JP2010281114A - Anchor bolt with base - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein in the conventional foundation work for equipment and devices, proceeding to the next process is not performed until concrete reaches a proper strength, so that under some construction condition (such as outside air temperature), the process of construction takes one to several weeks before the devices can be installed, and further a post construction anchor used in most of fields is more simple in construction as compared with the anchor bolt, but it is such a simplified construction method to lower the strength, and it requires technology and time to adjust the level of concrete crest of a portion where the devices are installed, and although precast product is provided for reduction of term of works, the product cannot be used when non-landing is not corrected, resulting in limitation on application. <P>SOLUTION: In order to eliminate the above problem, the devices are installed on the anchor bolt with a base before concrete is placed, and after the level is adjusted and the bolt is tightened, concrete is placed. Thus, the disadvantages are all overcome. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an anchor bolt with a base capable of fixing upper equipment before placing concrete on a foundation and then placing concrete on it.

Originally, when creating a concrete foundation, it is necessary to insert anchor bolts accurately. However, in the case of soil where anchor setting is difficult, it is highly probable that the anchor bolts will be misaligned when placing concrete, and it takes effort and labor to correct them. It was. For this purpose, waiting for the concrete to harden, positioning the anchors, drilling holes with them, and driving “post-construction anchors”. Post-construction anchors are easy to construct, but they have to be driven in after the concrete strength has reached an appropriate value, so we could not proceed to the next process for several weeks compared to the method of anchor setting. This was a factor that made the construction period longer.

Therefore, there are precast concrete products for the purpose of shortening the construction period, but their use is limited to a certain extent and they can only deal with small-scale items. The main drawback is only in flat places where there is no level difference. Since it cannot be installed, the scenes that can be used are very limited.

The top of the concrete is required to have a plasterer's skill. Especially when installing large equipment, there is no backlash even if there is unevenness in the case of 3 points, but if it becomes 4 points or more, it is uneven. If there was, the equipment was not sat down and rattled.

Problems to be solved by the inventor

This has the following drawbacks.
(B) Since the next process cannot be carried out until the proper strength is obtained in the concrete, the construction process was extended from one week to several weeks depending on the construction conditions (outside temperature, etc.).
(B) The construction anchor is easier to construct than the anchor bolt, but the pull-out strength is reduced.
(C) The precast product could not be used unless the unevenness was corrected.
(2) It took time and skill to adjust the level of the top of the concrete where the equipment is installed.

The present invention is intended to solve the above problems.

In order to eliminate the above problems, it is necessary to wipe out the existing concept of hitting concrete and proceeding the process after the strength of the concrete is achieved. In other words, if the equipment is installed on the anchor bolt with the base before the concrete is cast and the concrete is driven after leveling and bolting, all the above-mentioned drawbacks can be solved.

Since the concrete is cast after fixing the equipment to the anchor bolt with base, the problem that the anchor bolt is displaced after the concrete is cast or the level at the installation location is not correct is solved.

Since the process proceeds to the next process immediately after placing the concrete, the work period of several weeks is shortened.

Embodiments of the present invention will be described below with reference to FIGS.

First, the main anchor bolt 3 is fixed to the base plate 1 supporting the load with the upper nut 4 for length adjustment and the lower nut 5 for length adjustment. At this time, the tightening position is finely adjusted in consideration of the thickness of the concrete at the installation location and the protrusion of the neck after installation.

If the main anchor bolt 3 is not standing vertically due to factors such as the ground being inclined or if a pulling reaction force is expected on the ground, an anchor according to the purpose is used for the ground using the ground anchor hole 6. I will drive it.

After that, level adjustment is performed at the top end of the level adjusting nut 2, the equipment is installed, the equipment column base fixing nut 11 is tightened, the fixing is completed, and the concrete 12 is driven to the lower end of the equipment column base hardware.

When fixing one column base metal with two or more anchor bolts, as shown in FIG. 3, the sub anchor bolt fixing upper nut 9 and the sub anchor bolt fixing to the column base metal 7 of the apparatus for fixing the sub anchor bolt 8 Temporarily fixed with the lower nut 10 and installed on the main anchor bolt 3.

Thereafter, as shown in FIG. 4, the sub-anchor bolt fixing upper nut 9 and the sub-anchor bolt fixing lower nut 10 are adjusted and fixed at a position where the lower end of the sub-anchor bolt 8 contacts the base plate 1. Fixing the column base metal 7 of the device to be fixed with the device column base fixing nut 11, and placing concrete 12.

As described above, according to the present embodiment, the concrete can be adhered to the anchor bolt, and since it is not affected at all by the curing period of the concrete, the construction period can be greatly shortened.

AA line sectional view in FIG. The top view of the prior construction anchor bolt which shows embodiment of this invention Sectional view installed on the column base hardware of the equipment to fix the sub-anchor bolt Sectional view of the column base hardware of the equipment to be fixed installed on the main anchor bolt Cross section after placing concrete

DESCRIPTION OF SYMBOLS 1 Base plate 2 Level adjustment nut 3 Main anchor bolt 4 Base fixing upper nut 5 Base fixing lower nut 6 Ground anchor hole 7 Column base metal fixture 8 Sub anchor bolt 9 Sub anchor bolt fixing upper nut
10 Lower nut for fixing sub-anchor bolt 11 Equipment column base fixing nut 12 Concrete

Claims (2)

Stand the main anchor bolt on the base. At this time, provide a nut for adjusting the length and a nut for level adjustment when installing the equipment. After installing this on the ground, install the equipment on the main anchor bolt. This is an anchor bolt with a base that is installed on the column base of the equipment first, and then lowered to the installation location to match the level and complete the installation. The anchor bolt with a base according to claim 1, wherein a hole for driving an anchor into the ground is provided in the base when the ground is uneven or the base is difficult to stabilize.

Images