JPH09125415A - Foundation base for equipment devices - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation base for equipment devices which sufficiently secures the positioning accuracy of anchor bolts for installation of equipment devices and improves the workability at the time of construction of the foundation base and also provides a sufficient strength against the vibration of the equipment devices installed there. SOLUTION: After the fitting position of equipment devices on the upper face of a steel skeleton frame 3 has been precisely measured, pierced holes 7a, 7b piercing the upper and lower flange members 2a, 2b of the steel skeleton member 2 at the position are formed. A sleeve 8 is inserted in the upper pierced hole 7a to get in contact with the lower flange member 2b and connected thereto and an anchor bolt 9 for installation of equipment devices is inserted in the arranged sleeve 8 and the height is accurately adjusted. Then, the upper and lower ends of the sleeve 8 are fixed by nuts 10 to secure the position of the anchor bolt 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a base stand for accurately supporting and fixing equipment such as a generator and a turbine.

[0002]

2. Description of the Related Art In general, a conventional base stand for a generator or turbine is constructed by assembling all the frameworks with reinforcing bars, and binding anchor bolts for installing equipment at predetermined positions of the reinforced bars. It was formed by mounting it using a reinforcing bar or an anchor plate, and then pouring concrete so that the anchor bolt partially projects from the installation surface of the equipment.

Further, as another means, at the time of installing the equipment, a box removing hole for setting an anchor bolt in accordance with the installation has been formed in a concrete frame which is a pedestal.

[0004]

SUMMARY OF THE INVENTION However,
In a conventional foundation stand, a large number of reinforcing bars are assembled horizontally and vertically as a frame, and the reinforcing bars are several cm to
The anchor bolts are arranged in a grid pattern at intervals of about 20 cm, and the anchor bolts for installing the equipment are attached to the reinforcing bar directly or via the anchor plate, so that the positioning accuracy of the anchor bolts can be sufficiently secured. In addition, there is a problem in that the attached anchor bolts are displaced due to vibration of the vibrator or the like when pouring concrete, and the equipment cannot be installed accurately after the concrete is hardened.

Since the foundation pedestal is constructed as described above, cracks are likely to occur around the anchor due to vibrations during operation of the equipment and the strength of the pedestal and the function of the equipment can be improved. There is a problem in that a large amount of labor is required for maintenance and repairs, etc. because of a large decrease. In addition, the method of forming the anchor box punching hole in the gantry tends to cause the box to be displaced when it is difficult to accurately install the box at a predetermined position between narrow reinforcing bars or when concrete is poured. In addition, the work of unpacking the concrete after hardening the frame and setting the anchor bolts according to the equipment installation and then filling the holes with concrete increases the work efficiency, resulting in a long work period. There was also.

Further, when assembling the above-mentioned rebar, a large amount of temporary iron aggregate is used as a support for the rebar group in order to secure the assembling accuracy, and most of them are buried in the skeleton during concrete placing. It was uneconomical. Therefore, the present invention has been made by paying attention to the above-mentioned unsolved problems of the related art, and sufficiently secures the positioning accuracy of the anchor bolt for equipment installation by using the steel frame as the main frame. In addition, it is possible to improve the workability when constructing a foundation pedestal, and to provide a foundation pedestal for equipment that has sufficient strength against vibration and the like of the equipment to be installed.

[0007]

In order to solve the above-mentioned problems, the foundation pedestal of the equipment according to the present invention is assembled by a steel frame member in the foundation pedestal of the equipment for supporting and fixing the equipment. Steel frame forming a skeleton, anchor bolts for installing equipment equipment attached to the steel frame, and driving around the steel frame by partially protruding the anchor bolt from the installation surface of the equipment Concrete,
It is characterized by consisting of.

As a result, the frame member can be used as a highly rigid steel frame to easily and accurately position the anchor bolts for installing equipment. Also,
A mounting member is mounted on the outer side of the steel frame inside the concrete, and the reinforcing bar is arranged on the basis of this mounting member, so that the foundation cradle is installed as a rigid and tenacious steel reinforced concrete structure (SRC structure). Supports vibration of equipment and suppresses the occurrence of cracks.

Furthermore, the reinforcing bar provided around the steel frame can be used as a required minimum amount to improve workability during concrete pouring and to function to prevent cracks around the anchor of the concrete being poured. .
Further, the mounting members are arranged in a predetermined length or in series, and the reinforcing bars are arranged through the members, whereby the mounting work of the reinforcing bars can be performed accurately with reference to the mounting members. Muscle work can be simplified.

On the other hand, a pedestal is attached to the steel frame member in accordance with the installation of equipment, and anchor bolts for installing the equipment are attached to the pedestal, so that a hole can be accurately drilled on site. It is not necessary to perform the above, and the installation position of the anchor bolt can be positioned only by performing the work of joining the pedestal in which the hole is formed in advance.

Further, when the installation position of the equipment is not at the position where the skeleton member is arranged, the anchor bolt can be supported and fixed by attaching the pedestal to the skeleton member. Furthermore, a sleeve is attached to the steel frame, and the anchor bolt for installing the equipment is inserted and fixed inside the sleeve,
A mechanism for attaching the anchor bolt to the steel frame is embodied, and the anchor bolt is positioned by fixing the sleeve to the steel frame before concrete is poured, and the anchor bolt is adjusted to the appropriate height inside the sleeve. High-precision installation can be performed by fixing the above.

Further, since the steel frame is provided with an insertion hole, a washer for positioning an anchor bolt is attached to the insertion hole, and the anchor bolt is fixed by inserting the insertion hole and the washer. , A hole larger than the diameter of the anchor bolt was formed at the position where the equipment was supported and fixed to the steel frame without accurate dimensional accuracy, and then a washer for positioning determination of the anchor bolt was attached accurately. Later, by inserting the anchor bolt into the hole inside the washer while adjusting the height, it is possible to perform highly accurate positioning.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a base stand for equipment according to the present invention will be described below with reference to the drawings. First, as shown in FIG. 1, a plurality of steel frame members 2 such as H-shaped steels are alternately combined horizontally and vertically on the side of the body of a foundation frame to be constructed, welded or bolted together, and assembled by the steel frame member 2 into a shaft. Steel frame 3 composed of pillars and beams
To form

Then, as shown in FIGS. 2 (a) and 2 (b),
Through holes 7a, 7b are formed through the upper and lower flange members 2a, 2b of the steel member 2 at the installation position of the equipment, and then the sleeve 8 is inserted into the upper through hole 7a and abuts on the lower flange member 2b. Install and join. After the anchor bolt 9 for installing equipment is inserted into the sleeve 8 installed at that time to accurately adjust the height, the upper and lower ends of the sleeve 8 are fixed by the nut 10 to fix the anchor bolt 9 Secure the position. Next, the mounting members 4 made of a plurality of chevron steels are formed around the pillars and the beams of the steel frame 3 with predetermined intervals.
Are joined by a known method so that the outer surface thereof abuts the end of the steel frame member 2.

Then, the reinforcing bars 5 for columns or beams are joined to the steel members 2 to which the mounting members 4 are joined so as to maintain a predetermined interval so as to project to the outer edges of the mounting members 4. The attachment member and the reinforcing bar are joined by a binding bar or a binding wire (not shown). After that, a plurality of reinforcing bars (bars) 6 are brought into contact with the axial reinforcing bars at predetermined intervals in the axial direction of the joined reinforcing bars for columns or beams to arrange the reinforcing bars.

Then, after holding a predetermined cover thickness on the outside of the stirrup bar 6 arranged, a formwork (not shown) is installed, concrete 12 is placed in the formwork, and the cast pillars, Foundation stand 1 by removing the formwork after hardening the concrete 12 for the floor of the installation surface of the beam and equipment
Build 1. Then, the equipment is installed on the upper surface of the installation surface frame of the built base 11, and the anchor bolts 9 protruding from the installation surface are screwed to support and fix the equipment to the base 11.

In this embodiment, the steps of the base stand 11 to be constructed are not limited to this, and it goes without saying that the base stand 11 can be constructed by appropriately advancing each step. In this way, the foundation stand 1 for equipment
1 has a steel frame reinforced concrete structure as a whole, so that the steel frame 3 serving as a frame can suppress the generation of cracks in the concrete 12 against vibration during operation of the equipment.

Further, since the steel frame 3 serving as a frame can be accurately assembled, the anchor bolt 9 can be easily positioned and the concrete 12 can be poured when the anchor bolt 9 for installing equipment is attached. Even after the installation, the displacement of the concrete 12 due to the weight of the concrete 12 does not occur. Furthermore, the foundation stand 1
Since 1 is mainly composed of the steel frame 3, it is possible to reduce the complicated reinforcing work by setting the amount of reinforcing bars used to the minimum necessary amount, and to eliminate the need for the conventional temporary iron aggregate.

Further, the steel frame member 2 on the installation surface of the facility equipment
Then, after attaching the sleeve 8 in advance, the anchor bolt 9
By inserting, the level of the anchor bolt 9 can be easily adjusted. Next, another embodiment of the present invention will be described. Base stand for this equipment 11
In the above embodiment, the structure of the mounting portion of the anchor bolt 9 is changed, and the description of the other structures is omitted.

First, after measuring the installation position of the equipment of the constructed steel frame 3, the pedestal 13 made of flat steel in which the hole 13a larger than the diameter of the anchor bolt 9 is formed in advance is installed in the equipment. The upper and lower flanges 2a, 2b of the steel frame member 2 are butted against each other and welded so as to be arranged in the vicinity of the installation position. Then, washers 14 having holes of substantially the same size as the outer diameter of the anchor bolt 9 are joined to the upper and lower surfaces of the hole 13a of the attached pedestal 13 with high accuracy to accurately position the anchor bolt 9 to be attached. After that, the anchor bolt 9 is inserted through the washer 14 to adjust the level, and then fixed by the nut 10.

As described above, after the pedestal 13 is arranged without accurately positioning the hole 13a formed therein beforehand at the mounting position of the equipment, the washer 14 is joined to the accurate mounting position of the anchor bolt 9. By doing so, it is not necessary for the worker to perform an accurate drilling work at the position where the anchor bolt 9 is installed, and only a simple welding work can be performed.

The mechanism of the attachment portion of the anchor bolt 9 is not limited to the above-mentioned embodiment, but can be directly joined to the end portions of the flanges 2a and 2b of the steel frame member 2 as a simple structure. Further, instead of the bracket type pedestal, a separate beam steel frame member is disposed between the adjacent beam steel frame members 2 of the steel frame, and the anchor bolt 9 is used in the same manner as in the case of the pedestal. Alternatively, the sleeve 8 may be installed. (Not shown)

[0023]

As described above, according to the foundation pedestal of the equipment of the present invention, the steel frame which is a frame assembled by the steel frame member and the anchor bolt for installing the equipment attached to the steel frame. And, because concrete is placed around the steel frame and the reinforcing bar so that the anchor bolts partially protrude from the installation surface of the equipment, cracks due to vibration of the equipment due to the steel frame occur. And it is possible to sufficiently secure the positioning accuracy of the anchor bolt for installing the equipment.

Further, by arranging only the reinforcing bars for reinforcing cracks around the steel members with the use of the mounting members in the required minimum amount, the reinforcing work can be simplified and the construction period can be greatly shortened.

[Brief description of the drawings]

FIG. 1 is a side view showing a steel frame of a base frame of a facility device according to an embodiment of the present invention.

2A and 2B show a base pedestal of a facility device according to an embodiment of the present invention. FIG. 2A is a partial plan view and FIG. 2B is a sectional view taken along line AA of FIG. 2A. is there.

FIG. 3 shows a base stand of equipment according to another embodiment of the present invention, which is a sectional view taken along line BB of FIG. 2 (a).

[Explanation of symbols]

 2 is a steel member 2a and 2b is a flange member 3 is a steel frame 4 is a mounting member 5 is a reinforcing bar 6 is a stirrup bar 7a and 7b is a through hole 8 is a sleeve 9 is an anchor bolt 10 is a nut 11 is a base stand 12 is concrete 13 The cradle 13a has a hole 14 has a washer

Claims (5)

[Claims] 1. A base frame of a facility device for supporting and fixing the facility device, comprising: a steel frame which is a frame assembled by a steel frame member; and an anchor bolt for mounting the facility device, which is attached to the steel frame. A foundation pedestal for facility equipment, comprising: concrete cast around the steel frame such that the anchor bolts partially project from the installation surface of the equipment. 2. The base stand of the equipment according to claim 1, wherein a mounting member is mounted on the outside of the steel frame inside the concrete, and the reinforcing bars are reinforced through the mounting member. Base stand for equipment. 3. The base stand of the equipment according to claim 1, wherein a pedestal is attached to the steel member, and an anchor bolt for installing the equipment is attached to the pedestal. Base stand for equipment. 4. The base frame of the equipment according to claim 1, wherein a sleeve is attached to the steel frame,
A foundation pedestal for equipment, wherein an anchor bolt for installing the equipment is inserted and fixed inside the sleeve. 5. The foundation frame of the equipment according to claim 1, wherein an insertion hole is provided in the steel frame, and a washer for positioning an anchor bolt is attached to the insertion hole, and the anchor bolt is inserted into the insertion hole. A base stand for equipment, which is fixed by being inserted through holes and washers.