CN102939829A

CN102939829A - Vibrating screen of combine-harvester

Info

Publication number: CN102939829A
Application number: CN2012104779167A
Authority: CN
Inventors: 乌国民; 王敏; 胡万祥; 王战飞; 慎沈杰; 吴洁浩
Original assignee: HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE CO Ltd
Current assignee: HUZHOU FENGYUAN AGRICULTURAL EQUIPMENT MANUFACTURE CO Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-02-27

Abstract

The invention relates to the technology of combine-harvesters and particularly relates to a vibrating screen of a combine-harvester. The technical scheme is that the vibrating screen of the combine-harvester comprises a screening box frame, an upper screen and a bottom screen. The upper screen and the bottom screen are longitudinally distributed between two sides of the screening box frame, and the upper screen comprises a whole plate with a first screening hole. The vibrating screen facilitates elimination of straws and improves grain cleanliness.

Description

A kind of vibratory sieve of combine

Technical field

The present invention relates to the combining machine technology, particularly a kind of vibratory sieve of combine.

Background technology

Vibratory sieve in the present technology, number be the reciprocating oscillating screen of the disclosed a kind of full feeding rice and wheat combine of utility model patent of CN200962743Y such as Granted publication, it has upper sieve and lower sieve, then sieve is to be formed by a plurality of strip sheet material arranged distribution on it, therefore, between adjacent two plies, have long space, so that straw drops to from the space on the lower sieve easily, thereby make straw be difficult for being cleared out; And for example Granted publication number is the symmetry regulation vibration screen device of the disclosed combine of utility model patent of CN201290252Y, and its screen plate also is to be formed by a plurality of strip sheet material arranged distribution; And for example Granted publication number is the vibratory sieve of the disclosed a kind of grain header band lengthened blades of utility model patent of CN202077391U, and its vibratory sieve also is to be formed by many plies arranged distribution.

Summary of the invention

The vibratory sieve that the purpose of this invention is to provide a kind of combine, this kind vibratory sieve is conducive to eliminate straw, improves the grain cleannes.

Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of vibratory sieve of combine, comprise the screening box-frame, vertically be distributed in top sieve between the described screening box-frame both sides and end sieve, described top sieve comprises the whole plate that has the first sieve aperture.

Top sieve can be a whole plate of piece, also can be formed by two or more than two whole plate, the gap between the adjacent whole plate should be less or seamless link or junction for forming a plurality of gaps; Thereby avoid making straw to drop on the end sieve, make straw be convenient to be cleared out.

As of the present invention preferred, described top sieve is the whole plate that has described the first sieve aperture.

As of the present invention preferred, described whole plate undulate.

Be beneficial to the growth material and have the blowing device that acts on vibratory sieve toward contact on the holdup time on top sieve, particularly combine, corrugated setting just is particularly conducive to less material and is not blown away, thus the cut loss rate.

As of the present invention preferred, both sides, described whole Lamb wave peak all have described the first sieve aperture.

Be convenient to, particularly be convenient to less material and fall into the first sieve aperture at the leeward side of whole plate, with the cut loss rate.

As of the present invention preferred, this kind vibratory sieve also comprises the tail sheet that is positioned at screening box-frame one end; The angle that a wherein side of both sides, described whole Lamb wave peak and horizontal plane form is greater than the angle of opposite side and horizontal plane formation; And form the more close tail sheet of this crest opposite side of the larger side of angle with horizontal plane.

Vibratory sieve also has the material shaking plate at the other end of screening box-frame; The wind direction of above-mentioned blowing device generally is to blow to tail sheet from the material shaking plate; Above-mentioned setting, so that in the both sides, whole Lamb wave peak wherein a side of more close tail sheet be leeward side, and owing to spend closer to 90 than opposite side with the horizontal plane angle, so in the both sides, whole Lamb wave peak wherein a side of more close tail sheet be difficult for wind-engaging to impact, the less material of being more convenient for drops from the first sieve aperture, to reduce percent of loss.

As of the present invention preferred, a side and the formed angle of horizontal plane that the angle that the both sides at described whole Lamb wave peak and horizontal plane form is larger are the 80-90 degree.

As of the present invention preferred, sieve of the described end comprises the whole plate that has the second sieve aperture.

In the prior art, end sieve is formed by the wire track and column braiding often, and sieve of this end particularly tends to block grain or straw and so between two wires, thereby is not easy to cleaning; The generation of this kind phenomenon has been avoided in above-mentioned setting of the present invention.

As of the present invention preferred, sieve is for dull and stereotyped at the described end.

As of the present invention preferred, the aperture of described the first sieve aperture is 1-2cm.

As of the present invention preferred, the aperture of described the second sieve aperture is 1-2cm.

In sum, the present invention has following beneficial effect: the present invention is simple in structure, and is easy to implement; Energy Effective Raise grain cleannes are beneficial to the cleaning vibratory sieve, also are conducive to the cut loss rate.

Description of drawings

Fig. 1 is the example structure schematic diagram;

Fig. 2 is A section enlarged diagram among Fig. 1;

Fig. 3 is the embodiment rearview;

Fig. 4 is B section enlarged drawing among Fig. 3;

Fig. 5 is the embodiment end view.

Among the figure, 1, the screening box-frame, 5, the material shaking plate, 4, tail sheet, 2, top sieve, 3, end sieve, 61, the bearing with spherical outside surface of usheing to seat, 62, eccentric bearing block, 63, capacity eccentric bearing, 64, rotating shaft, 65, eccentric chain-wheel, 66, spring bearing, the 21, first sieve aperture, the 31, second sieve aperture, 41, catch.

Embodiment

Below in conjunction with accompanying drawing the present invention is described in further detail.

This specific embodiment only is explanation of the invention; it is not limitation of the present invention; those skilled in the art can make the modification that does not have creative contribution to present embodiment as required after reading this specification, but as long as all are subject to the protection of Patent Law in claim scope of the present invention.

Embodiment: shown in Fig. 1-5, a kind of vibratory sieve of combine comprises screening box-frame 1, is respectively equipped with material shaking plate 5 and tail sheet 4 at the two ends of screening box-frame 1, also is distributed with up and down top sieve 2 and end sieve 3 between the both sides, middle part of screening box-frame 1.

Screening box-frame 1 all is provided with the bearing with spherical outside surface 61 of usheing to seat in both sides below tail sheet 4 sides, be fixed on the eccentric bearing block 62 of screening box-frame 1, be placed in the capacity eccentric bearing 63 in the eccentric bearing block 62, two ends are placed in respectively in two bearing with spherical outside surfaces 61 of usheing to seat and are arranged in the rotating shaft 64 of capacity eccentric bearing 63, and a side of the bearing with spherical outside surface 61 of usheing to seat is provided with the eccentric chain-wheel 65 that is fixedly connected on rotating shaft 64 therein; Screening box-frame 1 is provided with spring bearing 66 at material shaking plate 5 side-lowers; Said structure formation under the cooperatively interacting of other external driver device drives the transmission mechanism that vibratory sieve moves back and forth and vibrates.

Top sieve 2 is a whole plate that has the first sieve aperture 21, and the aperture of the first sieve aperture 21 is 1-2cm, and this whole plate undulate, and the angle of a wherein side of these both sides, whole Lamb wave peak and horizontal plane formation is greater than the angle of opposite side and horizontal plane formation; And form the more close tail sheet 4 of this crest opposite side of the larger side of angle with horizontal plane; A side and the formed angle of horizontal plane that the angle that the both sides at whole Lamb wave peak and horizontal plane form is larger are the 80-90 degree; And both sides, whole Lamb wave peak all have the first sieve aperture 21; To improve the holdup time of material on top sieve 2, with the cut loss rate, help simultaneously to improve the grain cleannes.

End sieve 3 is for having the whole plate of the second sieve aperture 31, and this whole plate can be flat board, and the aperture of the second sieve aperture 31 is 1-2cm.

Below tail sheet 4, also be provided with two catch 41, so that make the material that falls from tail sheet 4, can be from falling into the screw feeder of below between two catch 41, so that after being transferred, again screen; Screw feeder is not shown in the drawings.

Tail sheet 4 is netted; It is wavy that material shaking plate 5 also is.

Claims

1. the vibratory sieve of a combine comprises screening box-frame (1), vertically is distributed in top sieve (2) and end sieve (3) between described screening box-frame (1) both sides, it is characterized in that described top sieve (2) comprises the whole plate that has the first sieve aperture (21).

2. the vibratory sieve of a kind of combine according to claim 1 is characterized in that, described top sieve (2) is for having the whole plate of described the first sieve aperture (21).

3. the vibratory sieve of a kind of combine according to claim 1 and 2 is characterized in that, described whole plate undulate.

4. the vibratory sieve of a kind of combine according to claim 3 is characterized in that, both sides, described whole Lamb wave peak all have described the first sieve aperture (21).

5. the vibratory sieve of a kind of combine according to claim 3 is characterized in that, this kind vibratory sieve also comprises the tail sheet (4) that is positioned at screening box-frame (1) one end; The angle that a wherein side of both sides, described whole Lamb wave peak and horizontal plane form is greater than the angle of opposite side and horizontal plane formation; And form the more close tail sheet of this crest opposite side (4) of the larger side of angle with horizontal plane.

6. the vibratory sieve of a kind of combine according to claim 5 is characterized in that, a side and the formed angle of horizontal plane that the angle that the both sides at described whole Lamb wave peak and horizontal plane form is larger are the 80-90 degree.

7. the vibratory sieve of a kind of combine according to claim 1 is characterized in that, described end sieve (3) comprises the whole plate that has the second sieve aperture (31).

8. the vibratory sieve of a kind of combine according to claim 7 is characterized in that, described end sieve (3) is dull and stereotyped.

9. the vibratory sieve of a kind of combine according to claim 1 is characterized in that, the aperture of described the first sieve aperture (21) is 1-2cm.

10. the vibratory sieve of a kind of combine according to claim 7 is characterized in that, the aperture of described the second sieve aperture (31) is 1-2cm.