JPS6032061Y2 - Wedge type segment hanging bracket - Google Patents

Description

[Detailed description of the invention] This invention relates to a rust-type segment hanging fitting that is easy to attach and detach.

The hanging fittings for concrete segments (hereinafter abbreviated as "segments") that have been commonly used in the past are of a joint type in which a screw is cut on the outer periphery of one end and an insertion hole for an erector pin is provided at the other end.

In this use, the screw portion is screwed into the ground hole of the segment, and the hook pin of the erector is connected to the erector pin insertion hole.

These types of segment hanging fittings have to be screwed into the grout hole each time they are hung, which is very cumbersome and inefficient, and may cause slight damage to the threaded part or crushing, making it impossible to screw in. There was a problem.

This idea was devised in view of the above circumstances, and its purpose is to form a single-step tapered part inside the ground hole of the segment, into which the tip of the sling main body is inserted, and then screwed onto the sling main body. Turn the flanged screw body,
A wedge that easily suspends a segment by pushing out a wedge piece that is loosely fitted on the outer periphery of the tapered end of the hanging tool body and bringing the circumferential surface into contact with the first step of the taper to prevent the lifting tool main body from coming off. The purpose of this invention is to provide a type segment hanging fitting.

An embodiment of this invention will be described in detail below based on the drawings.

Figures 1a, b, and c are diagrams showing the overall structure of the hanging fitting.

In the figure, reference numeral 1 indicates a segment, and reference numeral 2 indicates a ground hole.

The central part of the inside of this grout hole 2 is defined as a single-step tapered part 2a, and one hole opening (upper side in the figure) of this single-step tapered part 2a has a socket 2 with a cut screw for plug screwing.
protected by b.

A wedge-type segment hanging fitting 3 is attached to the grout hole 2 configured in this way.

This hanging fitting 3 includes a hanging fitting main body 6 provided through a screw body 5 provided with a flange 4, and a wedge piece 7 loosely fitted around the outer periphery of a tapered part 6a provided at the tip of this hanging fitting main body 6.
It is composed of three main parts:

The flange 4 is provided with two key types 4a, 4a (see the figure), and these holes 4a, 4a are designed to fit into the rotation stoppers 1a, la protruding from the segment 1. ing.

Also, the wedge piece 7... is two grooves provided on the outer periphery? a
, 7a are connected in a ring shape by a spring 8 that is fitted and wound around the suspension body 6, and is always pressed against the side of the suspension body 6.

By the way, the neck part 6b of the tapered part 6a of the hanging tool main body 6
The vicinity is formed slightly thinner than the upper part, and the grout hole 2
The outer periphery of the wedge piece 7 that slides upward when removing the hanging metal fitting 3 is thin so that it does not come into contact with the inner wall of the reground hole 2.

Further, as shown in FIG. 1, the one-step tapered portion 2a and the tapered portion 6a are set so that the angles of inclination with respect to the axis of the grout hole are approximately the same, and each wedge piece 7 is formed in the one-step tapered portion. It is designed to come into uniform surface contact with the surface of 2a.

In the figure, 9 is an erector-connecting metal fitting, and 10 is a screw.

Figure C shows how the wedge pieces 7 and the spring 8 are wound.

Next, with reference to FIG. 2, the attachment/detachment state (function) of the hanging fitting 3 of the wedge-type segment having the above structure will be explained.

■ indicates the previous state of installation.

In this state, the screw body 5 is located upward, the lower end tapered portion 6a of the suspender main body 6 protrudes downward, and the ring-shaped wedge pieces 7 are in a constricted state.

Therefore, the wedge-type segment hanging fitting 3 is thin as a whole, and can be easily inserted into the ground hole 2 of the segment 1 by lowering it as shown by the arrow.

■ indicates the inserted state.

In this state, key types 4a, 4a each having a flange 4 are fitted to the anti-rotation fittings 1a, la protruding from the segment 1, and the screw body 5 is fixed to the segment 1 by slightly twisting the flange 4.

■ indicates the opening process of wedge piece 7.

Pinch the erector fitting 9 and rotate the hanger main body 6 to project it upward.

In this case, the screw body 5 is fixed at ■, so it does not rotate together.

As the hanging main body 6 rises, the tapered portion 6a at the lower end moves upward, and with this movement, the wedge piece 7 loosely fitted on the outer periphery
I'm going to open...

■ indicates a state in which the hanging fitting 3 is fixed to the segment 1.

In other words, in the operation (■), the rift rust piece 7... is completely opened, and the taper part 6a and the taper first step part 2 of the grout hole 2 are completely opened.
It is interposed between the holes 6a and 6a, and acts as a wedge to prevent the tapered portion 6a from being pulled out and removed, thereby firmly fixing the hanger main body 6.

Next, the operation for removing the hanging fitting 3 can be performed by performing operations in the reverse order of steps (1) to (2) described above, so a detailed explanation will be omitted.

In the above, when the wedge pieces 7 are held between the tapered part 6a and the first tapered part 2a as shown in FIG. Therefore, the surface of the tapered single step portion 2a, which is concrete, will not be damaged by the wedge piece.

Furthermore, if both tapers are made to have the same inclination angle in this way, even if there is some variation in the inner diameter of the first taper part 2a due to manufacturing reasons, each wedge piece 7 will be adjusted in the radial direction accordingly. Since the wedge pieces 7 move to spread as they are, the outer surface of each wedge piece 7 comes into uniform surface contact with the surface of the single-step tapered portion 2a.

Since this invention has the above-described structure and operation, the hanging fitting can be attached and detached from the grout hole extremely easily, and the fixation can be made strong and stable.

Further, when attaching and detaching the hanging fitting, the screw of the socket provided at the grout hole opening will not be damaged or crushed, so there is no risk of interfering with the attachment of the plug or the like.

Furthermore, since the ground hole is a tapered hole, the injection efficiency of mortar etc. is very good and the work can be done quickly.

Furthermore, since the hanging fitting itself has a simple structure, it can be provided at low cost and has excellent practical effects.

[Brief explanation of the drawing]

Figures 1a, b, and c show an embodiment of this invention, in which figure a is a longitudinal cross-sectional view of the main part, figure C is a plan view, figure C is a cross-sectional view of the wedge part, and figure 2 is a cross-sectional view of the wedge part. 2. 3.4 is an explanatory view showing the attachment/detachment state of this invention. 1... Segment, 2... Grout hole, 2a... One step tapered part, 3... Hanging fitting for bent wedge type segment, 4... Flange, 5
...Spiral body, 6 ... Hanging tool body, 7.
...Wedge piece, 8...Spring.

Claims (1)

[Scope of utility model registration request] A hanging fixture for a concrete segment 1, which has a tapered one-step part 2a with an inclined angle that becomes smaller toward the opening of the ground hole inside the ground hole 2,
A screw body 5 having a flange 4 that comes into contact with the periphery of the opening of the grout hole, a suspender body 6 that is screwed through the screw body, and a tapered portion 6a formed at one end of the suspender body. , a plurality of wedge pieces 7 arranged around the outer periphery of a part of the taper, a spring 8 attached to hold the wedge pieces in a ring shape, and a fitting 9 provided at the other end of the suspender main body. , and the tapered one-step portion 2a.
The tapered portion 6a is set so that the angles of inclination with respect to the axis of the ground hole are substantially the same, and the flange 4 is fitted with a stopper 1a protruding from the concrete segment. A wedge-type segment hanging fitting characterized in that a matching hole 4a is provided.