JPH0714074Y2 - lift device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating device which is attached to an entrance / exit of a passenger vehicle such as a bus and which is used for elevating and lowering a wheelchair by lifting and lowering a platform.

[0002]

[Prior Art and Problems to be Solved by the Invention]
When a wheelchair lifting device is provided in a passenger vehicle such as a bus, an opening is provided separately from the entrance for passengers to get in and out of the vehicle, and the wheelchair lifting device is provided in this opening. This is because the conventional wheelchair elevating device has a structure that cannot be used for ordinary passengers getting on and off because it simply elevates and lowers a flat platform.

For this reason, when the wheelchair lifting device is stored, the space volume in the vehicle compartment becomes narrower and a passage is required at the opening, so that the passage and seats in the compartment are functionally inconvenient. .

In view of the above points, the present invention makes it possible to smoothly get on and off a wheelchair or the like when the passengers get on and off the platform and in the case of a wheelchair or the like, the platform is in a flat developed state. Therefore, it is not necessary to provide a special opening separately, and therefore, it is possible to effectively arrange the passages and seats in the room without deteriorating the transportation function. The purpose is to provide.

[0005]

In order to achieve the above object, the lifting device of the present invention comprises: (a) a main body frame fixed to the entrance / exit side of a vehicle; and (b) a vertical frame with respect to the main body frame. A pair of fixed posts that are erected and fixed on the pair, (c) an elevating runner provided on each of the pair of fixed posts so as to be able to move up and down, and A sheave; (e) an ascending / descending cylinder attached to each of the pair of fixed posts; (f) a second sheave pivotally supported by a tip end portion of a piston rod of the ascending / descending cylinder; A wire rope wound between the first and second sheaves, one end of which is fixed to the fixed post side and the other end of which is fixed to the lifting runner; and (h) a space between the pair of lower ends of the lifting runners. Cross member to be connected, and (re) connection And a tread plate are sequentially connected and a rear end is pivotally attached to the cross member side, (n) a front end plate also serving as a car stop connected to the tread plate on the tip side of the platform, and (l) a lower end of the lifting runner. A main arm and a sub-arm, each of which has a parallel link whose one end is pivotally supported on the part side,
A lower frame pivotally attached to the other ends of the main arm and the sub-arm, and the step plate on the tip side is attached to the tip end of the lower frame to form the step plate and the connecting plate of the platform in a stepped shape. A deployment link mechanism for changing the folded state to a flattened deployment state; (e) a deployment cylinder for rotating the main arm; and (wa) a state in which the tip of the car stop / tip plate is lowered from the above state. A car stop rotation mechanism for rotating the car stop combined end plate such that the car stop combined end plate is turned over and overlaps the step plate on the tip side.

[0006]

In the lifting device of the present invention, the platform has a structure in which the connecting plate and the step plate are sequentially connected.
When the passengers get on and off normally, the platform has a step shape, and in the case of a wheelchair or the like, the connecting plate and the tread plate have a flat plate shape so that the platform can be moved up and down. Therefore, it can be attached to a normal entrance / exit. The platform can be lifted up and down in a flat plate shape by driving an up-down runner that can slide vertically (vertically) with respect to the fixed post using a lifting cylinder, which requires horizontal movement when the platform moves up and down. Instead, it is possible to get on and off a wheelchair in a narrow space. At that time, the length of the fixed post can be shortened by enlarging the stroke of the lifting cylinder by the combination of the pair of sheaves and the wire rope, and the view of the vehicle driver can be prevented. In addition, a sufficiently long wheel stop and tip plate is connected to the tip of the platform so that it can be raised and lowered and turned freely. When the platform descends, the tip of this wheel stop and tip plate is landed so that a wheelchair, etc. can get on and off smoothly. It is possible to turn over the front plate that also serves as a car stop and stack it on the second footboard when the passenger gets on and off.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lifting device according to the present invention will be described below with reference to the drawings.

1 to 10 show the structure of a lifting device,
FIG. 11 shows an example of a shared bus as a vehicle equipped with a lifting device.

As shown in FIG. 11, on the side surface of the shared bus 1,
There are entrances and exits 2 and 3, and the lifting device 5 of the present invention.
Is attached to, for example, one of the entrances and exits 2.

As shown in FIGS. 1 to 10, the lifting device 5 includes
The main body frame 10 is fixed at a lower position of the entrance / exit 2 of the bus (the upper floor of the entrance / exit is indicated by 2A), and stands vertically on the horizontal portions of the main body frame 10 so as to be located on both sides of the entrance / exit 2. A pair of fixed posts 11 fixed and fixed, a lift runner 13 slidably provided in a hollow square pipe-shaped guide portion 12 of the fixed post 11, and a bottom end of one lift runner 13 The fixed post 11
External coupling member 14A projecting outside of the fixed post 11 and the external coupling member 14B fixed to the lower end of the other lifting runner 13 and projecting outside of the fixed post 11.
A cross member 15 for connecting and integrating the external connecting members 14A and 14B, a first connecting plate 16A, a first step plate 17A, a second connecting plate 16B and a second step plate 17B via a hinge. Platform 18 which is sequentially connected and whose rear end is pivotally attached to the cross member side.
A tip plate 19 that also serves as a car stop and is rotatably and rotatably connected to the tip of the platform; and a parallel link mechanism 20 for expanding the platform 18 from a staircase-folded state to a flattened state. It is equipped with.

As shown in FIGS. 4 to 6, the fixed post 11 is provided.
A first sheave 23A is pivotally supported by a bracket 25 on the inner upper part of the cylinder body of the lifting hydraulic cylinder 21 for driving the lifting runner 13 up and down.
The second sheave 23B is pivotally attached to the lower portion by a pin 29, and the second sheave 23B is pivotally supported at the tip of the piston rod 24 of the hydraulic cylinder 21. A roller 28 made of resin such as nylon is pivotally attached to the elevating runner 13, and as a result, the fixing post 11 is formed.
The inner surface of the hollow square pipe-shaped guide portion 12 of the roller 2
The eight runners rotate while making contact with each other, and the elevating runner 13 can smoothly elevate. Then, the wire rope 27 whose one end is fixed to the upper end of the fixed post 11 via the stopper 26
Is wound in order of the second sheave 23B and the first sheave 23A, and the other end of the wire rope is fixed to the lifting runner 13. Therefore, as shown in FIG. 5, when the piston rod 24 of the lifting hydraulic cylinder 21 contracts, the first and second
The space between the sheaves 23A and 23B is long, and the lift runner 1
3 is the raised position, and conversely, as shown in FIG.
And the interval between the second sheaves 23A and 23B is short, and the lifting runner 13 is in the lowered position.

As shown in FIG. 4, a vertical slit groove 30 is formed on one side surface of the hollow square pipe-shaped guide portion 12, and one side edge of the elevating runner 13 passes through the slit groove 30 to form the hollow square pipe shape. It projects to the outside of the guide portion 12, and external connecting members 14A and 14B are fixed thereto as shown in FIG.

As shown in FIGS. 1 to 3, an upper plate 32 is fixed on the cross member 15 which is fixed by welding between the lower end portions of the pair of inner posts, that is, between the outer connecting members 14A and 14B. The rear end of the platform 18 is pivotally attached via a hinge. In addition, the cross member 15 is formed by the pair of external connecting members 14A and 14B.
A main shaft 33 is pivotally supported at a lower position of the main shaft 33, and a main arm 34 which constitutes one of the links of the parallel link mechanism 20 for expansion is fixed to the main shaft 33 and a small arm 35 is fixed thereto. One end of the sub-arm 36 forming the other link of the parallel link mechanism 20 for deployment is pivotally attached to the bracket portion 37 of the external connecting member 14 by a pin 38.

The parallel link mechanism 20 for deployment includes a main arm 34, a sub arm 36, and a lower frame 40.
, An auxiliary link 45, and an opening / closing auxiliary member 46, and the other ends of the main arm 34 and the sub arm 36 are pivotally attached to the lower frame 40 by pins 47 and 48, respectively. The second footboard 17B of the platform 18 is attached and fixed on the lower frame 40. The opening / closing assisting member 46 is the first step board 17A.
For assisting bending and unfolding of the main arm 34, and is pivotally attached to an intermediate position of the main arm 34, and the opening / closing assisting member 4
The auxiliary link 45 is connected between 6 and the lower frame 40. The auxiliary link 45 constitutes a link parallel to the main arm 34.

The main body of the deploying hydraulic cylinder 41 is pivotally supported by the cylinder box portion of one of the cylinder box / external connection members 14B, and the tip end portion of the piston rod is connected (pivotally attached) to the tip end portion of the small arm 35. . As a result, the main arm 34 and the sub arm 36 are in a suspended state when the expansion hydraulic cylinder 41 extends, and the main arm 34 and the sub arm 36 are in a horizontal state by rotating 90 degrees during the contraction. Therefore, the lower frame 40 moves up or down while maintaining the horizontal state in accordance with the contraction and extension of the deployment hydraulic cylinder 41.

In order to reliably execute the operation of the platform 18 from the stepwise bent state to the flattened state and vice versa, the bar-shaped cam 50 is provided on one side of the main arm 34 as shown in FIG. Is fixed to the bracket 51 fixed to the back surface of the first connecting plate 16A, and the cam 5 is attached to the bracket 51.
A roller 52 is attached as a cam follower that can freely come into contact with 0. As a result, the first connecting plate 16A is forcibly rotated as the main arm 34 rotates.

7 to 9 show a car stop rotating mechanism. As shown in these drawings, a vehicle stop and tip plate 19 is rotatably and rotatably connected to the tip edge of the platform 18 through a double hinge mechanism formed by connecting two hinges. Triangular side plates 54 are fitted and fixed on both sides of the shafts 53A and 53B of the two hinges.
A small arm 55 for ups and downs is fixed to the middle part of the. As a result, the triangular side plate 54 can rotate about the shaft 53A as a rotation fulcrum, and the wheel stop and tip plate 19 can rotate about the shaft 53B as a rotation fulcrum. A cylinder mounting bracket 60 is fixed to the inside of the lower frame 40, and an undulating double-acting hydraulic cylinder 62 for undulating the vehicle stop and tip plate 19 is pivotally attached to the cylinder mounting bracket 60 by a pin 61. . Also,
A small arm 63 is pivotally attached to the bracket 60 with a pin 64,
With respect to the tip of the small arm 63, the tip of the piston rod of the undulating double-acting hydraulic cylinder 62 and the undulating link 6
One end of 5 is pivotally attached by a pin 66. The end of the bracket 67 fixed to the back surface of the second connecting plate 16B and the end of the triangular side plate 54 are connected by a rotating link 68. As a result, the tip plate 19 that also serves as a car stop
As shown in FIG. 7, when the undulating double-acting hydraulic cylinder 62 is in a contracted state and the platform 18 is bent in a stepwise manner, it is turned upside down and overlaps the second step plate 17B. Further, as shown in FIG. 8, when the platform 18 is expanded in a flat plate shape, the pivotal link 68 causes the triangular side plate 54 to pivot about 90 degrees about the shaft 53A. For this reason, with the extension / contraction operation of the undulating double-acting hydraulic cylinder 62, the vehicle stop / tip plate 19 rotates about 100 degrees from the solid line state in which the tip is lowered to the imaginary line state in which it stands up as a vehicle stop with the shaft 53B as a fulcrum. It can be carried out.

Since the bottom surface of the entrance / exit 2 on the vehicle side is completely cut out so that the lower frame 40 of the lifting device 5 can be landed, if any measures are not taken, the lifting device 5 of the lifting device 5 can be run. Dust and splashes of rainwater may get in through the gaps. For this reason, as shown in FIG. 3, the seal plates 70 to which an elastic seal material such as a sponge is attached are attached to the left and right of the horizontal portion of the main body frame 10 via hinges 71. The seal plate 70 is biased by a spring (not shown) in such a direction as to shield the bottom surface of the entrance / exit 2. Therefore, when the lifting runner 13 is stored in the fixed post at the upper limit position as when the vehicle is running,
The gap between the platform 18 and the lateral frame 10 which are stepwise as indicated by the solid line is closed. Further, since the seal plate 70 is automatically opened when the raising / lowering runner 13 is lowered, the lowering of the raising / lowering runner 13 and the like is not hindered.

In the configuration of the above embodiment, the lifting device 5
1 and 10 in the solid line state, as shown in FIG. 5, the rod of the lifting hydraulic cylinder 21 is in the most contracted state, the lifting runner 13 is at the upper limit position, and the cross member 1
The upper surface of the upper plate 32 fixed on the upper surface of the vehicle 5 is the upper floor surface 2 of the entrance 2
It is almost the same as A. Further, the expansion hydraulic cylinder 41 is in the expanded state, and the undulating double-acting hydraulic cylinder 62 is in the contracted state.
The platform 18 is bent in a stepwise manner, the lower surface of the first step plate 17A is supported by the opening / closing assisting member 46, and the lower surface of the second step plate 17B is fixedly supported on the lower frame 40. In addition, the tip plate 19 also serving as a car stop is turned over and overlaps the second step plate 17B to be substantially horizontal and functions as a step plate. In this state,
Normal passengers can get on and off using the first step plate 17A of the platform 18 and the rear surface of the tip plate 19 that also serves as a car stop.

When a wheelchair or the like is to be lifted or lowered, the platform 18 is driven from a bent state having a staircase shape to a flattened shape as shown by an imaginary line J in FIG. That is,
The hydraulic cylinder 41 for deployment is operated, and the lower frame 40 is raised by the parallel link mechanism 20 for deployment. At this time, the main arm 34 and the auxiliary arm 36 is rotated clockwise, the platform 18 on Roa frame <br/> over arm in their raised limit position to deploy as a piece of flat plate. When the platform 18 is deployed, the tip plate 19 also serving as a car stop is rotated about 90 degrees by the action of the rotation link 68 and the triangular side plate 54 to be in an upright state as shown by an imaginary line H in FIG.

The expanded platform 18 can be lowered to the landing position of the lower frame 40 on the imaginary line L in FIG. 10 by the extension operation of the lifting hydraulic cylinder 21 as shown in FIG. To place a wheelchair or the like on the platform 18 landed on the surface of the earth, the tip plate 19 that also serves as a car stop is used.
Since it is necessary to lie down, the double-acting hydraulic cylinder 62 for vehicle stop is extended to lower the tip of the tip plate 19 also serving as a vehicle stop as shown by the solid line in FIG. In this state, a wheelchair or the like can be moved onto the platform 18. At this time, since the car stop and tip plate 19 has a sufficient length that is approximately the same as the second step plate 17B, the inclination of the top surface of the car stop and tip plate 19 when the tip of the car stop and tip plate 19 lands is about 8 Tip plate 1 that can be used for wheelchairs, etc. and can be used as a car stop.
It can be mounted on the platform 18 via 9. The second step plate 17B is also inclined about 3 degrees.

When the platform 18 is lifted with a wheelchair or the like placed thereon, the undulating double-acting hydraulic cylinder 62 is contracted to raise the car stop / tip plate 19 as shown by imaginary line M in FIGS. 8 and 10. This is performed by contracting the lifting hydraulic cylinder 21 while maintaining the deployed state of the platform 18 and the standing state of the tip plate 19 that also serves as a car stop.
As a result, the lifting runner 13 rises to the upper limit position in the fixed post 11, and the platform 18 and the vehicle-side entrance / exit upper floor surface 2A are at the same height, and the platform 1
A wheelchair or the like can be moved from 8 to the upper floor surface 2A.

On the contrary, a wheelchair or the like can be transferred to the ground by placing the wheelchair or the like on the platform 18 at the upper limit position from the vehicle side and lowering the platform 18. When the platform 18 descends, the car stop and tip plate 19 stands up to prevent a wheelchair or the like from falling. After landing of the platform 18, the tip of the car stop and tip plate 19 is lowered as shown by the solid line in FIG. 8, and the wheelchair or the like can be moved to the ground side.

After the lifting of the wheelchair or the like is completed, the lifting runner 13 is returned to the ascending limit position to deploy the hydraulic cylinder 41 for deployment.
When the platform 18 is extended, the platform 18 again becomes stepwise as shown by the solid lines in FIGS.

The structure of the above embodiment has the following features. (1) Platform 18 is used for normal passengers getting on and off.
Is a staircase, and in the case of a wheelchair or the like, the connecting plate and the tread plate are flat plates so that the platform 18 can be moved up and down. Therefore, it can be attached to a normal entrance / exit. The platform can be lifted up and down by driving the lifter runner 13 that can move up and down in the fixed post 11 in the vertical direction (vertical direction) by the lift hydraulic cylinder 21. Without movement,
It is possible to get on and off a wheelchair etc. in a narrow space. (2) A wire rope 27 having one end fixed to the fixed post side is wound between the first sheave 23A on the fixed post 11 side and the second sheave 23B on the lifting hydraulic cylinder 21 side,
Since the other end of the wire rope 27 is connected to the lifting runner 13, the stroke of the lifting hydraulic cylinder 21 can be enlarged and the lifting stroke of the lifting runner 13 can be made sufficiently large. Therefore, the lifting hydraulic cylinder 21
The height of the fixed post 11 in which is stored can be reduced, so that the driver's view of the shared bus is not hindered. (3) The main arm 34 of the parallel link mechanism 20 for deployment is fixed to the main shaft 33, and the main shaft 3
3 is a mechanism for fixing the small arm 35 to the third arm 35 and rotating the small arm 35 by the expanding hydraulic cylinder 41 to execute the expansion of the platform 18.
The width W of the upper plate 32 connected to the rear end side may be substantially the same as the width of the main arm 34, and can sufficiently cope with the case where the entrance / exit depth dimension is narrow. (4) The tip plate 19 also serving as a car stop on the tip side of the platform 18 is the second step plate 17 of the platform 18.
Since it is used as a footboard by lining it upside down on B,
The effective length of the platform 18 can be made sufficiently large, and the length of the car stop and tip plate 19 can also be made sufficiently large.
It is possible to reduce the inclination of the upper surface of the vehicle stop and tip plate 19 when the platform 18 is in the lowered position and the tip of the vehicle stop and tip plate 19 is lowered to be in a landing state. Therefore, transfer to a platform such as a wheelchair can be carried out smoothly.

[0026]

As described above, according to the present invention,
The platform can be used as a staircase when passengers get on and off, and the platform can be used as a flat plate in the case of a wheelchair, etc. It is possible to obtain a lifting device that can be smoothly executed.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of an elevating device according to the present invention when a platform has a step shape.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a plan sectional view of a fixed post portion in the embodiment.

FIG. 5 is a front cross-sectional view of a fixed post portion in which a lifting runner is in a raised state.

FIG. 6 is a front cross-sectional view of a fixed post portion in which a lifting runner is in a lowered state.

FIG. 7 is a front cross-sectional view showing a state in which the front plate also serving as a car stop is turned upside down and overlaps the platform in the car stop rotation mechanism in the embodiment.

FIG. 8 is a front view showing a state in which the tip plate also serving as a car stop is laid down or erected.

FIG. 9 is a plan view of a car stop rotation mechanism.

FIG. 10 is a front sectional view for explaining the operation of the embodiment.

FIG. 11 is a side view showing a shared bus as an example of a boarding / alighting vehicle equipped with a lifting device.

[Explanation of symbols]

1 Bus 2, 3 Entrance / Exit 10 Body Frame 11 Fixed Post 13 Lifting Runner 14A, 14B External Connecting Member 15 Cross Member 18 Platform 19 Platform Tip for Car Stops 20 Parallel Link Mechanism 21 Lifting Hydraulic Cylinder 23A, 23B Sheave 27 Wire Rope 33 Main Shaft 34 Main Arm 36 Sub Arm 40 Lower Frame 41 Hydraulic Cylinder for Deployment 53A, 53B Shaft 54 Triangular Side Plate 62 Double Acting Hydraulic Cylinder for Elevation 70 Seal Plate

Claims (1)

[Scope of utility model registration request] 1. A main body frame fixed to an entrance / exit side of a vehicle, a pair of fixed posts vertically erected and fixed to the main body frame, and an elevating unit provided on the pair of fixed posts so as to be vertically movable. A runner, first sheaves pivotally supported on the upper portions of the pair of fixing posts, lifting cylinders respectively attached to the pair of fixing posts, and pivotal support on the tip end portions of piston rods of the lifting cylinders. The second sheave, a wire rope wound between the first and second sheaves, one end of which is fixed to the fixed post side and the other end of which is fixed to the lifting runner; A cross member that connects between the lower end parts of the lifting runners, a platform that sequentially connects the connecting plate and the tread plate, and has a rear end pivotally attached to the cross member side,
A tip plate also serving as a car stop connected to a step plate on the tip side of the platform, a main arm and a sub arm that form a parallel link, one end of which is pivotally supported on the lower end side of the lifting runner, and the other end of the main arm and the sub arm, respectively. A lower frame that is pivotally attached, and by attaching the step plate on the tip side to the tip part of the lower frame, the step plate and the connecting plate of the platform are bent from a bent state into a flat plate-like expanded state. The parallel link mechanism for deployment, the deployment cylinder for rotating the main arm, and the tip plate also serving as the car stop and turned over from the state in which the tip of the tip plate also serves as the car stop and overlaps with the footboard on the tip side. And a car stop rotating mechanism for rotating the car stop and tip plate. Lifting device according to claim.