JP6777138B2 - Rice transplanter - Google Patents

Description

The present invention relates to a seedling transplanter and belongs to the technical field of agricultural machinery.

Conventionally, a tray transport device for moving trays in which a plurality of seedlings are cultivated and a take-out device for taking out seedlings from the trays moved by the tray transport device with the left and right take-out claws are provided, and the take-out device holds and plants the seedlings taken out. It is known that when carried to the upper part of the tool, the extruded body of the seedling that moves between the left and right sides of the take-out claw spreads the tip side of the take-out claw in the left-right direction and moves the seedling to the planting tool. (See Patent Document 1).

In addition, the tray transport device moves the transport unit for loading the tray in the left-right direction, and when the seedlings for one row on the left and right are taken out from the tray, the tray is moved one row to the lower side in the transport direction. This movement is performed by moving the tray feed rod into and out of the front and rear space between the pot portions where the seedlings are vegetated on the back surface of the tray in a predetermined trajectory.

Specifically, when the seedlings for one row on the left and right are taken out from the tray, the tray feed rod pushes the tray downward from the back surface of the tray while pushing the tray downward in the transport direction, and when it moves for one row, the front and back of the subsequent pot portions The tray feed rod enters the space and restricts the movement of the tray.

JP 2015-159762

However, the seedling extruder of the conventional transplanter moves between the left and right sides of the take-out claw to push out the seedling, and in order to push out the seedling surely, the tip portion is shaped to pass above the left and right take-out claws. .. In addition, since the range of contact when extruding the seedlings is wide, there is a problem that the seedlings are damaged by the contact, poor growth occurs, and the planted seedlings die.

In addition, the seedling extruded body is formed by bending and cutting a metal plate, and is relatively heavy. Therefore, when moving the seedlings to push them out, if a suitable driving force is not secured, the seedlings will move. There is a problem that seedlings cannot be extruded at an appropriate timing due to delay, seedlings do not enter the planting tool, and there are places where seedlings cannot be planted.

An object of the present invention is to provide a transplanter capable of reliably moving a tray by one row in consideration of the problems of a conventional transplanter.

The invention of claim 1 is a transport device (100) for transporting a tray (20) on which a seedling (22) grows, and a seedling (22) from a tray (20) to which the transport device (100) is moved to a predetermined position. In the transplanting machine provided with the take-out device (200) for taking out the brake and the planting tool (11) for planting the seedlings (22) taken out by the take-out device (200) in the field, the transport device (100) is the tray (100). The tray feed rod (121) that moves the 20) at predetermined distances and regulates the movement of the tray (20) when the take-out device (200) takes out the seedlings, and the moving force of the tray (20). the attenuates a pair of brake arms which stops at a predetermined position (180L, 180R), switches the working state and the inoperative state of the brake arm in conjunction (180L, 180R) to the operation of the conveying device (100) brake Each of the interlocking arms (183L, 183R) is provided, and the width of the brake interlocking arms (183L, 183R) to weaken the damping action of the moving force of one brake arm (180L) to one interlocking regulating member (183L). A transplanting machine characterized in that a narrow portion (185L) is formed and a wide portion (185R) is formed on the other interlocking regulating member (183R) to weaken the damping action of the moving force of the other brake arm (180R). Is.

According to the second aspect of the present invention, the tray feed rod (121) is configured to move a predetermined trajectory in conjunction with the transport of the tray (20) of the transport device (100), and is located on the side of the tray feed rod (121). The transplanting machine according to claim 1, wherein a side plate (111a) is provided on the side of the side plate (111a), and a rail (121r) is formed on the side plate (111a) along the movement locus of the tray feed rod (121).

(Delete)

In the first related invention related to claims 1 to 3, the extruded member (281) is made of a wire rod, and the loop portion (281b) takes out one side end portion of the extruded member (281). The outer peripheral portion of the member (261L, 261R) in the lateral direction is formed so as to be wound, and the end portion of the winding portion of the loop portion (281b) is a seedling (22) of the take-out member (261L, 261R). It is a transplanter characterized in that it is located on a surface different from the holding action surface of.

A second related invention relating to claims 1 to 3 and the first related invention is an extrusion movement in which the extrusion member (281) is reciprocated along the longitudinal direction of the take-out member (261L, 261R). A member (283) is provided, a mounting shaft (282) is provided on the extrusion moving member (283), a base portion of the extrusion member (281) is provided on the mounting shaft (282), and a base portion of the extrusion member (281) is provided. Is a transplanting machine characterized in that a coil portion (281a) is formed by winding the mounting shaft (282) a plurality of times so as to surround the outer periphery thereof.

According to the invention of claim 1, by providing the separation protrusion (282a) on the mounting shaft (282), even if the left and right extruded members (281) move in the left-right direction along the mounting shaft (282), the left and right ones are one. It is possible to prevent the side extrusion member (281) from being caught by the left and right other side extrusion members (281), and prevent the left and right extrusion members (281) from sliding independently.

As a result, the extruder can slide smoothly, and the seedlings can be reliably moved to the planting tool.

Further, by attenuating the moving force of the tray (20) with the brake arms (180L, 180R), the tray (20) can be reliably stopped at the position where the extraction device (200) takes out the seedlings (22). , The extraction device (200) is prevented from failing to remove the seedling (22) from the tray (20), and the seedling is surely planted in the field. As a result, the worker does not need to plant the seedling in the place where the seedling was not planted, and the labor of the worker is reduced.

Further, the one brake interlock arm (183L) to form a narrow portion (185L), by forming the wide portions (185R) to the other brake interlock arm (183R), take-out device (200) seedlings ( Since it is possible to prevent the tray (20) from stopping moving on the upper side in the moving direction than the position where the 22) is taken out, it is possible to prevent the take-out device (200) from failing to take out the seedling (22) from the tray (20). , Seedlings are reliably planted in the field. As a result, the work of the worker planting the seedling does not occur in the place where the seedling was not planted, and the labor of the worker is reduced.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the tray feed rod (121) becomes a tray by forming a rail (121r) along the movement locus of the tray feed rod (121) on the side plate. Since it is possible to prevent the tray (20) from moving at a position deviating from the optimum movement locus, the tray (20) can be moved to a position where the seedling (22) is taken out.

(Delete)

According to the first related invention, in addition to the effects of the inventions of claims 1 to 3, the weight of the extruded member (281) can be reduced by forming the extruded member (281) with a wire rod. The extrusion member (281) can be smoothly moved, and the seedlings can be moved to the planting tool (11) at an appropriate timing, so that the seedling planting accuracy is improved.

Further, since the end of the winding portion of the loop portion (281b) is located on a surface different from the holding action surface of the seedling (22) of the take-out member (261L, 261R), the end of the extrusion member (281) The sharp portion does not come into contact with the seedling (22), damage to the seedling is prevented, and the growth of the seedling is stabilized.

According to the second related invention, in addition to the effects of claims 1 to 3 and the first related invention, the base of the extruded member (281) to be mounted on the mounting shaft (282) of the extruded moving member (283). By forming the coil portion (281a), when the loop portion (281b) moves along the longitudinal direction of the take-out member (261L, 261R), the amount of movement of the extrusion member (281) on the base side in the left-right direction is suppressed. Therefore, the change in the mounting position of the extrusion member (281) is prevented, the operation of the extraction member (261L, 261R) is not hindered, and the seedling (22) is reliably taken out from the tray (20) and planted. It can be moved to the tool (11).

Left side view of rice transplanter Plan view of rice transplanter (A) A schematic cross-sectional view of the central part of the planting tool cut in a plane parallel to the front-rear direction of the machine body and perpendicular to the ground, as seen from the left side, (b) the central part of the planting tool in the left-right direction of the machine body. Schematic cross-sectional view of what was cut in a plane parallel to and perpendicular to the ground seen from the back side, (c) perspective view of the rear guard arranged along the inner rear surface of the planting tool as seen from the left rear side. (A) perspective view of the tray transport device, (b) enlarged perspective view of the main part of the tray transport device. Schematic side view showing the configuration of the tray vertical feed device (A) Schematic perspective view showing the moving device of the extraction device, (b) Plan view of the main part showing the extraction device and the extrusion device. (A) A perspective view of a main part showing the arrangement of the take-out claw and the extrusion rod, (b) a plan view of the main part showing the arrangement of the take-out claw and the extrusion rod, and (c) a front view of the main part showing the loop part of the extrusion rod. Schematic side view of the take-out device when the lower right front side is viewed from the upper left back side of FIG. 6 (a). Schematic diagram showing a schematic correspondence between the rotation position of the seedling drive arm and the position on the locus of the tips of the pair of extraction claws in the extraction device. Right side view of the tray carrier showing the right brake arm Left side view of the tray carrier showing the left brake arm Enlarged side view of the main part showing the rod rail of the tray feed rod Side view showing a water pump Top view showing the water pump An exploded view of the valve plate of the water pump

Hereinafter, the seedling transplanter of the present invention will be described. FIG. 1 shows a schematic left side view of the rice transplanter 1 of the present embodiment, and FIG. 2 shows a schematic plan view.

As shown in FIGS. 1, 2 and 4, the seedling transplanter 1 for transplanting seedlings such as vegetables is a traveling vehicle body 15 having a pair of left and right front wheels 2 and rear wheels 3 as traveling wheels, and a traveling vehicle body 15 of the traveling vehicle body 15. The engine 12 and the mission case (main transmission case) 4 arranged at the front part, and the seedling planting device 300 arranged at the rear part of the traveling vehicle body 15 for swinging the planting tool 11 up and down to plant the seedlings 22 in the field. The seedling transfer device 100 for supplying the tray 20 containing the seedlings 22 and the seedling raising member 260 are inserted into the seedling raising pot 21 of the tray 20 of the tray transfer device 100 to take out the seedlings 22 and the planting tool 11. A planting depth adjusting mechanism including a take-out device 200 for supplying to the seedling 22 and a sensor plate for keeping the planting depth of the seedling 22 constant, and a suppression wheel 13, a control handle 8, and a central portion of the control handle 8. It is configured to include an operation unit 800 and the like.

Further, as shown in FIGS. 1 and 2, the rotational power output from the engine 12 is branched by the mission case 4, and is transmitted to the pair of left and right rear wheels 3 via the pair of left and right traveling transmission cases 60, and the mission. It is also transmitted to the planting transmission device 18 provided on the rear side of the case 4.

That is, in the seedling transplanter 1, the power from the mission case 4 is transmitted to the planting transmission device 18 and taken out via the chain belt 202 in order to take out the seedlings 22 from the seedling raising pot 21 and plant them in the ridges of the field. Along with being transmitted to the device 200, it is transmitted to the planting tool 11 via the seedling planting device drive mechanism 400 attached to the planting transmission device 18 and the seedling planting device 300. The planting operation of the rice transplanter 1 is performed intermittently by the seedling planting device drive mechanism 400.

Further, as shown in FIG. 2, the tray transport device 100 is provided with a tray detection device 1100 that detects the presence or absence of the tray 20 on the tray transport path 111. In the feeding operation of the tray transporting device 100, the seedling stand 110 is intermittently fed in the left-right lateral direction so that the seedlings in the seedling raising pot 21 for one row in the horizontal direction of the tray 20 are sequentially taken out by the take-out member 260. After the operation and the removal of the seedlings of all the seedling raising pots 21 in the horizontal direction are completed, the tray 20 on the seedling stand 110 is fed downward by the tray feed rod 121 for the horizontal row of the seedling raising pots 21. There is a feed operation.

In the vertical feed by the tray feed rod 121, the tip portion of the tray feed rod 121 is engaged with the groove between the adjacent seedling raising pots 21 on the back surface side of the tray 20, and in this state, the tray feed rod 121 is substantially sideways. By rotating while drawing a quadrangular locus A (see FIG. 5), the tray 20 is intermittently vertically fed diagonally downward along the tray transport path 111.

Further, as shown in FIGS. 1 and 2, a main frame 17 extending to a right position is provided at the rear portion of the left and right frames 16 arranged in the left-right direction at the rear end of the mission case 4. A steering handle 8 extending rearward from the left and right end sides is provided at the rear end of the main frame 17, and the steering handle 8 is supported by the mission case 4 via the main frame 17 and the left and right frames 16. There is.

As a result, the operator can steer the traveling vehicle body 15 by using the steering wheel 8 while walking behind the traveling vehicle body 15.

That is, the seedling transplanter 1 advances the traveling vehicle body 15 while straddling the ridges U by the left and right front wheels 2, 2 and the left and right rear wheels 3, 3, and ridges 22 the seedlings 22 housed in the tray 20. It is a configuration that is automatically planted on the upper surface of the.

Further, the traveling unit is provided with an airframe control mechanism 50 that controls the posture and height of the traveling vehicle body 15 by moving the left and right rear wheels 3 and 3 up and down with respect to the traveling vehicle body 15. The machine body control mechanism 50 tilts the hydraulic elevating cylinder 10 that raises and lowers the traveling vehicle body 15 by the vertical movement of the rear wheels 3 and the traveling vehicle body 15 to the left and right between the traveling transmission case 60 of the rear wheels 3 and the traveling vehicle body 15. A horizontal hydraulic cylinder 14 is provided, and when the hydraulic elevating cylinder 10 is expanded and contracted, the left and right rear wheels 3 move up and down with respect to the traveling vehicle body 15 in the same direction by the same amount, and the traveling vehicle body 15 moves up and down. ..

As shown in FIGS. 1 and 2, the mission output shaft 4a that outputs the driving force to the left and right rear wheels 3 protrudes toward the left and right outside of the mission case 4. Further, the input shaft 61 of the traveling transmission case 60 is connected to the transmission output shaft 4a by spline coupling. Further, swing arms 63a extending in the direction orthogonal to the input shaft 61 are fixed to the upper surface side of the outer periphery of the left and right rotating outer cylinder portions 63 protruding from the traveling transmission case 60 toward the transmission case 4 (FIG. 1). , See FIG. 2). Then, the traveling transmission case 60 is rotatably connected to the mission case 4 via the left and right rotating outer cylinder portions 63 about the input shaft 61.

A rod connecting plate 9 is attached to the tip of the piston rod of the hydraulic elevating cylinder 10, and the left and right ends of the rod connecting plate 9 and the left and right swing arms 63a are connected via the connecting rod 9a. ing. A horizontal hydraulic cylinder 14 is provided between the left connecting rod 9a and the swing arm 63a.

Further, the hydraulic elevating cylinder 10 is fixed to the hydraulic switching valve portion 40 (see FIG. 1) provided in the upper part of the mission case 4, and is provided in the switching valve portion 40 for switching the oil supply from the hydraulic pump provided in the mission case 4. In addition, it is configured to operate by operating an elevating operation valve (not shown).

Further, a pendulum type left / right tilt sensor 41 is provided on the right side of the mission case 4, and the horizontal hydraulic cylinder 14 is operated via a horizontal operation valve (not shown) provided in the switching valve portion 40 by detecting the left / right tilt sensor 41. Only the rear wheel 3 on the left side is moved up and down to maintain the traveling vehicle body 15 horizontally regardless of the unevenness of the valley portion of the ridge U.

Here, the planting tool 11 will be described with reference to FIGS. 3 (a) to 3 (c). As shown in FIGS. 3 (a) and 3 (b), the planting tool 11 temporarily holds the seedlings and plants them in the field, the left hopper portion 1011L and the right hopper portion 1011R, and the left hopper portion 1011L and the right hopper. The left hopper holder 1012L and the right hopper holder 1012R, and the left hopper holder 1012L and the right are connected to each other so as to hold the upper end portion of the portion 1011R and to open and close the tip side of the left hopper portion 1011L and the right hopper portion 1011R. One end and the other end are fixed to the holder holding frame 1013 that rotatably holds the hopper holder 1012R around the fulcrum shaft 1013a, and the front lower end of the left hopper holder 1012L and the right hopper holder 1012R, and the left hopper 1011L and the left hopper holder 1011L. The hopper pulling spring 1014 that constantly urges the compressive force in the closing direction of the right hopper portion 1011R is fixed to the front upper end portion of the left hopper holder 1012L and the right hopper holder 1012R, and the other end portion 352 of the opening / closing connecting cable 350 is connected. It is provided with a pair of left and right opening / closing arms 1015L and 1015R.

Here, the connecting portion 1012La of the left hopper holder 1012L and the connecting portion 1012Ra of the right hopper holder 1012R have a gear shape, and the gear shapes are half-toothed in the front-rear direction, and the gears can be assembled to the left and right so as to face each other. It is a configuration that meshes with each other. Specifically, when the right opening / closing arm 1015R to which the other end 352 of the opening / closing connecting cable 350 connected fixed to the right hopper holder 1012R is connected is pulled by the opening / closing connecting cable 350, the right hopper holder 1012R The connecting portion 1012Ra of the above rotates around the fulcrum shaft 1013a in the direction in which the right hopper portion 1011R opens. At the same time, by engaging the gear with the connecting portion 1012Ra of the right hopper holder 1012R, the connecting portion 1012La of the left hopper holder 1012L rotates in conjunction with each other, so that the left hopper portion 1011L rotates at the same time in the opening direction.

Further, the left and right hopper portions 1011L and 1011R have a substantially cylindrical shape in which the lower end portion is beak-shaped and the upper end portion is open in the closed state. Then, at the front and rear end face portions where the left hopper portion 1011L and the right hopper portion 1011R are butted against each other, a substantially V-shaped front V-shaped notch 1200F in front view and a substantially V-shaped front view. A rear V-shaped notch 1200B is provided.

By providing the front V-shaped notch portion 1200F and the rear V-shaped notch portion 1200B, when the planting tool 11 is closed, the contact portion between the mating surfaces of the left hopper portion 1011L and the right hopper portion 1011R becomes smaller. The noise generated by hitting the mating surfaces can be reduced.

Further, the planting tool 11 of the present embodiment includes a front guard 1210F that covers the front V-shaped notch 1200F from the inside and a rear guard 1210B that covers the rear V-shaped notch 1200B from the inside. In the front guard 1210F, the upper end portion 1210F is fixed to the front rising portion 1013F of the holder holding frame 1013, and the upper end portion 1210F is fixed from there in a side view (see FIG. 3A), diagonally downward toward the inner center of the planting tool 11. The extended flat plate portion is configured to substantially cover the front V-shaped notch portion 1200F in a rear view (see FIG. 3B).

Further, in the rear guard 1210B, the left upper end portion 1210BL and the right upper end portion 1210BR are fixed to the rear end side of the left side frame portion 1013L and the rear end side of the right side frame portion 1013R of the holder holding frame 1013, and from there, side view ( (See FIG. 3A), a flat plate portion extending diagonally downward toward the inner center of the planting tool 11 is configured to substantially cover the rear V-shaped notch portion 1200B in the same manner as the front guard 1210F.

Further, the upper end edge portion 1210BU of the flat plate portion of the rear guard 1210B (see FIG. 3C) is fixed to the holder holding frame 1013, and the rear upper end edge portion 1011BU of the pair of left and right hopper portions (see FIG. 3 (c)). It is configured to have the same height as a)). That is, the upper end edge portion 1210BU of the rear guard 1210B is configured to be lower than the heights of the left and right upper end portions 1210BL and 1210BR of the rear guard 1210B in rear view. The front guard 1210F and the rear guard 1210B are elastic resin or rubber plate-shaped members.

By providing the front guard 1210F and the rear guard 1210B, when the extraction device 200 supplies the seedling 22 to the planting tool 11, the seedling 22 is planted from the front V-shaped notch 1200F and the rear V-shaped notch 1200B. It is possible to prevent the seedlings 22 from being dropped to the outside of the attachment 11 or being caught in the front V-shaped notch 1200F or the rear V-shaped notch 1200B, and the transplanting accuracy of the seedlings is improved.

Further, in order to make the upper end edge portion 1210BU of the rear guard 1210B the same height as or lower than the rear upper end edge portion 1011BU (see FIG. 3A) of the pair of left and right hopper portions, the upper end edge portion The height of the 1210BU is set to be lower than the heights of the left and right upper ends 1210BL and 1210BR of the rear guard 1210B in the rear view, so that the seedlings 200 when the seedlings 22 are supplied to the planting tool 11 It is possible to prevent a part of the 22 from coming into contact with the upper end edge 1210BU of the rear guard 1210B, and the seedling 22 can be accurately supplied into the hopper without being damaged.

Next, the tray transfer device 100 described above will be further described mainly with reference to FIGS. 4 (a) and 4 (b) and FIG. The tray 20 is a series of a plurality of seedling raising pots 21 arranged vertically and horizontally, and is made of plastic so as to maintain flexibility. Each seedling raising pot 21 is connected on the front side, and the back side has an independent form.

The tray transport device 100 includes a seedling stand 110 having a tray transport path 111 that supports the bottom of the tray 20 and is inclined forward, and a tray vertical feed device that intermittently feeds the tray 20 in the vertical direction along the tray transport path 111. The tray transport path moving device 170 (see FIG. 2) for moving the seedling stand 110 having the tray transport path 111 in the left-right direction is provided.

Further, as described above, the tray transport device 100 is provided with a tray detection device 1100 for detecting that the tray 20 is not placed on the tray transport path 111.

As shown in FIGS. 2 and 5, the tray detection device 1100 is arranged on the outer surfaces of the tray detection member 1110 rotatably arranged at the substantially central portion of the tray transport path 111 and the left and right sides of the seedling stand 110, respectively. The left and right interlocking arms 1120L and 1120R that rotate in conjunction with the rotation of the tray detection member 1110, the connecting shaft 1130 that connects the tray detection member 1110 and the left and right interlocking arms 1120L and 1120R, and the tray transport path movement. On the inner side surfaces of the left and right side portions 172L and 172R of the device 170, there are a pair of left and right limiter switches 1140L and 1140R arranged at positions corresponding to the left and right interlocking arms 1120L and 1120R, respectively. The signal lines (not shown) of the left and right limiter switches 1140L and 114R are connected to a control device (not shown).

When the tray 20 is not supplied on the tray transport path 111, or when the rear end of the tray 20 passes the position of the tray detection member 1110, the tray detection member 1110 is a spring member (not shown). The restoring force of (omitted) projects toward the front side from the substantially central portion of the tray transport path 111, but when the tray 20 is supplied on the tray transport path 111, the back surface of the tray 20 is the spring member. Since the tray detection member 1110 is pressed by a force that opposes the restoring force, the tray detection member 1110 rotates counterclockwise when viewed from the left side.

As a result, the tray detection member 1110 rotates clockwise or counterclockwise according to the presence or absence of the tray 20, and in conjunction with this, the pair of left and right interlocking arms 1120L and 1120R rotate.

In a state where the tray 20 does not exist in the central portion on the tray transport path 111, the tray detection member 1110 rotates clockwise from the opening in the substantially central portion of the tray transport path 111 toward the front side in the left side view. The pair of left and right interlocking arms 1120L and 1120R rotate clockwise in conjunction with this and stop at a predetermined position. Then, when the seedling stand 110 is laterally fed and reaches the inner side surface of any of the left and right side portions 172L and 172R of the tray transport path moving device 170, the pair of left and right interlocking arms 1120L or 1120R causes the pair of left and right limiter switches 1140L. Alternatively, it hits the movable portion 1141L or 1141R of the 1140R, whereby a signal indicating that the tray 20 does not exist in the substantially central portion on the tray transport path 111 is sent to the control device. The control device that receives the signal sounds an alarm buzzer (not shown).

The alarm buzzer sounds for a certain period of time (several seconds) after the movable parts 1141L or 1141R of the pair of left and right limiter switches 1140L or 1140R are pressed, and then the alarm sound of the alarm buzzer is automatically stopped.

Further, the fixed time is set to be equal to or longer than the time when the seedling stand 110 moves from end to end, and each time the movable portion 1141L or 1141R of the pair of left and right limiter switches 1140L or 1140R is pressed, the fixed time is counted. Is reset and receives a signal from the newly pressed limiter switch 1140L or 1140R to newly start counting for a certain period of time, so that the alarm sound is stopped until the tray 20 is supplied. It can be configured to sound continuously without any problem.

As described above, since the pair of left and right limiter switches 1140L and 1140R are attached to the left and right side portions 172L and 172R of the tray transport path moving device 170 which is a fixed portion that does not move left and right, the pair of left and right limiter switches 1140L and 1140R The signal wiring (not shown) extending from the can be securely fixed, and disconnection can be prevented. Further, since the alarm buzzer automatically stops when the alarm sound is emitted for a certain period of time, it is not necessary to provide a stop switch.

In the above embodiment, the configuration in which the alarm buzzer sounds for a certain period of time has been described, but the present invention is not limited to this. For example, when the tray detection device 1100 detects the absence of the tray 20, it is linked with the solenoid 1440 to form a horizontal row of the tray 20. The alarm buzzer may sound 10 times, for example, according to the number of seedling raising pots 21 arranged in the above.

Further, when the tray detection device 1100 detects the absence of the tray 20 twice in succession, the alarm buzzer may be sounded continuously for several seconds, or the solenoid may be used every time the absence of the tray 20 is detected. In conjunction with 1440, the alarm buzzer may sound for a longer length.

According to the above configuration, since the remaining amount of seedlings can be known by the sound of the alarm buzzer, the tray 20 can be replaced with a margin.

Further, according to the above configuration, the alarm is activated every time the intermittent planting operation is linked to the operation of the solenoid 1440, so that the degree of reduction of seedlings and the degree of remaining amount of seedlings can be determined.

Here, the description of the tray vertical feed device 120 of the tray transfer device 100 is returned to again. The tray vertical feed device 120 enters between the seedling raising pots 21 protruding from the back surface side of the tray 20 and moves downward to feed the tray 20 by one horizontal row of the seedling raising pots 21. The tray feed rod 121 has a structure that allows the seedling raising pots 21 to escape from each other and move upward by one horizontal row of the seedling raising pots 21.

The tray feed rod 121 is configured so that the central portion 121a can enter and exit the evacuation groove 111a provided in the lower part of the tray transport path 111, and both end portions 121b are bent at right angles to the outside of both sides of the tray transport path 111. It is located in the tray 20 and does not interfere with the movement of the tray 20 on the tray transport path 111.

Further, the tray transport device 100 includes a pair of left and right rod guide plates 112 for restricting the movement of the tray feed rod 121 at the end face portions on both sides of the tray transport path 111 on the downstream side of the evacuation groove 111a. There is. At the upper end edge of the rod guide plate 112, notches 112a are formed at both ends of the central portion 121a of the tray feed rod 121 so that the protrusions 121ab protruding downstream can enter (FIG. 5B). reference).

That is, the cutout portion 112a is temporarily formed in the central portion 121a of the tray feed rod 121 until the central portion 121a of the tray feed rod 121 moves downward and then comes out from between the seedling raising pots 21. The structure is such that the protrusions 121ab at both ends are held and the tray 20 is restricted from moving downward due to the weight of the seedlings 22 placed in the seedling raising pot 21. The locus of the central portion 121a of the tray feed rod 121 will be described later with reference to FIG.

Further, the tray transport path moving device 170 is provided on the back surface side of the tray transport path 111, and obtains a driving force from the main body side of the seedling transplanter 1 to move the seedling stand 110 having the tray transport path 111 in the left-right direction. The lead cam shaft 171 and the guide rail 155 provided above the lead cam shaft 171 to guide the movement of the seedling stand 110 having the tray transport path 111 in the left-right direction, and the left and right side portions 172L for holding the guide rail 155 on both the left and right sides. , 172R.

Further, the tray transport path 111 is supported by a lead cam shaft 171 and a guide rail 155 provided on the inner upper portion of the tray transport path 111 to guide left-right movement. As a result, since the guide rail 155 supports the tray transport path 111 at a position away from the lead cam shaft 171, there is little rattling when moving in the left-right direction. When the tray 20 is inserted from above the seedling stand 110 so as to be sandwiched between the tray transport path 111 and the holding frame 25, the tip of the tray feed rod 121 is engaged with the groove on the back surface side of the tray 20. In this state, the tray feed rod 121 rotates while drawing a substantially quadrangular locus A in a side view, so that the tray 20 is intermittently vertically fed diagonally downward along the tray transport path 111.

The mechanism for intermittently feeding the tray 20 vertically using the tray feed rod 121 will be described later.

Further, in the present embodiment, the tray 20 is sequentially vertically fed diagonally downward along the tray transport path 111, and after all the seedlings 22 are taken out by the take-out member 260, the tray 20 passes under the tray vertical feed device 120 and finally. The configuration is such that the vehicle passes above the operation unit 800 and is discharged in the direction of the control handle 8 (see the discharge path 20t in FIG. 1), and this point will be described.

That is, as shown in FIGS. 1 and 2, the main clutch lever 900 is arranged at the end of the discharge path 20t from which the tray 20 is discharged, and when the main clutch lever 900 is operated forward, the main clutch is “on”. When the clutch is operated to the rear side (see arrow 900B in FIG. 1), the main clutch is in the "disengaged" state.

The tray 20 ejected in the direction of the control handle 8 is usually removed by the operator, but even if the operator neglects to remove the ejected tray 20, in the present embodiment, the tray 20 is ejected. When the main clutch lever 900 is pushed backward by the tip of the tray 20 (see arrow 900B in FIG. 1), it is in the "off" state, and for safety, the planting work is automatically stopped. is there.

By the way, the take-out device 200 is arranged at a position facing the lower end of the seedling stand 110, and the tip of the take-out member 260 operates so as to draw a locus K, and the seedling raising pot 21 moves in the lateral direction in order. , The seedling 22 is taken out and supplied to the planting tool 11.

Next, the configuration of the take-out device 200 provided in the rice transplanter 1 of the present embodiment will be mainly described with reference to FIGS. 6 to 9. The take-out device 200 is rotatably held by a take-out device fixing member 201 fixed to the main body of the seedling transplanting machine 1, and rotates in the direction of arrow B by the power of a drive source on the main body side via a chain belt 202. A drive arm 220 that rotates in the same direction by the drive shaft 203, a connecting arm 230 whose one end 230a is rotatably connected to the tip side 220a of the drive arm 220, and a fixing pin to the take-out device fixing member 201. A guide that is held by 201a and 201b and has an outer shape of the letter J in the alphabet, and has a linear shape on the side close to the tray transfer device 100 and a shape that rises in a substantially R shape on the far side. A guide portion 240 having a groove 241 is provided.

Further, the take-out device 200 has a first guided member 245 integrated with a cam shaft 271, which will be described later, and a second cover, which are inserted into the guide groove 241 so as to be smoothly slidable without rattling. The guide member 247 is connected, and the substrate 250 having the bent portion 251 protruding from one end side of the side surface to which the guided member is connected and bent at a substantially right angle, and the substrate 250 projecting vertically from the bent portion 251 of the substrate 250. A pair of left and right take-out claw holding pins 252L and 252R that are rotatably held, and a root part is attached to a pair of left and right take-out claw holding pins 252L and 252R, respectively, and the width of the tip part is narrowed like tweezers. A take-out member 260 having a pair of take-out claws 261L and 261R for taking out the seedlings 22 in the pot 21 and a pull spring 263 having both ends attached to the root side of the opposite inner surface portions of the pair of take-out claws 261L and 261R. , Is equipped.

Further, the extraction device 200 is a cam 270 having a cam shaft 271 integrally with the first guided member 254 that rotatably penetrates the substrate 250, and the thickness of the outer peripheral portion of the cam 270. The outer peripheral portion 272 whose thickness changes depending on the location of the outer peripheral portion when it comes into contact with the tip surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R provided on the inner surface portions of the pair of take-out claws 261L and 261R. And a cam provided with an outermost edge portion 273 whose outer diameter changes depending on the location of the outermost edge portion with respect to the distance (also referred to as the outer diameter) of the outermost edge portion of the cam 270 from the axis center of the camshaft 271. The pair of extraction claws 261L, which are rotatably connected to the 270 and the substrate 250 and are taken out from the seedling raising pot 21 along the pair of extraction claws 261L and 261R due to the change in the outer diameter of the outermost edge portion 273 of the cam 270. It is provided with an extrusion mechanism 280 having an extrusion rod 281 that extrudes the seedling 22 held by 261R.

One of the features of the extraction device 200 is that after the extraction member 260 takes out the seedlings 22 in the seedling raising pot 21, the extrusion rod 281 moves slightly in the direction of pushing out the seedlings 22, and then the extrusion rod 281 removes the seedlings 22. The point is that the extrusion rod 281 is configured to move further in the direction of pushing out the seedling 22 when it is supplied to the planting tool 11. As a result, the extrusion rod 281 can be brought into contact with the floor of the seedling 22, so that the seedling 22 can be stably held by the extraction member 260 and the extrusion rod 281, and the planting accuracy can be improved.

The take-out member 260 of the present embodiment corresponds to an example of the take-out tool of the present invention, and the extrusion rod 281 of the present embodiment corresponds to an example of the extruder of the present invention.

Further, the edge portion 245a near the tip of the first guided member 245, which is integrated with the cam shaft 271, is rotatably connected to the other end portion 230b of the connecting arm 230. Further, the first guided member 245, which is integrated with the cam shaft 271, is driven by the rotational force of the drive arm 220 via a transmission mechanism 290 composed of the first gear 291 and the second gear 292 and the third gear 293. It is rotated and transmits the driving force to the cam shaft 271 according to the driving cycle of the driving arm 220.

Further, when the outer peripheral portion 272 of the cam 270 comes into contact with the tip surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R provided on the inner surface side of the pair of take-out claws 261L and 261R, the outer peripheral portion 272 of the cam 270 The pair of take-out claws 261L and 261R are opened and closed by the interaction between the change in thickness and the restoring force of the tension spring 263.

Next, the transmission mechanism 290 will be further described. That is, the first gear 291 is fixed to the tip side portion 220a of the drive arm 220, and is rotatably attached to the connecting arm 230 via the first rotation shaft 291a. Further, the third gear 293 is fixed to the tip portion 245b of the first guided member 245, which is integrated with the cam shaft 271, and the edge portion 245a near the tip of the first guided member 245 is the connecting arm 230. Since it is rotatably connected to the other end 230b of the third gear 293, the third gear 293 is rotatably held with respect to the connecting arm 230. Therefore, the third gear 293 rotates integrally with the first guided member 245. Further, the second gear 292 is rotatably attached at the central position of the connecting arm 230, is sandwiched between both the first gear 291 and the third gear 293, and is fitted to both gears.

Next, the extrusion mechanism 280 will be further described with reference to FIGS. 6 to 9. The extrusion mechanism 280 is a member that pushes out the seedlings 22 held by the left and right extraction claws 261L and 261R by sliding the left and right extrusion rods 281, 281 along the pair of extraction claws 261L and 261R. The bases of the left and right extrusion rods 281,281 are provided on the mounting shafts 282 provided on the extrusion arm 283 that rotates in the front-rear direction by the rotation of the cam 270, and the ends of the left and right extrusion rods 281,281 are left and right. Bring it to the vicinity of the front end of the take-out claws 261L and 261R.

The left and right extruded rods 281,281 are processed by bending an elongated wire rod having a certain degree of hardness and flexibility, and the base side is wound a plurality of times along the columnar mounting shaft 282 to form a coil portion 281a. Each of the 281a is formed, and the end side forms at least one loop around the left and right take-out claws 261L and 261R, that is, loop portions 281b and 281b surrounding the left and right take-out claws 261L and 261R, respectively. ..

Further, the left and right extrusion rods 281, 281 pass above the left and right take-out claws 261L and 261R in a posture in which the left and right width on the base side to be mounted on the mounting shaft 282 is narrower than the left and right width on the end side. Arrangement to be done.

The loop portions 281b and 281b are bent downward on the outside of the left and right take-out claws 261L and 261R near the ends of the left and right extrusion rods 281,281, and are inward below the left and right take-out claws 261L and 261R. Bend towards. Then, the left and right take-out claws 261L and 261R are bent inward and upward, the left and right take-out claws 261L and 261R are bent outward, and the left and right take-out claws 261L and 261R are bent outward and downward. It is configured by bending it toward it. The bent portion shall be formed by a bending method having an R shape.

Further, in the left and right center portions of the mounting shaft 282, separation protrusions 282a for preventing the coil portions 281a and 281a of the left and right extrusion rods 281,281 from coming into contact with each other are provided, and the base side of the left and right extrusion rods 281,281 is provided. Prevents the left-right spacing from becoming too narrow.

Then, the first holding protrusion 283c is provided on the lower side of the extrusion arm 283 and above the extrusion arm connecting shaft 283d, and the second holding protrusion 250a is provided on the substrate 250, and the first holding protrusion 283c and the first holding protrusion 283c are provided. 2 A tension spring 284 is provided over the holding protrusion 250a.

When the cam 270 rotates in the direction of arrow B, the maximum protruding portion 273b having the portion having the largest outer diameter in the outermost edge portion 273 comes into contact with the outer peripheral edge portion of the root portion of the first holding protrusion 283c. , The tension spring 284 is stretched, the extrusion arm 283 rotates counterclockwise in the figure (see arrow C), and the extrusion rod 281 connected to the mounting shaft 282 retracts.

Further, when the cam 270 further rotates in the direction of arrow B, the outer diameter is smaller than the maximum diameter of the maximum protruding portion 273b among the outermost edge portions 273, and the outer diameter is the smallest among the outermost edge portions 273. The contact position 273c1 (see the figure) in the intermediate protrusion 273c having an outer diameter larger than that of the minimum protrusion 273a is configured to contact the outer peripheral edge portion of the root portion of the first holding protrusion 283c.

At this time, the tension spring 284 that had been stretched until then contracts a little, and the extrusion arm 283 rotates clockwise in the figure (see arrow D), and the left and right extrusion rods 281 connected by the mounting shaft 282. , 281 project slightly, and the loop portions 281b and 281b come into contact with the seedling 22.

Further, when the cam 270 further rotates in the direction of arrow B, the extrusion position 273a1 at the minimum protruding portion 273a having the smallest outer diameter among the outermost edge portions 273 comes into contact with the outer peripheral edge portion of the root portion of the first holding protrusion 283c. It is a configuration to do.

As a result, the tension spring 284 is further contracted, the extrusion arm 283 is swung clockwise in FIG. 8 (see arrow D), the left and right extrusion rods 281,281 are further projected, and the loop portions 281b and 281b are seedlings. The configuration is such that 22 is completely discharged to the planting tool 11 side.

When the left and right extrusion rods 281,281 project and the seedlings 22 are discharged to the planting tool 11 and then retracted, the left and right loop portions 281b and 281b advance and retreat along the outer peripheral portions of the pair of extraction claws 261L and 261R. Therefore, impurities such as soil adhering to the pair of take-out claws 261L and 261R are removed. The contaminants are soil around the roots of the seedlings 22, shredded fine roots, and the like, and adhere to the seedlings 22 when they are taken out from the tray 20.

If the above contaminants remain attached to the pair of take-out claws 261L and 261R, the contaminants narrow the left-right spacing of the take-out claws 261L and 261R, making it difficult for the take-out claws 261L and 261R to enter the tray 20. The seedlings 22 may be missed from the tray 20, or the seedlings may not be taken out into the planting tool 11 due to a delay, so that a place where the seedlings 22 are not planted, a so-called stock shortage, may occur. It is necessary to remove impurities.

In the above configuration, the left and right extrusion rods 281,281 are formed by processing an elongated wire rod, so that the pair of extraction claws 261L and 261R hold the left and right extrusion rods 281,281 even if they slide in the front-rear direction. Since it is difficult to come into contact with the seedling 22, it is prevented from being damaged when the seedling 22 is extruded, the growth of the seedling 22 is stabilized, and the occurrence of the seedling 22 that withers after planting is prevented.

In addition to this, since the weight of the left and right extrusion rods 281,281 can be made lightweight, the weight is less likely to become a resistance when receiving a driving force, and the extrusion rods 281,281 can slide smoothly back and forth. , The seedling 22 can be reliably extruded and released to the planting tool 11.

Further, by forming the coil portions 281a and 281a on the base side of the left and right extrusion rods 281,281, the loop portions 281b and 281b at the ends move in the left-right direction in conjunction with the opening and closing of the take-out claws 261L and 261R. Also, the amount of movement of the bases of the left and right extrusion rods 281,281 can be suppressed in the left-right direction. As a result, changes in the mounting positions of the left and right extrusion rods 281,281 are prevented, and the seedlings 22 are reliably taken out from the tray 20 and discharged to the planting tool 11 without interfering with the opening / closing operation of the take-out claws 261L and 261R. be able to.

Then, the loop portions 281b and 281b slide back and forth while surrounding the outer peripheral portions of the take-out claws 261L and 261R, so that the take-out claws 261L and 261R are taken out from the tray 20 and released to the planting tool 11 each time. Since the contaminants adhering to the tray can be scraped off, the adhering contaminants make it difficult for the take-out claws 261L and 261R to enter the tray 20 and prevent the seedlings 22 from being taken out.

Alternatively, it is possible to prevent the seedling 22 from being taken out at a delayed timing, the seedling 22 not being released to the planting tool 11 at an appropriate timing, and a portion where the seedling is not planted.

Further, the end portions of the loop portions 281b and 281b formed by winding the extrusion rods 281,281 are located outside the take-out claws 261L and 261R, that is, in the non-holding action region of the seedling 22, so that the extrusion rods 281,281 Since the sharp portion of the edge of the seedling does not come into contact with the seedling 22, the seedling 22 is prevented from being damaged, the growth of the seedling 22 is stabilized, and the occurrence of the seedling 22 that withers after planting is prevented.

In addition to this, by forming each bent portion of the extrusion rods 281, 281 into an R shape, it is possible to prevent the seedlings from being damaged when they come into contact with the seedlings 22, so that the growth of the seedlings 22 is stabilized and after planting The occurrence of dead seedlings 22 is prevented.

Then, when the left and right extrusion rods 281,281 pass above the take-out claws 261L and 261R, the space between the coil portions 281a and 281a and the loop portions 281b and 281b causes the upper part of the seedling 22, that is, the foliage portion to fall. Since it serves as a guide portion for preventing the seedlings 22, the take-out claws 261L and 261R can prevent the seedlings 22 from falling even if the holding posture of the seedlings 22 is somewhat inappropriate. As a result, the posture of the seedlings 22 at the time of release prevents them from entering the planting tool 11 in a posture that allows them to be planted, prevents the occurrence of stock shortages, and eliminates the need for manual replanting of the seedlings 22. Become.

In the above configuration, the operation of the take-out device 200 will be described next with reference to FIGS. 6 to 9. As described above, the guide unit 240 does not move because it is firmly fixed to the take-out device fixing member 201 fixed to the main body of the rice transplanter 1.

The connecting arm 230 swings with the rotation of the drive arm 220, and the movement is such that the first guided member is connected to the substrate 250 through the guide groove 241 formed in the guide portion 240. Regulated by 245.

On the other hand, the substrate 250 also swings with the movement of the connecting arm 230, but in the substrate 250, in addition to the first guided member 245, the second guided member 247 penetrates the guide groove 241. (However, the second guided member 247 is not connected to the connecting arm 230), so that the movement repeats reciprocating movement along the guide groove 241. Since the take-out member 260 is attached to the substrate 250, the take-out member 260 also moves in the same manner as the board 250, and the tips of the pair of take-out claws 261L and 261R 261Lp and 261Rp are shown in FIGS. 8 and 9. Draw a trajectory K.

Here, FIG. 9 is a schematic diagram showing a schematic correspondence between the rotation position of the drive arm 220 and the positions of the pair of take-out claws 261L and 261R at the tip portions 261Lp and 261Rp on the locus K. The rotation positions P1 to P6 of the drive arm 220 shown in FIG. 9 correspond to the positions K1 to K6 on the locus K of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R. The arrow on the broken line indicating the locus K indicates the operating direction.

As shown in FIG. 9, the operation of the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R from the position K1 to the position K2 corresponds to the operation of extracting the seedlings 22 from the seedling raising pot 21. Since the locus K from the position K1 to the position K2 is linear, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R recede straight from the seedling raising pot 21. At this time, a force in a direction approaching each other acts on the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R due to the restoring force of the tension spring 263 to hold the seedlings 22 extracted from the seedling raising pot 21. Can be done. The opening / closing operation of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R will be described later together with the operation of the extrusion rods 281,281.

The operation of the tips 261Lp and 261Rp of the pair of take-out claws 261L and 261R from the position K6 to the position K1 is such that the pair of take-out claws is relative to the seedling 22 in the seedling raising pot 21 of the tray 20 at the seedling take-out position. Since it corresponds to the operation of inserting 261L and 261R and moves in the opposite direction along the same path as the locus K from the position K1 to the position K2, the tips of the pair of take-out claws 261L and 261R 261Lp and 261Rp raise seedlings. It is inserted almost straight into the pot 21. At this time, on the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R, a force acting in the direction away from each other acts against the restoring force of the tension spring 263, and both tips are open. , Can enter the seedling raising pot 21.

As a result, the tips of the pair of take-out claws 261L and 261R, 261Lp and 261Rp, do not damage the tray 20, the seedling raising pot 21, and the seedling itself.

The locus K from the position K1 to the position K2 and the locus K from the position K6 to the position K1 are substantially linear because the side of the guide groove 241 near the tray transport device 100 is formed to be linear. Because it is done.

Next, as the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R move from the position K2 to the position K3, the tip portions 261Lp and 261Rp of the pair of extraction claws 261L and 261R face the seedling raising pot 21 until then. When the posture is suddenly changed from the vertical posture to the substantially downward position and the position is moved to the position K4, the tip portions 261Lp and 261Rp are almost directly downward.

Further, while the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R move from the position K3 to the position K4, the contact position 273c1 (see FIG. 8) in the intermediate protrusion 273c is the root portion of the first holding protrusion 283c. Contact the outer periphery. As a result, the left and right extrusion rods 281,281 project slightly in front of the extrusion position 273a1, and the loop portions 281b and 281b both come into contact with the seedlings 2 and BR> Q.

It should be noted that the reason why the posture is suddenly changed toward the substantially downward direction is that the side of the guide groove 241 far from the tray transport device 100 is formed in a shape that rises in a substantially R shape.

Then, at that time, the seedling input port (not shown) of the planting tool 11 in the ascending step on the locus T1 (see FIG. 1) toward the top dead center is located above the tip portions 261Lp and 261Rp. It faces, and between positions K4 and K5, the extrusion position 273a1 (see FIG. 8) comes into contact with the outer peripheral edge of the root of the first holding projection 283c.

As a result, the extrusion rods 281,281 are completely projected, and the seedlings 22 extruded from the pair of extraction claws 261L and 261R tips 261Lp and 261Rp by the loop portions 281b and 281b of the extrusion rods 281,281 are planted. It is supplied to the tool 11.

Next, from position K5 to position K6, the tips of the pair of take-out claws 261L and 261R, 261Lp and 261Rp, suddenly take a posture so that they can face the next seedling pot 21 in a posture that has been substantially downward. When moving to the position K1 by changing the above, the tip portions 261Lp and 261Rp are inserted into the new seedling raising pot 21.

As can be seen from the approximate correspondence between the rotation position of the drive arm 220 and the position on the locus K of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R shown in FIG. 9, positions K4 to K5 Since the movement toward the position K1 is performed more slowly than the movement toward the position K2 described above, the seedlings 22 can be quickly taken out from the seedling raising pot 21 and the seedlings 22 can be reliably released to the planting tool 11. Can be done.

This operation is performed because the connecting arm 230 is provided on the front side (the extraction position of the tray transport device 100) side of the drive arm 220. Further, since the drive arm 220 is farther from the extraction position of the tray transfer device 100 than the connecting arm 230, it does not come into contact with the seedling 22 when the seedling 22 is taken out, and does not get in the way.

Next, the operations of the transmission mechanism 290 and the extrusion mechanism 280 will be mainly described with reference to FIGS. 6 to 9.

As shown in FIG. 6A, the first gear 291 fixed to the tip side portion 220a of the drive arm 220 by rotating the drive arm 220 in the B direction is centered on the rotation fulcrum 220b of the drive arm 220. Revolve in the B direction. The first gear 291 is rotatably attached to the connecting arm 230 via the first rotation shaft 291a, and rotates the third gear 293 in the B direction via the second gear 292. The third gear 293 is fixed to the tip portion 245b of the first guided member 245, which is integrated with the cam shaft 271, and the edge portion 245a near the tip of the first guided member 245 is connected to the connecting arm 230. Since it is rotatably connected to the other end 230b of the cam 270, the cam 270 rotates in the B direction via the cam shaft 271 due to the rotation of the third gear 293. That is, the cam 270 rotates according to the drive cycle of the drive arm 220.

The cam 270 has an outer peripheral portion 272 whose thickness changes depending on the location, and an outermost edge portion 273 whose distance (outer diameter) from the axis center of the cam shaft 271 changes depending on the location. As shown, the maximum protruding portion 273b in the outermost edge portion 273 has a larger outer diameter than the minimum protruding portion 273a, and the thickness of the first range 272a in the outer peripheral portion 272 at the same distance from the axis center of the cam shaft 271. Is set thinner than the thickness of the second range 272b, which is the remaining thick portion.

Under the above configuration, when the cam 270 rotates in synchronization with the drive cycle of the drive arm 220, the tips of the pair of take-out claws 261L and 261R 261Lp and 261Rp move from position K6 to position K1. The opening / closing operation of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R and the operation of the extrusion rod 281 are as follows.

That is, the second range 272b, which is a thick portion of the outer peripheral portion 272 of the cam 270, comes into contact with the tip surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R, so that the pair of take-out claws 261L and 261R The tip portions 261Lp and 261Rp of the above are in a state in which both tip portions are open because a force acting in a direction away from each other acts against the restoring force of the tension spring 263.

On the other hand, at this time, the tension spring 284 is stretched because the maximum protrusion 273b of the outermost edge portion 273 of the cam 270 is in contact with the outer peripheral edge portion of the root portion of the first holding protrusion 283c. The extrusion arm 283 rotates counterclockwise in FIG. 8 (see arrow C) to keep the extrusion rods 281,281 connected by the mounting shaft 282 retracted. Therefore, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R can enter the seedling raising pot 21 and take out the seedlings.

Next, when the tips of the pair of take-out claws 261L and 261R 261Lp and 261Rp perform the operation from the position K1 to the position K2, the opening and closing operations of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R and extrusion are performed. The operation of the rod 281 is as follows.

That is, at the same time when the operation from the position K1 to the position K2 is started, the first range 272a, which is a thin portion of the outer peripheral portion 272 of the cam 270, becomes the tip surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R. Upon contact, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R move in directions closer to each other due to the restoring force of the tension spring 263, so that both tip portions are in a closed state.

On the other hand, at this time, the tension spring 284 is stretched because the maximum protrusion 273b of the outermost edge 273 of the cam 270 is still in contact with the outer peripheral edge of the root of the first holding protrusion 283c. The extrusion arm 283 maintains a state of rotating counterclockwise in FIG. 8 (see arrow C), and maintains a state in which the left and right extrusion rods 281,281 connected by the mounting shaft 282 are retracted. There is.

Therefore, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R can firmly hold the taken out seedling 22 at the tip portion and move to the planting tool 11 side as it is.

While the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R move from the position K3 to the position K4, the contact position 273c1 (see FIG. 8) in the intermediate protrusion 273c is the root portion of the first holding protrusion 283c. As described above, the extrusion rods 281,281 are slightly projected in front of the extrusion position 273a1 and the loop portions 281b and 281b are in contact with the seedlings 22 because they come into contact with the outer peripheral edge portion.

Next, when the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R perform an operation from the position K4 to the position K5, the opening and closing operations of the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R and extrusion are performed. The operation of the rods 281,281 is as follows.

That is, at the same time when the operation from the position K4 to the position K5 is started, the minimum protruding portion 273a of the outermost edge portion 273 of the cam 270 is moved to the outer peripheral edge portion of the root portion of the first holding protrusion 283c instead of the intermediate protruding portion 273c. Contact.

As a result, due to the restoring force of the tension spring 284, the extrusion arm 283 rotates slightly clockwise when the root portion of the first holding protrusion 283c moves to the contact position 273c1 in front of the extrusion position 273a1. When it reaches the extrusion position 273a1, it instantly turns clockwise (see arrow D in FIG. 8).

That is, the extrusion rod 281 connected by the mounting shaft 282 protrudes slightly when the root portion of the first holding protrusion 283c reaches the contact position 273c1, and then the extrusion rod 281 completely protrudes when it reaches the extrusion position 273a1. At the same time, the loop portions 281b and 281b of the extrusion rods 281,281 move while expanding the tip portions of the pair of take-out claws 261L and 261R.

As a result, the extrusion rods 281,281 are projected to the extent that the loop portions 281b and 281b come into contact with the seedlings 22, and then the seedlings 22 are extruded at the extrusion position 273a1 so that the root pot does not easily collapse and the seedlings 22 are planted. The timing of discharging to the tool 11 is also stable.

Further, since the loop portions 281b and 281b move while surrounding the outer circumferences of the pair of take-out claws 261L and 261R and expanding the tip end side, the contaminants adhering to the take-out claws 261L and 261R are removed. It is removed at the same time, and the left-right spacing of the take-out claws 261L and 261R is maintained so that the seedlings 22 can be smoothly taken out from the tray 20.

Next, when the pair of take-out claws 261L and 261R tip portions 261Lp and 261Rp perform an operation from position K5 to position K6, the pair of take-out claws 261L and 261R tip portions 261Lp and 261Rp are opened and closed, and the extrusion rod. The operations of 281,281 are as follows.

That is, of the outer peripheral portion 272 of the cam 270, the second range 272b, which is a thick portion instead of the first range 272a, which is a thin portion, comes into contact with the tip surfaces of the pair of left and right claw tip width regulating protrusions 262L and 262R. By doing so, the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R are changed to a state in which both tip portions are opened by the action of a force in the direction away from each other against the restoring force of the tension spring 263. To do.

On the other hand, when the cam 270 comes near the position K6, the maximum protrusion 273b instead of the minimum protrusion 273a of the outermost edge portion 273 of the cam 270 comes into contact with the outer peripheral edge portion of the root portion of the first holding protrusion 283c. , The tension spring 284 is stretched, the extrusion arm 283 is swung counterclockwise in FIG. 8 (see arrow C), and the extrusion rods 281,281 connected by the mounting shaft 282 are retracted. Change.

The case where the pair of take-out claws 261L and 261R are integrally formed from the root portion to the tip portion and are made of the same metal plate member has been described, but the present invention is not limited to this, and the tip side is removed. For example, it may be composed of a rubber plate or a resin plate which is possible and has elasticity. As a result, even if the tip portion grabs the seedling 22 by the restoring force of the tension spring 263, the rubber plate is deformed by the elasticity of the tip side, so that the effect of not crushing the seedling 22 can be exhibited.

Further, the extrusion rods 281,281 cover the upper parts of the pair of extraction claws 261L and 261R at the tips 261Lp and 261Rp until the tips of the pair of extraction claws 261L and 261R move to the vicinity of the position K6. It has a structure. As a result, when moving from the position K5 to the position K6, it is possible to prevent the leaves of the seedlings 22 on the tray 20 from being caught by the tips 261Lp and 261Rp of the pair of take-out claws 261L and 261R.

Further, the extrusion rods 281,281 are configured to retract according to the insertion speed when the tip portions 261Lp and 261Rp of the pair of take-out claws 261L and 261R are inserted into the seedling raising pot 21. This makes it possible to prevent the leaves of the seedling 22 from being entangled with the tips 261Lp and 261Rp.

Next, with reference to FIGS. 4 and 5, the mechanism for intermittently driving the tray feed rod 121 of the tray transfer device 100 will be further described.

As shown in FIG. 5, in the tray vertical feed device 120, (1) the tray feed rod 121 described above and (2) the upper tip portion 121b1 of both end portions 121b of the tray feed rod 121 are fixed, and one of them is curved inward. A feed rod arm 130 having a protruding cam 131 having a curved edge 131a formed at a lower portion and (3) a root portion 141 are rotatably supported by a side plate 110a of a seedling stand 110, and a feed rod is supported by a tip portion 142. (4) Seedlings and a feed arm 140 in which a first concave portion 143a, a second convex portion 143b, and a third concave portion 143c are smoothly and continuously formed on a lower end edge portion that rotatably supports the arm 130. When viewed from the take-out device 200 side, the vertical feed rotation shaft 151 that rotates in the arrow E direction by the driving force obtained from the power source of the transplant machine 1 is located at two positions, the center position and the right end position of the vertical feed rotation shaft 151. A vertical feed drive arm 150, which is fixed to each other and has a check roller 152 rotatably at its tip, is provided.

Further, a feed arm pulling spring 160 is attached between the tip portion 142 of the feed arm 140 and the lower portion 110a1 of the side plate 110a of the seedling stand 110 so that a downward pulling force is always applied to the feed arm 140. ing. Further, a spring mounting rod 163 for holding the other end of the feed rod arm tension spring 161 having one end attached to a pin 132 attached to the upper end of the feed rod arm 130 is fixed to the root portion 141 of the feed arm 140. Has been done.

Next, the intermittent operation of the tray feed rod 121 will be described with reference to FIGS. 4 and 5.

It is assumed that the seedling stand 110 is moving to the right, that is, in the direction of arrow F (see FIG. 5) due to the rotation of the lead cam shaft 171. At that time, the vertical feed rotation shaft 151 is rotating in the direction of arrow E (see FIG. 5).

In the meantime, the extraction device 200 sequentially takes out the seedlings 22 from the rightmost seedling raising pot 21 and supplies the seedlings 22 to the planting tool 11, and after that, when the seedling stand 110 moves to the rightmost end, the leftmost end. The seedlings 22 of the seedling raising pot 21 are taken out by the extraction device 200. As a result, all the seedlings 22 for one horizontal row of the seedling raising pot 21 have been taken out.

At this time, it is rotatably attached to the tip of the vertical feed drive arm 150 fixed to the right end of the vertical feed rotation shaft 151, which rotates in the direction of arrow E together with the vertical feed rotation shaft 151. Since the check roller 152 starts contacting with the first recess 143a of the feed arm 140 and then starts contacting with the curved edge 131a of the feed rod arm 130 with a slight delay, the tray feed rod 121 has a configuration. After moving ascending once with the clockwise rotation of the feed arm 140, it starts rotating counterclockwise at the center of the axis of the tip portion 142.

That is, the tray feed rod 121 once moves upward in the direction of the arrow 121a0 (see FIGS. 4 (b) and 5), so that the protrusion 121ab of the tray feed rod 121 previously held by the notch 112a However, as soon as it comes out of the notch 112a, the central portion 121a of the tray feed rod 121, which has been waiting in the gap 21a on the back side of the seedling raising pot 21, also moves upward in the direction of the arrow 121a0 within the gap 21a. .. After that, the feed rod arm 130 starts rotating counterclockwise at the center of the axis of the tip portion 142, so that the central portion 121a of the tray feed rod 121 moves in the direction of the arrow 121a1 (see FIG. 5). The notch depth of the notch portion 112a is set so that the central portion 121a of the tray feed rod 121 can move within the range of the gap 21a.

After that, when the check roller 152 continues to rotate, the check roller 152 continues to be in contact with the curved edge portion 131a of the feed rod arm 130, so that the central portion 121a of the tray feed rod 121 is located in the evacuation groove 111a. The state is maintained. At this time, at the same time, the check roller 152 moves from the first concave portion 143a of the feed arm 140 toward the second convex portion 143b, so that the feed arm 140 further rotates clockwise, and the central portion 121a of the tray feed rod 121 As a result, it moves in the direction of the arrow 121a2 (see FIG. 5) while maintaining the state of being located in the retract groove 111a.

After that, when the check roller 152 continues to rotate, the check roller 152 becomes non-contact with the curved edge 131a of the feed rod arm 130, and at the same time, the feed rod arm 130 is moved by the restoring force of the feed rod arm tension spring 161. By instantaneously rotating clockwise around the axis of the tip portion 142, the central portion 121a of the tray feed rod 121 is directed from the gap 21a toward the gap 21b located one row above the seedling raising pot 21 by the arrow 121a3. Move as shown in.

After that, when the check roller 152 continues to rotate, the check roller 152 moves while contacting the third recess 143c of the feed arm 140, so that the feed arm 140 moves downward due to the restoring force of the feed arm tension spring 160. As a result, the central portion 121a of the tray feed rod 121 is pulled and moves in the direction of the arrow 121a4 (see FIG. 5) while maintaining the state of being located in the gap 21b, and the central portion of the tray feed rod 121. The protrusion 121ab of 121a is held by the notch 112a.

The central portion 121a of the tray feed rod 121 moved in the direction of the arrow 121a4 (see FIG. 5) is maintained in a state of being located in the gap between the seedling raising pots on the back side of the seedling raising pot 21, and the seedling stand 110 is used. When the movement is started in the direction of arrow G, that is, to the left, the extraction device 200 sequentially takes out the seedlings 22 from the leftmost seedling raising pot 21 and supplies the seedlings 22 to the planting tool 11, and then the seedling stand 110 is at the leftmost end. At the time of moving to, the seedling 22 of the rightmost seedling raising pot 21 is taken out by the extraction device 200. As a result, all the seedlings 22 for one horizontal row of the seedling raising pot 21 have been taken out.

During this period, the protrusion 121ab of the central portion 121a of the tray feed rod 121 is held by the notch 112a, so that the tray 20 shifts downward due to the weight of the seedlings 22 placed in the seedling raising pot 21. Can be prevented.

When all the seedlings 22 for one horizontal row of the seedling raising pot 21 are taken out, unlike the above, they can be rotated to the tip of the vertical feed drive arm 150 fixed at the center position of the vertical feed rotation shaft 151. The attached check roller 152 starts contact between the curved edge portion 131a of the feed rod arm 130 and the first recess 143a of the feed arm 140.

By repeating the above operation, the tray 20 is moved to the right or left, and is intermittently vertically fed by one row of the seedling raising pot 21.

As a result, the tray vertical feed device 120 having a compact structure can be obtained. Further, the tray transport path 111 can be supported so as to be movable left and right by the simple structure of the guide rail 155 and the lead cam shaft 171.

Further, since the central portion 121a of the tray feed rod 121 is arranged on the flat surface portion 111b of the tray transport path 111, the tray 20 does not bend inward, so that a gap having a constant width is provided on the back side of the seedling raising pot 21. Since 21a and 21b can be secured, the tray feed rod 121 can surely enter the gaps 21a and 21b.

Further, since the curved surface portion 111c is provided on the downstream side of the flat surface portion 111b of the tray transport path 111, the tray 20 bends along the curved surface portion. Therefore, even when the tray feed rod 121 is moving in the direction of the arrow 121a2 during tray feed, the deflection becomes a resistance and the tray 20 is prevented from shifting to the downstream side.

When the tray 20 is vertically fed by the tray transport device 100, the tray 20 needs to be vertically fed by exactly one row so that the next left and right row of seedlings 22 can be properly taken out by the extraction device 200. However, since the vertical feed of the tray 20 is the movement due to the contact of the tray feed rod 121 and its own weight, the seedlings 22 cannot be taken out by the take-out device 200 or the taking-out posture is disturbed unless the tray 20 is vertically fed to an appropriate position. When released to the planting tool 11, the planting tool 11 does not enter the planting tool 11 in a posture suitable for planting, so that a place where seedlings cannot be planted, a so-called lack of stock, may occur.

If the tray 20 is on the upper side in the moving direction from the position suitable for taking out the seedlings, even if the tray feed rod 121 has entered the groove on the back side of the tray, it will move to the lower side due to the vibration of the machine body or its own weight. The effect of the above problem is small because it moves to a position suitable for taking out seedlings.

However, when the tray 20 is on the lower side in the moving direction than the position suitable for taking out the seedlings, it does not naturally move to the position suitable for taking out the seedlings, and the stock is missing for at least one row on the left and right. It is more likely to occur. Although the operator can adjust the position of the seedling tray, if the position of the tray 20 is changed during lateral feeding, the take-out device 200 cannot take out the seedling 22 and a stock shortage may occur.

Further, depending on the amount of movement of the tray 20, the tray 20 moves to the lower side by two rows, and one row of seedlings exceeding the seedling extraction position remains in the tray 20, and the seedlings are planted as planned. There is a problem that it cannot be done.

In order to solve these problems without causing stock shortage, the planting work may be temporarily stopped and the position of the tray 20 may be manually corrected, but the planting work is interrupted during that time. There is a problem that work efficiency is reduced.

In order to solve the above problem, the brake arms 180L and 180R that come into contact with the upper surface of the tray 20 to regulate the movement at the end of the vertical feed are placed on both the left and right sides of the tray transport device 100 and beyond the working area of the tray feed rod 121. Each is provided above (on the upper side in the moving direction of the tray 20).
If the left and right brake arms 180L and 180R are in constant contact with the tray 20, the tray 20 will not move to the seedling extraction position due to resistance, so that the left and right brake arms 180L and 180R will operate the tray feed rod 121. The configuration is such that the brake state and the release state are switched in conjunction with each other.

As shown in FIGS. 10 and 11, a spring receiving stay 181 (see FIG. 11) having a long hole for receiving a pin 132 for hooking one end of the feed rod arm tension spring 161 is provided at the upper end of the protruding cam 131. .. One end of the spring receiving stay 181 has an arc shape. Further, the right brake interlocking arm 183R is provided on the right brake rotation shaft 182R of the right brake arm 180R. The right brake arm 180R is provided on the lower side of the tray transport device 100 in the transport direction, and the right brake interlocking arm 183R is provided on the lower side of the tray transport device 100 in the transport direction.

Then, on the mounting base side of the right brake interlocking arm 183R, a plurality of adjusting mounting holes 183aR ... Are formed in the circumferential direction of the right brake rotating shaft 182R, and the mounting base side of the right brake arm 180R. One mounting hole 180aR is formed in the. Further, one end of the torque spring 184 provided on the right brake rotation shaft 182R is mounted on the mounting hole 180aR, and the other end is mounted on any one of the adjusting mounting holes 183aR ..., and the right brake arm 180R The braking force is adjustable.

At the end of the brake interlocking arm 183R on the right side, a wide portion 185R having a vertical width wider than the other portions is formed in the side view. The wide portion 185R is configured to project toward the protruding cam 131 and the spring receiving stay 181 to widen the width. The wide portion 185R is formed with a tight taper angle.

The front end portion of the spring receiving stay 181 moves in conjunction with the rotation of the protruding cam 131, and comes into contact with the brake interlocking arm 183R on the right side at a predetermined position to put the brake arm 180R on the right side into the tray 20. Apply the brakes by contacting.

On the other hand, as shown in FIG. 11, the brake arm 180L on the left side is not at a position where it comes into contact with the spring receiving stay 181, so that the configuration is different from that on the right side.

The left brake interlocking arm 183L is provided coaxially with the left rotation shaft 182L of the left brake arm 180L. Further, the left brake arm 180L is provided on the lower side of the tray transport device 100 in the transport direction, and the left brake interlocking arm 183L is provided on the lower side of the tray transport device 100 in the transport direction.

Then, on the mounting base side of the left brake interlocking arm 183L, a plurality of adjusting mounting holes 183aL ... Are formed in the circumferential direction of the left brake rotating shaft 182L, and the mounting base side of the left brake arm 180L. One mounting hole 180aL is formed in the. Further, one end of the torque spring 184 provided on the left brake rotation shaft 182L is mounted in the mounting hole 180aL, and the other end is mounted in any one of the adjusting mounting holes 183aL .... The braking force is adjustable.

The brake interlocking arm 183L is configured to rotate in contact with the check roller 152 provided on the vertical feed drive arm 150, and is narrower than other portions on the surface in contact with the check roller 152 and on the end side. A narrow portion (recess) 185 L is formed.

Hereinafter, switching between braking action and non-braking action of the tray 20 by the left and right brake arms 180L and 180R will be described.

First, when the tray feed rod 121 is moving downward of the tray 20 (121a1), the spring receiving stay 181 is separated from the brake interlocking arm 183R on the right side, and the check roller 152 is separated from the brake interlocking arm 183L on the left side. The left and right brake arms 180L and 180R are separated from the tray 20 upward by separating from the tray 20.

As a result, the left and right brake arms 180L and 180R do not become resistance at the start of vertical feed of the tray 20, and the tray 20 starts to move due to its own weight.

Then, while the tray feed rod 121 moves to the lower side of the tray 20 and then moves to the next row (between 121a2 and 121a3), the spring receiving stay 181 contacts the brake interlocking arm 183R on the right side and restrains the tray. The roller 152 contacts the left brake interlocking arm 183L to bring the left and right brake arms 180L and 180R into contact with the surface of the tray 20.

As a result, braking force can be applied to both the left and right sides of the tray 20 that has begun to move, so that the tray 20 is prevented from moving significantly to the lower side in the moving direction due to its own weight, and the tray 20 moves by one row or more. It is prevented from stopping from.

Further, when the tray 20 moves by one row and the tray feed rod 121 contacts the back surface of the tray 20 (121a4), the spring receiving stay 181 contacts the wide portion 185R of the brake interlocking arm 183R on the right side, and the check roller The 152 comes into contact with the narrow portion 185L of the left brake interlocking arm 183L, thereby weakening the force with which the left and right brake arms 180L and 180R come into contact with the surface of the tray 20.

As a result, it is possible to prevent the left and right brake arms 180L and 180R from acting too much and stopping the movement of the tray 20 in contact with the tray feed rod 121 on the better side than the position suitable for taking out the seedlings. , The tray 20 can be stopped at a position suitable for taking out the seedlings, and the occurrence of stock shortage is prevented.

Some trays 20 have different numbers of holes for cultivating seedlings 22, and generally, trays 20 have 128 holes and 200 holes. As a matter of course, the 200-hole tray 20 has a longer front-rear length than the 128-hole tray 20.

The configuration in which the wide portion 185R is formed on the right brake interlocking arm 183R and the narrow portion 185L is formed on the left brake interlocking arm 183L acts when the tray 20 having 200 holes having a long front and rear length is stopped. Assuming that when using the 128-hole tray 20, the movement of the tray 20 is stopped when the braking force of the left and right brake arms 180L and 180R is strong (121a3), and the number of holes is the same with the same seedling transplanter. Since planting work can be performed using different trays 20, it is necessary to cultivate seedlings only on the tray 20 suitable for the seedling transplanting machine, or to select and carry only the tray 20 suitable for the seedling transplanting machine. Therefore, the labor of work is reduced and the adaptability of work conditions is improved.

In the above, it is said that the movement of the tray 20 causes a problem. However, if the tray feeding device 121 is moving away from the set trajectory, the tray feeding device 121 pulls the tray 20 downward in the transport direction. , It will be moved beyond the position suitable for taking out the seedlings.

In order to prevent this, as shown in FIG. 12, rod rails 121r through which the left and right ends of the tray feed rod 121 pass may be formed on the left and right side plates provided on the left and right sides of the tray transport path 111. By making the left and right ends of the tray feed rod 121 the same as the locus drawn when the tray 20 is vertically fed, the rod rail 121r prevents the tray feed rod 121 from drawing a locus unsuitable for transporting the tray 20. To do.

As a result, since the tray feed rod 121 can accurately move the tray 20 by one row, the seedlings are surely taken out and the occurrence of stock shortage is prevented.

The planting tool 11 is for planting seedlings received from the extraction device 200 in a field, and at the time of planting, the planting tool 11 is configured to enter the soil while opening the lower side in order to open the seedlings. As a result, soil in the field may adhere to the inside of the planting tool 11. When this soil accumulates inside the planting tool 11, a part of the space inside the planting tool 11 is occupied by the soil, and the posture of the seedlings received from the extraction device 200 becomes unsuitable for planting due to the soil. The growth of seedlings planted in the plant may be affected.

In order to prevent this, the planting tool 11 is provided with a cleaning device that supplies the cleaning water conveyed by the water pump 500, and the soil is washed away with the planting of the seedlings 22 when the planting tool 11 descends.
As a result, the soil in the planting tool 11 is washed away each time the planting tool 11 is planted, so that the posture of the seedlings is prevented from being disturbed due to the accumulation of soil, and the planting accuracy of the seedlings is improved.

The configuration of the water supply pump 500 will be described. As shown in FIGS. 13 and 14, a transmission shaft 510 for transmitting a driving force from the extraction device 200 to the tray transfer device 100 is projected to the left and right sides (right side) of the machine body, and a crank plate 520 is mounted on the transmission shaft 510 in the clockwise direction. It is installed so that it can be rotated integrally with it. Specifically, the support plate 515 is attached to the end of the transmission shaft 510, and the crank plate 520 is attached to the support plate 515 from the outside of the machine body via a fixing member 521 such as a bolt.

In addition, in order to mount the fixing member 521, a first adjustment elongated hole 522 is formed in the crank plate 520, and a second adjustment elongated hole 523 longer than the first adjustment elongated hole 522 is formed.
By changing the position of passing the fixing member 521 through the first adjusting slot 522 and the second adjusting slot 523, the timing at which the water supply pump 500 supplies water is adjusted.

Further, the crank plate 520 is formed with four rod mounting holes 525 ... At predetermined angles around the transmission shaft 510, specifically every 90 degrees. The four rod mounting holes 525 ... Are not located on concentric circles centered on the transmission shaft 510.

Then, the crank plate 520 is mounted on the transmission shaft 510 so that the rod mounting hole 525, which should have an arbitrary amount of water supply, is located on the rear side of the machine body among the four rod mounting holes 525, and the rod mounting hole 525 is filled with the crank plate 520. One side end of the pump rod 530 is attached. Further, the other end of the pump rod 530 is connected to a pump case 540 for taking in and out washing water.

Since none of the four rod mounting holes 525 ... Are concentric, the amount of forward / backward movement of the pump rod 530 is changed for each mounting position, so that the amount of water supplied by the water pump 500 can be set.

A pump head 550 is provided on one side of the pump rod 530, and a bearing 560 that rotatably supports the pump rod 530 is provided inside the pump head 550. Further, pump support shafts 570 and 570, which serve as fulcrums of the water supply pump 500, are provided on both the left and right sides of the pump head 550 and the bearing 560.

When the bearing 560 and the pump support shafts 570 and 570 are brought into contact with each other and lubricated from one grease nipple 650 provided on the pump head 550, grease is supplied to both of them, reducing the time and labor required for the lubrication work. Try.

Further, a suction nipple 580 for connecting a water supply hose (not shown) connected to the water tank is provided on one side (right side) and upper side of the pump head 550 on the left and right sides of the machine body, and on the other side (left side) and lower side of the machine body. Is provided with a delivery nipple 590 for connecting a water supply hose (not shown) for sending water to the planting tool 11.

As shown in FIG. 13 which is a side view, the bottom surface of the delivery nipple 590 is configured to be located below the bottom portion of the pump case 540.

The suction nipple 580 and the delivery nipple 590 are connected to a valve plate 600 provided inside the valve head 550. The valve plate 600 is configured by connecting three plates. Specifically, it is composed of a pair of water flow plates 610F and 610R and an intermediate plate 620 provided between the front and rear of the water flow plates 610F and 610R.

As shown in FIG. 15, the water flow plates 610F and 610R have mounting holes 611 formed in the central portion for mounting on the pump rod 530, and a U-shape in a front (rear) view on a part of the circumference. A notch portion 612 having a shape is formed, and a round hole 613 is formed at a position to be point-symmetrical about the mounting hole 611, and the members have substantially the same shape. When mounted on the pump rod 530, the water flow plate 610F on the front side is arranged so that the notch 612 faces the suction nipple 580 side and the round hole 613 faces the delivery nipple 590 side, and the water flow plate 610R on the rear side faces. The round hole 613 faces the suction nipple 580 side, and the notch 612 faces the delivery nipple 590 side.

Further, the intermediate plate 620 has a mounting hole 621 formed in the central portion for mounting on the pump rod 530, and a pair of intermediate cutout portions 622 and 622 are formed at positions to be point-symmetrical about the mounting hole 621. To form.

Since the intermediate plate 620 is made of an elastic material such as rubber, the protruding portions 623 and 623 located between the left and right of the intermediate cutout portions 622 and 622 block the water path when they come into contact with the round holes 613 and 613. Therefore, it becomes possible to move water to the notches 612 and 612.

Further, a piston head 640 for taking in and out water is provided on the rear side of the pump rod 530. The piston head 640 is composed of front and rear piston plates 641, 641 having a diameter along the inner diameter of the pump case 540, and O-rings 642 provided between the front and rear piston plates 641, 641 to prevent water leakage.

In the above configuration, when the transmission shaft 510 rotates in conjunction with the operation of the take-out device 200, the crank plate 520 rotates over a predetermined angle in the clockwise direction. As a result, the pump rod 530 slides in the rod mounting hole 525 ... Attached, and the piston head 640 slides in the pump case 540 in the front-rear direction. The water supply pump 500 is configured to rotate up and down with the left and right pump support shafts 570 and 570 provided on the pump head 550 as fulcrums so as not to hinder the sliding of the pump rod 530.

In the water supply pump 500 of the present case, when the pump rod 530 moves to the front side of the machine body by the clockwise rotation of the crank plate 520 and the piston head 640 moves from the rear side to the front side of the machine body, the delivery nipple 590 moves to the planting tool 11 side. Since the structure is such that water is supplied, the pump rod 530 moves by the driving force of the transmission shaft 510. As a result, the load due to water pressure is less likely to be applied to the pump rod 530, so that the pump rod 530 can be made thinner than before, so that the water supply pump 500 can be made compact.

Further, since the valve plate 600 is provided in the pump head 550, the pump capacity can be adjusted by changing the pump case 540 to one having a different length, so that the applicable range of working conditions is widened.

Then, in the side view, the bottom of the delivery nipple 590 is located below the bottom of the pump case 540, so that the water in the pump case 540 is completely drained when the water supply pump 500 is idled at the time of drainage. Therefore, it is possible to prevent the water supply pump 500 from being damaged by the water remaining inside.

11 Planting tool 20 tray 22 seedling 100 tray transport device (transport device)
200 Extraction device 261L Extraction claw (Extraction member)
261R Take-out claw (take-out member)
281 Extruded rod (extruded member)
281a Coil part 281b Loop part 282 Mounting shaft 282a Separation protrusion

Claims (2)

A transport device (100) for transporting the tray (20) on which the seedlings (22) are vegetated, and a take-out device (200) for taking out the seedlings (22) from the tray (20) that the transport device (100) has moved to a predetermined position. In a transplanter provided with a planting tool (11) for planting seedlings (22) taken out by the extraction device (200) in a field.
The transport device (100) moves the tray (20) at predetermined distances, and the tray feed rod (121) restricts the movement of the tray (20) when the take-out device (200) takes out seedlings. ) And a pair of brake arms (180L, 180R) that attenuate the moving force of the tray (20) and stop it at a predetermined position.
A brake interlocking arm (183L, 183R) that switches between an operating state and a non-acting state of the brake arm (180L, 180R) in conjunction with the operation of the transport device (100) is provided.
Of the brake interlocking arms (183L, 183R), one interlocking regulating member (183L) is formed with a narrow portion (185L) that weakens the damping action of the moving force of one brake arm (180L), and the other. A transplanter characterized in that a wide portion (185R) is formed on an interlocking regulation member (183R) to weaken the damping action of the moving force of the other brake arm (180R). The tray feed rod (121) is configured to move a predetermined locus in conjunction with the transport of the tray (20) of the transport device (100).
Claims, characterized in that the side of the tray feed rod (121) to provide a side plate (111a), to form a rail (121r) along the moving path of the tray feeding rod (121) to the side plate (111a) The transplanter according to 1.

Images