SI25492A - Forest trailer with protective mechanism for tines - Google Patents

Forest trailer with protective mechanism for tines Download PDF

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Publication number
SI25492A
SI25492A SI201700240A SI201700240A SI25492A SI 25492 A SI25492 A SI 25492A SI 201700240 A SI201700240 A SI 201700240A SI 201700240 A SI201700240 A SI 201700240A SI 25492 A SI25492 A SI 25492A
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SI
Slovenia
Prior art keywords
carrier
screw
tine
trailer
forest
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SI201700240A
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Slovenian (sl)
Inventor
Franc Pišek
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PIĹ EK - VITLI KRPAN d.o.o.
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Application filed by PIĹ EK - VITLI KRPAN d.o.o. filed Critical PIĹ EK - VITLI KRPAN d.o.o.
Priority to SI201700240A priority Critical patent/SI25492A/en
Priority to PCT/SI2018/050027 priority patent/WO2019040006A1/en
Publication of SI25492A publication Critical patent/SI25492A/en

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    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Tires In General (AREA)
  • Catching Or Destruction (AREA)

Abstract

Izum sodi v področje strojništva, natančneje v področje gozdarskih prikolic za prevoz različnega težkega tovora zlasti posekanih hlodov. Natančneje izum sodi v mehanske konstrukcije varoval pri rogljih (ročkah / ročicah) gozdarske prikolice. Gozdarska prikolica z varovalnim mehanizmom rogljev je opremljena z enim ali več parov vzporednih rogljev nameščenih v nosilcih (2, 2') na vzdolžnih delih (1a in 1 b) šasije (1). Nosilci (2 in 2') imajo spodnje robove odrezane tako, da imajo robovi skoraj obliko kroga, prednostno ovala ali pa različne približno pravokotne izreze. Roglji (3 in 3') v spodnjem delu imajo vijake (4) v eni steni roglja, kar omogoča omejevanje rotacijskega gibanja posameznega roglja znotraj valjastega nosilca.The invention belongs to the field of mechanical engineering, and more precisely to the field of forestry trailers for the transport of various heavy loads, especially logs harvested. More precisely, the invention belongs to the mechanical construction of guards of the logs (handles / arms) of the forestry trailer. A forest trailer with a safety mechanism of the torso is equipped with one or more pairs of parallel pins mounted in the carriers (2, 2 ') in the longitudinal portions (1a and 1b) of the chassis (1). The supports (2 and 2 ') have the lower edges cut off so that the edges have almost the shape of the circle, preferably the oval or different approximately rectangular cuts. The hinges (3 and 3 ') in the lower part have screws (4) in one rope wall, which allows limiting the rotational movement of each nib inside the cylindrical carrier.

Description

Gozdarska prikolica z varovalnim mehanizmom rogljevForest trailer with ratchet mechanism

Področje tehnikeField of technique

Izum sodi v področje strojništva, natančneje v področje gozdarskih prikolic za prevoz različnega težkega tovora zlasti posekanih hlodov. Natančneje izum sodi v mehanske konstrukcije varoval pri rogljih (ročkah / ročicah) gozdarske prikolice.The invention belongs to the field of mechanical engineering, and more precisely to the field of forestry trailers for the transport of various heavy loads, especially logs harvested. More precisely, the invention belongs to the mechanical construction of guards of the logs (handles / arms) of the forestry trailer.

Tehnični problemTechnical problem

Tehnični problem, ki ga pričujoči izum rešuje, je konstrukcija varovalnega mehanizma na rogljih (ročkah / ročicah) gozdarske prikolice za prevoz težkega tovora, zlasti hlodov iz gozda. Konstrukcija naj omogoča zasuke rogljev prazne ali polne gozdarske prikolice okoli osi do vnaprej določenih kotov. Zastavljeni problem je, kako omejiti zasuk v levo ali desno pri prosto vstavljenih rogljih v držala, ki so običajno nameščena po parih soosno na vzdolžnih stranicah prikolice. Pri prevozu prazne prikolice se roglji prosto premikajo levo in desno glede na gibanje prikolice. Včasih se obrnejo tako, da jih je potrebno ročno vrniti nazaj, kar zaradi oblike in teže rogljev predstavlja vozniku problem. Če se gibanje rogljev okoli osi držal omeji za določen kot, se lahko zgodi, da se pri nakladanju hlodov ali naletu na oviro z rogljem, deformira ali odlomi držalo in pri večjih silah tudi ogrodje prikolice. Zaradi tega je potrebno predvideti možnost, da se zlomi samo varovalni oz. omejevalni del roglja. S konstrukcijsko rešitvijo varovala naj bo poleg preprečevanja popolne rotacije rogljev omogočena tudi funkcija varovanja rogljev proti izpadu iz nosilca.The technical problem solved by the present invention is the construction of a protective mechanism on the horns (arms / arms) of a forestry trailer for the transportation of heavy cargo, in particular logs from the forest. The construction should allow the shafts to be pushed by empty or full forest trailers around the axis to the predefined angles. The problem posed is how to limit the turning to the left or to the right with the freely inserted horns in the holders, which are usually arranged in pairs paired on the longitudinal sides of the trailer. When carrying an empty trailer, the crochet moves freely to the left and to the right according to the movement of the trailer. Sometimes they turn in such a way that they need to be returned manually, which is due to the shape and weight of the pins. If the movement of the tines around the axle is held down by a certain angle, it may happen that when loading the logs or encountering a barrier with a hook, the holder is deformed or decoupled, and in the case of major forces, the trailer frame. For this reason, it is necessary to foresee the possibility of breaking only the protective the limiting part of the ratchet. In addition to preventing the complete rotation of the tines, the protection solution of the guard should also provide the function of protecting the torso against the failure of the carrier.

Znano stanje tehnikeA known state of the art

Znana je rešitev avstrijske družbe STEPA, ki za omejevanje rotacijskega gibanja rogljev v nosilcu uporablja vijak, ki je nameščen v spodnjem delu roglja pod spodnjim robom odrezanega nosilca. Vijak je nameščen skozi rogelj, tako da je na eni strani glava vijaka, na drugi strani vijaka pa je privita matica.The solution of the Austrian company STEPA is known, which, in order to limit the rotational movement of the tines in the carrier, uses a screw which is located in the lower part of the tine beneath the lower edge of the cut carriage. The screw is positioned through the horn so that the screw head is on one side and the nut is screwed on the other side of the screw.

Večina rogljev gozdarskih prikolic nima nobene dodatne zaščite ali priprav za omejevanje rotacije znotraj nosilca roglja.Most towers of forestry caravans do not have any additional protection or devices for limiting rotation inside the carriage carrier.

Opis rešitve tehničnega problemaDescription of the solution of the technical problem

Bistvo gozdarske prikolice z varovalnim mehanizmom rogljev po izumu je v tem, da je običajno opremljena z enim ali več parov vzporednih rogljev nameščenih v nosilcih, ki imajo spodnje robove prednostno odrezane pod kotom ali pa imajo različne ovalne in/ali pravokotne izreze. Roglji imajo v spodnjem delu vijake v eni steni roglja, kar omogoča omejevanje rotacijskega gibanja posameznega roglja znotraj valjastega nosilca. Za zanesljivo delovanje varovalnega vijaka je ključna geometrija spodnjega roba nosilca in mesta namestitve vijaka. V primeru prevelike sile naloženih hlodov na posamezen rogelj ali več rogljev in v primeru naleta na oviro z rogljem, bo vnaprej določena strižna sila roba nosilca na matico vijaka le-tega odlomila, kar bo preprečilo poškodbe na nosilnih elementih.The essence of a forestry trailer with a tooth guard mechanism according to the invention is that it is usually equipped with one or more pairs of parallel hinges mounted in beams which have lower edges preferably cut off at an angle or have different oval and / or rectangular cuts. The horns have a knot in the lower part of the screws in one wall of the rope, which allows the rotation movement of the individual nib in the cylindrical carrier to be limited. The geometry of the lower edge of the bracket and the mounting position of the screw is the key to the safe operation of the safety screw. In the event of an excessive force of the logs loaded on a single horn or more of the hooks and in the event of an encounter with a hinge, the pre-determined shear force will break the edge of the holder on the nut of the screw thereof, thereby preventing damage to the carrier elements.

Gozdarska prikolica z varovalnim mehanizmom rogljev bo v nadaljevanju podrobneje opisana s pomočjo slik, ki kažejo:A forest trailer with a needle guard mechanism will be described in more detail below with pictures showing:

Slika 1 gozdarska prikolica z varovalnim mehanizmom rogljev,Figure 1 a forest trailer with a safety mechanism of the horns,

Slika 2 prikaz nosilca in roglja po izvedbenem primeru I,Figure 2 shows a carrier and an angle according to embodiment I,

Slika 3 prikaz nosilca in roglja po izvedbenem primeru II.Figure 3 shows the carrier and the tine according to embodiment II.

Gozdarska prikolica z varovalnim mehanizmom rogljev je opremljena z enim ali več parov vzporednih rogljev nameščenih v nosilcih 2, 2' na vzdolžnih delih 1a in 1b šasije 1. Nosilci 2 in 2' imajo spodnje robove odrezane tako, da imajo robovi približno obliko kroga, prednostno ovala ali pa različne izreze poljubne oblike. Roglji 3 in 3' v spodnjem delu imajo vijake 4 v eni steni roglja, kar omogoča omejevanje rotacijskega gibanja posameznega roglja znotraj valjastega nosilca.A forest trailer with a safety mechanism of the tines is provided with one or more pairs of parallel pins mounted in the beams 2, 2 'in the longitudinal portions 1a and 1b of the chassis 1. Bearers 2 and 2' have the lower edges cut off so that the edges have approximately the shape of the circle, oval or different cuts of any shape. Rugs 3 and 3 'in the lower part have screws 4 in one of the rope's ropes, which allows limiting the rotational movement of each nib inside the cylindrical carrier.

Gozdarska prikolica z varovalnim mehanizmom rogljev ima na vzdolžna dela 1a in 1b šasije 1 navarjene pare nosilcev 2 in 2'. V nosilce 2 in 2' so nameščeni pari rogljev 3 in 3'. Rogelj 3 je oblikovan tako, da je spodnji del kratek valj, katerega os je v osi nosilca 2. Na vzdolžnih delih 1a in 1b šasije 1 je lahko nameščenih in/ali navarjenih različno število nosilcev 2 in 2', kar je običajno odvisno od velikosti gozdarske prikolice.A forest trailer with a guard mechanism of the pins has on the longitudinal portions 1a and 1b the chassis 1 of the welded steam of the beams 2 and 2 '. The pairs 2 and 2 'are provided with pairs of torsos 3 and 3'. The rope 3 is formed in such a way that the lower part is a short cylinder whose axis is in the axis of the carrier 2. In the longitudinal portions 1a and 1b of the chassis 1, a different number of carriers 2 and 2 'can be mounted and / or welded, which usually depends on the size forest trailers.

Ko se v nosilec 2 namesti rogelj 3, se v spodnji del roglja 3 v vnaprej pripravljeno luknjo pritrdi vijak 4 z matico ali katerikoli drugi varovalni ali strojni element. Enako se na drugi strani v nosilec 2' namesti rogelj 3' in se v spodnji del roglja 3 v vnaprej pripravljeno luknjo pritrdi vijak 4 z matico ali katerikoli drugi varovalni ali strojni element. Oblika spodnjega roba 21 nosilca 2 in vijak 4 v roglju 3 določata maksimalen kot rotacije okoli vertikalne osi nosilca na levi in desni strani.When the hinge 3 is installed in the carrier 2, the screw 4 is fastened with a nut or any other protective or mechanical element to the lower part of the tongue 3 in the pre-prepared hole. Likewise, on the other hand, the hinge 3 'is mounted on the carrier 2' and the screw 4 is fixed with the nut or any other protective or mechanical element in the pre-prepared hole in the lower part of the tongue 3. The shape of the lower edge 21 of the carrier 2 and the screw 4 in the hinge 3 determine the maximum angle of rotation around the vertical axis of the carrier on the left and to the right.

Gozdarska prikolica z varovalnim mehanizmom rogljev ima lahko nosilca 2 in 2', ki imata poleg ovalnega spodnjega roba še izrez primerne oblike, prednostno pravokotne ali trapezne oblike. Vijak 4 z matico je lahko katerikoli drugi varovalni ali strojni element. Pozicija vijaka 4 na roglju 3 določa maksimalen kot rotacije okoli vertikalne osi nosilca 2. Gozdarska prikolica z varovalnim mehanizmom rogljev ima tak spodnji rob ali izrez na nosilcu 2, da pri preobremenitvi roglja 3 odreže matico vijaka 4 in sprosti gibanje roglja 3. Na drugi strani spodnji rob ali izrez na nosilcu 2' pri preobremenitvi roglja 3' odreže matico vijaka 4 in sprosti gibanje roglja 3'.A forest trailer with a safety mechanism of the pins can be provided with supports 2 and 2 'which, in addition to the oval lower edge, are also a cutout of a suitable shape, preferably rectangular or trapezoidal shape. The screw 4 with the nut can be any other protective or mechanical element. The position of the screw 4 on the tine 3 determines the maximum angle of rotation around the vertical axis of the carrier 2. The forest trailer with the guard mechanism of the pins has such a lower edge or cutout on the carrier 2 to cut off the nut of the screw 4 and to release the movement of the tine at the overload of the tine 3, the lower edge or the cut-out on the carrier 2 'releases the knurled bolt 4 at the overload of the tine 3' and releases the movement of the tine 3 '.

Gozdarska prikolica z varovalnim mehanizmom rogljev po izvedbenem primeru I ima na vzdolžna dela šasije navarjene pare nosilcev 22, prednostno pravokotno na vzdolžno os šasije. V pare nosilcev 22 so nameščeni pari rogljev 32. Rogelj 32 je oblikovan tako kot rogelj 3 iz slike 1. Rogelj na drugi strani šasije 1 pa je zrcalna slika roglja 32. V izvedbenem primeru I je spodnji rob 221 nosilca 22 oblikovan tako, da je spodnji del odrezan pod kotom in ima obliko elipse z odprtim delom navzven.A forest trailer with a safety mechanism of the nets according to embodiment I has on its longitudinal portions the chassis of the welded steam of the beams 22, preferably perpendicular to the longitudinal axis of the chassis. The pairs of beams 32 are arranged in the pairs of beams 32. The ropes 32 are shaped like the crochet 3 of Figure 1. The rope on the other side of the chassis 1 is a mirror image of the tine 32. In embodiment I, the bottom edge 221 of the carrier 22 is formed such that the lower part is cut off at an angle and has the shape of an ellipse with an open part outwards.

Gozdarska prikolica z varovalnim mehanizmom rogljev po izvedbenem primeru II ima na vzdolžna dela šasije navarjene pare nosilcev 23 prednostno pravokotno na vzdolžno os šasije. V pare nosilcev 23 so nameščeni pari rogljev 33. Rogelj 33 je oblikovan tako kot rogelj 3 iz slike 1. Rogelj na drugi strani šasije 1 pa je zrcalna slika roglja 33. V izvedbenem primeru II je nosilec 23 oblikovan tako, da je izrez na nosilcu 23 primerne oblike, ki še zagotavlja varnostno funkcijo preobremenitve in obenem omogoča zasuk ročice do vnaprej določenega kota. Odvisno od rotacijskega gibanja roglja 33 bo vijak 4 na levi ali na desni strani.The forest trailer with the safety mechanism of the tines according to embodiment II has, on the longitudinal portions of the chassis of the welded steam of the beams 23, preferably perpendicular to the longitudinal axis of the chassis. The pairs of beams 33 are mounted in pairs of beams 33. The rope 33 is formed like the crochet 3 of Figure 1. The rotor on the other side of the chassis 1 is a mirror image of the tine 33. In embodiment II, the carrier 23 is formed such that the cut-out on the carrier 23 is a suitable form which still provides a safety function of overload and at the same time allows the lever to rotate to a predetermined angle. Depending on the rotational movement of the tongue 33, the screw 4 will be on the left or on the right.

Značilnost pričujočega izuma je v tem, da je z oblikovno rešitvijo nosilca in spodnjega dela roglja opremljenega z vijakom ali katerimkoli drugim varovalnim ali strojnim elementom, kot omejevalnikom rotacijskega gibanja roglja in varovanja roglja proti izpadu, omogočena funkcija varovanja osnovnih nosilnih elementov gozdarske prikolice kot so šasija, nosilci in roglji. Konstrukcijska zasnova nosilca, roglja in vijaka je taka, da omogoča rotacijsko gibanje roglja znotraj nosilca do vnaprej določenega kota in onemogoča izpad roglja iz nosilca.It is a characteristic feature of the present invention to provide a function of protecting the basic carrier elements of a forest trailer, such as a chassis, with the design solution of the carrier and the lower part of the ratchet, provided with a screw or any other guard or machining elements, as a limiter of the rotational movement of the toothed tooth guard and a guard against the failure. , carriers and crochets. The structural design of the carrier, the needle and the screw is such that it allows the rotation movement of the tine inside the carrier to a predetermined angle and prevents the rupture from the carrier.

Claims (7)

Patentni zahtevkiPatent claims 1. Gozdarska prikolica z varovalnim mehanizmom rogljev opremljena z enim ali več parov vzporednih rogljev nameščenih v nosilcih (2 in 2') na vzdolžnih delih (1a in 1b) šasije (1), značilna po tem, da imajo nosilci (2 in 2') spodnje robove odrezane, tako da imajo robovi približno obliko kroga, prednostno ovala ali pa različne izreze poljubne oblike; da imajo roglji (3 in 3') v spodnjem delu vijake (4) v eni steni roglja, kar omogoča omejevanje rotacijskega gibanja posameznega roglja znotraj valjastega nosilca.1. A forest trailer with a safety mechanism of the pins is provided with one or more pairs of parallel pins mounted in the brackets (2 and 2 ') in the chassis (1a and 1b) of the chassis (1), characterized in that the carriers (2 and 2' ) the lower edges are cut off so that the edges have approximately the shape of the circle, preferably the oval or the various cuts of any shape; (3 ' ' ' ' ') in the lower part of the screw (4) in the one wall of the tine, which enables the rotation movement of the individual tongue to be limited within the cylindrical carrier. 2. Gozdarska prikolica z varovalnim mehanizmom rogljev po zahtevku 1, značilna po tem, da se v nosilec (2) namesti rogelj (3) in se v spodnji del roglja (3) v vnaprej pripravljeno luknjo pritrdi vijak (4); da se tudi v nosilec (2') namesti rogelj (3') in se v spodnji del roglja (3) v vnaprej pripravljeno luknjo pritrdi vijak (4) z matico ali katerikoli drugi varovalni ali strojni element.2. The forest trailer with a toggle guard according to claim 1, characterized in that the hinge (3) is mounted in the carrier (2) and the screw (4) is fastened to the pre-prepared hole in the lower part of the nipple (3); (3 ') and the screw (4) is fastened with a nut or any other protective or mechanical element into the pre-prepared hole in the lower part of the tine (3). 3. Gozdarska prikolica z varovalnim mehanizmom rogljev po zahtevku 1 in 2, značilna po tem, da oblika spodnjega roba (21) nosilca (2) in vijak (4) v roglju (3) določa maksimalen kot rotacije okoli vertikalne osi nosilca (2).3. The forest trailer with a toggle guard according to Claims 1 and 2, characterized in that the shape of the lower edge (21) of the carrier (2) and the screw (4) in the hinge (3) define the maximum angle of rotation around the vertical axis of the carrier (2) . 4. Gozdarska prikolica z varovalnim mehanizmom rogljev po kateremkoli od predhodnih zahtevkov, značilna po tem, da imata nosilca (2 in 2') poleg ovalnega spodnjega roba še izrez primerne oblike, prednostno pravokotne ali trapezne oblike.A forest trailer with a safety mechanism of the tines according to any of the preceding claims, characterized in that the carriers (2 and 2 ') have, in addition to the oval lower edge, a cutout of a suitable shape, preferably rectangular or trapezoidal shape. 5. Gozdarska prikolica z varovalnim mehanizmom rogljev po kateremkoli od predhodnih zahtevkov, značilna po tem, da vijak (4) z matico lahko zamenja katerikoli drugi varovalni ali strojni element.A forest trailer with a toggle guard according to any one of the preceding claims, characterized in that the screw (4) with the nut can be replaced by any other guarding or machining element. 6. Gozdarska prikolica z varovalnim mehanizmom po kateremkoli od predhodnih zahtevkov značilna po tem, da pozicija vijaka (4) na roglju (3) določa maksimalen kot rotacije okoli vertikalne osi nosilca (2).A forest trailer with a guard mechanism according to any one of the preceding claims, characterized in that the position of the screw (4) on the tine (3) determines the maximum angle of rotation around the vertical axis of the carrier (2). 7. Gozdarska prikolica z varovalnim mehanizmom rogljev po kateremkoli od predhodnih zahtevkov, značilna po tem, da spodnji rob ali izrez na nosilcu (2) pri preobremenitvi roglja (3) odreže matico vijaka (4) in sprosti gibanje roglja (3); da na drugi strani spodnji rob ali izrez na nosilcu (2') pri preobremenitvi roglja (3') odreže matico vijaka (4) in sprosti gibanje roglja (3').7. The forest trailer with a safety mechanism of the tines according to any one of the preceding claims, characterized in that the lower edge or the cut-out on the carrier (2) releases the bolt nut (4) in the overload of the tine (3) and releases the movement of the tine (3); on the other hand, the lower edge or the cut-out on the carrier (2 ') releases the nut of the screw (4) in the overload of the tine (3') and releases the movement of the tine (3 ').
SI201700240A 2017-08-25 2017-08-25 Forest trailer with protective mechanism for tines SI25492A (en)

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Application Number Priority Date Filing Date Title
SI201700240A SI25492A (en) 2017-08-25 2017-08-25 Forest trailer with protective mechanism for tines
PCT/SI2018/050027 WO2019040006A1 (en) 2017-08-25 2018-08-20 Forestry trailer with a safety mechanism of spikes

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SI201700240A SI25492A (en) 2017-08-25 2017-08-25 Forest trailer with protective mechanism for tines

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WO (1) WO2019040006A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057286A (en) * 1975-11-26 1977-11-08 Rauma-Repola Oy Retaining member for vehicle chassis
SE442848C (en) * 1982-06-15 1986-06-02 Laxo Mekan Ab QUICK FIX FOR STOTTA
SE0401003L (en) * 2004-04-19 2005-09-13 Laxo Mekan Ab Post attachment for trucks
DE102011116731A1 (en) * 2011-09-02 2013-03-07 Johann Sedlmayer Rear wagon workstation for forestry and agricultural use

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Effective date: 20190315