JPH09100623A - Clamp for pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate pipe fastening and releasing work. SOLUTION: A fixing side hook 2 and an opening/closing side hook 8 are rotatably connected by a supporting shaft 9. The fixing side hook 2 is provided with an operating link 15 rotatably by a first supporting shaft 12. The opening/ closing side hook 8 is provided with an operating lever 13 rotatably by a second supporting shaft 14. Between the first and second supporting shafts 12, 14, the other end of the operating link 15 is rotatably connected to the operating lever 13 by a third supporting shaft 16. With the rise/fall of the operating lever 13, the opening/closing hook 8 is opened/closed, and the third supporting shaft goes over a dead point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe clamp, and more particularly, a pipe clamp used for connecting a single pipe to each other or for connecting a single pipe to another member used for temporary construction work of fences and buildings in road construction. Regarding

[0002]

2. Description of the Related Art Conventionally, as a pipe clamp as described above, a fixed-side hook for press-contacting one side of a metal pipe to be fastened and an open-close-side hook for rotatably mounting the hook on the other side of the metal pipe. And a bolt and nut for tightening the both hooks, and both hooks are locked to a metal pipe and fixed by tightening the bolt and the nut. A clamp having the same structure as that of the pipe clamp is connected to connect the intersecting metal pipes.

[0003]

In the above-described conventional pipe clamp, the bolts and nuts must be rotated by using a jig during fastening and removal thereof, and the jig is carried on the spot. In addition to the necessity, the operation of rotating bolts and nuts is troublesome, and the work is not quick. When connecting and disconnecting a large number of pipes, it is extremely troublesome and takes a long time.

Therefore, an object of the present invention is to provide a pipe clamp in which the fastening and releasing work of the pipe is extremely easy and can be performed in a short time.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 proposes a fixed hook (2) for holding the outer peripheral surface of a pipe (7) to be fastened and an opening / closing side. The hook (8) is rotatably connected to each other, and an extension piece (8b) is formed on the opposite side of the holding surface (8a) with the rotation center of the opening / closing hook (8) as a boundary. ) Is rotatably connected to the operation lever (13) by the second support shaft (14), and the operation link (15) is rotatably connected to the fixed side hook (2) by the first support shaft (12). , The other end of the operation link (15) with respect to the operation lever (13) by a third support shaft (16) at an intermediate portion between the first support shaft (12) and the second support shaft (14). The third support shaft (16) is rotatably connected and the third support shaft (16) of the first support shaft (12) is formed by the raised state of the operation lever (13). The opening and closing side hook (8) is opened and closed beyond a dead point connecting the second supporting shaft (14) and the fixed side hook (2) is provided with means for connecting other parts. It is what

When the operating lever (13) is moved up about the second support shaft (14) from the tightened state shown in FIGS. 1 to 3,
The third support shaft (16) moves upwards, the open / close side hook (8) rotates in the clockwise direction around the support shaft (9), the holding surface (8a) opens, and the pipe (7) is tightened. The clothes are released.

In order to fasten the pipe (7) from the above open state, the pipe (7) is brought into contact with the holding surface (4a) of the fixed side hook (2), and the operation lever (13) is moved downward in the figure. Push down.
As a result, the opening / closing side hook (8) rotates counterclockwise in the figure, and the holding surface (8a) is pressed against the outer peripheral surface of the pipe (7),
The tube (7) is clamped by both clamping surfaces (4a) and (8a). At this time, the third support shaft (16) crosses a straight line connecting the first support shaft (12) and the second support shaft (14), that is, the dead center, and thus the pinched state is maintained.

Therefore, by providing a means for connecting the other part to the fixed hook (2) of the pipe clamp (1), the other part can be connected to the pipe (7). The invention according to claim 2 is characterized in that the fixed hook (2) according to claim 1 is connected by another means.
A pipe clamp having the same structure as the described pipe clamp is provided.

In the present invention, both pipe clamps have the same function as the pipe clamp according to the first aspect of the present invention, and the pipe clamps enable the connection of intersecting or parallel pipes.

According to a third aspect of the present invention, the fixed-side hook (2) according to the first aspect is provided with a member for fastening and fixing to a shaped steel such as a steel column by means of connecting other parts. It is a feature.

In the present invention, the pipe clamp has the above-mentioned function. Further, since the member for fastening to the shape steel is provided, it is possible to attach the scaffold-constituting pipe to the steel column when the steel structure is constructed, for example.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention shown in the drawings will be described below. Reference numeral 1 is a pipe clamp, and 2 is a fixed hook thereof. The fixed hook 2 is formed by integrally forming a base plate 3, side plates 4 and 4 bent on both sides thereof, and an upper plate 5 bent on the upper side.

The board portion 3 is formed with a connecting hole 6 as a means for connecting other components. Inside the side plates 4 and 4, a clamping surface 4a having the same circular arc as the outer circumferential circular arc of the pipe 7 to be fastened,
4a are formed. The sandwiching surfaces 4a, 4a are approximately half a circle of the tube 7. Attachment parts 4b, 4b for opening and closing side hooks are formed in front of the side plates 4, 4.

Reference numeral 8 denotes an opening / closing hook, which is the fixed hook 2 described above.
Is rotatably provided on the mounting portions 4b, 4b of the support shaft 9 by a support shaft 9, and a holding surface 8a is formed at a lower portion of the support shaft 9 and is in contact with the outer peripheral circular surface of the pipe 7 to be fastened. The holding surface 8a faces the holding surfaces 4a, 4a of the fixed side hook 2 around the support shaft 9 and opens and closes. Further, the opening / closing side hook 8 is integrally formed with an extension piece 8b extending above the support shaft 9.

Reference numeral 10 denotes a support plate which is fixedly erected on the fixed side hook 2 and is provided upright. A support rod 11 having a flange 11a is provided on the support plate 11 so as to be vertically rotatable by a first support shaft 12. 1
Reference numeral 3 denotes an operation lever provided on the extension piece 8b of the opening / closing side hook so as to be vertically rotatable by the second support shaft 14. Reference numeral 15 is an operation link, the tip of which is vertically rotatably connected to the operation lever 13 by a third support shaft 16 at an intermediate position between the second support shaft 14 and the operation end 13a. . A male screw 17 is engraved on the rear portion of the operating link 15, and an adjusting bolt 18 is screwed onto the male screw 17. The adjustment bolt 18
A hole into which the support rod 11 is loosely fitted is formed at the other end of the support rod 11. The support rod 11 is removably fitted into the hole, and the other end surface of the adjusting bolt 18 is provided at the collar 11a of the support rod 11. It comes into contact with.

As shown in FIG. 2, the holding surfaces 4a, 4a of the fixed-side hook 4 are brought into contact with the pipe 7, and the operating lever 13 is moved downward so that the holding surface 8a of the opening-closing hook 8 is attached to the pipe 7 in a predetermined manner. When the third support shaft 16 is pressed by pressure, the third support shaft 16 is placed on a straight line connecting the first support shaft 12 and the second support shaft 14, that is, at a position beyond the dead point. The positional relationship is set.

In FIGS. 2 and 3, reference numeral 1a denotes another pipe clamp having the same structure as the above-mentioned pipe clamp 1, which is connected by a connecting pin 19 through a connecting hole 6 formed in the base plates 3 and 3 of the two pipe clamps 1 and 1a. Both pipe clamps 1, 1a are connected to each other. With regard to the other pipe clamp 1a, the same reference numerals are given to the main parts and the description thereof is omitted.

Next, the usage of the above embodiment will be described. The state shown in FIGS. 1 to 3 shows a state in which the pipe is fastened. From this state, in order to remove the pipe clamp 1 from the pipe 7, the operation end 13a of the operation lever 13 is manually pulled upward to move the operation lever 13 to the second position. The support shaft 14 is rotated upward. Then, the third support shaft 16 moves upward and the operation link 15 moves to the first position.
The support shaft 12 moves upward, the extension piece 8b of the open / close side hook 8 is pulled to the right in the figure, and the open / close side hook 8 rotates around the support axis 9 in the clockwise direction so that the holding surface 8a moves. The pipe 7 is opened and the fastening of the pipe 7 is released.

Next, in order to fasten the tube 7 from this released state, one side of the tube 7 is brought into contact with the holding surface 4a of the fixed side hook 2 and then the operating end of the operating lever 13 moving upward. 13a
Push down by hand. As a result, the opening / closing hook 8 is closed by the operation opposite to the above-described fastening operation. At this time, at the time when the opening / closing hook 8 holds the pipe 7 at a predetermined pressure, the third support shaft 16 is below the straight line connecting the first support shaft 12 and the second support shaft 14, that is, the dead point. Located beyond. Therefore, the opening / closing hook 8 is prevented from opening and the closed state is maintained.

Next, when the pipes 7 having different diameters are fastened, the adjusting bolt 18 is rotated and adjusted. That is, by rotating the adjusting bolt 18 in one direction to move the operating link 15 to the left in the drawing, the opening / closing side hook 8 is rotated counterclockwise about the support shaft 9 and the opening / closing side hook 8 is rotated. Holding surface 8a of 8 and holding surface 4a of fixed side hook 2
The facing distance with the unit becomes shorter, and conversely the adjustment bolt 1
By rotating 8 to the other side, the facing distance becomes longer, and it is possible to cope with tubes 7 having different diameters.

Further, the adjustment bolt 18 can be removed from the support rod 11 when not in use. In the above embodiment, since the pipe clamp 1 is provided with the pipe clamp 1a having the same structure as the pipe clamp 1 connected orthogonally to each other,
It is possible to connect mutually intersecting tubes at right angles. Also, as shown in FIG. 1, if the connecting holes 6 are made one and the connecting clamps 1 and 1a are connected to each other so as to be rotatable with one connecting pin, they intersect non-orthogonally or are parallel to each other. It is also possible to connect the tubes to each other.

FIGS. 4 and 5 show a mold steel clamp connected to the pipe clamp 1. That is, a clamp for die steel is shown which is used instead of the other clamp 1a for pipes described above.

In FIGS. 4 and 5, reference numeral 20 is a steel frame column constituting a building frame, for example, H-shaped steel, and 20a is a flange portion thereof. Reference numeral 21 is a mold steel clamp, and 22 is its substrate. The substrate 22 is formed of a strip-shaped flat plate having the entire length of the flange portion 20a in the lateral direction.

A fixed-side hook 23 having an inverted L-shaped holding surface 23a is projectingly provided on one surface of one end of the board 22, and the flange 20a of the flange 20a is provided between the tip bent portion 23b and the board 22. The ends are fitted together. Further, a connecting plate 24 is fixedly provided on the other surface at one end, and the connecting hole 2 is attached to this.
5, 26 are formed. Then, connecting holes 27, 28 as means for connecting other parts are formed on the side of the pipe clamp 1 as shown by a chain line in FIG. 1, and connecting pins are formed through the connecting holes 25, 26, 27, 28. The connecting plate 24 is connected to the base plate portion 3 of the pipe clamp 1.

A side plate 29 is fixed to the base plate 22, and a support plate 30 is projected from the other end. Reference numeral 31 denotes an opening / closing hook, which is rotatably supported on the support plate 30 by a support shaft 32. A holding portion 31b having an inverted L-shaped holding surface 31a is formed on the front end side thereof, and a front end bending portion thereof is formed. An end portion of the flange portion 20a is fitted between 31c and the substrate 22.

Reference numeral 33 denotes an operation lever which is a means for opening and closing the opening and closing hook 31, and the base end of which is the opening and closing hook 3 described above.
The first extension piece 31d is rotatably connected to the first extension piece 31d by the fourth support shaft 34, and the tip thereof is the operation end 33a.

Reference numeral 35 is an operation link, and a fifth support shaft 36 provided at one end thereof is supported by a guide plate 37 fixed to the base plate 22 so as to be rotatable and movable in the left-right direction in FIG. . This guide is provided on the operation link 35 side by the fifth support shaft 36.
Is fixed, and the fifth support shaft 36 is rotatably and slidably fitted in the groove 38 of the guide plate 37 without being disengaged. The other end of the operation link 35 is located between the fourth support shaft 34 and the operation end 33a and is rotatably connected to the operation lever 33 by a sixth support shaft 39.

Reference numeral 40 designates an adjusting bolt which is screwed into the support plate 41 of the base plate 22 and whose tip is the operation rod 3 described above.
5 is in contact with the tip of the adjusting bolt 40, and the rotational position of the adjusting bolt 40 adjusts the moving position of the operating link 35 to the left in FIG.

The operation of the second embodiment will be described.
When the operating end 33a of the operating lever 33 is manually pulled down from the state of being fastened to the H-shaped steel 20 which is a steel frame column in FIG. 4, the sixth support shaft 39 moves downward and the open / close side hook 3
1 can be rotated clockwise about the support shaft 32. Accordingly, the opening / closing hook 31 is rotated to open the holding surface 31a apart from the flange portion 20a of the H-shaped steel 20, and the opening / closing side hook 31 can be removed from the H-shaped steel 20.

Next, in order to fasten the mold steel clamp 21 to the H-shaped steel 20, the holding surface 23a of the fixed side hook 23 is attached to one end of the flange portion 20a while the opening / closing side hook 31 is opened as described above. The fitting is performed and the substrate 22 is brought into contact with the surface of the flange portion 20a. Next, the operating end 33a of the operating lever 33 is manually pushed upward in FIG. 4 to rotate the opening / closing hook 31 counterclockwise about the support shaft 32.
As a result, the holding surface 31a of the opening / closing side hook 31 is strongly pressed and fitted to the other end of the flange portion 20a, and the clamping steel for mold 21 is attached to the flange portion 20a by both holding surfaces 23a and 31a.

When the holding surface 31a of the opening / closing hook 31 holds the flange 20a at a predetermined pressure, the
The support shaft 39 is located above the straight line connecting the fourth support shaft 34 and the fifth support shaft 36, that is, beyond the dead center. Therefore, the closed state of the open / close side hook 31 is maintained.

When the lateral width of the flange portion 20a is different, the adjusting bolt 40 is rotated to move in the left-right direction in FIG. 4, and the tip of the adjusting bolt 40 and the tip of the operation link 35 are engaged with each other. This can be dealt with by changing the position.

Therefore, by equipping the pipe clamp 1 with the die-steel clamp 21, the die-steel clamp 21 is attached to a steel column of a building, and a temporary scaffold forming pipe is attached to the pipe clamp 1 to form a scaffold. it can.

The pipe clamp 1 may be provided with a member for holding a protective net for construction and protective cloth, and other necessary members.

[0035]

As described above, according to the first aspect of the present invention, the operation of tightening or removing the pipe clamp from the pipe can be performed by raising the operation lever. It is extremely easy compared to the one using a nut, the work speed can be increased, and no jig is required.

According to the second aspect of the invention, the two pipes can be easily connected. According to the invention described in claim 3, for example, at the time of construction work, the scaffolding configuration pipe can be easily attached to the steel column.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pipe clamp of the present invention.

FIG. 2 is a side view of two pipe clamps of the present invention connected to each other.

FIG. 3 is a plan view of FIG.

FIG. 4 is a plan sectional view of a mold steel clamp included in the pipe clamp.

FIG. 5 is a perspective view of the same.

[Explanation of symbols]

 2 ... Fixed side hook 7 ... Pipe 8 ... Opening / closing side hook 8a ... Clamping surface 8b ... Extension piece 9 ... Support shaft 12 ... First support shaft 13 ... Operation lever 14 ... Second support shaft 15 ... Operation link 16 ... Third Support shaft

Claims (3)

[Claims] 1. A hook (2) on the fixed side for holding the outer peripheral surface of a pipe (7) to be fastened and a hook (8) on the opening / closing side are rotatably connected to each other, and the hook (8) on the opening / closing side is An extension piece (8b) on the side opposite to the sandwiching surface (8a) with the center of rotation as a boundary
And the operation lever (13) is rotatably connected to the extension piece (8b) by the second support shaft (14), and the operation link (15) is attached to the fixed hook (2) by the first support shaft. (12) is rotatably connected, and the other end of the operation link (15) is connected to the operation lever (13) by the first support shaft (1).
2) and the second support shaft (14), the third support shaft (1
6) rotatably connected by the operation lever (1)
Due to the rising state of 3), the opening / closing side hook (8) opens and closes beyond the dead point where the third support shaft (16) connects the first support shaft (12) and the second support shaft (14). The clamp for a pipe, further comprising means for connecting other parts to the fixed hook (2). 2. The fixed hook (2) according to claim 1,
A pipe clamp having a pipe clamp having the same structure as the pipe clamp according to claim 1 by means of connecting other parts. 3. The fixed hook (2) according to claim 1,
A pipe clamp comprising a member for fastening and fixing to a shaped steel such as a steel column by means of connecting other parts.