JP2577046Y2 - Hanging bracket for 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 hanging metal fitting for a concrete block, and more particularly to a hanging metal fitting whose main part can be used a plurality of times.

[0002]

2. Description of the Related Art Recently, a wire saw method has been receiving attention as a method of dismantling a reinforced concrete bridge or building. This type of wire saw method is a method of cutting reinforced concrete by using a wire saw in which beads on which granular diamond is electrodeposited or sintered are attached to a wire together with a spacer. The construction method is disclosed in Japanese Patent Publication No. 1-53427 and the like, and there is an advantage that cutting can be performed with high efficiency and the influence on the surrounding environment is small.

[0003] When a reinforced concrete structure is cut by such a wire saw method, it is often divided into blocks in consideration of the subsequent transportation work and the like. After being cut into blocks, the blocks are put on a truck or the like and removed from the construction site.
Such removal work was usually performed in the following procedure.

Since a reinforced concrete block divided by a wire saw has no portion for locking a slinging wire, first, a hole is formed in a block, a bolt is inserted into the hole, and the bolt is fixed with a chemical anchor or the like. Then, using the bolt as a hanging metal, a sling wire is attached to the bolt, lifted by a crane or the like, and mounted on a transport truck.

However, the following problems have been pointed out in such conventional hanging fittings.

[0006]

[Problems to be Solved by the Invention] That is, the above-mentioned hanging bracket has a structure in which the bolt is fixed to the reinforced concrete block with a chemical anchor or the like.
It can be used only once, causing an increase in cost. The present invention has been made in view of such a conventional problem.
It is an object of the present invention to provide an economical concrete block hanging metal fitting capable of reusing a component member a plurality of times.

[0007]

In order to achieve the above object, the present invention provides a hollow cylindrical sleeve having both ends opened, which is mounted in a hole formed in an opposing portion of a concrete block, and a head. A screw is provided on the side, and has a shaft that is driven into the sleeve through the opening, and a nut that is screwed to the screw of the shaft and fixes a wire for slinging to the shaft. A hanging metal fitting for a concrete block, wherein the hole is provided to be inclined upward from horizontal, and the inner peripheral surface of the sleeve and the outer peripheral surface of the shaft portion are formed as tapered tapered surfaces. Features.

[0008]

According to the above-mentioned hanging metal fitting, after the concrete block is suspended via the slinging wire and moved to the predetermined position, the nut is screwed in with the spacer interposed between the concrete block and the shaft. Separated and the sleeve can be removed from the hole.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 to FIG. 3 show an embodiment of a concrete block hanging bracket according to the present invention. The hanging bracket shown in the figure includes a hollow cylindrical sleeve 10 shown in FIG. 1, a rod-shaped shaft body 12 shown in FIG.
It is composed of a nut 14 and a washer 16.

The sleeve 10 has a hollow cylindrical shape with both ends opened, and its inner peripheral surface is a tapered surface tapered from one end to the other end. Shaft 12
Is formed to be longer than the entire length of the sleeve 10, and a screw 12a is provided around the outer peripheral surface on one end (head) side by a predetermined length. The outer peripheral surface of the shaft body 12 is formed as a tapered surface that tapers from one end (head) side where the screw 12a is provided to the other end side, and the angle of this tapered surface is
The inclination angle of the tapered surface provided on the inner peripheral surface of the sleeve 10 is set substantially equal to the inclination angle.

The nut 14 is threaded on a screw 12 a of the shaft 12 by inserting a washer 16 through the shaft 12. next,
A method of using the hanging hardware configured as described above will be described with reference to FIG. When the hanging bracket of the present invention is used, first, as shown in FIG. 4A, a hole 20 for mounting the bracket on the concrete block 18 to be moved is formed.

[0012] At least one pair of holes 20 are provided on opposing surfaces of the concrete block 18. In this use example, since the block 18 is cut into a substantially rectangular shape, it is provided on the two short sides. Te At this time, the hole 2
0 is set to have a diameter slightly larger than the diameter of the sleeve 10 and substantially the same length as the length of the sleeve 10, and is formed so as to be inclined upward from horizontal.

The angle of inclination in this case depends on the weight of the concrete block 18 and the like.
It is desirable to be inclined as described above. When such holes 20 are formed, the sleeve 10 is mounted in each hole 20 as shown in FIG. Sleeve 10 in this case
The mounting direction is set such that the tapered surface is tapered toward the inner side of the hole 20. When the mounting of the sleeve 10 is completed, as shown in FIG.
The shaft body 12 is cast in 0. And then, FIG.
As shown in (D), the slinging wire 22 is inserted through the shaft body 12, the washer 16 is inserted through the shaft body 12, and the screw 1
The wire 22 is fixed to the shaft body 12 by screwing the nut 14 to the shaft 2a (see FIG. 4E).

By the above operation, the concrete block 1
8 is ready for suspension, and in this state, the slinging wire 2
By connecting 2 to a crane or the like, the concrete block 18 is suspended and moved. When the concrete block 18 is placed on a predetermined place, for example, on the carrier of the transport truck, the nut 14 is loosened,
The slinging wire 22 is removed from the shaft 12, and thereafter,
With a plurality of washers 16 inserted through the shaft 12,
When the nut 14 is screwed into 2a and the nut 14 is screwed in,
The shaft body 12 is detached from the sleeve 10, and the sleeve 10 can be taken out from the hole 20.

In this case, the screw 1 provided on the shaft 12
If the length of 2a is relatively long, the washer 16
It is not always necessary to insert a plurality of sheets. The shaft body 12, the nut 14, and the washer 16 removed from the concrete block 18 can be reused as a hanging bracket of another concrete block. The sleeve 10
Is not necessarily fixed to the hole 20. For example, if a slit hole is provided in the outer peripheral surface along the axial direction, the diameter can be increased when the shaft body 12 is driven into the sleeve 10. However, it is also possible to lock the hole 20 by this enlarged diameter.

[0016]

[Effects of the Invention] As described above in detail with the embodiment, according to the hanging member for concrete block according to the present invention, it is possible to reuse the constituent members a plurality of times, which is very economical. It will be advantageous.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sleeve of a hanging bracket according to the present invention.

FIG. 2 is a perspective view of a shaft body of the suspension fitting according to the present invention.

FIG. 3 is a perspective view of the hanging bracket according to the present invention in an assembled state.

FIG. 4 is an explanatory view showing an example of use of the hanging fitting according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sleeve 12 Shaft 12a Screw part 14 Nut 16 Washer 18 Concrete block 20 Hole 22 Sling wire

Continuation of the front page (56) References JP-A 2-26088 (JP, U) JP-A 60-148788 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66C 1 / 66

Claims (1)

(57) [Scope of request for utility model registration] 1. A hollow cylindrical sleeve having both ends opened and mounted in a hole formed in an opposing portion of a concrete block, a shaft body driven into the sleeve through the opening, A hanger for a concrete block having a nut screwed to the shaft and fixing a sling wire to the shaft, wherein the hole is provided inclined upward from horizontal and the sleeve is provided. A hanging metal fitting for a concrete block, wherein an inner peripheral surface of the shaft and an outer peripheral surface of the shaft portion are formed into a tapered tapered surface.