| 摘要 |
A tub comprises a hopper, in the lower part of the housing of which an outlet is made for dispensing a mortar, a supporting frame, which is adjacent to the hopper housing, a sector shutter mounted with possibility of closing the outlet by a linkage system, which is equipped with a lever with a control handle of the sector shutter, a flexible element intended for transmitting the operator’s effort to the linkage system through a lever for control of operation of the sector shutter. The tub further comprises a fixed unit located on the hopper housing or on the support frame opposite the lever of the linkage system, wherein into the chute of the roller of a fixed block a flexible element is reeved, which is made in the form of a closed circuit. |
