JPH10252285A - Telescopic vent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To build up a telescopic vent while adjusting its height easily by inserting rectangular steel pipes with pinholes bored in the side faces, into an outer steel pipe, and inserting height adjusting pins provided at the outer steel pipe, selectively into the pinholes of the inner and outer steel pipes to select the put-in/-out length of the inner steel pipes. SOLUTION: A rectangular steel pipe 1A enclosing rectangular steel pipes 1B, 1C is installed on a fixed frame 3 by interposing stays 2, and the steel pipe 1B enclosing the steel pipe 1C is pulled up from the inside of the steel pipe 1A. Height adjusting pins provided at the steel pipe 1A are then inserted in a set of eight pinholes which are pinholes of the steel pipe 1A and pinholes of the steel pipe 1B, according to the height of a vent. Fixing by the height adjusting pins is performed in the same way between the steel pipes 1B, 1C to set the height of a support of the telescopic vent. The telescopic vent is therefore controlled in order with excellent workability, and considerable shortening of a construction period and cost reduction can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic vent that can be used as a temporary support when constructing a bridge or a building structure.

[0002]

2. Description of the Related Art As a vent as a temporary support when constructing a bridge or a building structure, a vent as shown in FIG. 7 has been generally used. The conventional type shown in FIG. 7 (A) is the most frequently used type. In order to form a vent having a side length of 2 m and a height of about 25 m, a column member or a connecting member using a truck crane or the like is used. The components are laminated while assembling the components. In FIG. 7B, the unit blocks are stacked, but the unit blocks are inserted from the bottom and stacked by hydraulic pressure, screw jack, rack and pinion or rope operation. . In the telescope type shown in FIG. 7C, unit blocks of different sizes are stacked by hydraulic pressure or rope operation. In the pantograph type shown in FIG. 7 (D), the shape of a link installed in a quadrilateral is deformed by a hydraulic operation, and a vent having a predetermined height is obtained by a pantograph function. The stepladder type shown in FIG. 7 (E) literally raises a large stepladder at a work site.

[0003]

However, in such a vent, in the conventional type shown in FIG. 7A, in order to assemble a large number of components such as column members and connecting members on site,
It takes time to build and dismantle (1.0-1.
5 Artificial) In addition, since several sets of parts were required, it was complicated and the transportability of the parts was poor. In addition, FIG.
In the case of (E), a large-capacity lifting device such as a jack, a crane, or the like is required for the vent device itself or a jack or a crane for building into a use state. In particular, in the case of FIGS. 7B and 7C, although the vent is divided for each unit block, the unit block itself is relatively heavy and a large lifting device is required for stacking. .

[0004] Therefore, the present invention solves the problems of the conventional vent, reduces the assembling work using a lifting device at a work site, and easily adjusts the height of a small lifting device. Assembling is possible, and it is lightweight and excellent in workability,
An object of the present invention is to provide a telescope type vent that can shorten the construction period and reduce costs.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a telescope type vent used as a temporary support for a bridge, a building structure, or the like, in which a plurality of sets of pin holes are formed on a side surface at predetermined intervals. Of the inner steel pipe by slidingly inserting the rectangular steel pipe into the outer steel pipe having a larger size in a slidable manner, and selectively inserting the height adjustment pins provided on the outer steel pipe into the pin holes of the inner and outer steel pipes. Is selected. Further, the present invention is characterized in that a distance piece serving also as a slide hardware is arranged between the inner and outer steel pipes in the plurality of sets of rectangular steel pipes. Further, according to the present invention, it is preferable that a stinger set is provided at each corner of the outermost peripheral steel pipe in the plurality of sets of rectangular steel pipes so that a stay can be stretched between the rectangular steel pipe and a fixed base on which the rectangular steel pipe is installed. It is a feature. Also, the present invention provides a connecting gusset at each upper corner of each of the plurality of sets of rectangular steel pipes, and a horizontal connecting member and a diagonal member between the connecting gussets of similarly configured vents which are adjacently arranged upright. A large number of vents are configured to be connectable by connecting them, and these are used as means for solving the problem.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment in which the telescopic vent of the present invention is used as a single unit. FIG. 1 (A) is a front view, and FIG. 1 (B) is FIG. It is an arrow A view of A). 2A is an enlarged view of a portion B in FIG. 1B, FIG. 2B is an enlarged sectional view of a portion D in FIG. 1A, and FIG. 2C is a portion C in FIG. 1A. It is an enlarged view. The telescopic vent of the present invention is used as a temporary support when constructing a bridge, a building structure, or the like. A plurality of sets of square steel pipes 1A having a large number of pin holes 8 formed at predetermined intervals on the side surface. , 1B and 1C are slidably inserted into the larger outer steel pipe in order, and the height adjustment pins 6 provided on the outer steel pipe are selectively inserted into the pin holes 8, 8 of the inner and outer steel pipes, thereby enabling the inner side to be inserted. The present invention is characterized in that it is configured to select the length of taking in and out of the steel pipe. FIG.
In the example illustrated in FIG. 2, three types of square steel pipes, a large-sized square steel pipe 1 </ b> A, a medium-sized square steel pipe 1 </ b> B, and a small-sized square steel pipe 1 </ b> C, are sequentially slidably inserted, and a telescopic vent alone However, the number of square steel pipes constituting the vent alone is appropriately selected.

A large number of pin holes 8 are formed at predetermined intervals on the four side surfaces of each square steel pipe, and a reinforcing plate 8A is provided around each of the pin holes 8 if necessary. If the strength is permissible, these pin holes 8 do not necessarily have to be provided on all four side surfaces of each square steel pipe. In the plurality of sets of square steel pipes 1A, 1B, and 1C, distance pieces 7, 7 serving as sliding hardware are disposed between the inner and outer steel pipes 1A and 1B and between 1B and 1C, and the inner steel pipe slides with respect to the outer steel pipe. It is configured so that the loading and unloading can be smoothly performed. In addition, the distance piece 7, 7 also serving as a slide hardware is located at the lower part 2 of the inner steel pipe.
Although it is provided on the stage, the number of stages is appropriately selected as needed. At each corner of the outermost steel pipe 1A, which is the lowermost part of the plurality of sets of square steel pipes, a stinger set 4 is installed in an appropriate form as shown in FIG. 2A, and the square steel pipe 1A is installed. The stays 2, 2,... Can be stretched between the corners of a fixed base 3 made of concrete or the like. FIG. 2 (C)
As shown in the figure, the upper end of each stay 2
As shown in FIG. 1, the lower end of each stay 2 is connected to a pin support 5 at a corner of the fixed base 3.

[0008] The telescopic vent as a single unit of the present invention thus constructed is used as follows. At the work site, the rectangular steel pipe 1A in which the rectangular steel pipes 1B and 1C are sequentially stored is erected on the fixed base 3 via the respective stays 2 stretched between the corners. First, a rectangular steel pipe 1B incorporating a rectangular steel pipe 1C inside a rectangular steel pipe 1A is pulled up by a lifting device such as a truck crane, and is a cross-sectional enlarged view of a D part in FIG.
As shown in (B), a set of eight pin holes, the pin holes 8 of the square steel pipe 1A and the pin holes 8 of the square steel pipe 1B, which are selectively selected according to the required height of the vent. (2 for each surface
(In total, eight pieces), each height adjusting pin 6 provided on the square steel pipe 1A serving as the outer steel pipe is inserted. Next, although not shown, fixing between the square steel pipe 1B and the square steel pipe 1C by the similar selective selection of the pin holes 8 by the height adjustment pins 6 is performed, and the support as a support for the telescope type vent is provided. Height is set.

The height adjusting pin 6 provided on the outer steel pipe 1A
3 can be selectively inserted into the pin holes 8 of the inner steel pipe 1B and the outer steel pipe 1A, but needless to say, various other forms can be appropriately adopted. No. In the example of FIG. 3A, a locking groove 6A orthogonal to the axis is engraved on the peripheral surface of the height adjusting pin 6 installed by a chain 9 or the like on the side surface of the outer steel pipe 1A. Above the side surface, a locking plate 10 that pivots downward by its own weight and engages with the locking groove 6A of the height adjustment pin 6 is pivotally supported. Thereby, the square steel pipe 1 selectively selected according to the required height of the vent.
The height adjustment pin 6 inserted between the pin hole 8 of A and the pin hole 8 of the square steel pipe 1B can be reliably prevented from coming off. In the example of FIG. 3 (B), a locking hole 6B is drilled at right angles to the axis on a height adjustment pin 6 installed by a chain 9 or the like on the side surface of the outer steel pipe 1A, while a side surface of the outer steel pipe 1A is formed. On the side of the pin hole 8, a locking rod 1 that engages with the locking hole 6 </ b> B of the height adjusting pin 6 by urging the spring 12 downward.
1 is installed. Thereby, it is inserted between the pin hole 8 of the square steel pipe 1A and the pin hole 8 of the square steel pipe 1B which are selectively selected according to the required height of the vent similarly to the above-described example. The height adjustment pin 6 can be reliably prevented from coming off. In FIG. 1A, reference numeral 16 indicates a temporary scaffold, and reference numeral 17 indicates a ladder.
Each is attached to square steel pipe 1A using pin hole 8.

According to the telescopic vent of the present invention,
Since the square steel pipe 1B is housed inside the outer square steel pipe 1A and the square steel pipe 1C is housed inside the square steel pipe 1B, efficient transportation without occupying a large volume at the time of transportation to the work site. In addition, since the height adjusting pin as a component for fixing between the square steel pipes is provided on the square steel pipe, it can be managed without loss during transportation. Moreover, in the present invention, since the telescope type vent employs a form in which the inner rectangular steel pipe drawn out of the outer rectangular steel pipe is sequentially housed, only the sliding work of the simple and lightweight square steel pipe is performed. It occupies a large part of the process, there is little assembling work using lifting equipment at the work site, and it is possible to assemble while adjusting the height easily even with a small lifting equipment, so excellent workability, great The construction period can be shortened and the cost can be reduced. In addition, when used as a telescope-type vent alone, the vent alone is rod-shaped, and is supported at almost one point, that is, in a pin-joined form with respect to a mounted structure or the ground, so that the seat-resistant vent is provided. The bending performance is also improved.

FIGS. 4 and 5 show a second embodiment of the present invention, in which a plurality of telescope-type vents as a single unit according to the first embodiment are used. . FIG. 4A shows the telescopic vent of the first embodiment, and FIG. 4B is a front view of four telescopic vents connected together.
5 (A) is a detailed front view, FIG. 5 (B) is an upper view of FIG. 5 (A), FIG. 5 (C) is a view from arrow E of FIG. 5 (A), and FIG.
FIG. 6 is an enlarged view of a portion F in FIG. As shown in FIG. 4A, the telescopic vent 1 described in the first embodiment is set at a predetermined height and is erected on the fixed base 3, and is similarly erected. The four telescopic vents 1 are arranged in a square as shown in FIG. 4 (B), and these four telescopic vents 1, 1... Are connected by a diagonal member 14 and a horizontal connecting member 15. It is used as a vent. FIG. 4 (B)
In the example shown in FIG. 5, a temporary scaffold 16 is installed at the connection portion of each of the inner and outer square steel pipes for the connection work by inserting the height adjustment pin. The temporary scaffold 16 is made of each square steel pipe 1A, 1
It is installed and fixed using a number of pin holes 8 drilled on the side surfaces of B and 1C. When the telescope-type vents 1 and 1 are placed upright next to each other as described above, in addition to the case where the upper part thereof is supported by a pin with respect to a bridge or a building structure, FIG. As shown, a configuration supported by rollers is also employed.

As shown in FIG. 5, a plurality of sets of square steel pipes 1 are provided.
A connection gusset 13 is provided in each of the upper corners of A, 1B, and 1C in an appropriate form, and a horizontal connection is made between the connection gusset 13 of the vent 1 having the same configuration and standing adjacently. A large number of vents 1 and 1 are configured to be connectable by being connected by a member 15 and diagonal members 14 and 14. When the vents 1 and 1 are vertically arranged adjacent to each other, it is natural that the stays 2, 2... Do not need to be stretched. As shown in FIG. 5 (C), the diagonal member 14 and the horizontal connecting member 15 are divided at their respective intermediate portions, and their lengths are made variable by superimposing connection. It may be configured such that their lengths are selected according to the installation interval between them. According to the present embodiment, although a high-strength vent can be constituted by a telescope-type vent as an assembly provided in a large number of simultaneous arrangements, the telescope-type vent itself 1 itself is the first telescope-type vent alone. As described in the embodiment, since the inner rectangular steel pipes sequentially housed in the outer rectangular steel pipes can be pulled out only by a simple and light sliding work of the rectangular steel pipes, these telescopic vents are thereafter used. A simple operation of simply connecting the units 1 and 1 with a connecting material is sufficient, and the workability is excellent and the construction period can be shortened as a whole.

FIG. 6 shows a telescopic vent 1 of the present invention.
FIG. 6 is a plan view and a vertical cross-sectional view illustrating an example of the dismantling operation of FIG. The pin hole 8 of the square steel pipe 1A and the pin hole 8 of the square steel pipe 1B selectively selected according to the required height of the vent.
At this time, the height adjusting pins 6 are respectively inserted to select the length of the inner rectangular steel pipe 1B with respect to the outer rectangular steel pipe 1A, and the length of the inner rectangular steel pipe 1B is selected. When the vent 1 is disassembled, the jack mounting base 18 is previously set on the upper part of the outer square steel pipe 1A, while the upper receiving base 19 is mounted on the inner square steel pipe 1B.
Are installed, and under the condition that the jack 20 is stretched between the two gantry 18, 19, the inner and outer square steel pipes 1A,
If you pull out the height adjustment pins 6 that lock 1B,
The inner rectangular steel pipe 1B can be gradually accommodated in the outer rectangular steel pipe 1A by the jack 20 without suddenly dropping.

In the embodiment described with reference to the drawings and the like, a number of pin holes into which height adjusting pins are inserted are formed in the outermost rectangular steel pipe, and are housed inside by these pin holes. The inner steel pipe is adjusted to take in and out length, but it is fixed to the upper part of the steel pipe located outside by forming many pin holes in the innermost square steel pipe. A temporary scaffold for temporary construction can also be installed, which is convenient for work. In addition, the outermost square steel pipe is preferably used in the longest state (total length) from the viewpoint of the solution in terms of strength. As described above, where the insertion and removal length of the inner steel pipe is performed may be appropriately selected, and a number of level positions can be obtained.

The embodiments of the present invention have been described above. However, within the scope of the present invention, the shape of the square steel pipe, the number of steps to be assembled, the cross-sectional shape, the shape, the number, the interval, and the height of the pin holes are provided. The shape of the adjustment pin and its installation form on the square steel pipe, the form of fixing the height adjustment pin to the square steel pipe, the shape of the stayer set and its installation form on the square steel pipe, the staying extension form, the shape of the connection gusset and its shape About the installation form to the square steel pipe, the shape of the diagonal material and the horizontal connecting material and the connection form to the connection gusset, the shape and the arrangement form of the distance piece, the connection arrangement shape as the aggregate of the telescope type vent alone, etc. It can be adopted as appropriate.

[0016]

As described above in detail, according to the present invention, the inner rectangular steel pipe having a smaller size is housed inside the outer rectangular steel pipe, so that it can be transported to the work site. Can be transported efficiently without occupying a large volume, and the height adjustment pins for fixing between the square steel pipes are installed on the square steel pipes as parts so that they are not lost during transport. It can be managed in an orderly manner. And as a telescope type vent,
Since the inner rectangular steel pipes are sequentially drawn out of the outer rectangular steel pipes, the slide operation of the simple and lightweight rectangular steel pipes alone occupies most of the work process. Since the assembling work by the heavy equipment is small and the assembling can be performed while adjusting the height easily even with a small lifting equipment, the workability is excellent, and the construction period is significantly shortened and the cost is reduced. In addition, when used as a telescope type vent alone, the vent alone is in a rod state,
Since it is supported on a structure to be mounted or on the ground substantially at one point, ie, in the form of a pin joint, buckling resistance is also improved. In addition, by providing connection gussets at the upper corners of each of the plurality of sets of square steel pipes, horizontal connection members and diagonal members can be provided between the connection gussets of similarly configured vents that are adjacently arranged upright. By connecting the vents, a large number of vents can be configured to be connectable. Moreover, despite the fact that a high-strength vent can be formed by a telescope-type vent as an aggregate installed in a large number of simultaneous installations, the telescope-type vent itself is,
Since only the simple and light sliding work of the rectangular steel pipe can be performed by pulling out the inner rectangular steel pipe sequentially housed inside the outer rectangular steel pipe, these telescope type vents are connected with a connecting material. With a simple operation, it is possible to provide a telescope type vent having excellent workability and greatly shortening the construction period as a whole.

[Brief description of the drawings]

1A and 1B show a first embodiment in which a telescope type vent of the present invention is used as a single unit. FIG. 1A is a front view, and FIG. 1B is an arrow A in FIG. 1A. FIG.

FIGS. 2A and 2B show a main part of the telescopic vent according to the first embodiment of the present invention. FIG. 2A is an enlarged view of a portion B in FIG. 1B, and FIG. 1 (A) is an enlarged cross-sectional view of a part D,
FIG. 2C is an enlarged view of a portion C in FIG.

FIG. 3 is a perspective view of an essential part showing an example of a mode of fixing a height adjusting pin to a square steel pipe in the telescopic vent according to the first embodiment of the present invention.

FIG. 4 shows a second embodiment of the present invention, and is a front view of an example in which a plurality of telescopic vents as a single unit are used by being connected.

FIG. 5 shows a second embodiment of the present invention.
5 (A) is a detailed front view, FIG. 5 (B) is an upper view of FIG. 5 (A), FIG. 5 (C) is a view on arrow E of FIG. 5 (A), and FIG. 5 (D) is FIG. FIG.

6A and 6B are a plan view and a vertical sectional view illustrating an example of dismantling work of the telescope type vent 1 of the present invention.

FIG. 7 is a diagram illustrating various conventional vents.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Vent (unit) 1A ... Square steel pipe (large) 1B ... Square steel pipe (medium) 1C ... Square steel pipe (small) 2 ... Stay 3 ... Fixed stand 4 ... Steger set 5 Pin support 6 Height adjusting pin 6A Lock groove 6B Lock hole 7 Distance piece 8 Pin hole 8A Reinforcement plate 9 ... Chain 10 ... Locking plate 11 ... Locking rod 12 ... Spring 13 ... Connection gusset 14 ... Diagonal material 15 ... Horizontal connecting material 16 ... Temporary scaffold 17 ... Ladders 18 ... Jack mounting stand 19 ... Top receiving stand 20 ... Jack

Claims (4)

[Claims] 1. A plurality of sets of rectangular steel pipes having a plurality of pin holes formed at predetermined intervals on a side surface are sequentially slidably inserted into a large-sized outer steel pipe, and a height provided on the outer steel pipe is provided. A telescope type vent used as a temporary support for a building structure or the like, wherein an adjusting pin is selectively inserted into a pin hole of an inner and outer steel pipe to select a length of the inner steel pipe. 2. A temporary support for a building structure or the like according to claim 1, wherein a distance piece serving also as a slide hardware is disposed between the inner and outer steel pipes in the plurality of sets of rectangular steel pipes. Telescope type vent. 3. A structure in which a stager set is provided at each corner of the outermost peripheral steel pipe in the plurality of sets of rectangular steel pipes so that a stay can be stretched between a fixed base on which the rectangular steel pipe is installed. A telescope type vent used as a temporary support for the building structure or the like according to claim 1 or 2. 4. A connecting gusset is provided at each upper corner of each of the plurality of sets of rectangular steel pipes, and a horizontal connecting member and a diagonal member are connected between adjacent connecting gussets of similarly configured vents. The telescopic vent used as a temporary support for a building structure or the like according to any one of claims 1 to 3, wherein a large number of vents can be connected by connecting the vents.