DE1409655C

DE1409655C - Suction dredger

Info

Publication number: DE1409655C
Authority: DE
Inventors: Otto 2406 Stockeisdorf Gerber
Original assignee: O&K Orenstein and Koppel GmbH
Current assignee: CNH Industrial Baumaschinen GmbH
Publication date: 1972-05-18

Description

1 21 2

Die Erfindung betrifft einen Saugbagger, dessen Antrieb des vorderen Rohrteils zugeordneten Hydrau-Saugrohr aus zwei gelenkig miteinander verbundenen likpumpe anschließt, wenn der Rohrkrümmer beim. Rohrteilen besteht, bei denen am freien Ende des Absenken des Saugrohres seine unterste Stellung ervorderen Rohrteils der Saugkopf angeordnet ist und reicht hat. Hierdurch wird erreicht, daß das Saugrohr das freie Ende des hinteren Rohrteils gelenkig mit 5 während des Hebens und Senkens seine gestreckte einem Rohrkrümmer verbunden ist, der in einer senk- Lage ohne Zutun des Baggerführers selbständig beirechten Führung an der Bordwand des Baggerschiffes behält und auch Betriebsstörungen durch die Führunheb- und senkbar geführt ist, wobei zum Heben und gen der Seile nicht zu befürchten sind. Ein weiterer Senken des Saugrohres drei hydraulisch betätigte Vorteil des Saugbaggers nach der Erfindung besteht Flaschenzüge dienen, bei denen am Seil des ersten io darin, daß für den Antrieb der Hydraulikpumpen ein Flaschenzuges der Rohrkrümmer, am Seil des zwei- Motor mit verhältnismäßig geringer Leistung verwenlen Flaschenzuges das mit dem Rohrkrümmer ver- det werden kann, da beim Heben des Saugrohres die bundene Rohrteil und am Seil des dritten· Flaschen- Energie, die für das Heben des Rohrkrümmers erzuges das den Saugkopf tragende Rohrteil aufge- forderlich ist, zunächst dem zum Heben des vorderen hängt ist. 15 Rohrteils dienenden hydraulischen Antrieb zugeführtThe invention relates to a suction excavator, the drive of which is associated with the hydraulic suction pipe assigned to the front pipe part from two articulated interconnected lik pump connects when the elbow at. There is pipe parts in which its lowest position ervorderen at the free end of the lowering of the suction pipe Pipe part of the suction head is arranged and has enough. This ensures that the suction pipe the free end of the rear tube part articulated with 5 its stretched during the raising and lowering a pipe bend is connected, which in a lowered position without the assistance of the excavator operator toirechten independently Retains leadership on the side of the dredger and operational disruptions due to the leadership and is guided so that it can be lowered, and there is no need to worry about lifting or lowering the ropes. Another Lowering the suction pipe is three hydraulically operated advantage of the suction dredger according to the invention Pulley blocks are used where the rope of the first io is that for driving the hydraulic pumps Pulley of the pipe bend, on the rope of the two-engine with relatively low power Verwenlen Block and tackle that can be used with the pipe bend, because when the suction pipe is lifted the tied pipe part and on the rope of the third bottle energy, which is necessary for lifting the pipe elbow the pipe part carrying the suction head is required, first of all the pipe part for lifting the front one depends is. 15 pipe part serving hydraulic drive supplied

Bei Saugbaggern dieser Art ist es bekannt, die wird, der zur Beibehaltung einer gestreckten Lage Flaschenzüge über Seiltrommeln zu betätigen und die des Saugrohres so lange mit doppelter Geschwindigzum Heben und Senken des den Saugkopf tragenden keit angetrieben werden muß und daher einen erhöhvorderen Rohrteils dienende Seiltrommel als Stufen- ten Energieaufwand erfordert, bis das Saugrohr eine trommel mit zwei verschiedenen Durchmessern so 20 im wesentlichen horizontale Lage erreicht hat und auszubilden, daß beim Absenken des Saugrohres das auch das Heben des Rohrkrümmers beginnt.
Seil zunächst von der Trommel geringeren Durch- Bei einer zweckmäßigen Ausführungsform der Ermessers abläuft, um von einem bestimmten Zeitpunkt findung sind die hydraulischen Antriebe als hydrauan, nachdem der Rohrkrümmer seine unterste Stelle lische Zylinder ausgebildet. Die hydraulischen Anerreicht hat, von der Trommel größeren Durchmes- 25 triebe können jedoch auch als Spindelantriebe aussers abzulaufen, damit das Saugrohr beim weiteren gebildet sein, die mittels hydraulischer Motoren an-Absenken seine gestreckte Lage im wesentlichen bei- getrieben werden.In suction dredgers of this type it is known that the pulley blocks must be operated via cable drums to maintain a stretched position and that of the suction pipe must be driven so long at twice the speed to raise and lower the suction head supporting speed and therefore a cable drum serving as a raised front pipe section Staged energy expenditure is required until the suction pipe has reached a drum with two different diameters so that it is in an essentially horizontal position and so that when the suction pipe is lowered, the elbow also begins to lift.
Rope initially from the drum smaller diameter. In an expedient embodiment of the Ermessers expires to find from a certain point in time, the hydraulic drives are designed as hydrauan, after the pipe bend its lowest point is formed cylinder. The hydraulic drive has achieved that larger diameter drives from the drum can also run as spindle drives, so that the suction pipe can be formed during the next step, which is essentially driven towards its extended position by means of hydraulic motors.

behält, also unzulässig starke Abknickungen in den In der Zeichnung sind Ausführungsbeispiele desretains, so inadmissibly strong kinks in the In the drawing are exemplary embodiments of the

Gelenken des Saugrohres vermieden werden. Die Gegenstandes der Erfindung schematisch dargestellt,Joints of the suction pipe are avoided. The subject matter of the invention shown schematically,

Verwendung einer Stufentrommel ist jedoch insofern 30 und zwar zeigtUse of a stepped drum, however, is insofar as 30 and that shows

nachteilig, als bei einer solchen Trommel zur Über- Fig. 1 das Saugrohr eines Saugbaggers nach der leitung des Seiles von der Trommel geringeren Durch- Erfindung in zwei verschiedenen Stellungen in Seitenmessers auf die Trommel größeren Durchmessers eine ansieht,disadvantageous than in such a drum for over- Fig. 1 the suction pipe of a suction dredger after conduction of the rope from the drum smaller diameter invention in two different positions in side knife one looks at the drum of larger diameter,

schneckenartige Führung erforderlich ist, durch die F i g. 2 den Hebebock zum Heben und Senken deshelical guidance is required, through the F i g. 2 the jack for raising and lowering the

ein gleichmäßiger Ablauf bzw. ein gleichmäßiges 35 den Saugkopf tragenden vorderen Rohrteils des Saug-a steady flow or a steady 35 front pipe part of the suction head carrying the suction head

Aufwickeln des Seiles nicht gewährleistet ist. Es be- rohres,Winding up of the rope is not guaranteed. It bears away

steht sogar die Gefahr, daß das Seil aus der F i g. 3 den Hebebock zum Heben und Senken desthere is even a risk that the rope from FIG. 3 the jack for raising and lowering the

schneckenartigen Führung herausspringt und dadurch hinteren Rohrteils des Saugrohres,snail-like guide pops out and thereby rear pipe part of the suction pipe,

Betriebsstörungen verursacht werden. F i g. 4 den Hebebock zum Heben und Senken desMalfunctions are caused. F i g. 4 the jack for raising and lowering the

Bei Saugbaggern der genannten Art ist es zwar 40 Rohrkrümmers des Saugrohres,In suction excavators of the type mentioned, there is 40 pipe bends of the suction pipe,

auch bereits bekannt, zur Betätigung der zum Heben F i g. 5 das Schaltschema für das Hydrauliksystemalso already known to actuate the lifting F i g. 5 the circuit diagram for the hydraulic system

und Senken des Saugrohres dienenden Seile Seiltrom- des Saugbaggers undand lowering of the suction pipe serving ropes Seiltrom- the suction dredger and

mein mit gleichbleibendem Durchmesser zu verwen- F i g. 6 einen hydraulischen Antrieb zum Heben den und die Trommeln zur Beibehaltung einer im und Senken des Saugrohres nach einem abgewandelwesentlichen gestreckten Lage des Saugrohres wäh- 45 ten Ausführungsbeispiel.mine with a constant diameter to be used F i g. 6 a hydraulic drive for lifting the and the drums to maintain an in and lowering of the suction pipe after a modified essential stretched position of the suction pipe selected 45 th embodiment.

rend des Hebens und Senkens mit unterschiedlicher Das Saugrohr des Saugbaggers besteht aus einemrend of lifting and lowering with different The suction pipe of the suction dredger consists of one

Geschwindigkeit anzutreiben. Dies erfordert jedoch den Saugkopf 1 tragenden vorderen Rohrteil 2, einemDrive speed. However, this requires the suction head 1 supporting front pipe part 2, a

den Einbau von Schaltgetrieben, deren Bedienung die hinteren Rohrteil 3 und einem Rohrkrümmer 4, derthe installation of manual transmissions, the operation of which the rear pipe part 3 and a pipe elbow 4, the

volle Aufmerksamkeit des Baggerführers in Anspruch in einer senkrechten Führung 7 an der Bordwand desThe excavator operator's full attention is required in a vertical guide 7 on the side of the

nimmt. 50 Baggerschiffes heb- und senkbar geführt ist. Das vor-takes. 50 dredger can be raised and lowered. The previous

Die Erfindung bezweckt, die angeführten Nachteile dere Rohrteil 2 ist um eine waagerechte Achse 5 beder bekannten Saugbagger zu vermeiden, und besteht weglich mit dem hinteren Rohrteil 3 verbunden. Diedarin, daß die Flaschenzüge in an sich bekannter ses Rohrteil 3 ist seinerseits um eine zur Längsachse Weise wenigstens annähernd im gleichen Abstand des Saugrohres und zur Achse S senkrecht:verlauvoneinander angeordnet sind und daß das Hydraulik- 55 fende Achse 6 beweglich mit ,dem Rohrkrümmer 4 system der zum Heben und Senken des Rohrkrüm- verbunden. Die Rohrteile 2, 3 und der Rohrkrümmers und der Rohrteile des Saugrohres dienenden mer4 sind an den Seilen 8, 9,10 von Flaschenzügen hydraulischen Antriebe drei von einem gemeinsamen 16, 24, 28 aufgehängt.The aim of the invention is to address the disadvantages mentioned of the pipe part 2 is about a horizontal axis 5 beder to avoid known suction excavators, and is movably connected to the rear pipe part 3. In that, that the pulley blocks in per se known ses pipe part 3 is in turn about a to the longitudinal axis Way at least approximately at the same distance from the suction pipe and perpendicular to the axis S: run from one another are arranged and that the hydraulic axis 6 is movable with the pipe elbow 4 system connected to raising and lowering the pipe elbow. The pipe parts 2, 3 and the pipe elbow and the pipe parts of the suction pipe serving mer4 are on the ropes 8, 9,10 of pulley blocks hydraulic drives three suspended from a common 16, 24, 28.

Motor angetriebene Hydraulikpumpen aufweist, von Das Seil 8 des dem Rohrteil 3 des Saugrohres ziidenen jede einem Antrieb zugeordnet ist, daß ferner 60 geordneten Flaschenzuges 16 ist über eine Rolle 11 in den zu den Antrieben führenden Druckleitungen eines Auslegers 12 und eine weitere Rolle 13, die fest der Hydraulikpumpen einfache Umsteuerventile an- an einer Stütze 14 befestigt ist, zu den Flaschengeordnet sind, die von einem gemeinsamen Betäti- blocken 15,17 des Flaschenzuges 16 geführt, von gungshebel betätigt werden, und daß in der Druck- denen der untere Flaschenblock 17 mit dem Kolben leitung der dem Antrieb des Rohrkrümmers zugeord- 65 eines hydraulischen Zylinders 18 fest, verbunden ist. neten Hydraulikpumpe noch ein Umschaltventil.an- Jeder Flaschenblock 15 bzw. 17 ist mit 4Rollen vergeordnet ist, welches selbsttätig umgeschaltet wird sehen, so daß der Flaschenzug 16 achtfach geflascht und die Druckleitung an die Druckleitung der dem ist. Die F i g. 2 zeigt den Ausleger 12 in ausge-Has engine-driven hydraulic pumps, from the cable 8 of the pipe part 3 of the suction pipe ziidenen each is assigned to a drive that furthermore 60 is an orderly block and tackle 16 via a roller 11 in the pressure lines leading to the drives of a boom 12 and another roller 13, which is fixed of the hydraulic pumps, simple reversing valves are attached to a support 14, to which bottles are arranged, which are guided by a common actuating block 15, 17 of the pulley block 16 from transmission lever are operated, and that in the pressure those the lower bottle block 17 with the piston line assigned to the drive of the pipe bend 65 of a hydraulic cylinder 18 is firmly connected. Neten hydraulic pump still has a switching valve. Each bottle block 15 or 17 is arranged with 4 rollers is to see which is automatically switched, so that the pulley 16 braided eightfold and the pressure line to the pressure line of the dem is. The F i g. 2 shows the boom 12 in an

Claims

3 43 4

pivoted position and the front pipe part 2 is to be in, the three hydraulic pumps 40 work, raised position. To put down the suction pipe 41, 42 via the reversing valves 45, 48, 49 in the same way the deck 19 of the dredger is exposed to the hydraulic cylinders 18, 26, 30, woleger 12 in the dash-dotted lines the pistons of the hydraulic cylinders in glide Position 12 α raised and raised in not drawn 5 rather way. When the pipe bend Way noted. In known 4, the roller 13 is used when it has reached its lowest position ter way to do this, when lowering the rope 8, a lowering through a switch-over sinking, not shown in detail of the boom 12 to effect. In the same device a switch valve 63 in the Drucklei manner how the rope 8 is according to FIG. 3 the cable 9 of the device 46 switched so that the pressure line io 46 assigned to the rear pipe part 3 of the suction pipe now via a pressure line 64 and via the Pulley 24 via a roller 20 of a boom reversing valve 49 with the hydraulic cylinder 21 and connected via an 18 fixedly arranged on a support, further to the reversing valve 45 Roller 22 to the upper bottle blocks 23, is locked against. As a result, the hydraulic 25 of the pulley 24 out of which the cylinder 30 is shut down, while on the other hand in the lower bottle block 25 also with the piston 15 hydraulic cylinder 18 about twice the amount a hydraulic cylinder 26 is firmly connected. of hydraulic fluid enters, i.e. the rope 8 with double

As shown in FIG. As can be seen from Fig. 4, the rope 10 is driven by the pelter speed. At the

The processes are carried out in the hoist of the suction pipe

similar to the bottle blocks 27, 29 of the in reverse order.

Pulley 28 out and also the lower bottle 20 The control levers 66, 67, 68 of the reversing valves 48, rule block 29 with the piston of a hydraulic 45, 49 are via a detachable linkage with a Cylinder 30 firmly connected. At 31 in FIG. 4 an operating lever 65 connected through which the Um-gate frame denotes, which is switched on and off together to accommodate the control valve Raising and lowering the suction pipe the pipe ends. By loosening the linkage, the control manifold 4 can be used to guide the slide. 25 levers 66, 67, 68 of the reversing valves, however, also from

The movable bottle blocks 17, 25, 29 which are separated from the common actuating lever 65

Pulley blocks 16, 24, 28 can be one or both sides, so that each hydraulic cylinder 18, 26 or

be provided with guide rollers, which in turn can be operated 30 for itself. The feeler roller 32

each run in a guide frame. acts on a tax not shown in detail

As a result, the bottle blocks 17, 25, 29 30 device, which in turn controls the operating lever 65 so

flawlessly managed. The hydraulic cylinder 18, controls that an even tension in the side

26, 30 are each maintained with their respective be 8, 9,10,

Removable bottle block 17, 25 or 29 facing away instead of the hydraulic cylinder 18, 26, 30

The end at a point 69 on the deck 19 of the excavator can be used to operate the pulley blocks 17, 25, 29

ship stored; this results in a very special 35 spindle drives are also used, of which

multiple arrangement of the pulley blocks 16, 24, 28 and each driven by means of a hydraulic motor

of hydraulic cylinders 18, 26, 30, as this is being done before, the hydraulic motors in principle

directions each between a fixed in the same way as the hydraulic cylinders 18, 26,

Bottle blocks 15, 23 or 27 and a point 69 30 are switched on in the hydraulic system,

are excited. It is advisable to use the 4 ° pulley blocks.

16, 24, 28 to be provided with limit switches, which is shown in FIG. 6 shown. Here is the spindle

Reaching the two end positions of the pulley blocks that of the spindle drive, for example with the movable one

Put the system out of operation. Bottle block 17 of the pulley 16 connected.

According to FIG. 2 lies on the rope 8 of the front part of the drive tube which cooperates with the spindle 70 2 associated pulley block 16 a feeler 45 nut 71 of the spindle drive is connected to the roll 32, which is attached to a screw 72 meshing with a drive nut that is pivotable about an axis 34 and gebaren Double lever 33 is mounted and by means of a gearbox from a hydraulic one driven on the double lever 33 acting pressure device motor 73 which is connected to the pressure lines 50, device 35 is connected under constant pressure against the rope 8 51 of the hydraulic system. We pressed will. 50 way of the spindle drive is then with regard to

According to FIG. 5 shows the basic principle for controlling the hydraulic lifting and lowering of the suction pipe.

hydraulic system serving hydraulic cylinders 18, 26, 30 borrowed the same as when using hydraulic

three hydraulic pumps 40, 41, 42 on, which are of a lischen cylinder.

common motor 43 are driven. The when using hydraulic motors

Hydraulic pump 40 is via a pressure line 44 with 55 the circulating amount of pressure fluid is naturally

a reversing valve 48 is connected. To the same extent larger than when using hydraulic

Way, the hydraulic pumps 41 and 42 are about to see cylinders. However, there is the advantage

Pressure lines 46 and 47 with reversing valves 45 that can be used with low pressures, and 49 connected. Lead from reversing valve 49

two lines 50 and 51 to the hydraulic cylinder 18. In the same way lead from the reversing valves 48 and 45 lines 52, 53 and 54, 55 1. Suction excavator, whose suction pipe consists of two gezu the hydraulic cylinders 26 and 30. Furthermore, pipe parts connected to one another in an articulated manner of the reversing valves 45,48 and 49, where at the free end of the front Return lines 56, 57 and 58 are arranged over a collecting pipe 65 part of the suction head and the line 59 to the oil tank 60 of the hydraulic system. free end of the rear pipe part articulated with

When the intake manifold is connected from its position 61 on the one manifold that is in a

Deck 19 in position 62 according to FIG. 1 lowered vertical guide on the side of the bag

Gerschiffes is raised and lowered, with three to raise and lower the suction pipe hydraulically operated pulley blocks are used, in which the pipe bend on the rope of the first pulley block, the pipe part connected to the pipe bend and on the rope of the second pulley block the pipe part carrying the suction head is suspended on the rope of the third pulley block, thereby characterized in that the pulley blocks (16, 24, 28) in a manner known per se at least are arranged approximately at the same distance from each other and that the hydraulic system of for raising and lowering the pipe elbow (4) and the pipe parts (2, 3) of the suction pipe hydraulic drives three hydraulic pumps driven by a common motor (43) (40, 41, 42), each of which is assigned to a drive that is also in the to the Drives leading pressure lines (44, 46, 47) of the hydraulic pumps (40, 41, 42) simple reversing valves (48, 45, 49) are arranged, which are operated by a common operating lever (65) are, and that in the pressure line (46) assigned to the drive of the pipe elbow (4) Hydraulic pump (41) a switching valve (63) is also arranged, which switches over automatically and the pressure line (46) to the pressure line (47) of the drive of the front Hydraulic pump (42) assigned to the pipe part (2) connects when the pipe bend (4) is lowered the suction tube has reached its lowest position.

2. suction excavator according to claim 1, characterized in that the hydraulic drives as hydraulic cylinders (18,26,30) are formed.

3. suction excavator according to claim 1, characterized in that the hydraulic drives as Spindle drives are formed which are driven by hydraulic motors.

For this purpose 2 sheets of drawings