JPH0542869A - Step device of platform - Google Patents

Abstract

PURPOSE:To prevent passengers from dropping even if passengers stand on the step member during the shift of a step member or when a drive section is broken by moving the step member so that it may always keep itself parallel with the top surface of a platform. CONSTITUTION:In lifting a lifting operation part 5, first of all, a hydraulic cylinder 16 is stretched to rotate a parallel link 13, as a result, a slide base 3 moves from a mounting frame 1 to the gap between a train 9 and platform 8. In the next step, when a hydraulic cylinder 21 is stretched, crossing angle of members 19 and 20 is made to change, lifting a lifting member 5, as a result, the stepping member 6 on the lifting member 5 is made to lift always keeping its position parallel with the top face of the platform 8 and stops at the position where matches the top surface of the platform 5. With this constitution, even if an exit and entrance driving section 4 or lift drive section 7 are broken, there is not such a danger that passengers drop.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed on, for example, a curved platform or a platform on which vehicles with different widths are parked when there is a gap between the railway vehicle and the platform where passengers may fall. Platform step device.

[0002]

2. Description of the Related Art As such a conventional step device,
For example, there is one described in JP-A-60-222360. In this publication, a step plate rotates from a storage position below the edge of the platform about a horizontal pivot in a direction substantially along the edge of the platform to close a gap between the edge of the platform and the vehicle. There are shown such a use position and a step plate that moves forward from the storage position to the vehicle side while reaching the use position. In the former case, the upper surface of the step plate is substantially vertical at the storage position and becomes horizontal as it approaches the use position. In the latter, the upper surface of the step plate is slightly tilted from the horizontal in the storage position,
It is level by the time it reaches the position of use.

[0003]

In the conventional step device having the structure in which the step plate is rotated horizontally from the vertical direction, the step plate is inclined during the rotation, so that the passenger rides on it quickly. There is a risk of slipping on the track and getting caught in the body with the vehicle. Also,
The configuration where the step plate is raised to the use position is horizontal near the use position and the above danger is eliminated, but if the drive source fails at the use position due to its mechanism, the step plate moves to the storage position by its own weight. It is dangerous because it descends. Therefore, the present invention prevents the passenger from falling on the track even when the step device is operating or when the drive source of the step device fails, even if the passenger is located on the step member. An object of the present invention is to provide a platform step device capable of ensuring safety.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a platform step device for closing a gap formed between a vehicle and an edge of a platform, and a platform part which is capable of advancing and retracting horizontally in the lower side of the platform and the platform. A slide base attached to the tip of the operating unit and an in-and-out drive unit for moving the slide base from the lower side of the platform to the lower position of the gap are provided, and the slide base is moved up and down in a vertical direction orthogonal to the horizontal direction. A step member is provided via a freely moving up and down operation part, and the up and down operation part is provided with an elevating and lowering drive part for elevating and lowering the step member between a height position corresponding to the upper surface of the platform and a lower position of the gap. Is characterized by.

[0005]

The step member moves between a use position that closes a gap formed between the vehicle and the edge of the platform and a storage position below the platform. The state in which the step device is in the retracted position is a state in which the raising / lowering operation unit is lowered and the in / out operation unit is retracted. When the entrance / exit operation part is advanced by the entrance / exit drive part from the state in which the step device is in the retracted position, the step member comes to be located below the gap formed between the vehicle and the edge of the platform. Next, when the raising / lowering operation unit raises the raising / lowering operation unit, the step member reaches the use position where the gap is closed. Then, by the operation reverse to the above, the step member returns from the use position to the storage position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. In the figure, 1 is a mounting frame, 2 is an entrance / exit operation part, 3 is a slide base, 4 is an entrance / exit drive part, 5 is an elevating operation part, 6 is a step member, 7 is an elevating drive part, 8 is a platform, and 9 is a vehicle. is there.

The mounting frame 1 is provided in a recessed portion 11 which is open to the upper surface and the vehicle stop side in the concrete portion forming the platform 8 and is installed in the recessed portion 11 and is provided in the upper surface. A top plate 12 closes the opening of the upper surface of the recess 11 and forms a part of the upper surface of the platform 8. The vehicle stop side of the mounting frame 1 installed in the recess 11 is open. In this mounting frame 1, a platform step device is installed.

The entrance / exit operation unit 2 includes two parallel links 13
And one end of each is pivotally supported by the mounting frame 1 by a shaft 14 and is rotatable in parallel to the upper surface of the platform 8.

The slide base 3 is formed in the shape of an elongated frame, is pivotally connected to the ends of the parallel links 13 by a shaft 15, and is kept in parallel with the edge of the platform 8 from inside the mounting frame 1. You can come and go.

The entrance / exit drive unit 4 includes one hydraulic cylinder 1.
6 and is provided between the attachment frame 1 and the connecting portion 17 provided in the middle of the one link 13.
When the hydraulic cylinder 16 expands and contracts, the parallel link 13 rotates by the angle A (about 70 °), and the slide base 3
Goes in and out of the mounting frame 1.

The elevating / lowering unit 5 is provided with an X-shaped structure 18, which is often used for a table lifter or the like, on the slide base 3. That is, the X-shaped structure 18 includes the members 19, 20.
Is pivotally connected so as to intersect with the X-shape, the lower end of one member 19 is pivotally supported on the slide base 3, and the lower end of the other member 20 is movably supported in a direction along the upper surface of the slide base 3. When the intersection angle of the members 19 and 20 is changed, the height of the upper end of the members 19 and 20 is changed similarly.

The step member 6 is a plate-like member formed in an elongated shape with a width that closes a gap formed between the edge of the platform 8 and the vehicle body of the stopped vehicle 9, and is provided at the upper end of the elevating / lowering unit 5. An upper end of the member 20 is pivotally coupled to a lower surface of the step member 6, and an upper end of the member 19 is movably coupled to the elevating operation unit 5 and the step member 6 along a lower surface of the step member 6.

The lifting drive unit 7 includes a single hydraulic cylinder 21.
And is provided between the slide base 3 and the connecting portion 22 provided in the middle of the one member 20 of the lifting / lowering operation unit 5. When the hydraulic cylinder 21 expands and contracts, the crossing angle of the members 19 and 20 is changed, and the step member 6 moves up and down. The step member 6 has an upper surface that matches the upper surface of the platform 8 in the raised position, and has a lift dimension as small as possible such that the step member 6 is located below the upper edge of the mounting frame 1 on the vehicle stop side in the lowered position. The position and dimensions of each part are determined. The lifting dimension in this case is 20
It is about a centimeter.

Reference numeral 23 in the drawing denotes a hydraulic unit for the hydraulic cylinders 16 and 21.

In the platform step device constructed as described above, the hydraulic cylinder 1 is controlled by an appropriate control unit.
6 and 21 are controlled. Hydraulic cylinder 1
The step member 6 is attached to the mounting frame 1 in a state where the members 6 and 21 are contracted.
It is a storage state inside. The storage state is changed to a use state as needed. In order to use it, the hydraulic cylinder 16 is first extended and then the hydraulic cylinder 21 is extended. As a result, the step member 6 first moves to the lower side of the gap between the vehicle 9 and the edge of the platform 8, and then rises to a height where the upper surface matches the upper surface of the platform to close the gap.

The step member 6 is always on the platform 8
You will be able to move it while keeping it parallel to the upper surface of. Therefore, even if the passenger is positioned on the step member 6 during the movement of the step member 6,
Since the angle of the top surface (generally horizontal) does not change at all times, there is no risk of slipping and falling to the track side. Further, even if the entrance / exit drive unit 4 or the elevating / lowering drive unit 7 fails when the step member 6 is in the use position, the egress / egress drive unit 4 does not move by the action of gravity, and the elevating / lowering drive unit 7 does not operate under the action of gravity. Although the hydraulic cylinder is shortened, since the step member 6 only descends in a horizontal state, in this case as well, there is no risk of passengers falling.

A second embodiment of the present invention will be described with reference to FIG. The difference of this embodiment from the first embodiment is the configuration of the lifting operation unit 5 and the lifting drive unit 7. Lifting operation unit 5
Comprises a cylindrical portion 25 provided in the slide base 3 and having a circular hole in the up-down direction, and a rod-like body 26 slidably fitted in the inner hole, and the upper end of the rod-like body 26 is the step member 6. It is fixed to the bottom surface. Then, the lifting drive unit 7
It is composed of a hydraulic cylinder 27, and its cylinder portion 28 is fixed to the central portion of the upper surface of the slide base 3, and the upper end of its piston rod portion 29 is pivotally coupled to the central portion of the lower surface of the step member 6. Since the other points are the same as those in the first embodiment, they are denoted by the same reference numerals in the drawings and the description thereof will be omitted.

When the slide base 3 advances, the hydraulic cylinder 27 of the lifting / lowering drive unit 7 expands and contracts, so that the rod-like body 26 of the lifting / lowering motion unit 5 is guided by the cylindrical portion 25 and the step member 6 slides. The step member 6 is vertically moved up and down while being maintained in a state parallel to 3. Since the step member 6 advances to the lower side of the gap between the vehicle 9 and the edge of the platform 8 in the state where the slide table 3 advances, the step member 6 moves upward to a height where its upper surface matches the upper surface of the platform, that is, Ascend to the use position to close the gap.

A third embodiment of the present invention will be described with reference to FIG. This embodiment also differs from the first embodiment in the configuration of the lifting operation unit 5 and the lifting drive unit 7. Lifting operation unit 5
Is a parallel link member 31 whose lower end is pivotally connected to the slide base 3, and whose upper end is pivotally connected to the lower surface of the step member 6. The lifting drive unit 7 includes a hydraulic cylinder 32.
The cylinder portion 33 is pivotally connected on the head cover side to the central portion of the upper surface of the slide base 3, and the upper end of the piston rod portion 34 is pivotally coupled to the central portion of the lower surface of the step member 6. Since the other points are the same as those in the first embodiment, they are denoted by the same reference numerals in the drawings and the description thereof will be omitted.

Also in this third embodiment, when the slide base 3 is advanced, the hydraulic cylinder 32 of the lift drive unit 7 expands and contracts so that the parallel link member 31 of the lift motion unit 5 slides the step member 6 on the slide base. The step member 6 is moved up and down along the arc while maintaining the state parallel to the step 3 of FIG. Since the step member 6 advances to the lower side of the gap between the vehicle 9 and the edge of the platform 8 in the state where the slide table 3 advances, the step member 6 moves upward to a height where its upper surface matches the upper surface of the platform, that is, Ascend to the use position to close the gap.

In the second and third embodiments, the step member 6 is always moved in parallel with the upper surface of the platform 8 as in the first embodiment. Even if the passenger is positioned on the step member 6 during the movement of the member 6, the step member 6 does not always change the angle of the upper surface, so that the step member 6 does not slip and fall to the track side. Similarly to the above, the step member 6 is driven by an elevating / lowering drive unit 7 different from the entrance / exit drive unit 4 of the slide base 3 in a state in which the slide base 3 is advanced. Even if the ingress / egress drive unit 4 or the elevating / lowering drive unit 7 fails during the time, the step member 6 only descends in a horizontal state, and in this case as well, there is no risk of passengers falling.

In the above embodiment, although not shown in the drawings, a mat switch is provided on the upper surface of the step member 6 to move the passenger in and out while the passenger is on the elevator drive unit 4 and the elevator drive unit 7.
It is preferable to stop the operation of the step member 6. In addition to this, separately or separately, for example, a belt switch is provided on the vehicle side and the side of the step member 6 so that the entrance / exit drive unit 4 and the elevating / lowering drive unit 7 can be also detected when a foreign matter is detected. It is better to stop the operation.

In the above embodiment, the hydraulic cylinder is used for the drive unit, but an air cylinder, an electric cylinder or an electric crank may be used depending on the case. In that case, it is preferable to use a device with a brake and a good responsiveness of the brake because the operation can be quickly stopped by the mat switch or the belt switch.

[0024]

According to the present invention, since the step member moves while keeping its upper surface always parallel to the upper surface of the platform, even if the passenger is positioned on the step member while the step member is moving, the step member does not slip. You can prevent the risk of falling on the track. Further, even if the entrance / exit drive unit or the elevating / lowering drive unit fails in the use position, the step member only descends by a predetermined dimension and stops, so in this case as well, even if the passenger is located on the step member, the slipping will not occur. You can prevent the risk of falling on the track. Therefore, it is possible to ensure the safety of the passengers going up and down.

[Brief description of drawings]

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a front view seen from a line side.

FIG. 2 is an enlarged cross-sectional view taken along the line S-S of FIG.

FIG. 3 is a front view of a second embodiment of the present invention.

FIG. 4 is a front view of a third embodiment of the present invention.

[Explanation of symbols]

 1 Mounting Frame 2 Entry / Exit Operation Section 3 Slide Base 4 Entry / Exit Drive Section 5 Elevating Operation Section 6 Step Member 7 Elevating Drive Section 8 Platform 9 Vehicle

Claims (1)

[Claims] 1. A step device for a platform for closing a gap formed between a vehicle and an edge of the platform,
An in-and-out moving part that can move back and forth in the horizontal direction under the platform, a slide base attached to the tip of the in-and-out moving part, and an in-and-out drive part that moves the slide base from the lower side of the platform to a position below the gap. And a step member is provided on the slide base via an ascending / descending operation unit that can be ascended / descended in a vertical direction orthogonal to the horizontal direction, and the step member is provided in the ascending / descending operation unit at a height position corresponding to the upper surface of the platform. A step device for a platform, comprising an elevating and lowering drive unit for elevating and lowering between the lower part of the gap and the lower position.