CN2555602Y - Two-step threshing sorting device for combine matched with walking tractor - Google Patents

Abstract

A grading threshing, separating, cleaning and selecting device used for a combine harvester which matches with a walking tractor belongs to the technical field of a miniature rice and wheat harvesting machine. The utility model increases a first threshing device between the back end of a conveying slot and a second threshing device based on the structure of the prior combine harvester which matches with the walking tractor to form a two-grade threshing and separating device; a corn collecting box is arranged under an upper opening of a screw lifting and conveying conveyer, and the inside of the corn collecting box is provided with a reciprocating sieve plate which is placed as being plane, and the back of the box is provided with a blower; the bottom is provided with a corn outlet, which form a two-grade cleaning and selecting mechanism. The structure can not only obtain enough operating time to improve the technology performance but the threshing loss rate and the corn impurity rate are all reduced. The utility model is especially fit for the farmer who is provided with the walking tractor to purchase for matching as the miniature combine harvester.

Description

Take off with the classification of the combine of walking tractor matching and to distinguish device

Technical field

The utility model relates to small-sized rice wheat harvester technical field, and particularly a kind of classification of combine of and walking tractor matching is taken off and distinguished device.

Background technology

The combine of existing a kind of supporting hand tractor, have only the one-level of cutting and threshing crop to take off the branch device, its structure and operation principle are: under the effect of straw shift wheel 1, crop is through the ceding of Taiwan 2 and change delivery chute 4 over to after cutter 3 cuttings down, the head end of delivering to thrasher 6 again tangentially feeds, the effect lower edge axially-movable of threshing cylinder 6-3 in thrasher 6 and top cover spiral guide plate 6-2, the repeated stock and the rubbing that are subjected to close grid screen banks 6-1 simultaneously carry out threshing.After cereal, clever shell, standing grain clothing, broken grass separate, go into bag by the mouth of a valley that goes out that close grid screen banks 6-1 is separated to flat spin conveyer 8 and elevator auger conveyor 9, referring to shown in Figure 1.But the straw grass then by the tail end of threshing cylinder 6-3 forwards to discharging from straw outlet, promptly finish first separation.Because of type little, the length of threshing cylinder 6-3 is subjected to certain restriction, discharge to the straw grass from entering cylinder general crop cutting back, the activity duration of threshing is less, this operation function is a kind of maturation process for big model combine, and because of its body is big, cereal has enough disengaging times in the threshing separation process, but for the baby combine of walking tractor matching, can't obtain enough activity durations because of body is little.Because the straw grass is many, the time that threshing separates is short, causes in the straw grass of discharge and accompanies grain, and this separation losses is up to 5%, 3% the index that is much higher than that national standard requires.In addition, because above-mentioned existing type does not have the mechanism of screening and selection by winnowing, making cereal separate the back with clever shell, standing grain clothing, broken grass, straw grass just directly packs from the mouth of a valley that goes out of elevator auger conveyor 9, so grain contains assorted many, percentage of impurity is up to more than 10%, because above-mentioned threshing percent of loss and grain percentage of impurity are too high, the peasant household that the has had hand tractor at present lower small harvester of purchasing price of also being unwilling.

Summary of the invention

The technical problems to be solved in the utility model is by setting up threshing and dressing mechanism obtaining enough activity durations, thereby reduces the threshing separation losses, reduces the grain percentage of impurity, improves transaction capabilities.

Technical solution provided by the utility model is such: a kind of classification of combine of and walking tractor matching is taken off and is distinguished device, comprise delivery chute 4, second thrasher 6, flat spin conveyer 8, elevator auger conveyor 9, straw outlet 7, delivery chute 4 rear ends are positioned at second thrasher, 6 tops, second thrasher, 6 below correspondences flat spin conveyer 8 one ends, second thrasher, 6 rear lateral portion are provided with straw outlet 7, flat spin conveyer 8 other ends are connected mutually with elevator auger conveyor 9 lower ends, are provided with first thrasher 5 between described delivery chute 4 rear ends and second thrasher 6; Outlet below, described elevator auger conveyor 9 tops is provided with grain collecting box 12, is provided with the oscillating screen plate 11 that place on the plane in this grain collecting box 12, and its rear portion is provided with hair-dryer 10, and its bottom is provided with out the mouth of a valley.Described first thrasher 5 is made up of the little top cover 5-2 of the first threshing cylinder 5-1, band guide plate, second thrasher 6 is made up of the second threshing cylinder 6-3, top cover spiral guide plate 6-2, close grid screen banks 6-1, and first thrasher 5 and second thrasher 6 are contained in and constitute the two-stage installed threshing separator in the same case.Power source is connected with oscillating screen plate 11 by vibration rod 11-1, constitutes first order dressing mechanism, and hair-dryer 10 air outlets are located at oscillating screen plate 11 belows, and grain collecting box 12 front ends are provided with air outlet, constitutes second level dressing mechanism.

Compared with prior art; the utlity model has following beneficial effect: because prior art has only one-level threshing separating mechanism, grain threshing, separate not thoroughly, a small amount of grain can be entrained with outside the machine with the straw grass; and do not have dressing mechanism, grain packs with standing grain clothing, broken grass.And being the two-stage threshing, separates again the utility model, the opposite direction that the straw grass advances from straw outlet along machine is discharged, more more reasonable than prior art straw grass from the direction discharge that machine advances, adding the two-stage that is provided with screening and selection by winnowing cleans, can not only obtain enough activity durations, improved processing performance, and be more suitable for the baby combine that is restricted in because of supporting hand tractor power type size, its drive path structure distribution is reasonable, obvious effects is threshing percent of loss and the reduction at double of grain percentage of impurity, and efficient height, energy consumption are low.

Description of drawings

Fig. 1 is a kind of combine structural representation front view with workers and peasants-12K walking tractor matching of embodiment of the utility model.

Fig. 2 is the rearview of Fig. 1.

Embodiment

By following embodiment the utility model is further elaborated.

Referring to Fig. 1, present embodiment shown in Figure 2 is a kind of and combine workers and peasants-12K walking tractor matching, adopts two-stage to take off and distinguishes structure.Concrete structure is such: first less thrasher 5 and the second bigger thrasher 6 and the corresponding first threshing cylinder 5-1 and the second threshing cylinder 6-3 constitute the classification threshing, and combination water flat spin conveyer 8, close grid screen banks 6-1, straw outlet 7 constitute two-stage threshing separating mechanism.The outlet of the inlet of first thrasher 5 and delivery chute 4 is joined, straw outlet 7 is located at the tail end rear portion of second thrasher 6, second thrasher, 6 lower half circle are close grid screen banks 6-1, and flat spin conveyer 8 is positioned at close grid screen banks 6-1 below, and are communicated with second thrasher, 6 bottoms.Oscillating screen plate 11 in the grain collecting box 12 carries out the first order to cereal, clever shell, standing grain clothing, broken grass earlier and cleans; Below oscillating screen plate 11, by the air-flow of hair-dryer screening is fallen and is lighter than the standing grain clothing of grain, broken grass blows away, and finishes the second level and cleans, and reduces its grain percentage of impurity greatly.

The power source of hand tractor drives rice pulling wheel 1 through power-transmission system 14 and rotates, changed over to delivery chute 4 by the crop after the ceding of Taiwan 2 and 3 cuttings of following cutter, the inlet of installed threshing separator is fixedlyed connected with the outlet of delivery chute 4, after crop enters into first thrasher 5 by the outlet of delivery chute 4, at the first threshing cylinder 5-1, the scouring abrasion of little top cover is done down to enter second thrasher 6 after the threshing for the first time, for the helical movement under the effect of the second threshing cylinder 6-3 and top cover spiral guide plate 6-2, crop is subjected to threshing once more, separate, its straw grass is under the effect of inertia of the second threshing cylinder 6-3, tangentially behind straw outlet 7 discharge machines.Grain and assorted surplusly enter flat spin conveyer 8 from close grid screen banks 6-1, oscillating screen plate 11 in elevator auger conveyor 9 is delivered to grain collecting box 12 screens, walk bigger assorted surplus clearly, hair-dryer under oscillating screen plate 11 10 blows choosing again, with remaining lighter assorted surplus blowing away, grain flows in the grain bag 13.

Claims (3)

1, a kind of classification of combine of and walking tractor matching is taken off and is distinguished device, comprise delivery chute (4), second thrasher (6), flat spin conveyer (8), elevator auger conveyor (9), straw outlet (7), delivery chute (4) rear end is positioned at second thrasher (6) top, second thrasher (6) below corresponding flat spin conveyer (8) one ends, second thrasher (6) rear lateral portion is provided with straw outlet (7), flat spin conveyer (8) other end is connected mutually with elevator auger conveyor (9) lower end, it is characterized in that: be provided with first thrasher (5) between described delivery chute (4) rear end and second thrasher (6); Outlet below, described elevator auger conveyor (9) top is provided with grain collecting box (12), is provided with the oscillating screen plate (11) that place on the plane in this grain collecting box (12), and its rear portion is provided with hair-dryer (10), and its bottom is provided with out the mouth of a valley.

2, the classification of combine according to claim 1 is taken off and is distinguished device, it is characterized in that: described first thrasher (5) is made up of the little top cover (5-2) of first threshing cylinder (5-1), band guide plate, second thrasher (6) is made up of second threshing cylinder (6-3), top cover spiral guide plate (6-2), close grid screen banks (6-1), and first thrasher (5) and second thrasher (6) are contained in and constitute the two-stage installed threshing separator in the same case.

3, the classification of combine according to claim 1 is taken off and is distinguished device, it is characterized in that: power source is connected with oscillating screen plate (11) by vibration rod (11-1), constitute first order dressing mechanism, hair-dryer (10) air outlet is located at oscillating screen plate (11) below, grain collecting box (12) front end is provided with air outlet, constitutes second level dressing mechanism.