Combine Harvesters: Sophisticated Hydraulic Reverse Gains Mojo

Over the years, the technical evolution of the combine machines has been profound. Sophisticaed electronics in the cockpit, larger and larger cutting widths and enhanced performance substantiates the efficaciousness of new the new machines, leading to profound demand of harvesters.

Ever since the stationary threshing was invented in 1785 by the Scots, extensive technological developments have been witnessed in grain-crop harvesting. The U.S. and the Western European countries are trailblazers of self-propelled equipment for combine harvesting with growing demands on throughput, efficaciousness and accurate straw spreading in the swath chopped. Stationary and self-propelled equipment for combine harvesting were used globally in 2007 for the harvest of millions of hectares of crops. According to Food and Agriculture organization, planting proportions led to global harvest of 2.35 billion tons of cereals in 2007.

Electronic equipment are increasingly being adopted in the combine harvester as the pertinent manufacturers look to achieve the following objectives:

• Facilitating drivers;
• Maximum Capacity Use;
• Precise Working;
• Documentation of Several performance measures.

What Does Harvesting Incorporate?

The crops that are grown in fields, such as wheat, barley, and rye are merely partly edible. The seeds that are at the top of each plant can be used to make products such as bread and cereal, however, the dry coatings of the seeds—chaff—are inedible and have to be spurned along with their stalks.

Prior to the development of modern-day machines, agricultural workers harvested crops through carrying out a series of laborious operations one after another. Firstly, they would cut down the plants with a scythe. Further, they would separate the edible grain from the inedible chaff through the beating of cut stalks, called as threshing. Lastly, they would clean any remaining scrap away from the seeds to make them apt for use in a mill. No wonder this was time consuming and demanded large number of manpower.

Modern and sophisticated combine harvesters tend to do all the work automatically by driving them through a field of crops and they cut, thresh and clean the grains by using wheels, blades, sieves and elevators. The grain collects in a tank inside the combine harvester and the chaff and the stalks shoot from a big exit pipe at the back and fall back down onto the field. Looking at all such profitable aspects of this device category, the combine harvesters market is expected to gain serious traction.

Noise Exposed of Combine Harvesters

Technology has been used to develop a range of labor saving machine systems. However, technological development of man-machine systems possess unwelcomed side effects. Noise is one of the prevalent problems of the man-machine systems. With the cacophony of the harvester, agricultural workers experience one of the highest rates of hearing loss among all occupations. This is substantiated partly by various potential sources such as combine harvesters, tractors, choppers, chain saws and grain dryers.

As opined by KUTZBACH and QUICK in 1999, the gathering, cutting, threshing, separating, cleaning and material handling are the main processes in a modern harvesters. Presently, designers are of the combine harvesters are heavily focusing on:

• Amelioration of the quality of Control Process;
• Improvement of Automatic Control;
• Enhancing the trafficability of the chassis and the environment protection.

Designers claim an increase in engine power propels the throughput of the combine harvester. Meanwhile, the throughput of the combine harvester is not only linked with the power of the engine, it is more associated with the separation of deck area, straw walker and cleaning mechanism capacity.

Owing to climate changes—heavy rainfall and winds—it is imperative to harvest heavy laid crop stands, crops with grain moisture content over 20 percent. Ergo, the work of the combine harvesters is assessed to decide the relationship between working conditions and allowable mass flow to the combine harvester threshing machine, fuel consumption, grain losses and performance.

The domination of hybrid combine harvesters equipped with two axial rotary straw separators in lieu of straw walkers that are used on conventional combine harvesters. As such, combine harvesters with axial threshing-separating device, post design improvement of the axial drum, are profoundly used for harvest of the grain crops with surged grain moisture content.

Intelligent Harvest at Work

The output of the harvest job is decided by how aptly an operator controls the combine harvesters. The ergonomically shaped multifunction lever, the combine harvesters provide tremendous driving, comfort and ease of operation. Accordingly, the multifunction lever is applied to regulate ground speed and manage many other functions conveniently:

1. Cutterbar and reel settings;
2. Direction of travel;
3. Cutter brake;
4. Grain tank offloading ON/OFF;
5. Pivoting the grain tank discharge auger.

Ergonomically integrated in the operating panel, compact CIS terminal provides the operator a rapid overview of an array of essential machine data, the interaction between the operator and the machine are relentlessly propelled during the job.

The sophisticated hydraulic reverse with protective reversing and high starting torque in combine harvesters have been instrumental in clearing blockages. As such, the hydraulic reverse are actuated with a toggle switch in the cab. The direction of rotation of the hydraulic reel drive too changes automatically, offering extra support for the reversing procedure.

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Created on Apr 24th 2019 08:20. Viewed 414 times.

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