CH392963A - Hydraulic system in connection with a transmission for agricultural tractors - Google Patents
Hydraulic system in connection with a transmission for agricultural tractorsInfo
- Publication number
- CH392963A CH392963A CH7459659A CH7459659A CH392963A CH 392963 A CH392963 A CH 392963A CH 7459659 A CH7459659 A CH 7459659A CH 7459659 A CH7459659 A CH 7459659A CH 392963 A CH392963 A CH 392963A
- Authority
- CH
- Switzerland
- Prior art keywords
- oil
- filter
- hydraulic system
- pump
- ring line
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
-
- 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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
- A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
- A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
- A01B63/1006—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor
- A01B63/1013—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means the hydraulic or pneumatic means structurally belonging to the tractor and being located inside the tractor body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Transmission Device (AREA)
- General Details Of Gearings (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Description
Hydraulikanlage in Verbindung mit einem Getriebe für Ackerschlepper Die Erfindung betrifft eine Hydraulikanlage in Verbindung mit einem Getriebe für Ackerschlepper, insbesondere einen mittels Drucköl betriebenen Kraft heber, der als zusätzliche Einrichtung an einem Ackerschlepper angeordnet ist. Hierbei wird das für den Betrieb der Anlage benötigte Öl dem Ölsumpf des Getriebes entnommen.
Zuvor muss dieses Öl jedoch gereinigt werden, wozu es durch ein Ölfilter geleitet wird, um Verunreinigungen auszuscheiden. Dieses Filter ist an geeigneter Stelle in dem Ölsumpf des Getriebes angeordnet.
Nach der Erfindung ist eine die Pumpe mit der Steuereinrichtung verbindende Ringleitung vonhan- den, die unterhalb des Ölspiegels eine durch das Filter gegen den Ölsumpf abgedeckte Öffnung aufweist, wo bei das Öl bei ruhendem Arbeitskolben in der Ring leitung ohne Filterung ständig umgewälzt wird und beim Arbeitshub die benötigte Ölmenge über das Filter aus dem Ölsumpf entnommen und beim Rück gang des Kolbens durch das Filter in umgekehrter Strömungsrichtung hindurch wieder zurückgegeben wird, so dass das Filter durch das zurückströmende Öl gereinigt wird.
Als Druckölerzeuger wird vorzugsweise eine Zahnradpumpe angeordnet, die beispielsweise von der Zapfwelle des Fahrzeuggetriebes angetrieben wird.
In der Zeichnung ist der Gegenstand der Er findung in einem Ausführungsbeispiel dargestellt, bei dem an das Getriebegehäuse eines Ackerschleppers ein gesonderter Behälter angeflanscht ist.
In dem Ölbehälter 1, der an das Gehäuse 2 für das Fahrzeuggetriebe angeflanscht ist, befindet sich das Filter 3. An dem Behälter 1 ist die das Drucköl erzeugende Pumpe 4 angeordnet, die mit dem Filter 3 durch die Saugleitung 5 verbunden ist. Von der Pumpe 4 führt die Druckölleitung 6 zu einem zur Steuereinrichtung gehörenden, als Umschaltorgan wirkenden Dreiweghahn 7,
der ausserdem durch die Ölrückführungsleitung 8 mit dem Filter 3 und durch die Leitung 9 mit dem Kraftkolben 10 verbunden ist. Mittels des Handgriffes 11 kann der Dreiweg haha 7 in die drei Stellungen 0 (Leerlauf), S (Senken) und H (Heben) verstellt werden. Die Pumpe 4 wird von der Zapfwelle 12 des Fahrzeug getriebes angetrieben.
Der Innenraum des Filters, Saugleitung 5, Pumpe 4, Druckleitung 6, Dreiweghahn 7 und Öl leitung 8 bilden eine Ringleitung, die eine im Ölbad liegende Öffnung 13 aufweist. Diese Öffnung 13 ist durch das Filter 3 abgedeckt. Das Öl kann also zwischen der Ringleitung und dem Ölbad durch das Filter hindurch in beiden Richtungen strömen. Bei ruhendem Arbeitszylinder wird das einmal dem Ge triebesumpf entnommene Öl in der Ringleitung durch die Pumpe 4 umgewälzt, ohne dass die, Maschen des Filters durchströmt werden.
Dabei ist der Hahn 7 um 90 gegen die gezeichnete Stellung im Uhrzeigersinne gedreht.
Beim Arbeitshub wird der Dreiweghahn 7 um 90 gegenüber der gezeichneten Stellung entgegen dem Uhrzeigersinn gedreht. Damit ist die Rückströmlei- tung 8 geschlossen, und die Pumpe saugt Öl aus dem Behälter 1, 2 an, wobei die Maschen des Filters von aussen nach innen durchströmt werden. Dabei setzen sich Schmutzteilchen aussen am Filter ab. Das angesaugte Öl wird durch die Leitung 6 und den Dreiweghahn 7 vor den Kraftkolben 10 gedrückt, wodurch die Last gehoben wird.
Zum Senken dreht man den Dreiweghahn zurück in die gezeichnete Stellung. Damit ist die Druckleitung 6 abgeschlossen und die Rückströmleitung 8 mit dem Druckzylinder verbunden. Nun strömt das Öl aus dem Zylinder aus und durch die Leitung 8 und die Maschen des Filters zurück in den Behälter 1, 2. Damit wird die Last gesenkt. Die Maschen des Filters werden diesmal umgekehrt durchströmt. Dabei werden die Schmutzteilchen durch das rückströmende Öl mitge rissen und setzen sich am Boden des Ölsumpfes ab. Das Filter reinigt sich also selbsttätig.
Nachdem die Last abgesenkt ist, wird der Drei weghahn wieder um 90 gegenüber der gezeichneten Stellung im Uhrzeigersinn gedreht, und das Öl in der Ringleitung 3 bis 8 umgewälzt, ohne dass es die Maschen des Filters durchströmt.
Hydraulic system in connection with a transmission for agricultural tractors The invention relates to a hydraulic system in connection with a transmission for agricultural tractors, in particular a power lifter operated by means of pressurized oil, which is arranged as an additional device on an agricultural tractor. The oil required to operate the system is taken from the gear unit's oil sump.
However, this oil must first be cleaned, for which purpose it is passed through an oil filter to separate out impurities. This filter is arranged at a suitable point in the oil sump of the transmission.
According to the invention, a ring line connecting the pump to the control device is provided, which has an opening covered by the filter against the oil sump below the oil level, where the oil is constantly circulated in the ring line without filtering when the working piston is at rest and during the working stroke the required amount of oil is taken from the oil sump via the filter and returned when the piston goes back through the filter in the opposite direction of flow so that the filter is cleaned by the oil flowing back.
A gear pump, which is driven, for example, by the power take-off shaft of the vehicle transmission, is preferably arranged as the pressure oil generator.
In the drawing, the object of the invention is shown in one embodiment, in which a separate container is flanged to the gear housing of a tractor.
The filter 3 is located in the oil container 1, which is flanged to the housing 2 for the vehicle transmission. The pump 4 which generates the pressurized oil and which is connected to the filter 3 by the suction line 5 is arranged on the container 1. From the pump 4, the pressure oil line 6 leads to a three-way valve 7 belonging to the control device and acting as a switching element.
which is also connected to the filter 3 through the oil return line 8 and to the power piston 10 through the line 9. The three-way haha 7 can be adjusted to the three positions 0 (idle), S (lowering) and H (lifting) by means of the handle 11. The pump 4 is driven by the PTO shaft 12 of the vehicle transmission.
The interior of the filter, suction line 5, pump 4, pressure line 6, three-way valve 7 and oil line 8 form a ring line which has an opening 13 located in the oil bath. This opening 13 is covered by the filter 3. The oil can flow through the filter in both directions between the ring line and the oil bath. When the working cylinder is at rest, the oil removed from the gear sump is circulated in the ring line by the pump 4 without the mesh of the filter being flowed through.
The cock 7 is rotated clockwise by 90 against the position shown.
During the working stroke, the three-way cock 7 is turned 90 counterclockwise from the position shown. The return line 8 is thus closed and the pump sucks in oil from the container 1, 2, the mesh of the filter being flowed through from the outside to the inside. Dirt particles are deposited on the outside of the filter. The sucked in oil is pressed through the line 6 and the three-way valve 7 in front of the power piston 10, whereby the load is lifted.
To lower, turn the three-way cock back into the position shown. The pressure line 6 is thus closed and the return line 8 is connected to the pressure cylinder. The oil now flows out of the cylinder and through the line 8 and the mesh of the filter back into the container 1, 2. This lowers the load. This time, the flow through the mesh of the filter is reversed. The dirt particles are swept away by the oil flowing back and settle on the bottom of the oil sump. The filter cleans itself automatically.
After the load has been lowered, the three-way valve is turned again by 90 in relation to the position shown in the clockwise direction, and the oil circulates in the ring line 3 to 8 without flowing through the mesh of the filter.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ6715A DE1124831B (en) | 1958-06-19 | 1958-06-19 | Hydraulic system in connection with a gear, in particular hydraulic or power lift system for Ackerschepper gear |
Publications (1)
Publication Number | Publication Date |
---|---|
CH392963A true CH392963A (en) | 1965-05-31 |
Family
ID=7619858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH7459659A CH392963A (en) | 1958-06-19 | 1959-06-18 | Hydraulic system in connection with a transmission for agricultural tractors |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH392963A (en) |
DE (1) | DE1124831B (en) |
GB (1) | GB883560A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2926338C2 (en) * | 1979-06-29 | 1983-12-15 | Franz 4047 Dormagen Henninghaus | Hydraulic system for tractors or working machines |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR704587A (en) * | 1929-09-28 | 1931-05-22 | Motor Improvements Inc | Improvements to filtration systems |
US2316729A (en) * | 1941-06-30 | 1943-04-13 | Napler & Son Ltd D | Tank for use in aircraft |
DE822773C (en) * | 1948-10-02 | 1951-11-29 | Heinrich Lanz Ag | Motor vehicle, in particular an agricultural tractor, with a hydraulic lifting device |
DE876929C (en) * | 1950-02-07 | 1953-05-18 | Andre Louis Aurelien Morgen | Hydraulic device for lifting and adjusting the working height of a tool carried by a tractor |
DE948763C (en) * | 1953-03-15 | 1956-09-06 | Kloeckner Humboldt Deutz Ag | Transmission with upstream two-group transmission and PTO drive for motor vehicles, especially tractors |
DE962758C (en) * | 1953-05-16 | 1957-04-25 | Bosch Gmbh Robert | Hydraulic lifting device, especially power lift for agricultural work equipment |
-
1958
- 1958-06-19 DE DEZ6715A patent/DE1124831B/en active Pending
-
1959
- 1959-06-18 CH CH7459659A patent/CH392963A/en unknown
- 1959-06-19 GB GB21207/59A patent/GB883560A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1124831B (en) | 1962-03-01 |
GB883560A (en) | 1961-11-29 |
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