Concrete mixing truck anti-rollover system
First Claim
1. A method for preventing rollovers of a moving concrete mixing truck, the concrete mixing truck of a type having a cab, a chassis, and a drum for mixing concrete supported by the chassis, the drum attached between a front pedestal and a rear pedestal connected to a frame of the chassis wherein a drum motor controls rotation of the drum, the method comprising:
- rotating the drum in a clockwise direction at a speed based upon a transmission speed of the concrete mixing truck;
sensing input data representative of operating conditions of the concrete mixing truck;
comparing the input data relative to stored data indicative of a rollover to determine whether the truck is in a potential rollover condition; and
initiating a corrective action unrelated to a speed of the truck based on the compared data to prevent a rollover of the truck, wherein the step of initiating a corrective action comprises transmitting a signal to a drum relief valve associated with a hydraulic line to the drum motor.
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Accused Products
Abstract
An anti-rollover system is used with a concrete mixing truck with a mixing drum, in particular during turning maneuvers, for preventing rollovers by the truck. The anti-rollover system is comprised of one or more sensors on the truck which generate an input signal representative of the truck'"'"'s operating conditions indicative of a rollover condition. The system compares the sensor signal against stored data indicative of rollover conditions and if necessary initiates corrective action to prevent the truck from rolling over. Corrective action includes stopping, or in some circumstances slowing, rotation of the drum carrying a concrete load. With mixing trucks including a booster axle system, corrective action may additionally or separately include unloading the booster axle.
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Citations
21 Claims
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1. A method for preventing rollovers of a moving concrete mixing truck, the concrete mixing truck of a type having a cab, a chassis, and a drum for mixing concrete supported by the chassis, the drum attached between a front pedestal and a rear pedestal connected to a frame of the chassis wherein a drum motor controls rotation of the drum, the method comprising:
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rotating the drum in a clockwise direction at a speed based upon a transmission speed of the concrete mixing truck; sensing input data representative of operating conditions of the concrete mixing truck; comparing the input data relative to stored data indicative of a rollover to determine whether the truck is in a potential rollover condition; and initiating a corrective action unrelated to a speed of the truck based on the compared data to prevent a rollover of the truck, wherein the step of initiating a corrective action comprises transmitting a signal to a drum relief valve associated with a hydraulic line to the drum motor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A control system for preventing rollovers of a moving concrete mixing truck having a rotating drum, the control system comprising:
a sensor associated with the truck, the sensor capable of generating a signal representative of an operating condition of the truck indicative of a rollover; a hydraulic system comprising a hydraulic drum motor and a drum hydraulic relief valve in communication with the hydraulic drum motor; and a computer in communication with the sensor and the drum hydraulic relief valve, the computer capable of generating an output signal to the drum hydraulic relief valve in response to the sensor signal. - View Dependent Claims (8)
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9. An anti-rollover system for preventing rollovers of a moving concrete mixing truck of a type having a cab, a chassis, and a drum for mixing concrete supported by the chassis, the drum attached between a front pedestal and a rear pedestal connected to a frame of the chassis wherein a drum motor controls rotation of the drum, the anti-rollover system comprising:
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sensing means for generating a first signal representative of an operating condition of the truck; processing means communicating with the sensing means for analyzing the first signal relative to stored data indicative of rollover conditions and generating a second signal representative of a corrective action; and means communicating with the processing means, unrelated to a speed of the truck, for initiating the corrective action, wherein the means for initiating corrective action comprises a hydraulic system of the truck. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for preventing rollovers of a moving concrete mixing truck, the concrete mixing truck of a type having a cab, a chassis, and a drum for mixing concrete supported by the chassis, the drum attached between a front pedestal and a rear pedestal connected to a frame of the chassis wherein a drum motor controls rotation of the drum, the method comprising:
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rotating the drum in a clockwise direction at a speed based upon the transmission speed of the concrete mixing truck; sensing input data representative of operating conditions of the concrete mixing truck; comparing the input data relative to stored data indicative of a rollover to determine whether the truck is in a potential rollover condition; and initiating a corrective action to a hydraulic system of the truck, unrelated to a speed of the truck, based on the compared data to prevent a rollover of the truck.
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21. An anti-rollover system for preventing rollovers of a moving concrete mixing truck of a type having a cab, a chassis, and a drum for mixing concrete supported by the chassis, the drum attached between a front pedestal and a rear pedestal connected to a frame of the chassis wherein a drum motor controls rotation of the drum, the anti-rollover system comprising:
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sensing means for generating a first signal representative of an operating condition of the truck; processing means communicating with the sensing means for analyzing the first signal relative to stored data indicative of rollover conditions and generating a second signal representative of a corrective action; and means communicating with the processing means, unrelated to the speed of the truck, for automatically initiating the corrective action without operator input.
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Specification