Bearing driving mechanism applied to rail transit door

Abstract

The utility model discloses a bearing driving mechanism applied to a rail transit door, which comprises a rack, a left support, a right support, an electric control system, a driving motor and a slideway are arranged on the rack, the left support and the right support on two sides of the rack are connected with a transmission frame assembly through a guide wheel and a bearing wheel, and the transmission frame assembly is connected with a linear guide rail. The transmission frame assembly, the driving motor and the guide rod form a crank sliding block structure; the two output ends of the driving motor are connected with the lead screw and the transmission shaft respectively, the driving motor drives the connecting support to move through the nut pair assembly and the hinge which are matched with the lead screw, and the connecting support is matched with the sliding way and connected with the linear guide rail. The utility model has the advantages of simple structure, small appearance size and low cost; the bearing and driving functions are achieved, meanwhile, driving force can be directly provided for the side face locking device, and an extra air source or power source does not need to be provided for the side face locking device.

Description

Technical Field

[0001] This utility model relates to the field of rail transit doors, and more particularly to a load-bearing drive mechanism. Background Technology

[0002] In existing EMU door systems, the drive and control system uses an electric control method, while the locking system uses a pneumatic method. The load-bearing drive mechanism and the side locking system are not directly connected by a power source. This necessitates laying a pneumatic circuit system for the door system on the vehicle, complicating the vehicle structure, increasing railway line costs, and wasting energy.

[0003] When this type of door system's load-bearing drive mechanism is applied to a single-opening sliding door system, it requires a linear bearing and guide post structure to achieve sliding movement, and a synchronous balancing device to ensure the synchronicity of sliding movement on both sides. This results in a complex structure, large space occupation, and high cost. Furthermore, there is no driving force transmitted to the side locking device, making it unsuitable for pure electric door systems without an air source.

[0004] Therefore, it is necessary to develop new load-bearing drive mechanisms to overcome the above problems. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a load-bearing drive mechanism for rail transit doors, which has a simple structure, small size and low cost; while having load-bearing and drive functions, it can directly provide driving force for the side locking device without providing an additional air source or power source for the side locking device.

[0006] Technical Solution: This utility model discloses a load-bearing drive mechanism for rail transit doors, characterized in that it includes a frame, on which left and right supports, an electrical control system, a drive motor, and a slide rail are mounted. The left and right supports on both sides of the frame are connected to a transmission frame assembly via guide wheels and load-bearing wheels. The transmission frame assembly is connected to a linear guide rail. The transmission frame assembly, drive motor, and guide rod form a crank-slider structure. The two output ends of the drive motor are respectively connected to a lead screw and a transmission shaft. The drive motor drives the connecting support to move via a nut assembly that cooperates with the lead screw and a hinge. The connecting support cooperates with the slide rail and is connected to the linear guide rail.

[0007] The left and right supports, electrical control system, drive motor and slide rail are all bolted to the frame.

[0008] The linear guide rail and the transmission frame assembly are connected by bolts.

[0009] The linear guide rail is connected to the door leaf of the rail transit door by bolts.

[0010] The drive shaft is connected to the guide rods at both ends via square holes or threads, and the guide rods are connected to the drive frame assemblies on both sides.

[0011] The drive shaft is connected to the rotating arm through a square hole.

[0012] The transmission frame assembly includes a transmission frame.

[0013] The connecting bracket and the linear guide rail are connected by bolts.

[0014] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: This utility model adopts a modular design, resulting in a compact structure. While achieving load-bearing and driving functions, it can also transmit motor driving force to the side locking device. Its side guide devices use a load-bearing wheel and bracket structure instead of the existing linear bearing and guide column structure. The side guide and force transmission devices use a crank-slider mechanism, which enables the door system to move laterally while providing vertical tension to the door leaf, achieving the airtight tensioning function of the mechanism. It has a compact structure and achieves multiple functions simultaneously. The driving force is transmitted to the side lock through a multi-port motor and side swing arm, adapting to the structure of a pure electric door system without an air source. It solves the problems of existing load-bearing drive mechanisms being complex, space-consuming, costly, and unable to adapt to the structure of pure electric door systems without an air source. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the transmission frame assembly of this utility model;

[0018] In the diagram, 1 is the frame; 2 is the left and right supports; 3 is the linear guide rail; 4 is the electrical control system; 5 is the drive shaft; 6 is the transmission frame assembly; 7 is the swing arm; 8 is the drive motor; 9 is the slide rail; 10 is the hinge; 11 is the lead screw; 12 is the nut assembly; 13 is the connecting bracket; 14 is the guide rod; 15 is the transmission frame; 16 is the guide wheel; and 17 is the load-bearing wheel. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] As attached Figure 1 With appendix Figure 2This utility model relates to a load-bearing drive mechanism for rail transit doors, comprising a frame 1, on which are mounted left and right supports 2, an electrical control system 4, a drive motor 8, and a slide rail 9. The left and right supports 2 on both sides of the frame 1 are connected to a transmission frame assembly 6 via guide wheels 16 and load-bearing wheels 17. The transmission frame assembly 6 is connected to a linear guide rail 3. The transmission frame assembly 6, the drive motor 8, and the guide rod 14 form a crank-slider structure. The electrical control system 4 is the control component of the door system, and the drive motor 8 is the drive component of the door system. The two output ends of the drive motor 8 are respectively connected to a lead screw 11 and a transmission shaft 5. The lead screw 11 is connected to the drive motor 8. Under the signal control of the electrical control system 4, the drive motor 8 drives the connecting bracket 13 to move in the opening and closing direction through the nut assembly 12 and the hinge 10 that cooperate with the lead screw 11. The connecting bracket 13 cooperates with the slide rail 9, the connecting bracket 13 is connected to the linear guide rail 3, the connecting bracket 13 and the linear guide rail 3 are connected by bolts, and the linear guide rail 3 is connected to the door leaf of the rail transit door by bolts. Finally, under the signal control of the electronic control system 4, the door leaf slide rail 8 is driven to move along the trajectory.

[0021] The left and right supports 2, the electrical control system 4, the drive motor 8, and the slide rail 9 of this utility model are all bolted to the frame 1, bearing the entire weight of the door leaf while providing freedom of movement for the door system and minimizing the resistance to door leaf movement. The linear guide rail 3 is bolted to the transmission frame assembly 6. The drive shaft 5 is connected to the drive motor 8, and under the signal control of the electrical control system 4, the drive motor 8 drives the drive shaft 5 to rotate. The drive shaft 5 is connected to the guide rods 14 at both ends through square holes or threads. The guide rods 14 are connected to the transmission frame assemblies 6 on both sides through shafts or other connection methods. The drive motor 8, guide rods 14, and transmission frame assembly 6 together form a crank-slider structure. The transmission frame assembly 6 is bolted to the linear guide rail 3. Under the power of the drive motor 8, the door leaf connected to the linear guide rail 3 moves in a sliding direction. At the same time, the rotating arm 7 is connected to the drive shaft 5 through a square hole, transmitting the driving force of the drive motor 8 to the rotating arm 7. The rotating arm 7 is connected to the side locking device, that is, the driving force of the drive motor 8 is directly transmitted to the side lock. This structure provides sufficient active driving force for the door leaf sliding movement and sealing compression (side locking device).

[0022] As attached Figure 3 The transmission frame assembly 6 of this utility model consists of a transmission frame 15, a guide wheel 16, and a bearing wheel 17. The guide wheel 16 and the bearing wheel 17 engage with the left and right supports 2 through defined slots. (See attached diagram.) Figure 1 and attached Figure 2 It can be seen that the transmission frame assembly 6 is connected to the linear guide rail 3 by bolts. That is, the transmission shaft 5, the transmission frame assembly 6 and the linear guide rail 3 form a parallel four-bar structure to achieve the synchronization of movement on both sides.

[0023] This utility model's load-bearing drive mechanism adopts an XY-axis motion mode. The X-axis enables the door system's sliding motion, and the Y-axis enables the door system's opening and closing motion. The load-bearing drive mechanism consists of a frame, left and right supports, a drive motor, linear guide rails, a lead screw and nut assembly, a slide rail, a transmission frame assembly, a transmission shaft, a connecting bracket, hinges, guide rods, and a rotating arm. The left and right supports, drive motor, and upper slide rail are all mounted on the frame. The two side transmission frame assemblies are mounted on the left and right supports via load-bearing wheels and guide wheels, and are connected to the linear guide rails. They bear the entire weight of the door leaf, providing freedom of movement for the door system while minimizing resistance. The slide rails ensure the door leaf moves along a predetermined trajectory. The drive motor is connected to the lead screw and drives the door leaf through the nut assembly, achieving the Y-axis opening and closing motion of the door system. Simultaneously, the drive motor is connected to the guide rod and rotating arm via the transmission shaft. The guide rod transmits driving force to the transmission plate assembly, achieving the X-axis sliding motion of the door system. The rotating arm transmits the motor's driving force to the side locking device. This structure provides sufficient active driving force for the door leaf sliding movement and sealing compression (side locking device).

Claims

1. A load-bearing drive mechanism applied to rail transit doors, characterized in that: The system includes a frame (1), on which are mounted left and right supports (2), an electrical control system (4), a drive motor (8), and a slide rail (9). The left and right supports (2) on both sides of the frame (1) are connected to the transmission frame assembly (6) via guide wheels (16) and bearing wheels (17). The transmission frame assembly (6) is connected to the linear guide rail (3). The transmission frame assembly (6), the drive motor (8), and the guide rod (14) form a crank-slider structure. The two output ends of the drive motor (8) are connected to the lead screw (11) and the transmission shaft (5) respectively. The drive motor (8) drives the connecting bracket (13) to move via the nut assembly (12) and the hinge (10) that cooperate with the lead screw (11). The connecting bracket (13) cooperates with the slide rail (9) and is connected to the linear guide rail (3).

2. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The left and right supports (2), the electrical control system (4), the drive motor (8) and the slide rail (9) are all bolted to the frame (1).

3. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The linear guide rail (3) is connected to the transmission frame assembly (6) by bolts.

4. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The linear guide rail (3) is connected to the door leaf of the rail transit door by bolts.

5. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The drive shaft (5) is connected to the guide rods (14) at both ends through square holes or threads, and the guide rods (14) are connected to the drive frame assemblies (6) on both sides.

6. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The drive shaft (5) is connected to the rotating arm (7) through a square hole.

7. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The transmission frame assembly (6) includes a transmission frame (15).

8. The load-bearing drive mechanism for rail transit doors according to claim 1, characterized in that: The connecting bracket (13) is connected to the linear guide rail (3) by bolts.

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