JP2010051280A - Seedling transplanter - Google Patents

Abstract

[PROBLEMS] To provide a seedling transplanting machine with a ground working device that can perform leveling properly in a headland or near a headland where a field is likely to be rough, and the seedling planting accuracy is improved.
SOLUTION: Rotors 27a and 27b for leveling a ground provided so as to be raised and lowered with respect to a seedling planting part 4 having a plurality of seedling planting tools 52a provided at a rear part of a vehicle body 2 so as to be movable up and down; The cover 37 is provided coaxially with the rotation shaft, and the travel distance from the start of turning of the steering wheel is measured based on the rotational speed detected by the rotational speed sensor 7 of the wheel (the rear wheel inside the turn). When a predetermined value is reached, an automatic planting start mode for automatically starting seedling planting in the field by the seedling planting unit 4 is set, and the rotor cover 37 is not grounded during operation of the mode. The rear part 37b is pivoted with the rear end of the upper part 37a fixedly supported by the seedling planting device 4 as a fulcrum, and the rear end of the rear part 37b is grounded to the field, and seedlings are planted at the rear end. The part 4 is floated and the unevenness of the field is leveled.
[Selection] Figure 1

Description

  The present invention relates to a seedling transplanter with a ground work device.

In a seedling transplanter equipped with a seedling planting device with a float (sometimes referred to as a rice transplanter), a configuration with a rotor for leveling the field just before seedling planting by the seedling planting device is known. ing.
In this specification, the forward direction of the seedling transplanter is referred to as the front side, the backward direction is referred to as the rear side, and the left-right direction toward the forward direction is referred to as the left side and the right side, respectively.
Japanese Utility Model Publication No. 1-172311

  In the seedling transplanter disclosed in Patent Document 1, the float as the leveling tool rises as the vehicle speed increases. Thus, although the structure which adjusts a leveling tool up and down according to the vehicle speed of a seedling transplanter is known, the leveling state by a leveling tool changes with not only the vehicle speed but the condition of the field.

  An object of the present invention is to provide a seedling transplanter with a ground work device that can perform leveling properly in a headland or near a headland where a farm field tends to be rough, and thus can improve planting accuracy.

The above-mentioned problem of the present invention is solved by the following means.
The invention according to claim 1 includes a traveling vehicle body (2) having a pair of front and rear wheels (10, 11) and a wheel rotational speed sensor (6) for detecting the rotational speeds of the pair of front and rear wheels (10, 11). A seedling planting part (4) having a plurality of seedling planting tools (52a) provided at the rear part of the traveling vehicle body (2) so as to be movable up and down, and ascending and descending with respect to the seedling planting part (4) An upper part that is freely and arranged toward the lateral width direction of the traveling vehicle body (2), covers the ground leveling tools (27a, 27b) that touch the ground and level the ground, and the upper and rear sides of the leveling tools (27a, 27b), respectively. (37a) and a leveling implement cover (37) comprising a rear portion (37b), a steering device (24) for turning the traveling vehicle body (2), and a turning sensor (7) for detecting a turning angle of the steering device (24). And traveling from the start of turning of the steering device (24) detected by the turning sensor (7). The separation is measured based on the number of rotations detected by the rotation number sensor (6) of the wheel on the inside of the turn, and when the measured travel distance reaches a predetermined value, the seedling planting unit (4) automatically seeds the seedling in the field A control that can set an automatic planting start mode for starting and a rear portion of an upper portion (37a) of the leveling tool cover (37) so as not to ground the leveling tool (27a, 27b) during operation of the automatic planting start mode. A control device (100) that performs lifting control to rotate the rear part (37b) with the end part as a fulcrum, and to ground the rear end part of the rear part (37b) to the field and to float the seedling planting part (4) A seedling transplanter equipped.

According to the first aspect of the present invention, when the automatic planting start mode is activated when the traveling vehicle is turning, the rear portion (37b) of the leveling implement cover (37) is prevented from contacting the leveling implement (27a, 27b). The rear end portion is grounded to the field, the seedling planting portion (4) is floated, and at the same time, the unevenness of the field can be leveled at the rear end portion (37b) of the leveling tool cover (37).

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 are a side view and a plan view of a riding type rice transplanter equipped with a fertilizer application device as a granular material feeding device which is an embodiment using the present invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting portion 4 can be moved up and down. Is provided.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle 11a that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a belt transmission device 21 and a hydrostatic continuously variable transmission (HST) 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 28. Is transmitted to.

The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.
Further, on both the left and right sides of the front part of the traveling vehicle body 2, the spare seedling platforms 38, 38 on which the replenishment seedlings are placed can be pivoted to a position projecting laterally from the machine body and a position housed inside. Is provided.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the cylinder 46 is expanded and contracted by hydraulic pressure. The upper link 40 pivots up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to supply seedlings to the seedling outlet 51a of each row one by one. When all the seedlings are supplied to the seedling outlet 51a, the seedling feed belt 51b is used to transfer the seedlings downward by a seedling feeding belt 51b, and the seedling planting is carried out in the field. Attaching device 52,..., A pair of left and right drawing markers (not shown) for drawing the aircraft path in the next stroke to the topsoil surface, and the like are provided. In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56, 56 in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52, Seedlings are planted by ... Each of the floats 55, 56, and 56 is rotatably mounted so that the front end side moves up and down in accordance with the unevenness of the surface soil surface of the field. During planting work, the vertical movement of the front part of the center float 55 receives the angle sensor ( The planting depth of the seedling is always maintained constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4.

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Guided to a guide (not shown),... Is dropped into a fertilization structure formed in the vicinity of the side portion of the seedling planting line by a grooved body 69 provided on the front side of the fertilization guide. Air generated by the blower 58 driven by the blower electric motor 53 is blown into the fertilizer hose 62 through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62 is forced by the wind pressure. It is designed to be transported.

  A rotor 27 (27a, 27b) which is an example of a leveling device is attached to the seedling planting unit 4. In addition, the seedling mount 51 is configured to slide in the left-right direction using a support roller 65a of a rectangular support frame 65 having a full width in the left-right direction and the vertical direction that supports the entire seedling planting unit 4 as a rail.

The main part of the rotor support structure is shown in the side view of FIG. 3 and the rear view of FIG. 4, and the main part plan view of the rotors 27a and 27b, the floats 55 and 56, and the seedling planting device 52 part is shown in FIG.
The rotor support structure includes a beam member 66 whose upper ends are rotatably supported on both side members 65b of the support frame 65 of the seedling stage 51, a support arm 67 fixed to both ends of the beam member 66, and the support. A rotor support frame 68 that is rotatably attached to the arm 67 is provided. A drive shaft 70 (70a, 70b) of the rotor 27 (27a, 27b) is attached to the lower end of the rotor support frame 68. The lower end portion of the rotor support frame 68 is connected to a connecting member 71 that is rotatably attached to the transmission case 50.

  As shown in FIG. 5, the clutch shifter 97 of the rotor drive case 87 and the clutch cable 99 for operating the shifter 97 are arranged inside the rear wheel gear case 18 and at the center of the fuselage.

A rotor raising / lowering motor 63 is provided on the axial extension line of the beam member 66.
As shown in FIG. 5, the rotor (sometimes referred to as the center rotor) 27b located in front of the center float 55 in relation to the arrangement position with the floats 55 and 56 is referred to as the rotor (referred to as side rotor) located in front of the side float 56. It is located in front of 27a. Therefore, the power to the drive shaft portion 70a of the left rotor 27a is transmitted from the gear in the gear case 18 of the rear wheel 11 to the gear in the rotor drive case 87, and from the rotor drive case 87 through the universal joint 72 and the like. The power is transmitted to the drive shaft 70b of the rotor 27b from a chain (not shown) in the chain case 73 to which power is transmitted from the end of the drive shaft 70a of the left rotor 27a inside the vehicle body. The drive shaft 70a of the right rotor 27a is transmitted with power from the drive shaft 70b of the rotor 27b via a right chain (not shown).

  Since the drive shaft portion 70b of the rotor 27b is only supported through a pair of left and right chain cases 73, 73, a reinforcing member 74 that bridges the pair of left and right chain cases 73, 73 to reinforce the chain cases 73, 73. Is provided.

The rotor 27b is suspended by a pair of link members 76 and 77 whose upper ends are supported by the beam member 66 via a spring 78.
The pair of link members 76 and 77 includes a first link member 76 whose one end is fixedly supported by the beam member 66 and a second link member 77 whose one end is rotatably connected to the other end of the first link 76. Thus, the spring 78 is connected between the other end of the second link member 77 and a mounting piece 74a rotatably supported by the reinforcing member 74.

  The beam member 66 is rotated in the direction in which the first link member 76 is rotated upward by the operation of the rotor lifting / lowering motor 63, and the first link member 76 and the second link member are rotated along with the rotation of the beam member 66. The rotor 27 b can be lifted upward via the spring 77 and the spring 78. When the rotor 27b is moved upward, the rotor 27a is also simultaneously moved upward via the drive shaft portion 70b and the drive shaft portion 70a.

  In this embodiment, the rotors 27a and 27b, which are 40 mm in height at the standard position, can be raised up to 15 mm from the standard position by the rotation of the rotor lifting / lowering motor 63, and the rotor lifting / lowering motor 63 can be rotated in the reverse direction. Is set to be 15 mm lower than the standard position.

  As shown in FIG. 4, since the rotors 27a and 27b can be moved up and down by the rotor lifting / lowering motor 63, when the seedlings are planted with the rotors 27a and 27b while leveling the edge, Switching from the working state of the rotors 27a and 27b in which the shaft of the member 66 is rotatable to the storage state of the rotors 27a and 27b is automatically performed by the rotor lifting and lowering motor 63 in conjunction with the raising of the seedling planting unit 4. It can be configured.

Since the rotor 27b is supported by the seedling planting part 4 via a spring 78 or the like so that the rotor 27b escapes from the lower links 41, 41 when the seedling planting part 4 is raised, the rotor 27a is flexible. Is supported by the seedling planting part 4.
Further, the rotors 27a and 27b may be adjusted to a set height by a rotor height adjustment dial provided on a meter panel (not shown) provided in the vicinity of the control seat 31.

  When the rotor height is set manually, the rotors 27a and 27b may not be used during the next seedling planting operation while the rotors 27a and 27b are moved to the storage position. If the configuration is adjusted to the set height, such a problem can be prevented.

As shown in FIG. 4, a rotor raising / lowering motor 63 is attached to one end of the beam member 66. When the seedling planting portion 4 is raised, the rotors 27a and 27b are lowered, and when the seedling planting portion 4 is lowered, the rotor is moved. 27a and 27b may be configured to rise. As a result, the rotors 27a and 27b can be lowered at the time of turning, and only the turning trace can be leveled. In this case, the control device 100 controls the drive of the rotor lifting / lowering motor 63 by turning on the lifting / lowering link sensors 94 (FIG. 3) of the upper and lower links 40 and 41 of the seedling planting unit 4 and the rotor interlocking on / off switch 96 (FIG. 2). Do. In the case of such a configuration, the rotor elevating motor 63 can be automatically operated, so that the operability is improved.
As shown in FIG. 1, a rotor cover 37 is provided on the upper rear side of the rotors 27 a and 27 b so that mud is not applied to the floats 55 and 56.

  As described above, the rotors 27a and 27b are usually lifted by operating the rotor lifting / lowering motor 63, but in this embodiment, a saddle clutch (see FIG. When the hook clutch lever 19 (FIG. 2) is turned off, the rotor lifting / lowering motor 63 is operated to automatically lower the rotors 27a and 27b to perform leveling work.

For this purpose, a saddle clutch lever sensor 19a (FIG. 4) for detecting whether the saddle clutch lever 19 is on or off is provided.
Therefore, when the heel clutch is disengaged by operating the heel clutch lever 19 in order to adjust the number of planting strips in the headland and the vicinity thereof, the heel clutch lever sensor 19a detects the disconnection of the heel clutch lever 19 and controls it. The apparatus 100 (FIG. 4) can automatically lower the rotors 27a and 27b to perform leveling work.
Thereby, it is possible to reliably level the headland or the vicinity of the headland which is likely to be rough in the field.

  In this embodiment, the control sensitivity change dial (not shown) provided in the vicinity of the seat 31 is adjusted according to the hardness of the field to adjust the control sensitivity of the vertical position of the seedling planting portion 4 by the expansion and contraction of the lifting hydraulic cylinder 46. It has a configuration that can be changed to multiple stages. For each set value of the control sensitivity by the control sensitivity change dial, a plurality of front and rear tilt angles (attack angles) are set to the front rising side when the field is hard, and to the front lowering side when the field is soft. Different angles are set.

  Accordingly, the control device 100 expands and contracts the lifting hydraulic cylinder 46 so that the detected value of the angle-of-attack sensor becomes the inclination angle of the center float 55 set by the control sensitivity change dial. 4 is controlled to be the set vertical position.

  At this time, if the field is hard, the control sensitivity of the elevating hydraulic cylinder 46 is made insensitive by the control sensitivity change dial. In conjunction with this, the vertical positions of the rotors 27a and 27b are corrected to the ascending side and leveling is performed. To do. On the contrary, if the field is soft, the control sensitivity change dial makes the control sensitivity of expansion / contraction of the lifting hydraulic cylinder 46 a sensitive side, and in conjunction with this, the vertical position is corrected to the downward side to level the ground. Thereby, the difference in the ground height of the rotors 27a and 27b can be suppressed by the difference in the front and rear inclination angle (attack angle) of the center float 55 due to the control sensitivity change. Further, when the rotor 27a, 27b enters deeply in a field with hard soil, it is possible to suppress a problem that the rotor 27a, 27b has a large driving resistance, and to prevent the transmission mechanism from being damaged or the traveling speed from being lowered. In this way, a stable leveling effect can be achieved according to the hardness of the field.

  Further, by adjusting the inclination angle of the swash plate of the trunnion shaft of the hydrostatic continuously variable transmission (HST) 23, it is interlocked with the shift lever 16 (FIG. 2) that changes the output of the HST hydraulic motor (not shown). Thus, if the rotors 27a and 27b are automatically moved to the storage position (upward position) by the rotor lifting / lowering motor 63, the rotors 27a and 27b do not push mud and water in the field during high-speed travel. For this reason, it is possible to prevent the adjacent existing seedlings from being defeated by the muddy water flow.

  The rice transplanter of the present embodiment has a configuration that can set a control mode (automatic planting start mode) in which the planting start position of the seedling after turning is automatically performed based on the rotation speed of the rear wheel. In this control mode setting, the turning start timing is detected by the turning sensor 7 of the handle 24, the travel distance from the start of turning detected by the turning sensor 7 is measured based on the rotational speed of the rear wheel 11 inside the turning, and the travel This is an automatic planting start mode in which seedling planting is automatically started even if the seedling planting lever 19 (FIG. 2) is not operated when the distance reaches a predetermined value.

  During this automatic planting start mode operation, the rotors 27a and 27b are floated so as not to be grounded, and the rear end portion of the rotor cover 37 is grounded so that the unevenness of the field is leveled slightly. Elevation control can be performed.

  As shown in the side view of the rotor part in FIG. 6, the rotor cover 37 is composed of an upper part 37a and a rear part 37b that cover the upper and rear parts of the rotors 27a and 27b, respectively. The upper part 37a is supported and fixed to the seedling planting part 4. Since the front end of the rear portion 37b is rotatably supported by the rear end of the upper portion 37a, the upper portion 37a of the rotor cover 37 is prevented from contacting the rotors 27a and 27b during the automatic planting start mode operation. With the rear end as a fulcrum, the rear part 37b is rotated by, for example, an electric motor (not shown) at the rear end of the upper part 37a, and the rear end of the rear part 37b is grounded to the field, so that the seedling planting part 4 is Can float.

  As shown in FIG. 4, the beam member 66 is provided with a rotor height sensor 83 for detecting the rotor height measured in accordance with the rotation angle of the rotor lifting / lowering motor 63. When the measured rotor height is lower than the reference value, the seedling planting depth control manual lever 84 shown in FIG. 3 is operated in the direction of arrow S so that the seedling planting device 52 is lifted off the field. The base of the planting depth control manual lever 84 is integrally connected to the other end of the arm 82, one end of which is rotatably supported by an arm fixing portion 85 supported on the upper surface of the side float 56, and A lever guide 88 that temporarily supports the lever 84 in a plurality of stages is attached to the frame of the seedling planting portion 4 at the center near the tip of the planting depth control manual lever 84. Therefore, when the tip of the planting depth control manual lever 84 is moved to the arrow S phrase, the float 56 can be floated by rotating the base side around the fulcrum of the arm fixing portion 85. The seedling planting device 52 relatively approaches the field scene as the side float 56 floats.

  Further, the control device 100 controls the vertical position of the seedling planting unit 4 by operating the vertical links 40 and 41 by the expansion and contraction of the hydraulic cylinder 46 for the vertical movement according to the detection value of the vertical link sensor 94 (FIG. 3). However, if the rotors 27a, 27b are leveling work at this time, the field is softer than usual, so the control sensitivity of expansion / contraction of the elevating hydraulic cylinder 46 is changed to the insensitive side.

  Further, an inclination angle of the chain case 73 that supports both ends of the N drive shaft portion 70b of the center rotor 27b with respect to the drive shaft portion 70a in the longitudinal direction is measured by a center rotor height sensor (not shown) including a potentiometer, or a spring 78. Is measured by a rotor pressing force sensor (not shown) provided on the second link member 77 to detect the height of the center rotor 27b with respect to the field scene. The control device 100 controls the degree of expansion / contraction of the elevating hydraulic cylinder 46 so as to reduce the height of the center rotor 27b from the farm scene.

  In addition, as shown in FIG. 7, a contaminant receiver 95 that can scoop up large contaminants in front of the side rotors 27a, 27a and / or the center rotor 27b can be provided. This is for scooping up large impurities that cannot be placed on the rotors 27a and 27b above the rotors 27a and 27b.

  Further, as shown in FIG. 8, when a plurality of blades 98 are radially attached to the outer peripheral portions of the rotors 27a and 27b at equal intervals, and the attachment angle of the blades 98 to the cylindrical portions of the rotors 27a and 27b is variable. The attachment angle of the blades 98 can be changed depending on the hardness of the field.

  When the center rotor 27b, which is only suspended by the spring 78 when the seedling planting part 4 is raised, comes to a position where it comes into contact with the lower link 41, the rotor 27b bounces and damages the rotor 27b. There is a risk that. Further, if the rotor 27b is submerged in Fukada, the rotor 27b may be damaged in this case as well.

  Therefore, as shown in FIG. 3, when the center rotor 27b approaches the lower link 41, the hook 101 provided on the lower link 41 is provided with a locking portion 37aa provided at the front end of the upper portion 37a of the cover 37 of the center rotor 27a, 27b. If the center rotor 27b and the lower link 41 are damaged, there is no possibility of damage.

  Further, when the rotors 27a and 27b are raised together with the seedling planting portion 4, the clutch (not shown) in the rotor drive case 87 is operated by the clutch shifter 97 and the clutch cable 99 to stop the rotation of all the rotors 27a and 27b.

  However, when the rotors 27a and 27b go into Fukada, if the center rotor 27b that goes in first stops rotating, it breaks. Note that the side rotor 27a easily sinks into Fukada, and in that case, mud splashes become severe. Therefore, when the side rotor 27a sinks into Fukada, it is desirable to stop the rotation of the side rotor 27a.

  Therefore, a drive clutch only for the center rotor 27b is provided on each of the drive shafts 70b in the pair of connecting portions with the drive shafts 70a of the side rotors 27a inside both chain cases 73, and this clutch is connected with a clutch cable (not shown). -If the configuration is such that it can be turned off, only the center rotor 27b can be driven. By rotating the center rotor 27b in this way, the damage can be prevented.

If a pair of rotation sensors 102 and 103 are provided before and after the rotors 27a and 27b shown in FIG. 9, the level of the field surface can be detected. That is, when the level of the field surface is good, the rotational resistance of the rotation sensor 103 on the rear side of the rotor is reduced, so that there is a large difference between the detected values of the pair of rotation sensors. Further, if the level of the field surface is not good, the rotational speeds of the pair of rotation sensors 102 and 103 before and after the rotor do not change. In this case, the hydraulic pressure is applied so that the rotors 27a and 27b can hold the field scene. The raising / lowering control of the cylinder 46 is performed.
The pair of rotation sensors 102 and 103 are supported on the upper portion 37 a of the rotor cover 37 via the arms 104 and 105.

  In the present invention, the seedling planting part of the rice transplanter can be configured simply and has a high possibility of use.

It is a side view of the riding type rice transplanter of the Example of this invention. It is a top view of the riding type rice transplanter of FIG. It is a principal part side view of the seedling planting part of the riding type rice transplanter of FIG. It is a principal part rear view of the support structure of the seedling mounting stand of the riding type rice transplanter of FIG. It is a principal part top view of the seedling planting part of the riding type rice transplanter of FIG. It is a principal part side view of the rotor part of the riding type rice transplanter of FIG. It is a principal part side view at the time of arrange | positioning the crossing scooping member which covers the front and upper direction of the rotor of the riding type rice transplanter of FIG. It is a principal part side view at the time of attaching the several blade | wing which can change an angle to the outer peripheral part of the rotor of the riding type rice transplanter of FIG. It is a principal part side view at the time of arrange | positioning a pair of rotation sensor before and behind the rotor of the riding type rice transplanter of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter with fertilizer 2 Traveling vehicle body 3 Elevating link device 4 Seedling planting part 5 Powder body feeding device (fertilizer) 6 Wheel rotation speed sensor 7 Turning sensor 10 Front wheel 11 Rear wheel 11a Rear wheel drive shaft 12 Mission Case 13 Front wheel final case 15 Main frame 16 Transmission lever 18 Rear wheel gear case 19 畦 Clutch lever 19a 畦 Clutch lever sensor 20 Engine 21 Belt transmission 23 HST
25 Planting clutch case 26 Planting transmission shaft 27 (27a, 27b) Rotor 27a1 Rotor 28 Fertilizer transmission mechanism 30 Engine cover 31 Seat 32 Front cover 34 Handle 35 Floor step 36 Rear step 37 Rotor cover 37a Upper part 37b Rear part 38 Preliminary Seedling stage 40 Upper link 40a Protrusion 41 Lower link 42 Link base frame 43 Vertical link 44 Connection shaft 45 Rotor height adjustment lever 46 Lifting hydraulic cylinder 47 Chain case 48 Rotor height adjustment member 48a Long hole 49 Spring 50 Transmission case 51 Seedling Mount 51a Seedling outlet 51b Seedling feed belt 52 Seedling planting device 52a Seedling planting tool 53 Blower electric motor 54 Output shaft 55 Center float
56 Side float 57 Elastic body
58 Blower 59 Air chamber 60 Fertilizer hopper 61 Feeding part 62 Fertilizer hose 63 Rotor lifting / lowering motor 64 Sprocket 65 Seedling planting part support frame
65a Support roller 65b Side member 66 Beam member 67 Support arm 68 Rotor support frame 69 Groove 70 (70a, 70b) Drive shaft 70b 'Universal joint 71 Connecting member 72 Universal joint 73 Chain case 74 Reinforcing member 74a Mounting piece 76 First link member 77 Second link member 78 Spring 80 Planting depth rolling stay 81 Float adjustment pipe 82 Arm 83 Rotor height sensor 84 Seedling planting depth control manual lever 85 Arm fixing part 95 Contaminant receiver 87 Rotor drive Case 94 Elevating link sensor 96 Rotor interlock on / off switch 97 Clutch shifter 98 Blade 99 Clutch cable 100 Control device 101 Hook 102, 103 Rotation sensor 104, 105 Arm for supporting rotation sensor

Claims (1)

A traveling vehicle body (2) having a pair of front and rear wheels (10, 11);
A wheel speed sensor (6) for detecting the speed of each of the pair of front and rear wheels (10, 11);
A seedling planting section (4) having a plurality of seedling planting tools (52a) provided at the rear of the traveling vehicle body (2) so as to be movable up and down;
A leveling tool (27a, 27b) that is disposed so as to be movable up and down with respect to the seedling planting part (4) and directed in the width direction of the traveling vehicle body (2), and grounds the ground by grounding, and the leveling tool (27a). 27b), a leveling implement cover (37) comprising an upper part (37a) and a rear part (37b) covering the upper part and the rear part, respectively,
A steering device (24) for turning the traveling vehicle body (2);
A turning sensor (7) for detecting a turning angle of the steering device (24);
The travel distance from the start of turning of the steering device (24) detected by the turning sensor (7) is measured based on the rotational speed detected by the rotational speed sensor (6) of the wheel inside the turning, and the measured travel distance is Control that can set an automatic planting start mode that automatically starts seedling planting in the field by the seedling planting unit (4) when reaching a predetermined value, and a leveling tool (27a, Rotate the rear part (37b) with the rear end part of the upper part (37a) of the leveling implement cover (37) as a fulcrum so as not to ground 27b), and ground the rear end part of the rear part (37b) to the field A seedling transplanting machine, comprising a control device that controls the raising and lowering of the seedling planting part (4).

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