JP7089130B1 - Steel fiber input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel fiber input device capable of efficiently disassembling entangled steel fibers and feeding them into a kneading device without requiring a lot of labor and a high degree of skill. SOLUTION: This is a steel fiber feeding device 10 capable of feeding steel fibers entwined in a lump shape into a kneading device 54 in a disassembled state when forming ultra-high-strength fiber reinforced concrete, and has an upper end surface thereof. The hollow box body 11 whose lower end surface is an opening surface, and the upper grid-like mesh material 12 and the lower grid-like mesh material arranged inside the hollow box body 11 at intervals of 100 to 600 mm in the vertical direction. 13 and the vibrators 15a and 15b that vibrate them are included. The upper grid mesh material 12 has a rectangular mesh having a side of 50 to 150 mm, and the lower grid mesh material 13 has a rectangular mesh having a side of 15 to 50 mm. Have. [Selection diagram] Fig. 1

Description

The present invention relates to a steel fiber loading device that enables a kneading device to load steel fibers that are intertwined in a lump shape in a disassembled state when forming ultra-high-strength fiber reinforced concrete.

Ultra-high strength fiber reinforced concrete (UHPFRC including UFC), which is a cement-based composite material reinforced with steel fibers and organic fibers and has a compression strength of about 100 N / mm ² or more, is described in, for example, Non-Patent Document 1. It is a material with ultra-high strength, high toughness, high fluidity, high durability, etc., and by utilizing its excellent performance, it is preferably proposed and put into practical use as a constituent material for various bridge structures. There is.

Further, for example, according to the Concrete Library-113 “Ultra-high-strength fiber-reinforced concrete design / construction guideline (draft)” of the Society of Civil Engineers, ultra-high-strength fiber-reinforced concrete (UFC) preferably has a particle size of 2.5 mm or less. It is composed of aggregate, cement, pozolan, etc., and the water-cement ratio is, for example, 0.24 or less. In addition, due to the fact that no aggregate with a large particle size is used, the use of pozzolan material, and the setting of the upper limit of the water-cement ratio, ultra-high-strength fiber reinforced concrete is a material with maximum compactness. .. In the ultra-high strength fiber reinforced concrete, for example, 2 vol of high tension short fibers (length is about 10 to 20 mm) having a diameter of, for example, about 0.1 to 0.25 mm and a tensile strength of about 2 kN / mm ² or more. It is blended in about%, and by ensuring the adhesiveness by matching with a precise material, an excellent fiber reinforcing effect can be obtained.

The strength characteristics and durability resulting from the material composition of ultra-high-strength fiber reinforced concrete show significantly superior performance compared to conventional concrete. In recent years, for example, pedestrian bridges, road bridges, and floor slabs have been shown. Ultra-high-strength fiber reinforced concrete has come to be applied to various applications such as. In particular, it has come to be preferably used as a repair material for deteriorated concrete decks in road bridges and the like (see, for example, Patent Document 1).

Then, in the work of repairing deteriorated concrete floor slabs using ultra-high-strength fiber-reinforced concrete, for example, a kneading device such as a mixer formed by kneading ultra-high-strength fiber-reinforced concrete at the construction site is suitable. It can be used as an on-board plant, prepacked concrete premix material and steel fiber are used as materials, and concrete premix material is kneaded with water, a water reducing agent, etc., and then packed in a box or bag. The manufacturing process of ultra-high-strength fiber-reinforced concrete is carried out, in which the steel fibers are put into a kneading device and further kneaded.

Japanese Unexamined Patent Publication No. 2013-91982

Satoshi Aiura and 2 others, "Development of high-performance and high-durability bridge using ultra-high-strength fiber reinforced concrete (UFC)", [online], [Search on April 5, 4th year of Reiwa], Internet <URL: http //library.jsce.or.jp/jsce/open/00984/2010/2010-0043.pdf ＞

On the other hand, for example, when a boxed or bagged steel fiber is put into a kneading device such as a mixer in which a concrete premix material is kneaded together with a water reducing agent or the like at a construction site, the boxed or bagged steel fiber is packed. Since the steel fibers are lumped and entangled in a lump, it is necessary to disassemble them so that they can be put into the kneading device. For this reason, a charging device has also been developed that enables the steel fibers that have been packed in boxes or bags and are entangled in a lump shape to be loaded into the kneading device in a disassembled state (for example, FIGS. 8A and 8B). reference).

In the conventional steel fiber feeding device 50 shown in FIGS. 8A and 8B, the holding box portion 51 for holding the steel fibers in a state of being thrown into lumps and entangled in a lump, and the held steel are held. A flue 53 that can move forward and backward in the lateral direction is installed at the boundary between the feeding box portion 52 and the feeding box portion 52 that feeds the fibers into the kneading device 54 in a separated state. By pushing and pulling the flue 53 back and forth while moving above the kneading device 54, the steel fibers held in the holding box section 51 are separated via the flue 53, and the delivery box section 52 Therefore, it can be supplied to the kneading device 54.

However, in the above-mentioned conventional steel fiber feeding device, when the steel fibers are sent to the kneading device 54 in a disassembled state, the work performed by the worker while repeatedly pushing and pulling the flue 53 from both sides back and forth, and the flue 53. Since it is necessary to hit the steel fiber with a hammer, it takes a lot of time and effort, and since it is a manual work, the steel fiber is efficiently separated while moving the flue 53 finely back and forth. It requires a high degree of skill to be able to be sent to the kneading device 54. In addition, skill is required to select the mesh size of the flue 53, and when the worker pushes and pulls the flue 53, steel fibers are scattered around the gap between the flue 53 and the flue 53, which is wasteful. It may become or adhere to clothing.

The present invention makes it possible to efficiently disperse entangled steel fibers into a kneading device without requiring a lot of time and effort and without requiring a high degree of skill, and at the same time, it is possible to send steel to the surroundings. It is an object of the present invention to provide a steel fiber input device capable of effectively avoiding the scattering of fibers.

INDUSTRIAL APPLICABILITY The present invention is a steel that enables the steel fibers that are entangled in a lump, which has been boxed or bagged, to be put into a kneading device in a disassembled state when the ultra-high-strength fiber-reinforced concrete is kneaded and formed. A hollow box body in which the upper end surface and the lower end surface are open surfaces, and an upper grid-like mesh material and a lower grid arranged inside the hollow box body at intervals in the vertical direction. It is composed of a mesh material and a vibrator that vibrates the upper grid mesh material and the lower grid mesh material. The upper grid mesh material is a rectangle having a side of 50 to 150 mm. The lower grid-like mesh material has a mesh having a shape, and the lower grid-like mesh material has a rectangular mesh having a side of 15 to 50 mm, which is smaller than the upper grid-like mesh material, and the upper stage. The grid-like mesh material and the lower grid-like mesh material have achieved the above-mentioned object by providing a steel fiber feeding device arranged in a state of maintaining an interval of 100 to 600 mm in the vertical direction.

In the steel fiber feeding device of the present invention, a parallel mesh material made of a plurality of linear members is arranged in a vertical intermediate portion between the upper grid mesh material and the lower lattice mesh material. Is preferable.

Further, in the steel fiber input device of the present invention, it is preferable that the linear member is made of a wire material, a steel rod, a steel wire material, or an angle steel.

Further, in the steel fiber feeding device of the present invention, it is preferable that the lower grid-like mesh material is made of an uneven wire material.

Furthermore, in the steel fiber input device of the present invention, it is preferable that the vibrator is attached to the inner surface or the outer surface of the hollow box body.

Further, in the steel fiber input device of the present invention, the positions of the vibrations do not overlap when the plurality of vibrations arranged in the upper stage and the plurality of vibrations arranged in the lower stage are viewed in a plan view. As such, it is preferable that they are arranged in a staggered manner.

Further, in the steel fiber input device of the present invention, the vibration machine has the upper grid mesh material or the lower grid mesh material between the lower plate bonded to the top surface portion thereof and the lower plate. It is preferable that the upper plate to be superposed on the lower plate is bolted to the upper grid mesh material and the lower grid mesh material, respectively.

Furthermore, it is preferable that the steel fiber feeding device of the present invention is provided with a guide hopper portion in which the hollow box body is provided in an annular shape at the upper end portion so as to project outward diagonally upward.

Further, the steel fiber feeding device of the present invention is provided with a base plate attached by projecting laterally outward from the opening peripheral edge of the lower opening surface of the hollow box body in an annular shape. It is preferable that anti-vibration materials are attached to the lower surface of the vehicle at at least four locations on the peripheral surface thereof.

According to the steel fiber input device of the present invention, it is possible to efficiently disassemble the entangled steel fibers and feed them into the kneading device without requiring a lot of time and labor and without requiring a high degree of skill. At the same time, it is possible to effectively prevent the steel fibers from scattering around.

It is a perspective view of the steel fiber input device which concerns on one preferable embodiment of this invention. It is a perspective view explaining the assembly situation of the steel fiber input device of FIG. It is a perspective view explaining the assembly situation of the steel fiber input device of FIG. It is a front view of the steel fiber input device of FIG. It is a top view of the steel fiber input device of FIG. It is a side view of the steel fiber input device of FIG. It is a schematic perspective view explaining the other mounting situation of a vibrating device. (A) and (b) are schematic perspective views explaining the conventional steel fiber input device.

The steel fiber input device 10 according to a preferred embodiment of the present invention shown in FIG. 1 displays a deteriorated concrete deck when the concrete deck constituting the road is deteriorated due to aging, for example, in a road bridge. It is preferably used in the work of repairing by the thickening method. In the steel fiber input device 10 of the present embodiment, the steel fibers are mixed in the concrete kneaded by the kneading device 54 (see FIG. 8 (b)) such as a mixer installed at the construction site as an on-board plant. It can be put in in a disassembled state, and is used as a device that enables smooth and efficient formation of, for example, ultra-high-strength fiber-reinforced concrete for repair.

Further, in the present embodiment, the steel fibers are brought into the construction site in a boxed or bagged state, and the steel fibers taken out from the boxed or bagged state are entangled in a lump shape. Therefore, it is necessary to send it to the kneading device in a disassembled state and put it in. The steel fiber input device 10 of the present embodiment does not require a lot of time and effort, and does not require a high degree of skill, to carry the steel fiber carried into the construction site in such a boxed or bagged state. It is provided with a function that enables the steel fibers to be efficiently disassembled from the entangled state and sent to the kneading device 54 and effectively avoids the scattering of steel fibers around the kneading device 54.

Then, in the steel fiber input device 10 of the present embodiment, when the ultra-high-strength fiber reinforced concrete is kneaded and formed, the steel fibers that are entangled in a lump that has been packed in a box or a bag are mixed in a separated state. A hollow box body 11 which is a device that can be put into a kneading device 54 (see FIG. 8B) and whose upper end surface and lower end surface are open surfaces, as shown in FIGS. 1 to 6. The upper grid mesh material 12 and the lower grid mesh material 13 arranged inside the hollow box 11 at intervals in the vertical direction, and the upper grid mesh material 12 and the lower grid mesh material 13 are vibrated. It is configured to include the vibrators 15a and 15b to be made to move. The upper grid-like mesh material 12 has a rectangular (including square-shaped) mesh having a side of 50 to 150 mm, and the lower grid-like mesh material 13 has a larger grid-like mesh material 12 than the upper grid-like mesh material 12. It has a small rectangular (including square) mesh with a side of 15 to 50 mm, and the upper grid mesh material 12 and the lower grid mesh material 13 are 100 to 600 mm in the vertical direction. It is arranged in a state where the space between them is maintained.

Further, in the present embodiment, a plurality of wires, for example, a wire material, a steel wire material, a steel rod, an angle steel, or the like are preferably formed in an intermediate portion in the vertical direction between the upper grid-like mesh material 12 and the lower grid-like mesh material 13. A parallel mesh material 14 is arranged by the linear member 14a of the above.

Further, in the present embodiment, preferably, the hollow box body 11 is provided with a guide hopper portion 16 at the upper end portion, which is provided in an annular shape so as to project diagonally upward.

Furthermore, in the present embodiment, preferably, the steel fiber input device 10 includes a base plate 17 which is provided in an annular shape so as to project laterally outward from the opening peripheral edge of the lower opening surface of the hollow box body 11. The anti-vibration material 18 is attached to the lower surface of the base plate 17 at at least four places on the peripheral portion thereof.

In the present embodiment, the steel fibers charged into the kneading device 54 are known as steel fiber materials for forming ultra-high-strength fiber-reinforced concrete, for example, having a diameter of 0.1 to 0.25 mm. It is a high-tensile short fiber having a length of about 10 to 20 mm and a tensile strength of about 2 kN / mm ² or more. Steel fibers are preferably blended in concrete in an amount of about 2 vol% to ensure considerable adhesion by matching with a dense concrete material, so that the formed ultra-high-strength fiber-reinforced concrete has an excellent fiber-reinforcing effect. It will be possible to exert it. The steel fibers are packed in a box or bag, and are entangled in a lump as a bag. It is designed to be put into the box body 11 (see FIG. 8A).

In the present embodiment, the hollow box body 11 constituting the steel fiber input device 10 has a rectangular (including square) planar shape having a size of, for example, about 500 to 1000 in length and width, and has an upper end surface and a lower end surface. It is preferably a metal box body having an open surface, and is formed so as to have a height of, for example, about 500 to 800 mm as a whole. Further, the hollow box body 11 is preferably formed by stacking three bodies of a lower box body portion 11a, a middle stage box body portion 11b, and a guide hopper portion 16 and joining and integrating them to form an upper grid shape inward. It is formed so as to include the mesh material 12 and the lower grid-like network material 13, preferably the parallel network material 14, and the upper end surface and the lower end surface are formed to be open surfaces. Here, the hollow box 11 does not necessarily have to have a rectangular (including a square) planar shape, for example, a cylindrical hollow box having a circular planar shape, an ellipse, a polygon, or the like. It may be a cylindrical hollow box body having various other planar shapes.

In the present embodiment, as shown in FIG. 2, the lower box body portion 11a forming the hollow box body 11 is a metal plate having a vertical width of, for example, about 150 mm, preferably a thin steel plate having a rectangular frame shape. By assembling to, for example, it is formed as a flat box having a square shape and a side of about 550 mm. Inside the lower end of the lower box body 11a, the lower grid mesh material 13 is attached along the lower end surface which is the opening surface, and the lower box body which is also the lower end surface of the hollow box body 11. The base plate 17 is integrally provided in an annular shape so as to project laterally outward from the opening peripheral edge of the lower end surface of the portion 11a. Handle hardware 19a is attached to each of the outer surfaces of the pair of side surface portions of the lower box body portion 11a facing each other.

The lower grid-like mesh material 13 attached to the inside of the lower end portion of the lower box body portion 11a is preferably the same as the steel rod forming the mesh used for the fluid for sorting aggregates, for example, 4 mm. It is formed by crossing a plurality of uneven steel rods having a thickness of a certain diameter and wavy unevenness as an uneven wire rod in a vertical and horizontal grid pattern, and is an upper grid-like mesh material. A rectangle smaller than the mesh of 12 and having a side of about 15 to 50 mm, more preferably about 20 to 40 mm, still more preferably about 25 to 35 mm (in this embodiment, a size of 26.5 × 26.5 mm). It has a mesh of shape.

Further, the base plate 17 provided so as to project laterally from the peripheral edge of the opening on the lower end surface of the lower box body portion 11a is preferably made of a thin steel plate as a metal plate, and has an overhang width of, for example, about 120 mm to the outside. In the overhanging state, the inner edge portion is integrally joined to the opening peripheral portion of the lower surface of the lower box body portion 11a having a rectangular planar shape by welding or the like, so that the inner edge portion is continuously formed in a rectangular annular shape over the entire circumference. Then, it is attached in a state of protruding outward from the lower end portion of the lower box body portion 11a. The base plate 17 is arranged on the upper surface of the base plate 17 in close proximity to each of the four corners of the lower box body portion 11a, and four vibrators 15b are attached using bolt members or the like. .. Further, on the lower surface of the base plate 17, vibration-proofing materials 18 made of, for example, hard rubber are attached to at least four peripheral portions thereof, preferably four corner portions, by using bolt members or the like. ..

As shown in FIG. 3, the middle box body portion 11b forming the hollow box body 11 is formed by assembling a metal plate having a vertical width of, for example, about 170 mm, preferably a thin steel plate, so as to have a rectangular frame shape. Similar to the lower box body portion 11a, it is formed as a flat box body having a square shape in a plane shape, for example, having a size of about 550 mm on a side. A parallel mesh material 14 is attached to the inside of the lower end portion of the middle box body portion 11b along the lower end surface which is an opening surface.

The parallel mesh material 14 attached to the inside of the middle box body portion 11b is preferably joined with angle steel as the linear member 14a, and both end portions are joined to the inner side surfaces of one pair of facing side surface portions. At the same time, for example, a plurality of pieces (4 pieces in the present embodiment) are attached side by side in parallel with the other pair of side surface portions at a pitch of about 50 to 150 mm, so that they are provided at the lower end portion of the middle box body portion 11b. There is.

Handle hardware 19a is attached to the outer surface of the pair of opposite side surface portions of the middle box body portion 11b, and one of the diagonal positions is attached to the outer surface surface of the other pair of side surface portions facing each other. One vibrating machine 15a is attached to each of them by using a bolt member or the like so as to be offset to the corner side. The linear member 14a constituting the parallel mesh material 14 may be various other linear members such as wire material, steel wire material, steel rod, etc., in addition to angle steel.

In the lower box body portion 11a and the middle stage box body portion 11b, for example, the joining pieces 20 attached so as to project outward from the upper end edge portion or the lower end edge portion thereof are superposed, and these are joined preferably by using a bolt member. By doing so, it can be assembled as a unit in a state of being overlapped on top of each other. As the vibrators 15a and 15b attached to the base plate 17 of the lower box body 11a and the outer surfaces of the middle box body 11b, for example, the trade name "EXEN MODEL EKMIS-2P" known as a vibrator for a formwork (EXCEN). (Manufactured by the company) and the like can be preferably used.

As shown in FIGS. 1 and 4 to 6, the guide hopper portion 16 forming the hollow box body 11 is assembled with a metal plate, preferably a thin steel plate, so as to have an inverted truncated quadrangular pyramid shape. It is supposed to be obtained by. The guide hopper portion 16 projects in four directions diagonally upward from the lower end surface, which is an opening surface, having the same size and shape as the rectangular opening surface of the upper end surface of the middle box body portion 11b. By joining the four trapezoidal side inclined plates 16a together in an annular shape, for example, an upper end surface having a rectangular opening surface having a side of about 745 mm is provided, and the height is, for example, about 200 mm. It is formed to have a quadrature. Handle hardware 19b is attached to each of the outer surfaces of the pair of side surface inclined plates 16a facing each other of the guide hopper portion 16. Suspension holes 16b for locking, for example, lifting wires are formed in the central portion of the upper end portion of the four side surface inclined plates 16a.

Further, an upper grid-like mesh material 12 is attached to the inside of the lower end portion of the guide hopper portion 16 along the lower end surface which is an opening surface. The upper grid-like mesh material 12 is formed by crossing a plurality of steel wires having a diameter of, for example, about φ2 mm in a grid pattern in the vertical and horizontal directions, and is formed by crossing the mesh of the lower grid-like mesh material 13. It has a larger rectangular mesh with a side of about 50 to 150 mm, more preferably about 70 to 130 mm, still more preferably about 80 to 120 mm (in the present embodiment, a size of 100 × 100 mm). ..

The guide hopper portion 16 superimposes a joining piece 20 attached to the middle box body portion 11b, for example, protruding outward from the upper end edge portion or the lower end edge portion thereof, and preferably joins them using a bolt member. By doing so, the lower box body portion 11a joined to the middle stage box body portion 11b can be assembled as a unit in a three-stage stacking state in a state of being stacked vertically. As a result, the parallel mesh material 14 is preferably arranged in the intermediate portion between the upper grid mesh material 12 and the lower grid mesh material 13, and the guide hopper portion 16 is provided at the upper end portion. A hollow box body 11 having an opening surface at an end surface and a lower end surface, an upper grid mesh material 12 and a lower grid mesh material 13, and vibrators 15a and 15b that vibrate these grid mesh materials 12 and 13. The steel fiber input device 10 of the present embodiment, which is configured to include the above, will be formed.

The steel fiber loading device 10 of the present embodiment formed as described above takes out the boxed or bagged short fibers into the hollow box body 11 via the guide hopper portion 16 and loads them (FIG. 8A). In the state of (see), the kneading device 54 can be moved to the upper part of the charging port by using the lifting device (see FIG. 8 (b)). Further, in a state where the steel fiber loading device 10 before the staple fibers are loaded is moved to the upper part of the charging port of the kneading device 54 by using the lifting device, the worker packs or bags the staples in the hollow box body 11. The packed short fibers can also be charged into the hollow box body 11 via the guide hopper portion 16.

After that, in the present embodiment, the upper grid-like mesh material of the steel fiber input device 10 in which the short fibers that are lumped and entangled in a lump shape are accommodated, which is moved to the upper part of the input port of the kneading device 54. 12, The lower grid mesh material 13 and the parallel mesh material 14 are vibrated by driving the vibrators 15a and 15b, so that the contained short fibers are efficiently separated and kneaded. It becomes possible to put it in 54 and supply it.

That is, according to the steel fiber feeding device 10 of the present embodiment, the short fibers that have been thrown into the hollow box body 11 and are lumped into lumps and are caught in the upper lattice-like mesh material 12 without falling. As the upper grid mesh material 12 vibrates, it falls downward toward the lower grid mesh material 13 in a state of being subdivided into lumps of a size that can pass through the mesh of the upper grid mesh material 12. It will be. Further, even if the subdivided staple fibers are caught on the lower grid mesh material 13, the upper grid mesh material 12 vibrates, so that the short fibers are further separated and smoothly put into the kneading device 54. Will be done.

Further, according to the steel fiber input device 10 of the present embodiment, the short fibers are densely packed on four sides by the guide hopper portion 16, the middle stage box body portion 11b, and the lower stage box body portion 11a, which are integrated in three stages. It is designed to pass through the internal space of the hollow box body 11 partitioned by the above from the top to the bottom, and the worker does not have to push and pull the fiber back and forth, so from the gap with the fiber. It is possible to effectively prevent the steel fibers from being scattered around and being wasted or adhering to clothes.

Therefore, according to the steel fiber input device 10 of the present embodiment, the steel fibers entwined in a lump are efficiently disassembled and kneaded without requiring a lot of time and labor and without requiring a high degree of skill. It becomes possible to feed the steel fiber to the device 54 and effectively prevent the steel fiber from scattering around.

Further, according to the present embodiment, the parallel mesh material 14 composed of a plurality of linear members 14a is preferably arranged in the vertical intermediate portion between the upper grid mesh material 12 and the lower grid mesh material 13. Therefore, preferably, by vibrating the parallel mesh material 14, the steel fibers entwined in a lump can be sent to the kneading device 54 in a more efficiently disassembled state.

Further, according to the present embodiment, the two vibrators 15a attached to the outer surface of the middle box body portion 11b and arranged in the upper stage and the base plate 17 of the lower box body portion 11a are attached to the lower stage. Since the four vibration machines 15b arranged in the above are preferably arranged alternately so that their positions do not overlap when viewed in a plan view, it is possible to avoid a decrease in vibration due to the overlap of vibration waveforms. As a result, the contained short fibers can be more effectively disassembled.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, it is not always necessary to arrange the parallel mesh material in the vertical intermediate portion between the upper grid mesh material and the lower grid mesh material. Further, the hollow box body does not necessarily have to have a guide hopper portion at the upper end portion, and does not necessarily have to have a base plate extending outward from the opening peripheral edge portion of the lower opening surface of the hollow box body. Further, as shown in FIG. 7, for example, in the vibrator 15, the upper grid mesh material 12 or the lower grid mesh material 13 is formed between the lower plate 22a joined to the top surface portion thereof and the lower plate 21a. It is also possible to attach the upper plate 21b, which is overlapped with the lower plate 21a, to the upper grid mesh material 12 and the lower grid mesh material 13, respectively, by bolt-joining them in a state of sandwiching the lower plate 21a.

10 Steel fiber input device 11 Hollow box body 11a Lower box body 11b Middle box body 12 Upper grid mesh material 13 Lower grid mesh material 14 Parallel mesh material 14a Linear members 15, 15a, 15b Vibration machine 16 Guide hopper Part 16a Side tilt plate 16b Suspension hole 17 Base plate 18 Anti-vibration material 19a, 19b Handle hardware 20 Joint piece 21a Lower plate 21b Upper plate 54 Kneading device

Claims (9)

Ultra-high-strength fiber Reinforced concrete is a steel fiber input device that enables the steel fibers that were entwined in a lump that was packed in a box or bag to be put into the kneading device in a disassembled state when kneading and forming. There,
A hollow box body in which the upper end surface and the lower end surface are open surfaces, an upper grid-like mesh material and a lower grid-like mesh material arranged at intervals in the vertical direction inside the hollow box body, and these. It is configured to include an upper grid mesh material and a vibrator that vibrates the lower grid mesh material.
The upper grid mesh material has a rectangular mesh having a side of 50 to 150 mm, and the lower grid mesh material is smaller than the upper grid mesh material, and has a side of 15 to 15 to. Steel having a rectangular mesh having a size of 50 mm, and the upper grid mesh material and the lower grid mesh material are arranged in a state of maintaining an interval of 100 to 600 mm in the vertical direction. Fiber input device. The steel fiber input device according to claim 1, wherein a parallel mesh material made of a plurality of linear members is arranged in a vertical intermediate portion between the upper grid mesh material and the lower grid mesh material. The steel fiber input device according to claim 2, wherein the linear member is made of a wire material, a steel wire material, a steel rod, or an angle steel. The steel fiber feeding device according to any one of claims 1 to 3, wherein the lower grid-like mesh material is made of an uneven wire material. The steel fiber input device according to any one of claims 1 to 3, wherein the vibration machine is attached to an inner surface or an outer surface of the hollow box body. The claim that the vibration machines are arranged alternately so that the plurality of vibration machines arranged in the upper stage and the plurality of vibration machines arranged in the lower stage do not overlap when viewed in a plan view. The steel fiber input device according to any one of 1 to 3. The vibration machine is superposed on the lower plate in a state where the upper grid mesh material or the lower grid mesh material is sandwiched between the lower plate joined to the top surface portion thereof and the lower plate. The steel fiber input device according to any one of claims 1 to 3, which is attached to the upper grid mesh material and the lower grid mesh material, respectively, by bolting the upper plate to the upper plate. The steel fiber feeding device according to any one of claims 1 to 3, wherein the hollow box body is provided with a guide hopper portion provided in an annular shape at an upper end portion so as to project outward diagonally upward. A base plate is provided so as to project laterally outward from the opening peripheral edge of the lower opening surface of the hollow box body and provided in an annular shape, and the lower surface of the base plate has at least 4 of the peripheral edges thereof. The steel fiber input device according to any one of claims 1 to 3, wherein a vibration-proof material is attached to the place.

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