JP3069684B2 - Concrete block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large number of concrete blocks arranged adjacent to a slope or the like.

[0002]

2. Description of the Related Art Conventionally, a large number of concrete blocks have been laid to protect the river bottom and slopes of rivers. Because of the exposed concrete surface, these concrete blocks have a very artificial appearance and do not fit the surrounding natural landscape. Therefore, in recent years, adapting these buildings to natural scenery has been performed. For example, a natural stone block in which natural stone is arranged on the surface of a concrete block is often used as a means for this.

[0003]

However, when these natural stone blocks are lifted by a crane and installed on a construction surface, the natural stones on the surface are not uniform in size and have different weights. Is different for each block. Then, there is a problem in that the operation of adjusting this becomes extremely complicated.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a concrete block which can easily adjust the posture when lifted to the inclination of a construction surface.

[0005]

According to the first aspect of the present invention, a concrete block is provided with a vertically penetrating hole,
It is characterized in that lifting anchors are protruded laterally from the inner wall, and the inclination of the concrete blocks lifted by ropes individually connected to these anchors is controlled.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A natural stone block 10 according to a first embodiment of the present invention will be described below with reference to FIGS. First, in FIGS. 1 to 3, a natural stone 12 is provided on a surface of a block main body 11. Further, through holes 13 are formed at four places penetrating the block body 11 vertically, and these inner wall portions are used as anchor attachment portions. Lifting anchors 14 are provided so as to protrude laterally from the inner wall of the through hole 13.
The four anchors 14 are arranged at positions corresponding to the vertices of a square.

As shown in FIG. 1, one end of a rope 15 is attached to each of the anchors 14.
When the other ends of the ropes 15 are collectively attached to the crane C and pulled up, the natural stone block 10 is lifted. By adjusting the length of the four ropes 15, the inclination of the suspended natural stone block 10 can be freely selected.

As shown in FIG. 4, the natural stone block 10 is laid so that the side surfaces thereof sequentially contact from the lower stage of the construction surface 16 to the upper stage. That is, the length of the four ropes 15 is adjusted, the bottom surface of the natural stone block 10 lifted by the crane C is adjusted to the inclination of the construction surface 16, and the natural stone block 10 is moved above the installation location and descends as it is. Then, it can be installed at a desired position.

If necessary, concrete is poured into the through-hole 13 and natural stone 17 is placed on the surface thereof (shown by a dotted line in FIG. 2). , 17 and the anchor 14 is not exposed to the outside.

In the first embodiment, the natural stone 12 is provided on the surface of the block main body 11, but the natural stone is not always necessary, and may be provided as necessary. It is.

The number of the anchors 14 is not limited to four, but may be at least three. The distance between the anchors 14 is such that the natural stone block 10 is stably lifted and the length of the rope 15 is adjusted. It may be set so that the posture (inclination) can be changed.

If necessary, a natural stone 17 may be provided in the through hole.
The surface of the natural stone block 10 is entirely covered with the natural stones 12 and 17, the anchor 14 is not exposed to the outside, and the appearance of the construction surface 16 can be adapted to the surrounding natural scenery.

The method for producing the natural stone block 10 is as follows.
In some cases, sand is laid on the bottom of the formwork, natural stones are laid on top of the sand so that part of the form is buried in the sand, and then concrete is cast. It is necessary to turn over such a natural stone block 10 after removing the formwork. In the case of this embodiment, FIG.
(A) to (d) can be easily and safely reversed. That is, in FIG.
Surface A is on the underside. Then, the rope 15A is hung on the anchor 14a on one side through the through hole 13 from the back side, and the natural stone block 10 is pulled up and rotated 90 degrees.
(B)｝. Next, as shown in FIG. 5 (b), the rope 15A is removed from the anchor 14a, and the rope 1 is passed through the through holes 13 from the surface side to the anchors 14a and 14b.
Multiply 5B and 15C. Then, FIG. 5 (c), FIG.
As shown in (d), when the ropes 15B and 15C are pulled up, the natural stone block 10 is inverted and the surface A is located on the upper side.

According to the first embodiment, the anchor 14
If the length of the four ropes 15 attached to the natural stone block 10 is adjusted, the posture of the natural stone block 10 thus lifted can be adjusted.
Since the inclination can be adjusted to the inclination of the construction surface 16 irrespective of the position of the center of gravity of 0, the operation can be remarkably facilitated. .

FIGS. 6 and 7 show a second embodiment of the present invention. The difference from the first embodiment is that a linear anchor 18 is provided on both inner wall portions of the through hole 13 facing each other. That is the point. In the second embodiment, in addition to the effects of the first embodiment, there is an effect that the anchor 18 can be easily manufactured.

FIG. 8 shows a natural stone block 2 according to the third embodiment.
The difference from the first embodiment is that four concave portions 21 are formed on the surface of the block main body 11 as anchor mounting portions, and the anchors 22 are mounted in the concave portions 21 respectively.

According to the third embodiment, the anchor 22
Is attached to the front side of the block body 11, so that the natural stone block 20 is manufactured in the form of the natural stone block 20. After the form is removed, if it is lifted by the crane C, it can be installed on the construction surface 16 as it is. Construction work can be significantly simplified. In addition, since the anchor 22 is housed in the concave portion 21, it does not hinder the surrounding scenery. The third embodiment also has the same effects as the first embodiment.

FIG. 9 and FIG. 10 shows a natural stone block 30 of the fourth embodiment, different from the third embodiment,
The point is that a lifting anchor 22 is protruded from the surface of the block body 11 and the height of the anchor 22 is set lower than the surrounding natural stone 12. Also in the fourth embodiment,
The third embodiment has the same advantages as the first embodiment.

[0019]

According to the first aspect of the present invention, a concrete block is provided with a vertically penetrating hole, and a hole is formed laterally from an inner wall portion of the hole.
The anchors for lifting are protruded from the concrete blocks, and the slopes of the concrete blocks are controlled by the ropes individually connected to these anchors. It can be changed to, moreover, concrete
This makes it possible to easily and safely turn the upper and lower blocks upside down, and to achieve an excellent effect that the work becomes easy.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state where a concrete block according to a first embodiment is lifted.

FIG. 2 is a side view.

FIG. 3 is a plan view.

FIG. 4 is a diagram showing a state of laying on a construction surface.

FIG. 5 is a diagram illustrating a step of inverting a concrete block. FIG. 4 is an enlarged plan view in which natural stones are provided in concave portions.

FIG. 6 is a side view of the second embodiment.

FIG. 7 is a plan view.

FIG. 8 is a side view of the third embodiment.

FIG. 9 is a plan view of a fourth embodiment.

FIG. 10 is a side view.

[Explanation of symbols]

 Reference Signs List 10 natural stone block (concrete block) 11 block main body 12 natural stone 13 through hole (anchor attachment part) 14 anchor 15 rope 16 construction surface 17 natural stone 20 natural stone block (concrete block) 21 concave part (anchor attachment part) 22 anchor 30 Natural stone block (concrete block)

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E02D 17/20 103 E02D 29/02 301-312 B66C 1/66

Claims (1)

(57) [Claims] 1. Penetrating up and down a concrete block
A hole is provided, and a lifting anchor is provided laterally from the inner wall of the hole.
Projecting the concrete blocks, characterized in that so as to control the slope of the concrete block lifting by rope linked individually to these anchors.