JPH0913398A - Jig for adjusting height of heavy-material bearing bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operating efficiency by fitting a spanner section onto the outer circumference of a bolt head section, integrally extending a shaft section to the upper section of the spanner section and unifying an operating handle section with the top section of the shaft section under a crossed state in a jig for adjusting height being screwed to a sleeve with a female screw and adjusting the height of the head section of a heavy-material bearing bolt. SOLUTION: In the height adjusting jig 10 of a bearing bolt, a hexagonal box spanner section 12a having an inside diameter conformed to the external shape of a screw head section is opened at the front end of a spanner block 12, a shaft section 14 is coupled integrally with the upper section of the spanner block 12 on the same axis, and a handle section 16 is crossed horizontally and unified with the top section of the shaft section 14 in a T-shape. When the adjusting jig 10 is used, the box spanner section 12a is fitted to the head section 2a of the bolt 2 in an attitude, in which an operator stands up, and the bolt 2 is projected and retreated in response to the direction of rotation by tuning the handle section 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height adjusting jig which is convenient for measuring while adjusting a projecting level of a support bolt for mounting a heavy object, for example.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Patent Application Laid-Open No. 4-306319, when a foundation block structure made of a precast concrete member is installed on a floor, a plurality of internal threaded sleeves are embedded in advance at the planned installation position on the floor. Every time, the support bolt is screwed into each of the embedded sleeves, each support bolt is rotated, and the installation level is adjusted by the amount of protrusion of each support bolt head from the floor surface. It is practiced to install a structure and then to fill the space between the bottom of the foundation block structure and the floor with concrete to integrate it with the floor.

According to this method, the top end adjustment and the level adjustment of the foundation block structure can be performed extremely easily as compared with the conventional method, but for this purpose, the level adjustment work of each of the support bolts is extremely important.

By the way, in this adjustment work, conventionally, as shown in FIG. 3, an operator A sets an object difference (scale) 3 on the head 2a of the support bolt 2 screwed into the floor burying sleeve 1. The bolt head 2a was rotated and adjusted up and down in accordance with the instruction of the other measurer B looking into the electronic level 4.

[0005]

However, in the case of such an adjusting method, as shown in the figure, the worker A is in a middle waist and holds the object difference 3 vertically with one hand while the spanner is held with the other hand. It is necessary to adjust the screwing amount of the bolt 2 by using a tool such as two-handed work, and it is necessary to keep a middle waist posture throughout the work. There was a big drawback.

The present invention is intended to solve the above problems. The height of a heavy load supporting bolt is such that an operator can hold a vertical portion of a table scale while performing rotation adjustment work in a standing posture. The purpose is to provide an adjustment jig.

[0007]

In order to achieve the above object, the present invention provides a height of a heavy object support bolt which is screwed into a plurality of female threaded sleeves embedded in a floor surface and whose head is height-adjusted. An adjusting jig, wherein the height adjusting jig includes a spanner portion fitted to an outer circumference of the bolt head, a shaft portion integrally provided on an upper portion of the spanner portion, and a shaft portion of the shaft portion. It is characterized in that it has an operation handle portion integrated in a crossed state at the top portion (claim 1). Further, in the present invention, it is desirable that a scale is formed on the shaft portion (claim 2).

In the height adjusting jig according to claim 1 having the above-mentioned structure, the operator holds the handle, and the operator stands up after the tip spanner is fitted to the bolt head. The heavy object supporting bolt can be rotated as it is. At this time, the shaft portion is supported vertically, and the shaft portion can be utilized as an object difference for observation by the level.

In the case of the structure of claim 2, the function can be expanded as an object difference by the scale.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Since the outline of the measurement and adjustment work other than the main part of the present invention is almost the same as the conventional one, the description will be given by using the common reference numerals except the main part.

FIG. 1 shows a support bolt height adjusting jig 10 according to the present invention. The jig 10 includes a hexagonal box spanner 12 having an inner diameter that matches the outer shape of the screw head.
a is a wrench block having an opening at the tip, a shaft portion 14 integrally connected to the upper portion of the wrench block 12 on the same axis, and at the top of the shaft portion 14 in a T-shaped horizontal crossing. It is composed of an integrated handle portion 16.

On the outer circumference of the shaft portion 14, starting from the tip of the spanner block 12, graduations 18 are formed at equal intervals.
And the attached numbers are engraved.

As shown in FIG. 2, the length of the shaft portion 14 is such that the handle portion 16 is at a position where it is most easy to work when an adult is standing, as shown in FIG. 2, from the abdomen of the worker A to the chest. The height is an arbitrary length and is set to a height at which the measurement person B can easily measure.

The adjustment work using the adjusting jig 10 is as follows.
As shown in FIG. 2, with the operator A standing upright, the box spanner portion 12a is fitted to the head portion 2a of the bolt 2, and the handle portion 16 is rotated to move the bolt 2 according to the rotation direction.
The shaft portion 14 is necessarily held vertically when the handle is operated.

Therefore, according to the instruction of the measuring person B who observes the scale 18 engraved on the shaft portion 14 through the level 4, the operator A simply rotates the handle portion 16 in the forward and reverse directions and vertically adjusts it. It will be good.

Although the scale 18 is engraved on the outer periphery of the shaft portion 14, it may be left unmarked, and a tape or the like may be temporarily attached and used.

[0017]

As described above, in the height adjusting jig for the heavy object support bolt according to the invention of claim 1, the operator holds the handle and the tip spanner portion is fitted to the screw head portion. After this, the worker can rotate the adjustment screw while standing upright, so the work efficiency is much higher than that in the conventional work where both hands are used to adjust and maintain the difference between the hips. Improved, and the burden on the operator is reduced. Further, at this time, since the shaft portion is supported vertically, the shaft portion can be utilized as an object difference for observation by the level, and therefore there is an advantage that even a person who looks into the level can easily perform the observation.

In the case of claim 2, there is an advantage that the function can be expanded as an object difference by the scale and the usability as an adjusting jig is improved.

[Brief description of the drawings]

FIG. 1 is a schematic view of a height adjusting jig according to the present invention.

FIG. 2 is an explanatory view showing a work of adjusting a heavy object support bolt using the same height adjusting jig.

FIG. 3 is an explanatory view showing a conventional work of adjusting a heavy load supporting bolt.

[Explanation of symbols]

 1 Embedded sleeve 2 Heavy load support bolt 2a Bolt head 10 Height adjusting jig 12a Box spanner part 12 Spanner block 14 Shaft part 16 Handle part 18 Scale

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Mitsuyuki Yasuhara 35 Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Obayashi Corporation Kobe Branch (72) Inventor Shigekazu Sakurai 35 Nishimachi, Chuo-ku, Kobe City, Hyogo Prefecture Obayashi Kobe Corporation In branch (72) Inventor Go Watanabe 35 Nishimachi, Chuo-ku, Kobe-shi, Hyogo Obayashi Corp. Kobe Branch (72) Inventor Kei Sakamoto 35 Nishimachi, Chuo-ku, Kobe-shi, Hyogo Obayashi Corp. Kobe Branch (72) Invention Tetsuro Ito 35 Nishimachi, Chuo-ku, Kobe-shi, Hyogo Obayashi Corporation Kobe Branch

Claims (2)

[Claims] 1. A height adjusting jig for a heavy object supporting bolt, which is screwed into a female threaded sleeve embedded in a floor surface and whose head is height-adjusted, said height adjusting jig comprising: A wrench portion that fits around the outer circumference of the bolt head, a shaft portion that extends integrally with the upper portion of the wrench portion, and an operation handle portion that is integrated in a crossed state at the top of the shaft portion. A special jig for adjusting heavy-duty support bolts. 2. The jig for adjusting a heavy load supporting bolt according to claim 1, wherein a scale is formed on the shaft portion.