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WO2002066360A1 - Chargeuse - Google Patents

Chargeuse Download PDF

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Publication number
WO2002066360A1
WO2002066360A1 PCT/FI2002/000142 FI0200142W WO02066360A1 WO 2002066360 A1 WO2002066360 A1 WO 2002066360A1 FI 0200142 W FI0200142 W FI 0200142W WO 02066360 A1 WO02066360 A1 WO 02066360A1
Authority
WO
WIPO (PCT)
Prior art keywords
loader
arm
lifting cylinder
plate
connecting plate
Prior art date
Application number
PCT/FI2002/000142
Other languages
English (en)
Other versions
WO2002066360A8 (fr
Inventor
Risto Heikkilä
Original Assignee
Heikkilae Risto
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heikkilae Risto filed Critical Heikkilae Risto
Publication of WO2002066360A1 publication Critical patent/WO2002066360A1/fr
Publication of WO2002066360A8 publication Critical patent/WO2002066360A8/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable

Definitions

  • the present invention relates to a loader in accordance with the preamble of claim 1.
  • This loader is primarily employed as a loader in logging machines.
  • Various timber handling apparatuses such as a cutting head, i.e. a harvester part, or a feller head, an energy wood grapple or a timber handling grapple, are generally mounted on one end of the loader. Thanks to its reach and movement path, this loader enables treating and felling of trees, either in a selective manner, in which case a forest is thinned, or as a final felling, in which case a forest is harvested on a clearfell basis.
  • the loaders are mounted on a base provided by a logging machine by means of a so-called turntable platform.
  • the lifting cylinder is arranged in a position intersecting with the primary arm, either beside it or penetrating the arm.
  • the structure either weakens the structure of the primary arm or requires the turntable platform to have a larger slewing ring than conventionally for connecting the loader thereto.
  • the solution is not satisfactory either, because it makes it difficult to guide the necessary pressure media pipes, or the like, from the base machine to the loader.
  • the object of the present invention is to provide a solution, by which the drawbacks of the prior art could be mainly avoided, and a novel, durable, simple and reliable loader would be achieved.
  • the loader of the invention comprises actuators, i.e. a lifting cylinder and a transferring cylinder, that control the arms and are arranged superim- posed in connection with the primary arm of the arms, advantageously in the same shear plane. At the same time, this actuator placement allows them to be designed as advantageous in size as possible.
  • the placement of the lifting cylinder in accordance with the invention further makes the loader structure low and narrow, and the mass centre of the working machine is located very low.
  • the advantageous location of the mass centre in turn, enables use of a less costly slewing ring having more advantageous structure for securing the loader to the base machine. Because of the low structure, the visual field of the machine operator is also more open than in the prior art apparatuses.
  • both of the actuators are also located close to the base machine, where they are protected as the logging machine moves in the terrain. As the actuators are behind the primary arm during use, in view of the load to be handled therewith, the actuators are also well pro- tected against the secondary arm or impacts from devices and their loads arranged therein.
  • the movement path of the loader according to the invention is ideal, because the horizontal transfer movement throughout its range is performed using only one cylinder, i.e. the transferring cylinder, whereby the loader moves very smoothly.
  • the angles of the primary arm and the secondary arm with respect to the vertical plane remain substantially the same throughout the range of the arms, and consequently the mass centre of the loader is always optimally as close to the attachment point and the base machine as possible.
  • Figure 1 is a schematic side view of a first preferred embodiment of a loader according to the invention
  • Figure 2 shows a detail of the loader in Figure 1 , protrusion of a lifting cylinder piston being at its lowest;
  • Figure 3 shows a detail of the loader in Figure 1 , protrusion of a lifting cylinder piston being at its highest;
  • Figure 4 is a schematic side view of a second preferred embodiment of the loader according to the invention.
  • Figure 5 is a schematic side view of a third preferred embodiment of the loader according to the invention.
  • the loader of Figures 1 to 3 thus comprises a tilting turntable 2 arranged in a logging machine frame, i.e. a base machine 1 , by means of a turntable platform known per se, for instance.
  • Loader arms comprising a primary arm 3 and a secondary arm 4, interlinked in an articulated manner, are arranged in the turntable, the primary arm being rotatably attached to the turntable at the base end.
  • the distance between the attachment point of the pri- mary arm of the loader and the base machine 1 is small, whereby the total structure of the loader is low and the mass centre of the device is close to the base machine.
  • a lifting cylinder 5 and a transferring cylinder 6 are arranged to control the movements of the arms in the loader.
  • the transferring cylinder is substantially parallel to the primary arm and arranged at a first end, i.e. cylinder end, substantially to the base end of the primary arm 3 on the side of the turntable 2.
  • the transferring cylinder is then rotatably attached to the primary arm, by means of a mounting piece 7.
  • This mounting piece 7 is arranged to link the primary arm with the turntable through a mounting plate 8.
  • both the transferring cylinder and the primary arm can be attached, each separately, with common or separate mounting plates to the turntable.
  • the lifting cylinder is also advantageously attached at its first end, i.e. cylinder end, to the same mounting plates in the turntable, but the turntable may also have specific securing means for the lifting cylinder.
  • the lifting cylinder is arranged at an angle with the primary arm, the angle being 45 ° to 135 °, preferably about 90 °.
  • the lifting cylinder thus projects outwardly in a direction above the securing point of the primary arm in the normal use of the loader.
  • the control movements produced by the actuators are arranged such that they are transmitted to the arms through a connecting plate 9 in the loader. This connecting plate is arranged to receive control movements produced by a piston of the transferring cylinder 6, opposite the turntable.
  • the same connecting plate is arranged to receive the control movements produced by the lifting cylinder 5 and the piston thereof, the lifting cylinder being almost at a right angle to the transferring cylinder.
  • the movements of the lifting cylinder piston are thus transmitted to the connecting plate through a stabilizer bar 10 that communicates with the connecting plate.
  • the substantially rigid stabilizer bar is arranged at a first end to the connecting plate and at a second end to an elongated lower link plate 11 controlled by the lifting cylinder.
  • the other end of the lifting cylinder, opposing the turntable, i.e. the piston end is rotatably attached to the lower link plate, which in turn is arranged to the turntable through mounting plates 8, for instance.
  • the stabilizer bar 10 movement and the structure of devices and means controlling the arms will be particularly advantageous if the lower link plate 11 and the primary arm 3 are arranged to have a common link point.
  • This structure provides the loader with a rigid supporting triangle consisting of the stabilizer bar, the lower link plate and the transferring cylinder, whereby troubles in the stabilizer bar or the primary arm movement can be avoided.
  • the transfer movement of the piston in the lifting cylinder can be utilized particularly efficiently, when a torque arm is arranged between the connecting points of the lifting cylinder and the stabilizer bar 10 in the lower link plate in accordance with the figures.
  • the loader is then controllable with an advantageous small-sized cylinder.
  • the link point between the lifting cylinder 5 and the lower link plate is in this embodiment further away from the connecting point between the mounting plate 8 and the lower link plate than the link point between the stabilizer bar and the lower link plate.
  • the longitudinal axis of the lifting cylinder are arranged to intersect.
  • an angle ⁇ which is wider than 0°, advantageously 0° to 20°, is provided between the lines.
  • ⁇ which is wider than 0°, advantageously 0° to 20°.
  • the lower link plate is curved or polygonal in shape.
  • the movement path of the loader is controlled with wide-angle links 12 in the connecting area of the primary and secondary arms as shown in Figure 1. These wide-angle links are controlled with an auxiliary arm 13 extending from the connecting plate 9. As the wide-angle links assist in producing the control movement, an auxiliary yoke 14 that is rotatably arranged in the primary arm 3 and in the connecting plate is also arranged to control the movements of the connecting plate.
  • the loader is arranged to be controllable by means of a transferring cylinder 6 and a stabilizer bar 10 extended to the connecting area of the primary and the secondary arms.
  • the stabilizer bar and the transferring cylinder are arranged to the connecting plate 9, which is rotatably attached to the base portion projecting from the secondary arm 4. Additionally, in this loader embodiment, there is an auxiliary yoke 14 arranged to control the movements of the connecting plate, linking the connecting plate with the primary arm and arranged to be rotatable with respect thereto.
  • FIG. 5 A third embodiment of the loader is shown in Figure 5.
  • the connecting plate 9 is here attached rigidly to the base of the secondary arm 4, the connecting plate thus receiving and transmitting the control movements of the transferring cylinder 6 and the stabilizer bar 10, directly attached to said connecting plate, to the secondary arm.
  • the lifting cylinder 5 and the transferring cylinder 6 can be arranged to be substantially on the same shear plane with the primary arm 3, which permits the apparatus to have an advantageous, narrow structure.
  • the lift and transferring cylinders being located close to the base machine 1 in accordance with the figures, they are at the same time well protected when the loader moves.
  • the actuating means are posi- tioned on the opposite side of the secondary arm 4, articulated to the primary arm, they are protected against possible impacts from the secondary arm or an actuator 15 connected thereto.
  • the arms can be straightened or retracted with one control movement.
  • the transferring cylinder 6 is then arranged to control a polygon produced in the loader such that when a transfer force, in the direction of the longitudinal axis of the transferring cylinder, is directed to the polygon with the transferring cylinder, the angles of the polygon are changed, which results in substantially simultaneous and equal, i.e. synchronized, movements of the primary arm 3 and the secondary arm 4. This produces a substantially linear movement path for the outer end of the secondary arm in the working space.
  • the primary arm is provided with a rotating movement towards the base machine.
  • This rotating movement is transmitted to the secondary arm, forcing it to rotate an angle ⁇ , which equals the rotation angle ⁇ of the primary arm.
  • the primary arm and the secondary arm thus rotate in proportion, the loader thus extending outwardly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shovels (AREA)
  • Feeding Of Workpieces (AREA)

Abstract

La présente invention concerne une chargeuse qui est principalement destinée à être utilisée dans des engins forestiers. La chargeuse comprend un plateau tournant (2) prévu pour relier la chargeuse à un engin de base (1) et des bras constitués d'un bras primaire (3) et d'un bras de transfert (4) qui sont reliés entre eux de manière articulée. Un cylindre de levage (5) et un cylindre (6) assurant le transfert, attachés au moyen d'une plaque (9) de connexion aux bras, sont disposés pour commander les bras. Le cylindre assurant le transfert est ainsi attaché directement à la plaque de connexion en liaison avec le bras primaire et le mouvement de commande du cylindre de levage est à son tour transmis à ce dernier par l'intermédiaire d'une barre stabilisatrice (10) et d'une plaque de liaison inférieure (11). Le cylindre de levage et le cylindre assurant le transfert commandant les bras sont ainsi disposés l'un au-dessus de l'autre, sur le même plan de cisaillement, de sorte que la chargeuse présente une structure étroite et basse.
PCT/FI2002/000142 2001-02-22 2002-02-21 Chargeuse WO2002066360A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20010346A FI20010346A0 (fi) 2001-02-22 2001-02-22 Kuormain
FI20010346 2001-02-22

Publications (2)

Publication Number Publication Date
WO2002066360A1 true WO2002066360A1 (fr) 2002-08-29
WO2002066360A8 WO2002066360A8 (fr) 2003-12-04

Family

ID=8560468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2002/000142 WO2002066360A1 (fr) 2001-02-22 2002-02-21 Chargeuse

Country Status (2)

Country Link
FI (1) FI20010346A0 (fr)
WO (1) WO2002066360A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1930401A1 (sv) * 2019-12-12 2021-06-13 Virdenaes Hans Gunnar Ledad lyftarm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE383991B (sv) * 1974-09-13 1976-04-12 Motrac Gunnarson & Larsson Hb Redskapsarm
US5197615A (en) * 1989-05-16 1993-03-30 Mo-Trac Gunnarson & Larsson Handelsbolag Crane
GB2299979A (en) * 1995-04-21 1996-10-23 Emlyn Thomas Evans Mechanical handling apparatus
WO1997001269A1 (fr) * 1995-06-28 1997-01-16 Alfred Fyffe Robertson Engins de chantier auto-propulses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE383991B (sv) * 1974-09-13 1976-04-12 Motrac Gunnarson & Larsson Hb Redskapsarm
US5197615A (en) * 1989-05-16 1993-03-30 Mo-Trac Gunnarson & Larsson Handelsbolag Crane
GB2299979A (en) * 1995-04-21 1996-10-23 Emlyn Thomas Evans Mechanical handling apparatus
WO1997001269A1 (fr) * 1995-06-28 1997-01-16 Alfred Fyffe Robertson Engins de chantier auto-propulses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE1930401A1 (sv) * 2019-12-12 2021-06-13 Virdenaes Hans Gunnar Ledad lyftarm
WO2021118446A1 (fr) * 2019-12-12 2021-06-17 VIRDENÄS, Hans-Gunnar Grue articulée
SE543971C2 (sv) * 2019-12-12 2021-10-12 Virdenaes Hans Gunnar Ledad lyftarm

Also Published As

Publication number Publication date
WO2002066360A8 (fr) 2003-12-04
FI20010346A0 (fi) 2001-02-22

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