DK144111B - SOIL WORKING MACHINE WITH OVERLOAD PROTECTION - Google Patents
SOIL WORKING MACHINE WITH OVERLOAD PROTECTION Download PDFInfo
- Publication number
- DK144111B DK144111B DK348174A DK348174A DK144111B DK 144111 B DK144111 B DK 144111B DK 348174 A DK348174 A DK 348174A DK 348174 A DK348174 A DK 348174A DK 144111 B DK144111 B DK 144111B
- Authority
- DK
- Denmark
- Prior art keywords
- chassis
- control cylinders
- tillage
- control cylinder
- cylinders
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B61/00—Devices for, or parts of, agricultural machines or implements for preventing overstrain
- A01B61/04—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame
- A01B61/044—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the connection between tools and carrier beam or frame the connection enabling a yielding pivoting movement around a substantially horizontal and transverse axis
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Description
1 144111 1 Opfindelsen angår en jordbearbejdningsmaskine omfattende et chassis med midler til dets kobling til en traktor og med en om en med maskinen på en vandret flade vandret, tværs på kørselsretningen liggende aksel drejelig steldel, der på 5 hver af to modstående sider er forsynet med et sæt jordbearbejdningsværktøjer, der er indrettet til sætvis efter ønske at bringes i arbejde, samt med en på chassiset monteret låsearm, der er indrettet til at fastlåse den drejelige steldel i to 180° vinkelforskudte stillinger svarende til 10 arbejdsstillingerne af de to sæt jordbearbejdningsværktøjer, hvorved den vandrette aksel ved enderne er lejret i på chassiset forskydelige lejer, som er kraftpåvirket af organer, der er indrettet til at afbalancere den på det i brugsstillingen værende sæt bearbejdningsværktøjer udøvede kraft 15 fra jorden, idet låsemekanismen er indrettet til at frigive steldelen til drejning, hvis den nævnte kraftpåvirkning på lejerne overstiger en maksimalt tilladelig værdi.The invention relates to a tillage machine comprising a chassis with means for coupling it to a tractor and having a rotating shaft rotating transverse to the horizontal on a horizontal plane, which is provided on each of two opposite sides with 5 axes. a set of tillage tools adapted to be set to work at will, as well as with a locking arm mounted on the chassis adapted to lock the rotatable frame in two 180 ° angular offset positions corresponding to the 10 positions of the two sets of tillage tools, the horizontal shaft at the ends is enclosed in displaceable bearings on the chassis, which are actuated by means adapted to balance the force 15 exerted on the set of working tools from the ground, the locking mechanism being arranged to release the frame part for rotation, if said force effect on the bearings exceeds a maximum permissible moisture value.
Fra beskrivelsen til fransk patent nr. 1 448 319 kendes en jordbearbejdningsmaskine af denne art, ved hvilken de nævn-20 te lejer er forskydelige på chassiset imod virkningen af en fjeder, således at jordbearbejdningsværktøjerne, når de møder en unormal modstand i jorden, vil få steldelen til at forskyde sig, hvorved et stop på steldelen slipper en holder på chassiset, hvorefter steldelen drejer sig under op-25 svingning af jordbearbejdningsværktøjerne. Den nævnte fjeder har en vis forspænding, som reguleres ved hjælp af en møtrik. Da fjederen er belastet hele tiden under driften, formindskes fjederkraften efterhånden, således at det er nødvendigt at efterspænde fjederen med korte mellemrum. Da 30 endvidere alle de bevægelige dele er udsat for både kraftpåvirkninger og forurening med jord, sker det ofte, at o- 2 UA111 1 verbelastningssikringen går i baglås og således ikke virker.From the specification of French Patent No. 1,448,319, there is known a tillage machine of this kind in which the said bearings are slidable on the chassis against the action of a spring, so that when they encounter an abnormal resistance in the soil, the tillage tools will have the frame part to displace, whereby a stop on the frame part releases a holder on the chassis, after which the frame part rotates during swinging of the tillage tools. Said spring has a certain bias which is regulated by means of a nut. Since the spring is constantly loaded during operation, the spring force decreases gradually, so that it is necessary to tighten the spring at short intervals. Furthermore, since all the moving parts are subjected to both force influences and contamination with soil, it often happens that the 2-UA111 1 verbal load protection is locked and thus does not work.
Opfindelsen har til formål at undgå disse ulemper, hvilket ifølge opfindelsen er opnået ved, at lejerne er forbundet med chassiset ved hjælp af hver sin hydrauliske kontrolcy-5 linder, medens låsearmen er påvirket af en hydraulisk styrecylinder, der er påvirket således af det væsketryk, der dannes i de hydrauliske kontrolcylindre, at låsearmen bevirker oplåsning af steldelen, når trykket i de to kontrolcylindre når en maksimalt tilladelig værdi svarende til den 10 maksimalt tilladelige kraft, der må udøves på jordbearbejdningsværktø j erne.The invention aims to avoid these drawbacks, which according to the invention are achieved by the bearings being connected to the chassis by means of each of its hydraulic control cylinders, while the locking arm is actuated by a hydraulic control cylinder so affected by the fluid pressure. it is formed in the hydraulic control cylinders that the locking arm causes the frame part to be unlocked when the pressure in the two control cylinders reaches a maximum permissible value corresponding to the maximum permissible force exerted on the tillage tools.
De på jordbearbejdningsværktøjerne udøvede jordkræfter optages således af væsken i de hydrauliske kontrolcylindre, hvorved den før omtalte kraftoptagende fjeder kan bortfal-15 de. Endvidere ligger de bevægede dele af mekanismen godt beskyttet.Thus, the earth forces exerted on the tillage tools are absorbed by the fluid in the hydraulic control cylinders, whereby the aforementioned force-absorbing spring may lapse. Furthermore, the moving parts of the mechanism are well protected.
Ved en udførelsesform er styrecylinderen forbundet direkte med de to hydrauliske kontrolcylindre ved hjælp af væskeledninger, hvori der er indskudt en justeret kontraventil, 20 som indtil et vist væsketryk lukker for væskens passage fra de to kontrolcylindre til styrecylinderen, samt en returkon traventil, der er indrettet til ved overskridelse af en bestemt trykforskel mellem styrecylinderen og kontrolcylindrene at lede væske fra styrecylinderen til kontrolcylindre-25 ne, medens ved en anden udførelsesform tilførslen og bortførslen af trykmiddel til og fra styrecylinderen bevirkes af en elektroventil, der styres af et elektrisk kredsløb, som omfatter to pressostater, som er underkastet det tryk, der hersker i de to kontrolcylindre, idet pressostaterne er 30 justeret efter det maksimalt tilladelige tryk i kontrolcylindrene.In one embodiment, the control cylinder is connected directly to the two hydraulic control cylinders by means of fluid lines in which is inserted an adjusted non-return valve 20 which, up to a certain fluid pressure, closes the fluid passage from the two control cylinders to the control cylinder, as well as a return cone traventil arranged for passing a certain pressure difference between the control cylinder and the control cylinders, liquid from the control cylinder to the control cylinders, while in another embodiment the supply and removal of pressure means to and from the control cylinder is effected by an electro-valve controlled by an electric circuit comprising two pressure switches which are subject to the pressure prevailing in the two control cylinders, the pressure switches being adjusted to the maximum allowable pressure in the control cylinders.
Opfindelsen vil blive forklaret nærmere i det følgende under henvisning til tegningen, der viser to forskellige udførelsesformer for en jordbearbejdningsmaskine ifølge opfin-35 delsen, og på hvilken fig. 1 skematisk viser de vigtigste dele 3 U4111 1 af jordbearbejdningsmaskinen iføl ge opfindelsen i en første udførelsesform, fig. 2 i snit og i større skala viser an-5 bringeisen af de på chassiset an bragte forskydelige lejer med hydrauliske kontrolcylindre, fig. 3 ligeledes i snit viser selve låsemekanismen, og 10 fig. 4 i vandret billede viser en ændret udførelsesform for jordbearbejdningsmaskinen ifølge opfindelsen.The invention will be explained in more detail below with reference to the drawing, which shows two different embodiments of a tillage machine according to the invention, and in which fig. 1 schematically shows the main parts 3 U4111 1 of the tillage machine according to the invention in a first embodiment; 2 in section and on a larger scale shows the application of the displaceable bearings mounted on the chassis with hydraulic control cylinders; FIG. 3 also in section shows the locking mechanism itself, and FIG. 4 is a horizontal view showing a modified embodiment of the tillage machine according to the invention.
Den i fig. 1 viste jordbearbejdningsmaskine, der er vist i vandret billede, består i det væsentlige af en steldel 1 og 15 et chassis 2. Steldelen 1 er rhombeformet og er anbragt med sin lange led parallelt med maskinens kørselsretning F, og den bæres af en tværgående vandret aksel 3, der forløber langs den korte diagonal af rhomben og er lejret i to forskydelige lejer 4, se også fig. 2, der er monteret på de to 20 ender af det U-formede chassis 2.The FIG. 1, shown in horizontal view, consists essentially of a frame part 1 and 15 a chassis 2. The frame part 1 is rhombic and is arranged with its long joint parallel to the direction of travel of the machine F and is carried by a transverse horizontal shaft 3, which extends along the short diagonal of the rhomb and is housed in two sliding bearings 4, see also FIG. 2, mounted on the two 20 ends of the U-shaped chassis 2.
Hvert leje 4 har en foring 6, hvori akslen 3 er lejret. Foringen 6 er således monteret i et hus 7, der er fastgjort til chassiset 2, at foringen 6 kan forskydes frem og tilbage parallelt med kørselsretningen F. Foringen 6 er i ét 25 stykke med en stempelstang 11 i en hydraulisk kontrolcylinder 12, hvis cylinderhus 13 er i ét stykke med huset 7, dvs. stift forbundet med chassiset 2. Stemplet i styrecylinderen 12 er betegnet med 14, og fra cylinderhuset 13 udr går en væskeledning 15.Each bearing 4 has a liner 6 in which the shaft 3 is mounted. The liner 6 is so mounted in a housing 7 attached to the chassis 2 that the liner 6 can be moved back and forth parallel to the driving direction F. The liner 6 is integral with a piston rod 11 in a hydraulic control cylinder 12, whose cylinder housing 13 is integral with the housing 7, i. rigidly connected to the chassis 2. The piston in the steering cylinder 12 is indicated by 14, and from the cylinder housing 13 a liquid conduit 15 extends.
30 Steldelen 1 bærer et arbejdsredskab, f.eks. et plovjern, i hver ende af dens lange diagonaler.The frame part 1 carries a working tool, e.g. a plow iron, at each end of its long diagonals.
Den forreste og den bageste ende af den drejelige steldel 1 bærer et låserogan 21, som kan indgribe i en udskæring 22 i en låsearm 23, der er drejlig om en aksel 24 i forhold 35 til chassiset 2. Akselen 24 står vinkelret på kørselsretningen F. Låsearmen 23 er påvirket af en hydraulisk styre- 4 144111 1 cylinder 27, hvis cylinderhus 28 er fast forbundet med maskinens chassis 2, medensstemplet 29 ved hjælp af en stempelstang 31 er forbundet med enden af låsearmen 23. En væskeledning 34 udmunder i cylinderhuset 28. En returfjeder 35 5 er indskudt mellem cylinderhuset 28 og den svingelige fri ende af låsearmen 23, således at sidstnævnte holdes trykket mod steldelens låseorgan 21. Det kammer 37 i cylinderhuset 28, hvori væskeledningen 34 udmunder, danner arbejdsHamme-ret til bevirkning af oplåsningen af steldelen 1, 10 De to væskeledninger 15, der er forbundet med kontrolcylindrene 12, er i forbindelse med den ledning, der fører til styrecylinderen 27 igennem en kontraventil 41, der indtil et vist tryk modsætter sig væskens gennemgang fra de to kontrolcylindre 12 til styrecylinderen 27, samt gennem en 15 retur-kontraventil 42, som under alle forhold stopper for væskens passage fra de to kontrolcylindre 12 til styrecylinderen 27, men tillader væskens passage fra styrecylinde-27 til kontrolcylindrene 12, hvis trykket i førstnævnte overstiger trykket i sidstnævnte med en vis værdi.The front and rear ends of the rotatable frame member 1 carry a locking rod 21 which can engage a cutout 22 in a locking arm 23 pivotal about a shaft 24 relative to the chassis 2. The shaft 24 is perpendicular to the driving direction F. The locking arm 23 is actuated by a hydraulic control cylinder 27, whose cylinder housing 28 is fixedly connected to the machine chassis 2, while the piston 29 is connected by means of a piston rod 31 to the end of the locking arm 23. A liquid line 34 opens into the cylinder housing 28. A return spring 35 is inserted between the cylinder housing 28 and the pivotal free end of the locking arm 23, so that the latter is kept pressed against the locking member 21. The chamber 37 in the cylinder housing 28, in which the liquid conduit 34 opens, forms the working hammer for effecting the locking of the frame part. 1, 10 The two fluid lines 15 connected to the control cylinders 12 are connected to the conduit leading to the control cylinder 27 through a check valve 41 which until a certain pressure opposes the passage of the fluid from the two control cylinders 12 to the control cylinder 27, as well as through a return check valve 42, which in all circumstances stops the passage of the fluid from the two control cylinders 12 to the control cylinder 27, but permits the passage of the liquid from the control cylinder-27 to the control cylinders 12 if the pressure in the former exceeds the pressure in the latter by a certain value.
20 Mekanismen virker på følgende måde; I hvilestillingen og i den normale arbejdsstilling indgriber låseorganet 21 med låsearmen 23. Når jordbearbejdningsværktøjet, f.eks. et i jorden arbejdende plovjern, møder en usædvanlig stor modstand, vil de to lejer 4 søge at forskyde sig i forhold til 25 chassiset 2 i retning af pilen F1 i modsat retning af kørselsretningen F, således at trykket i væsken stiger i de to kontrolcylindre 12 og i væskeledningerne 15, Når dette væsketryk passerer en forudbestemt maksimalværdi, der bestemmes af kontraventilen 41, vil denne åbne sig og lade væsken 30 passere gennem ledningen 34 ind i styrecylinderen 27. Væs-ketrykket i arbejdskammeret 37 i styrecylinderen 27 forskyder stemplet 29 i retning af pilen fl, se fig. 3, imod virk-· ningen af returfjederen 35, hvilket bevirker åbning af lå-searmen 23. Steldelen 1 kan nu drejes i forhold til chassis-35 et 2, og jordbearbejdningsværktøjet slipper den forhindring, der frembragte den store modstand. Fjernelsen af denne modstand får trykket til at falde i de to kontrolcylindre 12 5 144111 1 og i arbejdskammeret 37 i styrecylinderen 27, således at returfjederen 35 svinger låsearraen 23 tilbage til den aktive stilling, hvori det kan optage låseorganet 21 på den drejelig steldel 1, samtidig med at væsken i arbejdskamme-5 ret 37 i styrecylinderen 27 vender tilbage til kontrolcylindrene 12 gennem ledningen 34 og retur-kontraventilen 42.The mechanism works as follows; In the resting position and in the normal working position, the locking means 21 engages with the locking arm 23. When the tillage tool, e.g. a ground plow, meeting an unusually large resistance, the two bearings 4 will seek to displace relative to the chassis 2 in the direction of arrow F1 in the opposite direction of driving direction F, so that the pressure in the liquid increases in the two control cylinders 12 and in the fluid conduits 15, When this fluid pressure passes a predetermined maximum value determined by the check valve 41, it will open and allow the liquid 30 to pass through the conduit 34 into the control cylinder 27. The fluid pressure in the working chamber 37 of the control cylinder 27 displaces the plunger 29 in the direction. of the arrow fl, see FIG. 3, against the action of the return spring 35, which causes the opening of the locking arm 23. The frame part 1 can now be rotated relative to the chassis 35 and the tillage tool releases the obstacle which created the great resistance. The removal of this resistance causes the pressure to fall in the two control cylinders 12 and in the work chamber 37 of the control cylinder 27 so that the return spring 35 pivots the locking arm 23 back to the active position in which it can receive the locking means 21 on the rotatable frame part 1. at the same time that the liquid in the working chamber 37 in the control cylinder 27 returns to the control cylinders 12 through the conduit 34 and the return check valve 42.
Ved den ændrede udførelsesform i fig. 4, hvor der er anvendt samme henvisningsbetegnelser for tidligere omtalte dele, styres tilførslen af trykmedium til og fra styrecylin-10 deren 27 af en elektroventil 51 igennem en væskeledning 52, en trykledning 53 og en trykløs væskeledning 54.In the modified embodiment of FIG. 4, where the same reference numerals have been used for previously mentioned parts, the supply of pressure medium to and from the control cylinder 10 is controlled by an electro valve 51 through a liquid conduit 52, a pressure conduit 53 and a pressureless liquid conduit 54.
Elektroventilen 51 styres af et elektrisk kredsløb, hvori er indskudt to pressostater 56, hvis cylinderrum 57 er forbundet med de respektive kontrolcylindre 12 ved hjælp af 15 ledninger 58. De to pressostater 56 har hver en bevægelig kontakt 61 til lukning af fødekredsløbet for elektroventilen 51. Mekanismen omfatter endvidere en ekstra kontakt 63, som man kan betjene med hånden, enten direkte eller gennem et hvilket som helst egnet mekanisk system, og som kan give 20 direkte strømtilførsel til elektroventilen 51, således at man frivilligt kan bevirke oplåsning af den drejelige steldel 1.The electro-valve 51 is controlled by an electrical circuit into which are inserted two pressure switches 56, the cylinder compartment 57 of which is connected to the respective control cylinders 12 by means of 15 wires 58. The two pressure switches 56 each have a movable contact 61 for closing the feed circuit for the electro-valve 51. The mechanism further comprises an additional contact 63 which can be operated by hand, either directly or through any suitable mechanical system, and which can provide 20 direct power supply to the electro-valve 51, so as to voluntarily unlock the rotatable frame part 1 .
Denne mekanismes funktion er analog med funktionen af den i fig. 1 viste mekanisme, men med den forskel, at oplåsninr 25 gen af den drejelige steldel 1, dvs. aktiveringen af styrecylinderen 27, i stedet for at ske direkte ved trykforøgelsen i de to kontrolcylindre 12 sker ved styring fra elektroventilen 51, som aktiveres af kontakterne 61 i de to pressostater 56, når trykket i disse som følge af trykfor-30 øgeisen i de to kontrolcylindre 12 når den forudbestemte grænseværdi. Pressostaterne 56 er indstillet på en værdi, der svarer til åbningstrykket for kontraventilen 41 ved den i fig. 1 viste udførelsesform. Når den modstand, som jordbearbejdningsværktøjerne møder i jorden, forsvinder, falder 35 trykket i pressostaterne 56, og de elektriske kontakter 61 6 144111 1 åbnes, således at elektroventilen 51 ikke mere er aktive-ret, hvorved styrecylinderen 27 bliver trykløs, således at returfjederen 35, se fig. 3, bringer låsearmen 23 til den aktive stilling til låsning af steldelen 1, samtidig med at 5 stemplet i styrecylinderen 27 indtager sin hvilestilling.The function of this mechanism is analogous to that of the one shown in FIG. 1 but with the difference that the locking of the rotatable frame part 1, ie. the activation of the control cylinder 27, instead of directly by the pressure increase in the two control cylinders 12, is effected by control of the electro-valve 51, which is activated by the contacts 61 in the two pressure switches 56 when the pressure in these as a result of the pressure increase in the two control cylinders 12 reach the predetermined limit value. The pressure switches 56 are set to a value corresponding to the opening pressure of the check valve 41 at the position shown in FIG. 1. When the resistance encountered by the soil tillage tools in the soil disappears, the pressure in the pressure switches 56 decreases and the electrical contacts 61 6 144111 1 are opened, so that the electro-valve 51 is no longer activated, whereby the control cylinder 27 becomes pressure-free, so that the return spring 35 , see fig. 3, the locking arm 23 brings to the active position for locking the frame part 1, while the piston 5 in the control cylinder 27 takes up its resting position.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7323993 | 1973-06-29 | ||
FR7323993A FR2234835B1 (en) | 1973-06-29 | 1973-06-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK348174A DK348174A (en) | 1975-02-10 |
DK144111B true DK144111B (en) | 1981-12-14 |
DK144111C DK144111C (en) | 1982-04-26 |
Family
ID=9121814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK348174A DK144111C (en) | 1973-06-29 | 1974-06-28 | SOIL WORKING MACHINE WITH OVERLOAD PROTECTION |
Country Status (9)
Country | Link |
---|---|
BE (1) | BE817073A (en) |
DE (2) | DE2431754A1 (en) |
DK (1) | DK144111C (en) |
FR (1) | FR2234835B1 (en) |
GB (1) | GB1438442A (en) |
IE (1) | IE39580B1 (en) |
IT (1) | IT1015471B (en) |
LU (1) | LU70430A1 (en) |
NL (1) | NL7408883A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106311521B (en) * | 2016-10-14 | 2024-02-20 | 铁道第三勘察设计院集团有限公司 | Rail number spraying device using rail measuring trolley as carrier |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1441773A (en) * | 1921-07-25 | 1923-01-09 | Joseph S Witter | Tractor plow |
DK82861C (en) * | 1951-04-14 | 1957-05-27 | Massey Harris Ferguson Ltd | Tillage equipment for a tractor. |
-
1973
- 1973-06-29 FR FR7323993A patent/FR2234835B1/fr not_active Expired
-
1974
- 1974-06-27 LU LU70430A patent/LU70430A1/xx unknown
- 1974-06-28 DK DK348174A patent/DK144111C/en active
- 1974-06-28 IT IT2450974A patent/IT1015471B/en active
- 1974-06-28 BE BE146071A patent/BE817073A/en not_active IP Right Cessation
- 1974-06-28 DE DE19742431754 patent/DE2431754A1/en active Pending
- 1974-06-28 DE DE19747422511 patent/DE7422511U/en not_active Expired
- 1974-07-01 IE IE138574A patent/IE39580B1/en unknown
- 1974-07-01 NL NL7408883A patent/NL7408883A/xx unknown
- 1974-07-01 GB GB2912574A patent/GB1438442A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1015471B (en) | 1977-05-10 |
DE7422511U (en) | 1974-12-12 |
LU70430A1 (en) | 1974-10-17 |
IE39580L (en) | 1974-12-29 |
BE817073A (en) | 1974-10-16 |
FR2234835A1 (en) | 1975-01-24 |
DK348174A (en) | 1975-02-10 |
GB1438442A (en) | 1976-06-09 |
DK144111C (en) | 1982-04-26 |
DE2431754A1 (en) | 1975-01-23 |
NL7408883A (en) | 1974-12-31 |
IE39580B1 (en) | 1978-11-08 |
FR2234835B1 (en) | 1976-05-07 |
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