CN115217395A

CN115217395A - Platform door

Info

Publication number: CN115217395A
Application number: CN202210644951.7A
Authority: CN
Inventors: 刘红娇; 沈志军; 李毅; 张磊; 刘长和; 杨丙峰; 王圣捷
Original assignee: China Railway Design Corp
Current assignee: China Railway Design Corp
Priority date: 2022-06-08
Filing date: 2022-06-08
Publication date: 2022-10-21

Abstract

The invention discloses a platform door, which comprises a full-length guide unit laid along the edge of a platform and a plurality of movable door modules arranged in sequence along the full-length guide unit, wherein each movable door module is provided with a movable box, each movable box is matched with the full-length guide unit through a main drive module, and the left side and the right side of each movable box are respectively connected with movable doors which can stretch into the movable boxes through auxiliary drive modules; the full-length guide unit comprises a platform plate assembly, a guide wheel assembly, a supporting wheel assembly, a guide shoe assembly and a supporting assembly, wherein the guide wheel assembly, the supporting wheel assembly and the guide shoe assembly are respectively installed at the bottom of the mobile box and are matched with the platform plate assembly, so that the mobile box moves along the full-length guide unit. The invention has more stable and reliable integral operation, has the functions of automatic power-off locking, power-off memory and emergency escape, greatly improves the safety factor and greatly reduces the difficulty of site construction; the door opening position can be flexibly adjusted according to the specific train type, and the ultra-large platform door opening degree is realized.

Description

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.

Background

The rail platform door 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 from a rail area, corresponds to a train door and can open and close the movable door in a multi-stage control mode. The platform door can safely isolate the platform waiting area from the train rail running area, so that irrelevant personnel can be prevented from entering the train rail running area intentionally or unintentionally, and the waiting safety of the platform is improved. Platform doors are mainly of two types: one type is a full-facade glass partition wall and a movable door, which are arranged along the edge of a platform and two ends of the platform to separate a passenger waiting area from a train entering and stopping area, and belong to a full-enclosed type: the other type is a glass partition wall which is not covered and a movable door or a stainless steel fence door, and belongs to a semi-closed type. When the train arrives or departs, the platform door can be automatically opened and closed, so that a safe and comfortable waiting environment is created for passengers.

For urban rails such as subways and light rails, the vehicle type of a certain line is a determined single vehicle type, the relative position between the doors of each train is the same as the size of the doors, and the parking position precision can be improved by means of an ATO (automatic train operation) device, so that the shield door and the safety door used for the subway platform can be arranged according to the specific vehicle type, and the movable doors and the doors can be in one-to-one correspondence. However, high-speed railway trains and intercity trains in China have various types due to historical reasons, railway platforms face the requirement of the trains with various 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 type adaptability of the railway platform safety door is higher than that of the conventional subway safety door.

The present common operation train motorcycle type is numerous, and the door relative position of each motorcycle type, door size all differ, and traditional fixed position shield door, emergency exit mode obviously can't satisfy diversified demand for the subway shield door that only adapts to single fixed motorcycle type, emergency exit technique can't be by a large scale in railway platform application and popularization.

The Chinese patent publication No. CN212454079U discloses a movable telescopic adjusting shielding door system suitable for multi-vehicle type trains, which comprises a ground sill track, wherein a shielding door system is slidably arranged on the ground sill track, and the shielding door system comprises a movable extension shielding door module and a movable shielding door module; the movable extensible shielding door module comprises a movable side box, one side of the movable side box is provided with a telescopic extension plate and an extension plate telescopic driving device, and the other side of the movable side box is provided with a shielding door and a shielding door driving device; the movable shielding door module comprises a movable side box, and shielding doors and shielding door driving devices are arranged on two sides of the movable side box. The utility model adjusts the telescopic motion of the screen door system through the movable side box and the telescopic extension plate to adapt to the type of the coming high-speed rail vehicle, so that the screen door system can be matched with various high-speed rail vehicles; the shielding door and the telescopic extension plate can move telescopically at the side part of the movable side box, so that the shielding door can be adjusted to adapt to various vehicle types, and the shielding door can be conveniently split.

Chinese patent publication No. CN212773999U discloses a movable retractable platform door module for a high-speed rail station, which includes a movable accommodating box a, a retractable extending plate and a movable accommodating box B, wherein the left side of the retractable extending plate is retractably and movably installed in an extending plate accommodating cavity a of the movable accommodating box a, and a retractable driving device a is arranged in the extending plate accommodating cavity a of the movable accommodating box a; the right side of the telescopic extension plate is telescopically and movably arranged in an extension plate accommodating cavity B of the movable accommodating box B, and a telescopic driving device B is arranged in the extension plate accommodating cavity B of the movable accommodating box B; a walking driving device A is arranged inside the movable accommodating box A, and a walking driving device B is arranged inside the movable accommodating box B. The utility model discloses can realize the flexible regulation of length of whole portable flexible shielding module, can realize whole portable flexible shielding module walking motion through the travel driving device, through platform door drive arrangement drive platform door concertina movement, can realize the motion that opens and shuts of platform door.

The Chinese patent publication No. CN214396723U discloses a high-speed railway platform safety protection system and a telescopic device used for the system, which comprises a sill rail, wherein a plurality of movable side boxes are arranged on the sill rail, the movable side boxes are in sliding fit with the sill rail, and the movable side boxes are sequentially arranged along the length direction of the sill rail; dividing the space between any two adjacent movable side boxes into a pedestrian passage or an adjusting passage; be equipped with telescoping device in adjusting the passageway, telescoping device shelters from adjust the passageway and orders about two adjacent removal side boxes and move relatively or back to back of the body to make the width L of adjusting the passageway is adjustable. The utility model discloses relative position between two sliding doors of regulation that can be arbitrary to be adapted to the door interval of different high-speed railway vehicles.

Chinese patent publication No. CN215475076U discloses a platform door and a platform door system, the platform door includes a doorsill, a side box, a first sliding door, a second sliding door, a first transmission assembly and a second transmission assembly, the first transmission assembly drives the first sliding door and the second sliding door to switch between a closed state and an open state, the closed state, the first sliding door and the second sliding door respectively extend from two sides of the side box, the open state, the first sliding door and the second sliding door respectively retract from two sides of the side box; the second transmission assembly drives the side box to slide on the threshold. A platform door system is formed by a plurality of sets of platform doors, the plurality of sets of platform doors slide on the spliced doorsill, a train arrives at a station, the platform doors move to the train doors according to the parking positions of the train and the length of a carriage, then the platform doors are in an open state, the open positions of two adjacent platform doors are right opposite to the train doors, and the problems that the train doors are difficult to align with the sliding doors of the traditional platform doors and passengers are inconvenient to pass are solved.

Chinese patent publication No. CN111775965A discloses a underneath-driven staggered high-speed rail platform door, which comprises a plurality of movable door unit groups continuously arranged along the platform direction, each movable door unit group comprising a first movable door, a second movable door, a third movable door and a fourth movable door which are sequentially arranged in a closed state; the first movable door and the third movable door are arranged in the first row, and the second movable door and the fourth movable door are arranged in the second row; the driving devices of the first movable door and the third movable door are arranged at the bottom of the first row and staggered up and down, and the driving devices of the second movable door and the fourth movable door are arranged at the bottom of the second row and staggered up and down; the first movable door and the fourth movable door are configured to be driven by the driving mechanism to move 1 or 2 movable door widths towards the central position of the movable door unit group where the first movable door and the fourth movable door are located; the second and third movable doors are configured to be movable by 1 movable door width to the left or right thereof by the driving of the driving device thereof.

In summary, the above technology can basically realize self-adaptive adjustment of the door opening at any position, but the following defects exist for the full-length guidance of the platform door, the driving, braking and unlocking of the platform door, and the driving of the movable door:

(1) The platform door only slides on the guide rail of the threshold through the pulley, so that the required driving force is large, the running stability is poor, the anti-overturning capacity is poor, the maintenance frequency is high, and the construction difficulty of the guide rail is large;

(2) The platform door is driven only by the driving function of the platform door, the function is single, and the transmission stability and safety are poor;

(3) The platform door is difficult to lock in place, poor in braking safety, high in braking cost and inconvenient in manual unlocking operation, and does not have a power-off self-resetting function;

(4) The traditional synchronous belt-return type transmission structure between two shafts is only suitable for transmission with larger center distance between the two shafts, has large structure volume, needs large installation space, is difficult and troublesome to install, is inconvenient to adjust, has large field construction difficulty and large maintenance difficulty, and faces a great problem when being applied to a platform door with extremely tense door machine space.

Therefore, it is necessary to provide a platform door which can reduce the paving precision of the guide rail, ensure that the platform door operates stably and reliably, is automatically locked when power failure occurs, has an emergency escape function, has high safety factor, and can greatly reduce the field construction difficulty and flexibly adjust the door opening position.

Disclosure of Invention

The platform door can reduce the laying precision of the guide rail, enables the platform door to operate more stably and reliably, has the functions of automatic power-off locking and emergency escape, is high in safety factor, can greatly reduce the field construction difficulty, and can flexibly adjust the door opening position according to the parking requirements of trains of different models.

The invention is realized in such a way, and the platform door comprises a full-length guide unit laid along the edge of a platform and a plurality of movable door modules sequentially arranged along the length direction of the full-length guide unit, and is characterized in that each movable door module is provided with a movable box, each movable box is matched with the full-length guide unit through a main drive module hoisted at the bottom of the movable box, and the left side and the right side of each movable box are respectively connected with movable doors which can be stretched in the movable boxes through auxiliary drive modules;

the full-length guide unit comprises a platform plate assembly, a guide wheel assembly, a supporting wheel assembly, a guide shoe assembly and a supporting assembly, wherein the platform plate assembly is installed on the supporting assembly located below the platform plate assembly, the guide wheel assembly, the supporting wheel assembly and the guide shoe assembly are respectively installed at the bottom of the movable box and matched with the platform plate assembly, and the movable box is driven by the main drive module to move along the full-length guide unit, so that the door opening at any position and the opening degree of the door are realized.

Preferably, the platform plate assembly is formed with at least two guide gaps along the length direction; the guide wheel assembly penetrates through a guide gap close to the side of the railway track, 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; the supporting wheel assembly passes through a guide gap close to the edge side of the platform, and the supporting part of the supporting wheel assembly clamps the platform plate assembly and leaves a rolling gap so that the supporting wheel assembly moves on the platform plate assembly; the guide shoe assembly extends into any one or more of the guide gaps.

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 face of the platform plate to form a butt joint male joint, the other end of the optical axis guide rail is recessed into the groove to form a butt joint female joint, and the butt joint female joint and the butt joint male joint 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 bottom plate of the movable box, 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; and 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 against the platform plate component.

Further preferably, the supporting wheel assembly comprises a supporting wheel bracket and a supporting part, the supporting wheel bracket is mounted on the bottom plate of the mobile box, 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; and the second supporting wheel and the supporting wheel are arranged on the same side of the supporting wheel and can rotate around the axis of the second supporting wheel and are arranged at the lower part of the supporting wheel bracket, and the wheel surface of the second supporting wheel is abutted against the platform plate assembly.

Preferably, the guide shoe assembly comprises a guide shoe bracket and a guide shoe sleeve, the guide shoe bracket is mounted on the bottom plate of the movable box, and the guide shoe sleeve is nested on the guide shoe bracket.

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 bottom of the movable box is respectively provided with a hole for the guide wheel assembly, the support wheel assembly and the guide shoe assembly to pass through.

Preferably, the main driving module is installed on the bottom plate of the movable box and penetrates through a guide gap close to the edge side of the platform to be transmitted below the platform plate assembly; the main driving module comprises a rack assembly, a gear assembly and a main motor, the rack assembly is installed below the platform plate assembly, the gear assembly is installed on the bottom plate of the moving box and penetrates through a guide gap of the platform plate assembly, a gear of the gear assembly is meshed with a rack of the rack assembly, the gear is in transmission connection with the main motor, and the main motor drives the gear to move along the rack under the action of the full-length guide unit.

Further preferably, the gear assembly includes a gear seat and a gear, the main motor is installed on the gear seat, the gear seat is installed on the movable box bottom plate, the gear is horizontally arranged in the gear seat, and the gear is coaxial with the output shaft of the main motor.

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 main motor, the output shaft of the main 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 penetrates through the guide gap, and the gear is horizontally 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.

Further preferably, the bottom of the plate-type square-shaped structure is provided with a mounting seat hole, a bearing is mounted in the mounting seat hole, a bushing is arranged between the bearing and the gear, one end of the bushing is abutted to an inner ring of the bearing, the other end of the bushing is abutted to the gear, and an output shaft of the main motor is connected with the gear through a flat key, sequentially penetrates through the gear and the bushing, and is connected with the bearing.

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

Preferably, the main motor is provided with a motor braking assembly and a manual unlocking assembly, and the motor braking assembly is used for locking a motor shaft of the main motor after power failure so as to realize the in-place locking function of the door body; a motor shaft of the main motor is connected with an output shaft of the main motor; the manual unlocking assembly is used for manually unlocking the motor braking assembly to the motor shaft of the main motor, so that the motor shaft of the main motor can rotate smoothly.

Still further preferably, the motor brake assembly comprises a motor brake and an absolute value encoder, and a motor shaft of the main motor passes through the motor brake and is connected with the absolute value encoder; the motor brake is used for locking a motor shaft of the main motor after power failure, so that the in-place locking function of the door body is realized; the absolute value encoder is used for memorizing the rotation angle of the motor shaft of the main motor, outputting corresponding position parameters and having a power-off memory function.

Still further preferably, the motor brake comprises a magnetic yoke assembly, an armature, a shaft sleeve, a friction plate, a spring and a connecting plate, wherein the magnetic yoke assembly and the armature are sequentially sleeved on a motor shaft of the main motor, a spring groove for accommodating the spring is formed in the side, close to the armature, of the magnetic yoke assembly, one end of the spring is abutted against the magnetic yoke assembly, and the other end of the spring is abutted against the armature; the shaft sleeve is fixedly connected with a motor shaft of the main motor through a set screw, so that the armature can move between the shaft sleeve and the magnetic yoke assembly when power is lost, the friction plate is positioned between the connecting plate and the armature and is fixed on the armature, and the connecting plate is fixed on the main motor.

Still further preferably, the manual unlocking assembly comprises a manual unlocking wrench, the manual unlocking wrench penetrates through the magnetic yoke assembly through a connecting bolt to be connected with the armature, and the distance between the manual unlocking wrench and the motor brake is gradually increased from the side close to the connecting bolt to the side far away from the connecting bolt, so that the armature can be pulled back towards the magnetic yoke assembly by pressing the manual unlocking wrench.

Further preferably, the manual unlocking assembly further comprises a manual unlocking device and a manual unlocking steel cable, one end of the manual unlocking steel cable is connected with the manual unlocking device, and the other end of the manual unlocking steel cable is connected with the side, far away from the connecting bolt, of the manual unlocking wrench; the manual unlocking device comprises a manual unlocking handle, an unlocking connecting rod and a manual unlocking base, wherein one end of the manual unlocking handle is rotatably installed on the manual unlocking base, the other end of the manual unlocking handle is abutted against one end of the unlocking connecting rod, the unlocking connecting rod is rotatably installed on the manual unlocking base, and the other end of the unlocking connecting rod is connected with a manual unlocking steel cable.

Further preferably, two ends of the manual unlocking steel cable are movably connected with the unlocking connecting rod and the manual unlocking wrench respectively.

Still further preferably, the absolute value encoder is a gear multi-turn absolute value encoder.

Preferably, each auxiliary driving module comprises a driving device for driving the corresponding side movable door to move and stretch in the movable box and a linear guide rail assembly for enabling the corresponding side movable door to move along and stretch in the movable box; each driving device is positioned between the top of the corresponding side movable door and the movable box, and each linear guide rail assembly is positioned between the bottom of the corresponding side movable door and the movable box.

Preferably, the driving device comprises a transmission box, a synchronous toothed belt and an auxiliary motor, the transmission box is arranged at the top of the inner side of the movable box and close to the movable door at the corresponding side, the synchronous toothed belt enters and winds through a transmission wheel set in the transmission box along one end of the transmission box and then penetrates out along the other end of the transmission box, so that the synchronous toothed belt is parallel to the left side and the right side of the transmission box, and two ends of the synchronous toothed belt are arranged on the movable door through belt clamps; and the auxiliary motor is connected with the transmission case and is used for driving the transmission wheel group in the transmission case to drive the synchronous toothed belt to stretch left and right so as to drive the movable door to move left and right, and the door opening and closing action is completed.

Preferably, the transmission case comprises a case body, a case cover and a transmission wheel set, a space for mounting the transmission wheel set and the synchronous toothed belt is arranged in the case body, two ends of the case body are provided with an opening, and the case cover is fixedly covered on the case body through fastening screws; the transmission wheelset includes driving gear, driven gear and leading wheel, the driving gear is located the centre of box and directly links with the auxiliary motor, a plurality of groups of driven gear and leading wheel of bilateral symmetry installation of driving gear, the both sides of driving gear and every driven gear all are provided with the leading wheel.

Further preferably, the driving device further comprises a height adjusting device, and the height adjusting device is connected with the transmission case and used for achieving height adjustment of the driving device.

Further preferably, the height adjusting device is composed of a fine-tooth adjusting stud and a locking nut, a through hole through which the fine-tooth adjusting stud passes is formed in a box cover of the transmission box, an internal thread through hole matched with the fine-tooth adjusting stud in threaded connection is formed in a box body of the transmission box, the fine-tooth adjusting stud passes through the through hole and is in threaded connection with the box body, and then the box body and the locking nut are in threaded connection.

Still further preferably, a hexagonal head is arranged at the bottom of the fine thread adjusting stud.

Further preferably, the top of the fine thread adjusting stud is provided with an internal thread counter bore, and the driving device is mounted on the movable box through the internal thread counter bore.

It is further preferred that the length of the timing belt is determined by the actual width of the movable door.

Still further preferably, the linear guide rail assembly comprises a slide rail and a slide block, the slide rail is mounted at the bottom of the movable door, the slide block is mounted at the bottom of the movable box, and the slide rail and the slide block are matched with each other.

The invention has the advantages and positive effects that:

1. the platform door provided by the invention has the advantages that the whole platform door can run more stably and reliably, has the functions of automatic power-off locking, power-off memory and emergency escape, greatly improves the safety coefficient, and greatly reduces the field construction difficulty; the movable door modules 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 opening degree of the platform door is very large; 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 double-row guide rail guide structure and a guide shoe guide structure to be connected and matched with the movable box, and the guide wheels and the support wheel assemblies penetrate through the guide gaps to clamp the platform plate of the station up and down and are in rolling fit with the platform plate, so that the guide wheels, the support 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 can stably operate, the requirement of the platform door on resisting radial wind pressure can be better met, the anti-torsion moment and anti-overturning moment effects are improved, and the platform door can more stably and reliably operate. 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 installation accuracy requirement, low in using environment requirement and low in maintainability requirement, can play a guide role and can bear radial pressure.

3. The main driving module adopts a gear rack transmission mechanism, integrates unit transmission of all movable door modules into a set of transmission system, is arranged in a whole length manner, and has the advantages of simple structure, small structural overall dimension, stability, reliability, high safety, unlimited movement distance, capability of being in infinite butt joint and continuation and the like; the gear and rack transmission adopts a horizontal transmission mode, so that the vibration is reduced to a great extent, the transmission force is larger, the meshing motion of the gear and the rack is more stable, the transmission efficiency is high, and the motion and the braking of the movable box are easier; the underneath type structure for transmission below the full-length guide unit isolates the gear rack, has high safety factor, meets the safety requirement of passengers on getting on or off the train, simultaneously prolongs the service life of the gear rack, avoids artificial abrasion and damage caused by the exposure of the gear rack, does not interfere the main driving module, enables the movable box to be matched with the full-length guide unit, and ensures more stable operation; the upper part of the gear seat adopts a circular double-layer flange structure with a through hole at the center, the main motor and the gear seat are convenient to install and disassemble, particle sundries at a platform plate are prevented from falling into the gear, the working performance of the gear is influenced, the lower part of the gear seat adopts a plate-type return structure, the rigidity is improved through rigid connection, the gear can be well connected with the main motor and the rack, and meanwhile, the gear can be limited and restrained up and down, so that the gear can move in a small width of a guide gap of the platform plate and can play a role in auxiliary guide, the transverse bearing capacity of an output shaft of the main motor is reduced, the gear and the rack can be always kept in a good meshing state, the structure of the whole main driving module is more compact due to the unique design of the gear seat, the service life is longer, the operation stability is better, and the safety requirement of passengers on the platform door step plate when the platform cross the station is met; the main driving module moves on the through-length rack through the gear assemblies of each movable box, and can meet the platform door requirements of stopping rail platforms of multiple vehicle types through the cooperation between the main driving modules, and meet the requirements of opening doors at multiple positions or even any positions and the requirements of the functions of the platform doors opened with large opening degrees.

4. The motor brake assembly of the invention innovatively introduces a motor brake and an absolute value encoder module, and lays a hardware foundation for controlling the driving and locking functions for the platform door with bidirectional movement and indefinite travel; the design that the box body structure of the mobile box is locked is adopted in the past in a subversion mode, the box body locking function is achieved by combining a gear rack transmission mechanism and utilizing motor shaft brake locking, meanwhile, a motor brake and a manual unlocking device are innovatively developed, and the emergency escape unlocking function on the basis of the motor locking function is achieved. The main motor adopts a direct-current brushless speed reduction motor, the cost is low, the control is simple, the position information is not lost when the power is cut off, the automatic locking when the power is cut off is realized, the safety protection function of the platform door under the unexpected condition is ensured, the safety and the reliability are very high, and the problems of difficult drive control, difficult in-place locking and poor safety and reliability of the full-open movable novel platform door are fundamentally solved.

5. The auxiliary driving module is different from the prior synchronous belt transmission of two-shaft transmission, an integrated synchronous belt transmission box type structure is innovatively adopted, the transmission part of the movable door is completely integrated in the transmission box, the mounting position is flexible, the structure is compact, the transmission is stable and reliable, the safety and the reliability are realized, the installation is simple and convenient, and the auxiliary driving module is particularly suitable for a platform door with a very tight space in a movable box, and the effective space is saved. The auxiliary motor is fixed on the transmission case and directly connected with the driving gear, the rotary motion of an output shaft of the auxiliary motor is directly converted into the linear motion of the synchronous toothed belt, all door machine beams and installation female seat structures are omitted, the occupied space of the auxiliary driving module in the movable box is greatly reduced, the whole set of replacement is allowed, the maintenance efficiency of an engineering field is greatly improved, and the replacement and maintenance time is shortened. The height adjusting device is arranged, so that the height adjustment of the auxiliary driving module is convenient to realize, and meanwhile, the internal thread counter bore is formed in the height adjusting device, so that the whole auxiliary driving module is convenient to install and fix.

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 described below, and it is obvious that the drawings in the description below 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 a schematic view of a platform door according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a movable door module according to an embodiment of the present invention;

FIG. 3 is an exploded view of the movable door module and the full-length guiding unit according to the embodiment of the present invention;

FIG. 4 is a perspective view of a full length guide unit provided by an embodiment of the present invention;

FIG. 5 is a side view of a full length guide unit provided by an embodiment of the present invention;

FIG. 6 is a perspective view of a guide wheel assembly provided by an embodiment of the present invention;

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

fig. 8 is a schematic structural diagram of optical axis guide rail docking provided in the embodiment of the present invention;

FIG. 9 is a perspective view of a support wheel assembly provided by embodiments of the present invention;

FIG. 10 is an exploded view of a support wheel assembly provided by an embodiment of the present invention;

FIG. 11 is a schematic structural view of a guide shoe assembly provided by an embodiment of the present invention;

FIG. 12 is a schematic view of an installation structure of a main driving module according to an embodiment of the present invention;

FIG. 13 is a side view of a main drive module provided by an embodiment of the present invention;

FIG. 14 is an exploded schematic view of the gear assembly and main motor provided by the embodiments of the present invention;

FIG. 15 is a perspective view of a motor brake assembly and a manual unlock assembly provided by an embodiment of the present invention;

fig. 16 is a partially enlarged view of a portion a in fig. 15;

fig. 17 is a schematic structural diagram of the interior of the motor brake according to the embodiment of the present invention.

FIG. 18 is a schematic view of a driving device engaged with a movable door according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a driving device according to an embodiment of the present invention;

FIG. 20 is an exploded view of a driving device according to an embodiment of the present invention;

FIG. 21 is a schematic structural view of a fine adjustment stud provided in accordance with an embodiment of the present invention;

fig. 22 is a schematic structural view illustrating an open state of the platform door according to the embodiment of the present invention;

fig. 23 is a schematic view of another door opening state of the platform door according to the embodiment of the present invention;

fig. 24 is a schematic structural view illustrating still another open state of the platform door according to the embodiment of the present invention.

Description of the reference numerals:

1. a full length guide unit;

11. a platform plate assembly; 111. a guide rail seat; 1110. a groove; 112. a first threshold step plate; 113. a second threshold step plate; 114. a first guide gap; 115. a second guide gap; 116. an optical axis guide rail; 1611. butting a male head; 1612. butting a female joint;

12. a guide wheel assembly; 121. a guide wheel bracket; 122. a first guide wheel; 123. a second guide wheel;

13. a support wheel assembly; 131. a support wheel bracket; 132. a first supporting wheel; 133. a second supporting wheel;

14. a guide shoe assembly; 141. a guide shoe support; 1411. a protrusion; 142. a boot guide sleeve; 1421. a recess;

15. a support assembly; 16. a first bearing; 17. a circlip; 18. a first wheel shaft; 19. a first bushing; 20. fixing the bolt;

2. a movable door module;

21. moving the cartridge; 210. a mobile box bottom plate; 211. a hole;

22. a movable door;

3. a main drive module;

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

32. a gear assembly; 321. a gear seat; 3211. a through hole; 3212. mounting seat holes; 322. a gear; 323. a first flat bond; 324. a second bearing; 325. a second bushing;

33. a main motor; 331. an output shaft of the main motor; 332. a motor shaft of the main motor;

4. a motor brake; 401. a yoke assembly; 402. a sleeve 402; 403. an armature; 404. a friction plate; 405. a coupling plate; 406. a spring; 407. tightening the screw;

5. an absolute value encoder;

61. manually unlocking the wrench; 611. a connecting bolt;

62. a manual unlocking device; 621. a manual unlocking handle; 622. unlocking the connecting rod; 623. manually unlocking the base;

63. manually unlocking the wire rope;

7. a drive device;

71. a transmission case; 711. a box body; 7111. an opening; 7112. an internally threaded through-hole; 712. a box cover; 7121. a via hole; 713. a driving gear; 714. a driven gear; 715. a guide wheel; 716. a third bearing; 717. a retainer ring; 718. a flat key II; 719. a second wheel shaft; 720. a fastening screw;

72. a synchronous toothed belt; 721. a belt clip;

73. a secondary motor;

74. a height adjustment device; 741. fine thread adjusting studs; 7411. a hexagonal head; 7412. a counter bore of the internal thread; 742. locking the nut;

8. a linear guide assembly; 81. a slide rail; 82. a slide block.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 3, the present embodiment provides a platform door, where the platform door includes a full length guiding unit 1 laid along an edge of a platform and a plurality of movable door modules 2 sequentially arranged along a length direction of the full length guiding unit 1, each movable door module 2 has a movable box 21, each movable box 21 is matched with the full length guiding unit 1 through a main driving module 3 hung at a bottom of the movable box 21, and left and right sides of each movable box 21 are respectively connected to movable doors 22 that are retractable in the movable box 21 through auxiliary driving modules. The main driving module 3 is used for driving the movable box 21 to slide along the full-length guiding unit 1, and the auxiliary driving module is used for driving the movable door 22 to extend into the movable box 21. Specifically, the movable doors 22 on two sides of the movable box 21 are telescopically and movably arranged in the corresponding movable box 21 in a front-back dislocation manner, so that the movable doors 22 can be completely accommodated in the movable box 21, and the movable door module 2 has an oversized door opening. The platform door can be in communication connection with an upper computer so as to open and close the door according to the control of the upper computer.

The movable box 21 and the movable door 22 of this embodiment both include a corresponding door body and a frame, and the door body is disposed on the frame. The movement combination of removing box 21 and dodge gate 22 can realize that each dodge gate module 2 removes and opens the door according to the concrete motorcycle type of train in the optional position at the platform edge to have super large platform door opening, 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 corresponds the platform door that matches with different trains and opens the door process of closing the door.

Referring to fig. 4 to 11, the full-length guide unit 1 includes a platform board assembly 11, a guide wheel assembly 12, a support wheel assembly 13, a guide shoe assembly 14 and a support assembly 15, the platform board assembly 11 is mounted on the support assembly 15 located below the platform board assembly, the guide wheel assembly 12, the support wheel assembly 13 and the guide shoe assembly 14 are respectively mounted at the bottom of a mobile box 21 and are matched with the platform board assembly 11, holes 211 for the guide wheel assembly 12, the support wheel assembly 13 and the guide shoe assembly 14 to pass through are respectively formed at the bottom of the mobile box 21, so that the guide wheel assembly 12, the support wheel assembly 13 and the guide shoe assembly 14 are conveniently mounted, and the mobile box 21 can move along the full-length guide unit 1 in a slidable and front-back limiting manner, so as to achieve door opening and door opening at any position. The guide wheel assembly 12, the support wheel assembly 13 and the guide shoe assembly 14 are respectively matched with the platform board assembly 11, so that the mobile box 21 can move and run smoothly.

The platform plate assembly 11 is formed by a plurality of platform plates with their ends butted in sequence and laid along the platform edge so that each of the movable door modules 2 can move along the entire joined platform plate assembly 11 at the platform edge. The platform plate assembly 11 is formed with at least two guide gaps along its length, specifically as required. The guide wheel assembly 12 passes through a guide gap close to the railway track side, and a guide part of the guide wheel assembly 12 clamps the platform plate assembly 11 and leaves a rolling gap, so that the guide wheel assembly 12 moves on the platform plate assembly 11; the supporting wheel assembly 13 passes through a guide gap close to the edge side of the platform, and the supporting part of the supporting wheel assembly 13 clamps the platform plate assembly 11 and leaves a rolling gap so that the supporting wheel assembly 13 moves on the platform plate assembly 11; the guide shoe assembly 14 extends into any one or more of the guide gaps. Double guide rail guide structure adds guide shoe guide structure and is connected the cooperation with removal box 21, and guide wheel subassembly 12 and supporting wheel subassembly 13 pass centre gripping station platen about the guide clearance, and with the rolling cooperation of platform board, further guaranteed the stationarity of removal box 21 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.

In the embodiment, two guide gaps are arranged, so that the platform plate assembly 11 is composed of a guide rail seat 111, a first threshold step plate 112 and a second threshold step plate 113, the guide rail seat 111, the first threshold step plate 112 and the second threshold step plate 113 are all installed on the supporting assembly 15 positioned below the guide rail seat 111, the first threshold step plate 112 and the second threshold step plate 113, the supporting assembly 15 positioned below the first threshold step plate is fixed relative to the platform, a first guide gap 114 is reserved between the guide rail seat 111 and the first threshold step plate 112, and a second guide gap 115 is reserved between the first threshold step plate 112 and the second threshold step plate 113. The guide rail seat 111, the first threshold step plate 112 and the second threshold step plate 113 are all made of aluminum profiles.

The guide wheel assembly 12 comprises a guide wheel bracket 121 and a guide part arranged on the guide wheel bracket, the guide wheel bracket 121 is arranged on the moving box bottom plate 210, and the guide part comprises a first guide wheel 122 and a second guide wheel 123; the first guide wheel 122 is rotatably mounted on the upper portion of the guide wheel support 121 around the axis of the first guide wheel 122 through the first bearing 16, the first bushing 19, the elastic retainer 17 and the first wheel shaft 18, the second guide wheel 123 is rotatably mounted on the lower portion of the guide wheel support 121 around the axis of the first bearing 16, the first bushing 19, the elastic retainer 17 and the first wheel shaft 18, and the first guide wheel 122 and the second guide wheel 123 are located on the same side of the guide wheel support 121. Specifically, one end of the first wheel shaft 18 is fixedly connected with the guide wheel support 121, the other end of the first wheel shaft 18 is connected with the elastic retainer ring 17, the first bushing 19 is sleeved on the first wheel shaft 18, one end of the first bushing is abutted against the guide wheel support 121, the inner ring of the first bearing 16 is sleeved on the first wheel shaft 18 and abutted between the other end of the first bushing 19 and the elastic retainer ring 17, and the first guide wheel 122 is fixedly sleeved on the outer ring of the first bearing 16. The second guide wheel 123 is installed in the same manner as the first guide wheel 122.

The guide rail seat 111 is provided with an arc-shaped groove 1110 at a position corresponding to the guide wheel assembly 12, the optical axis guide rail 116 is embedded in the groove 1110 through clearance fit, the first guide wheel 122 is a concave guide wheel matched with the optical axis guide rail 116, and a concave surface of the first guide wheel 122 is in nested fit with an arc surface of the optical axis guide rail 116 to play a supporting and guiding role, so that the moving of the moving box 21 is more convenient, and the position of the moving box 21 is convenient to adjust. When the optical axis guide rail 116 is embedded in the groove 1110, one end of the optical axis guide rail 116 extends out of the end face of the platform board to form a butt joint male head 1611, the other end of the optical axis guide rail is recessed into the groove to form a butt joint female head 1612, and at the butt joint position of the platform board, the butt joint female head 1612 and the butt joint male head 1611 are spliced to enable the optical axis guide rail to be located on the same straight line; the guide rail pair composed of the optical axis guide rail 116 and the aluminum profile guide rail seat 111 is butted, extended and mutually positioned through male and female heads, is arranged in the full-length range of the platform edge, meets the requirement of full-length movement of the platform door, greatly reduces the construction difficulty, and is stable and reliable, and low in construction precision requirement.

The upper part of the guide wheel bracket 121 is mounted on the moving box bottom plate 210 through a fixing bolt 20, the lower part of the guide wheel bracket 121 penetrates through the first guide gap 114, the first guide wheel 122 is matched with the optical axis guide rail 116, the wheel surface of the second guide wheel 123 is abutted against the lower end surface of the guide rail seat 111, the first guide wheel 122 and the second guide wheel 123 vertically clamp the guide rail seat 111 and leave a rolling gap, so that the guide wheel assembly 12 moves on the guide rail seat 111 along the optical axis guide rail 116, and the guide wheel assembly 12 and the guide rail seat 111 jointly form a first guide wheel guide rail pair. The guide wheel assembly 12 passes through the guide gap to clamp the guide rail seat 111 up and down, so that the movable box 21 moves back and forth along the optical axis guide rail 116 under the guidance of the guide wheel assembly 12, the driving force for the operation of the movable box 21 is reduced, and the movable box can play a role in supporting and guiding and bears partial radial force.

The supporting wheel assembly 13 comprises a supporting wheel bracket 131 and a supporting part, the supporting wheel bracket 131 is installed on the moving box bottom plate 210, and the supporting part comprises a first supporting wheel 132 and a second supporting wheel 133; the first supporting wheel 132 is rotatably mounted on the upper portion of the supporting wheel bracket 131 around the axis of the first supporting wheel through the first bearing 16, the first bushing 19, the elastic collar 17 and the first wheel shaft 18, the second supporting wheel 133 is rotatably mounted on the lower portion of the supporting wheel bracket 131 around the axis of the second supporting wheel through the first bearing 16, the first bushing 19, the elastic collar 17 and the first wheel shaft 18, and the first supporting wheel 132 and the second supporting wheel 133 are located on the same side of the supporting wheel bracket 131. The specific installation manner of the first support wheel 132 and the second support wheel 133 is also the same as that of the first guide wheel 122.

The supporting wheel bracket 131 is installed on the moving box bottom plate 210 through a fixing bolt 20 and penetrates through the second guide gap 115, the wheel surface of the first supporting wheel 132 is abutted against the upper end surface of the second threshold step plate 113, and the wheel surface of the second supporting wheel 133 is abutted against the lower end surface of the second threshold step plate 113; the first support wheels 132 and the second support wheels 133 vertically clamp the second threshold step plate 113 and leave rolling gaps, so that the support wheel assembly 13 moves on the second threshold step plate 113, and the support wheel assembly 13 and the second threshold step plate 113 jointly form a second guide wheel guide rail pair. The supporting wheel assembly 13 penetrates through the guide gap to vertically clamp the second threshold step plate 113, so that the moving box 21 moves on the second threshold step plate 113 along the guide gap under the guidance of the supporting wheel assembly 13, the driving force for the operation of the moving box 21 is reduced, meanwhile, the supporting and guiding effects can be realized, and part of radial force is borne.

The guide shoe assembly 14 includes a guide shoe bracket 141 and a guide shoe sleeve 142, the guide shoe bracket 141 is mounted on the movable box bottom plate 210, and the guide shoe sleeve 142 is nested on the guide shoe bracket 141 and is disposed in the guide gap. Specifically, the guide shoe support 141 is provided with a long protrusion 1411 on both sides in the length direction, and correspondingly, the guide shoe sleeve 142 is provided with notches 1421 on both sides inside thereof, which are engaged with the protrusion 1411. The guide shoe support 141 is mounted on the movable box bottom plate 210 through a fixing bolt 20, and the guide shoe assembly 14 extends into the first guide gap 114 and the second guide gap 115 to form a guide shoe guide mechanism; the guide shoe assembly 14 extends into the guide gap and can act as a secondary guide and take part in the radial force as the movable box 21 moves to slide in the corresponding guide gap.

In addition, in this embodiment, the first guide gap 114 and the second guide gap 115 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 leading wheel of leading wheel subassembly 12 and the supporting wheel of supporting wheel subassembly 13 all adopt the wear-resisting non-metallic material of stereoplasm, and greatly reduced guide rail's loss and maintenance improve the reliability and the stability of platform door product.

Under the driving of the main driving module 3, the movable box 21 drives the guide wheel assembly 12, the support wheel assembly 13 and the guide shoe assembly 14 to slide on the double-row guide rail pair and in the guide gap through the cooperation of a first guide wheel guide rail pair formed by the guide wheel assembly 12 and the guide rail seat 111, a second guide wheel guide rail pair formed by the support wheel assembly 13 and the threshold step plate two 113, and a guide shoe guide mechanism formed by the guide shoe assembly 14, the guide gap one 114 and the guide gap two 115, so as to form full-length guide, and enable the movable door module 2 to perform full-length directional movement in the full-length guide unit 1. 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 improved.

To better control the smooth movement of the mobile box 21, the guide gap through which the guide wheel assembly 12 and the main drive module 3 pass is different.

Referring to fig. 12 to 14, the main driving module 13 is mounted on the bottom plate of the movable box 21 and passes through the second guiding gap 115 to the lower part of the platform plate assembly 11 for transmission; the main driving module 3 comprises a rack assembly 31, a gear assembly 32 and a main motor 33, the rack assembly 31 comprises a rack seat 311 and a rack 312, the rack seat 311 is an aluminum profile rack seat, and is mounted on the supporting assembly 15 below the platform plate assembly 11 and serves as a structural foundation of the main driving module 3; the rack 312 is installed on the rack seat 311 and located below the platform plate assembly 11, and the rack 312 is aligned and butted through the flanges of the rack seat 311, so that full-length butt joint is realized. The gear assembly 32 is installed on the moving box bottom plate 210 and penetrates through the second guide gap 115, so that the gear 322 of the gear assembly 32 is meshed with the rack 312 of the rack assembly 31, the gear 322 is in transmission connection with the main motor 33, and the gear 322 is driven by the main motor 33 to move along the rack 312 under the action of the full-length guide unit 1. Adopt rack and pinion drive mechanism, be integrated into a set of transmission system with the unit transmission of all dodge gate modules 2, lead to long arranging, have simple structure, structure overall dimension little, reliable and stable, the security is high, the movement distance is unrestricted, can infinitely dock advantages such as continuation. And main drive module 3 adopts and carries out driven formula structure of putting down in full length guide unit 1 below, it is isolated with external environment with rack and pinion through platform board subassembly 11, effectively avoid the damage of pollutant and artificial condition to rack 312, factor of safety is high, and satisfy the security requirement that the passenger went on or off the train, the rack and pinion life-span has been improved simultaneously, the artificial wearing and tearing and the damage of having avoided rack and pinion to expose the bring, make can not produce the interference to main drive module 3, improve driven reliability and security, and make once more remove box 21 and full length guide unit 1 cooperation, guarantee to operate more steadily.

The gear assembly 32 comprises a gear seat 321 and a gear 322, the main motor 33 is installed on the gear seat 321, the upper portion of the gear seat 321 is installed on the movable box bottom plate 210, the lower portion of the gear seat 321 penetrates through the second guide gap 115, the gear 322 is horizontally arranged in the lower portion of the gear seat 321, and the gear 322 is coaxial with the output shaft 331 of the main motor. The gear and rack transmission adopts a horizontal transmission mode, so that the vibration is reduced to a great extent, the transmission force is larger, the gear and rack meshing motion is more stable, the transmission efficiency is high, and the motion and the braking of the movable box 21 are easier.

The upper portion of pinion stand 321 is the circular double-deck formula ring flange structure of central band-pass hole, and the pinion stand 321 of being convenient for is connected fixedly with main motor 33 and removal box bottom plate 210 respectively, and the upper flange dish is used for the installation main motor 33, the output shaft 331 of main motor passes the through-hole and is connected with gear 322, and the lower floor's ring flange is used for installing pinion stand 321 on removing box bottom plate 210, the diameter of upper flange dish is less than the diameter of lower floor's ring flange, easy to assemble and dismantlement main motor 33 and pinion stand 321. The lower part of the gear seat 321 is of a plate-type square-shaped structure, the lower part of the gear seat 321 is vertically arranged and rigidly connected with the upper part of the gear seat 321, the rigidity is improved, the upper part of the gear seat 321 covers the lower part of the gear seat 321, and the influence on the working performance of the gear 322 caused by the falling of particle impurities at a platform plate into the gear 322 is avoided. The lower portion of the gear seat 321 penetrates through the second guide gap 115 and extends downwards to the lower portion of the platform plate assembly 11, the gear 322 is arranged on the lower portion of the inner side of the plate-type return structure, the gear 322 can be well connected with the main motor 33 and the rack 312, meanwhile, the gear 322 can be limited and restrained vertically, safety, stability and reliability are achieved, the small width of the platform plate guide gap can be adapted to move, the auxiliary guide effect can be achieved, meanwhile, the transverse bearing capacity of the output shaft 331 of the main motor is reduced, the gear and the rack can be kept in a good meshing state all the time, the whole gear seat 321 enables the structure of the whole main driving module 3 to be more compact, 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 is met.

A mounting seat hole 3212 is formed in the center of the bottom of the plate-type square-shaped structure, a second bearing 324 is mounted in the mounting seat hole 3212, a second bushing 325 is arranged between the second bearing 324 and the gear 322, one end of the second bushing 325 abuts against the inner ring of the second bearing 324, the other end of the second bushing abuts against the gear 322, and the output shaft 331 of the main motor penetrates through the through hole 3211, is connected with the gear 322 through a first flat key 323, penetrates through the gear 322 and the second bushing 325 in sequence, and is connected with the second bearing 324. The second bushing 325 is arranged between the gear 322 and the second bearing 324 and sleeved on the output shaft 331 of the main motor to play roles of blocking and limiting; the end of the output shaft 331 of the main motor is connected with the inner ring of the second bearing 324. The gear 322 is engaged with the rack 312, and the main motor 33 drives the output shaft 331 of the main motor to rotate, so as to drive the gear 322 to move on the rack 312, in this embodiment, the main motor 33 is a dc brushless speed reducing motor.

The main driving module 3 of each moving box 21 is fixed on the moving box bottom plate 210 and extends out of a set of gear assemblies 32, and each set of gear assemblies 32 together with the main motor 33 move on the racks 312 which are in full length butt joint with the moving box 21. And through the cooperation between each main drive module 3 to only after every removal box 21 motion of mutually supporting, just can solve the platform door demand that multi-vehicle type stopped the track platform, satisfy the multiposition even arbitrary position demand of opening the door and the platform door function demand that the wide-open degree was opened the door.

Referring to fig. 15 to 17, the main motor 33 is provided with a motor braking assembly and a manual unlocking assembly, and the motor braking assembly is used for locking a motor shaft 332 of the main motor after power failure, so as to realize a door in-place locking function; the motor shaft 332 of the main motor is connected with the output shaft 331 of the main motor; the manual unlocking assembly is used for manually unlocking the motor shaft 332 of the main motor from the motor braking assembly, so that the motor shaft 332 of the main motor can rotate smoothly. The motor brake assembly and the manual unlocking assembly are introduced, so that the locking of a power-off motor is realized, and meanwhile, the emergency escape unlocking function on the basis of the motor locking function is realized, and the problems of difficult drive control, difficult in-place locking and poor safety and reliability of a fully-open movable novel platform door are fundamentally solved.

The motor brake assembly comprises a motor brake 4 and an absolute value encoder 5, a motor shaft 332 of the main motor penetrates through the motor brake 4 and is connected with the absolute value encoder 5, and the motor brake 4 is used for locking the motor shaft 332 of the main motor after power failure, so that the door body in-place locking function is realized; the absolute value encoder 5 is used for memorizing the rotation angle of the motor shaft 332 of the main motor, outputting corresponding position parameters, and has a power-off memory function, so that even if the door body is manually moved after power-off, an accurate relative zero position can be obtained according to specific position information output by the absolute value encoder 5 after power restoration. The absolute value encoder 5 is a gear multi-turn absolute value encoder, and the specific model can be selected from Shanghai \, 281565613/12-0.5-10/28-SGM-65-B absolute value encoders. By introducing the motor brake 4 and the absolute value encoder 5 module, a hardware basis for controlling the driving and locking functions is laid for the platform door with bidirectional movement and indefinite travel; the prior design of locking the structure of the movable box 21 is overturned, and the locking function of the box body is realized by combining a gear rack transmission mechanism and utilizing the braking locking of a motor shaft. The main motor 33 adopts a direct-current brushless speed reducing motor, is low in cost, simple to control, free from losing position information in power failure, capable of being automatically locked in power failure, capable of guaranteeing the safety protection function of the platform door in an accident situation, and high in safety and reliability.

The motor brake 4 comprises a magnetic yoke assembly 401, an armature 403, a shaft sleeve 402, a friction plate 404, a spring 406 and a connecting plate 405, wherein the magnetic yoke assembly 401 and the armature 403 are sequentially sleeved on a motor shaft 332 of a main motor, a spring groove for accommodating the spring 406 is arranged on the side, close to the armature 403, of the magnetic yoke assembly 401, one end of the spring 406 is abutted against the magnetic yoke assembly 401, and the other end of the spring 406 is abutted against the armature 403; the bushing 402 is fixed to the motor shaft 332 of the main motor by a set screw 407 so that the armature 403 can move between the bushing 402 and the yoke assembly 401 when power is lost, the friction plate 404 is located between the coupling plate 405 and the armature 403 and fixed to the armature 403, and the coupling plate 405 is fixed to the main motor 33. Under the condition of electrification, the magnetic yoke assembly 401 attracts the armature 403, a gap is reserved between the friction plate 404 and the connecting plate 405, and the motor shaft 332 of the main motor rotates smoothly; after power failure, the magnetic yoke assembly 401 loses effect, the adsorption force between the magnetic yoke assembly 401 and the armature 403 disappears, the spring 406 recovers deformation and extrudes the armature 403, the friction plate 404 is attached to the connecting plate 405, the motor shaft 332 of the main motor is braked, and the effect of power failure braking is achieved.

The manual unlocking assembly comprises a manual unlocking wrench 61, the manual unlocking wrench 61 penetrates through the magnetic yoke assembly 401 through a connecting bolt 611 to be connected with the armature 403, the distance between the manual unlocking wrench 61 and the motor brake 4 is gradually increased from the side close to the connecting bolt 611 to the side far away from the connecting bolt 611, and therefore the armature 403 can be pulled back towards the magnetic yoke assembly 401 by pressing the manual unlocking wrench 61. At this time, a gap is generated between the friction plate 404 and the coupling plate 405, the motor shaft 332 of the main motor rotates smoothly, the main motor 33 is in a free state, the unlocking is successful, and the movable box 21 can be moved arbitrarily. The manual unlocking assembly solves the emergency escape function of the platform door.

For more convenient operation, the manual unlocking assembly further comprises a manual unlocking device 62 and a manual unlocking steel cable 63, wherein one end of the manual unlocking steel cable 63 is movably connected with the manual unlocking device 62, and the other end of the manual unlocking steel cable is movably connected with the side, far away from the connecting bolt 611, of the manual unlocking wrench 61; manual unlocking device 62 includes manual unblock handle 621, unblock connecting rod 622 and manual unblock base 623, the rotatable installation of manual unblock handle 621 one end is on manual unblock base 623, and the manual unblock handle 621 other end and unblock connecting rod 622 one end butt, the rotatable installation of unblock connecting rod 622 is on manual unblock base 623, unblock connecting rod 622 other end and manual unblock cable 63 swing joint. The manual unlocking handle 621 of the manual unlocking device 62 is pressed to drive the unlocking connecting rod 622 to rotate, the unlocking connecting rod 622 pulls the manual unlocking steel cable 63, the other end of the manual unlocking steel cable 63 drives the pressing manual unlocking wrench 61, the armature 403 of the motor brake 4 is pulled back, the motor brake 4 is released, the motor shaft 332 of the main motor is unlocked by the motor brake 4, and the motor shaft 332 of the main motor rotates smoothly.

When the platform door system receives a door opening instruction and calls corresponding door unit position parameters, the system drives the direct-current brushless speed reducing motor to rotate so that the moving box 21 reaches a specific position, the position of the moving box 21 is checked according to position information in the absolute value encoder 5, the motor brake 4 is de-energized after the moving box 21 reaches a required position, the motor output shaft is locked, and the moving box 21 achieves the in-place locking function.

The position information of the absolute value encoder 5 is determined by the mechanical position, and when power failure and electric signal loss occur, the system can determine the specific position of the movable box 21 after power restoration and continue to complete the next action.

Manual unblock cable wire 63 one end is connected with manual unlocking means 62, and one end is connected with manual unblock spanner 61, touches and presses manual unlocking means 62, and manual unblock cable wire 63 compresses tightly manual unlocking spanner 61, releases motor brake 4, and direct current brushless gear motor belongs to free state this moment, and removal box 21 can remove wantonly.

Referring to fig. 3 and 18 to 21, the auxiliary driving module includes a driving device 7 for driving the corresponding side movable door 22 to move and extend into the movable box 21, and a linear guide assembly 8 for moving the corresponding side movable door 22 along and extending into the movable box 21; the driving device 7 is located between the top of the corresponding side movable door 22 and the movable box 21, and the linear guide assembly 8 is located between the bottom of the corresponding side movable door 22 and the movable box 21. The movable door 22 runs stably, safely and reliably through the driving device 7 and the linear guide rail assembly 8.

The driving device 7 comprises a transmission case 71, a synchronous toothed belt 72 and an auxiliary motor 73, wherein the transmission case 71 is installed at the top of the inner side of the moving box 21 and is close to the movable door 22 at the corresponding side, the synchronous toothed belt 72 enters and winds through a transmission wheel set in the transmission case 71 along one end of the transmission case 71 and then penetrates out along the other end of the transmission case 71, so that the synchronous toothed belt 72 is parallel to the left side and the right side of the transmission case 71, and two ends of the synchronous toothed belt 72 are clamped and installed on the movable door 22 through a belt 721; the auxiliary motor 73 is connected with the transmission case 71 and used for driving a transmission wheel set in the transmission case 71 to drive the synchronous toothed belt 72 to stretch left and right so as to drive the movable door 22 to move left and right, and thus door opening and closing actions are completed. The transmission part of the movable door 22 is completely integrated in the transmission box 71, so that the transmission box 71 has a compact structure, a flexible installation position and simple and convenient installation, is particularly suitable for a platform door with a very tense space in the movable box 21, and saves effective space.

The transmission case 71 comprises a case body 711, a case cover 712 and transmission wheel sets, a space for mounting the transmission wheel sets and a synchronous toothed belt 72 to pass around is arranged in the case body 711, two ends of the case body 711 are provided with an opening 7111, and the case cover 712 is fixedly covered on the case body 711 through fastening screws 720; the transmission wheel group comprises a driving gear 713, a driven gear 714 and a guide wheel 715, and the driven gear 714 and the guide wheel 715 are both rotatably arranged in the box body 711; the driving gear 713 is located in the middle of the box 711 and directly connected with the sub-motor 73, a plurality of sets of driven gears 714 and guide wheels 715 are symmetrically installed on two sides of the driving gear 713, and the guide wheels 715 are arranged on two sides of the driving gear 713 and two sides of each driven gear 714. The transmission is ensured to be stable and reliable through the transmission of the transmission wheel set; the auxiliary motor 73 is directly connected with the driving gear 713, the rotary motion of an output shaft of the auxiliary motor 73 is directly converted into the linear motion of the synchronous toothed belt 72, all door machine beams and installation female seat structures are omitted, the occupied space of an auxiliary driving module in the movable box 21 is greatly reduced, the whole set of replacement is allowed, the maintenance efficiency of an engineering field is greatly improved, and the replacement and maintenance time is shortened. The sub motor 73 in the present embodiment is a reduction motor.

The driving gear 713 is installed in the box 711 through three bearings 716 and a retaining ring 717, the inner ring of the three bearings 716 is sleeved on the axle of the driving gear 713, and the outer ring of the three bearings 716 is abutted against the retaining ring 717. In this embodiment, a set of driven gears 714 are symmetrically installed on two sides of the driving gear 713, each driven gear 714 is installed on a corresponding wheel shaft through a flat key two 718, two ends of each wheel shaft are respectively connected with an inner ring of a bearing three 716, an outer ring of a lower bearing three 716 is fixed on the box body 711, and an outer ring of an upper bearing three 716 is abutted against a retaining ring 717; the guide wheels 715 are symmetrically arranged between the driving gear 713 and the driven gear 714 and at an opening 7111 at the end part of the box 711, each guide wheel 715 is arranged on a corresponding axle two 719 through a flat key two 718, two ends of each axle two 719 are respectively connected with an inner ring of a bearing three 716, an outer ring of a lower bearing three 716 is fixed on the box 711, and an outer ring of an upper bearing three 716 is abutted against a retaining ring 717.

The length of the timing belt 72 is determined by the actual width of the shutter 22. The timing belt 72 enters along the opening 7111 at one end of the box 711, sequentially passes through each driving wheel in a certain direction and sequence, and then passes out along the opening 7111 at the other end of the box 711, so that the timing belt 72 is parallel to the left and right sides of the box 711.

The driving device 7 further comprises a height adjusting device 74, and the height adjusting device 74 is connected with the transmission case 71 and is used for realizing height adjustment of the driving device 7. The height adjusting device 74 is composed of a fine-thread adjusting stud 741 and a locking nut 742, a through hole 7121 through which the fine-thread adjusting stud 741 passes is formed in the case cover 712 of the transmission case 71, an internal thread through hole 7112 matched with the fine-thread adjusting stud 741 in a threaded connection mode is formed in the case body 711 of the transmission case 71, and the fine-thread adjusting stud 741 passes through the through hole 7121 to be in a threaded connection with the case body 711 and then passes through the case body 711 to be in a threaded connection with the locking nut 742. The bottom of the fine thread adjusting stud 741 is provided with a hexagonal head 7411. The fine thread adjusting stud 741 passes through the through hole 7121 of the box cover 712, is in threaded connection and matching with the internal thread through hole 7112 on the box body 711, and rotates the fine thread adjusting stud 741 clockwise or anticlockwise through the hexagonal head 7411 to achieve the purpose of height adjustment. The height adjusting device 74 is provided to enable free adjustment of the height of the drive device 7. Two height adjustment devices 74 are provided in this embodiment, symmetrically mounted.

The top of the fine thread adjusting stud 741 is provided with an internal thread counterbore 7412, and the driving device 7 is mounted on the movable box 21 through the internal thread counterbore 7412. So that the whole driving device 7 can be mounted on the movable box 21 through the internal screw-threaded counter bore 7412, and the mounting and fixing are convenient.

The linear guide rail assembly 8 comprises a slide rail 81 and a slide block 82, the slide rail 81 is installed at the bottom of the movable door 22, the slide block 82 is installed at the bottom of the movable box 21, and the slide rail 81 and the slide block 82 are matched with each other. The linear guide rail assembly 8 plays a role in guiding and supporting the movement of the movable door 22, and further ensures the running stability of the movable door 22.

The two ends of the part of the synchronous toothed belt 72, which is exposed out of the box body 711, are mounted on the movable door 22 through belt clamps, the transmission box 71 is mounted at the top of the movable box 21, and the synchronous toothed belt 72 is driven by the auxiliary motor 73 to stretch left and right to drive the movable door 22 to slide left and right under the support and guide of the linear guide rail assembly 8, so that the door opening and closing action is completed.

The platform door control system records the information of each type and marshalling of train and the corresponding door opening position parameters of the movable door module 2 (door unit) in advance. Before a train arrives at a station, the type and marshalling information of the train currently arriving at the station are obtained in advance through a main control center, a platform door control system calls corresponding door opening parameters, the distance between the current position of each door unit and a target position is judged, an instruction is output to a door unit controller, if the current position of each door unit is the same as the target position, a main driving module 3 is locked, a movable box 21 is fixed at the current position, and only an auxiliary driving module is controlled to control the movable door 22 to be opened and closed. If the door units are not consistent with the target position, the main driving module 3 is controlled to drive the movable box 21 to move to the target position, and meanwhile, the auxiliary driving module is controlled to drive the movable door 22 to make corresponding movement, and the door units are mutually matched, so that the door body is opened at the position corresponding to the train door.

Referring to fig. 22-24, examples of typical door opening methods for platform doors are shown. Fig. 22 shows a 2m opening of the platform, in which case the main driving module 3 of each door unit receives a control command and is in a locked state, so that the position of each moving box 21 is kept unchanged; the auxiliary driving module is matched with the linear guide rail assembly 8 to control the movable door 22 to do contraction movement relative to the movable box 21, so that the switching of the door opening and closing states is realized. Fig. 23 shows the form of the platform door opening needing to be adjusted to 4m, in this case, the position of a certain door unit relative to the platform door is changed, firstly, the movable door 22 of the door unit needs to be retracted in the movable box 21 by controlling the auxiliary driving module, then, the movable box 21 is driven to move towards the door unit on the side adjacent to the door unit by controlling the main driving module 3, so that the two door units are adjacently arranged and combined into a new door unit, and at this time, the form of the 4m opening is formed between the door unit and the door unit on the other side, the door opening action is completed, and in the whole movement process, the main driving module 3 of the door unit without the position adjustment is in a locking state; similarly, the door closing motion acts as the inverse of the control process. Fig. 24 shows a form in which the opening degree of the platform is adjusted to 6m, in this case, in addition to the control in the case of fig. 24, the door unit on the other side is adjusted to move to the other side door unit in the same manner, thereby forming the opening degree form of 6m therein.

It should be noted that the above three cases are only common opening forms, and in the actual process corresponding to the vehicle type, more flexible door opening positions and opening forms may be required.

In conclusion, the platform door provided by the invention enables the whole platform door to operate more stably and reliably, has the functions of automatic power-off locking, power-off memory and emergency escape, greatly improves the safety coefficient, and greatly reduces the difficulty of site construction; the movable door modules 2 can move and open the door at any position of the platform edge according to the specific train type, the door opening position can be flexibly adjusted, and the platform door has an ultra-large platform door opening; 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.

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 platform door comprises a full-length guide unit laid along the edge of a platform and a plurality of movable door modules sequentially arranged along the length direction of the full-length guide unit, and is characterized in that each movable door module is provided with a movable box, each movable box is matched with the full-length guide unit through a main driving module hoisted at the bottom of the movable box, and the left side and the right side of each movable box are respectively connected with movable doors which can stretch into the movable boxes through auxiliary driving modules;

2. A platform door according to claim 1, wherein the platform plate assembly is formed with at least two guide gaps throughout its length; the guide wheel assembly penetrates through a guide gap close to the side of the railway track, 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; the supporting wheel assembly passes through a guide gap close to the edge side of the platform, and the supporting part of the supporting wheel assembly clamps the platform plate assembly and leaves a rolling gap so that the supporting wheel assembly moves on the platform plate assembly; the guide shoe assembly extends into any one or more of the guide gaps.

3. A platform door according to claim 1 or claim 2, wherein the platform plate assembly is provided with a circular arc-shaped recess in a position corresponding to the guide wheel assembly, and the optical axis guide is fitted in the recess with clearance fit.

4. A platform door according to claim 3, wherein the platform plate assembly is comprised of a plurality of platform plates with their ends 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.

5. A platform door according to claim 3, wherein the guide wheel assembly comprises a guide wheel bracket mounted on the mobile cassette 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; and 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 against the platform plate component.

6. A platform door according to claim 2, wherein the support wheel assembly comprises a support wheel bracket mounted on the mobile cassette floor and a support member comprising a first support wheel and a second support 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; and the second supporting wheel and the supporting wheel are arranged on the same side of the supporting wheel and can rotate around the axis of the second supporting wheel and are arranged at the lower part of the supporting wheel bracket, and the wheel surface of the second supporting wheel is abutted against the platform plate assembly.

7. A platform door according to claim 1 or claim 2, wherein the guide shoe assembly comprises a guide shoe bracket mounted on the mobile box floor and a guide shoe sleeve nested on the guide shoe bracket.

8. A platform door according to claim 7, wherein elongate projections are provided on both sides of the shoe support in the longitudinal direction, and correspondingly recesses are provided on both sides of the inside of the shoe cover for engaging with the projections.

9. A platform door according to claim 1 or claim 2, wherein the bottom of the mobile box is provided with a hole through which each of the guide wheel assembly, the support wheel assembly and the guide shoe assembly passes.

10. The platform door of claim 2, wherein the main drive module is mounted on the bottom plate of the mobile box and drives the platform plate assembly through a guide gap near the edge side of the platform; the main driving module comprises a rack assembly, a gear assembly and a main motor, the rack assembly is installed below the platform plate assembly, the gear assembly is installed on the bottom plate of the moving box and penetrates through a guide gap of the platform plate assembly, a gear of the gear assembly is meshed with a rack of the rack assembly, the gear is in transmission connection with the main motor, and the main motor drives the gear to move along the rack under the action of the full-length guide unit.

11. A platform door according to claim 10, wherein the gear assembly comprises a gear seat and a gear, the main motor is mounted on the gear seat, the gear seat is mounted on the movable box floor, the gear is horizontally disposed in the gear seat, and the gear is coaxial with an output shaft of the main motor.

12. A platform door according to claim 11, wherein the gear wheel carrier has a circular double-layer flange structure with a through hole at the center, the upper flange is used for mounting the main motor, the output shaft of the main motor passes through the through hole to be connected with the gear wheel, and the lower flange is used for mounting the gear wheel carrier on the bottom plate of the mobile box;

the lower part of the gear seat is of a plate-type square-shaped structure, the plate-type square-shaped structure penetrates through the guide gap, and the gear is horizontally arranged on the lower part of the inner side of the plate-type square-shaped structure;

13. A platform door according to claim 12, wherein the upper flange has a diameter less than the diameter of the lower flange.

14. A platform door according to claim 12, wherein the bottom of the plate-type return structure is provided with a mounting hole, a bearing is mounted in the mounting hole, a bushing is arranged between the bearing and the gear, one end of the bushing is abutted against the inner ring of the bearing, the other end of the bushing is abutted against the gear, and the output shaft of the main motor is connected with the gear through a flat key, sequentially passes through the gear and the bushing, and is connected with the bearing.

15. A platform door according to claim 10, wherein the rack assembly includes a rack mount mounted on the support assembly below the platform plate assembly and a rack mounted on the rack mount, the rack being aligned for full length docking by the flanges of the rack mount.

16. The platform door according to claim 10, wherein the main motor is provided with a motor brake assembly and a manual unlocking assembly, and the motor brake assembly is used for locking a motor shaft of the main motor after power failure so as to realize the in-place locking function of the door body; a motor shaft of the main motor is connected with an output shaft of the main motor; the manual unlocking assembly is used for manually unlocking the motor braking assembly to the motor shaft of the main motor, so that the motor shaft of the main motor can rotate smoothly.

17. A platform door according to claim 16, wherein the motor brake assembly comprises a motor brake and an absolute encoder, the motor shaft of the primary motor passing through the motor brake and being connected to the absolute encoder; the motor brake is used for locking a motor shaft of the main motor after power failure, so that the in-place locking function of the door body is realized; the absolute value encoder is used for memorizing the rotation angle of the motor shaft of the main motor, outputting corresponding position parameters and having a power-off memory function.

18. A platform door according to claim 17, wherein the motor brake comprises a yoke assembly, an armature, a shaft sleeve, a friction plate, a spring and a coupling plate, the yoke assembly and the armature are sequentially sleeved on the motor shaft of the main motor, the yoke assembly is provided with a spring groove for accommodating the spring at a side close to the armature, one end of the spring abuts against the yoke assembly, and the other end abuts against the armature; the shaft sleeve is fixedly connected with a motor shaft of a main motor through a set screw, so that the armature can move between the shaft sleeve and the magnetic yoke assembly when power is lost, the friction plate is positioned between the connecting plate and the armature and fixed on the armature, and the connecting plate is fixed on the main motor.

19. The platform door of claim 16, wherein the manual release assembly includes a manual release wrench coupled to the armature through the yoke assembly via a coupling bolt, the manual release wrench being spaced from the motor brake by a distance that increases from a side closer to the coupling bolt to a side further from the coupling bolt, such that pressing the manual release wrench pulls the armature back toward the yoke assembly.

20. The platform door of claim 19, wherein the manual unlocking assembly further comprises a manual unlocking device and a manual unlocking cable, the manual unlocking cable having one end connected to the manual unlocking device and one end connected to a side of the manual unlocking wrench away from the connecting bolt; the manual unlocking device comprises a manual unlocking handle, an unlocking connecting rod and a manual unlocking base, wherein one end of the manual unlocking handle is rotatably installed on the manual unlocking base, the other end of the manual unlocking handle is abutted against one end of the unlocking connecting rod, the unlocking connecting rod is rotatably installed on the manual unlocking base, and the other end of the unlocking connecting rod is connected with a manual unlocking steel cable.

21. A platform door according to claim 20, wherein the ends of the manual release cable are movably connected to the release link and the manual release wrench, respectively.

22. A platform door according to claim 16, wherein the absolute value encoder is a geared multi-turn absolute value encoder.

23. A platform door according to claim 1, wherein each secondary drive module includes drive means for driving the respective side flap to move telescopically within the moving box and a linear guide assembly for moving the respective side flap therealong telescopically within the moving box; each driving device is positioned between the top of the corresponding side movable door and the movable box, and each linear guide rail assembly is positioned between the bottom of the corresponding side movable door and the movable box.

24. A platform door according to claim 23, wherein the drive means comprises a gear box, a synchronous cog belt and a secondary motor, the gear box is mounted at the top of the inner side of the moving box and close to the movable door at the corresponding side, the synchronous cog belt enters and winds through a gear wheel set in the gear box along one end of the gear box and then penetrates out along the other end of the gear box, so that the synchronous cog belt is in a parallel direction at the left and right sides of the gear box, and the two ends of the synchronous cog belt are mounted on the movable door through belt clips; and the auxiliary motor is connected with the transmission case and is used for driving the transmission wheel group in the transmission case to drive the synchronous toothed belt to stretch left and right so as to drive the movable door to move left and right, and the door opening and closing action is completed.

25. A platform door according to claim 24, wherein the drive housing includes a housing, a housing cover, and a drive wheel set, wherein a space for mounting the drive wheel set and a synchronous cog belt is provided in the housing, both ends of the housing are provided with an opening, and the housing cover is fixed to the housing cover by a fastening screw; the transmission wheelset includes driving gear, driven gear and leading wheel, the driving gear is located the centre of box and directly links with the auxiliary motor, a plurality of groups of driven gear and leading wheel of bilateral symmetry installation of driving gear, the both sides of driving gear and every driven gear all are provided with the leading wheel.

26. A platform door according to claim 24, wherein the drive means further comprises height adjustment means connected to the gear box for effecting height adjustment of the drive means.

27. A platform door according to claim 26, wherein the height adjustment means comprises a fine adjustment stud and a lock nut, a through hole through which the fine adjustment stud passes is provided on the cover of the transmission case, an internally threaded through hole in threaded engagement with the fine adjustment stud is provided on the case body of the transmission case, and the fine adjustment stud passes through the through hole to be in threaded engagement with the case body and then passes through the case body to be in threaded engagement with the lock nut.

28. A platform door according to claim 27, wherein the bottom of the fine pitch adjustment stud is provided with a hex head.

29. A platform door according to claim 27, wherein the fine pitch adjustment stud has an internally threaded counter bore in its top, and the drive means is mounted on the mobile cassette by means of the internally threaded counter bore.

30. A platform door according to claim 24, wherein the length of the synchronising toothed belt is determined by the actual moveable door width.

31. A platform door according to claim 23, wherein the linear guide assembly includes a slide rail mounted to the bottom of the moveable door and a slide block mounted to the bottom of the mobile box, the slide rail and slide block cooperating with each other.