JPH0141595B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wheelchair auxiliary trolley for an escalator used when a wheelchair user uses an escalator.

[Technical background of the invention and its problems]

BACKGROUND OF THE INVENTION With the development of transportation systems, railway station platforms and the like have been installed higher or lower than ground level, and as a result, an increasing number of stations have installed escalators to improve passenger convenience.

However, it is extremely difficult for wheelchair users to use escalators, and even if they get on the escalator with an attendant, they will not be able to place the wheelchair horizontally on top of the first step of the escalator; Since the user has no choice but to straddle steps and tilt the wheelchair, there is a high possibility that the wheelchair will fall, which is extremely dangerous.

Additionally, escalators with a special structure that carry both wheelchairs and general passengers cannot often be installed due to the structure of station buildings, etc. On the other hand, there are places where escalators exclusively for wheelchairs are installed, but they are not escalators for general users. The disadvantage is that it must be installed separately.

Therefore, in order to eliminate the above-mentioned drawbacks, the present applicant has filed a patent application separately from this invention for a wheelchair auxiliary cart for escalators having the structure shown in FIGS. 1 and 2.

Below, the bogie structure related to this separate application will be described as
To explain according to the drawings in Figures 2 and 2, 1 in the figure is a trolley body on which wheelchair B on which wheelchair user A rides is placed, a floor plate 2 on which wheelchair B is placed, and an attendant fixed upright on both the left and right sides of this floor plate. C is equipped with rear side handle rods 3a and front side handle rods 3b which can be held and pushed by hand, and front wheels 4 and rotatable casters are provided on both front and rear sides of the trolley body 1. The rear wheels 5 are pivoted with a distance between the axes spanning three escalator steps S. 6 is a step forming movement of the trolley body 1 carrying the wheelchair B from the step horizontal part SL of the escalator as shown in Fig. 2;
Or vice versa, it is a device that raises and lowers the rear wheels in accordance with the step horizontal formation movement from the step section SK, and always maintains the horizontal state. A hydraulic cylinder 7 that operates a piston in the step direction is installed vertically on the rear wheel side, and a step grounding body is attached to the lower end of the piston rod 7a of this hydraulic cylinder with a pivot pin 8 so as to be tiltable back and forth. 9, and a hydraulic power unit 10 (pump, motor, oil tank) that is mounted on the truck body 1 and operates the hydraulic cylinder 7 by an attendant C's switch operation.
and a battery 11 for its operating power source. The operating switch 12 for operating the hydraulic cylinder 7 is operated by an attendant C on the rear handle lever 3a.
is provided on the handle that is held by hand. .

Therefore, to explain how to use the auxiliary trolley related to the separate application structured as described above, first, attendant C who has been pushing wheelchair B stops wheelchair B near the escalator entrance, and then The wheelchair B loaded with the user is placed on the prepared auxiliary trolley, and the auxiliary trolley carrying the wheelchair is pushed to the escalator entrance (hereinafter, the case of the lower floor entrance will be described). Waiting for the vehicle to stop, the cart is positioned on the lower step horizontal portion SL of the escalator step S as shown in the lower left view of FIG. 2, and is stopped. After boarding the cart, the escalator is started and the escalator is stopped when the cart reaches the upper step horizontal portion SH of the escalator, thereby performing manual or automatic escalator operation. In this case, the attendant C lowers the hydraulic cylinder 7 by operating a switch in accordance with the stair formation movement from the lower step horizontal part SL of the escalator, and brings the step contact body 9 at the lower end of the piston rod 7a into contact with the step surface. The trolley body 1 on which wheelchair B is placed is placed on the floor and pushed up by its contact with the floor.
The front wheel 4 is used as a fulcrum to raise the rear wheel side as shown in the middle diagram of FIG. 2, and the rear wheel is moved upward while always maintaining a horizontal state. Then, the escalator step S moves from the staircase part SK to the upper stair step horizontal part SH.
Immediately before the step transitions to and stops, the operation switch 12 is activated again, and the hydraulic cylinder 7 and the step contact body 9 at the lower end of the cylinder piston rod 7a are activated in accordance with the step horizontal formation movement from the step section SK. to operate the rise. In this way, the auxiliary trolley carrying a wheelchair can be raised from the lower floor entrance of the escalator to the upper floor entrance in a state that is always maintained horizontally, and the upper step horizontal part SH of the escalator can be raised as shown in Figure 1. The auxiliary trolley loaded with a wheelchair that has been stopped for transportation can be easily pushed out to the floor side of the upper escalator entrance with the intermediate wheels 13 and front wheels 4 brought into contact with the floor by raising the hydraulic cylinder 7.

The structure and operation of the wheelchair auxiliary trolley related to the above-mentioned separate application are as described above, and the hydraulic cylinder 7 installed in this auxiliary trolley has a piston rod 7a that freely rotates around the vertical axis. The problem is that the pivotable step ground body 9 attached to the lower end of the piston rod 7a with a pivot pin 8 contacts the step surface in a direction other than the normal direction as shown in Fig. 1. There is. Note that the step contacting body 9 is turned, for example, in a direction perpendicular to the moving direction of the step S (the pivot pin 8 of the step contacting body 9 faces in the longitudinal axis direction of the truck body 1, and this pin 8 When the step contacting body 9 is in contact with the step surface in a state in which it rotates in the left-right direction with In line with exercise,
When the hydraulic cylinder 7 is lowered and raised, etc., the step contacting body 9 does not rotate in the step forming direction, causing problems such as excessive force being applied to the mounting portion of the flooring member and causing damage. arise.

[Purpose of the invention]

This invention was made in order to solve the problems mentioned above in the separate application, and is a wheelchair auxiliary trolley for escalators that always maintains the step contacting body in the normal direction and prevents it from turning. The purpose is to provide

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention provides a guide rod insertion hole at a position near the hydraulic cylinder attachment part of the truck body, and also allows the piston rod to be inserted from the step floor body attachment position at the lower end of the piston rod of the hydraulic cylinder. A guide rod for stopping the rotation of the piston is erected in parallel with the guide rod and moves up and down following the piston rod that is slidably fitted into the guide rod insertion hole, and the pivoting type step contact is achieved by the anti-rotation action of this guide rod. It is characterized by preventing the floor body from turning in the horizontal plane.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings of FIGS. 3 to 7. This wheelchair auxiliary trolley for escalators allows wheelchair user A to use the escalator accompanied by an attendant C.
A trolley body 1 on which a wheelchair B can be placed and pushed, and two or more escalator steps S (in the case of the embodiment, three
front and rear wheels 4, 5 pivoted at a spacing between the front and rear axles spanning the step surface of the step), and stair-forming movement from the step horizontal part SL of the escalator provided on the trolley body 1;
Or vice versa, the trolley body 1 on which the wheelchair B is placed is
A wheelchair auxiliary trolley having a structure similar to that of the above-mentioned separate application, which is equipped with a hydraulic cylinder type trolley horizontal maintenance device 6 that raises and lowers the rear wheel side and always maintains a horizontal state (this trolley structure is almost the same). because there is,
(The same reference numerals are given to the same parts, and the detailed description of the structure and operation will be omitted.) A guide rod insertion hole 14 is provided in the vicinity of the mounting portion of the hydraulic cylinder 7 of the truck body 1, and Piston rotation that moves up and down from the position of the step ground body attachment part 19 at the lower end of the piston rod 7a of the hydraulic cylinder 7, following the piston rod 7a which is parallel to the piston rod 7a and is slidably fitted into the guide rod insertion hole 14. It is characterized in that a stopper guide rod 15 is provided upright to prevent rotation of the pivotable step grounding body 9 in a horizontal plane by the rotation prevention action of the guide rod. The lower end of the rod 15 is fastened to a bracket 16 which is fixed and protruded from the flooring body attachment part 19 with a nut 17 as shown in FIGS. 5 to 7. In the figure, reference numeral 18 denotes a pivot pin of the step flooring body 9, which is inserted and fixed into the flooring body mounting portion 19 in a direction perpendicular to the longitudinal axis of the truck body 1. Reference numeral 9a indicates an elastic anti-slip plate made of a material having a large friction coefficient, such as nitrile rubber, which is attached to the lower surface of the step floor body 9.

〔Effect of the invention〕

As described above, the wheelchair auxiliary trolley for an escalator according to the present invention has a guide rod insertion hole provided in the vicinity of the hydraulic cylinder mounting portion of the trolley body, and the guide rod insertion hole is provided at a position near the hydraulic cylinder mounting portion of the hydraulic cylinder, and from the step floor mounting portion mounting portion of the piston rod of the hydraulic cylinder. , Since a guide rod for stopping the rotation of the piston is provided upright parallel to the piston rod and slidingly fitted into the guide rod insertion hole to move up and down following the piston rod, the rotation prevention action of this guide rod allows the piston to pivot. It is possible to prevent the step contacting body from turning in the horizontal plane. In other words, the piston rod of the hydraulic cylinder rotates freely around the vertical axis, and the pivotable step foot body attached to the lower end of the piston rod with a pivot pin turns in a direction other than its normal direction. The conventional problem is that the step surface contacts the step surface when the step surface is in contact with the step surface (for example, if the step contact body 9 contacts the step surface in a state where it is turned in a direction perpendicular to the moving direction of the step S, the step surface becomes horizontal. When operating the hydraulic cylinder to lower and raise in accordance with the step forming movement from the step part, or vice versa, the horizontal form forming movement from the step part, etc.
It is possible to easily solve the problem that the step contacting body does not rotate in the step forming direction and an unreasonable force is applied to the attachment portion of the step contacting body, causing damage.

[Brief explanation of drawings]

Fig. 1 is a side view of a wheelchair auxiliary trolley for an escalator, which is related to a separate patent application filed separately from this invention by the present applicant, when the escalator is stopped at the upper floor of the escalator, and Fig. 2 shows the auxiliary trolley in use on an escalator. FIG. 3 is a side view showing a wheelchair auxiliary trolley according to an embodiment of the present invention in a state similar to FIG. FIG. 5 is a detailed view of the main part of the present invention, FIG. 6 is a left side view of FIG. 5, and FIG. 7 is a bottom view of the same. A...Wheelchair user, B...Wheelchair, C...Attendant, S...Escalator steps, SL...Horizontal part of lower stair steps, SK...Tread step part, SL...Horizontal part of upper stair steps, 1 ... Bogie body, 3a, 3b... Front and rear handle rods, 4... Front wheel, 5... Rear wheel, 6... Bogie level maintenance device, 7... Hydraulic cylinder, 7a... Piston rod, 9 ... Step floor body, 10 ... Hydraulic power unit, 11 ... Battery, 13 ... Intermediate wheel, 14 ... Guide rod insertion hole, 15 ... Guide rod, 16 ... Bracket,
17...nut, 18...ground body pivot pin, 19
...Front-ground body mounting part.

Claims (1)

[Claims] 1. A trolley body that allows wheelchair users to use escalators accompanied by an attendant, on which a wheelchair can be placed and pushed, and two or more steps of escalator steps on the front and rear parts of this trolley body. The front and rear wheels are pivoted at a spacing between the front and rear axles spanning the surface, and the trolley body is provided with a step forming movement from the horizontal step part of the escalator, or vice versa, in accordance with the horizontal step forming movement from the step part of the escalator. , in a wheelchair auxiliary trolley for an escalator, which is equipped with a hydraulic cylinder type trolley horizontal maintenance device that raises and lowers the rear wheel side of the trolley body on which the wheelchair is placed and always maintains a horizontal state; A guide rod insertion hole is provided at a position near the hydraulic cylinder mounting portion of the hydraulic cylinder, and the guide rod is inserted into the guide rod insertion hole parallel to the piston rod from the step floor mounting portion of the lower end of the piston rod of the hydraulic cylinder. A guide rod for stopping the rotation of the piston, which moves up and down following the piston rod, is installed upright, and the rotation preventing action of this guide rod prevents the pivoting type step-floor body from turning in a horizontal plane. A wheelchair auxiliary trolley for escalators featuring: