Abstract:
A method for clearing obstructions in a silo having a reciprocating frame uses an obstruction clearance mode. The method includes driving at least one frame in a reciprocal motion across a silo floor until sensing an indication that at least one frame has encountered an obstruction. Upon sensing the indication of obstruction, an obstruction clearance mode is initiated in an attempt to clear the obstruction.
Abstract:
A silo with a reciprocating frame includes a blanking plate that is capable of limiting the amount of material released from the silo. A blanking plate is attached to at least one reciprocating frame and is configured to substantially cover an opening in a floor when the reciprocating frame is centered above the opening in the floor.
Abstract:
A system for the transport of high solids sludge includes a positive displacement pump for pumping sludge through a pipeline. The volume of sludge transported is accurately measured by determining the fill percentage by using a material flow signal, measured time intervals, hydraulic fluid pressure, or hydraulic fluid flow rate during each pumping cycle.
Abstract:
A system and method for controlling operation of a sludge material handling system is disclosed. The sludge material handling system includes a positive displacement piston/cylinder pump, a sludge material feed system which delivers sludge material to the pump, and a sludge material disposal system which receives and disposes of sludge material from the pump. A first parameter is sensed, the first parameter bearing a known relationship to an actual volume of sludge material delivered during a pumping cycle. An output value is determined from the first parameter. A control signal is provided as a function of the output value.
Abstract:
A system for the transport of high solids sludge includes a positive displacement pump for pumping sludge through a pipeline. The volume of sludge transported is accurately measured by determining the fill percentage during pumping cycle.
Abstract:
A self-climbing screed system for use with a self-climbing boom system that includes a mast that has a tower and a rail that is connected to an outer surface of the tower, extends along a length of the tower, and has spaced holes, includes a screed. The screed includes a turntable configured to be positioned around the mast, the turntable being mountable to and dismountable from the mast, a screed boom having a proximal end and a distal end, the proximal end being connected to the turntable, and a screed head connected to the distal end of the screed boom.
Abstract:
A concrete pumping truck having a forward end and a rear end with a hopper attached at the rear end of the concrete pumping truck comprises an auxiliary axle system pivotally attached to the rear end of the truck adjacent the hopper, the auxiliary axle system comprising a pair of pivotable wheels movable between a first position in contact with a ground surface and a second position elevated above the ground surface.
Abstract:
A system for rapid replacement of abrasive in machinery which uses the abrasive to finish the surfaces of workpieces that pass through the machinery on a belt, such as so-called widebelt sanders. One preferred embodiment of the system employs an abrasive material that is frictionally held on each edge to mounts. The position of the mounts may be varied to increase or decrease the tension of abrasive material against the working surface of the platen, that the assembly may be removed from the apparatus. In another embodiment, the abrasive material is formed with integral, permanent mounts on the edges of the abrasive material, so that the entire combination may be supplied or replaced as a unit. A variety of configurations of mounts may be used.
Abstract:
A method of detecting an air pocket in a concrete pump and minimizing the effect of the nozzle and boom reaction as the air pocket reaches the end of the boom. The hydraulic pressure of the pump is monitored to determine when a pump stroke contains air. Upon detection of air in a pump stroke, an alarm is sounded and the pump is slowed to minimize the effect of the air pocket when it reaches the nozzle of the boom.
Abstract:
A remote warning system is provided for signalling to occupants of a garbage dumpster the approach of a garbage truck. A first warning device is carried by the garbage truck. The first warning device has a transmitter for transmitting a first signal indicative of the approach of the garbage truck. A second warning device attached to the garbage dumpster includes a receiver for receiving the first signal and for providing an output in response to receipt of the first signal. An alarm in the second warning device is coupled to the receiver for warning occupants of the garbage dumpster, in response to the output of the receiver, of the approach of the garbage truck.