DE2215552A1 - SHIFTING AND OVERRAPPING CLUTCH - Google Patents

Description

Machine factory Fahr Aktiengesellschaft Gottmadingen 7702 Gottmadingen

Changeover and overrunning clutch

The invention relates to a changeover and overrunning clutch, in particular for forage loading wagons.

Häcksel 1 adewagen are used in agriculture for the introduction of forage and to carry out the following operations: picking up the crop, chopping, loading it onto the transport wagon, transporting it and unload again without manual labor, whereby the forage loading wagon is pulled by a tractor and the individual units are driven at the same time.

The previously known chopping wagons each have a drive stub for the chopping and loading unit and for the emptying device. ZJfn Switching from chopping mode with loading The PTO shaft must be repositioned for emptying.

The invention is based on the object of a switchover and

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overtaking clutch, especially for chopping 1 ad wagon, which no longer requires repositioning the drive shaft and thus makes work easier for the farmer.

This object is achieved according to the invention by that on the EintriebswelIe of the chopper 1adewagens a from the tractor seat via a shift linkage operable switching clutch for optional drive of the chopping unit or the emptying device is arranged, the designed as a driver Recesses are arranged in a pulley or changeover clutch so that the clutch is also used in chopping mode Overrunning clutch is used. Preferably, the recesses are shaped so that the driving pins in one direction of rotation Take the pulley for the chopping drive with you while it is being used Formation of the overrunning clutch in the other direction of rotation oblique contact surfaces can slide out of the recesses.

Advantageous further developments of the invention emerge from the features of claims 3 and 4.

Below is the invention with reference to the drawing for example described in more detail. Show it:

-3 -3 0 9 8 A 0/0 2 1 3

1 shows the input shaft of a chopper wagon the changeover and overrunning clutch according to the invention partially in section with the actuating linkage;

Fig. 2 is a plan view of the input shaft and

Fig. 3 is a section through the coupling according to the Line III-III in Fig. 1.

An input shaft 3 is mounted on a chopper 1 adewagen by means of two straps 1 and a support tube 2 attached to it, the one at one end that can be operated from the tractor seat Has changeover and overrunning clutch 4, the input shaft 3 runs within the support tube 2.

The coupling is constructed as follows: On the input shaft 3, a drive plate 6 is attached via a feather key 5, which advantageously has three bores 7 for the sliding reception of driving pins 8. The latter have slots 9 on, in which a pressure ring 10 engages, which is of a conical spring

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11 is applied, which is supported on the drive plate 6, Via the conical spring 11 and the pressure ring 10, the driving pins 8 are mounted in recesses 12 on the support tube 2 Pulley 13 pressed. The recesses 12 are shaped so that the driver pins 8 in one direction of rotation the pulley 13 while they slide out of the recesses 12 in the other direction of rotation through inclined contact surfaces 14, see FIG can.

This position of the coupling is shown in Fig. 1 in the upper half of the section and is switched on for the chopping operation of the loading wagon.

For the emptying operation, an adjusting lever on the The carriage drawbar moves the shift rods 17 attached to it in the direction of the pulley 13 via a shift linkage 15 and a reversing lever 16 mounted between the support tube 2 and bracket 1. The shift rods 17 press on a thrust ring 18, the in turn, the release pin 19 moves, which is also in bores the pulley 13 are mounted and the other ends Touch pressure ring 10.

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During the switching process described above, the release bolts 19 pressed against the pressure ring 10, which is axially displaced against the spring force of the conical spring 11. The above the slots 9 entrained driving pins 8 give the Pulley 13 free, but engage with its other end Bores 20 of a further clutch disc 21, which is also is mounted on the input shaft 3 and with one with the Coupling disk 21 permanently connected sprocket 22 drives the emptying device of the loading wagon via a chain. This position the coupling 4 is shown in the lower half of the section in FIG.

The switch to chopping mode is done again via the shift linkage 15, a tension spring 23 supporting the shifting process. As a result, the thrust ring 18 is pulled back again, so that the conical spring 11, the driving pin 8 and the release pin 19 can move and a coupling between the drive plate 6 and pulley 13 takes place.

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Claims (4)

Claims 1. Changeover and overrunning clutch, especially for chopper 1 adewagen, characterized in that on the input shaft (3) of the Häcksel 1adewagens one from the tractor seat over one Switching linkage (15) actuatable changeover clutch (4) is arranged for the optional drive of the chopping unit or the emptying device, the ones being designed as drivers Recesses (12) in a belt pulley (13) of the changeover clutch; 4) are arranged in such a way that the clutch at Chopper operation also serves as an overrunning clutch. 2. Coupling according to claim 1, characterized in that the recesses (12) are shaped so that the driving pins (8) in Take the pulley (13) for the chopping drive along in one direction of rotation, while they are used to form the overrunning clutch in the other direction of rotation through inclined contact surfaces (14) can slide out of the recesses (12). 3. Coupling according to claim 1, characterized in that the switching of the coupling (4) from chopping to unloading operation The release pin (19) acted upon by the shift linkage (15) takes place via a pressure ring (10) inside the clutch - 7 - 309840/02 13 (4) the driving pins (8) over existing ones in the latter Slots (9) against the force of a conical spring (11) from the recesses (12) of the belt pulley (13) in bores (20) of the Move the clutch disc (21) with the sprocket (22) for the unloading device. 4. Coupling according to claims 1 to 3, characterized in that the transmission medium from the EintriebswelIe (3) into the Coupling (4) a driver plate firmly connected by means of a feather key (5) (6) serves, in which the driving pin (8) is displaceable are stored. 309840/0213