DE1634692C3 - Slewing ring bearings for excavators, cranes or the like - Google Patents
Slewing ring bearings for excavators, cranes or the likeInfo
- Publication number
- DE1634692C3 DE1634692C3 DE19651634692 DE1634692A DE1634692C3 DE 1634692 C3 DE1634692 C3 DE 1634692C3 DE 19651634692 DE19651634692 DE 19651634692 DE 1634692 A DE1634692 A DE 1634692A DE 1634692 C3 DE1634692 C3 DE 1634692C3
- Authority
- DE
- Germany
- Prior art keywords
- piston
- ring
- cylinder
- bearing
- inner ring
- 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.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Support Of The Bearing (AREA)
Description
1 634 6S21 634 6S2
Nockenbahn 5 gepreßt wird, die nach dem Ausführungsbeispiel am Innenring 4 angebracht ist.Cam track 5 is pressed, which is attached to the inner ring 4 according to the embodiment.
Das Drucköl wird den Kolbenzylinderantrieben 1, 1', 1" über ein Steuerventil 2 zugeführt, welches an jedem Kolbenzylinderantrieb I5 1', 1" vorhanden und als Dreiwegeventil ausgebildet ist. Dieses Dreiwegeventil in Gestalt eines Steuerschiebers besitzt eine Zuflußöffnung 26 und eine Abflußöffnung 27 sowie eine mit dem Innenraum des Zylinders in Verbindung stehende Öffnung 28. Ein Betätigungsglied 13 in Gestalt eines Steuerschiebers verbindet die Öffnung 28 entweder mit der Zuflußöffnung 26 (Fig.4) oder mit der Abschlußöffnung 27. Der Steuerschieber wird zwischen diesen beiden Endstellungen dadurch verschoben, daß er von einer Ventilfeder 23 gegen einen weiteren Nockenring 12 gedrückt wird, der axial neben der Nockenbahn 5 am Innenring 4 vorgesehen ist. Hierdurch erfolgt eine Umsteuerung des Steuerventils 2 bei Drehung des Innenrings 4 gegenüber dem Außenring 3. Die Zuflußöffnungen 26 der Steureventile 2 sind an eine Leitung 7 angeschlossen, während die Abflußöffnungen 27 mit einer Leitung 6 in Verbindung stehen. Wenn die Leitung 7 an eine Druckölquelle angeschlossen wird und die Leitung 6 zugleich an eine Abflußleitung, dann dreht sich der Innenring4 im Gegenuhrzeigersinn entsprechend dem Pfeil gemäß Fig. 1, da der Kolbenzylinderantrieb 1 sich in der Neutralstellung befindet, der Kolbenzylinderantrieb 1' gegen Druckölzufluß gesperrt und für den Ölabfluß geöffnet ist, während der Kolbenzylinderantrieb 1" mit Drucköl gespeist wird. Wenn umgekehrt die Leitung 6 mit Drucköl gespeist wird und die Leitung 7 für den Ölabfluß geöffnet wird, dreht sich der Innenring 4 in entgegengesetzter Richtung, d. h. im Uhrzeigersinn und die Abflußöffnungen 27 stellen dann die Zuflußöffnungen dar,The pressure oil is fed to the piston-cylinder drives 1, 1 ', 1 "via a control valve 2, which is provided on each piston-cylinder drive I 5 1', 1" and is designed as a three-way valve. This three-way valve in the form of a control slide has an inflow opening 26 and an outflow opening 27 and an opening 28 connected to the interior of the cylinder. An actuator 13 in the form of a control slide connects the opening 28 either with the inflow opening 26 (FIG. 4) or with the closing opening 27. The control slide is displaced between these two end positions in that it is pressed by a valve spring 23 against a further cam ring 12 which is provided axially next to the cam track 5 on the inner ring 4. This results in a reversal of the control valve 2 when the inner ring 4 rotates with respect to the outer ring 3. The inflow openings 26 of the control valves 2 are connected to a line 7, while the outflow openings 27 are connected to a line 6. If the line 7 is connected to a pressure oil source and the line 6 is connected to a drain line at the same time, the inner ring 4 rotates counterclockwise according to the arrow in FIG and is open for the oil drainage, while the piston cylinder drive 1 "is fed with pressure oil. Conversely, when the line 6 is fed with pressure oil and the line 7 is opened for the oil drainage, the inner ring 4 rotates in the opposite direction, ie clockwise and the Outflow openings 27 then represent the inflow openings,
ίο während die Zuflußöffnungen 26 die Abflußöffnungen darstellen.ίο while the inflow openings 26 are the outflow openings represent.
Der Ringflansch 25 umschließt eine durchgehende öffnung 24, durch die Versorgungsleitungen eingeführt werden können. Es ist selbstverständlich auch möglich, den Innenring 4 am Untergestell zu befestigen und den Außenring 3 drehbar anzuordnen. Außerdem können in kinematischer Umkehrung zu der dargestellten Anordnung die Kolbenzylinderantriebe 1, 1', 1" am Innenring 4 und die Nockenbahn 5 und der Nockenring 12 am Ringflansch 25 angelenkt werden.The annular flange 25 encloses a continuous opening 24 through which the supply lines are introduced can be. It is of course also possible to attach the inner ring 4 to the sub-frame and to arrange the outer ring 3 so as to be rotatable. It can also be in kinematic inversion to In the arrangement shown, the piston-cylinder drives 1, 1 ', 1 "on the inner ring 4 and the cam track 5 and the cam ring 12 are hinged to the annular flange 25.
Außerdem können die Kolbenzylinderantriebe 1, 1', 1" auch parallel zur Achse 31, d. h. stehend, angeordnet sein und auf axiale Nocken anstatt auf radiale Nocken wirken. Diese Ausführung kann z.B. zweckmäßig sein, wenn der Durchmesser des Drehkranzes möglichst klein gehalten werden soll.In addition, the piston-cylinder drives 1, 1 ', 1 "can also be arranged parallel to the axis 31, i.e. upright and act on axial cams instead of radial cams. This embodiment can e.g. be useful if the diameter of the turntable is to be kept as small as possible.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (5)
. gekennzeichnet, daß die tangentiale Abstützung Ein Ausführungsbeispiel eines Drehkranzlagers5. slewing ring bearing according to claim 1, characterized by supporting outer or. Inner ring is hinged.
. characterized in that the tangential support An embodiment of a slewing ring bearing
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19651634692 DE1634692C3 (en) | 1965-08-12 | 1965-08-12 | Slewing ring bearings for excavators, cranes or the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19651634692 DE1634692C3 (en) | 1965-08-12 | 1965-08-12 | Slewing ring bearings for excavators, cranes or the like |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1634692A1 DE1634692A1 (en) | 1971-10-07 |
DE1634692B2 DE1634692B2 (en) | 1973-03-29 |
DE1634692C3 true DE1634692C3 (en) | 1973-10-11 |
Family
ID=5683635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19651634692 Expired DE1634692C3 (en) | 1965-08-12 | 1965-08-12 | Slewing ring bearings for excavators, cranes or the like |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1634692C3 (en) |
-
1965
- 1965-08-12 DE DE19651634692 patent/DE1634692C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1634692A1 (en) | 1971-10-07 |
DE1634692B2 (en) | 1973-03-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) |