| 摘要 |
PROBLEM TO BE SOLVED: To provide a hopper for placing concrete, which supplies concrete between two frames and easily levels off the concrete to an even thickness. SOLUTION: This hopper 10 for placing concrete between two frames 4 arranged separately from each other, is comprised of a hopper main body 11, an open/close valve 13, and moving devices 20. The hopper main body 11 has a laterally elongated discharge port 12 in the bottom surface thereof. A discharge port 12 is arranged almost orthogonal to the frames 4, and its width dimension corresponds to an interval between the two frames 4. The open/close valve 13 is attached to the hopper main body 11 for opening/closing the discharge port 12. The moving devices 20 are attached to both sides of the hopper main body 11 and placed on upper surfaces of the respective frames 4, to thereby move the hopper main body 11 along the frames 4.
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