Self-erecting mobile concrete batch plant

A mobile, self-erecting concrete batch plant comprising:

• a roadway transportable supporting base member unit and a separate roadway transportable cement batching tower unit, said tower unit being arranged for transport in supine position relative to a roadway and to be pivotally attached to said base member unit and rotatably raised to an upright operating position relative to said supporting base member unit;
• said cement batching tower unit including tower supporting framework having spaced apart upright members defining a side thereof and having at least one tower lifting ram including one end secured to a respective upright member, said lifting ram including a hydraulically operated, longitudinally extendible, plunger, said plunger having pivot attachment means at the distal end thereof, said tower unit further including a pair of pivot supporting clevis members, each clevis member including coaxial apertures for receiving a pivot pin and being respectively secured to an upright member;
• said supporting base member unit including an elongate carriage framework having a forward end including detachable hitching means for transportation thereof, at least one bin for transporting aggregate material, an endless belt conveyor, a plurality of hydraulically operated support legs arranged to lift and support said base member unit to an elevated onsite operating position, a supporting pivot pin and a pair of clevis members extending laterally from said carriage framework and including coaxial apertures arranged for axial alignment with the respective coaxial apertures of the tower supporting clevis members for receiving said supporting pivot pin inserted in said aligned apertures when said base member unit has been raised to elevated operating position, and said base member unit framework further including attachment means spaced from said pivot pin clevis members and arranged for pivotal attachment with the pivot attachment means on said lifting ram plunger during rotation of said tower unit from its supine position to upright operating position.