JPH0644953Y2 - Lifts for work in high places - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a lift for an aerial work vehicle used for aerial work or stacking of luggage in various works.

[Conventional technology]

BACKGROUND ART Conventionally, lifts for aerial work platforms using fluid pressure cylinders have been used for stacking luggage on a warehouse or a vehicle bed, and for installing or removing equipment in various works such as air conditioning, piping, or construction. .

Such a lift for an aerial work vehicle supports a fluid pressure cylinder in an upright posture in a vertical and upward direction, and therefore a plurality of legs extending radially outward from the lower end of the fluid pressure cylinder are detachable. It is installed and configured as possible.

By the way, when the work at a certain place is finished and the work site is changed, it is necessary to move the aerial work platform lift. In general, the plurality of legs are disassembled into pieces, and the legs are carried on a carriage for transportation.

In addition, the legs are rotatably connected at the rear end (the root of the fluid pressure cylinder) for easy transportation, and the legs are folded parallel to the axis of the fluid pressure cylinder during transportation. Lifts for work platforms are also proposed.

[Problems to be solved by the device]

However, these conventional lifts for aerial work vehicles have to be carried by either a method of mounting them on a carriage for carrying or carrying them by a worker's hand, which is not easy to carry.

The present invention has been made in view of the above problems, and an object thereof is to provide a lift for an aerial work vehicle that can be easily transported.

[Means for Solving the Problems]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a fluid pressure cylinder and a plurality of fluid pressure cylinders extending in a radial direction from a lower end of the fluid pressure cylinder to support the fluid pressure cylinder in a vertical and upward standing posture. A lift for an aerial work vehicle, comprising: a leg portion, wherein the plurality of leg portions are in contact with the respective tip portions on the floor surface when the fluid pressure cylinder is in the standing posture. Casters are attached, and at their rear ends, they are detachably attached to the fluid pressure cylinder, and at least two of the legs are substantially parallel to the axial direction of the fluid pressure cylinder. When the fluid pressure cylinder is in the lying posture, the caster of the leg portion can be attached to the lower end portion of the fluid pressure cylinder in a state of being in contact with the floor surface.

[Action]

In the standing posture, the fluid pressure cylinder is supported by a plurality of, for example, four legs, and can be moved by casters attached to the tips of the legs.

When transporting the fluid pressure cylinder, at least two legs are removed, and when the fluid pressure cylinder is in the lying position, the casters of the legs are substantially parallel to the axial direction of the fluid pressure cylinder. It is reattached so that it touches the surface. The remounted leg casters transport the hydraulic cylinder in a lying position.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a state of using the lift 1 for aerial work vehicles, FIG. 2 is a plan view of the lift 1 for aerial work of FIG. 1,
FIG. 3 is a partially enlarged view of the lift 1 for an aerial work vehicle of FIG.

The lift 1 for an aerial work vehicle has four hydraulic cylinders 11 and four radially extending outward from the lower end of the hydraulic cylinders 11 for supporting the hydraulic cylinders 11 on the floor surface FL in an upright posture that is vertically and upwardly directed. It is composed of legs 12 to 15 and so on.

The hydraulic cylinder 11 is of a telescope type that extends in three stages, has an oil tank inside, and has a rod at the lower end.
Ports 28, 28 for extending or contracting 11a, 11b are provided, and are connected to a hydraulic unit 17 described later by hoses 29, 29 connected to the ports 28, 28. At the tip of the rod 11a that extends to the innermost and tip of the hydraulic cylinder 11,
A working plate 25 is detachably attached by four bolts 16 having a rotary knob. This plate 25
Has holes necessary for transportation, which will be described later, at appropriate places. A support 26, which is used when the lift 1 for an aerial work vehicle is transported, is attached to the axial center of the outermost tube 11c of the hydraulic cylinder 11. This support
The 26 has holes and screw holes required for transportation in place.

At the lower end of the hydraulic cylinder 11, a mounting bracket 21 for mounting the legs 12 to 15 is mounted by winding the outer peripheral surface of the hydraulic cylinder 11.

The mounting bracket 21 has protrusions 22, 22 ... that protrude outward in the radial direction at four locations that are equally divided in the circumferential direction. The tip of each protrusion 22 is triangular in shape. A screw hole 23 parallel to the axial direction of the hydraulic cylinder 11 is formed in each of the protrusions 22.

Each leg 12-15 is a leg body 3 made of square pipe.
1, caster 3 attached to the tip of leg body 31
2. The auxiliary plate 33 is attached to the rear end of the leg body 31 and has a hole 33a, and a reinforcing metal fitting 34. The leg body 31 is provided with a hole 35 at its rear end, and after the leg body 31 is inserted so as to fit into the outer periphery of each protruding portion 22, by the bolt 16 having the same structure as described above, The legs 12 to 15 are fixed to the respective protrusions 22. In addition, the leg body 31 is provided with holes and screw holes necessary for transportation at appropriate places.

A grip 18 used for carrying the lift 1 for an aerial work vehicle is attached to the tip of the leg 12.

A hydraulic unit 17 having a known configuration including a hydraulic pump 41, a motor 42 and the like is provided on the leg portion 14 and has a structure similar to that described above.
It is detachably attached with individual bolts 16.

The lift 1 for an aerial work vehicle configured as described above, when in use, has the floor FL in an upright posture by the four legs 12 to 15.
It is supported on and is movable by the casters 32. By operating the hydraulic unit 17, the rod 11a,
11b extends or contracts, and the plate 25 moves up and down.

Next, a case of carrying the above-described lifter 1 for an aerial work vehicle will be described.

FIG. 4 is a front view showing a state of the lift 1 for aerial work vehicles during transportation, and FIG. 5 is a left side view of the lift 1 for aerial work of FIG.

At the time of transportation, from the state shown in FIG. 1, first, the hydraulic unit 17 and the plate 25 are removed by loosening the bolts 16 fixing the hydraulic unit 17 and the plate 25, respectively. Then, next, only the leg portion 12 is left, the bolt 16 is loosened, and the other leg portions 13 to 15 are removed.

Any two of the three removed legs 13-15 1
With the casters 3 and 15 parallel to the axial direction of the hydraulic cylinder 11 and the casters 32 facing outward (downward in FIG. 4) as shown in FIG. The auxiliary plate 33 is brought into contact with the lower surface (the right surface in FIG. 4) of the protrusion 22 to which the legs 13 and 15 are attached, and the bolt 16 is screwed into the screw hole 23 of the protrusion 22 from the auxiliary plate 33 side. Fix and fix it.

In this state, the hydraulic cylinder 11 is tilted from the standing posture to the lying posture as shown in FIG. Then the floor
On the FL, the center of the hydraulic cylinder 11 is 2 of the legs 13,15.
It is supported by one caster 32, or is supported at three points by two casters 32 and the protrusion 22 to which the leg portion 14 is attached. At this time, the upper surface of the leg body 31 of each of the leg portions 13 and 15 comes into contact with and is supported by the lower surface of the support 26.

Next, the plate 25 is placed on the upper surface of the support 26, the hydraulic unit 17 is placed thereon, and the two bolts 16 removed
The hydraulic unit 17 and the plate 25 are fixed to the support 26 at the same time. At this time, the hose 29 between the hydraulic unit 17 and the hydraulic cylinder 11, and the control cord and power cord connected to the hydraulic unit 17 may be wound between the hydraulic unit 17 and the leg portion 12. .

The other leg 14 is a hydraulic unit on the upper surface of the plate 25.
Placed parallel to the axis of the hydraulic cylinder 11 on the side of 17,
It is fixed to the plate 25 by the two removed bolts 16.

Such a state is the state shown in FIGS. 4 and 5.

Lift for aerial work vehicles that have been laid down for transportation 1
Is a state in which the operator holds the grip 18 and the protruding portion 22 protruding downward is floated above the floor surface FL, and the casters 32, 3
Using 2, push or pull in the direction of arrow M1 in FIG. 4 to move.

Further, when the lift 1 for an aerial work vehicle is loaded on an automobile or the like to be transported, the legs 12 are also removed, and the removed legs 12 are mounted on the upper surface of the plate 25 in the same manner as the legs 14. It is placed parallel to the axis of the hydraulic cylinder 11 on the side of the plate and fixed to the plate 25 by two bolts 16. As a result, the entire aerial work vehicle lift 1 is compactly and integrally assembled for transportation, and the transportation is easy.

In the above-described embodiment, various hydraulic cylinders such as a telescopic type having four or more stages or a non-telescopic type can be used as the hydraulic cylinder 11.
Instead of the hydraulic cylinder 11, a pneumatic cylinder may be used. A manual pump may be used without using the hydraulic unit 17.

[Effect of device]

According to the present invention, it is possible to easily carry by using the casters attached to the lift for working in high places.

[Brief description of drawings]

FIG. 1 is a front view showing a state of using the lift for working at high places, FIG. 2 is a plan view of the lift for working at high places of FIG. 1, and FIG.
1 is a partially enlarged view of the lift for working at high places in FIG. 1, FIG. 4 is a front view showing a state of the lift for working at high places during transportation, and FIG. 5 is a left side of the lift for working at high places in FIG. It is a side view. 1 ... lift for work at high places, 11 ... hydraulic cylinder (fluid pressure cylinder), 12-15 ... legs, 32 ... casters, FL ...
…Floor.

Claims (1)

[Scope of utility model registration request] 1. A fluid pressure cylinder, and a plurality of legs extending radially outward from a lower end portion of the fluid pressure cylinder for supporting the fluid pressure cylinder in a vertically and upwardly oriented standing posture. A lift for working in high places, wherein each of the plurality of legs has a caster attached to the floor surface at the tip of each leg when the fluid pressure cylinder is in the standing posture. , The rear end portions of the fluid pressure cylinders are detachably attached to the fluid pressure cylinders, and the at least two legs are substantially parallel to the axial direction of the fluid pressure cylinders. A lift for working in high places, characterized in that the caster of the leg is in contact with the floor surface when it is in the lying position, and is configured to be attached to the lower end of the fluid pressure cylinder.