JPH0146671B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a gondola that is used for cleaning the walls of a building, for example, and a gondola that is equipped with a plurality of winches for raising and lowering the gondola. Regarding a lifting device.

BACKGROUND ART FIG. 6 is a schematic front view showing a conventional gondola elevating device. In the figure, a gondola 1 includes a work floor 2 for carrying a worker, a left horizontal frame 3 located on the left, and a right horizontal frame 4 located on the right.
and a plurality of handrails 5 extending left and right. The left horizontal frame 3 and the right horizontal frame 4 each include a winch 6 for raising and lowering the gondola 1,
7 is fixedly attached. Furthermore, rope guides 10 and 11 are provided on the upper portions of the left lateral frame 3 and the right lateral frame 4, respectively, for accurately guiding the wire ropes 8 and 9 to the winches 6 and 7. As is well known, winch 6,
7 each have a winding drum around which wire ropes 8 and 9 guided through rope guides 10 and 11 are wound, and the gondola 1 is raised and lowered by rotating the winding drums. .

Such conventional gondola lifting devices have the following drawbacks. That is, as shown in FIG. 7, for example, if the work floor 2 is tilted while the gondola is being raised or lowered, the wire ropes 8 and 9 will be bent at the rope guide parts 10 and 11, and will be subjected to a large frictional force there. become. Therefore, the wire ropes 8 and 9 are damaged.

OBJECTS OF THE INVENTION Therefore, it is an object of the present invention to provide a gondola lifting device that does not damage the wire rope even if, for example, the work floor is tilted while the gondola is being lifted or lowered.

Configuration of the Invention A gondola elevating device according to the present invention includes a gondola and a plurality of winches for elevating and lowering the gondola. The plurality of winches are rotatably attached to the gondola via pins arranged parallel to each other.

This configuration achieves the above objectives.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention is shown in FIGS. 1-3. First, referring to FIGS. 1 and 2, the gondola 1 includes a work floor 2, a left lateral frame 3, a right lateral frame 4, and a handrail 5.
The work floor 2 consists of a pair of floor beams 12 and 13 that extend left and right, that is, parallel to the work wall surface, and a floor plate 14 that is attached across the floor beams 12 and 13.

Also, gondola 1 has two winches 6 and 7.
are rotatably attached via pins 15 arranged parallel to each other. This will be explained in detail with reference to FIG.

A winch attachment beam 16 is arranged between a pair of floor beams 12 and 13 that face each other and extend in the left-right direction, that is, parallel to the work wall surface. Floor beam 1
2 and 13 are formed with through holes 17 and 18, respectively, and through holes 19 and 20 that are aligned with the through holes 17 and 18 are formed in the winch attachment beam 16. Then, the aligned through holes 17, 19 and 18, 2
A pin 15 is inserted through each of the winch mounting beams 16, so that the winch mounting beam 16 is rotatably supported by the floor beams 12 and 13. In addition, pin 15
A male thread is formed at the tip of the pin 15, and by screwing this male thread and the nut 21 together, the pin 15 is prevented from coming out of the through hole.

A U-shaped winch mounting frame 22 is fixed to the winch mounting beam 16 by, for example, welding.
A mounting member 24 having a mounting hole 23 is fixed to the upper part of the winch mounting frame 22 . In addition, the winch mounting beam 16 located within the winch mounting frame 22
Two mounting holes 25 and 26 are formed in the portion. Winches 6 and 7 each have mounting holes 2
It is fixedly attached to the winch attachment frame 22 and the winch attachment beam 16 via screws (not shown) inserted through the winch attachment frame 22 and the winch attachment beam 16. Additionally, two support members 27 and 28 are provided at the top of the winch mounting frame 22.
A guide pipe 29 extending in the vertical direction is fixedly attached thereto. The wire ropes 8 and 9 each pass through this guide pipe 29, and further pass through a through hole 30 provided in the upper part of the winch mounting frame 22, and are guided to the winches 6 and 7.

In this way, the winches 6 and 7 are provided so as to be rotatable about the axis passing through the pin 15. usually,
The pin 15 faces in a direction perpendicular to the work wall surface. Therefore, the winches 6 and 7 can rotate along a plane parallel to the work wall surface.

In the embodiment described above, the winches 6, 7 were mounted close to the work floor 2 of the gondola 1.
However, as shown in FIG. 4, the winches 6, 7 may be mounted above the work floor 2, for example by using a tall winch mounting frame 22. Furthermore, in the embodiments described above,
Although the winches 6 and 7 were installed between the left lateral frame 3 and the right lateral frame 4 of the gondola 1, they are not limited to such a structure. For example, as shown in FIG. 5, the floor beams 12 and 13 are made long enough to protrude beyond the left horizontal frame 3 and the right horizontal frame 4, and the left and right ends of the floor beams 12 and 13 are The winches 6 and 7 may be attached to each of them.

Effects of the Invention The effects obtained by the present invention will be explained in comparison with a conventional gondola elevating device.

First, if the work floor tilts while the gondola is going up and down,
In the conventional gondola lifting device, as shown in FIG.
11, which caused damage to the wire ropes 8 and 9. On the other hand, according to the present invention, as shown in FIG.
Since the wire ropes 8 and 9 rotate relative to each other around the axis passing through the pin 15 together with the guide pipe 9, the wire ropes 8 and 9 are not bent at the upper end of the guide pipe 29, and damage to the wire ropes 8 and 9 is prevented. Don't let it happen.

In the conventional gondola lifting device, when the spacing between the hanging cores is too narrow as shown in FIG. 9, or when the spacing between the hanging cores is too wide as shown in FIG. , 11, the bending of the wire ropes 8, 9 becomes large, resulting in damage to the wire ropes 8, 9. In order to prevent this, when the wire ropes 8 and 9 are mounted, the distance between the hanging cores of the wire ropes 8 and 9 must be adjusted accurately, which results in deterioration of workability. On the other hand, according to the present invention, the eleventh
As shown in the figure and FIG.
Since the wire ropes 8, 9 are rotated to a position where they are straightly extended, the wire ropes 8, 9 are not damaged. Further, since there is no need to adjust the interval between hanging cores, work efficiency is improved.

As shown by the broken lines in FIGS. 13 and 14,
For example, it may be necessary to move the gondola 1 over an obstacle 31, such as a porch. In this case, as shown in the figure, the worker 32 first uses, for example, a rope 33 to lift the gondola.
is moved to the side of the obstacle 31. At this time, in the conventional gondola lifting device, as shown in FIG.
It gets bent at 11. On the other hand, according to the present invention, as shown in FIG. 14, the winches 6 and 7 rotate to the position where the wire ropes 8 and 9 are stretched linearly, so that the wire ropes 8 and 9 are not bent. and will not be damaged.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of a gondola elevating device according to the present invention. FIG. 2 is a sectional view taken along line - in FIG. 1. Third
This figure is an exploded perspective view showing a specific structure for rotatably attaching the winches 6 and 7 shown in FIGS. 1 and 2 to the gondola 1. FIG. 4 is a front view showing another embodiment of the invention.
FIG. 5 is a front view showing still another embodiment of the invention. FIG. 6 is a front view showing a conventional gondola lifting device. FIG. 7 is a diagram showing a state after the work floor 2 is tilted from the state shown in FIG. FIG. 8 is a diagram showing a state after the work floor 2 is tilted from the state shown in FIG. 9 and 10 are illustrative views showing a conventional gondola lifting device, respectively, and the state shown in FIG. 9 is the state when the distance between the hanging cores of the wire ropes 8 and 9 is narrow, and the state shown in FIG. In the state shown in FIG.
This is the state when the distance between the hanging cores is wide. 11 and 12 are illustrative views showing one embodiment of the present invention, and the state shown in FIG. The state shown in the figure is a state when the distance between the hanging cores of the wire ropes 8 and 9 is wide. 13 and 14 are illustrative views showing the state when the gondola 1 is moved over the obstacle 31 protruding from the work wall surface, and FIG. 13 shows the case where a conventional gondola lifting device is used. FIG. 14 shows a case using an embodiment of the present invention. In the figure, 1 is a gondola, 6 and 7 are winches, and 15 is a pin.

Claims (1)

[Scope of Claims] 1. A gondola, and a plurality of winches for raising and lowering the gondola, each of the plurality of winches being rotatable relative to the gondola via pins arranged parallel to each other. Gondola lifting device installed.