JPH053352U - Anchor bolt mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the anchor bolts are installed with relatively rough accuracy, the centering with the base of the installation device can be easily performed, and the base liner for centering the machinery is also installed separately. Is unnecessary. [Arrangement] The anchor bolt and the anchor portion of the sleeve are each formed in a rectangular shape, and the horizontal movement gap dimension of both anchor portions and the gap dimension between the anchor bolt main body and the sleeve main body are set to be the same, and the tip of the sleeve is set. A base plate was integrally provided in the opening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for an anchor bolt used when installing various mechanical devices of industrial equipment.

[0002]

[Prior Art]

 Generally, when installing an industrial machine that generates a large mechanical force such as a rolling mill, the anchor bolts embedded and fixed in the floor support and fix the base of the machine equipment to stabilize the machine. I am trying to install it.

Conventional anchor bolts of this type include eye anchor bolts, plate anchor bolts, mallet type anchor bolts, etc., which are used by directly embedding the bolts themselves in the floor or by mounting a sleeve on the floor. It has a combined structure in which it is embedded and the bolts are installed in this sleeve in an inserted state. When attaching such anchor bolts to the floor, they are placed at appropriate positions defined by the relationship with the machine base before installing the machine, and the surroundings are filled with concrete for installation.

[0004]

[Problems to be solved by the device]

 However, in such a configuration, when fixing the anchor bolt before installing the machine, the installation dimensional error of the anchor bolt causes the accuracy and clearance of the anchor bolt mounting hole drilled in the base of the device itself. , And the mutual dimensions with each related mechanical device. On the other hand, there is no horizontal adjustment freedom when directly laying the foundation bolts with eyes and plates, and when the mallet-type foundation bolts are directly embedded, the horizontal adjustment freedom is about 2.5 to 4 mm. It was something I could only get. For this reason, there is a problem that it takes a lot of man-hours to center the anchor bolt and the mounting hole, and if the error is large, there is a drawback that the anchor bolt embedding position needs to be changed again.

Further, in order to adjust the levelness of the installation machine, in the conventional anchor bolt device, the base liners are pad-mounted on both (one) sides of the anchor bolts, and then the taper liner is laminated and adjusted. Since the centering is performed in this manner, the difficulty of adjusting the anchor bolt itself and the difficulty of the centering work due to the mounting accuracy of the base liner poses a problem.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art and to easily perform centering with the base of the installation device even if the anchor bolt is installed with relatively rough accuracy. It is to provide an anchor bolt mounting structure that does not require a separate centering base liner.

[0007]

[Means for Solving the Problems]

 To achieve the above object, an anchor bolt mounting structure according to the present invention is an anchor bolt mounting structure in which an anchor bolt is embedded through a sleeve, and the anchor bolt and the anchor portion of the sleeve are each formed in a square shape. The gap size between the horizontal movement of the anchor and the gap size between the anchor bolt body and the sleeve body is set to be the same, and the base plate is integrally provided at the tip opening of the sleeve. is there.

[0008]

[Action]

 According to the above configuration, since the bolt anchor portion and the sleeve anchor portion have a square shape, both the anchor portions and the bolt main body portion have the same horizontal movement gap while preventing co-rotation when tightening the bolt. Adjustment in the horizontal plane is possible within this gap range. As a result, the allowable movement of the bolt in the conventional direct-embedded anchor bolt is extremely small (0 to 4 mm), and it is possible to eliminate the fact that it was not possible to adjust it substantially, and it is possible to increase the degree of freedom of adjustment. .. Further, in the present invention, the base plate for the centering liner is integrally formed on the upper part of the bolt sleeve, so that the base plate can be installed only by embedding the sleeve, and the centering work for machine installation can be efficiently and easily performed. Become.

[0009]

【Example】

 Hereinafter, a specific embodiment of the anchor bolt mounting structure according to the present invention will be described in detail with reference to the drawings.

1 to 2 show details of the embodiment. As shown in this figure, a sleeve 12 directly embedded in the concrete floorboard 10 and an anchor bolt 14 mounted inside the sleeve 12 are provided.

First, the sleeve 12 has a structure in which a rectangular container-shaped sleeve anchor portion 18 is integrally provided at the lower end of a sleeve body 16 which is a cylindrical container having openings at both ends. The sleeve anchor portion 18 has a square planar shape and is set to a depth that can accommodate a bolt anchor portion described later. An opening corresponding to the inner diameter of the sleeve body 16 is formed in the center of the upper surface of the anchor portion 18, and the sleeve body 16 is erected with the lower end edge of the sleeve body 16 integrated by welding or the like. . Further, a liner base plate 20 is attached to the outer peripheral surface of the upper end edge of the sleeve body 16, which is formed by a rectangular or circular thick plate. The base plate 20 is also integrally attached beforehand to the outer circumference of the tip of the sleeve body 16 by a method such as welding, and serves as a reference surface of the taper liner 22 for adjusting the levelness of the mechanical device to be installed.

The sleeve 12 is embedded and fixed in a state where the base plate 20 is exposed on the surface of the floorboard 10 and the upper end of the sleeve body 16 is opened to the floorboard surface. The sleeve anchor portion 18 is located at the deepest portion, and its upper surface functions as an anchor bearing surface.

On the other hand, the anchor bolt 14 is concentrically inserted into the sleeve 12, and a square anchor plate 24 is fastened to the insertion end by a fixing nut 26 as in the sleeve anchor portion 18, and the bolt main body is tightened. It is integrally fixed to the lower end of 28. The anchor plate 24 is integrally fixed by welding so as not to rotate relative to the bolt main body 28 due to loosening of the nut 26 or the like. The bolt body 28 has a length that protrudes from the upper end opening of the sleeve 12 and penetrates the machine base 30 of the equipment to be installed, and penetrates the mounting hole 32 of the machine base 30 and can be fixed and held by the tightening nut 34. I am trying.

As described above, the anchor plate 24 of the anchor bolt 14 has a square shape similar to that of the sleeve anchor portion 18. However, in this embodiment, the dimensional difference between the two is S1 = L-1 and the sleeve is The dimensional difference S2 = D−d between the main body 16 and the bolt main body 28 is set to be equal. Therefore, the distance range in which the anchor plate 24 can move horizontally with respect to the sleeve anchor 18 is equal to the distance range in which the bolt body 28 can move horizontally with respect to the sleeve body 16.

Therefore, according to this embodiment, the anchor bolt 14 with the anchor plate 24 is housed in the sleeve 12 with the liner base plate 20, and the anchor bolt main body 28 and the sleeve main body 16 are provided. The clearance dimension S2 and the clearance dimension S1 of the anchor plate 24 and the sleeve anchor portion 18 are the same, and the degree of freedom suitable for the construction conditions can be selected in the range of 0 to several tens of mm, and a large adjustment clearance is provided. Can be done.

Furthermore, in this embodiment, the liner base plate 20 WP is integrated and integrated on the upper end of the sleeve body 15, and the taper liner 22 can be centered between the liner base plate 20 WP and the machine base 30. Can be unnecessary. Therefore, it is possible to eliminate the need for a machine product centering base liner and facilitate anchor work.

Although the present embodiment shows an example in which it is used as an improved version of a direct-embedded anchor bolt, it can also be used as a box hole foundation anchor bolt as a method of shortening the process. It is also effective when applied to mechanical products that have a narrow space and do not have a base liner installation space.

[0018]

[Effect of the device]

 As described above, according to the anchor bolt mounting structure of the present invention, in the mounting structure in which the anchor bolt is embedded through the sleeve, the anchor bolt and the anchor portion of the sleeve are formed in a rectangular shape, respectively. The size of the horizontal movement gap of the anchor and the gap between the anchor bolt body and the sleeve body were set to the same, and the base plate was integrally provided at the tip opening of the sleeve. The degree of freedom can be up to several tens of millimeters, which greatly reduces the man-hours for directly anchoring the anchor and shortens the construction period, and also reduces the machine-installation man-hours by eliminating the pad placing work for the centering base liner. And the excellent effect that the construction period can be shortened can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing an attachment structure of an anchor bolt according to the present embodiment.

FIG. 2 is a sectional view taken along the line AA of FIG.

[Explanation of Codes] 10 Concrete Floor Board 12 Anchor Sleeve 14 Anchor Bolt 16 Sleeve Body 18 Sleeve Anchor Section 20 Liner Base Plate 22 Tapered Liner 24 Anchor Plate 26 Fixing Nut 28 Bolt Body 30 Machine Base 32 Mounting Hole 34 Tightening Nut

Claims (1)

[Claim 1] In a mounting structure in which an anchor bolt is embedded via a sleeve, the anchor bolt and the anchor portion of the sleeve are each formed in a rectangular shape, and a horizontal movement gap between both anchor portions is formed. An anchor bolt mounting structure, characterized in that the dimension and the clearance dimension between the anchor bolt main body and the sleeve main body are set to be the same, and a base plate is integrally provided at the tip opening portion of the sleeve.