JP2012125178A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter capable of recognizing condition of seedlings to be supplied in a rear end part of a seedling tank without requiring a stoppage of planting travel when warning of reduction in an amount of seedlings is issued.SOLUTION: The seedling transplanter is composed of a riding-type traveling vehicle (2) for travelling in a field and a seedling transplantation part (4). The seedling transplantation part (4) is configured by providing: a plurality of seedling tanks (51); a planting device (52); detection members (71) for detecting the reduction in the amount of seedlings that detects seedling supply of each seedling tank (51), respectively; and a notifying member thereof, and includes: a condition sensing member (73) for sensing the supply condition of loading seedlings in the rear end side of the seedling tanks (51) and reflecting to the notifying member; a movable support mechanism (74) for movably supporting the condition sensing member (73) at the position where the condition sensing member can sense the each seedling tanks (51); and a moving control part for moving the condition sensing member (73) at the position of the seedling tank corresponding to the detected signal of the detection members (71) for detecting the reduction in the amount of seedlings by moving control of the movable support mechanism (74), for a predetermined holding time.

Description

The present invention relates to a seedling transplanting machine in which a transplanting part for planting seedlings in a farm field is provided at the rear part of a riding type traveling vehicle body capable of traveling in the field so as to be movable up and down.

As shown in Patent Document 1 or Patent Document 2, a seedling transplanting machine is known in which a transplanting part is provided at the rear part of a riding-type traveling vehicle body capable of traveling in a field so as to be movable up and down. The transplanting section consists of a seedling tank that mounts a seedling mat for each planting line and feeds seedlings in order to the rear end of each seedling, and a planting device that transplants seedlings taken out from the rear end of this seedling tank to the field Then, the transplanting part is lowered to the farm scene to perform planting, and the transplanting part is raised to the non-working position to perform turning and moving.

When planting, the operator operates the aircraft along the planned line for planting while checking the remaining amount of seedlings in the seedling tank at the rear of the aircraft and the planting status behind the aircraft. When the remaining seedling supply in the seedling tank has decreased, it is necessary to stop the planting operation and replenish the seedling tank with the mat seedling from the spare stand. A seedling tank is provided with a remaining amount sensor. By this remaining amount sensor and the seedling reduction warning, planting can be advanced without incurring a stock loss.

In addition, the remaining amount sensor of the seedling tank is not limited to the decrease of the supplied seedlings, but widely detects seedling supply abnormalities such as mat seedling up, mat seed tearing, and detection unit failure. It can respond to each situation. In other words, if the number of seedlings decreases, preparation for replenishing seedlings, and in the case of abnormal supply such as mat seedling up or tearing down, take appropriate actions such as descending from the fuselage and correcting the position of the mat seedlings or closing the intervals. Therefore, planting can be promoted without incurring a stock loss.

JP 2009-232809 A JP 2008-092881 A

However, in order to determine the seedling situation at the rear end of the seedling tank, it is necessary to stop the planting run, get up from the cockpit, and rely on the operator's visual judgment. Even if it is an alarm, since it is necessary to confirm that there is no supply abnormality, planting traveling must be stopped each time an alarm occurs, causing a problem that work efficiency is reduced.
In addition, the transplanting device placed at the lower rear end of the transplanting unit is used to prevent obstacles such as walls from being retracted by the transplanted unit that has been raised to the non-working position during reverse travel of the seedling transplanting machine, hindering visibility from the cockpit. There is a problem of causing interference with objects.

An object of the present invention is to provide a seedling transplanter that can grasp the status of the seedlings supplied at the rear end of a seedling tank without requiring stoppage of planting when a seedling reduction alarm is transmitted. is there.

The invention according to claim 1 is composed of a riding traveling vehicle body (2) for field traveling, and a transplanting portion (4) transplanted with a plurality of seedlings supported by raising and lowering the rear portion of the riding traveling vehicle body (2), The transplanting section (4) has a seedling tank (51) that feeds the loaded seedlings to the rear end side in a plurality of parallel arrangement configurations, and takes seedlings from the rear ends of the seedling tanks (51). A planting device (52) for planting in a farm field, a seedling amount decrease detecting member (71) for detecting that the number of seedlings loaded in the seedling tank (51) has decreased below a predetermined amount, and the seedling amount decrease detecting member (71 In the seedling transplanting machine provided with a notification member that notifies the operator in response to the detection signal of), a state detection that senses the supply state of the loaded seedling on the rear end side of the seedling tank (51) and reflects it on the notification member A member (73) and the state sensing member (73); The movable support mechanism (74) that moves to a position that can be detected with respect to the hook (51), and the movement control of the movable support mechanism (74) to the seedling tank position corresponding to the detection signal of the seedling amount decrease detection member (71). A seedling transplanting machine comprising a movement control unit for positioning the state sensing member (73) over a predetermined holding time.

When the seedling transplanter receives the detection signal of the seedling amount decrease detection member, the movement control unit moves the state detection member to the seedling tank position corresponding to the detection signal of the seedling amount decrease detection member along the movable support mechanism, This state detection member senses the supply state of the loaded seedling on the rear end side of the seedling tank, and operates the notification member for a predetermined holding time, so that the seedling loaded in the seedling tank is used up. Inform workers of abnormalities such as protruding from the seedling tank. .

In the invention according to claim 2, the state sensing member (73) senses the seedling supply state of the seedling tank (51) from the planting device rearward direction (D3), which is the direction for sensing the state after planting of the seedling. The rear end direction (D1) of the seedling tank (51) is configured so that the sensing direction can be switched to the rear end direction (D1) of the seedling tank and the seedling tank position corresponding to the detection signal of the seedling amount decrease detection member (71) The seedling transplanter according to claim 1, further comprising a direction control unit that maintains a predetermined holding time corresponding to the movement control unit.
When the seedling amount decrease detection member detects a decrease in seedling, the state detection member faces the seedling tank side for a predetermined time from the direction of the planting seedling. The state after attachment and the placement state of the seedling can be confirmed.
Further, when the predetermined time has elapsed, the state detection member rotates backward to detect the state after planting the seedling, so that the operation of the operator can be prevented from becoming complicated.

According to a third aspect of the present invention, the movable support mechanism (74) is provided between the left and right support columns (81, 81) attached to the planting device (52) at both ends and the left and right support columns (81, 81). It is composed of a rotating chain mechanism (82) that movably supports the state sensing member (73) and a drive actuator (82a) that is connected and driven at either one of the left and right ends of the rotating chain mechanism (82). A seedling transplanting machine according to claim 1 or claim 2 is provided.
By providing the right and left props of the movable support mechanism on the planting devices on both side ends, the sensing result can be sensed closer to the lower part of the seedling tank and the field scene, so the sensing result becomes more accurate. It becomes easy to confirm whether or not is in a normal working state.

The invention according to claim 4 is configured such that the movement control unit can switch the target position setting member (83) for determining the movement position of the state sensing member (73) from the non-operation state to the operation state. The setting member (83) is disposed at the position (P1, P2, P3) for detecting the state of each seedling tank (51), and the seedling tank (51) corresponding to the detection signal of the seedling amount decrease detection member (71). The seedling transplanting machine according to any one of claims 1 to 3, wherein the seedling transplanting machine is configured to switch to a working state.
The target position setting member is activated at a position where the state detection member needs to be detected, and the movement position of the state detection member is determined according to the target position setting member, so that the state detection member stops at an irrelevant position. Is prevented.

According to a fifth aspect of the present invention, when the predetermined holding time ends, the movement control unit and the direction control unit first detect signals of another seedling amount decrease detection member (71) transmitted during the predetermined holding time. The seedling transplanter according to any one of claims 2 to 4, characterized in that the position and direction are maintained for a predetermined holding time.
When the plurality of seedling amount decrease detection members are continuously detected, the seedling state can be detected for a predetermined time in the order detected by the seedling amount decrease detection member. Even if it falls from the seedling tank, the operator can be surely notified of the abnormality.

The invention according to claim 6 is characterized in that the state detection member (73) is configured by an imaging device that reflects the notification member as an image in a predetermined viewing angle range. A seedling transplanter was used.
By using the state sensing member as a photographing device, the operator can visually sense the state after planting the seedling and the state of the placed seedling.

In the invention according to claim 7, the movement control unit and the direction control unit correspond to the reverse travel of the riding vehicle body (2), the position of the state detection member (73) is set to the vehicle width center position (P 2), The seedling transplanter according to any one of claims 2 to 6, characterized in that the sensing direction is switched to a planting device rear end direction (D2) in which the planting device (52) is in the rear end direction. It was.
When the aircraft is operated backward, the sensing member faces the rear side of the planting device and moves to the center in the left-right direction of the planting device, so that the operator can visually recognize the situation behind the aircraft without facing backwards. Can do.

According to the invention of claim 1, the movement control unit moves the state detection member to the corresponding seedling tank position along the movable support mechanism in response to the detection signal of the seedling amount decrease detection member, so that the state detection member becomes the seedling. It is configured to sense the supply state of the loaded seedling on the rear end side of the tank and operate the notification member over a predetermined holding time.
Therefore, it is not necessary for the operator to move from the maneuvering position and confirm the state of the rear part of the aircraft, and the single seed state sensing member indicates the supply state of the loaded seedling of the related seedling tank in the seedling tank of the multi-row transplanting part. Can be confirmed individually by the notification member, so that it is possible to concentrate on the maneuvering of the aircraft, improving work efficiency and improving seedling planting accuracy.
In addition to normal seedling reduction, for example, mat seedling up, mat seed tearing, seedling amount reduction detection switch failure, etc. can be confirmed at the cockpit by the notification member, so the operator can reduce seedling amount It is not necessary to check the transplanted part each time the detecting member detects, and the work efficiency is improved.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, when the seedling amount decrease detection member detects a decrease in seedling, the state detection member moves the seedling tank side over a predetermined time from the direction of the planting seedling. By adopting the facing configuration, the state after seedling planting and the placement state of the seedling on the seedling tank can be confirmed with a single state sensing member, so the number of parts is reduced.
In addition, when the predetermined time has elapsed, the state detection member rotates backward to detect the state after planting the seedling, so that the operator's operation procedure can be prevented from becoming complicated, and the operability is improved. .

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, it is possible to bring the state sensing member closer to the lower part of the seedling tank or the farm scene by providing the support of the movable support mechanism in the planting device. As a result, the detection accuracy of the seedling state is improved and the detection result becomes more accurate, so that it is possible to accurately determine whether the worker is in a normal working state.

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, the target position setting member at a location where the state sensing member needs to be sensed is limitedly validated, and this goal is achieved. By determining the movement position of the state detection member along the position setting member, the state detection member can be reliably moved to a required position, so that the state detection member does not stop at an irrelevant point and is detected. Therefore, the abnormality of the seedlings loaded in the seedling tank can be quickly corrected, so that the seedling planting accuracy is improved and the seedlings are prevented from being consumed unnecessarily.

According to the invention of claim 5, in addition to the effect of the invention of any one of claims 2 to 4, when a plurality of seedling amount decrease detection members are continuously detected, seedlings are seeded for a predetermined time in the order of detection. With the configuration that senses the state, the state of the seedlings at a plurality of locations can be sensed continuously, so that the state of the seedlings of the stripes can be accurately grasped, and the planting accuracy is improved. The number of seedlings that are wasted is reduced.

According to the invention of claim 6, in addition to the effect of the invention of any one of claims 1 to 5, the state sensing member is an imaging device, so that the operator can determine the state and placement of the seedling after planting. Since it is possible to visually determine the state of the seedling, the abnormality of the seedling can be quickly corrected, and the seedling planting accuracy is improved.

According to the invention of claim 7, in addition to the effect of the invention of any one of claims 2 to 6, when the aircraft is operated backward, the sensing member faces the rear side of the planting device, and the lateral direction of the transplanted part By moving to the center, the operator can see the surroundings of the planting device at the front end of the rearward movement while moving the aircraft backward, so that the planting device located at the rear end of the aircraft is at the end of the wall or field As a result, it is possible to prevent the airframe from being damaged by being in contact with the aircraft.
In addition, since the rear of the aircraft can be visually judged, the operation when loading the aircraft into a transport device such as a light truck can be performed easily and quickly, so that the work efficiency is improved and it is necessary to work while looking back frequently. Therefore, the labor of the operator is reduced.

Side view of rice transplanter Top view of rice transplanter Rear view of the transplant Side view of the main part of the transplant Enlarged view of back monitor device Side view of back monitor device Control flow chart of seedling tank winker Side view of the main part of the rear of the aircraft Enlarged plan view of drawing marker Enlarged view of lifting cable connecting part of drawing marker Top view of the main part of the wave barrier Block diagram of back monitor device Control flow chart of back monitor device

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
1 and 2 are a side view and a plan view of a six-row type rice transplanter, which is a configuration example of a riding seedling transplanter to which the present invention is applied. In this rice transplanter 1, the transplanting part 4 is mounted on the rear side of the traveling vehicle body 2 via the lifting link device 3 so as to be movable up and down, and the main body portion of the fertilizer device 5 is provided on the rear upper side of the traveling vehicle body 2. Based on the rice transplanter boarding operator, the forward and backward directions are referred to as front and rear, respectively, and the left and right directions toward the forward direction are referred to as left and right, respectively.

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 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 the belt transmission device 21 and the HST. 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 portion of the traveling vehicle body 2, and then transmitted to the transplanting unit 4 by the planting transmission shaft 26 and also transmitted to the fertilizer application device 5 by the fertilization transmission mechanism. The

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.

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. A connecting shaft 44 that is rotatably supported by the transplant portion 4 is inserted into and connected to the lower end portion of the vertical link 43, and the transplant portion 4 is connected to be rotatable about the connection 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 rotates up and down, and the transplant part 4 moves up and down while maintaining a substantially constant posture.

The transplanting 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 and for one horizontal row. When all the seedlings are supplied to the seedling outlet 51a, ..., seedling tank 51 for transferring seedlings downward by seedling feeding belt 51b, ..., planting the seedlings supplied to seedling outlet 51a, ... A planting device 52 provided with a reed 52a, and a pair of left and right drawing markers 92 for drawing the aircraft path in the next stroke to the topsoil surface. A center float 55 is provided at the center of the transplanted portion 4, 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 planting device 52,. Seedlings are planted. 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 field topsoil surface, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. 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 transplanting 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,. Guides (not shown), guided to the fertilizer guide, ... Grooves (not shown) provided on the front side of the fertilizer guide, ... are dropped into the fertilization structure formed near the side of the seedling planting strip. ing. 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 that is an example of a leveling device (a combination of the first rotor 27a and the second rotor 27b may be simply referred to as a rotor) is attached to the transplanting unit 4. In addition, the seedling tank 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 up-down direction that supports the entire transplant section 4 as a rail.

Further, a pair of preliminary seedling tanks 38 and 38 having a plurality of shelf plates 38a, 38b and 38c on which replenishment seedlings are placed are provided on the left and right sides of the front portion of the traveling vehicle body 2. Both the spare seedling tanks 38 and 38 are pivotally supported about the vertical axis, and are provided so as to be rotatable between a working position that protrudes laterally from the machine body and a storage position that suppresses outward protrusion.

In addition, the transplanting unit 4 is provided with a seedling amount decrease detecting member 71 for detecting a shortage of the remaining amount of seedlings in the vicinity of the rear end of the seedling tank 51 for each planting line, and issues a seedling replenishment warning via a notification device. A back monitor device 72 is provided for reflecting a state extending from the rear end portion of the seedling tank 51 to the rear of the planting device 52 after planting the seedling in the notification means.

(Back monitor)
As shown in FIGS. 3 and 4, the back monitor device 72 has a rear end of the seedling tank 51 from the upper position of the planting basket 52 a behind the seedling tank 51, respectively. A state detection member 73 such as a CCD camera that senses the supply state of the loaded seedling on the side and reflects it on the notification member, a movable support mechanism 74 that controls the movement of the state detection member 73 in the body width direction, and a state detection member 73 A control system (see FIG. 12) is configured by including a rotation support mechanism 75 that controls the rotation of the sensing direction angle, and control corresponding to the situation (see FIG. 13) is performed by the control unit C.

The state detection member 73 is configured by an imaging device that reflects the notification member as an image in a predetermined viewing angle range, so that the operator visually determines the state after planting the seedling and the state of the placed seedling. Therefore, the abnormality of the seedling can be corrected promptly, and the planting accuracy of the seedling is improved.

The movable support mechanism 74 is a column 81 attached to the transmission cases 50 and 50 of the planting devices 52 and 52 at both ends as shown in FIGS. , 81, a revolving chain mechanism 82 with a cover that supports the state detection member 73 between the both struts 81, 81 so as to be laterally movable within the required range A in the body width direction, and a sprocket at one end of the revolving chain mechanism 82 And an electric actuator 82a that drives and connects the two. The actuator 82a is disposed on the opposite side of the blower 58 of the fertilizer applicator 5 for the left-right balance of the machine body.

The movable support mechanism 74 configured in this way can bring the state detection member 73 closer to the lower part of the seedling tank 51 or the farm scene by providing the planting devices 52, 52 with the support columns 81, 81 of the movable support mechanism 74. Therefore, the detection accuracy of the seedling supply state is improved, and it becomes possible for the operator to accurately determine whether or not the working state is normal.

In the movement control, a proximity sensor 83 that detects the position of the state sensing member 73 that is moved by the circulating chain mechanism 82 is disposed at predetermined stop positions P1 to P3. Each of the positions P1 to P3 is divided in units of two strips in order from the side edge, for example, with the seedling tanks 51 and 51 for two strips as a unit, based on the distance and the sensing range that can ensure the sensing accuracy of the state sensing member 73. Set to the center position of each.

The rotation support mechanism 75 is configured to pivotally support the state detection member 73 with respect to the axis of the machine body width direction, and the rotation angle can be controlled by a potentiometer in a range from the rear end portion of the seedling tank 51 to the rear of the planting device 52. To do. The control position of the rotation angle sets a tank rear end direction D1, a planting device rear end direction D2, and a rear farm scene direction D3. That is, the tank rear end direction D1 is a direction in which the seedling supply state is sensed facing the rear end of the seedling tank 51, and the planting device rear end direction D2 is the most advanced position when the aircraft is retracted. The rear farming scene direction D3 is a direction for sensing the transplanting status of the seedlings in the rear farming scene, and the focal length of the state sensing member 73 is determined. Set accordingly.

The position / direction switching control of the state detection member 73 by the movable support mechanism 74 and the rotation support mechanism 75 in the planting operation is reflected in the notification means by setting the rear field scene direction D3 to the initial state at the machine body center position P2. The planting operation can be continued while confirming the planting status with the control unit.

In the planting operation, when the seedling amount decrease detection member 71 generates a detection signal, the movable support mechanism 74 holds the state detection member 73 at a predetermined holding time (for example, 3) at the seedling tank positions P1 to P3 corresponding to the detection signal. (Second), and the movement control is performed, and the rotation support mechanism 75 focuses the direction in the tank rear end direction D1, so that the seedling supply state of the seedling tank 51 is reflected in the notification means.

As described above, when the seedling amount decrease detection member 71 detects a decrease in seedling, the state detection member 73 is configured to face the seedling tank side only for a predetermined time from the direction of the planting seedling. Since the state after planting of the seedling and the placement state of the seedling can be confirmed, the number of parts is reduced.
In addition, when the predetermined time has elapsed, the state detection member 73 rotates in the rear farm scene direction D3 to detect the state after planting of the seedling, so that the operator's operation procedure can be prevented from becoming complicated, and the operability is improved. improves.

Accordingly, the operator can individually check the supply state of the loaded seedlings of the related seedling tanks in the seedling tanks of the multi-row transplanting unit 4 through the single state detection member and the notification member without requiring a backward confirmation operation. Therefore, it is possible to concentrate on maneuvering the aircraft, improving work efficiency and improving seedling planting accuracy.
In addition to the normal seedling reduction (mat seedling roll-up, mat seed tearing, seedling reduction detection switch failure, etc.), the operator can check the pilot seat at the cockpit, so the operator can reduce the seedling reduction. It is not necessary to check the seedling tank 51 each time the detection member 71 detects it, and the work efficiency is improved.

In this case, after the end of the predetermined holding time, the movement control unit and the direction control unit perform positioning and direction switching for the predetermined holding time corresponding to the first detection signal of another seedling amount decrease detection member 71 during that time. By performing, even when the seedling amount decrease detection member 71 of another seedling tank 51 overlaps and issues a detection signal, the seedling state can be sensed for a predetermined time in the order of detection, so a plurality of seedling amount decrease detection members It is possible to accurately grasp the state of each seedling when 71 is continuously detected.

In addition, the movement control unit is configured so that the target position setting member 83 for determining the movement position of the state detection member 73 can be switched from the non-operation state to the operation state by, for example, a solenoid, By arranging the seedling tank 51 at positions P1, P2 and P3 for sensing the state of the seedling tank 51 and controlling the seedling tank 51 corresponding to the detection signal of the seedling amount decrease detection member 71 to the operating state, the necessary target is obtained. Since the position setting member 83 is validated and the movement position of the state detection member 73 is determined along the target position setting member 83, the state detection member 73 moves to a necessary position with certainty. This prevents the abnormalities of the seedlings loaded in the seedling tank, and improves the planting accuracy of the seedlings.

In addition, the movement control unit and the direction control unit correspond to the reverse travel of the aircraft, the movement position of the state detection member 73 is the center position P2 in the left-right direction, and the detection direction of the state detection member 73 is the rear side of the planting device 52. By switching to, the sensing member 73 faces the rear side of the planting device 52 and moves to the center in the left-right direction of the transplanting unit when the aircraft is operated backward, so that the operator proceeds backward while moving the aircraft backward. Since the surroundings of the planting device 52 at the front end can be seen, the planting device 52 positioned at the rear end of the machine body is prevented from being damaged due to contact with the wall or the field edge when the machine body is stored.

(Seedling tank winker)
As shown in FIG. 2, the outer seedling tanks 51, 51 are provided with seedling tank blinkers 91, 91 at the outer ends, and in order to inform the assistant that the forgetting to return the saddle clutch, Control to light up in conjunction. For example, as shown in FIG. 7, the control flowchart of the seedling tank winkers 91 and 91, in the case where the hook clutch is operated, step 1 a of the control process for stopping the left two lines (hereinafter abbreviated as “S1 a”). Subsequently, the seedling tank left side blinker is turned on (S2a), and when the right two lines are stopped (S1b), the seedling tank right side blinker is turned on (S2b).

(Drawing marker)
As shown in FIGS. 8 and 9, respectively, the drawing marker 92 includes a side view of the main part of the rear part of the machine body and an enlarged plan view of the drawing marker 92. In addition to being connected to the portion 94a and the hydraulic cylinder outer receiving portion 94b, it is configured to be connected to the shaft support portion 95 of the drawing marker 92.

If an overload is applied to the drawing marker 92 during the dredging operation, the case outer receiving portion 94a and the hydraulic cylinder outer receiving portion 94b are deformed. As shown in FIG. 10 in an enlarged view of the connecting portion, the mounting pin portion 93a connected to the shaft support portion 95 of the drawing marker 92 is formed of a spring material.

This attachment pin portion 93a prevents the deformation of the case outer receiving portion 94a and the hydraulic cylinder outer receiving portion 94b because the attachment pin portion 93a extends when a drawing or higher load is applied by hooking the drawing marker 92. be able to. Further, with respect to the drawing marker 92 configured such that the cable 93 is loosened when the transplanted portion 4 is lowered by the lifting link device 3 and the cable 93 is lowered by the spring 96, a margin is provided in the cable 93, so The deformation of the case outer receiving portion 94a and the hydraulic cylinder outer receiving portion 94b can be prevented.

(Wave barrier)
As shown in FIG. 11, the wave breaker plate 97 is attached to a support shaft 97 a so as to change the angle of the traveling direction with a connected wire 98, and the wave breaker plate on the unplanted side of the seedling It is possible to prevent the seedling from falling down due to the water flow by allowing 97 to face outward and flowing water further outward on the side where there is no seedling.

DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Traveling vehicle body 3 Elevating / lowering link device 4 Transplanting portion 31 Seat 34 Handle 50 Transmission case 51 Seedling tank 51a Seedling outlet 51b Belt 52 Planting device 52a Planting basket 71 Seedling reduction detection member 72 Back monitor device 73 Status detection Member (CCD camera)
74 Movable support mechanism 75 Rotation support mechanism 81 Strut 82 Circumference chain mechanism 82a Actuator 83 Proximity sensor C Control unit D1 Tank rear end direction D2 Planting device rear end direction D3 Rear field scene direction P1, P2, P3 Stop position

Claims (7)

A riding traveling vehicle body (2) for traveling on a farm field and a transplanting portion (4) transplanted with a plurality of seedlings supported by raising and lowering the rear portion of the riding traveling vehicle body (2), the transplanting portion (4) A seedling tank (51) for feeding the loaded seedlings sequentially to the rear end side in a plurality of parallel arrangement configurations, and a planting device (52) for taking seedlings from each rear end of the seedling tank (51) and planting them in the field ), A seedling amount reduction detecting member (71) for detecting that the seedlings loaded in the seedling tank (51) have decreased below a certain amount, and work according to the detection signal of the seedling amount reduction detecting member (71) In a seedling transplanter provided with a notification member (72) for notifying a person,
A state sensing member (73) that senses the supply state of the loaded seedlings on the rear end side of the seedling tank (51) and reflects it on the notification member, supports the state sensing member (73), and supports each seedling tank (51 ) And a state of the state detection member at the position of the seedling tank corresponding to the detection signal of the seedling amount decrease detection member (71) by movement control of the movable support mechanism (74). A seedling transplanter comprising a movement control unit (C) for positioning (73) over a predetermined holding time. The state sensing member (73) is a seedling tank rear end direction (D1) for sensing a seedling supply state of the seedling tank (51) from a planting device rearward direction (D3) which is a direction for sensing a state after seedling planting. ) And the movement control unit (C) in the rear end direction (D1) of the seedling tank (51) at the position of the seedling tank corresponding to the detection signal of the seedling amount decrease detection member (71). The seedling transplanter according to claim 1, further comprising a direction control unit (C) that maintains correspondingly for a predetermined holding time. The movable support mechanism (74) moves the state detection member (73) between the left and right struts (81, 81) attached to the planting device (52) at both ends and the left and right struts (81, 81). The orbiting chain mechanism (82) that can be supported, and a drive actuator (82a) that is connected and driven at one of left and right ends of the orbiting chain mechanism (82). Item 2. A seedling transplanter according to Item 2. The movement control unit (C) is configured to be able to switch a target position setting member (83) for determining a movement position of the state sensing member (73) from a non-operation state to an operation state, and the target position setting member (83) Are placed at positions (P1, P2, P3) for detecting the state of each seedling tank (51), and the seedling tank (51) corresponding to the detection signal of the seedling amount decrease detection member (71) is switched to the operating state. The seedling transplanting machine according to any one of claims 1 to 3, wherein the seedling transplanting machine is configured to be controlled. When the predetermined holding time ends, the movement control unit (C) and the direction control unit (C) correspond to the first detection signal of another seedling amount decrease detection member (71) transmitted during the predetermined holding time. The seedling transplanter according to any one of claims 2 to 4, wherein the position and direction are maintained over a predetermined holding time. The seedling transplanter according to any one of claims 1 to 5, wherein the state sensing member (73) is configured by an imaging device that reflects the notification member (72) as an image in a predetermined viewing angle range. The movement control unit (C) and the direction control unit (C) correspond to the reverse travel of the riding vehicle body (2), the position of the state detection member (73) as the vehicle width center position (P2), and the detection direction. The seedling transplanter according to any one of claims 2 to 6, wherein the planting device (52) is switched to the rear end direction (D2) of the planting device (52).

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