| 摘要 |
A movable member of a sliding structure for a concrete pump is provided to reduce the maintenance cost due to frequent replacement of a movable member by stably maintaining a coupling state of a coupling pipe and a friction member. A movable member of a sliding structure for a concrete pump comprises a fixed member(100) and a movable member(300). The fixed member includes a first friction member and is coupled with a front end of a concrete cylinder. The movable member is fixed to an end of an S type gate valve. The movable member includes a coupling pipe(310), a second friction member(313) made of a super-hard alloy and a third friction member(315) made of a super-hard alloy. The coupling pipe includes an outer vertical wall(315b), an insertion groove(313a) formed in the outer vertical wall, and an inner vertical wall(315a) formed in the insertion groove while facing the outer vertical wall. The second friction member is inserted into the insertion groove to be in close contact with the friction member of the fixed member.
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