JP6904097B2 - Seedling transplanter - Google Patents

Description

The present invention relates to a seedling transplanting machine in which a planting section presses and runs on a ridge surface while planting seedlings.

In the seedling transplanting machine shown in Prior Patent Document 1, the transfer device sequentially conveys the seedlings, and the planting clutch repeatedly turns on and off at predetermined intervals, so that the seedling planting device moves forward and backward to take out the seedlings from the pot seedlings. After that, it penetrates into the soil and is planted.

At this time, left and right suppression wheels are provided around the planting position of the seedlings to push the lifted soil evenly.
The left and right compression wheels are connected to the left and right and urged evenly on the left and right with a single compression rod to spread the soil appropriately and move up and down according to the unevenness of the ridge surface to prevent damage due to load. It is a structure to do.

In addition, a plate-shaped ridge sensor that follows the unevenness of the ridge surface and touches the ground is supported in front of the seedling planting device so that it can rotate up and down, and the average height of the ridge surface within the sensor width range is detected to plant seedlings. The left and right running wheel support heights are changed and controlled so that the attachment depth is kept constant.

Japanese Patent No. 5939211

However, if the left and right heights of the ridges are different, the suppression ring on one side will be separated from the ridge surface, the soil on the other side of the seedlings will not be leveled, the seedlings will fall, and the growth will be delayed due to the decrease in soil temperature. Occurs.

In addition, since the ridge sensor has a plate shape with a constant width, the soil on the ridge is carried forward by the forward movement of the aircraft, and the ridge sensor is deformed by the load, making it impossible to accurately detect the unevenness of the ridge. In addition to the problem that the seedling planting depth is inappropriate, there is a problem that the surface of the ridge is roughened, resulting in poor planting.

An object of the present invention is to provide a seedling transplanting machine capable of leveling the ridges on both the left and right sides of the seedling with the same pressure, even if the ridges on which the seedlings are planted have a left-right head. ..

The invention according to claim 1 is a seedling transport device (2) for distributing and transporting seedlings to a predetermined position, a seedling planting device (3) for planting the transported seedlings in ridges, and a root of the planted seedlings. In a seedling transplanting machine equipped with a suppression device (4) for leveling the ridges of the seedlings at a predetermined height.
The suppression device (4) includes a suppression member (11, 11) arranged on the left and right of the planting position, left and right support arms (12, 12) for supporting the left and right suppression members (11, 11), and these left and right. It is composed of a connecting plate (13) for connecting the support arms (12, 12) to the left and right, and a suppression rod (14) for connecting the connecting plate (13) so as to be downwardly biased.
The connecting plate (13) is provided with a shaft support (13a) equidistant from the left and right support arms (12, 12), and can be rotated left and right by the shaft support (13a) via a suppression rod (14). It is characterized in that shaft support portions (13a) are provided at a plurality of positions that are supported by the airframe and have different heights.

The invention according to claim 2 is a seedling transport device (2) for distributing and transporting seedlings to a predetermined position, a seedling planting device (3) for planting the transported seedlings in ridges, and a root of the planted seedlings. In the seedling transplanting machine provided with the suppression device (4) for leveling the ridges of the seedlings, the suppression device (4) includes the suppression members (11, 11) arranged on the left and right of the planting position and the left and right of these suppression devices. The left and right support arms (12, 12) that support the compression members (11, 11), the connecting plate (13) that connects the left and right support arms (12, 12) to the left and right, and the connecting plate (13). The connecting plate (13) is provided with a shaft support (13a) equidistant from the left and right support arms (12, 12). It is characterized by having an elongated hole 13b that is supported on the machine body via a compression rod (14) so as to be rotatable left and right by a branch portion (13a) and that the holding height position of the shaft support portion 13a can be slidably adjusted.

The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the rotating arm 21 is rotatably connected to the machine body and is rotatably connected to the ridge surface by the rotating arm 21. The ridge surface sensor S1 that detects the ridge surface height is configured by the roller 22 that is a rotating member, and the vehicle height is adjusted and controlled according to the ridge surface height detected by the ridge surface sensor S1 and the rotating arm 21. Is characterized in that the roller shaft support portions 22a are provided at a plurality of positions having different roller support lengths.

The invention according to claim 4 is the invention according to claim 3 , wherein a scraper 24 made of a thin rod-shaped member is provided in contact with the roller 22 to scrape off the adhering soil, and the scraper 24 is inclined in the width direction of the roller 22. It is characterized in that it is provided with an oblique portion 24a that scrapes the soil.

The invention according to claim 5 is the invention according to claim 1 or 2 , wherein the rotating arm 25 is rotatably connected to the machine body and is rotatably connected to the ridge surface by the rotating arm 25. A ridge surface sensor S2 that detects the ridge surface height is configured by a crawler belt mechanism 26 that is a rotating member, and the vehicle height is adjusted and controlled according to the ridge surface height detected by the ridge surface sensor S2. To do.

The invention according to claim 6 is the invention according to claim 3 or 5 , wherein the rotation detecting members 27 are provided on the rotating members 22 and 26 so that the moving distance on the ridge surface can be calculated, and the seedling planting apparatus. 3 is controlled by the control device C between the set stocks, and the operation interval of the seedling planting device 3 is compared between the moving distance by the rotation detection member 27 and the set stocks. If there is a difference, the seedling planting device 3 It is characterized in that the operation timing of is changed and controlled.

In the invention according to claim 1, the left and right compression members 11 and 11 are supported left and right by the connecting plates 13 via the left and right support arms 12 and 12, and the connecting plates 13 are supported by the left and right support arms 12 and 12. Since it is supported by the machine body via a compression rod 14 that is rotatably connected to the shaft support 13a equidistant from the left and right, the compression reaction forces of the left and right compression members 11 and 11 are balanced and the connection plate 13 is stable. Only in the case, the urging force of the suppression rod 14 acts, and therefore, the left and right suppression members 11 and 11 are balanced by the left and right rotation of the connecting plate 13 even due to the left-right head of the ridge surface and the like, and the ridges have the same suppression pressure. Since the surface can be suppressed, it is possible to prevent the seedlings from collapsing due to poor suppression and poor growth due to a drop in soil temperature.

In addition , depending on the height position of the shaft support portion 13a connecting the suppression rod 14, the left-right rotation width of the connection plate 13 increases toward the upper side, so that the suppression can be performed according to the degree of the left-right head of the ridge surface by selection. It becomes.

The invention according to claim 2, consolidated plate 13, since the coupling height of the suppression rods 14 right and left rotation width as it goes upward increases, the height position adjustment of the range of the elongated hole 13b, ridge surface Reliable suppression is possible according to the degree of left-right head.

In the invention according to claim 3 , in addition to the effect of the invention according to claim 1 or 2 , in the ridge surface sensor S1, the rotating arm 21 connected to the machine body causes the roller 22 which is a rotating member to be placed on the ridge surface. The roller 22 is towed so as to be able to follow the rolling motion, and the roller 22 rotates following the ridge surface without being pushed by the soil due to the resistance on the ridge surface. It is possible to maintain the ridge surface including the multi-film, and therefore, the vehicle height adjustment control based on the accurate ridge surface height enables planting of seedlings at a predetermined depth, and the roller support length is attached to the rotating arm 21. By providing a plurality of roller shaft support portions 22a having different ridges, the detection sensitivity of the ridge sensor S1 can be switched according to the condition of the ridges, so that stable vehicle height adjustment control becomes possible.

In the invention according to claim 4 , in addition to the effect of the invention according to claim 3 , since the scraper 24 made of a thin rod-shaped member is provided in contact with the roller 22, soil is less likely to be clogged between the scraper 24 and the roller 22. , The stop of the roller 22 due to the clogging that causes the soil pushing is prevented.
Further, since it is possible to prevent erroneous detection of the ridge surface height due to a change in the radius length of the roller 22 due to soil adhesion, vehicle height control accuracy is ensured and the planting depth of seedlings is stabilized.
Further, since the soil scraped off by the oblique portion 24a of the scraper 24 can be scraped to the side, excess soil is prevented from collecting near the planting position of the seedlings, and the planting depth is stabilized.

The invention according to claim 5, in addition to the effect of the invention according to claim 1 or claim 2, the crawler belt mechanism 26 is a rotating member connected to the pivot arm 25, without slipping ground the entire belt lower surface Since it rolls following the ridge surface, it is possible to control the vehicle height with high accuracy based on accurate ridge surface height detection without soil pushing, so it is necessary to secure the planting depth accuracy, which is the growth condition of seedlings. Can be done.

In the invention according to claim 6 , in addition to the effect of the invention according to claim 3 or 5, the rotation detection member of the ridge surface sensors S1 and S2 regarding the operation interval of the seedling planting device 3 by the operation control of the control device C. Since the operation timing is adjusted based on the movement distance of the aircraft calculated by 27, the distance between the plants can be secured with high accuracy, and as a result, the field is well ventilated and the environment where pests are less likely to occur is secured. In addition, it is possible to improve work efficiency by securing a space for people and work machines to move during work such as addition of work fertilizer during cultivation of crops, control work, thinning, fruit thinning, and harvesting.

Side view of seedling transplanter Top view of seedling transplanter Rear view of the suppression mechanism Suppression action diagram of the suppression mechanism Rear view of the main part of the suppression mechanism Side surface of the main part of the suppression mechanism Disassembled side view of the main part of the suppression mechanism Perspective view of roller type ridge sensor Rear view of ridge sensor with scraper Side view of the belt type ridge sensor Cross-sectional view of the support part of the belt type ridge sensor Longitudinal section of irrigation pump Top view of the main part of the crawler suspension Side view of the main part of the crawler suspension

An embodiment specifically configured based on the above technical idea will be described below with reference to the drawings. In the description, it is referred to as front-back, left-right, and front-rear with reference to the forward direction F of the seedling transplanter.

As shown in FIGS. 1 and 2, the seedling transplanting machine 1 provided with the suppression wheel of the present invention has the seedling planting machine 3 and the seedling planting machine 3 in the machine body whose vehicle height can be adjusted by the rear wheels 2 and 2. It is provided with a suppression mechanism 4, and the ridge sensor S secures the planting depth of the seedling planting machine 3 according to the height of the ridge, and the suppression mechanism 4 suppresses both sides of the planting position while traveling. In the illustrated example, as a two-row planting configuration, each type of seedling planting machine 3 and a suppression mechanism 4 are provided side by side on both sides of the machine frame B.

The seedling planting machine 3 is provided with a beak-shaped seedling planting body 3a that can be opened and closed so as to be able to move up and down. The mechanism 4 is configured by arranging the suppression rings 11 and 11, which are the left and right suppression members for pressing the ridge surfaces at the left and right sides of the planted seedling, behind the seedling planting machine 3.

In detail, as shown in FIG. 3 in the rear view of each of the suppression mechanisms 4, the suppression rod 14 is supported on the body frame B and can be urged downward by the spring 14a, and the suppression mechanism 4 is formed at the lower end of the suppression rod 14. A substantially inverted triangular connecting plate 13 is pivotally supported so as to be rotatable left and right, and the suppression wheels 11 and 11 can be rolled around at equidistant positions on the left and right sides of the shaft support portion 13a via the left and right support arms 12 and 12, respectively. Then, the urging force of the suppression rod 14 is balanced and distributed to the left and right suppression wheels 11 and 11 by the connecting plate 13.

In the suppression mechanism 4 configured in this way, as shown in the suppression action diagram of FIG. 4, even if the ridge surface U has a left-right head, the connecting plate 13 rotates left and right around the shaft support portion 13a to the left and right. Since the urging force is distributed to the suppression wheels 11 and 11 in a balanced manner, it is possible to suppress the left and right evenly with a single suppression rod 14, so that the seedlings fall due to one-sided suppression and grow due to a drop in soil temperature. Defects can be prevented.

Further, the connecting plate 13 rotates largely to the left and right in the upper connecting hole by switching the connecting height of the shaft support portion 13a of the suppression rod 14 by a plurality of connecting holes 13b ... provided in the vertical direction, and in the lower side. Since the rotation width becomes smaller, the balance sensitivity of the left and right compression wheels 11 and 11 can be changed.

(Stepless adjustment)
Next, another configuration example of the connecting plate 13 will be described. As shown in the enlarged rear view and the enlarged side view of the main part in FIGS. 5 and 6, the shaft support portion 13a of the suppression rod 14 is moved up and down along the elongated hole 13c. The height can be adjusted by sliding in the direction.

Specifically, as shown in the disassembled side view of the main part of FIG. 7, an adjustment slot 13c extending vertically at the center position of the connecting plate 13 and a shaft support of the suppression rod 14 at an arbitrary position within the range of the slot 13c. By configuring the 13a so that it can be fixed by a bolt or the like, it is possible to arbitrarily adjust the connecting position of the compression rod 14 within the range of the long hole 13c for adjustment while ensuring the left-right rotation of the connecting plate 13. As a result, the balance sensitivity of the left and right suppression wheels 11 and 11 can be finely changed.

(Rolling type ridge sensor)
Next, the rolling type ridge sensor S1 will be described.
As shown in FIG. 8, the rolling type ridge sensor S1 has a rotating arm 21 connected to the bottom of the machine body so as to be vertically rotatable, and the rotating arm 21 enables grounding and pulling on the ridge surface. The height of the ridge surface can be detected by the roller 22 which is a connected rotating member.

In the rolling type ridge surface sensor S1 configured in this way, the roller 22 which is a rotating member is pulled on the ridge surface so as to be able to follow the rolling by the rotating arm 21, and the roller 22 rotates due to the resistance on the ridge surface. However, since it follows and rolls on the ridge surface without pushing the soil, damage to the ridge surface sensor S1 due to the soil pushing load can be prevented, and the ridge surface including the multi-film can be maintained. Therefore, the height of the ridge surface can be maintained. It is possible to secure the planting depth and ridge suppression of seedlings by controlling the vehicle height based on the high-precision detection of.

Further, the ridge sensor S1 is configured by providing a plurality of roller shaft support portions 22a ... On the rotating arm 21 so that the roller support length can be switched, and the ridge surface sensor can be changed by changing the roller support length by selecting the roller shaft support portion 22a. Since the detection sensitivity of S1 can be switched, stable vehicle height adjustment control is possible according to the condition of the ridge surface U, and further, slip prevention is possible by improving the bite of the roller surface by lauret processing. ..

(Scraper)
The roller 22 of the ridge surface sensor S1 is provided with a scraper 24 made of a thin rod-shaped member such as a wire in contact with the surface thereof, so that the soil adhering to the roller 22 can be scraped off while suppressing the accumulation of soil on the scraper 24. Therefore, accurate detection of ridge height ensures vehicle height control accuracy, stabilizes the planting depth of seedlings, suppresses soil clogging in the scraper part, and prevents soil pushing due to roller rotation stop. it can.

Further, as shown in FIG. 9 as shown in the rear view of the ridge sensor with a scraper, the scraper 24 is provided with an oblique portion 24a and the soil is scraped in the width direction of the roller 22 to avoid the seedling planting position. Since the soil can be dropped, the planting depth of the seedlings can be stabilized, and by forming the entire scraper in a V shape, the scraped soil can be moved to both outer positions of the ridge sensor S1. Can be done.

(Belt type ridge sensor)
Next, the belt type ridge sensor S2 will be described.
As shown in FIG. 10, the belt-type ridge sensor S2 has a rotating arm 25 that is vertically rotatably connected to the bottom of the machine body and is connected to the ridge surface by the rotating arm 25 so that it can be towed to the ground. The height of the ridge surface can be detected by the belt mechanism 26 which is a rolling member.

As shown in FIG. 11, the rotating arm 25 is connected to the center of the crossing frame 26a of the belt mechanism 26 in a balance configuration so that the belt can be connected even if the ridge height setting is changed. The bottom surface of 26b can be grounded.

The belt mechanism 26 suppresses rotational resistance by loosely winding and supporting the crawler belt 26c around the belt frame, and since the belt surface bites into the ridge surface and follows the ground without slipping, it is accurate without inviting soil pushing. It is possible to detect the height of the ridge surface, and it is possible to secure the accuracy of the planting depth, which is the growth condition of the seedlings, by controlling the vehicle height with high accuracy.

Further, a rotation detection member 26d is provided on the sprocket of the crawler belt 26c so that the movement distance on the ridge surface can be calculated, and the seedling planting device 3 is operated and controlled between the set stocks separately determined, and the movement distance between them is also measured. If there is a difference, the operation timing of the seedling planting device 3 is changed.

By the above-mentioned planting control by the control device C, the seedling planting device 3 secures the inter-strain distance with high accuracy by adjusting the operation timing based on the movement distance of the machine calculated by the rotation detection member 26d of the rotating portion of the ridge sensor S2. As a result, the field is well ventilated, an environment where pests are less likely to occur is secured, and people are required to work during the cultivation of crops (addition of fertilizer, control work, thinning, fruit thinning, etc.) and at the time of harvesting. Since it is possible to secure a space for moving the work machine and the work machine, the work efficiency can be improved.

(Irrigation pump)
Next, the irrigation pump 31 will be described. As shown in FIG. 12, the irrigation pump 31 composed of the steel cylinder 32 and the piston 33 is provided with a zinc drain bolt 34 to form a cylinder. By configuring the drainage portion of 32, it is possible to suppress rust on the steel member due to the sacrificial anode effect of the zinc material, and the drain bolt 34 can be replaced as a consumable item for maintenance.

Further, the zinc pipe 35 is fitted on the outside so as to be in close contact with the cylinder 32 and cover the outer circumference thereof. The zinc pipe 35 can be brought into close contact with the outer periphery of the cylinder 32 by being configured so that the diameter can be expanded by a slit, and further, by conducting a conductive connection with the drain bolt 34, the entire cylinder 32 can be widely rust-proofed. it can.
The zinc material can be replaced with a metal such as aluminum, which has a higher ionization tendency than iron.

(Worker boarding section)
Next, the worker boarding section of the seedling transplanting machine will be described.
As shown in FIGS. 13 and 14, the plan view of the main part and the side view of the main part around the rear wheel of the seedling transplanter are shown in FIGS. 13 and 14, and the crawler frame 41a having a parallel link configuration in which the support height can be adjusted by rotating the rear wheel transmission case 6. , 41b, 41c are wound around the crawler 42 to support the rear part of the machine body, and the support ring 44a and the storage spring 44b are provided on the workbench 44 connected rearward from the crawler shaft 43 at the rear part of the ground contact to be foldable.

With the above configuration, the tension of the crawler 42 having a parallel link configuration is constant even by rotating the rear wheel transmission case 6 to adjust the vehicle height, so that stable running can be ensured, and the work table 44 can work. The operator can get on the vehicle in a standing posture as a step that makes it easy for the operator to get on and off by the rearward deployment operation.

At this time, the load of the operator is applied to the ground contact portion of the crawler 42 to increase the traction force, so that the running performance is improved, and the work table 44 is folded to the storage position by getting off, so that the machine body turns without any trouble. Is possible.

(Technical point)
The technical points of the seedling transplanting machine having the above configuration are summarized below.

First, the suppression device 4 includes the suppression members 11 and 11 arranged on the left and right of the planting position, the left and right support arms 12 and 12 for supporting the left and right suppression members 11 and 11, respectively, and the left and right support arms 12. , 12 are connected to the left and right, and a compression rod 14 for connecting the connecting plate 13 so as to be downwardly biased. The connecting plate 13 is equidistant from the left and right support arms 12, 12. By providing a support portion 13a and supporting the machine body via the suppression rod 14 so as to be rotatable left and right by the shaft support portion 13a, the left and right suppression members 11 and 11 are connected to the connecting plate 13 via the left and right support arms 12 and 12. The connecting plate 13 is supported to the left and right by the left and right support arms 12, and is supported by the machine body via a compression rod 14 that is rotatably connected to the shaft support portion 13a equidistant from the left and right support arms 12, 12. The urging force of the compression rod 14 acts only when the compression reaction forces of the left and right compression members 11 and 11 are balanced and the connecting plate 13 is stable. Since the left and right suppression members 11 and 11 are balanced by rotation and the ridge surface can be suppressed with the same suppression pressure, it is possible to prevent the seedlings from collapsing due to poor suppression and growth failure due to a drop in soil temperature or the like. ..

Secondly, the connecting plate 13 is provided with shaft support 13a at a plurality of positions having different heights to connect the compression rods 14, so that the connecting plate 13 can be rotated left and right toward the upper side depending on the height position of the selected shaft support 13a. Since the movement width becomes large, it is possible to suppress the ridge surface according to the degree of the left-right head of the ridge surface by selection.

Thirdly, the connecting plate 13 is provided with an elongated hole 13b whose holding height position of the shaft support portion 13a can be slidably adjusted, so that the lateral rotation width becomes larger as the connecting height position of the suppression rod 14 is higher, and the length becomes longer. By adjusting the height position within the range of the hole 13b, it is possible to surely suppress the pressure according to the degree of the left-right head of the ridge surface.

Fourth, the ridge height is detected by a rotating arm 21 that is rotatably connected to the machine body and a roller 22 that is a rotating member that is rotatably connected to the ridge surface by the rotating arm 21. The surface sensor S1 is configured, the vehicle height is adjusted and controlled according to the ridge surface height detected by the ridge surface sensor S1, and the rotating arm 21 has roller shaft support portions 22a at a plurality of positions having different roller support lengths. By providing, the rotating arm 21 connected to the machine body pulls the roller 22, which is a rotating member, so as to be able to follow the rolling on the ridge surface, and the roller 22 is not pushed by the resistance on the ridge surface. Since it rotates following the ridge surface, it is possible to prevent damage to the ridge surface sensor S1 due to the earth pushing load and to maintain the ridge surface including the multi-film. Therefore, vehicle height adjustment control based on the accurate ridge surface height By providing a plurality of roller shaft support portions 22a having different roller support lengths on the rotating arm 21, the ridge surface sensor S1 can be detected according to the condition of the ridge surface. Since the sensitivity can be switched, stable vehicle height adjustment control is possible.

Fifth, a scraper 24 made of a thin rod-shaped member is provided in contact with the roller 22 to scrape off the soil, and the scraper 24 is provided with an oblique portion 24a that is inclined in the width direction of the roller 22 to scrape the soil. Since soil is less likely to be clogged between the scraper 24 and the roller 22 due to the thin rod-shaped member, the roller 22 is prevented from stopping due to soil clogging that causes soil pushing, and the radius length of the roller 22 is changed due to soil adhesion. Since false detection of the ridge height can be prevented, vehicle height control accuracy is ensured and the planting depth of seedlings is stable.
Further, since the soil to be scraped off can be scraped to the side by the oblique portion 24a of the scraper 24, excess soil is prevented from collecting near the planting position of the seedlings, and the planting depth is stabilized.

Sixth, the height of the ridge surface is detected by a rotating arm 25 that is rotatably connected to the machine body and a crawler belt mechanism 26 that is a rotating member that is rotatably connected to the ridge surface by the rotating arm 25. The crawler belt mechanism 26, which is a rotating member connected to the rotating arm 25, is formed by forming the ridge surface sensor S2 and adjusting and controlling the vehicle height according to the ridge surface height detected by the ridge surface sensor S2. Since the entire lower surface of the belt is grounded and rolls following the ridges without slipping, highly accurate vehicle height control based on accurate ridge height detection without soil pressing is possible, so seedling growth conditions It is possible to secure the accuracy of the planting depth.

Seventh, rotation detecting members 27 are provided on the rotating members 22 and 26 so that the moving distance on the ridge surface can be calculated, and the seedling planting device 3 is operated and controlled between predetermined set stocks by the control device C. Regarding the operation interval of the seedling planting device 3, the operation control of the control device C is controlled by comparing the moving distance by the rotation detection member 27 and the set stocks and changing and controlling the operation timing of the seedling planting device 3 if there is a difference. Since the operation timing of the seedling planting device 3 is adjusted based on the movement distance of the machine calculated by the rotation detection members 27 of the ridge surface sensors S1 and S2, the distance between the plants is secured with high accuracy. As a result, the field is well ventilated, an environment where pests are less likely to occur is secured, and people are required to work during the cultivation of crops (addition of fertilizer, control work, thinning, fruit thinning, etc.) and at the time of harvesting. And the space for the work machine to move is secured, and the work efficiency can be improved.

1 Seedling transplanter 2 Seedling transfer device 3 Seedling planting device 4 Suppression device 11 Suppression member 12 Support arm 13 Connecting plate 13a Shaft branch 13b Long hole 14 Suppression rod 21 Rotating arm 22 Roller (rotating member)
22a Roller shaft support 24 Scraper 24a Skew part 25 Rotating arm 26 Crawler belt mechanism (rotating member)
27 Rotation detection member C Control device S1 Roller type ridge sensor S2 Belt type ridge sensor

Claims (6)

A seedling transport device (2) for distributing and transporting seedlings to a predetermined position, a seedling planting device (3) for planting the transported seedlings in ridges, and a suppression device for leveling the root ridges of the planted seedlings. In a seedling transplanting machine equipped with (4) and at a predetermined height
The suppression device (4) includes a suppression member (11, 11) arranged on the left and right of the planting position, left and right support arms (12, 12) for supporting the left and right suppression members (11, 11), respectively, and these. It is composed of a connecting plate (13) that connects the left and right support arms (12, 12) to the left and right, and a compression rod (14) that connects the connecting plate (13) so that it can be biased downward.
The connecting plate (13) is provided with a shaft support (13a) equidistant from the left and right support arms (12, 12), and the pressure rod (14) can be rotated left and right by the shaft support (13a). through supported on the airframe, and seedling transplantation machine you wherein the height is provided with the shaft support (13a) in different positions. A seedling transport device (2) for distributing and transporting seedlings to a predetermined position, a seedling planting device (3) for planting the transported seedlings in ridges, and a suppression device for leveling the root ridges of the planted seedlings. In a seedling transplanting machine equipped with (4) and at a predetermined height
The suppression device (4) includes a suppression member (11, 11) arranged on the left and right of the planting position, left and right support arms (12, 12) for supporting the left and right suppression members (11, 11), respectively, and these. It is composed of a connecting plate (13) that connects the left and right support arms (12, 12) to the left and right, and a compression rod (14) that connects the connecting plate (13) so that it can be biased downward.
The connecting plate (13) is provided with a shaft support portion (13a) equidistant from the left and right support arms (12, 12), and the suppression rod (14) can be rotated left and right by the shaft support portion (13a). through supported on the airframe, and the shaft support (13a) seedling transplanter you further comprising a slide adjustable long hole (13b) of the holding height position of. A rotating arm (21) rotatably connected to the airframe and
A ridge sensor (S1) that detects the height of the ridge is configured by a roller (22), which is a rotating member connected to the ridge so that it can be towed to the ground by the rotating arm (21).
The vehicle height is adjusted and controlled according to the ridge height detected by the ridge sensor (S1), and the vehicle height is adjusted and controlled.
The seedling transplanting machine according to claim 1 or 2 , wherein the rotating arm (21) is provided with a roller shaft support (22a) at a plurality of positions having different roller support lengths. A scraper (24) made of a thin rod-shaped member is provided in contact with the roller (22) to scrape off the adhering soil.
The seedling transplanting machine according to claim 3 , wherein the scraper (24) includes a slanted portion (24a) that is inclined in the width direction of the roller (22) to scrape soil. A rotating arm (25) rotatably connected to the airframe and
A ridge sensor (S2) that detects the height of the ridge is configured by a crawler belt mechanism (26), which is a rotating member connected to the ridge so that it can be towed to the ground by the rotating arm (25).
The seedling transplanting machine according to claim 1 or 2 , wherein the vehicle height is adjusted and controlled according to the ridge height detected by the ridge sensor (S2). A rotation detecting member (27) is provided on the rotating members (22, 26) so that the moving distance on the ridge surface can be calculated, and the seedling planting device (3) is set between predetermined stocks by the control device (C). With respect to the operation interval of the seedling planting device (3), the movement distance by the rotation detection member (27) is compared with the set stocks, and if there is a difference, the seedling planting device (3) The seedling transplanting machine according to claim 3 or 5 , wherein the operation timing is changed and controlled.

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