Pushing apparatus for pushing a wall form assembly

A pushing apparatus for pushing a wall form assembly when moving the wall form assembly on a floor of a concrete structure, the wall form assembly including a plurality of vertical channel pieces coupled detachably side by side to one another, and a plurality of horizontal reinforcement members interconnected detachably to each other, each of the reinforcement members having opposite top and bottom sides, a mounting side which is mounted detachably on the vertical channel pieces, and a free side opposite to the mounting side, the wall form assembly further including a plurality of roller assemblies mounted on the reinforcement members to facilitate adjustment of a position of the wall form assembly on the floor, said pushing apparatus comprising:

• an upright tubular seat adapted to be disposed beside the free side of one of the reinforcement members, said tubular seat having upper and lower portions and confining an axial hole through said upper and lower portion, said upper portion having an internally threaded top section and being provided with an upper clamping plate, said lower portion being provided with a lower clamping plate, said upper and lower clamping plates being adapted to abut respectively against the top and bottom sides of said one of the reinforcement members so as to clamp cooperatively said one of the reinforcement members at the free side thereof;
• a rotary shaft disposed rotatably in said axial hole of said tubular seat, said shaft having an upper end and a lower end that extends out of said tubular seat and that has a base plate mounted securely thereon, said base plate having a first portion adjacent to said lower clamping plate and a second portion opposite to said first portion;
• a foot unit including:
• a generally horizontal pivot plate disposed below and mounted pivotally to said base plate about a horizontal axis, said pivot plate having a first section adjacent to said first portion of said base plate and a second section opposite to said first section;
• an inclined support inclining downwardly from said second section of said pivot plate in a direction away from said first section of said pivot plate, said inclined support having a lower end portion that is adapted to contact the floor of the concrete structure;
• and a spring member interposed between said second portion of said base plate and said inclined support;
• and
• an operating member including a threaded shank which has a lower section that extends threadedly into said axial hole of said tubular seat via said internally threaded top section of said upper portion and that is coupled rotatably to said upper end of said shaft;
• whereby, when said threaded shank is rotated so as to extend a longer length of said shaft out of said tubular seat, said foot unit is forced toward the floor against action of said spring member and pivots so as to generate a pushing force that is applied by said tubular seat on said one of the reinforcing members to facilitate adjustment of the position of the wall form assembly on the floor.