DE1481066A1 - Front loader - Google Patents

Description

Dlpl.-Ing. W. Herrmann-Trentepohl PATENT LAWYERS

SOON ¥ HT-lIMA »HÄmiLa? 0U CORPORATION, Philadelphia National Bank Building, Philadelphia, Pennsylvania USA

"! Front loader"

The invention, "relates to a! Front loader and is aimed in particular at a front loader that is either on wheels or on a tracked vehicle can be mounted and with a drive device for in a horizontal * direction forward digging on the bottom using a single Power source for lifting the excavation shovel into the maximum height is used.

In the known! Front loaders, the open front Mskuks ^ hauifl is usually naoh vorae in KShe der Bo # * nebo ^ p "fe ^ ig ^, by m & ji jlas. ^ Ate od" r äaa I ^ ttemfis ^^ yl "elb" -! You were moved,

and in some cases where the bucket can be moved forward by separate drive devices, the door constructions require several work processes and the use of various drive devices to raise the bucket to the maximum height.

It has now been found that a front loader with an inner boom and an outer boom can be mounted on a vehicle in a pocket knife-like arrangement and drive devices can be provided, the actuation of the drive devices both. a forward horizontal G-rab stroke of the excavation shovel and, at the same time, a rapid lifting of the shovel to its maximum height using a single drive cylinder. This is done by using two driveB-cylinders, which are controlled together for operation, and the horizontal one that is directed forwards. Deliver G-rab movement, while the drive devices are required to swivel the shovel quickly to the maximum height *

iJi.ne main task jäe * - the rcrgendeM Srf inüimg is always the creation of eic.es econfcladtrs, which is either on a single wheel set or «ine *» K

909806/0636 BAD original

is mounted -and an inner and outer arm having in pocket knife-like assignment, wherein Drive devices for moving an excavation shovel in a forward-facing horizontal G-rabriohtung without moving the loader and at the same time Allowing the shovel to be raised quickly in |

the maximum height are provided in a single operation. Another object of the invention consists in the creation of a hydraulic control circuit in such a construction, in which the Pressure medium outlet from one drive cylinder to the inlet side of a second hydraulic one Cylinder arrives, whereby the piston rods of the cylinder are moved together and at the same time and thus cause a horizontal orb movement directed forward on the ground plane. The '

The invention also provides for such a construction Means before through which one of the drive cylinders to raise the shovel up to the maximum Height can be operated. Also in this structure is a further embodiment of the invention Parallel arrangement of the outer boom with a rigid pulling member is provided, both parts being mounted on an inner arm »the an its lower end swivels on the frame of the

V- .909806 / 0638 _ ^

Machine chassis is anchored while excavating; bucket is mounted on the outer boom. Furthermore, a vehicle is created by the invention, "in which the inner and outer booms are actuated by hydraulic cylinders", which are mutually exclusive are assigned in such a way that a controlled and simultaneous piston rod movement when the internal Outward arm unAiSeläßhwenken the outer Boom away from the inner boom, a horizontal movement of the lower end of the outer boom causes where the heap is attached, and a Lifting under the 0-ruii.d down through a after forward tilting of the inner boom enables »

The invention will be explained in more detail below with reference to the drawings w.

The drawings show in

Figure 1 is a perspective «view of a wheeled vehicle or tractor, which with of the inventions anordmmic equipped iatf

FIG. 2A shows a side view of the arrangement xiaeh Figure 1, free represents the Auahubsokaufel in the highest

809 80 6/0636

BATH O.

Position is raised}. ,

Figure 2 B a rope of the construction naoh Figure 2 A for the reproduction of the lowered! in Burial shovel;

Figure 3 is a schematic .Ansicht for reproduction of the hydraulic control system for the separate and optional as well as simultaneous and uniform actuation of the drive cylinders;

FIG. 4 A shows a side view of the construction according to FIG. 2A with the shovel raised, wherein however, the arrangement is based on a slewing ring construction «Ineö main vehicles is mounted ι and in

FIG. 4 B "a section from the construction according to FIG. 4 A with a lowered arrangement in FIG death.

In FIGS. 1j 2 A and 2 B, 1o denotes a

a siraurifear ed * i? derglelclien. At the 3! R & g kpzu | Qleu. 11 - | tff, YOS & 4XJ9H. Afcd · the blissful ride

-6-

the inner cantilever members 12 are pivotably attached. The inner boom members are interconnected at their tops by a pivot 13 tied together. The two pivotable members 12 form a forward tiltable carrier, which later should always be referred to as the inner boom.

By two spaced apart, by a pivot 15 with the inner boom members 12 Links connected at a point below the upper pivot 13 become an outer boom 14 educated. The outer arm 14 is with a rigid tension member or link 16 is provided, which is also pivotable on the upper part of the inner The boom 12 is supported by the pivot 13. At the bottom end of the handlebar 16 is a inverted U-shaped connector 17 »that goes through a Pin 18 rotatable on a pair of angle handles 19 is mounted

A usual, forward-opening excavation shovel el is on the lower end of the extension * members 14 mounted, with the blade fluctuating on dsE Arm 21 is mounted, the duroh. the pivot 22 is mounted on the outer arm 14.

9ÖS8QS / 083S

Di © i @ Muf © ligt BlQlß. tomii · ± »β

Srageitiriehwigj ieispif5.pw # ige the pivot arm 2J and irfiglgBker 24 store tt $ Ä lietagen.

To letStigmgizirlimdei? 25 iüt on the angle. '

love 19 drffelap ^ gelSLggtt imöfter piston 26 represents to Amii3.mfef§to »iiffl \ lus Auslie / ben, iioch? -

and Hs ^ Witfyärilaken ^ as in the Zeichenmingen f

_fl ti ». Since this i ^ fiitryLktion actually works. igt, © ^ liferigt ii @ b 'ei »© näl

im Ä.'bstgnd ^ if © O3? an # tie iZgrliiiier 27 gind J

at the arrow? 28

d @ r gfli ^ de.r are attached to the Dreli cones 15 dey duroh. dij? -in | ie.reft interpreting member? 12th

1481086

5o takes up within the console 29 a. For better Identification, the hydraulic cylinder 3o will be referred to in the future as a digging cylinder, while the "two Cylinder 27 should be called lifting cylinder. «The basket of cylinder 3o is on a drainage ring 31 attached, which is in engagement with the pivot pin 32, which through the links H of the outer boom runs.

The hydraulic control enables the actuation of the lifting cylinder and the digging cylinder xm dependent on each other and together, where the arrangement is made so that for a horizontal GraTafcewegung, as it is indicated in Figure 2 B, "both cylinders can be operated together", that the actuating levers "move outwards" together, causing the grahTsewegmiig shown in FIG alone, press * to generate the rapid vertical movement in the maximum lifting position according to Üigur 2 A.

Any hydraulic control device can be used

9 809808/0636

ORIGINAL INSPECTED

use. When given in Figure 3 again In a schematic view, the lifting cylinder 27 is provided with hydraulic fluid connections at both ends Mistake. Similar connections are shown for the double-acting digging cylinder 3o. The valve body 33 according to FIG. 3 has lines for a valve slide 34 in one Recognize your recess and a valve spool 35 in a similar other control recess. Actuating levers 36 and 37 are provided for 'separate movement of the slides, while a member 38 allows the levers 36 and 37 to be operated simultaneously and together. The pressure medium is supplied by the pump 39 and the relaxed pressure medium kicks in

into a storage container Ao . Since the valve A

device as such belongs to the state of the art, no further explanation is required.

The use of the valve is important for the separate actuation of the lift cylinder and the Digging cylinder, while at the same time the two cylinders also share the same movement can be operated by allowing the pressure medium to flow in height so that the outlet

909806/06 36 -1-

-1ο-

from the lifting cylinder to the inlet side of the digging cylinder got. While the pistons of the two cylinders move together, one occurs corresponding digging movement, as shown in Figure 2B is indicated, the force of the two cylinders 27 and 3o being used. About that As indicated above, Mnaus enables control the use of the rotatably mounted single cylinder 3o to turn the outer boom into one single work process in its maximum lifting position to bring, as indicated in Figure 2A.

Mode of action:

Including during operation of the device according to Figures 1-3., The cylinder 27 and 3o are handled separately by the control device of Figure 3 ,, the excavating shovel 2o in the fully distinguished position of Figure 2 B to spend. In order to achieve a forward digging movement along the ground, the control 38 is moved outwards so that the hydraulic medium flows from the pump to the two cylinders in series, the pressure medium flowing through the lifting cylinder 37

9Ö 9 8 0 6/063 6 - ¹¹ ~

1481086

flows and the returning pressure medium from the piston rod end of the lifting cylinder; 27 is deflected to the Yerankerungsende of the digging cylinder 3ο, whereby the piston rods of both cylinders move simultaneously and together outward, and thereby the digging movement indicated by dashed lines in Figure 2B is achieved. The shovel can then be pivoted into an upright position by actuating the shovel cylinder 25, as shown in full extension in FIG. 2A, and this is done with the load in the shovel with the aid of the digging cylinder 3o. The shovel 2o can then be "as striated; _{Tilt f} with the aid of the cylinder 25 indicated in FIG. 2A.

In the way of working just described, one recognizes - | that both cylinder devices, namely 27 and 3g, can be used for digging, as can be seen from Figua * 2 B shows where the vehicle is stationary and a greater force to drive the shovel into the Brdreich is required, while for lifting only one of the two cylinder devices, näralieh 3o, is required, mm the rapid vertical To bring the material up to the top »

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1 * 81066

In Figures 4 A ″ and B correspond there re) en ropes essentially those that were used in connection with Figures .1, 2 A and 2 B "have been described, but here the overall arrangement is mounted on a turntable 41, the .-. again sitting on a caterpillar drive Weri: 42. Those shown in Figures 4A and 4B Parts are marked with the same reference numbers Adding the letter "" b "as in Figures 1, 2 A and 2 B designate · The operation of these parts is the same as that according to the Figures 1, 2 A and 2 B..

Of course, details of the subject matter of the invention can be found in the frame.,. of male ability.

- patent claims -

9098 06/06

Claims (7)

Pat ent ans ρ r ü c h e 1.! Front loader with a vehicle on which swiveling Boom pivotably attached to a shovel is ordered, g e k e η η ζ e i e h η e t d u r c h one on the vehicle (1o) pivotably mounted inner arm (12) and one at the upper end of the inner arm (1-2), the outer arm (14), which is pivotably mounted in the manner of a pocket knife at its lower end the excavation shovel (2o) which opens to the front carries; through on the vehicle (1o) mounted cylinders (27) for actuating the inner boom (12); through one on the inner boom (12) mounted cylinder (3ö) to operate the I. outer boom (14) »by a control device (33) for joint actuation of the Cylinder (27) (3o) with the horizontal Yorwärts-Grabbevregung the shovel (2o) and for the separated Actuation of only one cylinder for maximum lifting of the bucket (2o) 2. Front loader according to claim 1, d a d u r c h g ekennzeichne t that the cylinder (27.3o) 909806/0636 " ^H " -H- actuating pressure medium in series with the outlet of one cylinder (27) the inlet of the second cylinder (3o) feeds. 3. Front loader according to claim 1 and / or 2, characterized marked rejects that the inner (12) and from its (14) boom "actuating cylinder (27 or 3o) can be controlled by adjacent hand levers (36,37) in a hydraulic series circuit, in which the outlet from the first cylinder (27) feeds the input side of the second cylinder (3o) and thus a simultaneous and common piston rod movement in the cylinders to generate a essentially horizontal digging movement arises. 4. Front loader according to one or more of the preceding Claims, as identified by ζ calibrated, that at the upper end of the inner boom pivotably mounted at its lower end on the vehicle (1o) (12) a handlebar (16) parallel to the outer boom (14) is rotatably mounted on its the other end is connected to the outer arm (1.4) via an angle lever (19), which has a Cylinder (25) for tilting the shovel (2o) hinged to the lower end of the outer boom (14) wearing. 90980 6/0636 ~ ¹⁵ " 5. Front loader according to the preceding claims, marked by the fact that the parallel link (16) on the upper egg of the inner boom (12) above the G-elenkver- " bond between inner (12) and outer (14) Boom is hinged, ■ J 6. Front loader according to the preceding claims, characterized in that get e η η ζ e i c h η e t that the vehicle (io) a vehicle equipped with cadres is" 7. Front loader according to one or more of the claims 1 to 5, d a d u r c h g e k e η η 'z e i c h η e t, that the vehicle (io) is a tracked vehicle (42). 909806/063 a