Claas piggyback

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Claas Brothers Maschinenfabrik
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Piggyback
Manufacturer: Claas
Sales designation: Piggyback
Production period: 1956-1960
Engines: MWM AKD 9 ZB , ( Diesel, 795 cm 3 , 9.5-11 kW )
or
Hatz E89 , ( Diesel, 668 cm 3 9 kW )
or
Hatz F1S , ( Diesel, 1125 cm 3 , 9.5 kW )

for threshing : VW Type 122
( Otto, 1192 cm 3 , 20 kW )
Length: 6950 mm
Width: 2520 mm
Height: 2750 mm
Gauge: 1250-1875 mm
Standard tires: 9.00-24 AS
5.50-16 TF
Top speed: 18.1 km / h
Empty weight: Without thresher attachment: 1360 kg
Previous model: none
Successor: none

The Huckepack is an agricultural vehicle from Claas that is both an implement carrier and a combine harvester . It was presented in September 1956 at the 44th DLG exhibition in Hanover and was developed primarily for small businesses. One reason for the failure of the concept was, in addition to its inadequate engine power, the high price; in 1957 the piggyback cost 17,680  DM (equivalent to 43,087 EUR today ). Since the piggyback could not establish itself on the market, production was stopped in 1960.

technology

As a universal vehicle for agriculture, the Huckepack consists of two parts: a chassis that can be used as an equipment carrier and a combine harvester body, which requires the Huckepack chassis to operate. The thresher superstructure is mounted on the piggyback and the driver's seat rotated by 180 °. This creates a fully-fledged self-propelled combine harvester. The thresher superstructure is driven by its own motor independently of the chassis.

chassis

The Huckepack has a two-spar equipment carrier chassis with a front swing axle and a rear rigid axle. The longitudinal spar can be removed. The driver's platform is mounted above the left drive wheel (without thresher superstructure), the engine and gearbox are installed in front of the drive axle. The range of engines included three different diesel engines, from 1956 a single-cylinder engine with 668 cm 3 displacement from Hatz Diesel with 12 HP (about 9 kW), which is installed horizontally, or a larger single-cylinder diesel engine, also from Hatz with 1125 cm 3 displacement and one power of 13 PS (about 9.5 kW) at 1500 min -1 . From 1958 it was an air-cooled two-cylinder boxer engine from MWM with 795 cm 3 displacement and a continuous output of 13 DIN HP (about 9.5 kW) at 3000 min −1 that produced a maximum output of 15 DIN HP (11 kW). All motors are coupled to a five-speed dog gear, which is preceded by a reversing gear. The piggyback can therefore drive forwards and backwards at the same speed. For attachments, it has a three-point linkage behind the drive axle. Attachments designed for equipment carriers that are mounted between the axles can also be operated hydraulically. In addition, the piggybacking also has a ground speed PTO and an independent power take-off shaft with 540 min -1 rotates.

Combine construction

The combine harvester body is a complete unit that is built onto the chassis and can be separated from it again. However, attaching the thresher structure was quite complicated and required a lot of manipulations (see advertising film under "Web links"). According to contemporary advertising, the dismantling of the thresher superstructure should be possible in about an hour with two men, more recent information from Claas cites half an hour. Since the engine of the chassis is too weak to drive the chassis and threshing mechanism, the thresher superstructure has its own additional VW industrial engine with 27 HP (20 kW).

The cutting unit has a width of 2100 mm or 1800 mm, it is hydraulically height adjustable, has a spring tine pickup reel and is equipped with 14 crop lifters as standard. The grain passes from the cutting unit into the threshing drum with a diameter of 450 mm and a width of 800 mm, it has six beater bars and the speed can be set between 890 min −1 and 1380 min −1 . The concave is not adjustable. The Huckepack has a small, three-part rack shaker and a cleaning system with a lamellar and lower sieve. The barrel fan cannot be adjusted. The grain is conveyed to a sorting cylinder on the roof of the thresher, where it is sorted and bagged according to three qualities; there was no grain tank. The straw is pressed into bales by a built-in straw press and tied once.

Literature and Sources

  • Jürgen Hummel, Alexander Oertle, Jan Sternberg, Peter Felser: Combine harvesters: history and technology . wk & f Kommunikation, Kempten 2008, ISBN 978-3-89880-417-2 , p. 37 .

Remarks

  1. ↑ Combine harvester: history and technology gives 27 HP (20 kW), vehicle sides gives 25 HP (18.5 kW), both figures are realistic.

Individual evidence

  1. ↑ Coupling catalog. Page 20
  2. ↑ a b c d Peter Kautz: Claas piggyback . In vehicle pages
  3. ↑ a b Tractor Yearbook 2009, p. 28
  4. ↑ a b combine harvester: history and technology, p. 37
  5. ↑ Manfred Baedecker, Ralf Lenge: The Claas combine harvester story . 2nd Edition. Landwirtschaftsverlag, Hiltrup 2003, ISBN 978-3-7843-3053-2 , p. 56 .
  6. ↑ a b Claas product history: 1956 Huckepack - the all-purpose system ( Memento from January 3, 2017 in the Internet Archive )
  7. ↑ a b MWM Diesel - Operating Instructions AKD 9 ZB, page 5
  8. ↑ It's there ... the self-propelled Claas piggyback p. 2

Web links