DE1209342B - Haymaking machine - Google Patents

Description

GERMAN

PATENT OFFICE

EDITORIAL

German class: 45 c-79/00

Number: 1209 342

File number: M 55398 m / 45 c

Filing date: January 11, 1963

Opened on: January 20, 1966

The invention relates to a three-point suspension device by means of a three-point bracket Tractor-mountable haymaking machine with a transmission, on both sides of which transversely to Direction of travel a cross member is arranged on which about vertical axes revolving tine baskets are stored.

In the case of a tractor-drawn haymaking machine consisting of a main cross member The base unit and the cross member ίο hinged to it, it is known, the cross member swivel up. The pivoting cross member parts not only make a good adjustment the tine baskets on uneven ground at work, they also make it easier to reduce the machine width in the transport position when the outer cross member parts are approximately at right angles to the ground be superscripted. However, the tine baskets remaining in the middle section of the machine require lifting the machine so that the tines hit the ground in the transport position to prevent. If the machine is attached to a three-point hitch of a tractor, then this is possible the hydraulics allow sufficient lifting of the entire machine. However, it is undesirable to keep the hydraulics in the lift position during transport, even if you are in this transport position provides for special locking means in the hydraulics. It happens that the locking means cannot be activated by the driver, be it on purpose or out of forgetfulness. If the machine then crashes in the event of a hydraulic failure during transport, then it is Damage to the machine or even an accident result.

It is also already a tractor-drawn haymaking machine with a transmission to drive it known from zinc baskets, which are mounted on cross members hinged to the gearbox, which can swing around horizontal axes to adapt the machine to uneven floors. To reduce the working width of this machine, the cross beams are only swiveled backwards, so that it is necessary to achieve a certain ground clearance even with this version would be to lift the machine.

Another known haymaking machine is with two independently working transversely Equipped rake. Folding up this rake does not present any particular difficulties, because each rake has its own drive shaft in the direction of travel.

Haymaking machine

Applicant:

Maschinenfabrik Fahr AG,
Gottmadingen (district of Konstanz)

Named as inventor:

Michael Stampfer, Gottmadingen (district of Konstanz)

The present invention is based on the object of a to the three-point suspension of a To design the tractor-mountable tine basket haycher of the type mentioned above so that it is possible to bring the tine wrench into a transport position with sufficient ground clearance without it it is necessary to bring the hydraulics into the lift position during transport. This task is achieved according to the invention in that the cross member on the transmission housing by one approximately in the direction of travel horizontal axis can be pivoted and locked in the pivoted up position. By this measure allows all tine baskets to be in a transport position with sufficient ground clearance so that it is not necessary to use the hydraulic system to switch the tine basket during transport to raise. But there is another advantage that arises from the fact that when pivoting up the cross member in the in F i g. 2 position shown the joint transmitting the work force so strongly is adjusted so that the tine baskets can no longer rotate in the transport position. The tine baskets are therefore automatically secured against rotation in the transport position. This is a very big advantage because the raised tine baskets would be a major hazard if they were walking could.

In a further embodiment of the invention, the cross members are in the transport position at their free ends releasably connected to one another, expediently at the free end of a cross member Hook is articulated, one arranged at the free end of the other cross member Eyelet is assigned. In this way, the cross members can easily be secured in the swiveled up position and can be quickly lowered back into working position if necessary.

Another possibility for solving the problem is that one of the cross members is rigid and the other cross member around one in the direction of travel

509 779/102

lying axis is pivotably arranged on the gear housing and that both cross members are pivoted upwards Position can be determined. With this configuration, there is also sufficient ground clearance guaranteed, the transport width is somewhat larger, but requires the power drive in this version only a single joint, which means that manufacturing costs can be saved.

An advantageous embodiment is obtained when the three-point headstock is approximately in the direction of travel extending tube is provided in which a connected to the housing of the transmission hollow pin is rotatably mounted, which serves as a bearing for a drive shaft. This makes a particularly easy one Created construction that can be improved in that the hollow pin in the axial direction locked and lockable in the radial direction.

In the drawings the invention is in two exemplary embodiments illustrates, namely shows

F i g. 1 is a view of an embodiment of the tine basket hay seen in the direction of travel and in FIG Working position,

F i g. 2 the tine basket mower of FIG. 1 in transport position,

F i g. 3 shows a section along the line ΙΙΙ-ΙΠ of F i g. 1 and

F i g. 4 shows a horizontal section through the transmission of another embodiment of a tine basket hayman according to the invention.

The in the F i g. 1 to 3 illustrated tine basket rake is equipped with a transmission 1 on which transverse beam parts 2 and 3 extending transversely to the direction of travel are pivotable in the vertical plane are attached. The cross member parts 2 and 3 are equipped with hinge brackets 4, which are attached to the housing of the transmission 1 firmly connected booms 5 are articulated. Both cross member parts 2 and 3 are equipped with drive shafts 6 and 7, on which tine baskets 8 or 9 are arranged. The tine baskets 8 are about wheels 10, the distance of which from the associated cross member is invariable, and the Tine baskets 9 supported by wheels 11 with vertical suspension. The compliant support is shown in FIG. 3 shown on an enlarged scale. The wheel 11 is mounted at the end of a pivot arm 12, whose the other end is articulated via a link 13 to a sleeve rotatably mounted on the drive shaft 7 is. The wheel-side end of the swivel arm 12 is articulated to a sliding sleeve 15 via a link 14. The hub of the tine basket 9 rests on the sliding sleeve 15. If the wheel 11 hits an elevation, then the impeller 11 and thus the sleeve 15 and the tine basket 9 is raised and after overflowing the increase decreased again.

The housing of the transmission 1 is rigidly connected to a three-point block 16, which in a known manner via an upper handlebar 18 which can be changed in length by means of a spindle lock 17 and via two lower ones Handlebar 19 can be connected to a tractor. With the help of the spindle lock 17, the tine baskets Adjust so that the tine tip tracks incline forward in the direction of travel during work are. In order to be able to bring the tine basket into the transport position, the cross member parts 2 and 3 in the in F i g. 2 to pivot up position illustrated and in this position by means of a hook 20 and an eyelet 21 to be connected to one another. In this transport position the tine basket can be driven on the road with the hydraulics relieved.

If it is only desired, with a slightly larger transport width than the one described above To maintain sufficient ground clearance for the machine, for example when transporting it on dirt roads, is, according to a modified embodiment, to raise the tine baskets, as in FIG. 4 illustrates the gear housing 22 is provided with a hollow pin 23 over which a roughly in the direction of travel extending pipe 24 is pushed, which is firmly connected to a three-point bracket 25. By a bore in the hollow pin 23 is guided by a drive shaft 26 which is mounted in the hollow pin via ball bearings is stored. The hollow pin can be fixed radially in the tube 24 by means of a clamping device 27. The one transverse support part 28 is pivotably connected in the vertical plane to the housing 22, while the other transverse support part 29 is firmly connected to the housing 22 or is formed in one piece with it. In this embodiment, too, the transverse support parts 28 and 29 are approximately for the transport position pivoted up at right angles to each other and at their ends by means of a hook and a Eyelet connected to each other. During the transport position, the hollow pin 23 must face the pipe to be established.

In order to be able to relieve the hydraulic system during work, one of the two is on the gearbox 1 The nearest tine baskets are supported by the wheel 10, the distance from which is unchangeable from the cross member is.

Claims (6)

Patent claims: 1. Using a three-point bracket on the three-point suspension device haymaking machine attachable to a tractor with a gearbox on both sides at right angles to the direction of travel a cross member is arranged on each of which tine baskets revolving around approximately vertical axes are mounted, characterized in that, that the cross members (2, 3) on the transmission housing (1) by one approximately in the direction of travel horizontal axis can be pivoted and locked in the pivoted up position. 2. A haymaking machine according to claim 1, characterized in that the cross members (2, 3) are releasably connected to one another at their free ends in the transport position. 3. Haymaking machine according to claim 2, characterized in that at the free end of the one cross member, a hook (20) is articulated, one at the free end of the other cross member arranged eyelet (21) is assigned. 4. Using a three-point bracket on the three-point suspension device haymaking machine attachable to a tractor with a gearbox on both sides at right angles to the direction of travel a cross member is arranged on each of which tine baskets revolving around approximately vertical axes are mounted, characterized in that, that one cross member (29) is rigid and the other cross member (28) by one in the direction of travel lying axis is pivotably arranged on the gear housing (22) and that both cross members can be locked in the swiveled-up position. 5. Haymaking machine according to claim 4, characterized in that the three-point headstock (25) is provided with a tube (24) extending approximately in the direction of travel, in which a with the housing (22) of the transmission (1) connected hollow pin (23) is rotatably mounted, the a drive shaft (26) serves as a bearing. 6. Haymaking machine according to claim 5, characterized in that the hollow pin (23) is locked in the axial direction and lockable in the radial direction. Considered publications: German utility model No. 1829 226, 671, 1857283;
U.S. Patent No. 532079; Journal: »Technology and Agriculture«, issue 20 from October 25, 1961, p. 472. 1 sheet of drawings 509 779/102 1.66 © Bundesdruckerei Berlin