Self-propelled surface cleaning machine and method for operating a self-propelled surface cleaning machine
First Claim
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1. A self-propelled surface cleaning machine, comprising:
- a floor cleaning device;
a steerable front wheel;
a steering device associated with the front wheel, said steering device comprising a steering wheel and a mechanical steering rod connecting the front wheel and the steering wheel;
a steering angle sensor device which senses an angular position of the steering wheel or steering rod;
a rear wheel device having at least one left rear wheel and at least one right rear wheel;
a first drive device for driving the front wheel;
a second drive device for driving the rear wheel device;
a differential device for the rear wheel device that allows different speeds of rotation for the at least one left rear wheel and the at least one right rear wheel; and
a control device which is operatively connected for signal communication with the steering angle sensor device, the first drive device and the second drive device, wherein the control device is configured to control the first drive device and the second drive device depending on signals from the steering angle sensor device;
wherein the control device is configured to operate in a first operational mode which blocks the second drive device at a steering angle of 90°
±
5°
relative to a straight ahead travel position of the front wheel; and
wherein the control device is configured to operate in a second operational mode in which the front wheel, the at least one left rear wheel and the at least one right rear wheel have the same velocity.
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Abstract
A self-propelled surface cleaning machine is proposed, including a floor cleaning device, a steerable front wheel, a steering device associated with the front wheel, a rear wheel device having at least one left rear wheel and at least one right rear wheel, a first drive device for driving the front wheel, a second drive device for driving the rear wheel device and a differential device for the rear wheel device that allows different speeds of rotation for the at least one left rear wheel and the at least one right rear wheel.
10 Citations
23 Claims
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1. A self-propelled surface cleaning machine, comprising:
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a floor cleaning device; a steerable front wheel; a steering device associated with the front wheel, said steering device comprising a steering wheel and a mechanical steering rod connecting the front wheel and the steering wheel; a steering angle sensor device which senses an angular position of the steering wheel or steering rod; a rear wheel device having at least one left rear wheel and at least one right rear wheel; a first drive device for driving the front wheel; a second drive device for driving the rear wheel device; a differential device for the rear wheel device that allows different speeds of rotation for the at least one left rear wheel and the at least one right rear wheel; and a control device which is operatively connected for signal communication with the steering angle sensor device, the first drive device and the second drive device, wherein the control device is configured to control the first drive device and the second drive device depending on signals from the steering angle sensor device; wherein the control device is configured to operate in a first operational mode which blocks the second drive device at a steering angle of 90°
±
5°
relative to a straight ahead travel position of the front wheel; andwherein the control device is configured to operate in a second operational mode in which the front wheel, the at least one left rear wheel and the at least one right rear wheel have the same velocity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification