JPH057544U - lift device - Google Patents

Abstract

(57) [Summary] [Purpose] When the passengers get on and off, the platform should be stepwise, and in the case of a wheelchair, etc., the platform should be flat, so that the wheelchair etc. can be put on and off smoothly, and the height of the device is low. So that the driver's field of view is not narrowed. [Structure] A pair of fixed posts 11 are installed upright on the entrance / exit side of a vehicle, and the stroke of a lifting cylinder 21 is enlarged to transmit the lifting posts to a lifting runner 13 that lifts and lowers the fixed posts 11 to provide a sufficient lifting runner with short fixing posts. Of the platform 18 mounted on the lifting runner 13 can be changed by the deployment link mechanism 20 from the stepwise bent state to the flattened state, and the platform tip can be undulated. A tip plate 19 which is rotatable and has a sufficient length is provided so that a user can smoothly get on and off a wheelchair or the like through the tip plate 19 in a prone state when landing on the platform.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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 facilitates getting on / off of a wheelchair or the like by vertically moving a platform.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, when a wheelchair lifting device is installed 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 installed in this opening. .. This is because the conventional wheelchair elevating device is 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 inside the vehicle becomes narrower, and a passage is required at the opening, so that the passage and the seat in the vehicle 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 by setting the platform to be a staircase when passengers get on and off and in the case of a wheelchair or the like, the platform is in a flattened state. Therefore, it is not necessary to provide a special opening separately, so that the passages and seats in the room can be effectively arranged without lowering the transportation function, and the height is low and the driver's view is not narrowed. The purpose is to provide.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the lifting device of the present invention comprises: (a) a main body frame fixed to an entrance / exit side of a vehicle; and (b) a pair of fixed fixing members which are vertically fixed to the main body frame. A post; (c) an elevating runner provided on each of the pair of fixed posts so as to be able to move up and down; (d) a first sheave pivotally supported on an upper portion of the pair of fixed posts; and (e) a pair of the pair of elongate runners. An elevating cylinder attached to each of the fixed posts; (f) a second sheave pivotally supported at the tip of the piston rod of the elevating cylinder; (g) a winding between the first and second sheaves. A wire rope that is hung and has one end fixed to the fixed post side and the other end fixed to the lifting runner; and (h) a cross member that connects between the lower end portions of the pair of lifting runners; Only connect the connecting plate and tread in order A platform having a rear end pivotally attached to the cross member side, (n) a front end plate also serving as a car stop connected to a step plate on the front end side of the platform, and (l) one end on the lower end side of the lifting runner, respectively. It has a main arm and a sub arm that are pivotally supported and form a parallel link, and a lower frame that is respectively pivoted to the other ends of the main arm and the sub arm, and the footboard on the front end side is attached to the tip end of the lower frame. Thus, a deployment link mechanism for changing the stepped plate and the connection plate of the platform from a stepwise bent state to a flattened expanded state, (e) a deployment cylinder for rotating the main arm, W) From the state in which the tip of the car stop and tip plate is lowered, the car stop and tip plate is turned over to the footboard on the tip side. A vehicle stop rotation mechanism for rotating the vehicle stop combined tip plate in an overlapping state is provided.

[0006]

[Action]

 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. In addition, when passengers get on and off normally, the platform has a staircase shape, and in the case of a wheelchair, 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 by driving a lifting runner that can slide vertically (vertically) with respect to the fixed post using a lifting cylinder. It is possible to get on and off a wheelchair etc. in a small space without being accompanied by a car. 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 rotated freely.By landing the tip of this wheel stop and tip plate when the platform descends and descends, a person in a wheelchair or the like can get on and off smoothly. When the passengers get on and off, the tip plate also serving as the car stop can be turned upside down and used on the second footboard.

[0007]

【Example】

 Embodiments of the lifting device according to the present invention will be described below with reference to the drawings.

1 to 10 show the configuration of the lifting device, and FIG. 11 shows an example of a shared bus as a vehicle in which the lifting device is mounted.

As shown in FIG. 11, the sideways of the shared bus 1 are provided with 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 a body frame 10 fixed to a lower position of a bus entrance / exit 2 (the upper floor of the entrance / exit is indicated by 2A) and both sides of the entrance / exit 2. And a pair of fixed posts 11 which are vertically erected and fixed to the horizontal portion of the main body frame 10 so as to be positioned in the position, and slidably provided in hollow hollow pipe-shaped guide portions 12 of the fixed posts 11, respectively. And the external connection member 14A fixed to the lower end of one of the lifting runners 13 and protruding to the outside of the fixed post 11, and the fixed post 11 fixed to the lower end of the other lifting runner 13. Of the cylinder box also serving as an external connecting member 14B, a cross member 15 for connecting and integrating the external connecting members 14A, 14B, a first connecting plate 16A, and a first step plate 1 7A, a second connecting plate 16B and a second step plate 17B are sequentially connected via a hinge, and a platform 18 having a rear end pivotally attached to the cross member side, and a platform 18 which is freely undulating and rotatable. It is provided with a vehicle stop and tip plate 19 that is movably connected, and a parallel link mechanism 20 for unfolding that changes the platform 18 from a stepwise bent state to a flattened unfolded state.

As shown in FIGS. 4 to 6, a first sheave 23 A is pivotally supported by a bracket 25 on the upper inside of the fixed post 11, and a cylinder body of a lifting hydraulic cylinder 21 for driving the lifting runner 13 up and down. The portion is pivotally attached to the lower portion of the fixed post 11 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 roller 28 rotates while contacting the inner surface of the hollow square pipe-shaped guide portion 12 of the fixed post 11, so that the elevating runner 13 moves smoothly. You can now go up and down. Then, the wire rope 27, one end of which is fixed to the upper end of the fixed post 11 via the stopper 26, is wound around the second sheave 23B and the first sheave 23A in this order, and the other end of the wire rope is fixed to the lifting runner 13. ing. Therefore, when the piston rod 24 of the lifting hydraulic cylinder 21 is contracted as shown in FIG. 5, the interval between the first and second sheaves 23A and 23B is long, and the lifting runner 13 is in the raised position, and conversely as shown in FIG. At the time of extension, the distance between the first and 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 between the lower ends of the pair of inner posts, that is, on the cross member 15 fixed by welding between the outer connecting members 14A and 14B. The rear end of the platform 18 is pivotally attached to the frame 32 via a hinge. Further, the main shaft 33 is pivotally supported below the cross member 15 by the pair of external connecting members 14A and 14B, and the main arm 34 forming one of the links of the parallel link mechanism 20 for deployment is attached to the main shaft 33. The small arm 35 is fixed together with being fixed. One end of a 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 deployment parallel link mechanism 20 includes a main arm 34, a sub arm 36, a lower frame 40, an auxiliary link 45, and an opening / closing assisting member 46. The main arm 34 and the sub arm 36 have the other ends. It is pivotally attached to the lower frame 40 by pins 47 and 48, respectively. The second tread 17B of the platform 18 is attached and fixed on the lower frame 40. The opening / closing assisting member 46 is for assisting the bending and unfolding of the first step plate 17A, is pivotally attached to an intermediate position of the main arm 34, and the assisting member between the opening / closing assisting member 46 and the lower frame 40. The link 45 is connected. The auxiliary link 45 constitutes a link parallel to the main arm 34.

The main body of the expanding 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. To be done. As a result, the main arm 34 and the sub arm 36 are in a suspended state when the expansion hydraulic cylinder 41 is extended, and are rotated 90 degrees when the expansion hydraulic cylinder 41 is contracted, so that the main arm 34 and the sub arm 36 are in a horizontal state. Therefore, the lower frame 40 moves up or down while maintaining the horizontal state according to the contraction and extension of the expanding hydraulic cylinder 41.

In order to surely 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, and a roller 52 as a cam follower which is abuttable to the cam 50 is attached to a bracket 51 fixed to the back surface of the first connecting plate 16A. As a result, the first connecting plate 16A is forcibly rotated with the rotation of the main arm 34.

7 to 9 show a car stop rotation mechanism. As shown in these figures, a vehicle stop and front end plate 19 is rotatably and rotatably connected to the front end edge of the platform 18 through a double hinge mechanism formed by connecting two hinges. ing. Triangular side plates 54 are fitted and fixed on both sides of the shafts 53A and 53B of the two hinges, and a small undulating arm 55 is fixed to an intermediate portion of the shaft 53B. 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 a 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 car stop tip plate 19 is pivotally attached to the cylinder mounting bracket 60 by a pin 61. ing. The small arm 63 is pivotally attached to the bracket 60 by a pin 64. The tip of the small arm 63 is attached to the tip of the piston rod of the undulating double-acting hydraulic cylinder 62 and one end of the undulating link 65. And are pivoted at pin 66. Further, the end portion of the bracket 67 fixed to the back surface of the second connecting plate 16B and the end portion of the triangular side plate 54 are connected by a rotating link 68. As a result, as shown in FIG. 7, the tip plate 19 also serving as a car stop is turned over when the undulating double-acting hydraulic cylinder 62 is in a contracted state and the platform 18 is bent in a stepwise manner and is placed on the second step plate 17B. Overlap. In addition, as shown in FIG. 8, when the platform 18 is in the flat plate-shaped deployed state, the triangular side plate 54 is rotated about 90 degrees by the rotation link 68 about the shaft 53A. Therefore, 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 with the expansion / contraction motion of the undulating double-acting hydraulic cylinder 62. You can do that.

The bottom surface of the entrance / exit 2 on the vehicle side is completely cut out so that the lower frame 40 of the elevating device 5 can be landed. There is a risk of dust and rainwater splashing in from the gaps in. For this reason, as shown in FIG. 3, seal plates 70 having an elastic seal material such as sponge attached inside 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 elevating 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 horizontal frame 10 which has a stepped shape as shown by the solid line in FIG. Block. Further, since the seal plate 70 is automatically opened when the elevator runner 13 descends and descends, the elevator runner 13 and the like can be prevented from descending.

In the configuration of the above-described embodiment, when the lifting device 5 is in the solid line state in FIGS. 1 and 10, the rod of the lifting hydraulic cylinder 21 is in the most contracted state as shown in FIG. Is the upper limit position, and the upper surface of the upper plate 32 fixed on the cross member 15 substantially coincides with the upper floor surface 2A of the entrance / exit 2. In addition, the expansion hydraulic cylinder 41 is in the extended state, the undulating double-acting hydraulic cylinder 62 is in the contracted state, the platform 18 is bent in a stepwise manner, and the lower surface of the first step plate 17A is supported by the opening / closing auxiliary member 46. The lower surface of the second step board 17B is fixedly supported on the lower frame 40. In addition, the tip plate 19 also serving as a car stop is turned upside down and overlaps the second step plate 17B to become substantially horizontal and functions as a step plate. In this state, normal passengers can get on and off using the first footboard 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 expanded state as indicated by an imaginary line J in FIG. That is, the deployment hydraulic cylinder 41 is actuated, and the deployment parallel link mechanism 20 raises the lower frame 40. At this time, the main arm 34 and the sub arm 36 rotate clockwise, and at their upper limit positions, the platform 18 on the lower frame deploys like a flat plate. When the platform 18 is deployed, the tip plate 19 also serving as a car stop pivots about 90 degrees by the action of the pivoting 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. In order for a wheelchair or the like to be placed on the platform 18 landed on the surface of the ground, it is necessary for the tip plate 19 also for stopping wheels to be in a down state. Therefore, the double-acting hydraulic cylinder 62 for stopping wheels is extended to move the end plate for stopping wheels. Lower the tip of 19 as shown by the solid line in FIG. In this state, a wheelchair or the like can be moved onto the platform 18. At that time, since the front end plate 19 also serves as the second footboard 17B, the upper end of the front end plate 19 also serves as an inclination when the tip of the front end plate 19 also serves as a landing gear. It can be set to 8 degrees or less, and a wheelchair or the like can be smoothly placed on the platform 18 via the tip plate 19 that also serves as a car stop. 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. , The platform 18 and the vehicle stop and tip plate 19 are maintained in an upright state, and the lifting hydraulic cylinder 21 is contracted. As a result, the elevating runner 13 rises to the upper limit position in the fixed post 11, the platform 18 and the vehicle-side entrance / exit upper floor surface 2A are at the same height, and the platform 18 and the upper floor surface 2A are located above. You can move a wheelchair etc.

On the contrary, a wheelchair or the like can be transferred to the ground by placing a 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 wheel stop and tip plate 19 stands up to prevent the wheelchair from falling. After landing the platform 18, the tip of the tip plate 19 that also serves as a car stop is lowered as shown by the solid line in FIG. 8 so that the wheelchair or the like can be moved to the ground side.

After the lifting of the wheelchair or the like is completed, if the lifting runner 13 is returned to the upper limit position and the deploying hydraulic cylinder 41 is extended, the platform 18 is re-staired as shown by the solid lines in FIGS. 1 and 10. Become a state.

The structure of the above embodiment has the following features. (1) When the passengers get on and off normally, the platform 18 has a staircase 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 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) with the hydraulic cylinder 21 for lifting and lowering. It is possible to get on and off a wheelchair, etc. in a narrow space without the movement of the. (2) A wire rope 27, one end of which is 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 end is connected to the elevating runner 13, the stroke of the ascending / descending hydraulic cylinder 21 can be enlarged to make the elevating stroke of the elevating runner 13 sufficiently large. Therefore, the height of the fixed post 11 accommodating the lifting hydraulic cylinder 21 can be reduced, and 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, the small arm 35 is fixed to the main shaft 33, and the small arm 35 is rotated by the hydraulic cylinder 41 for expansion. As a result, the width W of the upper plate 32 connected to the rear end side of the platform 18 may be substantially the same as the width of the main arm 34, even when the platform 18 has a small depth. I can respond enough. (4) The tip plate 19 also serving as a car stop on the tip side of the platform 18 is used as a footboard by being overlaid on the second footboard 17B of the platform 18 and used as a footboard, so that the effective length of the platform 18 can be made sufficiently large and the car stop The length of the combined use tip plate 19 can also be made sufficiently large, and the inclination of the upper surface of the combined use tip plate 19 can be reduced when the platform 18 is in the lowered position and the tip of the end plate 19 also serves as the ground stop. .. 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 in the case of a wheelchair or the like, the platform can be used in a flat-plate-shaped deployed state, and the size is small. It is possible to obtain an elevating device that can smoothly get on and off a wheelchair or the like with respect to a platform without hindering the driver's view.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of an embodiment of a lifting 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 car stop rotating mechanism in the embodiment and the front plate also serving as a car stop are turned upside down and overlapped with the platform.

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 Connection Member 15 Cross Member 18 Platform 19 Platform Tip for Car Stops 20 Parallel Link Mechanism 21 Lift 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)

[Claims for utility model registration] 1. A body frame fixed to the entrance / exit side of a vehicle, a pair of fixed posts vertically erected with respect to the body frame, and the pair of fixed posts. And a first and second runners, each of which is pivotally supported on the pair of fixed posts.
Of the sheave, a lifting cylinder attached to each of the pair of fixed posts, a second sheave pivotally supported by a tip end portion of a piston rod of the lifting cylinder, and between the first and second sheaves. A wire rope that is wound around and has one end fixed to the fixed post side and the other end fixed to the lifting runner, a cross member that connects between the pair of lower ends of the lifting runners, a connecting plate and a tread plate. And a rear end of which is pivotally attached to the cross member side, a front end plate also serving as a car stop connected to a step plate on the front end side of the platform, and one end of which is pivotally supported on the lower end side of the lifting runner. A main frame and a sub-arm forming a parallel link, and a lower frame pivotally attached to the other ends of the main arm and the sub-arm, respectively. A deployment link mechanism for changing the stepped plate and the connecting plate of the platform from a stepwise bent state to a flattened expanded state by attaching the stepboard on the tip side to the lower frame tip portion; A deployment cylinder that rotates the arm, and a car stop rotation that rotates the car-stop tip plate such that the tip of the car-stop tip plate turns over from the state in which the tip of the car-stop tip plate is lowered and overlaps with the step plate on the tip side. An elevating device including a moving mechanism.