CN112550317A

CN112550317A - Automatic pedal device and system for filling gaps of subway platform

Info

Publication number: CN112550317A
Application number: CN202011550366.8A
Authority: CN
Inventors: 赵志鑫; 王奋; 刘志钢; 岳修平; 徐春燕; 朱琳; 杨聚芬; 黄远春
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-03-26

Abstract

The invention relates to an automatic pedal device and a system for filling gaps of a subway platform, wherein the device comprises a rack arranged at the bottom of a shielded door along the length direction of the shielded door, a pedal arranged below the platform and a pedal telescopic transmission assembly; the pedal telescopic transmission assembly is provided with a gear, a steering gear, a coupler and a screw mechanism which are sequentially connected in a transmission manner, the screw mechanism is provided with a rotatable ball screw and a supporting seat which is connected to the ball screw and can move back and forth along with the rotation of the ball screw, the gear is meshed with a rack and is connected with the pedal, and the supporting seat is fixedly connected with the pedal and used for driving the pedal to extend out of a platform forwards and retract back into the platform in the opening and closing processes of the shielding door. Compared with the prior art, the invention does not need to additionally arrange a power source, skillfully utilizes the opening and closing of the shielding door, can realize the extension and retraction of the pedal through mechanical transmission, and the whole process is automatically carried out.

Description

Automatic pedal device and system for filling gaps of subway platform

Technical Field

The invention relates to an automatic pedal device, in particular to an automatic pedal device and an automatic pedal system for filling gaps of a subway platform.

Background

A gap is intentionally left between the subway platform and a train when the existing subway platform is designed, and the gap is used for preventing the subway platform from scratching the train body. Due to the existence of the gap, passengers can easily step in the air and get stuck in the air when getting on and off the vehicle; heavy luggage is not easy to pass through smoothly, and great impact is caused to passengers and luggage. The prior art usually attaches a rubber band to one side of the platform and adds light warning and slogan warning, but this still can not provide effective support for the gap.

Disclosure of Invention

The present invention aims to overcome the defects of the prior art and provide an automatic pedal device and system for filling the gap of the subway platform.

The purpose of the invention can be realized by the following technical scheme:

the invention provides an automatic pedal device for filling a gap of a subway platform, which is used for the platform provided with a shield door and comprises a rack arranged at the bottom of the shield door along the length direction of the shield door, a pedal arranged below the platform and a pedal telescopic transmission assembly, wherein the rack is arranged on the bottom of the shield door;

the pedal telescopic transmission assembly is provided with a gear, a steering gear, a coupler and a screw mechanism which are sequentially connected in a transmission manner, the screw mechanism is provided with a rotatable ball screw and a supporting seat which is connected to the ball screw and can move back and forth along with the rotation of the ball screw, the gear is meshed with a rack and is connected with the pedal, and the supporting seat is fixedly connected with the pedal and used for driving the pedal to extend forwards out of a platform and retract backwards into the platform in the opening and closing processes of the shielding door.

Preferably, the pedal telescopic transmission assembly is arranged on the side of the pedal.

Preferably, the tooth surface of the rack faces to the rear of the platform, and the gear is horizontally arranged.

Preferably, the steering gear is a bevel gear steering gear, and is provided with a horizontal output shaft and a vertical output shaft which are in transmission connection through a bevel gear and are perpendicular to each other, the vertical output shaft penetrates through and is fixed on the gear, and the horizontal output shaft is connected with the coupler.

Preferably, both ends of the ball screw are respectively rotatably arranged in the bearing boxes in a penetrating manner, one end of the ball screw is connected with the coupler, and the supporting seat is arranged on the ball screw between the two bearing boxes.

Preferably, a fixing rod is connected between the two bearing boxes, and the supporting seat is arranged on the fixing rod in a penetrating mode and is connected with the fixing rod in a sliding mode.

Preferably, the number of the supporting seats is two.

Preferably, the supporting seat is positioned below the pedal and fixedly connected with the bottom of the pedal through a screw.

The invention provides an automatic pedal system for filling gaps of a subway platform, which comprises the platform, a split type shielding door and the automatic pedal device.

Preferably, the bottom of two floating gates of the split shield door all is equipped with the rack, the footboard set up in with split shield door assorted position department, footboard flexible transmission assembly be equipped with two, be located the footboard both sides respectively to with the rack phase-match of the floating gate bottom of corresponding side.

Compared with the prior art, the invention has the following beneficial effects:

the shielding door is opened by sliding towards two sides and simultaneously drives the racks under the door to move back to back, the racks on the two sides drive the gears to rotate respectively, the rotation of one output shaft is converted into the rotation of the other output shaft perpendicular to the output shaft under the reversing action of the bevel gear steering device, so that the ball screw is driven to rotate, the supporting seat is driven to move left, and the pedal is driven to extend forwards, so that the pedal is enabled to fill a gap between the door and a platform, and the effect of providing effective support is achieved. When the shielding door is closed, the lower rack of the driving door moves in opposite directions, and the pedal retracts backwards under the driving of the pedal telescopic transmission assembly, so that the interference to the train operation is avoided.

According to the invention, no additional power source is needed, the opening and closing of the shielding door are skillfully utilized, the extending and retracting of the pedal can be realized through mechanical transmission, and the whole process is automatically carried out. The use of the coupling also reduces the requirements on the mounting accuracy of the steering gear and the screw mechanism.

Drawings

Fig. 1 is a schematic side view of an automatic pedal device for filling a gap in a subway platform according to embodiment 1 of the present invention.

Fig. 2 is a schematic top view of an automatic pedal device for filling a gap in a subway platform according to embodiment 1 of the present invention (for a split type screen door, fig. 2 only shows a schematic view of one screen door, and a schematic view of another screen door is symmetrical to the screen door).

In the figure, 1 is a supporting base, 2 is a coupler, 3 is a steering gear, 4 is a gear, 5 is a bearing box, 6 is a screen door, 7 is a ball screw, 8 is a pedal, 9 is a rack, 10 is a platform, and 11 is a fixing rod.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships only for convenience in describing the present invention and simplifying the 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.

Example 1

An automatic pedal device for filling gaps of subway platforms is used for a platform 10 provided with a shield door 6, and is characterized by comprising a rack 9 arranged at the bottom of the shield door 6 along the length direction of the shield door 6, a pedal 8 arranged below the platform 10 and a pedal telescopic transmission assembly, wherein the rack 9 is arranged at the bottom of the shield door 6; the pedal telescopic transmission assembly is provided with a gear 4, a steering gear 3, a coupler 2 and a screw mechanism which are sequentially connected in a transmission manner, the screw mechanism is provided with a rotatable ball screw 7 and a supporting seat 1 which is connected to the ball screw 7 and can move back and forth along with the rotation of the ball screw 7, the gear 4 is meshed with a rack 9, and the supporting seat 1 is fixedly connected with a pedal 8 and used for driving the pedal 8 to extend out of a platform 10 forwards and retract back into the platform 10 in the opening and closing processes of the screen door 6.

In practical use, a cavity for installing the device can be arranged below the front part of the platform, the pedal 8 and the pedal telescopic transmission assembly are arranged in the cavity, and in order to enable the pedal 8 to stretch and retract more smoothly and increase the bearing capacity of the pedal, a guide rail which is connected with the pedal 8 in a sliding manner can be further arranged. The length of the rack 9 can be set according to the size of the platform gap and the comprehensive consideration of factors such as gear transmission ratio, so that the distance requirement of extending and retracting of the pedal 8 can be met when the shielding door 6 is opened and closed. Preferably, the pedal telescopic transmission assembly is arranged on the side of the pedal 8, so that the interference of the pedal telescopic transmission assembly on the pedal extension is avoided.

As shown in fig. 1 and 2, the tooth surface of the rack 9 faces the rear of the platform 10 (and in the leftward direction in fig. 1), and the gear 4 is disposed horizontally. Preferably, the steering gear 3 is a bevel gear steering gear, and is provided with a horizontal output shaft and a vertical output shaft which are in transmission connection through a bevel gear and are perpendicular to each other, the vertical output shaft penetrates through and is fixed on the gear 4, and the horizontal output shaft is connected with the coupling 2. The vertical switching of the direction of rotation of the gear wheel 4 is achieved by means of the diverter 3. Two ends of the ball screw 7 are respectively rotatably arranged in the bearing boxes 5 in a penetrating way, one end of the ball screw is connected with the shaft coupling 2, and the supporting seat 1 is arranged on the ball screw 7 between the two bearing boxes 5. Be connected with dead lever 11 between two preferred bearing boxes 5, supporting seat 1 wears to locate on dead lever 11 to with dead lever 11 sliding connection, through dead lever 11 and ball 7 cooperation, realized supporting seat 1 at the slip of ball under the drive. It is further preferred that the support seats 1 are provided with two, are located below the pedal 8, and are fixedly connected with the bottom of the pedal 8 through screws.

The working process of the embodiment: when a train stops at a station, the shield door 6 slides to open towards two sides and simultaneously drives the under-door rack 9 to move backwards, the rack 9 drives the gear 4 to rotate, the rotation of the vertical output shaft of the shield door is converted into the rotation of the horizontal output shaft through the reversing action of the steering gear 3, so as to drive the ball screw 7 to rotate, further drive the supporting seat 1 to move forwards and backwards (namely the left direction and the right direction in the figure 1), further drive the pedal 8 to extend forwards, further enable the pedal 8 to fill the gap between the train door and the station 10, and play a role of providing effective support, when the train leaves the station, the shield door 6 slides to close and simultaneously drives the under-door rack 9 to move forwards, at the moment, the rack 9 drives the gear 4 to rotate, the rotation of the vertical output shaft of the train is converted into the rotation of the horizontal output shaft through the reversing action of the steering gear 3, does not obstruct the train running.

Example 2

An automatic pedal system for filling gaps of a subway platform comprises the platform 10, a split type shielding door 6 and the automatic pedal device in the embodiment 1. Preferably, the two movable doors of the split shield door 6 are respectively provided with a rack 9 at the bottom, the pedals 8 are arranged at the positions matched with the split shield door 6, and the two pedal telescopic transmission assemblies are respectively arranged at the two sides of the pedals 8 and are matched with the racks 9 at the bottoms of the movable doors at the corresponding sides. The working process is described in relation to example 1.

In the invention, the bevel gear steering gear, the coupling 2 and the bearing box 5 can adopt related products which are sold in the market.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. An automatic pedal device for filling gaps of subway platforms is used for a platform (10) provided with a shield door (6), and is characterized by comprising a rack (9) arranged at the bottom of the shield door (6) along the length direction of the shield door (6), a pedal (8) arranged below the platform (10) and a pedal telescopic transmission assembly;

the flexible transmission assembly of footboard have gear (4), steering gear (3), shaft coupling (2) and the screw mechanism that the transmission is connected in proper order, screw mechanism have rotatable ball (7) and connect on ball (7) and can rotate supporting seat (1) that back-and-forth movement is moved along with ball (7), gear (4) be connected with rack (9) meshing, supporting seat (1) and footboard (8) fixed connection for open and close in-process at shield door (6) and drive footboard (8) and stretch out platform (10) forward and retract platform (10) backward.

2. The automatic pedal device for filling gaps of subway platforms as claimed in claim 1, wherein said pedal extension transmission assembly is installed at the side of pedal (8).

3. An automatic pedal device for filling gaps at subway platforms as claimed in claim 1, wherein said rack (9) has its tooth surface facing the rear of the platform (10) and said gear (4) is horizontally disposed.

4. The automatic pedal device for filling gaps in subway platforms as claimed in claim 1 or 3, wherein said steering means (3) is a bevel gear steering means having a horizontal output shaft and a vertical output shaft which are connected by bevel gear transmission and perpendicular to each other, said vertical output shaft is inserted and fixed on the gear (4), said horizontal output shaft is connected with the coupling (2).

5. The automatic pedal device for filling up gaps between subway platforms as claimed in claim 1, wherein said ball screw (7) is rotatably inserted into said bearing housing (5) at both ends thereof, and one end thereof is connected to said shaft coupling (2), said support base (1) is disposed on said ball screw (7) between said two bearing housings (5).

6. The automatic pedal device for filling up gaps at subway platforms as claimed in claim 5, wherein a fixing rod (11) is connected between two bearing boxes (5), said supporting seat (1) is installed on the fixing rod (11) in a penetrating way and is connected with the fixing rod (11) in a sliding way.

7. The automatic pedal device for filling gaps at subway platforms according to claim 1, 5 or 6, characterized in that said support base (1) is provided in two.

8. The automatic pedal device for filling gaps of subway platforms as claimed in claim 1, wherein said supporting base (1) is located under the pedal (8) and is fixed to the bottom of the pedal (8) by screws.

9. An automatic pedal system for filling gaps of subway platforms, comprising a platform (10), a split screen door (6) and an automatic pedal device according to any one of claims 1 to 8.

10. The automatic pedal system for filling up gaps of subway platforms as claimed in claim 9, wherein said split shield door (6) has two racks (9) at the bottom of each of two sliding doors, said pedal (8) is installed at the position matching with said split shield door (6), and said two pedal extension transmission assemblies are installed at both sides of said pedal (8) and match with said racks (9) at the bottom of the sliding door at the corresponding side.