JPS6023537A - Moving work scaffold apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to scaffolding devices for working on the external surfaces of large-scale structures.

When performing exterior work on large-scale tank A, it is necessary to provide scaffolding for workers. When the exterior surface of a structure is vertical, scaffolding is usually erected around the structure from the ground or a gondola is suspended from the top of the structure. However, if the outer surface of the structure is not perpendicular, such as a dome-shaped roof, there is a serious problem in forming a scaffold as described above on the outer surface. In other words, when scaffolding is erected around a structure from the ground, it is necessary to extend the scaffolding horizontally as it goes upwards, as shown in Figure 1. Therefore, it is required to have great strength, which requires a large scale. Furthermore, this method requires the worker to move on the scaffolding himself. On the other hand, since it is not possible to suspend the gondola from the top of the structure, the gondola is instead suspended by a crane as shown in Figure 2, but in this case, the gondola is prone to shaking. Moreover, it is very difficult to accurately position the gondola to the working position, making the work inefficient. On the vine, Figures 1 and 2
Both of the methods shown have the disadvantage of requiring a considerable amount of space on the ground around the structure.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide a simple and movable scaffolding device that can form a scaffold at an arbitrary height on the outer surface of a structure.

The purpose of the above is to provide a device that forms a foothold for workers when working on the outer surface of a structure, with at least three
A step for the worker is provided on the upper part of the cart equipped with several casters, and one end of the step is connected to the cart by a hinge, and an appropriate step is provided at the bottom of the step. One end of the telescoping drive means is connected to the position, and the other end of the telescoping drive means is connected to an appropriate position of the truck, and the truck is provided with a hinge for step connection. A moving operation according to the invention, characterized in that a hoisting means, one end of which is fixed to the outer surface of the structure, is connected to the other end of the hoisting means for moving the trolley in a direction substantially perpendicular to the orientation. Achieved with scaffolding equipment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below using specific examples based on the drawings.

Figure 3 is a perspective view of the main parts of the device of the present invention.
The figure is an explanatory diagram of the usage state of the device of the present invention. In the device of the present invention, casters 2 are provided at the bottom of the truck 1. In the case of FIG. 3, the cart 1 is rectangular with reeds and casters 2 are attached to its four corners. The trolley 1 is usually constructed with a metal frame, and in order to reduce weight, it is particularly preferable to use an aluminum frame. In FIG. 3, the trolley l is rectangular, but there is no particular restriction on the shape. Further, the number of casters 2 attached to the trolley 1 may be three or more, but is usually three or four. A step 3 is provided on the truck 1. This step 3 is for the worker to stand on, and there are no particular restrictions on its material and shape as long as it has appropriate strength; is preferred. Usually, a handrail 4 is provided around the step 3 to prevent the worker from falling. Step 3 is the one end (third
The upper right end (in the figure) is connected to the υ truck l by a hinge 5, and one end of the telescopic drive means 6 is connected to the lower part of the step 3. The other end of the telescopic drive means 6 is connected to the trolley 1. The telescoping driving means 6 is, for example, a motor jack or a hydraulic jack, which can be extended and retracted to an appropriate length and can support a predetermined weight.

The connections between both ends of the telescopic drive means 60, the step 763, and the truck 1 are made with a degree of freedom such that the step 3 can rotate relative to the truck 1 in accordance with the rotation of the hinge 5 as the drive means 6 expands and contracts. Generally, the connection type is rotatable about an axis parallel to the hinge 5.

Incidentally, as shown in FIG. 3, the carriage 1 may be provided with a fixing step 3' at a portion connected to the hinge connection end of the stele 7°3. The step 3' also has a handrail 94'.
can be provided.

The device of the invention is provided with hoisting means for moving the trolley 1 over the outer surface of the structure. This hoisting means has one end fixed to the outer surface of the structure and the other end fixed to the trolley 1, and expands and contracts while supporting the weight of the trolley 1 by hoisting and unwinding the rope using a hoisting drive section. This is a possible means. Specifically, for example, as shown in FIG.
It is fixed to the outer surface near the top of A, and the low f8
The rope 8 is connected in such a way that it can be wound up and unwound.
There is a type in which the other end is connected to the trolley 1. rope 8
The connection between the carriage 1 and the carriage 1 is such that when the carriage 1-7E is placed on the slope, the hinge 5 is oriented in a direction substantially perpendicular to the direction of the rope 8, and the hinge connection end is connected to the extension of the rope 8. It is done so that it is facing the direction of the object. Similarly,
As a hoisting means, as shown in FIG. There is also a method in which the other end of the rope 8 is fixed to the outer surface near the top of the structure (kamamekoyatoga B) with a fixing member 9.

In this case, when the rope 8 is wound up and unwound, the rope 8 will not slip against the surface of the structure.

In the apparatus of the present invention, since the operator on the step 3 controls the driving of the telescopic driving means and the hoisting means, it is preferable to position the operation panel 10 near the step 3, for example, on the handrail 4. Incidentally, the power supply line to the driving means on the trolley 1 may use its own cable, but it may also be built into the rope 8.

When using the apparatus of the present invention as described above, first, one end of the hoisting means is fixed on the upper outer surface of the structure (in the case of FIG. 4, the hoisting drive section 7 is fixed near the top of the structure A). In the case of FIG. 5, the fixing member 9 is fixed near the top of the structure B). Next, the operator steps on step 3 and drives the winding means to unwind the roll f8'. As shown in FIGS. 6 and 7, as the trolley 1 descends by unwinding the rope, the length of the telescopic drive means 6 is adjusted to keep the step 3 substantially horizontal at all times.

When the trolley 1 is raised by winding up the rope, the length of the telescoping drive means 6 is adjusted in the same manner to keep the step 3 substantially horizontal at all times. Note that the control in step 3 can also be automated.

In the device of the invention, it is preferable that the structure-fixed end of the hoisting means is movable on the structure. That is, for example, in the case of FIG. 4, an IJ-ding block 11 for the p-pull 8 may be provided in the vicinity of the winding drive section 7, and the winding block 11 may be made movable.
Furthermore, the drive unit 7 itself may be movable for winding. Thereby, the cart 1 can be moved up and down at any longitude of the structure A. That is, as shown in the plan view in FIG.
) to any other longitude (II-It'), after hoisting the H rope 8 and pulling the trolley 1tl upwards, the leading block 11 (or the hoisting drive unit 7 itself) t-longitude (If-If') and then drive the winding means. Similarly in the case of Fig. 5, rope 817) 7'C
) An IJ-ding block may be provided and the block may be made movable, or furthermore, the hoisting drive section 7 itself may be made movable.

As a result, as shown in the plan view of FIG. 9, the cart 1 can be moved up and down at any longitude in the same manner as in FIG. 8.

Since the device of the present invention is as described above, it is possible to form a horizontal scaffold at any height even when the structure has an outer surface with a different slope depending on the height. Of course, the device according to the invention can also be used in situations where the structure has an external surface with a constant slope, in which case the telescopic drive means is kept at a constant length during use and the horizontal scaffolding is is formed. Another advantage of the device of the present invention is that it can be used even if there is no space on the ground around the structure.

[Brief explanation of drawings]

Figures 1 and 2 are drawings showing conventional scaffolding equipment.
FIG. 3 is a perspective view of the main parts of the mobile work scaffolding device according to the present invention, and FIGS. 4 to 9 are explanatory diagrams of the usage state of the device of the present invention. Dolly, 2: Casters, 3 steps, 4: Handrail,
5: Hinge, 6: Telescoping drive means, 7: Winding drive unit, 8
: Rope, 9: Fixed member, 10: Drive operation panel, 11: Leading block, A, B: Structure. @Figure 8 Figure 9 I 179-

Claims (5)

[Claims] (1) A device for forming a foothold for workers when working on the outer surface of a structure, in which a step for the worker is provided on the upper part of a trolley equipped with at least three casters on the lower part. , one end of the step is connected to the carriage by a hinge, and one end of a telescoping drive means is connected to an appropriate position at the bottom of the step, and the telescoping drive means The other end is connected to an appropriate position on the truck, and the truck has one end outside the structure in order to move the truck in a direction substantially perpendicular to the direction of the hinge for connecting the steps. A scaffolding device for mobile work, characterized in that the other end of a hoisting means fixed to a surface is connected. (2) The hoisting means has a hoisting drive section at the fixed end of the structure, and the tip of the rope hoisted by the drive section is connected to the trolley. Apparatus according to paragraph 1. (3) The device according to item 1, wherein the hoisting means has a hoisting drive section fixed to the trolley, and the tip end of the rope hoisted by the drive section is fixed to a structure. (4) The device of paragraph 1, wherein the structure-fixed end of the hoisting means is movable on the outer surface of the structure. (5) The device according to item 1, wherein a drive operation panel for the telescoping drive means and the hoisting means is provided on the step.