JP7694287B2 - Gauge plates, their manufacturing method and equipment installation method - Google Patents

Description

The present invention relates to a gauge plate used to determine (position) the installation location of anchor bolts that secure equipment such as tanks and towers, a method for manufacturing the gauge plate, and a method for installing equipment such as tanks and towers using the gauge plate.

When installing equipment such as tanks and towers on foundations made of concrete, the equipment is fixed to the foundation by anchor bolts embedded in the foundation. The equipment is provided with multiple bolt insertion holes for inserting the anchor bolts. The anchor bolts need to be accurately positioned so that they match the positions of the bolt insertion holes. A component (jig) called a gauge plate is used to position the anchor bolts.

Patent document 1 describes a gauge plate made by assembling straight rod-shaped members into a square grid shape.

The gauge plate in Patent Document 1 is rectangular as described above, but ring-shaped gauge plates have also been used in the past. These ring-shaped gauge plates are made of iron.

The installation procedure for tanks and towers using steel gauge plates is as follows:
(1) The product is shipped from the manufacturing factory to the construction site by a 4-ton truck, and when it is received at the site, it is unloaded at a temporary storage area by a crane. (Because it is a large and heavy item, a truck and a crane are used.)
(2) Marking out the foundation for the installation of the gauge plate. Marking out involves drawing a compass mark on the foundation (installation location) to indicate the correct position according to the design drawing.
(3) Use a crane to slightly raise the gauge plate and align the markings with the gauge plate direction mark, then lower the gauge plate and place it on the foundation.
(4) After the gauge plate is installed, the anchor bolt positions are transferred to the foundation and the gauge plate is removed using a crane.
(5) Using a drill, drill holes for the anchor bolts at the positions copied in (4) and install the anchor bolts.
(6) A tank, steel tower, etc. is installed on this foundation and secured in place with anchor bolts.

Japanese Unexamined Patent Publication No. 186670/1986

Conventional gauge plates are made of iron and have the following disadvantages:
(1) Because it is heavy and large, it requires trucks to transport it. In addition, it requires cranes to set it up, and safety measures such as guards are also necessary.
(2) The material and processing costs are expensive. In the case of a ring-shaped gauge plate, a cross support is required.
(3) It is a heavy iron object and the disposal cost after use is high.

The objective of the present invention is to solve these problems and provide a gauge plate that is lightweight, soft, inexpensive, and easy to dispose of, as well as a method for manufacturing the same and a method for installing equipment using the gauge plate.

The gauge plate of the present invention is used to position anchor bolts for fixing equipment during equipment installation work, and is characterized by being made of a soft resin sheet.

In one aspect of the present invention, small holes are provided at positions corresponding to the anchor bolt positions.

In one aspect of the present invention, multiple sheets of material are joined together to form a sheet of a specified size.

In one embodiment of the present invention, the resin is PET, PE, PP, or PVC.

The method for manufacturing a gauge plate of the present invention is characterized in that a soft resin sheet is placed on the flange of the equipment, a line is drawn on the sheet along the periphery of the flange, and marks are made at predetermined positions corresponding to the bolt insertion holes of the flange.

In one aspect of the present invention, a small hole is provided as the mark.

In one aspect of the invention, information regarding the diagram or orientation of the device is written or pasted.

The equipment installation method of the present invention is a method for installing equipment using the gauge plate of the present invention, and is characterized in that the gauge plate is installed at the intended location for installing the equipment, holes for anchor bolts are drilled, anchor bolts are erected, the equipment is installed, and fixed with the anchor bolts.

The gauge plate of the present invention is lightweight and soft, and the resin sheet can be rolled up for transportation, making it easy to transport. For example, it can be used on mixed-loading flights. Since it can be easily transported by hand, no cranes or safety auditors are required.

The gauge plate of the present invention is made of a resin sheet, so both the material and processing costs are low and it can be easily disposed of as plastic waste. By attaching a drawing to the sheet, work can be done using only the sheet.

When the resin sheet is made of PET or other materials, it has high tensile strength and is water resistant, so it can be used without problems even when exposed to rain. It is almost completely free of thermal deformation, so it can be left outdoors.

Sheets such as PET are transparent and can be compared with the markings on the foundation.

FIG. 2 is a plan view of the gauge plate according to the first embodiment. FIG. 10 is a plan view of a gauge plate according to a second embodiment.

The following describes the embodiment with reference to the drawings.

Figure 1 is a plan view showing a gauge plate according to the first embodiment. This gauge plate 1 is made of a sheet 2 made of soft resin. This gauge plate 1 is used when fixing the flange at the bottom of equipment such as a tank or tower to a foundation. In this embodiment, the flange is in the form of a ring-shaped plate, and bolt insertion holes are provided at equal intervals around the circumference, for example at 12 equal intervals.

The sheet 2 has a large circular line 3 with a diameter substantially the same as the outer peripheral edge of the flange, and a small circular line 4 with a diameter substantially the same as the inner peripheral edge of the flange. The lines 3 and 4 are concentric circles. Small circular holes 5 are provided at positions that overlap with the bolt insertion holes. A first diametric line 6 and a second line 7 perpendicular to the first line 6 are also drawn.

Line 3 can be drawn by overlapping sheet 2 and the flange and moving a permanent marker along the outer periphery of the flange, and line 4 can be drawn by moving the permanent marker along the inner periphery of the flange. Small hole 5 can be formed by drawing a small circle by moving a permanent marker along the inner periphery of the bolt insertion hole in the flange, and then cutting it out using a cutter or punch blade.

Lines 6 and 7 pass through the center of circular lines 3 and 4. These lines 6 and 7 can be drawn using a ruler and permanent marker.

In Figure 1, a line 4 is drawn that corresponds to the inner edge of the flange, but when personnel cannot enter the inside of the tank, etc., the line 4 may be omitted.

In the present invention, the name of the equipment installed using the gauge plate 1 and the orientation of the gauge plate may be written on the sheet 2. Also, a display such as a piece of paper depicting an assembly diagram of the equipment may be affixed to the sheet 2. An example of this is shown in Figure 2.

In gauge plate 1' in Figure 2, the name of the equipment and its direction (not shown) are written inside frame line 8. In addition, a display 9 such as a piece of paper with a drawing drawn on it is attached. The rest of the configuration of gauge plate 1' is the same as that of gauge plate 1.

The resin for the sheet 2 is preferably PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene), PVC (polyvinyl chloride), etc. (especially PET), and PET is particularly preferred .

PET, PE, PP, or PVC sheets of this thickness are transparent and flexible enough to be rolled by hand.

The sheet 2 may be a single piece, but when the device is large, it may be made up of two or more sheets joined together by gluing the edges together with an adhesive or the like.

The procedure for installing equipment using this gauge plate 1 or 1' will now be described.
(1) First, the gauge plate 1 or 1' is manufactured, then rolled into a cylinder and preferably housed in a cylindrical case.
(2) The gauge plates are shipped to the construction site from the manufacturing factory in a mixed load service, and when they are received at the site, they are unloaded manually into a temporary storage area. The gauge plates are lightweight and rolled up to be compact, making them easy to transport and unload.
(3) Mark the foundation to install the gauge plate.
(4) Manually align the markings and gauge plate direction markers and install them.
(5) After installing the gauge plate, transfer the anchor bolt positions onto the foundation. For example, mark the foundation with a permanent marker through small holes 5.
(6) The gauge plate is removed by hand. The removed gauge plate is no longer needed and is disposed of as plastic waste.
(7) Use a drill to make holes for the anchor bolts at the marked locations.
(8) The equipment is installed and fixed with anchor bolts. That is, for example, concrete anchor bolts are driven into the holes, the anchor bolts are inserted into the bolt insertion holes of the equipment, and nuts are fastened to the anchor bolts via washers.

In this way, the gauge plate 1 or 1' can be easily transported on mixed cargo flights by rolling it into a cylindrical shape. It can also be easily carried by hand. Furthermore, the installation work of equipment using the gauge plate can be carried out quickly and safely. By attaching drawings to the sheet, it becomes possible to carry out the work using only the sheet.

The material and processing costs for this gauge plate are both low, and it can be disposed of as plastic waste.

When the sheet 2 of this gauge plate 1 or 1' is made of PET, PE, PP, or PVC, it has high tensile strength and is water resistant, so it can be left out in the rain without any problems. It also has almost no thermal deformation, so it can be left outdoors. The sheet 2 made of PET or other materials is transparent, so it can be compared with the markings on the foundation.

The above embodiment is an example of the present invention, and the present invention is not limited to the above embodiment. For example, the sheet is rectangular in the above embodiment, but is not limited to this. Also, the lines 3 and 4 are circular, but are not limited to this.

1, 1' Gauge plate 2 Sheet 3, 4, 6, 7, 8 Line 5 Small hole 9 Marking

Claims (6)

A method for manufacturing a gauge plate made of a soft resin sheet and used for positioning an anchor bolt during installation of equipment such as a tank or tower, the gauge plate having a flange portion with an anchor bolt insertion hole , comprising:
A method for manufacturing a gauge plate, comprising the steps of: placing the soft resin sheet on the flange portion; drawing a line on the soft resin sheet along the periphery of the flange portion; and marking predetermined positions corresponding to the anchor bolt insertion holes of the flange portion . 2. The method of claim 1, wherein said markings are small holes. 3. The method for manufacturing a gauge plate according to claim 1 , wherein said soft resin sheet is formed by joining a plurality of sheets of material together to form a soft resin sheet of a predetermined size. 4. The method for manufacturing a gauge plate according to claim 1, wherein the soft resin is PET, PE, PP, or PVC. 5. The method for manufacturing a gauge plate according to any one of claims 1 to 4, further comprising the step of writing or attaching a drawing or information regarding the orientation of the device. A method for installing equipment comprising a tank or tower using a gauge plate manufactured by the method for manufacturing a gauge plate according to any one of claims 1 to 5 , comprising the steps of:
A method for installing equipment, comprising the steps of: installing a gauge plate at a location where the equipment is to be installed; drilling holes for anchor bolts at the positions of the marks and erecting anchor bolts; installing the equipment ; and fixing the equipment with the anchor bolts.

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