CN110663322B - Seedling sowing linkage device of rice seedling sowing machine - Google Patents
Seedling sowing linkage device of rice seedling sowing machine Download PDFInfo
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- CN110663322B CN110663322B CN201911021390.XA CN201911021390A CN110663322B CN 110663322 B CN110663322 B CN 110663322B CN 201911021390 A CN201911021390 A CN 201911021390A CN 110663322 B CN110663322 B CN 110663322B
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- 238000009331 sowing Methods 0.000 title claims abstract description 48
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 31
- 235000009566 rice Nutrition 0.000 title claims abstract description 31
- 240000007594 Oryza sativa Species 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 170
- 230000007246 mechanism Effects 0.000 claims abstract description 131
- 238000006073 displacement reaction Methods 0.000 claims abstract description 59
- 230000007704 transition Effects 0.000 claims description 68
- 241000209094 Oryza Species 0.000 claims description 29
- 230000033001 locomotion Effects 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008653 root damage Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/003—Transplanting machines for aquatic plants; for planting underwater, e.g. rice
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C11/00—Transplanting machines
- A01C11/006—Other parts or details or planting machines
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a seedling sowing linkage device of a rice seedling sowing machine, which comprises a main power mechanism, a seedling ejecting assembly, a telescopic seedling ejecting linkage mechanism and a longitudinal displacement linkage mechanism; the longitudinal displacement linkage mechanism comprises a power driving mechanism and a power transmission mechanism; the power driving mechanism comprises a driving bevel gear, two driven bevel gears and a power transmission rod, wherein the driving bevel gear is connected with a turntable power source, the two driven bevel gears are arranged on the power transmission rod and are respectively positioned at two sides of the driving bevel gear and are in matched connection with the driving bevel gear, the driving bevel gear is an incomplete gear, and when the driving bevel gear is meshed with one driven bevel gear, the other driven bevel gear is separated from the driving bevel gear; the power transmission mechanism comprises a transmission gear and a transmission rack which are arranged on the power transmission rod, and the transmission rack is connected with the seedling ejection assembly. The invention has convenient installation, reduces the installation difficulty and is not easy to be blocked.
Description
Technical Field
The invention relates to a rice seedling planter, in particular to a seedling planter linkage device of the rice seedling planter.
Background
Currently, known rice planting machines are mainly divided into two categories: the first type is a traditional transplanter for transplanting in separate pockets based on tearing and cutting blanket-shaped seedling roots by a mechanical arm (seedling claw); the second type is a novel seedling planting machine based on a pot tray seedling raising belt disc with soil planting. The first type of rice planting machine is mature in technology, high planting efficiency is achieved through high-frequency driving of an engine, the defects are root injury, seedlings need to be in a longer green-turning period after planting, because the power required by seedling root tearing and seedling transplanting and mud entering operation is high, the mechanical material strength requirement is high, and the mechanism is generally heavy, the consumable energy consumption cost is high, and the operation in hilly rice areas is inconvenient. The second type of rice planting machine has the advantages of pre-carrying soil, no reviving period after planting, and accurate and controllable seedling number per pocket, is suitable for planting more seedlings (such as Chang Guidao) and less seedlings (such as hybrid rice), and is particularly suitable for operation in hilly rice areas.
For the second type of rice planting machine, the invention patent with the application publication number of CN109362295A discloses an improved light-simple array seedling planter, and a movable driving mechanism in the seedling planter comprises a first pushing member and a stepping driving mechanism for driving the first pushing member to perform stepping switching movement, so that a seedling-pushing needle support performs stepping switching movement along with the seedling-pushing needle support, and seedling-pushing needles are switched between corresponding grids of a grid seedling tray. However, since the step driving mechanism mainly comprises an incomplete gear and an upper rack and a lower rack arranged above and below the incomplete gear, the incomplete gear needs to be meshed with the upper rack or the lower rack just during installation, and meanwhile, the incomplete gear needs to be meshed with another rack immediately after leaving one rack during operation, so that the seedling-lifting needle support can realize timely reversing movement. Therefore, there is a need for a seedling-sowing linkage that is easy to install and that operates smoothly.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a seedling sowing linkage device of a rice seedling sowing machine, which is convenient to install, reduces the installation difficulty and is not easy to be blocked.
The aim of the invention is achieved by the following technical scheme:
a seedling-sowing linkage device of a rice seedling-sowing machine comprises a main power mechanism, a seedling-sowing component, a telescopic seedling-sowing linkage mechanism for driving the seedling-sowing component to perform telescopic seedling-sowing task and a longitudinal displacement linkage mechanism for driving the seedling-sowing component to perform longitudinal and horizontal switching movement between grids of a grid seedling tray; the longitudinal displacement linkage mechanism is characterized by comprising a power driving mechanism and a power transmission mechanism; the power driving mechanism comprises a driving bevel gear, two driven bevel gears and a power transmission rod, wherein the two driven bevel gears are arranged on the power transmission rod, are respectively positioned at two sides of the driving bevel gear and are in matched connection with the driving bevel gear, the driving bevel gear is an incomplete gear, and when the driving bevel gear is meshed with one driven bevel gear, the other driven bevel gear is separated from the driving bevel gear; the power transmission mechanism comprises a transmission gear arranged on the power transmission rod and a transmission rack matched and connected with the transmission gear, and the transmission rack is connected with the seedling ejection assembly;
the main power mechanism comprises a main power shaft, a seedling ejection power transmission mechanism and a longitudinal displacement transmission mechanism, and the main power shaft is connected with a turntable of the rice seedling planter; the seedling lifting power transmission mechanism comprises a first incomplete gear and a seedling lifting transmission gear, wherein the seedling lifting transmission gear is meshed with the first incomplete gear, and the seedling lifting transmission gear is connected with the telescopic seedling lifting linkage mechanism through a seedling lifting transmission assembly;
the longitudinal displacement transmission mechanism comprises a second incomplete gear and a longitudinal displacement transmission gear, the second incomplete gear is arranged on the main power shaft, the longitudinal displacement transmission gear is in meshed matching arrangement with the second incomplete gear, and the longitudinal displacement transmission gear is connected with the driving bevel gear through a longitudinal displacement transmission assembly.
In a preferred embodiment of the present invention, the longitudinal displacement linkage further includes a longitudinal moving member, one end of which is connected to the conveying rack, and the other end of which is connected to the seedling lifting assembly. Through the arrangement of the longitudinal moving part, the length of the conveying rack can be shortened, the cost is reduced, the transition connection between the conveying rack and the seedling lifting assembly can be well completed, and the structure is simple.
According to a preferred scheme of the invention, the seedling-pushing needle assembly comprises a plurality of seedling-pushing needles and a fixing piece for fixing the seedling-pushing needles, the seedling-pushing needles are arranged on the fixing piece in a straight line at equal intervals, when one seedling-pushing needle faces against one grid in the grid seedling tray, other seedling-pushing needles face against the corresponding grid, one end of each seedling-pushing needle is a fixed end for being connected with the fixing piece, the other end of each seedling-pushing needle is a free end for pushing seedlings, the fixing piece is connected with the frame through a sliding structure, and the telescopic seedling-pushing linkage mechanism is connected with the fixing piece.
Preferably, the telescopic seedling-lifting linkage mechanism comprises a reciprocating driving frame, a third incomplete gear and a seedling-lifting gear shaft for driving the third incomplete gear to rotate; the reciprocating driving frame comprises an upper rack and a lower rack which are arranged in parallel, the upper rack and the lower rack are connected together through a connecting piece, and the third incomplete gear is arranged between the upper rack and the lower rack; the reciprocating driving frame is connected with the fixing piece, and the seedling ejection gear shaft is connected with the seedling ejection transmission gear.
Preferably, the reciprocating driving frames and the third incomplete gears are two groups, and the reciprocating driving frames of each group of reciprocating driving frames are arranged in one-to-one correspondence with the third incomplete gears of each group of third incomplete gears; two groups of third incomplete gears are arranged on the seedling-lifting gear shaft; the seedling lifting assemblies are provided with two groups and are oppositely arranged on the frame, and the two groups of reciprocating driving frames are respectively connected with the fixing pieces of the two groups of seedling lifting assemblies. The directions of the two third incomplete gears are adjusted, specifically, when one third incomplete gear is meshed with the upper rack of the corresponding reciprocating driving frame, the other third incomplete gear is meshed with the lower rack of the corresponding reciprocating driving frame; at this time, when the seedling-lifting gear shaft rotates, each group of reciprocating driving frames can do reverse reciprocating motion under the drive of the corresponding third incomplete gear, so that two oppositely arranged grid seedling trays can be simultaneously lifted under the condition of one-step driving, quick seedling sowing is realized, and the seedling sowing efficiency is improved.
Preferably, the two power transmission mechanisms are arranged, the transmission gear of each power transmission mechanism is arranged on the power transmission rod, and the transmission racks of the two power transmission mechanisms are respectively connected with the fixing pieces of the two seedling ejection assemblies. Two power transmission mechanisms are arranged, so that the two groups of seedling ejection assemblies can be driven better.
In a preferred scheme of the invention, the seedling-lifting transmission assembly consists of a toothed chain transmission mechanism; the seedling-lifting power transmission mechanism further comprises a first intermediate rod, and the seedling-lifting transmission gear is arranged on the first intermediate rod; the toothed chain transmission mechanism comprises a first transition gear, a second transition gear and a transition chain, wherein the first transition gear is arranged on the first intermediate rod, the second transition gear is arranged on the seedling pushing gear shaft, and the transition chain is arranged on the first transition gear and the second transition gear in a surrounding mode. The toothed chain transmission mechanism is adopted to realize the power transmission between the seedling-lifting power transmission mechanism and the telescopic seedling-lifting linkage mechanism, and the structure is simple; in addition, the toothed chain transmission mechanism is adopted, so that different distances between the seedling-lifting power transmission mechanism and the telescopic seedling-lifting linkage mechanism can be adapted to be adjusted, the layout design of the seedling-sowing mechanism is facilitated, and particularly compared with direct gear transmission, the toothed chain transmission mechanism can save space and is not influenced by space and distance.
Preferably, the toothed chain transmission mechanism has two groups, the first transition gears of the toothed chain transmission mechanism of the two groups are all arranged on the first intermediate rod, and the second transition gears are respectively arranged on two sides of the first intermediate rod. By arranging two groups of toothed chain transmission mechanisms, two seedling-ejecting gear shafts can be driven to rotate simultaneously, so that a plurality of seedling-ejecting works are realized, and seedling-ejecting efficiency is improved.
In a preferred embodiment of the present invention, the longitudinal displacement transmission mechanism further includes a second intermediate lever, and the longitudinal displacement transmission gear is disposed on the second intermediate lever; the longitudinal displacement transmission assembly comprises a third transition gear and a fourth transition gear, the third transition gear is arranged on the second intermediate rod, the fourth transition gear is connected with the third transition gear in a meshed mode, and a transition transmission shaft is arranged between the fourth transition gear and the drive bevel gear. By arranging the longitudinal displacement transmission assembly, the drive bevel gear is driven, so that the transverse movement driving of the seedling lifting assembly is realized; the transmission of the gears is adopted, so that the connection between the transition transmission shaft and the drive bevel gear is facilitated, and the structure is simple; in addition, through the cooperation of third transition gear and fourth transition gear, can set up the vertical displacement link gear in tooth chain drive mechanism's below, stagger the position of both, make full use of space rationally to can avoid interfering.
Preferably, the second intermediate lever is arranged below the turntable of the rice seedling planter, and the transition transmission shaft is arranged below the second intermediate lever. Therefore, the longitudinal displacement linkage mechanism can be positioned below the turntable, is beneficial to being staggered with the telescopic seedling-lifting linkage mechanism and the seedling-lifting transmission assembly in the vertical direction, avoids interference of the telescopic seedling-lifting linkage mechanism and the seedling-lifting transmission assembly, and can fully and reasonably utilize the space of the seedling planter.
Compared with the prior art, the invention has the following beneficial effects:
1. the power driving mechanism in the longitudinal displacement linkage mechanism adopts a bevel gear matching mode to realize the positive and negative rotation of the power transmission rod, thereby realizing the reciprocating motion of the seedling ejection assembly and having simple structure.
2. The power driving mechanism adopts a matching mode of the bevel gears, so that the installation is convenient, and the installation difficulty of the bevel gears is effectively reduced compared with that of an incomplete rack and pinion reciprocating driving mode; and the drive bevel gear can realize reciprocating stepping displacement without reversing and step-out when in meshing conversion between the two driven bevel gears, is not easy to be blocked, ensures the normal operation of the rice seedling planter, and is convenient to maintain.
3. Under the drive of a power source (rotary table), the invention realizes intermittent replacement work of transverse expansion seedling poking of the seedling ejection rod and longitudinal displacement of the seedling ejection rod by utilizing the cooperation of the first incomplete gear and the second incomplete gear, has ingenious design and simple structure.
Drawings
Fig. 1 is a schematic perspective view of one embodiment of a seedling-sowing linkage of a rice seedling-sowing machine according to the present invention.
Fig. 2 is an enlarged view of a portion of the seedling raising assembly and longitudinal displacement linkage of fig. 1.
Fig. 3 is a schematic perspective view of a longitudinal displacement linkage.
Fig. 4 is a schematic perspective view of a power driving mechanism.
Detailed Description
The invention is further described below with reference to examples and figures, but embodiments of the invention are not limited thereto.
Referring to fig. 1-4, the seedling-sowing linkage device of the rice seedling-sowing machine comprises a general power mechanism, a seedling-sowing component, a telescopic seedling-sowing linkage mechanism for driving the seedling-sowing component to perform telescopic seedling-sowing task, and a longitudinal displacement linkage mechanism for driving the seedling-sowing component to perform longitudinal and horizontal switching movement between grids of a grid seedling tray; the longitudinal displacement linkage mechanism comprises a power driving mechanism and a power transmission mechanism; the power driving mechanism comprises a drive bevel gear 9, two driven bevel gears 10 and a power transmission rod 11, wherein the two driven bevel gears 10 are arranged on the power transmission rod 11 and are respectively positioned at two sides of the drive bevel gear 9 and are in matched connection with the drive bevel gear 9, the drive bevel gear 9 is an incomplete gear, and when the drive bevel gear 9 is meshed with one of the driven bevel gears 10, the other driven bevel gear 10 is separated from the drive bevel gear 9; the power transmission mechanism comprises a transmission gear 13 arranged on the power transmission rod 11 and a transmission rack 12 which is matched and connected with the transmission gear 13, and the transmission rack 12 is connected with the seedling lifting assembly.
The main power mechanism comprises a main power shaft 2, a seedling ejection power transmission mechanism and a longitudinal displacement transmission mechanism, wherein the main power shaft 2 is connected with a turntable 1 of the rice seedling sowing mechanism; the seedling lifting power transmission mechanism comprises a first incomplete gear 3 and a seedling lifting transmission gear 16, wherein the seedling lifting transmission gear 16 is meshed with the first incomplete gear 3, and the seedling lifting transmission gear 16 is connected with the telescopic seedling lifting linkage mechanism through a seedling lifting transmission assembly;
the longitudinal displacement transmission mechanism comprises a second incomplete gear 7 and a longitudinal displacement transmission gear 6, the second incomplete gear 7 is arranged on the main power shaft 2, the longitudinal displacement transmission gear 6 is in meshed matching arrangement with the second incomplete gear 7, and the longitudinal displacement transmission gear 6 is connected with the driving bevel gear 9 through a longitudinal displacement transmission assembly.
Referring to fig. 2-3, the longitudinal displacement linkage also includes a longitudinal displacement member 14, one end of the longitudinal displacement member 14 is connected to the conveying rack 12, and the other end is connected to the seedling raising assembly. By means of the longitudinal moving part 14, the length of the conveying rack 12 can be shortened, the cost is reduced, the transition connection between the conveying rack 12 and the seedling lifting assembly can be well completed, and the structure is simple.
Referring to fig. 1 and 2, the seedling-lifting needle assembly comprises a plurality of seedling-lifting needles and a fixing piece for fixing the seedling-lifting needles, wherein the seedling-lifting needles are arranged on the fixing piece in a straight line at equal intervals, when one seedling-lifting needle faces against one grid in the grid seedling tray, other seedling-lifting needles face against the corresponding grid, one end of each seedling-lifting needle is a fixed end for being connected with the fixing piece, the other end of each seedling-lifting needle is a free end for lifting seedlings, the fixing piece is connected with the frame through a sliding structure, and the telescopic seedling-lifting linkage mechanism is connected with the fixing piece.
Referring to fig. 2, the telescopic seedling-lifting linkage mechanism comprises a reciprocating driving frame 26, a first incomplete gear and a seedling-lifting gear shaft 20 for driving the first incomplete gear to rotate; wherein the reciprocating driving frame 26 comprises an upper rack and a lower rack which are arranged in parallel, the upper rack and the lower rack are connected together through a connecting piece, and the first incomplete gear is arranged between the upper rack and the lower rack; the reciprocating driving frame 26 is connected with the fixing piece, and the seedling-lifting gear shaft 20 is connected with a turntable power source.
Referring to fig. 2, the reciprocating driving frame 26 and the third incomplete gear have two groups, and the reciprocating driving frame 26 of each group of reciprocating driving frame 26 is arranged in one-to-one correspondence with the third incomplete gear of each group of third incomplete gear; two groups of third incomplete gears are arranged on the seedling-lifting gear shaft 20; the seedling ejecting assemblies are provided with two groups and are oppositely arranged on the frame, and the two groups of reciprocating driving frames 26 are respectively connected with the fixing pieces of the two groups of seedling ejecting assemblies. By adjusting the direction of the two third incomplete gears, specifically, when one of the third incomplete gears is meshed with the upper rack of the corresponding reciprocating drive frame 26, the other third incomplete gear is meshed with the lower rack of the corresponding reciprocating drive frame 26; at this time, when the seedling-lifting gear shaft 20 rotates, each group of reciprocating driving frames 26 can do reverse reciprocating motion under the driving of the corresponding third incomplete gear, so that two oppositely arranged grid seedling trays can be simultaneously lifted under the condition of one-step driving, quick seedling sowing is realized, and the seedling sowing efficiency is improved.
Referring to fig. 2 and 3, the power transmission mechanisms are two, the transmission gears 13 of each power transmission mechanism are arranged on the power transmission rod 11, the transmission racks 12 of the two power transmission mechanisms are provided with longitudinal moving members 14, and the longitudinal moving members 14 on the two transmission racks 12 are respectively connected with the fixing members of the two seedling lifting assemblies. Two power transmission mechanisms are arranged, so that the two groups of seedling ejection assemblies can be driven better.
The seedling-lifting assembly and the telescopic seedling-lifting linkage mechanism of the embodiment can be referred to a seedling-lifting needle assembly and a telescopic driving mechanism in an improved light and simple array seedling-sowing machine according to the invention patent application with the application publication number of CN 109362295A.
Referring to fig. 2, the seedling-lifting transmission assembly is composed of a toothed chain transmission mechanism; the seedling-lifting power transmission mechanism further comprises a first intermediate rod 17, and the seedling-lifting transmission gear 16 is arranged on the first intermediate rod 17; the toothed chain transmission mechanism comprises a first transition gear 15, a second transition gear and a transition chain 19, wherein the first transition gear 15 is arranged on the first intermediate rod 17, the second transition gear is arranged on the seedling-lifting gear shaft 20, and the transition chain 19 is arranged on the first transition gear 15 and the second transition gear in a surrounding mode. The toothed chain transmission mechanism is adopted to realize the power transmission between the seedling-lifting power transmission mechanism and the telescopic seedling-lifting linkage mechanism, and the structure is simple; in addition, the toothed chain transmission mechanism is adopted, so that different distances between the seedling-lifting power transmission mechanism and the telescopic seedling-lifting linkage mechanism can be adapted to be adjusted, the layout design of the seedling-sowing mechanism is facilitated, and particularly compared with direct gear transmission, the toothed chain transmission mechanism can save space and is not influenced by space and distance.
Referring to fig. 2, the toothed chain transmission mechanism has two groups, the first transition gears 15 of the toothed chain transmission mechanism of the two groups are all arranged on the first intermediate lever 17, and the second transition gears are respectively arranged on two sides of the first intermediate lever 17. By arranging two groups of toothed chain transmission mechanisms, two seedling-ejecting gear shafts 20 can be driven to rotate simultaneously, a plurality of seedling-ejecting works are realized, and seedling-ejecting efficiency is improved.
Referring to fig. 2, the longitudinal displacement transmission mechanism further includes a second intermediate lever 18, and the longitudinal displacement transmission gear 6 is disposed on the second intermediate lever 18; the longitudinal displacement transmission assembly comprises a third transition gear 4 and a fourth transition gear 5, the third transition gear 4 is arranged on the second intermediate rod 18, the fourth transition gear 5 is in meshed connection with the third transition gear 4, and a transition transmission shaft 8 is arranged between the fourth transition gear 5 and the drive bevel gear 9. By arranging the longitudinal displacement transmission assembly, the drive bevel gear 9 is driven, so that the transverse movement drive of the seedling lifting assembly is realized; the transmission of gears is adopted, so that the connection between the transition transmission shaft 8 and the drive bevel gear 9 is facilitated, and the structure is simple; in addition, through the cooperation of third transition gear 4 and fourth transition gear 5, can set up the vertical displacement link gear in tooth chain drive mechanism's below, stagger the position of both, make full use of space rationally to can avoid interfering.
Referring to fig. 2, the second intermediate lever 18 is disposed below the turntable 1 of the rice seedling planter, and the transitional drive shaft 8 is disposed below the second intermediate lever 18. Therefore, the longitudinal displacement linkage mechanism can be positioned below the turntable 1, so that the telescopic seedling-lifting linkage mechanism and the seedling-lifting transmission assembly are staggered in the vertical direction, interference of the telescopic seedling-lifting linkage mechanism and the seedling-lifting transmission assembly is avoided, and the space of the seedling planter can be fully and reasonably utilized.
Referring to fig. 3, the longitudinal mover 14 includes a transition piece 21 and a supporter; the number of the transition pieces 21 is two, and the two transition pieces 21 are respectively connected with two conveying racks; the support comprises two support rods 23 which are oppositely arranged and a connecting rod 24, wherein the connecting rod 24 is arranged between the two support rods 23 and is positioned at the end parts of the two support rods 23; the two transition pieces 21 are connected to the connecting rod 24. By providing such a longitudinal displacement member 14, connection with two transfer racks of two sets of power transfer mechanisms is facilitated, and in addition, by providing such a support member, connection with a seedling raising assembly is facilitated.
Referring to fig. 3, the support member is provided with a longitudinal rail 22, and the longitudinal rail 22 is disposed on two support rods 23 and perpendicular to the two support rods 23. The longitudinal guide rail 22 is arranged and can be matched with the sliding block of the fixing piece on the seedling lifting assembly, so that the seedling lifting assembly is guided; on the other hand, the longitudinal guide rail 22 and the supporting rod 23 are vertically arranged, so that the movement of the seedling lifting assembly can be pushed under the action of the longitudinal guide rail 22 while the supporting piece transversely moves, the design is ingenious, and the structure is simple.
Referring to fig. 3, a transverse guiding mechanism is arranged between the bottom of the supporting rod 23 and the frame, the transverse guiding mechanism comprises a transverse guide rail and a transverse sliding block 25, the transverse guide rail is arranged on the frame, and the transverse sliding block 25 is arranged at the bottom of the supporting rod. Through the setting of transverse guiding mechanism, improve the mobility stability of whole transverse movement frame, be favorable to improving the moving accuracy.
Referring to fig. 1 to 4, the working principle of the seedling-sowing linkage device of the rice seedling-sowing machine of the embodiment is as follows:
during operation, the rotary table 1 of the rice seedling planter is driven to rotate for one circle by a power mechanism such as a manual or motor, and in the process of rotating the rotary table 1 for one circle (the following description of the transverse and longitudinal directions are all specified by the view angle of operators):
first, the first incomplete gear 3 and the second incomplete gear 7 arranged on the main power shaft 2 rotate, at this time, the gear teeth on the first incomplete gear 3 are meshed with the seedling-lifting transmission gear 16 and drive the seedling-lifting transmission gear 16 to rotate, and the seedling-lifting gear shaft 20 is driven by the toothed chain transmission mechanism to rotate, the reciprocating driving frame 20 arranged on the seedling-lifting gear shaft 20 completes the transverse stretching and retracting action, so that seedling-lifting work (i.e. seedling sowing) is completed, but in the process, the smooth part of the second incomplete gear 7 corresponds to the gear teeth of the longitudinal displacement transmission gear 6 (i.e. the second incomplete gear 7 is separated from the longitudinal displacement transmission gear 6), and the longitudinal displacement linkage mechanism pauses the movement. When the seedling lifting work is completed and the reciprocating moving frame is reset, the first incomplete gear 3 is separated from the seedling lifting transmission gear 16, and the seedling lifting gear shaft 20 stops moving; then, the gear teeth on the second incomplete gear 7 are meshed with the longitudinal displacement transmission gear 6 to drive the longitudinal displacement transmission gear 6 to rotate, so that the drive bevel gear 9 is driven to rotate, one of the driven bevel gears 10 is driven to rotate, and under the action of the power transmission rod 11, the transmission gear 13 is driven to rotate, so that the transmission rack 12 matched with the transmission gear 13 moves forwards (or backwards), and under the action of the longitudinal moving piece, the whole seedling jacking assembly moves longitudinally by one grid to finish the longitudinal stepping movement of the seedling jacking assembly, and the seedling jacking operation at the next position is waited.
When the turntable 1 continues to rotate, the gear teeth of the first incomplete gear 3 are meshed with the seedling ejection transmission gear 16, seedling ejection is continued for the next time, the smooth part of the second incomplete gear 7 corresponds to the gear teeth of the longitudinal displacement transmission gear 6, and the longitudinal displacement linkage mechanism pauses movement; the seedling-lifting operation is performed repeatedly in this way, so as to realize the seedling-sowing of rice.
The foregoing is illustrative of the present invention, and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A seedling-sowing linkage device of a rice seedling-sowing machine comprises a main power mechanism, a seedling-sowing component, a telescopic seedling-sowing linkage mechanism for driving the seedling-sowing component to perform telescopic seedling-sowing task and a longitudinal displacement linkage mechanism for driving the seedling-sowing component to perform longitudinal and horizontal switching movement between grids of a grid seedling tray; the longitudinal displacement linkage mechanism is characterized by comprising a power driving mechanism and a power transmission mechanism; the power driving mechanism comprises a driving bevel gear, two driven bevel gears and a power transmission rod, wherein the two driven bevel gears are arranged on the power transmission rod, are respectively positioned at two sides of the driving bevel gear and are in matched connection with the driving bevel gear, the driving bevel gear is an incomplete gear, and when the driving bevel gear is meshed with one driven bevel gear, the other driven bevel gear is separated from the driving bevel gear; the power transmission mechanism comprises a transmission gear arranged on the power transmission rod and a transmission rack matched and connected with the transmission gear, and the transmission rack is connected with the seedling ejection assembly;
the main power mechanism comprises a main power shaft, a seedling ejection power transmission mechanism and a longitudinal displacement transmission mechanism, and the main power shaft is connected with a turntable of the rice seedling planter; the seedling lifting power transmission mechanism comprises a first incomplete gear and a seedling lifting transmission gear, wherein the seedling lifting transmission gear is meshed with the first incomplete gear, and the seedling lifting transmission gear is connected with the telescopic seedling lifting linkage mechanism through a seedling lifting transmission assembly;
the longitudinal displacement transmission mechanism comprises a second incomplete gear and a longitudinal displacement transmission gear, the second incomplete gear is arranged on the main power shaft, the longitudinal displacement transmission gear is in meshed matching arrangement with the second incomplete gear, and the longitudinal displacement transmission gear is connected with the driving bevel gear through a longitudinal displacement transmission assembly;
the longitudinal displacement linkage mechanism further comprises a longitudinal moving part, one end of the longitudinal moving part is connected with the conveying rack, and the other end of the longitudinal moving part is connected with the seedling lifting assembly;
the seedling lifting assembly comprises a plurality of seedling lifting needles and fixing pieces for fixing the seedling lifting needles, the seedling lifting needles are arranged on the fixing pieces in a straight line at equal intervals, when one seedling lifting needle faces one grid in the grid seedling tray, the other seedling lifting needles face the corresponding grid, one end of each seedling lifting needle is a fixed end for being connected with the fixing pieces, the other end of each seedling lifting needle is a free end for lifting seedlings, the fixing pieces are connected with the rack through a sliding structure, and the telescopic seedling lifting linkage mechanism is connected with the fixing pieces;
the telescopic seedling lifting linkage mechanism comprises a reciprocating driving frame, a third incomplete gear and a seedling lifting gear shaft for driving the third incomplete gear to rotate; the reciprocating driving frame comprises an upper rack and a lower rack which are arranged in parallel, the upper rack and the lower rack are connected together through a connecting piece, and the third incomplete gear is arranged between the upper rack and the lower rack; the reciprocating driving frame is connected with the fixing piece, and the seedling ejection gear shaft is connected with the seedling ejection transmission gear;
the reciprocating driving frames of each group of reciprocating driving frames are arranged in one-to-one correspondence with the third incomplete gears of each group of third incomplete gears; two groups of third incomplete gears are arranged on the seedling-lifting gear shaft; the seedling lifting assemblies are provided with two groups and are oppositely arranged on the frame, and the two groups of reciprocating driving frames are respectively connected with the fixing pieces of the two groups of seedling lifting assemblies;
the two power transmission mechanisms are arranged, transmission gears of each power transmission mechanism are arranged on the power transmission rod, and transmission racks of the two power transmission mechanisms are respectively connected with fixing pieces of the two seedling ejection assemblies;
the seedling ejection transmission assembly consists of a toothed chain transmission mechanism; the seedling-lifting power transmission mechanism further comprises a first intermediate rod, and the seedling-lifting transmission gear is arranged on the first intermediate rod; the toothed chain transmission mechanism comprises a first transition gear, a second transition gear and a transition chain, the first transition gear is arranged on the first intermediate rod, the second transition gear is arranged on the seedling pushing gear shaft, and the transition chain is arranged on the first transition gear and the second transition gear in a surrounding mode;
the longitudinal moving member comprises a transition member and a support member; the two transition pieces are respectively connected with the two conveying racks; the support piece comprises two support rods and a connecting rod, wherein the support rods are oppositely arranged, and the connecting rod is arranged between the two support rods and is positioned at the end parts of the two support rods; the two transition pieces are connected with the connecting rod.
2. The seedling-sowing linkage of the rice seedling-sowing machine according to claim 1, wherein the toothed chain transmission mechanisms are two groups, the first transition gears of the toothed chain transmission mechanisms of the two groups are all arranged on the first intermediate rod, and the second transition gears are respectively arranged on two sides of the first intermediate rod.
3. The seedling-sowing linkage of the rice seedling-sowing machine of claim 1, wherein the longitudinal-displacement transmission mechanism further comprises a second intermediate lever, the longitudinal-displacement transmission gear being disposed on the second intermediate lever; the longitudinal displacement transmission assembly comprises a third transition gear and a fourth transition gear, the third transition gear is arranged on the second intermediate rod, the fourth transition gear is connected with the third transition gear in a meshed mode, and a transition transmission shaft is arranged between the fourth transition gear and the drive bevel gear.
4. A rice seedling linkage device of a rice seedling planting machine according to claim 3, wherein the second intermediate lever is arranged below a turntable of the rice seedling planting machine, and the transition transmission shaft is arranged below the second intermediate lever.
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