CN110651574A - Rice seedling sowing machine - Google Patents
Rice seedling sowing machine Download PDFInfo
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- CN110651574A CN110651574A CN201911021387.8A CN201911021387A CN110651574A CN 110651574 A CN110651574 A CN 110651574A CN 201911021387 A CN201911021387 A CN 201911021387A CN 110651574 A CN110651574 A CN 110651574A
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- seedling
- ejecting
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- assembly
- driving
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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
Abstract
The invention discloses a rice seedling sowing machine, which comprises a total power mechanism, a traveling mechanism, a seedling tray assembly and a seedling sowing mechanism, wherein the traveling mechanism is arranged on the main power mechanism; the seedling sowing assembly comprises 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, wherein the power driving mechanism comprises a driving bevel gear, two driven bevel gears and a power transmission rod; the bottom of the seedling ejecting component is provided with a seedling tray downward moving linkage mechanism, and the seedling tray downward moving linkage mechanism comprises a blocking support component and a switching power component for pushing the blocking support component to do longitudinal and horizontal switching motion. The seedling tray can effectively prevent the top leakage of the seedlings, does not need to be additionally provided with a power mechanism for driving the grid seedling tray to descend, and has the advantages of simple structure, convenient installation and difficult clamping during working.
Description
Technical Field
The invention relates to crop equipment, in particular to a rice seedling sowing machine.
Background
At present, the known rice planting machines are mainly divided into two types: the first type is a traditional rice transplanter which tears and cuts blanket-shaped seedling roots based on a manipulator (seedling claw) and transplants the seedling roots in separate pockets; the second type is a novel rice transplanter which is based on pot-disk seedling raising with disk and soil-carrying planting. The first type of rice planting machine has mature technology, achieves high planting efficiency by engine high-frequency driving, has the defects of root damage, long seedling turning period after planting, high power required by seedling root tearing and seedling transplanting and mud transplanting operation, high requirement on mechanical material strength, heavy mechanism, high material consumption cost and inconvenient operation in hilly rice areas. The second type of rice planting machine has the advantages that the rice planting machine can pre-divide the soil carried by the rice seedlings, can survive without a green turning period after planting, is accurate and controllable in the number of seedlings per bag, is suitable for planting both the rice seedlings with soil (such as conventional rice) and the rice seedlings with soil (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 application publication number CN109362295A discloses "an improved light and simple array type seedling planter", which is applied to avoid the top leakage of seedlings by adding a stepping descending driving mechanism, and although the grid seedling tray can be smoothly driven to descend and the top leakage of seedlings can not occur, the structure of the whole equipment is more complicated; in addition, when the seedling pushing assembly is driven to move longitudinally, the driving is completed in the mode of incomplete gears and reciprocating driving frames, so that the phenomenon of reversing and blocking is easily caused or a reversing idle stroke is easily caused in the driving process, and the installation difficulty is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a rice seedling sowing machine which can effectively prevent seedlings from leaking and top, does not need to be additionally provided with a power mechanism for driving a grid seedling tray to descend, and is simple in structure and convenient to install.
The purpose of the invention is realized by the following technical scheme:
a rice seedling sowing machine comprises a total power mechanism, a traveling mechanism, a frame arranged on the traveling mechanism, a seedling tray assembly arranged on the frame and a seedling sowing mechanism; wherein, the seedling tray component comprises a grid seedling tray which is arranged on the frame and is vertical to the horizontal plane; the seedling sowing assembly comprises a seedling ejecting assembly, a telescopic seedling ejecting linkage mechanism for driving the seedling ejecting assembly to perform a telescopic seedling ejecting task and a longitudinal displacement linkage mechanism for driving the seedling ejecting assembly to perform longitudinal and horizontal switching motion between grids of the grid seedling tray; it is characterized in that the preparation method is characterized in that,
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 two driven bevel gears are arranged on the power transmission rod, are respectively positioned on two sides of the driving bevel gear and are in matched connection with the driving bevel gear; the power transmission mechanism comprises a transmission gear arranged on the power transmission rod and a transmission rack connected with the transmission gear in a matching way; the power output part of the total power mechanism is connected with the driving bevel gear;
the bottom of the seedling ejecting assembly is provided with a seedling tray downward moving linkage mechanism, and the seedling tray downward moving linkage mechanism comprises a blocking support assembly and a switching power assembly for pushing the blocking support assembly to do longitudinal horizontal switching motion; the blocking support assembly comprises two blocking rods and a middle connecting rod, the two blocking rods are respectively arranged at two ends of the middle connecting rod, the two blocking rods are respectively positioned at corresponding positions of two vertical side edges of the grid seedling tray, comb-shaped stopping strips are respectively arranged on the two vertical side edges of the grid seedling tray, and the two blocking rods are respectively arranged in one-to-one correspondence with the comb-shaped stopping strips on two sides; the switching power assembly comprises a pushing driving part and two seedling ejecting limiting parts; the seedling ejecting assembly is arranged on the pushing driving part, the pushing driving part is in friction contact connection with the seedling ejecting assembly, the pushing driving part is connected with the transmission rack, and the pushing driving part is positioned between the two blocking rods; the two seedling-ejecting limiting parts are respectively arranged at two sides of the seedling-ejecting component and correspond to the seedling-ejecting component in height; when the seedling ejecting assembly needs to move for grid switching, the longitudinal displacement linkage mechanism drives the pushing driving piece to move longitudinally, and meanwhile, the seedling ejecting assembly is driven to move under the action of friction resistance; when the seedling ejecting assembly moves to the last grid on the grid seedling tray and the grid seedling tray needs to be driven to descend, the longitudinal displacement linkage mechanism drives the pushing driving piece to continue to move longitudinally, the seedling ejecting limiting piece blocks the seedling ejecting assembly to enable the seedling ejecting assembly to stop moving, the pushing driving piece overcomes the friction force between the pushing driving piece and the seedling ejecting assembly to independently move longitudinally and pushes the blocking supporting assembly to move, finally, the two blocking rods are switched between the comb-shaped stopping strips of the grid seedling tray, and the grid seedling tray descends under the action of gravity.
According to a preferable scheme of the invention, the total power mechanism comprises a turntable, a main power shaft, a seedling pushing power transmission mechanism and a longitudinal displacement transmission mechanism, wherein the main power shaft is connected with the turntable; the seedling ejecting power transmission mechanism comprises a first incomplete gear and a seedling ejecting transmission gear, the seedling ejecting transmission gear is meshed with the first incomplete gear, and the seedling ejecting transmission gear is connected with the telescopic seedling ejecting linkage mechanism through a seedling ejecting 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 meshed with the second incomplete gear in a matched mode, and the longitudinal displacement transmission gear is connected with the main bevel gear through a longitudinal displacement transmission assembly.
Preferably, the seedling ejecting transmission assembly is composed of a toothed chain transmission mechanism; the seedling ejecting power transmission mechanism also comprises a first intermediate rod, and the seedling ejecting transmission gear is arranged on the first intermediate rod; the gear 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 a direct power source shaft of the telescopic seedling jacking linkage mechanism, and the transition chain is arranged on the first transition gear and the second transition gear in a surrounding mode.
Preferably, the longitudinal displacement transmission mechanism further comprises a second intermediate rod, and the longitudinal displacement transmission gear is arranged on the second intermediate rod; 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 in meshed connection with the third transition gear, and a transition transmission shaft is arranged between the fourth transition gear and the driving bevel gear.
According to a preferable scheme of the invention, the seedling ejecting needle assembly comprises a plurality of seedling ejecting needles and a fixing piece for fixing the seedling ejecting needles, the plurality of seedling ejecting needles are linearly and equidistantly arranged on the fixing piece, when one of the seedling ejecting needles is opposite to one of grids in the grid seedling tray, other seedling ejecting needles are opposite to the corresponding grids, one end of each seedling ejecting needle is a fixed end for connecting with the fixing piece, the other end of each seedling ejecting needle is a free end for ejecting seedlings, the fixing piece is connected with the rack through a sliding structure, and the telescopic seedling ejecting linkage mechanism is connected with the fixing piece.
Preferably, the telescopic seedling-ejecting linkage mechanism comprises a reciprocating type driving frame, a third incomplete gear and a seedling-ejecting gear shaft for driving the third incomplete gear to rotate, and the seedling-ejecting gear shaft forms the direct power source shaft; 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 type driving frame is connected with the fixing piece, and the seedling ejecting gear shaft is connected with the seedling ejecting transmission gear.
In a preferable scheme of the invention, supporting platforms are arranged at corresponding positions of the blocking rods, and the middle parts of the blocking rods are supported on the supporting platforms.
According to a preferable scheme of the invention, mounting bearings are arranged at two ends of the middle connecting rod, one ends of the two blocking rods are correspondingly arranged on the mounting bearings, and the other ends of the two blocking rods extend towards one side of the grid seedling tray.
According to a preferable scheme of the invention, a transverse guide mechanism is arranged between the push driving part and the seedling ejecting assembly, and comprises a transverse guide rail fixedly arranged on the push driving part and a transverse sliding block matched with the transverse guide rail; the transverse sliding block is provided with a damping gasket, and the seedling ejecting assembly is arranged on the damping gasket.
In a preferred embodiment of the present invention, the seedling-ejecting limiting member is formed by a limiting rod extending transversely, and the limiting rod is perpendicular to the moving direction of the driving member.
Compared with the prior art, the invention has the following beneficial effects:
1. the power driving mechanism in the longitudinal displacement linkage mechanism adopts the matching mode of bevel gears to realize the forward and reverse rotation of the power transmission rod, so that the reciprocating motion of the seedling ejecting assembly is realized, and the structure is simple; in addition, the bevel gear is matched, so that the installation is convenient, and the installation difficulty of the bevel gear is effectively reduced compared with the incomplete gear and rack reciprocating driving mode; and when the driving bevel gear is meshed and converted between the two driven bevel gears, the reciprocating stepping displacement without reversing and desynchronizing can be realized, the locking is not easy, the normal operation of the rice seedling sowing machine is ensured, and the maintenance is convenient.
2. The push driving part and the seedling ejecting component are connected in a friction contact mode, so that when the seedling ejecting component is driven to move, the push driving part and the seedling ejecting component move integrally at the same time, when the grid seedling tray is driven to descend, the seedling ejecting component already ejects seedlings on all grids in the same layer, and the push driving part and the seedling ejecting component move relatively, so that the position of the seedling ejecting component is kept unchanged, the seedling ejecting work of all grids can be completed, and the seedling ejecting component can be aligned with the grids of the descended grid seedling tray to carry out the seedling ejecting work of the next round.
Drawings
Fig. 1 is a schematic perspective view of one embodiment of a rice seedling planting machine according to the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a partially enlarged view of fig. 1 (the seedling-ejecting assembly is located at the corresponding position of the last grid on the left side of the grid seedling tray, and the blocking rod is pushed to the left side by the push driving member, which is not shown in the diagram of the seedling-ejecting limiting member on the left side).
FIG. 4 is a perspective view of the blocking support assembly and the switching power assembly of FIG. 3.
Fig. 5 is a perspective view of the longitudinal displacement linkage.
Fig. 6 is a perspective view of the power drive mechanism.
FIGS. 7-11 are schematic and diagrammatic views of the configurations of the seedling ejecting assembly, the blocking support assembly and the switching power assembly; fig. 7 is a schematic view when the seedling-ejecting assembly moves to the last grid on the left side of the grid seedling tray, fig. 8 is a schematic view after the driving member pushes the stop rod on the left side, fig. 9 is a schematic view in the process of reciprocating from left to right, fig. 10 is a schematic view when the seedling-ejecting assembly moves to the last grid on the right side of the grid seedling tray, and fig. 11 is a schematic view after the driving member pushes the stop rod on the right side.
Detailed Description
The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1-3, the rice seedling planting machine of the present embodiment includes a total power mechanism, a traveling mechanism 22, a frame disposed on the traveling mechanism 22, and a seedling tray assembly and a seedling planting mechanism disposed on the frame; wherein, the seedling tray component comprises a grid seedling tray 2a which is arranged on the frame and is vertical to the horizontal plane; the seedling sowing assembly comprises a seedling ejecting assembly, a telescopic seedling ejecting linkage mechanism for driving the seedling ejecting assembly to perform a telescopic seedling ejecting task and a longitudinal displacement linkage mechanism for driving the seedling ejecting assembly to perform longitudinal and horizontal switching motion between grids of the grid seedling tray; wherein:
referring to fig. 2, 3, 5 and 6, the longitudinal displacement linkage includes a power drive mechanism and a power transmission mechanism; the power driving mechanism comprises a driving 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, are respectively positioned on two sides of the driving bevel gear 9 and are respectively connected with the driving bevel gear 9 in a matching manner, the driving bevel gear 9 is an incomplete gear, and when the driving bevel gear 9 is meshed with one driven bevel gear 10, the other driven bevel gear 10 is separated from the driving bevel gear 9; the power transmission mechanism comprises a transmission gear 13 arranged on the power transmission rod 11 and a transmission rack 12 matched and connected with the transmission gear 13.
Referring to fig. 2, fig. 3, fig. 5 and fig. 6, the total power mechanism comprises a main power shaft 2, a seedling ejecting power transmission mechanism and a longitudinal displacement transmission mechanism, wherein the main power shaft 2 is connected with a rotary table 1 of the rice seedling sowing mechanism; the seedling ejecting power transmission mechanism comprises a first incomplete gear 3 and a seedling ejecting transmission gear 16, the seedling ejecting transmission gear 16 is meshed with the first incomplete gear 3, and the seedling ejecting transmission gear 16 is connected with the telescopic seedling ejecting linkage mechanism through a seedling ejecting 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 meshed with the second incomplete gear 7 in a matched mode, and the longitudinal displacement transmission gear 6 is connected with the driving bevel gear 9 through a longitudinal displacement transmission assembly.
Referring to fig. 2-4, the seedling-ejecting needle 14 assembly includes a plurality of seedling-ejecting needles 14 and a fixing member 6a for fixing the seedling-ejecting needles 14, the plurality of seedling-ejecting needles 14 are arranged in a linear and equidistant manner on the fixing member 6a, and when one of the seedling-ejecting needles 14 is directly opposite to one of the grids in the grid seedling tray, the other seedling-ejecting needles 14 are directly opposite to the corresponding grid, one end of each seedling-ejecting needle 14 is a fixed end for connecting with the fixing member 6a, and the other end is a free end for ejecting seedlings, the fixing member 6a is connected with the frame through a sliding structure, and the telescopic seedling-ejecting linkage mechanism is connected with the fixing member 6 a.
Referring to fig. 2 and 3, the telescopic seedling-ejecting linkage mechanism comprises a reciprocating type driving frame 20, a first incomplete gear and a seedling-ejecting gear shaft 20 for driving the first incomplete gear to rotate; the reciprocating driving frame 20 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 20 is connected to the fixing member 6 a.
Referring to fig. 2 and 3, there are two sets of reciprocating driving frames 20 and third incomplete gears, and the reciprocating driving frame 20 of each set of reciprocating driving frame 20 and the third incomplete gear of each set of third incomplete gear are arranged in a one-to-one correspondence manner; two groups of third incomplete gears are arranged on the seedling-ejecting gear shaft 20; two sets of seedling-ejecting components are oppositely arranged on the frame, and the two sets of reciprocating driving frames 20 are respectively connected with the fixing pieces 6a of the two sets of seedling-ejecting components. By adjusting the directions of the two third incomplete gears, specifically, when one of the third incomplete gears is meshed with the upper rack of the corresponding reciprocating driving frame 20, the other third incomplete gear is meshed with the lower rack of the corresponding reciprocating driving frame 20; at this time, when the seedling-ejecting gear shaft 20 rotates, each reciprocating driving frame 20 can make reverse reciprocating motion under the driving of the corresponding third incomplete gear, so that the seedling-ejecting motion of two oppositely arranged grid seedling trays is realized under the condition of one-step driving, the rapid seedling sowing is realized, and the seedling-ejecting efficiency is favorably improved.
Referring to fig. 2 and 3, the number of the power transmission mechanisms is two, the transmission gear 13 of each power transmission mechanism is arranged on the power transmission rod 11, and the transmission racks 12 of the two power transmission mechanisms are connected with the seedling ejecting assembly. Two power transmission mechanisms are arranged, so that the two groups of seedling ejecting assemblies can be better driven.
The seedling ejecting component and the telescopic seedling ejecting linkage mechanism of the embodiment can be referred to as a seedling ejecting needle component and a telescopic driving mechanism in an invention patent application with application publication number of CN109362295A in an improved light and simple array type seedling planter.
Referring to fig. 2 and 3, the seedling-pushing transmission assembly is composed of a toothed chain transmission mechanism; the seedling ejecting power transmission mechanism further comprises a first intermediate rod 17, and the seedling ejecting transmission gear 16 is arranged on the first intermediate rod 17; the gear 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 ejecting 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 power transmission between the seedling pushing power transmission mechanism and the telescopic seedling pushing linkage mechanism is realized by adopting a toothed chain transmission mechanism, and the structure is simple; in addition, the toothed chain transmission mechanism can adapt to different distances between the seedling ejecting power transmission mechanism and the telescopic seedling ejecting linkage mechanism so as to be convenient to adjust, 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 and 3, the toothed chain drive has two sets, and the first transition gears 15 of the toothed chain drive of the two sets are both disposed on the first intermediate lever 17, and the second transition gears are disposed on both sides of the first intermediate lever 17. Through setting up two sets of tooth chain drive, can drive two and push up seedling pinion shafts 20 simultaneously and rotate, realize a plurality of seedling work of pushing up, improve and sow seedling efficiency.
Referring to fig. 2 and 3, the longitudinal displacement transmission mechanism further comprises a second intermediate rod 18, and the longitudinal displacement transmission gear 6 is arranged on the second intermediate rod 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 driving bevel gear 9. By arranging the longitudinal displacement transmission assembly, the driving bevel gear 9 is driven, so that the seedling ejecting assembly is driven longitudinally; the transmission of the gear is adopted, so that the connection between the transition transmission shaft 8 and the driving bevel gear 9 is convenient, and the structure is simple; in addition, through the cooperation of the third transition gear 4 and the fourth transition gear 5, the longitudinal displacement linkage mechanism can be arranged below the gear chain transmission mechanism, the positions of the third transition gear and the fourth transition gear are staggered, the space is fully and reasonably utilized, and interference can be avoided.
Referring to fig. 2 and 3, the second intermediate rod 18 is arranged below the rotary disc 1 of the rice seedling planter, and the transition transmission shaft 8 is arranged below the second intermediate rod 18. Therefore, the longitudinal displacement linkage mechanism is positioned below the turntable 1, which is beneficial to staggering the telescopic seedling-ejecting linkage mechanism of the seedling-ejecting component of the rice seedling planter and the seedling-ejecting transmission component in the vertical direction, avoiding the interference between the telescopic seedling-ejecting linkage mechanism and the seedling-ejecting transmission component, and fully and reasonably utilizing the space of the seedling planter.
Referring to fig. 2 and 3, a seedling tray downward moving linkage mechanism is arranged at the bottom of the seedling ejecting assembly and comprises a blocking support assembly and a switching power assembly for pushing the blocking support assembly to perform horizontal and longitudinal switching movement; the blocking support assembly comprises two blocking rods 9a and a middle connecting rod 11a, the two blocking rods 9a are respectively arranged at two ends of the middle connecting rod 11a, the two blocking rods 9a are respectively positioned at corresponding positions of two vertical side edges of the grid seedling tray 2a, the two vertical side edges of the grid seedling tray 2a are respectively provided with comb-shaped blocking strips 1a, and the two blocking rods 9a are respectively arranged in one-to-one correspondence with the comb-shaped blocking strips 1a at two sides; the switching power assembly comprises a pushing driving part 7a and two seedling ejecting limiting parts 3 a; the push driving part 7a is arranged below the fixing part 6a of the seedling ejecting assembly, the push driving part 7a is in friction contact connection with the fixing part 6a, the push driving part 7a is connected with the transmission rack 12, and the push driving part 7a is positioned between the two blocking rods 9 a; the two seedling-ejecting limiting parts 3a are respectively arranged on two sides of the fixing part 6a and correspond to the fixing part 6a in height; when the whole seedling ejecting assembly needs to move for grid switching, the transmission rack 12 in the longitudinal displacement linkage mechanism drives the pushing driving piece 7a to move longitudinally, and meanwhile, the whole seedling ejecting assembly is driven to move under the action of frictional resistance; when the seedling ejecting assembly moves to the last grid on the grid seedling tray 2a and the grid seedling tray 2a needs to be driven to descend, the longitudinal displacement linkage mechanism drives the pushing driving part 7a to continue to move longitudinally, at the moment, the seedling ejecting limiting part 3a blocks the fixing part 6a of the seedling ejecting assembly to enable the whole seedling ejecting assembly to be incapable of moving continuously, the pushing driving part 7a overcomes the friction force between the pushing driving part and the fixing part 6a to independently move longitudinally and push the blocking supporting assembly to move, finally, the two blocking rods 9a are switched between the comb-shaped stopping strips 1a of the grid seedling tray 2a, and the grid seedling tray 2a descends under the action of gravity.
The friction contact connection is that friction exists between the pushing driving part 7a and the fixing part 6a, and when the longitudinal displacement linkage mechanism drives the pushing driving part 7a to move under the condition of no external force obstruction, the pushing driving part 7a and the seedling ejecting component form a whole and move simultaneously; however, under the obstruction of external force, namely when the fixed part 6a is blocked by the seedling ejecting limiting part 3a, when the longitudinal displacement linkage mechanism drives the pushing driving part 7a to move, the pushing moving part and the fixed part 6a slide relatively, the pushing driving part 7a can normally move according to the driving direction of the longitudinal displacement linkage mechanism, and the fixed part 6a is blocked by the seedling ejecting limiting part 3a to keep the position of the whole seedling ejecting assembly unchanged, namely the position of the seedling ejecting needle 14 unchanged.
Referring to fig. 3 and 4, a bearing table 4a is provided at a corresponding position of each blocking rod 9a, and the middle of each blocking rod 9a is supported on the bearing table 4 a. Because the two blocking rods 9a need to bear the gravity of the whole grid seedling tray 2a, the bearing capacity of the blocking rods 9a can be improved and the deformation capacity of the blocking rods 9a can be improved through the arrangement of the supporting table 4 a; meanwhile, the blocking rod 9a can rub against the stop bars on the grid seedling tray 2a in the moving process, so that the stability of the blocking rod 9a in the moving process can be better under the action of the supporting table 4a, and the grid seedling tray 2a can be lowered smoothly.
Referring to fig. 3 and 4, both ends of the middle connecting rod 11a are provided with mounting bearings 8a, one end of each of the two blocking rods 9a is correspondingly arranged on the mounting bearing 8a, and the other end extends to one side of the grid seedling tray 2 a. When the blocking rod 9a moves, the free end of the blocking rod 9a can rub against the stop bars of the grid seedling tray 2a, and the setting of the mounting bearing 8a enables the blocking rod 9a to rotate with the stop bars when the blocking rod 9a and the stop bars move, so that the friction between the blocking rod 9a and the stop bars on the grid seedling tray 2a is reduced, the movement of the blocking rod 9a is facilitated, and the lowering of the grid seedling tray 2a is facilitated.
Referring to fig. 3 and 4, a longitudinal guide mechanism is arranged between the intermediate connecting rod 11a and the machine frame, and the longitudinal guide mechanism comprises a longitudinal guide rail fixedly arranged on the machine frame and a longitudinal slide block, and the longitudinal slide block is matched with the longitudinal guide rail and fixedly arranged at the bottom of the intermediate connecting rod 11 a. Through the setting of vertical guiding mechanism, be favorable to improving and block supporting component's mobility stability and precision.
Referring to fig. 3 and 4, the push driving member 7a is disposed below the seedling ejecting assembly 6 a. Therefore, the seedling pushing component 6a can be better matched with the seedling pushing component 6a, a larger space is vacated for the seedling pushing component 6a to carry out seedling pushing work, and the whole device is more compact.
Referring to fig. 3 and 4, there are two sets of blocking support assemblies, and the blocking rods 9a of the two sets of blocking support assemblies are arranged in one-to-one correspondence and arranged back to back. Through setting up two sets of supporting components that block, can support two relative grid seedling dishes 2a that set up simultaneously to the adaptation is equipped with the rice seedling machine of a plurality of grid seedling dishes 2 a.
Referring to fig. 3 and 4, a transverse guide mechanism 5a is arranged between the push driving member 7a and the seedling ejecting assembly 6a, and the transverse guide mechanism 5a comprises a transverse guide rail fixedly arranged on the push driving member 7a and a transverse sliding block matched with the transverse guide rail; the transverse sliding block is provided with a damping gasket 12a, and the seedling ejecting assembly 6a is arranged on the damping gasket 12 a. Through the arrangement of the transverse guide mechanism 5a, the seedling ejecting component 6a can move transversely more stably when ejecting seedlings, and meanwhile, the seedling ejecting component 6a can be driven to move longitudinally when the driving piece 7a is pushed to move longitudinally; through the arrangement of the damping gaskets 12a, the friction connection between the push driving part 7a and the seedling ejecting assembly 6a is realized, so that the push driving part 7a and the seedling ejecting assembly 6a can move synchronously and can also slide relatively.
With reference to fig. 3 and 4, the push driver 7a comprises a transition piece 21 and a supporting pusher; two transition pieces 21 are arranged, and the two transition pieces 21 are respectively connected with the two transmission racks 12; the supporting and pushing part comprises two supporting rods 23 and a connecting rod 24 which are oppositely arranged, and the connecting rod 24 is arranged between the two supporting rods 23 and is positioned at the end parts of the two supporting rods 23; the two transition pieces 21 are connected to the connecting rod 24. Through setting up such promotion driving piece, be convenient for with two transmission rack connections of two sets of power transmission mechanism, in addition, through setting up such support piece, be convenient for with push up the seedling subassembly and be connected. The lateral guide mechanism 5a is provided on two support bars 23.
Referring to fig. 3 and 4, the seedling-pushing limiting member 3a is formed by a limiting rod extending transversely, and the limiting rod is perpendicular to the moving direction of the pushing driving member 7 a.
Referring to fig. 1, the number of the grid seedling trays of the rice seedling planting machine in the embodiment is four, two of the grid seedling trays are in one group, and the seedling planting mechanism is arranged between the two grid seedling trays in each group.
Referring to fig. 1 to 11, the working principle of the rice seedling sowing machine of the present embodiment is as follows:
when the rice seedling planter works, the power mechanisms such as manpower or a motor and the like are used for driving the rotary disc 1 of the rice seedling planter to rotate for a circle, and in the process that the rotary disc 1 rotates for a circle (the following transverse and longitudinal directions are described and are defined by the visual angle of an operator):
firstly, a first incomplete gear 3 and a second incomplete gear 7 which are arranged on a main power shaft 2 rotate, at the moment, gear teeth on the first incomplete gear 3 are meshed with a seedling ejecting transmission gear 16 and drive the seedling ejecting transmission gear 16 to rotate, the seedling ejecting gear shaft 20 is driven to rotate by a toothed chain transmission mechanism, a reciprocating type driving frame 20 arranged on the seedling ejecting gear shaft 20 completes transverse extending and retracting actions, and therefore seedling ejecting work (namely seedling sowing) is completed, but in the process, a smooth part of the second incomplete gear 7 corresponds to the gear teeth of a longitudinal displacement transmission gear 6 (namely the second incomplete gear 7 is separated from the longitudinal displacement transmission gear 6), and the longitudinal displacement linkage mechanism stops moving. When the seedling ejecting work is finished and the reciprocating type moving frame is reset, the first incomplete gear 3 is separated from the seedling ejecting transmission gear 16, and the seedling ejecting gear shaft 20 stops moving; and 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 driving bevel gear 9 is driven to drive one driven bevel gear 10 to rotate, the transmission gear 13 is driven to rotate under the action of the power transmission rod 11, the transmission rack 12 matched with the transmission gear 13 is longitudinally moved forwards (or backwards), the whole seedling ejecting assembly is longitudinally moved for one grid under the action of the pushing driving piece 7a, the longitudinal stepping movement of the seedling ejecting assembly is completed, and the seedling ejecting 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 ejecting transmission gear 16, the next seedling ejecting is continued, 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 stops moving; thus, the seedling pushing work and the stepping longitudinal movement of the seedling pushing assembly are continuously carried out, and the continuous seedling sowing of the rice is realized.
When the seedling ejecting component moves to the position of the last lattice of the lattice seedling tray 2a and finishes the seedling ejecting work, the gear teeth of the first incomplete gear 3 are separated from the seedling ejecting transmission gear 16, the gear teeth of the second incomplete gear 7 are meshed with the longitudinal displacement transmission gear 6, the pushing driving part 7a is driven to continue to move longitudinally under the action of the longitudinal displacement transmission gear, at the moment, the fixing part 6a is blocked by the seedling ejecting limiting part 3a, so that the seedling ejecting component cannot continue to move forwards, the position of the seedling ejecting component is limited, at the moment, the pushing driving part 7a continues to move forwards after overcoming the friction force between the pushing driving part and the fixing part 6a, so that the end part of the pushing driving part 7a pushes the corresponding blocking rod 9a, the blocking rod 9a moves outwards, the other blocking rod 9a simultaneously moves inwards under the action of the middle connecting rod 11a, and the switching of the two blocking rods 9a between the comb-shaped stopping strips 1a of the lattice seedling tray 2a is finished, finally, the grid seedling tray 2a descends one step; after the grid seedling tray 2a descends by one step, the grid of the upper layer corresponds to the seedling ejecting needle 14 of the seedling tray assembly, and normal seedling ejecting work is continued.
When the rotary table 1 is continuously rotated to carry out seedling ejecting work, the gear teeth of the driving bevel gear 9 are meshed with the other driven bevel gear 10, and the longitudinal moving directions of the seedling ejecting components are opposite; thus, the reciprocating longitudinal movement and the seedling ejecting work are continuously carried out.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. A rice seedling sowing machine comprises a total power mechanism, a traveling mechanism, a frame arranged on the traveling mechanism, a seedling tray assembly arranged on the frame and a seedling sowing mechanism; wherein, the seedling tray component comprises a grid seedling tray which is arranged on the frame and is vertical to the horizontal plane; the seedling sowing assembly comprises a seedling ejecting assembly, a telescopic seedling ejecting linkage mechanism for driving the seedling ejecting assembly to perform a telescopic seedling ejecting task and a longitudinal displacement linkage mechanism for driving the seedling ejecting assembly to perform longitudinal and horizontal switching motion between grids of the grid seedling tray; it is characterized in that the preparation method is characterized in that,
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 two driven bevel gears are arranged on the power transmission rod, are respectively positioned on two sides of the driving bevel gear and are in matched connection with the driving bevel gear; the power transmission mechanism comprises a transmission gear arranged on the power transmission rod and a transmission rack connected with the transmission gear in a matching way; the power output part of the total power mechanism is connected with the driving bevel gear;
the bottom of the seedling ejecting assembly is provided with a seedling tray downward moving linkage mechanism, and the seedling tray downward moving linkage mechanism comprises a blocking support assembly and a switching power assembly for pushing the blocking support assembly to do longitudinal horizontal switching motion; the blocking support assembly comprises two blocking rods and a middle connecting rod, the two blocking rods are respectively arranged at two ends of the middle connecting rod, the two blocking rods are respectively positioned at corresponding positions of two vertical side edges of the grid seedling tray, comb-shaped stopping strips are respectively arranged on the two vertical side edges of the grid seedling tray, and the two blocking rods are respectively arranged in one-to-one correspondence with the comb-shaped stopping strips on two sides; the switching power assembly comprises a pushing driving part and two seedling ejecting limiting parts; the seedling ejecting assembly is arranged on the pushing driving part, the pushing driving part is in friction contact connection with the seedling ejecting assembly, the pushing driving part is connected with the transmission rack, and the pushing driving part is positioned between the two blocking rods; the two seedling-ejecting limiting parts are respectively arranged at two sides of the seedling-ejecting component and correspond to the seedling-ejecting component in height; when the seedling ejecting assembly needs to move for grid switching, the longitudinal displacement linkage mechanism drives the pushing driving piece to move longitudinally, and meanwhile, the seedling ejecting assembly is driven to move under the action of friction resistance; when the seedling ejecting assembly moves to the last grid on the grid seedling tray and the grid seedling tray needs to be driven to descend, the longitudinal displacement linkage mechanism drives the pushing driving piece to continue to move longitudinally, the seedling ejecting limiting piece blocks the seedling ejecting assembly to enable the seedling ejecting assembly to stop moving, the pushing driving piece overcomes the friction force between the pushing driving piece and the seedling ejecting assembly to independently move longitudinally and pushes the blocking supporting assembly to move, finally the two blocking rods are switched between the comb-shaped stopping strips of the grid seedling tray, and the grid seedling tray descends under the action of gravity.
2. The rice seedling sowing machine of claim 1, wherein the total power mechanism comprises a turntable, a main power shaft, a seedling ejecting power transmission mechanism and a longitudinal displacement transmission mechanism, and the main power shaft is connected with the turntable; the seedling ejecting power transmission mechanism comprises a first incomplete gear and a seedling ejecting transmission gear, the seedling ejecting transmission gear is meshed with the first incomplete gear, and the seedling ejecting transmission gear is connected with the telescopic seedling ejecting linkage mechanism through a seedling ejecting 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 meshed with the second incomplete gear in a matched mode, and the longitudinal displacement transmission gear is connected with the main bevel gear through a longitudinal displacement transmission assembly.
3. The rice seedling planting machine according to claim 2, wherein the seedling ejecting transmission assembly is composed of a toothed chain transmission mechanism; the seedling ejecting power transmission mechanism also comprises a first intermediate rod, and the seedling ejecting transmission gear is arranged on the first intermediate rod; the gear 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 a direct power source shaft of the telescopic seedling jacking linkage mechanism, and the transition chain is arranged on the first transition gear and the second transition gear in a surrounding mode.
4. The rice seedling planting machine of claim 3, wherein the longitudinal displacement transmission mechanism further comprises a second intermediate rod, and the longitudinal displacement transmission gear is arranged on the second intermediate rod; 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 in meshed connection with the third transition gear, and a transition transmission shaft is arranged between the fourth transition gear and the driving bevel gear.
5. The rice seedling planting machine of claim 4, wherein the seedling ejecting needle assembly comprises a plurality of seedling ejecting needles and a fixing member for fixing the seedling ejecting needles, the plurality of seedling ejecting needles are arranged on the fixing member in a linear and equidistant manner, when one of the seedling ejecting needles is opposite to one of the grids in the grid seedling tray, the other seedling ejecting needles are opposite to the corresponding grid, one end of each seedling ejecting needle is a fixed end for being connected with the fixing member, the other end of each seedling ejecting needle is a free end for ejecting seedlings, the fixing member is connected with the frame through a sliding structure, and the telescopic seedling ejecting linkage mechanism is connected with the fixing member.
6. The rice seedling planting machine as claimed in claim 5, wherein the telescopic seedling-ejecting linkage mechanism comprises a reciprocating drive frame, a third incomplete gear and a seedling-ejecting gear shaft for driving the third incomplete gear to rotate, the seedling-ejecting gear shaft constituting the direct power source shaft; 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 type driving frame is connected with the fixing piece, and the seedling ejecting gear shaft is connected with the seedling ejecting transmission gear.
7. The rice seedling sowing machine of claim 1, wherein a bearing table is arranged at the corresponding position of each blocking rod, and the middle part of each blocking rod is supported on the bearing table.
8. The rice seedling sowing machine as claimed in claim 1, wherein the middle connecting rod is provided at both ends thereof with mounting bearings, one end of each of the two blocking rods is correspondingly arranged on the mounting bearing, and the other end extends towards one side of the grid seedling tray.
9. The rice seedling planting machine as claimed in claim 1, wherein a transverse guide mechanism is provided between the push driving member and the seedling ejecting assembly, the transverse guide mechanism comprises a transverse guide rail fixedly provided on the push driving member and a transverse slide block matched with the transverse guide rail; the transverse sliding block is provided with a damping gasket, and the seedling ejecting assembly is arranged on the damping gasket.
10. The rice seedling planting machine as claimed in claim 1, wherein the seedling-pushing limiting member is formed by a limiting rod extending transversely, and the limiting rod is perpendicular to the moving direction of the pushing driving member.
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