JPS6139802Y2 - - Google Patents

Description

[Detailed explanation of the idea] When building a concrete retaining wall or building a basement for a concrete building, etc. (1) When removing separators from bedrock or existing concrete wall members.

(2) When removing separators from H steel piles, sheet piles, sheet piles, etc.

(3) When the steel frame of a column is out of alignment and the separator is removed.

(4) When the structure has a tapered structure and the separators have different lengths.

(5) When determining the separator position later and measuring the wall thickness one by one.

When operating, the concrete wall thickness is not constant and the length of the separator becomes uneven.

Therefore, in assembling concrete formwork in the above-mentioned case, the present invention creates a concrete formwork tightening rod that screws into the screws of the separator to tighten and fix the weir plate by pressing the pipe. The screw hole at the base of the tightening rod is screwed into the tip of the screw of the separator with a weir plate support that protrudes from the weir plate, and the protruding part of the screw of the separator is thrust into the hole of the tightening rod to tighten the weir of the separator. A concrete formwork in which a weir plate is held between a plate support and a collar at the base end of a tightening rod, and the weir plate is pressed and fixed to the weir plate by a retaining washer and a nut attached to the screw at the tip of the tightening rod. This relates to a tightening device.

To explain the structure of one embodiment of the present invention shown in Figs. 1 to 4, 1 is a pipe-type concrete form clamping rod, and the base of the pipe is compressed by pressure forming to have a small diameter 2. At the same time, a collar 3 is integrally formed at the base end by header processing, a screw 4 is installed on the outer periphery of the tip end of the pipe, and a screw hole 5 is installed in the small diameter section 2.
are installed respectively to constitute the tightening rod 1. 6 is a separator, and screws 7 and 8 are provided on both sides. 9
is a conical weir plate support, and the threaded hole in the center cylinder 10 is screwed into the long screw 8 on the other side of the separator 6. Reference numerals 11 and 12 are presser washers and nuts that are attached to the screw end 4 of the tightening rod 1.

13 denotes an anchor, and 13 is an expandable outer cylinder of anchor a, with several tapered circumferential grooves 14 arranged in parallel on the outer periphery of the base side, and several grooves 15 in the axial direction as appropriate. A screw hole 16 is formed at the distal end of the center hole at intervals. 17 is a conical wedge inserted into the base of the outer cylinder 13.

A is bedrock, existing concrete walls, etc. components, B
is a concrete formwork weir plate, and through holes 18 are bored at appropriate locations. C is the vertical flap of the round pipe placed on the outer surface of the weir plate B, and D and D are the horizontal flaps of the round pipe that are combined on the outside of the vertical flap C, and are shown in parallel with a small gap formed. If not, tighten and fix the appropriate points using the connecting fittings.

Next, its effect will be explained. Attach the outer cylinder 13 of anchor a to an appropriate location on member A such as bedrock or concrete wall.
Sequentially drill anchor mounting holes of slightly larger diameter and appropriate depth, and then insert the anchor a formed by inserting the wedge 17 into the base of the outer cylinder 13 into the mounting hole. When the protruding tip of the member A is struck, the wedge 17 enters the base of the outer cylinder 13 as shown in FIG. is fixed to member A.

Therefore, after attaching the separators 6 to the anchors a by appropriately screwing the screws 7 on the first side of the separators 6 into the threaded holes 16 of the outer cylinders 13 of a large number of anchors a, the supports 9 of each separator 6 are rotated. Move it along the screws 8 to match the mounting positions of all the supports 9 to the dimensions of the frame.

When the protruding part of the screw 8 on the other side of the separator 6 is inserted into the through hole 18 of the weir plate B and the threaded hole 5 of the tightening rod 1 is screwed into the screw 8, the screw 8 is sequentially inserted into the tightening rod. The clamping rod 1 is screwed in while protruding into the hole 1, and the weir plate B is sandwiched and supported by the support 9 and the collar of the clamping rod 1 via the separator 6. After that, apply a vertical flap C to the outer surface of the weir plate B, and fit the gap between the horizontal flaps D and D to the tightening rod 1 to form the horizontal flaps D and D.
When the washer 11 is placed on the screw 4 of the tightening rod 1 and the nut 12 is screwed in, the support 9 and the washer 11 tighten and fix the weir plate B, vertical and horizontal flaps C and D, D together. At the same time, a formwork is constructed by maintaining a predetermined distance between member A and weir plate B.

Next, concrete is poured into the empty space between member A and weir plate B, and after the concrete hardens, nuts 12, washers 11, horizontal bars D, D,
Remove the vertical flap C, tightening rod 1, and weir plate B and dismantle the formwork. After that, after screwing out the support 9 and breaking off the protrusion of the separator 6 from its base end, the support 9
Fill the removed recesses with mortar to make the concrete surface flat.

Note that, instead of the anchor a, the separator 6 may be fixed to the member A via an anchor of another structure, a projection nut, a metal sheet pile, or the like.

Another embodiment of the pipe-type concrete formwork clamping rod shown in Fig. 5 has the base of the pipe processed into a header, the base being formed with a thick wall 2', the hole in the base having a small diameter, and the flange at the base end being formed into a thick wall 2'. 3, a screw 4 is installed on the outer periphery of the tip end of the pipe, and the small diameter hole at the base is made into a screw hole 5. ' can also be used in the same way as above.

Furthermore, the separator 6 may be a fully threaded separator in which threads are installed throughout.

In the present invention, the concrete formwork tightening device is configured as described above, and since the tightening rod has only a through hole and a screw hole at the base, the screw hole at the base of the tightening rod is connected to a separator. When tightening and fixing the weir plate by screwing into the tip of the screw protruding from the weir plate,
The tightening rod is screwed in while the screws of the separator are successively inserted into the holes of the tightening rod. Therefore, when removing separators from members such as bedrock or existing concrete walls, when separators have different lengths from one stage to the next in a tapered structure, or when determining the position of separators later, The thickness of the concrete wall is not constant, and the length of the separator is uneven. Measure the wall thickness one by one, adjust the position of the support screwed to the screw of the separator to the specified position, and install the weir on the support. When assembling the formwork by applying plates, there is no problem even if the protruding length of the separator screw from the weir plate is long or the protruding length is not the same. The weir plate can be easily and accurately tightened and fixed with the flange at the base end of the separator, making it easy to work, and the weir plate can be reliably supported for accurate construction. The formwork can be assembled with confidence without the need to use it, and it is easy to handle and improves work efficiency.

Furthermore, since the tightening rod is a pipe, it is strong even when made from thin-walled pipe, and the tightening rod can be made light and strong, and the flange at the base end of the tightening rod can be integrated by pressure forming. Since it is formed into a shape, it can be easily constructed and manufactured at low cost, and the flange is strong.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of a pipe type concrete form clamping rod used in a concrete form clamping device according to an embodiment of the present invention, Fig. 2 is a side view thereof, and Fig. 3 is the same pipe type concrete mold as above. Front sectional view of concrete formwork assembled using frame tightening rods,
FIG. 4 is a plan view of the tightening member, and FIG. 5 is a partially cutaway front view of a pipe-type concrete formwork tightening rod according to another embodiment of the present invention. 4...Screw, 5...Screw hole, 6...Separator, 8...Screw.

Claims (1)

[Scope of utility model registration request] The base of the pipe is press-formed to make the base a small diameter, and a collar is integrally formed at the base end, and a screw is installed on the outer periphery of the tip of the pipe and a screw hole is installed inside the small diameter part of the base for tightening. A weir plate support is screwed onto the middle part of the screw of the separator, and the tip of the screw is inserted into the through hole of the weir plate, and the protruding part of the screw is inserted into the screw hole at the base of the tightening rod. This concrete formwork tightening device is made by screwing together, placing a flap on the outside of the weir plate, fitting a presser washer to the screw of the tightening rod, and screwing a nut.