DK144998B

DK144998B - TRAKER FRONT WEIGHT

Info

Publication number: DK144998B
Application number: DK292278AA
Authority: DK
Inventors: S S Kofoed
Original assignee: S S Kofoed
Priority date: 1977-07-07
Filing date: 1978-06-28
Publication date: 1982-07-26
Also published as: NO152598B; SE437685B; NO782314L; SE7807620L; DK144998C; DE2829193C2; NO152598C; DE2829193A1; FI78267B; FI78267C; FI782180A; DK292278A

Description

|j| (12) FREMLÆGGELSESSKRIFT od m998 B| j | (12) PRESENTATION WRITING od m998 B

/A\/ A \

(19) DANMARK(19) DENMARK

Dl REKTORATET FOR PATENT-OG VAREMÆRKEVÆSENETDl THE RECTORATE OF THE PATENT AND TRADEMARK

(21) Ansøgning nr. 2922/78 (51) IhtCl* B 62 D A9/08 (22) Indleveringsdag 28. jun. 1978 (24) Løbedag 28. jun. 1978 (41) Aim. tilgængelig 8. jan. 1979 (44) Fremlagt 2β. jul. 1982 (86) International ansøgning nr. - (86) International indleveringsdag (85) Videreførelsesdag - (62) Stamansøgning nr. -(21) Application No. 2922/78 (51) IhtCl * B 62 D A9 / 08 (22) Filing date 28 June. 1978 (24) Running day 28 June. 1978 (41) Aim. available 8 Jan. 1979 (44) Submitted 2β. Christmas. 1982 (86) International Application No - (86) International Filing Date (85) Forwarding Date - (62) Master Application No -

(30) Prioritet 7. jul. 1977, 28457/77, GB(30) Priority 7 Jul. 1977, 28457/77, GB

(71) Ansøger SVEND SONNE KOFOED, 2730 Herlev, DK.(71) Applicant SVEND SONNE KOFOED, 2730 Herlev, DK.

(72) Opfinder Samme.(72) Inventor Same.

(74) Fuldmægtig Internationalt Patent-Bureau.(74) Clerk International Patent Office.

(54) Tralctorfrontvægt.(54) Tralctor front weight.

Opfindelsen angår en traktorfrontvægt af den art, der til anbringelse på en tværdrager ved en traktors forende ved sin bagside har en udskæring, der ved sin overside er Udformet med en nedad fremspringende kantdel til anbringelse bag tværdragerens overside ved frontvægtens montering, medens frontvægten ved monteringen skydes ind under tværdrageren og fastlåses i forhold til denne.The invention relates to a tractor front weight of the type which, for mounting on a cross member at the front of a tractor at its rear, has a cutout formed at its upper side with a downwardly projecting edge portion for placement behind the upper side of the cross member during front mounting, while the front weight is slid during mounting. into the cross member and locked in relation to it.

D Når en traktor trækker et tungt belastende redskab eller køre- ® tøj efter sig, er det sædvanligvis nødvendigt at anbringe en ekstra T) vægt eller ballast ved traktorens forende for at sikre belastning af ^ forakselen og undgå, at traktoren tipper. Sådanne frontvægte, som i “ sig selv kendes i mange forskellige udformninger, er kun lejligheds- tD When a tractor pulls a heavy-duty implement or vehicle ® behind it, it is usually necessary to place an extra T) weight or ballast at the front of the tractor to ensure the load on the front axle and to prevent the tractor from tipping over. Such front weights, which in themselves are known in many different designs, are only occasional

DD

144998 2 vis i brug og skal derfor helst kunne monteres og afmonteres på enkel måde og uden anvendelse af specielt værktøj. På den anden side kræves det også, at frontvægten i brug sidder sikkert fast på tværdrageren ved traktorens forende, således at den ikke giver anledning til rystelser eller sideværts vægtforskydninger under kørslen.144998 2 show in use and should therefore preferably be able to be mounted and dismounted in a simple way and without the use of special tools. On the other hand, it is also required that the front weight in use is securely attached to the cross member at the front of the tractor, so that it does not give rise to vibrations or lateral weight shifts while driving.

Fra tysk fremlæggelsesskrift nr. 1.680.649 kendes et system af frontvægte, hvor låsning mellem de enkelte vægte indbyrdes og til traktorens tværdrager opnås automatisk ved formbindende indgreb mellem hager, fremspring og udsparinger, der er udformet såvel på vægtene som på tværdrageren, hvilket indebærer en kompliceret og dyr fremstilling af frontvægte og tværdragere.From German Offenlegungsschrift No. 1,680,649 a system of front weights is known, in which locking between the individual weights relative to each other and to the tractor's cross member is achieved automatically by form-binding engagement between hooks, projections and recesses formed on both the weights and the cross member. complicated and expensive manufacture of front weights and crossbeams.

Tilsvarende kendes fra tysk offentliggørelsesskrift nr. 2.059.208 et system af frontvægte, som ved hjælp af særlige tilslutningsled valgfrit kan anbringes ved traktorens forende eller bagende. Ved denne konstruktion har hver vægt en trapezformet udsparing og et hertil svarende triangulært vægtophæng, og de nævnte tilslutningsled er ligeledes udformede triangulært, så de passer til udsparingen i en vægt. Også i dette tilfælde kræves således en speciel vægtudformning og en ophængningsanordning på traktoren, der væsentligt afviger fra den sædvanligt benyttede tværdrager.Similarly, German Offenlegungsschrift No. 2,059,208 discloses a system of front weights which, by means of special connecting links, can optionally be placed at the front or rear of the tractor. In this construction, each weight has a trapezoidal recess and a corresponding triangular weight suspension, and the said connecting links are also designed triangularly so as to fit the recess in a weight. Also in this case a special weight design and a suspension device on the tractor are thus required, which differs significantly from the commonly used cross member.

Fra beskrivelsen til USA patent nr. 3.492.019 kendes en front-vægtudformning af den indledningsvis angivne art, hvor fastlåsning til tværdrageren opnås ved hjælp af en løs låsetap, som efter frontvægtens montering anbringes i et hul forneden ved udskæringen og stikker frem bag underkanten af tværdragerens bagside. Dette har i praksis den alvorlige ulempe, at den løse låsetap kan gå tabt alene ved de rystelser, som en traktor udsættes for under normal arbejds-kørsel, hvorved også frontvægten kan falde af traktoren.From the description of U.S. Pat. No. 3,492,019 a front-weight design of the type indicated in the introduction is known, in which locking to the cross member is achieved by means of a loose locking pin which, after mounting the front weight, is placed in a hole at the bottom of the cut-out and protrudes behind the lower edge of the back of the cross member. In practice, this has the serious disadvantage that the loose locking pin can be lost only by the vibrations to which a tractor is subjected during normal working driving, whereby the front weight can also fall off the tractor.

Endelig kendes fra tysk offentliggørelsesskrift nr. 2.548.977 en frontvægtudformning af den indledningsvis angivne art, hvor låsning opnås ved hjælp af et særligt spændestykke, som efter frontvægtens montering anbringes og fastskrues i en hertil udformet udsparing ved bunden af frontvægtens udskæring til låsende anlæg mod tværdragerens underside. Da der hertil kræves brug af værktøj, er anbringelsen af sådanne frontvægte, navnlig hvor flere frontvægte anbringes side om side på tværdrageren, forholdsvis tidsrøvende.Finally, German Offenlegungsschrift No. 2,548,977 discloses a front weight design of the type indicated in the introduction, in which locking is achieved by means of a special clamp which, after mounting the front weight, is placed and screwed into a recess formed at the bottom of the front weight cut-out for locking abutment against the cross member. underside. Since the use of tools is required for this, the placement of such front weights, in particular where several front weights are placed side by side on the cross member, is relatively time consuming.

Ifølge opfindelsen opnås en forenklet, automatisk virkende låseanordning for en frontvægt af den angivne art ved, at en låseklinke er bevægeligt, men umisteligt forbundet med frontvægten og er påvir- 3 144998 ket af en forspændingskraft til låsende anlæg mod tværdragerens underside, hvorhos låseklinken er således anbragt ved udskæringens underside i nærheden af dens lysåbning, at den tillader indskydning af frontvægten under tværdrageren mod forspændingskraften.According to the invention, a simplified, automatically acting locking device for a front weight of the type indicated is obtained in that a locking latch is movable but inextricably connected to the front weight and is actuated by a biasing force for locking abutment against the underside of the cross member, the locking latch being thus located at the underside of the cutout near its light opening that it allows the front weight to be pushed under the cross member against the biasing force.

Frontvægten ifølge opfindelsen anbringes på sædvanlig måde ved, at den nedhængende kantdel ved udskæringens overside haagtes ind bag tværdrageren ved dennes overside, hvorefter udskæringens underside skydes ind under tværdragerens underside. Vfed denne bevægelse af frontvægten vil låseklinken blive drejet mod forspændingskraften, således at bunden af frontvægtens udskæring kan bringes i anlæg mod tværdragerens forside. Når frontvægten på denne måde er bragt på plads, vil låseklinken som følge af forspændingskraften blive presset i låsende anlæg mod tværdragerens underside og herved sikre en pålidelig fastholdelse af frontvægten. Frigørelse af klinken fra det låsende anlæg mod tværdrageren sker på enkel måde ved, at klinken drejes mod forspændingskraften ind i den ved udskæringens underside udformede udsparing, således at den igen kan passere under tværdrageren.The front weight according to the invention is placed in the usual way by hooking the hanging edge part at the upper side of the cut-out behind the cross member at its upper side, after which the underside of the cut-out is slid under the underside of the cross-member. With this movement of the front weight, the locking latch will be rotated against the prestressing force, so that the bottom of the cut-out of the front weight can be brought into abutment against the front of the cross member. When the front weight has been put in place in this way, the locking latch will be pressed in locking abutment against the underside of the cross member as a result of the prestressing force, thereby ensuring a reliable holding of the front weight. Release of the latch from the locking abutment against the cross member takes place in a simple manner by turning the latch against the prestressing force into the recess formed at the underside of the cut-out, so that it can again pass under the cross member.

Med frontvægten ifølge opfindelsen opnås en hurtig og enkel montering og afmontering af frontvægten uden brug af værktøj og uden risiko for, at låseanordningen går tabt under arbejdskørsel. Yderligere kræves der ikke nogen speciel udformning af traktorens tværdrager, idet frontvægtens udskæring kan tilpasses de sædvanligt benyttede tværdragere med T-formet tværsnit.With the front weight according to the invention, a quick and simple assembly and disassembly of the front weight is achieved without the use of tools and without the risk of the locking device being lost during work driving. Furthermore, no special design of the tractor's crossmembers is required, as the cut-out of the front weight can be adapted to the commonly used crossmembers with a T-shaped cross section.

Opfindelsen forklares i det følgende nærmere under henvisning til den skematiske tegning, der kun viser de for forståelse af opfindelsen nødvendige enkeltheder, og hvor fig. 1 i tværsnit viser en udførelsesform for en frontvægt i-følge opfindelsen, fig. 2 en låseklinke til anvendelse ved den i fig. 1 viste udførelsesform, fig. 3 en anden udførelsesform med en alternativ udformning af låseklinken, og fig. 4 en modifikation ved frontvægten til lettelse af låseklinkens frigørelse.The invention is explained in more detail below with reference to the schematic drawing, which shows only the details necessary for understanding the invention, and in which fig. 1 shows in cross section an embodiment of a front weight according to the invention, fig. 2 is a locking latch for use with the device shown in FIG. 1, FIG. 3 shows a second embodiment with an alternative design of the locking latch, and fig. 4 a modification at the front weight to facilitate the release of the locking latch.

I fig. 1 er en frontvægt 1 med et håndtag 2 anbragt på en i tværsnit T-formet tværdrager 3 ved forenden af en ikke vist traktor. Til anbringelse på tværdrageren 3 har frontvægten 1 ved sin bagside en i sin helhed ved 4 betegnet udskæring, som ved sin overside har en nedad fremspringende kantdel 5, der ved frontvægtens montering hægtes ind bag overkanten af tværdrageren 3.In FIG. 1 is a front weight 1 with a handle 2 arranged on a cross-section T-shaped cross member 3 at the front end of a tractor (not shown). For mounting on the cross member 3, the front weight 1 has at its rear side a cutout denoted in its entirety by 4, which at its upper side has a downwardly projecting edge part 5 which, when the front weight is mounted, is hooked in behind the upper edge of the cross member 3.

4 1443984 144398

Ifølge opfindelsen er en låseklinke 6, som i den viste udførelsesform har en trekantagtig form, umisteligt og svingbart forbundet med frontvægten 1 ved hjælp af en drejetap 7 i nærheden af udskæringen 4's lysåbning. Som det nærmere vil fremgå af det følgende, er låseklinken 6 med henblik på låsende anlæg mod undersiden af tværdrageren 3 påvirket af en forspændingskraft til svingning i den ved en pil 8 viste retning af udskæringen 4.According to the invention, a locking latch 6, which in the embodiment shown has a triangular shape, is inextricably and pivotally connected to the front weight 1 by means of a pivot pin 7 in the vicinity of the light opening of the cut-out 4. As will appear in more detail below, with a view to locking abutments against the underside of the cross member 3, the locking latch 6 is influenced by a prestressing force for pivoting in the direction of the cut-out 4 shown by an arrow 8.

Som det nærmere er vist i perspektivbilledet i fig. 2, kan låseklinken 6 være udformet med to ligedannede sideflanger 9 og 10, som er indbyrdes forbundet over et mellemstykke 11. Låseklinken monteres på frontvægten 1 med sideflangerne 9 og 10 beliggende på hver sin side af en opretstående flange 12 ved bunden af udskæringen 4. På hver side af flangen 12 er der ved udskæringen 4's bund udformet en udsparing 13, i hvilken låseklinken 6 kan drejes ind mod den ved pilen 8 viste forspændingskraft og herved frigøres fra det låsende anlæg mod undersiden af tværdrageren 3.As shown in more detail in the perspective view in fig. 2, the locking latch 6 can be formed with two equal side flanges 9 and 10, which are interconnected over an intermediate piece 11. The locking latch is mounted on the front weight 1 with the side flanges 9 and 10 located on each side of an upright flange 12 at the bottom of the cut-out 4. On each side of the flange 12, a recess 13 is formed at the bottom of the cut-out 4, in which the locking latch 6 can be turned towards the prestressing force shown by the arrow 8 and thereby be released from the locking abutment towards the underside of the cross member 3.

Som det yderligere ses i fig. 2, har sideflangerne 9 og 10 til anlæg mod tværdrageren 3's underside over for hinanden liggende, ligedannede buede anlægsflader 14 og 15, hvis radiusafstand fra klinken 6's omdrejningsakse aftager i forspændingskraftens retning, hvorved der ved låsningen opnås en sikker fastkiling af låseklinken 6 mod tværdrageren 3's underside.As further seen in FIG. 2, the side flanges 9 and 10 for abutment against the underside of the cross member 3 have opposite, equally shaped curved abutment surfaces 14 and 15, the radius distance of the axis of rotation of the latch 6 decreases in the direction of biasing force, whereby a secure wedging of the latch 6 against the cross member 3 is obtained. underside.

Ved den i fig. 1 viste udførelsesform tilvejebringes den ved pilen 8 angivne forspændingskraft ved hjælp af en trykfjeder 16, hvis ene ende er anbragt i en i flangen 12 udformet boring 17, • medens den anden ende er i indgreb med en på låseklinken 61 s mellemstykke 11 fastsiddende fjedertap 18, der ses mere tydeligt i fig.2.In the case shown in FIG. 1, the biasing force indicated by the arrow 8 is provided by means of a compression spring 16, one end of which is arranged in a bore 17 formed in the flange 12, while the other end engages a spring pin 18 attached to the intermediate piece 11 of the locking latch 61. , which is seen more clearly in fig.2.

Ved frontvægtens montering vil låseklinken 6, efter at den nedad fremspringende kantdel 5 er hægtet ind bag tværdrageren 31 s overkant, ved svingningen af frontvægten automatisk blive drejet mod forspændingskraften til optagelse af sideflangerne 9 og 10 i udsparingerne 13, således at frontvægten uhindret kan skydes på plads med bunden af udskæringen 4 i anlæg mod tværdrageren 3's forside. Når frontvægten igen skal fjernes, drejes låseklinken 6 mod forspændingskraften, så den igen kan passere under tværdrageren 3. Med hen-When mounting the front weight, the locking latch 6, after the downwardly projecting edge part 5 has been hooked in behind the upper edge of the cross member 31, will automatically rotate against the prestressing force to receive the side flanges 9 and 10 in the recesses 13, so that the front weight can be slid space with the bottom of the cut-out 4 in abutment against the front of the cross member 3. When the front weight is to be removed again, turn the locking latch 6 against the prestressing force so that it can again pass under the cross member 3. With

Claims

5 144993 In view of this release movement, the locking latch 6 as shown in fig. 2 be formed with a handle 19. In fig. 3 shows another embodiment of a front weight according to the invention with an alternative design of the locking latch, here denoted by 6 ', where the prestressing force indicated by the arrow 8' is provided by means of an integral one with the locking latch 6 'formed, outside the cut-off counterweight 20 'hanging counter' 20. In order to obtain an easier rotation of the locking latch against the prestressing force and thus an easier release of the locking latch from the abutment towards the underside of the cross member, as can be seen in fig. 4, a pull cord 21 is used, which is connected to the one not shown in fig. 4 and is passed through the front weight 1’1 to a handle 22 accessible at the front thereof. 2 is not limiting of the invention, the latch e.g. instead of having two equal side flanges can be designed as a single segment-shaped plate element, and at the underside of the cut-out of the front weight corresponding thereto instead of that in fig. 1 can be formed in a recess in which such a plate element can be rotated in irriod the prestressing force.

Tractor front weight of a kind which, for mounting on a crossbar (3), has a cut-out (4) at the front of a tractor at its rear, which is formed at its upper side with a downwardly projecting edge part (5) for mounting behind the crossbar (3) upper side during mounting of the front weight, while the front weight during mounting is slid under the cross member (3) and locked relative thereto, characterized in that a locking latch (6) is movable but inextricably connected to the front weight (1) and is affected by a prestressing force ( 8) for locking abutment against the underside of the cross member (3), the locking latch (6) being arranged at the underside of the cut-out (4) in the vicinity of its light opening so as to allow the front weight (1) to be pushed under the cross member (3) against the biasing force (8). ).

Front weight as claimed in claim 1, characterized in that the locking latch (6) is pivotally connected to the front weight (1) and has a triangular shape with a curved abutment surface (14, 15) for abutment against the underside of the cross member (3), which abutment surface radius distance