초록 ▼

A portable concrete plant capable of producing up to 240 to 300 cubic yards or more of concrete per hour is disclosed in which two hauling trailers, a mixer trailer and an aggregate trailer, both serve as the transport vehicles and as foundation for the completely erected plant. The aggregate traile

A portable concrete plant capable of producing up to 240 to 300 cubic yards or more of concrete per hour is disclosed in which two hauling trailers, a mixer trailer and an aggregate trailer, both serve as the transport vehicles and as foundation for the completely erected plant. The aggregate trailer includes three bins used respectively for sand, fine aggregate and course aggregate. Weigh belts convey weighed and humidity measured amounts of sand and aggregate from discrete open top bins to a batch aggregate loading belt for batch loading of a compulsory mixer on the mixer trailer. The side of the aggregate trailer is provided with a bulkhead for an earthen or gravel ramp with large width bins enabling a single loader to supply the high volume of sand and aggregate required. The mixer trailer supports a twin shaft compulsory mixer on a foundation pad which is top loading for concrete constituents and bottom emptying to an elevating and concrete discharge point to awaiting trucks. Pivotally mounted to the mixer trailer from a horizontal transport disposition to a vertically erect operating position are a multi-compartment air loaded, gravity feed cement silo, and weigh hopper for batch weighing of concrete and discharge to the underlying compulsory mixer. Provision is made for the axles located at the rear of the trailer to steer so that precision joining of the plant components can easily occur.

대표청구항 ▼

[ What is claimed is:] [1.] A mixer trailer comprising in combination:a trailer chassis having transporting wheels at a first end and a coupling to a tractor at a second end;a compulsory mixer mounted to the trailer chassis having a lower constituents discharge configured to open and close for batch

[ What is claimed is:] [1.] A mixer trailer comprising in combination:a trailer chassis having transporting wheels at a first end and a coupling to a tractor at a second end;a compulsory mixer mounted to the trailer chassis having a lower constituents discharge configured to open and close for batch mixing of concrete and an overlying opening for receiving constituents, the compulsory mixer for receiving constituents through the overlying opening, mixing the constituents to form mixed constituents, and discharging the mixed constituents through the lower constituents discharge;the compulsory mixer is mounted adjacent the second end of the mixer trailer chassis,a jeep frame having jeep wheels at one end and a fifth wheel connected to the tractor at the other end supports the chassis at the coupling to the tractor at the second end of the trailer chassis, the jeep frame pivotal on the trailer chassis at the second end in order to evenly distribute the weight of the compulsory mixer when traveling over the ground between the tractor and the jeep wheels;a mixed constituent conveyor having an end underlying the lower constituents discharge of the compulsory mixer for receiving the mixed constituents and transporting the mixed constituents to a discharge end of the conveyor;a cement silo for mounting on the trailer chassis and moveable between a horizontal transport position and a vertical gravity feed position overlying the compulsory mixer, the cement silo when in the vertical gravity feed position having at least one inlet and at least one bottom outlet for gravity discharge of cement;a weigh hopper mounted between the bottom outlet of the cement silo and the overlying opening of the compulsory mixer to enable the gravity discharge of cement to be weighed before discharge into the overlying opening of the compulsory mixer; and,a pad mounted along the bottom of the trailer chassis for forming a foundation support for the mixer, the cement silo and weigh hopper.