JP2007209260A - Paddy working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To bring a paddy working machine to be able to scatter grains in bulk for every stock in the paddy working machine constituted to deliver grains stored in a hopper in a predetermined amount by rotary delivery mechanism, feed the grains to bury in a channel formed on a rice field surface with traveling of a machine body and bury the grains. <P>SOLUTION: In the paddy working machine, a delivery rotor 13 installed to the delivery mechanism 11 is constituted to intermittently rotate in a certain direction with a predetermined angle, an intermittent rotation pitch of the delivery rotor 13 is brought to coincide with a pitch in the circumferential direction of delivery concave portions 29 formed in the delivery rotor 13 and, in a stopped state of the delivery rotor 13, the whole body of the forgoing delivery concave portion 29 is brought to face to a discharge port 30 formed in a delivery case 12 and the whole body of the delivery concave portion 29 succeeding to the delivery concave portion 29 is brought to be closed by a peripheral wall of the delivery case 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  According to the present invention, powder particles such as seeds and fertilizers stored in a hopper are fed out by a predetermined amount by a rotary feeding mechanism, and supplied to a buried groove formed on a rice field as the machine travels to be buried. It relates to the configured paddy field machine.

As a paddy direct sowing machine that is an example of the paddy field work machine, for example, as shown in Patent Document 1, the soy seeds stored in the hopper 10 are accompanied by intermittent rotation of the feeding roll 12 provided in the feeding mechanism 11. Then, the seeds fed to the buried grooves formed on the paddy surface are supplied by the grooving device 23 provided on the leveling float 22 and the buried grooves 33 are provided on the bottom surface of the leveling float 22 to refill the buried grooves. What is composed is known.
Japanese Patent No. 36552273

  The feeding mechanism utilized in the paddy direct sowing machine is that the feeding roll 12 incorporated in the feeding case is intermittently rotated by a push-pull rod that reciprocates by a crank motion. Corresponding to the operation and the pulling-down operation, the feeding roll 12 is sequentially rotated in a certain direction, so that the seeds are fed almost without interruption, and are fed down to the buried groove in the state of seeding. there were.

  Since crops (paddy rice) that are sown are difficult to grow as a solid stock, depending on the variety, it may be easy to fall.

  Even in rice transplanters equipped with a fertilizer application machine that seeds powdered fertilizer along the side of the planting line at the same time as the rice planting work, the planting plant before and after the fertilizer is sown along the lateral side of the planting line During this period, there was a tendency that the fertilizer at the corresponding location was not used effectively.

  The present invention has been made paying attention to such points, and has as its main purpose to allow seeds such as seed pods and fertilizers to be sown together for each strain.

A first aspect of the present invention is a paddy field configured such that a granular material stored in a hopper is fed out by a predetermined amount by a rotary feeding mechanism, and supplied to a buried groove formed on a rice field as the machine travels to be buried. In the work machine,
The feeding rotary body provided in the feeding mechanism is configured to intermittently rotate in a fixed direction at a predetermined angle, and the intermittent rotation pitch of the feeding rotary body and the circumferential pitch of the feeding recesses formed in the feeding rotary body are determined. In the stop state of the feeding rotating body, the entire preceding feeding recess faces the discharge port formed in the feeding case, and the entire feeding recess following the feeding recess is closed by the peripheral wall of the feeding case. It is characterized by being.

  According to the above configuration, when the feeding rotary body is rotated by one pitch, only one (or a plurality of) feeding recesses face the discharge port, and the powder particles accommodated in the feeding recesses become the discharge port. Until the next feeding rotating body rotates, the feeding of the granular material is stopped, and the granular material in the subsequent feeding concave portion does not leak out.

Therefore, according to the first invention, every time the feeding rotary body is rotated by one pitch, intermittent feeding is performed by a predetermined amount, and in the case of sowing, the seed pods are sown together for one strain. Thus, even crops that are prone to lodging can be grown into a stock that is difficult to lodging.
In addition, in the case of fertilization, fertilizer can be seeded for each planting strain and used for growth without waste.

According to a second invention, in the first invention,
A cover member for refilling the buried groove is provided so that the angle of the cover member can be adjusted with respect to the aircraft traveling direction, and an actuator for adjusting the angle of the soil covering member is automatically operated in response to fluctuations in the vehicle traveling speed. Is.

  According to the above configuration, since the mud pushing function by the soil covering member increases as the aircraft traveling speed increases, the excessive mud pushing by the soil covering member is reduced by reducing the angle of the soil covering member with respect to the aircraft traveling direction as the aircraft traveling speed increases. Can be suppressed. Accordingly, it is possible to prevent the soil from being agitated by excessive mud pushing by the soil covering member, to prevent the embedded powder particles from flowing together with the mud, and to stably maintain the intermittent sowing pattern with a predetermined pitch.

According to a third invention, in the first or second invention,
A soil covering member for refilling the buried groove is equipped so that the angle can be adjusted with respect to the aircraft traveling direction, and an actuator for adjusting the angle of the soil covering member corresponds to the variation in the mud hardness detected by the mud hardness detecting means. Control means for automatically operating is provided.

According to the above configuration, when the mud becomes weak, the fluidity of the mud by the soil covering member increases. Therefore, by reducing the angle of the soil covering member with respect to the aircraft traveling direction so that the mud hardness is small (soft), the soil covering member is excessive. Mud push can be suppressed.
By doing in this way, the agitation of the soil due to excessive mud pushing by the soil covering member can be prevented, the embedded granular material can be prevented from flowing together with the mud, and the intermittent sowing pattern with a predetermined pitch can be stably maintained. .

Since the amount of mud pushing by the soil covering member decreases when the mud becomes hard, increasing the angle of the soil covering member with respect to the aircraft traveling direction as the mud hardness increases (hardens) allows sufficient mud pushing with the soil covering member. Insufficient backfilling can be prevented.
By doing in this way, it can prevent that the sowinged granular material floats on the rice field and flows, and the intermittent sowing pattern with a predetermined pitch can be stably maintained.

According to a fourth invention, in the second or third invention,
Setting means for manually setting and adjusting the reference angle of the soil covering member is provided.

  According to the above configuration, the reference angle of the soil covering member is suitably set and adjusted according to the depth, mud hardness, viscosity, etc. of the paddy field, and backfilling without excess or deficiency is performed to stabilize the intermittent sowing pattern with a predetermined pitch Can be maintained.

  The whole side surface of the paddy field direct sowing machine which is an example of the paddy field working machine which concerns on this invention is shown by FIG. This paddy direct sowing machine is obtained by converting a riding type rice transplanter with a fertilizer application to a paddy field direct sowing machine, and a parallel four driven by a hydraulic cylinder 2 at the rear of a riding traveling machine body 1 configured as a four-wheel drive type. A 6-row seeding device 4 is connected to be able to move up and down through a lifting link mechanism 3 having a continuous link structure, and a fertilizer device 5 is provided at the rear portion of the riding traveling machine body 1. In addition, as mentioned later, it replaces with the said seeding apparatus 4, and can connect the seedling planting apparatus 80 to the rear part of the raising / lowering link mechanism 3, and can constitute a riding type rice transplanter with a fertilizer application apparatus.

  As shown in FIGS. 2, 5, and 6, the front portion of the seeding device 4 is provided with a vertically long connecting frame 6 that is detachably connected to the rear end of the lifting link mechanism 3. A main frame 7 made of a horizontally long pipe is connected to and supported by the lower end boss 6a so as to be able to roll around a longitudinal axis x, and the main frame 7 is equipped with various mechanisms and structures for seeding described below.

  As shown in FIG. 9, a support column 8 is erected from the left and right sides of the main frame 7, and a horizontal frame 9 is installed across the upper and lower intermediate portions of the support column 8. Three hoppers 10 are supported in parallel. Each hopper 10 is configured in units of two strips, and a feeding mechanism 11 for two strips is provided at the lower part of each hopper 10.

  The feeding mechanism 11 includes a feeding case 12 that is connected to the lower end of the hopper 10, and a feeding roll (feeding rotary body) 13 that is rotatable around a horizontal axis so as to be pivotally supported inside the feeding mechanism 11. The feed drive shaft 14 and the support shaft 15 of the feed roll 13 which are horizontally and horizontally spanned are connected to each other via gears 16 and 17.

  An input shaft 18 is supported horizontally at the left and right intermediate portions of the main frame 7, and a crank mechanism 19 connected to the rear end of the input shaft 18 and a one-way clutch 20 are attached to the feeding drive shaft 14. The feeding arm 21 is interlocked and connected via a push-pull rod 22. When the input shaft 18 rotates once in a predetermined direction and the feeding arm 21 reciprocates up and down once, only the upward swing operation of the feeding arm 21 is transmitted to the feeding drive shaft 14 via the one-way clutch 20. The feeding drive shaft 14 is rotated by a predetermined angle in a predetermined direction (counterclockwise in FIG. 2), so that the feeding roll 13 is intermittently pitch-driven and rotated in a predetermined feeding direction (clockwise in FIG. 2). It has become. Work power derived from the riding vehicle 1 is transmitted to the input shaft 18 via the transmission shaft 23, and the input shaft 18 is rotationally driven at a speed synchronized with the traveling speed.

  A leveling float 26 is pivotally connected around the rear fulcrum a so that it can swing up and down within a predetermined range around the rear part of the support frame 25 that is fixed to the center and three places on the left and right of the main frame 7. Grooves 27 attached to each leveling float 26 one by one on the left side and the feeding mechanism 11 of each strip are connected in communication by a supply hose 28, and soot seeds (an example of a granular material) fed by the feeding mechanism 11 The vessel 27 is configured to be sown in a buried groove formed on the surface T.

  As shown in FIG. 3, eight feeding recesses 29 are formed on the outer periphery of the feeding roll 13 at a predetermined pitch (45 °) in the circumferential direction, and the feeding arm 21 is reciprocated up and down once. The lever ratio of the crank type transmission structure from the input shaft 18 to the feed drive shaft 14 is set so that the feed roll 13 is intermittently rotated by the formation pitch (45 °) of the feed recess.

  While the feeding arm 21 is swinging downward, the feeding roll 13 is stopped. In this stopped state, the entire preceding feeding recess 29 faces the discharge port 30 formed in the feeding case 12, and reaches the discharge port 30. The entire feeding recess 29 subsequent to the opened feeding recess 29 is set to be closed by the peripheral wall of the feeding case 12.

  According to this, every time the feeding roll 13 is rotated by one pitch, only one feeding recess 29 is opened to the discharge port 30, and intermittent feeding is performed by a predetermined amount, as shown in FIG. , Seed potato m will be sown together for one strain.

  The sowing apparatus 4 configured as described above is automatically controlled to move up and down following the field T. That is, out of the three leveling floats 26, the center leveling float 26 is used as a sensor float SF for detecting the height of the seeding device 4 with respect to the ground, and the first sensor S1 in which the vertical displacement of the front part of the sensor float SF is a potentiometer. Is detected and input to the control device 31 (see FIG. 16).

  As shown in FIG. 16, an electromagnetic control valve 32 for controlling the operation of the hydraulic cylinder 2 is connected to the control device 31 so that the electromagnetic control valve 32 operates based on the swing displacement of the sensor float SF. It has become. That is, when the seeding device 4 is in a predetermined height range with respect to the field surface T, the sensor float SF is in the set reference swinging posture, and in this state, the electromagnetic control valve 32 is held “neutral”. When the seeding device 4 starts to sink with respect to the surface T, the contact pressure acting on the sensor float SF increases and the sensor float SF swings upward around the rear fulcrum a, and this upward displacement is an allowable amount (dead zone). Is exceeded, the electromagnetic control valve 32 is switched to “up”. Further, when the seeding device 4 starts to rise with respect to the surface T, the ground pressure acting on the sensor float SF decreases, and the sensor float SF swings downward around the rear point a, and this downward displacement is an allowable amount. When (dead zone) is exceeded, the electromagnetic control valve 32 is switched to “down”. As a result, the sowing device 4 at the rear of the machine automatically maintains a predetermined height range with respect to the field surface T even when the riding machine 1 moves up and down by the unevenness of the tiller or tilts back and forth. The sowing depth is stabilized by the elevation control.

  A sensitivity setting unit 33 is connected to the control device 31 in order to artificially adjust the sensitivity of the elevation control. The sensitivity setting device 33 can set the reference swing posture of the sensor float SF when bringing the lift control neutral to seven levels. When the sensitivity setting device 33 is set to the display scale “4”, The reference swing posture of the sensor float SF is substantially horizontal in the front and rear directions, and the reference swing posture of the sensor float SF is changed to the front downward direction that makes it easier to detect a change in the ground pressure as the display scale is smaller. The reference swinging posture of the sensor float SF is changed in a forward upward direction that makes it difficult to detect fluctuations in the ground pressure. In other words, if the display scale is set to the smaller scale, the control sensitivity becomes sensitive, and if the display scale is set to the larger scale, the control sensitivity becomes insensitive. Adjust to “insensitive” side.

  As shown in FIG. 9, a pulley 38 that is rotationally driven by an electric motor 37 is disposed on the upper portion of the connecting frame 6, and a wire 39 that is connected to the pulley 38 and extends left and right serves as a spring 40. The whole seeding device 4 is pulled left and right via a spring 40 and tilted by rotating the pulley 38 forward and backward.

  An inclination sensor 41 is provided in the vicinity of the center of the main frame 7 to detect the inclination posture in the left-right direction of the seeding device 4, and when an inclination exceeding an allowable range based on the horizontal posture is detected, The electric motor 37 is controlled to operate in a direction to correct the inclination. As a result, even if the riding body 1 is tilted left and right due to unevenness of the tiller, etc., the sowing apparatus 4 is always maintained horizontally and sowing is performed at a uniform depth on each strip.

  The front end of the pair of left and right arms 7a extending forward from the center of the main frame 7 is equipped with a contact rubber 42. When the seeding device 4 is raised to the upper limit, the lifting link mechanism 3 By contacting each contact rubber 42 with the left and right lower links 3a from below, the seeding device 4 is forcibly fixed in a horizontal posture.

  As shown in FIG. 5 to FIG. 7, a covering soil member 43 for refilling the buried groove formed on the field surface T by the groove producing device 27 is provided for each strip on the bottom surface of each leveling float 26. The soil covering member 43 is configured to horizontally rotate around the vertical fulcrum b and adjust the soil covering function by changing the inclination angle with respect to the aircraft traveling direction, and the angular attitude is the detection result of the mud hardness detecting means. The automatic adjustment is based on the following.

  As shown in FIGS. 10 and 11, a swing arm 45 that can swing freely up and down around a fulcrum c is provided at the front end of the support arm 44 extending forward from the main frame 7. A disk 46 that enters the surface T is mounted on the free end of the swing arm 45 so as to be freely rotatable. A second sensor S2 using a potentiometer for detecting the vertical position of the disk 46 based on the swing displacement of the swing arm 45 is provided on the support arm 44.

  The information from the second sensor S2 indicates the vertical position of the disk 46 with respect to the seeding device 4, and the position information of the rice field T that can be determined based on the information from the first sensor S1 and the second sensor S2. The height position of the disk 46 with respect to the surface T, in other words, the amount of entry of the disk 46 into the surface T can be determined based on the information from the field T. The larger the amount of disk entry into the field T, the softer the mud in the field. It is determined that the mud in the field is harder as the amount of the disk entering the surface T is smaller. Based on the mud hardness thus detected, the soil covering function of the movable soil covering member 43 is automatically adjusted as follows.

  As shown in FIG. 7, an operation lever 47 that rotates integrally with the soil covering member 43 is connected around the vertical fulcrum b above the leveling float 26, and a spring 48 attached to the front end of the operation lever 47 is connected. The soil covering member 43 is energized in a posture along the forward direction of the machine body, that is, in a direction in which the soil covering function is lost, and the operation wire 49 connected to the rear end of the operation lever 47 is pulled to operate the soil covering member 43 as a spring. It is rocked in the direction crossing the aircraft forward direction against 48, that is, in the direction of enhancing the soil covering function. A drive operation mechanism 50 for operating the operation wire 49 is provided on the left and right stays 51 erected on the main frame 7.

  As shown in FIGS. 9 and 12, a sect gear 53 is connected to one end of a rotating shaft 52 laid across the left and right stays 51, and the sect gear 43 is driven by an electric motor 54 which is an example of an actuator. The operation wires 49 linked to the respective covering members 43 are connected to the six operation arms 56 projecting from the rotation shaft 52, and the pinion gear 55 is rotationally driven by the electric motor 54. Thus, the angle of each soil covering member 43 is adjusted to change the soil covering function.

  The movable soil covering member 43 is set so as to increase or decrease the soil covering function by changing the angle according to the mud hardness detected as described above, and detecting the angle of the rotating shaft 52 with the potentiometer 57. Thus, the attitude of the soil covering member 43 is detected and fed back.

  The reference angle of the soil covering member 43 is determined by adjusting the sensitivity setting unit 33 for artificially adjusting the sensitivity of the lifting control. When the control sensitivity is set to “sensitive” in a soft field, the soil covering member 43 is set. If the angle with respect to the aircraft traveling direction is set to be small and the soil covering function is reduced, and the control sensitivity is set to “insensitive” in a hard field, the angle with respect to the aircraft traveling direction of the soil covering member 43 is set to be large and the soil covering function is increased. It is done.

  As shown in FIG. 14, one of the six operating arms 56 provided on the rotary shaft 52 is formed long, and the tip of the long operating arm 56a and the front part of the sensor float SF are directed upward. The extended link 58 is linked and connected via the spring 59 and the wire 60, and the spring 59 is pulled and deformed as the detected mud hardness increases, and the force that elastically biases the link 58 downward increases. It is set to be. In other words, the harder the field, the higher the reference ground load of the sensor float SF at the time of control neutrality, and the control sensitivity becomes insensitive, and the stable elevation control that is less affected by the unevenness of the surface T is performed. The reference ground load of the sensor float SF at the control neutral time becomes smaller in the field, so that the control sensitivity becomes more sensitive, and the lifting control is performed in which unjust settlement is suppressed.

  The fertilizer applicator 5 is provided with a hopper 61 for storing powdered fertilizer at the rear part of the driver seat 24 in the passenger traveling machine body 1, and the fertilizer fed by a rotary feed mechanism 62 provided at the lower portion thereof is used as an electric blower. It is configured to be transported by wind by the air from 63 and to be supplied to the grooving device 65 provided to each leveling float 26 via the supply hose 64, and the feeding mechanism 62 is driven by the traveling system power. It has become. A soil covering member 66 for refilling the fertilizer embedding groove formed on the field surface T is fixedly installed on the bottom surface of the leveling float 26.

  As shown in the control block diagram of FIG. 15, the hopper 10 of the seeding device 4 and the hopper 61 of the fertilizer application device 5 are each provided with a remaining culm sensor 67 and a remaining fertilizer sensor 68, and a burial groove is formed. A groove clogging sensor 70 and a fertilizer clogging sensor 71 are attached to the groove forming apparatus 27 and the groove forming apparatus 65 forming the fertilizer embedding groove, respectively, and are connected to the control device 31, so When it is detected by the amount sensor 68 that the seed hopper or fertilizer in the hopper is low, or when the clogging or fertilizer clogging is detected, the alarm lamp 72 is turned on and the alarm buzzer 73 sounds. The driver is encouraged to replenish seeds and fertilizers or to remove clogs. The detection circuit on the sensor side is provided with an interlocking changeover switch 74. When only sowing work is performed without fertilization, the fertilizer is removed by switching the changeover switch 74 to the open circuit state. An unnecessary alarm is prevented from being output based on information from the remaining amount sensor 68 and the fertilizer clogging sensor 71 of the hopper 61 that has been emptied.

  17 and 18 show a mode in which a seedling planting device 80 is connected in place of the seeding device 4 and a power spreading device 84 driven by engine power is attached to the front end of the riding traveling machine body 1. . In this case, rice bran is stored instead of fertilizer in the hopper 61 of the fertilizer application device 5 disposed at the rear of the machine body, and the rice bran fed by the feeding mechanism 62 is sprayed on the rice field T behind the machine body via the supply hose 64. By covering the surface T with rice bran and shading it, weeds can be prevented from growing. By extending the supply hose 64 to the rear end of the seedling planting apparatus 80 and supporting it on a stay 82 made of a square pipe connected and stretched across the rear end of the planting case 81 arranged side by side, the leveling float 83 is formed. Rice bran can be sprinkled on the quiet rice field T after passing, and the rice bran can be diffused widely on the rice field T without being buried in the mud flow. The power spreader 84 spreads and spreads fertilizer or, if necessary, spreads and spreads fertilizer and chemicals.

  FIG. 19 shows a usage pattern in which a weeding device 90 is connected in place of the seeding device 4. This weeding device 90 includes a weeding rotor 92 that is equipped with radial weeding claws 91 in parallel on the left and right sides and is driven to rotate around a horizontal axis, and a reciprocating weeding unit that reciprocates a weeding tine 93 made of a wire material left and right with a small stroke. 94, the weeds that grow between the left and right strips of the planting seedling F are scraped and removed by the weeding claws 91, and the weeds that grow between the front and rear planting seedlings F are scraped and removed by the weeding tine 93. Has been.

  Above the weeding rotor 92, a horizontally long upper cover 95 that prevents mud from scattering is disposed, and a square pipe stay 96 that is horizontally connected to the rear end of the upper cover 95 is connected to the fertilizer application device 5. The supply hose 64 is extended and connected and supported. Rice bran is stored in the fertilizer hopper 61 of the fertilizer application machine 5 instead of fertilizer, and the rice bran fed by the feeding mechanism 62 is sprayed to the rice field T behind the machine body through the supply hose 64, and the rice field T is covered with the rice bran to shield it. By doing so, weeds can be prevented from growing.

  [Other Examples]

  (1) As shown in FIG. 16, a speed sensor VS that detects the traveling speed of the riding vehicle 1 is connected to the control device 31, and the angle of the covering soil member 43 with respect to the aircraft traveling direction decreases as the vehicle traveling speed increases. In addition, the soil covering function can be automatically controlled in accordance with the variation in the airframe traveling speed so that the angle of the soil covering member 43 with respect to the airframe traveling direction increases as the airframe traveling speed decreases.

According to this configuration, the mud pushing function by the soil covering member 43 increases as the airframe traveling speed increases. Therefore, by reducing the angle of the soil covering member 43 with respect to the airframe traveling direction as the airframe traveling speed increases, an excessive amount by the soil covering member 43 is obtained. Mud push can be suppressed. Accordingly, it is possible to prevent the soil from being agitated by excessive mud pushing by the soil covering member 43, to prevent the buried soot from flowing with the mud, and to stably maintain the intermittent sowing pattern with a predetermined pitch.
As the speed sensor VS, a pulse sensor that directly measures the rotational speed of the axle, a potentiometer or a limit switch that detects the operation position of the shift lever that changes the vehicle traveling speed can be used.

  As shown in FIG. 16, when only sowing work is performed without applying fertilizer, an unnecessary alarm is output with information from the fertilizer remaining amount sensor 68 and the fertilizer clogging sensor 71 of the hopper 61 that has been emptied by removing the fertilizer. As a means for preventing this, a fertilization work switch 75 connected to the control device 31 is provided, and from the on / off information of this fertilization work switch 75, it is recognized whether the sowing work with fertilization or the sole work of sowing alone, sowing alone It is also possible to program and implement such that information from the fertilizer remaining amount sensor 68 and the fertilizer clogging sensor 71 is ignored during the work.

  (2) The feeding mechanism 11 is a feeding hole (feeding recess) formed at an equal pitch in the circumferential direction of the eyeplate by intermittently rotating a disc-shaped eyeplate (feeding rotary body) about the longitudinal axis. It is also possible to use a specification that performs metering feeding by a predetermined amount.

  (4) In the above-described embodiment applied to the seeding device 4, seed meal is used as the powdered material to be fed, but it is applied to a device that spreads the powdery material such as fertilizer and chemicals to the paddy field. You can also.

Whole side view of paddy direct sowing machine Side view of seeding device Vertical side view showing the feeding mechanism of the seeding device Plan view showing sowing condition Partial cutaway side view showing the main part of the seeding device Plan view showing the main part of the seeding device Perspective view showing the sowing part of the sowing device Schematic plan view of sowing equipment Rear view of seeding device Side view of mud hardness detection structure Top view of mud hardness detection structure Rear view showing the entire drive operation mechanism of the soil covering member View along arrow II in FIG. FIG. 12 is a view taken from the direction of arrows (b) and a view taken from arrows (c). Control block diagram Control block diagram in another embodiment Side view of seedling planting device in working mode with seedling planting specifications Plan view showing leveling part of seedling planting device Side view of weeding device in working mode with weeding specifications

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Hopper 11 Feeding mechanism 12 Feeding case 13 Feeding rotary body (feeding roll)
29 Feeding recess 30 Discharge port 43 Soil covering member 54 Actuator (electric motor)
T

Claims (4)

In a paddy field work machine configured to feed powder particles stored in a hopper by a predetermined amount by a rotary feed mechanism, and supply and bury them in a buried groove formed on a rice field as the machine travels,
The feeding rotary body provided in the feeding mechanism is configured to intermittently rotate in a fixed direction at a predetermined angle, and the intermittent rotation pitch of the feeding rotary body and the circumferential pitch of the feeding recesses formed in the feeding rotary body are determined. In the stop state of the feeding rotating body, the entire preceding feeding recess faces the discharge port formed in the feeding case, and the entire feeding recess following the feeding recess is closed by the peripheral wall of the feeding case. Paddy field work machine characterized by being.   A cover member for refilling the buried groove is provided so that the angle of the cover member can be adjusted with respect to the aircraft traveling direction, and an actuator for adjusting the angle of the soil covering member is automatically operated in response to fluctuations in the vehicle traveling speed. The paddy field machine according to claim 1.   A soil covering member for refilling the buried groove is equipped so that the angle can be adjusted with respect to the aircraft traveling direction, and an actuator for adjusting the angle of the soil covering member corresponds to the variation in the mud hardness detected by the mud hardness detecting means. The paddy field machine according to claim 1 or 2, further comprising control means for automatically operating. The paddy field machine according to claim 2 or 3, further comprising setting means for artificially adjusting and setting a reference angle of the soil covering member.

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