CN2244289Y

CN2244289Y - Cylindric screen grain cleaner for combine harvester

Info

Publication number: CN2244289Y
Application number: CN95246692U
Authority: CN
Inventors: 叶菁德
Original assignee: AGRICULTURE MACHINERY INST SHANGHAI FARM ADMINISTRATION
Current assignee: AGRICULTURE MACHINERY INST SHANGHAI FARM ADMINISTRATION
Priority date: 1995-12-20
Filing date: 1995-12-20
Publication date: 1997-01-08
Anticipated expiration: 2005-12-20

Abstract

The utility model relates to a cylindrical screen grain cleaner for a combined harvester. Cylindrical screens (4), (5) and (6) which are arranged in parallel are rolled by screen nets having square holes with a diameter between 35 mm and 45 mm in order to enhance separating capacity for seeds in materials. The tail part of a seed slide carriage is provided with a flange (8) and a vertical gas flow adjusting plate (7) of a circular arc component (13). The rotation speed of the cylindrical screens and the wind power and the wind direction of a blower are needed to change, and the index of cleaning rice is not changed even if a residue auger and a fan for lifting grain are eliminated. The utility model has the advantages of compact and reasonable structure, convenient operation and operational safety, cost is reduced more than 20 %, power consumption is lowered by 15 %, and seed breaking rate is reduced more than 60 %.

Description

The drum sieve cleaning mechanism of combined harvester

The utility model relates to a kind of results of cereal---thresher machine, and relates more specifically to a kind of drum sieve cleaning mechanism of combined harvester.

In background technology, traditional combined harvester cleaning mechanism is to adopt the plane vibration sieve structure.The eighties, the design people proposes to roll---the clear grain principle of air-flowing type, and design the drum sieve cleaning mechanism in view of the above, be used on the III type combine harvester of Shanghai and succeed.The operation principle of this device is to be: cereal to be gathered in the crops is sent into threshing cylinder from header through delivery chute, through after the threshing, the long shoot bar is by outside the grass-removing wheel discharge machine, and emersion object drops on respectively on preceding slide carriage and the back slide carriage by concave grate, and delivered to successively in three drum sieves that are arranged in parallel, to carry out feed separation.Wherein Chong cane and assorted surplus successively through behind three drum sieves, is thrown them on assorted surplus collection auger by its last drum sieve, and then in time sends them back to threshing cylinder by throwing the valley wind fan, takes off again once more; Light clever shell and short and small cane, in the end casting aside in the process of a drum sieve blown out outside the machine by air-flow.Separate the cleaning seed that obtains through cleaning mechanism, all collect screw feeder and collect, and be loaded on in the bag of containing grain by seed.This cleaning mechanism, defectives such as traditional plane vibration sieve structure complexity, machine shape are huge, adjusting bothers, involves great expense have been changed, obtained progress, the part but it still comes with some shortcomings, mainly show: drum sieve system reels with 20 millimeters square hole woven screens and forms, and the part seed needs through assorted surplus collection auger and the friction repeatedly and the strike of throwing the valley wind fan in repeatedly threshing removal process, seed very easily suffers fragmentation, thereby influences the quality of grain; Assorted surplus collection auger and throwing valley wind fan need to consume four kilowatts of horsepower, influence the production efficiency of complete machine; Could operate as normal and throw that the valley wind fan needs under higher rotation speed, and in actual the use because of very easily obstruction, thereby influence the reliability of complete machine.

Primary and foremost purpose of the present utility model is to be to design a kind of when grain harvest and threshing, and seed is difficult for broken, can improve the combined harvester cleaning mechanism of clear grain efficient and quality.Another purpose of the present utility model is to be to design few, the easy to use and reliable combined harvester cleaning mechanism of a kind of consumption of power.Another purpose of the present utility model is to be to design a kind of compactness, rational in infrastructure, combined harvester cleaning mechanism that cost is lower formed.

The utility model is realized by following design: blower fan, seed collection screw feeder, seed slide carriage and uprush adjustable plate are set respectively on the biside plate of frame, other is arranged at the below of threshing cylinder abreast by the screen banks that three wide-aperture drum sieves are formed.Between drum sieve, then be provided with grain and flow through cab apron, and form the work front cover that a machinery cleans, can prevent that assorted surplus centre from two drum sieves from spilling and influence the cleannes of seed with three drum sieves.Because described drum sieve is to adopt 35 to 45 millimeters large aperture woven screen made, thereby increased separating power to seed in the material.Only need to regulate the rotating speed of drum sieve, the wind-force and the wind direction of blower fan simultaneously, make them reach the degree of corresponding coupling, even got rid of original tailing auger in the reaping machine and throwing valley wind fan this moment, can guarantee that still seed percentage of impurity and the seed percent of loss in the clear grain index is constant substantially.

Effect of the present utility model is clearly, when adopting the drum sieve cleaning mechanism of combined harvester described in the utility model, as long as wind-force and wind direction with drum sieve rotating speed, blower fan, be adjusted to the degree of mutual coupling, even get rid of original tailing auger and throwing valley wind fan in the reaping machine, can guarantee that still seed percentage of impurity and the seed percent of loss in the clear grain index is constant substantially.And get rid of described tailing auger and throw the valley wind fan, with the structure that makes whole cleaning mechanism more compact and reasonable, easy to operate, use reliable, it is compared with cleaning mechanism of the prior art, can reduce manufacturing cost more than 20%, reduce power consumption 15%, the seed damage rate reduces more than 60%, thereby realizes the described Expected Results of this specification.

Below in conjunction with accompanying drawing embodiment of the present utility model is described, thereby make CONSTRUCTED SPECIFICATION of the present utility model, characteristics, purpose and advantage clearer and more definite.

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is that present embodiment is configured in the structural representation on the combined harvester.

Fig. 3 is the front view of present embodiment seed slide carriage.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the front view of present embodiment uprush adjustable plate.

Fig. 6 is the left view of Fig. 5.

Among the figure: 1-frame, 2-blower fan, 3-threshing cylinder, 4-drum sieve, 5-drum sieve, 6-drum sieve, 7-uprush adjustable plate, 8-flanging, 9-wind direction guide plate, 10-seed slide carriage, 11-angle, 12-angle, 13-circular arc member, 14-installing hole.

The structure of the utility model embodiment now is described in conjunction with the accompanying drawings:

Shown in accompanying drawing 1,2, the drum sieve cleaning mechanism of the described a kind of combined harvester of present embodiment is by comprising that frame 1 and the threshing cylinder 3, blower fan 2, cylinder screen banks, seed slide carriage 10, the uprush adjustable plate 7 that are arranged on the framework lateral plate are formed.As shown in Figure 2, the front end of described seed slide carriage 10 is fixed by bolts to the outlet lower edge of blower fan 2, both sides then riveted on the sidewall of frame 1.Described cylinder screen banks is made up of three 4,5,6 of wide-aperture drum sieves, and they are the below that is arranged at threshing cylinder 3 with being arranged in parallel.Then be provided with grain above between the

drum sieve

4,5,6 and flow through cab apron, and form the work front cover that a machinery cleans, can prevent that assorted surplus centre from adjacent two drum sieves from spilling and influence the seed cleannes with three

drum sieves

4,5,6.Because described

drum sieve

4,5,6, all be that employing is reeled by aperture wide-aperture square hole woven screen in 35 to 45 millimeters scopes and made, thereby increase is to the separating power of seed in the material.Only need to regulate the rotating speed of drum sieve, the wind-force and the wind direction of blower fan simultaneously, make them reach the degree of mutual coupling, can guarantee that seed percentage of impurity and seed percent of loss in the clear grain index are constant substantially this moment.But after getting rid of original tailing auger and throwing the valley wind fan, make the structure of whole cleaning mechanism more compact, the total length of reaping machine can shorten 250 millimeter, and height can reduce by 180 millimeters, and has increased versatility, stability, the operating flexibility of reaping machine.

In order to effectively utilize the purpose that wind-force reaches further clear grain, shown in accompanying

drawing

3,4, described seed slide carriage 10 is bending, and its angle 11 is best between 120 ° to 130 °.For wind-force being guided effectively into the afterbody of drum sieve, described angle 11 should not be excessive; Slip smoothly to collecting screw feeder for making seed overcome the angle of repose retardance again, described angle 11 is unsuitable too small again.

To form vertical air-flow in order making,, shown in accompanying

drawing

3,4, to be provided with a flanging 8 in addition at the afterbody of described seed slide carriage 10 can utilize the different purposes of grain clearly that reach further of frivolous assorted surplus showy coefficient with seed at cleaning mechanism air outlet place.The design people facts have proved, the angle 12 of described flanging 8 is between 125 ° to 160 °, and the height h of flanging 8 then is best between 100 to 150 millimeters.

For the ease of the size of adjusting air-flow and the height of air-out, thereby reach for the purpose of the preferable clear grain effect, shown in accompanying

drawing

5,6, be provided with a circular arc member 13 on the top of described uprush adjustable plate 7, the radius of curvature R of described circular arc member 13 is good between 20 to 25 millimeters.One group of adjustable installing hole 14 can be set on uprush adjustable plate 7 simultaneously separately, described uprush adjustable plate 7 can be installed on the flanging 8, and can determine its installation position by the position of adjusting installing hole 14, thereby the limit, upper edge of the described uprush adjustable plate 7 of realization adjusting and the distance H at the end of described flanging 8, its adjustable range is good with 150 to 280 millimeters.The adjusting of described height can be decided according to different crop situations, when the seed percentage of impurity of the mouth of putting out cereal is higher, and the position of adjustable low vertical gas flow adjusting flange 7; When the seed percent of loss of air outlet is too high, should heighten the position of uprush adjustable plate 7.

In order to improve the effect that wind-force is cleaned, as shown in Figure 2, gap location below between described

drum sieve

4 and 5,5 and 6 respectively, respectively be provided with a wind direction guide plate 9, the

drum sieve

4,5,6 of itself and fast rotation and seed slide carriage 10 form the clear grain air channel of a sealing, can frivolous assorted surplus blowing out outside the machine, thereby realize improving the purpose that wind-force is cleaned effect to the wind-force air outlet that leads.

Claims

1. the drum sieve cleaning mechanism of a combined harvester, formed by the threshing cylinder [3], blower fan [2], cylinder screen banks, seed slide carriage [10], the uprush adjustable plate [7] that comprise frame [1] and be arranged on the framework lateral plate, described cylinder screen banks is arranged at the below of threshing cylinder [3], being the drum sieve [4], [5], [6] that are arranged in parallel by three is formed, it is characterized in that: described drum sieve [4], [5], [6], form by the square-mesh screen coiling of aperture in 35 to 45 millimeters scopes.

2. by the drum sieve cleaning mechanism of the described combined harvester of claim 1, it is characterized in that: described seed slide carriage [10] is bending, and its angle [11] then is provided with a flanging [8] in addition at its afterbody between 120 ° to 130 °; Its front end is fixed on the outlet lower edge of blower fan [2], both sides then riveted on the sidewall of frame 1.

3. by the drum sieve cleaning mechanism of the described combined harvester of claim 2, it is characterized in that: the angle [12] of described flanging [8] is between 125 ° to 160 °, and height h is then between 100 to 150 millimeters.

4. by the drum sieve cleaning mechanism of claim 1,2 or 3 described combined harvesters, it is characterized in that: the top that is loaded on the uprush adjustable plate [7] on the flanging [8] is provided with a circular arc member [13]; Onboard one group of adjustable installing hole [14] can be set in addition.

5. by the drum sieve cleaning mechanism of the described combined harvester of claim 4, it is characterized in that: the radius of curvature of described circular arc member [13] is between 20 to 25 millimeters.

6. by the drum sieve cleaning mechanism of the described combined harvester of claim 5, it is characterized in that: apart from being adjustable, adjustable range is good between 150 to 280 millimeters at the end for the limit, upper edge of described uprush adjustable plate [7] and described flanging [8].

7. by the drum sieve cleaning mechanism of the described combined harvester of claim 6, it is characterized in that: the below in gap is located between described drum sieve [4] and [5], [5] and [6], respectively is provided with a wind direction guide plate [9].