JPH0369723A - Method of installing machine - Google Patents

Abstract

PURPOSE:To install a machine in a short period by a method wherein resin grout mixed with aggregate is first placed on a concrete foundation, resin having a low viscosity is then placed, and after levelling is effected, a machine is installed. CONSTITUTION:One-stage grout prepared by mixing aggregate consisting mainly of quartz sand in thermosetting resin is placed in a thickness of 20-100 mm on a foundation concrete surface, and aggregte-free resin having a low viscosity is placed in a thickness of 10 mm or less. By embedding anchor bolts in a spot where one-stage grout is placed, a machine conveyed to a site can operate only by fastening the anchor bolts. Further, in the case of a machine generating heavy vibration, an adhesive with a thickness of tens micron is used, and the machine, resin, and foundation concrete are integrally built. This method improves toughness and oil resistance, and can execute a work the terms of which is sharply reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION A) Field of Industrial Application The present invention relates to a method for installing machines. More specifically, we can quickly and effectively install machines based on an idea completely different from conventional machine installation methods.

Its purpose is to install machinery, and its range of applications is wide-ranging.

Mouth) Conventional technology When installing two conventional machines.

■ Simply place the machine on the floor.

■ Anchor bolts are buried in the floor in advance, and when one machine is installed, two machines are fixed with anchor bolts.

■ Establish a concrete foundation higher than the floor and secure the machine with anchor bolts buried in the concrete foundation.

The following three methods are common.

However, if a machine like ■, which is simply placed directly on the floor, does not cause vibration, does not become distorted even after long-term use, or is it cheap enough to withstand short-term use? Either. Therefore.

Machines with simple installation methods such as (2) are not covered by the present invention.

Many machines need to be installed on a horizontal surface.

The first condition for installation is to securely fix it using the anchor bolts that have been buried in advance. Furthermore, it is technically extremely difficult not only in the past, but even now, to keep the surface of a floor or concrete foundation level with such precision as mentioned above. Such operations are necessary.

a. Place a steel base plate on hard cement mortar or resin mortar that does not cause flow, adjust the height of the plywood surface with a hammer, etc., then set up the machine and place the machine on the steel base. A single-walled steel spacer called a taper liner is driven between the plates to keep the machine horizontal.

b00 Level the machine using the push bolts installed on the machine body, or level it with a steel base plate equipped with push bolts, and then install the machine on it.

There are two ways.

After that, hard kneaded mortar (hereinafter referred to as pad),
The gap created by the tapered liner or push bolt is generally filled with a filler called grout.

The conventional installation method for concrete machines is carried out in the following manner and order.

1) Hardening and curing of foundation concrete 2) Removal of weak parts on the surface of foundation concrete 3) Making pads 4) Hardening and curing of pads 5) Installation of mechanical equipment 6) Adjustment of horizontal plate of mechanical equipment (a, taper liner b.

(or push bolt method) (7) Filling the hole of the anchor bolt with grout (hereinafter, the grout filled in the hole of the anchor bolt is referred to as anchor grout) (8) Hardening and curing of the anchor grout (9) Machine horizontal adjustment α ■ type Frame seal αυ grout filling 02) Grout curing 0 turbidity The machine is installed after a very complicated process and sequence such as retightening the anchor bolt, but here, if the surface on which the machine is installed is horizontal in advance The process can be significantly shortened because the preparation of the pad, its curing, and the adjustment of nine horizontal plates are completed in one process. At the same time, a recent trend is that the number of workers skilled in leveling machines is decreasing year by year, which has become a major problem, but as long as the two methods of the present invention are adopted, these problems can be solved.

In the conventional method, a pad is required to receive these in advance, whether it is a tapered liner or a push bolt. Pads are complicated by having to be molded with hard-mixed cement or resin mortar and allowed to harden, and they also have the major drawback of having to pour grout after leveling and wait for it to harden. .

C) Problems to be Solved by the Invention As mentioned above, it is difficult to keep the surface of a floor or concrete IJ-foundation smooth due to curing shrinkage, which is an inherent drawback of concrete. At the same time, sizing concrete foundations is still difficult.

On the other hand, the machining accuracy of the nine machines is so high that it cannot be compared to that of concrete. Therefore.

If a machine is installed directly on a concrete foundation, there will always be a gap. For this reason, after the nine aircraft were lifted up and leveled during installation, a filler called grout was poured into the gaps. In this way, with conventional construction methods, it is necessary to create a pad, cure it, and then align the horizontal plate of the machinery, and then wait for the grout to be poured and cure it, which takes a lot of time from the time one machine is brought in to its operation. It cost.

This has the huge advantage of being able to bring in two machines and install them at the same time if a highly accurate, horizontal and strong molded product is prepared on the foundation concrete before the machines are brought in. For example, when constructing, replacing, or repairing machines such as generators, engines, and combustors at large oil complexes or power plants, which are equivalent to the heart of a human being, this becomes a hanno-. The conventional construction method not only took time to create and harden the pad, but also had the major drawback that leveling and grouting could only be done after two machines had been brought in.

2) Means for solving the problem The present invention was invented to solve the above-mentioned drawbacks of the conventional fx construction method. 1. The resin used in the present invention is liquid at room temperature and hardens. Epoxy and acrylic can be made into strong materials by using agents.

This refers to thermosetting resins such as polyester, urethane, and furan, and in the case of resin grout containing aggregate (hereinafter referred to as 1-stage grout), or when filling large gaps, it refers to aggregate-containing resin grout whose main component is silica sand, etc. Mix the materials. These resins have extremely high mechanical strength compared to cement-based materials and also cure quickly, which are essential reasons for their use in the present invention. Aggregate suppresses curing shrinkage of resin, and
It works to increase the elastic modulus of the material and at the same time suppress creep. However, blended systems containing a large amount of aggregate have poor fluidity and are therefore not suitable for pouring into narrow gaps. Furthermore, if the resin itself does not have a low viscosity at room temperature, it is not suitable for pouring the resin into narrow gaps, when pouring the resin over two surfaces to obtain a horizontal surface, or when mixing aggregate, as the fluidity will be significantly poor, and single-stage grouting is not suitable. It can only be used for

The thickness of the first stage grout is preferably 20=10C)+i+.

If it is less than 20mm, it will be weak when subjected to bending load from a machine, and if it is more than 100++n, the material price will increase and it will be uneconomical. The appropriate viscosity of the resin without aggregate mixed therein is 10,000 centipoise or less, preferably 5,000 centipoise or less, as measured by a Prunochfield viscometer. For 1-stage grout, the mixing ratio of aggregate is 2 when resin is 1 by weight.
As mentioned above, it is preferable that the number is 5 or more in order to minimize creep and curing shrinkage and to reduce the unit price of the material, and the weight of the aggregate is 8 times or less than that of the resin.
Preferably, it is 7 times or less.

Using this compounding system, first one stage of grout is placed at a predetermined thickness, and in order to shorten the time by 9 hours, a low viscosity resin is poured in at a thickness of 1Qii+ or less without waiting for complete hardening to obtain a horizontal surface. . The anchor bolts can be buried in advance where the first stage of grout will be placed, or after the grout and resin have hardened, the holes are drawn and the anchor bolts are buried.
Fill and harden grout with the same composition as the stage grout. Using this construction method, the machine can be brought into operation immediately by simply tightening the anchor bolts. In this case, in the case of machines with strong vibrations or machines that require strict dimensional accuracy for a long period of time, it is possible to bond the two machines and the resin using an adhesive several tens of microns thick. By integrating the concrete, it is possible to transmit the vibrations generated by the 9 machines to the foundation and dampen the vibrations within the foundation concrete. On the other hand, if adhesives are not used, production lines require frequent changes to equipment.

Unlike conventional methods, there is no need to perform complicated installation methods every time equipment is replaced, and the machine can be installed by simply cutting off used anchor bolts and burying new anchor bolts, reducing installation costs. The benefit is that the reductions will be quite large.

E) Functional grouts have conventionally been classified into two types: inorganic grouts and organic grouts.Inorganic grouts refer to cement grouts, and organic grouts are often based on epoxy resins. Currently, cement grout is overwhelmingly popular due to the price relationship between the two.

Lacks oil resistance. Causes neutralization and rusts the machine. @
Due to disadvantages such as poor adhesion to materials, low mechanical strength, and long curing time, the amount of organic grout used has increased significantly.

The present invention could not exist without the red resin grout having these drawbacks. Resin grout is oil resistant.

In addition to not having disadvantages such as carbonation, it not only has 10 times or more adhesion to steel materials than cement grout, but also has compressive strength that is approximately twice as strong as cement grout, and bending strength that is several times as strong. It is about half. What are the drawbacks of these resins?

Creep was large compared to cement-based materials, but this could be avoided by mixing a large amount of aggregate mainly composed of silica sand.

If such a resin grout can be used to create a cast product that is precise and strong both in height and horizontally on the foundation concrete using a simple method, or a horizontal steel base plate using the cast product, two machines will be required. It is possible to revolutionize installation so much that it can be called a revolution in installation. Among various machines, for machines that make two rotations in reciprocating motion, even if the horizontal position of one machine is off by a few hundred microns or even a few tens of microns, eccentric force is applied to the shaft and it often breaks, and at the same time, the forging press Machines that undergo reciprocating motion with such severe impact require a solid foundation. For example, in the case of diesel engines, etc., not only the reciprocating motion but also the lubricating oil often deteriorate the foundation concrete and cement grout and cause them to become unlevel, so grout with excellent precision and oil resistance is required. .

Conventionally, due to the required performance of such strict installation,
The complicated and long-term installation method described above has been adopted. Furthermore, when the production equipment is frequently changed, not only is it necessary to level the machine each time the equipment is replaced, but the grout must also be replaced each time.

The construction method of the present invention makes it possible to solve these problems all at once.

f) Example Next, the method of the present invention will be explained using specific examples.

The main ingredient of the resin is bisphenol A diglycidyl ether,
Bisphenol F diglycidyl ether.

Alternatively, it can be obtained by adding butyl glycidyl ether, glycol di- or monoglycidyl ether to an epoxy base resin having a molecular weight of 300 to 500, such as alicyclic diglycidyl ether or polyglycol diglycidyl ether. If the addition is less than 5%, the viscosity will be high.

The self-leveling property is low, and if it exceeds 40%, the mechanical strength of the cured product is low, so 5 to 40% is preferable. Also,
Curing agents include aliphatic amines, alicyclic amines, aromatic amines,
Alternatively, it can be obtained by adding 0.5 to 10% of tertiary amine to these derivatives and a mixture thereof. Tertiary amine is a catalyst that improves the physical properties of cured products.
The effect is low below 5%.

IC) 4 or more is not preferable because it conversely deteriorates the physical properties.

In addition, the aggregate used is a mixture of silica sand of various sizes, and a silane coupling agent is added to this.

Alternatively, organic titanates, pigments, etc. are added.

Hereinafter, the resin without aggregate used in the examples and the resin grout containing aggregate (1-stage grout) Table 1 In the example, a horizontal surface was obtained on the foundation concrete by the following steps. Prepared for machine installation.

■ Excavate the foundation concrete in an area that matches the machine pedestal and to a depth of 5 (hw), and remove the excavated concrete with a dust collector.

■Position the anchor bolt and drill the hole.

■Pour aggregate-containing resin grout into the excavated foundation concrete to a thickness of 47mm, and press the surface with a trowel to make it level.

■After several hours, the resin grout surface gradually hardens.

When the fluidity is completely lost, aggregate-free resin is poured onto the surface of the first stage grout to a thickness of about 3yIII.

■ Approximately two days after pouring the resin, a cast material with the above-mentioned physical properties is obtained in the basic concrete.

Therefore, the machine can be operated by simply tightening the anchor bolts immediately after transporting the machine.

Next, a conventional installation process will be described as a comparative example.

(Comparative example) ■Remove the laitance on the concrete surface with a chino par. -Remove the excavated concrete with a dust collector.

■Position the anchor bolt and drill the hole.

■Install anchor bolts.

■Make a pad with a resin to aggregate ratio of 1:9 by weight, place a steel base plate on it, and adjust the height with a hammer.

■Pad curing ■Machine installation ■Perform temporary horizontal adjustment using push bolts.

■ Fill with anchor grout.

■Anchor grout curing ■Horizontal water adjustment 0 Assemble a wooden formwork around the machine.

■Seal the corners of the formwork with sealant.

0 Sealant curing Fill the 0 formwork with resin grout containing aggregate.

[Phase] Hardening of grout in formwork ■Remove the formwork and retighten the anchor bolts.

Below, the required time and steps of Examples and Comparative Examples will be compared.

g) Effects of the Invention The present invention has a machine installed using two or more methods, and has the following unique effects as seen in the Examples and Comparative Examples.

(a) 2 strong and oil resistant on top of basic concrete.

In addition, a cast product with a highly accurate horizontal surface can be obtained by simply tightening the anchor bolts after transporting the machine.

It is possible to operate the machine directly.

(b) The process is shorter than the conventional installation method.

It takes about 1/3 of the time.

(c) By using adhesive on the surface of the finished resin, even if the machine involves intense reciprocating or rotating motion, the two machines and the foundation concrete can be integrated, and all vibrations will be transmitted to the concrete, which has excellent damping effects. be able to.

On the other hand, when adhesive is not used, the installation of the machine is completed by simply cutting two anchor bolts for mechanical equipment that is frequently replaced and then burying new anchor bolts.

As described above, the present invention has many advantages that are far superior to conventional installation methods.

give great benefits It is something that can be achieved.

Claims (3)

[Claims] (1) When installing the machine on a concrete foundation,
A machine installation method characterized by first placing resin grout containing aggregate, then pouring low-viscosity resin to create a horizontal surface, and then installing the machine. (2) The thickness of resin grout containing aggregate is 20 to 10
2. The method for installing a machine according to claim 1, wherein the diameter is 0 mm. (3) The machine installation method according to claim 1, wherein the low-viscosity resin poured to form a horizontal surface has a thickness of 10 mm or less.