JPH04285262A - Expandable unit, expandable scaffold, and method of assembling and disassembling scaffold - Google Patents

Abstract

PURPOSE:To rapidly and easily build up a building scaffold at a Job site. CONSTITUTION:Expandable units which are vertically extendible and retractable are transported to a job side in their retracted condition, and then the upper parts of the expandable units are lifted up by a crane or the like so that they are extended. Then the expandable units are secured in the extended condition so as to build a scaffold. As a device for attaining the above-mentioned method, both ends of support rods 20 are fitted slidably in horizontal rods 10 which are laid being spaced vertically. Further, the horizontal rods 10 can be held being spaced from each other by a predetermined distance by the support rods 20 so as to constitute a minimum unit of the expandable units. These expandable units are suitably coupled together beforehand, and scaffold plates 50 are attached to unit coupling members beforehand.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to improvements in work scaffolding used when constructing structures such as buildings. More specifically, the present invention relates to a work scaffold that can be constructed and used on-site by easily connecting telescopic units according to the size of a building, and that can be easily reduced in size after work is completed.

0002

2. Description of the Related Art Conventional work scaffolds were constructed by assembling separate pipes vertically and horizontally at a construction site and fixing them at appropriate points with connecting members.

0003

[Problems to be Solved by the Invention] However, the work scaffolds of the prior art require a large number of people and a lot of time to construct. Similar problems also occurred during demolition work after the work was completed.

0004

[Means for Solving the Problems] The means adopted by the present invention to solve the above problems includes two horizontal rods disposed vertically, and a support column slidably attached between these horizontal rods. , a telescopic unit having fixing means for fixing the support column to a horizontal rod is used as the minimum unit of the work scaffold construction member. In addition, this telescopic unit can be connected and expanded vertically and/or horizontally,
This constitutes a unit intermediate body, and the unit intermediate body is made to face another unit intermediate body having the same structure in parallel with each other and perpendicularly, and a scaffold plate is locked between the pair of unit intermediate bodies to form a unit connection body. The invention is characterized in that one or more of the unit connectors are connected to constitute a work scaffold construction member. Furthermore, an extensible body configured to be able to expand and contract in the vertical direction is stored/transported in a reduced state, and upon arrival at the construction site, it is lowered to the desired location for building scaffolding, and lifted there to extend the extensible body. Build a work scaffold by fixing the expansion and contraction of the extensible body in the stretched state,
Alternatively, the constructed work scaffold may be dismantled by unfixing it.

[0005]

[Operation] The telescopic unit of the present invention is capable of stabilizing the two horizontal rods by separating them at a desired interval by fixing the supporting column slidably attached between the upper and lower horizontal rods using a fixing means. It can be achieved instantly. In addition, in the telescopic work scaffold of the present invention, vertically expandable unit connectors are connected vertically and horizontally to match the size of the building at the site to form a large connector (or such large connectors are Scaffolding can be easily constructed by lifting the unit connector as it is (without forming a large connector or unit connector) using a crane or the like, and then using fixing means to stop the expansion and contraction of the large connector or unit connector. As long as it can be transported by truck, etc., the minimum unit of telescopic units can be connected at an efficient location other than the site, such as a factory, to save labor on site, and even if such connections are not made at all, Since the basic details of the telescopic unit itself are already connected without having to keep it in place, assembly work on site is much easier than with conventional technology. In addition, during disassembly work, all you have to do is release the fixing means, reduce the size, and untie the oversized large connectors to the minimum extent necessary, and then the rest can be loaded onto a truck, which can significantly reduce the number of workers and work time. .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing embodiments.

FIG. 1 is a side view showing a first embodiment of the telescopic unit of the present invention, showing the extended state. In the figure, reference numerals 10 and 10 indicate two horizontal rods arranged two-dimensionally in alignment in the vertical direction. These horizontal rods 10, 10
Support columns 20, 20 are slidably attached to each of them to constitute one telescopic unit. Specifically, in the first embodiment, one slider 30 is slidably fitted and attached to each of the horizontal rods 10, 10, while the support columns 20, 20 cross each other in the center. They are rotatably connected by a shaft 21, and both ends are rotatably attached to stators 31, respectively. Like this one horizontal rod 1
It is more preferable if both of the sliders 30 on the slider 30 are not made slidable but one is fixedly installed on the horizontal rod 10 because the fixing work at the site can be omitted accordingly. The slider 30 has small holes 3
On the other hand, stop holes (not visible in the drawing) corresponding to the small holes 32 are bored at appropriate locations on the horizontal rod 10. The support columns 20, 20 in the folded and contracted state are raised along the horizontal rods 10, 10 via the sliders 30, 30, and the small hole 32 of the slider 30 and the stop hole of the horizontal rod 10 match. The pin 15 is inserted through the pin 15 at the mating position, thus fixing the support columns 20, 20 to the horizontal rods 10, 10. In other words, the small hole 32, the stopper hole and the pin 15 together constitute a fixing means. At this time, the support columns 20, 20 intersect in an X-shape via the intersecting shaft 21, thereby vertically separating the horizontal rods 10, 10. The dimensions of this minimum unit telescopic unit when it is extended are, for example, the vertical distance between the horizontal rods 10, 10 being 2.
00 cm, and the horizontal rod 10 itself is 300 cm. 11 in FIG. 1 is a stopper. This stopper 11 also constitutes the base of a connecting rod on which a scaffold board 50, which will be described later, is placed.

FIG. 2 is a partial perspective view showing a unit assembly constructed using the telescopic unit of the first embodiment. FIG. 3 is a side view of the same embodiment, showing a state in which the folded and reduced product is lifted up by a crane and is about to be expanded. FIG. 4 is a front view of the embodiment of FIG. 2.

[0009] The above-mentioned telescopic unit is connected and expanded vertically and horizontally using the connecting means 40, thereby forming a unit intermediate body. Then, another unit intermediate is constructed in the same manner. Next, these pair of unit intermediate bodies are made to face each other in parallel and perpendicularly,
These pair of unit intermediates are separated at a certain interval (for example, 150
cm) Hold the connecting rod 41. ．． ．． are connected to each other. A scaffold board 50 is placed on the connecting rods 41 and 41 and locked between these connected unit intermediate bodies, thereby forming a scaffold. Alternatively, it may be formed by being placed on and locked onto a horizontal rod (not shown). The entire pair of unit intermediate bodies on which the scaffolding board 50 is mounted to form a scaffold will be referred to as a unit connected body.

[0010] This unit connection body is preferably formed by connecting and expanding two telescopic units on the left and right sides and about five on the top and bottom to form a unit intermediate body, and further as described above, the scaffolding board 5 is connected and expanded.
It is preferable to construct it by locking the 0 and expand it in advance to an appropriate size within a transportable range. This is because even if an unnecessary part appears in the vertical direction, this unnecessary part can be used with the upper telescopic unit folded and not unfolded, so even if it is installed extra in advance, it will not get in the way. On the other hand, although on-site connection work is easier than conventional techniques, it still requires manpower and results in a loss of time.

As shown in FIG. 2, the unit intermediate body has a slider 30 fitted into one horizontal rod 10, and one of the sliders 30 supports the support columns above and below the horizontal rod 10. The upper and lower end portions 20, 20 are configured to be rotatably locked at the same time. With such a configuration, when the upper part of the unit connection body is lifted by a crane or the like, the entire unit connection body is expanded at the same time. However, depending on the size of the connected unit body (or a large connected body in which each unit connected body is further connected), unnecessary parts may occur, so in order to prevent such unnecessary parts from expanding,
The slider 30 needs to be configured to be used only on one side of the horizontal rod 10 in the vertical direction (not shown).

[0012] Next, the following methods are available to save labor and shorten the time required to construct scaffolding at a construction site. In other words, by some means (not shown), an expandable body configured to be able to expand and contract in the vertical direction is stored/transported in a reduced state, and upon arrival at the construction site, it is lowered to the desired location for construction of scaffolding on the building, and lifted there. This is a method of constructing a work scaffold by stretching an extensible body and fixing the expansion and contraction of the extensible body in this stretched state.

Furthermore, there is also a method for dismantling a work scaffold, which corresponds to the above method for constructing a work scaffold. That is, by releasing the fixing means of the stretchable body that has been fixed to expand and contract, the stretchable body is made expandable and contractable again, and the stretchable body is contracted by shrinking due to its own weight. Of course, it is also possible to transport/storage in this reduced state.

[0014] In addition to the above-mentioned first embodiment, various configurations of the telescoping unit are conceivable, depending on how the support columns are attached. That is, FIG. 5 is a side view of the second embodiment, which shows a structure in which the support columns are composed of four columns connected in an X-shape in one telescopic unit in the assembled state. Alternatively, as shown in FIG. 6 or 7, the support column may be configured in a V-shape or trapezoid shape.

FIG. 8 is a side view of still another embodiment, showing three states from a contracted state to an expanded state. In other words, the support column is composed of a single I-shaped support column in the assembled state. In the case of this embodiment, when dismantling it, it is necessary to apply force to the upper or lower side of the support column after releasing the fixing means. In this respect, in other embodiments, the support column collapses under its own weight simply by releasing the fixing means, so such an applied force is not necessary.

[0016]

Effects of the Invention As already clear from the above, in the telescopic unit of the present invention, the support column slidably attached between the two upper and lower horizontal rods can be easily fixed by the fixing means, , it is possible to instantaneously space these horizontal rods at desired intervals and stabilize them. In addition, in the telescopic work scaffold of the present invention, vertically expandable unit connectors are connected vertically and horizontally to match the size of the building at the site to form a large connector (or such large connectors are This is then lifted up by a crane, etc., and then fixed using fixing means to form a large connected body (
Scaffolding can be constructed by stopping the expansion and contraction of (or unit connectors). As long as it can be transported by truck, etc., the minimum unit of telescopic units can be connected at an efficient location other than the site, such as a factory, to save labor on site, and even if such connections are not made at all, Since the basic details of the telescopic unit itself are already connected without having to keep it in place, assembly work on site is much easier than with conventional technology. In addition, during disassembly work, all you have to do is release the fixing means, reduce the size, and untie the oversized large connectors to the minimum extent necessary, and then the rest can be loaded onto a truck, which can significantly reduce the number of workers and work time. .

[0017]

[Brief explanation of the drawing]

FIG. 1 is a side view showing a first embodiment of a telescoping unit of the present invention, showing an extended state.

FIG. 2 is a partial perspective view showing a unit connection body constructed using the telescopic unit of the first embodiment.

FIG. 3 is a side view of the same embodiment, showing a state in which the folded and reduced product is lifted by a crane and is about to be expanded.

FIG. 4 is a front view of the embodiment of FIG. 2;

FIG. 5 is a side view of the second embodiment of the telescoping unit, showing a structure in which the support columns are composed of four pillars that are cross-connected in an X-shape in one telescoping unit in the assembled state.

FIG. 6 is a side view of a third embodiment of the telescoping unit, which is composed of two supporting columns arranged in a V-shape.

FIG. 7 is a side view of a fourth embodiment of the telescoping unit, showing a trapezoidal structure consisting of two pieces.

FIG. 8 is a side view of a fifth embodiment of the telescopic unit, showing each of three states from a contracted state to an extended state. In this fifth embodiment, the support column is composed of one support column in an I-shape in the assembled state.

[Explanation of symbols]

10 Horizontal rod 20 Support pillar 30 Slider 40 Connection means 50 Scaffolding board

Claims (7)

[Claims] 1. A telescoping unit comprising two horizontal rods arranged vertically, a support column slidably attached between these horizontal rods, and a fixing means for fixing the support column to the horizontal rod. 2. A telescoping unit according to claim 1, wherein said support column is rotatably connected to two sliders slidably attached to each horizontal rod. 3. The telescopic unit according to claim 1 or 2, wherein the support pillar is composed of two pillars that are cross-connected in an X-shape in an extended state. 4. The telescopic units of claim 1, claim 2, or claim 3 are connected and expanded in the vertical direction and/or the horizontal direction, thereby forming a unit intermediate body, and the unit intermediate body is Another similarly constructed unit intermediate body is made to face each other in parallel and perpendicularly, a scaffold board is locked between the pair of unit intermediate bodies to constitute a unit connection body, and one or more unit connection bodies are further connected. A telescoping work scaffold characterized by comprising a scaffold. 5. A telescoping work scaffold, characterized in that the unit connectors are expanded and connected to an appropriate size in advance. [Claim 6] A stretchable body configured to be stretchable in the vertical direction,
It is stored/transported in a reduced state, and when it arrives at the construction site, it is lowered to the desired location for construction of scaffolding of the building, and lifted there to stretch the telescopic body, and in this stretched state, the expansion and contraction of the telescopic body is fixed. How to build scaffolding. 7. A method for dismantling a work scaffold constructed by the method according to claim 6, by releasing the fixation of the expandable body.