A drum drive system includes a control system configured to control a prime mover, a variable displacement pump mechanically coupled to the prime mover, and a variable displacement motor fluidly coupled to the variable displacement pump. The control system has programmed instructions to operate the prime mover, the variable displacement motor, and the variable displacement pump to drive a drum of the vehicle; acquire pressure data indicative of a pressure of a fluid flowing between the variable displacement pump and the variable displacement motor; and in response to the pressure of the fluid being below a threshold pressure and while maintaining a drum speed of the drum: increase a pump displacement of the variable displacement pump, reduce a speed of the prime mover, and reduce a motor displacement of the variable displacement motor.

A drum control system includes one or more processing circuits having programed instructions to control a drum assembly to rotate a drum at a first, unmixed speed to mix drum contents received by the drum where the drum contents including ingredients of a concrete mixture, acquire drum contents data indicative of a property of the drum contents from a mixture sensor and monitor the property of the drum contents as the drum rotates, acquire a target property for the drum contents upon delivery, determine a second, mixed speed based at least partially on the target property, and control the drum assembly to rotate the drum at the second, mixed speed in response to determining that the property of the drum contents indicates that the ingredients have been sufficiently mixed.

A vehicle including a chassis, a lift axle coupled to the chassis and including a tractive element, a lift actuator coupled to the lift axle, a location sensor configured to provide location data indicating a location of the vehicle, and a controller operatively coupled to the lift actuator and the location sensor and configured to control the lift actuator to reposition the lift axle based on the location data.

A vehicle includes a mixing drum rotatably coupled to a chassis, a fill level sensor configured to provide a signal indicative of a fill level of a material within the mixing drum, an axle assembly including a first tractive element, a suspension actuator coupled to the axle assembly and configured to apply a biasing force that forces the first tractive element into engagement with a ground surface, a lift axle including a second tractive element, a lift actuator coupled to the lift axle, and a controller. The controller is configured to calculate a target weight to be supported by at least one of the first tractive element or the second tractive element based on the fill level of the material within the mixing drum and control the suspension actuator to vary the biasing force based on the target weight.

The present invention relates to a vehicle for mixing concrete. The vehicle comprises: a cabin configured to allow an operator to control the vehicle, a chassis comprising a frame configured to support a load on the vehicle, the frame having a longitudinal axis that is substantially parallel to the ground, and a rotatable mixing drum supported on the chassis such that the longitudinal axis of the mixing drum is inclined relative to the longitudinal axis of the frame. The mixing drum comprises a drum ring and being configured to hold and mix a load. The chassis comprises a rear pedestal on which the drum ring of the mixing drum is supported, and the rear pedestal comprises a pair of drum rollers configured to contact the drum ring. The vehicle further comprises at least one stop configured to prevent lateral movement of the rotatable mixing drum beyond a predetermined distance from a centreline of the vehicle.