Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
  • B66C3/14—Grabs opened or closed by driving motors thereon
  • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
  • A01G23/00—Forestry
  • A01G23/003—Collecting felled trees
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
  • A01G23/00—Forestry
  • A01G23/02—Transplanting, uprooting, felling or delimbing trees
  • A01G23/06—Uprooting or pulling up trees; Extracting or eliminating stumps

Definitions

• the invention relates to an apparatus for cleaning especially wooden material, such as stumps and felling waste, for example, from soil substances, which apparatus is defined in the preamble of Claim 1.
• the wood material such as stumps, is purified from the soil substances by means of an appropriate apparatus, such as a stump rake in which the up-and-down motion of the teeth vibrates the stump pieces on the teeth.
• an eccentric vibrator moving on rubber springs can be used to clean the material in the grapple of the working machine.
• a drawback related with working with the current apparatuses is the slowness of work caused by the back-and- forth lifting and vibrating of the wood material, such as a stump piece, on the rake by the grapple cylinder.
• a cleaning apparatus provided with an eccentric vibrator is heavy, and the vibrating of the entire grapple exerts stress on the crane boom.
• a drawback related the above apparatuses is that the mass of the whole rake and grapple has to be used to vibrate the material to be processed. This, in turn, in- creases the stresses in the boom and elsewhere in the structure.
• the object of the invention is to provide an apparatus by means of which a conclusive improvement in the above-mentioned drawbacks is attained.
• the apparatus according to invention is characterized by what is defined in the characterizing part of claim 1.
• the structure is simple and inexpensive to manufacture.
• the weight of the apparatus is augmented only a little but the increase in the working speed is considerable.
• the apparatus according to this invention makes it possible to efficiently clean stump pieces, which have been cut into smaller pieces and picked up from the ground, as well as to shake off the needles especially in the case of felling waste. It is preferable that the needles stay on the ground as a nutrient and because they are disadvantageous to the combustion of felling waste in power plants.
• this apparatus makes it possible to carry out the purification in several different steps, if needed, when loading from the ground and unloading.
• the simultaneous purification and loading saves a sig- nificant amount of time.
• Figure 1 is a side view of an apparatus according to the invention and the purification function.
• Figure 2 is a side view of an apparatus according to invention in an opened state.
• Figure 3 is a side view of a grapple according to the invention provided with a conventional suspension.
• a grapple rotator having a grapple frame 1 fixed thereto is connected to a crane arm 8.
• Arms 3 a and arms 4, which both are provided with a plurality of teeth, are connected to the grapple frame 1 through joints 2 on one side and on the other side of the frame, respectively.
• the arms 3a and 4 move like a conventional grapple.
• An arm 3b is pivoted to the arm 3a by a joint 5, being used relative to the arm 3a by a power unit 7, which in this case is a hydraulic cylinder.
• the arms 3a, 3b on one side of the grapple are pivoted to each other.
• the lower arms 3 b can hit the material in the grapple in order to clean it.
• an apparatus according to the invention is combined with an apparatus according to patent Fl 102674.
• the apparatus has an auxiliary arm connected to the crane arm 8 via a joint, it being rotatable against a counter plate below the grapple rotator 9, as shown in Figure 2.
• This grapple is filled by pulling, which parallelizes the material moving into the grapple.
• the embodiment according to Figure 3 is a grapple attached to a crane arm by a conventional suspension, having material taken into it by a conventional inward- turning motion of the arms.
• wood material such as stumps and felling waste
• wood material is picked up from the ground or from another place into the grapple as well as pressed against the bottom plate of the frame by means of the arms of the grapple.
• the wood material is purified by moving the arms 3b on one side of the grapple, first outwards and then strongly inwards by means of the power unit 7, whereby these arms 3b hit the material to be purified in the grapple, and the loose material to be removed, such as rock material, can fall out.
• the grapple operates and is used in the same way as a conventional grapple when no inclination is used and the arm 3b is turned into the outermost basic position as viewed from the center line.
• some of the second grapple arms are truncated but one or more of them are not, it thus being possible for it or them to hold the material to be purified.
• all the second grapple arms are truncated, the material to be purified being held by the grapple arms located on the opposite side.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Biodiversity & Conservation Biology (AREA)
• Ecology (AREA)
• Forests & Forestry (AREA)
• Environmental Sciences (AREA)
• Shovels (AREA)
• Load-Engaging Elements For Cranes (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36950649

Family Applications (1)

Country Status (3)

Cited By (4)

Citations (5)

• 2006
  • 2006-08-23 FI FI20060748A patent/FI119288B/fi not_active IP Right Cessation
• 2007
  • 2007-08-22 SE SE0900305A patent/SE0900305L/sv not_active Application Discontinuation
  • 2007-08-22 WO PCT/FI2007/000207 patent/WO2008023088A1/en not_active Ceased

Patent Citations (5)

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