CN115387686A

CN115387686A - Movable box guide driving system based on platform door

Info

Publication number: CN115387686A
Application number: CN202210644920.1A
Authority: CN
Inventors: 李毅; 刘红娇; 沈志军; 刘长和; 张磊; 张军; 杨占良; 黄隆群; 陈绪旺; 钟韬
Original assignee: Fangda Zhiyuan Technology Co ltd; China Railway Design Corp
Current assignee: Fangda Zhiyuan Technology Co ltd; China Railway Design Corp
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-11-25

Abstract

The invention discloses a platform door-based mobile box guiding driving system, which comprises a full-length guiding unit, a plurality of mobile boxes and a plurality of driving units, wherein the mobile boxes are sequentially arranged above the full-length guiding unit; the full-length guide unit comprises a platform plate assembly, a guide wheel assembly, a supporting wheel assembly and a guide shoe assembly, wherein the platform plate assembly is arranged on the lower supporting assembly, and at least two guide gaps are formed in the whole length of the platform plate assembly; the guide wheel assembly, the support wheel assembly and the guide shoe assembly are respectively arranged on the front side and the rear side of the bottom plate of the mobile box, and respectively penetrate through the corresponding guide gaps and are matched with the platform plate assembly; each movable box is at least provided with a driving unit, and the driving unit is arranged on the bottom plate of the movable box and penetrates through the guide gap to perform transmission motion below the platform plate component. The invention ensures that the movable box operates more stably and reliably, greatly improves the safety coefficient and greatly reduces the difficulty of site construction.

Description

Movable box guide driving system based on platform door

Technical Field

The invention relates to the technical field of urban rail transit and high-speed railway platform doors, in particular to a platform door-based mobile box guide driving system.

Background

The rail platform door system is a continuous barrier which is arranged at the edge of a platform and/or a platform, is used for isolating a passenger waiting area and a rail area from each other, corresponds to a train door and can open and close a sliding door in a multi-stage control mode.

For urban rails such as subways and light rails, the vehicle type of a certain line is a determined single vehicle type, and the relative positions of the vehicle doors of each train are the same as the sizes of the vehicle doors, so that the shield doors and the safety doors used for the subway platform can be arranged according to the specific vehicle types, and the sliding doors are in one-to-one correspondence with the vehicle doors. However, high-speed railway trains and inter-city trains in China have various vehicle types due to historical reasons, railway platforms all face the requirements of the trains with various vehicle types for stopping the platforms, and the precision of the stopping positions is lower than that of subways and light rails, so that the requirement on the vehicle type adaptability of the railway platform safety doors is higher than that of the conventional subway safety doors.

In order to meet the market demands, a full-motion platform door system is provided in the market, and the functions of opening doors at any positions and opening a door with an ultra-large opening degree can be realized. The transmission system of the existing fixed platform door is a fixed platform door transmission system mainly based on belt transmission and screw rod transmission, the transmission system only meets the requirements of stable and reliable transmission, simple structure, convenience in installation and maintenance and service life, but has the limitations of short transmission distance, large structure size and mutual independence of each unit transmission system, and cannot be applied to a novel full-motion platform door with movable full length.

The novel requirement of the full-motion platform door on the transmission system is more complex than the prior platform door, the structure is stable and reliable, the safety is high, the functional requirement that the transmission distance is not limited is met, and simultaneously, all door bodies of the full-motion platform door can move, so that the novel requirement on the installation position and the space of the transmission system is provided, and therefore, the novel transmission system also needs to meet the appearance requirement of small and compact structure.

In addition to high requirements for the transmission mechanism, the fully-movable platform door also has very strict requirements for the guide system. The conventional platform door sliding door has an independent guide rail or device with a certain length, and an opening and closing area is not interfered, but for a full-length movable platform door, the door opening position and the door opening size are changed along with the change of a vehicle type, and the door opening direction and the moving distance of each moving door unit are required to be matched with each other, so that the guide rail or device with a certain length can not be independently used for each moving door unit.

Therefore, it is highly desirable to develop a new guiding driving system for a mobile box based on a platform door, which fundamentally solves the above technical problems.

Disclosure of Invention

The invention provides a guide driving system of a movable box based on a platform door, aiming at solving the problems in the prior art, wherein the driving part of the guide driving system has small structural overall dimension, stable and reliable transmission, high safety, unlimited movement distance and capability of being in butt joint and continuous infinitely; the guide part has the full-length guide function of a single shared platform door with full-length movement and full-length arrangement, and meets the wind pressure requirement of rail transit; the whole guide driving system adopts guide and driving coordination, and the movable box is ensured to operate more stably and reliably.

The invention is realized in this way, a platform door-based mobile box guide driving system, which comprises a full-length guide unit, a plurality of mobile boxes and a plurality of driving units, wherein the full-length guide unit is laid along the edge of a platform, and the mobile boxes are positioned above the full-length guide unit and are sequentially arranged along the length direction of the full-length guide unit;

the full-length guide unit comprises a platform plate assembly, a guide wheel assembly, a supporting wheel assembly and a guide shoe assembly, wherein the platform plate assembly is arranged on a supporting assembly positioned below the platform plate assembly, and the platform plate assembly is provided with at least two guide gaps along the length direction; the guide wheel assembly, the support wheel assembly and the guide shoe assembly are respectively arranged on the front side and the rear side of the bottom plate of the mobile box, the guide wheel assembly and the support wheel assembly are positioned on different sides, and the guide wheel assembly, the support wheel assembly and the guide shoe assembly respectively penetrate through corresponding guide gaps and are matched with the platform plate assembly for enabling the mobile box to move along the platform plate assembly;

each moving box is at least provided with one driving unit, and the driving unit is installed on a bottom plate of the moving box, penetrates through the guide gap, and performs transmission motion below the platform plate assembly, and is used for driving the moving box to move along the full length of the full-length guide unit.

Preferably, the guide wheel assembly passes through a guide gap close to the railway track side, and a guide part of the guide wheel assembly clamps the platform plate assembly and leaves a rolling gap, so that the guide wheel assembly moves on the platform plate assembly, and the guide wheel assembly and the platform plate assembly jointly form a first guide wheel guide rail pair;

the supporting wheel assembly penetrates through a guide gap close to the edge side of the platform, the supporting part of the supporting wheel assembly clamps the platform plate assembly and a rolling gap is reserved, so that the supporting wheel assembly moves on the platform plate assembly, and the supporting wheel assembly and the platform plate assembly jointly form a second guide wheel guide rail pair;

the guide shoe assembly extends into any one or more guide gaps to form a guide shoe guide mechanism.

Preferably, the platform plate assembly is provided with an arc-shaped groove at a position corresponding to the guide wheel assembly, and the groove is embedded with the optical axis guide rail through clearance fit.

Further preferably, the platform plate assembly is composed of a plurality of platform plates with end portions butted in sequence; and one end of the optical axis guide rail installed in the groove extends out of the end surface of the platform plate to form a butt joint male head, the other end of the optical axis guide rail is recessed into the groove to form a butt joint female head, and the butt joint female head and the butt joint male head are spliced to enable the optical axis guide rail to be located on the same straight line.

Further preferably, the guide wheel assembly comprises a guide wheel bracket and a guide part arranged on the guide wheel bracket, the guide wheel bracket is arranged on the platform door bottom plate, and the guide part comprises a first guide wheel and a second guide wheel; the first guide wheel is a concave guide wheel, and the first guide wheel on the side corresponding to the optical axis guide rail is rotatably arranged on the upper part of the guide wheel bracket around the axis of the first guide wheel and is matched with the optical axis guide rail; the second guide wheel is rotatably arranged at the lower part of the guide wheel bracket around the axis of the second guide wheel on the same side with the guide wheel, and the wheel surface of the second guide wheel is abutted with the platform plate assembly;

the supporting wheel assembly comprises a supporting wheel bracket and a supporting part, the supporting wheel bracket is arranged on a platform door bottom plate, and the supporting part comprises a first supporting wheel and a second supporting wheel; the first supporting wheel is rotatably arranged at the upper part of the supporting wheel bracket around the axis of the first supporting wheel, and the wheel surface of the first supporting wheel is abutted against the platform plate assembly; the second supporting wheel is rotatably arranged at the lower part of the supporting wheel bracket around the axis of the second supporting wheel on the same side with the supporting wheel, and the wheel surface of the second supporting wheel is abutted with the platform plate component;

the guide shoe assembly comprises a guide shoe support and a guide shoe sleeve, and the guide shoe sleeve is nested on the guide shoe support.

Further preferably, the length directions of the two sides of the guide shoe support are provided with long bulges, and correspondingly, the two sides of the inner part of the guide shoe sleeve are provided with notches matched with the bulges.

Preferably, the driving unit is composed of a driving motor, a gear assembly and a rack assembly, the gear assembly comprises a gear seat and a gear, the driving motor is arranged inside the movable box and is mounted on the gear seat, the gear seat is mounted on a bottom plate of the movable box and penetrates through the guide gap, the gear is rotatably and horizontally arranged on the gear seat below the platform plate assembly, an output shaft of the driving motor extends into the gear assembly and is connected with the gear, the gear is meshed with a rack of the rack assembly, and the gear is driven to move along the rack through the output shaft of the driving motor;

the rack assembly comprises a rack seat and a rack, the rack seat is installed on a supporting assembly below the platform plate assembly, the rack is installed on the rack seat, and the rack is aligned and butted through flanges of the rack seat so as to realize full-length butt joint.

Preferably, the upper part of the gear seat is of a circular double-layer flange structure with a through hole at the center, the upper-layer flange is used for mounting the driving motor, an output shaft of the driving motor penetrates through the through hole to be connected with the gear, and the lower-layer flange is used for mounting the gear seat on the bottom plate of the movable box;

the lower part of the gear seat is of a plate-type clip structure, the plate-type clip structure is matched with the guide gap and penetrates through the guide gap, and the gear is arranged at the lower part of the inner side of the plate-type clip structure;

the lower part of the gear seat is vertically arranged and rigidly connected with the upper part of the gear seat, and the upper part of the gear seat covers the lower part of the gear seat.

Still further preferably, the diameter of the upper flange is smaller than that of the lower flange.

Still further preferably, the bottom of board-like type structure of returning is provided with the mount pad hole, install the bearing in the mount pad hole, be provided with the bush between bearing and the gear, bush one end is inconsistent with the bearing inner race, and the other end is inconsistent with the gear, driving motor's output shaft passes through parallel key and gear connection, and passes gear, bush in proper order, is connected with the bearing.

The invention has the advantages and positive effects that:

1. the mobile box guide driving system enables the mobile box to operate more stably and reliably, greatly improves the safety coefficient and greatly reduces the difficulty of site construction; the movable boxes can move and open the door at any position of the edge of the platform according to the specific train type, the door opening position can be flexibly adjusted, and the ultra-large platform door opening is realized; can form different combination schemes that open the door according to concrete demand, be applicable to various train motorcycle types and size, the practicality is strong, is favorable to realizing safe and reliable and correspond the platform door process of closing the door that matches with different trains.

2. The full-length guide unit adopts a guide structure with double rows of guide wheels and guide shoes and a guide structure to be connected and matched with the platform door, and the guide wheels and the supporting wheel assemblies pass through the guide gaps to vertically clamp the platform plate of the station and are in rolling fit with the platform plate, so that the guide wheels, the supporting wheels and the guide shoe assemblies can smoothly and smoothly operate along the platform plate, the driving force for operating the movable box is reduced, the movable box operates stably, the requirement of the platform door on resisting radial wind pressure can be better met, the anti-torsion moment and the anti-overturning moment are improved, and the platform door can operate more stably and reliably. Simultaneously, adopt the optical axis guide rail to replace the linear guide of traditional platform door as guide structure, solved the direction problem of novel full-motion platform door, and the optical axis guide rail passes through the butt joint of public female first characteristic total length, has solved the problem that the butt joint is difficult to the total length arrangement, satisfies the movable requirement of platform door total length, also greatly reduced the construction degree of difficulty on the spot when having reduced the guide rail precision. The full-length guide unit is small in installation volume, high in space utilization rate, low in requirements on installation accuracy, low in requirements on use environment and maintainability, capable of playing a guide role and bearing radial pressure.

3. The driving unit of the invention adopts a gear and rack transmission structure, integrates the driving of all the moving boxes into a set of driving system, is arranged in a whole length, and has the advantages of simple structure, small structural overall dimension, stability, reliability, high safety, unlimited movement distance, infinite butt joint and continuation and the like; and with the cooperation of full length guide unit, carry out driven formula structure of putting down below the platform board subassembly, with rack and pinion isolated, factor of safety is high, and satisfies the security requirement that the passenger got on or off the train, has improved rack and pinion life-span simultaneously, has avoided rack and pinion to expose artificial wearing and tearing and damage that bring for can not produce the interference to drive unit, and make and remove box and platform board subassembly cooperation, guarantee to operate more steadily.

4. The upper part of the gear seat adopts a circular double-layer flange structure with a through hole in the center, so that the main motor and the gear seat are convenient to mount and dismount, and the phenomenon that particle impurities at a platform plate fall into the gear to influence the working performance of the gear is avoided; the lower part adopts a plate-type square-shaped structure, the rigidity is improved by rigid connection, the gear can be well connected with the driving motor and the rack, and the gear can be limited and restricted up and down at the same time, so that the platform plate guide gap can move in a small width manner, the guide effect can be realized, the transverse bearing capacity of the output shaft of the driving motor can be reduced, and the gear and the rack can be always kept in a good meshing state; the design of unique gear seat makes whole actuating system's structure compacter, and life is longer, and operating stability is better, has satisfied the passenger simultaneously and has passed a stop to the security requirement of platform door platform board subassembly.

5. The gear rack transmission of the invention adopts a horizontal transmission mode, reduces vibration to a great extent, enables transmission force to be larger, enables the gear rack meshing motion to be more stable, has high transmission efficiency, and enables the motion and the braking of the movable box to be easier.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an exploded view of a mobile pod guidance drive system according to an embodiment of the present invention;

FIG. 2 is a perspective view of a full length guide unit provided by an embodiment of the present invention;

FIG. 3 is a side view of a full length guide unit provided by an embodiment of the present invention;

FIG. 4 is a perspective view of a guide wheel assembly provided by an embodiment of the present invention;

FIG. 5 is an exploded view of a guide wheel assembly provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an optical axis guide rail butt joint provided in the embodiment of the present invention;

FIG. 7 is a perspective view of a support wheel assembly provided by an embodiment of the present invention;

FIG. 8 is an exploded view of a support wheel assembly provided by an embodiment of the present invention;

fig. 9 is a perspective view of a driving unit provided by an embodiment of the present invention;

FIG. 10 is a side view of a drive unit provided by an embodiment of the present invention;

fig. 11 is an exploded view of the gear assembly and drive motor provided by an embodiment of the present invention.

Description of reference numerals:

1. moving the cartridge; 101. a mobile box bottom plate; 102. a hole;

2. a full-length guide unit;

20. a platform plate assembly; 201. a guide rail seat; 2011. a groove; 202. a first threshold step plate; 203. a second threshold step plate; 204. a first guide gap; 205. a second guide gap; 206. an optical axis guide rail; 2061. butting the male heads; 2062. butting a female joint;

21. a guide wheel assembly; 211. a first guide wheel; 212. a second guide wheel; 213. a guide wheel bracket;

22. a support wheel assembly; 221. a first supporting wheel; 222. a second supporting wheel; 223. a support wheel bracket;

23. a guide shoe assembly; 231. a guide shoe bracket; 232. a boot guide sleeve; 2311. a protrusion; 2321. a recess;

24. a support assembly; 25. a first bearing; 26. a circlip; 27. a first bushing; 28. a wheel axle; 29. fixing the bolt;

3. a drive unit;

30. a gear assembly; 301. a gear seat; 3011. mounting seat holes; 3012. a through hole; 302. a gear; 303. a flat bond; 304. A second bushing; 305. a second bearing;

31. a rack assembly; 311. a rack; 312. a rack seat;

32. a drive motor; 321. an output shaft of the drive motor.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 11, the present embodiment provides a platform door-based mobile box guiding driving system, which includes a full length guiding unit 2, a plurality of mobile boxes 1, and a plurality of driving units 3, wherein the full length guiding unit 2 is laid along an edge of a platform, and the plurality of mobile boxes 1 are located above the full length guiding unit 2 and are sequentially arranged along a length direction of the full length guiding unit 2.

The full-length guide unit 2 comprises a platform plate assembly 20, a guide wheel assembly 21, a support wheel assembly 22 and a guide shoe assembly 23, wherein the platform plate assembly 20 is mounted on a bearing assembly 24 positioned below the platform plate assembly, and the platform plate assembly 20 is provided with at least two guide gaps along the length direction; the guide wheel assembly 21, the support wheel assembly 22 and the guide shoe assembly 23 are respectively installed on the front side and the rear side of the moving box bottom plate 101, the guide wheel assembly 21 and the support wheel assembly 22 are located on different sides, and the guide wheel assembly 21, the support wheel assembly 22 and the guide shoe assembly 23 respectively penetrate through corresponding guide gaps and are matched with the platform plate assembly 20 to enable the moving box 1 to move along the platform plate assembly 20, so that the door opening and the door opening at any position are realized; the guide wheel assembly 21, the support wheel assembly 22 and the guide shoe assembly 23 are respectively matched with the platform board assembly 20, so that the mobile box 1 can move and run stably.

Each moving box 1 is at least provided with one driving unit 3, and the driving unit 3 is installed on the moving box bottom plate 101, penetrates through the guide gap, and performs transmission motion below the platform plate assembly 20, and is used for driving the moving box 1 to move along the full length of the full-length guide unit 2.

The guide wheel assembly 21 penetrates through a guide gap close to the side of a railway track, a guide part of the guide wheel assembly 21 clamps the platform plate assembly 20 and a rolling gap is reserved, so that the guide wheel assembly 21 moves on the platform plate assembly 20, and the guide wheel assembly 21 and the platform plate assembly 20 jointly form a first guide wheel guide rail pair; the supporting wheel assembly 22 passes through a guide gap close to the edge side of the platform, and the supporting part of the supporting wheel assembly 22 clamps the platform plate assembly 20 and leaves a rolling gap, so that the supporting wheel assembly 22 moves on the platform plate assembly 20, and the supporting wheel assembly 22 and the platform plate assembly 20 jointly form a second guide wheel guide rail pair; the guide shoe assembly 23 extends into any one or more guide gaps to form a guide shoe guide mechanism. Double guide pulley guide rail guide structure adds guide shoe guide structure and is connected the cooperation with removing box 1, and guide pulley subassembly 21 and supporting wheel subassembly 22 pass the guide gap about the clamping station platen, with the rolling cooperation of platform board, has further guaranteed the stationarity of removing box 1 operation, also can be better simultaneously satisfy the platform door and resist radial wind pressure requirement, improved anti-torque moment and anti-overturning moment effect, make the operation of platform door more reliable and more stable.

The platform plate assembly 20 is composed of a plurality of platform plates whose ends are butted in sequence and laid along the platform edge, so that each mobile box 1 can move along the whole joined platform plate assembly 20 at the platform edge.

In the present embodiment, two guiding gaps are provided, so that the platform plate assembly 20 is composed of a guide rail seat 201, a first threshold step plate 202 and a second threshold step plate 203, the guide rail seat 201, the first threshold step plate 202 and the second threshold step plate 203 are all installed on the supporting assembly 24 located below the guide rail seat, the supporting assembly 24 located below the first threshold step plate is fixed relative to the platform, the first guiding gap 204 is left between the guide rail seat 201 and the first threshold step plate 202, and the second guiding gap 205 is left between the first threshold step plate 202 and the second threshold step plate 203. The guide rail seat 201, the first threshold step plate 202 and the second threshold step plate 203 are all made of aluminum profiles.

The guide wheel assembly 21 comprises a guide wheel bracket 213 and a guide part arranged on the guide wheel bracket, the guide wheel bracket 213 is arranged on the moving box bottom plate 101, and the guide part comprises a first guide wheel 211 and a second guide wheel 222; the first guide wheel 211 is rotatably mounted on the upper portion of the guide wheel support 213 around the axis of the first guide wheel through the first bearing 25, the first bushing 27, the circlip 26 and the wheel shaft 28, the second guide wheel 222 is rotatably mounted on the lower portion of the guide wheel support 213 around the axis of the second guide wheel through the first bearing 25, the first bushing 27, the circlip 26 and the wheel shaft 28, and the first guide wheel 211 and the second guide wheel 222 are located on the same side of the guide wheel support 213. Specifically, one end of the wheel shaft 28 is fixedly connected with the guide wheel support 213, the other end of the wheel shaft 28 is connected with the elastic retaining ring 26, the first bushing 27 is sleeved on the wheel shaft 28, one end of the first bushing is abutted against the guide wheel support 213, the inner ring of the first bearing 25 is sleeved on the wheel shaft 28 and abutted between the other end of the first bushing 27 and the elastic retaining ring 26, and the first guide wheel 211 is fixedly sleeved on the outer ring of the first bearing 25. The second guide wheel 222 is installed in the same manner as the first guide wheel 211.

The guide rail seat 201 is provided with an arc-shaped groove 2011 at a position corresponding to the guide wheel assembly 21, the optical axis guide rail 206 is embedded in the groove 2011 in a clearance fit mode, the first guide wheel 211 is a concave guide wheel matched with the optical axis guide rail 206, and the concave surface of the first guide wheel 211 is matched with the arc surface of the optical axis guide rail 206 in a nested mode to play a supporting and guiding role, so that the moving of the moving box 1 is more convenient, and the position adjustment of the moving box 1 is convenient. When the optical axis guide rail 206 is embedded in the groove 2011, one end of the optical axis guide rail 206 extends out of the end face of the platform plate to form a butt male joint 2061, the other end of the optical axis guide rail 206 is recessed into the groove to form a butt female joint 2062, and at the butt joint position of the platform plate, the butt female joint 2062 and the butt male joint 2061 are spliced to enable the optical axis guide rail 206 to be positioned on the same straight line; the guide rail composed of the optical axis guide rail 206 and the aluminum profile guide rail seat 201 is butted, extended and mutually positioned through male and female heads, and is arranged in the full-length range of the edge of the platform, so that the requirement of full-length movement of the platform door is met, meanwhile, the construction difficulty is greatly reduced, the stability and the reliability are realized, and the requirement on construction precision is low.

The upper part of the guide wheel support 213 is mounted on the moving box bottom plate 101 through a fixing bolt 29, the lower part of the guide wheel support 213 penetrates through the first guide gap 204, the first guide wheel 211 is matched with the optical axis guide rail 206, the wheel surface of the second guide wheel 222 is abutted against the lower end surface of the guide rail seat 201, the first guide wheel 211 and the second guide wheel 222 vertically clamp the guide rail seat 201 and leave a rolling gap, so that the guide wheel assembly 21 moves on the guide rail seat 201 along the optical axis guide rail 206, and the guide wheel assembly 21 and the guide rail seat 201 jointly form a first guide wheel guide rail pair. The guide wheel assembly 21 passes through the guide gap to clamp the guide rail seat 201 up and down, so that the movable box 1 moves back and forth along the optical axis guide rail 206 under the guide of the guide wheel assembly 21, the driving force of the movable box 1 is reduced, and the movable box can play a role in supporting and guiding and bears partial radial force.

The supporting wheel assembly 22 comprises a supporting wheel bracket 223 and a supporting part, the supporting wheel bracket 223 is installed on the moving box bottom plate 101, and the supporting part comprises a first supporting wheel 221 and a second supporting wheel 222; the first supporting wheel 221 is rotatably mounted on the upper portion of the supporting wheel bracket 223 through a first bearing 25, a first bushing 27, a circlip 26 and a wheel shaft 28 around the axis of the first supporting wheel 221, the second supporting wheel 222 is rotatably mounted on the lower portion of the supporting wheel bracket 223 through a first bearing 25, a first bushing 27, a circlip 26 and a wheel shaft 28 around the axis of the second supporting wheel, and the first supporting wheel 221 and the second supporting wheel 222 are located on the same side of the supporting wheel bracket 223. The specific installation manner of the first support wheel 221 and the second support wheel 222 is also the same as that of the first guide wheel 211.

The supporting wheel assembly 22 is installed on the moving box bottom plate 101 through a supporting wheel bracket 223 and a fixing bolt 29 and penetrates through the second guide gap 205, the wheel surface of the first supporting wheel 221 is abutted with the upper end surface of the second threshold step plate 203, and the wheel surface of the second supporting wheel 222 is abutted with the lower end surface of the second threshold step plate 203; the first support wheel 221 and the second support wheel 222 vertically clamp the second threshold step plate 203 and leave a rolling gap, so that the support wheel assembly 22 moves on the second threshold step plate 203, and the support wheel assembly 22 and the second threshold step plate 203 jointly form a second guide wheel guide rail pair. The support wheel assembly 22 penetrates through the guide gap to vertically clamp the second threshold step plate 203, so that the moving box 1 moves on the second threshold step plate 203 along the guide gap under the guide of the support wheel assembly 22, the driving force for the operation of the moving box 1 is reduced, meanwhile, the functions of supporting and guiding can be realized, and partial radial force is born.

The guide shoe assembly 23 comprises a guide shoe support 231 and a guide shoe sleeve 232, wherein the guide shoe support 231 is mounted on the movable box bottom plate 101, and the guide shoe sleeve 232 is nested on the guide shoe support 231. Specifically, the length directions of both sides of the guide shoe support 231 are provided with long protrusions 2311, and correspondingly, both sides of the interior of the guide shoe sleeve 232 are provided with notches 2321 matched with the protrusions 2311. The guide shoe bracket 231 is mounted on the movable box bottom plate 101 through a fixing bolt 29, and the guide shoe assembly 23 extends into the first guide gap 204 and the second guide gap 205 to form a guide shoe guide mechanism; the guide shoe assembly 23 extends into the guide gap and can play a role in assisting in guiding and bearing partial radial force as the movable box 1 moves and slides in the corresponding guide gap.

The bottom plate 101 of the movable box is respectively provided with holes 102 for the guide wheel assemblies 21, the support wheel assemblies 22 and the guide shoe assemblies 23 to pass through, so that the guide wheel assemblies 21, the support wheel assemblies 22 and the guide shoe assemblies 23 can be conveniently installed.

The guide gaps through which the driving unit 3 and the guide wheel assembly 21 penetrate are different, so that the running stability is further improved; the driving unit 3 is composed of a driving motor 32, a gear assembly 30 and a rack assembly 31, wherein the gear assembly 30 comprises a gear seat 301 and a gear 302, the driving motor 32 is located in the movable box 1 and is installed on the gear seat 301, the gear seat 301 is installed on the movable box bottom plate 101 and penetrates through the guide gap II 205, the gear seat 301 below the platform plate assembly 20 is rotatably horizontally arranged on the gear seat 301, an output shaft 321 of the driving motor extends into the gear assembly 30 to be connected with the gear 302, the gear 302 is meshed with a rack 311 of the rack assembly 31, and the output shaft 321 of the driving motor drives the gear 302 to move along the rack 311. The gear rack transmission mechanism is adopted, all the drives of the movable boxes 1 are integrated into a set of drive system, the whole length is arranged, and the device has the advantages of simple structure, small structural size, stability, reliability, high safety, unlimited movement distance, infinite butt joint and continuity and the like. Adopt and carry out driven formula structure of putting down in platform board subassembly 20 below, through station platen subassembly 20 with rack and pinion and external environment isolated, effectively avoid the damage of pollutant and artificial condition to rack and pinion, factor of safety is high, and satisfy the security requirement of passenger's train on and off, the rack and pinion life-span has been improved simultaneously, the artificial wearing and tearing and the damage of having avoided the rack and pinion to expose and bring, make can not produce the interference to drive unit 3, improve driven reliability and security, and make removal box 1 and the cooperation of platform board subassembly 20 once more, guarantee to operate more steadily. The gear rack transmission adopts a horizontal transmission mode, so that the vibration is reduced to a great extent, the transmission force is larger, the gear rack meshing motion is more stable, the transmission efficiency is high, and the motion and the braking of the movable box 1 are easier.

The rack assembly 31 comprises a rack seat 312 and a rack 311, wherein the rack seat 312 is an aluminum profile rack seat, is installed on the support assembly 24 below the platform plate assembly 20, and is a structural foundation of the transmission system; the rack 311 is installed on the rack seat 312 and located below the platform plate assembly 20, and the rack 311 is aligned and butted through the flanges of the rack seat 312, so that full-length butt joint is realized.

The upper part of the gear seat 301 is installed on the moving box bottom plate 101, the lower part of the gear seat 301 penetrates through the second guide gap 205, and the gear 302 is horizontally arranged in the lower part of the gear seat 301. Specifically, the circular double-deck formula ring flange structure of central band-pass hole is taken on the upper portion of pinion stand 301, and the pinion stand 301 of being convenient for is connected fixedly with driving motor 32 and removal box bottom plate 101 respectively, and the upper flange dish is used for the installation driving motor 32, driving motor's output shaft 321 passes through-hole 3012 and is connected with gear 302, and the lower floor's flange dish is used for installing pinion stand 301 on removing box bottom plate 101, the diameter of upper flange dish is less than the diameter of lower floor's flange dish, easy to assemble and dismantlement driving motor 32 and pinion stand 301.

The lower part of gear seat 301 is the board-like structure of returning the type, gear seat 301's lower part and gear seat 301's upper portion are arranged perpendicularly, rigid connection, have improved rigidity, just gear seat 301's upper portion covers gear seat 301's lower part, has avoided the granule debris of platform board department to drop inside getting into gear 302, influences gear 302's working property. The plate-type clip structure is used for being matched with the second guide gap 205 and penetrating through the second guide gap 205 to reach the lower part of the platform plate assembly 20, the gear 302 is horizontally arranged at the lower part of the inner side of the plate-type clip structure, the gear 302 can be well connected with the driving motor 32 and the rack 311, meanwhile, the gear 302 can be limited and restricted up and down, safety, stability and reliability are achieved, the small width of the guide gap of the platform plate can be adapted to move, the guide effect can be achieved, meanwhile, the transverse bearing capacity of the output shaft 321 of the driving motor is reduced, the gear rack can be always kept in a good meshing state, the whole driving unit 3 is more compact in structure due to the design of the whole gear seat 301, the service life is longer, the operation stability is better, and meanwhile, the safety requirement of passengers for the platform plate when the passengers cross the station.

The bottom of the plate-type square-shaped structure is provided with a mounting seat hole 3011, a second bearing 305 is installed in the mounting seat hole 3011, a second bushing 304 is arranged between the second bearing 305 and the gear 302, one end of the second bushing 304 is abutted to the inner ring of the second bearing 305, the other end of the second bushing is abutted to the gear 302, and an output shaft 321 of the driving motor is connected with the gear 302 through a flat key 303, sequentially penetrates through the gear 302 and the second bushing 304, and is connected with the second bearing 305. The central axes of the gear seat 301, the gear 302, the mounting seat hole 3011 and the output shaft 321 of the driving motor are coaxial. The second bushing 304 is arranged between the gear 302 and the second bearing 305 and sleeved on an output shaft 321 of the driving motor to play roles of blocking and limiting; the end of the output shaft 321 of the driving motor is connected with the inner ring of the second bearing 305. The gear 302 is engaged with the rack 311, and the driving motor 32 controls the output shaft 321 of the driving motor to rotate so as to drive the gear 302 to move on the rack 311, in this embodiment, the driving motor 32 is a speed reduction motor.

In addition, in this embodiment, the first guide gap 204 and the second guide gap 205 are designed to have a width not greater than 15 mm based on engineering and technical requirements of a platform door of a relevant track, so as to meet the requirements of passengers waiting for getting on or off the train safely.

In this embodiment, the guide wheels of the guide wheel assembly 21 and the support wheels of the support wheel assembly 22 are made of hard wear-resistant non-metallic materials, so that the loss and maintenance of the guide rail are greatly reduced, and the reliability and stability of the platform door product are improved.

Under the drive of the drive unit 3, the mobile box 1 is matched with a first guide wheel guide rail pair consisting of the guide wheel assembly 21 and the guide rail seat 201, a second guide wheel guide rail pair consisting of the support wheel assembly 22 and the threshold step plate II 203 and a guide shoe guide mechanism consisting of the guide shoe assembly 23, the guide gap I204 and the guide gap II 205, and the drive motor 32 controls the gear 302 to move along the rack 311, so that the mobile box 1 is driven to slide under the guide action of the guide wheel assembly 21, the support wheel assembly 22, the guide shoe assembly 23 and the gear assembly 30, full-length guide drive is formed on the platform plate assembly 20, and the mobile box 1 is enabled to carry out full-length directional movement in a full-length guide drive system. The bearing capacity of radial wind pressure, the anti-overturning moment and the anti-torsion moment are greatly improved, and the operation stability of the platform door is further improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guide driving system of a movable box based on a platform door is characterized by comprising a full-length guide unit, a plurality of movable boxes and a plurality of driving units, wherein the full-length guide unit is laid along the edge of a platform, and the plurality of movable boxes are positioned above the full-length guide unit and are sequentially arranged along the length direction of the full-length guide unit;

2. The platform door-based mobile box guide drive system according to claim 1, wherein the guide wheel assembly passes through a guide gap near a side of the railway track, and a guide member of the guide wheel assembly clamps the platform plate assembly with a rolling gap to move the guide wheel assembly on the platform plate assembly, the guide wheel assembly and the platform plate assembly together constituting a first idler guide rail pair;

3. A platform door-based mobile box guidance drive system according to claim 1 or 2, wherein the platform plate assembly is provided with a circular arc-shaped groove at a position corresponding to the guide wheel assembly, and the groove is fitted with the optical axis guide by clearance fit.

4. The platform door-based mobile box guidance drive system of claim 3, wherein the platform plate assembly is comprised of a plurality of platform plates that are end-to-end in sequence; and one end of the optical axis guide rail installed in the groove extends out of the end surface of the platform plate to form a butt joint male head, the other end of the optical axis guide rail is recessed into the groove to form a butt joint female head, and the butt joint female head and the butt joint male head are spliced to enable the optical axis guide rail to be located on the same straight line.

5. The platform door-based mobile cassette guidance drive system of claim 3, wherein the guide wheel assembly comprises a guide wheel bracket mounted on the platform door floor and a guide member mounted on the guide wheel bracket, the guide member comprising a first guide wheel and a second guide wheel; the first guide wheel is a concave guide wheel, and the first guide wheel on the side corresponding to the optical axis guide rail is rotatably arranged on the upper part of the guide wheel bracket around the axis of the first guide wheel and is matched with the optical axis guide rail; the second guide wheel is rotatably arranged at the lower part of the guide wheel bracket around the axis of the second guide wheel on the same side with the guide wheel, and the wheel surface of the second guide wheel is abutted with the platform plate assembly;

the supporting wheel assembly comprises a supporting wheel bracket and a supporting part, the supporting wheel bracket is arranged on a platform door bottom plate, and the supporting part comprises a first supporting wheel and a second supporting wheel; the first supporting wheel is rotatably arranged at the upper part of the supporting wheel bracket around the axis of the first supporting wheel, and the wheel surface of the first supporting wheel is abutted against the platform plate assembly; the second supporting wheel is rotatably arranged at the lower part of the supporting wheel bracket around the axis of the second supporting wheel on the same side with the supporting wheel, and the wheel surface of the second supporting wheel is abutted with the platform plate assembly;

6. The platform door-based travel cassette guidance drive system of claim 5, wherein the guide shoe support has elongated protrusions on both sides of the guide shoe support in the length direction, and correspondingly, notches are formed on both sides of the inside of the guide shoe sleeve for engaging with the protrusions.

7. The platform door-based mobile box guidance drive system according to claim 1, wherein the drive unit is composed of a drive motor, a gear assembly and a rack assembly, the gear assembly comprises a gear seat and a gear, the drive motor is arranged inside the mobile box and is mounted on the gear seat, the gear seat is mounted on a bottom plate of the mobile box and passes through the guidance gap, the gear is rotatably and horizontally arranged on the gear seat below the platform plate assembly, an output shaft of the drive motor extends into the gear assembly and is connected with the gear, the gear is engaged with a rack of the rack assembly, and the gear is driven by an output shaft of the drive motor to move along the rack;

8. The platform door-based mobile box guidance drive system of claim 7, wherein the upper part of the gear wheel base is a circular double-layer flange structure with a through hole at the center, the upper flange is used for mounting the drive motor, the output shaft of the drive motor passes through the through hole to be connected with the gear wheel, and the lower flange is used for mounting the gear wheel base on the mobile box bottom plate;

9. The platform door-based traveling cassette guidance drive system of claim 8, wherein the upper flange has a diameter that is smaller than a diameter of the lower flange.

10. The platform door-based mobile box guidance drive system according to claim 8, wherein the bottom of the plate-type return structure is provided with a mounting seat hole, a bearing is installed in the mounting seat hole, a bushing is arranged between the bearing and the gear, one end of the bushing is abutted against an inner ring of the bearing, the other end of the bushing is abutted against the gear, and an output shaft of the driving motor is connected with the gear through a flat key, sequentially penetrates through the gear and the bushing, and is connected with the bearing.