JPH0219263B2 - - Google Patents

Description

Detailed Description of the Invention (Object of the Invention, Field of Industrial Application) The present invention relates to a device for connecting members such as scaffolding used in construction work, which connects a vertical support and a horizontal or diagonal horizontal stay. It is useful as a connecting device for

(Prior art) Conventionally, as a device for connecting a column and a horizontal stay, Japanese Patent Laid-Open No. 51-61139 and Japanese Patent Publication No.
There is one described in Publication No. 54-36407. The former is
A socket member for inserting the wedge attached to the side stay is welded to the circumferential surface of the support. A ring-shaped flange member is welded to the circumferential surface of the support column. All of these have a socket member or flange member welded to the circumferential surface of the support column, so they can only be connected at a predetermined height position and cannot be connected at any arbitrary position. In addition, even when the horizontal stays are not connected, these socket members or flange members are attached, which sometimes obstructs work.

In order to solve the above-mentioned difficulties,
As shown in No. 1, a structure in which a socket member is removably attached to a support column has been proposed, but the structure is complicated, the manufacturing cost is high, and there are various difficulties during use.

(Objective of the Invention) The present invention has been made in view of the above-mentioned circumstances, and is capable of being easily attached to and detached from a support at a work site, and can be attached to any position, and has a simple structure and low manufacturing cost. It is an object of the present invention to provide a device for connecting members such as a scaffold that is inexpensive and has various advantages during use.

(Structure of the Invention) The flange member that is removably attached to the support column is
Two or more flat flange pieces whose one ends are connected by a pivot pin and are attached to surround a support column, the flange having a straight side on at least a part of the outer periphery of the pieces. The other ends of these flange parts are connected by a tightening means that can be opened and closed and tightened in the direction of drawing each other. An engagement hole is provided.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a cylindrical support column, and a flange member 2 is clamped onto the circumferential surface 1a of the support column 1. As shown in FIGS. The flange member 2 consists of two flat flange pieces 3 and 4, and one end of each of these flange pieces 3 and 4 is rotatably connected to each other by a rivet pin 5 that is a pivot pin. , the other ends are connected by a tightening means 6 that can be opened and closed and tightened in the direction of drawing each other to form a ring shape.

Each flange piece 3, 4 has a central portion 3, respectively.
a, 4a and end portions 3b, 3c, 4b, 4c, one flange member 3 has both end portions 3b,
3c, the central portion 3a is convex upward by half the plate thickness, and the other flange member 4
On the contrary, the central part 4a is convex downward by the same dimension with respect to both the ends 4b and 4c,
Even though both end portions 3b and 4b and 3c and 4c overlap vertically, central portions 3a and 4a
are arranged so that they are on the same plane rather than on different levels. The inner circumferential surfaces 3d, 4d of the central portions 3a, 4a have approximately the same diameter as the outer circumferential surface 1a of the support column 1, and the outer shape of the flange member 2 as a whole has a substantially regular octagonal shape. , a total of 4 engagement holes 7
... are provided every other time at positions corresponding to approximately the middle of each side 2a of the outer shape.

To explain the tightening means 6, an engagement piece 8 having a substantially L-shaped side surface extends upward from the side 2a and covers the other end 4c at the end 3c of one flange piece 3. installed. The engagement piece 8 has a horizontal portion 8a with a distal end hanging downward, and a gap is provided between the end 3c and the other end 4c in which the other end 4c can be inserted and removed.
serves as a guide when opening and closing the flange pieces 3 and 4, and also serves to regulate the position in the vertical direction when closed. Holes 9a and 9b are provided at the same position in the engagement piece 8 and the end portion 3c.
However, the end 4c has a hole 9c in the same position as the above-mentioned holes 9a and 9b when both flange pieces 3 and 4 are closed.
are provided for each. Then, the wedge 10 is fitted across these holes 9a, 9b, and 9c,
As this wedge 10 is deeply inserted from above to below, both ends 3c, 4c move in a direction that attracts each other, and the inner peripheral surfaces 3d, 4 of both flange pieces 3, 4
d strongly clamps the outer circumferential surface 1a of the support column 1. Further, a protrusion 10a is provided at the tip of the wedge 10 by welding or the like after it is inserted into the hole 9a, and cannot be removed upwardly from the hole 9a due to the protrusion 10a. 10 heads 1
The hole 0b is larger than the hole 9a and cannot be removed downward. The other holes 9b and 9c are larger than the hole 9a, and the wedge 10 can be inserted and removed. Therefore, when the wedge 10 is pulled up to a position where the protrusion 10a contacts the engagement piece 8, the engagement between the ends 3c and 4c is released and the wedge 10 can be opened as shown by the dashed-dotted line in FIG.

3 to 5 show a state in which the support column 1 and the horizontal stay 11 are connected using the flange member 2, and the horizontal stay 11 has a connection portion at both ends of the tube member 12 that is approximately U-shaped in side view. 13 is fixed. Rectangular through holes 15, 15 are provided in the middle of both side plate portions 14, 14 of the connecting portion 13 for inserting a wedge, which will be described later. The length from the inner surface 16a of the center plate part 16 connecting the side plate parts 14, 14 to the tip part 14a of the side plate part 14 is from each side part 2a of the flange member 2. The length is approximately the same as the length up to the outer circumferential surface 1a of the support column 1. This connecting portion 13 is fitted over the flange member 2, and in this state, a wedge 17 is inserted across the respective through holes 15, 15 and the engagement hole 7. As is clear from FIG. 5, the through hole 15 of the side plate part 14 is
The engagement hole 7 of the flange member 2 comes into contact with the wedge 17 on the side closer to the edge 2a, and the engagement hole 7 of the flange member 2 comes into contact with the wedge 17. is considered to be a size and position that satisfies this condition. Further, at the tip of the wedge 17, a projection 17 is press-formed after being inserted into the upper through hole 15.
a is provided, and like the wedge 10 described above, this wedge 17 cannot be removed from the upper through hole 15. Note that both ears of the upper side plate part 14 are bent downward, thereby maintaining a distance from the flange member 2, so that the mounting posture is stable.

Since the flange member 2 and the connecting portion 13 are drawn toward each other by the wedge 17, the tip portion 14a and the outer circumferential surface 1a of the support 1, and the inner surface 16a and the side portion 2a are in contact with each other or in a state close to contact with each other. Become. That is, if the dimensional accuracy of the flange member 2 and the connecting part 13 is high, they will come into contact at the same time, and if the dimensional accuracy is low, they will come into contact after some distortion occurs in each part, or they will come into contact with a very small gap. Therefore, rotation in the vertical plane of the horizontal stay 11 is restricted by the contact between the column 1 and the tip 14a, and rotation in the horizontal plane is restricted by the contact between the side portion 2a and the inner surface 16a. It is regulated by the contact between the two. Therefore, no matter which direction the horizontal stay 11 attempts to rotate, a strong fixing force is applied to prevent it from rotating, so this connecting portion can be said to have rigid joint properties.

FIG. 6 shows another embodiment of the horizontal stay 18, in which wedge members 20 are fixed to both ends of a pipe member 19, and the wedge members 20 are inserted into the engagement hole 7 of the flange member 2. It is designed to be connected by fitting it into the

FIG. 7 shows another embodiment of the tightening means 6a, in which the flange member 21 has two flange pieces 2 rotatably connected by a rivet pin 5.
2, 23, and these end portions 22a, 23
The bolts 2 a extend across blocks 24 a and 24 b with holes that face each other with a slight gap and are attached to project from the sides 21 a and 21 a.
5a and a nut 25b.

According to the embodiments described above, the flange members 2, 21
can be opened and closed by releasing the tightening means 6, 6a, and can be attached to and removed from the column 1, and can be attached to any position on the column 1. flange member 2,
21 to the support 1, insert the wedge 10 into the holes 9a, 9.
b, 9c or bolt 2
This can be done easily and reliably by tightening the nuts 5a and 25b. Since a large number of engagement holes 7 can be provided in the flange members 2, 21, a large number of horizontal stays 11, 18, etc. can be connected. Inner peripheral surface 3 of flange pieces 3, 4, 22, 23
d, 4d, 22b, and 23b are located at the same height, so they can firmly hold the support 1 without applying an unbalanced load, and the engagement holes 7 are also located at the same height, so the horizontal stay When installing 11 and 18, the heights will not be uneven. Since both flange pieces 3, 4 and 22, 23 are connected by rivet pins 5, there is no risk of them coming apart or losing parts. Wedge 10
Since the protrusion 10a prevents it from coming out of the hole 9a, there is no risk of it coming apart as described above.
The same applies to the wedge 17. Similarly to the wedge 10, it is also possible to prevent the bolt 25a and nut 25b from coming apart. For example, by welding the nut 25b to the block 24b,
A retaining ring or the like may be attached to the opposite side of the head of the bolt 25a. Since the outer shape of the flange members 2 and 21 has the side portions 2a and 21a, there is little risk of the support column 1 rolling when it is not placed upright but laid down and temporarily placed on a roof or the like. It is also possible to use the flange members 2, 21 as steps for people to put their feet on.

In the above embodiment, the flange member 2 or 21 is constituted by two flange pieces 3, 4 or 22, 23, but three or more flange pieces may be connected. For connection, the tightening means 6, 6a may be provided at two or more locations, and the number of flange pieces may be increased or decreased to accommodate struts 1 of different diameters. Inner peripheral surfaces 3d, 4 of flange pieces
Although d, 22b, and 23b are circular, three or more protrusions whose tips are arranged in a circumferential manner may be provided.

(Effect of the invention) According to the present invention, the following effects are achieved.

It can be easily attached to and detached from the support and can be attached at any position.

The flange member for connecting the horizontal stays is
Since it is only necessary to interconnect a plurality of flat flange pieces provided with engagement holes, manufacturing costs are extremely low.

An arbitrary number of through-holes can be provided in the flat plate-shaped flange piece, thereby making it possible to connect a large number of horizontal stays. A shaped flange member can be attached thereto, and an engagement hole of the required size can be formed therein.

The engagement hole provided in the flat flange piece can have various dimensions and shapes, thereby making it possible to connect horizontal stays of different shapes.

The flange member attached to the column serves as a step when the side stay is not connected, and in this case, the flat flange member is continuous across the entire outer circumference of the column, so it is safe to avoid tripping. Furthermore, since the tread surface is flat, the feet of the worker are stable, and since the tread surface is not uneven, the soles of the feet will not be in pain.

When installing a large number of columns in parallel, it is desirable to match the circumferential angular position of each column.
In this case, positioning can be easily performed by aligning the linear pieces of the flat plate-like flange members attached to each support column.

When attaching a flat flange member with multiple engagement holes to a column, the circumferential attachment angle of the flat flange member to the column must be matched, but in this case, the straight line of the flat flange member to the column must be By aligning the sides of the shape and fixing it in place, the mounting angle can be adjusted accurately.

When the column is placed horizontally, the linear side portion of the flat plate-like flange member holds the column in a stationary position and there is no risk of it rolling.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of the coupling device, FIG. 2 is a sectional view taken along the line -- in FIG.
Figure 3 is a front view showing the state in which the coupling device is used;
Fig. 4 is an enlarged plan view of the main part of Fig. 3, and Fig. 5 is an enlarged plan view of the main part of Fig. 4.
6 is a view similar to FIG. 5 showing another embodiment of the horizontal stay, and FIG. 7 is a plan view showing another embodiment of the tightening device. 1... Support column, 2, 21... Flange member, 3,
4, 22, 23... Flange piece, 5... Rivet pin, 6, 6a... Tightening means, 7... Engagement hole, 9a, 9b, 9c... Hole, 10... Wedge, 1
1, 18...Horizontal stay, 25a...Bolt (screw member), 25b...Nut (screw member).

Claims (1)

[Scope of Claims] 1. The flange member that is removably attached to the support column is two or more flat flange pieces that are connected at one end by a pivot pin and are attached so as to surround the support support. The flange part has a linear side on at least a part of the outer periphery of the flange part, and the other end of the flange part is provided with a tightening means that can be opened and closed and that can be tightened in the direction of drawing each other. A device for connecting members such as scaffolding, wherein the flange member is provided with a plurality of engagement holes for connecting horizontal stays. 2. The device for connecting members such as a scaffold according to claim 1, wherein the tightening means is a wedge passing through each hole provided in both the flange parts. 3. Claim 1, wherein the tightening means is a screw member screwed between the flange parts.
Device for connecting members such as scaffolding as described in Section 1.