JP2006158358A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the punching operation of a mulch film by a punch certain, and to improve operation efficiency. <P>SOLUTION: The seedling transplanter for transplanting seedlings in a ridge by the reciprocal movement of a seedling-transplanting tine 9 has a sensor roller 15 as a lifting and lowering sensor for detecting the seedling-transplanting depth by the seedling-transplanting tine 9, the punch 10 for punching the mulch film spread on the ridge surface, and soil-covering wheels 12 for covering the transplanted seedling with the soil. The sensor roller 15 is installed nearly in the vicinity of the punch 10 attached so as to be positioned between the soil-covering wheels 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a seedling transplanter, and more particularly to a mounting structure for a sensor roller, a perforated body, and a cover ring disposed in the seedling transplanter.

  2. Description of the Related Art Conventionally, a seedling transplanting machine including a sensor roller as a lift sensor that detects the planting height of a seedling by a seedling planting claw has been known. A seedling transplanting machine using a covered earth ring as a lift sensor is disclosed. In this seedling transplanter, the cover ring disposed at the rear end of the machine body is interlocked and connected to a lift valve or the like disposed in the machine body via a link mechanism or the like, and when it is raised or lowered according to the shape of the cocoon The airframe body is raised and lowered so that the planting depth is the same. And since the earthen ring also serves as a lift sensor, the number of parts is reduced (see Patent Document 1).

In addition, in a seedling transplanting machine that transplants seedlings into the cage with seedling planting claws that reciprocate up and down with respect to the machine body, a multiplicity One having a perforated body for perforating a film is known. For example, in Patent Document 2 and Patent Document 3, a multi-cutter for punching a multi-film stretched on a cocoon at a predetermined timing immediately before a seedling planting nail is planted on the front side of the seedling planting nail, etc. A seedling transplanter in which a perforated body is disposed is disclosed (see Patent Document 2 and Patent Document 3).
JP-A-5-236806 Japanese Utility Model Publication No. 4-71411 Japanese Patent Laid-Open No. 11-253060

  By the way, the perforated body is attached to the front position of the seedling planting claw and substantially in the vicinity thereof. In the seedling transplanting machine, the multi-film on the upper surface of the heel is pressed in the longitudinal direction of the machine body by a pressure-reducing wheel, a cover ring, or the like so that the perforated body can be easily punched when it comes into contact with the multi-film.

  However, according to the configuration of the seedling transplanting machine disclosed in Patent Document 1 to Patent Document 3, a sensor roller (covering ring) as a lift sensor is located behind the perforated body and the seedling planting claw and at the rear end of the body. ) Is disposed, and a pressure-reducing wheel for smoothly suppressing the upper surface of the heel is separately attached to the front end portion of the seedling transplanter, and the sensor roller and the pressure-reducing wheel are largely separated from each other. For this reason, the multi-film cannot be sufficiently pressed against the top surface of the punch, and when the perforated body moves up, the multi-film may be welded to the perforated body and rolled up, or the perforation position may be shifted. In addition, since the sensor roller and the punched body are separated from each other, the timing of the lifting and lowering of the punching body in accordance with the planting depth control by the sensor roller, and the drilling body when working on an uneven ridge surface, In some cases, the height of the lower end of the metal plate and the height of the top surface of the ridges may be different, making it impossible to make a hole, or the perforated body may penetrate into the soil and be damaged.

  If the seedling planting holes are not precisely drilled in the multi-film by the punch, if the seedling is not transplanted to the approximate center of the seedling planting hole, the growth of the transplanted seedling is hindered by the multi-film or reflected from the multi-film. In some cases, the leaves were burned by light. In addition, if the cut edge of the multi-film is bad, the seedlings and debris may be beaten by the wind and come into contact with each other to damage the seedlings. For example, in the case of cabbage or broccoli, even if the seedling is bent, the ball grows with the ball facing upwards, but in the case of lettuce, it becomes a deformed ball if the seedling is not transplanted in a substantially vertical direction. Since the commercial value is lowered, it is preferable to transplant more accurately.

  Therefore, the present invention relates to a seedling transplanter, which solves the above-described conventional problems, and aims to ensure the perforating work on a multi-film by a perforated body and improve the working efficiency.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to claim 1, in a seedling transplanting machine for transplanting seedlings in the cocoon by vertical reciprocation of the seedling planting nails, a sensor roller as an elevation sensor for detecting the seedling planting depth by the seedling planting nails, A perforated body that perforates a multi-film stretched on the surface, and a soil covering ring that covers the seedling transplanted in the cocoon, the sensor roller being in the vicinity of the perforated body, the sensor roller and the soil covering It is attached so that the perforated body is located between the ring.

  According to a second aspect of the present invention, the perforated body is disposed between the left and right traveling wheels in a side view.

  According to a third aspect of the present invention, the sensor roller and the seedling planting claw are disposed between the left and right traveling wheels.

  According to a fourth aspect of the present invention, the sensor roller also serves as a pressure reducing wheel.

  According to a fifth aspect of the present invention, the sensor roller is linked to a lift valve, and constitutes a lift cylinder control mechanism for switching the lift cylinder by switching the lift valve.

  As effects of the present invention, the following effects can be obtained.

  Since it is configured as shown in claim 1, it is possible to prevent the multi-film from rolling up or shifting the punching position when the multi-film is securely stretched in the longitudinal direction of the machine body and the punched body moves up, By attaching the sensor roller in the vicinity of the perforated body, it is possible to prevent the case where the multifilm is not perforated by the perforated body and the seedling cannot be completely transplanted into the cocoon, thereby improving work efficiency.

  Since it is the structure shown in claim 2, the multi-film stretched in the left-right direction of the body by the traveling wheels and stretched in the front-rear direction of the body by the sensor roller and the earthen ring on the smoothed upper surface Since the drilling can be surely performed, the seedling can be transplanted to substantially the center of the seedling planting hole, and the seedling growth is not disturbed or the leaf burn can be prevented due to incomplete planting of the seedling. In addition, the cut edge of the multi-film becomes smooth and does not damage the seedling.

  Since it was set as the structure shown in Claim 3, since a perforation and planting can be performed in cooperation with respect to the smoothed multifilm, work efficiency can further be improved.

  Since it was set as the structure shown in Claim 4, while pressing a multi film reliably with a crushing function between soil covering rings and pressing a heel surface (multi film) and smoothing, it can punch reliably by a punching body. .

  Since it was set as the structure shown in Claim 5, it is comprised so that the detection operation of a raising / lowering sensor may be directly transmitted to a raising / lowering valve, transmission loss is reduced, and the depth of the seedling planted by a seedling planting nail | claw is made uniform. The raising / lowering adjustment can be performed functionally, the planting depth control can be stabilized, and the pricing function can be improved.

Next, the best mode for carrying out the invention will be described with reference to the drawings.
1 is a left side view showing an overall configuration of a seedling transplanter according to the present invention, FIG. 2 is a rear view of FIG. 1, FIG. 3 is a left side view of an engine output unit, and FIG. FIG. 5 is a right side view showing the lifting cylinder control mechanism, FIG. 6 is a perspective view of the rear end of the planting transmission case, FIG. 7 is a right side view of the planting claw driving mechanism, and FIG. FIG. 9 is a left side view showing the arrangement of the traveling wheel, sensor roller, perforated body, and cover ring, FIG. 10 is a left side view showing the seedling transplanter in the working state, and FIG. It is a front view of FIG. 10 similarly.

  In addition, as a seedling transplanting machine according to the present embodiment, a vegetable transplanting machine configured to take out seedlings from a seedling tray 18 in which a plurality of pots are arranged vertically and horizontally and plant the seedlings in a field will be described. It can be applied to a seeder or the like. In addition, the seedling transplanter according to the present embodiment is configured to plant seedlings, lettuce, Chinese cabbage and the like continuously.

<Overall configuration>
As shown in FIGS. 1 and 2, the seedling transplanter according to the present embodiment has a front body frame 1 installed in the longitudinal direction of the body, an engine 2 is mounted on the front body frame 1, and the front body frame 1 A rear body frame 3 is connected to the rear side. A travel transmission case 4 is disposed below the rear vehicle body frame 3, and left and right traveling wheels 5 are supported by the travel transmission case 4 via an axle case 6 so as to be swingable up and down. The front body frame 1 is provided with left and right front wheels 11 configured to be able to swing up and down in conjunction with the swinging operation of the traveling wheels 5. A bonnet 16 is disposed so as to cover the upper side of the engine 2, and upper and lower preliminary seedling stands 17, 17... Are disposed on both sides of the bonnet 16 substantially symmetrically.

  A handle frame 8 protrudes and is arranged behind the rear vehicle body frame 3, and a seedling stage 7 is installed on the handle frame 8 so as to be front-rear and rear-height in a side view. . A seedling planting claw 9 is installed between the left and right traveling wheels 5 and behind the traveling transmission case 4 so as to be slidable up and down. The soil cover 12 is attached so as to be capable of reciprocating movement, and a cover ring 12 is supported at the rear position of the seedling planting claw 9 so as to be slidable up and down. A steering handle 14 is formed on the rear side of the handle frame 8. The steering handle 14 is provided with a travel speed change lever 20 on the left side, a main clutch lever 21 on the right side, and a lift lever 22 on the right side. ing.

  As shown in FIG. 3, a seedling transmission case 27 is placed on the rear upper surface of the rear body frame 3. The rotational drive of the engine 2 is transmitted by the belt 28 to the traveling transmission case 4 on the lower surface of the rear body frame 3, and is transmitted from the traveling transmission case 4 to the seedling transmission case 27 by the belt 29. In the seedling transmission case 27, the seedling extraction claw 13 is driven through a link mechanism (not shown) so as to draw a long elliptical orbit in the vertical direction, and the seedling tray 18 mounted on the seedling mounting base 7 It is configured to be able to take out a pot-shaped seedling of the strain (see FIG. 10).

  A planting transmission case 23 is connected to the rear end of the traveling transmission case 4 behind the rear body frame 3. In this planting transmission case 23, a seedling planting claw drive mechanism 24 and a punched body drive mechanism 25 are respectively formed, and the seedling planting claw 9 and the punched body 10 are configured to be movable up and down. Details will be described later (see FIGS. 6 to 8).

  Thus, in the seedling transplanting machine according to the present embodiment, the left and right traveling wheels 5 are driven by the engine 2, and the seedling planting claws 9, the punched body 10, and the seedling extraction claws 13 are driven to reciprocate vertically. Thus, the seedlings in the seedling tray 18 placed on the seedling placing stand 7 can be continuously planted. That is, the seedlings taken out by the seedling picking nails 13 are released and supplied from the seedling picking nails 13 to the seedling planting nails 9 located below the seedling picking nails 13 and perforated in the multi-film on the upper surface of the cocoon by the punch 10. It is planted at substantially regular intervals through the transplant hole.

  As shown in FIGS. 3 and 4, a lifting cylinder (not shown) is disposed below the engine 2 and on the lower surface of the front body frame 1. The lifting cylinder swings the left and right axle cases 6 to move the left and right axle cases 6. The traveling wheel 5 and the front wheel 11 are raised and lowered. A rolling cylinder 50 for horizontal control of the aircraft is disposed on the left side in front of the aircraft, and the rolling cylinder 50 is connected to a swing arm 51a fixed to a rolling fulcrum shaft 51 provided in the left-right direction of the front body frame 1. When the swing arm 51a is swung, the rolling fulcrum shaft 51 is rotated in conjunction with the swing arm 51a. A connecting arm 51b is fixed to each end of the rolling fulcrum shaft 51, and the connecting arm 51b is linked to the rotating shaft 53 of the axle case 6 via a traveling wheel connecting link mechanism 52a.

  The pivot shaft 53 of the axle case 6 is linked to the front wheel 11 via a front wheel connecting link mechanism 52b, and the front link 11 swings in the same direction in conjunction with the swing of the traveling wheel 5 by the connecting link mechanisms 52a and 52b. It is configured to be moved. When the piston rod of the rolling cylinder 50 is expanded and contracted, the rolling fulcrum shaft 51 is rotated, and the left and right front wheels 11 and the traveling wheels 5 are moved up and down in the reverse direction to adjust the horizontal tilt angle of the airframe. Control is performed.

  As shown in FIGS. 3 to 5, a lifting pump 26 is placed on the front upper surface of the rear body frame 3 and in front of the seedling transmission case 27, and the lifting pump 26 is driven to rotate from the engine 2. Is transmitted through the belt 30. The elevating pump 26 is provided with an elevating valve 31, the elevating valve 31 is provided with a switching arm 32, and the elevating lever 22 is connected to the switching arm 32 via a switching rod 34 and a relay link (not shown). . When the elevating valve 31 is switched by the elevating lever 22, the elevating cylinder is operated, and the traveling wheel 5 and the front wheel 11 are raised and lowered. Thus, by changing the ground height of the machine such as the front body frame 1 and the rear body frame 3, the traveling wheel 5 and the front wheel 11 are lowered with respect to the machine to make the headland turn or on-road posture, On the other hand, it is comprised so that the traveling wheel 5 and the front wheel 11 may be raised with respect to this machine and switched to the planting posture.

<Sensor roller 15>
As shown in FIGS. 4 and 5, between the left and right traveling wheels 5, on the front side of the aircraft relative to the seedling planting claws 9 and the perforated body 10, and in the vicinity of the center in the longitudinal direction of the aircraft, a pressure reducing function is provided. A sensor roller 15 as a pressure-reducing wheel is arranged so as to be swingable up and down, and this sensor roller 15 is moved while being grounded on the heel while the machine is running. In this embodiment, the sensor roller 15 is used as a lift sensor for detecting the planting depth by the seedling planting claws 9, and is interlocked with the lift valve 31, and the lift valve 31 is switched to switch the lift cylinder. An elevating cylinder control mechanism that performs switching control is configured.

  Specifically, a support plate 42 is rotatably supported on a support shaft 39 supported at a lower position of the traveling transmission case 4, and the sensor roller 15 is swingably attached to the support plate 42. The sensor roller 15 is attached to the front position of the seedling planting claw 9 and the punched body 10, and is disposed in the vicinity of the approximate center in the longitudinal direction of the machine body. The support arm 44 is attached to the support plate 42 so as to be swingable up and down with the fulcrum shaft 43 as a swing center, and the other end is connected to the planting depth switching lever 40 via a wire 46. The sensor roller 15 is urged upward by an elastic member 47 interposed between the other end of the support arm 44 and the support plate 42, and is moved up and down within a set range by operating the planting depth switching lever 40. It is positioned by being swung in the direction, so that the surface of the heel is flattened and the height of the heel can be detected.

  A planting depth frame 48 extends forward from the body of the support plate 42, and one end side of a planting depth arm 45 whose length is adjustable is connected to the planting depth frame 48, and the other end side of the planting depth arm 45 is a lift valve. It is connected to 31 switching arms 32. When the sensor roller 15 moves up and down and the support plate 42 swings, the switching arm 32 is actuated via the planting depth frame 48. With this configuration, when the seedlings are planted by the seedling planting claws 9, the sensor roller 15 is moved up and down relative to the unevenness on the ridge so that the support plate 42 and the planting depth frame 48 are raised. The switching arm 32 is switched via the planting depth arm 45, the lifting cylinder is automatically controlled via the lifting valve 31, and the planting depth of the seedling planting claws 9 is made substantially constant by raising and lowering the machine. Automatic control is performed to keep

  As described above, the seedling transplanter according to the present embodiment includes the lifting valve 31 that adjusts the planting depth of the seedling and the sensor roller 15 as the lifting sensor that detects the seedling planting depth of the seedling planting claw 9. In particular, the sensor roller 15 is linked to the lift valve 31, and the lift valve 31 is switched to constitute a lift cylinder control mechanism for switching and controlling the lift cylinder, whereby the detection operation of the sensor roller 15 is lifted and lowered. This can be transmitted directly to the valve 31, and the detection dead zone can be reduced by reducing transmission loss. Moreover, the raising / lowering adjustment which makes the planting depth of a seedling uniform can be performed functionally, and furthermore, the control operation in the vicinity of the detection dead zone of the sensor roller 15 can be stabilized and troubles such as hunting can be eliminated. Planting function can be improved by stabilizing planting depth control.

  In the seedling transplanter in the present embodiment, the sensor roller 15 is configured to also serve as a pressure-reducing wheel, so that the upper surface (multifilm) can be pressed and smoothed, and the perforated body 10 provides a clean planting hole. Can be perforated. In addition to the sensor roller 15, a pressure reducing wheel may be provided separately. In such a case, the sensor roller 15 is configured to always roll in contact with the upper surface of the ridge, does not have a pressure-reducing function, and simply functions as a lift sensor that detects the seedling planting depth by the seedling planting claws 9. What is necessary is just to be comprised so that it may have. Since the sensor roller 15 also serves as a pressure-reducing wheel having a pressure-reducing function for suppressing the upper surface of the heel, the number of parts constituting the seedling planting machine can be reduced.

<Soil cover 12>
As shown in FIGS. 1 and 5, a pipe shaft 36 is fixed to the lower surface side of the traveling transmission case 4, and a cover ring frame 38 is disposed on a fulcrum plate 37 disposed on the pipe shaft 36 via a support shaft 39. A cover ring 12 is attached to a midway part of the cover ring frame 38 and substantially below the seedling stage 7. A rear side of the earthen ring frame 38 is connected to a planting depth switching lever 40 of the steering handle 14 via an expansion / contraction mechanism 41 so that a planting depth adjustment range of the seedling can be switched. The cover ring frame 38 is pivotally supported around the support shaft 39 so as to be rotatable within a set range of the planting depth switching lever 40 so that the cover ring 12 is grounded at a substantially constant contact pressure. By this covering ring 12, the seedling planting claw 9 opens to suppress the trace of planting the seedling, and the seedling is covered with soil.

<Seedling Nail 9 and Perforated Body 10>
As shown in FIGS. 6 to 8, the planting transmission case 23 is connected to the rear end of the traveling transmission case 4, and the seedling planting claw driving mechanism 24 and the punched body driving mechanism formed in the planting transmission case 23. The seedling planting claws 9 and the perforated bodies 10 are respectively arranged via the 25 so as to be movable up and down. The rotational drive of the engine 2 is transmitted to the planting transmission case 23 via the traveling transmission case 4, and is transmitted to the seedling planting claw driving mechanism 24 and the perforated body driving mechanism 25 formed on the left and right sides of the planting transmission case 23. It is transmitted and the seedling planting claw 9 and the punched body 10 are output as a reciprocating motion in the vertical direction.

  As shown in FIGS. 6 and 7, the seedling planting claw drive mechanism 24 is arranged on the rear right side of the planting transmission case 23 via the rotary case 55, the crank arm 56, and the planting arm 57. A seedling planting claw 9 is attached to the tip. The rotary case 55 is rotated about the pivot axis with the planting transmission case 23, and the planting arm 57 is slid up and down along the lifting guide rail 58 while swinging the crank arm 56 up and down. 9 is moved up and down by the vertical oval planting activation. This seedling planting claw 9 is configured so that the seedling planting claw is divided into two in the front-rear direction so that it can be opened and closed in the front-rear direction. When it descends, each of the half seedling planting nails 9 is opened and closed back and forth to open a seedling planting hole in the cocoon and drop the seedling in the seedling planting nail 9 into the seedling planting hole.

  As shown in FIGS. 6 and 8, the perforated body driving mechanism 25 includes a pair of upper and lower parallel links 60 and 60 whose base ends are supported by a fixed mounting plate 59 on the left rear side of the planting transmission case 23, and the parallel links 60. Are attached to the fixed attachment plate 59 via the attachment plate 61 so as to be movable up and down, the cam 62 attached on the output shaft 23a from the planting transmission case 23, and the substantially parallel center of the upper and lower parallel links 60. The rotor 63 is slidably contacted along the circumferential shape of the cam 62, and the perforated body 10 is attached to the attachment plate 61 via the support member 69.

  The cam 62 is rotationally driven in a predetermined direction by driving from the planting transmission case 23. In a state where the rotor 63 is in sliding contact with the circumferential surface of the cam 62, the parallel link 60 is swung upward so as to be substantially parallel to the upper surface of the collar, and the perforated body 10 is moved upward. To be separated from the top surface. When the cam 62 is rotated and the rotor 63 is engaged with the notch 62 a of the cam 62, the parallel link 60 is swung downward by its own weight, and the perforated body 10 is moved downward to move the multi-hole on the upper surface of the collar. Contacted with film. The perforated body 10 may be configured such that an elastic member such as a spring is disposed on the parallel link 60 and is urged downward or upward.

  The perforated body 10 is formed with a burnout portion 10a at the lower end, and the burnout portion 10a is disposed on the left outer side of the bonnet 16 in front of the machine body and behind the front end of the engine 2 and ahead of the axle case 6. It is connected to an installed generator 64 (see FIGS. 1 and 3). The generator 64 is driven by driving the power of the engine 2 via a pulley 65 and a belt (not shown), and is usually covered by a cover 66. ON / OFF of the burn-out portion 10a is operated by a switch 68 formed on an operation plate 67 bridged to the handle frame 8 (see FIG. 2). The burnout part 10a generates heat when the switch 68 is turned on, and melts it at the contact part with the multi-film to pierce the transplant hole. Further, a switch lamp 70 is provided on the side of the switch 68. The switch lamp 70 blinks from when the switch 68 is turned on until it enters a working state, and when the preparation is completed, the switch lamp 70 turns on. By disposing the switch 68 and the switch lamp 70 on the handle frame 8, the burn-out portion 10a can be easily turned on and off while maneuvering the machine body, and workability is improved.

  In this way, the perforated body 10 is reciprocated up and down in conjunction with the transplanting operation of the seedling planting claw 9 along a vertically long elliptical locus so as to perforate the transplanted hole in the multi-film covered with the heel. Composed. And the seedling planting claw 9 is pierced in the cage through the transplant hole, and the seedling is planted. The seedling planting claw 9 and the perforated body 10 are intermittently driven in a reciprocating manner up and down, and after the perforated body 10 moves downward to perforate the multi-film, the seedling planting claw 9 is moved down to plant seedlings. Are linked so that

<Arrangement Configuration of Traveling Wheel 5, Sensor Roller 15, Perforated Body 10, and Covering Ring 12>
As shown in FIGS. 5 and 9, the seedling transplanting machine according to the present embodiment includes a sensor roller 15 as a lifting sensor that detects the seedling planting depth by the seedling planting claws 9, and a multi-layer stretched on the heel surface. A perforated body 10 for perforating the film and a covering ring 12 for covering the seedling transplanted in the reed are always in contact with the multi-film surface on the upper surface of the reed or configured to be able to contact by moving up and down. The sensor roller 15, the seedling planting claws 9, and the cover ring 12 are attached on a substantially straight line in this order so that the punched body 10 is positioned between the sensor roller 15 and the cover ring 12 in the longitudinal direction of the machine body. The perforated body 10 is disposed between the left and right traveling wheels 5 in a side view, and the perforated body 10 is formed by the arrangement configuration of the traveling wheels 5, the sensor roller 15, the seedling planting claws 9, and the cover ring 12. It is comprised so that a perforation can be reliably carried out to the multi film on an upper surface.

  As described above, the left and right traveling wheels 5 are attached to the traveling transmission case 4 below the rear vehicle body frame 3 via the axle case 6 supported so as to be vertically swingable. It is comprised so that it may be located in the approximate center vicinity. In the present embodiment, particularly in the planting operation, the axle case 6 is rotated upward, and in this state, the sensor roller 15, the punched body 10, And the seedling planting nail | claw 9 is arrange | positioned.

  The perforated body 10 is used to perforate transplant holes in the multi-film as a pre-stage for planting seedlings with the seedling planting claws 9, and is attached to the front position of the seedling planting nails 9 in the immediate vicinity. That is, the attachment position of the perforated body 10 is determined by the attachment position of the seedling planting claw 9. Usually, the seedling planting claws 9 are located between the left and right traveling wheels 5 and depending on the positions of the engine 2 and the seedling mount 7 disposed on the front body frame 1 and the rear body frame 3 in a side view. It is attached behind the approximate center in the front-rear direction. Therefore, the perforated body 10 is located in front of the seedling planting claw 9 and is attached to the approximate center in the longitudinal direction of the machine body.

  The soil covering ring 12 covers the transplanted seedling as a stage after planting the seedling with the seedling planting claw 9, and is disposed at a position behind the seedling planting claw 9. The covering ring 12 also depends on the attachment position of the seedling planting claw 9, but the separation is not limited as long as it is the rear position of the seedling planting claw 9. However, as will be described later, it is preferable to attach the sensor roller 15 at a position so that the distance from the sensor roller 15 is shortened.

  The sensor roller 15 is a lift sensor that detects the seedling planting depth by the seedling planting claws 9. The sensor roller 15 is between the left and right traveling wheels 5 during operation, and the sensor roller 15 is a traveling wheel in a side view. 5 is arranged so as to overlap with 5, and is attached to a front position of the seedling planting claw 9 and the punched body 10 and in the vicinity of the punched body 10.

  As shown in FIGS. 10 and 11, when a seedling transplanting operation is performed, in the mounting structure of the traveling wheel 5, the sensor roller 15, the perforated body 10, and the cover ring 12, the sensor roller 15 and the cover ring 12 are The multi-film is always brought into contact with the multi-film, and the multi-film is pressed against the top surface in the longitudinal direction of the machine body. Then, the perforated body 10 is moved up and down intermittently at a predetermined interval, and a transplant hole is perforated in the multi-film. The multi-film below the advancing seedling transplanter is stretched in the longitudinal direction of the machine by the sensor roller 15 and the cover ring 12, and stretched in the horizontal direction of the machine by the traveling wheel 5, and transplanted between the multi-films stretched by the punched body 10. A hole is drilled.

  In the present embodiment, the sensor roller 15 is attached at a position close to the perforated body 10, and is configured such that the perforated body 10 is disposed between the sensor roller 15 and the soil covering ring 12. In other words, the sensor roller 15 is attached in the vicinity of the perforated body 10 attached to the front position of the seedling planting claw 9. In other words, the traveling wheel 5, the seedling planting claw 9, the perforated body 10, and the sensor roller 15 is attached in a concentrated manner in the vicinity of the center in the longitudinal direction of the aircraft.

  By setting it as the above structures, separation | spacing with the sensor roller 15 and the earth covering ring | wheel 12 can be made shorter than the seedling transplanter each attached to the body front end and the body rear end at least. As described above, the sensor roller 15 and the cover ring 12 constitute a member that presses the multi-film. If the separation between these members in the front-rear direction of the machine body is short, the seedling is planted at the drilling position by the drilling body 10. The displacement of the position where the nail 9 is inserted can be reduced, and the multifilm in the vicinity of the punching position by the punching body 10 can be sufficiently pressed against the upper surface of the heel and strongly stretched in the longitudinal direction of the machine body. Therefore, it is possible to prevent the multi-film from rolling up or shifting the punching position when the punching body 10 moves up, and the punching work by the punching body 10 can be performed reliably.

  Further, by attaching the sensor roller 15 as the elevation sensor and the punched body 10 close to each other, the sensor roller 15 is moved up and down in conjunction with the unevenness of the upper surface of the ridge, and the raising and lowering valve 31 is operated to switch the planting depth. After being controlled, the perforated body 10 can immediately descend to drill the transplant hole. Therefore, due to the detection error of the lifting sensor, the timing of the raising and lowering of the machine body accompanying the planting depth control and the vertical movement of the drilling body 10, the height of the lower end of the drilling body and the height of the upper surface of the punch are shifted by the punching body 10 The work efficiency can be improved by reducing the number of cases in which the seedling cannot be completely transplanted into the cocoon without perforating the multifilm.

  As an arrangement configuration of the punched body 10, the multi-film pressed on the upper surface of the saddle by the left and right traveling wheels 5, the sensor roller 15, and the cover ring 12 is configured to repeatedly punch up and down. And on the smoothed upper surface, the left and right sides of the multi-film are stretched in the lateral direction of the body by the traveling wheels 5 and stretched in the longitudinal direction of the body by the sensor roller 15 and the cover ring 12, so Can drill. Therefore, if the seedling can be transplanted at the approximate center of the seedling planting hole and the seedling growth is hindered due to imperfect seedling planting, bent or grown, or shifted from the center of the drilled hole In this case, it is possible to prevent leaf burning due to reflection from the multi-film. Moreover, the cut end of the seedling planting hole becomes smooth, and the seedling is not damaged. In particular, by placing the sensor roller 15, the punched body 10 and the seedling planting claws 9 between the left and right traveling wheels 5, drilling of seedling planting holes and transplanting of seedlings with respect to a smoothed multifilm Work efficiency can be further improved.

  Furthermore, the sensor roller 15 as the lifting sensor also serves as a pressure-reducing wheel, so that the multi-film on the upper surface can be more reliably pressed by the pressure-reducing function as the pressure-reducing wheel. Can be prevented more reliably.

The left view which showed the whole structure of the seedling transplanting machine which concerns on this invention. The rear view of FIG. The left view of an engine output part. The right view of a raising / lowering link mechanism. The right view which showed the raising / lowering cylinder control mechanism. The perspective view of the planting transmission case rear end. The right view of a planting nail drive mechanism. The left view of a punch body drive mechanism. The left view which showed the arrangement configuration of a traveling wheel, a sensor roller, a perforated body, and a soil covering ring. The left view which showed the seedling transplanting machine of the working state. The front view of FIG. 10 similarly.

Explanation of symbols

9 Nail with seedlings 10 Perforated body 12 Covering ring 15 Sensor roller

Claims (5)

  In a seedling transplanter that transplants seedlings into the cocoon by reciprocating the seedling planting nails, a sensor roller as a lift sensor for detecting the seedling planting depth by the seedling planting nails, and a multi-film stretched on the surface And a cover ring that covers the seedling transplanted in the cage, and the sensor roller is substantially in the vicinity of the drill body, and the punch is between the sensor roller and the cover ring. A seedling transplanter that is mounted so as to be positioned.   The seedling transplanter according to claim 1, wherein the perforated body is disposed between the left and right traveling wheels.   The seedling transplanter according to claim 2, wherein the sensor roller and the seedling planting claw are disposed between the left and right traveling wheels.   The seedling transplanter according to claim 1, wherein the sensor roller also serves as a pressure-reducing wheel.   The said sensor roller comprises the raising / lowering cylinder control mechanism which is interlockedly connected with the raising / lowering valve, and the raising / lowering valve is switched and controls switching of an raising / lowering cylinder. Seedling transplanter.

Images