CN102379181A - Non-circular gear-incomplete non-circular gear planetary gear train aperture disk planetary gear train aperture disk seedling picking mechanism - Google Patents
Non-circular gear-incomplete non-circular gear planetary gear train aperture disk planetary gear train aperture disk seedling picking mechanism Download PDFInfo
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- CN102379181A CN102379181A CN2011102709771A CN201110270977A CN102379181A CN 102379181 A CN102379181 A CN 102379181A CN 2011102709771 A CN2011102709771 A CN 2011102709771A CN 201110270977 A CN201110270977 A CN 201110270977A CN 102379181 A CN102379181 A CN 102379181A
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Abstract
The invention discloses a non-circular gear-incomplete non-circular gear planetary gear train aperture disk planetary gear train aperture disk seedling picking mechanism. Power in a sprocket wheel box transmits to a central shaft with one end fixed with a gear case; the gear case is provided with a laterally zygomorphic planetary gear train gear mechanism; an upper planetary shaft and a lower planetary shaft, which are extending out side the gear case, are respectively equipped with a seedling picking arm with a same structure; the incomplete non-circular gear in the gear case is fixed on one side of the sprocket wheel box and engaged with an upper intermediate non-circular gear and a lower intermediate non-circular gear respectively; the upper intermediate non-circular gear and the lower intermediate non-circular gear are engaged with the upper planetary shaft and the lower planetary shaft; the incomplete non-circular gear is fixedly connected with a convex curve-locking coaxially; he upper intermediate non-circular gear and the lower intermediate non-circular gear are respectively fixedly connected with an upper concave curve-locking and a lower concave curve-locking coaxially; the convex curve-locking is cooperated with the upper concave curve-locking and the lower concave curve-locking respectively. According to the invention, a relative center wheel is provided with two groups of planetary gear train gear drive; each group drives a seedling picking arm; and one rotation of the gear case realizes seedling picking twice. The seedling picking mechanism has high operating efficiency, simple structure, small volume, light weight and little vibration.
Description
Technical field
The present invention relates to agricultural machinery, especially relate to a kind of non-circular gear-incomplete non-circular gear planetary gear system cave dish seedling seedling picking mechanism of automatic potted-seedling picking machine.
Background technology
At present, potted tray seedling transplanter both domestic and external all be with automanual be main, semi-automatic potted tray seedling transplanter leans on the artificial seedling of feeding, operating efficiency is not high, when planting speed is higher, leaks seedling, missing seedling rate increases greatly.And automatically potted tray seedling transplanter has and gives seedling automatically, gets seedling, comparatively automation and laborsavingization, high efficiency.Though automatic potted tray seedling transplanter structure relative complex, in today that science and technology is maked rapid progress, automatic potted tray seedling transplanter will be a transplanter main development tendency from now on.If on semi-automatic potted tray seedling transplanter, installing this additional, to overlap automatic cave dish seedling seedling picking mechanism be exactly automatic potted tray seedling transplanter.If soil property softer (like paddy field), this cover mechanism is exactly the full-automatic potted tray seedling transplanter of a cover, is promptly all accomplished by this cover mechanism to the seedling of planting from getting seedling.
Summary of the invention
The purpose of this invention is to provide a kind of non-circular gear-incomplete non-circular gear planetary gear system cave dish seedling seedling picking mechanism, the physical dimension of this mechanism is less relatively, and structure is simple relatively, vibrates also little.
In order to achieve the above object, the technical scheme of the present invention's employing is:
Power in the chain-wheel box is delivered on the sprocket wheel of center through chain by the drive sprocket that is installed on the power transmission shaft; Center sprocket wheel and central shaft are affixed; One end of central shaft is fixed with gear-box; Laterally zygomorphic planet circular system gear mechanism is installed in the gear-box, stretch out be equipped with respectively on the outer upper planet axle of gear-box and the lower planet axle the identical upper transplanting arm of structure and under get the seedling arm; It is characterized in that: the incomplete non-circular gear in gear-box is fixed on a side of chain-wheel box through flange; Not exclusively non-circular gear respectively be packed in upper and lower jackshaft on upper and lower in the middle of non-circular gear be meshed, upper and lower in the middle of non-circular gear respectively be packed in upper and lower planet axle on upper and lower planet non-circular gear be meshed; Not exclusively the lateral surface of non-circular gear is coaxial is connected with protruding locking arc; The lateral surface of non-circular gear is coaxial in the middle of upper and lower is connected with upper and lower recessed locking arc respectively, not exclusively the protruding locking arc on the non-circular gear respectively with upper and lower in the middle of upper and lower recessed locking arc on the non-circular gear match.
Structure 1: described upper transplanting arm with under to get the seedling arm configuration identical, include and get seedling arm housing, cam, shift fork, spring, seedling-pushing rod, left and rightly get the seedling pin, " V " shape pushes away seedling pawl and spring base; Cam is fixed on the outside of gear-box, and spring base and seedling-pushing rod are affixed, and spring housing is in seedling-pushing rod, and shift fork is installed on the axle of getting the seedling arm housing, and an end of shift fork is pressed in the spring base, and the other end of shift fork can contact with cam; When pushing away seedling; Cam is stirred shift fork and is rotated, and by the spring base compression, shift fork also promotes to move downward with the affixed seedling-pushing rod of spring base spring simultaneously under the effect of shift fork; The spring base drive pushes away the seedling pawl with affixed " V " shape of seedling-pushing rod and moves downward; Make the left and right seedling pin of getting open, realize pushing away seedling and fall seedling, prepare for get seedling next time simultaneously; During the folder seedling; Shift fork contacts with cam disengages, and spring reset, reseting procedure medi-spring promote spring base and move upward; Also move upward with the affixed seedling-pushing rod of spring base this moment; The spring base drive pushes away the seedling pawl with affixed " V " shape of seedling-pushing rod and moves upward, and makes the left and right seedling pin of getting clamp, and realizes the folder seedling.
Structure 2: described upper transplanting arm with under to get the seedling arm configuration identical, include and get seedling arm housing, cam, shift fork, spring, seedling-pushing rod, left and rightly get the seedling sheet, " U " shape pushes away seedling pawl and spring base; Cam is fixed on the outside of gear-box, and spring base and seedling-pushing rod are affixed, and spring housing is in seedling-pushing rod, and shift fork is installed on the axle of getting the seedling arm housing, and an end of shift fork is pressed in the spring base, and the other end of shift fork can contact with cam; When pushing away seedling, cam is stirred shift fork and is rotated, and spring is compressed by spring base under the effect of shift fork; Shift fork also promotes to move downward with the affixed seedling-pushing rod of spring base simultaneously; The spring base drive pushes away the seedling pawl with affixed " U " shape of seedling-pushing rod and moves downward, and the left and right seedling sheet of getting resets under the elasticity that self has, and makes that getting the seedling sheet opens; Realization pushes away seedling and falls seedling, prepares for get seedling next time simultaneously; During the folder seedling; Shift fork contacts with cam disengages, and spring reset, reseting procedure medi-spring promote spring base and move upward; Also move upward with the affixed seedling-pushing rod of spring base this moment; The spring base drive pushes away the seedling pawl with affixed " U " shape of seedling-pushing rod and moves upward, and makes the left and right seedling sheet of getting clamp, and realizes the folder seedling.
The common non-circular gear that described upper and lower middle non-circular gear is elliptic gear, Bath main officer of Tibet helical line non-circular gear, sex change elliptic gear or protruding sealing pitch curve; Upper and lower planet non-circular gear and upper and lower middle non-circular gear conjugation engagement; The pitch curve length of non-circular gear equates with the pitch curve length of upper and lower planet non-circular gear in the middle of upper and lower, and has the pairing pitch curve length of toothed portion central angle to equate with incomplete non-circular gear.
Described upper and lower planet non-circular gear and upper and lower middle non-circular gear engagement realize the non-at the uniform velocity transmission of this seedling picking mechanism; Non-circular gear and the not exclusively non-at the uniform velocity intermittently-driving of this mechanism of non-circular gear engagement realization in the middle of upper and lower.
One end of described central shaft is fixed with gear-box, and the transmission system of symmetrical structure up and down is installed in the gear-box; The other end at central shaft is fixed with another gear-box simultaneously, and another transmission system of symmetrical structure up and down is installed in another gear-box.
The beneficial effect that the present invention has is:
Relative centre wheel has two groups of planet circular system gear drives in the gear-box of this seedling picking mechanism, and every group of planetary system gear drive drives one and get the motion of seedling arm, and gear-box turns around, and realizes getting seedling 2 times, and operating efficiency is higher, and is simple in structure, and volume is little, and is in light weight, vibrates little.
Description of drawings
Fig. 1 is a mechanism principle sketch map of the present invention;
Fig. 2 is a transmission principle sketch map of the present invention;
Fig. 3 is a three-dimensional transmission principle sketch map of the present invention;
Fig. 4 is a three-dimensional assembling sketch map of the present invention;
Fig. 5 is a kind of mechanism's location drawing front view when getting seedling arm member clamping seedling of the present invention;
Fig. 6 is a kind of mechanism's location drawing end view when getting seedling arm member clamping seedling of the present invention;
Fig. 7 is the A-A cutaway view of Fig. 6;
Fig. 8 is a kind of mechanism's location drawing front view when getting the seedling arm member and putting seedling of the present invention;
Fig. 9 is a kind of mechanism's location drawing end view when getting the seedling arm member and putting seedling of the present invention.；
Figure 10 is the B-B cutaway view of Fig. 9;
Figure 11 is another kind of the present invention mechanism's location drawing front view when getting seedling arm member clamping seedling;
Figure 12 is another kind of the present invention mechanism's location drawing end view when getting seedling arm member clamping seedling;
Figure 13 be another kind of the present invention get that the seedling arm member adopted post rubber get the seedling sheet;
Figure 14 is another kind of the present invention mechanism's location drawing front view when getting the seedling arm member and putting seedling;
Figure 15 is another kind of the present invention mechanism's location drawing end view when getting the seedling arm member and putting seedling;
Figure 16 is the A-A view of Figure 15;
Figure 17 be mechanism of the present invention get seedling orbiting motion simulation drawing.
Among the figure: 1. lower planet wheel shaft, 2. the lower planet non-circular gear 3. descends jackshaft, 4. time in the middle of non-circular gear, 5. central shaft, 6. incomplete non-circular gear; 7. gear-box is 8. gone up jackshaft, non-circular gear in the middle of 9. going up, 10. upper planet non-circular gear, 11. upper planet wheel shafts, 12. upper transplanting arms; 13. power transmission shaft, 14. fovea superior locking arcs, 15. protruding locking arcs, 16. recessed locking arcs, 17. flanges are got the seedling arm 18. times; 19. the center sprocket wheel, 20. chains, 21. chain-wheel boxs, 22. drive sprockets, 23. pot seedling disks, 24. get the seedling pin; 25. get the seedling sheet, 26. springs, 27. shift forks, 28. cams, 29. seedling-pushing rods, 30. get the seedling pin; 31. get the seedling arm housing, 32. " V " shape pushes away the seedling pawl, 33. spring bases, and 34. get the seedling sheet, and 35. " U " shape pushes away the seedling pawl.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in; Power is delivered on the center sprocket wheel 19 through chain 20 by the drive sprocket 22 that is installed in the chain-wheel box 21 on the power transmission shaft 13; Center sprocket wheel 19 is affixed with central shaft 5; One end of central shaft 5 is fixed with gear-box 7, and laterally zygomorphic planet circular system gear mechanism is installed in the gear-box 7, stretch out be equipped with respectively on the outer upper planet axle 11 of gear-box 7 and the lower planet axle 1 the identical upper transplanting arm of structure 12 and under get seedling arm 18; Incomplete non-circular gear 6 in gear-box 7 is fixed on a side of chain-wheel box 21 through flange 17; Not exclusively non-circular gear 6 respectively be packed in upper and lower jackshaft 8,3 on upper and lower in the middle of non-circular gear 9,4 be meshed, upper and lower in the middle of non-circular gear 9,4 respectively be packed in upper and lower planet axle 11,1 on upper and lower planet non-circular gear 10,2 be meshed; Not exclusively the lateral surface of non-circular gear 6 is coaxial is connected with protruding locking arc 15; The lateral surface of non-circular gear 9,4 is coaxial in the middle of upper and lower is connected with upper and lower recessed locking arc 14,16 respectively, not exclusively the protruding locking arc 15 on the non-circular gear 6 can be respectively with upper and lower in the middle of upper and lower recessed locking arc 14,16 on the non-circular gear 9,4 match.
Like Fig. 5 to shown in Figure 10, described upper transplanting arm 12 with under to get seedling arm 18 structures identical, include spring 26, shift fork 27, cam 28, seedling-pushing rod 29, left and rightly get seedling pin 30,24, get seedling arm housing 31, " V " shape pushes away seedling pawl 32 and spring base 33; Cam 28 is fixed on the outside of gear-box 7; Spring base 33 is affixed with seedling-pushing rod 29, and spring 26 is enclosed within seedling-pushing rod 29, and shift fork 27 is installed on the axle of getting seedling arm housing 31; One end of shift fork 27 is pressed in the spring base 33, and the other end of shift fork 27 can contact with cam 28; When pushing away seedling; Cam 28 is stirred shift fork 27 and is rotated, and by spring base 33 compressions, shift fork 27 also promotes to move downward with spring base 33 affixed seedling-pushing rods 29 spring 26 simultaneously under the effect of shift fork 27; Spring base 33 drives push away seedling pawl 32 with seedling-pushing rod 29 affixed " V " shapes and move downward; Make the left and right seedling pin 30,24 of getting open, realize seedling and push away seedling, prepare for get seedling next time simultaneously; During the folder seedling; Shift fork 27 disengages with cam 28, and spring 26 resets, and reseting procedure medi-spring 26 promotes spring base 33 and moves upward; Also move upward with spring base 33 affixed seedling-pushing rods 29 this moment; Spring base 33 drives push away seedling pawl 32 with seedling-pushing rod 29 affixed " V " shapes and move upward, and make the left and right seedling pin 30,24 of getting clamp, and realize the folder seedling.
Like Figure 11 to shown in Figure 16, described upper transplanting arm 12 with under to get seedling arm 18 structures identical, include spring 26, shift fork 27, cam 28, seedling-pushing rod 29, left and rightly get seedling sheet 34,25, get seedling arm housing 31, " U " shape pushes away seedling pawl 32 and spring base 33; Cam 28 is fixed on the outside of gear-box 7; Spring base 33 is affixed with seedling-pushing rod 29, and spring 26 is enclosed within seedling-pushing rod 29, and shift fork 27 is installed on the axle of getting seedling arm housing 31; One end of shift fork 27 is pressed in the spring base 33, and the other end of shift fork 27 can contact with cam 28; When pushing away seedling, cam 28 is stirred shift fork 27 and is rotated, and spring 26 is compressed by spring base 33 under the effect of shift fork 27; Shift fork 27 also promotes to move downward with spring base 33 affixed seedling-pushing rods 29 simultaneously; Spring base 33 drives push away seedling pawl 32 with seedling-pushing rod 29 affixed " U " shapes and move downward, and the left and right seedling sheet 34,25 of getting resets under the elasticity that self has, and make that getting seedling sheet 34,25 opens; Realize seedling and push away seedling, prepare for get seedling next time simultaneously; During the folder seedling; Shift fork 27 disengages with cam 28, and spring 26 resets, and reseting procedure medi-spring 26 promotes spring base 33 and moves upward; Also move upward with spring base 33 affixed seedling-pushing rods 29 this moment; Spring base 33 drives push away seedling pawl 32 with seedling-pushing rod 29 affixed " U " shapes and move upward, and make the left and right seedling sheet 34,25 of getting clamp, and realize the folder seedling.
As shown in Figure 2, described upper and lower middle non-circular gear the 9, the 4th, the common non-circular gear of elliptic gear, Bath main officer of Tibet helical line non-circular gear, sex change elliptic gear or protruding sealing pitch curve; Upper and lower planet non-circular gear 10,2 and upper and lower middle non-circular gear 9,4 conjugation engagement; The pitch curve length of non-circular gear 9,4 equates with the pitch curve length of upper and lower planet non-circular gear 10,2 in the middle of upper and lower, and has the pairing pitch curve length of toothed portion central angle to equate with incomplete non-circular gear 6.
Described upper and lower planet non-circular gear 10,2 and upper and lower middle non-circular gear 9,4 engagements realize the non-at the uniform velocity transmission of these seedling picking mechanisms; Non-circular gear 9,4 and the not exclusively non-at the uniform velocity intermittently-driving of non-circular gear 6 these mechanisms of engagement realization in the middle of upper and lower.
One end of described central shaft 5 is fixed with gear-box 7, and the transmission system of symmetrical structure up and down is installed in the gear-box 7; The other end at central shaft 5 is fixed with another gear-box simultaneously, and another transmission system (because of structure is identical with operation principle, not drawing among Fig. 1) of symmetrical structure up and down is installed in another gear-box 7.
Like Fig. 1, Fig. 2, shown in Figure 3; Not exclusively non-circular gear 6 centers
and upper and lower middle non-circular gear 9,4 pivots
,
three are on same straight line; Non-circular gear 9,4 and upper and lower planet non-circular gear 10,2 lines
in the middle of upper and lower,
are parallel; Line
,
can turn over certain angle with respect to line
; When gear-box 7 counterclockwise returns when circling around central shaft 5 (promptly getting seedling arm driving shaft); Uplink and downlink spider gear shaft 11,1 relative gear-box 7 is with opposite direction (being clockwise direction) 1 week of revolution; When upper and lower planet non-circular gear 10,2 and upper and lower in the middle of near the speed ratio (pinion ratio) of non-circular gear 9,4 when being in the maximum; Get 30,24 or two on seedling pin for two and get seedling sheet 34,25 entering pot seedling disks 23 clamping seedlings, form and get seedling track A2; At gear-box 7 from the maximum position of speed ratio during to minimum position; Form the seedling claw track A3 of clamping seedling; Get into pot seedling disk 23 these processes from lowest point to the seedling pin at the upper and lower seedling arm 12,18 of getting; Protruding locking arc 15 cooperates with upper and lower recessed locking arc 14,16; The relative gear-box 7 of uplink and downlink spider gear shaft 11,1 does not rotate, and the upper and lower seedling arm 12,18 of getting is along with gear-box 7 rotates around central shaft 5 jointly, form with central shaft 5 be the center make upper and lower get that seedling arm 12,18 rises to pot seedling disk return track A1.Gear-box 7 turns around, and the upper and lower seedling arm 12,18 of getting is got seedling once.Through the parameter of optimizing structure; Make two to get 30,24 or two on seedling pin and get angle and the movement locus requirement that the movement locus of seedling sheet 34,25 cusps satisfies automatic potted-seedling picking mechanism work; Its relative movement orbit of getting seedling pin 30,24 or getting seedling sheet 34,25 cusps is guaranteed reliably carrying out of automatic potted-seedling picking for being similar to the relative movement orbit of " woodpecker " shape.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the input power of automatic potted-seedling picking mechanism is delivered to center sprocket wheel 19 by the drive sprockets 22 in the seedling picking mechanism chain-wheel box 21, and center sprocket wheel 19 and central shaft 5 are connected through key.The annexation of each assembly of automatic potted-seedling picking mechanism: not exclusively non-circular gear 6 is installed on the central shaft 5 through lining; Central shaft 5 axle heads are affixed by spline or square key and gear-box 7; Not exclusively non-circular gear 6 relies on castellated flange 23 to be fixed on the chain-wheel box 21; Not exclusively be connected with protruding locking arc 15 on the non-circular gear 6; Not exclusively the both sides of non-circular gear 6 set gradually upper and lower middle non-circular gear 9,4; The right side of non-circular gear 9,4 has respectively with protruding locking arc 15 and realizes the upper and lower recessed locking arc 14,16 that cooperates in the middle of upper and lower, upper and lower in the middle of non-circular gear 9,4 affixed through upper and lower jackshaft 8,3, mesh with upper and lower planet non-circular gear 10,2 respectively; Upper and lower planet non-circular gear 10,2 and planet wheel spindle 11,1 relies on spline to connect, and the end that uplink and downlink spider gear shaft 11,1 stretches out gear-box 7 is respectively with upper and lower to get seedling arm member 12,18 affixed through key or square shaft.
Operation principle of the present invention is:
Central shaft 5 rotates; Driven gear case 7 rotates; The upper and lower seedling arm member 12,18 of getting is along with upper and lower planet non-circular gear 10,2 relative gear-boxes 7 are done non-ly at the uniform velocity intermittently to rotate, and makes non-circular motion at the uniform velocity intermittently with uplink and downlink spider gear shaft 11,1 around central shaft 5.Through parameter optimization, make that getting 30,24 or two on seedling pin for two gets the requirement that the work track of seedling sheet 34,25 cusps satisfies automatic potted-seedling picking.
Shown in figure 17, be absolute movement track and the relative movement orbit that this mechanism realizes.A gets the quiet track of seedling needle point point for this automatic potted-seedling picking mechanism, the track when promptly machine is not walked, and B is moving track, i.e. get the track of seedling needle point point during machine walking, and C is that the seedling seedling position that falls is coiled in the cave, and D gets seedling pin position when pushing away seedling, and E is the horizon.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (6)
1. the seedling seedling picking mechanism is coiled in non-circular gear-incomplete non-circular gear planetary gear system cave; The power of running part is delivered on the center sprocket wheel (19) through chain (20) by the drive sprocket (22) that is installed in the chain-wheel box (21) on the power transmission shaft (13); Center sprocket wheel (19) is affixed with central shaft (5); One end of central shaft (5) is fixed with gear-box (7); The up and down planet circular system gear mechanism of symmetrical structure is installed in the gear-box (7), stretch out be equipped with respectively on the outer upper planet axle (11) of gear-box (7) and the lower planet axle (1) the identical upper transplanting arm (12) of structure and under get seedling arm (18); It is characterized in that: the incomplete non-circular gear (6) in gear-box (7) is fixed on a side of chain-wheel box (21) through flange (17); Not exclusively non-circular gear (6) respectively be packed in upper and lower jackshaft (8,3) on upper and lower in the middle of non-circular gear (9,4) be meshed, upper and lower in the middle of non-circular gear (9,4) respectively be packed in upper and lower planet axle (11,1) on upper and lower planet non-circular gear (10,2) be meshed; The coaxial protruding locking arc (15) that is connected with of lateral surface of incomplete non-circular gear (6); The coaxial upper and lower recessed locking arc (14,16) that is connected with respectively of lateral surface of non-circular gear (9,4) in the middle of upper and lower, not exclusively the protruding locking arc (15) on the non-circular gear (6) can be respectively with upper and lower in the middle of upper and lower recessed locking arc (14,16) on the non-circular gear (9,4) match.
2. a kind of non-circular gear according to claim 1-not exclusively the seedling seedling picking mechanism is coiled in the non-circular gear planetary gear system cave; It is characterized in that: described upper transplanting arm (12) with under to get seedling arm (18) structure identical, include and get seedling arm housing (31), cam (28), shift fork (27), spring (26), seedling-pushing rod (29), left and rightly get seedling pin (30,24), " V " shape pushes away seedling pawl (32) and spring base (33); Cam (28) is fixed on the outside of gear-box (7); Spring base (33) is affixed with seedling-pushing rod (29); Spring (26) is enclosed within seedling-pushing rod (29); Shift fork (27) is installed on the axle of getting seedling arm housing (31), and an end of shift fork (27) is pressed in the spring base (33), and the other end of shift fork (27) can contact with cam (28); When pushing away seedling; Cam (28) is stirred shift fork (27) and is rotated, and by spring base (33) compression, shift fork (27) also promotes to move downward with the affixed seedling-pushing rod (29) of spring base (33) spring (26) simultaneously under the effect of shift fork (27); Spring base (33) drive pushes away seedling pawl (32) with affixed " V " shape of seedling-pushing rod (29) and moves downward; Make the left and right seedling pin (30,24) of getting open, realize pushing away seedling and fall seedling, prepare for get seedling next time simultaneously; During the folder seedling; Shift fork (27) and cam (28) disengage, and spring (26) resets, and reseting procedure medi-spring (26) promotes spring base (33) and moves upward; Also move upward with the affixed seedling-pushing rod (29) of spring base (33) this moment; Spring base (33) drive pushes away seedling pawl (32) with affixed " V " shape of seedling-pushing rod (29) and moves upward, and makes the left and right seedling pin (30,24) of getting clamp, and realizes the folder seedling.
3. a kind of non-circular gear according to claim 1-not exclusively the seedling seedling picking mechanism is coiled in the non-circular gear planetary gear system cave; It is characterized in that: described upper transplanting arm (12) with under to get seedling arm (18) structure identical, include housing (31), cam (28), shift fork (27), spring (26), seedling-pushing rod (29), left and rightly get seedling sheet (34,25), " U " shape pushes away seedling pawl (32) and spring base (33); Cam (28) is fixed on the outside of gear-box (7); Spring base (33) is affixed with seedling-pushing rod (29); Spring (26) is enclosed within seedling-pushing rod (29); Shift fork (27) is installed on the axle of getting seedling arm housing (31), and an end of shift fork (27) is pressed in the spring base (33), and the other end of shift fork (27) can contact with cam (28); When pushing away seedling, cam (28) is stirred shift fork (27) and is rotated, and spring (26) is compressed by spring base (33) under the effect of shift fork (27); Shift fork (27) also promotes to move downward with the affixed seedling-pushing rod (29) of spring base (33) simultaneously; Spring base (33) drive pushes away seedling pawl (32) with affixed " U " shape of seedling-pushing rod (29) and moves downward, and the left and right seedling sheet (34,25) of getting resets under the elasticity that self has, and makes that getting seedling sheet (34,25) opens; Realization pushes away seedling and falls seedling, prepares for get seedling next time simultaneously; During the folder seedling; Shift fork (27) and cam (28) disengage, and spring (26) resets, and reseting procedure medi-spring (26) promotes spring base (33) and moves upward; Also move upward with the affixed seedling-pushing rod (29) of spring base (33) this moment; Spring base (33) drive pushes away seedling pawl (32) with affixed " U " shape of seedling-pushing rod (29) and moves upward, and makes the left and right seedling sheet (34,25) of getting clamp, and realizes the folder seedling.
4. a kind of non-circular gear according to claim 1-not exclusively the seedling seedling picking mechanism is coiled in the non-circular gear planetary gear system cave, it is characterized in that: described upper and lower middle non-circular gear (9,4) is the common non-circular gear of elliptic gear, Bath main officer of Tibet helical line non-circular gear, sex change elliptic gear or protruding sealing pitch curve; Upper and lower planet non-circular gear (10,2) and upper and lower middle non-circular gear (9,4) conjugation engagement; The pitch curve length of non-circular gear (9,4) equates with the pitch curve length of upper and lower planet non-circular gear (10,2) in the middle of upper and lower, and has the pairing pitch curve length of toothed portion central angle to equate with incomplete non-circular gear (6).
5. a kind of non-circular gear according to claim 1-not exclusively the seedling seedling picking mechanism is coiled in the non-circular gear planetary gear system cave, it is characterized in that: described upper and lower planet non-circular gear (10,2) meshes the non-at the uniform velocity transmission that realizes this seedling picking mechanism with upper and lower middle non-circular gear (9,4); Non-circular gear (9,4) and the not exclusively non-at the uniform velocity intermittently-driving of this mechanism of non-circular gear (6) engagement realization in the middle of upper and lower.
6. a kind of non-circular gear according to claim 1-not exclusively the seedling seedling picking mechanism is coiled in the non-circular gear planetary gear system cave; It is characterized in that: an end of described central shaft (5) is fixed with gear-box (7), and the planet circular system gear mechanism of symmetrical structure up and down is installed in the gear-box (7); The other end at central shaft (5) is fixed with another gear-box simultaneously, and another planet circular system gear mechanism of symmetrical structure up and down is installed in another gear-box (7).
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