JPH0672493B2 - Concrete form tightening method - Google Patents

Description

The present invention relates to a concrete form tightening method.

[Prior Art] Conventionally, as a concrete form fastening tool of this type
-19701 gazette, Japanese Utility Model Publication No. 53-8193, Japanese Utility Model Publication No. 49-434
No. 09 publication, Jitsuko Sho-52-28328 publication, and the like.

FIG. 5 shows a first conventional structure. The structure is such that the end screw portion 53 of the separator 52 interposed between the panel plates 51,
In this case, the male screw portion is screwed with the screw portion 55 at the front end of the rod-shaped shaft member 54, in this case, the female screw portion, and the rod-shaped shaft member 54 is arranged orthogonally between the panel plate pressing pipes 56 arranged in parallel. 54
A male screw 57 is formed on the rear part of the rod, and a pressing member 58, in this case for a round pipe, is passed through the rod-shaped shaft member 54, and the male screw 57 is formed.
A tightening nut 59 is screwed on the panel plate pressing pipe 56 via the pressing member 58 by the tightening nut 59.

As a second conventional structure, there is a structure in which a wedge member is driven into the long hole of the rod-shaped shaft member 54.

[Problems to be Solved by the Invention]

However, in the case of the above-mentioned first conventional structure, since the tightening is performed by the nut, first, the nut is screwed to the male screw and turned until the nut comes into contact with the pressing member, and then the nut is turned with a spanner or the like to press the panel through the pressing member. Since the plate holding pipe is tightened, its work efficiency is low, and it becomes difficult to turn the nut when concrete adheres to the male screw.In addition, a tool such as a spanner is required for the work, and the rod-shaped shaft member Since the washers and nuts are individually carried around, the work efficiency is further lowered and the parts management is difficult.

Further, in the case of the second conventional structure, there is a disadvantage that the work efficiency is low because the work of driving the wedge member is required.

[Means for Solving the Problems]

 The gist of the present invention will be described with reference to the accompanying drawings.

A panel plate pressing pipe 5 in which a rod-shaped shaft member 6 is connected in an extended state to a separator end portion 3 of the separator 2 which is projected outward of the panel plate 1 and the rod-shaped shaft member 6 is juxtaposed on the outer surface of the panel plate 1 in parallel. A pressing member 8 abutting on the outer surface of the panel plate pressing pipe 5 is loosely fitted to the rod-shaped shaft member 6 between the panel plate pressing pipe 5 and the rod member 6 outside the pressing member 8. The tightening member 10 for pressing the outer surface is loosely fitted, and the loosely fitted tightening member 10 is positioned between the panel plate pressing pipes 5 in the pipe length direction. A long window-shaped engagement hole 13 having a small diameter and a large diameter at the other end for engaging the rod-shaped shaft member 6 is formed, and the engagement hole is formed when the fastening member 10 is slid in the length direction of the panel plate pressing pipe 5. Small diameter part 13b on one side of 13
The stepped groove 11 with which the edge portion of the engaging member is engaged is formed on the peripheral surface of the rod-shaped shaft member 6, and this tightening member 10 is slid in the length direction of the panel plate pressing pipe 5 so that one side of the engaging hole 13 The edge of the small diameter portion 13b is engaged with the step groove, and the tightening member
A pressure contact portion 18 that can press the pressing member 8 when the 10 is rotated by approximately 90 degrees is formed, and the tightening member 10 is rotated by approximately 90 degrees in the slide engagement state, and the pressure contact portion of the tightening member 10 is rotated. 18 is pressed against the pressing member 8 and the panel plate pressing pipe 5 is clamped and pressed against the panel plate 1 via the pressing member 8, and the rotation of the tightening member 10 presses the panel plate pressing pipe 8 via the pressing member 8. The present invention relates to a concrete form tightening method characterized by releasing the tightening by tightening the pipe 5 and turning it back.

〔Example〕

1 to 4 show an embodiment of the concrete form clamp of the present invention, in which 1 is a panel plate, 2 is a separator, and the separator 2 has a separator end composed of a screw. The portion 3 is formed, and the collar 4 of the separator 2 holds a distance from the panel plate (not shown).

Reference numeral 5 denotes a panel plate pressing pipe, and the panel plate pressing pipes 5 are arranged side by side along the outer surface of the panel plate 1.

Reference numeral 6 denotes a rod-shaped shaft member, and a connecting portion 7, in this case a female screw, is formed at the front end portion of the rod-shaped shaft member 6, and the connecting portion 7 is screwed to the separator end portion 3 and the panel plate pressing pipe 5 is attached. They are arranged orthogonally between them.

Reference numeral 8 denotes a pressing member. In this case, the pressing member 8 is for a round pipe because the panel plate pressing pipe 5 has a circular cross section, and the pressing member 8 is inserted into the rod-shaped shaft member 6 at the center thereof. Holes 9 are formed.

10 is a fastening member, and the fastening member 10 is formed in a rectangular plate shape.

An annular step groove 11 is formed on the rod-shaped shaft member 6, and a rear step surface of the step groove 11 is used as a locking step surface 12, and a distance l from the locking step surface 12 to an outer surface of the panel plate 1 is a panel plate pressing member. It is determined by the outer diameter of the pipe 5, the thickness of the pressing member 8, and the like.

Further, the fastening member 10 is formed with an engagement hole 13 having a small diameter at one end and a large diameter at the other end, the engagement hole 13 having a different diameter, and the large diameter portion 13a is larger than the outer diameter of the rod-shaped shaft member 6, The small-diameter portion 13b is formed to be smaller than the outer diameter of the rod-shaped shaft member 6 and slightly larger than the outer diameter of the step groove 11, and the rod-shaped shaft member 6 is inserted into the large-diameter portion 13a thereof to form a rear end portion of the rod-shaped shaft member 6. The bulging portion 14 is formed to prevent the tightening member 10 from coming off, and the surface of the tightening member 10 facing the pressing member 8 is formed into a flat surface, and the facing surface of the locking step surface 12 has a large diameter from the small diameter portion 13b. The fastening slope 10 is formed such that the thickness of the tightening member 10 gradually decreases toward the portion 13a, and the grip 16 is formed at the end of the large diameter portion 13a of the tightening member 10. A two-sided cut surface 17 having the same width as the width of the small diameter portion 13b of the engagement hole 13 having a different-diameter long hole shape is formed at the end portion.

Further, pressure contact portions 18 are formed in a double mountain shape on opposite sides of the pressing member 8, and a middle portion of the pressing member 8 between the pressure contact portions 18 has a valley bottom surface 19 having substantially the same width as that of the tightening member 10. Has been formed.

Since this embodiment has the above structure, the connecting portion 7 of the rod-shaped shaft member 6 is screwed and connected to the separator end portion 3 of the separator 2 so that the rod-shaped shaft member 6 is arranged orthogonally between the panel plate pressing pipes 5, The pressing member 8 is attached to the panel plate pressing pipe 5.
And the tightening member 10 in the direction of hitting the root bottom surface 19 (positioned in the length direction of the panel plate pressing pipe 5) and the large diameter portion 13a of the engagement hole 13 having a different diameter elongated hole and the rod shape. The tightening member 10 is moved to the pressing member 8 side by loose fitting with the shaft member 6, and then the grip portion 16 is gripped to move the tightening member 10 in the radial direction of the rod-shaped shaft member 6 (the length of the panel plate pressing pipe 5). Direction) small diameter part
13b is pulled so as to engage with the rod-shaped shaft member 6.

At this time, in this embodiment, the locking inclined surface 15 and the locking stepped surface 12 are engaged with each other, and the pressing member 8 presses the panel plate pressing pipe 5 by the effect of the inclined surface, and the panel plate pressing pipe 5 and the panel plate 1 outer surface. It is possible to almost eliminate the gap between the two and the like (this temporarily tightened state is not shown).

When the tightening member 10 is rotated in this state, the opposite side surfaces of the tightening member 10 engage with the pressure contact portion 18 of the pressing member 8.

At this time, the pressing member 8 is pressed, the panel plate pressing pipe 5 can be tightened via the pressing member 8, and the tightening member 10 can be locked and fixed in the vicinity of the turning of the tightening member 10 by 90 degrees.

Therefore, the panel plate pressing pipe 5 can be easily tightened by the axial movement, the radial movement, and the rotation of the tightening member 10.

As another embodiment, the pressure contact portion is formed without forming the locking slope 15.
It is also possible to tighten the panel plate pressing pipe 5 only by the action of 18, and the press contact portion 18 may be formed on the tightening member 10 side or both of the tightening member 10 and the pressing member 8, or An intermediate member having a pressure contact portion 18 may be interposed between the member 10 and the pressing member 8.

Further, in this embodiment, the panel plate pressing pipe 5 having a circular cross section is used.
However, the present invention can be applied to the case where the cross section is square or triangular.

Further, since the grip portion 16 is formed on the tightening member 10, the tightening member 10 can be rotated without a tool such as a spanner, and in this embodiment, the two-sided cut surfaces 17 have different diameters and long holes. The small diameter portion 13b of the engaging hole 13 is hooked, and the rod-shaped shaft member 6 can also be rotated without a tool.

Further, in the case of this embodiment, the pressing member 8 and the tightening member 10 are prevented from coming off the rod-shaped shaft member 6 by the bulging portion 14, so that they can be carried together.

When the separator end 3 of the separator 2 is a female screw, the connecting portion 7 is a male screw.

〔The invention's effect〕

As described above, according to the present invention, the fastening member is moved in the radial direction of the rod-shaped shaft member to engage the fastening member with the step groove of the rod-shaped shaft member, and the fastening member is rotated and pressed by the fastening member. By pressing the member, the panel plate pressing pipe can be tightened by the tightening member via the pressing member, so that the panel plate pressing pipe can be easily and reliably tightened and the efficiency of the mold clamping work is improved. can do.

In particular, the present invention is not a structure in which the tightening member is simply press-fitted into the step groove to be tightened by a wedge action, but is a structure in which the pressing member is pressed into contact and tightened by rotating the tightening member approximately 90 degrees.

Therefore, when tightening by a mere wedge action, the wedge reaction (reaction force) is directly applied to this wedge (tightening member), so the concrete expansion force to the outside of the panel plate causes the wedge action to loosen. Although the tightening is easily weakened, which is very dangerous, the present invention locks the tightened state by the rotation of the tightening member, and the tightening reaction does not directly affect the releasing direction (reverse rotating direction) of the tightening member. It is a very safe concrete form tightening method that can be designed as follows.

By thus moving the tightening member, the small-diameter portion engages with the engaging groove in the stepped groove and becomes a temporarily tightened state, and by further rotating the tightening member, the tightening reaction is no longer the pulling motion of the tightening member. Since it is possible not to extend in the returning direction, it is possible to provide a very safe concrete form tightening method in which the tightened state is securely held by the lock and can be easily removed.

Therefore, the present invention realizes a structure that has both a wedge lock by a pulling operation and a lock lock by a rotating operation, and the operation can be performed by a series of simple operations, and the tightened state can be reliably locked. It will be retained, and it will be easily disengaged as described above by simply wedge locking, and tightening will not be strong only by simple rotation locking lock (If tightening is designed strongly, rotation will be difficult and unlocking will be difficult. It becomes a concrete form tightening method that solves both drawbacks.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a side sectional view after tightening, FIG. 3 is a front view before tightening, and FIG. 5 and 5 are side sectional views of the conventional structure after tightening. 1 ... Panel plate, 2 ... Separator, 3 ... Separator end part, 5 ... Panel plate pressing pipe, 6 ... Bar shaft member, 8 ... Pressing member, 10 ... Tightening member, 11 ...
Step groove, 13 ... engaging hole, 13b ... small diameter part, 18 ... pressure contact part.

Claims (1)

[Claims] 1. A rod-shaped shaft member is connected in an extended state to an end portion of a separator that projects outward from a panel plate of the separator,
The rod-shaped member is arranged orthogonally to the panel plate pressing pipe between the panel plate pressing pipes arranged side by side on the outer surface of the panel plate, and the pressing member abutting on the outer surface of the panel plate pressing pipe is attached to the rod shaft member. The fastening member that fits and presses the outer surface of the holding member is loosely fitted to the outside of the holding member, and the loosely fitted fastening member is positioned between the panel plate holding pipes in the pipe length direction. The fastening member is formed with a long window-like engagement hole with one end having a small diameter and the other end having a large diameter to engage with the rod-shaped shaft member, and the fastening member is slid in the length direction of the panel plate holding pipe. When this is done, a step groove with which the edge of the small diameter portion on one side of the engaging hole engages is formed on the peripheral surface of the rod-shaped shaft member, and this fastening member is slid in the length direction of the panel plate pressing pipe to engage. Engage the small-diameter edge on one side of the dowel hole with the step groove, When the clamping member is rotated approximately 90 degrees in the slide engagement, to form a contact portion capable of pressing the hold-down member, substantially the member tightening by the sliding engagement state
Rotate 90 degrees to press the pressure contact part of the tightening member to the pressing member, press the panel plate pressing pipe against the panel plate through the pressing member, and rotate the tightening member to move the pressing member. A method for tightening a concrete form, characterized in that the panel plate pressing pipe is tightened through and the tightening is released by rotating it back.