JP3291636B2 - Vehicle lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus for a vehicle which can be appropriately converted into a step of getting on and off a bus and an elevator apparatus such as a wheelchair.

[0002]

2. Description of the Related Art Conventionally, various types of vehicular elevating devices that can be appropriately converted into a bus getting on / off step and a lifting device such as a wheelchair can be used.

[0003]

As described above, as described above,
Various proposals have been made for elevating devices such as steps for getting on and off the bus and wheelchairs, but all have drawbacks of complicated structure and high cost.

[0004]

Means for Solving the Problems An elevating platform which also serves as a step is provided at the entrance of the vehicle, and a box-shaped rail frame is arranged on the left and right sides of the entrance, and the rail frame protrudes rearward from both sides of the base end of the elevating platform. Insert the bracket to be inserted inward from the opening of the box-shaped rail frame, attached to the elevating body that is fitted to the rail portion of the box-shaped rail frame and can move up and down, connecting the upper end of the elevating body to the elevating chain, The lifting body is raised and lowered by the operation of the lifting chain by the action of the hydraulic cylinder and piston rod mounted on the box type rail frame, the lifting platform is provided from the main platform, the sub platform and the flapper, and the sub platform and the flapper are inside the main platform And retract it to the desired position. Tsu and engaging wearing position of flops, the vehicle lifting device being characterized in that no further steps to secure the lifting platform in place, Rerufure
The elevator of the arm is mounted on the rail frame at the upper end.
Connect to the end of the descending chain, and
To the lower part of the frame, and rise from the beginning.
The middle of the lifting chain is suspended at the back of the rail frame.
Attached to the lower end of the hydraulic cylinder piston rod
Hang on the traction chain wheel, change the direction downward, and
To the intermediate chain wheel that is pivotally supported at the bottom of the wheel frame.
And lift the chain up again to lift the rail frame.
Adjustable up and down support with an adjustment screw on the upper front side in the system
With the chain wheel facing downwards,
As described above, there is provided a vehicle elevating device which is connected to an elevating body .

[0005] An elevating platform that also serves as a step is provided at the entrance of the vehicle, and a box-shaped rail frame is disposed on the left and right sides of the entrance and exit. The bracket that projects rearward from both sides of the base end of the elevator platform is provided on the rail frame. It is inserted into the opening of the rail frame inward, and it is attached to the rail part of the box-shaped rail frame and attached to the elevating body that can move up and down, and the upper end of the elevating body is connected to the elevating chain and installed on the box-type rail frame. The lifting body is raised and lowered by the operation of the lifting cylinder by the action of the hydraulic cylinder and the piston rod, the lifting platform is provided from the main platform, the sub platform and the flapper, and the sub platform and the flapper are retracted into the main platform and stored. In this retracted state, the lifting platform is engaged at the required step position. And, in the vehicle lifting device being characterized in that no further steps to secure the lifting platform in place, the main platform, the internal
It has a hollow flat cylindrical shape, with guide rails on the inner surfaces of both side walls.
Attach the receiver and guide it under and below it at required intervals
Attach the rollers and set the sub-platform
Flat cylinder type, with the latter half required length on the outer surface of both side walls
And attach the guide rail
The guide rail receiver and guide of the main platform
And the sub-platform
The main platform must be slidable.
And a lifting device for a vehicle characterized by the following.

[0006] An elevating platform which also serves as a step is provided at the entrance of the vehicle, and a box-shaped rail frame is disposed on the left and right of the entrance, and a bracket projecting rearward from both sides of the base end of the elevator platform is provided on the rail frame. It is inserted into the opening of the rail frame inward, and it is attached to the rail part of the box-shaped rail frame and attached to the elevating body that can move up and down, and the upper end of the elevating body is connected to the elevating chain and installed on the box-type rail frame. The lifting body is raised and lowered by the operation of the lifting cylinder by the action of the hydraulic cylinder and the piston rod, the lifting platform is provided from the main platform, the sub platform and the flapper, and the sub platform and the flapper are retracted into the main platform and stored. In this retracted state, the lifting platform is engaged at the required step position. And, in the vehicle lifting device being characterized in that no further steps to secure the lifting platform in place, support for the main platform
A cross lug in which the platform is pivotally connected at the center
Fan gears, the other ends of which mesh with each other
The mounting arm is pivotally connected, and one of the mounting arms is
Mesh the sector gears with each other and connect to the base arm bearing
And mesh the fan gears of the other mounting arm with each other.
To the distal arm receiver, and then to the proximal arm
Hydraulic cylinder base between receiver and one of the mounting arms
The end and the end of the piston rod are axially connected, and the two points
Operation of the hydraulic cylinder and piston rod between the shaft connection
To expand and contract with the cross-assembly multiple arms to expand and contract
Tip arm against main platform with receiver
Extension and storage of the sub-platform with the
The present invention may be applied to a vehicle elevating device .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Steps are used also as entrances and exits of vehicles.
Platform on the left and right of the entrance
Place the frame, and on its rail frame,
The bracket that projects rearward from both sides of the base end of the home
Insert the box rail frame inward from the opening, and
Is fitted to the rail section of the
Attach to the lifting body and connect the upper end of the lifting body to the lifting chain
Hydraulic cylinders and pipes mounted on the box-shaped rail frame.
The lifting body is raised and lowered by the operation of the lifting chain by the action of the stone rod
And the lifting platform, the main platform,
Provided from the sub-platform and flapper,
Rat home and the flapper main Pratt home in the arm
To the platform.
Platform at the required step position, and lift platform
Is fixed to a fixed position to form a step
Up and down of the rail frame
The body is made of a lifting chain with the upper end mounted on a rail frame.
At the end, the starting end of the lifting chain is connected to the rail frame.
Up and down from the beginning
Hydraulic syringe with the middle part suspended in the back of the rail frame
Tow chain mounted on the lower end of the piston rod
Hang on the wheel, change the direction downward, rail rail
Again on the middle chain wheel that is
Raise the lifting chain upward, and move it up the rail frame.
A chain that can be adjusted up and down with an adjustment screw on the front side.
Hang it on the wheel and face it down, as before.
Connected to the lifting body, the main platform is hollow inside
The guide rail supports are provided on the inner surfaces of both side walls.
Attach the guide row at the required interval
And a sub-platform with a hollow inside.
Form the mold, on the outer surface of both side walls, the rear half the required length
Attach the guide rail so that it protrudes.
The main platform guide rail receiver and guide rail
The sub-platform back and forth.
Supported by the main platform so that
The sub-platform to the platform and the center
The other end engages with both ends of the cross arm
The mounting arm that forms the sector gear
Mesh the sector gears of one mounting arm with each other
Attached to the arm receiver and connected to the other mounting arm fan
Shape gears mesh with each other and are attached to the end arm bearing
And between the base arm receiver and one of the mounting arms.
Between the base end of the hydraulic cylinder and the tip of the piston rod.
The two cylinders are connected to each other by a hydraulic cylinder.
Expanding and contracting by operation with piston rod, cross-assembly multiple arm
Main platform with telescopic extension and base arm receiver
Sub-platform with tip arm receiver attached to home
Elevating device for vehicles that extends and retracts the platform.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which show an embodiment of the present invention.
And an intermediate step 5 thereon is provided with a hydraulic cylinder 5b and a piston rod 5c centered on the base support shaft 5a.
With the function described above, it is provided so as to be rotatable by approximately 90 degrees, and is provided so that the upper surface thereof becomes the floor surface 6.

Box-shaped rail frames 8, 8 are arranged on the right and left side walls of the entrance 2 at 7, 7, respectively, and the box-shaped rail frames 8, 8 are, as shown in FIG. Brackets 9, 9 protruding rearward are provided on both sides, and these are inserted inwardly from the openings 10, 10 of the box-shaped rail frames 8, 8, to the rail portions 11, 11 in the box-shaped rail frames 8, 8. Lifting body 1 fitted and capable of moving up and down
2 and 12 are fixed by screws 13 and 13.

The upper ends of the elevating bodies 12, 12 are moved up and down by a chain 1
4, 14 are connected to the ends 14b, 14b. The starting ends 14a, 14a of the lifting chains 14, 14 are fixed to the lower portions in the box-shaped rail frames 8, 8, and the starting ends 14a, 14a are fixed.
As shown in FIG. 3, the middle of the lifting chains 14, 14 rising from
Of the piston rods 16, 16, which are attached to the lower ends of the box rod rails 8, 8. The chain is lifted up and down again to raise the chain 14, and the chain rails 8, 8 are attached to the chain wheels 20, 20 which are vertically supported by adjusting screws 19, 19 on the upper front side thereof, and are turned downward. The ends 14b, 14b are connected to the lifting body 1 as described above.
2 and 12 are connected.

Since the elevating bodies 12 are connected as described above, in the state shown in FIG.
When a valve of a hydraulic circuit (not shown) connected to is opened, the piston rods 16, 16 receive gravity loaded on the lifting chains 14, 14, via the traction chain wheels 17, 17, so that the hydraulic cylinder 15, Since the oil 15 is pushed out to lower the piston rods 16, 16 and loosen the lifting chains 14, 14, the lifting bodies 12, 12 are lowered, and the lifting platform 4, which is supported thereby, is lowered.

Conversely, when oil is supplied from a hydraulic circuit connected to the hydraulic cylinders 15, 15, the piston rods 16, 16 are raised, so that the lifting chains 14, 14 are raised.
Is lifted, the lifting bodies 12, 12 are raised, and the lifting platform 4 supported by the lifting bodies 12, 12 is raised.

When the adjusting screws 19, 19 are rotated, the chain wheels 20, 20, which are supported at the lower ends, are moved up and down to adjust the upper limit position and the like of the lifting platform 4, which change due to the extension of the chain and the like.

The lifting platform 4 includes a main platform 4a, a sub-platform 4b, and a flapper 4c, and the sub-platform 4b and the flapper 4c.
c is retracted and stored in the main platform 4a, and the front lid plate 4 at the front end of the main platform 4a
By rotating d, the front end opening 21 is closed to constitute the first step as described above.

The main platform 4a has a flat cylindrical shape with a hollow inside, and guide rail receivers 22, 22 are mounted on the inner surfaces of both side walls, and guide rollers 23, 23 are mounted below the front and rear at required intervals. I have.

The sub-platform 4b also has a flat cylindrical shape with a hollow inside, and guide rails 24, 24 are attached to the outer surfaces of both side walls so as to protrude rearward by a required length in the rear half, and the guide rails 24, 24 are mounted on the sub-platform 4b. The main platform 4a is fitted between the guide rail receivers 22, 22 and the guide rollers 23, 23, and the sub platform 4b is slidably supported on the main platform 4a.

The sub-platform 4b is provided with respect to the main platform 4a so that the sub-platform 4b is extended and retracted by a cross-assembled multiple arm 27 operated by a hydraulic cylinder 25 and a piston rod 26.

As shown in FIG. 6, the cross-assembled multiple arm 27 includes cross arms 28, 28 having their central portions pivotally connected.
Sector gears 29a, 30 whose other ends mesh with each other
a, the mounting arms 29, 30 formed with a are connected to each other, and the sector gears 29a of one of the mounting arms 29 are meshed with each other to be axially connected to the base arm receiver 31, and the sector gear of the other mounting arm 30 is connected. The base ends of the hydraulic cylinder 25 and the distal end of the piston rod 26 are axially connected between the proximal end arm receiver 31 and one of the mounting arms 29. The hydraulic cylinder 25 and the piston rod 26 act to expand and contract the space between the two shaft-attached connections, extend and retract the cross-assembled multiple arm 27, and move the distal end to the main platform 4a to which the base arm receiver 31 is attached. The sub-platform 4b to which the arm receiver 32 is attached can be extended and stored.

The base end of the flapper 4c is pivotally supported on the sub-platform 4b by the hinge mechanism 33, and reciprocates beside the driving slide plate 36 by the piston rod 35 of the hydraulic cylinder 34 mounted on the sub-platform 4b. The sub-platform 4b is engaged with an engagement shaft 39 on a driven slide plate 38 supported by the sub-platform 4b so as to be able to slide back and forth in a long hole 37 obliquely crossing the sliding direction, and the rack 40 is connected to the driven slide plate 38. Then, the rack 40 is engaged with the pinion 41 at the base end of the flapper 4c, and the pinion 41 is rotated by sliding the rack 40 back and forth, so that the flapper 4c is provided so as to be able to move up and down.

The lifting platform 4 includes a sub-platform 4b and a flapper 4c as a main platform 4a.
For example, although not shown, the stationary pins 42, 42 are urged to always protrude outward by a spring action, and the stationary pins 42, 4
2 is inserted into the hook holes 43 of the bracket 9 and fixed in place. And when used as lifting platform 4, remove the hook moves inward in oil pressure action,
You can move up and down freely. In addition, the stationary pin 4
2, 42 can be released by electromagnetic action or manually,
Of course it is good.

[0021]

Since the present invention is as described above, the present invention can be appropriately converted and used for the step of getting on and off the bus and the elevating device such as a wheelchair.

[Brief description of the drawings]

FIG. 1 is a partially longitudinal side view of a use state in which a lift device according to the present invention is used as a two-step step at a doorway of a general bus.

FIG. 2 is a side view showing a state where the platform device is folded upright and stored in a vehicle.

FIG. 3 is a vertical sectional side view of a lifting guide rail and a lifting power device.

FIG. 4 is a side view showing a state where the platform device is extended and deployed.

FIG. 5 is a plan view of the same.

FIG. 6 is a plan view of a link mechanism that performs the reduction to that state and the extension to the platform device.

FIG. 7 is a partial cross-sectional view taken along the line AA of FIG. 5;

FIG. 8 is a longitudinal sectional side view of a state where the platform device is reduced.

FIG. 9 is an explanatory plan view of a flapper raising / lowering mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Doorway 3 Door 4 Elevating platform 4a Main platform 4b Sub-platform 4c Flapper 4d Front cover plate 5 Intermediate step 5a Base end support shaft 5b Hydraulic cylinder 5c Piston rod 6 Floor surface 7 Side wall surface 8 Box-shaped rail frame 9 Bracket 10 Opening 11 Rail section 12 Lifting body 13 Screw 14 Lifting chain 14a Start end 14b End 15 Hydraulic cylinder 16 Piston rod 17 Traction wheel 18 Intermediate chain wheel 19 Adjustment screw 20 Chain wheel 21 Front opening 22 Guide rail receiver 23 Guide roller 24 Guide rail Reference Signs List 25 hydraulic cylinder 26 piston rod 27 cross-assembled multiple arm 28 cross arm 29 mounting arm 29a sector gear 30 mounting arm 30a sector gear 31 base end Bearing 32 tip arm receiver 33 hinge mechanism 34 hydraulic cylinder 35 piston rod 36 driving slide plate 37 long hole 38 driven slide plate 39 engaging shaft 40 rack 41 pinion 42 stationary pin 43 locking hole

Claims (3)

(57) [Claims] 1. An elevator platform serving also as a step at the entrance of a vehicle, a box-shaped rail frame disposed on the left and right sides of the entrance, and a bracket protruding rearward from both sides of the base end of the elevator platform on the rail frame. It is inserted inside the opening of the box-shaped rail frame, is mounted on the rail of the box-shaped rail frame, and is attached to a vertically movable elevating body. The upper end of the elevating body is connected to the elevating chain, and the box-shaped rail frame is connected. The lifting and lowering body is raised and lowered by the operation of the lifting cylinder by the action of the hydraulic cylinder and piston rod equipped on the main platform, the lifting platform is provided from the main platform, the sub-platform and the flapper, and the sub-platform and the flapper are drawn into the main platform and stored In this storage state, the lifting platform is engaged at the required step position. Wear and, in the vehicle lifting device being characterized in that no further steps to secure the lifting platform in position, the lifting of the rail frame, the upper
Connect the end to the end of the lifting chain installed on the rail frame.
And the starting end of the lifting chain is below the rail frame.
To the middle part of the lifting chain
The hydraulic cylinder suspended from the rear side in the rail frame
Traction chain wheel supported on the lower end of a stone rod
To change the direction downward, and
Again on the middle chain wheel supported by
Launch the descending chain and adjust it to the upper front side in the rail frame.
Chain wheel supported up and down by adjusting screw
And turn it downward, and attach the end to the lifting body as described above.
A lifting device for a vehicle, wherein the lifting device is connected to a vehicle. 2. An elevator platform serving also as a step at the entrance of the vehicle, and a box-shaped rail frame disposed on the left and right sides of the entrance, and a bracket protruding rearward from both sides of the base end of the elevator platform on the rail frame. It is inserted inside the opening of the box-shaped rail frame, is mounted on the rail of the box-shaped rail frame, and is attached to a vertically movable elevating body. The upper end of the elevating body is connected to the elevating chain, and the box-shaped rail frame is connected. The lifting and lowering body is raised and lowered by the operation of the lifting cylinder by the action of the hydraulic cylinder and piston rod equipped on the main platform, the lifting platform is provided from the main platform, the sub-platform and the flapper, and the sub-platform and the flapper are drawn into the main platform and stored In this storage state, the lifting platform is engaged at the required step position. And the lifting platform is fixed to a fixed position to form a single step, wherein the main platform has an internal
Has a hollow flat cylindrical shape, with guide rails on the inner surfaces of both side walls.
Attach the bracket at the required interval
And install the sub-platform with a hollow inside.
It has a flat cylindrical shape, and the required length of the latter half is on the outer surface of both side walls.
Attach the guide rail so that it protrudes rearward.
To the guide rail receiver of the main platform.
Fits between idle rollers and sub-platform back and forth
The vehicle lift device is slidably supported on a main platform . 3. An elevator platform serving also as a step at the entrance of the vehicle, and a box-shaped rail frame disposed on the left and right sides of the entrance, and a bracket protruding rearward from both sides of the base end of the elevator platform on the rail frame. It is inserted inside the opening of the box-shaped rail frame, is mounted on the rail of the box-shaped rail frame, and is attached to a vertically movable elevating body. The upper end of the elevating body is connected to the elevating chain, and the box-shaped rail frame is connected. The lifting and lowering body is raised and lowered by the operation of the lifting cylinder by the action of the hydraulic cylinder and piston rod equipped on the main platform, the lifting platform is provided from the main platform, the sub-platform and the flapper, and the sub-platform and the flapper are drawn into the main platform and stored In this storage state, the lifting platform is engaged at the required step position. And the lifting platform is fixed at a fixed position to form one step of the step .
A cross platform with the sub-platform connected at the center
At each end of the arm, form a sector gear with the other end meshing with each other
The mounting arm is connected to the mounting arm
Gears are meshed with each other and axially connected to the base arm receiver.
And engage the sector gears of the other mounting arm with each other.
And connected to the distal arm support by shaft.
Hydraulic cylinder between the receiver and one of the mounting arms.
The base end and the tip of the piston rod are axially connected and connected.
Between the hydraulic cylinder and the piston rod
Expand and contract by moving, extend and retract the cross-assembly multiple arms, and
To the main platform with the
Extension and storage of the sub-platform with the armrest
And a lifting device for a vehicle.