Platform door roller assembly

Abstract

The utility model discloses a platform door roller assembly which comprises a main body frame, a supporting plate is fixedly arranged at the upper end of the main body frame, a rail is arranged at the lower end of the supporting plate, a first driving structure is movably arranged on the main body frame, and the first driving structure comprises a first moving frame, a first roller, a first threaded rod and a sliding rod. The multiple first rolling wheels are arranged, and movement of the platform door is achieved through a first driving structure. An extension frame is fixedly arranged at the side end of the main body frame, second driving structures are arranged on the extension frame, each second driving structure comprises a second moving frame, a second rolling wheel and a second threaded rod, the number of the second driving structures is two, the second rolling wheels are arranged on the second moving frames, and the platform door is driven by the second driving structures to move.

Description

Technical Field

[0001] The utility model relates to the field of platform door equipment, and more specifically, to a platform door roller assembly. Background Art

[0002] Subways are very common in people's lives. The emergence of subways and other rail trains has greatly facilitated people's travel life. When people take the subway, they often need to pass through the platform door and the subway car door to enter the subway car. When the subway arrives, the roller assembly of the platform door drives the platform door to move. The roller assembly cooperates with the track through two rollers, and the rollers are engaged with both sides of the track to realize the opening and closing of the platform door. When the subway arrives, the subway has a certain speed, which will drive the airflow to impact the platform door, and the roller will be squeezed onto the track, which is easy to cause damage to the track or the roller. At the same time, the existing roller assembly only drives the platform door to move through a set of driving structures. When the driving structure is damaged, it affects the opening and closing of the platform door, which is inconvenient to use the platform door. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the utility model provides a platform door roller assembly to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a platform door roller assembly, comprising a main frame, a support plate is fixedly arranged at the upper end of the main frame, a track is arranged at the lower end of the support plate, a first driving structure is movably arranged on the main frame, the first driving structure comprises a first moving frame, a first roller, a first threaded rod and a sliding rod, a plurality of the first rollers are arranged, and the platform door is moved by the first driving structure;

[0007] An extension frame is fixedly provided on the side end of the main frame, and a second driving structure is provided on the extension frame. The second driving structure includes a second movable frame, a second roller and a second threaded rod. The second driving structure is provided with two groups. The second roller is arranged on the second movable frame, and the platform door is driven to move through the second driving structure.

[0008] The utility model is further configured as follows: a mounting groove is provided on the main frame, the first threaded rod and the sliding rod are installed inside the mounting groove, a mounting plate is detachably provided on the main frame, the first threaded rod and the sliding rod are arranged between two mounting plates, the first threaded rod and the sliding rod both pass through the first movable frame, and the first roller is arranged on the first movable frame, thereby facilitating the installation of the first threaded rod and the sliding rod.

[0009] The utility model is further configured such that the first threaded rod is rotatably connected to the mounting plate via a bearing, threads are provided at both ends of the slide rod, the slide rod is threadedly connected to the mounting plate, the first threaded rod is threadedly connected to the first movable frame, and the slide rod is slidably connected to the first movable frame, thereby facilitating the movement of the first movable frame along the mounting groove.

[0010] The utility model is further configured such that an electric push rod is fixedly provided at the lower end of the main frame, a moving block is fixedly provided at the lower end of the electric push rod, a slide groove is provided at the side end of the track, the moving block and the slide groove cooperate with each other, a spring is provided in the slide groove, and a plurality of springs are provided, so as to facilitate the lateral movement of the main frame when the platform door is impacted.

[0011] The utility model is further configured such that the second threaded rod is arranged on the extension frame and is rotatably connected to the extension frame through a bearing, the second threaded rod passes through the second movable frame and is threadedly connected to the second movable frame, and a plurality of second rollers are provided, thereby facilitating driving the entire structure through the second rollers.

[0012] The utility model is further configured such that the second roller is rotatably connected to the second movable frame via a bearing, a second motor is fixedly provided on the extension frame, and an output end of the second motor is connected to the second threaded rod, so that the second threaded rod can drive the second movable frame to move.

[0013] The utility model is further configured as follows: a first limiting groove cooperating with the first roller is provided on the track, second limiting grooves cooperating with the second roller are provided at both ends of the track, a plurality of second limiting grooves are provided, a first motor is provided on the first moving frame and the second moving frame, and an output end of the first motor is connected between the first roller and the second roller, thereby facilitating the rotation of the first roller and the second roller.

[0014] The utility model is further configured that a third motor is fixedly arranged on the main frame, the output end of the third motor is connected to the first threaded rod, and the first threaded rod is driven to rotate by the third motor.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a platform door roller assembly, which has the following beneficial effects:

[0017] 1. The utility model arranges an extension frame on the main frame, and arranges a second movable frame and a second roller on the extension frame. The second motor drives the second threaded rod to rotate, thereby driving the second movable frame to move, so that the second roller contacts with the second limiting groove provided on the track, so as to drive the main frame to move along the track. When the door does not need to be opened, the second threaded rod rotates to drive the second movable frame and the second roller to separate from the track. Therefore, when the airflow generated by the arrival of the train impacts the platform door, the second roller will not contact with the track, thereby not causing damage to the roller, which is convenient for long-term use of the roller.

[0018] 2. The utility model sets a first driving structure on the main frame, and drives the first threaded rod to rotate through the third motor, thereby driving the first movable frame to descend, so that the surface of the first roller contacts the first limiting groove provided on the track, so that when the second roller is damaged, the platform door is driven to move by the rotation of the first roller, so as to facilitate the opening and closing of the platform door.

[0019] 3. The utility model sets an electric push rod at the lower end of the main frame, and the extension of the electric push rod drives the moving block to descend, so that the moving block enters the slide groove and is located between two springs. Therefore, after the airflow blows the platform door to move, the moving block moves along the slide groove and compresses the spring. When the airflow disappears, the spring pushes the moving block to move and the platform door returns to the corresponding position, so as to protect the platform door when the airflow impacts and reduce the damage to the platform door. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a platform door roller assembly;

[0021] Figure 2 It is a schematic diagram of the matching structure of a main frame and a first driving structure of a platform door roller assembly;

[0022] Figure 3 It is a schematic diagram of the matching structure of a main frame and a second driving structure of a platform door roller assembly;

[0023] Figure 4 It is a schematic diagram of the matching structure of a main frame and a track of a platform door roller assembly;

[0024] Figure 5 The present invention is a schematic structural diagram of a main frame of a platform door roller assembly.

[0025] In the figure: 1, main frame; 2, support plate; 3, track; 4, first moving frame; 5, first roller; 6, first threaded rod; 7, slide rod; 8, extension frame; 9, second moving frame; 10, second roller; 11, second threaded rod; 12, mounting groove; 13, mounting plate; 14, electric push rod; 15, moving block; 16, slide groove; 17, spring; 18, second motor; 19, first limit groove; 20, second limit groove; 21, first motor; 22, third motor. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A platform door roller assembly comprises a main frame 1, a support plate 2 is fixedly arranged at the upper end of the main frame 1, a track 3 is arranged at the lower end of the support plate 2, a first driving structure is movably arranged on the main frame 1, the first driving structure comprises a first moving frame 4, a first roller 5, a first threaded rod 6 and a sliding rod 7, and a plurality of first rollers 5 are arranged;

[0030] An extension frame 8 is fixedly provided at the side end of the main frame 1, and a second driving structure is provided on the extension frame 8. The second driving structure includes a second mobile frame 9, a second roller 10 and a second threaded rod 11. The second driving structure is provided with two groups, and the second roller 10 is provided on the second mobile frame 9.

[0031] In this embodiment, the platform door is mounted on the support plate 2 by bolts, and the entire roller assembly is formed by the cooperation of the main frame 1, the first driving structure and the second driving structure.

[0032] More specifically, the platform door is driven to move by the cooperation between the first driving structure and the second driving structure and the track 3 .

[0033] See also Figure 1-Figure 5, as an implementation method for moving the first driving structure: a mounting groove 12 is opened on the main frame 1, the first threaded rod 6 and the sliding rod 7 are installed inside the mounting groove 12, a mounting piece 13 is detachably provided on the main frame 1, the first threaded rod 6 and the sliding rod 7 are arranged between the two mounting pieces 13, the first threaded rod 6 and the sliding rod 7 both pass through the first moving frame 4, the first roller 5 is arranged on the first moving frame 4, the first threaded rod 6 is rotatably connected to the mounting piece 13 through a bearing, both ends of the sliding rod 7 are provided with threads, the sliding rod 7 is threadedly connected to the mounting piece 13, the first threaded rod 6 is threadedly connected to the first moving frame 4, the sliding rod 7 is slidably connected to the first moving frame 4, and a third motor 22 is fixedly provided on the main frame 1, and the output end of the third motor 22 is connected to the first threaded rod 6;

[0034] Specifically, when the first driving structure is needed, the third motor 22 drives the first threaded rod 6 to rotate, and through the threaded connection between the first threaded rod 6 and the first moving frame 4, drives the first moving frame 4 to descend, thereby driving the first roller 5 to descend, so that the surface of the first roller 5 contacts the first limiting groove 19 opened on the track 3, and the electric push rod 14 contracts to drive the moving block 15 to separate from the track 3, and the first motor 21 drives the first roller 5 to rotate, thereby driving the main frame 1 and the platform door installed on the main frame 1 to move.

[0035] Please refer to Figure 1-5 , as an implementation method for driving the second driving structure and reducing the impact of the platform door: when the train arrives, the airflow impacts the platform door, pushing the main frame 1 to move horizontally in the slide groove 16 opened on the track 3, and the moving block 15 compresses the spring 17 in the slide groove 16. When the airflow disappears, the spring 17 pushes the moving block 15 to move, so that the main frame 1 is reset. When driven by the second driving structure, the second motor 18 arranged on the extension frame 8 drives the second threaded rod 11 to rotate, and through the threaded connection between the second threaded rod 11 and the second moving frame 9, the second roller 10 is driven to contact with the second limiting groove 20 opened on the track 3, so that the second roller 10 is driven to rotate by the first motor 21 to realize the movement of the platform door;

[0036] In summary, when used as a whole:

[0037] When the first driving structure is needed, the third motor 22 drives the first threaded rod 6 to rotate, and through the threaded connection between the first threaded rod 6 and the first moving frame 4, drives the first moving frame 4 to descend, thereby driving the first roller 5 to descend, so that the surface of the first roller 5 contacts the first limiting groove 19 opened on the track 3, and the electric push rod 14 contracts to drive the moving block 15 to separate from the track 3, and the first motor 21 drives the first roller 5 to rotate, thereby driving the main frame 1 and the platform door installed on the main frame 1 to move.

[0038] When the train arrives, the airflow impacts the platform door, pushing the main frame 1 to move horizontally in the slide groove 16 opened on the track 3, and the moving block 15 compresses the spring 17 in the slide groove 16. When the airflow disappears, the spring 17 pushes the moving block 15 to move, so that the main frame 1 is reset.

[0039] When driven by the second driving structure, the second motor 18 arranged on the extension frame 8 drives the second threaded rod 11 to rotate, and through the threaded connection between the second threaded rod 11 and the second movable frame 9, the second roller 10 is driven to contact the second limiting groove 20 opened on the track 3, so that the second roller 10 is driven to rotate by the first motor 21 to realize the movement of the platform door.

[0040] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A platform door roller assembly, comprising a main frame (1), characterized in that: A support plate (2) is fixedly arranged at the upper end of the main frame (1), a track (3) is arranged at the lower end of the support plate (2), and a first driving structure is movably arranged on the main frame (1), the first driving structure comprising a first moving frame (4), a first roller (5), a first threaded rod (6) and a sliding rod (7), and a plurality of first rollers (5) are arranged; An extension frame (8) is fixedly arranged at the side end of the main frame (1), and a second driving structure is arranged on the extension frame (8). The second driving structure comprises a second movable frame (9), a second roller (10) and a second threaded rod (11). The second driving structure is provided with two groups, and the second roller (10) is arranged on the second movable frame (9).

2. The platform door roller assembly according to claim 1, characterized in that: The main frame (1) is provided with a mounting groove (12), the first threaded rod (6) and the sliding rod (7) are installed inside the mounting groove (12), the main frame (1) is detachably provided with a mounting plate (13), the first threaded rod (6) and the sliding rod (7) are arranged between two mounting plates (13), the first threaded rod (6) and the sliding rod (7) both pass through the first movable frame (4), and the first roller (5) is arranged on the first movable frame (4).

3. The platform door roller assembly according to claim 2, characterized in that: The first threaded rod (6) is rotatably connected to the mounting plate (13) via a bearing, both ends of the slide rod (7) are provided with threads, the slide rod (7) is threadedly connected to the mounting plate (13), the first threaded rod (6) is threadedly connected to the first movable frame (4), and the slide rod (7) is slidably connected to the first movable frame (4).

4. The platform door roller assembly according to claim 1, characterized in that: An electric push rod (14) is fixedly provided at the lower end of the main frame (1), a moving block (15) is fixedly provided at the lower end of the electric push rod (14), a sliding groove (16) is provided at the side end of the track (3), the moving block (15) and the sliding groove (16) cooperate with each other, a spring (17) is provided in the sliding groove (16), and a plurality of springs (17) are provided.

5. The platform door roller assembly according to claim 1, characterized in that: The second threaded rod (11) is arranged on the extension frame (8) and is rotatably connected to the extension frame (8) via a bearing. The second threaded rod (11) passes through the second movable frame (9) and is threadedly connected to the second movable frame (9). A plurality of second rollers (10) are arranged.

6. A platform door roller assembly according to claim 5, characterized in that: The second roller (10) is rotatably connected to the second movable frame (9) via a bearing, a second motor (18) is fixedly arranged on the extension frame (8), and an output end of the second motor (18) is connected to the second threaded rod (11).

7. The platform door roller assembly according to claim 1, characterized in that: The track (3) is provided with a first limiting groove (19) cooperating with the first roller (5), and both ends of the track (3) are provided with second limiting grooves (20) cooperating with the second roller (10), and a plurality of second limiting grooves (20) are provided. The first moving frame (4) and the second moving frame (9) are both provided with a first motor (21), and the output end of the first motor (21) is connected between the first roller (5) and the second roller (10).

8. The platform door roller assembly according to claim 2, characterized in that: A third motor (22) is fixedly arranged on the main frame (1), and an output end of the third motor (22) is connected to the first threaded rod (6).

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