JPS6220603Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a vertical chute for supplying plastic materials such as mortar, concrete, asphalt, etc. (hereinafter referred to as concrete) deep vertically downward, and its purpose is to By preventing separation and controlling the flow rate,
An object of the present invention is to provide a vertical chute that safely and efficiently supplies input materials vertically downward without noise.

Conventionally, buckets and chute have been used as devices to feed concrete vertically downward, but
Buckets are inefficient, and chute, which uses rigid pipes such as steel pipes, has the disadvantage of causing separation of concrete and high falling speed, making it difficult to pour concrete directly into formwork. . A chute has also been proposed in which a flexible pipe is used and the vertical load acting on the pipe body is supported by a hanging member. However, in this chute, the flexible pipe is attached to the joint flange by placing both ends of the flexible pipe over short pipes protruding from the joint flange, and fastening these parts with a plurality of mounting bands. Therefore, there were problems in that it took time and effort to assemble the chute, and it was not completely fastened against tension in the longitudinal direction. Further, there was a risk that the rubber would stretch too much in the longitudinal direction, or that the rubber would expand in the radial direction when the concrete block passed through the rubber hose, causing the hose to burst.

This invention was made in an attempt to improve the drawbacks of the above-mentioned conventional vertical chute.

Hereinafter, the vertical chute of this invention will be explained based on an illustrated embodiment.

The vertical chute of this invention is constructed by connecting a required number of reinforcing hoses 6 as shown in FIG.

Both ends of the reinforced hose 6 have flanges 1 provided with screw holes 10 that serve as fittings for connecting the hose.
and a metal ring 2 for fixing the reinforcing material 4 are embedded by integral molding and vulcanization. Therefore, the reinforced hose 6 has a cylindrical shape 7 near both ends of the hose.

The central portion of the hose excluding both ends has a flat shape 8 as shown in FIG. In order to further increase the flatness of this portion, it is preferable to temporarily install round steel or the like on the bent portion of the inner rubber layer 5 to provide a bent portion or to provide a V-shaped recess.

As shown in FIG. 3, this reinforced hose 6 has a layer of reinforcing material 4 made of chemical fiber, metal fiber, or inorganic fiber such as glass fiber or carbon fiber between the inner rubber layer 5 and the outer rubber layer 3. It has high strength.

The reinforcing material 4 is a reinforcing material 4a in which fibers are arranged in the longitudinal direction to prevent the hose from elongating in the longitudinal direction.
and one to two layers, preferably multiple layers, of reinforcing material 4b with fibers arranged at an angle of 45° to 90° with respect to the length direction to prevent the hose from elongating in the radial direction. preferable.

The reinforcing material 4b prevents the hose from expanding in the radial direction due to the elongation of the rubber when the concrete mass passes inside the rubber hose, and also prevents the hose from bursting.

When the reinforcing material 4a is fixed in the length direction of the reinforcing hose 6 with a wire rope 9, which will be described later, the rubber stretches and sag due to the weight of the concrete lump and the hose itself, causing the concrete to sag. To prevent lumps from falling and to increase cutting strength.

As shown in Fig. 4, the reinforcing material, such as chemical fibers, is inverted by the metal ring 2 that engages with the flange 1, and is integrally molded with the outer layer rubber 3, the inner layer rubber 5, the flange 1, the reinforcing material 4, and the metal ring 2. It is vulcanized and provides extremely secure fastening against tension.

When a concrete mass is introduced into the vertical chute made of such a reinforced hose 6, the concrete mass first enters the cylindrical portion 7, and thereafter falls inside the hose 6 due to its own weight.

In this case, if all the hoses were cylindrical, the concrete mass would fall at a high speed like in the conventional steel pipe chute type, but in the chute of the present invention, the majority of the hose following the cylindrical part 7 is a flat part 8. Therefore, the falling speed decreases due to the resistance of the flat portion 8.
Furthermore, since this entire device has an airtight structure, as the concrete block falls, the inside of the reinforcing hose becomes negative pressure, and is pushed by atmospheric pressure from the outside, which further reduces the frictional resistance between the reinforcing hose and the concrete block. It becomes something big.

Therefore, the falling speed of the concrete mass becomes slow, and the concrete mass falls without separating. The vertical load (the weight of the hose itself, the weight of concrete) acting on the reinforced hose is supported by wire ropes 9 placed along both sides of the reinforced hose. The wire rope has eye bolts 11 on both ends.
is attached, and is fixed using the screw hole 10 of the flange 1.

This device consists of the above-mentioned structure, and the reinforcing material is inverted with a metal ring that engages with the inner surface of the flange, and the rubber layer, flange, reinforcing material, and metal ring are all integrally molded and vulcanized, so that it can be used for connection. Not only does it save you the trouble of attaching the hose to the flange, which serves as a metal fitting, but it also provides an extremely strong and safe connection against tension. In addition, because we use reinforcing materials with fibers arranged in the length direction and reinforcing materials with fibers arranged at an angle of 45 to 90 degrees with respect to the length direction, This prevents the hose from stretching, and the strength of the hose becomes extremely high.

Furthermore, since the concrete mass falls slowly without separating, it is extremely advantageous for the safety of workers who perform concrete pouring and compaction at the lower end of the reinforcing hose, and is also efficient. It is more preferable to connect the reinforcing hoses at the flange portions of the vertical chute to be connected so that the reinforcing hoses have different flattening directions in order to avoid flattening of the reinforcing hoses in the same direction. Since this reinforced hose is flexible, the hose tip can be easily moved to accommodate different placement positions, and direct placement is possible.

[Brief explanation of the drawing]

Fig. 1 is a side view of the reinforced hose of the present invention, Fig. 2 is a side view showing the connection state of the reinforcing hose, and Fig. 3 is a side view of the reinforced hose of the present invention.
The figure is a partially cutaway perspective view showing the structure of the reinforced hose, FIG. 4 is a partial vertical sectional view of the end of the reinforced hose, and FIG. 5 is a plan view of the flange. 1... Flange, 2... Metal ring, 3... Outer layer rubber, 4... Reinforcement material, 5... Inner layer rubber, 6...
Reinforced hose, 7... Cylindrical part, 8... Flat part, 9...
...wire rope, 10...screw hole in flange, 11...eye bolt.

Claims (1)

[Scope of utility model registration request] A composite reinforcing material layer consisting of a reinforcing material with fibers arranged in the length direction of the hose and a reinforcing material with fibers arranged at an angle of 45 to 90 degrees with respect to the length direction is combined with an inner rubber layer and an outer rubber layer. Obtained by inverting the end of the composite reinforcing material layer of the reinforced hose between them by a metal ring that engages with the flange, and performing integral molding vulcanization with the metal ring and the composite reinforcing material layer engaged with the flange, The rubber layer, the flange, the composite reinforcing material, and the metal ring are integrally molded to form a connecting part at each end, and the end part connected to the flange is cylindrical, and the remaining central part excluding the end part. 1. A vertical chute for pouring concrete, characterized in that a required number of reinforcing hoses, most of which are formed into a flat shape, are connected by the connecting portion.