DE102007050508A1 - Lawn turf cutting method for e.g. sports field construction, involves holding cutting plane on surface to be cut by using laser radiation for controlling height of cutting knife according to requirements, and controlling knife - Google Patents

Abstract

The method involves holding a cutting plane (15) on a surface to be cut by using laser radiation (11) for controlling height of a cutting knife (16) according to requirements. The cutting knife is controlled by a right and left actuating element (13) in a working depth (14) such that the cutting plane runs parallel to the laser radiation. The working depth is adjusted by the actuating element, which maintains a control command by a laser receiver (12). A required working depth change is determined from actual height of the cutting knife and from the difference of the laser radiation. An independent claim is also included for a device for mechanical cutting of a lawn turf.

Description

The The invention relates to a method and a device for carrying out the machine removal of turf from the ground, using under a laser beam for height adjustment at the same time an in-plane underground for relocation created by new lawn turf. Especially in sports field construction and at golf courses an aligned ground is required for the turf laying.

State of the art

Of the Procedure for creating a new lawn with turf on one aligned level by conventional methods, especially on small surfaces those with big ones Machines are not passable bar, consists of removing the old ones Lawn fashion with hand cut or with the use of Lawn cutting machines, surveying and determination of the altitude of the subsoil to be recovered, testing of the same subsoil on flatness and, if necessary, removal of excessively high layers of earth or padding and compaction of pits.

adversely In these practices, that is a labor-intensive pure Needlework is required or when using a lawn sod cutting machine when cutting the old lawn turf these only in a preestablished Strength is removed and it is therefore necessary to re-trace the subsoil to edit to get an aligned plane.

task

Of the Invention is therefore the object of a method and a Apparatus for carrying out the removal of turf and the production of the aligned new underground for to create the laying of turf in one work step.

These Task is in the method with the features of the preamble of claim 1 according to the characterizing part solved and in a device having the features of the preamble of Claim 2 according to its characterizing Part performed. The invention is based on the known method turf with the help of a swinging knife in the horizontal to cut. This knife is installed in a self-propelled machine. The Cutting depth of the knife can be adjusted manually by hand and is during the cutting process can not be changed. It will be a uniformly thick Turf sod cut.

in the Further, a method is known where in Erdbearbeitungsmaschinen with the help of a straightening laser, the height of the plow blade is controlled, around an aligned area to obtain. These earthworking machines can only be used on large areas become.

The Invention is that a turf cutting machine with a scheme that allows it, with the help of a Laser beam the necessary depth of cut for an aligned surface running to capture and the depth of cut during the cutting process adapt to cheaper Make an aligned area already obtained when cutting the turf.

By in the further claims measures taken, are advantageous developments and improvements to claim 1 indicated arrangement possible.

In Another advantageous embodiment of the invention is the under the lawn turf lying bottom cut to a greater working depth to obtain.

In Another advantageous embodiment of the invention is the cut Turf automatically removed from the ground.

In further advantageous embodiment of the invention is used instead a cutting knife a saw blade used, which also firmer material can be cut.

The Arrangement according to the invention is very cheap for the Processing of small lawns, which require a defined level.

Description of the embodiment

The Invention is based on an embodiment shown in the drawing, explained in more detail in the following description. The illustration shows schematically the arrangement according to the invention the method and apparatus for cutting the turf according to the invention.

With a laser 10 , with his laser beam 11 completely covers the surface to be machined, the altitude of the surface to be machined with an offset, the size of the distance laser receiver 12 , to the cutting plane 15 has, given. The laser beam 11 is from a laser receiver 12 which is attached to the machine received to the current altitude of the cutting knife 16 evaluate. If the current altitude of the cutting blade deviates from the specification, the actuator is used 13 the working depth 14 of the Machine changed so that the cutting knife 16 again on the given cutting plane 15 cuts.

The cut turf can now be removed. When the working depth 14 the cutting machine is not large enough to reach the required depth of cut, a second cutting operation can also be performed. In doing so, the position and orientation of the laser 10 not changed.

Claims (6)

Method of cutting lawn sods using a laser beam 11 for height adjustment of the cutting knife 16 the cutting plane 15 adhered to the surface to be cut according to specification. Device for machine cutting the turf from the ground using a laser beam 11 for height adjustment of the cutting blade 16 for carrying out the method according to claim 1. The device is characterized in that a cutting knife 16 by at least one actuator 13 in the working depth 14 is regulated so that the cutting plane 15 parallel to the laser beam 11 runs. There must be at least one laser receiver 12 to be available. This can be designed directional. The setting of the working depth 14 done by at least one actuator 13 which receives its control commands from at least one laser receiver 12 receives. The laser receiver 12 determined from the current altitude of the cutting blade (cutting machine) and the difference to the laser beam 11 the required working depth change 14 , Arrangement according to claim 2, characterized in that on the left and on the right side of the machine, a laser receiver 12 is appropriate. Both laser receivers 12 work independently. Arrangement according to claim 2 and 3, characterized in that the receiving direction of the laser receiver 12 up to 360 °. Arrangement according to claim 2 and 3, characterized in that a left and a right actuator 13 separate the height setting of the cutting knife 16 can make. Due to the movable mounting of the cutting knife 16 in the actuators 13 , these can make different height settings. Arrangement according to claim 2 and 5, characterized in that the height adjustment of the cutting knife 16 is performed continuously during the cutting process.