21 and lower lock 22 lock the door leaf 3 via locking pins 24 mounted on the door leaf 3. The rear synchronization device 5 is equipped with two side locks 21 and one swing arm lock 23 via a synchronization rod 20. The side locks 21 and swing arm lock 23 lock the door leaf 3 via locking pins 24 mounted on the door leaf 3 and a sliding track 25. The swing arm lock 23 provides guidance for the door leaf 3 during its opening and closing movement. The pedal 8 is bolted to the rail transit vehicle body to compensate for the gap between the door system and the platform. The internal emergency unlocking device 6 and the external emergency unlocking device 7 are bolted to the rail transit vehicle body and connected to the transmission rod 15 located on the load-bearing drive mechanism 2 via steel wire ropes. In case of emergency, pulling the internal emergency unlocking device 6 or the external emergency unlocking device 7 unlocks the electric lock connected to the transmission rod 15, allowing for manual opening and closing of the door.

[0024] The load-bearing drive mechanism 2 of the present invention includes a left bracket 91, a right bracket 92, a mounting bracket 10, a drive motor 11, a lead screw 12, a nut assembly 13, a slide rail 14, a transmission rod 15, a linear guide rail 16, a rotating arm 17, a mechanism lock 18, and a door control assembly 19. The left bracket 91, right bracket 92, drive motor 11, slide rail 14, and door control assembly 19 are bolted to the mounting bracket 10. These components bear the weight of the door leaf 3, while providing the door system with degrees of freedom of movement and minimizing the movement resistance of the door leaf 3. The door control assembly 19 is the control component of the door system. Under the signal control of the door control assembly 19, the drive motor 11 drives the nut assembly 13 to move through the lead screw 12. The nut assembly 13 is directly or indirectly connected to the linear guide rail 16 through bolts, thereby driving the door leaf 3 to open and close. The rollers directly or indirectly installed on the nut assembly 13 slide in the slide rail 14, providing upper guidance for the movement of the door leaf 3. Another output port of the drive motor 11 is connected to the transmission rod 15. When the door leaf 3 is closed, the drive motor 11 drives the transmission rod 15 to rotate. The two ends of the transmission rod 15 are connected to the mechanism lock 18 through shafts and holes. The rotation of the transmission rod 15 drives the mechanism lock 18 to the locked position. At the same time, the two ends of the transmission rod 15 are equipped with rotating arms 17. The rotating arms 17 are connected to the synchronizing rods 20 in the front synchronization device 4 and the rear synchronization device 5 through shafts, which can transmit the driving torque of the drive motor 11 to the front synchronization device 4 and the rear synchronization device 5.

[0025] In this invention, both the front synchronization device 4 and the rear synchronization device 5 are equipped with a synchronization rod 20, which can transmit the driving torque of the drive motor 11 in the drive mechanism 2. The synchronization rod 20 can drive the side lock 21, the lower lock 22 and the swing arm lock 23 to enter the locking state synchronously.

[0026] The sealing door frame of this invention is connected to the vehicle body. After the door is closed and locked, the sealing door frame and the door together provide a sealing effect. The load-bearing drive mechanism is the load-bearing and motion control system of the entire door system. It is driven by a motor with a planetary gear reducer and a lead screw and nut pair. It is connected to the door through a guide rail or mounting bracket. The guide rail or mounting bracket and the upper slide rail form the upper guide device of the door, which together with the swing arm assembly located on the rear synchronization device forms the motion guide system of the door. The drive motor transmits the driving force to the mechanism locks installed on both sides of the load-bearing drive mechanism through the drive shaft, providing two active locking points for the door system. At the same time, the drive shaft is connected to the front and rear synchronization devices through the rotating arm, providing direct driving force to the side locking devices without the need for an additional air or power source for the side locking devices. When the door is closed, the mechanism locks on both sides perform the locking function. At the same time, through the rotating arm or cam structure, the driving torque of the motor is transmitted to the synchronizing rod in the front and rear synchronization devices. The synchronizing rod drives the front and rear locking devices to move, working together with the load-bearing drive mechanism to move the door to the locked and sealed pressing position.

[0027] The sliding door locking system of this invention consists of mechanical locks located on both sides of the load-bearing drive mechanism and side locks located in the front and rear synchronization devices. The mechanical locks and the swing arm locks in the rear synchronization device are active locking devices, possessing the active force to lock the door leaf and press it to an airtight position. Additionally, three or five auxiliary locking devices are provided in the front and rear synchronization devices to provide sufficient restraint points for the door leaf under high-speed operating conditions. The number of auxiliary locks depends on the door system opening degree and the load it bears. The door is equipped with internal and external emergency operation devices, connected to the locking device via steel cables, for unlocking the door in an emergency.

[0028] This invention provides a sliding door system for rail vehicles. The system features a modular design, simple structure, high reliability, and ease of maintenance. It has an active locking function, providing direct, active locking power to the door leaf, making it suitable for the airtightness requirements of high-speed operating environments such as intercity and high-speed rail. The system is purely electric-driven, eliminating the need for an additional air supply unit within the vehicle body, thus saving energy and costs for the entire vehicle.

Claims

1. A fully electric sliding door system for rail transit, characterized in that: It includes a sealed door frame (1), a load-bearing drive mechanism (2), a door leaf (3), a front synchronization device (4), a rear synchronization device (5), an internal emergency unlocking device (6), an external emergency unlocking device (7), and a pedal (8); the sealed door frame (1) is connected to the door leaf (3), the top of the sealed door frame (1) is connected to the load-bearing drive mechanism (2), the bottom of the sealed door frame (1) is connected to the pedal (8), and the side of the sealed door frame (1) is connected to the front synchronization device (4), the rear synchronization device (5), the internal emergency unlocking device (6), and the external emergency unlocking device (7).

2. The pure electric sliding door system for rail transit according to claim 1, characterized in that: The sealed door frame (1) and the load-bearing drive mechanism (2) are installed on the rail transit vehicle body by bolts. The load-bearing drive mechanism (2) is connected to the door control assembly (19) by bolts. The door control assembly (19) is the overall control device of the door system.

3. The pure electric sliding door system for rail transit according to claim 2, characterized in that: The door leaf (3) is connected to the linear guide rail (16) of the load-bearing drive mechanism (2) by bolts. When the door leaf (3) is closed and locked, the sealing door frame (1) and the door leaf (3) together achieve the sealing function of the door system.

4. The pure electric sliding door system for rail transit according to claim 3, characterized in that: The front synchronization device (4) and the rear synchronization device (5) are connected to the rail transit vehicle body by bolts. Synchronization rods (20) are installed on the front synchronization device (4) and the rear synchronization device (5). The synchronization rods (20) are connected to the load-bearing drive mechanism (2) to transmit the drive torque of the drive motor (11).

5. The pure electric sliding door system for rail transit according to claim 4, characterized in that: The front synchronization device (4) is equipped with two side locks (21) and one lower lock (22) via a synchronization rod (20). The side locks (21) and the lower lock (22) lock the door leaf (3) via a locking pin (24) installed on the door leaf (3). The rear synchronization device (5) is equipped with two side locks (21) and one swing arm lock (23) via a synchronization rod (20). The side locks (21) and the swing arm lock (23) lock the door leaf (3) via a locking pin (24) installed on the door leaf (3) and a sliding track (25). The swing arm lock (23) provides guidance for the door leaf (3) during the opening and closing movement of the door leaf (3).

6. The pure electric sliding door system for rail transit according to claim 5, characterized in that: The pedal (8) is bolted to the rail transit vehicle body to compensate for the gap between the door system and the platform; the internal emergency unlocking device (6) and the external emergency unlocking device (7) are bolted to the rail transit vehicle body and connected to the transmission rod (15) located on the load-bearing drive mechanism (2) by steel wire rope; in case of emergency, pull the internal emergency unlocking device (6) or the external emergency unlocking device (7) to unlock the electric lock connected to the transmission rod (15) and then manually open and close the door.

7. The pure electric sliding door system for rail transit according to claim 1, characterized in that: The load-bearing drive mechanism (2) includes a left bracket (91), a right bracket (92), a mounting bracket (10), a drive motor (11), a lead screw (12), a nut assembly (13), a slide rail (14), a transmission rod (15), a linear guide rail (16), a rotating arm (17), a mechanism lock (18), and a door control assembly (19).

8. The pure electric sliding door system for rail transit according to claim 7, characterized in that: The left bracket (91), right bracket (92), drive motor (11), slide rail (14), and door control assembly (19) are mounted on the mounting bracket (10) by bolts. The above components bear the weight of the door leaf (3), while providing the door system with degrees of freedom of movement and minimizing the movement resistance of the door leaf (3).

9. The pure electric sliding door system for rail transit according to claim 8, characterized in that: The door control component (19) is the control component of the door system. Under the signal control of the door control component (19), the drive motor (11) drives the nut assembly (13) to move through the lead screw (12). The nut assembly (13) is directly or indirectly connected to the linear guide rail (16) through bolts, thereby driving the door leaf (3) to open and close. The rollers directly or indirectly installed on the nut assembly (13) slide in the slide rail (14) to provide upper guidance for the movement of the door leaf (3). The other output port of the drive motor (11) is connected to the transmission rod (15). When the door leaf (3) is closed, the drive motor (11) drives the transmission rod (15) to rotate.

10. The pure electric sliding door system for rail transit according to claim 9, characterized in that: The transmission rod (15) is connected to the mechanism lock (18) at both ends through shafts and holes. The rotation of the transmission rod (15) drives the mechanism lock (18) to the locked position. At the same time, rotating arms (17) are installed at both ends of the transmission rod (15). The rotating arms (17) are connected to the synchronizing rods (20) in the front synchronizing device (4) and the rear synchronizing device (5) through shafts. The driving torque of the drive motor (11) can be transmitted to the front synchronizing device (4) and the rear synchronizing device (5).

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