CN217850105U - Transplanting machine - Google Patents

Abstract

The utility model provides a transplanter, it is difficult to produce the damage that the load of axletree arouses, takes advantage of and falls in organism front side easily irrelevantly with the height of car height. The transplanting mechanism is characterized in that a traveling device (44), a traveling transmission device (38) for transmitting power to the traveling device (44) and planting buckets (20 a, 20 b) for planting seedlings are arranged on a traveling vehicle body (40), the traveling device (44) is assembled on the traveling transmission device (38) through an axle (12), the cross-sectional shape of the axle (12) is the same from one side where the traveling device (44) is assembled to one side where the traveling transmission device (38) is assembled, the traveling device (44) is assembled on one side of the axle (12), the traveling transmission device (38) is assembled on the other side, and one or more adjusting members (36) for adjusting the interval between the traveling device (44) and the traveling transmission device (38) are rotatably assembled between the traveling device (44) and the traveling transmission device (38) of the axle (12).

Description

Transplanting machine

Technical Field

The utility model relates to a vegetable seedling transplanting machine for transplanting onions, lettuce and the like to farmlands.

Background

Conventionally, a transplanter in which a travel wheel is mounted on one end of an axle mounted on a travel transmission case is known (patent document 1).

In addition, the following transplanters are known: an operator gets on a working seat provided on a traveling vehicle body, and the operator throws seedlings into the seedling feeder and plants the thrown seedlings by the seedling planting device (patent document 2).

The transplanter is provided with a bottom pedal for a worker to move on a traveling vehicle body, and the front side of the body, which has a high frequency of riding in and out, is formed to have a lower vertical height than other parts. This makes it easy for the operator to step on his/her foot when he/she gets in the vehicle, and makes the fall small when he/she gets down, thereby enabling the operator to quickly and safely get in and out of the vehicle.

Documents of the prior art

Patent literature

Patent document 1: japanese laid-open patent publication No. 2010-148378

Patent document 2: japanese patent application laid-open No. 2010-75107

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

However, in the transplanter disclosed in patent document 1, since the hub of the traveling wheel passing through the axle and the shaft hole of the transmission sprocket built in the traveling transmission case are different in size, the diameter of the axle needs to be different between the side attached to the hub and the side attached to the shaft hole.

Thus, there are the following problems: when the load is continuously transmitted from the running wheels, breakage such as bending or breaking is likely to occur in portions having different shaft diameters.

In the transplanter disclosed in patent document 2, when the vehicle height is raised in accordance with the height of the ridge, the vertical height of the front side of the bottom step is also relatively raised, and therefore, the operator must raise his or her foot to get in the transplanter, which requires extra labor. Further, since the drop height also increases, it is necessary to pay attention to the operator when the operator gets on or off the vehicle, which causes a problem of lowering the work efficiency.

The present invention has been made in view of the conventional problems, and an object of the present invention is to provide a transplanter which is less likely to be damaged by the load of an axle and which can easily get on and off the front side of a machine body regardless of the height of the vehicle.

Means for solving the problems

In order to solve the above problems, the following technical means are adopted.

The utility model discloses a scheme 1 is a transplanter, is equipped with: a running vehicle body 40; a traveling device 44 that supports the traveling vehicle body 40 to be capable of traveling; a travel transmission 38 that transmits power to a travel device 44; and planting buckets 20a, 20b for planting seedlings, characterized in that the traveling device 44 is mounted on the traveling transmission device 38 via the axle 12, and the cross-sectional shape of the axle 12 is the same from the side where the traveling device 44 is mounted to the side where the traveling transmission device 38 is mounted.

Case 2 is the transplanter according to case 1, wherein,

a travel device 44 is mounted on one side of the axle 12, a travel transmission 38 is mounted on the other side, and one or more adjustment members 36 for adjusting the distance between the travel device 44 and the travel transmission 38 are rotatably mounted between the travel device 44 and the travel transmission 38 of the axle 12.

Protocol 3 is the transplanter according to protocol 1 or 2, characterized in that,

riding sections 46 and 122 on which workers ride are provided on the running vehicle body 40, riding and descending mechanisms 173 used when riding on and descending from the riding sections 46 and 122 and ridge end detection devices 182 for detecting the end portions of the reached ridges are provided on the front side of the running vehicle body 40, one of the riding and descending mechanisms 173 and the ridge end detection devices 182 is disposed on one of the left and right sides of the machine body, and the other is disposed on the other of the left and right sides of the machine body.

Effect of the utility model

According to the utility model of claim 1, since the portion that is easily bent when a load is applied is not formed on the axle 12, the vehicle is prevented from being unable to travel due to deformation of the axle 12.

In addition, when manufacturing the axle 12, it is not necessary to make the shape of the side where the travel device 44 is assembled different from the shape of the side where the travel transmission device 38 is assembled, and processing becomes easy, and productivity improves.

According to the utility model of claim 2, in addition to the effect of the utility model of claim 1, since the left-right interval between the traveling device 44 and the traveling transmission device 38 can be adjusted by the attachment/detachment adjustment member 36, even if the operating conditions such as the ridge width are different, it is possible to easily cope with the difference.

Further, since the adjustment member 36 is rotatably attached to the axle 12, it is possible to prevent the axle 12 from being entangled with foreign matter such as stems and leaves of crops, and thus it is possible to reduce the time and labor required for the operation of removing the foreign matter.

In addition, since the axle 12 can be prevented from being corroded by the components of the entangled inclusions, the durability of the axle 12 is improved.

According to the utility model of the aspect 3, in addition to the effect of the utility model of the aspect 1 or 2, since the riding mechanism 173 and the ridge end detection device 182 are disposed on different sides on the left and right of the body, the ridge end detection device 182 is prevented from interfering with riding on and off of the operator, and the ridge end detection device 182 is prevented from being damaged by contact with the operator.

In addition, since the weight deviation in the left-right direction of the machine body is suppressed, the traveling vehicle body 40 stably travels, and the planting posture of the seedlings by the planting buckets 20a and 20b is stabilized.

Drawings

Fig. 1 is a left side view of the transplanter.

Fig. 2 is a right side view of the transplanter.

Fig. 3 is a rear view of the transplanter.

Fig. 4 is a front view of the transplanter.

Fig. 5 is a top view of the transplanter.

Fig. 6 is a plan view of a main part showing the periphery of the bumper on the front side of the body.

Fig. 7 is a side view showing a main part of the periphery of the damper on the front side of the body.

Fig. 8 is a perspective view of a main portion showing the periphery of the bumper on the front side of the body.

Fig. 9 is a rear view of a main part showing a state where travel wheels are fitted to a travel transmission case via axles.

Fig. 10 is a rear view of a main portion showing another example of a state in which travel wheels are fitted to a travel transmission case via axles.

Fig. 11 is a perspective view showing an axle having the same cross-sectional shape in the right-left direction.

In the figure:

12-axle, 20 a-planting bucket, 20 b-planting bucket, 21-up-and-down movement mechanism, 38-driving transmission device, 40-driving vehicle body, 44-driving device, 46-working seat (riding part), 122-bottom pedal (riding part), 173-riding and descending mechanism (riding and descending mechanism), 182-ridge end detection device (ridge end detection device).

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a left side view of a transplanter 10 for transplanting seedlings as an example of the transplanter according to the embodiment of the present invention, fig. 2 is a right side view, fig. 3 is a rear view, fig. 4 is a front view, and fig. 5 is a plan view.

In the following description, the side on which the handle 404 is disposed is referred to as the rear side, and the opposite side, that is, the side on which the engine 41 is disposed is referred to as the front side. The right hand side is set as the right side and the left hand side is set as the left side toward the front side of the body.

As shown in fig. 1 to 5, the transplanter 10 of the present embodiment includes: a traveling vehicle body 40 capable of traveling forward; a walk-like manipulation handle 404 provided at the rear portion of the traveling vehicle body 40; a planting device 42 for planting the seedlings into the field; and a seedling feeder 43 for feeding seedlings to the planting device 42.

The traveling vehicle body 40 is provided with a transmission case 39 at a front portion of the vehicle body, and an engine 41 as a driving device is provided on a front side of the transmission case 39. An axle cover for covering an axle capable of adjusting a tread to change a left-right position of a running gear 44 serving as a rear wheel is connected to a lower portion on the rear side of the machine body on both left and right sides of the transmission case 39, and a running gear 38 is vertically rotatably attached to an outer end of the machine body of the axle cover, and the running gear 38 transmits a driving force to the running gear 44 provided on the rear side of the machine body via the axle 12.

The left and right traveling devices 44 are respectively provided between the left and right traveling transmission 38 and the traveling vehicle body 40, thereby suppressing the left and right width of the machine body. However, if the left and right traveling devices 44 are configured to be able to be mounted on the outside of the body of the traveling transmission 38 in order to meet the conditions such as the ridge width for planting seedlings, the number of operational conditions that can be met can be increased.

More precisely, the following structure: the left and right axle covers are attached to be rotatable about an inner axle (not shown) as a fulcrum, the travel transmission device 38 is attached to each of these axle covers, and the travel transmission device 38 is rotated up and down by the extension and contraction of a lifting hydraulic cylinder 300 and a tilt cylinder 310, which will be described later.

As shown in fig. 1 to 5, a base plate 400 is provided on the transmission case 26, which transmits power from the transmission case 39 and branches the power to the planting device 42 and the seedling feeder 43, so as to cover at least the left and right side surfaces and the back surface of the transmission case 26, and a frame support 401 is detachably provided on the back of the base plate 400 via a fixing member such as a bolt. The frame support 401 is provided with a handle frame 402 protruding in a shape drawing an arc upward toward the rear side of the machine body, a control unit 403 for operating vertical adjustment of the vehicle height, traveling, on/off of transmission of planting work, and the like is provided at the rear portion of the handle frame 402, and a control handle 404 to be held by an operator when the operator operates the machine body, such as when the seedling is not moved. The steering handle 404 is curved toward the left and right sides of the body and toward the rear of the body with the handle frame 402 as a center, and side clutch levers 405 for turning on and off the transmission to the traveling device 44 are provided on the left and right rear sides, respectively. Further, a first throttle lever 406 that increases and decreases the output of the engine 41 is provided on either the left or right side of the joystick 47.

A control panel 47a is provided between the left and right sides of the handle 404, and the control panel 47a includes: a vehicle height adjusting lever 123 for adjusting the height of the traveling vehicle body 40 by telescopic operation of the lifting hydraulic cylinder 300; a main clutch lever 125 that turns on and off the transmission of the driving force to the left and right travel transmission 38 and the transmission case 26; a first engine switch 407 that switches whether the engine 41 is started or not and performs a stop operation; and a main gear lever 150 for switching the traveling transmission of the traveling vehicle body 40 to any one of a traveling speed, a planting work speed, a traveling neutral, and a backward movement.

A seedling feeder 43 for conveying seedlings thrown in by an operator to the right and left seed hoppers 20a and 20b, which will be described later, is provided on the front side of the machine body of the manipulating handle 47 and above the transmission case 26. A reinforcing frame 152 in the front-rear direction is provided over the rear portion of the seedling feeder 43 and a reinforcing connection support 151 provided on the rear upper portion of the handle frame 402 and on the front side of the steering panel 47a, to improve the strength in the vicinity of the steering handle 47 and the seedling feeder 43 and to reduce vibration.

A body front portion of a front riding step 113 on which a worker steps when riding in and out from the body front is mounted on the body left side, which is the body left side, on the body left side of the traveling vehicle body 40. On the other hand, a row spacing switching cover 114 for supporting a planting shift lever 803 is formed on the other side of the right and left of the machine body, that is, on the right side of the machine body, and the planting shift lever 803 is configured to select a first planting speed or a second planting speed when a row spacing main shift lever 801 and a row spacing auxiliary shift lever 802, which are so-called row spacing, and a main shift lever 150, which are the intervals between seedlings planted in the planting hoppers 20a and 20b, are set to the planting speeds, are operated.

Further, the front riding board 113 and the planting distance switching cover 114 are formed symmetrically, and a member provided on one of the left and right sides of the machine body may be the planting distance switching cover 114, and a member provided on the other of the left and right sides of the machine body may be the front riding board 113.

Further, side steps 118 are provided on the rear side of the machine body of the front side boarding step 113 and the inter-row distance switching cover 114, respectively, for allowing the operator to get on and off from the side of the machine body and to serve as a footing for work. The side step 118 is configured such that a plurality of spaces are formed by arranging plates vertically and horizontally in a frame, and mud attached to the sole of a worker falls downward. Further, a center step 119 serving as a standing point for a riding operator is detachably provided between the left and right sides of the left and right side steps 118.

According to the above structure, the bottom step 122 is constituted.

The front side riding board 113, the inter-row distance changing cover 114, the left and right side boards 118, and the center board 119 are mounted independently of each other, that is, are not connected by one mounting member (a bolt or the like). Therefore, when each pedal structure is disassembled during partial maintenance operation, other pedal structures do not need to be disassembled, and the efficiency of maintenance operation is improved.

An entry/exit assist mechanism 170, which an operator steps on when entering and exiting the front-side boarding pedal 113, is attached to a front lower portion of the front-side boarding pedal 113. The boarding/alighting assistance mechanism 170 includes: an outer support arm 171 which is positioned outside the body, has an L-shape in side view, and has a first protruding portion 171a protruding forward of the body below the bent portion; an inner support arm 172 located inside the machine body, having an L-shape in front view, and having a second protruding portion 172a protruding outside the machine body below the bent portion; and an ascending/descending mechanism 173 provided over the first protrusion 171a and the second protrusion 172 a.

The outer support arm 171 is coupled to the running vehicle body 40 together with the pedal support plate 111 by a coupling bolt 174. The inner support arm 172 is coupled to the damper plate 109a by a coupling bolt 174 and assembled to the running vehicle body 40.

Thus, since the plurality of members are fastened by the connecting bolt 174, the strength of the traveling vehicle body 40 in the vicinity of the front side of the machine body is improved, and the reduction in durability due to the load when the operator rides in and out is reduced.

Further, by providing the riding and descending mechanism 173, even if the height of the traveling vehicle body 40 is raised in accordance with the height of the ridge or the like, the operator can step on the riding and descending mechanism 173 with his foot, and can step on the lower footrest 113a of the front riding step 113 in stages to ride in, and can descend by the reverse operation, so that there is no need to raise his foot or jump down during riding and descending, and the burden on the operator's body is reduced.

Further, since the ascending and descending mechanism 173 is provided over the first protruding portion 171a and the second protruding portion 172a, the outer support arm 171 and the inner support arm 172 are not positioned within the lateral width of the ascending and descending mechanism 173, and thus the feet of the operator are prevented from contacting the outer support arm 171 and the inner support arm 172.

On the other hand, when the vehicle height of the traveling vehicle body 40 is lowered or during the planting work, the above-described riding and lowering assistance mechanism 170 is not necessary, and the ridge may be collapsed by contacting the ridge surface or the ridge normal surface depending on the vehicle height, and the planting accuracy of the seedling may be lowered.

In order to prevent this, the bases of the outer support arms 171 and the inner support arms 172 may be attached by double nuts (not shown), the outer support arms 171 and the inner support arms 172 may be attached to be rotatable about the connecting bolts 174 as rotation fulcrums, and the boarding/alighting assistance mechanism 170 may be configured to be rotatable up and down.

According to the above configuration, since the lifting/lowering assistance mechanism 170 can be rotated above the ridge surface when it is unnecessary, the lifting/lowering assistance mechanism 170 is prevented from collapsing the ridges, and the planting accuracy of the seedlings is maintained.

As shown in fig. 1 to 8, a ridge end detection device support 182a that supports a ridge end detection device 182 for operating a notification device that notifies an operator that the traveling vehicle body 40 has reached the ridge surface by rotating downward by its own weight and has reached the farmland end by further rotating downward when not reaching the ridge end and being grounded is provided at the lower portion of the row spacing switching cover 114. The notification device is an alarm or a lamp mounted on each part of the traveling vehicle body 40, or a communication device that notifies an information terminal (a tablet pc, a smartphone, or the like) of an operator.

The ridge end detection device 182 is configured such that a sensor arm 183 is provided rotatably, a ridge surface ground roller 184 is rotatably attached to the lower portion of the sensor arm 183, a ground biasing spring 185 that biases the sensor arm 183 downward is provided, and a ridge end detection switch 186 that is turned on (or off) when the angle is equal to or greater than a predetermined angle is provided at the base of the sensor arm 183. The ground biasing spring 185 is attached to a detection adjustment plate 187 capable of adjusting the angle along the elongated hole on the upper end side, and is capable of changing the angle of operation in accordance with the ridge height.

When the planting operation of the seedling is started, the ridge end detection device 182 is brought into contact with the ridge surface by adjusting the height of the traveling vehicle body 40. By grounding the freely rotatable ridge surface grounding rollers 184, the ridge surfaces are not easily collapsed, and fine irregularities can be made uniform, thereby improving the planting accuracy of the seedlings.

When the traveling vehicle body 40 further moves forward and reaches the end of the ridge and the ridge surface ground roller 184 does not contact the ridge surface, the sensor arm 183 rotates downward due to the biasing force of the ground biasing spring 185 and the weight of the sensor arm 183 and the ridge surface ground roller 184, and the ridge end detection switch 186 is not pressed. When the ridge end detection switch 186 is not pressed, the notification device is energized and operates to notify the operator that the vicinity of the body front end of the traveling vehicle body 40 reaches the ridge end.

Further, since the planting space of several plants remains in the ridge at the time point when the ridge end detection device 182 detects the ridge end, the operator prepares for the stop operation while throwing the seedlings planted in the remaining planting space into the seedling supply device 43 without immediately stopping the machine body.

Therefore, the operator can know the approaching ridge end without looking back, so that the machine body can be stopped at the time of finishing planting the seedling on the ridge, and the fuel consumption caused by excessive running and the moving distance to the next operation line are prevented from being increased.

In addition, since the number of seedlings to be fed to the seedling feeder 43 can be adjusted when the seedlings approach the ridge end, even if the operation of stopping the traveling of the planting work is delayed and the planting buckets 20a and 20b perform the planting operation, seedlings are prevented from being left out at the ridge portion.

As shown in fig. 4, 6, and 7, the sensor arms 183 may be a pair of left and right sensor arms 183a, the ridge surface ground rollers 184 may be rotatably mounted on the left and right ridge surface ground rollers 184a, and the left and right ridge end detection switches 186 may be provided.

Thus, when one of the left and right sensor arms 183 is rotated downward and one of the corresponding ridge end detection switches 186 is not pressed, the notification device operates to easily detect the ridge end even if the ridge end collapses due to wind and rain and has a disordered shape, and the operator can perform the planting operation travel stop operation with good timing.

Further, front wheels 45 are provided on both left and right sides of the body front side of the traveling vehicle body 40 and on the body front side of the traveling device 44, and the front wheels 45 are supported so as to be rollable via a lateral frame 16 provided on the lower side of the front beam frame 110 and protruding in the body left-right direction.

The front end of the wheel drive shaft extending from the transmission case 39 to both the left and right outer sides enters the rotation axis position of the front portion of the travel transmission device 38, and the power for traveling passing through the travel unit-side speed change transmission unit in the transmission case 39 is transmitted to the transmission mechanism in the travel transmission device 38. Moreover, the following structure is made: the power for traveling is transmitted to the axle 12 of the travel transmission device 38 via a transmission mechanism in the travel transmission device 38, and the travel device 44 is driven to rotate.

As shown in fig. 9 and 10, the axle 12 is attached to a traveling driven sprocket 38a incorporated in the rear portion of the traveling transmission device 38 on one side and is inserted into an attachment boss 44a of the traveling device 44 on the other side. Thereby, the traveling device 44 is rotationally driven by the driving force transmitted by the traveling transmission device 38.

The diameter of a mounting hole (not shown) for mounting the traveling driven sprocket 38a of the axle 12 is the same as the diameter of the mounting boss 44a, and as shown in fig. 11, the outer diameter of the axle 12 is formed to have the same diameter in the left-right direction. That is, the cross-sectional shape of the axle 12 is the same in the left-right direction.

This makes it difficult to generate a weak portion in strength against a load applied to the axle 12 due to the ground contact of the traveling device 44, unevenness of a farm field, contact with an obstacle, or the like, and prevents the axle 12 from being bent or broken and becoming unable to travel.

Further, since the axle 12 does not need to be formed with a large diameter portion, a small diameter portion, or the like, and can be formed integrally of substantially the same material, the processing is easy, and the productivity of the component is improved.

The shape of the axle 12 may be a cylinder, but may be a polygonal shape such as a hexagonal axis or the like, which is more resistant to bending force.

As shown in fig. 9, a collar 36 having a diameter slightly larger than the axle 12 is rotatably fitted between the traveling device 44 and the traveling transmission 38 on the left and right sides and on the outer periphery of the axle 12. The collar 36 has a circular inner peripheral shape regardless of the shape of the axle 12, and is prevented from rotating without engaging with the axle 12. On the other hand, the outer peripheral shape may not be circular but polygonal.

The collar 36 is attached to prevent foreign matter such as stems and leaves of crops which have been cultivated in agricultural fields from being entangled with the rotating axle 12, and has a left-right width substantially equal to a length between the left and right sides of the traveling device 44 and the traveling transmission 38. In other words, the following structure is obtained: the distance of the travel device 44 from the travel drive 38 is varied by fitting collars 36 of different widths to the left and right.

Alternatively, as shown in fig. 10, the following structure may be adopted: a plurality of collars 36 are provided between the travel device 44 and the left and right of the travel transmission 38 to adjust the distance between the travel device 44 and the left and right of the travel transmission 38.

As shown in fig. 9 and 10, the traveling driven sprocket 38a is rotatably mounted inside the traveling transmission device 38 via a bearing 38b, and the axle 12 is mounted so as to penetrate the traveling driven sprocket 38a in the left-right direction. Further, the following structure is made: the end of the axle 12 on the travel transmission 38 side penetrates a wall surface of the travel transmission 38 on the inner side of the body, and is assembled by a washer 35 and a bolt 34.

According to the above configuration, when the bolt 34 located outside the travel transmission 38 is removed, the axle 12 can be easily pulled out from the travel driven sprocket 38a, and therefore, the collar 36 can be replaced or increased or decreased, and the left-right distance between the travel device 44 and the travel transmission 38 can be easily adjusted.

This improves work efficiency, and also makes the treads of the left and right traveling devices 44 coincide with the difference in ridge width between farmlands, work places, and the like, thereby preventing the traveling devices 44 from collapsing due to contact with ridges in planting work, particularly the left and right normal surfaces of the ridges. When the ridges collapse, the roots of the planted seedlings may be exposed to the outside, and thus poor growth or withering may occur due to the influence of the outside air, and insect damage may be caused by birds, beasts or insects.

Further, by rotatably mounting the collar 36 to the axle 12, even if foreign matter such as long stems and leaves that have fallen into the field during the previous harvesting work gets caught on the axle 12, the foreign matter can be fallen again by rotation or caught on the collar 36. This can prevent the inclusion from being entangled in the axle 12, and therefore, the operation of removing the entangled inclusion from the axle 12 is not required, thereby reducing the labor.

In addition, moisture or chemical components exuded from the inclusions are prevented from adhering to the axle 12, and the durability of the axle 12 is reduced by corrosion.

Further, the outer peripheral surface of the collar 36 is smoothed or coated with a material that inhibits winding so as to facilitate separation even when foreign objects are wound, thereby improving the above-described effects. The collar 36 or the coating material on the surface is preferably a material having high resistance to chemical components of plants.

The left and right traveling devices 44 can be disconnected from each other by left and right clutches (not shown) provided in the transmission case 39. Therefore, the following structure is made: when the machine body is rotated, the traveling device 44 on the left and right sides, which is on the inside of the rotation, is placed in a non-driving state by the side clutch and can be smoothly rotated.

A drive mechanism for vertically rotating the traveling device 44 upward and downward with the front side of the traveling transmission device 38 as a rotation fulcrum is connected to the traveling transmission device 38. Specifically, the arm 13 extending upward is integrally attached to the attachment portion of the travel transmission device 38 to the transmission case 39, and the arm 13 is connected to both right and left sides of a connecting body attached to the front end of a piston rod of the hydraulic cylinder 300 for lifting fixed to the transmission case 39. One of the left and right sides (right side) is connected by a connecting rod, and the other side (left side) is connected by a left and right horizontal control hydraulic cylinder which can perform telescopic operation corresponding to the inclination of the machine body.

When the lifting cylinder 300 is operated and the piston rod thereof protrudes rearward of the machine body, the left and right arms 13 rotate rearward, and the travel transmission device 38 rotates downward in response to this rotation, and the machine body rises. Conversely, when the piston rod of the hydraulic cylinder 300 for lifting moves forward in the machine body and is drawn into the cylinder, the left and right arms 13 rotate forward, and the travel transmission device 38 rotates upward in association therewith, and the machine body descends.

The elevation cylinder 300 is operated by a ridge sensor 14, and the ridge sensor 14 is grounded to the ridge surface and operates with the variation in the vertical interval between the machine body and the ridge surface. The operation of the ridge surface sensor 14 is an operation of detecting the height of the upper surface of the ridge with reference to the position of the machine body, and the elevation cylinder 300 is operated by setting the height of the machine body in accordance with the height of the upper surface of the ridge based on the detection operation of the ridge surface sensor 14.

When the left and right horizontal control hydraulic cylinders are extended and contracted, the left arm 13 connected to the left and right horizontal control hydraulic cylinders is turned, and only the left traveling device 44 is moved up and down to tilt the body in the left and right direction. The left-right horizontal control hydraulic cylinder is configured to operate based on a detection result of a sensor that detects a left-right inclination of the machine body with reference to the left-right horizontal plane, thereby making the machine body horizontal.

As shown in fig. 1, 2, and 5, the lateral frame 16 is pivotally mounted to the front frame 110 about an axial center in the front-rear direction, and vertical frames 17 that are vertically long are mounted to both left and right sides of the lateral frame 16. The left and right front wheels 45 are rotatably attached to a front wheel axle 18 fastened to the side of the lower end portion of the vertical frame 17. Therefore, the right and left front wheels 45 are free to swing about the axis in the front-rear direction at the right and left center of the machine body. The vertical frame 17 is configured to be vertically adjustable with reference to both left and right side portions of the horizontal frame 16, and the height of the front wheel 45 can be adjusted.

The steering handle 47 is provided at the rear of the machine body and is located at the rear of the machine body with respect to the axle 12 of the traveling device 44. Specifically, the front end portion is attached to the rear end portion of the body frame 19 fixed to the transmission case 39.

The body frame 19 extends rearward at the right and left center of the body, and extends obliquely rearward and upward from the front-rear middle portion.

The handle 47 extends rearward from the rear end of the body frame 19 in the right and left directions, and each rear end thereof serves as a grip portion of the handle 47.

In fig. 2, the grip portion is divided into left and right portions, and the left and right rear end portions of the joystick 47 may be connected to each other in the left and right directions to form the connected portion as the grip portion.

The planting device 42 includes: a plurality of planting tools in a mouth shape, the front ends of which are downward; a vertical movement mechanism 21 for vertically moving the planting tool between a position above the surface of the agricultural field and a position below the surface of the agricultural field at the lower end of the planting tool; and an opening/closing mechanism for opening and closing the planting tool in a closed state in which the lower end of the mouth-shaped planting tool is closed and the seedling is received from above and is stored inside, and in an open state in which the lower end of the planting tool is opened in the left-right direction and the seedling stored inside is released downward.

As shown in fig. 1 to 5, the planting device 42 of the present embodiment is configured to plant seeds in two rows in which the first planting bucket 20a and the second planting bucket 20b are arranged side by side on the left and right. The first planting bucket 20a and the second planting bucket 20b are respectively mounted on the vertical movement mechanism 21, and the vertical movement mechanism 21 is provided on both right and left sides of the transmission case 26 transmitted from the transmission case 39.

Each seedling container 22 has a tubular body having an upper and lower opening, and a bottom cover for opening and closing the lower opening of the tubular body, and is connected to each other in a ring shape.

The moving mechanism 23 rotates the seedling container 22 coupled to the long and long circular path extending in the left-right direction in a plan view of the machine body counterclockwise in a state where the coupled seedling containers 22 pass through the vicinity of the upper portions of the left and right planting buckets 20a and 20 b.

The seedling dropping mechanism opens the bottom cover of the seedling container 22 at a position above the planting buckets 20a and 20b corresponding to the seedling container 22.

In the present embodiment, a cylindrical outer peripheral portion is formed on the outer periphery of the seedling container 22, and an engaging portion (circular hole) connected to the cylindrical outer peripheral portion so as to be rotatable from the outside is provided, thereby forming a plurality of connecting bodies for connecting two seedling containers 22. Moreover, the following structure is made: the engaging portion of the coupling member is rotatably connected to the cylindrical outer peripheral portion of the seedling container 22, and the plurality of seedling containers 22 are coupled to each other in a state where the adjacent seedling containers 22 are rotatably coupled with the cylindrical outer peripheral portion as a rotation axis. That is, the seedling container 22 and the connecting member are connected to each other as an endless chain.

Thus, the seedling container 22 does not change the interval between the seedling container 22 adjacent thereto, regardless of whether it is in the linear portion 28 that moves linearly or in the arc-shaped portion 29 that moves in an arc shape, and therefore, at the portions where seedlings are supplied from the seedling container 22 to the right and left planting buckets 20a, 20b, positional deviation with respect to the right and left planting buckets 20a, 20b of the seedling container 22 is less likely to occur, and it is possible to appropriately supply seedlings and to appropriately plant seedlings.

The moving mechanism 23 of the seedling feeder 43 has the following structure: seedling containers 22 connected to each other like an endless chain are wound around arcuate cutouts provided in the outer peripheries of the left and right sprockets, and the left and right sprockets are driven to rotate by power output from the inside of the transmission case 26, whereby the respective seedling containers 22 are rotated circumferentially.

The circumferential movement path around the seedling container 22 is an elongated circle having a straight portion 28 extending in the left-right direction in plan view and an arc-shaped portion 29 curved in an arc shape from the straight portion 28 to the front side or the rear side by a sprocket, and is disposed inside the body with respect to the left and right traveling devices 44.

The seedling containers 22 of the seedling feeder 43 move relatively stably in the predetermined direction in the linear portion 28, but the distance between the seedling containers 22 becomes narrow or wide in the arc-shaped portions 29 on both the right and left sides, and a load is applied to the driving of the seedling feeder 43 to break the seedling containers, which may make the timing of dropping and feeding the seedlings unstable. In order to prevent this, star wheels 240 for driving the seedling feeder 43 to rotate are provided on the inner peripheral edge portions of the plurality of seedling containers 22 and on both right and left outer side portions of the seedling feeder, respectively, and projections are formed at equal intervals on the outer peripheral edge portions of the star wheels 240. By making these projections enter the partitions of the seedling containers 22, the positions of the seedling containers 22 when they pass through the arc-shaped portions 29 on both the left and right sides of the seedling feeder 43 are secured, thereby preventing the occurrence of overload and the occurrence of deviation in the seedling drop supply timing.

The left and right planting buckets 20a and 20b are disposed on the rear side of the axle 12.

The seedling feeder 43 is configured such that the seedling container 22 moves in a successive cycle in accordance with the left and right planting buckets 20a and 20b to feed the seedlings.

The seedling is dropped and supplied from the seedling container 22 by the planting buckets 20a and 20b at the first drop supply position 31a and the second drop supply position 31b, respectively.

Moreover, the following structure is made: seedling containers 22 for storing seedlings to be dropped and supplied are provided corresponding to the left and right planting buckets 20a, 20b, and the seedling containers 22 open the bottom cover only when they are positioned above the corresponding left and right planting buckets 20a, 20b, and do not open the bottom cover when they are positioned above the non-corresponding left and right planting buckets 20a, 20 b.

Namely, the following structure is made: when the seedling receptacle 22 corresponding to the planting bucket 20a is in the first drop-and-feed position 31a only and when the seedling receptacle 22 corresponding to the planting bucket 20b is in the second drop-and-feed position 31b only, the bottom cover thereof is opened to supply seedlings to the corresponding planting buckets 20a and 20 b.

In addition, the following structure is made: when the row pitch of the right and left planting buckets 20a and 20b is adjusted, the first drop supply position 31a and the second drop supply position 31b can be moved to the corresponding positions.

The operation cycle of the moving mechanism 23 is set in synchronization with the operation cycle of the up-and-down moving mechanism 21, and the seedling receivers 22 corresponding to the left and right planting buckets 20a, 20b are combined to form one seedling receiver unit, and a plurality of the seedling receiver units are connected, so that the seedling receivers 22 pass through the left and right dropping supply positions 31a, 31b in a row, and while corresponding to the left and right planting buckets 20a, 20b, seedlings can be supplied without missing seedling supply, and in order not to generate a seedling receiver 22 that does not supply seedlings after passing through the left and right dropping supply positions 31a, 31b, a structure is made such that seedlings can be supplied corresponding to all the left and right planting buckets 20a, 20 b.

The transplanter 10 of the present embodiment is provided with soil covering and compacting wheels 37 for covering and compacting soil in accordance with the seedlings planted in the left and right planting buckets 20a and 20b, at positions near the left and right sides of the rear of the seedling planting positions of the left and right planting buckets 20a and 20 b. The left and right soil-covering ground wheels 37 are composed of: a ground pressing arm 370 which is formed by bending one bar into a J-shape in plan view and is independently rotatable up and down; and a pair of right and left pressure ground rotating bodies 371 rotatably provided on the rear side of the right and left pressure ground arms 370, respectively.

Further, the ground pressing arm 370 is vertically rotatably attached to the rear portion side of the traveling vehicle body 40 at one end portion located inside the machine body, and is bent upward at the rear portion of a straight portion protruding rearward, then bent outward of the machine body, and bent downward to be bent forward of the machine body at the same vertical position as the straight portion inside the machine body. The outer side of the body of the right and left pressure rotating bodies 371 is provided on the straight line portion of the outer side of the body bent toward the front side of the body, and the inner side of the body is attached to the straight line portion of the inner side of the body 371.

According to the above configuration, the avoidance portion 372 is formed at the rear portion of the grounding arm 370 to protrude upward of the machine body, and the left and right grounding rotating bodies 371 are arranged with a left and right gap. Thus, the seedlings planted in the planting buckets 20a and 20b pass through the left and right spacers 371 of the left and right soil pressing rotators and flatten the soil around the seedlings, and pass under the avoiding portion 372, thereby preventing the soil-covered soil pressing wheels 37 and 37 from being pushed to disturb the planting posture.

The left and right ground pressing arms 370 are respectively installed to be able to adjust the left and right positions of the machine body, and are configured to be able to change the ground pressing positions in accordance with the line pitch setting of the planting buckets 20a and 20 b. Further, if the left and right soil-pressing rotary bodies 371 are configured to be adjustable in the left and right positions, the soil around the planted seedlings is reliably fixed, and the seedlings are prevented from falling down or from being poorly developed due to low temperature.

In order to carry out the seedling replenishing work by riding a worker who replenishes the seedlings to the seedling feeder 43, the transplanter of the present application is provided with a work seat 46 on which the worker sits. Specifically, the work seat 46 is disposed rearward at the center of the right and left of the body, which is the front side of the seedling feeder 43. The operator seated in the work seat 46 sits in a posture of facing the front side portion of the seedling feeder 43 to the rear side, and performs the seedling replenishing work corresponding to the front side portion of the seedling feeder 43, particularly the front linear portion 28 in the circumferential movement path of the seedling container 22.

A main clutch lever 125 is provided on the other of the left and right sides of the steering panel 47a, and the main clutch lever 125 is incorporated in the transmission case 39 and turns on/off the transmission of the driving force to the left and right travel transmission devices 38 and the transmission case 26.

On both right and left sides of the work seat 46, and at a position above the axle 12 of the travel device 44 when viewed from the side of the machine body, spare seedling frames 50 capable of storing seedlings replenished to the seedling supply device 43 are provided.

The spare seedling frame 50 is configured such that a support column is provided above a seedling support column projecting to the outside of the machine body of the traveling vehicle body 40, a seedling support swing arm capable of switching between a swing state and a non-swing state is provided at the support column, a seedling frame in the vertical direction is disposed at an interval at the seedling support swing arm, one end portion of a mounting table 55 is mounted on the same surface of the seedling frame, and a container such as a seedling box or a seedling tray for accommodating a seedling for supplement is mounted on the mounting table 55.

The mounting table 55 may be provided only one in the vertical direction, but may be disposed in plural at intervals in the vertical direction so as to allow the container to be taken out without any trouble.

Claims (2)

1. A transplanter is provided with: a running vehicle body (40); a traveling device (44) that supports the traveling vehicle body (40) so as to be able to travel; a travel transmission device (38) for transmitting power to the travel device (44); and planting buckets (20 a, 20 b) for planting the seedlings, characterized in that,

the traveling device (44) is mounted to the traveling transmission device (38) via the axle (12), the cross-sectional shape of the axle (12) is the same from the side where the traveling device (44) is mounted to the side where the traveling transmission device (38) is mounted,

a travel device (44) is mounted on one side of the axle (12) and a travel gear (38) is mounted on the other side, and,

one or more adjusting members (36) for adjusting the distance between the travel device (44) and the travel transmission device (38) are rotatably mounted between the travel device (44) and the travel transmission device (38) of the axle (12).

2. Transplanting machine according to claim 1,

riding parts (46, 122) on which a worker rides are provided on a traveling vehicle body (40), a riding and descending mechanism (173) used when riding and descending with respect to the riding parts (46, 122) and a ridge end detection device (182) for detecting the end of a ridge are provided on the front side of the traveling vehicle body (40),

one of the riding and landing mechanism (173) and the ridge end detection device (182) is disposed on one of the left and right sides of the machine body, and the other is disposed on the other of the left and right sides of the machine body.

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