Lifting rope type platform safety door multi-stage lifting movement mechanism

Abstract

The utility model relates to the field of railway platform protection equipment, in particular to a lifting rope type platform safety door multi-stage lifting movement mechanism which comprises a platform safety door mounting frame, a lifting connecting arm, a lifting control device, a lifting linkage device, a lifting rope, a plurality of lifting rope mounting devices and a plurality of positioning separators. The lifting control device is arranged on the platform safety door mounting frame, and the lifting connecting arm is arranged on the platform safety door mounting frame in a lifting mode through the lifting control device. The plurality of positioning separators are uniformly arranged on the lifting connecting arm, and the outward protruding lengths of the plurality of positioning separators are gradually reduced from the bottom of the lifting connecting arm to the top; the multiple lifting rope installers are arranged on the lifting connecting arm in a lifting mode through a lifting linkage device, the multiple lifting rope installers are each provided with an inner concave opening, the inner concave depths of the inner concave openings of the multiple lifting rope installers are gradually reduced from the bottom of the lifting connecting arm to the upper portion, and when the lifting rope installers descend, the lifting rope installers are arranged on the lifting connecting arm in a lifting mode. The layer-by-layer lifting rope installers and the layer-by-layer positioning separators are mutually clamped; the lifting rope installer is provided with a steering locking device used for fixedly installing the lifting rope.

Description

Technical Field

[0001] This utility model relates to the field of railway platform protection equipment, and more specifically, to a multi-stage lifting motion mechanism for a lifting rope type platform safety door. Background Technology

[0002] Currently, in order to prevent passengers from crossing the safety line and entering the train tracks, platform screen doors with lifting ropes are generally installed in railway platforms. Only after the train arrives at the station and comes to a complete stop will the staff control the lifting rope platform screen doors to open, and only then can passengers cross the platform screen doors to get on and off the train.

[0003] However, the lifting mechanisms of current platform screen doors are very complex, expensive and inconvenient to maintain. In addition, the lifting ropes of platform screen doors, in particular, are often difficult to install and difficult to adjust the tension of. Even after the lifting ropes are installed, they may loosen.

[0004] Therefore, it is necessary to propose a multi-stage lifting mechanism for lifting rope platform safety doors to solve the above problems. Utility Model Content

[0005] To overcome at least one of the defects (deficiencies) of the prior art, this utility model provides a multi-stage lifting motion mechanism for a lifting rope type platform safety door.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a multi-stage lifting motion mechanism for a platform safety door with lifting rope, including a platform safety door mounting frame, a lifting connecting arm, a lifting control device, a lifting linkage device, a lifting rope, multiple lifting rope installers and multiple positioning separators;

[0007] The lifting control device is installed on the platform safety door mounting frame, and the lifting connecting arm is installed on the platform safety door mounting frame in a way that allows it to be raised and lowered via the lifting control device.

[0008] Multiple positioning dividers are evenly arranged on the lifting connecting arm, and the length of the multiple positioning dividers protruding outward gradually decreases from the bottom of the lifting connecting arm upward.

[0009] Multiple lifting rope installers are mounted on the lifting connecting arm in a lifting linkage device. Each of the multiple lifting rope installers has an inner recess. The inner depth of the inner recess of the multiple lifting rope installers gradually decreases from the bottom of the lifting connecting arm upwards. When the lifting rope installers descend, the lifting rope installers layer by layer are locked together with the positioning separators layer by layer.

[0010] The lifting rope installer is equipped with a steering locking device for fixing the lifting rope. In this invention, the lifting connecting arm is movably mounted on the platform safety door mounting frame via a lifting control device, while the lifting rope installer is movably mounted on the lifting connecting arm via a lifting linkage device. Therefore, the lifting rope can achieve multi-stage lifting with a simple structure. In addition, since the lifting rope installer is equipped with a steering locking device for fixing the lifting rope, it can achieve quick installation during the lifting rope installation process, while also adjusting the tension of the lifting rope after installation, and preventing the lifting rope from loosening after long-term use.

[0011] Furthermore, the steering locking device includes a rope guide seat, a steering shaft, a rope presser, a ratchet anti-slip device, and a rope winding base mounted on the lifting rope installer;

[0012] The rope-guiding seat is located at the inlet end of the rope-winding base, and the steering shaft is located inside the rope-winding base;

[0013] The rope presser is rotatably mounted on the rope guide seat. The rope presser is provided with a first rope threading hole, a second rope threading hole and a rope pressing hole. The lifting rope is threaded through the rope guide seat, and after being turned by the steering shaft, it is threaded through the first rope threading hole into the rope presser and then out through the second rope threading hole. The rope pressing hole is provided with a rope pressing screw, and the rope pressing screw is pressed into the lifting rope.

[0014] The ratchet anti-slip device is installed on the rope presser. By placing the rope presser inside the rope winding base, the lifting rope can be wound and its tension adjusted by rotating the rope presser. The first rope hole, the second rope hole, the rope pressing hole, and the rope pressing screw facilitate the secure fixing of the lifting rope inside the rope presser. The rope straightening seat can straighten the lifting rope, making it easier to guide the lifting rope in. The ratchet anti-slip device can prevent the rope presser from rotating in the opposite direction, which would cause the lifting rope to loosen.

[0015] Furthermore, the ratchet anti-slip device includes a ratchet, a pawl, a pawl shaft, a first positioning hole, a second positioning hole, and a connecting spring;

[0016] The ratchet is sleeved on the rope presser, and the pawl is mounted on the rope winding base via a pawl pivot. The pawl and the ratchet are engaged with each other.

[0017] The first positioning hole is set on the pawl, and the second positioning hole is set on the rope winding base. One end of the connecting spring is connected to the first positioning hole, and the other end is connected to the second positioning hole after passing around the pawl shaft. The ratchet and pawl can effectively prevent the rope presser from rotating in the opposite direction, thus effectively solving the problem of the lifting rope becoming loose. The connecting spring also allows the pawl to be better engaged on the ratchet.

[0018] Furthermore, the lifting control device includes a lifting control motor, a first bevel gear, a second bevel gear, a lifting connecting shaft, a first lifting control gear, a second lifting control gear, a chain, and a lifting moving base;

[0019] The lifting control motor is mounted on the platform safety door mounting frame, and the first bevel gear is connected to the lifting control motor;

[0020] The second bevel gear meshes with the first bevel gear on one side, and is connected to the first lifting control gear on the other side via a lifting connecting shaft;

[0021] The chain is sleeved on the outside of the first lifting control gear and the second lifting control gear, and the lifting moving base is set on the chain;

[0022] The lifting connecting arm is mounted on the lifting moving base. The lifting control motor can sequentially drive the first bevel gear, the second bevel gear, the lifting connecting shaft, the first lifting control gear, and the second lifting control gear to rotate, thereby causing the chain to move up and down. Since the lifting moving base is mounted on the chain and the lifting connecting arm is mounted on the lifting moving base, the driving of the lifting control motor can control the lifting and lowering of the lifting connecting arm.

[0023] Furthermore, the chain is equipped with a counterweight, which is located on both sides of the chain, along with the lifting and moving base. The counterweight allows for better control of the lifting and lowering of the lifting connecting arm.

[0024] Furthermore, the lifting connecting arm is provided with weight-reducing perforations. By setting the perforations, the weight of the lifting connecting arm can be effectively reduced, thereby facilitating the control of the lifting connecting arm to lift and lower.

[0025] Furthermore, the lifting linkage device includes a lifting control motor, a main lifting drive wheel, a secondary lifting drive wheel, a lifting belt, a lifting guide rail, and a lifting support block;

[0026] The lifting control motor is mounted on the lifting connecting arm, and the lifting main drive wheel is connected to the lifting control motor;

[0027] The inner side of the lifting belt has teeth, and the lifting belt is sleeved on the outside of the main lifting drive wheel and the auxiliary lifting drive wheel;

[0028] The lifting guide rail is mounted on the lifting connecting arm, and the lifting rope installer is slidably mounted on the lifting guide rail.

[0029] The lifting support block is mounted on the lifting belt. When the lifting support block is not engaged with the lifting rope installer, the multiple lifting rope installers are respectively mounted on the corresponding positioning dividers. When the lifting control motor rotates, the lifting support block engages with the lowest lifting rope installer and sequentially pushes the multiple lifting rope installers upward. Since the lifting main drive wheel and the lifting auxiliary drive wheel are connected to each other via the lifting belt, the lifting control motor drives the lifting main drive wheel to rotate, thereby controlling the lifting belt for lifting and lowering. Because the lifting support block is mounted on the lifting belt, after moving upward, it engages with the lowest lifting rope installer. Since each lifting rope installer has an indentation, the depth of the indentation of the multiple lifting rope installers gradually decreases from the bottom of the lifting connecting arm upward. Furthermore, the length of the protruding positioning dividers gradually decreases from the bottom of the lifting connecting arm upwards. Therefore, as the lifting control motor rotates, the lifting support block continuously pushes the lowest-level lifting rope installer upwards. The top of the lowest-level lifting rope installer contacts the bottom of the upper-level lifting rope installer. As the lifting control motor rotates, the lower-level lifting rope installer passes over the upper-level positioning divider. At this point, the lower-level lifting rope installer does not contact the upper-level positioning divider. Therefore, multiple lifting rope installers can be continuously driven upwards until all lifting rope installers are stacked on the top of the lifting connecting arm. When the lifting support block moves downwards under the drive of the lifting control motor, the lifting rope installers and positioning dividers layer by layer interlock, thereby ensuring that the lifting ropes are evenly distributed on the lifting connecting arm.

[0030] Furthermore, the lifting rope is made of carbon fiber. In practical applications, the lifting rope can also be made of other materials, which are all alternatives that are easy for those skilled in the art to conceive of.

[0031] Furthermore, the lifting connecting arm is set on one or both sides of the platform safety door mounting frame. In practical applications, the lifting connecting arm can be set on one or both sides of the platform safety door mounting frame according to the installation position of the platform safety door mounting frame. These are all solutions that are easy for those skilled in the art to think of.

[0032] Furthermore, the platform safety door mounting bracket and / or lifting connecting arm are equipped with infrared through-beam sensors. By installing infrared through-beam sensors on the platform safety door mounting bracket and / or lifting connecting arm, it is convenient to detect passengers or luggage passing through the platform safety door, and at the same time, it enables the back-end operators to better control the lifting of the lifting connecting arm and lifting rope.

[0033] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0034] This utility model discloses a multi-stage lifting mechanism for a platform safety gate using a lifting rope. The lifting connecting arm is movably mounted on the platform safety gate mounting frame via a lifting control device, while the lifting rope installer is movably mounted on the lifting connecting arm via a lifting linkage device. Therefore, the lifting rope can achieve multi-stage lifting with a simple structure. In addition, since the lifting rope installer is equipped with a steering locking device for fixing the lifting rope, it can achieve rapid installation during the installation process, while also adjusting the tension of the lifting rope after installation, and preventing the lifting rope from loosening after long-term use. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the lifting connecting arm at its first angle when it is not raised in this utility model.

[0036] Figure 2 This is a structural schematic diagram of the lifting connecting arm at the second angle when it is not raised in this utility model.

[0037] Figure 3 This is a structural schematic diagram of the lifting connecting arm at a third angle when it is not raised in this utility model.

[0038] Figure 4 This is a structural schematic diagram of the lifting connecting arm at the first angle when it is raised in this utility model.

[0039] Figure 5 This is a structural schematic diagram of the lifting connecting arm at the second angle when it is raised in this utility model.

[0040] Figure 6 This is a structural schematic diagram of the lifting connecting arm at the third angle when it is raised in this utility model.

[0041] Figure 7 This is a partial enlarged view of the lifting control device in this utility model.

[0042] Figure 8 This is a partially enlarged view of the steering locking device installed on the lifting connecting arm in this utility model.

[0043] Figure 9 This is a schematic diagram of the steering locking device at the first angle in this utility model.

[0044] Figure 10 This is a structural schematic diagram of the steering locking device at the second angle in this utility model.

[0045] Figure 11 This is a structural schematic diagram of the steering locking device at the third angle in this utility model.

[0046] Figure 12This is a structural schematic diagram of the steering locking device at the fourth angle in this utility model.

[0047] In the diagram, 1 is the platform safety door mounting bracket, 2 is the lifting connecting arm, 3 is the lifting control device, 4 is the lifting linkage device, 5 is the lifting rope, 6 is the lifting rope installer, 7 is the positioning divider, 8 is the recess, 9 is the steering locking device, 10 is the rope guide seat, 11 is the steering shaft, 12 is the rope presser, 13 is the ratchet anti-slip device, 14 is the rope winding base, 15 is the first rope threading hole, 16 is the second rope threading hole, 17 is the rope pressing hole, 18 is the rope pressing screw, 19 is the ratchet, 20 is the pawl, 21 is the pawl rotating shaft, and 22 is the first fixed... 23 is the second positioning hole, 24 is the connecting spring, 25 is the lifting control motor, 26 is the first bevel gear, 27 is the second bevel gear, 28 is the lifting connecting shaft, 29 is the first lifting control gear, 30 is the second lifting control gear, 31 is the chain, 32 is the lifting moving base, 33 is the counterweight, 34 is the hollow hole, 35 is the lifting control motor, 36 is the lifting main drive wheel, 37 is the lifting auxiliary drive wheel, 38 is the lifting belt, 39 is the lifting guide rail, 40 is the lifting support block, and 41 is the locking tooth. Detailed Implementation

[0048] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0050] like Figure 1-8As shown, a multi-stage lifting mechanism for a platform screen door using a lifting rope includes a platform screen door mounting frame 1, a lifting connecting arm 2, a lifting control device 3, a lifting linkage device 4, a lifting rope 5, multiple lifting rope installers 6, and multiple positioning dividers 7. The lifting control device 3 is mounted on the platform screen door mounting frame 1, and the lifting connecting arm 2 is movably mounted on the platform screen door mounting frame 1 via the lifting control device 3. The multiple positioning dividers 7 are evenly distributed on the lifting connecting arm 2, and the length of the protruding portion of the multiple positioning dividers 7 gradually decreases from the bottom of the lifting connecting arm 2 upwards. The multiple lifting rope installers 6 are movably mounted on the lifting connecting arm 2 via the lifting linkage device 4, and each of the multiple lifting rope installers 6 has an inner recess 8, the depth of which gradually increases from the bottom of the lifting connecting arm 2 upwards. To reduce the risk of injury, when the lifting rope installer 6 descends, the layer-by-layer lifting rope installer 6 and the layer-by-layer positioning separator 7 interlock with each other. The lifting rope installer 6 is equipped with a steering locking device 9 for fixing the lifting rope 5. In this utility model, the lifting connecting arm 2 is movably mounted on the platform safety door mounting frame 1 via the lifting control device 3, while the lifting rope installer 6 is movably mounted on the lifting connecting arm 2 via the lifting linkage device 4. Therefore, the lifting rope 5 can achieve multi-stage lifting with a simple structure. In addition, since the lifting rope installer 6 is equipped with a steering locking device 9 for fixing the lifting rope 5, the tension of the lifting rope 5 can be adjusted after installation while the lifting rope 5 is installed quickly, and the lifting rope 5 can be prevented from loosening after long-term use.

[0051] like Figure 9-12As shown, the steering locking device 9 includes a rope guide seat 10, a steering shaft 11, a rope presser 12, a ratchet anti-slip device 13, and a rope winding base 14 mounted on the lifting rope mount 6. The rope guide seat 10 is located at the inlet end of the rope winding base 14, and the steering shaft 11 is located inside the rope winding base 14. The rope presser 12 is rotatably mounted on the rope guide seat 10, and the rope presser 12 is provided with a first rope threading hole 15, a second rope threading hole 16, and a rope pressing hole 17. The lifting rope 5 passes through the rope guide seat 10, and after being turned by the steering shaft 11, it is then driven by the first rope threading hole 15, a second rope threading hole 16, and a rope pressing hole 17. After the rope threading hole 15 is inserted into the rope presser 12, it exits through the second rope threading hole 16. The rope presser hole 17 is equipped with a rope presser screw 18, which presses against the lifting rope 5. A ratchet anti-slip device 13 is installed on the rope presser 12. By placing the rope presser 12 inside the rope winding base 14, the rotation of the rope presser 12 can realize the winding and tension adjustment of the lifting rope 5. The arrangement of the first rope threading hole 15, the second rope threading hole 16, the rope presser hole 17, and the rope presser screw 18 facilitates the secure fixing of the lifting rope 5. Inside the rope presser 12, the rope guide seat 10 straightens the lifting rope 5, facilitating its insertion. The ratchet anti-slip device 13 prevents the rope presser 12 from rotating in the opposite direction, thus preventing the lifting rope 5 from becoming loose. The ratchet anti-slip device 13 includes a ratchet 19, a pawl 20, a pawl shaft 21, a first positioning hole 22, a second positioning hole 23, and a connecting spring 24. The ratchet 19 is sleeved on the rope presser 12, and the pawl 20 is mounted on the rope winding base 14 via the pawl shaft 21. The pawl 20 and the ratchet 19 are connected. 9. Mutual locking; the first positioning hole 22 is set on the pawl 20, and the second positioning hole 23 is set on the rope winding base 14. One end of the connecting spring 24 is connected to the first positioning hole 22, and the other end is connected to the second positioning hole 23 after passing through the pawl shaft 21. The ratchet 19 and the pawl 20 can effectively prevent the rope presser 12 from rotating in the opposite direction, thus effectively solving the problem of the lifting rope 5 becoming loose. The setting of the connecting spring 24 allows the pawl 20 to be better locked on the ratchet 19.

[0052] In this utility model, the lifting control device 3 includes a lifting control motor 25, a first bevel gear 26, a second bevel gear 27, a lifting connecting shaft 28, a first lifting control gear 29, a second lifting control gear 30, a chain 31, and a lifting moving base 32. The lifting control motor 25 is mounted on the platform safety door mounting bracket 1, and the first bevel gear 26 is connected to the lifting control motor 25. One side of the second bevel gear 27 meshes with the first bevel gear 26, and the other side is connected to the first lifting control gear 29 via the lifting connecting shaft 28. The chain 31 is sleeved on the outside of the first lifting control gear 29 and the second lifting control gear 30, and the lifting moving base 32 is mounted on the chain 31. The lifting connecting arm 2 is mounted on the lifting moving base 32, and the lifting control motor 25 can sequentially drive the first bevel gear 26, the first bevel gear 27, the second bevel gear 28, the second lifting control gear 29, the second lifting control gear 30, the chain 31, and the lifting moving base 32. The rotation of the two bevel gears 27, the lifting connecting shaft 28, the first lifting control gear 29, and the second lifting control gear 30 causes the chain 31 to move up and down. Since the lifting moving base 32 is mounted on the chain 31 and the lifting connecting arm 2 is mounted on the lifting moving base 32, the drive of the lifting control motor 25 can control the lifting and lowering of the lifting connecting arm 2. In this utility model, a counterweight 33 is provided on the chain 31, and the counterweight 33 and the lifting moving base 32 are respectively located on both sides of the chain 31. The counterweight 33 can better control the lifting and lowering of the lifting connecting arm 2. In addition, a weight-reducing hollow hole 34 is provided on the lifting connecting arm 2. The hollow hole 34 can effectively reduce the weight of the lifting connecting arm 2, thereby facilitating the control of the lifting and lowering of the lifting connecting arm 2.

[0053] In this utility model, the lifting linkage device 4 includes a lifting control motor 35, a main lifting drive wheel 36, a secondary lifting drive wheel 37, a lifting belt 38, a lifting guide rail 39, and a lifting support block 40. The lifting control motor 35 is mounted on the lifting connecting arm 2, and the main lifting drive wheel 36 is connected to the lifting control motor 35. The inner side of the lifting belt 38 has teeth 41, and the lifting belt 38 is sleeved on the outer side of the main lifting drive wheel 36 and the secondary lifting drive wheel 37. The lifting guide rail 39 is mounted on the lifting connecting arm 2, and the lifting rope installer 6 is slidably mounted on the lifting guide rail 39. The lifting support block 40... The lifting support block 40 is mounted on the lifting belt 38. When the lifting support block 40 is not engaged with the lifting rope installer 6, the multiple lifting rope installers 6 are respectively mounted on the corresponding multiple positioning separators 7. When the lifting control motor 35 rotates, the lifting support block 40 engages with the lowest lifting rope installer 6 and sequentially pushes the multiple lifting rope installers 6 upward. Since the lifting main drive wheel 36 and the lifting secondary drive wheel 37 are connected to each other through the lifting belt 38, the lifting control motor 35 drives the lifting main drive wheel 36 to rotate, which in turn drives the lifting belt 38 to perform lifting control. The lifting support block 40 is mounted on the lifting belt 38. Therefore, after the lifting support block 40 moves upward, it will abut against the lowest lifting rope installer 6. Since each lifting rope installer 6 has a recess 8, the depth of the recess 8 of multiple lifting rope installers 6 gradually decreases from the bottom of the lifting connecting arm 2 upwards, and the length of the outward protrusion of multiple positioning separators 7 gradually decreases from the bottom of the lifting connecting arm 2 upwards. Therefore, as the lifting control motor 35 rotates, the lifting support block 40 will continuously push the lowest lifting rope installer 6 upwards, and the top of the lowest lifting rope installer 6 will abut against the upper layer. The bottom of the lifting rope installer 6 is in contact with the top of the lifting control motor 35. As the lifting control motor 35 rotates, the lower lifting rope installer 6 will pass over the upper positioning separator 7. At this time, the lower lifting rope installer 6 will not contact the upper positioning separator 7. Therefore, multiple lifting rope installers 6 can be continuously driven to move upward until all lifting rope installers 6 are stacked on the top of the lifting connecting arm 2. When the lifting support block 40 moves downward under the drive of the lifting control motor 35, the layer-by-layer lifting rope installers 6 and the layer-by-layer positioning separators 7 are locked together, so that the lifting rope 5 is evenly distributed on the lifting connecting arm 2.

[0054] In this invention, the lifting rope 5 is made of carbon fiber. In practical applications, the lifting rope 5 can also be made of other materials, which are all alternative solutions that are easy for those skilled in the art to conceive of. The lifting connecting arm 2 is set on one or both sides of the platform safety door mounting frame 1. In practical applications, the lifting connecting arm 2 can be set on one or both sides of the platform safety door mounting frame 1 according to the installation position of the platform safety door mounting frame 1. These are all solutions that are easy for those skilled in the art to conceive of. Infrared beam sensors are provided on the platform safety door mounting frame 1 and / or the lifting connecting arm 2. By using the infrared beam sensors provided on the platform safety door mounting frame 1 and / or the lifting connecting arm 2, it is convenient to detect passengers or luggage passing through the platform safety door, and at the same time, it enables the back-end operators to better control the lifting of the lifting connecting arm 2 and the lifting rope 5.

[0055] Example

[0056] In this embodiment, the platform safety door mounting frame is set on both sides of the platform safety door, and the lifting control device is set on the platform safety door mounting frame. The lifting connecting arm is set on the platform safety door mounting frame in a way that can be raised and lowered by the lifting control device. Therefore, the first-level lifting transmission control is realized between the lifting connecting arm and the platform safety door mounting frame.

[0057] In addition, multiple positioning separators are provided on the lifting connecting arm, and the length of the multiple positioning separators protruding outwards gradually decreases from the bottom of the lifting connecting arm upwards. Multiple lifting rope installers are then mounted on the lifting connecting arm in a lifting linkage device. Each of the multiple lifting rope installers has an inner recess, and the inner depth of the inner recess of the multiple lifting rope installers gradually decreases from the bottom of the lifting connecting arm upwards. When the lifting rope installers descend, the layer-by-layer lifting rope installers and the layer-by-layer positioning separators engage with each other. In this way, the second-level lifting transmission control is realized.

[0058] Because the main lifting drive wheel is connected to the lifting control motor, and the lifting belt has teeth on its inner side, the lifting belt is fitted around the outside of the main lifting drive wheel and the auxiliary lifting drive wheel. The lifting guide rail is mounted on the lifting connecting arm, and the lifting rope installers are slidably mounted on the lifting guide rail. The lifting support block is mounted on the lifting belt. When the lifting support block is not engaged with the lifting rope installers, multiple lifting rope installers are respectively mounted on their corresponding positioning dividers. When the lifting control motor rotates, the lifting support block engages with the lowest-level lifting rope installer, sequentially pushing multiple lifting rope installers upwards. Since the main lifting drive wheel and the auxiliary lifting drive wheel are connected by the lifting belt, therefore, through... The lifting control motor drives the main drive wheel to rotate, which in turn drives the lifting belt for lifting control. Since the lifting support block is mounted on the lifting belt, it moves upward and abuts against the lowest lifting rope installer. Because each lifting rope installer has a recessed opening, the depth of these recesses gradually decreases from the bottom of the lifting connecting arm upwards, and the outward protrusion of the positioning dividers also gradually decreases from the bottom of the lifting connecting arm upwards. Therefore, as the lifting control motor rotates, the lifting support block continuously pushes the lowest lifting rope installer upwards, until the top of the lowest lifting rope installer aligns with the bottom of the upper lifting rope installer. The lower lifting rope installers will pass over the upper positioning separators as the lifting control motor rotates. At this point, the lower lifting rope installers will not contact the upper positioning separators, thus continuously driving multiple lifting rope installers upwards until all lifting rope installers are stacked on top of the lifting connecting arm. When the lifting support block moves downwards under the drive of the lifting control motor, the layer-by-layer lifting rope installers and layer-by-layer positioning separators interlock, ensuring the lifting ropes are evenly distributed on the lifting connecting arm. Furthermore, to achieve anti-tipping control and tension adjustment of the lifting ropes and facilitate installation, the rope presser is equipped with a first rope threading hole, a second rope threading hole, and a rope pressing hole. The rope is inserted through the rope guide seat, rotated by the steering shaft, and then passed through the first rope threading hole into the rope presser, before exiting through the second rope threading hole. Since a rope presser screw is provided in the rope presser hole, it can be used to press the lifting rope together. Because the ratchet anti-slip device is located on the rope presser, and the rope presser is placed inside the rope winding base, the rotation of the rope presser allows for the winding and tension adjustment of the lifting rope. The first rope threading hole, the second rope threading hole, the rope presser hole, and the rope presser screw ensure that the lifting rope is securely fixed inside the rope presser. The rope guide seat straightens the lifting rope, facilitating its insertion, while the ratchet anti-slip device prevents the rope presser from rotating in the opposite direction, which could cause the lifting rope to loosen.

[0059] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of this utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A multi-stage lifting mechanism for a platform safety door using a lifting rope, comprising a platform safety door mounting frame, a lifting connecting arm, a lifting control device, a lifting linkage device, a lifting rope, multiple lifting rope installers, and multiple positioning separators, characterized in that: The lifting control device is installed on the platform safety door mounting frame, and the lifting connecting arm is installed on the platform safety door mounting frame in a way that allows it to be raised and lowered via the lifting control device. Multiple positioning dividers are evenly arranged on the lifting connecting arm, and the length of the multiple positioning dividers protruding outward gradually decreases from the bottom of the lifting connecting arm upward. Multiple lifting rope installers are mounted on the lifting connecting arm in a lifting linkage device. Each of the multiple lifting rope installers has an inner recess. The inner depth of the inner recess of the multiple lifting rope installers gradually decreases from the bottom of the lifting connecting arm upwards. When the lifting rope installers descend, the lifting rope installers layer by layer are locked together with the positioning separators layer by layer. The lifting rope installer is equipped with a steering locking device for fixing the lifting rope.

2. The multi-stage lift motion mechanism for lift-roped platform safety doors according to claim 1, characterized in that: The steering locking device includes a rope guide seat, a steering shaft, a rope presser, a ratchet anti-slip device, and a rope winding base installed on the lifting rope installer. The rope-guiding seat is located at the inlet end of the rope-winding base, and the steering shaft is located inside the rope-winding base; The rope presser is rotatably mounted on the rope guide seat. The rope presser is provided with a first rope threading hole, a second rope threading hole and a rope pressing hole. The lifting rope is threaded through the rope guide seat, and after being turned by the steering shaft, it is threaded through the first rope threading hole into the rope presser and then out through the second rope threading hole. The rope pressing hole is provided with a rope pressing screw, and the rope pressing screw is pressed into the lifting rope. The ratchet anti-slip device is mounted on the rope presser.

3. The multi-stage lifting mechanism for the lifting rope platform safety door according to claim 2, characterized in that: The ratchet anti-slip device includes a ratchet, a pawl, a pawl shaft, a first positioning hole, a second positioning hole, and a connecting spring; The ratchet is sleeved on the rope presser, and the pawl is mounted on the rope winding base via a pawl pivot. The pawl and the ratchet are engaged with each other. The first positioning hole is located on the pawl, and the second positioning hole is located on the rope base. One end of the connecting spring is connected to the first positioning hole, and the other end is connected to the second positioning hole after passing through the pawl shaft.

4. The multi-stage lifting mechanism for a platform safety door with lifting rope as described in claim 1, characterized in that: The lifting control device includes a lifting control motor, a first bevel gear, a second bevel gear, a lifting connecting shaft, a first lifting control gear, a second lifting control gear, a chain, and a lifting moving base; The lifting control motor is mounted on the platform safety door mounting frame, and the first bevel gear is connected to the lifting control motor; The second bevel gear meshes with the first bevel gear on one side, and is connected to the first lifting control gear on the other side via a lifting connecting shaft; The chain is sleeved on the outside of the first lifting control gear and the second lifting control gear, and the lifting moving base is set on the chain; The lifting connecting arm is mounted on the lifting and moving base.

5. The multi-stage lift motion mechanism for lift-roped platform safety doors according to claim 4, characterized in that: The chain is equipped with a counterweight, which is located on one side of the chain, and the counterweight and the lifting and moving base are respectively located on the other side of the chain.

6. The multi-stage lift motion mechanism for lift-roped platform safety doors according to claim 4, characterized in that: The lifting connecting arm is provided with a weight-reducing perforation.

7. The multi-stage lift motion mechanism for lift-rope platform safety doors according to claim 1, characterized in that: The lifting linkage device includes a lifting control motor, a lifting main drive wheel, a lifting auxiliary drive wheel, a lifting belt, a lifting guide rail, and a lifting support block; The lifting control motor is mounted on the lifting connecting arm, and the lifting main drive wheel is connected to the lifting control motor; The inner side of the lifting belt has teeth, and the lifting belt is sleeved on the outside of the main lifting drive wheel and the auxiliary lifting drive wheel; The lifting guide rail is mounted on the lifting connecting arm, and the lifting rope installer is slidably mounted on the lifting guide rail. The lifting support block is set on the lifting belt. When the lifting support block is not engaged with the lifting rope installer, the multiple lifting rope installers are respectively set on the corresponding multiple positioning separators. When the lifting control motor rotates, the lifting support block engages with the lowest lifting rope installer and sequentially pushes the multiple lifting rope installers upward.

8. The multi-stage lift motion mechanism for lift-rope platform safety doors according to claim 1, characterized in that: The lifting rope is made of carbon fiber.

9. The multi-stage lift motion mechanism for lift-rope platform safety doors according to claim 1, characterized in that: The lifting connecting arm is installed on one or both sides of the platform safety door mounting frame.

10. The multi-stage lift motion mechanism for lift-rope platform safety doors according to claim 1, characterized in that: Infrared through-beam sensors are installed on the platform safety door mounting bracket and / or lifting connecting arm.

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