CN2272189Y - Hand-holding type multi-function thresher - Google Patents

Abstract

The utility model relates to a hand-holding type multi-function thresher belonging to an agricultural machine, which is composed of a cover 1, a machine frame 14, a dynamic force transmission mechanism, a threshing cylinder 2, a grain or kernel output mechanism, a sieve 8, and a transmission mechanism for the reciprocating movement of the sieve, wherein the transmission mechanism for the reciprocal motion of the sieve comprises a belt wheel 22 connected with the dynamic force transmission mechanism, a cylindrical cam 23 fixed with the belt wheel 22, a supporting device which can place the cylindrical cam 23 on the machine frame 14, and a traction mechanism connected with the sieve 8, wherein the traction mechanism and the cylindrical cam 23 form a transmission pair. The utility model has the advantages of easy production, operational safety, and realization of uniformly left and right reciprocating movement of the sieve 8 for the transmission mechanism for the reciprocating movement of the sieve does not need changing directions.

Description

The hand-held type multifunctional thresher

The utility model is a kind of hand-held type multifunctional thresher, belongs to agricultural machinery.

At present; has the collection removal of impurities; though clearing function is more welcome in the semi-automatic rice-wheat thresher of one; but because its sieve motion exists certain defective; thereby in actual manufacturing and use, bring many troubles; sieve moves like this; by the belt pulley on the driven by motor drum spindle; be installed in the belt wheel of bearing block one end of frame below then by its drive; the bevel gear that is located at the bearing block other end is rotated; the bevel gear that is arranged on another bearing block one end by this bevel gear and then drive does 90 ° of changed course rotations; thereby reach the eccentric wheel that is installed in the bearing block other end is rotated, drive by the connected sieve of connecting rod reciprocating again.One of so exposed problems, it needs two bearings and bevel-gear sett, complex structure; Two, two power transmission shaft two ends have driving member respectively, and be cantilever force, suffered torsion direction difference, and the axle fixing point only has the pair of bearings on the middle bearing bracket easily causes the flexural deformation of axle and influences use; Three, eccentric wheel is in the process of rotating a circle, the tractive force direction and the sieve direction of motion exist the variation of certain angle, thereby tractive force is subjected to loss to some extent, cause the sieve movement velocity even inadequately.

Task of the present utility model be to provide a kind of simple in structure, easy to manufacture, use reliable, the sieve motion need not change to turn to can directly make sieve make left and right reciprocating hand-held type multifunctional thresher equably.

Task of the present utility model is finished like this; a kind of hand-held type multifunctional thresher; moving back and forth transmission mechanism by lid 1, frame 14, power drive mechanism, threshing cylinder 2, paddy/wheat output mechanism, sieve 8 and sieve forms; sieve moves back and forth a cylindrical cam 23 that transmission mechanism has a trough of belt 33 that 22, one of belt pulleys that is connected with power drive mechanism and belt pulley 22 fix and a draw-gear that can make cylindrical cam 23 place supporting arrangement on the frame 14 and and cylindrical cam 23 formation transmissions and be connected with sieve 8.

Below in conjunction with accompanying drawing the utility model is further described below.

Fig. 1 is the utility model structure chart.

Fig. 2 is that sieve of the present utility model moves back and forth the transmission mechanism structure chart.

Supporting arrangement of the present utility model is made up of axle bed 24, bearing 25,34, fixed axis 35, axle bed 24 is fixed on the frame 14, fixed axis 35 penetrates the center through hole on the cylindrical cam 23, its two end is nested with bearing 25,34 respectively, bearing 25,34 lays respectively at the center through hole two stomidium mouths on the cylindrical cam 23, and fixed axis 35 is fixing by an end and axle bed 24 that it is nested with bearing 25.On cylindrical cam 23, open the hole, fixed axis 35 is inserted this through hole, and at fixed axis 35 2 end rigid bearings 25,34, fixed axis 35 is fixing by an end end and the axle bed 24 of its rigid bearing 25.

Draw-gear of the present utility model is made up of guide pipe 30, draw bar 26, connecting rod 17, little axle 28, roller 27, guide pipe 30 is fixed on the axle bed 24, draw bar 26 middle parts are positioned at guide pipe 30, its end that stretches out is connected with an end of connecting rod 17, the other end of connecting rod 17 is connected with sieve 8, the fixing little axle 28 of its other end that stretches out is provided with roller 27 on the little axle 28, and roller 27 is positioned at the groove 33 on the cylindrical cam 23.

One section opening elongated slot is arranged on the guide pipe 30 of the present utility model, and the groove width of opening elongated slot and little axle 28 match, and flute length and roller 27 match along the distance that groove 33 rolls.

Groove 33 on the cylindrical cam 23 of the present utility model is spiral.Because groove 33 matches with roller 27, so when cylindrical cam 23 rotates, can guarantee that roller 27 is an orbiting motion with groove 33, thereby drive little axle 28, about little axle 28 drive draw bars 26 are in guide pipe 30, move back and forth, the reciprocating amplitude in its left and right sides depends on the rolling distance of roller 27 along the groove on the cylindrical cam 23 33, under the situation of cylindrical cam 23 rotations, roller 27 is rolled to terminal point from the initial point of groove 33, terminal point from groove 33 is rolled into initial point again, under the rolling that goes round and begins again of roller 27, drive little axle 28 and about the opening elongated slot on the guide pipe 30 is done, move back and forth, thereby promote to move back and forth about draw bar 26 is done in guide pipe 30.Thereby this structure setting changed a pair of bevel gear form of original need and changed the situation of rotation direction, moves back and forth transmission mechanism thereby simplified sieve.Roller 27 of the present utility model is set on the little axle 28, and little axle 28 is fixed by hold-down screw 29 and draw bar 26.Draw bar 26 is fixed by a pivot pin 32 and an end of connecting rod 17, the other end of connecting rod 17 and sieve 8 are fixing, and sieve 8 is lived and is located on the screen frame (unit) 9, and screen frame (unit) 9 is fixed on the frame 14, lid 1 is connected on the frame 14, and cylindrical cam 23 is fixing with belt pulley 22 by hold-down screw 31.

Frame 14 of the present utility model is provided with regulating wheel 19, and regulating wheel 19 contacts with the driving-belt 18,16 of power drive mechanism respectively, and its effect is to reach the tightness of regulating driving-belt 18,16, to improve the transmission effect.

Power drive mechanism of the present utility model is made up of motor 6, small belt pulley 7, driving-belt 5, big belt pulley 4, transmission main shaft 21, duplex belt wheel 20, driving-belt 18,16, motor 6 is installed on the frame 14, small belt pulley 7 is installed on the power take-off of motor 6, big belt pulley 4 is installed in an end of transmission main shaft 21, the other end of transmission main shaft 21 is installed duplex belt wheel 20, small belt pulley 7 is connected by driving-belt 5 with big belt pulley 4, transmission main shaft 21 is arranged on the frame 14, and fan blade 3, threshing cylinder 2 are separately positioned on the transmission main shaft 21.Driving-belt 18 is nested with on duplex belt wheel 20 and belt pulley 22, and driving-belt 16 is enclosed within on the multiplying wheel 15 of duplex belt wheel 20 and paddy/wheat output mechanism.

Paddy of the present utility model/wheat output mechanism by stir cage axle 11, impeller 12, multiplying wheel 15, spray tube 10 is formed, stirring cage axle 11 2 ends places on the frame 14, impeller 12 is located at an end end of stirring cage axle 11 and is positioned at spray tube 10, multiplying wheel 15 is contained in and stirs cage axle 11 other end ends, and spray tube 10 is fixing with frame 14.

After the utility model is connected power supply, motor 6 rotates, drive transmission main shaft 21 rotations by driving-belt 5, thereby make threshing cylinder 2, fan blade 3 rotations, drive sieve by transmission main shaft 22 respectively by driving-belt 18,16 simultaneously and move back and forth transmission mechanism and paddy/wheat output mechanism work.When driving-belt 18 drives belt pulley 22 rotations, with the just rotation thereupon of its fixing cylindrical cam 23, because the groove 33 on the cylindrical cam 23 is spiral, thereby make the roller 27 that is positioned on the groove 33 drive little axle 28, draw bar 26, connecting rod 17, sieve 8 motions successively along with the rotation of cylindrical cam 23, make by the paddy under threshing cylinder 2 threshings, wheat after mesh screen 13 drops on the sieve 8, drop down to paddy/wheat output mechanism by sieve 8.Drive multiplying wheel 15 and make in the process of stirring cage axle 11 rotations at transmission mechanism this moment, will throw away spray tube 10 by impeller 12 from the paddy/wheat of sieve 8 and pack.

The utility model has been owing to adopted said structure, thereby makes whole thresher easy to manufacture, uses reliably, and sieve moves back and forth transmission mechanism not to be needed to change and turn to and realized making the sieve 8 can left and right equably reciprocating motion.

Claims (5)

1, a kind of hand-held type multifunctional thresher; moving back and forth transmission mechanism by lid (1), frame (14), power drive mechanism, threshing cylinder (2), paddy/wheat output mechanism, sieve (8) and sieve forms; it is characterized in that sieve moves back and forth transmission mechanism and has a belt pulley that is connected with power drive mechanism (22), cylindrical cam (23) of fixing with belt pulley (22) can make cylindrical cam (23) place the also draw-gear that is connected of same sieve (8) of supporting arrangement on the frame (14) and and cylindrical cam (23) formation transmission with one.

2, hand-held type multifunctional thresher according to claim 1; it is characterized in that supporting arrangement is made up of axle bed (24), bearing (25), (34), fixed axis (35); axle bed (24) is fixed on the frame (14); fixed axis (35) penetrates the center through hole on the cylindrical cam (23); its two end is nested with bearing (25), (34) respectively; bearing (25), (34) lay respectively at the center through hole two stomidium mouths on the cylindrical cam (23), and fixed axis (35) is fixing by an end and axle bed (24) that it is nested with bearing (25).

3; hand-held type multifunctional thresher according to claim 1; it is characterized in that draw-gear is by guide pipe (30); draw bar (26); connecting rod (17); little axle (28); roller (27) is formed; guide pipe (30) is fixed on the axle bed (24); draw bar (26) middle part is positioned at guide pipe (30); its end that stretches out is connected with an end of connecting rod (17); the other end of connecting rod (17) is connected with sieve (8); the fixing little axle of its other end that stretches out (28); on the little axle (28) roller (27) is set, roller (27) is positioned at the groove (33) on the cylindrical cam (23).

4, hand-held type multifunctional thresher according to claim 3 is characterized in that one section opening elongated slot is arranged on the guide pipe (30), and the groove width of opening elongated slot and little axle (28) match, and flute length and roller (27) match along the distance that groove (33) rolls.

5, hand-held type multifunctional thresher according to claim 1 is characterized in that frame (14) is provided with regulating wheel (19), and regulating wheel (19) contacts with driving-belt (18), (16) of power drive mechanism respectively.

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