JPH04126143U - Concrete specimen manufacturing equipment - Google Patents

Abstract

(57) [Summary] [Structure] A bottom plate portion that is plate-shaped and has an annular upward groove on its upper surface, and a substantially cylindrical bottom plate portion that has a vertical center axis and that is removably fitted into the annular upward groove at the lower peripheral edge. A cylindrical shape having a protruding strip, which is substantially flat in a free state and has a horizontal groove on one side edge, and a transverse protruding strip removably fitted into the horizontal groove on the other side edge. Concrete specimen manufacturing equipment consisting of parts.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a device for producing concrete specimens, and more specifically, it is approximately container-shaped and A cylindrical concrete specimen is created by pouring concrete through the opening in the This invention relates to equipment for producing concrete specimens that can produce concrete specimens.

0002

[Conventional technology]

Concrete, which has traditionally been used for construction and civil engineering, is used at each construction site. When used, it is mandatory to sample a portion and conduct a compressive strength test for quality control. It is attached. For details on how to make test pieces for compressive strength testing, please refer to JIS A 1108, and JIS A 1132 for details regarding the equipment. It is stated. Currently, there are two types of utensils: those made of cast iron and those made of tin. things are used.

0003 For example, in Fig. 4, the concrete test specimen manufacturing equipment has a cylindrical part 1 made of cast metal. The cylindrical part 1 is divided into two vertically, and a connecting piece 3 is attached to each vertical side and the bottom side. 4, 5... and vertically tightened with wing screws 6, 7, 8... to form a cylindrical shape. In addition , 9 is a step portion that fits into the bottom of the combined cylindrical portion 1. In this way, when concrete is poured from the upper opening of the cylindrical part 1, a cylindrical concrete is formed. A REET specimen (height: 200mm, diameter 100mmΦ) can be manufactured, and concrete This will be used for compressive strength testing.

0004

[Problem that the idea aims to solve]

The concrete specimens obtained in this way have manufacturing equipment made of cast iron. Although it has the advantage of good dimensional accuracy and can be used many times, it is expensive and heavy. It is said that work efficiency is poor because the amount is large and it requires assembly and disassembly of thumb screws. There was a problem. Of course, if the manufacturing equipment is made of tin plate (for example, 0.25 mm thick), the cost will be lower. Although it can be made cheaper and lighter and easier to handle, it is weaker in strength, so concrete Depending on how the REIT is poured and solidified, concrete may be manufactured out of shape. There was a problem with the dimensional accuracy of the test specimen. This idea was developed in consideration of these circumstances, and was designed to improve handling workability during weighing. Our main focus is to provide equipment for manufacturing concrete specimens with high dimensional accuracy. The purpose of

[0005]

[Means and actions to solve the problem]

This idea consists of a plate-shaped bottom plate with an annular upward groove on the top surface, and a roughly cylindrical bottom plate with a vertical central axis. It is straight, and has a downward protrusion on the lower peripheral edge that is removably fitted into the annular upward groove. , in the free state, it has a substantially flat plate shape with a horizontal groove on one side edge and a horizontal groove on the other side edge. and a cylindrical part having a horizontal protrusion that is removably fitted into the horizontal groove. This is a device for manufacturing cleat specimens.

[0006] That is, in this invention, both ends of the cylindrical part are fitted together, and then the lower peripheral end of the cylindrical part is fitted. A concrete pouring container can be formed by simply fitting the edges to the bottom plate, and can be dismantled. Sometimes, the engagement between the bottom plate part and the cylindrical part is released, and then the engagement between the side edges of the cylindrical part is released. Just by doing this, the cylindrical part returns to its natural flat shape due to its own elastic force and returns to the specified position. Since the concrete specimen is obtained by dismantling it, assembly and disassembly workability is extremely good. Become good.

[0007] In this invention, the cylindrical part can be made of bent iron plate or plastic. . In the case of a steel plate, it is preferable to provide vertical ribs on the surface with a plate thickness of 0.5 to 3.0 mm. In the case of plastic, ABS, PVC, etc. can be used, and the plate thickness is 1 to 5 mm, with vertical lines on the surface. It is preferable to provide a

[0008]

【Example】

This invention will be explained below based on the embodiments shown in the figures. Note that this Ideas are not limited. First, in Fig. 1, the concrete specimen manufacturing equipment (1) is cylindrical and has a cylindrical shape. It has a concrete inlet (8), and vertical ribs (9), (9)... are densely arranged on the body surface. It consists of cylindrical parts (2) arranged in a row and a disc-shaped bottom plate part (3). This bottom plate part (3) has an annular upward groove (7) in the center. The cylindrical part (2) is approximately flat in the free state. It has a horizontal groove (5) on one side edge (10) and has a horizontal groove (5) on the other side edge (11). It has a horizontal protrusion (4) that is removably fitted into this horizontal groove (5). and The lower circumferential edge has a downward protruding strip (6) that is removably fitted into the annular upward groove (7). have Both the horizontal convex line (4) and the downward convex line (6) have thick tips and roots. The base is getting thinner. In addition, (12) is the outer leg piece of the bottom plate part (3), and (13) is the reinforcement piece. This is an inner leg piece.

[0009] The concrete specimen manufacturing equipment (1) having the above configuration is a substantially flat plate-shaped one ( (free state) is bent into a cylindrical shape and the horizontal convex strip (4) is inserted into the horizontal groove (5). By this, one side edge (10) and the other side edge (11) are connected. Next The cylindrical part (2) obtained by inserting the downwardly directed protruding stripes (6) into the upwardly directed grooves (7). It is obtained by joining the lower peripheral edge (14) to the bottom plate part (3).

0010 In this way, the concrete for testing is poured from the concrete pouring port (8). Pouring Concrete is hardened using a method based on JIS A 1108. Next, the downward convex strip (6) of the cylindrical portion (2) fits into the upward groove (7) of the bottom plate portion (3). Release the joint, and then insert the horizontal grooves (5) on both side edges (10) and (11) of the cylindrical part (2). When the horizontal protrusion (4) is released from the fitting, the elastic force of the cylindrical part (2) itself will cause the cylindrical part (2) to In order to return to the shape (free state), the created cylindrical concrete specimen , it is automatically peeled off from the cylindrical part (2) and taken out.

[0011] In this way, concrete specimen manufacturing equipment 1 can be assembled and dismantled with one touch. It is easy to work with, and can be made thinner in terms of weight and structure. In addition, the specimen In order to further increase the accuracy in the radial direction, the cut surface is closed near the center height of the cylindrical part 2 due to the structure. For example, fitting a ring-shaped object into the body or attaching a stopper, etc. It's okay.

0012

[Effect of the idea]

According to this invention, the structure is simple and the ease of assembly and disassembly is greatly improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating an embodiment of the concrete specimen manufacturing apparatus of this invention.

FIG. 2 is a partially enlarged plan view of the upper part of the cylindrical part of this embodiment.

FIG. 3 is a sectional view of a main part showing a fitted state between a cylindrical part and a bottom part of this embodiment.

FIG. 4 is an exploded perspective view showing a conventional concrete specimen manufacturing apparatus.

[Explanation of symbols]

11 Concrete specimen manufacturing equipment 12 Concrete pouring port 13 Annular downward groove 14 Upper plate part 15 Annular upward groove 16 Bottom plate part 17 Axial slit 18 Cylindrical part

Claims (1)

[Scope of utility model registration request] 1. A bottom plate having a plate shape and having an annular upward groove on its upper surface, and a substantially cylindrical bottom plate having a vertical central axis and a downward protruding strip removably fitted into the annular upward groove on the lower peripheral edge. In a free state, the tubular part has a substantially flat plate shape, has a horizontal groove on one side edge, and has a horizontal protrusion on the other side edge that is removably fitted into the horizontal groove. Concrete specimen manufacturing equipment.