JP3726838B2 - Fertilizer applicator - Google Patents

Description

  The present invention belongs to the technical field of fertilizer applicators.

The fertilizer storage section for storing the fertilizer, the feeding section for feeding the fertilizer in the fertilizer storage section, the connecting pipe to which the fertilizer fed in the feeding section is supplied via the funnel section , and the wind blown from the air chamber are fertilizer in its wind supplied via the connection pipe and a fertilization conduit that will be conveyed fertilizer machine is known (see Patent Document 1.).
JP-A-5-276818

  In the fertilizer applicator, there is a possibility that the fertilizer fed out by the feeding unit may be clogged by the funnel unit.

In order to solve the above problems, the present invention has the following configuration. That is, a fertilizer storage section that stores fertilizer, a feeding section that feeds out the fertilizer in the fertilizer storage section, a connection pipe to which the fertilizer fed out from the feeding section is supplied via the funnel section , and an air blown from the air chamber in There fertilization machine fertilizer at that wind is supplied via the connecting tube and a fertilization conduit that will be conveyed, of the funnel part is rotated by the wind blown out from the air chamber into the blade of the connecting tube strikes It was set as the fertilizer machine which provided the cleaning brush of the structure which drops the fertilizer powder adhering to the inner wall .

In the fertilizer applicator of the present invention, the fertilizer in the fertilizer storage unit is fed out by the feeding unit, the fertilizer fed out by the feeding unit is supplied to the connection pipe through the funnel part, and the wind blown from the air chamber passes through the connection pipe . The fertilizer is conveyed in the fertilization conduit by being supplied via the fertilizer, and the fertilizer is guided to the field by the fertilization conduit and fertilized. And it can prevent that a cleaning brush rotates in a funnel part by the wind which blows off from the air chamber to the blade | wing in a connection pipe , and a manure clogging arises in the funnel part where the fertilizer fed out is collected.

  1 and 2 show a riding rice transplanter provided with the fertilizer applicator. In this riding rice transplanter 1, a planting work machine 4 is mounted on an elevating link device 3 provided at the rear part of the traveling vehicle body 2, and a fertilizer machine 5 is further provided on the rear upper side of the traveling vehicle body 2.

  The traveling vehicle body 2 is a four-wheel vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11. A mission case 12 is arranged at the front of the aircraft, front wheel axle frames 13 and 13 extend from the left and right side portions of the mission case to the left and right sides, and front wheel final cases 14 and 14 are provided at the ends thereof. . Front wheel support cases 15 and 15 are provided below the front wheel final cases 14 and 14 so as to be able to change the direction, and the front wheels 10 and 10 are attached to front wheel axles 10a and 10a that project laterally from the outer side thereof. In addition, a front end portion of a pair of left and right vertical frames 17 and 17 is fixed to the rear surface portion of the mission case 12, and a horizontal frame 18 is fixed to the rear end portions of the vertical frames 17 and 17. Then, a rear wheel rolling shaft 19 having a shaft center oriented in the front-rear and horizontal directions is fitted in a fixed state to the left and right central portions of the horizontal frame 18, and the rear wheel frame 20 is supported by the projecting portion of the rear wheel rolling shaft in a freely rolling manner. ing. Rear wheel gear cases 21, 21 are provided at the left and right ends of the rear wheel frame 20, and the rear wheels 11, 11 are attached to rear wheel axles 11 a, 11 a that project laterally from the outer side thereof. The rear-wheel drive power in the transmission case 12 is transmitted to the rear-wheel gear cases 21 and 21 via the rear-wheel drive shafts 23 and 23 that can be expanded and contracted.

  The engine 30 is provided on the vertical frames 17 and 17. The rotational power of the engine output shaft 30a is once transmitted to the hydraulic pump 32 by the first belt transmission device 31, and further transmitted to the transmission case 12 by the continuously variable second belt transmission device 33. Further, the alternator 35 mounted on the engine 30 is transmitted by the third belt transmission device 36 from the second engine output shaft 30b.

  A handle 40 that steers the front wheels 10, 10 is provided at a front position on the upper part of the body, and a seat 42 is installed on an engine cover 41 that covers the upper side of the engine 10. A lower portion of the handle 40 is covered with a steering post cover 44, and a display panel 43 for displaying various operating states is provided on the upper portion thereof.

  Around the engine cover 41 and the steering post cover 44 is a horizontal floor step 45 that allows the operator to walk freely. The rear portion 45a of the floor step 45 is raised so as not to interfere with the rear wheels 11, 11. Further, on the lower side of the left and right side portions of the floor step 45, lifting steps 47, 47 used when getting on and off the floor from the left and right sides of the body are provided. It is also possible to get on and off the main floor 45 directly from the front side of the aircraft.

  In addition, shelf-shaped spare seedling frames 48 and 48 on which spare seedlings are placed are provided on the left and right sides of the machine body. The preliminary seedling frames 48, 48 are swung into a working state expanded laterally as shown in the drawing and a retracted state folded back.

  The elevating link device 3 includes an upper link 51 and a lower link 52, 52 that are rotatably attached to a link base frame 50 that is fixed to the rear ends of the vertical frames 17, 17. A vertical link 53 is connected to the rear end. Then, a connecting shaft 54 fixed to the planting work machine side is rotatably inserted and connected to a bearing part protruding rearward from the lower end of the vertical link 53, and the planting work machine 4 rotates to the left and right with respect to the traveling direction. Can be installed freely. The hydraulic cylinder 56 for driving the lifting / lowering link device is pivotally supported by a support member (not shown) whose base side is fixed to the vertical frames 17 and 17, and a swing arm whose piston rod side is provided integrally with the base of the upper link 51. The lower end of 57 is connected. When the hydraulic cylinder 56 is expanded and contracted, the lifting / lowering link device 3 is lifted / lowered, and the planting work machine 4 is lifted / lowered with a fixed posture. The hydraulic cylinder 56 is switched and controlled by a hydraulic valve 58 provided in the planting machine 4.

  The raising / lowering operation of the planting work machine 4 is performed by a hydraulic / planting lever 59 provided on the side of the cockpit 42 (see FIG. 8). This hydraulic / planting lever 59 has operating positions of “planting machine up”, “planting machine fixed”, “planting machine down”, and “planting clutch engaged”. If the operation is "Raised planting machine", the planting machine 4 is lifted. If "Fixed planting machine" is operated, the planting machine 4 is fixed in the raised position. When the work machine 4 is lowered and “planting clutch engaged” is operated, the planting work machine 4 enters the up-and-down control state, and the planting clutch enters and each part of the planting work machine 4 operates.

  The planting work machine 4 includes a transmission case 60 that also serves as a frame, a seedling stage 61 on which seedlings are placed, a total of eight planting devices 62 that plant seedlings on the seedling stage in a field scene, etc. I have. The traveling vehicle body 2 is transmitted from the transmission case 10 to the transmission case 60 via a first planting transmission shaft 64, a planting clutch case 65, and a second planting transmission shaft 66. In the planting clutch case 65, a planting clutch for turning on and off transmission to the planting work machine 4 is incorporated.

  The seedling stage 61 is provided so as to be inclined so that the front side is higher, and is slidable left and right. The seedling placing table 61 is divided into seedling placing parts corresponding to the number of planting strips, and seedling feeding belts 68 for feeding the seedlings downward are provided for each seedling placing part. In addition, a seedling receiving plate 70 in which a seedling opening is formed corresponding to the planting devices 62,... The seedling stage 61 is reciprocated left and right by the lateral feed mechanism in the transmission case 60, and the seedlings located at the lowest stage on the seedling stage are sequentially supplied to the seedling outlet. When all the seedlings for one horizontal row are supplied to the seedling outlet, the seedling feeding belts 68, ... are actuated to feed the seedlings downward.

  The planting device 62 includes a rotating case 72 that rotates about a horizontal axis, and a pair of planting baskets 73 and 73 attached to the rotating case. When the rotary case 72 rotates, the planting baskets 73 and 73 rotate in the direction opposite to the rotation direction of the rotary case 72, and the tip of the fork-shaped seedling separation claw fixed to the planting basket is deformed up and down in a closed elliptical locus. Operates to draw. As a result, the seedling separation claw separates and holds the seedling supplied to the seedling outlet of the seedling mount 61 and plantes it in the field scene.

  A center float 75 and a pair of left and right side floats 76 and 76 are provided at the bottom of the planting work machine 4. In the state where each float is in contact with the mud surface, a part of the weight of the aircraft is received by this contact portion. In addition, when the aircraft is advanced with each float in contact with the ground, the float slides while leveling the mud surface. The center float 75 is provided in a shape for leveling the planting positions of the central two strips, and the left and right side floats 76 and 76 are provided in a shape for leveling the planting positions of the left and right three strips.

  The center float 75 is also a sensor for detecting unevenness in a farm scene. When the hydraulic / planting clutch lever 59 is operated to “planting clutch engaged”, the hydraulic valve is operated according to the vertical movement of the center float 75. 58 act | operates and the raising / lowering control of the planting work machine 4 is performed. That is, when the center float 75 moves up, the hydraulic valve 58 is operated in a direction to extend the hydraulic cylinder 56, the planting work machine 4 is raised, and conversely, when the center float 75 moves down, the hydraulic cylinder 56 is contracted in the direction to contract. The valve 58 is actuated and the planting work machine 4 is lowered.

The configuration of the fertilizer applicator 5 is as follows (see FIGS. 3 to 5). That is, schematically, fertilizer storage portions 80,... And feeding portions 81,... Are provided on the rear side of the cockpit 42, and the fertilizer fed to the lower portion of the feeding portions is planted through the flexible fertilization conduits 82,. It is comprised so that it may guide to the side part vicinity of a strip. The air blown out from the blower 83 is sent into the fertilizer conduits 82,... Via the air chamber 84, and the fertilizer is conveyed in the fertilizer conduits 82,.

  The fertilizer storage unit 80 is formed integrally with a plurality of strips (for example, three strips), and a lid 80a common to each fertilizer storage unit is provided on the top thereof.

  The feeding portion 81 includes a main body portion 81a that houses the feeding roll 85, a funnel portion 81b that continues below the main body portion, and a connecting pipe 81c that is integrally formed at the lower end of the funnel portion and faces in the front-rear direction. The fertilizer conduit 82 is connected to the rear end portion of the connection pipe 81 c, and the front end portion of the connection pipe 81 c is inserted into the side surface of the air chamber 84.

  The feeding roll 85 is a rotating body in which fertilizer holding recesses 85a,... Are formed on the outer periphery, and the feeding roll 85 is attached to a common mounting shaft 87 in units of two strips. The power of the fertilization drive shaft 88 provided in the planting clutch case 65 is transmitted to the relay shaft 92 by the arm 89, the rod 90, and the arm 91, and each attachment is performed from the relay shaft 92 by the arm 93, the rod 94, and the arm 95. It is transmitted to the shaft 87. Since the arm 95 is transmitted to the mounting shaft 87 via the ratchet mechanism 96, the feeding roll 85 rotates intermittently at a predetermined angle in a certain direction. By rotation of the feeding roll 85, the fertilizer F in the fertilizer storage unit 80 is held in the recesses 85a, and dropped downward by an appropriate amount. The fertilizer feed amount of each feed portion 81 can be uniformly adjusted by the feed amount adjustment handle 98.

  The feeding roll 85 rotates so that the recesses 85a,... Move from top to bottom through the front side of the center of rotation. A brush 100 is provided on the front side of the feeding roll 85 to prevent the fertilizer in the fertilizer storage unit 80 from freely falling and to level the surface portion of the fertilizer held in the recess 85a. The quality of the hair of the brush 100 is different between the upper part and the lower part. The upper hairs 100a,... Are made of a relatively rigid material, and their tips are trimmed just before contacting the outer peripheral surface of the feeding roll 85. On the other hand, the lower hairs 100b,... Are made of a relatively flexible material, and have a length such that the tip reaches the inside of the recess 85a. Mainly, the upper hairs 100a,... Act to receive the fertilizer F in the fertilizer storage unit 80, and the lower hairs 100b,... Contact the outer peripheral surface of the feeding roll 85 and are held in the recesses 85a. It acts to level the surface part. Since the hair 100a can bend downward, the fertilizer F is not bitten between the brush 100 and the feeding roll 85. Note that the rear side of the feeding roll 85 is in contact with the rear wall surface of the main body case so that the fertilizer in the fertilizer storage unit 80 does not fall downward.

  An opening 101 is formed in the front portion of the main body case, and a fertilizer discharge door 102 is attached to this portion. The door 102 is provided on the shaft 103 as a fulcrum so that the door 102 can be opened and closed. When the door 102 is opened, the shutter 102a comes into contact with the outer peripheral surface of the feeding roll 85 and the fertilizer passage in the feeding roll 85 is blocked (FIG. 3). Indicated by a chain line in FIG. When the brush 100 is removed in this state, the fertilizer in the fertilizer storage unit 80 is discharged to the outside through the door 102.

  Moreover, the cleaning brush 104 which drops the fertilizer powder adhering to the inner wall of the funnel part is provided in the funnel part 81b. This cleaning brush 104 is obtained by implanting wire rods 104b around the rotating shaft 104a, and applies fertilizer conveying wind blown from the air chamber 84 to the blades 104c provided in the connection pipe 80c. The rotating shaft 104a is rotated.

  The air chamber 84 is provided horizontally to the left and right, and connecting pipes 81c,... Are inserted into holes 84a,. The left end of the air chamber 84 is an air inlet 84b, to which an air outlet 83a of a blower 83 is connected. An air guide pipe 105 that guides air from the rear part of the engine 30 is connected to the suction port 83 b of the blower 83. An openable / closable shutter 106 is attached to the right end of the air chamber 84. When the blower 83 is operated, the warm air behind the engine 30 is sent into the fertilizer conduits 82,... Through the air chamber 84, and the fertilizer in the fertilizer conduits 82,. 82, ... are kept dry to prevent the fertilizer from solidifying. The air chamber 84 is supported by the link base frame 50 and also serves as the frame of the fertilizer applicator 5.

  In order to collect the remaining fertilizer in the fertilizer storage unit 80 at the end of the work, etc., it is collected as follows separately from the method of collecting from the opening 101 using the fertilizer discharge door 102 as described above. Also good. That is, the blower port 83a of the blower 83 is removed from the blower port 84b of the air chamber 84, and the hose 108 having a branch pipe 108a partially branched as shown in FIG. 6 is connected to the removed blower port 83a. Then, when the branch pipe 108a is inserted into the fertilizer storage section 80 and the blower 83 is operated, the fertilizer in the fertilizer storage section 80 is sucked from the branch pipe 108a, and the fertilizer is discharged from the tip opening of the hose 108.

  The control circuit of the blower 83 is configured as shown in FIG. In the figure, 110 is a blower operation switch, and this switch is switched in conjunction with the operation of the hydraulic pressure / planting lever 59. The blower operation switch 110 is mounted as shown in FIG. 7, and when the hydraulic / planting lever 59 is operated to “planting machine down” or “planting clutch engaged”, the actuator 110a is in a free state. Yes, at that time, the blower operation switch 110 is COM-NC. In addition, when the hydraulic / planting lever 59 is operated to “planting machine lifting” or “planting machine fixing”, the actuator 110 a is pushed by the engaging portion 59 a, and at that time the blower operation switch 110 is set to COM−. NO. Reference numeral 111 denotes a relay, which opens the relay switch 111b when no current flows through the coil 111a, and closes the relay switch 111b when a current flows through the coil 111a.

  When the planting operation is not performed, the engaging portion 59a of the hydraulic / planting lever 59 continues to push the actuator 110a, the blower operation switch 110 is driven to the COM-NO side, and a current flows through the coil 111a. Since the relay switch 111b is open, the blower 83 is stopped. When the oil pressure / planting lever 59 is operated at the start of the planting operation, the engaging portion 59a is separated from the actuator 110a, the blower operation switch 110 becomes COM-NC, current flows through the coil 111a, and the relay switch 83b is turned on. Since it is closed, the blower 83 operates.

  As described above, since the blower 83 is stopped when an external force is applied to the actuator 110a and the blower 83 is activated when the actuator 110a is in a free state, there is an installation error of the blower operation switch 110. If the actuator 110a does not drive normally, the blower 83 may remain active when the blower 83 must be stopped, but the blower 83 will not operate when the blower 83 must be operated. Absent. For this reason, the worst situation that the blower 83 does not operate at the time of planting work and troubles such as clogging of fertilizers occur can be avoided.

  The above switch is not limited to the blower operation switch, the control switch for rolling of the planting work machine, the seedling reduction switch for notifying that the remaining amount of seedlings on the seedling stand has decreased, the fertilizer clogging detection switch for detecting fertilizer clogging, and the fertilizer It is effective when used for a fertilizer reduction switch for notifying that the remaining amount of fertilizer in the storage section has decreased.

It is a side view of the riding rice transplanter equipped with the fertilizer applicator. It is a top view of the chassis part of a traveling vehicle body. It is side surface sectional drawing of a fertilizer applicator. It is a rear view of a fertilizer applicator. It is side surface sectional drawing of the principal part of a feeding roll and a brush. It is explanatory drawing of the remaining fertilizer discharge method. It is a figure showing the attachment state of a blower operation switch. It is a blower control circuit diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Riding rice transplanter, 5 ... Fertilizer, 80 ... Fertilizer storage part, 81 ... Feeding part, 81b ... Funnel part, 81c ... Connection pipe, 82 ... Fertilizer conduit, 84 ... Air chamber, 104 ... Cleaning brush , 104c ... Blade

Claims (1)

The fertilizer storage section for storing the fertilizer, the feeding section for feeding the fertilizer in the fertilizer storage section, the connecting pipe to which the fertilizer fed in the feeding section is supplied via the funnel section , and the wind blown from the air chamber are in fertilizers that wind supplied via the connection pipe and a fertilization conduit that will be conveyed fertilization machine, the inner wall of the funnel portion is rotated by the wind blown out from the air chamber into the blade of the connecting tube strikes A fertilizer applicator equipped with a cleaning brush that removes adhering fertilizer powder .

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