| 摘要 |
PROBLEM TO BE SOLVED: To provide a chute for carrying concrete in a vertically dropping manner which can decrease the dropping speed of concrete, and prevent separation, destruction and damage of aggregate. SOLUTION: Shelf-like projecting parts 2, 2 are provided at the inner surface of a concrete carrying chute 1. Concrete 10 dropping in the chute 1 contacts the parts 2, 2 to change its moving direction. Repetition of kneading is made to prevent separation of aggregate. Due to the contact between the dropping concrete 10 and the parts 2, 2, the dropping speed thereof decreases, and thus impact of collision between the aggregate and the chute 1 decreases to prevent cracking, destruction of the aggregate as well as damage of the chute 1. Since the concrete 10 is deposited on the parts 2, 2, there occurs collision between the deposited concrete 10 and the dropping concrete 10 so that the dropping concrete 10 does not collide with the parts 2, 2 directly thereafter, thereby generating less wear in the parts 2, 2.
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