Snow track preparation machine with mill mounted in a revolving manner

• US 6,637,134 B2
• Filed: 02/27/2002
• Issued: 10/28/2003
• Est. Priority Date: 03/30/2001
• Status: Expired due to Term

• Current Assignee: Prinoth GmbH - Srl
• Original Assignee: Prinoth GmbH (Prinoth SRL)
• Inventors: Hammerle, Ulrich
• Primary Examiner(s): Pezzuto, Robert E.
• Assistant Examiner(s): Beach, Thomas A.
• Application Number:
  US10/084,695
• Publication Number:
  US 20020139013A1
• Time in Patent Office: 608 Days
• Field of Search: 372/19, 372/23, 372/32, 372/34, 373/48, 372/44, 372/45, 372/47, 373/82, 374/13, 374/14, 374/15, 371/96, 701/50
• US Class Current: 37/234
• CPC Class Codes: E01H 4/02 for sporting purposes, e.g. preparation of ski trails; Construction of artificial surfacings for snow or ice sports construction of ice skating rinks E01C13/102; Trails specially adapted for on-the-snow vehicles, e.g. devices adapted for ski-trails production of snow or ice for winter sports or similar recreational purposes F25C3/00

Abstract

Snow track preparation machine with mill installed in a revolving manner and including a pump driven by a power source, a hydraulic motor connected to the pump on the delivery side and the return side, an actuator supported on the assembly frame and realized for rotation of the mill and driving wheels. The power source is made up of a motor (2) which drives the driving wheels (5,6) and the pump (9) and actuator (16) are influenced by a control unit (17) connected to a sensor of motor rpm n_D, to a sensor of the rpm of the driving wheels n_a1 and n_a2, to a sensor for the hydraulic motor of the mill and an actuator path sensor with the control unit (17) connecting the magnitudes detected by the sensors by means of an algorithm and controlling on the basis thereof the pump (9) and the actuator.

Claims

1. Snow track preparation machine with mill installed in a revolving manner and including a pump driven by a power source, a hydraulic motor connected to the pump on the delivery side and the return side, an actuator supported on the assembly frame and realized for rotation of the mill and driving wheels characterized by the fact that the power source is made up of a motor (2) which drives the driving wheels (5,6) and the pump (9) and the actuator (16) are influenced by a control unit (17) connected to a sensor of motor rpm n_D with a sensor of the rpm of the driving wheels n_a1 and n_a2 with a sensor for the hydraulic motor of the moll and a sensor for the path actuator with the control unit (17) connecting the magnitudes detected by the sensors by means of an algorithm and controlling on the basis thereof the pump (9) and the actuator.

2. Snow track preparation machine in accordance with claim 1 characterized in that the algorithm is made up so that the pressure in the hydrostatic mill drive (hydraulic motor 12) is held constant.

3. Snow track preparation machine in accordance with claims 1 and 2 characterized in that the power source is made up of fuel cells.

4. Snow track preparation machine in accordance with claim 1 characterized in that the algorithm is made up so that the number of mill teeth per path unit engaged in the snow is constant.

5. Snow track preparation machine in accordance with claim 1 characterized in that the algorithm is made up so that the number of mill teeth per path unit engaged in the snow and the mill torque are constant.

6. Snow track preparation machine in accordance with claim 2 characterized in that the algorithm is made up so that the number of mill teeth per path unit engaged in the snow is constant.

7. Snow track preparation machine in accordance with claim 2 characterized in that the algorithm is made up so that the number of mill teeth per path unit engaged in the snow and the mill torque are constant.