A safety door structure with multiple pull ropes

Abstract

This utility model provides a multi-rope safety gate structure, relating to the field of platform safety gate technology. It includes a fixed post and a lifting unit for sliding on the fixed post. The lifting unit includes a main frame and a mounting frame. A functional block is provided on the fixed post. A first roller and a second roller coaxially connected to the first roller are provided on the main frame. A first belt connected to the functional block is connected to the first roller, and a second belt is connected to the second roller. A driving unit for driving the main frame to rise and fall is provided on the fixed post. A first plate for fixed installation and a second plate for connecting to the second belt are provided on the mounting frame. Safety gate ropes are connected to both the first and second plates. This utility model uses multiple plates connected by ropes to form a safety gate. When the multiple safety gate plates are lowered, they provide sufficient protective height; when raised, they occupy little height. The entire structure is simple, not easily damaged, and highly safe.

Description

Technical Field

[0001] This utility model relates to the field of platform safety door technology, and in particular, it relates to a safety door structure with multiple sets of pull ropes. Background Technology

[0002] With urban development, the demand for rail vehicles to serve transportation functions between urban areas and suburbs is increasing. As different regions develop in diverse ways, the actual needs for rail vehicles vary greatly, including urban subways (including underground railways and surface light rail), and trains between cities (including bullet trains, high-speed trains, and regular trains), etc., all of which are collectively referred to as rail transit vehicles.

[0003] These rail transit platforms experience high passenger flow and operate at high speeds, necessitating the installation of platform screen doors to separate platform personnel from rail vehicles and prevent accidental falls. For example, Chinese utility model patent CN1517427A provides an intelligent platform screen door structure for rail transit, relating to the field of rail transit technology. It includes fixed columns and movable columns. The fixed columns have telescopic grooves with limit sliding columns inside. The movable columns include a main plate, a lead screw, and a slider. The upper end of the main plate has a rotating roller and a conveyor belt. The lead screw has a first connector and a second connector. The end of the conveyor belt away from the first connector is connected to the slider, which has a hook. There are at least two fixed columns and movable columns, with a pull rope connecting the movable columns on the two fixed columns to the hook at one end. The above-mentioned utility model is simple to set up. It uses a pull-rope type platform screen door to extend the distance between the platform screen door columns. One platform screen door area corresponds to the doors of multiple types of trains, which is suitable for the different requirements of different train door opening positions, making it convenient for passengers to get on and off. Moreover, the two-stage lifting structure of the pull rope is stable, and when the pull rope is lowered, it can effectively prevent people from falling onto the platform, thus ensuring high safety.

[0004] The aforementioned safety platform screen doors typically have eight horizontal pull ropes. If the distance between adjacent horizontal pull ropes remains constant (20cm) during the entire raising and lowering process, the safety door will create a safety protection height of at least 1.6 meters when lowered. This means that the safety door will also occupy 1.6 meters of height when raised, resulting in the top pull rope being 3.6 meters above the ground (the bottom pull rope needs to be 2 meters above the ground for passenger passage). Furthermore, there are high-voltage power lines above the high-speed rail platform, posing a significant safety hazard. Therefore, it is best to design the distance between adjacent pull ropes to vary. When the safety door is lowered, the distance between adjacent pull ropes should be larger (20cm) to provide sufficient safety protection height. When the safety door is raised, the distance between adjacent pull ropes should decrease, allowing passengers to pass underneath and reducing the height of the raised door.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient multi-rope safety gate structure. Utility Model Content

[0006] The purpose of this utility model is to provide a safety door structure with multiple sets of pull ropes. Multiple plates are connected by pull ropes to form a safety door. When the multiple safety door plates are lowered, they have sufficient protective height. When raised, they occupy little height. The whole structure is simple, not easy to be damaged, and has high safety.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A multi-rope safety gate structure includes a fixed post and a lifting part for sliding on the fixed post. The lifting part includes a main frame and a mounting frame. A functional block is provided on the fixed post. A first roller and a second roller coaxially connected to the first roller are provided on the main frame. A first belt connected to the functional block is connected to the first roller, and a second belt is connected to the second roller. A driving part for driving the main frame to lift and lower is provided on the fixed post. A first plate fixedly mounted on the mounting frame and a second plate for connecting to the second belt are provided. Safety gate pull ropes are connected to both the first plate and the second plate.

[0009] Before the main frame is raised along the fixed column, the height of the second plate is lower than the height of the first plate, that is, the second plate is located below the first plate;

[0010] Furthermore, when the lifting unit rises to its highest point, the second plate is approximately the same height as the first plate.

[0011] As a preferred embodiment of the present invention, the drive unit includes a traction belt connected to the main frame and a motor for driving the traction belt.

[0012] As a preferred embodiment of this invention, a counterweight is provided at the end of the traction belt away from the main frame.

[0013] As a preferred embodiment of this invention, the fixed column is provided with a first slide rail for facilitating the sliding of the main frame.

[0014] As a preferred embodiment of the present invention, the second roller includes at least two coaxially arranged roller bodies, and a derailleur plate is provided at the second roller.

[0015] As a preferred embodiment of this invention, the outer diameters of the plurality of rollers are all different.

[0016] As a preferred embodiment of this invention, the mounting bracket is provided with a third slide rail for facilitating the sliding of the second plate.

[0017] As a preferred embodiment of the present invention, both the first roller and the second roller are disposed on the top of the main frame; the first belt is connected to the first compensation roller, and the second belt is connected to the second compensation roller.

[0018] As a preferred embodiment of this invention, both the first plate and the second plate are provided with tension adjustment blocks for connecting to the safety door pull rope.

[0019] As a preferred embodiment of this invention, the traction belt, the first belt, and the second belt are all chains.

[0020] The advantages of this utility model of a multi-group pull rope safety door structure are as follows: multiple plates are connected by pull ropes to form a safety door; when the multiple safety door plates are lowered, they have sufficient protective height; when raised, they occupy little height; the whole structure is simple, not easily damaged, and highly safe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of one embodiment of a multi-group pull rope safety door structure according to the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the fixing column in one embodiment of a multi-group pull rope safety door structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the lifting part in one embodiment of a multi-group pull rope safety door structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the first and second straps in one embodiment of a multi-group pull rope safety door structure according to this utility model;

[0025] Figure 5 This is a schematic diagram of the first and second straps in another embodiment of a multi-group pull rope safety door structure according to this utility model;

[0026] In the diagram: 1. Fixed column, 10. Sliding block, 11. Traction belt, 12. Motor, 13. First slide rail, 15. Counterweight block, 2. Lifting part, 21. First plate, 22. Second plate, 221. Connecting foot, 23. Main frame, 24. Safety door pull rope, 241. Tension adjustment block, 26. Mounting frame, 231. First roller, 232. Second roller, 233. First belt, 234. Second belt, 235. Detachment plate, 236. First compensating roller, 261. Second compensating roller, 261. Third slide rail. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement and steps of the modules and steps set forth in these embodiments do not limit the scope of the present invention.

[0029] At the same time, it should be understood that, for ease of description, the process shown in the attached diagram is not performed in isolation, but rather involves multiple steps that overlap.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and systems known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and systems should be considered part of this application specification.

[0033] Example 1: As Figures 1 to 4 The illustration shown is merely one embodiment of this utility model. A multi-rope safety gate structure includes a fixed post 1 and a lifting part 2 for sliding on the fixed post 1. The lifting part 2 includes a main frame 23 and a mounting frame 26. A functional block 10 is provided on the fixed post 1. A first roller 231 and a second roller 232 coaxially connected to the first roller 231 are provided on the main frame 23. A first belt 233 connected to the functional block 10 is connected to the first roller 231, and a second belt 234 is connected to the second roller 232. A driving part for driving the main frame 23 to rise and fall is provided on the fixed post 1. A first plate 21 fixedly mounted and a second plate 22 for connecting to the second belt 234 are provided on the mounting frame 26. Safety gate pull ropes 24 are connected to both the first plate 21 and the second plate 22.

[0034] Before the main frame is raised along the fixed column, the height of the second plate is lower than the height of the first plate, that is, the second plate is located below the first plate;

[0035] Furthermore, when the lifting unit rises to its highest point, the second plate is approximately the same height as the first plate.

[0036] In this utility model, the fixed column 1 is the gatepost of the platform screen door. The lifting part 2 set on the fixed column 1 is connected to the safety door pull rope 24. The two ends of the safety door pull rope 24 are respectively connected to the lifting parts 2 on the two fixed columns 1 to form a pull rope safety door structure. When the lifting part 2 rises on the fixed column 1, the safety door rises, which makes it convenient for passengers to pass under the safety door pull rope 24 for getting on and off the train when it stops. Conversely, when the lifting part 2 falls on the fixed column 1, the safety door closes, blocking passengers from passing through, which is used for safety protection when the train is running.

[0037] First, regarding the structure of the fixed column 1, the fixed column 1 is equipped with a drive unit for driving the main frame 23 to rise and fall, and a first slide rail 13 for facilitating the sliding of the main frame 23. In other words, when the drive unit is working, it drives the main frame 23 to rise and fall along the first slide rail 13 to complete the opening and closing of the safety door. When the main frame 23 rises, the safety door opens; when the main frame 23 falls, the safety door closes.

[0038] Next is the structure of the lifting unit 2, which includes a main frame 23 and a mounting frame 26. The mounting frame 26 is provided with a first plate 21 for fixed installation and a second plate 22 for connection with the second belt 234. The main frame 23 is the main part of the lifting unit 2, and the mounting frame 26 is used to install the safety door panel. The first plate 21 is fixedly installed on the mounting frame 26, while the second plate 22 is movably installed on the mounting frame 26 and can slide up and down. The height of the second plate 22 is not higher than the height of the first plate 21. Safety door pull ropes 24 are connected to both the first plate 21 and the second plate 22. It can be understood that the first plate 21 and the second plate 22 form two relatively independent pull rope safety door body structures.

[0039] The connection relationship of the second plate 22 is as follows: the main frame 23 is provided with a first roller 231 and a second roller 232 coaxially connected to the first roller 231; the first roller 231 is connected to a first belt 233, the second roller 232 is connected to a second belt 234, and the first belt 233 is connected to the sliding block 10; the second plate 22 is connected to the second belt 234.

[0040] In other words, the first roller 231 and the second roller 232 form a pulley structure. When the sliding block 10 moves downward relative to the main frame 23, the second plate 22 moves upward relative to the main frame 23; conversely, when the sliding block 10 moves upward relative to the main frame 23, the second plate 22 moves downward relative to the main frame 23.

[0041] The sliding block 10 is fixedly mounted on the fixed column 1. When the main frame 23 rises, the sliding block 10 moves downward relative to the first roller 231, thereby driving the second plate 22 to move upward on the main frame 23; that is, the second belt 234 drives the second plate 22 to slide upward.

[0042] In summary, the first plate 21 rises synchronously with the mounting frame 26, while the second plate 22 rises along the mounting frame 26 while also being driven by the pulley structure, resulting in the second plate 22 rising at a faster speed than the first plate 21.

[0043] Before the lifting unit 2 is raised, the second plate 22 is located below the first plate 21, and the two safety door bodies just form a complete pull rope safety door, blocking passengers from passing through;

[0044] Finally, when the motor 12 drives the lifting unit 2 to rise to the highest point, the second plate 22 and the first plate 21 are at approximately the same height, that is, the second plate 22 and the first plate 21 overlap, reducing the height occupied after the safety door is raised.

[0045] This utility model discloses a multi-rope safety door structure, which uses multiple plates connected by ropes to form a safety door. When the multiple safety door plates are lowered, they have sufficient protective height, and when raised, they occupy little height. The entire structure is simple, not easily damaged, and highly safe.

[0046] Example 2, as Figures 1 to 5 The diagram shown is only one embodiment of this utility model. Based on embodiment one, the rising speed of the first plate 21 and the second plate 22 in the multi-rope safety door structure of this utility model is calculated as follows:

[0047] Let v be the speed at which the lifting part 2 rises, and let v be the speed at which the first plate 21 rises, which is the same as the speed at which the lifting part 2 rises.

[0048] At the sliding block 10, the sliding block 10 slides downward relative to the lifting part 2 at a speed of v; at this time, the transmission speed of the first belt 233 is v, and the transmission speed of the second belt 234 is n*v, where n is the ratio of the radius of the second roller 232 to the radius of the first roller 231 (the angular velocity of the first roller and the second roller are the same, and the linear velocity is proportional to the radius), that is, the rising speed of the second plate 22 is n*v+v, i.e. (1+n)*v.

[0049] The second roller 232 includes at least two coaxially arranged roller bodies, and a derailleur plate 235 is provided at the second roller 232.

[0050] The outer diameters of the multiple rollers are all different. Preferably, there are at least three rollers, which are respectively designated as roller 1, roller 2, and roller 3. The radius of roller 1 is smaller than the radius of roller 231 (n is less than 1), the radius of roller 2 is equal to the radius of roller 231 (n is equal to 1), and the radius of roller 3 is greater than the radius of roller 231 (n is greater than 1).

[0051] When the second belt 234 is moved onto the first roller by the derailleur plate 235 for transmission, the rising speed of the second plate 22 is between v and 2v; when the second belt 234 is moved onto the second roller by the derailleur plate 235 for transmission, the rising speed of the second plate 22 is 2v; when the second belt 234 is moved onto the third roller by the derailleur plate 235 for transmission, the rising speed of the second plate 22 is greater than 2v.

[0052] Similarly, the rising speed of the second plate 22 can be set to 1.1V, 1.3V, 1.5V, 2.2V, 2.4V, etc., simply by setting the second roller 232 to a specific radius.

[0053] It should be noted that before the lifting part 2 is raised, the second plate 22 is located below the first plate 21. Therefore, the lifting distance L2 of the second plate 22 from the lowest point to the highest point is greater than the lifting distance L1 of the first plate 22 from the lowest point to the highest point. The ratio of the radii of the second roller 232 to the first roller 231 can be set according to the ratio of L2 to L1.

[0054] For example, if the second plate 22 rises 1.8 meters from its lowest point to its highest point (L2), and the first plate 22 rises 1.2 meters from its lowest point to its highest point (L1), then the rising speed of the second plate 22 should be 1.5 times the rising speed of the first plate 21. Therefore, the ratio of the radii of the second roller 232 to the first roller 231 should be 0.5:1, making n = 0.5, and the rising speed of the second plate 22 is 1.5 * v.

[0055] Example 3, as Figures 1 to 5 As shown, this is only one embodiment of the present invention. Based on any of the above embodiments, in the multi-group pull rope safety door structure of the present invention, the driving unit includes a traction belt 11 connected to the main frame 23 and a motor 12 for driving the traction belt 11.

[0056] The fixed column 1 is provided with a first slide rail 13 to facilitate the sliding of the main frame 23.

[0057] A counterweight 15 is provided at the end of the traction belt 11 away from the main frame 23. The counterweight 15 serves to balance the weight of the entire main frame 23. When the main frame 23 is raised, the counterweight 15 is lowered; conversely, when the main frame 23 is lowered, the counterweight 15 is raised. After this counterweighting, the power required by the motor 12 to drive the main frame 23 to rise and fall is effectively reduced.

[0058] The mounting bracket 26 is provided with a third slide rail 261 to facilitate the sliding of the second plate 22, making the sliding of the second plate 22 more stable.

[0059] Furthermore, the second plate 22 is provided with a connecting pin 221 for connecting with the second strip 234.

[0060] In addition, the first roller 231 and the second roller 232 are both located on the top of the main frame 23; the first belt 233 and the second belt 234 are both annular belts. The first belt 233 is connected to the first compensation roller 236, and the second belt 234 is connected to the second compensation roller 237. In fact, the second belt 234 is also connected to a tensioning roller, which is used to tension the second belt 234 when it is moved by the derailleur plate 235.

[0061] Furthermore, the traction belt 11, the first belt 233, and the second belt 234 are all chains; the first roller and the second roller are both gear rollers, and the output shaft of the motor 12 is also equipped with gears, so that the traction belt 11, the first belt 233, and the second belt 234 are all gear chain drives.

[0062] Finally, both the first plate 21 and the second plate 22 are provided with tension adjustment blocks 241 for connecting to the safety door pull rope 24. The tension adjustment blocks 241 are used to horizontally tighten or loosen the safety door pull rope 24, so that the safety door pull rope 24 remains horizontally straight, preventing pedestrians from bending the safety door pull rope 24 and passing it between the two safety door pull ropes 24. In addition, two sets of tension adjustment blocks 241 are symmetrically arranged on both sides of the first plate 21 and / or the second plate 22, so that after the tension adjustment blocks 241 tighten the safety door pull rope 24, the tension of the safety door pull rope 24 on both sides of the first plate 21 and / or the second plate 22 is relatively balanced, and the forces on the left and right sides of the entire safety door column cancel each other out, resulting in a long service life and high safety.

[0063] This utility model is not limited to the specific embodiments described above, and various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made to the above embodiments based on the technical essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A safety gate structure with multiple sets of pull ropes, characterized in that: The device includes a fixed column (1) and a lifting part (2) for sliding on the fixed column (1). The lifting part (2) includes a main frame (23) and a mounting frame (26). A functional block (10) is provided on the fixed column (1). A first roller (231) and a second roller (232) coaxially connected to the first roller (231) are provided on the main frame (231). A first belt (233) connected to the functional block (10) is connected to the first roller (231), and a second belt (234) is connected to the second roller (232). A driving part for driving the main frame (23) to lift is provided on the fixed column (1). A first plate (21) for fixed installation and a second plate (22) for connecting to the second belt (234) are provided on the mounting frame (26). Safety door pull ropes (24) are connected to both the first plate (21) and the second plate (22).

2. The safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: The drive unit includes a traction belt (11) connected to the main frame (23) and a motor (12) for driving the traction belt (11).

3. The safety door structure with multiple sets of pull ropes according to claim 2, characterized in that: A counterweight (15) is provided at the end of the traction belt (11) away from the main frame (23).

4. The safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: The fixed column (1) is provided with a first slide rail (13) for facilitating the sliding of the main frame (23).

5. A safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: The second roller (232) includes at least two coaxially arranged roller bodies, and a derailleur plate (235) is provided at the second roller (232).

6. A safety door structure with multiple sets of pull ropes according to claim 5, characterized in that: The outer diameters of the various rollers are all different.

7. A safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: The mounting bracket (26) is provided with a third slide rail (261) for facilitating the sliding of the second plate (22).

8. A safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: The first roller (231) and the second roller (232) are both located on the top of the main frame (23); the first belt (233) is connected to the first compensation roller (236), and the second belt (234) is connected to the second compensation roller (237).

9. A safety door structure with multiple sets of pull ropes according to claim 1, characterized in that: Both the first plate (21) and the second plate (22) are provided with tension adjustment blocks (241) for connecting with the safety door pull rope (24).

10. A safety door structure with multiple sets of pull ropes according to claim 2, characterized in that: The traction belt (11), the first belt (233) and the second belt (234) are all chains.

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