JP2647802B2 - Scaffold pipe connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION A scaffold pipe connector according to the present invention comprises:
It is used for connecting various pipes when assembling a scaffold, and is capable of connecting pipes linearly.

[0002]

2. Description of the Related Art In various construction and civil engineering works, a scaffold for work is often made, and construction work and repair work are often performed on the scaffold. This scaffold has conventionally been assembled as follows, for example. 1. As shown in FIG. 5, a chain hanging clamp D is provided at a predetermined interval on a supporting material A such as two girder members while moving a crane C on which an operator M rides in the direction of the arrow in the figure. And suspend the chain B on each clamp D. 2. As shown in FIG. 6, a vertical member E called a parent pipe is passed through a suspended chain B, and a worker M such as a skilled technician rides on the chain B to connect adjacent vertical members E to each other. Is usually flowing through the parent pipe).

[0003] 3. As shown in FIG. 7, a cross member F called a rolling pipe is provided between the suspended vertical members E and fixed by a fixing member G such as an orthogonal clamp. 4. An auxiliary member H called a belly pipe is placed at the center of the horizontal member F, and the auxiliary member H and the horizontal member F are fixed with a fixing member G such as an orthogonal clamp. 5. As shown in FIG. 8, a scaffold J is placed on the cross member F and fixed to the cross member F by a line K.

[0004] 6. An operator M rides on the scaffold J, passes another cross member F between the vertical members E, and fixes it. The scaffold J is placed on the cross member F and fixed. This operation is repeated to assemble the suspended scaffold in a desired range. 7. As shown in FIG. 9, a handrail L is attached to the vertical member E, a fall prevention net N is provided below the hanging scaffold, and a curing sheet is put on the hanging scaffold as required.

As shown in FIG. 10, a connecting member G used for connecting the vertical members E and the horizontal members F (connecting the scaffold pipes) is provided with two clamps O by pins P in the direction of the arrow in FIG. It is connected so that it can rotate freely, and after attaching pipes to each clamp O, each bolt Q is tightened so that two pipes can be connected in an adjacent form. It is. In addition, since the clamps O are rotatable with each other, the pipes can also be connected by crossing the pipes at an arbitrary angle.

[0006]

The connecting tool G shown in FIG. 10 is conventionally required for constructing a scaffold.
This is a very good one. However, when the vertical members E are linearly connected to each other as shown in FIG. 6, for example, the connecting members G must be connected in a state where the ends of the two vertical members E to be connected overlap each other vertically. The straight members E could not be connected linearly without overlapping each other. Further, as shown in FIG. 10, since the connecting member G is always located outside the pipe, there is a problem that the connecting member G is obstructive when walking or the scaffold plate is difficult to flow.

An object of the present invention is to provide a scaffold pipe connector which can be connected linearly without overlapping pipes and does not protrude outside the connected pipes.

[0008]

According to the present invention, a scaffold pipe connecting tool according to claim 1 of the present invention comprises a half-pipe-shaped metal fittings 1, 2 and an opening 3, 4, as shown in FIG. A bolt 5 for changing the radial interval between the half-shaped metal fittings 1 and 2 is screwed into the axial center of the two half-shaped metal fittings 1 and 2 so as to face each other. Pin axial holes 10 and 11 for inserting connecting pins 8 and 9 for connecting the pipes 6 and 7 and the half-metal fittings 1 and 2 which are placed on the outer sides from the respective end portions are formed on both ends in the axial direction of 2. It is characterized by becoming.

According to a second aspect of the present invention, there is provided a scaffolding pipe connecting device, wherein the half-pipe-shaped metal fittings 1, 2 are opposed to each other with their openings 3, 4 facing each other. One, two
Bolts 5 that change the radial spacing of the half-shaped brackets 1 and 2 are screwed into the axial center portion thereof, and the axially opposite ends of the half-shaped brackets 1 and 2 are positioned from the respective end sides. Pin through holes 10 and 11 for inserting connecting pins 8 and 9 for connecting the pipes 6 and 7 and the half-shaped metal fittings 1 and 2 put on the outside thereof are formed, and one of the two pin through holes 10 and 11 is formed. The connection pin 9 is inserted into the hole 11 and connected.

According to a third aspect of the present invention, in the pipe connecting device for scaffolding, one of the pin through-holes is an elongated hole extending in the axial direction of the half-shaped metal fittings. It is characterized by the following.

[0011]

In the present invention, pipes are connected using the scaffold pipe connecting tool of the first aspect, for example, as follows. 1. As shown in FIG. 1, one end of each of the half-shaped metal fittings 1 and 2 in the axial direction is inserted into the tip of a pipe 7, and a connecting pin 9 is inserted into the pin through hole 11 of the half-shaped metal fittings 1 and 2 from outside the pipe 7. The metal fittings 1 and 2 are fixed so that they do not fall out of the pipe 7. 2. The other ends of the half-shaped brackets 1 and 2 in the axial direction are inserted into the tip of the other pipe 6, and the connecting pin 8 is passed from the outside of the pipe 6 toward the pin through hole 10 of the half-shaped brackets 1 and 2. Then, the half metal fittings 1 and 2 are prevented from falling out of the pipe 6. As a result, the two pipes 6 and 7 are connected via the half metal fittings 1 and 2. 3. By turning the bolts 5 to expand the half-shaped metal fittings 1 and 2 in the outer peripheral direction thereof and bringing the outer peripheral surfaces of the half-shaped metal fittings 1 and 2 into close contact with the inner circumferential surfaces of the pipes 6 and 7, the pipes 6 and 7 are strengthened. To be fixed.

According to the second aspect of the present invention, pipes are connected using the scaffold pipe connecting tool, for example, as follows. 1. The connecting pin 9 inserted into the pin through hole 11 is removed, and in this state, as shown in FIG. From the pin through holes 11 of the half-shaped metal fittings 1 and 2
Then, the connecting pin 9 is passed through again, and the half metal fittings 1 and 2 are fixed so as not to fall out of the pipe 7. 2. The other ends of the half-shaped brackets 1 and 2 in the axial direction are inserted into the tip of the other pipe 6, and the connecting pin 8 is passed from the outside of the pipe 6 toward the pin through hole 10 of the half-shaped brackets 1 and 2. Then, the half metal fittings 1 and 2 are prevented from falling out of the pipe 6. As a result, the two pipes 6 and 7 are connected via the half metal fittings 1 and 2. 3. By turning the bolts 5 to expand the half-shaped brackets 1 and 2 in the outer peripheral direction and bringing the outer peripheral surfaces of the half-brackets 1 and 2 into close contact with the inner peripheral surfaces of the pipes 6 and 7, the pipes 6 and 7 are firmly fixed. To be fixed.

According to a third aspect of the present invention, there is provided a scaffold pipe connector according to the third aspect of the present invention, wherein the pin through holes 1 formed in the half-shaped metal fittings 1 and 2 are provided.
One of the pin through-holes 10 of 0 and 11 is
2 is formed as a long hole in the axial direction, so that even if the connecting pins 8 and 9 are inserted into the pin through holes 10 and 11 to connect the pipes 6 and 7 at both ends thereof, the holes are formed as long holes. In the pin through hole 10, the connecting pin 8 can move along the through hole 10, and the connected pipes 6, 7 can be expanded and contracted in the axial direction. For example, this pipe connector 21 is attached to the pipe 6 (7) of the scaffold panel 20 as shown in FIG. 3, and the scaffold panel 20 is connected as shown in FIG. 3, and the pipe 6 (7) outside the curve is connected. When the portion is extended, the scaffold panel 20 can be curved as shown in FIG. However, it is better to use a pipe connecting tool 21 attached to the inside of the curve so that the pipe 6 (7) can be connected without expanding and contracting.

[0014]

Embodiment 1 FIGS. 1 and 2 show an embodiment of a scaffold pipe connector of the present invention. 1 and 2 shown in both figures are half-shaped metal fittings. As shown in FIG. 1 (b), U-shaped metal fittings 1 and 2 having different cross-sections are opened and closed with their openings 3, 4 facing each other. And the whole is like a single elongated pipe.

A nut 15 is welded to the upper half of the half-shaped brackets 1 and 2 at the center in the axial direction of the upper half-shaped bracket 1, and a bolt 5 is screwed onto the nut 15 from outside the same bracket 1. Have been combined. The tip (lower end) of the bolt 5 penetrates through the half-shaped bracket 1 so as to be able to come into contact with the inner peripheral surface of the lower half-shaped bracket 2 so that the bolt 5 protrudes below the nut 15. , The two half-shaped brackets 1, 2
Can be pushed out toward each other in the outer circumferential direction, and when the bolt 5 is rotated to retract toward the nut 15, the two half-shaped metal fittings 1 and 2 can be contracted in the inner circumferential direction. The half-shaped metal fittings 1 and 2 may have other shapes.
Any material can be used as long as it can be inserted into the inside of the pipe and can be in close contact with the inner peripheral surfaces of the pipes 6 and 7.

Pin-holes 10 and 11 are formed at both ends in the longitudinal direction of the half-shaped brackets 1 and 2, respectively. The pin through-hole 10 extends along the axial direction of the half-shaped brackets 1 and 2. It is formed in a long and narrow hole.

A connecting pin 8 inserted into the pin through hole 11
Is a so-called gravity lock connecting pin, which is configured such that a blade 16 provided at the distal end portion expands to the outer peripheral side of the pin 8 by the force of a spring (not shown). The connecting pin 8 is inserted into the insertion hole 1 formed in the pipe 6.
7, penetrate through the pin through-holes 10 of the half-shaped metal fittings 1, 2 in the pipe 6, and project from the hole 17 on the back side of the pipe 6 for attachment. When the blade 16 at the distal end completely protrudes from the hole 17 of the pipe 6, the pin 8 becomes difficult to come off thereafter. In the present invention, other connecting pins 8 may be used.

Connecting pin 9 to be inserted into pin through hole 11
Is configured so that the split pin 20 can be attached to the hole 21 at the tip end. The connecting pin 9 is inserted through an insertion hole 22 formed in the pipe 7, penetrates the pin through hole 11 of the half-shaped metal fittings 1, 2 inside the pipe 7, and the leading end thereof is connected to a hole on the back side of the pipe 7. 22 and a washer 23 is attached to the protruding tip.
When the split pin 20 is attached to the hole 21 from the outside of the washer 23, the pin 9 does not come off thereafter. It is preferable that the connecting pin 9 is always attached to the pin through hole 11 so that the half metal pieces 1 and 2 are not separated during transportation and storage. In the present invention, other connecting pins 9 may be used.

[0019]

The use of the scaffold pipe connector of the present invention has the following effects. . The two pipes 6, 7 can be connected in a truly straight line. . Connection and disconnection of pipes 6 and 7 are easy. . In particular, in the third aspect, when the panel 20 is used for the scaffold panel 20 shown in FIG. 3, the panel 20 can be curved and connected as shown in FIG.

[Brief description of the drawings]

FIG. 1A is a longitudinal sectional view showing an embodiment of a scaffold pipe connector of the present invention, and FIG. 1B is a sectional view taken along line DD of FIG. 1A.

2A is a top view of the scaffold pipe connector of the present invention, FIG. 2B is a side view of the pipe connector, and FIG. 2C is a bottom view of the pipe connector.

FIG. 3 is a perspective view showing an example of connecting a scaffold panel using the scaffold pipe connector of the present invention.

FIG. 4 is a plan view when a scaffold panel connected using the scaffold pipe connector of the present invention is curved.

FIG. 5 is an explanatory view illustrating a first stage in a conventional hanging scaffold assembling process.

FIG. 6 is an explanatory diagram illustrating a second stage in the assembly process of the pipe coupler of FIG. 5;

FIG. 7 is an explanatory view illustrating a third step in the assembly process of the pipe coupler of FIG. 5;

FIG. 8 is an explanatory diagram illustrating a fourth stage in the assembly process of the pipe coupler of FIG. 5;

FIG. 9 is an explanatory view illustrating a fifth step in the assembly process of the pipe coupler of FIG. 5;

FIG. 10 is a perspective view showing an example of a conventional scaffolding pipe connector.

[Explanation of symbols]

 1, 2 Half-shaped bracket 3, 4 Opening 5 Bolt 6, 7 Pipe 8, 9 Connecting pin 10, 11 Pin through hole

Claims (3)

(57) [Claims] A half-pipe-shaped metal fitting (1 or 2).
With their openings (3, 4) facing each other,
A bolt (5) for changing the radial spacing of the half-pieces (1, 2) is screwed into the axial center of the two half-pieces (1, 2). Pipes (6, 2) covering both ends in the axial direction of (2) from the respective ends to the outside thereof.
7) and connecting pins (8,
9) A scaffold pipe connector characterized by having pin through holes (10, 11) into which to insert 9). 2. A half-pipe-shaped metal fitting (1 or 2).
With their openings (3, 4) facing each other,
A bolt (5) for changing the radial spacing of the half-pieces (1, 2) is screwed into the axial center of the two half-pieces (1, 2). Pipes (6, 2) covering both ends in the axial direction of (2) from the respective ends to the outside thereof.
7) and connecting pins (8,
9) Pin through holes (10, 11) for inserting the same are formed,
A scaffold pipe connector characterized in that a connecting pin (9) is inserted into one of the pin through holes (11) of the two pin through holes (10, 11) and connected. 3. The pin through-hole (10) of the pin through-holes (10, 11) is a long hole that is long in the axial direction of the half-shaped bracket (1, 2). The scaffold pipe connector according to claim 1 or claim 2.