Gate-type anchor set jig

Abstract

This invention provides a simple gate-type anchor set jig 1 that allows for easy and highly accurate leveling of the tip of an anchor bolt embedded in concrete foundations for residential buildings, etc., without requiring special technical skills or the need to hold the anchor bolt with one hand. [Solution] The system consists of a gate-shaped horizontal member 2, which has a gate-like shape when viewed from the front and is used by being horizontally mounted on the opposing upper end faces of the formwork, and an anchor set shaft member 3 that is attached to the approximate center of the top plate 2b of the gate-shaped horizontal member 2 so as to be vertically movable up and down. A magnet 2a is provided near at least one end of the gate-shaped horizontal member 2 in the longitudinal direction L as a means of fixing to the formwork, and a cap nut 3a is provided at the upper end of the anchor set shaft member 3 as an anchor set receiving member that allows the anchor set shaft member 3 to move up and down, and a magnet 3b is provided at the lower end of the anchor set shaft member 3 as an indicator member that serves as an indicator for the tip of the anchor bolt.

Description

Technical Field

[0001] The present invention relates to a set jig for an anchor bolt used for leveling the tip (upper end) of an anchor bolt during housing and other civil engineering foundation works.

Background Art

[0002] An anchor bolt used for a concrete foundation for housing or the like is embedded in the foundation concrete after being adjusted through predetermined positioning work and leveling work of the tip portion in a formwork in advance. For the leveling work of the tip portion of the anchor bolt, that is, the setting work of the anchor bolt, conventionally, a measuring rod, a leveling tool, etc. have been used, and finally, the tip of the anchor bolt has been fixed in a state where it is grasped by hand.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] As described above, when leveling the tip of an anchor bolt, various tools and jigs, for example, dedicated tools as shown in Patent Documents 1 and 2, may be used depending on the application. Basically, the above work is mainly a one-person operation, and the anchor bolt must be held with one hand. Moreover, since operations to change the posture up and down frequently occur, the position is unstable and rework is also involved, so the work efficiency was poor. In order to solve the above problems, an object of the present invention is to provide a portal anchor setting jig that can perform the leveling work of the tip of an anchor bolt easily without requiring special technical skills, with good workability and high precision, without holding the anchor bolt with one hand. [Means for solving the problem]

[0005] The gate-type anchor set jig of this invention comprises a gate-type horizontal member, which has a gate-like shape when viewed from the front, and is used by horizontally mounting it on the opposing upper end faces of a formwork, and an anchor set shaft member that is vertically movable up and down attached to approximately the center portion of the top plate of the gate-type horizontal member. The gate-type horizontal member is provided with a means for fixing it to the formwork near at least one of its longitudinal ends, and the anchor set shaft member is provided with an anchor set receiving member at its upper end to allow vertical movement of the anchor set shaft member, and the anchor set shaft member is provided with an indicator member at its lower end to serve as a guide for the tip of the anchor bolt when setting the anchor bolt. [Effects of the Invention]

[0006] Using the gate-type anchor set jig of this invention eliminates the need to hold the anchor bolt with one hand as in conventional methods, resulting in increased precision and improved work efficiency. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of the gate-type anchor set jig according to the present invention, with a rectangular top plate. [Figure 2] This is a plan view of the gate-type anchor set jig according to the present invention, in the case where the top plate is a parallelogram. [Modes for carrying out the invention]

[0008] The following describes the embodiments for implementing the gate-type anchor set jig according to the present invention, based on Figures 1 and 2. 1 is a gate-type anchor set jig, consisting of a gate-type horizontal member 2, which has a gate-like shape when viewed from the front and is used by horizontally mounting it on the opposing upper end faces of the formwork, and an anchor set shaft member 3 that is vertically movable up and down and attached to approximately the center of the top plate 2b of the gate-type horizontal member 2. Magnets 2a are provided near both ends of the gate-type horizontal member 2 as means of fixing it to the formwork, and a cap nut 3a is provided at the upper end of the anchor set shaft member 3 as an anchor set receiving member that allows the anchor set shaft member 3 to move up and down, and a magnet 3b is provided at the lower end of the anchor set shaft member 3 as an indicator member that serves as a guide for the tip of the anchor bolt when setting the anchor bolt.

[0009] The gate-shaped horizontal member 2 is gate-shaped when viewed from the front, in order to secure working space by having the top plate 2b maintain a high position above the upper end surface of the formwork. Furthermore, if the shape of the top plate 2b in plan view is either a rectangle or a parallelogram as described in claim 2, interference when placing the gate-shaped horizontal member 2 on the formwork can be avoided. Figure 2 shows the case where the top plate 2b is a parallelogram in plan view. Furthermore, although the anchor set shaft member 3 uses a fully threaded shaft member as described in claim 3, using this fully threaded shaft member makes it easier to attach the anchor set receiving member 3a and the support member 3b, which are provided at the upper and lower ends, respectively. In this embodiment, the anchor set receiving member 3a uses a cap nut that is less likely to accumulate concrete debris, but as described in claim 4, any of a cap nut, UFO nut, Phillips screw, slotted screw, or hex screw may be used. Furthermore, since the supporting member in this embodiment uses a magnet 3b, the magnet 3b magnetically attaches to the tip of the anchor bolt, eliminating the need for workers to grasp the anchor bolt by hand during work, thus improving work efficiency. Note that the supporting member can be any magnetic material as described in claim 5, and the material is not particularly limited. Furthermore, in this embodiment, as a means of fixing to the formwork, a magnet 2a is used as described in claim 6, which allows for easy one-touch fine adjustment and offers good workability. However, other fixing devices, such as mechanical clamps, may also be used. If the magnet 2a is made detachable as described in claim 7, it can be flexibly adapted to the site conditions. Also, although this fixing means is provided near both ends in this embodiment, it may be provided only near one end.

[0010] Next, the method of using the gate-type anchor set jig according to the present invention will be explained. First, the gantry-type horizontal member 2 of the gantry-type anchor set jig 1 is placed on the upper end surface of the formwork. The gantry-type horizontal member 2 is fixed to the formwork with a single touch by magnets 2a provided near its longitudinal end simply by being placed on the formwork. Next, in this state, the cap nut (anchor set receiving member) 3a attached to the upper end of the anchor set shaft member 3 is adjusted using a laser level or the like so that the magnet (indicating member) 3b is at the predetermined level. Furthermore, when setting the anchor in a cylindrical anchor set jig that is deep inside (approximately 50mm to 100mm), rotate the anchor set shaft member 3 to adjust the length and adjust the magnet (indicator member) 3b so that it is at the predetermined level. After the level setting adjustment work described above, the tip of the anchor bolt is magnetically attached to the magnet (indicator member) 3b at the lower end of the anchor set shaft member 3. In this state, the knob of the anchor bolt mounting bracket, which is pre-set on the formwork, is turned to secure the anchor bolt to the anchor bolt mounting bracket. After the anchor bolt is secured to the anchor bolt mounting bracket, the gate-type anchor set jig 1 is removed and moved to another location, where the same work is performed. As described above, using the gate-type anchor set jig 1 of this invention eliminates the need to hold the anchor bolt with one hand as in conventional methods, increasing accuracy and improving work efficiency. [Explanation of Symbols]

[0011] 1. Gate-type anchor set jig 2. Gate-type horizontal members 2a Magnet (means for fixing to the formwork) 2b Top plate 3 Anchor set shaft member 3a Cap nut (Anchor set receiving member) 3b Magnet (Indicator) L Longitudinal direction

Claims

1. A gate-type anchor setting jig used for setting the level of the tip of an anchor bolt embedded in a concrete foundation, the gate-type anchor setting jig comprises a gate-shaped horizontal member that is horizontally mounted on opposing upper end faces of a formwork and has a gate-shaped front view, and an anchor set shaft member that is vertically movable up and down attached to approximately the center of the top plate of the gate-type horizontal member, wherein at least one of the longitudinal ends of the gate-type horizontal member is provided with means for fixing to the formwork, and the upper end of the anchor set shaft member is provided with an anchor set receiving member that allows the anchor set shaft member to move up and down, and the lower end of the anchor set shaft member is provided with an indicator member that serves as a guide for the tip of the anchor bolt when setting the anchor bolt.

2. The gate-type anchor set jig according to claim 1, characterized in that the shape of the top plate of the gate-type horizontal member in plan view is either a rectangle or a parallelogram.

3. The gate-type anchor set jig according to claim 1, characterized in that the anchor set shaft member is a fully threaded shaft member.

4. The gate-type anchor set jig according to claim 1, characterized in that the anchor set receiving member is one of a cap nut, a UFO nut, a Phillips screw, a slotted screw, or a hexagonal screw.

5. The gate-type anchor set jig according to claim 1, characterized in that the indicator member is made of a magnetic material.

6. The gate-type anchor set jig according to claim 1, characterized in that the fixing means uses a magnet.

7. The gate-type anchor set jig according to claim 6, characterized in that the magnet is detachable.

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