JPH05208642A - Lift device - Google Patents

Abstract

PURPOSE:To surely prevent a cable from being tangled and cut off even in narrow space like a lift step by providing the cable of acting means, provided in an auxiliary lift table, along an overhanging device for sliding the auxiliary lift table. CONSTITUTION:By overhanging an auxiliary lift table 32, a cover 50 is turned upward to play a role of a bridge plate for a step difference between a main lift step 30 and the auxiliary lift table 32. By overhanging the auxiliary lift table 32, an indicating device 53 in a side surface thereof is exposed to inform passers, passing through a side surface of a bus, of the lift table. Further, since a cable 54, housed in a lift step 11, is provided along each link 44, the cable is prevented from tangling to an overhanging device 43 or the like. Thus when overhanging of the auxiliary lift table 32, is completed a lift cylinder is extended to lower down the lift step 11 to the ground surface by switching a lift switching valve in the case of getting on the bus.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device for safely getting on and off a disabled person in a wheelchair in a vehicle such as a bus.

[0002]

2. Description of the Related Art Generally, in a vehicle such as a bus, a lift is lifted and lowered between a floor surface and the ground in order to allow a passenger to get on and off a wheelchair. By the way, in the past, in order to make it easier to get on and off the elevator, the auxiliary elevator is extended from the main elevator to increase the area of the elevator, but the auxiliary elevator has a stopper at the tip of the auxiliary elevator. There are lamps, etc. provided on the side of the auxiliary lift to let pedestrians etc. recognize that the electric cylinder for standing up and the lift are protruding from the vehicle, and the cable connected to them is the auxiliary lift's It is in a state of being slackened in the lift so that it can follow the slide.

[0003]

However, in the above structure, the inside of the lift is very narrow, and there is a danger that the cable of the auxiliary lift may be entangled or cut by the slide of the auxiliary lift. Therefore, an object of the present invention is to provide an elevating device which can prevent the cable provided in the elevating table from being entangled or cut.

[0004]

SUMMARY OF THE INVENTION According to the present invention, fixed stanchions fixed to the vehicle body are erected on the left and right of an entrance / exit of a vehicle, and an elevating platform fixed to the lower end of an elevating stanchion that slides along the fixed stanchions. In an elevating device capable of elevating from a surface to the ground, the elevating table is formed by a main elevating table and an auxiliary elevating table which is supported on the main elevating table so that it can be stored. An overhanging device for sliding the auxiliary lift is provided between the cables, and a cable connected to an operating means provided on the auxiliary lift is provided along the overhanging device.

[0005]

When the passenger is getting on and off the vehicle with a wheelchair, the auxiliary lifting platform is projected from the main lifting platform by the projecting device, and the area of the lifting platform is enlarged to facilitate getting on and off the elevator platform. When the passenger has finished getting in and out of the wheelchair, the auxiliary lift is stored in the main lift by the extension device. By the way, even if the auxiliary lift is slid as described above, the cable connected to the operating means of the auxiliary lift is not entangled or cut because it is installed along the extension device.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.
A bus 1 is provided with a door 3 for closing each entrance / exit 2 on the front, middle, and rear sides of the bus 1, and the front door 3 is folded and stored in one side of the entrance / exit 2 in a folded manner. -The rear door 3 is opened and stored on the left and right sides of the entrance / exit 2.

A seat 4 is provided on the floor surface 5. An elevating device 6 of the present invention is provided at the central entrance / exit 2 and will be described below with reference to FIGS. 3 to 23. FIG. 3 is a side view of the lifting device 6. Numeral 7 is a fixed column which is fixedly provided on the left and right sides of the vehicle body 81 of the entrance / exit 2, and the fixed column 7 has a rectangular cross section and has a box shape.

An elevating column 8 shorter than the fixed column 7 is provided in the fixed column 7 so as to project downward from the lower end of the fixed column 7, and an elevating column 8 is installed by an elevating cylinder 9 installed in the fixed column 7. It is designed to be raised and lowered. An elevating table 11 is horizontally fixed to the lower end of the elevating column 8 via a bracket 10.

A longitudinally elongated notch 12 is formed on the front surface of the fixed column 7 so that the bracket 10 can move. As a result, the elevating table 11 can move up and down between the floor surface 5 and the ground. A step device 14 is provided in a gap 13 between the base end of the elevating table 11 and the vehicle body 81. The step device 14 can be folded and stored in the gap 13 by rotating upward, and the step device 14 by rotating downward. The step is formed above.

As shown in FIGS. 7 to 10, the step device 14 has a mounting member 15 fixed to a vehicle body 81, a plate-like step member 16 hinged to the upper end of the mounting member 15, and a lower end of the mounting member 15. Hinge the middle part of the lower wall member 17,
An upper wall member 18 is connected between the step member 16 and the lower wall member 17, and the mounting member 15, the step member 16 and the upper / lower wall member 1 are provided when the step device 14 rotates downward (FIG. 7).
7 and 18 form a rectangular cross section.

At this time, the step member 16 is substantially horizontal so as to form a step, and the base side of the lower wall member 17 covers the lower side of the vehicle body 81 to prevent the vehicle body 81 from becoming dirty due to splash of mud during traveling. It is designed to prevent it. Further, when the step device 14 is rotated upward (FIG. 8), the step device 14 is folded and stored in the gap 13. At that time, the upper end is located at the same level as or slightly below the floor surface 5, and the upper and lower wall members 17, 18 are placed. Form a continuous vertical wall.

Reference numeral 19 is a drive device for vertically rotating the step device 14, and the drive device 19 fixes the barrel 22 of the cylinder 21 to the attachment member 15 via the attachment bracket 20 in the vertical direction, and the rod of the cylinder 21. 23 can be expanded and contracted upward, the center of an inverted U-shaped mounting frame 24 is fixed, and a roller 25 and one end of an arm 26 are axially supported at both ends of the mounting frame 24, and the roller 25 is mounted. The guide groove 28 of the guide frame 27 fixed to the member 15 can move only in the vertical direction.

The other end of the arm 26 is provided with a step member 16
Is rotatably supported by a bracket 29 on the lower surface of the. With the above structure, when the cylinder 21 is extended, the roller 25 rises along the guide groove 28 and the step member 16 is rotated upward by the movement of the arm 26.

Explaining the lift table 11 with reference to FIGS. 15 to 20, the lift table 11 has a main lift table 30, an intermediate frame 31, and an auxiliary lift table 32. The main elevating table 30 has a box shape, the brackets 10 integrated with the elevating columns 8 are fixed on both sides, and the guide portions 33 are formed on both inner sides. The intermediate frame 31 has left and right sliders 34 integrally connected at its lower surface. The slider 34 is made of synthetic resin and is slidably supported by the guide portion 33 of the main lift table 30 and is also connected to the main frame. The stopper portion 35 of the main lift table 30 and the step portion 36 of the slider 34 are engaged with each other so as not to fall off the lift table 30, as shown in FIG. 15, and a guide portion 37 is formed inside the slider 34. I am doing it.

Synthetic resin sliders 38 are provided on both side surfaces of the auxiliary lift table 32. The sliders 38 are slidably supported by the guide portions 37 of the intermediate frame 31 and are separated from the intermediate frame 31. The stopper portion 39 of the intermediate frame 31 and the step portion 40 of the slider 38 are engaged with each other so as not to fall off, and a stopper 41 having a triangular cross-section is rotatably mounted on the tip end of the stopper 41. The stopper 4 is provided by the electric cylinder 42 provided on the lifting table 32.
1 is set up.

Reference numeral 43 designates a projecting device for projecting the auxiliary elevator 32 from the main elevator 30. The projecting device 43 is a pantograph-shaped combination of a plurality of flat links 44. One of the base ends is pivotally supported on the main lift table 30, and the other is provided with a pin 46 guided by a guide rail 45 of the main lift table 30 and moved by a hydraulic cylinder 47 attached to the main lift table 30. It's getting better.

One of the tips is pivotally supported on the auxiliary lift 32,
The other is provided with a pin 49 guided by the guide rail 48 of the auxiliary lift 32. When the hydraulic cylinder 47 is contracted, the intermediate frame 31 and the auxiliary lift table 32 are projected from the main lift table 30, and when the hydraulic cylinder 47 is extended, the intermediate frame 31 and the auxiliary lift table 32 are stored in the main lift table 30. It is supposed to be done.

Reference numeral 50 denotes a lid for closing the front end opening portion 51 of the main lifting / lowering table 30 when the auxiliary lifting / lowering table 32 is stored. The lid 50 is hinged to the upper edge of the opening portion 51 and is provided with a spring 52. It is biased in the closing direction (Fig. 18) and covers the step with the main elevator 30 when the auxiliary elevator 32 is extended.
It can also be used as a bridge plate (Fig. 18).

Reference numeral 53 is a marking device such as a lamp for notifying a person passing the side of the bus 1 by bicycle or auto-bye that the auxiliary lift 32 is overhanging. The marking device 53 is fixed on both side surfaces of the auxiliary lift table 32 to the front side where the slider 38 is not provided so as not to project laterally from the slider 38, and when the auxiliary lift table 32 is stored. The marking device 53 is arranged so as not to hit the intermediate frame 31.

The cable 54 of the marking device 53 is shown in FIG.
Also, as shown in FIG. 16, it is arranged along the link 44 of the overhanging device 43 to prevent sticking or breakage,
In particular, in order to fix to the link 44, the cable 54 is fitted into the securing member 55 fixed to the link 44. Reference numeral 56 denotes a bridge plate hinged to the base end of the main lift table 30,
The transfer plate 56 is constantly urged in the projecting direction by a spring 57 provided at the center of rotation.
4 is used as a step (FIG. 3), the step device 14 resists the biasing force of the spring 57 and the main lift table 3
When the step device 14 is stored, the transfer plate 56 slides on the upper and lower wall members 17 and 18 to maintain the standing state while the elevator table 11 is being moved up and down (FIG. 4). When a person's foot is covered so as not to be caught between the lift table 11 and the vehicle body 81 and the like and raised to the same position as the floor surface 5 (Fig. 5), the bridge plate 56 is extended to the floor surface 5 and lifted. Stand 11
The gap 13 between the floor and the floor 5 is closed.

The hydraulic pipes of the lifting cylinder 9 and the hydraulic cylinder 47 of the overhang device 43 will be described with reference to FIGS. 11 to 13, and the lifting cylinder 9 is provided on the outer surface of both fixed columns 7.
The hydraulic pipe 58 is fixed by a fastening member 59 from the bottom to the top. Further, the hydraulic pipe 60 of the hydraulic cylinder 47
Fixes the base end to the bracket 61 of one of the fixed columns 7,
The front end is fixed to a bracket 62 which is orthogonally projected from the bracket 10 of the lifting table 11, and is bent in an inverted U shape in the middle portion.

A guide frame 63 extending upward is provided on the bracket 62, and the hydraulic frame 60 is held by the guide frame 63. In particular, the lifting table 11 is moved below the fixed column 7. It will be significant. A hydraulic pipe 64 extending to the hydraulic cylinder 47 is connected to the tip of the hydraulic pipe 60.

A hydraulic pipe (not shown) extending from the vehicle body 81 side is connected to the base end of the hydraulic pipe 60. 65
Is a cover that covers the hydraulic pipe 60 and is fixed to the fixed column 7. Further, the hydraulic pipe 60 is attached to the fixed column 7 on the right side.
A cable is provided in the same way as the
4 is connected.

FIG. 14 shows a lock device 66 provided on the outer surface of the lower part of the fixed column 7. The lock device 66 is fixed in a state where it is used as an intermediate position, that is, a step. The lock device 66 is provided with a lock cylinder 68 on the fixed column 7 via a support member 67,
The lock pin 69 which is moved by is provided in the support member 67, the engaging member 70 is fixed to the elevating support column 8 facing the support member 67, and the lock pin 69 is inserted into the engaging hole 71 of the engaging member 70. By doing so, the lifting column 8 and the lifting platform 11 can be fixed at an intermediate position.

FIG. 21 shows a hydraulic circuit 71 for the lifting cylinder 9 and the locking cylinder 68.
Reference numeral 1 denotes a lifting / lowering switching valve 73 in three positions for communicating from the hydraulic pump 72 to the lifting / lowering cylinder 9 and a locking switching valve 74 in three positions for communicating with the locking cylinder 68, and draining oil from the lifting / lowering switching valve 73. Is guided to the lock switching valve 74.

FIG. 22 shows a hydraulic circuit 75 of the cylinder 21 of the drive unit 19. The hydraulic circuit 75 includes a pump 76 capable of forward and reverse rotations and a double pilot check valve 77.
It is connected to the cylinder 21 through. FIG. 23 shows a hydraulic circuit 78 of the hydraulic cylinder 47 of the overhang device 43. The hydraulic circuit 78 is a pump capable of rotating in the forward and reverse directions and is passed through the double pilot check valve 80 to the hydraulic cylinder 47.
It is connected to the.

Although the present invention is applied to the bus in the embodiment, it may be applied to a passenger car. Further, the lifting platform is not limited to the structure of the embodiment, and the same action and effect can be obtained as long as the wheelchair is mounted on the lifting platform. The operation of the present invention will be described below with the above-described structure. First, when getting on and off a wheelchair, the door 3 is opened from the state shown in FIG. 3 and the step device 14 is stored.

That is, the pump 76 is rotated in the normal direction to extend the cylinder 21 of the drive unit 19, and the step member 16 is pushed up by the arm 26, whereby the step unit 14 is moved.
Is rotated upward as shown in FIG. 8 to be folded and stored. By storing the step device 14, the upper and lower wall members 1
7 and 18 become substantially vertical wall surfaces and the lower wall member 17
Is in a state of extending downward.

Further, the bridge plate 56, which has been stored against the biasing force of the spring 57, comes into contact with the lower wall member 17, that is, stands upright, and the lift 11 and the vehicle body 8 are brought into contact with each other.
It is designed to prevent your legs from being caught between.
Next, the lock switching valve 74 is switched to switch the lock cylinder 6
8 is contracted to release the lock pin 69 from the engagement with the engagement member 70 (FIG. 14).

At the same time, the pump 79 is reversed to reduce the hydraulic cylinder 47 of the overhang device 43. The reduction of the hydraulic cylinder 47 extends the panda-graph-shaped link 44,
Initially, the auxiliary lift 32 passes through the opening 51, pushes up the lid 50 and projects from the main lift 30, and the step 40 of the slider 38 of the auxiliary lift 32 engages the stopper 39 of the intermediate frame 31. The intermediate frame 31 is the auxiliary lift 3
The intermediate frame 31 is also pulled out by the opening portion 51 by being pulled by 2, and the stepped portion 36 of the slider 34 of the intermediate frame 31 engages with the stopper portion 35 of the main lift table 30 to stop the extension.

By extending the auxiliary elevating table 32 in this manner, the lid 50 pivots upward and serves as a bridge for the step between the main elevating table 30 and the auxiliary elevating table 32. Further, by projecting the auxiliary lift table 32, the marking device 53 on the side surface of the auxiliary lift table 32 is exposed, so that a passerby passing through the side surface of the bus 1 can be easily notified.

Further, since the cable 54 accommodated in the lift table 11 is provided along each link 44, the overhang device 43 is provided.
It also eliminates the entanglement with other things. When the extension of the auxiliary lift 32 is completed as described above, when getting on the bus 1, the lift switching valve 73 is switched to extend the lift cylinder 9 to lower the lift 11 to the ground and get off the bus 1. At the same time, the lifting switching valve 73 is switched to shrink the lifting cylinder 9 to raise the lifting platform 11 to the same position as the floor 5.

After that, since the same movement is performed when getting on and off the bus, the case of getting on the bus will be described below. First, after the lift 11 is on the ground, the user climbs on the lift 11 with a wheelchair. At that time, since the lid 50 functions as a step board of the step, it is possible to get into the smooth.

After the wheelchair gets in, the stopper 41 is raised by the electric cylinder 42 to prevent the wheelchair from falling. After that, the up / down switching valve 73 is switched and the up / down cylinder 9 is contracted to raise the up / down table 11 from FIG. 4 to FIG. During the ascending, the transfer plate 56 keeps the upright state, and when the transfer plate 56 is lifted to the same position as the floor surface 5, the transfer plate 56 is projected by the urging force of the spring 57 to close the gap 13, and the wheelchair moves up and down. The floor plate 5 is smoothly moved to the floor surface 5 through the bridge plate 56.

After moving to the floor surface 5, a plurality of wheelchairs can get on the bus 1 by lowering the elevator 11 to the ground and repeating the same operation again. Next, when walking to get on and off the bus, the raising / lowering switching valve 73 is switched from the state shown in FIG. 4 or FIG. 5 to raise / lower the raising / lowering table 11 to the intermediate position by the raising / lowering cylinder 9. After moving the elevator 11 to the intermediate position, the lock switching valve 74 is switched to extend the lock cylinder 68, and the lock pin 69 is inserted into the engaging hole 71 and engaged with the engaging member 70. Fix 11 in the intermediate position.

At the same time, the hydraulic cylinder 47 for rotating the pump 79 in the normal direction is extended, the extension device 43 is folded, and the auxiliary lift 32 is stored in the main lift 30. At that time, the slider 38 of the auxiliary lift table 32 is stored while the auxiliary lift table 32 is being stored.
The base end contacts the guide portion 37 of the intermediate frame 31, and then the intermediate frame 31 is also stored in the main elevator 30 together with the auxiliary elevator 32.

When the auxiliary lift 32 and the intermediate frame 31 are stored in the main lift 30, the opening 51 is closed by the lid 50. After storing the auxiliary lift 32, the step device 14 is rotated downward. That is, by rotating the pump 76 in the reverse direction to reduce the cylinder 21 of the drive device 19 and lowering the roller 25, the step member 16 rotates downward, and the lower wall member 17 causes the bridge plate 56 to urge the spring 57. The upper and lower wall members 17 and 18 horizontally support the step member 16 while it is stored on the lift table 11 and contacts the lift table 11.

In this state, the lift 11 and the step unit 14
Use as a step to walk in and out. Bus 1
When the boarding / alighting is completed, the door 3 is closed in the above state and the vehicle travels to the next place. In the embodiment, the step device is rotated downward to travel, but the step device may be rotated upward when the passenger gets on and off the wheelchair frequently.

[0039]

As described above, according to the present invention, the cable of the operating means provided on the auxiliary lift is provided along the extension device for sliding the auxiliary lift, so that it can be installed in a narrow space such as the lift. Even in this case, it is possible to reliably prevent the cable from becoming entangled or cut.

[Brief description of drawings]

FIG. 1 is a side view of a bus equipped with the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged view taken along line BB of FIG.

FIG. 4 is an operation state diagram when the lift is lowered.

FIG. 5 is an operation state diagram when a lift is raised.

FIG. 6 is a CC view of FIG. 3;

FIG. 7 is an enlarged view taken along line DD of FIG.

FIG. 8 is a state diagram in which the step device is rotated upward.

9 is an enlarged cross-sectional view taken along line EE of FIG.

10 is a cross-sectional view taken along the line FF of FIG.

FIG. 11 is a partial view of a fixed column.

12 is a GG view of FIG. 11. FIG.

13 is a sectional view taken along line HH of FIG.

14 is a cross-sectional view taken along the line I-I of FIG.

FIG. 15 is an overall view of a part of a lift table in cross section.

16 is a sectional view taken along line JJ of FIG.

17 is a sectional view taken along line KK of FIG.

FIG. 18 is a partial side view of the lifting table when the auxiliary lifting table is stored.

FIG. 19 is a partial side view of the lifting table when the auxiliary lifting table is extended.

20 is an LL diagram of FIG. 18. FIG.

FIG. 21 is a hydraulic circuit diagram of a lifting cylinder and a locking cylinder.

FIG. 22 is a hydraulic circuit diagram of a cylinder of the drive device.

FIG. 23 is a hydraulic circuit diagram of a hydraulic cylinder of the overhang device.

[Explanation of symbols]

 2 entrance / exit 5 floor surface 6 lifting device 11 lifting platform 30 main lifting platform 32 auxiliary lifting platform 43 overhanging device 54 cables

Claims (1)

[Claims] 1. An elevating platform fixed to the lower end of an elevating column that slides along the fixed column can be lifted from the floor surface to the ground. In the lifting device described above, the lifting platform is formed by a main lifting platform and an auxiliary lifting platform that is supported on the main lifting platform so as to be able to be stored, and the auxiliary lifting platform is slid between the main lifting platform and the auxiliary lifting platform. An elevating and lowering device, which is provided with an overhanging device, and a cable connected to an actuating means provided on the auxiliary lifting platform is provided along the overhanging device.