CN113016295B - Rice seedling shallow planting swing planting method and seedling claw retracting type planting arm - Google Patents
Rice seedling shallow planting swing planting method and seedling claw retracting type planting arm Download PDFInfo
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- CN113016295B CN113016295B CN202110224517.9A CN202110224517A CN113016295B CN 113016295 B CN113016295 B CN 113016295B CN 202110224517 A CN202110224517 A CN 202110224517A CN 113016295 B CN113016295 B CN 113016295B
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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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Abstract
The invention relates to a rice seedling shallow planting arranging and planting method and a seedling claw retracting planting arm, wherein the seedling claw retracting planting arm comprises: the planting arm mechanism, the combined type telescopic seedling claw, the combined type seedling blocking device, the spring retainer ring, the connecting seat and the seedling blocking rod base are arranged on the planting arm mechanism; the seedling claw retracting planting arm is fixedly connected with the planet wheel of the rotary box through a connecting seat; the rice seedling shallow planting and arranging method applying the seedling claw retracting type planting arm comprises the following steps: seedling taking, seedling separating and seedling conveying stages; a swing planting stage and a return stage; the shallow planting of rice seedlings is realized, the agricultural production requirement of rice is met, jack openings generated by inserting a seedling claw of traditional machine-transplanted seedlings into soil and soil pits generated by pushing a seedling rod to push the seedlings are avoided when pot body blanket-shaped seedlings are planted, pits generated by pushing the seedling rod of traditional machine-transplanted seedlings are avoided when common blanket-shaped seedlings are planted, the vertical degree of the seedlings after being planted is guaranteed, seedling floating and seedling falling caused by the fact are avoided, and the yield of the rice is improved.
Description
Technical Field
The invention relates to a planting machine in the field of agricultural machinery, in particular to a rice seedling shallow planting swing planting method and a planting arm for realizing the method.
Background
Application No. 202010756290.8, a Rice planting method, proposes a Rice planting method, wherein the depth of transplanting rice seedlings is 4-5cm when the seedlings are transplanted. According to the agricultural requirements, when the transplanting depth is more than 3cm, the green turning and tillering of seedlings are obviously inhibited, particularly low-level node tillering and poor tillering quality seriously affect the yield of rice.
Application No. 201710388227.1, high-yield planting method for rice pot seedling machine, proposes a high-yield planting method for rice pot seedling machine, in which the transplanting part is transplanted by using a traditional transplanter, and the transplanting depth is controlled within 2 cm. The seedling transplanting depth of the method improves the tillering speed of the pot blanket seedlings to a certain extent, but the pot blanket seedlings are required to be shallow planted by agricultural technology to fully exert the advantages of early tillering and low-node tillering in the tillering stage.
Application No. 201610372852.2 "seedling pusher of rice transplanter" proposes a seedling pusher of rice transplanter, which comprises a seedling pusher head and a seedling pusher shaft, wherein the transplanting arms of the common rice transplanter in the market adopt similar devices, the seedling claws are inserted into the soil when the transplanting arms work, and then the seedling pusher pushes the seedlings into the soil. However, when the traditional rice transplanter is used for transplanting rice, the rice claw is inserted into soil to form an opening of the jack, and a pit is left in the soil after the rice pushing rod pushes the rice, so that the uprightness of the rice seedling is influenced, and the phenomena of rice seedling falling and floating are caused, thereby influencing the yield of the rice.
At present, the mechanized rice transplanting technology in China tends to be perfect, the blanket-shaped tray seedling raising technology becomes the mainstream, and the blanket-shaped seedlings are mainly adopted for the mechanical rice transplanting. The transplanting depth is an important index for evaluating the operation quality of the transplanting machine and influences the green turning and tillering of rice seedlings. According to the agricultural production requirement of rice, the general situation is that the rice is not floated and can not fall, and the shallower the rice is, the better the rice is. The shallow planting is beneficial to early tillering stage, the seedlings are early at the peak, the seedlings are mostly low-node tillering, the main spike and the tillering spike are basically consistent, the spike forming rate is high, and the yield increase of the rice is facilitated. The traditional mechanized rice transplanting technology has the rice transplanting depth of 2-4cm generally, at the moment, more rice seedlings have roots and grow vigorously, but the green turning and tillering of the rice seedlings are inhibited, especially low-level-node tillering, and the late-peak seedlings mostly have high-node tillering and poor tillering quality, so that the high yield of the rice is not facilitated.
The transplanting mechanism is the core working part of the rice transplanter and mainly comprises a rotary box and a transplanting arm which determine the quality of mechanical transplanting. The transplanting arm is used as a device for cutting blanket seedlings on a seedling box of the transplanter into plug seedlings with a certain number of plants by using a seedling claw and inserting the plug seedlings into a field. At present, the structural form and the transmission principle of a transplanting arm of a rice transplanter sold in markets at home and abroad are basically consistent, and the rice transplanter pushes seedlings by a cam, a pressure spring, a lever and a seedling pushing rod together. Firstly, after the seedling claw is inserted into soil, the absolute movement track of the seedling claw can form a jack opening in the soil, and if slurry cannot fill a jack in time, seedling floating and seedling falling can be caused; and secondly, the seedling pushing rod has a seedling pushing action and then leaves the soil, so that a pit is left in the soil, the periphery of the root of the seedling is not in immediate and full contact with soil, if the water in the rice field is too much and the mud is not backfilled timely, the uprightness of the seedling is influenced, the pit is too large, the phenomena of seedling falling and seedling floating are also caused, and particularly, the phenomena that the soil at the concave part of the ground is shallow are most obvious, so that the yield of the rice is influenced.
Aiming at the defects in the prior art, the invention aims to provide a rice seedling shallow planting and transplanting method, which shortens the seedling green-turning period, improves the tillering quality and improves the rice yield. Therefore, the invention also provides a transplanter planting arm for realizing the swing planting method.
The basic thought of the shallow planting and arranging method of the rice seedlings is as follows: according to the agricultural production requirements of rice, shallow planting and arranging planting are carried out on rice seedlings, the planting depth of the common blanket-shaped seedlings is 0.5-2cm, the planting depth cannot be lower than 0.5cm in order to avoid the phenomena of scattered seedlings, floating seedlings and falling seedlings, and the planting depth of the pot blanket-shaped seedlings is smaller than 2/3 of the height of the pot.
The cultivation method mainly comprises two processes: firstly, the seedling claw presses the seedling root into the soil, and secondly, the seedling claw retracts to remove the seedling to complete the transplanting.
When the planting arm is put in place, the planting arm can be divided into the following two conditions according to the types of seedlings:
(1) when the potted blanket seedlings are planted, in order to ensure the uprightness of the seedlings, the seedling claws and the horizontal plane where the slurry layer is located form a certain angle, the downward movement is stopped when the tips of the seedling claws are a certain distance away from the slurry layer, the seedling claws and the seedling blocking pieces do not enter the soil, and at the moment, the seedling claws press the potted bodies of the seedlings into the slurry layer. When the bowl body of the seedling reaches the required depth, the seedling claw of the planting arm retracts rapidly until the claw tip of the seedling claw is flush with the seedling blocking piece of the fixedly-mounted combined seedling blocking device, and the seedling blocking piece takes off the seedling claw from the seedling, so that the transplanting of the rice seedling is completed. The shallow planting of the rice pot seedlings is realized, and the jack opening generated by inserting the seedling claws into soil and the pit generated by pushing the seedling by the seedling pushing rod in the traditional mechanical seedling planting are avoided.
(2) When the common blanket is planted, in order to ensure the uprightness of the seedlings, the seedling claws form a certain angle with the horizontal plane where the mud layer is located, the seedling claws are inserted into the mud layer, and the roots of the seedlings are pressed into the mud layer. When the roots of the seedlings reach the required depth, the seedling claws of the planting arms retract rapidly until the tips of the seedling claws are flush with the seedling blocking pieces of the fixedly-mounted combined seedling blocking device, and the seedling blocking pieces take off the seedling claws of the seedlings to finish the transplanting of the rice seedlings. Realizes the shallow planting of common blanket-shaped rice seedlings and avoids pits generated by the seedling pushing of a traditional mechanical seedling transplanting and pushing rod.
The seedling claw retracting planting arm drives the lever swing arm through the cam, and the lever swing arm drives the combined type telescopic seedling claw compression spring to realize the stretching of the seedling claw and generate relative motion with the fixed combined type seedling stopper. The seedling claws extend out when the seedlings are taken, separated and transported, and the seedling claws retract quickly after the roots of the seedlings are buried to reach the required depth during transplanting, thereby realizing the transplanting of the rice seedlings. During the return stroke, the seedling claw slowly extends out.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a rice seedling shallow planting swing planting method and a seedling claw retracting type planting arm.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a seedling claw retracting planting arm comprises: the planting arm mechanism, the combined type telescopic seedling claw 7, the combined type seedling stopper 10, the spring 14, the spring retainer ring 15, the connecting seat 26 and the seedling stopper rod base 25;
the seedling claw retraction type planting arm is fixedly connected with the planet wheel of the rotary box through a connecting seat 26;
the planting arm mechanism comprises: cam mechanism, plant arm casing 5, plant arm lid 6, toper lubricating-oil nozzle 21, oil pipe plug 20, deep groove ball bearing 23, bush 27, dust protection oil blanket 22 and the bearing cover 24 of permeating, cam mechanism includes: a lever swing arm 17 and a cam shaft 18;
the planting arm cover 6 is connected with the planting arm shell 5 through a screw, a conical lubricating oil nozzle 21 is arranged at the top of the planting arm cover 6, and the oil pipe plug 20 is positioned behind the conical lubricating oil nozzle 21 and is arranged on the planting arm shell 5; the camshaft 18 is arranged in the planting arm shell 5 and fixedly connected with the rotary box, the camshaft 18 is provided with a deep groove ball bearing 23, and the end surface of the deep groove ball bearing 23 is provided with a bearing through cover 24;
the left end of a lever swing arm 17 is connected with the upper end of the combined type telescopic seedling claw 7 through a chain fixing seat 16, the right part of the lever swing arm 17 is arranged on the planting arm shell 5 through a pin shaft 19, and the top end of the lever swing arm 17 is contacted with a cam shaft 18;
a seedling blocking rod base 25 is arranged behind the planting arm shell 5, and the combined seedling blocking device 10 is fixedly arranged on the seedling blocking rod base 25;
the combined type telescopic seedling claw 7 is positioned in the planting arm shell 5 and is arranged in parallel with the combined type seedling stopper 10, the spring retainer ring 15 is arranged at the tail end of the combined type telescopic seedling claw 7, the spring 14 is arranged on the combined type telescopic seedling claw 7, one end of the spring 14 is supported on the planting arm shell 5, and the other end of the spring 14 is supported on the spring retainer ring 15;
the front end of the planting arm shell 5 is provided with a bush 27, and the dustproof oil seal 22 is arranged in the bush 27.
On the basis of the scheme, the combined type telescopic seedling claw 7 comprises: the seedling claw 8 welds and is provided with two claw points on the seedling claw shaft 9, two claw points are provided with two claw points on the seedling claw 8, and two claw points are the splayed mouth and fall the point, seedling claw shaft 9 end is equipped with screw thread and round pin shaft hole.
On the basis of the scheme, the combined seedling stopper 10 comprises: the seedling blocking device comprises a seedling blocking piece 11, a seedling blocking device shaft 13 and a fixing plate 12, wherein the seedling blocking piece 11 is welded on the seedling blocking device shaft 13, and the seedling blocking device shaft 13 is welded on the fixing plate 12.
On the basis of the scheme, the seedling blocking piece 11 is in an irregular trapezoid shape, two round holes are formed in the fixing plate 12, and the fixing plate is fixedly arranged on a seedling blocking rod base 25 below the planting arm shell 5 through two bolts.
On the basis of the scheme, the left end of the lever swing arm 17 is connected with a pin shaft hole arranged at the tail end of the seedling claw shaft 9 through a chain fixing seat 16, and the spring retainer ring 15 is arranged on a thread arranged at the tail end of the seedling claw shaft 9.
On the basis of the scheme, the clearance between the seedling blocking piece 11 and the seedling claw 8 is less than 0.1mm, so as to prevent the seedlings 1 or weeds and the like from being clamped in the middle.
On the basis of the above scheme, the camshaft 18 is a cam and shaft integrated type, the cam corner is divided into a near repose angle, a push stroke motion angle, a far repose angle and a return stroke motion angle, wherein the return stroke motion angle is 0 °, and the top end of the lever swing arm 17 can move along the contour curve of the cam to realize quick return motion, and the lever swing arm is a sharp return concave part 28: when the top end of the lever swing arm 17 moves from the profile curve of the cam distal angle of repose to the profile curve of the return stroke angle, the cam mechanism snaps back under the action of spring force because the return stroke angle is 0 °.
The rice seedling shallow planting swing planting method applying the seedling claw retracting planting arm comprises the following steps: seedling taking, seedling separating and seedling conveying stages; a swing planting stage and a return stage;
seedling taking, seedling separating and seedling conveying stages: the contact point of the top end of the lever swing arm 17 and the cam is positioned on the contour curve of the cam far angle of repose, the spring 14 is in a compressed state, the combined telescopic seedling claw 7 is in an extended state, and the seedling blocking piece 11 and the end part of the seedling claw 8 keep a certain distance and are relatively static;
a cultivation stage: the depth of the water layer 2 in the rice field is kept to be 1.5-2.0cm, and the following two conditions are divided according to the types of the seedlings 1:
(1) when the potted blanket seedlings are planted, in order to ensure the uprightness of the seedlings 1, the included angles of 60-85 degrees are formed between the seedling claws 8 and the horizontal plane of the slurry layer 3, the seedling claws 8 and the seedling blocking pieces 11 do not penetrate into the soil, and the seedling claws 8 press the potted bodies 4 of the seedlings 1 into the slurry layer 3; when the pot body 4 of the seedling 1 reaches the required depth, the distance from the claw tip of the seedling claw 8 to the mud layer 3 is the distance from the upper surface of the pot body 4 to the mud layer 3; the contact point of the top end of the lever swing arm 17 and the cam is moved from the contour curve of the cam far angle of repose to the contour curve of the return motion angle, because the return motion angle is 0 degrees, the cam mechanism returns rapidly, the spring 14 is loosened, the spring force pushes the spring retainer ring 15 to retract the seedling claw 8 rapidly until the end part of the seedling claw 8 is flush with the seedling stopper piece 11, and the seedling stopper piece 11 takes off the seedling 1 from the seedling claw 8;
(2) when the common blanket-shaped seedlings are planted, in order to ensure the uprightness of the seedlings 1, an included angle of 60-85 degrees is formed between each seedling claw 8 and the horizontal plane of the slurry layer 3, the seedling claws 8 are inserted into the slurry layer 3, the roots of the seedlings 1 are pressed into the slurry layer 3 by the seedling claws 8, when the roots of the seedlings 1 reach the required depth, the contact points of the top ends of the lever swing arms 17 and the cam move to the profile curve of a return stroke motion angle from the profile curve of the cam far-end angle of repose, the return stroke motion angle is 0 degrees, the cam mechanism returns rapidly, the springs 14 are loosened, the spring force pushes the spring retainer rings 15 to retract the seedling claws 8 rapidly until the end parts of the seedling claws 8 are flush with the seedling blocking pieces 11, and the seedling blocking pieces 11 flush the seedlings 1 from the seedling claws 8;
and (3) a return stage: in order to prevent the seedling claw 8 from being brought back to the planted seedling 1, in the initial stage of the return stroke, the seedling claw 8 does not extend out and keeps still with the seedling blocking piece 11, and the contact point of the top end of the lever swing arm 17 and the cam is at the contour curve of the approximate repose angle of the cam. When the seedling claw retracting planting arm rises to a certain height, the contact point of the top end of the lever swing arm 17 and the cam moves from the contour curve of the near repose angle of the cam to the contour curve of the push stroke motion angle, the lever swing arm 17 drives the seedling claw shaft 9 connected with the lever swing arm through the chain fixing seat 16, the spring retainer ring 15 arranged on the seedling claw shaft 9 starts to compress the spring 14, the combined type telescopic seedling claw 7 gradually extends out, and when the contact point of the top end of the lever swing arm 17 and the cam reaches the contour curve of the far repose angle of the cam, the distance between the seedling stopper piece 11 and the end part of the seedling claw 8 is gradually increased until the original distance;
the combined telescopic seedling claw 7 and the combined seedling stopper 10 generate relative motion and are carried out in a staggered way, and each time the seedling is placed and planted, a cycle period is completed.
On the basis of the scheme, when the potted blanket seedlings are planted, the planting depth of the potted blanket seedlings is less than 2/3 of the height of the potted 4; when the common blanket-shaped seedlings are planted, the planting depth of the common blanket-shaped seedlings is 0.5-2 cm.
On the basis of the scheme, in the seedling taking, separating and transporting stages, the distance between the seedling blocking piece 11 and the end part of the seedling claw 8 is kept between 18 and 20 mm; in the return stroke stage, the distance between the seedling blocking piece 11 and the end part of the seedling claw 8 is gradually enlarged to 18-20 mm;
the method not only realizes the shallow planting of rice seedlings, but also avoids jack openings generated by inserting seedling claws of the traditional machine-transplanted seedling into soil and soil pits generated by pushing the seedling pushing rod when planting the pot blanket-shaped seedlings, and avoids pits generated by pushing the seedling by the traditional machine-transplanted seedling pushing rod when planting the common blanket-shaped seedlings.
When the transplanting mechanism works, the power is transmitted to the planting arms through the rotary box, the combined type telescopic seedling claw 7 and the combined type seedling blocking device 10 generate relative motion and carry out staggered movement, and one cycle is completed every time the transplanting is carried out, and the motion of the combined type telescopic seedling claw 7 is realized through the cam shaft 18, the lever swing arm 17 and the spring 14. When the convex part of the cam shaft 18 jacks up the top end of the lever swing arm 17, the other end of the lever swing arm 17 drives the seedling claw shaft 9 downwards, the spring 14 slowly compresses, the seedling claw 8 gradually extends out, the claw tip of the seedling claw 8 and the seedling blocking piece 11 are pulled apart by a distance of 18-20mm, a space is reserved for the seedling to be taken, and then the seedling is kept relatively static. When the quick return concave part 28 of the cam is aligned with the top end of the lever swing arm 17, a gap is instantly formed between the top end of the lever swing arm 17 and the cam, the spring 14 is loosened, the spring force pushes the spring retainer ring 15 to quickly retract the seedling claw 8, the claw tip of the seedling claw 8 is flush with the seedling blocking piece 11, and the seedling blocking piece 11 takes off the seedling 1 from the seedling claw 8.
The invention has the beneficial effects that:
the shallow planting method of the rice seedlings and the planting arm with the retractable seedling claw mainly comprise a shallow planting method of the rice seedlings and the planting arm with the retractable seedling claw, the shallow planting of the rice seedlings is realized, the agricultural production requirements of the rice are met, jack openings generated when the seedling claw of the traditional machine-transplanted seedlings is inserted into soil and soil pits generated when the seedling pushing rod pushes the seedlings are avoided when the pot-body blanket-shaped seedlings are planted, pits generated when the seedling pushing rod pushes the seedlings are avoided when the common blanket-shaped seedlings are planted, the verticality of the seedlings after planting is ensured, the seedlings are prevented from floating and falling due to the vertical planting, and the yield of the rice is improved.
The planting arm of the invention is suitable for a riding type transplanter adopting a front-inserting mode, and the planting arm of the original transplanter is replaced, so that shallow planting and arranging of rice seedlings can be realized, and the problems of idle and waste of the existing equipment caused by new technology popularization are avoided.
Drawings
The invention has the following drawings:
FIG. 1 is a three-dimensional schematic view of a planting arm of the present invention;
FIG. 2 is a cross-sectional three-dimensional schematic view of a planting arm of the present invention;
FIG. 3 is a three-dimensional schematic view of the combined type retractable seedling claw of the present invention;
FIG. 4 is a three-dimensional schematic view of the combined seedling stopper of the present invention;
FIG. 5 is a three-dimensional schematic view of a camshaft of the present invention;
FIG. 6 is a three-dimensional schematic view of a lever swing arm of the present invention;
FIG. 7 is a three-dimensional schematic view of the seedling bowl body burying during the swing planting stage of the present invention;
FIG. 8 is a three-dimensional schematic view of the present invention showing the claw retracting and seedling-releasing during the swing-planting stage;
reference numerals:
1. seedling, 2, water layer, 3, mud layer, 4, bowl body, 5, planting arm shell, 6, planting arm cover, 7, combined telescopic seedling claw, 8, seedling claw, 9, seedling claw shaft, 10, combined seedling blocking device, 11, seedling blocking piece, 12, fixing plate, 13, seedling blocking shaft, 14, spring, 15, spring retainer ring, 16, chain fixing seat, 17, lever swing arm, 18, cam shaft, 19, pin shaft, 20, oil pipe plug, 21, conical lubricating oil nozzle, 22, dustproof oil seal, 23, deep groove ball bearing, 24, bearing through cover, 25, seedling blocking rod base, 26, connecting seat, 27, bush, 28, quick return concave part, 25
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 to 8.
The invention aims to provide a rice seedling shallow planting arranging and planting method and a planting arm with retractable seedling claws, which can carry out shallow planting on rice seedlings, avoid jack openings generated by inserting the seedling claws of the traditional machine-transplanted seedlings into soil and soil pits generated by pushing the seedlings of a seedling pushing rod when arranging and planting pot blanket-shaped seedlings, avoid pits generated by pushing the seedlings of the traditional machine-transplanted seedling pushing rod when arranging and planting common blanket-shaped seedlings,
a shallow planting and arranging method for rice seedlings and a planting arm with retractable seedling claws are suitable for planting different types of rice seedlings, and the following working process takes a large-pot blanket-shaped rice seedling as an example for detailed description.
Before placing and planting, the water layer 2 of the rice field is kept to be 1.5-2.0cm, according to the size of the rice large pot blanket seedling raising tray and the thickness of covering soil, the height of a pot 4 of the large pot blanket seedling is 1.9-2.3cm, the planting depth is smaller than 2/3 of the height of the pot 4, and therefore the depth of the pot 4 in the soil is 0-1.5 cm.
The rice seedling shallow planting and transplanting method comprises the following steps: seedling taking, seedling separating and seedling conveying stages; a planting stage and a return stage.
When the seedling claw retraction type planting arm works, the rotary box transmits power to the seedling claw retraction type planting arm, the seedling claw retraction type planting arm rotates along with a planet wheel of the rotary box fixedly connected with the seedling claw retraction type planting arm and revolves around a sun wheel, the cam shaft 18 is installed in the planting arm shell 5 and fixedly connected with the rotary box, the planting arm rotates around the cam shaft 18, and a contact point of the top end of the lever swing arm 17 and the cam moves along the contour curve of the cam.
When the seedling is taken, separated and transported, the contact point of the top end of the lever swing arm 17 and the cam is positioned on the contour curve of the cam far repose angle, the spring 14 is in a compressed state, the combined telescopic seedling claw 7 is in an extending state, and the seedling blocking piece 11 and the claw tip of the seedling claw 8 keep a distance of 18-20mm and are relatively static.
During the transplanting stage, the contact point of the top end of the lever swing arm 17 and the cam is firstly positioned on the contour curve of the cam far repose angle. In order to ensure the uprightness of the seedlings 1, an included angle of 60-85 degrees is formed between the seedling claw 8 and the horizontal plane of the slurry layer 3, the downward movement is stopped when the distance from the claw tip to the slurry layer 3 is 0.8-2.3cm, the specific distance can be realized by adjusting an transplanting depth adjusting device of a rice transplanter, the seedling claw 8 and the seedling blocking piece 11 do not enter the soil, and at the moment, the seedling claw 8 presses the pot body 4 into the slurry layer 3. When the bowl body 4 reaches the required depth, the contact point of the top end of the lever swing arm 17 and the cam moves from the contour curve of the far angle of repose of the cam to the contour curve of the return motion angle, the return motion angle is 0 degrees, the cam mechanism makes a quick return, the spring 14 is loosened, the spring force pushes the spring retainer ring 15 to quickly retract the seedling claw 8 until the claw tip of the seedling claw 8 is flush with the seedling stopper piece 11, and the seedling stopper piece 11 takes off the seedling 1 from the seedling claw 8.
In the return stage, in order to prevent the seedling claw 8 from being brought back to the planted seedling 1, in the initial stage of the return, the seedling claw 8 does not extend out firstly and keeps still with the seedling blocking piece 11, and at the moment, the contact point of the top end of the lever swing arm 17 and the cam is in the contour curve of the approximate repose angle of the cam. When the seedling claw retracting planting arm rises to a certain height, the contact point of the top end of the lever swing arm 17 and the cam moves from the contour curve of the near repose angle of the cam to the contour curve of the push stroke motion angle, the lever swing arm 17 drives the seedling claw shaft 9 connected with the lever swing arm through the chain fixing seat 16, the spring retainer ring 15 arranged on the seedling claw shaft 9 starts to compress the spring 14, the combined type telescopic seedling claw 7 gradually extends out, and when the contact point of the top end of the lever swing arm 17 and the cam reaches the contour curve of the far repose angle of the cam, the distance between the seedling retaining piece 11 and the claw tip of the seedling claw 8 is increased to 18-20 mm.
The combined telescopic seedling claw 7 and the combined seedling stopper 10 generate relative motion and are carried out in a staggered way, and each time the seedling is placed and planted, a cycle period is completed.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Those not described in detail in this specification are within the skill of the art.
Claims (7)
1. A seedling claw retracting planting arm is characterized by comprising: a planting arm mechanism, a combined type telescopic seedling claw (7), a combined type seedling blocking device (10), a spring (14), a spring retainer ring (15), a connecting seat (26) and a seedling blocking rod base (25);
the seedling claw retracting planting arm is fixedly connected with the planet wheel of the rotary box through a connecting seat (26);
the planting arm mechanism comprises: cam mechanism, plant arm casing (5), plant arm lid (6), toper lubricating-oil nozzle (21), oil pipe plug (20), deep groove ball bearing (23), bush (27), dust protection oil blanket (22) and bearing pass through lid (24), cam mechanism includes: a lever swing arm (17) and a cam shaft (18);
the planting arm cover (6) is connected with the planting arm shell (5) through a screw, a conical lubricating oil nozzle (21) is arranged at the top of the planting arm cover (6), and the oil pipe plug (20) is positioned behind the conical lubricating oil nozzle (21) and is arranged on the planting arm shell (5); the camshaft (18) is installed in the planting arm shell (5) and fixedly connected with the rotary box, the camshaft (18) is provided with a deep groove ball bearing (23), and the end surface of the deep groove ball bearing (23) is provided with a bearing through cover (24);
the left end of a lever swing arm (17) is connected with the upper end of a combined type telescopic seedling claw (7) through a chain fixing seat (16), the right part of the lever swing arm (17) is arranged on a planting arm shell (5) through a pin shaft (19), and the top end of the lever swing arm (17) is contacted with a cam shaft (18);
a seedling blocking rod base (25) is arranged behind the planting arm shell (5), and the combined seedling blocking device (10) is fixedly arranged on the seedling blocking rod base (25);
the combined type telescopic seedling claw (7) is positioned in the planting arm shell (5) and is arranged in parallel with the combined type seedling stopper (10), the spring retainer ring (15) is arranged at the tail end of the combined type telescopic seedling claw (7), the spring (14) is arranged on the combined type telescopic seedling claw (7), one end of the spring (14) is supported on the planting arm shell (5), and the other end of the spring (14) is supported on the spring retainer ring (15);
the front end of the planting arm shell (5) is provided with a bushing (27), and the dustproof oil seal (22) is arranged in the bushing (27);
the combined type telescopic seedling claw (7) comprises: the seedling claw (8) is welded with the seedling claw shaft (9), two claw tips are arranged on the seedling claw (8), the two claw tips are splayed and inverted, and the tail end of the seedling claw shaft (9) is provided with a thread and a pin shaft hole;
the combined seedling stopper (10) comprises: the seedling blocking device comprises seedling blocking pieces (11), a seedling blocking device shaft (13) and a fixing plate (12), wherein the seedling blocking pieces (11) are welded on the seedling blocking device shaft (13), and the seedling blocking device shaft (13) is welded on the fixing plate (12);
camshaft (18) are cam and axle integral type, and the cam corner divide into near angle of repose, pushes away stroke motion angle, far angle of repose and return stroke motion angle, and wherein return stroke motion angle is 0, for sharp concave part (28) that returns, and the top of lever swing arm (17) can be followed the profile curve removal of cam and realized sharp motion that returns.
2. The seedling claw retracting type planting arm as claimed in claim 1, wherein the seedling blocking piece (11) is irregular trapezoid, and the fixing plate (12) is provided with two round holes and is fixedly mounted on a seedling blocking rod base (25) below the planting arm shell (5) through two bolts.
3. The seedling claw retracting planting arm as claimed in claim 2, characterized in that the left end of the lever swing arm (17) is connected with a pin shaft hole arranged at the tail end of the seedling claw shaft (9) through a chain fixing seat (16), and the spring retainer ring (15) is installed on a thread arranged at the tail end of the seedling claw shaft (9).
4. The seedling claw retracting planting arm as claimed in claim 3, wherein the clearance between the seedling blocking piece (11) and the seedling claw (8) is less than 0.1mm so as to avoid clamping seedlings (1) or weeds in the middle.
5. A rice seedling shallow planting swing planting method, which applies the seedling claw retraction type planting arm as claimed in any one of claims 1 to 4, and is characterized in that: comprises the stages of seedling taking, seedling separating and seedling conveying; a swing planting stage and a return stage;
seedling taking, seedling separating and seedling conveying stages: the contact point of the top end of the lever swing arm (17) and the cam is positioned on the contour curve of the cam far angle of repose, the spring (14) is in a compressed state, the combined telescopic seedling claw (7) is in an extended state, and the seedling blocking piece (11) keeps a certain distance from the end part of the seedling claw (8) and is relatively static;
a cultivation stage: keeping the depth of the water layer (2) to be 1.5-2.0cm in the rice field; the following two cases are classified according to the type of seedling (1):
when the potted blanket seedlings are planted, in order to ensure the uprightness of the seedlings (1), the included angle of 60-85 degrees is formed between the seedling claws (8) and the horizontal plane of the slurry layer (3), the seedling claws (8) and the seedling blocking pieces (11) do not penetrate into the soil, and the seedling claws (8) press the potted bodies (4) of the seedlings (1) into the slurry layer (3); when the bottom of the pot body (4) of the seedling (1) reaches the required depth, the distance from the claw tip of the seedling claw (8) to the mud layer (3) is the distance from the upper surface of the pot body (4) to the mud layer (3); the contact point of the top end of the lever swing arm (17) and the cam is moved from the contour curve of the cam far-repose angle to the contour curve of the return motion angle, the return motion angle is 0 degrees, the cam mechanism returns rapidly, the spring (14) is released, the spring force pushes the spring retainer ring (15) to retract the seedling claw (8) rapidly until the end part of the seedling claw (8) is flush with the seedling blocking piece (11), and the seedling blocking piece (11) takes off the seedling (1) from the seedling claw (8);
when the common blanket-shaped seedlings are planted in a swinging mode, in order to ensure the uprightness of the seedlings (1), an included angle of 60-85 degrees is formed between a seedling claw (8) and the horizontal plane of a slurry layer (3), the seedling claw (8) is inserted into the slurry layer (3), the root of each seedling (1) is pressed into the slurry layer (3) by the seedling claw (8), when the root of each seedling (1) reaches the required depth, the contact point of the top end of a lever swing arm (17) and a cam moves to the profile curve of a return stroke motion angle from the profile curve of the cam far repose angle, as the return stroke motion angle of the cam mechanism is 0 degree, a spring (14) is loosened, the spring force pushes a spring retainer ring (15) to rapidly retract the seedling claw (8) until the end part of the seedling claw (8) is flush with a seedling blocking piece (11), and the seedling blocking piece (11) releases the seedling (1) from the seedling claw (8);
and (3) a return stage: in order to prevent the seedling claws (8) from being brought back to the placed seedlings (1), the seedling claws (8) do not extend out at the initial stage of return stroke, keeping the seedling blocking piece (11) still, at the moment, the contact point of the top end of the lever swing arm (17) and the cam is positioned on the contour curve of the approximate repose angle of the cam, when the seedling claw retracting type planting arm rises to a certain height, the contact point of the top end of the lever swing arm (17) and the cam moves from the contour curve of the near repose angle of the cam to the contour curve of the push stroke motion angle, the lever swing arm (17) drives a seedling claw shaft (9) connected with the lever swing arm through a chain fixing seat (16), a spring retainer ring (15) arranged on the seedling claw shaft (9) starts to compress a spring (14), the combined type telescopic seedling claw (7) gradually extends out, and when the contact point of the top end of the lever swing arm (17) and the cam reaches the contour curve of the far repose angle of the cam, the distance between a seedling blocking piece (11) and the end part of the seedling claw (8) is gradually increased until the original distance is reached;
the combined telescopic seedling claw (7) and the combined seedling blocking device (10) generate relative motion and are carried out in a staggered way, and each swing planting completes one cycle.
6. The rice seedling shallow planting swing planting method as claimed in claim 5, characterized in that when the potted blanket seedlings are planted, the planting depth of the potted blanket seedlings is less than 2/3 of the height of the pots (4); when the common blanket-shaped seedlings are planted, the planting depth of the common blanket-shaped seedlings is 0.5-2 cm.
7. The shallow planting and arranging method for the rice seedlings as claimed in claim 5, wherein in the seedling taking, separating and transporting stages, the distance between the seedling blocking piece (11) and the end of the seedling claw (8) is kept between 18 mm and 20 mm; in the return stroke stage, the distance between the seedling blocking piece (11) and the end part of the seedling claw (8) is gradually increased to 18-20 mm.
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| CN115152375B (en) * | 2022-07-11 | 2024-02-13 | 浙江工业大学 | Mechanical trigger clamping jaw device |
| CN117099541B (en) * | 2023-08-23 | 2024-06-11 | 中国农业大学 | High-speed cutting and orderly throwing-planting machine and cutting and throwing-planting method for blanket-shaped rice seedlings |
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