Measuring and cross cutting system for round timber

The invention relates to a cutting device Rundholzmeß- and according to the preamble of claim 1 for use in sawmills; see US-A 4,468,993.

To disassemble, the length logs according to their dimensions, and considering the present orders for the timber optimally, are computerized measuring and Ablängeinrichtungen for roundwood in use, which operate according to the following principle:

With a track-bound mobile crane long logs are removed from the log yard, placed on the Ablängpolter and fixed immovably by mechanical or hydraulic jaws. To capture the dimensions of Langholz tribe and for cutting a measuring device and a cross-cut saw are mounted on the crane truck. To measure the crane carriage moves to a root end, leads to the crosscut saw a flush-cut to precisely define the zero point of the length measurement and moves the entire tribe, although in certain grid spacings diameter measurements are taken. The measurement results are entered into a computer and compared with the stored timber dimensions of the orders. Thereafter, the computer gives a suggestion for optimal cutting of the log. According to this proposal moves the crane truck to now the predetermined positions, taking the cuts before the chop saw.

These known measurement and Ablängeinrichtungen have inter alia the disadvantage that the 25-ton crane truck not only for supplying and carrying away the wood but also for measuring and cutting to length several times the entire stem length must travel, which is not only to a significant additional energy consumption and material wear results, but at the ponderous movement of the crowd intense crane truck also takes a relatively long time to complete.

The invention has the object to develop a Rundholzmeß- and cutting device, which avoids the aforementioned disadvantages, speeds up the measurement process and a substantially higher material throughput.

The object is achieved by the features specified in the claim. 1 Advantageous embodiments of the invention are subject matter of claims 2 to 10th

A particular advantage of the invention is that the measuring and Ablängwagen separately for timber transport vehicle (crane truck) is provided and this has over a significantly reduced mass and therefore can be moved much more quickly, thereby measuring and Ablängzeiten shortened tremendously and the material throughput whole is increased considerably. In addition, the timber transport vehicle is no longer bound to the measurement and Ablängvorgang and at this time free for the actual task, namely the transport of timber, is. This also contributes to increase the material throughput. Finally, so the saving of "empty runs" of heavy Holztransport- and -sortierwagens during measuring and cutting to length and to a considerable energy saving.

The invention will be explained in more detail with reference to embodiments in conjunction with Figures 1 to. 6 Therein:<dl id="dl0001"><dt>Fig. 1</dt><dd>a plan view of a Rundholzmeß- and length-cutting device according to the invention,</dd><dt>FIG. 2</dt><dd>a measuring and Ablängwagen in side view;</dd><dt>Fig. 3</dt><dd>this car in top view;</dd><dt>Fig. 4</dt><dd>a perspective view of another embodiment in a purely schematic diagram for explaining the arrangement of the clamping device,</dd><dt>Fig. 5</dt><dd>an end view of the carriage according to FIG. 4, and</dd><dt>Fig. 6</dt><dd>is an end view of another embodiment of the car.</dd></dl>

Long logs 1 are deposited by the crane of traveling on the tracks 2 and Holztransport- -sortierwagens on the firmly attached to the foundation 8 Ablängpolter. 3

A special position check ensures that the strain is deposited so that it can be easily run over by measuring and Ablängwagen. 4 If the stem outside the permitted range, a warning signal is ausglöst and automatically stop the car.

To capture the root dimensions of stem launched from measuring and Ablängwagen 4 will run over its entire length, which is remotely controlled from the control cabin of the timber transport vehicle. On frame 9 of the measuring and Ablängwagens 4 a Meßvorhang 13 is provided which has a light, for example, 1 mx 1 m, so that strains can be measured up to 1 m in diameter and larger. The length measurement is performed by measuring the distance traveled and the car starts to any strain end. The zero line is formed by establishing a smooth cut at a certain distance from the stem end. The trunk diameter are evaluated in appropriate grids, stored in a computer installed in the dugout and 6 on a screen (terminal) in the control cabin of Holztransport- and -sortierwagens shown.

After shutting down the entire tribe of the computer is by comparing it with the stored therein present orders from optimal Ausformvorschläge represented in the control cabin of the timber transport vehicle on the screen. The seated in the timber transport vehicle operator acknowledged by pressing a key, the execution of specified by computer classification proposals. The computer, which, as mentioned, administers the job list, then stores earmarked for cutting to length sections.

After performing the measurement process of measuring and Ablängwagen 4 stops automatically at the root end. The cutting of the trunk with the chop saw 12 is carried out in reverse order to the measuring direction, ie, the cutting will start immediately from the root end reached when measuring from. The chop saw 12 is like the Meßvorhang 13 fixedly connected to the frame of the testing and Ablängwagens and is controlled automatically or by manual control from the control position. The section length is again determined by measuring the distance traveled, the measuring and Ablängwagens and so down the crosscut saw in the corresponding target positions.

Before executing the Kappschnittes the strain by jump of the jaws 11 is fixed.

For sloping wooden parts or dirt a moving floor or scraper conveyor can be installed between the tracks of the measuring and Ablängwagens. 4 The resulting when caps sawdust can be sucked through a corresponding suction directly on the sword. Another advantage is an additional lifting device on the clamping jaws, which the trunk slightly raising the caps to prevent jamming of the chain saw and a cutting into the support timbers or other parts.

In dargestellen embodiment, this lifting device is shown in FIG. 5 is formed of a arranged on a crossbeam thrust piston gear 14, which engages a part connected to the joint 15 of a pair of clamping jaws lift arm 16th This results in a compact design of the lifting device, which has to raise only the jaws. Here, a thrust piston transmission 14 is provided for each pair of clamping jaws. The clamping device comprises according to FIG. 4, two pairs of jaws 17 and 18, between which the cutting saw 12 is arranged. The two jaws of each jaw pair 17, 18 are connected at their upper end via a joint 15 with each other, below the joint, the ends attack by likewise designed as a piston-cylinder units thrust piston gear 19, 20, driving the jaws in the clamping position. FIGS. 4 and 5 also clearly show the portal construction of two lower, the wheels receiving the longitudinal beams 21 and 22, front and rear uprights 23 to 26 and upper longitudinal beams 27, 28 which are connected to each other by upper cross beams. This results in a closed and very rigid construction, with the portal, the actual working device was added. The portal 9 is in this case expediently formed as a square tube construction, the stator and crossbar at least at the leading and trailing ends of the portal side walls 29 are provided in the area, which have a shape of an inverted U having recess 30 for the master implementation. The portal 9 carries the Meßvorhang, the crosscut saw and the clamping device and has a drive, the chassis is formed by one, two or four wheels on the bar. Preferably two or four gearmotors at the wheels are provided for modulating a frequency converter. Before and after each wheel a scraper can be arranged, the impurities located on the track. Each left and right of the blade can alternatively to the jaw pairs in the square tube with plastic insert guided stem clamp arms be provided which cylinders are individually operable. The cylinders may be coupled via flow divider, which compensates for irregularities. The Meßvorhang is housed on site and has in one embodiment, two vertical opposite light strips for determining the vertical trunk diameter. In another alternative, additional stacked horizontally or diagonally oriented light bars can be provided, so that the strain is then passed through four light strip, whereby the horizontal diameter of the trunk can be measured.

The optimization system with the computer can be disposed on the measuring and Ablängwagen, wherein the data is transmitted by radio to the operation system, which is preferably disposed on the Holztransport- and -sortierwagen. Instead of a radio transmission, a data light barrier is possible, in which case, however, the light signal transmitter must be aligned on the carriage straight to the receiver of the data is then transferred to the Holztransportwagen via radio. Alternatively, the optimization system may be arranged with the computer outside of the car, where a trailing cable or a radio link or optical data between the Meßvorhang and the optimization system is then available. Preferably a separate measuring wheel is provided on the measurement is carried out with a rotary encoder. Alternatively, the encoder can also act on one of the non-driven wheels of the car. Here, if one can speak of wheels, it is clear that there may be here to seemed independent wheels, or also to the wheels, which interact with rails.

The strain can be stationary lying on the formed from a steel profile construction timber support according to Figure 4 and 5, on the travels of the measuring and Ablängwagen. Preferred is a drive 31 for the removal of the separated stem portions.