Rail transit door bearing driving mechanism with locking function

Abstract

The invention discloses a rail transit door bearing driving mechanism with a locking function, which comprises a left bracket, a right bracket, an electric control system, a slide way and a driving motor which are arranged on a rack, bearing bracket assemblies on the side parts of the left bracket and the right bracket are connected with a linear guide rail, and bearing wheels are arranged on the bearing bracket assemblies; the bearing wheels can move in the bearing grooves in the left support and the right support to bear the weight of the door leaf. The bearing support assembly is provided with a bearing support, a bearing wheel, a guide wheel and a guide groove. The side locking device is simple in structure, small in appearance size and low in cost, has bearing and driving functions, provides two active locking points for a door system, provides direct driving force for the side locking device, and does not need to provide an additional air source or power source for the side locking device.

Description

Technical Field

[0001] The present invention relates to a rail transit door, and particularly to a load-bearing driving mechanism of a rail transit door with a locking function. Background Art

[0002] In the existing EMU door system, the drive control system adopts an electric and electronic control method, and the locking system adopts a pneumatic method. The load-bearing driving mechanism has no direct power source connection with the side locking system. It is necessary for the vehicle to lay a pneumatic circuit system for the door system, which makes the vehicle structure complex, increases the cost of the railway line, and wastes energy. When the load-bearing driving mechanism of such a door system is applied to a single-leaf sliding plug door system, it is necessary to realize the plugging movement direction through the structure of a linear bearing cooperating with a guide post, and use a synchronous balancing device to realize the synchronism of the plugging movement on both sides, resulting in its complex structure, large occupied space, and high cost. Moreover, there is no driving force transmitted to the side locking device, and it cannot adapt to the structure of a pure electric door system without a gas source.

[0003] Therefore, it is necessary to specifically develop a new type of load-bearing driving mechanism for rail transit doors to overcome the above problems. Summary of the Invention

[0004] Object of the Invention: Aiming at the deficiencies and defects of the prior art, the present invention provides a load-bearing driving mechanism of a rail transit door with a locking function, which has a simple structure, small external dimensions, and low cost, has a load-bearing and driving function, provides two active locking points for the door system, provides a direct driving force for the side locking device, and does not require an additional gas source or power source for the side locking device.

[0005] Technical Solution: The load-bearing driving mechanism of a rail transit door with a locking function according to the present invention is characterized in that: it includes a left bracket, a right bracket, an electric control system, a slideway and a driving motor installed on a frame. The load-bearing bracket assemblies on the sides of the left bracket and the right bracket are connected to a linear guide rail. A load-bearing wheel is provided on the load-bearing bracket assembly, and the load-bearing wheel can move in the load-bearing grooves on the left bracket and the right bracket to bear the weight of the door leaf; a load-bearing bracket, a load-bearing wheel, a guide wheel and a guide groove are provided on the load-bearing bracket assembly.

[0006] Wherein, the electric control system and the driving motor have 2 output ends, which are respectively connected to a transmission shaft and a lead screw; under the signal control of the electric control system, the driving motor drives the lead screw to rotate, and a nut pair assembly cooperates with the lead screw.

[0007] Wherein, the nut pair assembly cooperates with the slideway, the nut pair assembly is installed on the linear guide rail through bolts, and the linear guide rail is connected to the door leaf through bolts, so as to drive the door leaf to move along the slideway to provide a track under the signal control of the electric control system.

[0008] Among them, the transmission shaft is connected to the driving motor. Under the signal control of the electronic control system, the driving motor drives the transmission shaft to rotate. A gear is installed on the transmission shaft, and the gear is used in cooperation with the rack to transmit the torque of the driving motor to the rack.

[0009] Among them, the number of the racks is 2. The racks are respectively installed on the left bracket and the right bracket. The racks are connected to the third pendulum wheel of the pendulum wheel assembly, and drive the pendulum wheel assembly to move in the locking grooves on the left bracket and the right bracket; the left bracket and the right bracket are provided with locking grooves and bearing grooves, and the pendulum wheel assembly includes a first pendulum wheel, a second pendulum wheel and a third pendulum wheel.

[0010] Among them, the pendulum wheel assembly is connected to the guiding groove on the bearing bracket assembly, that is, the pendulum wheel assembly drives the bearing bracket assembly to move through the guiding groove, so as to realize the plug and pull movement of the rail transit door system.

[0011] Among them, the pendulum wheel assembly moves along the locking groove. When the first pendulum wheel moves to the locking position of the locking groove, the second pendulum wheel flips along the locking groove to fit the lower edge surface of the locking groove until it reaches the fully locked position. The pendulum wheel assembly drives the door leaf to the fully locked position through the guiding groove.

[0012] Among them, when an opening force is applied to the door leaf, that is, a force is applied to the bearing bracket assembly. Due to the restriction of the locking groove on the pendulum wheel assembly, the pendulum wheel assembly cannot be flipped and unlocked along the third pendulum wheel, that is, locking is realized.

[0013] Among them, the guiding groove includes a first guiding groove and a second guiding groove.

[0014] Among them, the driving force of the driving motor is transmitted to the swing arm. The swing arm is connected to the sector gear through a shaft, and the swing arm is connected to the side locking device, that is, the driving force of the driving motor is directly transmitted to the side lock.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following remarkable advantages: The present invention adopts a modular design, with a compact structure. While realizing the traditional bearing and driving functions, it has an active locking function, and can directly transmit the driving force of the motor to the side locking device. The present invention has a simple structure, small external dimensions, and low cost, has bearing and driving functions, provides two active locking points for the door system, provides direct driving force for the side locking device, and does not require an additional air source or power source for the side locking device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a structural schematic diagram of the present invention Figure 2 ;

[0018] Figure 3Schematic structural diagram of the load-bearing bracket assembly of the present invention;

[0019] Figure 4 Schematic side view of the load-bearing drive mechanism of the present invention when the door is locked;

[0020] Figure 5 Schematic side view of the load-bearing drive mechanism of the present invention when the door is opened;

[0021] Figure 6 Schematic structural diagram of the locked state of the present invention;

[0022] Figure 7 Schematic structural diagram of the opened state of the present invention;

[0023] In the figure, 1 is the left bracket; 2 is the right bracket; 3 is the frame; 4 is the linear guide rail; 5 is the electric control system; 6 is the load-bearing bracket assembly; 7 is the swing arm; 8 is the pendulum wheel assembly; 81 is the first pendulum wheel; 82 is the second pendulum wheel; 83 is the third pendulum wheel; 9 is the rack; 10 is the transmission shaft; 11 is the gear; 12 is the sector gear; 13 is the slideway; 14 is the lead screw; 15 is the nut pair assembly; 16 is the drive motor; 17 is the load-bearing bracket; 18 is the load-bearing wheel; 19 is the guide wheel; 20 is the locking groove; 21 is the load-bearing groove; 22 is the guide groove; 221 is the first guide groove; 222 is the second guide groove. Detailed implementation manners

[0024] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0025] As Figure 1 、 Figure 2 、 Figure 3 The load-bearing drive mechanism of the rail transit door with a locking function of the present invention includes a left bracket 1, a right bracket 2, an electric control system 5, a slideway 13 and a drive motor 16 which are installed on the frame 3 by bolts. The load-bearing bracket assembly 6 on the sides of the left bracket 1 and the right bracket 2 is connected to the linear guide rail 4. The load-bearing bracket assembly 6 is provided with a load-bearing wheel 18, and the load-bearing wheel 18 can move in the load-bearing groove 21 on the left bracket 1 and the right bracket 2 to bear the weight of the door leaf. The load-bearing bracket assembly 6 is provided with a load-bearing bracket 17, a load-bearing wheel 18, a guide wheel 19 and a guide groove 22. The load-bearing drive mechanism of the present invention is composed of a left bracket 1, a right bracket 2, a frame 3, a linear guide rail 4, load-bearing bracket assemblies 6 (on both sides), a transmission shaft 10, etc., forming a parallelogram four-bar linkage structure to achieve the synchronization of the movements on both sides.

[0026] The electric control system 5 of the present invention is a control component of the door system, and the drive motor 16 is a drive component of the door system. The electric control system 5 and the drive motor 16 have two output ends, which are respectively connected to the transmission shaft 10 and the lead screw 14. Under the signal control of the electric control system 5, the drive motor 16 drives the lead screw 14 to rotate, and the nut pair assembly 15 cooperates with the lead screw 14. The nut pair assembly 15 cooperates with the slideway 13, and the nut pair assembly 15 is installed on the linear guide 4 through bolts. The linear guide 4 is connected to the door leaf through bolts, realizing that under the signal control of the electric control system 5, the door leaf is driven to move along the track provided by the slideway 13, achieving the driving and transmission functions of the load-bearing drive mechanism.

[0027] Such as Figure 4 , Figure 5 , Figure 6 , Figure 7 , the transmission shaft 10 of the present invention is connected to the drive motor 16. Under the signal control of the electric control system 5, the drive motor 16 drives the transmission shaft 10 to rotate. A gear 11 is installed on the transmission shaft 10, and the gear 11 is used in cooperation with the rack 9 to transmit the torque of the drive motor 16 to the rack 9. The number of the racks 9 is 2, and the racks 9 are respectively installed on the left bracket 1 and the right bracket 2. The rack 9 is connected to the third pendulum 83 of the pendulum assembly 8, driving the pendulum assembly 8 to move in the locking groove 20 on the left bracket 1 and the right bracket 2. The left bracket 1 and the right bracket 2 are provided with a locking groove 20 and a bearing groove 21. The pendulum assembly 8 includes a first pendulum 81, a second pendulum 82 and a third pendulum 83.

[0028] The pendulum assembly 8 of the present invention is connected to the guide groove 22 on the bearing bracket assembly 6, that is, the pendulum assembly 8 drives the bearing bracket assembly 6 to move through the guide groove 22, realizing the plug and pull movement of the rail transit door system. The pendulum assembly 8 moves along the locking groove 20. When the first pendulum 81 moves to the locking position of the locking groove 20, the second pendulum 82 flips along the locking groove 20 to fit the lower edge surface of the locking groove 20 until it reaches the locked position. The pendulum assembly 8 drives the door leaf to the locked position through the guide groove 22. Applying an opening force to the door leaf, that is, applying a force to the bearing bracket assembly 6. Due to the restriction of the locking groove 20 on the pendulum assembly 8, the pendulum assembly 8 cannot be flipped and unlocked along the third pendulum 83, that is, locking is achieved. The guide groove 22 includes a first guide groove 221 and a second guide groove 222. The driving force of the drive motor 16 is transmitted to the swing arm 7, and the swing arm 7 is connected to the sector gear 12 through a shaft. The swing arm 7 is connected to the side locking device, that is, the driving force of the drive motor 16 is directly transmitted to the side lock. This structure can provide sufficient driving force for the plug and pull movement and sealing compression (side locking device) of the door leaf.

[0029] The load driving mechanism of the present invention adopts an X-Y movement mode. The X direction realizes the plug-in movement of the door system, and the Y direction realizes the opening and closing movement of the door system. The load driving mechanism is composed of a frame, left and right brackets, a driving motor, linear guides, gears, racks, load-bearing bracket assemblies (on both sides), a lead screw and a nut pair assembly, a slideway, a transmission shaft, a swing arm and other components. Among them, the left and right brackets, the driving motor, the upper slideway, etc. are all installed on the frame. The load-bearing bracket assemblies on both sides are installed on the left and right brackets through the load-bearing wheels and guide wheels installed on them, and are connected to the linear guides, bearing the entire weight of the door leaf, providing the freedom of movement of the door system and minimizing the movement resistance of the door leaf; one output shaft of the driving motor is connected to the lead screw, and the lead screw and the nut pair assembly move in cooperation. The nut pair assembly is connected to the linear guide through bolts, that is, it drives the door leaf to move along the trajectory specified by the slideway, realizing the opening and closing movement of the door system in the Y direction. Another output port of the driving motor is connected to the transmission shaft, and the motor torque is transmitted to the swing wheel assembly through the gear and rack. The swing wheel assembly drives the load-bearing bracket assembly (linear guide - door leaf) to move to the locking groove on the left and right brackets through the guide groove on the load-bearing bracket, realizing the locking function of the load driving mechanism. At the same time, the transmission shaft transmits the torque of the driving motor to the swing arm through the gear and the sector gear. The swing arm can transmit the driving force of the motor to the side locking device. This structure can provide sufficient active driving force for the plug-in movement and sealing and pressing (side locking device) of the door leaf.

[0030] The present invention adopts a motor drive with a planetary gear reducer and a lead screw-nut pair drive. The pendulum plug is realized through the fixed sliding grooves on both sides (on the left and right brackets in the following text) and the upper guide rail. Specifically, it is the movement of the load-bearing wheels installed on the load-bearing bracket assemblies on both sides on the notch of the fixed left and right brackets on both sides of the mechanism. The linear guide and the load-bearing bracket assemblies on both sides jointly realize the load-bearing function of the mechanism, replacing the existing mechanism of the linear bearing and the guide column of the door carrier. Swing wheel type locking devices are installed on both sides of the mechanism, which are connected to the locking output shaft of the motor through a gear and rack structure. At the same time, the side load-bearing bracket assembly is connected to the door leaf. While realizing the lateral plug-in movement of the door system, it provides a vertical pulling force for the door leaf, realizing the airtight pulling function of the mechanism on the door leaf. At the same time, the locking output shaft of the motor transmits the driving force to the side lock through the side swing rod, adapting to the structure of a pure electric door system without a gas source. It solves the problems of the existing load driving mechanism, such as complex structure, large space occupation, high cost, and inability to adapt to the structure of a pure electric door system without a gas source.

Claims

1. A load-bearing drive mechanism for a rail transit door with a locking function, characterized in that: It includes a left bracket (1), a right bracket (2), an electric control system (5), a slideway (13) and a driving motor (16) installed on a rack (3). The bearing bracket assembly (6) on the sides of the left bracket (1) and the right bracket (2) is connected to a linear guide (4). A bearing wheel (18) is provided on the bearing bracket assembly (6), and the bearing wheel (18) can move within the bearing grooves (21) on the left bracket (1) and the right bracket (2) to bear the weight of the door leaf. The bearing bracket assembly (6) is provided with a bearing bracket (17), a bearing wheel (18), a guide wheel (19) and a guide groove (22).

2. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 1, characterized in that: The electric control system (5) and the driving motor (16) have two output ends, which are respectively connected to a transmission shaft (10) and a lead screw (14). Under the signal control of the electric control system (5), the driving motor (16) drives the lead screw (14) to rotate, and a nut pair assembly (15) cooperates with the lead screw (14).

3. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 2, characterized in that: The nut pair assembly (15) cooperates with the slideway (13). The nut pair assembly (15) is installed on the linear guide (4) through bolts, and the linear guide (4) is connected to the door leaf through bolts, so as to drive the door leaf to move along the trajectory provided by the slideway (13) under the signal control of the electric control system (5).

4. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 2, characterized in that: The transmission shaft (10) is connected to the driving motor (16). Under the signal control of the electric control system (5), the driving motor (16) drives the transmission shaft (10) to rotate. A gear (11) is installed on the transmission shaft (10), and the gear (11) is used in cooperation with a rack (9) to transmit the torque of the driving motor (16) to the rack (9).

5. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 4, characterized in that: The number of the racks (9) is 2. The racks (9) are respectively installed on the left bracket (1) and the right bracket (2). The racks (9) are connected to the third pendulum wheel (83) of the pendulum wheel assembly (8), and drive the pendulum wheel assembly (8) to move within the locking grooves (20) on the left bracket (1) and the right bracket (2). The left bracket (1) and the right bracket (2) are provided with locking grooves (20) and bearing grooves (21). The pendulum wheel assembly (8) includes a first pendulum wheel (81), a second pendulum wheel (82) and a third pendulum wheel (83).

6. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 5, characterized in that: The pendulum wheel assembly (8) is connected to the guide groove (22) on the bearing bracket assembly (6), that is, the pendulum wheel assembly (8) drives the bearing bracket assembly (6) to move through the guide groove (22) to realize the plug and pull movement of the rail transit door system.

7. The load-bearing driving mechanism of the rail transit door with a locking function according to claim 6, characterized in that: The pendulum wheel assembly (8) moves along the locking groove (20). When the first pendulum wheel (81) moves to the locking position of the locking groove (20), the second pendulum wheel (82) flips along the locking groove (20) to fit the lower edge surface of the locking groove (20) to the locking in place position, and the pendulum wheel assembly (8) drives the door leaf to the locking in place position through the guide groove (22).

8. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 7, characterized in that: Apply an opening force to the door leaf, that is, apply a force to the bearing bracket assembly (6). Due to the limitation of the locking groove (20) on the pendulum wheel assembly (8), it is impossible to make the pendulum wheel assembly (8) flip and unlock along the third pendulum wheel (83), that is, the locking is realized.

9. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 7, characterized in that: The guide groove (22) includes a first guide groove (221) and a second guide groove (222).

10. The load-bearing drive mechanism of the rail transit door with a locking function according to claim 4, characterized in that: The driving force of the driving motor (16) is transmitted to the swing arm (7). The swing arm (7) is connected to the sector gear (12) through a shaft, and the swing arm (7) is connected to the side locking device, that is, the driving force of the driving motor (16) is directly transmitted to the side lock.

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