JPH0465176B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water channel component for constructing an open water channel such as a U-shaped gutter or an L-shaped channel, and a molding frame device for molding the water channel component.

When constructing a U-shaped gutter or an L-shaped waterway, the waterway or gutter is constructed by arranging preformed short concrete members with a U-shaped or L-shaped cross section in close contact with each other in a line. If the members are not connected to each other and the ground subsides unevenly after construction, each member will move separately as the ground changes, resulting in
There was a risk of damage to the waterway.

Therefore, conventionally, in order to avoid such damage, a male mold and a female mold are formed on the end face of each member, and the male mold and female mold of each member are fitted into each other during waterway construction. In some cases, a pressure-type connection method is adopted in which each member is integrated, or a metal-fitting connection method is used in which each member is connected to each other using a connection fitting that is embedded in the outer peripheral surface of each member in advance. He had been hired.

However, in the case of the push-on type connection method, each member is not firmly connected, so if the uneven ground settlement is large, the connection can easily come off.On the other hand, with the conventional metal connection method, each member Since the connecting fittings protrude from the outer circumferential surface of the parts, the underground excavation groove for laying each part must be wider than the width of each part, so construction can be carried out in places where there is not enough excavation width. Not only is it impossible to do this, but also because the connecting fittings are buried underground after construction, rusting and corrosion of the connecting fittings can cause each member to become disconnected or break. There were other drawbacks.

A first object of the present invention is to provide a water channel component that can form a water channel using a novel connection method that does not have the drawbacks of conventional water channels as described above. An object of the present invention is to provide a molding device for molding the waterway component of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a portion of a U-shaped open waterway formed by connecting two waterway constituent members 1A according to the present invention. The water channel component 1A shown in this embodiment has a pair of side plate portions 2 and a bottom plate portion 3, and one end surface of the side plate portion 2 has an insertion pin 4 for connection.
is provided in a protruding manner, and a stud 5 for connection is provided in a protruding manner on one end surface of the bottom plate portion 3. On the other hand, the insertion pin 4 is provided on the other end surface of the side plate portion 2.
A pin insertion hole is opened for inserting the
A stud insertion hole for inserting the stud 5 is opened in the other end surface of the bottom plate portion 3, and the insertion pin and stud of the adjacent water channel component are inserted into the pin insertion hole and the stud insertion hole, respectively. There is.

The insertion pin 4 and the stud 5 are part of the water channel component 1A.
are inserted into the pin insertion hole and the stud insertion hole, respectively, after forming the main body portion of the
FIG. 3 shows the insertion pin 4, and FIG. 4 shows the stud 5. The insertion pin 4 and the stud 5 may be made of commercially available steel products, but they may also be made of plastic products that are free from rust and corrosion. The stud 5 has threaded portions 5a at both ends thereof, and a nut 6 is screwed into the threaded portions 5a.

FIG. 2 is a perspective view of the water channel component 1 before the insertion pin 4 and stud 5 are attached. The hole 2a and the stud insertion hole 3a are open.

A non-penetrating recess 3b that opens on the inner surface of the bottom plate part 3 is formed in the vicinity of both ends of the bottom plate part 3, and the recess 3b has a stud insertion hole 3a.
is connected to. The threaded portions 5a at both ends of the stud 5 inserted into the stud insertion hole 3a are inserted into the recess 3.
The nut 6, which is screwed to the threaded portion 5a, is sunk into the recess 3b without protruding from the inner surface of the bottom plate portion 3. That is, the recess 3b allows the nut 6 to be inserted into the bottom plate portion 3.
Designed to a depth that does not protrude into the inner surface of the

The inner wall surface of the recess 3b located on the end surface side of the bottom plate portion 3 is a high-strength wall surface in which a pressure plate 7 having reinforcing bars 7a is embedded, as shown in FIG. 5 is provided. Note that 7c is a locking piece for locking the reinforcing bar 7a.

The opening of the recess 3b is wide enough to allow a nut tightening tool such as a spanner or box wrench to be easily inserted, and the nut 6 can be tightened by inserting the tool into the recess 3b.

When constructing a waterway such as a U-shaped gutter using the waterway component 1A of the present invention, for example, a groove with the same width as the waterway component 1A is excavated at the planned construction site, and the present invention is installed near the construction site. After the waterway component 1 is transported without the insertion pin 4 or stud 5 attached as shown in FIG. A waterway is constructed by attaching the waterway structure members 1A and further connecting them to each other while laying the waterway constituent members 1A in a line in the groove. The connection work consists of inserting pins 4 and studs 5 on one end of each channel component.
This is done by inserting the studs into the pin insertion holes and stud insertion holes of the adjacent water channel components, and then tightening the nuts 6 on the threaded portions 5a at both ends of each stud 5 in the recesses 3b of the respective water channel components. be exposed. After the waterway constituent members are connected to each other by tightening nuts, each recess 3b is filled with a waterproof filler such as mortar to complete the waterway construction work.

In the water channel component of the present invention, since the connecting studs 5 and the insertion pins 4 are provided on the end face of the main body of the water channel component, the water channel component is laid in an underground trench to form a water channel. Since the studs 5 and insertion pins 4 are not exposed underground even when the construction is done, the studs and insertion pins do not corrode even after a long period of time. In addition, since the studs 5 and the insertion pins 4 are provided protruding from the end face of the waterway component, the width of the underground trench for laying the waterway can be small, and therefore the excavation width does not have to be too much. Canals can be laid even in narrow spaces. Furthermore, in the water channel component of the present invention, since the opening, that is, the recess 3b for tightening the nut is provided in the bottom plate portion 3, the nut tightening work can be performed more easily than in the conventional external metal fitting type water channel. Therefore, the work efficiency is high, and there is no risk that the nut or threaded portion will be contaminated with soil or the like.

FIGS. 6 and 7 show an embodiment of a molding device for forming the water channel component 1. FIG. Reference numeral 8 denotes a lower mold of the main formwork for molding the peripheral surface side portions of the side plate portion 2 and the bottom plate portion 3 of the waterway component 1, and 9 denotes a lower mold for molding the end surfaces of the side plate portion 2 and the bottom plate portion 3. This is an end plate for forming an end face disposed on the end face of the mold 8. A recess forming core 10 for forming the recess 3b is attached to the upper surface of the lower mold 8,
A draft angle is formed on the side surface of the core 10 to facilitate removal of the concrete after hardening. A pressure plate 7 is placed on the end face of the recess forming core 10, and the tip of the rod-shaped core 11 for forming the stud insertion hole 3a can be inserted into and removed from the central cylindrical portion 7b of the pressure plate 7. is inserted into. A threaded portion is formed at the base end of the rod-shaped core 11, and a nut-shaped head 11a is fixed thereto, and the threaded portion meshes with the internal thread of the fixing nut 12 welded to the end plate 9. The core 11 projects to the outside of the end plate 9 through a hole provided through the end plate 9. The rod-shaped core 11 can be pulled out to the outside of the end plate 9 by rotating the head 11a, and its outer peripheral surface is tapered to facilitate pulling out.

The end plate 9 is provided with blank holes at two positions forming the pin insertion hole 2a, and fixing nuts 13 and 14 are welded to positions corresponding to the blank holes, respectively. Each fixing nut 1
Rod-shaped core 1 equipped with a threaded portion that engages with 3 and 14
5 and 16 protrude toward the inside of the end plate 9,
Nut-shaped heads 1 are provided at the proximal ends of the cores 15 and 16.
5a and 16a are fixed. Rod-shaped core 15
and 16 have a tapered portion that becomes thinner toward the tip, and its dimensions are designed to be approximately the same as the insertion pin 4.

When forming the water channel component 1 using the above-mentioned formwork apparatus, as shown in FIG. After that, the pressure plate and rod-shaped cores 11, 15, and 16 are set. As a result, concrete is poured into the closed space formed between the lower mold 8 and the side and end plates.

After the concrete has hardened, reverse the steps above.
Heads 11a, 15 of rod-shaped cores 11, 15, 16
After rotating the fixing nuts 12 to 14 and disengaging them, the rod-shaped cores 11, 15, 16 are pulled out from the concrete, the end plate 9 is separated from the lower mold 8, and the side plate is removed. The water channel component 1 shown in the figure can be taken out. In this case, since the rod-shaped cores 11, 15, 16 are tapered, they can be easily pulled out from the concrete. Furthermore, since the tip of the rod-shaped core 11 is only lightly inserted into the cylindrical portion 7b of the pressure plate 7, it can be easily pulled out from within the cylindrical portion 7b, leaving the pressure plate 7 in the concrete.

The effects of the present invention explained above are as follows.

According to the waterway component of the present invention, unlike waterways constructed using conventional metal fitting connection methods, the connectors are not exposed underground, so the connectors are not corroded and the connections between each waterway component are prevented. There is no risk of the waterway coming off, and unlike conventional waterways, there are no connectors installed on the outside of the waterway, so there is no need to excavate a trench wider than the width of the waterway. can do.

In the above embodiments, only the case where the present invention is applied to a waterway with a U-shaped cross section is shown, but it goes without saying that the present invention can also be applied to an L-shaped waterway. In addition, the recess 3
b and studs 5 may be provided on the side plate portions, and insertion pins and pin insertion holes may be provided on the bottom plate portion 3.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a part of a waterway constructed by connecting the waterway component members of the present invention, FIG. 2 is a perspective view of the waterway component before the connecting member is attached, and FIG. 3 is a perspective view of the waterway component before the connecting member is attached. FIG. 4 is a front view of one of the insertion pins, and FIG. 4 is a front view of the stud, which is one of the connecting members.
Figures 5a, b, and c are front views, side views, and plan views of the pressure plate embedded in the waterway component;
The figure is a perspective view of the main parts of a molding frame device for molding the water channel component of the present invention, and FIG. 7 is a sectional view taken along the - arrow in FIG. 6. 1, 1A... Channel component, 2... Side plate part,
2a...Pin insertion hole, 3...Bottom plate part, 3a...
Stud insertion hole, 3b... recess, 4... insertion pin, 5... stud, 6... nut, 7... pressure plate, 8... lower mold, 9... end plate, 10... medium for forming the recess child, 11... rod-shaped core, 12-14... fixing nut, 15, 16... rod-shaped core.

Claims (1)

[Scope of Claims] 1. A waterway constituent member that can constitute an L-shaped cross-sectional waterway or a U-shaped cross-sectional waterway by being connected to each other, the waterway constituent member comprising at least one side plate portion 2 and the side plate portion. A bottom plate portion 3 is connected to the lower end of the side plate portion 2, and an insertion pin 4 for connection is provided protruding from the end surface of the side plate portion 2, and a pin insertion hole 2a for inserting the insertion pin 4 is provided. On the other hand, a stud insertion hole 3a for inserting a connecting stud 5 is opened in the end face of the bottom plate part 3, and a stud insertion hole 3a is opened in the inner surface of the bottom plate part 3.
A recess 3b communicating with the stud insertion hole 3a is formed, and the stud 5 inserted into the stud insertion hole 3a is inserted into the bottom plate portion 3.
A threaded portion 5a on one end side of the stud is exposed in the recessed portion 3b, and a fastening nut 6 that is screwed to the threaded portion 5a is disposed within the recessed portion 3b. 3. An inner wall surface of the recessed portion 3b near the end surface of the channel member 3 is constituted by a high-strength pressure plate 7. 2. Claim 1, characterized in that the insertion pin protrudes from only one end surface of the side plate portion, and the pin insertion hole is provided only from the other end surface of the side plate portion. waterway components. 3. The water channel component according to claim 1, wherein the insertion pin is detachably attached to the side plate portion. 4. It comprises at least one side plate part and a bottom plate part connected to the lower end of the side plate part, and the end surface of the side plate part is provided with an insertion pin for connection and a pin insertion hole for the insertion pin. A stud insertion hole for inserting a connecting stud is provided on the end face of the bottom plate, and a recess that communicates with the stud insertion hole is formed on the inner surface of the bottom plate. A device for forming a water channel component having a structure in which a threaded portion at one end of the stud is exposed and a fastening nut screwed to the threaded portion is disposed within the recess, the device comprising: a main formwork for forming the bottom plate portion; a second rod-shaped core for supporting the first rod-shaped core for forming the pin insertion hole and for forming the stud insertion hole; and an end plate for forming an end face and disposed on the end face of the main formwork, and a core for forming a recess disposed at the tip of the second rod-shaped core. Formwork equipment for molding.