Feeding-free rice and wheat combine harvester

Abstract

The invention discloses a feeding-free rice and wheat combine harvester, which is characterized in that only rice ears are fed into the harvester, straws are crushed and returned to the field on an outer machine, straw conveying and screening procedures are reduced, the combine harvester is composed of a grain lifting device, a threshing device, a winnowing and impurity removing device and a straw returning device, and a small crawler-type rotary cultivator is used as a walking power part. The grain lifting device is composed of at least four sets of grain lifting chains (1) installed on the machine frame side by side, the grain lifting chains are low in front and high in rear and pull and press rice ears into the threshing device (2), threshing teeth are installed at the two ends of a threshing wheel, and threshed rice grains are conveyed to blades in the middle of the threshing wheel (2) through a screen (3) and an auger shaft (4) below to be lifted to the winnowing impurity removing device. An air suction pipe (5) is installed above the winnowing discharging bin, a vibrating screen (6) is installed below the winnowing discharging bin to remove impurities, a grain removing bin and a grain unloading machine (10) are installed below the winnowing discharging bin, threshed straw is smashed and returned to a field from the position below a machine head to a field returning cutter (7) below the machine head, the actions can be continuously repeated in the forward running process of the rotary cultivator, and the working efficiency of the harvester is obviously improved.

Description

Technical Field

[0001] This patent designs a harvesting head for rice and wheat, and a crawler-type rotary tiller or a powered tiller boat can be used for power and traveling. Background Art

[0002] With the continuous development of agriculture in our country, the application of various agricultural machinery has become more and more common. Especially for rice and wheat harvesting machinery, there are currently two well-known types of rice and wheat harvesters. One is the full-feed type, and the other is the semi-feed type. Both of these two harvesters first cut the straw and then transport it to the thresher for threshing and then winnow and remove impurities. Since the volume of straw and leaves is much larger than that of rice grains, the components for transportation, threshing, and winnowing need to be large and precise, with complex structures, high manufacturing costs, large grain losses, and they cannot harvest in small fields or muddy fields.

[0003] Compared with the prior art, this patent adopts a non-feed type, only harvesting rice ears into the machine, and crushing the straw outside the machine, reducing the processes of transporting straw and screening, making the fuselage short and light, reducing the manufacturing cost, and can be installed on a small tractor to achieve multi-purpose use of one machine.

[0004] Content of the Invention Patent

[0005] A non-feed type rice and wheat combine harvester is composed of a lifting device, a threshing device, a winnowing and impurity removing device, and a straw crushing device: The lifting device is composed of at least four groups of lifting chains arranged side by side on the frame. The threshing device is installed horizontally below, the winnowing and discharging device and the storage bin are installed at the upper rear, and the straw crushing device is installed at the lower rear. Description of the Drawings

[0006] Figure 1 It is the overall structure and working principle diagram of the invention patent

[0008] Figure 2 It is Figure 1 the front view

[0009] Figure 3 It is Figure 1 the rear view Detailed Implementation Modes

[0010] The following further elaborates on this patent in conjunction with the drawings

[0011] Such as Figure 1 Figure 2 Figure 3As shown in the figure, the present invention is a patent for an automatic feeding rice and wheat combine harvester, which is composed of a lifting device, a threshing device, a winnowing and impurity removal device, and a straw crushing device. The power walking part uses a rotary tiller or a tillage boat. The lifting device is composed of at least four groups of lifting chains arranged side by side on the frame. The front of the lifting chain is lower and the rear is higher, which pulls and presses the rice ears into the threshing device (2). Threshing teeth are installed at both ends of the threshing wheel. After threshing, the rice grains are conveyed by the sieve mesh (3) and the auger shaft (4) below to the middle blade and then transmitted to the blade in the middle of the threshing wheel (2) and lifted to the winnowing and impurity removal device. An air suction pipe (5) is installed above the winnowing bin, and a vibrating sieve (6) is installed below for impurity removal. A storage bin and a grain unloading machine (10) are installed further below. After threshing, the straw is returned to the field by the tilling knife (7) from below the machine head to the lower rear.

Claims

1. A no-feed rice and wheat combine harvester. The "no-feed" means that only the rice ears are fed into the machine, and the straw is pulverized and returned to the field outside the machine, reducing the processes of transporting the straw and screening. It consists of a reel device, a threshing device, a winnowing and cleaning device, and a straw returning device. The walking power part uses a small crawler rotary tiller. The reel device is composed of at least four groups of reel chains (1) arranged side by side on the frame. The reel chains are lower at the front and higher at the rear to pull and press the rice ears into the threshing device (2). Threshing teeth are installed at both ends of the threshing wheel. After threshing, the rice grains are transported through the screen (3) below and the auger shaft (4) to the blades in the middle of the threshing wheel and lifted to the winnowing and cleaning device. An air suction pipe (5) is installed above the winnowing bin, a vibrating screen (6) is installed below for cleaning, and a storage bin and a grain unloading machine (10) are installed further below. After threshing, the straw is pulverized and returned to the field by the straw returning knife (7) from below the front of the machine to the rear below. The above actions can be continuously repeated during the forward movement of the rotary tiller, significantly improving the working efficiency of the harvester.

2. The reel device (1) is composed of at least four groups of reel chains arranged side by side on the frame. 8 - 10 pulling teeth are installed on each group of chains, and a turbine rotating shaft is installed horizontally at the top.

3. The threshing device is composed of a threshing wheel (2), a screen (3), and an auger shaft (4). 8 - 10 centrifugal blades are installed horizontally in the middle of the threshing wheel (2), threshing teeth are installed at both ends, screens are installed respectively below, centrifugal blades are installed in the middle of the auger shaft, and auger blades are installed at both ends.

4. The winnowing and cleaning device is composed of an air suction pipe, a blower (5), a vibrating screen (6), and a storage bin (10).

5. The straw returning device is composed of a flail straw chopper (7) and a hydraulic lift (9).

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