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US 8,465,105 B2Granted
Control system for cutter drum
AssigneeCMI Terex Corporation
InventorsCarl D. Parker, E. Leroy Henderson
Life of this patent
Estimating the term…
Abstract
A work vehicle including an engine and a transmission operatively engaging the engine. The transmission has at least one input shaft and at least one output shaft, wherein a ratio of a rotational speed of the output shaft with respect to a rotational speed of the input shaft may be changed by said transmission. The work vehicle further includes a cutter drum operatively engaging said transmission and a controller, wherein the controller selects the transmission ratio based on an input of a user of the work vehicle.
Claims31
A work vehicle adapted for use in pavement removing operations comprising:
- a self propelled chassis;
- an engine mounted to said chassis;
- a first transmission operatively engaging said engine, said first transmission having at least one input shaft driven by said engine and at least one output shaft, wherein a ratio of a rotational speed of said output shaft with respect to a rotational speed of said input shaft may be selectively changed in said first transmission;
- a cutter drum having a plurality of cutter teeth located around the outer periphery of said drum, said cutter drum operatively engaging said output shaft of said first transmission, wherein a rotational speed of said cutter drum is proportional to the rotational speed of said output shaft of said first transmission;
- and
- an electronic controller connected to said first transmission, wherein said electronic controller selects said ratio in said first transmission based on an input of a user of said work vehicle.
3 more elements
A work vehicle comprising:
- an engine;
- a first transmission engaging said engine, said first transmission having a plurality of input/output ratios;
- a cutter drum connected to said first transmission, wherein an output of said first transmission is directly proportional to the rotational speed of said cutter drum;
- a second transmission engaging said engine, said second transmission having a plurality of input/output ratios, wherein an output of said second transmission is directly proportional to the groundspeed of said work vehicle;
- and
- an electronic controller, wherein said electronic controller selects the input/output ratios of said transmissions based on the input of a user of said work vehicle, wherein said electronic controller is selectively placeable in a manual or automatic mode based on the input of said user.
3 more elements
A work vehicle comprising:
- an engine;
- a first transmission connected to said engine, said first transmission having a plurality of input/output ratios;
- a cutter drum connected to an output of said first transmission;
- a hydrostatic transmission connected to said engine, wherein an output of said hydrostatic transmission is directly proportional to the groundspeed of said work vehicle, and wherein said hydrostatic transmission drives a plurality of wheels or crawler tracks;
- an electronic controller, wherein said electronic controller selects the input/output ratio of said first transmission based on the input of a user of said work vehicle, wherein said electronic controller is selectively placeable in a manual or automatic mode based on the input of said user, wherein in said manual mode said electronic controller maintains a ratio between a speed of said engine and a speed of said cutter drum, and in said automatic mode said electronic controller maintains a desired ratio between the rotational speed of said cutter drum and a ground speed of said work vehicle by selecting an appropriate input/output ratio in said first transmission in response to a change in the ground speed of said work vehicle;
- a keypad connected to said electronic controller, wherein said keypad may be used to enter said user inputs to said electronic controller.
3 more elements
Dependencies are inferred from the claim text.