JPH03197242A - Automatic platform erecting device in vertical lift device for automobile - Google Patents

Abstract

PURPOSE:To erect a platform easily by erecting the platform which is moved up and down along a pair of guide supports provided at both sides of the edge of an entrance for getting on and off a car such as a bus, in a vertical posture by striking to stoppers provided to the guide supports, when the platform is raised. CONSTITUTION:A pair of guide supports 1 provided at the entrance for getting on and off the car is composed of mainguide supports 1a to which elevating frames 2 are fit, and subguide supports 1b in which an elevating mechanism is housed. The elevating mechanism furnishes a hydraulic cylinder for lift elevating, whose piston rod is extended to move a variable block, and the elevating frames 2 are raised through wires wound to sheeves pivoted to both sides of the variable block. In this case, a platform 18 is held rotatable to the lower ends of elevating frames 2 with pins 20. And when operation levers 21 are fit to stoppers 23 appearing and disappearing by the function of an air cylinder 25 in the rising of the platform 18, the platform 18 is erected upward around the pins 20.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for raising/lowering and automatically raising a platform in a vertical lift device for automobiles, particularly high-floor automobiles such as buses.

Conventional technology Conventionally, link arm type lift devices for automobiles, such as those published in Japanese Utility Model Publication No. 59-39078 and Publication No. 61-19945, have generally been used due to their robustness, stability, operability, and price. It is used. Also, JP-A-5I-10
There is a tailgate or rear gate lifter disclosed in No. 4431 and Japanese Unexamined Patent Publication No. 60-229834.

Problems to be Solved by the Invention Conventionally, link arm type lift devices have been generally used for automobiles, but in recent years, elevated-floor buses have become mainstream, and as the floor height above ground becomes higher, the operating stroke of the link arm has become shorter. They are longer and require a larger space for getting on and off, which is difficult to secure on public roads or in parking lots. Additionally, as the ground clearance increases, lateral sway occurs, creating a sense of uneasiness for passengers getting on and off the vehicle. Furthermore, when retracted, the platform rises above the floor, which has the disadvantage of blocking windows and impairing visibility.

Means for Solving the Problem: Guide columns were installed vertically on both sides of the mouth of the entrance/exit opening in the wall of the passenger compartment, an elevating frame was fitted to each, and the platform was attached to a support shaft provided at the end of each. The base end is pivotally supported, the tip is pivoted upward, and the entire platform is rotatably constructed, and an operating lever with a roller is attached to the base end of the platform, and a corresponding lifting stopper is provided on the guide column. An automatic platform raising device for an automobile vertical lift device is provided.

Operation Since the present invention is configured as described above, when the platform is to be stored, the stopper is first projected after the platform is lowered to the lowest position. Next, when the hydraulic circuit is activated and the lift lifting piston is pushed down, the wire is pulled and is fitted into the guide column (which raises the lifting frame. The tip of the operating lever at the base of the platform Since the platform is engaged and prevented from rising, the operating lever is rotated on the engagement surface as a fulcrum (in order to rotate the platform, the platform rises around the support shaft at the base end. When it rises vertically, the hydraulic pressure is stopped and the lift is raised and lowered. If the piston is stopped, it will remain in that state.Next, when the hydraulic circuit of the lift lifting/lowering piston is opened, the lift will descend under its own weight, the platform will also fall forward under its own weight, and it will be expanded to allow molding. After that, if the stopper is moved inward, the actuating lever will pass through this part and will not engage with it, so the platform will never rise during the lifting/lowering operation.

EXAMPLES Below, this invention will be explained with reference to drawings which are examples.
1. ] is a guide column, which is composed of main guide columns ia, la into which the lifting frame 2.2 is inserted, and sub guide columns lb, lb which accommodate the lifting drive mechanism such as the lifting wire and the cylinder/piston for lifting the lift. Along with
They are welded back and forth to form an integral body, and are further connected laterally by upper and lower horizontal support frames 3 and 4 to form a left and right integrated structure. 5 is a hydraulic cylinder for raising and lowering the lift;
A piston rod 6 is actuated by oil supply from a feeding device and moves a movable block 7 connected to its lower end, and a sheave 8°9, which is pivotally supported on both sides of the block, has one end fixed to the inner wall. The wire 10°11 is hung and stretched upside down, and at the top, a sheave 12.
13 further changes the direction of the suspension and guides it downward,
The front sheave 12 is hooked and fixed to the upper end of the elevating frame 2 fitted into the main guide column 1a, and is connected to the U
, put up. The guide column 1b is suspended from the wire IN guided to the rear sheave 13, converted laterally by the lower sheave 14, passed through the horizontal support frame 4, and upwardly moved by the lower sheave 15 of the sub guide column 1b on the opposite side. The upper adjustment sheave 16 is used to guide the upper end of the elevating frame 2, hang it downward again through the upper adjustment sheave 16, lower it into the main guide IJJ column la, and fix the upper end of the elevating frame 2.The elevating frame 2 is then suspended. . The front surface of the lower end of each lifting frame 2.2 (the brackets 7.17 of this pair are welded together, and the angles 19.19 on both sides of the proximal end of the plastic foam 18 are supported by pins 20° 20 so that they can rise freely). The base end of each anchor 19.19 extends one distance rearward from the pin position, connects with the lower end of the lifting frame 2, and supports the floor surface of the platform 18 at a horizontal angle.Each bracket, bottom 17, 17 Pin 20.2 inside
21, 21 are provided on both sides of the base end of the platform 18. Rollers 22 and 22 are attached to the tips thereof.

23.23 is a stopper, whose base end is supported by a support shaft 24.24, whose intermediate part is connected to a piston rod 26.2B operated by an air cylinder 25.25, and which rotates around its base end to stop its tip. is provided so that it can freely appear and retract within the lifting passage at the tip of the actuating lever 21, and when it protrudes into the passage, it engages with the rising actuating lever 21, and furthermore, the movement is stopped and the proximal shaft support is moved. It is provided so that the platform 18 can be raised. 27.28
is a reinforcing block.

Effects of the Invention This invention enables the movement of wires within the guide column. Since the platform is supported by a lifting frame that lowers and lowers, it lifts vertically and requires less space for getting on and off compared to conventional link arm type lifts. can be activated. In addition, the guide column is divided into the main guide column into which the lifting frame is fitted, and the sub-guide column which accommodates the wires, hydraulic equipment, and sheave.Moreover, these are made of lava stone at the front and rear, so the form is simple and easy to manufacture. In addition, it is strong and sturdy, and in particular, it has sufficient precision with the lifting frame, so there is little lateral sway, and there is no sense of anxiety even when it is installed on a high-floor bus.Furthermore, there is a stopper at any point when the lift is activated. Since the platform can be set up and raised, the platform can be housed below the window without blocking the window or obstructing the view at all.

Therefore, it is possible to install a device that makes getting in and out of the car easier without changing the appearance of the car.

In addition, with this device, by installing an electric sensor,
Elevating and lowering the platform and launching and retracting the platform can be performed automatically by button operation.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the overall appearance of a vertical lift device for an automobile equipped with the inventive device, and Fig. 2 is a diagram showing the main parts of the platform lifting mechanism. 3 is a front view of the single guide column, 4 is a cross sectional view taken along the line A-A in 3, 5 is an explanatory diagram of the arrangement of lifting wires, and 6 is a view of the platform standing. FIG. 7 is a front view of the main parts of the lifting device, and FIG. 7 is an inner side view of one of them. 1...Guide support post, 1a...Main guide support post, 1b...
・Sub guide column, 2... Elevating frame, 3.4...
Horizontal support frame, 5... Hydraulic cylinder 6... Piston rod, 7... Movable block, 8, 9... Intermediate sheave, 10.11... Wire 12.13... Upper sheave, 14.15 ...Lower sheave, 16...Upper adjustment sheave, 17...Bracket, 18...Platform, 19...Angle, 20...Bin, 2I...
Start-up activation lever, 22...roller...23...stop lever 124/support? III, 25...Air cylinder, 26...Piston rod, 27.28...Reinforcement block.

Claims (4)

[Claims] (1) Guide pillars are installed vertically on both sides of the mouth of the entrance/exit opening in the vehicle wall of the passenger compartment, an elevating frame is fitted to each, and the base end of the platform is pivoted to the support shaft provided at the lower end of each. The platform is constructed so that the entire platform can be rotated with the tip upward, and an operating lever with a roller at the tip is attached to the base end of the platform, and a corresponding raising stopper is provided on the guide column. Automatic platform raising device for vertical lift equipment for automobiles. (2) The guide column consists of a main guide column into which the lifting frame is fitted, a sub-guide column which mainly accommodates a hydraulic operating mechanism consisting of a hydraulic cylinder and a piston rod, a wire that is transmitted to this mechanism, and a sheave that guides the wire. A guide column for a vertical lift for an automobile, which is provided and welded together in the front and rear, and further welded and connected together with left and right horizontal support frames. (3) A wire guide device for a vertical lift for automobiles, in which a hydraulic actuator is housed in one guide column, and a lift frame is raised and lowered by a wire guided through a horizontal support frame in the other guide column. (4) A third feature in which the guided wire is guided by a vertically adjustable sheave within the upper part of the guide column.
Wire guiding device for an automobile vertical lift as described in Section 1.