JP2001164744A - Construction method for temporary structure and joint metal fixture for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method for multi-purpose structure capable of carrying out construction even on an unleveled ground without hinderance by eliminating a jack base and, at the same time, corresponding to a curve or a curved part in plane. SOLUTION: A temorary structure has a plurality of joint sections of single pipes 1 and horizontal members 3, joint metal fixtures 2 fixed to optional positions of the single pipes 1 by arranging the joint sections toward the optional direction and the horizontal members 3 clamping the joint metal fixtures 2 in the joint sections are used to mount the joint metal fixtures 2 to the single pipes 1 erected in a parallel state, and the temporary structure arranging the single pipes 1 thereon is constructed by connecting the joint metal fixtures 2 to each other with the horizontal members 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a temporary structure for assembling scaffolds and supports for various operations using a single pipe, and a construction fitting for use in this construction.

[0002]

2. Description of the Related Art As a temporary structure using a single tube, a one-sided scaffold for a house or a shoring is known, and these are assembled by connecting single tubes erected in a parallel state with a horizontal member. .

[0003] There are two types of conventional single pipes, which are provided with joints with a horizontal member at predetermined intervals in the longitudinal direction, and those without such joints. By fastening the locking portion provided at the end of the connecting member with the connecting portion, the single pipes erected in the side-by-side state are connected to construct a one-sided scaffolding or support.

[0004] In the case of a single pipe having no joint, a steel pipe clamp is used to cross the single pipe vertically and horizontally, and the crossing portion is connected with a steel pipe clamp to construct a one-sided scaffold or a shoring. Is what you do.

[0005]

By the way, one-sided scaffolding and shoring using a single pipe are relatively low-rise, simple construction,
For example, it is used for maintenance of houses, but the surrounding ground of existing houses is often uneven, and when assembling one-sided scaffolds on such uneven land,
The vertical position of the joint between adjacent single tubes fluctuates, and the former single tube with the joint is fixed to the single tube. There is a problem that the base must be used, the number of members required for constructing the scaffold increases, and it takes time to construct and disassemble the scaffold.

In the case of a single tube without the latter joint,
Single pipes are connected vertically and horizontally by steel pipe clamps, so there is no problem of up and down when assembling one-sided scaffolding on uneven terrain, but by using single pipes for horizontal connection, linear arrangement in plane However, there are restrictions on the construction conditions, such as being unable to cope with curves and bent portions.

Therefore, an object of the present invention is to use a single pipe having no joint, without requiring a jack base.
An object of the present invention is to provide a method of constructing a temporary structure and a fitting for construction, which can be constructed on uneven terrain without any trouble and can cope with a curved or bent portion in a plane.

[0008]

Means for Solving the Problems In order to solve the above problems, the invention of claim 1 has a plurality of connecting portions of a single pipe and a horizontal member, and is provided at an arbitrary position of the single pipe. Using a connection fitting that is fixed in an arrangement in which the connecting portion faces in an arbitrary direction, and a horizontal member that is fastened at the connecting portion, the connection fitting is fixed to a single pipe that stands upright in a parallel state, and the connection fittings are connected to each other. The structure adopts a configuration in which a temporary structure in which single tubes are arranged in parallel by connecting with horizontal members.

According to a second aspect of the present invention, one end of two plates having a concave portion on the inner periphery circumscribing the single tube is pivotally connected so that the two plates can be opened and closed. A configuration is adopted in which separable fastening means are provided at the ends, and a connecting portion of a horizontal member is provided on each of the two plates.

According to a third aspect of the present invention, the plate has an inner periphery circumscribing a half circumference of the single tube, and a concave notch portion in which an opening for taking in and out of the single tube is opened in an offset manner with respect to the inner periphery is provided. This plate employs a configuration in which a plurality of joints with a horizontal member are provided.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the temporary structure comprises a plurality of single tubes 1 and a connection fitting 2 which is fixed to an arbitrary position of the single tube 1 in such a manner that a joint thereof is oriented in an arbitrary direction. And a horizontal member 3 to be fastened at the joint portion with the connecting metal fitting 2 and other members such as a bracket and a scaffold plate 4 are prepared. The single tube 1 is a straight steel pipe having no joint portion. There are two types of steel pipes, round pipes and square pipes. Connection fittings 2 attached to the single pipe 1 are prepared for round pipes and square pipes.

FIGS. 2 to 10 show different structures of the connection fittings, FIGS. 2 to 6 show a round pipe, and FIGS. 7 to 10 show a square pipe.

2 and FIG. 3 show a first embodiment of the fitting 2
Consists of two plates 7, 8 having semicircular concave notches 5, 6 on the inner circumference circumscribing the single tube 1.
A hinge 13 provided at one end of each of the plates 7 and 8 with a pin 11 so that the plates 7 and 8 can be opened and closed, and a bolt 13 pivotally secured to the other end of the plate 7 with a pin 12; On the other end of the other plate 8, a fork 14 provided so that the bolt 13 is detachably fitted, and a nut 15 screwed to the bolt 13 form separable fastening means 16. At two positions on the plate 8 and at one position on the other side, square hole-shaped connecting portions 17 for connecting to the horizontal member 3 are provided at a 90 ° arrangement interval in plan view. By fastening the combined nuts 15, the connection fitting 2 can be fixed to an arbitrary position with respect to the single pipe 1 by disposing the coupling portion 17 in a plane in an arbitrary direction.

The connection fitting 2 of the second example shown in FIG. 4 comprises two plates 7 and 8 having semicircular concave notches 5 and 6 on the inner periphery circumscribing the single pipe 1. , 8 are provided at both ends with hinges 9, 10, 18, 19, respectively, and hinges 9, 10 at one end of both plates 7, 8 are pivotally connected with pins 11 so that both plates 7, 8 can be opened and closed. ,
The hinges 18, 19 at the other ends of the plates 7, 8 are
The detachable fastening means 16 has a structure in which it is connected by a wedge 20 which can be inserted into and pulled out of a square hole provided on both hinges 18 and 19.

The two plates 7, 8 have a circular shape in which the semicircular concave notches 5, 6 are fitted to the single pipe 1 of the round pipe in a state where they are connected by the wedge 20, and Two square hole-shaped connecting portions 17 to be connected to the horizontal member 3 are provided two by two so as to be arranged at an interval of 90 ° in plan view.

The connection fitting 2 of the third example shown in FIG. 5 comprises two plates 7 and 8 having semicircular concave notches 5 and 6 on the inner periphery circumscribing the single pipe 1. , 8 are provided at both ends with hinges 9, 10, 18, 19, respectively, and hinges 9, 10 at one end of both plates 7, 8 are pivotally connected with pins 11 so that both plates 7, 8 can be opened and closed. ,
The hinges 18, 19 at the other ends of the plates 7, 8 are
The detachable fastening means 16 has a structure in which it is connected to a round hole provided in both hinges 18 and 19 by a pin 21 which can be inserted freely.

The two plates 7 and 8 are connected to each other by the pins 21 so that the semicircular concave notches 5 and 6 have a circular shape fitted to the single pipe 1 of the round pipe. Two square hole-shaped connecting portions 17 for connecting to the horizontal member 3 are provided,
They are provided so as to have an arrangement interval of 90 ° in a plane.

The connecting fitting 2 of the fourth example shown in FIG. 6 comprises a single plate 23 having a semicircular concave recess 22 on the inner periphery circumscribing the single pipe 1, and is inserted into and removed from the single pipe 1. The opening 24 to be opened is displaced with respect to the inner circumference, and the connecting portion 17 with the horizontal member 3 is formed on the plate 23 at three positions.
The recessed portion 22 has a portion 25 that protrudes in an arc shape on one side of the opening 24. The projecting portion 25 is prevented from falling off by engaging with the single tube 1.

The connection fitting 2 of the fifth example shown in FIG. 7 is for the square pipe of the above-described first example (FIGS. 2 and 3). The portions 5a and 6a are square.

The connection fitting 2 of the sixth example shown in FIG. 8 is for the square pipe of the second example (FIG. 4) described above, and has concave notches 5a on the inner circumference provided on both plates 7, 8. 6a is square.

The connection fitting 2 of the seventh example shown in FIG. 9 is for the square pipe of the above-described third example (FIG. 5). 6a is square.

The connection fitting of the eighth example shown in FIG. 10 is for the square pipe of the above-described fourth example (FIG. 6).
The recessed portion 22a on the inner periphery provided in 3 has a square shape, and the recessed portion 22a has a shape in which a portion 25a that protrudes at a right angle is provided on one side of the opening 24.

FIG. 2, FIG. 11 and FIG. 12 show the structure of connecting fittings 31 provided at both ends of a horizontal member 3 made of steel pipe having a predetermined length, and the connecting fittings 31 are fixed to the horizontal member 3 in a horizontal state. And a holder member 32 to be used.
Member 3 for fastening the connection fitting 2 and the holder member 32 in the inside
3, the holder member 32 is bent back and forth on both sides of the vertically elongated front wall 34, and the rear end is bent and coupled to a substantially semicircular side wall having the same diameter as the horizontal member 3, The rear ends of both side walls facing the end of the horizontal member 3 are welded, and the upper and lower surfaces between the both sides are openings 35 for inserting the wedge member 33.

The length of the holder member 32 in the front-rear direction is formed longer than the radial length of the portion of the connection fitting 2 at which the connecting portion 17 is provided.
A notch 36 that is fitted externally with respect to the thickness of the connection fitting 2 is provided along the horizontal direction from the distal end, and the notch 36 is formed so that the distal end wall 34 can contact the outer periphery of the single tube 1. The depth is set. If the notch 36 is externally inserted into the connection fitting 2, the holder member 32 and the horizontal member 3 are prevented from rotating.

The wedge member 33 is connected to the connecting portion 1 of the connection fitting 2.
7 and a wedge 37 to be inserted from above.
Are formed in a bifurcated manner by a horizontal portion 38 provided in the middle of the horizontal portion 38 and a rod portion 39 which hangs at a right angle from the tip of the horizontal portion 38 and fits between the outer periphery of the connection fitting 2 and the end of the horizontal member 3. The width of the wedge portion 37 decreases toward the lower end, and the front edge of the wedge portion 37 that is in contact with the inner surface of the front wall 34 of the holder member 32 is vertical, and the rear edge of the wedge portion 37 that contacts the end of the coupling portion 17 is an inclined edge. The wedge portion 37 may have a straight shape other than the lower narrow shape as shown.

Pins 40 and 41 for retaining are fixed to the upper end of the wedge portion 37 and the lower end of the rod portion 39, and the wedge portion 37 of the wedge member 33 inserted into the holder member 32 is inserted into the connecting portion 17. In this state, the upper end of the wedge portion 37 is
, And the lower end of the rod portion 39 projects downward from the lower surface of the holder member 32.

A locking step 42 is provided on the inner edge of the rod 39, and the locking step 42 is
2, the wedge portion 37 of the wedge member 33 can be held at a position where it does not interfere with the connection fitting 2 as shown in FIG. It can be inserted regardless of the wedge member 33.

When the holder member 32 is inserted into the connection fitting 2, the inner edge of the rod 39 comes into contact with the connection fitting 2, so that the locking step 42 is disengaged from the lower horizontal rail 43, and the wedge member 3 is removed.
3, the wedge portion 37 falls down by its own weight and the wedge portion 37 falls into the joint portion 17, and the wedge portion 37 fixes the connection fitting 2 and the holder member 32 with the front wall 34 pressed against the single pipe 1 as shown in FIG. Will be transformed.

Next, a method for constructing a temporary structure will be described with reference to an example of a scaffold used for maintenance of a building.

As shown in FIG. 1, a plurality of single tubes 1 are arranged in an upright state at a predetermined interval around a building A, and a connection fitting 2 is attached to each single tube 1 so as to be externally fitted. By connecting the connection fitting 2 of the pipe 1 with the horizontal member 3, the adjacent single pipe 1 is connected.
Are sequentially combined.

With respect to the single pipe 1, the connection position of the connection fitting 2 and the direction of the connecting portion can be freely set. Therefore, in the adjacent single pipe 1, the connection fitting 2 has the same height and the connecting portion 17. Are set so as to face the mating single pipe 1, and the horizontal members 3 are connected to the connecting portions 17 of the connection fittings 2 at the same height.
By connecting the connecting fittings 31 to each other, the adjacent single tubes 1 are sequentially connected in a horizontal arrangement.

Further, since the connection fitting 2 can be freely selected in the upper and lower positions with respect to the single pipe 1, when the surroundings of the building A are uneven, the connection fitting 2 is connected according to the conditions of the place where the single pipe 1 is installed. If the mounting position of the metal fitting 2 is set so that the connecting metal fittings 2 of the adjacent single pipe 1 are located on the same horizontal line, it is possible to cope with a change in the height of uneven terrain without using a jack base. .

As described above, a plurality of single tubes 1 erected in a parallel state are connected by the horizontal members 3 arranged at predetermined intervals above and below to construct a scaffold framework. The framework maintains the self-standing state by connecting appropriate positions of the building A and the single pipe 1 with a stay, and at the same time, each single pipe 1
If an existing bracket is attached to the bracket and an existing scaffold plate 4 is erected between the brackets, a one-sided scaffold can be constructed.

Here, in order to install the existing scaffolding plate 4 between the brackets, it is necessary to set the interval between the single tubes 1 at the installation pitch of the existing scaffolding plate 4. The length of the joint pitch of the single pipe 1 is set so as to coincide with the erection pitch of the scaffold plate 4.

Further, since a plurality of connecting portions 17 are provided at 90 ° in the connecting fitting 2, when connecting a plurality of single pipes 1 to one connecting fitting 2, the single pipe 1 is arranged at a right angle. Further, the connecting fitting 2 can freely set the mounting position of the round pipe with respect to the single pipe 1 and the direction of the connecting portion 17, so that the above-mentioned plane is linear as a temporary structure. Not only a single-sided scaffold but also a single-sided scaffold corresponding to a curved portion or a bent portion of the building A in a plane can be constructed.

In this case, one horizontal member 3 is attached to the connection fitting 2.
Is used as a connecting condition, and the connecting fitting 2 and the horizontal member 3 are independently connected for each single pipe 1 of the adjacent round pipes. At this time, the direction of the connecting portion 17 of the connecting fitting 2 with respect to the single pipe 1 is selected. Thus, a one-sided scaffold bent in a plane can be constructed.

In the illustrated example, the construction of a one-side scaffold is illustrated as a temporary structure. However, the single pipe 1 is connected in a frame-like arrangement using the single pipe 1, the connection fitting 2, and the horizontal member 3. Thus, a shoring can be constructed.

[0039]

As described above, according to the present invention, there are provided a plurality of connecting portions between a single pipe and a horizontal member, and the connecting portions are fixed at arbitrary positions of the single pipe in an arbitrary direction. By using a connecting metal to be connected and a horizontal member to be fastened at a joint with the connecting metal, a connecting member is attached to a single pipe standing upright in a parallel state, and the connecting pipes are connected to each other by a horizontal member so that the single pipes are arranged in parallel. Since the temporary structure is constructed, it is possible to construct on uneven terrain without any need for a jack base, and it is also possible to construct a multipurpose temporary structure that can respond to curved or bent parts in a plane. In addition, in the construction of the one-sided scaffolding and the shoring, existing pipes, brackets, and scaffolds serving as accessory parts can be used, and the effective use of materials on hand can be achieved.

[Brief description of the drawings]

FIG. 1 is a front view showing a construction state of a scaffold on one side as a temporary structure.

FIG. 2 is a plan view showing a connection state between the connection fitting of the first example and a horizontal member.

FIG. 3 is a plan view showing a connection fitting of the first example.

FIG. 4 is a plan view showing a connection fitting of a second example.

FIG. 5 is a plan view showing a connection fitting of a third example.

FIG. 6 is a plan view showing a connection fitting of a fourth example.

FIG. 7 is a plan view showing a connection fitting of a fifth example.

FIG. 8 is a plan view showing a connection fitting of a sixth example.

FIG. 9 is a plan view showing a connection fitting of a seventh example.

FIG. 10 is a plan view showing a connection fitting of the eighth example.

FIG. 11 is a longitudinal sectional view of a state before the connection of the horizontal member to the connection fitting, showing the connection fitting.

FIG. 12 is a vertical cross-sectional view showing a state in which a horizontal member is connected to a connection fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single pipe 2 Connection fitting 3 Horizontal material 4 Scaffolding plate 5 Depressed notch 6 Depressed notch 7 Plate 8 Plate 9 Hinge 10 Hinge 11 Pin 12 Pin 13 Bolt 14 Bifurcated part 15 Nut 16 Fastening means 17 Joining part 18 Hinge 19 Hinge REFERENCE SIGNS LIST 20 wedge 21 pin 22 concave notch 23 plate 24 opening 25 portion protruding in an arc shape 31 joint fitting 32 holder member

Claims (3)

[Claims] 1. A connecting fitting having a plurality of connecting portions between a single pipe and a horizontal member, wherein the connecting fitting is fixed at an arbitrary position of the single pipe so as to be oriented in an arbitrary direction, and connected to the connecting fitting. It is characterized by using a horizontal member fastened at the part, fixing the connection fitting to a single pipe standing upright in a parallel state, and connecting these connection fittings with a horizontal material to construct a temporary structure in which the single pipes are arranged in parallel. The construction method of the temporary structure. 2. One end of two plates having a concave portion on the inner periphery circumscribing a single tube is pivotally connected to open and close the two plates, and can be separated to the other ends of the two plates. A connection fitting for constructing a temporary structure, characterized in that the connection means for horizontal members is provided on each of the two plates with a simple fastening means. 3. A plate having an inner circumference circumscribing a half circumference of a single pipe, and a concave notch opening an opening for taking in and out of the single pipe in an offset manner with respect to the inner circumference. A connection fitting for constructing a temporary structure, characterized in that a plurality of connecting portions are provided.