DE202009000022U1 - Attachment for agricultural vehicles - Google Patents

Abstract

Attachment for agricultural vehicles, in particular Hoftracs, wheel loaders or forklifts, wherein the attachment (1) can be raised or raised and tilted mounted on the vehicle, characterized in that the attachment (1) a chassis (4) with a telescopic frame (42) and at least one freewheeling wheel (44), wherein a receptacle (41) for the telescopic frame (42) on the attachment (1) is provided and the wheel (44) on the telescopic frame (42) under the attachment (1) is arranged.

Description

The The invention relates to an attachment for agricultural Vehicles, in particular Hoftracs, wheel loaders or forklifts, wherein the attachment can be raised or raised and tilted mounted on the vehicle is.

such Attachments for agricultural vehicles are known for different functions. Especially They are used for picking up straw, silage, etc. and are common additional functions, for example, to output the im Mounted equipment, for example litter, Food or the like on.

Exemplary is on the DE 100 57 101 C1 from which a device for picking up, transporting and distributing grit is known. Furthermore, scattering devices are for example from DE 198 02 427 A1 and the DE 197 45 441 A1 known.

Next is from the DE 40 14 283 A1 a designated as composting machine wheel loading machine with a transport bucket and in the transport bucket pivoting milling known. This milling device acts directly in the receptacle and transports the grit received therein via the receiving opening out of the receptacle.

Furthermore, the shows DE 196 16 659 A1 a spreader for distributing grit with a spreading plate, in which in each case a screw conveyor arrangement is provided in an embodiment with two scattering chambers. This is therefore a conveying device which serves a lateral promotion of the material to be spread in the axial direction of the screws.

The DE 34 08 055 C2 shows a spreader for attachment to the stern of tractors for spreading fertilizers. Accordingly, the driven by the tractor via a power take-off distribution device is a spreading plate for flat uniform distribution of the material to be spread. The junk storage container is at the same time designed as a shovel-like receptacle, wherein the entire arranged at the rear of the tractor device is designed to be pivotable.

Furthermore, from the DE 38 07 738 A1 a device for receiving, transporting, crushing and spreading of feed blocks known as an attachment for a tractor, in which a pivotable loading platform inviting a feed block into a container and there by means of laterally arranged on the container, obliquely upwardly and outwardly extending Fräskettenanordnung crushes the feed and laterally comprises applying.

In addition, from the US 4,621,776 a round bale handling device is known, are loaded with the heurundballen on a trailer and there is spent with a peeling device, the wound haylage side. This device requires a lot of space for the pivoting areas and also requires a considerable vehicle weight as a counterweight in round bale handling.

From Maschinenfabrik Weidemann GmbH & Co. KG, 34519 Diemelsee-Flechtdorf, DE is a round and square bale resolver as an attachment known for tractors, in which in a receptacle Straw bales over a horizontal conveyor one Scratching roller are fed, the bale dissolved and the straw is blown with a horizontal, fed in the direction of travel of the vehicle arranged rotational axis becomes. The straw is ejected laterally with the throwing fan.

From the EP 0 826 302 A1 is a lifting and pivoting work tool, which is preferably removably attachable to agricultural vehicles, known, which has a receptacle with receiving opening and discharge opening and a discharge device. In a pivoted discharge position, the discharge opening is arranged at the lowest position. The discharge device consists of a high-speed conveyor belt with which, depending on the direction of rotation of the conveyor belt, the spreading material can be dispensed over one or the other end of the conveyor belt.

adversely with these, usually with additional hydraulic drives Attached attachments is that they are a significant weight exhibit. Especially when using a material to be discharged loaded, they can easily weigh 1 to 1.5 t have. This extra weight, in front of the front of the relevant agricultural vehicle, for example a Hoftrac is placed on his swivel arm, generates one hand an unfavorable weight distribution affecting the driving behavior of the Tracs worsens and in particular the front axle Tracs significantly loaded and relieved the rear axle. there may occur axle loads, for example, the driving from slatted floors or other driveways.

task The invention is an attachment for agricultural To design vehicles in such a way that even when fully loaded one even load distribution on the ground allows.

This task is solved with an extension Device according to claim 1.

By the telescopic mounted on the attachment chassis can on the agricultural vehicle, such as Hoftrac, wheel loader or Forklift, attached attachment in addition to the landing gear is supported on the ground. The entire load of the attachment is thus not with its considerable Lever way alone on the front axle of the agricultural vehicle on, but is supported by the telescopic chassis added. Since the attachments, in particular the spreader, Feed distributors or fertilizer spreaders often too operated in elevated position, is the chassis to be provided with a telescopic frame. The at least one free-wheel on the chassis is based in operating position while on the ground. Accordingly, a part of the load of the attachment over this at least one wheel passed into the ground.

Prefers The chassis has two wheels that are coaxial with each other or stored on an axle. Two wheels spaced arranged on a common axis or coaxial with each other are, prevent an undesirable tilting moment about the longitudinal axis of the vehicle (direction of travel axis) when driving on bumps and / or uneven loading of the attachment.

If the wheel or wheels are self-steering, is the use of the attachment with supported on the ground Even when cornering possible without wheels the wheels above the ground are urged laterally erasing become. For self-steering of the wheels known Bearings are used where the wheel is around a vertical Axis is arranged freely pivotable through 360 °, wherein the Rotary axis of the wheel at an offset spaced from the vertical pivot axis is arranged.

Thereby, that between recording and telescopic frame a hydraulic cylinder is clamped, is a remotely operated adjustment of telescopic frame allows. The hydraulic cylinder at the same time allows the desired load absorption to the Front axle of the agricultural vehicle in the desired Way to relieve.

Thereby, that is a preferably electrically controllable 6/2-way hydraulic valve is provided on the attachment, which is a first position for Actuation of the telescopic landing gear and a second Position for operating the implement functions can, according to the position of the 6/2-way hydraulic valve either the actuator for the attachment or the hydraulic cylinder of the landing gear can be actuated. In this respect, can usual agricultural vehicles with a hydraulic control circuit for the inventive Attachment with landing gear can be used.

If in the hydraulic circuit between 6/2-way valve and hydraulic cylinder a pressure relief valve is provided, can be excessive Load absorption of the chassis and thus an undesirably high Axle load can be avoided. Especially on uneven terrain can be such a lifting the front axle of the agricultural vehicle and a load overrun be avoided.

alternative or in addition, the wheels can also have a suspension. In this case, bumps can be of the terrain are absorbed by the spring travel.

preferred Attachment to equip it with a telescopic landing gear is a litter or feed distributor.

following An embodiment of the invention with reference to the accompanying Drawing described in detail.

In this shows:

1 an attachment in partly cut side view, mounted on a light farm loader.

1 shows an attached as an attachment to a dashed illustrated Hofwerer H on a quick-change device S of the hydraulically liftable loading stand L mounted attachment 1 for picking up, transporting and distributing spreading material. The attachment 1 is shown in side view. The attachment 1 has a scoop-like receptacle 2 , which is shown cut, with a discharge device arranged underneath 3 on.

The receptacle 2 has an excavator bucket shape, wherein the receiving volume through a front substantially flat bottom plate 21 , a back wall 22 and two, the bottom plate 21 and back wall 22 connecting, approximately triangular shaped side walls 23 is formed. This form the bottom plate 21 , Rear wall 22 and sidewalls 23 a large receiving opening 24 , which serves to receive the scattering material to be distributed.

At the bottom of the container 2 on which the bottom plate 21 and the back wall 22 approach is a discharge opening 25 for dispensing the material to be spread out of the container 2 arranged. The discharge opening 25 has elongate opening cross-section, wherein the longitudinal axis of the opening parallel to baseplate 21 or rear wall 22 is arranged. The opening width is about 5 cm, with the opening extending over about the blade width.

Above the discharge opening 25 is a metering roller 26 with a clear distance of about 5 cm to the discharge opening 24 arranged. The metering roller 26 has radially outwardly pointing serrations 27 which are arranged in a helical line on the cylinder peripheral surface of the metering roller. Preferably, the prongs have a length of 5 cm. Above the metering roller 26 is a stirrer shaft 28 with from the stirrer shaft 28 radially protruding stirring elements 29 arranged. The stirring shaft 28 relaxes with its stirring elements 29 that in the receptacle 2 picked up grit by rotary drive of the stirring shaft.

Below the discharge opening 25 is as a discharge device 3 a promoter 31 arranged in the receptacle 2 taken gutter right or left of the track of the Hofladers H from a discharge opening 32 , depending on the direction of rotation of the conveyor 31 ejects.

At the bottom plate 21 of the receptacle 2 is a suspension 4 arranged. The chassis 4 has one on the bottom plate 21 of the receptacle 2 attached picture 41 in which a telescopic frame 42 is held back and forth along the arrow X direction. For adjustment of the telescopic frame 42 is a parallel to the telescopic X hinged hydraulic cylinder 43 intended. On the telescopic frame 42 are at the lower free end two coaxially arranged wheels 44 intended.

In the in 1 shown in a solid line Austragstellung A is the chassis 4 with its telescopic frame 42 shown in the extended position. The wheels are supported 44 of the landing gear 4 on the ground and divert a portion of the load of the attachment 1 in the ground.

If no critical floor loads are to be considered, the landing gear can 4 via hydraulic cylinders 43 be retracted, so that a free maneuvering with the Hoflader H is possible and also a tilting of the attachment 1 in the in 1 dot-dashed position (loading position B) is allowed.

The hydraulic auxiliary drives on the device 1 are supplied by the hydraulic circuit of the Hoflader via the existing hydraulic connection on the Hoflader H. The hydraulic drive of the metering roller 26 and the stirring shaft 28 as well as the hydraulic drive of the conveyor 31 are connected in series. Further, in this hydraulic circuit, a 6/2-way valve is provided with the optional between the drive of the metering roller 26 and stirrer shaft 28 on the one hand and the telescoping device (hydraulic cylinder 43 ) of the chassis 4 on the other hand can be switched.

The following is the operation of the mounted on a light Hoflader H device 1 described.

The device mounted on a Hoflader H 1 via the corresponding hydraulic devices on the loading linkage L of the Hofladers H in a forward pivoted receiving or loading position B, the 1 shown dashed, brought. By lowering the device 1 by means of load suspension L of the Hofladers H and forward drive of the Hofladers H in a heap heap takes the shovel-like receptacle 2 by means of its receiving opening spreading material.

By pivoting back the device 1 in its transport and discharge position A and possibly lifting the device 1 The amount of grit can be transported with the Hoflader H to the place of use in a cubicle.

If critical areas are now to be traveled with regard to the maximum axle load, for example slatted floors in cubicle sheds, the landing gear becomes 4 actuated by actuation of the electrically controllable 6/2-way valve and extended with the hydraulics of the Hofladers H. An excessive load absorption of the chassis 4 is prevented by a pressure relief valve in this hydraulic circuit.

Subsequently, the 6/2-way valve is returned to the operating position (second position), so that the metering roller 26 and stirrer shaft 28 hydraulically driven by the Hoflader H. It can now be the grit from the receptacle 2 on the discharge device 3 by means of conveyor 31 and ejection port 32 be carried out as desired. An overload of the slat bottom is made possible by the uniform weight distribution, namely relief of the front axle of the Hofladers H.

1

attachment

2

shovel-like receptacle

21

baseplate

22

rear wall

23

Side wall

25

discharge

26

metering

27

Pink

28

agitator shaft

29

stirrer

3

discharge

31

promoter

32

ejection port

4

landing gear

41

admission

42

telescoping frame

43

hydraulic cylinders

44

wheel

A

discharge position

B

loading position

H

hoflader

L

loading boom

S

Quick change device

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10057101 C1 [0003]
• - DE 19802427 A1 [0003]
• DE 19745441 A1 [0003]
• DE 4014283 A1 [0004]
• - DE 19616659 A1 [0005]
• - DE 3408055 C2 [0006]
• - DE 3807738 A1 [0007]
• US 4621776 [0008]
• EP 0826302 A1 [0010]

Claims (8)

Attachment for agricultural vehicles, in particular Hoftracs, wheel loaders or forklifts, the attachment ( 1 ) can be lifted or raised and tilted mounted on the vehicle, characterized in that the attachment ( 1 ) a chassis ( 4 ) with a telescopic frame ( 42 ) and at least one free-running wheel ( 44 ), wherein a receptacle ( 41 ) for the telescopic frame ( 42 ) on the attachment ( 1 ) and the wheel ( 44 ) on the telescopic frame ( 42 ) under the attachment ( 1 ) is arranged. An attachment according to claim 1, characterized in that the chassis ( 4 ) two wheels ( 44 ) which are coaxial with each other or mounted on an axle. An attachment according to claim 1 or 2, characterized in that the wheel or the wheels ( 44 ) are self-steering. An attachment according to claim 1, 2 or 3, characterized in that between receptacle ( 41 ) and telescopic frames ( 42 ) a hydraulic cylinder ( 43 ) is clamped. An implement according to claim 4, characterized in that a preferably electrically controllable 6/2-way hydraulic valve on the attachment ( 1 ) is provided, which has a first position for actuating the telescopic chassis ( 4 ) and a second position for actuating the functions of the implement ( 1 ) having. An attachment according to claim 5, characterized in that in the hydraulic circuit between 6/2-way valve and hydraulic cylinder ( 43 ) A pressure relief valve is provided. An attachment according to one of the preceding claims, characterized in that the wheel (s) ( 44 ) have a suspension. Attachment according to one of the preceding claims, characterized in that the attachment ( 1 ) is a spreader or a feed distributor.