DE2029882C

DE2029882C - Actuating device for an excavator shovel, in particular a trench profile shovel

Info

Publication number: DE2029882C
Application number: DE19702029882
Authority: DE
Inventors: Josef 4470 Meppen Bomeke
Original assignee: O&K Orenstein and Koppel GmbH
Current assignee: CNH Industrial Baumaschinen GmbH
Filing date: 1970-06-18
Publication date: 1973-06-07

Description

zur Arbeitsrichtung erfolgt um eine in Längsrichtung des Baggers verlaufende Achse. Das Schwenken der Baggerschaufel 2 erfoigt mittels hydraulischer Zylinder«, die Koioen 19 aufweisen. Diese erhalten Drucköl über ein Steuerventil 7, welches aus seiner Neutralstellung N verschoben wird, sobald die Baggerschaufel 2 und ein an dieser befe-Niigter SchwimmerkastenS aus der Horizontallage \erschober. werden. Da eine im Schwimmerkasten 8 orhandene ölfüllung stets eine horizontale Oberflache aufweist, verstellen sich Schwimmer 9 und beluiigen über einen üe verbindenden Hebel 10, der in einem Gelenk U drehbar gelagert ist, einen senkiecht an dem Hebel IO befestigten zweiten Hebel 12, der mit dem Schieber des Steuerventils 7 verbunden isi. Die Zylinderö sind (vgl. Fig. 2) über Leitungen 13 und 14 derart kreuzweise miteinanaer verbunden, üaß jeweils der stangenseitige Zylinderraum 6 a des einen Zylinders 6 an den kolbenseitigen Zylinder-1 aum 6 b des anderen Zylinders 6 angeschlossen ist, so daß Gleichlauf erfolgt. Mittels Leitungen 15 und 16 sind die Zylinder 6 an dem Steuerventil 7 angeschlossen. Eine Pumpe 17 des Hydraulikkreislaufes des Baggers ist über eine Leitung 18 mit dem Steuerventil 7 verbunden. Der Hydraulikkreislauf des Löf-to the working direction takes place around an axis running in the longitudinal direction of the excavator. The excavator shovel 2 is pivoted by means of hydraulic cylinders, which Koioen 19 have. These receive pressurized oil via a control valve 7, which is shifted from its neutral position N as soon as the excavator shovel 2 and a float box S fastened to it is pushed out of the horizontal position. will. Since an oil filling present in the float box 8 always has a horizontal surface, floats 9 are adjusted and via a connecting lever 10 which is rotatably mounted in a joint U, a second lever 12 attached perpendicularly to the lever IO, which is connected to the slide of the control valve 7 is connected. The cylinders are (see. Fig. 2) connected to each other crosswise via lines 13 and 14, so that the rod-side cylinder space 6 a of one cylinder 6 is connected to the piston-side cylinder 1 aum 6 b of the other cylinder 6 so that synchronism he follows. The cylinders 6 are connected to the control valve 7 by means of lines 15 and 16. A pump 17 of the hydraulic circuit of the excavator is connected to the control valve 7 via a line 18. The hydraulic circuit of the

elbäggers ist in F i g. 2 durch die schwach geze.chne-elbäggers is shown in FIG. 2 by the weak geze.chne-

n Unien angedeutet. Es ist ein ^^"der _d n Unien indicated. It is a ^^ "the _d

ein zu dessen Betätigung dienender Steuersch.u)era control switch which is used to actuate it

S!f Arbeitsweise ist wie folgt: Sobald die B-y_: schaufel 2 infolge Schrägsiellung des Baggers bei : denunebcnheiten aus ihrer Honzontallage:abw„. »dangt das Steuerventil7 aus der in Fig.2 gezc;, NeutralstellunR/V in die Stellung I oder·ΙΙ. woe,; von der Pumpe 17 Drucköl in die Zylinder 6 gd, so daß durch diese die Baggerschaufel 2 um ·■ Schwenkachs,- verstellt wird. Dieser Vorgang lj, >o lange, bis die Bac_Perschaufel2 wieder in der 1·, zontallage ist und damit das Steuerventil 7 wied, seine Neutraisteilung :V verschoben ist.S! F mode of operation is as follows: As soon as the by _: shovel 2 as a result of the sloping of the excavator in the case of irregularities from its horizontal position: deviating. The control valve 7 moves from the position shown in FIG. 2, neutral position R / V to position I or · ΙΙ. woe ,; 17 gd pressure oil from the pump into the cylinder 6, so that by this the bucket 2 to · Schwenkachs ■ - is adjusted. This process lj,> o long until the Bac _P scoop 2 is back in the 1 · zontallage and thus the control valve 7 again, its neutral division: V is shifted.

Anstatt den Schwimmerkasten 8 fest an der ί ßcrschaufel 2 anzubringen, kann der Schwimm:- Men 8 auch um eine Achse 20 an der Baggers, r, fei 2 gelagert sein, so daß auch schrägliegenüc · eher, nivelliert wt-rücn kömien. ic nach gcwur,:,.-; Winkellage de: Baggerschaufel 2 w.rd Schvvimnu-rka,!cn8 nach erfolgter Wmkeldrc... wieder gegenüber der Baggerschaufel 2 festgestelli.Instead of attaching the float box 8 firmly to the ί ßcrschaufel 2, the float can: - Men 8 also around an axis 20 on the excavator, r, be mounted free of 2, so that there is also an inclined position. rather, leveled wt-back kömien. ic after gcwur,:, .-; Angular position de: excavator bucket 2 w.rd Schvvimnu-rka,! Cn8 after Wmkeldrc ... again opposite the excavator shovel 2 fixed.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

JL a new section of the trench is to be started because the claims: excavator operator must first unlock the shovel, then insert it into the already drawn trench;

1. Actuating device for an excavator must be inserted and locked again and r, i shovel, in particular trench profile shovel, which can then dig the new trench section, h. ·, I ₁

in order to run horizontally in the working direction, it is also possible to loosen and add the pendulum lock,: -

fende axle and stored on both sides of the th, until the trench profile blade is through.,,

Axis arranged double-acting hydraulic gravity in the horizontal position.;,. ;;

shear cylinder swiveling and in a horizontal hat. If with particularly sticky, loamy η can be adjusted at the bottom, which means that it is marked on the shovel after emptying! - :;

shows that at the excavator shovel (2) one end of the shovel is still hardening material, ergioi s:

Float box (8) with two floats (9) a deviation from the level foot:,.:.

is arranged by a centrally mounted development of the shovel.

Lever (10) are connected to one another, on which the invention is based on the object, c
a second lever (12) is attached to the 15 actuating device of the aforementioned

One of the slides on the excavator shovel (2) must be designed in such a way that the hydraulic,

closed control valve (7) is connected, the cylinder takes place automatically.

when the excavator shovel (2) deviates from the This object is achieved according to the invention in that: the horizontal position with respect to the slide is that at de; Excavator bucket a float:!, Is moved away and the hydraulic cylinder 20 is arranged most with two floats, the dur. (6). the piston chambers (6 a, 6 b) of which are connected to one another via lines via a centrally mounted lever
(13, 14) are connected crosswise, are provided on the on which a second lever is fastened, the w pressure medium circuit connects, wherein the hy- the slide one on the Baggerschaufei in. ·: Are subjected uraulischen cylinder (6) so closed Control valve is connected, which at: - That the excavator shovel (2) is _{pivoted back into the horizontal a 5} deviation of the excavator shovel from the horizontal position. Position relative to the slide is moved and A <-x, - .. 2. Actuating device according to claim 1, the hydraulic cylinders, the piston chambers of which are characterized in that the float lines are cross-connected to the pressure stcn ( 8) connects to the excavator shovel (2) around an axis (20) parallel to the hydraulic axis (20) 30 cylinders are loaded in such a way that the excavator can be pivoted and swiveled back into the horizontal position in any pivoting shovel. will.

The advantages achieved by the invention exist

in that, regardless of the operator, one

35 frictional, automatic adjustment of the excavator shovel takes place in that the hydraulic circuit used to move the bag-The invention relates to an actuation device-gerschaufel, dei Hing for an excavator shovel, in particular ditch- is constantly under pressure, in a branch via profile shovel, which is around a in the working direction, the control slide is mounted on the axis running zontally for the horizontal adjustment and is fed by means of both cylinders. As a result, the double-acting hydraulic cylinder arranged on the side of the axis takes place. The automatic adjustment of the excavator shovel hydraulic cylinder is pivotable and adjustable in a horizontal position during the work process, there is no work zone. interruption on. Since the liquid level in the case of a known excavator, the excavator float cannot be influenced from the outside, e.g. B. The bucket is swiveled around the horizontal axis by one-sided loading of the excavator bucket, the excavator bucket is always guaranteed, even if the excavator has an exact, level setting for longer periods of time, even at an angle to a horizontal surface to be leveled.
sees to adjust force-fit horizontally. In a further development of the invention, the layer is characterized in that the operator actuates the float box on the excavator shovel so that it can pivot about an axis parallel to the hydraulic axis on both sides of the axis. Every time the excavator used for the pia- gert and can be locked in any pivoting position is not in the horizontal plane. B. if it partially sinks, the direction according to the invention must be set horizontally again in the drawing excavator bucket. and is described below. This is cumbersome and unsafe as during the 55 shows

Work usually does not leave enough time, the con- fig. I a schematic representation of a with

troll the subgrade often enough. He- a trench profile provided with a float box-

■ but if a measurement follows, this requires every blade and

^s times a special investment of time. Fig. 2 is a schematic production of the hy-

It is also known to have a trench profile bucket 60 of the actuating device and hydraulic circuit

by releasing a pendulum lock on an already ni- a backhoe.

\ ellised starting profile of a trench. On the dipper stick 1 of a spoon (not shown)

The shovel is then opposite its excavator, as shown in Fig. 1, a trench

'läni.'U !:' fixed by actuating the pendulum lock. Profile bucket formed excavator bucket 2 on one

ί is η h these preparations a new 65 Traverse3 can be hinged. The Traverse3 and thus the

¹ 'abe: -ck to be pulled that are at the level of the excavator bucket 2 opposite the dipper stick Ϊ

Ausgap: rofils lies. In such a mode of operation, around a joint 4 arranged transversely to the excavator

kick ju '. - - ■ iil a work break. if pivotable. Swinging the excavator bucket 2