JPH0434143A - Spacer for civil work - Google Patents

Abstract

PURPOSE:To enhance the working efficiency for levelness formation by forming a space whose thickness is displaced by a determined value or more at the time of adding a determined load per determined area, with a synthetic resin into a flat plate, and providing a size indication and locking holes on the upper surface thereof. CONSTITUTION:A spacer 5 is formed into a flat plate by injection molding of polypropylene synthetic resin. It is formed so that the thickness is displaced by about 0.5mm or more when a load exceeding about 4 tons per about 100cm<2> is added thereto. A size indication 9 and locking holes 10 gradually reduced in diameter from the upper surface 5a toward the reverse side are provided on the four corner upper parts of the spacer 5. A plurality of spacers 5 having different thicknesses are prepared, the space between the placing surface 3 of a part subjected to placement and a horizontal surface P is measured to insert a determined number of the spacers to a determined part, and then levelness is determined, and nails 11 are driven into the locking holes 10 to fix the spacer. The placing surface 3 and the horizontal surface P can be easily made parallel to each other.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to civil engineering work which is interposed between a placing member for concrete products etc. and a placing part on which the placing member is placed. This relates to spacers.

[Prior art and problems to be solved by the invention] Generally, when installing concrete products such as U-shaped grooves, first,
A placement part is provided on the ground, and then the concrete product is placed on this placement part.

By the way, since this mounting part is provided by sequentially depositing chestnut stone, waste concrete, etc. on the ground, there is a problem in that it is difficult to accurately obtain the horizontal state of the mounting surface on which the concrete product is placed. Ta.

Therefore, conventionally, a metal plate having a predetermined thickness has been interposed as a spacer between the above-mentioned mounting surface and the concrete product.

However, since the spacer is formed by a shearing metal plate, it is heavy and the work efficiency is greatly reduced. Also, the spacer must be manufactured with various thicknesses depending on the horizontal state of the mounting surface, so it is difficult to process. The problem is that it is time consuming and increases manufacturing costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a spacer for civil engineering work that improves work efficiency, reduces manufacturing time, and can be manufactured at low manufacturing cost.

[Means for Solving the Problems] In order to solve the above objects, the present invention provides 100 cr
The whole is formed into a flat plate shape of synthetic resin so that the thickness only changes by 0.5 mm or more when a load of 4 tons or more is applied per j, and at least a part of it has dimensions indicated,
A means provided with a locking part that can lock the connecting means to at least one of the mounting part and the mounting member is adopted.

[Function] With the above structure, the spacer for civil engineering works is lightweight and has sufficient strength, and the thickness can be easily determined by the dimension display provided on a part of it. The connection to at least one of the section and the mounting member is easily performed.

[Example] Hereinafter, an example in which the present invention is applied to a U-shaped groove installation site will be described with reference to FIGS. 1 to 4.

A placement part 2 is provided on the ground l, and a placement surface 3 on the upper surface thereof.
A U-shaped groove 4 made of concrete as a mounting member is placed in the spacer through a plurality of spacers 5 for civil engineering work (hereinafter simply referred to as spacers 5).

The placement portion 2 is formed by sequentially depositing a chestnut stone 6 placed on the top surface of the earth 1 and a comma placed on the top surface. The mounting surface 3 of the mounting portion 2 is formed to be inclined downward to the right with respect to the horizontal plane P (as shown in FIG. 1) due to the slope of the ground 1 or the like.

Therefore, the spacer 5 interposed between the U-shaped groove 4 and the mounting surface 3 is provided at both the front and rear ends of the U-shaped groove 4 (referring to the left and right direction in FIG. Therefore, the number of overlapping sheets increases from two to three, and the U-shaped groove 4 is always placed parallel to the horizontal plane P.

Note that empty mortar 8 is filled between the spacers 5 interposed at both the front and rear ends.

Next, the spacer 5 will be explained. As shown in FIG.
A dimension indication 9 of the thickness (for example, if the thickness is 5 mm, the indication is 5) is written.

In this embodiment, since a grain pattern (not shown) is formed on the upper surface 5a and the back surface of the spacer 5, the dimension indication 9 is formed at the same time during the injection molding without forming the grain pattern.

Further, the spacer 5 has a weight of 4 tons per 100cnf.
The thickness reaches 0゜5m+++ when a load of more than
It is formed so that it can be displaced by more than In this compressive load test, the test specimens were 10 x 10 cm in size and 2.0, 3.0, 5.0+ nm in thickness, and after injection molding, they were molded at a temperature of 20+2°C and a humidity of 30+5% for 24 hours. I used the one after it had been left alone. The reason for setting the load to be 4 tons or more is that if the displacement is 0.5 mm or more under a 4 ton ungrooved load, the compressive deformation will be too large to withstand actual use.

At the same time as the injection molding, a locking hole lO is formed in the four sides of the spacer 5 as a locking portion whose diameter gradually decreases from the top surface 5a toward the back surface, and as shown in FIG. The spacer 5 can be connected to and fixed in position by driving a nail 11 as a connecting means into the mounting portion 2 through the locking hole IO.

Next, how to use the spacer 5 configured in this way will be explained.

First, a plurality of types of spacers 5 having different thicknesses such as 2, 3, 5, and 10.15 mm are prepared. Next, the distance between the placement surface 3 of the placement portion 2 and the horizontal surface P is measured, and the number of spacers 5 having the thickness of Ayo required for the distance is calculated. Then, the number of spacers 5 is placed on a predetermined portion of the placement surface 3, and the nails 11 are driven into the spacers 5 to connect them to the placement portion 2 and fix the spacers in position. Thereafter, when the U-shaped groove 4 is placed, the U-shaped groove 4 is placed parallel to the horizontal plane P, as shown in FIG.

In this manner, according to this embodiment, the mounting surface 3 of the mounting portion 2 can be easily made parallel to the horizontal surface P by preparing a plurality of types of spacers 5 having different thicknesses.

Further, since the spacer 5 is made of polypropylene synthetic resin, the spacer 5 itself can be made light, and working efficiency can be significantly improved, and it can be manufactured at low manufacturing cost.

Further, since a dimension display 9 indicating the thickness of the spacer 5 is provided on the upper surface 5a of the spacer 5, the thickness of the spacer 5 can be known by looking at the minus mark.

Further, since the locking holes 10 are provided in the four sides of the spacer 5, the spacer 5 can be easily connected to the mounting portion 2 and fixed in position with the nails 11 or the like.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be modified and embodied as shown below, for example.

(1) In the embodiment described above, the locking holes 10 were provided only on the four sides of the spacer 5, but as shown in FIG. 5, the locking holes 10 may be provided throughout the spacer 5. In this way, attachment of the spacer 5 to the receiving portion 2 can be set arbitrarily.

(2) In the embodiment described above, the dimension display 9 was provided only on the front surface 5a of the spacer 5, or may be provided on the entire back surface or side surface. In this way, the thickness of the spacer 5 can be determined more easily.

(3) In the above embodiment, the material of the spacer 5 is polypropylene synthetic resin, but it is not limited to this, and any synthetic resin may be used as long as it satisfies the above-mentioned values.

(4) In the above embodiment, the spacer 5 is connected to the receiving portion 2 to be positioned and fixed, but the spacer 5 may be connected to the U-shaped groove 4 to be positioned and fixed. .

(5) In the above embodiment, the case where the U-shaped groove 4 made of concrete is installed has been explained, but it is not limited to this, and even if it is made of something other than concrete,
Moreover, it may be embodied in articles other than the U-shaped groove 4.

[Effects of the Invention] As detailed above, according to the present invention, work efficiency can be significantly improved, manufacturing time can be shortened and manufacturing can be carried out at low cost, and thickness confirmation and mounting This provides an excellent effect in that connection to at least one of the placing section and the placing member can be made very easily.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a front sectional view of FIG. An enlarged sectional view, FIG. 4 is a front view showing the spacer, and FIG. 5 is a front view showing the spacer separately. U-shaped groove 4, spacer for civil engineering work 5, dimension display 9, locking hole 10, nail 11゜Patent applicant Masami Hitoshi

Claims (1)

[Claims] 1. A spacer (5) for civil engineering work interposed between a mounting member (4) for concrete products, etc. and a mounting part (2) on which the mounting member (4) is mounted. , 100cm^
The whole is formed into a flat plate of synthetic resin so that the thickness will only shift by 0.5 mm or more when a load of 4 tons or more is applied per 2, and at least a part of it is marked with dimensions (9
) and a locking part (1) that can lock the connecting means (11) to at least one of the placed part (2) or the placing member (4).
0) A spacer for civil engineering work, characterized in that it is provided with.