Machine core structure for lifting type platform door

Abstract

The utility model relates to a machine core structure for a lifting type platform door, and belongs to the technical field of platform isolation doors. The machine core structure comprises a rack, a transmission mechanism and a lifting assembly, and the transmission mechanism and the lifting assembly are both installed in the rack; the lifting assembly comprises a lifting bottom plate, a synchronous belt, an upper synchronous wheel, a lower synchronous wheel, a fixed pull rope fixing plate and a plurality of movable pull rope fixing plates. The lifting assembly and the balance load balancing weight are arranged in the mode that the weight of the lifting assembly is similar to that of the balance load balancing weight, so that the force needing to drive lifting is very small, the bearing capacity of the whole transmission is greatly reduced, faster movement can be achieved, and almost no noise exists in the movement process. And meanwhile, under the condition of power failure, lifting of the lifting assembly can be easily achieved, so that the emergency channel can be rapidly and automatically opened under the condition of complete power failure.

Description

Technical Field

[0001] The present application relates to the technical field of platform isolation doors, and in particular to a movement structure for a lifting platform door. Background Art

[0002] Platform door equipment is widely used in subway, light rail and BRT industries, mainly used to isolate passengers and vehicles.

[0003] In high-speed railways, due to the large variety of vehicle types and the complex and changeable door opening positions, conventional platform doors cannot guarantee full compatibility between platform doors and high-speed railway doors. Recently, high-speed railway platform accidents have occurred frequently, and accidents and train shutdowns caused by passengers accidentally falling into the tracks are common. Conventional platform doors cannot meet the use requirements. The high-speed railway lifting platform doors currently on the market have the disadvantages of slow lifting speed, loud noise, and inability to form emergency passages after abnormal power outages, and cannot be widely used.

[0004] Therefore, in response to the current complex situation of high-speed railway platforms, our company has invented a high-speed railway platform door device with a large span, small footprint, balanced load, and the ability to automatically form an emergency passage in the event of a power outage, which can successfully isolate passengers and tracks. Utility Model Content

[0005] The purpose of the present application is to provide a movement structure for a lifting platform door to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present application provides a lifting platform door movement structure adopting the following technical solution:

[0007] A movement structure for a lifting platform door, comprising a frame, a transmission mechanism and a lifting assembly, wherein the transmission mechanism and the lifting assembly are both installed in the frame, the lifting assembly comprises a lifting bottom plate, a synchronous belt, an upper synchronous wheel, a lower synchronous wheel, a fixed rope fixing plate and a plurality of movable rope fixing plates, the lifting bottom plate is vertically slidably installed in the frame, the fixed rope fixing plate is fixedly connected to a position near the top of the lifting bottom plate, the movable rope fixing plate is arranged at the bottom of the fixed rope fixing plate, and a plurality of movable rope fixing plates are sequentially vertically slidably connected to the lifting bottom plate, the upper synchronous wheel and the lower synchronous wheel are respectively installed at the upper and lower ends of the lifting bottom plate, a synchronous belt is connected between the upper synchronous wheel and the lower synchronous wheel, a first pressing plate and a second pressing plate are respectively fixed on the synchronous belt, the first pressing plate is fixedly connected to the frame for fixing the synchronous belt, the second pressing plate is fixedly connected to the lowest movable rope fixing plate, a plurality of limit plates are evenly spaced on the lifting bottom plate, and the plurality of movable rope fixing plates can respectively stay on the corresponding limit plates;

[0008] The transmission mechanism includes a driving assembly, a chain and a balanced load counterweight, wherein the driving assembly is fixedly installed at a position close to the top of the frame, the balanced load counterweight is slidably installed in the frame, one end of the chain is fixed to the balanced load counterweight, and the other end is fixed at a position close to the bottom of the lifting base plate, and the driving assembly drives the lifting base plate to move in the vertical direction through the chain;

[0009] The weight of the balancing load counterweight is greater than the weight of the lifting assembly as a whole.

[0010] The number of the movable pull rope fixing plates is set to 4, which are the first movable fixing plate, the second movable fixing plate, the third movable fixing plate and the fourth movable fixing plate from bottom to top, the second movable fixing plate is fixed with a second limit block on the side close to the lifting bottom plate, the third movable fixing plate is fixed with a third limit block on the side close to the lifting bottom plate, and the fourth movable fixing plate is fixed with a fourth limit block on the side close to the lifting bottom plate;

[0011] The number of the limiting plates is set to 3, which are the second limiting plate, the third limiting plate and the fourth limiting plate from bottom to top, the width of the third limiting plate is smaller than the width of the second limiting plate, but larger than the width of the fourth limiting plate, the width of the fourth limiting block is larger than the width of the third limiting block, and the width of the third limiting block is larger than the width of the second limiting block;

[0012] The fourth limiting block can be blocked by the fourth limiting plate, the third limiting block can be blocked by the third limiting plate, and the second limiting block can be blocked by the second limiting plate.

[0013] The driving assembly includes a servo motor, a coupling, a driving shaft and a sprocket. The servo motor is fixedly mounted on the frame. The servo motor is connected to the driving shaft through the coupling. The sprocket is fixed on the driving shaft, and the chain is meshed with the sprocket.

[0014] Preferably, in order to reduce the noise when the balanced load counterweight block lands, a buffer pad is fixedly installed at the bottom end of the balanced load counterweight block.

[0015] Preferably, in order to improve safety performance and avoid accidentally hitting the lifting base plate, a protective box cover is fixed to the surface of the lifting base plate, and one end of the chain is fixed to the protective box cover.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: the lifting platform door movement structure adopts a setting in which the weight of the lifting component and the balance load counterweight block are similar, so that the force required to drive the lifting is very small, and the bearing capacity of the entire transmission is greatly reduced, which can achieve faster movement and almost no noise during the movement. At the same time, in the case of power failure, the lifting component can be easily lifted, so that the emergency passage can be opened quickly and automatically even in the case of complete power failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall front view cross-sectional structure of an embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the side cross-sectional structure of an embodiment of the present application.

[0019] Figure 3 It is a rear view of an embodiment of the present application.

[0020] Figure 4 It is a structural schematic diagram used to reflect the lifting assembly in the embodiment of the present application.

[0021] Figure 5 It is a schematic diagram for reflecting the connection relationship between the lifting base plate and the first movable fixed plate, the second movable fixed plate, the third movable fixed plate and the fourth movable fixed plate in the embodiment of the present application.

[0022] Figure 6 It is a schematic diagram of the structure of the lifting assembly in the embodiment of the present application when the platform door is in a closed state.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. frame; 11. skeleton; 21. lifting base plate; 22. synchronous belt; 23. upper synchronous wheel; 24. lower synchronous wheel; 25. fixed pull rope fixing plate; 261. first movable fixing plate; 262. second movable fixing plate; 2621. second limit block; 263. third movable fixing plate; 2631. third limit block; 264. fourth movable fixing plate; 2641. fourth limit block; 271. second limit plate; 272. third limit plate; 273. fourth limit plate; 28. first pressure plate; 29. ​​second pressure plate; 3. chain; 4. balance load counterweight; 41. buffer pad; 5. servo motor; 6. coupling; 7. drive shaft; 8. sprocket; 9. protective box cover. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-6 This application is described in further detail.

[0025] The present application embodiment discloses a movement structure for a lifting platform door, referring to Figure 1-6, including a frame 1, a transmission mechanism and a lifting component, the transmission mechanism and the lifting component are installed in the frame 1, a frame 11 is fixed in the frame 1, the lifting component includes a lifting bottom plate 21, a synchronous belt 22, an upper synchronous wheel 23, a lower synchronous wheel 24, a fixed rope fixing plate 25 and a plurality of movable rope fixing plates, the lifting bottom plate 21 is vertically slidably installed in the frame 1, specifically, the lifting bottom plate 21 is slidably connected to the frame 11, the fixed rope fixing plate 25 is fixedly connected to a position near the top of the lifting bottom plate 21, the movable rope fixing plate is arranged at the bottom of the fixed rope fixing plate 25, and the plurality of movable rope fixing plates The fixed plates are sequentially vertically slidably connected to the lifting base plate 21, the upper synchronous wheel 23 and the lower synchronous wheel 24 are respectively installed at the upper and lower ends of the lifting base plate 21, a synchronous belt 22 is connected between the upper synchronous wheel 23 and the lower synchronous wheel 24, and the first pressing plate 28 and the second pressing plate 29 are respectively fixed on the synchronous belt 22, the first pressing plate 28 is fixedly connected to the skeleton 11 on the frame 1, and is used to fix the synchronous belt 22, and the second pressing plate 29 is fixedly connected to the lowest layer of the movable rope fixing plate, and the lifting base plate 21 is also evenly spaced. A plurality of limit plates are also evenly spaced, and the plurality of movable rope fixing plates can respectively stay on the corresponding limit plates;

[0026] Specifically, refer to Figure 4-6 The number of movable pull rope fixing plates is set to 4, which are, from bottom to top, the first movable fixing plate 261, the second movable fixing plate 262, the third movable fixing plate 263 and the fourth movable fixing plate 264. The second movable fixing plate 262 is fixed with a second limit block 2621 on the side close to the lifting bottom plate 21, the third movable fixing plate 263 is fixed with a third limit block 2631 on the side close to the lifting bottom plate 21, and the fourth movable fixing plate 264 is fixed with a fourth limit block 2641 on the side close to the lifting bottom plate 21; the number of limit plates is set to 3, which are, from bottom to top, The second limiting plate 271, the third limiting plate 272 and the fourth limiting plate 273, the width of the third limiting plate 272 is smaller than the width of the second limiting plate 271, but larger than the width of the fourth limiting plate 273, the width of the fourth limiting block 2641 is larger than the width of the third limiting block 2631, and the width of the third limiting block 2631 is larger than the width of the second limiting block 2621; the fourth limiting block 2641 can be blocked by the fourth limiting plate 273, the third limiting block 2631 can be blocked by the third limiting plate 272, and the second limiting block 2621 can be blocked by the second limiting plate 271.

[0027] Since the first pressing plate 28 clamps the synchronous belt 22, when the lifting base plate 21 is lifted upward, the synchronous belt 22 moves relatively on the upper synchronous wheel 23 and the lower synchronous wheel 24, and the synchronous belt 22 drives the first movable fixed plate 261 to move upward through the second pressing plate 29. When the first movable fixed plate 261 contacts the second movable fixed plate 262, it drives the second movable fixed plate 262 to move upward together. Similarly, the third movable fixed plate 263 and the fourth movable fixed plate 264 can be gradually driven to move upward, so that the platform door can be opened.

[0028] On the contrary, when the first movable fixed plate 261 moves downward, the second movable fixed plate 262, the third movable fixed plate 263 and the fourth movable fixed plate 264 will move downward together under the action of their own gravity. During the downward process, due to the existence of the fourth limiting plate 273, the third limiting plate 272 and the second limiting plate 271, the second movable fixed plate 262, the third movable fixed plate 263 and the fourth movable fixed plate 264 will be evenly spaced apart.

[0029] Reference Figure 2 and Figure 3 The transmission mechanism includes a driving assembly, a chain 3 and a balanced load counterweight 4. The driving assembly is fixedly installed at a position near the top of the frame 1, and the balanced load counterweight 4 is slidably installed in the frame 1. One end of the chain 3 is fixed on the balanced load counterweight 4, and the other end is fixed at a bottom position near the lifting base plate 21. The driving assembly drives the lifting base plate 21 to move in the vertical direction through the chain 3. A buffer pad 41 is fixedly installed at the bottom end of the balanced load counterweight 4. The driving assembly includes a servo motor 5, a coupling 6, a driving shaft 7 and a sprocket 8. The servo motor 5 is fixedly installed on the frame 1. The servo motor 5 is connected to the driving shaft 7 through the coupling 6. The sprocket 8 is fixed on the driving shaft 7. The chain 3 is meshed with the sprocket 8. The transmission installation of the sprocket 8 and the chain 3 is reliable, and the transmission gap is small.

[0030] The weight of the balancing load counterweight 4 is greater than the weight of the entire lifting assembly, specifically, it is slightly greater, about 2KG. This arrangement, on the one hand, because the weight of the lifting assembly and the balancing load counterweight 4 are similar, the force required to drive the lifting is very small, and the carrying capacity of the entire transmission is greatly reduced, which can achieve faster movement, and there is almost no noise during the movement. On the other hand, in the event of an emergency due to power outage, the weight of the 2KG is sufficient to drive the balancing load counterweight 4 to move downward, thereby lifting the lifting assembly upward, so that the entire platform door can be automatically opened even without electricity in an abnormal situation, forming an emergency passage. At the same time, the weight of the 2KG can also avoid the occurrence of danger. For example, when the pull rope is hung on a person or an object, the force is small and the lifting assembly will stop moving, thereby avoiding the occurrence of danger.

[0031] Reference Figure 1 and Figure 2 In order to improve safety and prevent personnel from accidentally touching the lifting base plate 21, a protective box cover 9 is fixed on the surface of the lifting base plate 21, and one end of the chain 3 is fixed on the protective box cover 9.

[0032] When the entire movement is installed and used, it is generally arranged in two symmetrical positions on the left and right, and the corresponding fixed pull rope fixing plates 25 and multiple movable pull rope fixing plates are directly connected to the pull rope to form a pull rope type platform door effect.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A movement structure for a lifting platform door, characterized in that: The invention comprises a frame (1), a transmission mechanism and a lifting assembly, wherein the transmission mechanism and the lifting assembly are both installed in the frame (1), and the lifting assembly comprises a lifting base plate (21), a synchronous belt (22), an upper synchronous wheel (23), a lower synchronous wheel (24), a fixed rope fixing plate (25) and a plurality of movable rope fixing plates, wherein the lifting base plate (21) is vertically slidably installed in the frame (1), the fixed rope fixing plate (25) is fixedly connected to a position close to the top of the lifting base plate (21), the movable rope fixing plate is arranged at the bottom of the fixed rope fixing plate (25), and the plurality of movable rope fixing plates are vertically slidably connected to the lifting base plate (21) in sequence. 1), the upper synchronous wheel (23) and the lower synchronous wheel (24) are respectively installed at the upper and lower ends of the lifting base plate (21), a synchronous belt (22) is connected between the upper synchronous wheel (23) and the lower synchronous wheel (24), and a first pressing plate (28) and a second pressing plate (29) are respectively fixed on the synchronous belt (22), the first pressing plate (28) is fixedly connected to the frame (1) for fixing the synchronous belt (22), and the second pressing plate (29) is fixedly connected to the bottommost movable rope fixing plate, and a plurality of limit plates are evenly spaced on the lifting base plate (21), and the plurality of movable rope fixing plates can respectively stay on corresponding limit plates, The transmission mechanism comprises a driving assembly, a chain (3) and a balancing load counterweight (4); the driving assembly is fixedly mounted at a position close to the top of the frame (1); the balancing load counterweight (4) is slidably mounted in the frame (1); one end of the chain (3) is fixed to the balancing load counterweight (4), and the other end is fixed to a position close to the bottom of the lifting base plate (21); the driving assembly drives the lifting base plate (21) to move in a vertical direction via the chain (3); The weight of the balancing load counterweight (4) is greater than the weight of the entire lifting assembly.

2. The movement structure for a lifting platform door according to claim 1, characterized in that: The number of the movable rope fixing plates is set to be 4, which are, from bottom to top, a first movable fixing plate (261), a second movable fixing plate (262), a third movable fixing plate (263) and a fourth movable fixing plate (264); a second limit block (2621) is fixed on a side of the second movable fixing plate (262) close to the lifting bottom plate (21); a third limit block (2631) is fixed on a side of the third movable fixing plate (263) close to the lifting bottom plate (21); a fourth limit block (2641) is fixed on a side of the fourth movable fixing plate (264) close to the lifting bottom plate (21); The number of the limiting plates is set to be 3, which are, from bottom to top, the second limiting plate (271), the third limiting plate (272) and the fourth limiting plate (273); the width of the third limiting plate (272) is smaller than the width of the second limiting plate (271), but larger than the width of the fourth limiting plate (273); the width of the fourth limiting block (2641) is larger than the width of the third limiting block (2631); the width of the third limiting block (2631) is larger than the width of the second limiting block (2621); The fourth limiting block (2641) can be blocked by the fourth limiting plate (273), the third limiting block (2631) can be blocked by the third limiting plate (272), and the second limiting block (2621) can be blocked by the second limiting plate (271).

3. The movement structure for a lifting platform door according to claim 1, characterized in that: The driving assembly comprises a servo motor (5), a coupling (6), a driving shaft (7) and a sprocket (8); the servo motor (5) is fixedly mounted on the frame (1); the servo motor (5) is connected to the driving shaft (7) via the coupling (6); the sprocket (8) is fixed on the driving shaft (7); and the chain (3) is meshed with the sprocket (8).

4. The movement structure for a lifting platform door according to claim 1, characterized in that: A buffer pad (41) is fixedly mounted on the bottom end of the balancing load counterweight (4).

5. The movement structure for a lifting platform door according to claim 1, characterized in that: A protective box cover (9) is fixed on the surface of the lifting base plate (21), and one end of the chain (3) is fixed on the protective box cover (9).

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