JP2997195B2 - Pipe clamp - Google Patents

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, to a pipe clamp used for connecting single pipes to each other or for connecting a single pipe to other members used for temporary construction of fences and buildings in road construction. About.

[0002]

2. Description of the Related Art Conventionally, as a clamp for a pipe as described above, a fixed hook which is pressed against one side of a metal pipe to be fastened, and an open / close hook which is rotatably provided and pressed against the other side of the metal pipe. And a bolt and a nut for fastening the hooks, and the hooks are locked to a metal tube and fastened and fixed with the bolts and nuts. It should be noted that a clamp having the same structure as this is connected to the pipe clamp to connect intersecting metal pipes or the like.

[0003]

In the conventional pipe clamp described above, the bolts and nuts must be rotated using a jig when fastening and removing the clamp, and the jig is carried at the site. In addition to the necessity, the operation of rotating the bolts and nuts is troublesome, the work is not quick, and when connecting and disconnecting a large number of pipes, it is extremely troublesome and takes a long time.

It is an object of the present invention to provide a pipe clamp in which a pipe can be fastened and released very easily and in a short time.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a fixed hook (2) for holding an 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) from the rotation center of the opening / closing side hook (8) as a boundary. ), An operation lever (13) is rotatably connected by a second support shaft (14), and an operation link (15) is rotatably connected to the fixed hook (2) by a first support shaft (12). The other end of the operation link (15) is connected 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). rotatably connected, and, by raising Fushimi of the operating lever (13), the third support shaft (16) is the first spindle (12 The opening and closing hook (8) opens and closes beyond the dead center connecting the second support shaft (14) and the second hook (14), and the fixed hook (2) is provided with means for connecting other parts. It is assumed that.

When the operation lever (13) is moved upward about the second support shaft (14) from the tightened state shown in FIGS.
The third support shaft (16) moves upward, and the opening / closing side hook (8) rotates clockwise about the support shaft (9), the clamping surface (8a) opens, and the pipe (7) is tightened. Wear is 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 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 in the counterclockwise direction in the drawing, and its holding surface (8a) is pressed against the outer peripheral surface of the pipe (7),
The tube (7) is clamped between the clamping surfaces (4a) and (8a). At this time, since the third support shaft (16) crosses a straight line connecting the first support shaft (12) and the second support shaft (14), that is, a dead center, the above-described holding state is maintained.

Therefore, by providing means for connecting other parts to the fixed hook (2) of the pipe clamp (1), other parts can be connected to the pipe (7). According to a second aspect of the present invention, the fixing hook (2) according to the first aspect is provided with means for connecting other components to the first hook.
A pipe clamp having the same structure as the above described pipe clamp is provided.

According to the present invention, the two-tube clamp has the same function as the above-described first tube clamp, and the two-tube clamp enables connection of crossed 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 mold steel such as a steel column by means for connecting other parts. It is a feature.

In the present invention, the pipe clamp performs the above-described operation. In addition, since a member to be fastened to the mold steel is provided, a scaffold constituent pipe can be attached to the steel pillar, for example, when constructing a steel structure.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention shown in the drawings will be described. 1 is a pipe clamp and 2 is a fixed side hook thereof. The fixed hook 2 is formed by integrally forming a substrate portion 3, side plates 4 and 4 bent on both sides thereof, and an upper plate 5 bent on the upper portion.

A connection hole 6 as a means for connecting other components is formed in the substrate portion 3. Inside the side plates 4, 4, clamping surfaces 4 a, which have the same arc as the outer peripheral arc of the pipe 7 to be fastened,
4a are formed. The holding surfaces 4a, 4a are substantially semicircular of the tube 7. At the front of the side plates 4, 4, attachment portions 4 b of the opening / closing side hook are formed.

Reference numeral 8 denotes an opening / closing side hook.
Are provided rotatably on the support shaft 9 at the mounting portions 4b, 4b, and a clamping surface 8a is formed below the support shaft 9 and is in contact with the outer circumferential surface of the pipe 7 to be fastened. The holding surface 8a opens and closes with the support shaft 9 as a center, facing the holding surfaces 4a, 4a of the fixed side hook 2. Further, an extension piece 8b extending upward from the support shaft 9 is formed integrally with the opening / closing side hook 8.

Reference numeral 10 denotes a support plate fixedly mounted on the fixed hook 2 and provided with a support rod 11 having a flange 11a so as to be rotatable up and down 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 rotatable up and down by a second support shaft 14. Reference numeral 15 denotes an operation link, the tip of which is 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 a rear portion of the operation link 15, and an adjust bolt 18 is screwed to the male screw 17. Adjust bolt 18
The other end of the support rod 11 is formed with a hole into which the support rod 11 is loosely fitted. The support rod 11 is removably fitted into the hole, and the other end surface of the adjustment bolt 18 is connected to the flange 11a of the support rod 11. To come into contact with.

As shown in FIG. 2, the holding surfaces 4a, 4a of the fixed hook 4 are brought into contact with the tube 7, and the operating lever 13 is moved downward to bring the holding surface 8a of the opening / closing hook 8 into a predetermined position on the tube 7. In a state where the third support shaft 16 is pressed by pressure, each of the support shafts 12, 14, 16 is positioned so as to be located at a position beyond a straight line connecting the first support shaft 12 and the second support shaft 14, that is, a dead center. The positional relationship has been set.

In FIGS. 2 and 3, reference numeral 1a denotes another pipe clamp having the same structure as the above-mentioned pipe clamp 1, and is connected to a connection pin 19 through a connection hole 6 formed in the substrate portion 3, 3 of the both pipe clamps 1, 1a. The two pipe clamps 1 and 1a are connected to each other. Regarding the other pipe clamps 1a, the same reference numerals are given to the main parts and the description is omitted.

Next, the use state of the above embodiment will be described. 1 to 3 show a clamped state of the pipe. In order to remove the pipe clamp 1 from the pipe 7 from this state, the operation end 13a of the operation lever 13 is pulled upward by hand, and the operation lever 13 is moved to the second position. It is rotated upward around the support shaft 14. Then, the third support shaft 16 moves upward, and the operation link 15 is moved to the first position.
The extension piece 8b of the opening / closing side hook 8 is pulled to the right in the drawing, and the opening / closing side hook 8 is rotated clockwise about the supporting shaft 9 so that the holding surface 8a is rotated. It opens and the fastening of the tube 7 is released.

Next, in order to fasten the pipe 7 from this released state, one side of the pipe 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 which is moving upward. 13a
Press down by hand. Thus, the opening / closing side hook 8 is closed by an operation reverse to the above-described fastening operation. At this time, when the opening / closing hook 8 clamps the pipe 7 at a predetermined pressure, the third support shaft 16 is positioned below a straight line connecting the first support shaft 12 and the second support shaft 14, that is, the dead center is set. Located beyond. Therefore, the opening and closing side hook 8 is prevented from opening, and the closed state is maintained.

Next, when the tubes 7 having different diameters are to be fastened, the adjustment bolts 18 are rotated and adjusted. That is, by rotating the adjusting bolt 18 in one direction and moving the operation link 15 to the left in the figure, the opening / closing hook 8 is rotated counterclockwise about the support shaft 9, 8 and the holding surface 4a of the fixed hook 2
And the distance between the bolt and the adjustment bolt 1
By rotating 8 to the other side, the above-mentioned facing distance becomes longer, and it is possible to cope with tubes 7 having different diameters.

When not in use, the adjustment bolt 18 can be removed from the support rod 11. 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 in an orthogonal manner,
Tubes that intersect orthogonally can be connected. Also, as shown in FIG. 1, if the connecting holes 6 are made one and the two pipe clamps 1 and 1a are connected so as to be able to rotate relative to each other with one connecting pin, they intersect non-orthogonally or parallel. The tubes can also be interconnected.

FIGS. 4 and 5 show a clamp for a steel die connected to the clamp 1 for pipes. That is, a mold steel clamp used instead of the other pipe clamp 1a without using the other pipe clamp 1a is shown.

In FIGS. 4 and 5, reference numeral 20 denotes a steel column, for example, an H-beam, which constitutes the frame of the building, and reference numeral 20a denotes a flange portion thereof. 21 is a mold steel clamp and 22 is its substrate. The substrate 22 is formed of a strip-shaped flat plate having a total length in the horizontal direction of the flange portion 20a.

A fixed hook 23 having an inverted L-shaped holding surface 23a is protruded from one surface of one end of the substrate 22, and the flange portion 20a is provided between the bent end portion 23b and the substrate 22. The ends are fitted. Further, a connecting plate 24 is fixedly provided on the other surface of one end, and a connecting hole 2
5, 26 are formed. On the tube clamp 1 side, as shown by a chain line in FIG. 1, connection holes 27 and 28 as means for connecting other parts are formed, and through these connection holes 25, 26, 27 and 28, connection pins are used. The connecting plate 24 is connected to the substrate 3 of the tube clamp 1.

A side plate 29 is fixed to the substrate 22, and a supporting plate 30 is provided at the other end thereof. Reference numeral 31 denotes an opening / closing hook, which is rotatably supported on the support plate 30 by a support shaft 32, and forms a holding portion 31b having a reverse L-shaped holding surface 31a formed at the front end thereof. The end of the flange portion 20a fits between the base plate 31c and the substrate 22.

An operation lever 33 is a means for opening and closing the opening / closing side hook 31.
The first extension piece 31d is rotatably connected to the first extension piece 31d by a fourth support shaft 34, and the tip is an operation end 33a.

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

Numeral 40 denotes an adjusting bolt screwed to the supporting plate 41 of the base plate 22.
5, and the position of the operation link 35 to the left in FIG. 4 is adjusted by adjusting the rotation of the adjustment bolt 40.

The operation of the second embodiment will be described.
When the operating end 33a of the operating lever 33 is manually pulled down in FIG. 4 from the state of FIG. 4 fastened to the H-shaped steel 20 which is a steel column, the sixth support shaft 39 moves downward, and the opening / closing side hook 3 is moved.
1 can be rotated clockwise about the support shaft 32. As a result, the opening / closing hook 31 is rotated to open the holding surface 31 a away from the flange portion 20 a 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 hook 23 is attached to one end of the flange portion 20a with the opening / closing hook 31 opened as described above. At the same time, the board 22 is brought into contact with the surface of the flange portion 20a. Next, the operation end 33a of the operation 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 hook 31 is strongly pressed against and fitted to the other end of the flange portion 20a, and the mold steel clamp 21 is attached to the flange portion 20a by both holding surfaces 23a and 31a.

When the holding surface 31a of the opening / closing side hook 31 holds the flange 20a at a predetermined pressure, the sixth
The support shaft 39 is located above a 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 opening / closing side hook 31 is maintained.

When the lateral width of the flange portion 20a is different, the adjusting bolt 40 is rotated and moved in the left-right direction in FIG. 4, so that the leading end of the adjusting bolt 40 and the leading end of the operating link 35 are engaged. This can be handled by displacing the position.

Accordingly, by providing the clamp 21 for the mold steel in the clamp 1 for the pipe, the clamp 21 for the mold steel is attached to the steel column of the building, and a temporary scaffold constituting pipe is attached to the clamp 1 for the pipe to form a scaffold. it can.

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

[0035]

According to above because it according to the present invention of claim 1 wherein the invention, the work of tightening or detaching the tube clamping against the pipe, performed by raising Fushimi operation of the operating lever, the conventional bolt and This can be performed extremely easily as compared with a method using a nut, and the speed of the operation can be increased. Further, a jig is not required.

According to the second aspect of the present invention, the two pipes can be easily connected. According to the third aspect of the present invention, for example, a scaffold forming pipe can be easily attached to a steel column during construction.

[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 connected pipe clamps of the present invention.

FIG. 3 is a plan view in FIG. 2;

FIG. 4 is a cross-sectional plan view of a mold steel clamp provided in the pipe clamp.

FIG. 5 is a perspective view of the same.

[Explanation of symbols]

 2 ... fixed side hook 7 ... tube 8 ... opening and 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 Spindle

Claims (3)

(57) [Claims] A fixed hook (2) for clamping an outer peripheral surface of a pipe (7) to be fastened and an opening / closing hook (8) are rotatably connected to each other. An extension piece (8b) on the opposite side of the holding surface (8a) from the rotation center
The operation lever (13) is rotatably connected to the extension piece (8b) by the second support shaft (14), and the operation link (15) is connected to the fixed side hook (2) by the first support shaft. The other end of the operation link (15) is connected to the operation lever (13) by the first support shaft (1).
2) and the third support shaft (1) at the intermediate portion between the second support shaft (14).
6) to be rotatably connected, and to the operation lever (1).
The electromotive Fushimi 3), the third support shaft (16) as the first support shaft (12) and the second support shaft (14) and beyond the dead point connecting the closing side hooks (8) are opened and closed And a means for connecting other parts to the fixed hook (2). 2. The fixed hook (2) according to claim 1,
A pipe clamp comprising a pipe clamp having the same structure as the pipe clamp according to claim 1, by means for connecting other parts. 3. The fixed hook (2) according to claim 1,
A pipe clamp comprising a member for fastening and fixing to a shape steel such as a steel column by means for connecting other parts.