JPS6039223Y2 - Formwork for concrete blocks - Google Patents

Description

[Detailed description of the device] This device has four legs that protrude radially from the center at equal intervals, three of which are tapered, and the remaining leg is a cylindrical double leg. 1. A concrete block for manufacturing a concrete block which is formed from individual protrusions, and is arranged such that the tapered legs of each protrusion correspond to each other, with the cylindrical legs of these protrusions serving as an integral connection. Concerning formwork.

Concrete blocks like this can be used both on the coast for wave dissipation and as dams on rivers, and since each leg is formed with a curved surface, they do not create eddy currents. It can effectively prevent scouring of riverbeds, etc., and so far no frame body has been proposed that allows this block to be manufactured directly on-site.

The object of this invention is to provide a front plate element having protruding ends that protrude radially in three directions from the center, each of which has an arcuate cross-section and is tapered; The rear plate element is composed of a rear plate element and two members having protruding ends that protrude radially in three directions from the center and have an arcuate cross section, two of which are tapered, and the remaining two side plate elements, each of which has a straight protruding end, and two side plate elements configured such that the straight protruding ends form an integral connection; a constructed bottom plate element and four end plates, each element being assembled to one another by flanges formed at respective edges, said end plates being attached to the lower ends of the assembled elements. In the concrete block formwork adapted to be installed, openings for the insertion of vibrators are provided near both edges of the integral connection formed in the side plate element and the rear plate element, and the side plate element To provide a concrete block formwork characterized in that a lower opening of the concrete block and an opening of the bottom plate element are closed by a closing plate.

Next, this invention will be explained with reference to the drawings.

Figure 1 shows a concrete block produced in a formwork according to this invention, which is separated by two protrusions 1.2,
Each of the protrusions 1 and 2 has four legs 1a to 1d; 2a to 2d that protrude radially from the center at equal intervals.

Legs 1a, lb, 1c: 2av 2b, 2c are tapered and each end is chamfered.

Further, only the leg portions 1d and 2d are formed in a cylindrical shape and are connected together to form a connecting portion.

Legs 1a, lb, lc of protrusion 1 and leg 2 of protrusion 2
a, 2 b* 2 c are positioned in correspondence with each other.

The proximal ends of all legs each have the same diameter.

Second. 3. As shown in Figure 4, the formwork consists of a front plate element 3, a rear plate element 4, side plate elements 5, 6, and a bottom plate element 7, each element 3 to 7 extending from the concrete block at an angle of 1200 to each other. It has a split shape.

The front plate element 3 and the rear plate element 4 as well as the side plate elements 5, 6 and the bottom plate element 7 are constructed in the same way, so that only the front plate element 3 and the side plate element 5 will be described.

The front plate element 3 has projecting ends 3at, 3bt, 3c that project radially in three directions from the center, each end 3a, 3.
b* 3 c is formed into an arcuate cross section and is tapered;
A sloped portion 8 is formed at the tip.

On the other hand, the side plate element 5 is cut out from two members 5' and 5'', and these have protruding end portions 5'a, 5'by 5'c, 5''a, 5'' radially protruding from the center in three directions, respectively. b
, 5″C, of which two protruding ends 5′a
t 5'b, 5"at 5"b are tapered, and the remaining protruding end 5'c: 5"C is formed straight, and these end portions 5'c, 5"C are connected to each other. and form one connecting part.

Each protruding end portion is formed to have an arcuate cross section similarly to the front plate element 3, and the protruding end portions 5'a, 5'b: 5''a, 5''b
has an inclined portion 9.

As is clear from FIG. 2, the integral joint of the side plate element 5 has openings 1 for the insertion of vibrators near both edges thereof.
0 is provided, and bolts 11 are attached to each edge of this opening 10.

The opening can be closed by tightening the closing plate 12 onto the bolt with a nut.

Each element 3 to 7 has a flange at its respective edge;
They are assembled by tightening them together with bolts.

When the elements are assembled in this way, the projections and upwardly directed openings 10 intended to form the legs 1a, 2a of the concrete block shown in FIG. 1 are for filling with concrete. The lower four protrusions and opening 10 are open to the end plate 13 and closing plate 12.
Closed by.

The end plate 13 is attached using suitable fasteners, such as C-shaped lamps.

FIG. 5 shows another embodiment for closing an opening, in which a flange 14 is formed at each edge of the opening 10, and a closing plate 12 is disposed within the frame formed by the flange 14.
A frame formed by the upper flange 15 is fitted, and these frames are fixed from both sides by pins 16.

Filling with concrete is performed as described above while stirring with a vibrator, but in this case, reinforcing bars may be placed in advance in the formwork for reinforcement.

In this way, according to this invention, since the formwork is constructed from elements that are fastened together with bolts, it is possible to obtain a formwork that is easy to assemble and disassemble, and it is possible to directly manufacture desired concrete blocks on-site. can.

Furthermore, each element is highly interchangeable, requiring only two types of elements to be formed, and the elements can be assembled regardless of orientation.

[Brief explanation of drawings]

Figure 1 shows a concrete block manufactured using the formwork of this invention as seen diagonally from below, and Figures 2 and 3.4 show the front view, left side view, and plan view of the formwork of this invention, respectively. 5 is a perspective view showing another embodiment for closing the opening. 3...Front plate element, 4...Rear plate element, 5
, 6... Side plate element, 7... Bottom plate element,
3a, 3b, 3c...Protruding end, 5'
, 5' ---- one member, 5'a, 5'b. 5'C: 5"a. 5"b. 5″C...protruding end, 0...opening, 12...closing plate, 13...end plate.

Claims (1)

[Scope of utility model registration request] A front plate element having protruding ends that protrude radially in three directions from the center, each of which has an arcuate cross-section and is tapered; and a rear plate element configured in the same manner as the front plate element. It has protruding ends that protrude radially in three directions from the center and have an arcuate cross section, two of which are tapered and the remaining protruding end is straight. two side plate elements constructed in such a way that the straight protruding ends of these members form an integral connection part; a bottom plate element, and four end plates, each element being assembled together by a flange formed on a respective edge, said end plate being attached to the lower end of the assembled element. In the formwork for a concrete block, an opening for inserting a vibrator is provided near both edges of the integral joint formed in the side plate element and the rear plate element, and an opening for inserting a vibrator is provided in the lower part of the side plate element. A formwork for a concrete block, characterized in that the opening and the opening of the bottom plate element are closed by a closing plate.