CN103168572A

CN103168572A - Grain splashing prevention device on double-roller threshing machine with double rollers

Info

Publication number: CN103168572A
Application number: CN2013101357365A
Authority: CN
Inventors: 何培祥; 孔维蓉; 蒋猛; 袁瑛; 何家成; 徐丹; 李博
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2013-04-18
Filing date: 2013-04-18
Publication date: 2013-06-26
Anticipated expiration: 2033-04-18
Also published as: CN103168572B

Abstract

The invention discloses a grain splashing prevention device on a threshing machine with double rollers. The key points are as follows: the device comprises two inclined baffles which are arranged in a splayed shape below the double rollers of a harvesting machine; the lower end of each baffle is communicated with a grain collecting box; a brush roll is arranged below each baffle and the brush rolls are driven by a driving mechanism and rotate reversely; brush wires of the brush rolls are inserted in spaces among the rice or wheat straws so as to prevent the grains from splashing down to the field and the grains in the spaces can be swept out and sent onto the baffles by the brush wires when the brush rolls rotate; and the distance from each brush roll to the corresponding baffle allows the deformed wires of the brush roll to pass through rotatably. The brush wires before deforming are crowded together, so that the tightness is improved and falling grains can be received by the brush wires and slide into the grain collecting box. By the device, the loss ratio of the inclined threshing-before-harvesting combined machine with double rollers can be effectively lowered.

Description

Anti-grain on a kind of Double-drum threshing machine structure splashes down device

Technical field

The present invention relates to a kind of tilting twin-roll combine harvester adopting harvest method of threshing prior, relate in particular to and this grain header on a kind of anti-grain splash down device.

Background technology

At present most of combine is all threshing mode after traditional first cutting on the market; specifically be divided into again full feeding threshing and partly feed the threshing mode, dual mode all more or less has the shortcomings such as separating mechanism is complicated, complete machine weight is large, power consumption is large, efficient is low, manufacturing cost is high.Propelling along with Tendency of Agricultural Machinery in China, introduced in recent years half feed combine harvester of Japan in the southwest, simultaneously some enterprises of China also independent research part baby combine (only threshing being carried out in the cutting of rice wheat head head), this two classes grain header big-and-middle-sized combine with respect to the north on weight and volume all decreases, but because mostly the Southwestern China area is the mountain and hill landform, common rice field area is little, the field is without tractor road, and larger and heavier agricultural machinery is difficult to enter the field operation.Therefore for the rural area in southern hills area, the grain header of the above-mentioned type all can not well adapt to local physical geographic environment, in the urgent need to the miniature combine harvester that a kind of volume is little, lightweight, efficient is high.

In order to address the above problem, in recent years, a lot of people begin to pay attention to and research and develop the combine harvester adopting harvest method of threshing prior with the multiple advantage such as simple in structure, that volume is little, power consumption is little, and " threshing prior to cutting " is that the harvesting approach of threshing is directly carried out with the grain tassel part of nature growth in the field.Although threshing prior to cutting has many good qualities, but because starting is late, combine harvester adopting harvest method of threshing prior still has many shortcomings not yet to solve, and as large in spatter loss, leakage receipts phenomenon is many etc., combine harvester adopting harvest method of threshing prior also is in development and experimental stage at present, not yet enters spread.

Tilting twin-roll threshing combine is a kind of in Preharvest threshing harvester, utilize stalk rice wheat to be in the state of self-sow, do not clamp the stalk of rice wheat head head below before the cutting with clamping chain, the fringe head is sent into carried out threshing between threshing cylinder, because cylinder is made tilting, make the different fringe head of height can obtain threshing, threshing performance is high, has solved leakage receipts problem; There is hood the cylinder top, and grain splashes little to surrounding; Complete machine structure is simply compact, and consumed power is low, high efficiency.This tilting twin-roll combine harvester adopting harvest method of threshing prior efficiently solves the subject matter in threshing prior to cutting, yet when using above-mentioned technology, finds that grain can splash to the field from the space between Double-drum sheller unit, causes damage.

Summary of the invention

The purpose of this invention is to provide anti-grain on a kind of Double-drum threshing machine structure and splash down device.

to achieve these goals, by the following technical solutions: the anti-grain on a kind of Double-drum threshing machine structure splashes down device, it is characterized in that: described device comprises the twin-roll below that is arranged at grain header, two sloping baffles that are " eight " set up of character patt ern, the end that baffle plate is low is being communicated with the collection tanker, respectively be equipped with a brush roll below two baffle plates, brush roll drives reverse rotation simultaneously by driving mechanism, the brush silk of brush roll inserts rice wheat straw bar gap and prevents that grain from splashing to the field, grain in the gap can be scanned out during rotation delivers on baffle plate, rotate after distance permission brush deformation of filament between brush roll and baffle plate and pass through.

Described brush silk is the nylon yarn of high resiliency, high abrasion.

The driving mechanism of described brush roll is that the motor of two adjustable rotating speeds drives alone, perhaps directly drives through deceleration device by threshing cylinder.

The present invention solves grain from splashing to the problem in field between threshing cylinder, has greatly reduced the percent of loss of grain header, increases work efficiency and reliability.

Description of drawings

Fig. 1 is general structure schematic diagram of the present invention;

Fig. 2 is the cutaway view of A-A in Fig. 1;

Fig. 3 is the cutaway view of B-B clamping chain in Fig. 2;

Fig. 4 is the structural representation of baffle plate, brush roll, driving mechanism;

Fig. 5 is the structural representation of C-C in Fig. 4.

In figure: the 1-field; 2-rice wheat; 3-collection tanker; The 4-concave grate; The 5-cylinder; The 6-spike-tooth; The 7-bow tooth; The 8-baffle plate; The 9-brush roll; The 10-clamping chain; The 11-driving mechanism.

Embodiment

The present invention will be further described below in conjunction with the drawings and specific embodiments.

To shown in Figure 5, on tilting twin-roll combine harvester adopting harvest method of threshing prior, two cylinder 5 fore-and-aft tilts are placed, and are low after front height, can carry out threshing to the different rice wheat head head of height as Fig. 1; Cylinder 5 belows are concave grates 4, separate grain and foreign material, and grain falls into following collection tanker 3; Clamping chain 10 is along with the rotation of former and later two axles, and clamping rice wheat head head and entered and carry out threshing between threshing cylinder 5.

The device that anti-grain splashes down mainly comprises baffle plate 8, brush roll 9, driving mechanism 11.Two baffle plates 8 are " eight " font slant setting below two cylinders 5, a low end communicates with collection tanker 3, and the shape of baffle plate 8 is as figure, and there is angle in the place ahead, and effect is to facilitate the stalk of rice wheat 2 to enter.A brush roll 9 is respectively settled in the below of two baffle plates 8, brush roll 9 drives reverse rotation simultaneously by driving mechanism 11, the brush silk of brush roll 9 inserts rice wheat straw bar 2 gaps and prevents that grain from splashing to the field, grain in the gap can be scanned out during rotation and deliver on baffle plate 8, rotate after the distance permission brush deformation of filament that brush roll 9 and baffle plate are 8 and pass through, the distortion before the intensive sealing that together improves of brush silk, catch the grain that falls down make its slide into enter on baffle plate 8 collection tanker 3.The driving mechanism 11 of two brush roll 9 can be that the motor of two adjustable rotating speeds drives alone, perhaps directly drives through deceleration device by threshing cylinder 5.

during operation, utilize the self-sow state of 1 li in the field, rice wheat 2 to fix the root of rice wheat 2, clamping chain 10 is clamped rice and wheat straw 2, rice wheat head head is along with the movement of clamping chain 10, stable, fully feed between two cylinders 5, two cylinders 5 that tilt to lay are upwards reverse rotation simultaneously, under the combing and strike of bow tooth 7 and spike-tooth 6, grain comes off, grain enters in collection tanker 3 after concave grate 4 separates, when having the grain that splashes to splash down from 5, two cylinder, a part drops to baffle plate 8 or is suppressed on intensive brush silk by baffle plate 8 and directly puts under in collection tanker 3 along the baffle plate 8 that tilts, some drops in the gap of rice and wheat straw 2, upwards the brush roll 9 of reverse rotation scans out it and delivers on baffle plate 8 from the gap, reduced greatly the grain that splashes down.

Simplicity of design of the present invention is compact, can effectively reduce the grain that splashes down, make tilting twin-roll combine harvester adopting harvest method of threshing prior further reduce percent of loss, increase work efficiency and reliability, this solution of problem will promote tilting twin-roll combine harvester adopting harvest method of threshing prior better to be applied to the rice wheat harvesting in south China mountain and hill area.

Claims

1. the anti-grain on a Double-drum threshing machine structure splashes down device; it is characterized in that: described device comprises the twin-roll below that is arranged at grain header; two sloping baffles that are " eight " set up of character patt ern; the end that baffle plate is low is being communicated with the collection tanker; respectively be equipped with a brush roll below two baffle plates; brush roll drives reverse rotation simultaneously by driving mechanism; the brush silk of brush roll inserts rice wheat straw bar gap and prevents that grain from splashing to the field; grain in the gap can be scanned out during rotation and deliver on baffle plate, rotate after the distance permission brush deformation of filament between brush roll and baffle plate and pass through.

2. the anti-grain on Double-drum threshing machine structure as claimed in claim 1 splashes down device, it is characterized in that: described brush silk is the nylon yarn of high resiliency, high abrasion.

3. the anti-grain on Double-drum threshing machine structure as claimed in claim 1 or 2 splashes down device, and it is characterized in that: the driving mechanism of described brush roll is that the motor of two adjustable rotating speeds drives alone, perhaps directly drives through deceleration device by threshing cylinder.