JPH0738556Y2 - Tool for attaching and detaching mold clamps - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is a tool for attaching and detaching concrete formwork clamps,
More specifically, the present invention relates to a detachable tool for tightening and removing a frame fastening metal fitting screwed to a separator.

[Prior Art] A temporary frame for constructing a concrete structure, as shown in FIG. 4, has a separator 2 interposed between facing molds 1 and 1, and holes 3 of both molds 1 and 1 are formed. At the end of the separator 2 penetrating and projecting to the outer surface of the formwork 1, 1, the formwork fastening fitting 4,
4 are screw-connected, and the cones 5 of the separator 2 and the form fittings 4 are sandwiched between the formwork 1 and 1, with the end material 6 along the outer surface of the formwork 1 and 1, The wedges 7 driven in 4 support the molds 1 and 1 via the thick end material 6, and concrete is placed between the molds 1 and 1 held at a predetermined interval by the separator 2. There is.

When dismantling the formwork 1 and 1, the wedge 7 is pulled out to remove the thick end material 6.
To remove the formwork fastener 4 from the separator 2.

Conventionally, at the time of assembling and disassembling the temporary frame as described above, the attachment and detachment of the mold fastening fitting 4 to and from the separator 2 are all performed by manually rotating the form fastening fitting in a screwing or loosening direction. It was

[Problems to be solved by the device]

By the way, the formwork fasteners are often used in the temporary frame, and if the formwork fasteners are manually attached and detached as in the conventional case, the work efficiency is extremely poor and there is a problem of heavy labor. is there.

Further, when assembling the form, a separator is attached to one of the forms to be erected first, and when the other form is to be erected, the holes 3 provided in this form and the separator 2 must be fitted. However, the position of the end of the separator 2 and the position of the hole 3 may not be accurately aligned, and therefore, there is a problem that the work of fitting the end of the separator 2 and the hole 3 takes time and effort.

Therefore, the present invention provides a tool for attaching / detaching a formwork clamp, which enables easy and efficient work of attaching / detaching the formwork fastener and also fitting work of the end of the separator and the hole of the formwork. The challenge is to provide.

[Means for Solving the Problems]

In order to solve the above problems, the present invention is such that a tip of a shaft body is externally fitted to a mold fastening metal fitting screwed with a separator,
A tip-opening tubular body that engages with the frame fastening metal fitting in the screwdriver direction is fixed, and the tip projects forward from the tip opening of the tubular body on the outer surface of the tubular body, and the sharpened portion of the tip. This is a structure in which a separator hooking member that is bent into an arc shape and used as a toe is attached.

[Action]

Grasp the shaft with the chuck of the rotating tool, and rotate the rotating tool in the screwing direction with the cylinder fitted on the form fittings temporarily screwed to the end of the separator. Rotation is transmitted to the formwork fastener, and the formwork fastener can be screwed into the separator.

Further, when removing the form fitting, the rotary tool may be reversely driven with the tubular body fitted. Furthermore, when fitting the holes of the mold and the separator during the assembly of the temporary frame, insert the hook member from the outer surface side into the hole of the mold and rotate it so that the tip of the toe is on the end of the separator. If the hooking member is pulled out from the hole while the ends of the separator are lifted to face the hole while being engaged with each other, the end of the separator and the hole can be fitted together.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the attachment / detachment tool 11 has a cylindrical body 13 fixed to the front end of a shaft body 12 and externally fitted to the formwork fastening fitting 4, and a hooking member 14 of the separator 2 on the outer surface of the cylindrical body 13. Is formed by mounting.

The cylindrical body 13 is formed in an oval cross-sectional shape so as to be engaged with the form fitting fastening member 4 in the screwdriver direction and integrally rotate in a state of being fitted into the form fitting fastening member 4 from the opening at the tip. It is adapted to engage with the flat portion 4a of the form fitting 4 in the screwdriver direction.

Hooking member for the separator 2 attached to the outer surface of the cylindrical body 13
Reference numeral 14 has a structure in which the tip of the circular shaft portion 15 is sharpened and the sharpened portion is bent into an arc shape to form a toe 16, so that there is no hindrance to the external fitting of the tubular body 13 to the formwork fastener 4. Thus, it is fixed so as to project from the outer surface of the tubular body 13 toward the front of the tubular body 13.

Although the hooking member 14 is fixed to the outer surface of the cylindrical body 13 in the illustrated case, it can be rotated and fixed with the attachment portion to the cylindrical body 13 as a fulcrum, and when not used, the shaft 12 It may be housed toward the side so that it does not get in the way when the tube body 13 is externally fitted and inserted into the form fitting fastener 4.

The attachment / detachment tool of the present invention has the above-described structure. To attach or detach the form fittings 4 to the separator 2 at the time of assembling and disassembling the temporary frame shown in FIG. As described above, a rotary tool 21 such as a charging drill or a low rotation forward / reverse drill is used, and the shaft body 12 is held by the chuck of this tool.

At the time of mounting the mold fastening metal fitting 4, the cylindrical body 13 may be externally inserted into the mold fastening metal fitting 4 temporarily screwed to the end of the separator 2 and the rotary tool 21 may be normally rotated in the screwdriver direction. The cylindrical body 13 engages with the flat portion 4a of the mold fastening member 4 in the rotation direction, and the form fastening member 4 can be rotated in the screwdriver direction and screwed.

In addition, when removing the form fittings 4,
13 may be externally fitted to the form fitting 4 and the rotary tool 21 may be reversed.

Further, in the course of assembling the temporary frame, when the fitting of the raised mold hole 3 and the separator 2 is not successful, as shown in FIG. When the hooking member 14 is inserted into the hole 3 from the outer surface side and the hooking member 14 is rotated in the hole 3, the toe 16 provided at the tip engages with the end of the separator 2 and the end of the separator 2 It can be lifted up to face the hole 3, and when the formwork 1 is raised and the hooking member 14 is pulled out from the hole 3, the end of the separator 2 and the hole 3 can be fitted together.

〔effect〕

As described above, according to the present invention, it is possible to attach and remove the formwork fasteners to and from the separator during assembly and disassembly of the concrete temporary frame using a rotary tool. Will be able to work efficiently and labor-savingly. Also, since the separator hooking member is attached to the outer surface of the cylinder so as to project forward, when the temporary frame is assembled, if the holes in the formwork and the separator do not fit properly, Insert the hook member from the outer surface side and rotate it, engage the tip of the toe with the end of the separator, raise the end of the separator to face the hole, and remove the hook member from the hole It becomes possible to fit the end of the mold to the hole, and therefore the tool for attachment and detachment can perform the two functions of attaching and detaching the mold fastening metal fitting and fitting the end of the separator to the hole of the formwork. , The work efficiency of assembling and dismantling the temporary concrete frame is significantly improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a mounting / detaching tool and a mold fastening metal fitting according to the present invention, FIGS. 2 and 3 are longitudinal sectional views showing an example of use thereof, and FIG. It is sectional drawing of a concrete temporary frame. 11 …… Detachable tool, 12 …… Shaft, 13 …… Cylinder, 14 …… Hooking member.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical body having a tip opening, which is externally fitted to a mold fastening metal fitting screwed with a separator and which engages with the mold fastening metal fitting in a screwdriver direction, is fixed to the tip of the shaft body. A tool for attaching / detaching a formwork clamp having an outer surface of the body with a tip protruding forward from a tip opening of the cylindrical body and having a separator hooking member formed by bending a sharpened portion of the tip in an arc shape to form a toe. .