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WO2004026667A1 - A bunk for a load carrying vehicle - Google Patents

A bunk for a load carrying vehicle Download PDF

Info

Publication number
WO2004026667A1
WO2004026667A1 PCT/SE2003/001466 SE0301466W WO2004026667A1 WO 2004026667 A1 WO2004026667 A1 WO 2004026667A1 SE 0301466 W SE0301466 W SE 0301466W WO 2004026667 A1 WO2004026667 A1 WO 2004026667A1
Authority
WO
WIPO (PCT)
Prior art keywords
stake
inner member
bunk
links
pivotal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SE2003/001466
Other languages
French (fr)
Inventor
Anders ÅSTRÖM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Forest AB
Original Assignee
Partek Forest AB
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 Partek Forest AB filed Critical Partek Forest AB
Priority to AU2003263711A priority Critical patent/AU2003263711A1/en
Priority to DE10393286T priority patent/DE10393286T5/en
Priority to CA2505766A priority patent/CA2505766C/en
Publication of WO2004026667A1 publication Critical patent/WO2004026667A1/en
Priority to FI20050292A priority patent/FI124306B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/08—Securing to the vehicle floor or sides
    • B60P7/12—Securing to the vehicle floor or sides the load being tree-trunks, beams, drums, tubes, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/02—Platforms; Open load compartments
    • B62D33/0207—Connections of movable or detachable racks or stanchions to platforms
    • B62D33/0215—Connections of movable or detachable racks or stanchions to platforms for log hauling vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/40—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying long loads, e.g. with separate wheeled load supporting elements
    • B60P3/41—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying long loads, e.g. with separate wheeled load supporting elements for log transport
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/08—Superstructures for load-carrying vehicles comprising adjustable means

Definitions

  • This invention relates to a bunk for a load carrying vehicle, in particular a forwarder or the like, comprising an arm fastened on the vehicle and a stake supported by the outer end of the arm.
  • the maximum width of a forwarder is the width between its stakes and this full width limits the traversability also when the forwarder has no load.
  • the traversability should be improved if the width could be reduced when full width is not nececcary.
  • Figure 1 is a side elevational view of a forwarder.
  • Figure 2 shows the load carrying portion of a forwarder, but not the same load carrying portion as shown in figure 1.
  • Figure 3 is a perspective view of a bunk shown in figure 2.
  • Figure 4 shows the bunk of figure 3 with the stake of the bunk in another position.
  • Figure 5 is a longitudinal section through the bunk of figures 3 and 4 and it shows the two alternative positions of the stake.
  • Figure 6 is a tranverse section taken along line 6-6 in figure 5.
  • FIG 1 a conventional forwarder with articulated steering is shown, which has a load- carrying portion with three bunks with stakes 11,12,13 and a loading crane 14.
  • the front end of the load-carrying portion has a front 15 as a protection for the cabin.
  • Figure 2 shows a load-carrying portion of a forwarder.
  • This load-carrying portion is not the same as the one on the forwarder in figure 1 and it has bunks 16,17 and 18,19 with four identical stakes 20-23 which all are shown in two alternative positions.
  • the bunks are fastened on a central beam 24 and each bunk consists of a pair 16,17 and 18,19, respectively, of arms.
  • the arm 17 of bunk 16,17 is shown having its stake in one of its two alternative positions.
  • the stake consists of an inner member 26,27 and an outer member 28.
  • the inner member consists of two links or arms 26,27 that are mounted to be pivotal about axes I and II respectively.
  • the outer member 28 of the stake is pivotably supported by the two links 26,27 for pivoting about two axes axes III and IV relative to the links 26,27.
  • the four axes form a parallelogram so that the outer member will always be moved in parallel when the inner member 26,27 of the stake pivots about the axes I and II.
  • the four axes are parallel with the longitudinal axis of the vehicle.
  • the inner member 26,27 of the stake is shown pivoted into its outward-directed, substantially horizontal, end position in which the link 26 takes support on stops 30 on the arm 25.
  • the stake can be locked by pins 32 that are moved into holes 31 in the link 26 and corresponding holes 33 in the arm 25.
  • the upward-directed position of inner member 26,27 is defined by the link 26 taking support on the pivot 34 that forms the axis II, which facilitates the mounting of the pins 32.
  • the outer member 28 of the stake is shown as a tube, and extensions can be mounted in this tube as shown in figure 1.
  • the arm 17 is shown in a longitudinal section with the stake 26,27,28 in its both positions.
  • Figure 6 shows the links 26,27 in a transverse section and they form between them a space for a gas spring 35 that is mounted between a bracket 26 fixed to the link 26 and a link 37 that is pivotably mounted to the link 37.
  • the pivotable link 37 will snap over from one end position to the other when the inner member 26,27 of the stake is moved from one position towards the other and the gas spring 35 will thereby force the inner member of the stake to either one of its end positions when the inner member is moved by an outer force from either one of its end positions so that the inner member will be bistable in its end positions.
  • the crane 14 can be used to provide this outer force since no fine adjustment is necessary because of the bistability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Handcart (AREA)
  • Jib Cranes (AREA)
  • Lock And Its Accessories (AREA)
  • Vehicle Body Suspensions (AREA)
  • Loading Or Unloading Of Vehicles (AREA)

Abstract

Each of the bunks of a forwarder comprises a pair of arms 16, 17 and 18, 19. Each arm has a stake with an inner member that comprises two links (26, 27) supported by the bunk to be pivotal about two parallel axes (III, IV) and an outer member (28) that is pivotably mounted on the two links so that it is pivotal thereto about two axes (III, IV). The inner member will thereby move the outer member in parallel in a vertical position when the inner member is pivoted between its vertical end position and its horizontal end position. In this way, one can choose between a narrow loading area and a wider loading area.

Description

A bunk for a load-carrying vehicle Technichal field of the invention
This invention relates to a bunk for a load carrying vehicle, in particular a forwarder or the like, comprising an arm fastened on the vehicle and a stake supported by the outer end of the arm.
Technichal background
The maximum width of a forwarder is the width between its stakes and this full width limits the traversability also when the forwarder has no load. When the timber is light, one might need a large loading area and thus a large width in order to have a full load, but when the timber is heavy, it is not necessary to have the full width. The traversability should be improved if the width could be reduced when full width is not nececcary.
Object of invention
It is an object of the invention to permit for an adjustment of the load carrying area and width of a forwarder or the like vehicle.
Brief description of the drawings
• Figure 1 is a side elevational view of a forwarder.
• Figure 2 shows the load carrying portion of a forwarder, but not the same load carrying portion as shown in figure 1.
• Figure 3 is a perspective view of a bunk shown in figure 2.
• Figure 4 shows the bunk of figure 3 with the stake of the bunk in another position.
• Figure 5 is a longitudinal section through the bunk of figures 3 and 4 and it shows the two alternative positions of the stake.
• Figure 6 is a tranverse section taken along line 6-6 in figure 5.
Description in more detail of the illustrated and preferred embodiment of the invention In Figure 1, a conventional forwarder with articulated steering is shown, which has a load- carrying portion with three bunks with stakes 11,12,13 and a loading crane 14. The front end of the load-carrying portion has a front 15 as a protection for the cabin. Figure 2 shows a load-carrying portion of a forwarder. This load-carrying portion is not the same as the one on the forwarder in figure 1 and it has bunks 16,17 and 18,19 with four identical stakes 20-23 which all are shown in two alternative positions. The bunks are fastened on a central beam 24 and each bunk consists of a pair 16,17 and 18,19, respectively, of arms.
In Figure 3, the arm 17 of bunk 16,17 is shown having its stake in one of its two alternative positions. The stake consists of an inner member 26,27 and an outer member 28. The inner member consists of two links or arms 26,27 that are mounted to be pivotal about axes I and II respectively. The outer member 28 of the stake is pivotably supported by the two links 26,27 for pivoting about two axes axes III and IV relative to the links 26,27. The four axes form a parallelogram so that the outer member will always be moved in parallel when the inner member 26,27 of the stake pivots about the axes I and II. The four axes are parallel with the longitudinal axis of the vehicle. In figure 4, the inner member 26,27 of the stake is shown pivoted into its outward-directed, substantially horizontal, end position in which the link 26 takes support on stops 30 on the arm 25. In the upward-directed, substantially vertical, position of the inner member 26,27 in figure 3, the stake can be locked by pins 32 that are moved into holes 31 in the link 26 and corresponding holes 33 in the arm 25. The upward-directed position of inner member 26,27 is defined by the link 26 taking support on the pivot 34 that forms the axis II, which facilitates the mounting of the pins 32.
In figures 2-5, the outer member 28 of the stake is shown as a tube, and extensions can be mounted in this tube as shown in figure 1.
In Figure 5, the arm 17 is shown in a longitudinal section with the stake 26,27,28 in its both positions. Figure 6 shows the links 26,27 in a transverse section and they form between them a space for a gas spring 35 that is mounted between a bracket 26 fixed to the link 26 and a link 37 that is pivotably mounted to the link 37. The pivotable link 37 will snap over from one end position to the other when the inner member 26,27 of the stake is moved from one position towards the other and the gas spring 35 will thereby force the inner member of the stake to either one of its end positions when the inner member is moved by an outer force from either one of its end positions so that the inner member will be bistable in its end positions. The crane 14 can be used to provide this outer force since no fine adjustment is necessary because of the bistability.

Claims

Claims
1. A bunk for a load carrying vehicle, in particular a forwarder or the like, comprising an arm (25) fastened on the vehicle and a stake (26,27,28) supported by the outer end of the arm, characterised in that the stake has an inner member (26,27), which is pivotably supported by the arm (25) to be pivotal about a first axis (I) parallel with the longitudinal direction of the vehicle between an outward-directed position and a upward-directed position, and an outer member (28), which is pivotal about a second axis (III) parallel with the first axis, means (26,27) being arranged for maintaining the outer member (28) of the stake in upward-directed position independently of whether the inner member (26,27) is in its outward-directed position or in its upward-directed position.
2. A bunk according to claim 1, characterised in that the inner member of the stake comprises two links (26,27) pivotably supported for being pivotal about parallel axes (I, II) and the outer member (26,27) of the stake is pivotably supported by both links for being pivotal about parallel axes (III, IV), the two links forming said means for maintaining the outer member of the stake in upward-directed position.
3. A bunk according to claim 2, characterised by a device (35,37) for maintaining the inner member (26,27) of the stake bistable in its two positions.
4. A bunk according to claim 3, characterised in that the device (35,37) for maintaining the inner member (26,27) of the stake bistable in its two positions comprises a spring device (35,37) arranged, when the inner member (26,27) is in an intermediate position, to snap over from biasing the inner member of the stake towards one of its end positions to biasing it towards the other end position.
5. A bunk according to any one of claims 2-4, characterised in that the spring device (35,37) is coupled between the two links (26,27).
PCT/SE2003/001466 2002-09-18 2003-09-18 A bunk for a load carrying vehicle Ceased WO2004026667A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2003263711A AU2003263711A1 (en) 2002-09-18 2003-09-18 A bunk for a load carrying vehicle
DE10393286T DE10393286T5 (en) 2002-09-18 2003-09-18 Loading trough for a load-bearing vehicle
CA2505766A CA2505766C (en) 2002-09-18 2003-09-18 A bunk for a load-carrying vehicle
FI20050292A FI124306B (en) 2002-09-18 2005-03-18 Bank for trucking

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0202763A SE0202763L (en) 2002-09-18 2002-09-18 Bank for trucking
SE0202763-9 2002-09-18

Publications (1)

Publication Number Publication Date
WO2004026667A1 true WO2004026667A1 (en) 2004-04-01

Family

ID=20289024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2003/001466 Ceased WO2004026667A1 (en) 2002-09-18 2003-09-18 A bunk for a load carrying vehicle

Country Status (6)

Country Link
AU (1) AU2003263711A1 (en)
CA (1) CA2505766C (en)
DE (1) DE10393286T5 (en)
FI (1) FI124306B (en)
SE (1) SE0202763L (en)
WO (1) WO2004026667A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828328B2 (en) 2008-10-29 2010-11-09 Caterpillar Forest Products Inc System and method for a forwarder headboard
DE102011006895A1 (en) 2010-04-09 2011-10-13 John Deere Forestry Oy Partition wall for loading space of forestry machine or timber trailer, comprises multiple partition wall bars, and multiple support portions, which lie transverse to partition wall bars
DE102011006894A1 (en) 2010-04-09 2011-10-13 John Deere Forestry Oy Partition wall construction for storage space of forestry machine e.g. harvester, has vertical partition walls coupled at frame in two different positions and serving as protecting wall construction
US8191928B2 (en) 2008-10-29 2012-06-05 Caterpillar Forest Products Inc. Stabilizing assembly for a forwarder headboard and method
CN103640510A (en) * 2013-10-31 2014-03-19 山东巨威机械有限公司 Small-size forest region conveyor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116731A1 (en) 2011-09-02 2013-03-07 Johann Sedlmayer Rear wagon workstation for forestry and agricultural use
DE202011110846U1 (en) 2011-09-02 2016-10-24 Johann Sedlmayer Rear wagon workstation for forestry and agricultural use
DE202021106927U1 (en) * 2021-12-09 2022-04-19 Johann Sedlmayer Arrangement for changing the size of a load space

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE812284C (en) * 1948-10-02 1951-08-27 Siegener Eisenbahnbedarf A G Post for long timber transport wagons
US2754769A (en) * 1952-06-30 1956-07-17 Yorston James Keith Bunk stakes for use on logging trucks, railway flat cars and the like
SE361295B (en) * 1971-11-02 1973-10-29 Invention Marketing Ab
EP0043178A2 (en) * 1978-08-02 1982-01-06 Emmanuel Servatius Maria Spronck Foldable platform sideboard for trucks and trailers
EP1084941A2 (en) * 1999-09-16 2001-03-21 Einar Karlsson Loading space on transport vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE812284C (en) * 1948-10-02 1951-08-27 Siegener Eisenbahnbedarf A G Post for long timber transport wagons
US2754769A (en) * 1952-06-30 1956-07-17 Yorston James Keith Bunk stakes for use on logging trucks, railway flat cars and the like
SE361295B (en) * 1971-11-02 1973-10-29 Invention Marketing Ab
EP0043178A2 (en) * 1978-08-02 1982-01-06 Emmanuel Servatius Maria Spronck Foldable platform sideboard for trucks and trailers
EP1084941A2 (en) * 1999-09-16 2001-03-21 Einar Karlsson Loading space on transport vehicles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7828328B2 (en) 2008-10-29 2010-11-09 Caterpillar Forest Products Inc System and method for a forwarder headboard
US8191928B2 (en) 2008-10-29 2012-06-05 Caterpillar Forest Products Inc. Stabilizing assembly for a forwarder headboard and method
DE102011006895A1 (en) 2010-04-09 2011-10-13 John Deere Forestry Oy Partition wall for loading space of forestry machine or timber trailer, comprises multiple partition wall bars, and multiple support portions, which lie transverse to partition wall bars
DE102011006894A1 (en) 2010-04-09 2011-10-13 John Deere Forestry Oy Partition wall construction for storage space of forestry machine e.g. harvester, has vertical partition walls coupled at frame in two different positions and serving as protecting wall construction
CN103640510A (en) * 2013-10-31 2014-03-19 山东巨威机械有限公司 Small-size forest region conveyor

Also Published As

Publication number Publication date
DE10393286T5 (en) 2005-09-01
FI124306B (en) 2014-06-30
CA2505766A1 (en) 2004-04-01
SE521450C2 (en) 2003-11-04
CA2505766C (en) 2010-12-07
AU2003263711A1 (en) 2004-04-08
SE0202763D0 (en) 2002-09-18
SE0202763L (en) 2003-11-04
FI20050292L (en) 2005-03-18

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