CN204069722U - Noncircular planetary gear system three-jaw rice seedling transplanter structure - Google Patents
Noncircular planetary gear system three-jaw rice seedling transplanter structure Download PDFInfo
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- CN204069722U CN204069722U CN201420487842.XU CN201420487842U CN204069722U CN 204069722 U CN204069722 U CN 204069722U CN 201420487842 U CN201420487842 U CN 201420487842U CN 204069722 U CN204069722 U CN 204069722U
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Abstract
The utility model discloses noncircular planetary gear system three-jaw rice seedling transplanter structure.The transplanting mechanism of two transplanting arms, the differential seat angle pushing away seedling angle and seedling taking angle generally can only reach 46 °, transplants arm backhaul and easily rewinds rice shoot.Incomplete non-circular gear of the present utility model is fixed in gear-box by jaw flange; Convex Locking arc plate is all connected by pin with incomplete non-circular gear with sun gear buffering arc plate; First planet axle, the second planet axis are connected by pin with a housing of transplanting arm respectively with one end of third planet axle; First recessed Locking arc plate and the first breast wheel buffering arc plate all middle with first non-circular gear are connected by pin, the second recessed Locking arc plate and the second breast wheel cushion that all middle with second non-circular gear of arc plate is connected by pin, the 3rd recessed Locking arc plate and the 3rd breast wheel are cushioned arc plate and be all connected by pin with the 3rd middle non-circular gear.The differential seat angle that the utility model can realize pushing away seedling angle and seedling taking angle reaches 52 °, transplanting efficiency and to get seedling success rate high.
Description
Technical field
The utility model belongs to agricultural mechanical field, relates to transplanting mechanism, is specifically related to a kind of noncircular planetary gear system three-jaw rice seedling transplanter structure.
Background technology
The transplanting of paddy rice is link important in planting process, and current rice transplanting machinery mainly contains rice transplanter, rice seedling thrower and pot seedling cultivation value machine.Rice transplanter adopts blanket seedling, and seedling-slowing stage is longer, hinders root; Rice seedling thrower easily makes that rice shoot lodges, orthostatic is bad; And pot seedling is planted, orthostatic is good, without seedling-slowing stage.
Along with the development of agricultural mechanization, transplanting at a high speed is inexorable trend.The rice seedling transplanter structure of domestic development mostly is bar structure, and operating efficiency is lower, and bar structure is due to self-defect, cannot increase work efficiency further; Although Full-automatic rice transplanter can realize automatic capturing seedling in the market, but transplanting work adopts different mechanisms to resolve into three actions respectively and completes, complex structure, cause damaged seedling rate and miss in seedling setting rate to increase when running speed is higher, operation quality is difficult to ensure; Domestic transplanting mechanism uses two to transplant arm configuration substantially, and the differential seat angle pushing away seedling angle and seedling taking angle generally can only reach 46 °, and definitely dynamic track upright degree is bad, transplants arm backhaul and easily rice shoot is rewinded, and constrains the high speed development of China's rice transplanting.The rice seedling transplanter structure of external introduction is expensive, complex structure, nursery require high, be not suitable for China's Rice Cropping present situation.
Summary of the invention
The utility model is for the deficiencies in the prior art, there is provided a kind of noncircular planetary gear system three-jaw rice seedling transplanter structure, the differential seat angle pushing away seedling angle and seedling taking angle can reach 52 °, transplants operating efficiency and get seedling success rate high, planting effect is better, effectively can realize accurate rice pot seedling ordering and transplant.
The utility model comprises gear-box, incomplete non-circular gear, first jackshaft, second jackshaft, 3rd jackshaft, first planet axle, second planet axis, third planet axle, first middle non-circular gear, second middle non-circular gear, 3rd middle non-circular gear, first planet non-circular gear, second planet non-circular gear, third planet non-circular gear, convex Locking arc plate, first recessed Locking arc plate, second recessed Locking arc plate, 3rd recessed Locking arc plate, sun gear buffering arc plate, first breast wheel buffering arc plate, second breast wheel buffering arc plate, 3rd breast wheel buffering arc plate, eliminate backlash device and transplant arm, described incomplete non-circular gear and jaw flange are fixed, and jaw flange is fixed in gear-box, described convex Locking arc plate is all connected by pin with incomplete non-circular gear with sun gear buffering arc plate, the first described jackshaft, the second jackshaft, the 3rd jackshaft, first planet axle, the second planet axis and third planet axle be arranged in parallel, and two ends are all bearing in gear-box by bearing, first jackshaft, the second jackshaft and the 3rd jackshaft are uniformly distributed along the circumference, first planet axle, the second planet axis and third planet axle are uniformly distributed along the circumference, and one end is all stretched out outside gear-box, are connected respectively with a housing of transplanting arm by pin, described first middle non-circular gear and the first jackshaft are by spline joint, the second middle non-circular gear and the second jackshaft by spline joint, and the 3rd middle non-circular gear and the 3rd jackshaft pass through spline joint, described first planet non-circular gear and first planet axle are by spline joint, and the second planet non-circular gear and the second planet axis are by spline joint, and third planet non-circular gear and third planet axle pass through spline joint, described first recessed Locking arc plate and the first breast wheel buffering arc plate all middle with first non-circular gear are connected by pin, the second recessed Locking arc plate and the second breast wheel cushion that all middle with second non-circular gear of arc plate is connected by pin, the 3rd recessed Locking arc plate and the 3rd breast wheel are cushioned arc plate and be all connected by pin with the 3rd middle non-circular gear, described incomplete non-circular gear engages with two in the first middle non-circular gear, the second middle non-circular gear and the 3rd middle non-circular gear at least simultaneously, first middle non-circular gear engages with first planet non-circular gear, and the second middle non-circular gear engages with the second planet non-circular gear, and third planet non-circular gear engages with the 3rd middle non-circular gear, described convex Locking arc plate and the first recessed Locking arc plate, the second recessed Locking arc plate or the 3rd recessed Locking arc plate frictional drive, described sun gear cushions arc plate and the first breast wheel cushions arc plate, the second breast wheel cushions arc plate or the 3rd breast wheel cushions arc plate frictional drive, described elimination backlash device comprises eliminates backlash cam, fork, fork cap and compression spring, three elimination backlash cams eliminating backlash device pass through spline joint with first planet axle, the second planet axis and third planet axle respectively, and are connected by cam pair with one end of a fork respectively, the other end of three forks all passes through fork hinge with gear-box, and middle part removably connects with a fork cap respectively, one end of three compression springs is all fixed with gear-box, and the other end is nested with respectively on the fork cap of correspondence.
Described gear-box comprises circular casing and case lid, and casing and case lid are fixed; Casing and case lid all offer central shaft installing hole, three jackshaft installing holes and three planet axis installing holes, and casing also offers circumferential three compression spring standing grooves; On the same cross section of casing, the center of circle of central shaft installing hole and the circle center line connecting of corresponding jackshaft installing hole, angle between the center of circle of jackshaft installing hole and the circle center line connecting of corresponding planet axis installing hole are 145 ~ 160 °, and the center of circle of planet axis installing hole and the corresponding line of transplanting arm cusp, angle between the center of circle of planet axis installing hole and the circle center line connecting of corresponding jackshaft installing hole are 40 ~ 60 °; The two ends of the first jackshaft, the second jackshaft and the 3rd jackshaft are separately positioned in casing and a jackshaft installing hole corresponding to case lid; The two ends of first planet axle, the second planet axis and third planet axle are separately positioned in casing and a planet axis installing hole corresponding to case lid; Three compression springs are separately positioned in a compression spring standing groove.
The central angle that described incomplete non-circular gear has toothed portion corresponding is 270 ~ 285 °.
Described convex Locking arc plate and sun gear buffering arc plate are separately positioned on the both sides of incomplete non-circular gear, first recessed Locking arc plate and the first breast wheel buffering arc plate are separately positioned on the both sides of the first middle non-circular gear, second recessed Locking arc plate and the second breast wheel buffering arc plate are separately positioned on the both sides of the second middle non-circular gear, and the 3rd recessed Locking arc plate and the 3rd breast wheel buffering arc plate are separately positioned on the both sides of the 3rd middle non-circular gear.
Described first middle non-circular gear, the second middle non-circular gear are identical with the structure of the 3rd middle non-circular gear, and its pitch curve equation is
wherein,
be the first middle non-circular gear, the second middle non-circular gear or the 3rd middle non-circular gear relatively not exclusively angle that turns over of non-circular gear,
12≤a≤22,0.35≤b≤0.55 ,-0.7≤c≤-0.5,0.8≤d≤1.1; First planet non-circular gear, the second planet non-circular gear are identical with the structure of third planet non-circular gear; First breast wheel buffering arc plate, the second breast wheel buffering arc plate are identical with the 3rd breast wheel buffering arc plate structure; First recessed Locking arc plate, the second recessed Locking arc plate are identical with the structure of the 3rd recessed Locking arc plate.
The collision of described sun gear buffering arc plate is protruding with the first breast wheel cushion arc plate, the second breast wheel cushions arc plate or the 3rd breast wheel cushions the collision projection frictional drive of arc plate.
The rubbing surface of described sun gear buffering arc plate, the first breast wheel buffering arc plate, the second breast wheel buffering arc plate and the 3rd breast wheel buffering arc plate is arc surface; The rubbing surface of described first recessed Locking arc plate, the second recessed Locking arc plate and the 3rd recessed Locking arc plate is arc surface; The rubbing surface of described convex Locking arc plate comprises engaging friction face and exits rubbing surface; Engaging friction face is arc surface, and radian is 62 °; The described rubbing surface that exits is the enveloping surface that the rubbing surface of convex Locking arc plate does the set of curves that pure rolling is formed on the rubbing surface of the first recessed Locking arc plate; Exit central angle corresponding to rubbing surface to equal sun gear buffering arc plate and the first breast wheel and cushion arc plate and start to collide the first breast wheel in frictional drive terminal procedure and cushion the angle that arc plate turns over, value is 12 ~ 24 °.
Described transplanting arm adopts ripe prior art, if application number is the patent of 201110164729.9.
The beneficial effects of the utility model:
The utility model rotates a circle transplanting three times, and the differential seat angle pushing away seedling angle and seedling taking angle can reach 52 °, improves and transplants operating efficiency and get seedling success rate, and planting effect is better, effectively can realize accurate rice pot seedling ordering and transplant; Buffering arc plate greatly reduces gear tooth impact each other when concavo-convex Locking arc plate is separated, and avoids the sudden change that middle non-circular gear and incomplete non-circular gear have just entered gearratio when engaging, improves gear physical life simultaneously; Eliminate the stable engagement that backlash device guarantees duty gear, guarantee to transplant accuracy.
Accompanying drawing explanation
Fig. 1 is overall structure stereogram of the present utility model;
Fig. 2 is overall structure of the present utility model and the movement locus schematic diagram of transplanting arm cusp;
Fig. 3 is the inner body assembling schematic diagram of the utility model middle gear case;
Fig. 4 is an end view of the inner body of the utility model middle gear case and the assembling stereogram of transplanting arm;
Fig. 5 is another end view of the inner body of the utility model middle gear case and the assembling stereogram of transplanting arm;
Fig. 6 is the stereogram of case lid in the utility model;
Fig. 7 is the front view of casing in the utility model;
Fig. 8 is the structural representation of incomplete non-circular gear in the utility model;
Fig. 9 is the schematic diagram of the utility model convexity Locking arc plate;
Figure 10 is the stereogram of transplanting arm in the utility model;
Figure 11 is the inner body structural representation of transplanting arm in the utility model;
Figure 12 is the movement locus figure transplanting the formation of arm cusp in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As Fig. 1, 2, 3, shown in 4 and 5, noncircular planetary gear system three-jaw rice seedling transplanter structure, comprise gear-box, incomplete non-circular gear 4, first jackshaft 30, second jackshaft 26, 3rd jackshaft 28, first planet axle 31, second planet axis 25, third planet axle 29, first middle non-circular gear 5, second middle non-circular gear 10, 3rd middle non-circular gear 16, first planet non-circular gear 8, second planet non-circular gear 13, third planet non-circular gear 18, convex Locking arc plate 14, first recessed Locking arc plate 6, second recessed Locking arc plate 11, 3rd recessed Locking arc plate 15, sun gear buffering arc plate 9, first breast wheel buffering arc plate 7, second breast wheel buffering arc plate 12, 3rd breast wheel buffering arc plate 17, eliminate backlash device and transplant arm 1.Incomplete non-circular gear 4 is fixed with jaw flange 27, and jaw flange 27 is fixed in gear-box; Convex Locking arc plate 14 is all connected by pin with incomplete non-circular gear 4 with sun gear buffering arc plate 9; First jackshaft 30, second jackshaft 26, the 3rd jackshaft 28, first planet axle 31, second planet axis 25 and third planet axle 29 be arranged in parallel, and two ends are all bearing in gear-box by bearing; First jackshaft 30, second jackshaft 26 and the 3rd jackshaft 28 are uniformly distributed along the circumference; First planet axle 31, second planet axis 25 and third planet axle 29 are uniformly distributed along the circumference, and one end is all stretched out outside gear-box, and the housing 34 of transplanting arm respectively with is connected by pin; The pivot of first planet axle 31, second planet axis 25 and third planet axle 29 is 152mm to the corresponding distance L transplanting arm cusp; First middle non-circular gear 5 and the first jackshaft 30 are by spline joint, the second middle non-circular gear 10 and the second jackshaft 26 by spline joint, and the 3rd middle non-circular gear 16 and the 3rd jackshaft 28 pass through spline joint; First planet non-circular gear 8 and first planet axle 31 are by spline joint, and the second planet non-circular gear 13 and the second planet axis 25 are by spline joint, and third planet non-circular gear 18 and third planet axle 29 pass through spline joint; First recessed Locking arc plate 6 is connected by pin with all middle with first non-circular gear 5 of the first breast wheel buffering arc plate 7, second recessed Locking arc plate 11 is connected by pin with all middle with second non-circular gear 10 of the second breast wheel buffering arc plate 12, and the 3rd recessed Locking arc plate 15 is connected by pin with all middle with the 3rd non-circular gear 16 of the 3rd breast wheel buffering arc plate 17; The centre-to-centre spacing of incomplete non-circular gear 4 and the first middle non-circular gear 10 of middle non-circular gear 5, second and the 3rd middle non-circular gear 16 is 57.22mm; Incomplete non-circular gear 4 engages with two in the first middle non-circular gear 10 of middle non-circular gear 5, second and the 3rd middle non-circular gear 16 at least simultaneously; First middle non-circular gear 5 engages with first planet non-circular gear 8, and the second middle non-circular gear 10 engages with the second planet non-circular gear 13, and the 3rd middle non-circular gear 16 engages with third planet non-circular gear 18; First middle non-circular gear 5 is 50.96mm with the middle non-circular gear 10 of first planet non-circular gear 8, second and the second planet non-circular gear 13, the 3rd middle non-circular gear 16 with the centre-to-centre spacing of third planet non-circular gear 18; Convex Locking arc plate 14 and the first recessed Locking arc plate 11 of recessed Locking arc plate 6, second or the 3rd recessed Locking arc plate 15 frictional drive; Sun gear buffering arc plate 9 and the first breast wheel cushion arc plate 7, second breast wheel and cushion arc plate 12 or the 3rd breast wheel cushions arc plate 17 frictional drive; Eliminate backlash device and comprise elimination backlash cam 19, fork 20, fork cap 21, compression spring 23 and fork bearing pin 24; Three elimination backlash cams 19 eliminating backlash device pass through spline joint with first planet axle 31, second planet axis 25 and third planet axle 29 respectively, and are connected by cam pair with one end of a fork 20 respectively; The other end of three forks 20 is all hinged by fork bearing pin 24 with gear-box, and middle part removably connects with a fork cap 21 respectively; One end of three compression springs 23 is all fixed with gear-box, and the other end is nested with respectively on the fork cap 21 of correspondence.
As Fig. 1,2,3, shown in 6 and 7, gear-box comprises circular casing 2-1 and case lid 2-2, casing 2-1 and case lid 2-2 fix; Casing 2-1 and case lid 2-2 all offers central shaft installing hole 2-3, three jackshaft installing hole 2-4 and three planet axis installing hole 2-5, and casing 2-1 also offers circumferential three compression spring standing grooves 22; On the same cross section of casing 2-1, the center of circle of central shaft installing hole 2-3 and the circle center line connecting of corresponding jackshaft installing hole 2-4, included angle X between the center of circle of jackshaft installing hole 2-4 and the circle center line connecting of corresponding planet axis installing hole 2-5 are 150 °, and the center of circle of planet axis installing hole 2-5 and the line of corresponding transplanting arm cusp, angle ψ between the center of circle of planet axis installing hole 2-5 and the circle center line connecting of corresponding jackshaft installing hole 2-4 are 46 °; The two ends of the first jackshaft 30, second jackshaft 26 and the 3rd jackshaft 28 are separately positioned in a jackshaft installing hole 2-4 corresponding to casing 2-1 and case lid 2-2; The two ends of first planet axle 31, second planet axis 25 and third planet axle 29 are separately positioned in casing and a planet axis installing hole 2-5 corresponding to case lid; Three compression springs to be separately positioned in a compression spring standing groove 22.
As shown in Figure 8, the central angle φ that incomplete non-circular gear 4 has toothed portion corresponding is 279 °.
As shown in Figures 4 and 5, convex Locking arc plate 14 and sun gear buffering arc plate 9 are separately positioned on the both sides of incomplete non-circular gear 4, first recessed Locking arc plate 6 and the first breast wheel buffering arc plate 7 are separately positioned on the both sides of the first middle non-circular gear 5, second recessed Locking arc plate 11 and the second breast wheel buffering arc plate 12 are separately positioned on the both sides of the second middle non-circular gear 10, and the 3rd recessed Locking arc plate 15 and the 3rd breast wheel buffering arc plate 17 are separately positioned on the both sides of the 3rd middle non-circular gear 16.
The middle non-circular gear 10 of first middle non-circular gear 5, second is identical with the structure of the 3rd middle non-circular gear 16, and its pitch curve equation is
first planet non-circular gear 8, second planet non-circular gear 13 is identical with the structure of third planet non-circular gear 18; First breast wheel buffering arc plate 7, second breast wheel buffering arc plate 12 is identical with the 3rd breast wheel buffering arc plate 17 structure; The recessed Locking arc plate 11 of first recessed Locking arc plate 6, second is identical with the structure of the 3rd recessed Locking arc plate 15.
As shown in Fig. 3,4 and 5, the collision of sun gear buffering arc plate 9 is protruding cushion arc plate 7, second breast wheel with the first breast wheel and cushions the collision projection frictional drive that arc plate 12 or the 3rd breast wheel cushion arc plate 17, when incomplete non-circular gear 4 starts to be separated with the first middle non-circular gear 5, first recessed Locking arc plate 6 starts frictional drive with convex Locking arc plate 14, and when the first recessed Locking arc plate 6 starts to be separated with convex Locking arc plate 14, the collision projection that sun gear buffering arc plate 6 and the first breast wheel cushion arc plate 7 collides with each other and starts frictional drive; When sun gear buffering arc plate 6 and the first breast wheel cushion arc plate 7 be separated time, incomplete non-circular gear 4 restarts to engage with the first middle non-circular gear 5; The theory of engagement of incomplete non-circular gear 4 and the second middle non-circular gear 10 or the 3rd middle non-circular gear 16 is with the theory of engagement of incomplete non-circular gear 4 and the first middle non-circular gear 5.
As shown in Fig. 4,5 and 9, the rubbing surface of sun gear buffering arc plate 9, first breast wheel buffering arc plate 7, second breast wheel buffering arc plate 12 and the 3rd breast wheel buffering arc plate 17 is arc surface, easy glide during collision, and stability is bad; The rubbing surface of the first recessed Locking arc plate 11 of recessed Locking arc plate 6, second and the 3rd recessed Locking arc plate 15 is arc surface; Therefore, by the facing design of convex Locking arc plate 14 for comprising engaging friction face 14-1 and exit rubbing surface 14-2; Engaging friction face 14-1 is arc surface, and radian δ is 62 °; Exiting rubbing surface 14-2 is the enveloping surface that the rubbing surface of convex Locking arc plate 14 does the set of curves that pure rolling is formed on the rubbing surface of the first recessed Locking arc plate 6; Exit central angle corresponding to rubbing surface 14-2 to equal sun gear buffering arc plate 9 and the first breast wheel and cushion arc plate 7 and start to collide the first breast wheel in frictional drive terminal procedure and cushion the angle θ that arc plate 7 turns over, its value is 22 °; Exit the design of rubbing surface 14-2, can mechanism reliability be increased.
Adopt the transplanting arm be connected with first planet axle 31 so that the operation principle of this noncircular planetary gear system three-jaw rice seedling transplanter structure to be described, all the other two operation principles of transplanting arm are identical:
As Fig. 2,4,5, shown in 10 and 11, the central shaft installing hole 2-3 of gear-box is fixed by pin with the central shaft be bearing in frame, power passes to gear-box by central shaft, and the clockwise direction that driven gear case is pressed around the center of central shaft installing hole 2-3 in Fig. 2 rotates.When the first recessed Locking arc plate 6 and convex Locking arc plate 14 enter engagement, first middle non-circular gear 5 and first planet non-circular gear 8 opposed gear case static, form intermittent movement, transplant cusp slide downward from A of arm 1, engage the stage at the first recessed Locking arc plate 6 with convex Locking arc plate 14, form ABC section and hold seedling track; When the first recessed Locking arc plate 6 is separated with convex Locking arc plate 14, the first middle non-circular gear 5 starts to engage with the toothed portion that has of incomplete non-circular gear 4, and first planet non-circular gear 8 starts to rotate, and transplants arm and pushes away seedling at C point; Push away after seedling completes, transplant arm and start non-uniform movement under gear-box drives, transplant arm cusp and form CE backhaul track and EFA section gets seedling track; Transplanting arm cam 32 is bolted on the casing 2-1 of gear-box, and shift fork 35 is hinged on by declutch shift shaft 39 transplants on arm housing 34; Transplanting arm cam along with gear-box moves with uniform velocity, and transplants arm by first planet axle 31 and do non-at the uniform velocity intermittent movement; Transplant arm cam driven shift fork 35 to rotate around declutch shift shaft 39, shift fork 35 drives seedling-pushing rod 37 relatively to transplant arm housing 34 and slides; First spring leaf 33-1 and the second spring leaf 33-2 mutually closes under the thrust of transplanting rod lateral column 38-2; When transplanting arm cam pressing shift fork, seedling-pushing rod is retracted, and the first spring leaf 33-1 and the second spring leaf 33-2 closes mutually, completes and gets seedling action; When transplanting arm cam 32 and departing from shift fork 35, under the effect of seedling-pushing rod spring 36, seedling-pushing rod 37 is released, and promotes the first spring leaf 33-1 and the second spring leaf 33-2 opens mutually, and transplanting rod catch 38-1 releases rice shoot, completes and pushes away seedling action.Transplant the movement locus 3 of arm cusp as shown in figure 12, seedling taking angle β is 8 °, and pushing away seedling angle α is 60 °, and the differential seat angle pushing away seedling angle α and seedling taking angle β is 52 °; Differential seat angle is larger, then dynamic track during actual transplanting is better, and the differential seat angle pushing away seedling angle α and seedling taking angle β of existing transplanter generally can only reach 46 °, so the planting effect of this noncircular planetary gear system three-jaw rice seedling transplanter structure is better.
Claims (7)
1. noncircular planetary gear system three-jaw rice seedling transplanter structure, comprise gear-box, incomplete non-circular gear, first jackshaft, second jackshaft, 3rd jackshaft, first planet axle, second planet axis, third planet axle, first middle non-circular gear, second middle non-circular gear, 3rd middle non-circular gear, first planet non-circular gear, second planet non-circular gear, third planet non-circular gear, convex Locking arc plate, first recessed Locking arc plate, second recessed Locking arc plate, 3rd recessed Locking arc plate, sun gear buffering arc plate, first breast wheel buffering arc plate, second breast wheel buffering arc plate, 3rd breast wheel buffering arc plate, eliminate backlash device and transplant arm, it is characterized in that:
Described incomplete non-circular gear and jaw flange are fixed, and jaw flange is fixed in gear-box; Described convex Locking arc plate is all connected by pin with incomplete non-circular gear with sun gear buffering arc plate; The first described jackshaft, the second jackshaft, the 3rd jackshaft, first planet axle, the second planet axis and third planet axle be arranged in parallel, and two ends are all bearing in gear-box by bearing; First jackshaft, the second jackshaft and the 3rd jackshaft are uniformly distributed along the circumference; First planet axle, the second planet axis and third planet axle are uniformly distributed along the circumference, and one end is all stretched out outside gear-box, are connected respectively with a housing of transplanting arm by pin; Described first middle non-circular gear and the first jackshaft are by spline joint, the second middle non-circular gear and the second jackshaft by spline joint, and the 3rd middle non-circular gear and the 3rd jackshaft pass through spline joint; Described first planet non-circular gear and first planet axle are by spline joint, and the second planet non-circular gear and the second planet axis are by spline joint, and third planet non-circular gear and third planet axle pass through spline joint; Described first recessed Locking arc plate and the first breast wheel buffering arc plate all middle with first non-circular gear are connected by pin, the second recessed Locking arc plate and the second breast wheel cushion that all middle with second non-circular gear of arc plate is connected by pin, the 3rd recessed Locking arc plate and the 3rd breast wheel are cushioned arc plate and be all connected by pin with the 3rd middle non-circular gear; Described incomplete non-circular gear engages with two in the first middle non-circular gear, the second middle non-circular gear and the 3rd middle non-circular gear at least simultaneously; First middle non-circular gear engages with first planet non-circular gear, and the second middle non-circular gear engages with the second planet non-circular gear, and third planet non-circular gear engages with the 3rd middle non-circular gear; Described convex Locking arc plate and the first recessed Locking arc plate, the second recessed Locking arc plate or the 3rd recessed Locking arc plate frictional drive; Described sun gear cushions arc plate and the first breast wheel cushions arc plate, the second breast wheel cushions arc plate or the 3rd breast wheel cushions arc plate frictional drive; Described elimination backlash device comprises eliminates backlash cam, fork, fork cap and compression spring; Three elimination backlash cams eliminating backlash device pass through spline joint with first planet axle, the second planet axis and third planet axle respectively, and are connected by cam pair with one end of a fork respectively; The other end of three forks all passes through fork hinge with gear-box, and middle part removably connects with a fork cap respectively; One end of three compression springs is all fixed with gear-box, and the other end is nested with respectively on the fork cap of correspondence.
2. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, is characterized in that: described gear-box comprises circular casing and case lid, and casing and case lid are fixed; Casing and case lid all offer central shaft installing hole, three jackshaft installing holes and three planet axis installing holes, and casing also offers circumferential three compression spring standing grooves; On the same cross section of casing, the center of circle of central shaft installing hole and the circle center line connecting of corresponding jackshaft installing hole, angle between the center of circle of jackshaft installing hole and the circle center line connecting of corresponding planet axis installing hole are 145 ~ 160 °, and the center of circle of planet axis installing hole and the corresponding line of transplanting arm cusp, angle between the center of circle of planet axis installing hole and the circle center line connecting of corresponding jackshaft installing hole are 40 ~ 60 °; The two ends of the first jackshaft, the second jackshaft and the 3rd jackshaft are separately positioned in casing and a jackshaft installing hole corresponding to case lid; The two ends of first planet axle, the second planet axis and third planet axle are separately positioned in casing and a planet axis installing hole corresponding to case lid; Three compression springs are separately positioned in a compression spring standing groove.
3. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, is characterized in that: the central angle that described incomplete non-circular gear has toothed portion corresponding is 270 ~ 285 °.
4. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, it is characterized in that: described convex Locking arc plate and sun gear buffering arc plate are separately positioned on the both sides of incomplete non-circular gear, first recessed Locking arc plate and the first breast wheel buffering arc plate are separately positioned on the both sides of the first middle non-circular gear, second recessed Locking arc plate and the second breast wheel buffering arc plate are separately positioned on the both sides of the second middle non-circular gear, and the 3rd recessed Locking arc plate and the 3rd breast wheel buffering arc plate are separately positioned on the both sides of the 3rd middle non-circular gear.
5. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, is characterized in that: the described first middle non-circular gear, the second middle non-circular gear are identical with the structure of the 3rd middle non-circular gear, and its pitch curve equation is
wherein,
be the first middle non-circular gear, the second middle non-circular gear or the 3rd middle non-circular gear relatively not exclusively angle that turns over of non-circular gear,
12≤a≤22,0.35≤b≤0.55 ,-0.7≤c≤-0.5,0.8≤d≤1.1; First planet non-circular gear, the second planet non-circular gear are identical with the structure of third planet non-circular gear; First breast wheel buffering arc plate, the second breast wheel buffering arc plate are identical with the 3rd breast wheel buffering arc plate structure; First recessed Locking arc plate, the second recessed Locking arc plate are identical with the structure of the 3rd recessed Locking arc plate.
6. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, is characterized in that: the collision of described sun gear buffering arc plate is protruding with the first breast wheel cushion arc plate, the second breast wheel cushions arc plate or the 3rd breast wheel cushions the collision projection frictional drive of arc plate.
7. noncircular planetary gear system according to claim 1 three-jaw rice seedling transplanter structure, is characterized in that: the rubbing surface of described sun gear buffering arc plate, the first breast wheel buffering arc plate, the second breast wheel buffering arc plate and the 3rd breast wheel buffering arc plate is arc surface; The rubbing surface of described first recessed Locking arc plate, the second recessed Locking arc plate and the 3rd recessed Locking arc plate is arc surface; The rubbing surface of described convex Locking arc plate comprises engaging friction face and exits rubbing surface; Engaging friction face is arc surface, and radian is 62 °; The described rubbing surface that exits is the enveloping surface that the rubbing surface of convex Locking arc plate does the set of curves that pure rolling is formed on the rubbing surface of the first recessed Locking arc plate; Exit central angle corresponding to rubbing surface to equal sun gear buffering arc plate and the first breast wheel and cushion arc plate and start to collide the first breast wheel in frictional drive terminal procedure and cushion the angle that arc plate turns over, value is 12 ~ 24 °.
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| CN201420487842.XU CN204069722U (en) | 2014-08-27 | 2014-08-27 | Noncircular planetary gear system three-jaw rice seedling transplanter structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104255146A (en) * | 2014-08-27 | 2015-01-07 | 浙江理工大学 | Non-circular gear asteroid three-jaw paddy rice pot seedling transplanting mechanism |
| CN105052326A (en) * | 2015-08-05 | 2015-11-18 | 芜湖县华瑞模具材料经营部 | Transplanting unit and transplanting apparatus |
-
2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104255146A (en) * | 2014-08-27 | 2015-01-07 | 浙江理工大学 | Non-circular gear asteroid three-jaw paddy rice pot seedling transplanting mechanism |
| CN105052326A (en) * | 2015-08-05 | 2015-11-18 | 芜湖县华瑞模具材料经营部 | Transplanting unit and transplanting apparatus |
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