A multifunctional platform safety door structure

Abstract

This invention provides a multifunctional platform screen door structure, relating to the field of high-speed rail screen door technology. It includes a column, a slider mounted on the column, and pull ropes connected to the slider. A drive roller is located at the top of the column, connected to a transmission chain. One end of the transmission chain is connected to the slider, and counterweights are spaced apart on the transmission chain, with at least two counterweights. The slider is horizontally positioned, with both ends extending to both sides of the column. Pull ropes are connected to both ends of the slider. This invention balances the lifting and lowering of the slider by using counterweights at the platform screen door column, reducing the driving power required to lift the screen door. Furthermore, the slider on the column lifts and lowers in a single stage, with pull ropes extending simultaneously from both sides of the slider. This simultaneous lifting and lowering of the pull ropes on both sides of the column prevents tilting and damage. The synchronous lifting and lowering of the pull ropes effectively prevents abnormal slider deviation, ensuring good horizontality and high safety.

Description

Technical Field

[0001] This invention relates to the field of high-speed rail safety door technology, and in particular, to a multifunctional platform safety door structure. 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 invention patent CN116517427A 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 within them. The movable columns include a main body plate, a lead screw, and a slider. The upper end of the main body 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 invention is simple to set up. It uses a pull-rope platform screen door to extend the distance between the screen door columns. One screen door area can correspond to the doors of multiple types of trains, which is suitable for different trains with different door opening positions. It is convenient for passengers to get on and off. Moreover, the two-stage lifting structure of the pull rope is stable. When the pull rope is lowered, it can effectively prevent people from falling off the platform, which is highly safe.

[0004] However, the aforementioned intelligent platform screen door structure for rail transit stations still has the following drawbacks: the pull rope screen door has many pull ropes, and the pull ropes are generally as long as 15 meters, so the weight of the pull ropes and sliders is very large, and the driving power is still relatively large. In addition, there are many pull rope screen doors on a platform, resulting in a huge overall platform power and a great waste of resources. Moreover, the multi-stage lifting structure makes the lifting stability of the pull ropes worse. The heavy pull ropes can pull the movable column to tilt and be damaged, and the sliding position of the slider may be more displaced, causing the pull ropes to tilt and become dangerous.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable, efficient and multifunctional platform safety door structure. Summary of the Invention

[0006] The purpose of this invention is to provide a multifunctional platform safety door structure. By setting counterweights at the platform door posts to balance the lifting and lowering of the slider, the driving power for lifting and lowering the safety door is reduced. Moreover, the slider on the post lifts and lowers in a single stage, and pull ropes are pulled out from both sides of the slider at the same time, so that the pull ropes on both sides of the post lift and lower simultaneously. The two sides of the post are balanced and not prone to tilting or damage. Furthermore, the synchronous lifting and lowering of the pull ropes effectively prevents abnormal deviation of the slider, and the pull ropes have good horizontality and high safety.

[0007] To achieve the above objectives, the present invention employs the following technical solution:

[0008] A multifunctional platform safety gate structure includes a column, a slider mounted on the column, and a pull rope connected to the slider. A drive roller is provided at the top of the column, and a transmission chain is connected to the drive roller. One end of the transmission chain is connected to the slider. Counterweights are spaced apart on the transmission chain, and the number of counterweights is at least two. The slider is horizontally positioned such that both ends of the slider extend to both sides of the column, and pull ropes are connected to both ends of the slider.

[0009] As a preferred embodiment of the present invention, an additional block is provided on the counterweight block, and the additional block is provided on the side of the counterweight block away from the column;

[0010] This ensures that the counterweight block, on which the additional block is installed, is located on the side of the column away from the slider;

[0011] When the slider is raised to the upper limit, the counterweight without the additional block is located on the side of the column away from the slider; and when the slider is lowered to the lower limit, the counterweight without the additional block is located on the side of the column closer to the slider.

[0012] As a preferred embodiment of the present invention, the transmission chain is provided with a mounting buckle for connecting to the counterweight, the mounting buckle is connected to the end face of the counterweight, the mounting buckle is provided with a side plate for connecting to the side of the counterweight near the column, the side plate is provided with a mounting bolt for connecting to the counterweight, the counterweight is provided with a first hole for facilitating the passage of the mounting bolt; the auxiliary block is provided with a second hole for facilitating the passage of the mounting bolt.

[0013] As a preferred embodiment of the present invention, a reinforcing plate is provided on the side of the counterweight away from the additional block, and a reinforcing screw extending toward the counterweight is provided on the reinforcing plate. A third hole is provided on the counterweight to facilitate the passage of the reinforcing screw, and a fourth hole is provided on the additional block to facilitate the passage of the reinforcing screw.

[0014] As a preferred embodiment of the present invention, a first nut is fitted onto the mounting bolt, and the number of the first nut and the mounting bolt is at least one; a second nut is fitted onto the reinforcing screw, and the number of the second nut and the reinforcing screw is at least one.

[0015] As a preferred embodiment of the present invention, the outer side of the drive roller is provided with an annular tooth for meshing with the transmission chain, the drive roller is connected to a drive motor, the output shaft of the drive motor is provided with a gear, and the gear is connected to an absolute encoder.

[0016] As a preferred embodiment of the present invention, there are two transmission chains, and the two transmission chains are respectively connected to the two ends of the counterweight block through the mounting buckle.

[0017] As a preferred embodiment of the present invention, the number of sliders is at least two, and a limiting rope is provided between adjacent two sliders; a slide rail column is provided on the side of the column, a guide limiting block is provided on the slider for connecting with the slide rail column, a hook is provided at the end of the slider for connecting with the pull rope, and a horizontal groove is provided on the slider to facilitate the sliding of the hook.

[0018] As a preferred embodiment of the present invention, a base plate is provided at the bottom end of the column, and anti-loosening bolts are provided on the base plate.

[0019] As a preferred embodiment of the present invention, the number of columns is at least two, and an absolute encoder is electrically connected between two adjacent columns.

[0020] The beneficial effects of this invention's multifunctional platform safety door structure are as follows: by setting counterweights at the platform door pillars to balance the lifting and lowering of the slider, the driving power for lifting and lowering the safety door is reduced. Moreover, the slider on the pillar lifts and lowers in a single stage, and pull ropes are pulled out from both sides of the slider at the same time, so that the pull ropes on both sides of the pillar lift and lower simultaneously. The pillar is balanced on both sides and is not prone to tilting or damage. Furthermore, the synchronous lifting and lowering of the pull ropes effectively prevents abnormal deviation of the slider, and the pull ropes have good horizontality and high safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of one embodiment of a multifunctional platform safety door structure according to the present invention;

[0022] Figure 2 This is an enlarged schematic diagram of point A in a multifunctional platform safety door structure of the present invention;

[0023] Figure 3 This is a side view of the sliding block structure of a multifunctional platform safety door structure of the present invention when it is lowered.

[0024] Figure 4This is a side view of the sliding block structure of a multifunctional platform safety door structure of the present invention when it is raised.

[0025] Figure 5 This is a schematic diagram of the counterweight block in one embodiment of a multifunctional platform safety door structure according to the present invention;

[0026] Figure 6 This is a top view schematic diagram of the installation structure of the counterweight block in one embodiment of a multifunctional platform safety door structure of the present invention;

[0027] Figure 7 This is a schematic diagram of a counterweight block with an additional block installed in one embodiment of a multifunctional platform safety door structure of the present invention.

[0028] Figure 8 This is a schematic diagram of the counterweight block in one embodiment of a multifunctional platform safety door structure according to the present invention;

[0029] Figure 9 This is a top view of a counterweight block with an additional block installed in one embodiment of a multifunctional platform safety door structure according to the present invention.

[0030] Figure 10 This is a top-view structural disassembly diagram of a counterweight block with an additional block installed in one embodiment of a multifunctional platform safety door structure of the present invention.

[0031] In the diagram: 1. Column, 11. Drive roller, 111. Ring tooth, 112. Gear, 113. Absolute encoder; 12. Slide rail column, 13. Base plate, 131. Anti-loosening bolt; 2. Transmission chain, 21. Mounting buckle, 211. Side plate, 212. Mounting bolt, 213. First nut, 31. Counterweight block, 311. First hole, 312. Third hole, 32. Additional block, 321. Second hole, 322. Fourth hole, 33. Reinforcing plate, 331. Reinforcing screw, 332. Second nut; 4. Slider, 41. Limiting rope, 42. Guide limiting block, 43. Hook, 44. Horizontal slide groove. Detailed Implementation

[0032] 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.

[0033] 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 invention.

[0034] 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.

[0035] In the description of this invention, 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 invention is in use. They are only for the convenience of describing this invention 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 invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] 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.

[0037] Techniques, methods, and systems known to a person skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the license specification.

[0038] Example 1: As Figures 1 to 10 The diagram shown is merely one embodiment of the present invention. A multifunctional platform safety gate structure includes a column 1, a slider 4 mounted on the column 1, and a pull rope connected to the slider 4. A drive roller 11 is mounted at the top of the column 1, and a transmission chain 2 is connected to the drive roller 11. One end of the transmission chain 2 is connected to the slider 4. Counterweights 31 are spaced apart on the transmission chain 2, and the number of counterweights 31 is at least two. The slider 4 is horizontally positioned such that both ends of the slider 4 extend to both sides of the column 1, and pull ropes are connected to both ends of the slider 4.

[0039] In this invention, a column 1 is set at the edge of the platform, and multiple columns 1 are spaced apart. A slider 4 is set on the column 1 and slides up and down. A pull rope is connected between two adjacent columns 1 through the slider 4, and the pull rope forms a pull rope safety gate. A drive roller 11 is set at the top of the column 1. The drive roller 11 is connected to a transmission chain 2. One end of the transmission chain 2 is connected to the slider 4. When the drive roller 11 drives the slider 4 to rise through the transmission chain 2, the safety gate is raised above the head of pedestrians. People waiting on the platform can pass under the pull rope to reach the rail transit train or get off the train to reach the platform. Conversely, when the slider 4 is lowered, it causes the pull rope to be lowered, which will separate the flow of people between the platform and the train and prevent people on the platform from falling off the platform or getting too close to the train and causing danger.

[0040] The drive roller 11 is connected to a drive motor for driving the drive roller 11 to rotate. That is, the drive motor drives the drive roller 11 to rotate, and the drive roller 11 drives the transmission chain 2 to transport materials, thereby causing the slider 4 to rise and fall. Figure 3 For example, when the motor rotates forward, it drives the drive roller 11 to rotate clockwise, the slider 4 rises, and the safety door opens; conversely, when the motor rotates backward, the safety door closes. It can be understood that the motor drives the slider 4 to rise and fall, thus completing the raising (opening) and lowering (closing) of the safety door.

[0041] Because the pull rope is long, the driving power of the pull rope and the slider is relatively high. In order to reduce the driving power of the drive roller 11, several counterweights 31 are arranged at intervals on the transmission chain 2. The counterweights 31 are transported along with the transmission chain 2. The main function of the counterweights 31 is to balance the gravity of the slider 4. For example, when the counterweights 31 are located on the side of the column 1 away from the slider 4, the slider 4 rises and the counterweights 31 fall. In this way, the gravity of the counterweights 31 balances the gravity of the slider 4 and the pull rope, thereby reducing the power of the drive motor to drive the pull rope slider 4 to rise and fall.

[0042] Of course, the number of counterweights 31 is at least two. In fact, multiple counterweights 31 are distributed on the transmission chain 2. By calculating the number and weight of the sliders 4 and the number and mass of the pull ropes, the number of counterweights 31 to be installed can be calculated when the mass of each counterweight 31 is known. Of course, counterweights 31 of different specifications can also be selected for installation. This allows the pull rope lifting to achieve optimal balance, effectively reducing the power of driving the safety door to lift, thereby reducing the overall platform power. The lifting drive power supply of the platform door can use a voltage below 36V, effectively reducing the probability of leakage and electric shock, and ensuring high safety.

[0043] Furthermore, the slider 4 is horizontally positioned, with both ends extending to the sides of the column 1. Each end of the slider 4 is connected to a pull rope, allowing the slider 4 to rise and fall directly on the column 1. Because the slider 4 is horizontally positioned, its length is not less than the width of the column 1, allowing both ends to extend to the sides of the column 1. Pull ropes can be extended from both sides of the slider 4. In this case, when the slider 4 rises and falls, the pull ropes on both sides rise and fall synchronously, balancing the tension on both sides of the pull ropes. This ensures balanced force on both sides of the column 1, preventing tilting. Therefore, the column 1 can be made thinner and taller while maintaining structural stability. There is no need for two-stage lifting; the taller column 1 can directly complete a single-stage lifting of the slider 4, still achieving sufficient opening height and stability. Moreover, without multi-stage lifting, the lifting and lowering of the slider 4 is more controllable, preventing the pull ropes from tilting due to uneven lifting speeds at both ends.

[0044] Finally, since slider 4 can be raised and lowered directly on column 1, there is no need to set too many lower limit structures at the bottom of column 1. When slider 4 slides to the bottom of column 1, it can be closer to the ground. That is, when the rope is lowered, the bottom of the rope gate is closer to the ground. After multiple tests, the bottom of the rope gate is no more than 15cm from the platform ground, which can effectively block intruders such as scooters, basketballs, footballs and out-of-control suitcases, etc., and effectively prevent these foreign objects from passing through the rope gate from the platform to the track and causing danger.

[0045] This invention provides a multifunctional platform safety door structure. By setting counterweights at the platform door pillars to balance the lifting and lowering of the slider, the driving power for lifting and lowering the safety door is reduced. Moreover, the slider on the pillar lifts and lowers in a single stage, and pull ropes are pulled out from both sides of the slider at the same time, so that the pull ropes on both sides of the pillar lift and lower simultaneously. The pillar is balanced on both sides and is not prone to tilting or damage. Furthermore, the synchronous lifting and lowering of the pull ropes effectively prevents abnormal deviation of the slider, and the pull ropes have good horizontality and high safety.

[0046] Example 2, still as Figures 1 to 10 As shown, this is only one embodiment of the present invention. Based on the first embodiment, in a multifunctional platform safety door structure of the present invention, an additional block 32 is provided on the counterweight 31, and the additional block 32 is provided on the side of the counterweight 31 away from the column 1.

[0047] This ensures that the counterweight 31, on which the additional block 32 is installed, is located on the side of the column 1 away from the slider 4;

[0048] When the slider 4 is raised to the upper limit, the counterweight 31 without the additional block 32 is located on the side of the column 1 away from the slider 4; and when the slider 4 is lowered to the lower limit, the counterweight 31 without the additional block 32 is located on the side of the column 1 closer to the slider 4.

[0049] Here, it is equivalent to dividing all the counterweight structures into constant-position counterweight blocks and variable-position counterweight blocks; the counterweight block 31 with the additional block 32 installed is the constant-position counterweight block; the counterweight block 31 without the additional block 32 installed is the variable-position counterweight block; when the transmission chain 2 is straightened, the constant-position counterweight block is set on the transmission chain 2 and located on the side of the variable-position counterweight block away from the slider 4.

[0050] Both the constant-position counterweight and the variable-position counterweight move with the transmission chain 2. The constant-position counterweight is not in a constant position, but is always located on the side of the column 1 away from the slider 4. The constant-position counterweight always moves up and down on the side of the column 1 away from the slider 4.

[0051] Conversely, the displacement counterweight refers to the counterweight whose position on the side of the column 1 changes as the slider 4 rises and falls. Specifically, when the slider 4 rises to its upper limit, the displacement counterweight is located on the side of the column 1 away from the slider 4 (e.g., Figure 4 (as shown); and when the slider 4 descends to the lower limit, all the displacement counterweights are located on the side of the column 1 closest to the slider 4 (as shown). Figure 3 (As shown).

[0052] Of course, there must be at least one constant counterweight and one variable counterweight.

[0053] This arrangement ensures that when the slider 4 is raised to the upper limit position, all the displacement counterweights are located on the side of the column 1 away from the slider 4; and when the slider 4 is lowered to the lower limit position, all the displacement counterweights are located on the side of the column 1 closer to the pull rope slider 4.

[0054] In this invention, there is also an intermediate state: when the slider 4 is between the upper limit and the lower limit, a portion of the displacement counterweights are located on the side of the column 1 away from the slider 4, and a portion of the displacement counterweights are located on the side of the column 1 close to the slider 4.

[0055] It should be noted that the total weight of all the constant-position counterweights is greater than the total weight of all the variable-position counterweights, so that no matter whether the slider 4 is raised or lowered, there is always a force on the side of the column 1 away from the slider 4 that can balance the weight of the slider 4 and the pull rope.

[0056] Moreover, the sum of the total mass of the displacement counterweight and the mass of the slider 4 (including the pull rope) is greater than the total weight of all the constant position counterweights, so that when the slider 4 is lowered to the lower limit, the constant position counterweight is insufficient to pull the slider 4 to the upper position, thus avoiding abnormal lifting of the slider 4 and abnormal opening of the safety door in case of motor failure.

[0057] Furthermore, the sum of the total weight of all the constant-position counterweights and the total weight of all the variable-position counterweights is greater than the mass of slider 4 (including the pull rope), so that when slider 4 is raised to the upper limit, the weight of slider 4 is insufficient to fall, thus preventing slider 4 from falling abnormally and the safety door from closing abnormally and crushing pedestrians in case of motor failure.

[0058] Example 3, still as Figures 1 to 10As shown, this is only one embodiment of the present invention. Based on any of the above embodiments, in a multifunctional platform safety door structure of the present invention, the transmission chain 2 is provided with a mounting buckle 21 for connecting with the counterweight block 31. The mounting buckle 21 is connected to the end face of the counterweight block 31. The mounting buckle 21 is provided with a side plate 211 for connecting with the side of the counterweight block 31 near the column 1. The side plate 211 is provided with a mounting bolt 212 for connecting with the counterweight block 31. The counterweight block 31 is provided with a first hole 311 for facilitating the passage of the mounting bolt 212. The additional block 32 is provided with a second hole 321 for facilitating the passage of the mounting bolt 212.

[0059] This allows the counterweight 31 to be installed on the transmission chain 2 via the mounting buckle 21. It is a detachable modular installation structure. When installing the mounting buckle 21, the counterweight 31 can be directly installed on the transmission chain 2 via the mounting buckle 21 and the mounting bolt 212. Alternatively, the counterweight 31 and the auxiliary block 32 can be installed on the transmission chain 2 simultaneously via the mounting buckle 21 and the mounting bolt 212.

[0060] In this invention, a first nut 213 is fitted onto the mounting bolt 212, and the number of the first nut 213 and the mounting bolt 212 is at least one.

[0061] If only the counterweight 31 is installed on the transmission chain 2, simply pass the mounting bolt 212 through the first hole 311 of the counterweight 31, and then tighten the first nut 213 on the side of the counterweight 31 away from the side plate 211.

[0062] If the counterweight 31 and the auxiliary block 32 are installed on the transmission chain 2 at the same time, the mounting bolt 212 needs to be passed through the first hole 311 of the counterweight 31 and the second hole 321 of the auxiliary block 32 in sequence, and then the first nut 213 is tightened on the side of the auxiliary block 32 away from the counterweight 31.

[0063] To ensure the stable installation of the additional block 32, a reinforcing plate 33 is provided on the side of the counterweight block 31 away from the additional block 32. The reinforcing plate 33 is provided with a reinforcing screw 331 extending towards the main plate 31. The counterweight block 31 is provided with a third hole 312 for the reinforcing screw 331 to pass through. The additional block 32 is provided with a fourth hole 322 for the reinforcing screw 331 to pass through.

[0064] In this invention, a second nut 332 is fitted onto the reinforcing screw 331, and the number of the second nut 332 and the reinforcing screw 331 is at least one.

[0065] Here, the reinforcing plate 33 and the reinforcing screw 331 are integrally formed, with a stable structure and easy installation. The reinforcing screw 331 of the reinforcing plate 33 passes through the third hole 312 on the counterweight block 31 and the fourth hole 322 on the auxiliary block 32 in sequence, and then the second nut 332 is tightened on the side of the counterweight block 31 away from the side plate 211.

[0066] Of course, the thickness of the reinforcing plate 33 should be relatively thin so as not to affect the column 1.

[0067] Example 4, still as Figures 1 to 10 As shown, this is only one embodiment of the present invention. Based on any of the above embodiments, in the multifunctional platform safety door structure of the present invention, the number of transmission chains 2 is two, and the two transmission chains 2 are respectively connected to the two ends of the counterweight block 31 through the mounting buckle 21 to prevent the counterweight block 31 from shaking.

[0068] Furthermore, there are at least two sliders 4, and a limit rope 41 is provided between two adjacent sliders 4; generally, there are 6 rope sliders 4, so that 6 ropes form a platform safety gate.

[0069] The column 1 has a slide rail column 12 on its side, and the slider 4 has a guide limiting block 42 for connecting with the slide rail column 12. The slider 4 has a guide limiting block 42 for connecting with the column 1 on its side. In fact, the edge of the column 1 has a cylindrical slide rail column 12. The guide limiting block 42 forms a C-shaped structure and is stuck on the cylindrical slide rail column 12, so that the slider 4 can only slide up and down along the slide rail column 12, and will not have abnormal displacement in the left, right and front and back directions.

[0070] The slider 4 is provided with a hook 43 for connecting to the pull rope at its end. The slider 4 is provided with a horizontal groove 44 for facilitating the sliding of the hook 43. The hook 43 can slide horizontally along the horizontal groove 44 on the slider 4. In other words, the hook 43 can be adjusted horizontally to adjust the tension of the pull rope and ensure a stable connection of the pull rope.

[0071] Furthermore, a base plate 13 is provided at the bottom end of the column 1, and anti-loosening bolts 131 are provided on the base plate 13.

[0072] Finally, the outer side of the drive roller 11 is provided with an annular tooth 111 for meshing with the transmission chain 2. The drive roller 11 is connected to a drive motor, and the output shaft of the drive motor is provided with a gear 112. The gear 112 is connected to an absolute encoder 113.

[0073] In this invention, the number of columns 1 is at least two, and the absolute encoders 113 between two adjacent columns 1 are electrically connected.

[0074] That is, the absolute encoders 113 between two adjacent columns 1 can exchange data. Before the pull rope is installed, the slider 4 is driven to rise and fall on the column 1 by the drive motor, thereby establishing a table between the reading of the absolute encoder 113 and the position of the slider 4. Then, when the slider 4 is raised and lowered to the limit, it is only necessary to limit the absolute encoder 113 on one column. Through the electrical connection between the absolute encoders 113 between two adjacent columns 1, the absolute encoders 113 on other columns 1 can be quickly limited.

[0075] For example, when slider 4 is located at the upper end of column 1, the absolute encoder 113 on the first column 1 reads 100, and the absolute encoder 113 on the second column 1 reads 200; when slider 4 is located at the lower end of column 1, the absolute encoder 113 on the first column 1 reads 0, and the absolute encoder 113 on the second column 1 reads 100. Therefore, if the absolute encoder 113 on the first column 1 is limited to 10-90, then the absolute encoder 113 on the second column 1 will be automatically limited to 110-190.

[0076] Furthermore, when it is necessary to level the ends of the pull rope, the absolute encoders 113 between the two adjacent columns 1 are electrically connected. The current reading of the absolute encoder 113 on the first column 1 is 45. It is only necessary to drive the drive motor on the second column 1 so that the current reading of the absolute encoder 113 on the second column 1 is 145. Then the sliders 4 on the first column 1 and the sliders 4 on the second column 1 will be at the same height. Then, by sliding the hook 43 horizontally along the horizontal slide groove 44, the pull rope is tightened. Then the pull rope between the first column 1 and the second column 1 is set horizontally.

[0077] This invention provides a multifunctional platform safety door structure. By setting counterweights at the platform door pillars to balance the lifting and lowering of the slider, the driving power for lifting and lowering the safety door is reduced. Moreover, the slider on the pillar lifts and lowers in a single stage, and pull ropes are pulled out from both sides of the slider at the same time, so that the pull ropes on both sides of the pillar lift and lower simultaneously. The pillar is balanced on both sides and is not prone to tilting or damage. Furthermore, the synchronous lifting and lowering of the pull ropes effectively prevents abnormal deviation of the slider, and the pull ropes have good horizontality and high safety.

[0078] This invention 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 invention should be included within the scope of protection of this invention.

Claims

1. A multifunctional platform safety door structure, characterized in that: The system includes a column (1), a slider (4) mounted on the column (1), and a pull rope connected to the slider (4). A drive roller (11) is mounted on the top of the column (1), and a transmission chain (2) is connected to the drive roller (11). One end of the transmission chain (2) is connected to the slider (4). Counterweights (31) are spaced apart on the transmission chain (2), and there are at least two counterweights (31). The slider (4) is horizontally positioned such that both ends of the slider (4) extend to both sides of the column (1). Pull ropes are connected to both ends of the slider (4). There are at least two sliders (4), and a limit rope (41) is connected between two adjacent sliders (4). An additional block (32) is provided on some of the counterweights (31), and the additional block (32) is provided on the side of the counterweights (31) away from the column (1); This ensures that the counterweight (31) on which the additional block (32) is installed is located on the side of the column (1) away from the slider (4); When the slider (4) is raised to the upper limit, the counterweight (31) without the additional block (32) is located on the side of the column (1) away from the slider (4); and when the slider (4) is lowered to the lower limit, the counterweight (31) without the additional block (32) is located on the side of the column (1) close to the slider (4).

2. The multifunctional platform safety door structure according to claim 1, characterized in that: The transmission chain (2) is provided with a mounting buckle (21) for connecting with the counterweight (31). The mounting buckle (21) is connected to the end face of the counterweight (31). The mounting buckle (21) is provided with a side plate (211) for connecting with the side of the counterweight (31) near the column (1). The side plate (211) is provided with a mounting bolt (212) for connecting with the counterweight (31). The counterweight (31) is provided with a first hole (311) for facilitating the passage of the mounting bolt (212). The auxiliary block (32) is provided with a second hole (321) for facilitating the passage of the mounting bolt (212).

3. The multifunctional platform safety door structure according to claim 2, characterized in that: A reinforcing plate (33) is provided on the side of the counterweight (31) away from the additional block (32). A reinforcing screw (331) extending toward the counterweight (31) is provided on the reinforcing plate (33). A third hole (312) is provided on the counterweight (31) to facilitate the passage of the reinforcing screw (331). A fourth hole (322) is provided on the additional block (32) to facilitate the passage of the reinforcing screw (331).

4. The multifunctional platform safety door structure according to claim 3, characterized in that: The mounting bolt (212) is fitted with a first nut (213), and the number of the first nut (213) and the mounting bolt (212) is at least one; the reinforcing screw (331) is fitted with a second nut (332), and the number of the second nut (332) and the reinforcing screw (331) is at least one.

5. The multifunctional platform safety door structure according to claim 1, characterized in that: The drive roller (11) is provided with an annular tooth (111) for meshing with the transmission chain (2) on its outer side. The drive roller (11) is connected to a drive motor. The output shaft of the drive motor is provided with a gear (112). The gear (112) is connected to an absolute encoder (113).

6. The multifunctional platform safety door structure according to claim 2, characterized in that: The number of transmission chains (2) is two, and the two transmission chains (2) are respectively connected to the two ends of the counterweight (31) through the mounting buckle (21).

7. The multifunctional platform safety door structure according to claim 1, characterized in that: The column (1) is provided with a slide rail column (12) on its side. The slider (4) is provided with a guide limit block (42) for connecting with the slide rail column (12). The end of the slider (4) is provided with a hook (43) for connecting with the pull rope. The slider (4) is provided with a horizontal groove (44) for facilitating the sliding of the hook (43).

8. A multifunctional platform safety door structure according to claim 1, characterized in that: The bottom end of the column (1) is provided with a base plate (13), and the base plate (13) is provided with anti-loosening bolts (131).

9. A multifunctional platform safety door structure according to claim 5, characterized in that: The number of columns (1) is at least two, and an absolute encoder (113) is electrically connected between two adjacent columns (1).

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