JPH0613485U - Liquid sprayer for rice transplanter - Google Patents

Abstract

(57) [Summary] [Purpose] In the rice transplanter 10 equipped with the liquid agent spraying device 38, it is possible to check the spraying of the liquid agent 47 from the nozzle 68 at any time without removing the seedlings from the seedling platform 28. . [Configuration] The nozzle 68 ejects the liquid agent 47 intermittently sent from the piston pump 60 to the paddy field 32. Auxiliary crank
94 receives rotational power from the engine 168 and drives the planting claw 34 to rotate. The double-arm lever 70 is capable of reciprocating swinging around the pin 74, and reciprocally swings to reciprocate the piston rod 120 of the piston pump 60 via the horizontal link 86. The vertical link 84 is detachably connected to the arm portion 76 of the double-arm lever 70, and reciprocally swings the double-arm lever 70 by the rotational movement of the auxiliary crank 94. Nozzle 68 before spraying liquid 47
When the ejection of the liquid agent 47 from is checked, the connection between the arm portion 76 and the vertical link 84 is released, and the double arm lever 70 is manually reciprocally rocked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a spraying device that is installed in a rice transplanter and sprays a liquid agent onto a paddy field, and more specifically, a liquid spraying device for a rice transplanter that can efficiently check the liquid agent spray from a nozzle before the liquid agent spraying work. It is about.

[0002]

[Prior art]

 Rice transplanters are expensive, so it is desirable to use them in addition to rice transplantation to improve their efficiency. In addition, spraying liquid fertilizer and herbicides at the same time as rice planting improves work efficiency. Therefore, the microfilm of Japanese Patent Application No. 2-97234 and drawings (Japanese Utility Model Publication No. 4-55211) is equipped with a liquid spraying device on a rice transplanter, and the rice sprayer performs the liquid spraying work in parallel with the rice transplanting work. Disclose what to do. In the embodiment of the liquid spraying device for rice transplanter, the pump is connected to the auxiliary crank of the planting pawl via the link mechanism, and it is difficult to operate the pump independently of the planting pawl.

[0003]

[Problems to be solved by the device]

 Liquids such as herbicides are usually concentrated liquids, which are liable to solidify early when they come into contact with air, so that the pipeline is easily clogged, and air may be mixed in the pipes. Prior to starting or resuming, it is necessary to check beforehand whether the liquid is properly sprayed from the nozzle.

In the liquid spraying device for rice transplanters of the embodiment of the specification of Japanese Patent Application No. 2-97234 and the drawings, when the pump is operated, the planting claws are also operated. It is necessary to remove the seedlings from the stand, which makes checking work complicated.

An object of the present invention is to provide a liquid agent spraying device for a rice transplanter capable of performing a liquid agent spraying check from a nozzle at any time without removing the seedlings from the seedling placing table.

[0006]

[Means for Solving the Problems]

 The invention will be described using the reference numerals of the drawings corresponding to the embodiments. The rice transplanter (10), which is the premise of the present invention, has a planting claw (34) that is rotationally driven to plant a seedling in a paddy field (32). The rice sprayer liquid agent spraying device (38) of the present invention has the following components (a) to (d). (A) Reciprocating pump (60) that sucks in and discharges the liquid agent (47) by increasing and decreasing the volume of the pump chamber due to the reciprocating movement of the reciprocating member (120) (b) Liquid agent that is pumped from this reciprocating pump (60) ( Reciprocating rocking member (70) for connecting the nozzle (68) (c) to the paddy field (32) and connecting it to the reciprocating member (120) to reciprocate the reciprocating member (120) as it reciprocates. (D) A driving member (84) which is removably connected to the reciprocating oscillating member (70) and oscillates the reciprocating oscillating member (70) reciprocally as the planting claw (34) rotates.

[0007]

[Action]

 In the spray check of the liquid agent (47) from the nozzle (68) prior to the spraying operation of the liquid agent (47), the connection between the reciprocating rocking member (70) and the driving member (84) is disconnected. As a result, the reciprocating swing member (70) can be operated independently of the operation of the planting claw (34). The operator operates the reciprocating oscillating member (70) so that the reciprocating oscillating member (70) oscillates reciprocally. As a result, the reciprocating member (120) of the reciprocating pump (60) is reciprocally moved by the reciprocating rocking of the reciprocating rocking member (70) and reciprocates to increase or decrease the volume of the pump chamber. As a result, the liquid agent (47) is sent to the nozzle (68) by the reciprocating pump (60) and ejected from the nozzle (68) to the reciprocating rocking member (70).

In the spraying operation of the liquid agent (47), the reciprocating rocking member (70) and the driving member (84) are connected. Rotational power is transmitted to the planting claw (34) to rotationally drive the planting claw (34), and the planting claw (34) plant the seedlings in the paddy field. The drive member (84) reciprocally rocks the reciprocating rocking member (70) as the planting claw (34) rotates. The reciprocating member (120) of the reciprocating pump (60) reciprocates as the reciprocating oscillating member (70) oscillates to increase or decrease the pump chamber volume. As a result, the liquid agent (47) is pressure-fed to the nozzle (68) by the reciprocating pump (60) and sprayed from the nozzle (68) to the reciprocating rocking member (70).

[0009]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 10 is a schematic side view of the rice transplanter 10 and the liquid agent spraying device 38 provided therein. The rice transplanter 10 has a bogie 12 traveling on the paddy field 32, and a planting device 14 which is detachably and vertically movable by being attached to the rear portion of the bogie 12 via a link. In the dolly 12, the driver's seat 16 is provided with a steering wheel 18 and a seat 20 facing the steering wheel 18, and the rotational force of the engine 168 (FIG. 11) is driven by the driving operation of the operator in the driver's seat 16. It is transmitted to the front wheels 24 and the rear wheels 26 via the clutch 172 (FIG. 11) and the transmission 22 so that the carriage 12 can travel. In the planting device 14, seedlings (not shown) are placed in multiple rows in the left-right direction on a seedling placement table 28 that is inclined forward and upward, and the floats 30 float on the surface of the paddy field 32. The planting device 14 is held at a height corresponding to the water surface of the paddy field 32. The planting claw 34 receives power from the transmission 22 of the dolly 12 via the PTO shaft 36, and is synchronized with the rotation of the engine 168, and thus the rotation of the front wheels 24 and the rear wheels 26. Grab the seedlings from and plant them in the paddy field 32. The liquid agent spraying device 38 has a frame 40 that extends in the left-right horizontal direction and is detachably attached to the rear part of the planting device 14.

FIGS. 1, 3 and 4 are a rear view, a right side view and a left side view of the liquid agent spraying device 38. The base plate 42 is fixed to the upper surface of the frame 40 at the front end, and the tank mounting base 44 is a box-like shape that opens in the front-back direction of the rice transplanter 10, and is fixed to the base plate 42 at the lower ends of the left and right side wall parts. The liquid agent tank 46 is charged with the liquid agent 47 into the inside through the upper opening port opened and closed by the lid 48, and stores the liquid agent 47. The liquid agent tank 46 is placed on the upper surface of the tank mount 44, and a plate-like portion 50 extending in the left-right direction of the rice transplanter 10 is provided at the lower portion of the left and right side wall portions. The L-shaped stay 52 is fixed to the upper surface of the tank mount 44 and is applied to the plate-shaped portion 50. The bolt 54 is inserted through the plate portion 50 and the stay 52, fitted with a spring washer 56, and finally screwed with a nut 58 to fix the plate portion 50 to the stay 52. The piston pump 60 is placed on the base plate 42 and fixed to the base plate 42 via stays 62 at the lower front and rear ends. The suction pipe line 64 connects the lower part of the liquid agent tank 46 to the suction port 146 of the piston pump 60, the discharge pipe line 66 is connected to the discharge port 148 of the piston pump 60, and projects rearward from the rear end of the base plate 42. A nozzle 68 is attached at the tip.

The dual arm lever 70 is rotatably supported by a stay 72 fixed to the frame 40 via a pin 74, and an arm portion 76 protruding horizontally from the pin 74 and an upper portion protruding from the pin 74. Arm portion 78 and. The grip 80 is fitted and fixed on the upper end of the arm portion 78, and is gripped by an operator. The knob nut 82 is arranged at a connecting portion between the tip of the arm portion 76 and the upper end of the vertical link 84. The horizontal link 86 extends substantially in the horizontal direction and is rotatably connected to the middle portion of the arm portion 78 and the upper end portion of the pump lever 92 via pins 88 and 90, respectively.

FIG. 2 shows a connection structure between the planting claw 34 and the vertical link 84. In FIGS. 1 and 2, the auxiliary crank 94 is rotatable around the rotation center 95. The planting claws 34 are arranged at both ends of the auxiliary crank 94, and the bolts 96 are inserted into the spring washers 98 and the ends of the auxiliary crank 94 in order and then screwed to the planting claws 34. . The axial protrusion at the lower end of the vertical link 84 is inserted into a part of the auxiliary crank 94 distant from the center of rotation 95, then inserted into the spring washer 100, and further, the nut 102 is screwed to the auxiliary crank 94. Is rotatably connected to.

FIGS. 5 and 6 are a side view and a cross-sectional view of a portion of the knob nut 82 shown in FIG. The universal joint 104 has a ball portion 106 fitted to the upper end portion of the vertical link 84, an elliptical portion 108 projecting from the upper end portion of the vertical link 84, and a screw shaft 110 further projecting from the elliptical portion 108. . The rectangular plate 112 is fixed to the surface of the end portion of the arm portion 76 on the vertical link 84 side, and is fitted into the elliptical portion 108 in the elliptical hole 114. The knob nut 82 is screwed onto the screw shaft 110 to prevent the arm portion 76 from coming off the screw shaft 110. The universal joint 104 connects the vertical link 84 and the arm portion 76 of the double-arm lever 70 rotatably in an arbitrary rotational direction by relative rotation with the vertical link 84 in the ball portion 106.

FIG. 7 is a view of the upper end of the vertical link 84 seen from the arm portion 76 side of the pin 74, and FIG. 8 is a view of the tip of the arm portion 76 of the dual arm lever 70 seen from the vertical link 84 side. is there. The screw shaft 110 of the universal joint 104 and the elliptical hole 114 of the rectangular plate 112 have the same shape, and the elliptical portion 108 fits into the elliptical hole 114 of the rectangular plate 112. By fitting the elliptical portion 108 into the elliptical hole 114, the screw shaft 110 is rotationally fixed to the arm portion 76 of the double-arm lever 70 via the elliptical portion 108 and the elliptical hole 114, and the knob nut 82 is fixed to the screw shaft 110. At the time of screwing the spring washer 100 with the ball joint 106 of the universal joint 104, the spring washer 100 is prevented from entraining and the screwing can be smoothly performed.

FIG. 9 is a structural diagram of the piston pump 60. The cylinder 116 is joined to the discharge port member 118 at the tip end side, and the piston rod 120 projects into the cylinder 116 on the tip end side from the seal 122 while slidingly contacting with the seal 122. The pump lever 92 is pivotally supported around a fulcrum 124 and is rotatably connected to the horizontal link 86 and the piston rod 120 via pins 90 and 126 at the upper and lower ends, respectively. The valve body 128 and the stopper 130 with the through hole are fixed to the tip end portion of the piston rod 120 with a space so that the stopper 130 with the through hole is on the tip side of the valve body 128. The valve seat 132 is loosely fitted to the piston rod 120 between the valve body 128 and the stopper 130 with a through hole, and the piston packing 134 is fitted to the outer circumference of the valve seat 132 and slides on the inner circumference of the cylinder 116. Contact. The valve body 128 and the valve seat 132 form a suction valve 136, and the pump chamber 137 is formed inside the cylinder 116 on the tip side of the piston rod 120. The discharge valve 138 includes a valve seat 140 having a peripheral edge sandwiched at a joint between the cylinder 116 and the discharge port member 118, a valve body 142 seated on the valve seat 140 from a side opposite to the pump chamber 137, and a valve body. And a compression coil spring 144 that presses 142 against the valve seat 140. The suction port 146 is formed in the cylinder 116 so as to face the inside of the cylinder 116 on the proximal side of the suction valve 136, and the discharge port 148 is formed in the discharge port member 118.

When the pump lever 92 swings back and forth around the fulcrum 124, the piston rod 120 reciprocates, and the volume of the pump chamber 137 increases or decreases accordingly. In the intake stroke in which the piston rod 120 retracts toward the base end side, the valve seat 132 contacts the stopper 130 with the through hole, the intake valve 136 opens, and the discharge valve 138 closes. The liquid agent 47 flows into the pump chamber 137 through the suction valve 136 and the through hole of the stopper 130 with the through hole. On the other hand, in the discharge stroke in which the piston rod 120 is directed toward the pump chamber 137, the valve seat 132 contacts the valve body 128, the suction valve 136 is closed, and the discharge valve 138 is opened. As a result, the liquid agent 47 in the pump chamber 137 is discharged to the discharge port 148 via the discharge valve 138.

FIG. 11 is a configuration diagram of a power transmission system in the rice transplanter 10. Rotational power of the engine 168 is transmitted to the transmission 22 via a traveling clutch 172 that is engaged and disengaged by a manual operation of a clutch lever 170, and the transmission 22 is further transmitted to a front differential device 174 and a propeller shaft 176. It is transmitted via the rear differential device 178 via the front differential device 174 and the rear differential device 178 to the left and right front wheels 24 and the rear wheels 26. The output of the transmission 22 is also transmitted to the PTO shaft 36 via the planted clutch 179.

FIG. 12 is a configuration diagram of a power transmission system in the liquid agent spraying device 38. The distribution shaft 180 extends horizontally in the left-right direction and receives rotational power via the rear end of the PTO shaft 36. The plurality of planted rotary cranks 182 are arranged at equal intervals in the left-right direction, the planting claws 34 are attached to the peripheral portion, and are rotated by the rotational power distributed from the distribution shaft 180. The auxiliary crank 94 is attached to the leftmost planted rotary crank 182 and rotates integrally with the planted rotary crank 182. The vertical link 84 displaces the upper end side in a substantially vertical direction as the auxiliary crank 94 rotates, and reciprocally swings the double-arm lever 70 around the pin 74. The reciprocal swing of the double-arm lever 70 is transmitted to the pump lever 92 of the piston pump 60 via the horizontal link 86, and the pump lever 92 is swung back and forth to drive the piston pump 60.

The operation of the embodiment will be described. Prior to the spraying of the liquid agent 47, in the spray check of the liquid agent 47 from the nozzle 68, the knob nut 82 is separated from the screw shaft 110 of the universal joint 104, and the arm portion 76 of the double-arm lever 70 and the rectangular plate 112 are screwed. The connection between the universal joint 104 and the arm portion 76 is released by disconnecting from the 110 and the elliptical portion 108. As a result, the double arm lever 70 can be operated independently of the operation of the planting pawl 34. The operator grips the grip 80 of the double-arm lever 70 and reciprocally swings the arm portion 78 of the double-arm lever 70 left and right. This reciprocating swing is transmitted to the pump lever 92 via the horizontal link 86, and causes the pump lever 92 to swing back and forth around the fulcrum 124. As a result, the piston rod 120 of the piston pump 60 reciprocates, the piston pump 60 operates, and the liquid agent 47 in the liquid agent tank 46 is sucked and discharged by the piston pump 60 and ejected from the nozzle 68.

In spraying the liquid agent 47, the elliptical portion 108 of the universal joint 104 is fitted into the elliptical hole 114 of the rectangular plate 112, and the screw shaft 110 of the universal joint 104 is inserted into the arm portion 76 of the double-arm lever 70. Further, the knob nut 82 is screwed onto the screw shaft 110. As a result, the upper end of the vertical link 84 and the tip of the arm portion 76 of the double-arm lever 70 are rotatably connected via the universal joint 104. On the other hand, in order to drive the rice transplanter 10, the engine 168 is driven, and the rotational power of the engine 168 is transmitted to the front wheels 24 and the rear wheels 26 on the one hand to move the truck 12 forward, and on the other hand, the PTO shaft 36 and It is transmitted to each planted rotary crank 182 via the distribution shaft 180 and drives the planted claw 34. Since the front wheel 24 and the rear wheel 26 and the planting pawl 34 are transmitted with the rotational power from the speed changer 22, the operation of the planting pawl 34 is synchronized with the rotation of the front wheel 24 and the rear wheel 26. The planting claws 34 grab the seedlings on the seedling placing table 28 and plant them in the paddy field 32 as the planting rotary crank 182 rotates.

The auxiliary crank 94 rotates around the rotation center 95 along with the rotation of the planted rotation crank 182, and accordingly, the vertical link 84 rotates around the rotation center 95 at a predetermined half diameter at the lower end, It moves up and down at the upper end to reciprocally swing the double-arm lever 70 around the pin 74. The reciprocating swing of the double arm lever 70 is transmitted to the pump lever 92 of the piston pump 60 via the horizontal link 86, and the pump lever 92 swings reciprocally around the fulcrum 124 to reciprocate the piston rod 120. As a result, if there is no abnormality in the flow system of the liquid agent 47, the liquid agent 47 in the liquid agent tank 46 is sucked and discharged by the piston pump 60 by the suction / discharge cycle of the piston pump 60, and discharged from the nozzle 68 of the piston pump 60. It is injected intermittently according to the discharge cycle.

In the illustrated embodiment, the auxiliary crank 94 receives power from the planted rotary crank 182, but it is also possible to take out power from a location upstream of the planted rotary crank 182. is there.

[0023]

[Effect of device]

 In this invention, the reciprocating pump that pressure-feeds the nozzle to the liquid agent is driven by transmitting the reciprocating oscillating motion of the reciprocating oscillating member to the reciprocating member, and the drive member moves back and forth as the planting claw rotates. It is detachably connected to the reciprocating rocking member so as to rock the member back and forth. Therefore, when checking the liquid agent spraying from the nozzle prior to the liquid agent spraying work, the operator releases the connection between the reciprocating rocking member and the driving member and operates the reciprocating rocking member to reciprocate the rocking motion. , The reciprocating pump can be operated without activating the planting claw to check the spraying of the liquid agent from the nozzle. Therefore, the labor of removing the seedlings from the seedling placing table can be omitted, and the efficiency of check work can be improved.

[Brief description of drawings]

FIG. 1 is a rear view of a liquid agent spraying device.

FIG. 2 is a diagram showing a connection structure between a planting claw and a vertical link.

FIG. 3 is a right side view of the liquid agent spraying device.

FIG. 4 is a left side view of the liquid agent spraying device.

5 is a side view of a portion of the knob nut of FIG. 1. FIG.

6 is a cross-sectional view of a portion of the knob nut of FIG.

FIG. 7 is a view of the upper end portion of the vertical link as viewed from the arm portion side of the pin.

FIG. 8 is a diagram of a tip end portion of an arm portion of a dual-arm lever, as viewed from the vertical link side.

FIG. 9 is a structural diagram of a piston pump.

FIG. 10 is a schematic side view of a rice transplanter and a liquid agent spraying device provided therein.

FIG. 11 is a configuration diagram of a power transmission system in the rice transplanter.

FIG. 12 is a configuration diagram of a power transmission system in the liquid agent spraying device.

[Explanation of symbols]

 10 Rice transplanter 32 Paddy field 34 Claw with planting 38 Liquid agent spraying device 47 Liquid agent 60 Piston pump (reciprocating pump) 68 Nozzle 70 Double arm lever (reciprocating rocking member) 84 Vertical link (driving member) 120 Piston rod (reciprocating member)

Claims (1)

[Scope of utility model registration request] 1. In a rice transplanter (10) having a planting claw (34) which is rotationally driven to plant a seedling in a paddy field (32), a pump chamber volume is increased or decreased by reciprocating motion of a reciprocating member (120). A reciprocating pump (60) for inhaling and discharging the liquid agent (47) by means of the nozzle (68) for spraying the liquid agent (47) pumped from the reciprocating pump (60) to the paddy field (32), and the reciprocating motion. A reciprocating oscillating member (70) that is connected to the member (120) and reciprocates the reciprocating member (120) with reciprocating oscillating, and is removably connected to the reciprocating oscillating member (70) and is attached to the plant. A liquid spraying device for rice transplanters, comprising: a drive member (84) that reciprocally rocks the reciprocating rocking member (70) in accordance with the rotation of the claw (34).