Rail transit door bearing driving mechanism and locking device

Abstract

The invention discloses a rail transit door bearing driving mechanism and a locking device. The rail transit door bearing driving mechanism comprises a left support, a right support, a bearing beam assembly, an electric control system, a driving motor and a sliding way which are installed on a rack. The bearing beam assembly moves in the bearing grooves in the left support and the right support through bearing wheels installed on the bearing beam assembly, and movement in the plug-pull direction is achieved. A linear guide rail in the bearing beam assembly is connected with the door leaf to bear the weight of the door leaf. The side locking device has the advantages of being 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 extra air source or power source for the side locking device.

Description

TECHNICAL FIELD

[0001] The present application relates to a rail transit door system, in particular to a rail transit door bearing driving mechanism and locking device. BACKGROUND

[0002] In the existing rail transit door system, the drive control system adopts an electric control mode, the locking system adopts a pneumatic mode, and three pneumatic locking devices are arranged on the side of the door system. The driving and locking are controlled by a door controller, and the two are not directly associated with the power source. This structure requires the vehicle to lay a gas line system for the door system, which complicates the structure of the vehicle and increases the operation cost, causing energy waste. When this door system bearing driving mechanism is applied to a plug door system, it needs to realize the plug direction movement through the structure of the linear bearing cooperating with the guide column, and realize the synchronization of the two side plug movements by using a four-bar linkage device, which leads to a complex structure, large space occupation and high cost. Moreover, no driving force is transmitted to the side locking device, which cannot adapt to the structure of the pure electric door system without gas source.

[0003] Therefore, it is necessary to develop a new rail transit door bearing driving mechanism and locking device to overcome the above problems. SUMMARY

[0004] The present application provides a rail transit door bearing driving mechanism and locking device, which has the characteristics of simple structure, small size and low cost, has bearing and driving functions, provides two active locking points for the door system, and provides direct driving force for the side locking device, without the need to provide additional gas source or power source for the side locking device.

[0005] Technical scheme: The rail transit door bearing driving mechanism and locking device of the present application is characterized in that it comprises a left support, a right support, a bearing beam assembly, an electric control system, a driving motor and a slide way mounted on a rack; the bearing beam assembly moves in the bearing groove on the left support and the right support through the bearing wheels mounted thereon, i.e. realizes the plug direction movement; the linear guide rail inside the bearing beam assembly is connected with the door leaf, and bears the weight of the door leaf.

[0006] Among them, the electric control system serves as the control component of the door system, the driving motor serves as the driving component of the door system, and the two output ends of the driving motor are connected with the transmission shaft and the screw rod respectively; under the signal control of the electric control system, the driving motor drives the screw rod to rotate, and the nut pair assembly cooperates with the screw rod.

[0007] The nut subassembly is connected with the roller mounting seat assembly, the roller of the roller mounting seat assembly moves in the slide, the roller mounting seat assembly is installed on the linear guide rail, the linear guide rail is connected with the door leaf, and the door leaf is driven to move along the track provided by the slide under the signal control of the electric control system, the driving and transmission functions of the bearing driving mechanism are realized, and the door opening and closing action is realized.

[0008] The bearing beam assembly is provided with a bearing support, a bearing wheel, a shift fork, a linear guide rail, a locking pin and a roller mounting seat assembly.

[0009] The left support and the right support are provided with bearing grooves and locking grooves, the bearing support is provided with a shift fork and a locking pin, the shift fork is provided with a shift fork roller, and the locking pin is provided with a locking pin roller one and a locking pin roller two through shafts at both ends.

[0010] The linear guide rail is provided with bearing supports on both sides, the bearing supports are provided with locking pins, the locking pins can rotate on the bearing supports in the axial direction, the bearing supports are provided with shift forks, and the shift forks drive the locking pins to rotate by driving the locking pin roller one.

[0011] The transmission shaft is provided with a gear, a lock fork and an emergency unlocking assembly.

[0012] The transmission shaft is connected with the rotating arm, or the rotating arm is connected with the sector gear through a shaft, and the driving force of the driving motor is transmitted to the rotating arm.

[0013] Compared with the prior art, the present application has the following advantages: the motor drive with a planetary gear reducer is adopted, the screw nut pair transmission is adopted, the plug-in is realized through the bearing grooves (on the left and right supports) and the upper guide rail guide, the bearing wheels installed on the bearing supports on both sides move in the grooves on the left and right supports, the linear guide rail and the bearing support assemblies on both sides realize the bearing function of the mechanism, and the mechanism replaces the existing linear bearing and the door carrying frame cooperation guide column mechanism, rotating locking devices are installed on both sides of the mechanism, the rotating locking devices are connected with the motor locking output shaft through gears, cams, swing rods or shafts, the side bearing support assemblies are connected with the door leaf, the door system realizes transverse plug-in movement, the door leaf is provided with vertical tension, the mechanism realizes the air-tight tension function of the door leaf, the motor locking output shaft transmits the driving force to the side lock through the side swing rod, the structure of the pure electric door system without air source is adapted, the problems of the existing bearing driving mechanism, such as complex structure, large space occupation, high cost and the inability to adapt to the pure electric door system without air source, are solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure of the bearing driving mechanism of the present application is shown in the figure Figure 1 ;

[0015] Figure 2 Structure diagram of the carrying driving mechanism of the application Figure 2 ;

[0016] Figure 3 Structure diagram of the carrying beam assembly of the application

[0017] Figure 4 Structure diagram of the locked state of the application

[0018] Figure 5 Structure diagram of the unlocked state of the application

[0019] Figure 1 is a left support; 2 is a right support; 3 is a rack; 4 is a carrying beam assembly; 5 is an electric control system; 6 is a rotating arm; 7 is a gear; 8 is a lock fork; 9 is an emergency unlocking assembly; 10 is a transmission shaft; 11 is a driving motor; 12 is a screw rod; 13 is a nut pair assembly; 14 is a slide; 15 is a sector gear; 16 is a carrying support; 17 is a carrying wheel; 18 is a yoke; 181 is a yoke roller; 19 is a linear guide rail; 20 is a lock pin; 201 is a lock pin roller one; 202 is a lock pin roller two; 21 is a roller mounting seat assembly; 22 is a carrying groove; 23 is a locking groove. DETAILED DESCRIPTION

[0020] The technical solutions of the application will be further described below in combination with the drawings and specific embodiments.

[0021] As Figure 1 , 2 The track transit door carrying driving mechanism and locking device of the application comprises a left support 1, a right support 2, a carrying beam assembly 4, an electric control system 5, a driving motor 11 and a slide 14 which are installed on a rack 3 through bolts; the carrying beam assembly 4 moves in the carrying groove 22 on the left support 1 and the right support 2 through the carrying wheel 17 installed thereon, that is, the direction of the carrying beam assembly 4 is realized; the linear guide rail 19 inside the carrying beam assembly 4 is connected with a door leaf, and bears the weight of the door leaf, that is, the carrying function is realized.

[0022] The electric control system 5 is a control component of the door system, and the driving motor 11 is a driving component of the door system; the two output ends of the driving motor 11 are connected with the transmission shaft 10 and the screw rod 12 respectively; under the signal control of the electric control system 5, the driving motor 11 drives the screw rod 12 to rotate, and the nut pair assembly 13 cooperates with the screw rod 12; the nut pair assembly 13 is connected with the roller mounting seat assembly 21, the rollers of the roller mounting seat assembly 21 move in the slide 14, the roller mounting seat assembly 21 is installed on the linear guide rail 19 through bolts, and the linear guide rail 19 is connected with the door leaf through bolts; under the signal control of the electric control system 5, the door leaf is driven to move along the track provided by the slide 14, the driving and transmission functions of the carrying driving mechanism are realized, that is, the opening and closing actions of the door are realized.

[0023] As Figure 3 The carrying beam assembly 4 of the present application is provided with a carrying support 16, a carrying wheel 17, a shift fork 18, a linear guide rail 19, a locking pin 20 and a roller mounting seat assembly 21.

[0024] As Figure 4 , 5 The left support 1 and the right support 2 of the present application are provided with a carrying groove 22 and a locking groove 23; the carrying support 16 is provided with the shift fork 18 and the locking pin 20; the shift fork 18 is installed with a shift fork roller 181; the locking pin 20 is installed with a locking pin roller one 201 and a locking pin roller two 202 through shafts at both ends.

[0025] The carrying support 16 is installed on both sides of the linear guide rail 19 through bolts, the carrying support 16 is installed with the locking pin 20, the locking pin 20 can rotate axially on the carrying support 16; the carrying support 16 is installed with the shift fork 18, the shift fork 18 drives the locking pin 20 to rotate by the shift fork roller 181.

[0026] During the plug-in stage of the switch door action, the carrying beam assembly 4 moves in the carrying groove 22 on the left support 1 and the right support 2 through the carrying wheel 17.

[0027] When the electric lock is closed, the transmission shaft 10 is connected with the driving motor 11, under the signal control of the electric control system 5, the driving motor 11 drives the transmission shaft 10 to rotate. When the transmission shaft 10 rotates, the gear 7, the lock fork 8 and the emergency unlocking assembly 9 installed on it rotate together. The lock fork 8 drives the shift fork 18 to rotate through the shift fork roller 181, when the shift fork 18 rotates, the locking pin roller one 201 is driven to act through the fork, because the locking pin 20 is installed on the carrying support 16 through the shaft, this action makes the locking pin 20 rotate from the Figure 5 unlocking position to the Figure 4 locking position. At this time, the locking pin roller two 202 rotates to the locking section of the locking groove 23 of the left support 1 and the right support 2, realizing the mechanical dead point type locking.

[0028] When unlocking the door, the lock fork 8 drives the shift fork 18 to rotate through the shift fork roller 181, when the shift fork 18 rotates, the locking pin roller one 201 is driven to act through the fork, because the locking pin 20 is installed on the carrying support 16 through the shaft, this action makes the locking pin 20 rotate from the Figure 4 locking position to the Figure 5 unlocking position. At this time, the locking pin roller two 202 rotates out of the locking position of the locking groove 23 of the left support 1 and the right support 2, realizing the electric unlocking.

[0029] When the emergency unlocking, the emergency unlocking assembly 9 is pulled to rotate through the steel wire, so as to drive the transmission shaft 10 to rotate, repeating the above unlocking action, realizing the emergency unlocking function.

[0030] The rotating arm 6 can be directly connected with the transmission shaft 10, or connected with the sector gear 15 through a shaft (the transmission ratio can be changed according to actual requirements) to transmit the driving force of the driving motor 11 to the rotating arm 6, and the rotating arm 6 is connected with the side locking device, that is, the driving force of the driving motor 11 is directly transmitted to the side lock. The structure can provide sufficient driving force for the door push-pull movement and sealing compression (side locking device).

[0031] Control Figure 1 、 2 The bearing driving mechanism in the application is composed of a left support 1, a right support 2, a rack 3, a bearing beam assembly 4 and a transmission shaft 10, and forms a parallel four-bar linkage structure to realize the synchronization of the two sides.

[0032] The bearing driving mechanism adopts an X-Y motion mode, the X direction realizes the door system push-pull movement, and the Y direction realizes the door system opening and closing direction movement. The bearing driving mechanism is composed of a rack, left and right supports, a driving motor, a bearing beam assembly, gears, a sector gear, a screw rod and a nut assembly, a slide, a transmission shaft and a rotating arm. The left and right supports, the driving motor and the upper slide are all installed on the rack. The bearing beam assembly is installed on the left and right supports through bearing wheels installed thereon, and is connected with the door leaf through a linear guide rail to bear the whole weight of the door leaf, provide the door system with a degree of freedom and reduce the movement resistance of the door leaf to the lowest. One output shaft of the driving motor is connected with the screw rod, the screw rod cooperates with the nut assembly to move, the nut assembly cooperates with the roller mounting seat assembly connected with the linear guide rail through bolts to drive the door leaf to move along the track defined by the slide, and the Y direction door system opening and closing direction movement is realized. The other output port of the driving motor is connected with the transmission shaft, the torque of the motor is transmitted to the lock pin through the lock fork and the fork assembly, the lock pin drives the bearing beam assembly (linear guide rail-door leaf) to move to the locking groove on the left and right supports to realize the locking function of the bearing driving mechanism. Meanwhile, the transmission shaft is connected with the rotating arm, or the torque of the driving motor is transmitted to the rotating arm through the gear or the gear cooperating with the sector gear (the transmission ratio can be changed according to actual requirements). The rotating arm can transmit the driving force of the motor to the side locking device. The structure can provide sufficient driving force for the door push-pull movement and sealing compression (side locking device).

[0033] The rail transit door bearing driving mechanism and locking device of the application adopts a modular design and has a compact structure, realizes the traditional bearing and driving functions, has an active locking function, can directly transmit the driving force of the motor to the side locking device to bring direct locking power to the door leaf, has an active locking force and can be applied to the requirements of air tightness in high-speed operation environments such as intercity and high-speed rail.

Claims

1. Rail transit door bearing drive mechanism and locking device, characterized by: The invention comprises a left bracket (1), a right bracket (2), a bearing beam assembly (4), an electric control system (5), a drive motor (11) and a slideway (14) installed on a frame (3); the bearing beam assembly (4) moves in bearing grooves (22) on the left bracket (1) and the right bracket (2) via bearing wheels (17) installed thereon, thereby realizing movement in the pull direction; the linear guide rail (19) inside the bearing beam assembly (4) is connected to the door leaf to bear the weight of the door leaf.

2. The rail transit door bearing drive mechanism and locking device according to claim 1, characterized in that: The electric control system (5) serves as a control component of the door system, and the drive motor (11) serves as a drive component of the door system. The two output ends of the drive motor (11) are respectively connected to the transmission shaft (10) and the screw rod (12); under the signal control of the electric control system (5), the drive motor (11) drives the screw rod (12) to rotate, and the nut subassembly (13) cooperates with the screw rod (12).

3. The rail transit door bearing drive mechanism and locking device according to claim 2, characterized in that: The nut subassembly (13) is connected to the roller mounting seat assembly (21), the roller of the roller mounting seat assembly (21) moves in the slideway (14), the roller mounting seat assembly (21) is installed on the linear guide rail (19), and the linear guide rail (19) is connected to the door leaf, so 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 (14), thereby realizing the driving and transmission functions of the bearing drive mechanism, that is, the door opening and closing action.

4. The rail transit door bearing drive mechanism and locking device according to claim 1, characterized in that: The load-bearing beam assembly (4) is provided with a load-bearing bracket (16), a load-bearing wheel (17), a shift fork (18), a linear guide rail (19), a locking pin (20) and a roller mounting seat assembly (21).

5. The rail transit door bearing drive mechanism and locking device according to claim 1, characterized in that: The left bracket (1) and the right bracket (2) are provided with a bearing groove (22) and a locking groove (23); the bearing bracket (16) is provided with a shift fork (18) and a locking pin (20); the shift fork (18) is provided with a shift fork roller (181); and the locking pin (20) is provided with a first locking pin roller (201) and a second locking pin roller (202) via two ends of a shaft.

6. The rail transit door bearing drive mechanism and locking device according to claim 4, characterized in that: The linear guide rail (19) is provided with supporting brackets (16) on both sides, and a locking pin (20) is provided on the supporting bracket (16). The locking pin (20) can rotate axially on the supporting bracket (16); a shift fork (18) is provided on the supporting bracket (16), and the shift fork (18) drives the locking pin (20) to rotate by shifting a locking pin roller (201).

7. The rail transit door bearing drive mechanism and locking device according to claim 1, characterized in that: The transmission shaft (10) is provided with a gear (7), a locking fork (8) and an emergency unlocking assembly (9).

8. The rail transit door bearing drive mechanism and locking device according to claim 7, characterized in that: The transmission shaft (10) is connected to the rotating arm (6), or the rotating arm (6) is connected to the sector gear (15) via a shaft, so as to transmit the driving force of the driving motor (11) to the rotating arm (6).

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