JPH0642167A - Member connecting device for scaffold and the like - Google Patents

Abstract

PURPOSE:To easily perform fitting/removal of a horizontal stay by moving the horizontal stay from the direction where a supporting part side is positioned in the horizontal direction. CONSTITUTION:A connection part 6 whose side face is of nearly a U-shape is fixed to each of both ends of a horizontal stay 2 and the horizontal stay 2 is positioned on a diametral direction line passing the center of a cross section of a support 3. An imaginary line passing the center of the cross section of the support 3 and parallel to an axis of the horizontal stay 2 is adopted as a reference line A. In the connection part 6, a support part 10 deflected to one side of a boundary in the vicinity of the reference line A and abutting on the support 3 is formed. At both ends of the horizontal stay 2, the connection parts 6 are equipped in such a manner that the support parts 10 thereof are positioned in the opposite directions of the border in the vicinity of the reference line A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member connecting device such as a temporary scaffold used for construction. INDUSTRIAL APPLICABILITY The present invention is useful as a connecting device for connecting a column provided in the vertical direction and a horizontal stay in the horizontal direction.

[0002]

2. Description of the Related Art Conventionally, as a device for connecting a support pillar of a scaffold having a cylindrical support body and a lateral stay, there is one disclosed in Japanese Patent Publication No. 54-36407.

In this, a flange-shaped flange member is welded to the main body of the pillar, and a side-surface substantially U-shaped connecting portion that is fitted over the flange member is fixed to the tip of the lateral stay, and the flange member and the connecting portion are provided. A wedge is inserted and connected over the engagement hole. This has a strong fixing force to prevent the rotating force of the lateral stay in the vertical plane, but a weak fixing force to prevent the rotating force in the horizontal plane. That is, it is that the rotational force in the horizontal plane is
It is the frictional force of the abutting portions of the wedge and the engaging hole portion, and the outer peripheral surface of the column main body and the tip of the connecting portion, which does not effectively act on the above-mentioned rotational force. In this sense, since this connecting portion can be said to have a syllable property, it has a drawback that a large number of lateral stays and braces are required to strengthen the scaffold. Therefore,
Assembling the one-sided scaffold by this conventional coupling device,
The one-sided scaffold fluctuates in a direction perpendicular to the vertical plane and becomes extremely unstable, so it cannot be used unless a proper stay is provided from the outside. Moreover, providing such a stay also damages other installations,
In addition, there was a problem in practical use in combination with the difficulty of the work.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the fixing force for preventing the rotational force of the horizontal stay in the horizontal plane is strong, the connecting portion has a rigid property, and the horizontal stay is strong even with a small number of horizontal stays. An object is to provide a member connecting device that can be used as a scaffold.

[0005]

According to the present invention, a pillar of a scaffold or the like is provided with a flange-shaped flange member attached to a cylindrical main body of the pillar, and a lateral stay connected to the pillar has a substantially U-shaped side surface. In the member connecting device in which the connecting part is fixed, and the connecting part is fitted over the flange member and the wedge member is inserted over the engaging holes provided in the flange member and the connecting part, respectively. The horizontal stay is arranged on the radial line passing through the center of the cross section of the column,
An imaginary line passing through the center of the cross section of the pillar and parallel to the axis of the lateral stay is set as a reference line A, and the connecting portion is biased to one side with the vicinity of the reference line A as a boundary and hits the pillar. Supporting portions are formed in contact with each other, and the connecting portions are provided at both ends of the horizontal stay so that the supporting portions are in mutually opposite directions with the vicinity of the reference line A as a boundary.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described based on embodiments with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a vertical column which is a component such as a temporary scaffold, and a plurality of these columns 1 are arranged in parallel at regular intervals. Each post 1
It is connected and supported by a horizontal stay 2 that is temporarily provided in the horizontal direction, and is assembled into a structure having the required strength, shape, and dimensions. The pillar 1 has a pillar main body 3 made of a metal circular tube, and a flange-shaped flange member 4 attached to the pillar main body 3 by welding or the like, while the lateral stay 2 is
Connection parts 6 each having a substantially U-shape in a side view are fixed to both ends of a metal pipe member 5 by welding or the like.

In FIG. 2, the center of the cross section of the column main body 3 is defined as a point P, and the tubular member 5 as the lateral stay 2 is arranged on a radial line passing through this point P, and an imaginary line parallel to the axis of the tubular member 5 is arranged. Let the line be reference line A. In this embodiment, the axis of the pipe member 5 and the reference line A coincide with each other, as is apparent from the figure. Now, the flange member 4 is provided with four engaging holes 7 for inserting a wedge 13 described later at positions equidistant from each other and at a position rotated from the reference line A by one angle B degrees. Has been. This flange member 4 is manufactured, for example, by press punching a metal plate, and
The respective flange members 4 are fixed so as to be at the same angular positions at the points.

On the other hand, the connecting portion 6, as well shown in FIG. 3, is formed in a U-shape in a side view, which is composed of upper and lower side plate portions 8 and 8 and a central plate portion 9. The side plate portion 8 is provided with the support portion 1 on one side (lower side in FIG. 2) of the reference line A.
0 is formed, and the tip of the support portion 10 is formed on an arcuate contact surface 10a having the same outer diameter as the strut body 3 and a center angle of about twice the angle B, It is in contact with the outer peripheral surface of the column main body 3. The other side of the side plate portion 8 with respect to the reference line A, that is, the side opposite to the support portion 10, is a tip portion 11a perpendicular to the reference line A, and a rounded rounded portion 1 subsequent thereto.
1b. In addition, the spacer portion 1 for separating the side plate portion 8 from the flange member 4 is provided on the upper side plate portion 8.
1c is press-molded. The side plate 8 has a reference line A
Engagement holes 12 are provided at positions biased by an angle B toward the support portion 10 side, and these engagement holes 12, 7,
A wedge 13 is inserted over 12 and driven in.

The wedges 13 strongly pull the side plate portions 8 and 8 toward the column main body 3 side, and the contact surfaces 10 of the two side plate portions 8 and 8 are strongly attracted.
The a and 10a abut on the outer peripheral surface of the column main body 3 and are firmly connected. That is, with respect to the rotational force in the vertical plane that acts on the lateral stay 2 from the outside, the upper and lower two portions of the connection portion 6 are regulated by abutting the pillar body 3 with the flange member 4 interposed therebetween, and thus the horizontal stay in the horizontal plane is suppressed. With respect to the rotational force, the contact surface 10a that is long in the horizontal direction contacts the stanchion body 3 and is regulated with an imaginary line C that connects the wedge 13 and the point P interposed therebetween. Therefore, it can be said that this connecting portion has a rigid property because a strong fixing force that prevents the horizontal stay 2 from rotating in any direction acts. Therefore, if the temporary scaffold is constructed by using the member connecting device of the above-mentioned embodiment, the scaffold can be made strong even with a small number of the lateral stays 2, and the one-side scaffold used especially in a narrow place can be made strong. Therefore, the work is remarkably easy without requiring a separate stay or the like.

In order to remove the horizontal stay 2, the wedge 13 is pulled out and the horizontal stay 2 is pulled in the horizontal direction and in the direction in which the supporting portion 10 is located, that is, as shown by the one-dot chain line in FIG. 2 can be easily removed by pulling one of the connecting portions 6 to the side of the supporting portion 10, that is, the front side, and the other connecting portion 6 to the side of the supporting portion 10, that is, the rear side, In addition, the reverse operation may be performed to attach the horizontal stay 2 and connect it to the column 1. That is, since the contact surface 10a of the connecting portion 6 is only on one side of the reference line A, even though the contact surface 10a at the tip thereof makes line contact with the outer peripheral surface of the column main body 3, the horizontal stay 2 It is possible to easily attach and detach between both ends of the column main body 3,3. Moreover, since the horizontal stay 2 is arranged on the reference line A, and the contact surface 10a and the support main body 3 are in contact with each other even near the reference line A, the attraction force in the direction of the reference line A is strong, The original function of the lateral stay 2 is not impaired.

Further, since the contact surface 10a is long in the circumferential direction,
If the plate thickness of the side plate portion 8 is also taken into consideration, it means that the plate body 3 is in surface contact, and the surface pressure acting on the column body 3 is significantly reduced. Therefore, the wall thickness of the circular pipe used for the column body 3 is reduced. Even if it is thin, it is less likely to be crushed.

Although the angle B is set to 30 degrees in the present embodiment, it is not particularly limited to this. However, it is preferable that the center angle of the contact surface 10a be about 90 degrees or less, and the angle B be about 1/2 of the angle. The supporting portion 10 has a reference line A.
The contact surface 10a may be slightly short of the reference line A or slightly beyond the reference line A. Although the tip end of the support portion 10 is the arcuate contact surface 10a, it may be a polygonal contact surface, or the contact surface 10a may be knurled or the like to be non-slip. It is also possible to provide individual protrusions and allow these protrusions to come into contact with the column main body 3. As the strut body 3, a reinforcing ring may be fitted on the outer circumference of the circular pipe, or the ring may be integrated with the flange member 4.

In this embodiment, four engaging holes 7 are provided in the flange member 4, but any number may be used. For example, the engaging holes 7 are provided at the reference line A and the target position to make eight holes, respectively.
In the same direction as the connecting portions 6 and 6 at both ends of the horizontal stay 2, the supporting portion 10
Can be provided and connected. Further, as shown in FIG. 4, the circular flange member 4a can be provided with appropriate engaging holes 7a ... Also in a shape and a positional relationship different from the engaging hole 7, and can be used for other lateral stays. . The flange member 4 may be configured to be attachable to and detachable from the column main body 3. The connecting portions 6 may be provided at both ends of the pipe member 5 so that the supporting portions 10 are in mutually opposite directions, or may be provided in the same direction as described above. However, it is also possible to provide the connecting portion 6 only at one end of the pipe member 5 and attach another continuous member to the other end. The spacer portion 11c may be provided in two or more places, or may be omitted. It is also possible to mount the pipe member 5 in a state in which its axis is displaced from the reference line A. If a suitable protrusion is formed on the lower end portion of the wedge 13 so that the wedge 13 can be inserted into and removed from the engagement hole 7 but does not come off from the upper engagement hole 12, there is no possibility of losing the wedge 13.

[0015]

According to the present invention, if a virtual line passing through the center of the cross section of the support column and parallel to the axis of the horizontal stay is taken as the reference line A, the reference line A will be present at the connecting portion of the horizontal stay. Since the support part that is biased to one side and abuts on the column is formed with the vicinity as a boundary, the horizontal stay can be easily attached and detached by moving the horizontal stay horizontally from a direction on the support part side. You can

Further, according to the present invention, as described above, the connecting portion of the horizontal stay is formed with the supporting portion which is biased to one side with the vicinity of the reference line A as a boundary and abuts against the supporting column. Even if the abutting surface of the abutting support part is taken long in the circumferential direction, it does not hinder the installation and removal of the lateral stays, so even if the lateral stays try to rotate in either direction, a strong fixing A force is exerted which allows a small number of lateral stays to form a strong scaffold.

[Brief description of drawings]

FIG. 1 is a front view showing a part of a scaffold according to an embodiment of the present invention.

FIG. 2 is a plan view of the member connecting device.

FIG. 3 is a partial cross-sectional view taken along the arrow III in FIG.

FIG. 4 is a plan view showing another embodiment of the flange member.

FIG. 5 is a diagram showing a usage state.

[Explanation of symbols]

 A ... Reference line 1 ... Strut 2 ... Lateral stay 3 ... Strut body 4, 4a ... Flange member 6 ... Connection part 7, 7a, 12 ... Engagement hole 10 ... Support part 10a ... Contact surface 13 ... Wedge

Claims (2)

[Claims] 1. A pillar for scaffolding or the like has a flange-shaped flange member attached to a cylindrical main body of the pillar, and a lateral U-shaped connecting portion is fixed to a lateral stay connected to the pillar. In the member connecting device in which the connecting portion is fitted over the flange member and a wedge is inserted over the engaging holes provided in the flange member and the connecting portion, the connecting portion passes through the center of the cross section of the column. The horizontal stay is arranged on the radial line, and an imaginary line passing through the center of the cross section of the column and parallel to the axis of the horizontal stay is used as the reference line A, and the connection portion is close to the reference line A. A support portion that is biased to one side and abuts on the column is formed with the boundary as a boundary, and connecting portions are provided at both ends of the horizontal stay so that the support portions are in opposite directions with the vicinity of the reference line A as a boundary. Is characterized by A member connecting device for scaffolding. 2. The member connecting device for a scaffold or the like according to claim 1, wherein a tip end of the support portion is formed on an abutment surface having the same shape as an outer peripheral surface of the pillar main body.