JPS6032211Y2 - Foundation for equipment installation - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] This invention relates to the foundation for equipment installation.

[Prior Art] and [Problems to be Solved by the Invention] Conventional equipment installation foundations include burying a liner made of carbon steel material in a grout foundation made of non-shrink mortar, and placing the upper surface of this liner in the grout foundation. Efforts were made to ensure that the sole plate of the equipment or the bottom of the plywood adhered to the grout base surface and the top surface of the liner.

Here, iron powder hole non-shrink mortar prevents the shrinkage of the iron powder as a whole by expanding it through rusting, and has the advantages of a small amount of shrinkage and a fast hardening speed. There was a problem in that rusting was significantly accelerated on the liner in the grout, the sole plate, or the bottom surface of the plywood.

In the case of non-iron powder-based non-shrink mortar, the same tendency was observed although there were differences in the degree of rust formation.

In addition, when the sole plate or the bottom of the plywood is brought into close contact with the grout foundation and liner, there may be problems such as pleating, poor fluidity, shrinkage, or cracks in the grout between the sole plate, the bottom of the plywood, or the support such as the liner and the grout foundation. There is a risk of creating a very small gap.
The inventor's long-term research has revealed that when the gap force is between 2 and 0.3, rusting of the carbon steel sole plate or plywood bottom is further accelerated.

The mechanism of rust formation caused by these minute gaps has not been fully investigated at present, but due to the capillary phenomenon in the minute gaps, the moisture in the grout stays on top of the gap for a long time using air as a medium. This is considered to be the main cause.

If rust occurs on the sole plate or the bottom of the plywood, the rust will push up the sole plate, impeding the levelness of the sole plate, and naturally causing increased vibration and level displacement due to changes in the axis. This could lead to serious accidents such as contact between rotating bodies or breakage of anchor bolts.

This idea was devised based on the above-mentioned research results in order to solve these conventional problems, and to provide a foundation for installing equipment that can prevent deterioration of the levelness of the sole plate due to rusting. With the goal.

[Means for solving problems]

In order to achieve the above-mentioned purpose, the equipment installation foundation according to this invention has a sole plate or a base plate of the equipment, and a liner for adjusting the height is fitted under the foot part protruding from the bottom of the base plate. The grout foundation is placed on the top and fixed to the foundation body with anchor bolts, and is formed by pouring a grout foundation up to a height that reaches the lower end of the foot, and the grout foundation is made of at least cement-based non-shrink mortar and ordinary mortar. At least the lower end of the liner and the foot section buried in the grout foundation are formed of stainless steel, and the distance between the surface of the grout foundation and the bottom surface of the sole plate or plywood is 3wIt or more. It is characterized by the fact that it is

[Effect]

With this configuration, the grout foundation is formed using at least one of cement-based non-shrink mortar and ordinary mortar, and the liner buried in the grout foundation and the lower end of the foot are formed of stainless steel. Since the distance between the surface of the grout foundation and the bottom of the sole plate or plywood is set to be 3m+++ or more, it prevents moisture from accumulating between the sole plate or base plate. No accumulation occurs, and rusting of the sole plate etc. caused by this is prevented, and deterioration of levelness caused by rusting is prevented.

〔Example〕

Next, an embodiment of the equipment installation base according to this invention will be described based on the drawings.

The foundation for equipment installation is formed by forming a pad part 2 made of cement-based non-shrink mortar on the base body 1, fixing a flat liner 3 while adjusting the ceiling height with this pad part 2, and fixing the flat liner 3. Taper liners 4a and 4b placed thereon form a liner that adjusts the height, and a liner is provided on the liner that protrudes from the bottom of a sole plate or plywood (hereinafter collectively referred to as sole plate) 6 of the device. The sole plate 6 is supported by placing the foot portion 5 thereon.

And flat liner 3 and taper liner 4 a,
4b and the lower ends of the foot portions 5 are buried and held in a grout foundation 9 cast using ordinary mortar or cement-based non-shrink mortar.

In addition, before placing the grout foundation 9, taper liner 4a4
The height of the upper surface of the sole plate 6 is adjusted by relatively sliding b.

Further, the liner is not limited to the one shown in the drawings, and it goes without saying that well-known liners such as stacked flat liners can be used.

Attach nut 8 to anchor bolt 7 from above sole plate 6.
are screwed together, thereby fixing the sole plate 6 to the base body 1.

Each liner: 3t 4at 4b and the foot portion 5 are made of stainless steel, and the cement-based non-shrink mortar and ordinary mortar forming the grout foundation 9 are less prone to rusting.

Therefore each liner 3? 4at 4b and the foot portion 5 are completely prevented from rusting.

A foot portion 5 made of blood steel and having a height of about 30 mm is welded to the bottom surface of the sole plate 6, and the lower end portion of the foot portion 5 is made of stainless steel and the upper portion is made of carbon steel.

Therefore, the portion of the foot portion 5 that may come into contact with the grout foundation 9 is made of approximately 10+yo++ stainless steel, and is completely prevented from rusting.

However, the leg portion 5 may be made of solid stainless steel instead of blood steel.

The height of the grout foundation 9 is within the range of the thickness of the stainless steel of the foot 5 upward from the contact surface between the upper surface of the upper taper liner 4a and the lower end of the foot 5.

That is, the bottom surface 10 of the sole plate 6 and the grout foundation 9
The interval between the upper surfaces 11 is set to be approximately 20 (mm), which is sufficiently wide.

As a result, there is no risk of moisture accumulation due to capillary action between the bottom surface 10 and the surface 11, and rusting on the bottom surface 10 can be completely prevented.

Therefore, there is no possibility that the levelness will deteriorate due to rusting on the bottom surface 10 of the sole plate 6.

When constructing the foundation for equipment installation, the pad part 2 is cast on the foundation body 1, the flat liner 3 is installed on the pad part 2, and the sole plate 6 is further placed on top of the flat liner 3 via the tapered liners 4a and 4b. After ensuring horizontal accuracy and height by relative sliding adjustment of the taper liners 4a and 4b, the sole plate 6 is fixed by screwing the anchor bolt crane nut 8 together.

Here, a formwork is arranged around the sole plate 6, and a grout foundation 9 is poured.

Moreover, if the grout foundation 9 is formed with cement-based non-shrink mortar instead of ordinary mortar, the construction period can be shortened.

Experiments have shown that rust can be reliably prevented if the distance between the bottom surface 10 of the sole plate 6 and the grout surface 11 is approximately 3 [in order] or more, and if a sufficiently large tolerance is taken into consideration. In practice, good results have been obtained by setting the value to about 10 to 27.

[Effect of idea]

As explained above, the device installation foundation according to the present invention has the excellent effect of preventing deterioration of the levelness of the sole plate due to rusting due to the above-described action.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view showing an embodiment of the equipment installation foundation according to this invention. 1... Basic body, 2... Pad part, 3
...Flat liner, 4 ... Taper liner, 5 ... Foot section, 6 ... Sole plate or base plate, 7 ... Anchor bolt , 8...
... Anchor bolt crane nut, 9 ... Grout foundation, 10 ... Bottom of curved sole plate, 11 ...
...Top surface of grout foundation.

Claims (1)

[Scope of utility model registration request] The sole plate or plywood of the equipment is placed on the base body with a liner that adjusts the height placed under the feet protruding from the bottom of the equipment, and fixed to the base body with anchor bolts, and the feet The grout foundation is formed by pouring a grout foundation to a height that reaches the lower end of the section, the grout foundation is formed using at least one of cement-based non-shrink mortar and ordinary mortar, and the liner buried in the grout foundation and the A foundation for installing equipment, characterized in that at least the lower end of the foot portion is formed of stainless steel, and the distance between the surface of the grout foundation and the bottom surface of the sole plate or plywood is 3wn or more.