JP2017000048A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter which generates no large difference between timings of turning on/off a planting clutch and a fertilizing clutch, achieves replenishment work of seedlings and maintenance work efficiently, and including a fertilization device prevented from being damaged erroneously.SOLUTION: A seedling transplanter includes on a travel vehicle body 2: a seedling planting part 4 planting seedlings; and a fertilization device 100 feeding a fertilizer. The seedling transplanter further includes: a fertilization clutch 460 turning on/off transmission to the fertilization device 100; and a clutch on/off mechanism switching on/off of the fertilization clutch 460. The clutch on/off mechanism is constituted by; a switch linkage member 94 sliding linearly by on/off operation of the fertilization clutch 460; a bendable on/off member 96 turning on/off the fertilization clutch 460; and an attachment member 95 attaching the on/off member 96 between both edges of the switch linkage member 94.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seedling transplanter for planting seedlings in a field and supplying fertilizer.

  A known seedling transplanter is provided with a fertilizer application device for supplying fertilizer to a field.

  In Patent Document 1, a fertilizer clutch on / off lever of a fertilizer application device is connected to a rod that slides back and forth in conjunction with an operation lever of a seedling planting portion. When moved, a configuration is disclosed in which the fertilizer clutch is turned on and off by a wire (not shown).

  As a result, the fertilization clutch can be turned on and off in conjunction with the turning on and off of the planting clutch that is transmitted to the seedling planting part, so that when the planting is stopped, the transmission to the fertilizer is forgotten and planting of the seedling is performed. Fertilizer is not supplied to the position where it is not present, consumption of excess fertilizer is suppressed, and generation of seedlings that grow too quickly due to excessive fertilizer is prevented.

  In addition, since it is possible to prevent the fertilizer from being supplied to the seedling planting position because the transmission to the fertilizer application is forgotten at the start of planting, the generation of seedlings that cause poor growth due to the lack of fertilizer is prevented.

  And as shown in patent document 2, the fertilizer hopper, feeding device, and air chamber which comprise a fertilizer application are arrange | positioned in the rear-end part of a traveling vehicle body, ie, the rear-end part vicinity of a rear step.

JP 2004-180517 A JP 2014-212718 A

  However, in the fertilizer applied to the seedling transplanter of Patent Document 1, the fertilizer clutch on / off lever rotates in an arc shape, so that the wire is easily loosened, and the timing at which the planting clutch is on / off and the fertilizer application There may be a difference in the timing at which the clutch is disengaged. Thereby, even if the planting of the seedling is stopped, the supply of the fertilizer continues for a while, and there is a problem that the fertilizer is supplied more than the other places, and the seedling is grown too quickly.

  In addition, fertilization starts after the start of planting of seedlings, and there is a problem that seedlings that are not supplied with fertilizer are generated and seedlings that grow slowly are generated.

  If some seedlings grow too early or too late, post-processing operations such as adding fertilizer, spraying and harvesting pesticides cannot be performed at the appropriate time, and immature or overripe crops are mixed. So there is a problem that the overall quality is degraded.

  In addition, the fertilizer applied to the seedling transplanter of Patent Document 2 is easy for the operator's feet to hit the fertilizer hopper and the feeding device when the worker moves to the rear step to replenish the seedling planting part. There is a problem that damage is likely to occur.

  Furthermore, when the operator steps on the air chamber, the flow and momentum of the conveying wind for conveying the fertilizer changes, and an appropriate amount of fertilizer cannot be supplied, resulting in an excess or deficiency of the fertilizer.

  If the worker is away from the fertilizer hopper, feeding device and air chamber so as not to cause the above problems, it will become difficult to access the seedling planting part, and the efficiency of the seedling replenishment work will be reduced and the labor of the worker will be reduced. Problems such as increase occur.

  Moreover, since the space part between a rear step and a fertilizer application is narrow, the problem which cannot perform a maintenance operation | work arises.

  The present invention is a seedling transplanter provided with a fertilizer that does not cause a large difference in the timing at which the planting clutch and the fertilization clutch are turned on and off, and that efficiently replenishes and maintains the seedling and does not cause accidental damage. The purpose is to provide.

  The invention according to claim 1 is provided with a seedling planting part (4) for planting seedlings on the traveling vehicle body (2) and a fertilizer application device (100) for supplying fertilizer, and the transmission to the fertilizer application device (100) is turned on and off. In the seedling transplanter provided with a fertilization clutch (460) to be turned on and provided with a clutch on / off mechanism for switching on / off of the fertilization clutch (460), the clutch on / off mechanism is linearly moved by an on / off operation of the fertilization clutch (460). Switching interlocking member (94) that slides in a shape, bendable on / off member (96) for turning on and off the fertilization clutch (460), and attaching / closing member (96) to the switching interlocking member (94) The seedling transplanting machine is characterized by comprising the mounting member (95).

  The invention according to claim 2 is the seedling transplanter according to claim 1, wherein the attachment member (95) is provided between both ends of the switching interlocking member (94).

  In the invention according to claim 3, the fertilizer application (100) includes a fertilizer switching device (400) for changing a fertilizer supply amount, a fertilizer hopper (60) for storing fertilizer, and the fertilizer hopper ( 60) and a fertilizer guide member (62) for guiding the fertilizer supplied from the feeding device (61) to a farm field. The seedling according to claim 1 or 2, wherein a fertilization support member (102, 104) for supporting the fertilizer application (100) is provided between a rear beam frame (16) and an upper and lower sides of the fertilizer application (100). A transplanter was used.

  According to a fourth aspect of the present invention, the fertilizer application support members (102, 104) are respectively disposed below the fertilizer guide members (62) on the inner side of the fertilizer guide members (62) on the left and right outer sides. The seedling transplantation according to claim 3, characterized by comprising a supporting member (102) and a second supporting member (104) arranged respectively on the left and right sides below the fertilizer guide member (62) at the center of the left and right. It was a machine.

  According to a fifth aspect of the present invention, a rearwardly inclined portion (102a) is formed at a rear portion of the first support member (102), and the second support member (104) is connected to a gate-type connecting member (103). ) To the rear beam frame (16) to provide a seedling transplanter according to claim 4.

  Moreover, the invention according to claim 6 is provided with a ventilation member (68) for supplying a conveyance air for conveying the fertilizer to the fertilizer guide member (62), and a blowing device for supplying the conveyance air to the ventilation member (68). (67) is provided, an intake passage (69) through which the air blower (67) takes air is provided behind the fertilization support member (102, 104), and the fertilizer guide member (69) is provided above the intake passage (69). 62), and a convex curved portion (69b) is formed in the upper portion of the intake passage (69). The seedling transplanter according to any one of claims 3 to 5, .

  In the invention according to claim 7, the traveling vehicle body (2) is provided with traveling wheels (11), and the fertilizer guide member (62) is provided with a ventilation member (68) for supplying conveyance air for conveying fertilizer. The blower (67) for supplying the conveying air to the ventilation member (68) is provided, and the blower (67) is provided behind the fertilization support member (102, 104) and above the traveling wheel (11). The seedling transplanter according to any one of claims 3 to 5, wherein an intake passage (69) for taking in air is provided, and a concave curved portion (69a) is formed in a lower portion of the intake passage (69). It was.

  According to the first aspect of the present invention, the mounting member (95) provided on the switching interlocking member (94) that slides linearly is provided with the bendable on / off member (96). ) Can be prevented from slackening in the on / off member (96), the timing at which the fertilization clutch (460) is cut off is prevented from being delayed, and the supply of excess fertilizer is prevented.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the attachment member (95) is provided between the both ends of the switching interlocking member (94). 96) can be attached at a position where it is difficult to interfere with other members.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the fertilization support member (102, 104) is provided between the rear beam frame (16) and the fertilizer application (100). Since the vertical space between the rear beam frame (16) and the fertilizer application device (100) can be widened, the operator's feet can enter the vertical space and go to the seedling planting unit (4). The efficiency of replenishing seedlings and replenishing fertilizer to the fertilizer application device (100) is improved.

  In addition, since the seedling and fertilizer can be replenished in a stable posture, work safety is improved.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the first support member (62) below the fertilizer guide member (62) on the inner side of the fertilizer guide member (62) on both the left and right outer sides. 102), the operator's feet can be exposed below the left and right outer sides of the fertilizer application device (100), so that the upper surface of the traveling vehicle body (2) can be used to the left and right outer sides, Work efficiency is improved.

  Further, by providing the second support members (104) below the left and right central fertilizer guide members (62) and on both the left and right sides, the left and right central portions of the fertilizer application (100) are distorted downward due to the load. Therefore, it is possible to prevent the amount of fertilization from being different between the left and right sides and the center, and to prevent the seedling from becoming unstable.

  According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, the rearwardly inclined portion (102a) is formed at the rear portion of the first support member (102), so that the adhered mud is attached. Can easily flow downward, reducing the time and labor required to remove the mud.

  Further, by connecting the second support member (104) to the rear beam frame (16) via the gate-shaped connecting member (103), the load applied to the fertilizer application (100) is more firmly received, and fertilization is performed by the load. Since it is possible to prevent the left and right central portions of the device (100) from being distorted downward, it is possible to prevent the amount of fertilization from being different between the left and right sides and the central portion, and to prevent seedling growth from becoming unstable.

  According to the invention described in claim 6, in addition to the effect of the invention described in any one of claims 3 to 5, the convex curved portion (69b) is formed in the upper portion of the intake passage (69). As a result, the fertilizer guide member (62) can be prevented from being bent by coming into contact with the upper portion of the intake passage (69), and the movement path of the conveying wind can be prevented from being deformed, so that the amount of fertilizer supplied to the field can become unstable. It is prevented and the growth of the seedling is stabilized.

  According to the invention described in claim 6, in addition to the effect of the invention described in any one of claims 3 to 5, the concave curved portion (69a) is formed in the lower portion of the intake passage (69). Since the vertical distance between the traveling wheel (11) and the intake passage (69) can be increased, mud adhering to the traveling wheel (11) is prevented from adhering to the intake passage (69), and mud is taken up by the intake passage. It is possible to prevent the temperature of the conveying air passing through (69) from being lowered. As a result, the fertilizer and the fertilizer transport path are dried by the transport air, so the fertilizer is transferred as a lump. It is prevented that it stops moving, and the growth of the seedling is stabilized.

  Moreover, since the mud adhering to the traveling wheel (11) can be prevented from pressing the intake passage (69), the momentum of the conveying wind generated by the blower (67) can be prevented from being reduced, and the fertilizer can be transferred to the field. It can be reliably transported.

Side view of seedling transplanter Top view of seedling transplanter Schematic front view showing fertilization transmission mechanism between fertilizer and rear wheel gear case viewed from the front of the seedling transplanter Schematic front view showing fertilization transmission mechanism between fertilizer and rear wheel gear case viewed from the front of the seedling transplanter Left side sectional view of the feeding part of the fertilizer application device Side view of essential parts of fertilizer application device, fertilizer transmission mechanism and feed amount adjustment mechanism A block diagram showing the control relationship between various sensors and the members to be controlled, centering on the controller Schematic plan view of fertilizer application and driver's seat viewed from above (A) The principal part side view which provided the fertilizer shutter between the fertilizer hopper and the feeding part, (b) The principal part perspective view of the fertilizer shutter (A) The principal part side view which shows the state which has arrange | positioned the delivery rotation pin in the rear part side of the delivery rotation arm, (b) The state which has arrange | positioned the delivery rotation pin in the front-back direction center part of the delivery rotation arm. Side view Side view of the main part showing the traveling vehicle body and fertilizer application lower side Side view of the main part showing a fertilizer applicator equipped with a traveling vehicle body and intake duct Side view of essential parts showing a fertilizer applying a suction duct of another configuration example The principal part side view which shows the fertilizer which equipped with the air intake duct which combined the structural example of FIG. 12 and FIG. Side view of main part showing open state of hopper lid and open / close connecting wire

  Hereinafter, a riding type rice transplanter equipped with a fertilizer application will be described with reference to the drawings.

  FIG. 1 is a side view of a seven-row planted rice transplanter 1 equipped with a fertilizer application according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

  In the present specification, the front / rear / left / right direction reference defines the front / rear, left / right reference based on the traveling direction of the vehicle body as viewed from the driver's seat.

  In this rice transplanter 1, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so as to be movable up and down, and a main body portion of the fertilizer application device 100 is provided on the rear upper side of the traveling vehicle body 2. .

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and a pair of left and right rear wheels 11 as drive wheels, and a mission case 12 is disposed in the front part of the fuselage. A front wheel final case 13 is provided on the side, and the front wheels 10 are respectively attached to left and right front wheel axles that project outward from respective front wheel support portions that can change the steering direction of the left and right front wheel final cases 13.

  Further, the front end of the main frame 15 is fixed to the rear portion of the transmission case 12, and the rear wheel gear case 18 is supported by a rear wheel rolling shaft provided horizontally in the front and rear at the center of the rear end of the main frame 15. The rear wheels 11 are respectively attached to left and right rear wheel axles that are supported in a freely rolling manner and project outward from the rear wheel gear case 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a belt transmission device 21 and an HST (hydrostatic hydraulic stepless transmission) 23. The output of the HST 23 is increased or decreased by an operation amount of a speed change lever 24 provided on a bonnet 32 described later, and forward / backward travel and travel stop are switched by the operation of the speed change lever 24. The operation amount of the shift lever 24 is determined from the operation angle detected by the lever potentiometer 24a.

  When the lever potentiometer 24a detects a reverse operation, the seedling planting unit 4 is raised, and the seedling planting and fertilization are stopped.

  The rotational power transmitted to the mission case 12 is shifted by the transmission in the mission case 12, and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final case 13 to drive the pair of left and right front wheels 10 and 10, and the rest is transmitted to the rear wheel gear case 18 to drive the pair of left and right rear wheels 11 and 11. To do.

  Further, the external take-out power is transmitted to a planting clutch case 25a configured on the right side of the machine body of the mission case 12, and if the planting clutch 25 provided in the planting clutch case 25a is in the engaged state, the planting transmission shaft 26 is provided. Is transmitted to the seedling planting unit 4 via.

  The upper part of the engine 20 is covered with an engine cover 30, and a driver's seat 31 is installed thereon. A bonnet 32 incorporating various operation mechanisms is provided in front of the driver's seat 31, and a steering handle 34 for steering the front wheels 10 is provided above the bonnet 32. The amount of operation of the steering handle 34 is detected by the handle potentiometer 34a. When the amount of operation reaches a set value that is considered to be the start of turning, the seedling planting unit 4 is raised to perform seedling planting and fertilization. When the operation amount reaches a set value that can be regarded as the end of the turning travel, the seedling planting unit 4 is lowered to control planting and fertilization of the seedling. A controller 210 for control is housed inside the hood 32.

  The engine cover 30 and the bonnet 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking on the floor step 35 falls into the field.

  The elevating link device 3 has a parallel link configuration and includes one upper link 40 and a pair of left and right lower links 41. The upper link 40 and the lower link 41 are pivotally attached to a gate-shaped link base frame 42 in a rear view in which the base side is erected at the rear end of the main frame 15, and the vertical link 43 is attached to the distal end side thereof. Are connected. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44.

  An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm (not shown) integrally formed with the upper link 40, and the elevating hydraulic cylinder 46 is expanded and contracted hydraulically. Thus, the upper link 40 rotates up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The raising / lowering operation of the seedling planting part 4 by the expansion / contraction of the raising / lowering hydraulic cylinder 46, that is, the up / down rotation of the raising / lowering link device 3 is performed by the raising / lowering button 24b provided on the transmission lever 24.

  When the elevating link device 3 rotates to a predetermined height, the fertilization clutch and a fertilization clutch 460 described later are linked to each other, and the seedling and fertilizer are released in the air and are prevented from being consumed excessively. To do.

  This application demonstrates the structure of the said seedling planting part 4 which is a structure of 7 row planting. First, the planting transmission cases 50a for transmitting the driving force rearward are arranged on the planting transmission frame 50 in the left-right direction of the machine body at intervals in the left-right direction. Four planting transmission cases 50a are provided in the present application. In addition, on the upper part of the planting transmission frame 50, there is provided a seedling platform 51 on which seedlings are loaded and reciprocated left and right. In the present application, the seedling stage 51 is divided by a fence so that seven seedlings are stacked in the left-right direction, and the seedling stage 51 reaches the left and right ends at a predetermined timing for each line. , And a seedling feed belt 51b for moving the seedling downward.

  Then, seedlings are taken from the seedling placing stand 51 with the seedling picking nails 52a on the left and right sides of the planting transmission case 50a on both left and right sides of the machine body and the planting transmission case 50a adjacent to the planting transmission case 50a on the left side of the machine body. Each of the seedling planting devices 52 to be planted in the field is provided, and the seedling planting device is provided on one of the left and right sides of the planting transmission case 50a adjacent to the planting transmission case 50a at the right end of the machine body. Only one 52 is provided. The seedling planting device 52 rotates by drawing an elliptical trajectory by an internal eccentric gear mechanism (not shown), and each of the seedling picking claws 52a is placed at a target position around a rotation axis (not shown). Installing.

  A seedling removing port 51a through which the seedling removing claw 52a passes is formed in the lower part of the seedling placing stand 51, and the seedling placing device 52 can be moved while scraping a set amount of seedlings by rotation of the seedling planting device 52.

  Further, a center float 55 is provided below the seedling planting portion 4 and in the vicinity of the center position in the left-right direction, and side floats 56 are respectively disposed on the left and right sides of the center float 55. The side float 56 on the right side of the machine body is provided below a planting transmission case 50a in which the seedling planting device 52 is provided only on the left and right sides, and the side float 56 on the left side of the machine body is provided with a planting transmission case 50a at the left end of the machine body. It is provided in the left and right spacing portion of the planting transmission case 50a adjacent to the planting transmission case 50a at the left end of the machine body. Further, outer floats 57 are respectively provided on the left and right outer sides of the left and right side floats 56 and below the planting transmission cases 50a on the left and right sides.

  When the aircraft is advanced with the center float 55, the left and right side floats 56, and the outer float 57 in contact with the field scene, the floats 55, 56, 57 slide while leveling the unevenness of the field scene. The seedling planting device 52 plantes seedlings on this leveling mark.

  Each of the floats 55, 56, and 57 is rotatably attached so that the front end side thereof moves up and down corresponding to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is a float sensor during planting work. (See FIG. 6), and by switching a hydraulic valve (not shown) that controls the lifting hydraulic cylinder 46 in accordance with the detection result, raising and lowering the seedling planting part 4 allows the seedling planting depth to be increased. Always keep it constant.

  Next, the fertilizer applying apparatus 100 will be described.

  As shown in FIG. 1, the fertilizer application device 100 feeds the granular fertilizer stored in the fertilizer hopper 60 by a certain amount by a feeding device 61 provided for each seedling planting strip, and the fertilizer is applied to the fertilizer hose 62. The fertilizer guide 63 attached to the center float 55, the side float 56, and the outer float 57 is guided to the fertilizer groove formed in the vicinity of the side portion of the seedling planting line by the grooved body 64 provided on the front side of the fertilizer guide 63. It is configured to drop. The fertilizer hose 62 covers the outer periphery of the rear end portion of the discharge cylinder portion 72 formed in a downwardly inclined posture at the bottom of the feeding device 61, and is tightened and attached with a hose clamp (not shown) or the like.

  In addition, since the number of planting strips of the seedling planting unit 4 is seven in this application, the fertilizer 100 needs to supply fertilizer to each of the seven strips simultaneously, so that the feeding device 61 and the fertilizer hose 62 are respectively Seven are provided.

  Then, as shown in FIGS. 2, 4, 6 and 8, the conveying air generated by the blower 67 driven by the blower motor 66 is blown into the fertilizer hose 62 via the air chamber 68 which is long in the left-right direction. The fertilizer in the fertilizer hose 62 is forcibly conveyed by wind pressure. Further, the blower 67 is connected to an end portion of an intake duct 69 for sucking air to be conveyed. The intake duct 69 is disposed on the side opposite to the air chamber 68 (rear side of the fuselage) with the feeding device 61 in between in the left-right direction, and the base of the intake duct 69 is located at the center in the left-right direction of the fuselage. It is arranged behind 20. The air chamber 68 is disposed below the front side of the fertilizer hopper 60, and the front end of the discharge cylinder 72 is inserted into the cylinder to be connected, so that the conveying air is supplied to each fertilizer hose 62. .

  Further, as shown in FIG. 8, the feeding device 61 is configured so that the fertilizer remaining in the fertilizer hopper 60 can be discharged from the rear discharge window 61 b, and the left and right discharge ducts 70 through which the discharged fertilizer moves are provided with the fertilizer. Provided below the rear side of the hopper 60. The base side of the discharge duct 70 is connected to the blower 67, and the conveying wind moves to either the air chamber 68 or the discharge duct 70 by the operation of the air blowing switching lever 71 provided at the right end of the body of the fertilizer application apparatus 100. It is configured to be selectable. A discharge port 77 is provided at the end of the discharge duct 70 to discharge the fertilizer out of the machine. The discharge port 77 has a fine mesh shape, the conveying air blows through, and the fertilizer falls into a collection container such as a bucket disposed below along the discharge port 77. In the shape in which the conveying air is difficult to escape, there is a problem that the fertilizer is pressed into the discharge port 77 by the conveying air and does not come out as a lump, but this problem can be solved by forming a net.

  As described above, the intake duct 69 sucks the exhaust heat of the engine 20 so as to increase the temperature of the fertilizer transport wind, so that moisture is removed from the fertilizer being transported, and the fertilizer becomes a lump, It is prevented that the amount supplied to the field is insufficient by sticking to the conveyance path such as the chamber 68 and the fertilizer hose 62.

  Since the fertilizer stored in the fertilizer hopper 60 is also warmed, moisture contained in the stored fertilizer can be removed, so that the fertilizer is prevented from becoming clumped and sticking, and the fertilizer is set. It becomes possible to supply by quantity and fertilization accuracy is improved.

  Further, as shown in FIGS. 4 and 8, the left and right of the fertilizer hopper 60 adjacent to the right side of the fertilization hose 62 and the lower side of the fertilizer hopper 60, specifically the left and right central fertilization hose 62. Between them, a fertilizer adjustment mechanism 400 is arranged in which an operator adjusts the fertilizer application. The feeding adjustment mechanism 400 is disposed behind the engine cover 30 that covers the periphery of the engine 20 and above the rear step 37 provided at the rear portion of the floor step 35 with a space therebetween.

  As shown in FIGS. 3, 4, and 6, the feeding adjustment mechanism 400 uses the driving force transmitted through the fertilization transmission mechanism 300 to fertilize fed from a feeding device 61 that feeds fertilizers by a set amount. It is a mechanism for adjusting the amount. The fertilizer transmission mechanism 300 and the feeding adjustment mechanism 400 will be further described later.

  As shown in FIGS. 4 and 11, the fertilizer 100 includes a left-right fertilization frame 101 to which the feeding device 61, blower 67, air chamber 68, discharge duct 70, and the like are attached. Are formed by attaching or mounting attachment portions (not shown) at four locations. Further, a rear beam frame 16 is disposed on the rear side of the main frame 15 with the left-right direction as a longitudinal direction, and the fertilizer projecting toward the rear of the aircraft is located on the inner side of the aircraft from the left and right ends of the rear beam frame 16. The first mounting plates 16a and 16a of the device 100 are respectively mounted. And between the left and right of the left and right first mounting plates 16a, 16a, the second mounting plates 16b, 16b are provided so as to protrude rearward. The second mounting plates 16b and 16b are members that receive most of the load of the fertilizer applying apparatus 100, and the left and right first mounting plates 16a and 16a are mainly used for mounting.

  Of the attachment portion of the fertilization frame 101, closer to the inner side of the machine body than the left and right outer sides of the machine body, specifically, near the feeding device 61 and the fertilization hose 62 on the inner side of the machine body adjacent to the feeding device 61 and the fertilization hose 62 at the left and right ends. The mounting part located and the said mounting plates 16a and 16a are each connected by the 1st fertilization support plates 102 and 102 which make an up-down direction a longitudinal direction.

  Then, rear falling inclined portions 102a are formed at the rear portions of the first fertilization support plates 102, 102, respectively. As a result, even if the mud that the left and right rear wheels 11 and 11 bounces up adheres to the first fertilization support plate 102, the sloping slope 102a makes it easier for the mud to fall downward on the rear side of the machine body, and the mud is removed. The time and labor required for this are reduced.

  Moreover, the gate in the front (rear) view connecting the left and right second mounting plates 16b and 16b below the feeding device 61 and the fertilizer hose 62 located on the fourth line, whether counted from the left or right center in the present application. A joint plate 103 of a mold is provided, and left and right second fertilization support plates 104, 104 are provided on the upper portion of the joint plate 103. The feeding device 61 and fertilization hose 62 located on the second fertilization support plates 104, 104 and the fourth line. Connect the mounting parts located on both the left and right sides. Of the left and right second fertilizer support plates 104, 104, the one located on the right side of the machine body is disposed in the vicinity of the fertilizer application amount adjusting device 400.

  Note that the intake duct 69 is disposed behind the first fertilization support plates 102 and 102 and the second fertilization support plates 104 and 104 and above the rear wheel 11 in a side view. Further, the intake duct 69 is disposed below the fertilization hose 62.

  By connecting the rear beam frame 16 and the fertilization frame 101 via the left and right first fertilization support plates 102 and 102, the gate-shaped joint plate 103 and the second fertilization support plates 104 and 104, a fertilizer hopper 60 and an air chamber 68 can be positioned above the upper surface of the rear step 37, so that an operator can prevent the fertilizer hopper 60 and the air chamber 68 from being accidentally kicked and the fertilizer hopper 60 and the air chamber 68 from being deformed or damaged. Is done.

  Further, since the air chamber 68 is positioned above the upper surface of the rear step 37, it is possible to prevent the operator from stepping on the air chamber 68 and damaging it, and to disturb the flow of the conveying air in the air chamber 68. It is possible to prevent the occurrence of planting work strips in which a large amount of fertilizer is not supplied and to stabilize the growth of seedlings.

  And since an operator's leg | foot can be inserted in the up-and-down space | interval part of the fertilizer 100 and the rear step 37, an operator can approach the seedling planting part 4 and the fertilizer 100 with the stable attitude | position, a seedling and fertilizer The efficiency of replenishment work and the safety of work are improved.

  Furthermore, since the air chamber 68 is positioned above the upper surface of the rear step 37, a wide space for removing and cleaning the fertilizer clogging of the air chamber 68 and the discharge cylinder portion 72 can be secured, thereby improving work efficiency and maintainability. To do.

  In addition, by connecting the left and right first fertilization support plates 102 and 102 to the attachment portion of the fertilization frame 101 at positions on the inner side of the machine than the left and right ends of the machine, the utilization range of the rear step 37 is expanded to the left and right edges. It becomes easy to replenish seedlings at both the left and right ends of the planting part 4, and the work efficiency is improved.

  The left and right second fertilizer support plates 104 and 104 are provided on the joint plate 102 that connects the left and right second mounting plates 16b and 16b, thereby supporting the central portion in the left and right direction where the load of the fertilizer application device 100 is likely to concentrate. Since the strength can be increased, the durability of the main frame 15 and the fertilizer frame 101 is improved, and the center of the fertilizer apparatus 100 is prevented from being bent downward by a load, and there is a difference in the amount of fertilizer supplied for each strip. It is prevented from occurring.

  The seedling planting portion 4 is provided with a leveling rotor 27 (a combination of the first leveling rotor 27a and the second leveling rotor 27b may be simply referred to as leveling rotor 27).

  The seedling stage 51 is horizontally supported by a support roller 65a that is slidably supported at the upper end of a rectangular support frame 65 that is full in the horizontal direction and the vertical direction that supports the entire seedling planting unit 4. It is the structure which slides.

  A pair of left and right spare seedling frames 38 on which a replenishing seedling is placed are provided on both the left and right sides of the front portion of the traveling vehicle body 2.

  Hereinafter, the structure of each part of the fertilizer application apparatus 100 is further demonstrated.

  FIG. 3 is a schematic front view of the fertilizer application apparatus 100 according to the present embodiment as viewed from the front of the rice transplanter. FIG. 6 is a left side cross-sectional view of the feeding device 61 of the fertilizer application device 100 of the present embodiment.

  The lower portion of the fertilizer hopper 60 is branched into a number of fertilizer strips (seven strips) to form a funnel-shaped flow lower portion 60b, and the lower portion of the flow lower portion 60b is connected to the upper end of each feeding device 61. .

  As shown in FIGS. 3 to 6, the feeding device 61 incorporates two first feeding rolls 73 </ b> A and second feeding rolls 73 </ b> B that feed the fertilizer in the fertilizer hopper 60 downward. The first and second feeding rolls 73A and 73B are rotating bodies each having a groove-like recess 74 formed in the outer peripheral portion, and are provided with a corner shaft portion 75a of a common feeding shaft 75 provided in the left-right direction (in the illustrated example, a square shaft). ) Are configured to rotate integrally with each other. The drive source of the feeding shaft 75 will be described later with reference to FIG.

  In addition, a frame-shaped shutter case 80 is provided on each strip between the lower part of the lower flow part 60 b below the fertilizer hopper 60 and the feeding device 61, and is long in the left-right direction formed before and after the shutter case 80. A plate-shaped fertilizer shutter 81 is slidably provided in a shutter hole 80a that is short in the direction.

  As shown in FIGS. 6 and 9 (a) and 9 (b), the fertilizer shutter 81 is formed of a plate member that is long in the front-rear direction and rectangular in plan view, and has a handle 81a for sliding operation by bending the front end side. And a fertilizer dropping hole 81b having substantially the same shape as the flow lower portion 60b is formed immediately after the handle 81a. And let the rear side rather than this fertilizer fall hole 81b be the fall control part 81c which prevents the fall of a fertilizer.

  If the drop regulating portion 81c is formed in a non-flat shape by forming grooves, protrusions, etc. on the upper surface, the pressure can be dispersed when the fertilizer is placed, the fertilizer is solidified by its own weight, and the fertilizer falls from the flow bottom 60b. Can be prevented.

  By providing the fertilizer shutter 81 described above, when the fertilizer shutter 81 is slid and the drop regulating portion 81c is allowed to face the flow lower portion 60b, fertilizer is prevented from accumulating in the feeding device 61 when moving to the work field. Therefore, the fertilizer is agglomerated in the feeding device 61, the set amount of fertilizer is not supplied to the first feeding roll 73A and the second feeding roll 73B, and the occurrence of poor growth of crops due to lack of fertilizer is prevented.

  Conventionally, the fertilizer thrown into the fertilizer hopper 60 has fallen to the narrow feeding device 61 through the narrow lower stream portion 60b, and becomes a lump by the weight of the fertilizer and may not fall. It was. In particular, when bridging occurs by intensively adhering to the flow wall 60b or the inner wall surface of the feeding device 61, the fertilizer dropped on the bridged portion is accumulated as it is, and the set amount of fertilizer is not supplied. there were.

  Further, when fertilizer is clogged in the feeding device 61 and the need for maintenance work occurs, the fertilizer shutter 81 can regulate the fall of the fertilizer, so that the fertilizer hopper 60 can be rotated backward while leaving the fertilizer. Maintenance work can be performed efficiently.

  Conventionally, it is necessary to remove the fertilizer in the fertilizer hopper once during the maintenance work, and an extra time is required for the maintenance work. However, the above-described configuration can shorten the work time.

  Further, when the first feeding roll 73A and the second feeding roll 73B rotate in the direction of the arrow in the drawing, the fertilizer dropped and supplied from the fertilizer hopper 60 is accommodated in the recess 74 and fed downward. The fertilizer fed by the first feeding roll 73A and the second feeding roll 73B is discharged from the discharge port 61a at the lower end.

  Connected to the discharge port 61a of the feeding device 61 is a connecting pipe (not shown) whose front end is inserted and connected to the back surface of the air chamber 68 in the front-rear direction and whose rear end communicates with the discharge port 61a of the feeding device 61. Has been.

  On the other hand, the left end portion of the air chamber 68 is connected to the blower 67 via an air switching pipe, and when the air from the blower 67 passes through the discharge port 61a of the feeding device 61 from the connection pipe via the air chamber 68. Further, the fertilizer is blown into the fertilizer hose 62 side while the fertilizer is involved.

  In addition, the number of the concave portions 74 of the first feeding roll 73A and the second feeding roll 73B in the illustrated example is six, and the phases of the concave portions 74 are arranged differently so that the positions of the concave portions 74 are not adjacent to each other. Has been. Thereby, each recessed part 74 of 73 A of 1st feed rolls and the 2nd feed roll 73B will alternately feed a fertilizer, and the quantity of the fertilizer discharged from the discharge outlet 61a is equalized temporally.

  The phase of the recesses 74 of the first feeding roll 73A and the second feeding roll 73B is changed by removing either the first feeding roll 73A or the second feeding roll 73B from the feeding shaft 75 and changing the phase appropriately. It can be made equal. This makes it possible to apply fertilizer to the field in the form of dots.

  Further, inside the feeding device 61, a brush 76 that is slidably in contact with the outer peripheral surfaces of the first feeding roll 73A and the second feeding roll 73B on the side (front side) where the recess 74 moves downward is detachably provided. By this brush 76, the fertilizer is housed in the recesses 74 of the first feeding roll 73 </ b> A and the second feeding roll 73 </ b> B, and the amount of fertilizer fed by the first feeding roll 73 </ b> A and the second feeding roll 73 </ b> B is kept constant.

  A supply path for driving force for driving and rotating the feeding shaft 75 will be described. As shown in FIGS. 3 and 6, a fertilization clutch 460 provided in the rear wheel gear case 18 on the right side of the machine body and inside the machine body is provided with a crank-shaped fertilization transmission output shaft 461, and the fertilization transmission output shaft 461 is vertically moved. A fertilizer transmission drive rod 462 that reciprocates in the direction is provided.

  A relay rod 463 that changes the transmission direction of the driving force from the fertilization transmission drive rod 462 to the longitudinal direction of the machine body is disposed in the left-right direction, and the fertilization transmission drive rod is interposed between the fertilization transmission drive rod 462 and the relay rod 463. In conjunction with the vertical movement of 462, the rocking coupling fulcrum pin 464a is used as a fulcrum, and the rocking coupling plate 464 is arranged in the vertical direction at both front and rear ends, and the driving force is applied to the other end of the relay rod 463 as described later. By arranging the sub drive rod 465 that transmits to the arm 467, the fertilization transmission mechanism 300 is configured.

  The sub drive rod 465 is disposed below the rear side of the machine body of the fertilizer hopper 60, and a feed rotation arm 467 that drives and rotates the feed shaft 75 in accordance with the fertilizer application amount at the upper end of the sub drive rod 465. Connect the rear ends of the two. Then, the front end portion of the feeding rotation arm 467 and the feeding shaft 75 are connected by a fertilization driving arm 468.

  As shown in FIGS. 10 (a) and 10 (b), the feeding rotation arm 467 is an elongated, substantially rectangular parallelepiped casing, and a long hole 467a is formed on the left and right sides thereof by penetrating the left and right side walls. ing. The long hole 467a is formed in the front-rear direction, and the feeding rotation pin 469 is disposed through the long hole 467a. The feeding rotation pin 469 has a diameter that can contact the upper and lower ends of the long hole 467a, and the rotation fulcrum position of the feeding rotation arm 467 is changed by changing the front / rear position of the feeding rotation pin 469. The amount of rotation on the front end side of the fertilizer application arm 468, in other words, the time required for reciprocal rotation is changed, and a plurality of positions are formed on the first feeding roll 73A and the second feeding roll 73B per predetermined time. The number of times the fertilizer is dropped from the recessed portion 74 is increased or decreased, thereby changing the fertilizer amount.

  For example, as shown in FIG. 10B, the amount of rotation on the front end side of the feeding rotation arm 467 is smaller as the feeding rotation pin 469 is moved to the front side of the machine body, that is, the time required for reciprocating rotation is shorter. Thus, since the rotation amount of the fertilizer application arm 468 becomes smaller in conjunction with the rotation, the frequency with which the feeding shaft 75 rotates increases. Thereby, since the rotation angle of the 1st delivery roll 73A and the 2nd delivery roll 73B in predetermined time becomes large, and the number of the recessed parts 74 which reach | attain a fall position can be increased, the fertilizer which falls to a farm field increases.

  On the other hand, as shown in FIG. 10 (a), the amount of rotation on the front end side of the feeding rotation arm 467 increases as the feeding rotation pin 469 is moved to the front or rear side of the machine body. Since the time becomes longer and the amount of rotation of the fertilization drive arm 468 increases in conjunction with the rotation, the frequency of rotation of the feeding shaft 75 decreases. Thereby, since the rotation angle of the 1st delivery roll 73A and the 2nd delivery roll 73B in predetermined time becomes small, and the number of the recessed parts 74 which reach | attain a fall position reduces, the fertilizer which falls to a farm field reduces.

  As described above, the fertilizer application amount of the fertilizer application apparatus 100 can be adjusted by changing the front-rear position of the feeding rotation pin 469.

  In order to perform the fertilization amount adjustment operation, as shown in FIGS. 3, 4 and 11, a fertilization amount adjustment knob 410 for rotating the ball screw 420 is provided at the front end portion of the ball screw 420, and is formed on the surface of the ball screw 420. A ball nut 430 that is screwed into the spiral groove and moves in the longitudinal direction of the machine body at high speed is provided, and the feeding rotation pin 469 is provided on the ball nut 430. Thereby, the feeding adjustment mechanism 400 is configured.

  The feeding rotation pin 469 is disposed closer to the upper side of the machine body than the central portion of the ball nut 430 in the vertical direction, and is offset from the ball screw 420 in a side view and positioned above the ball screw 420. Further, the ball screw 420 and the fertilizer application amount adjustment knob 410 are arranged above the air chamber 68 and the engine cover 30.

  With the arrangement configuration described above, the fertilization amount adjustment knob 410 is disposed above the air chamber 68 and the engine cover 30, so that when the fertilization amount adjustment knob 410 is operated, the movement of the operator's hand and fingers is obstructed. Since it becomes difficult, the efficiency of adjusting the fertilizer application is improved and the maintainability is improved.

  In addition, since the ball screw 420 is positioned below the fuselage with respect to the feed rotation pin 469, the weight of the feed adjustment mechanism 400 can be reduced to the lower side of the fuselage, thereby lowering the center of gravity of the fuselage and stabilizing the running posture. In addition, planting accuracy and fertilization accuracy of seedlings are improved.

  Next, the structure which links planting of seedling and turning on / off of fertilizer will be described.

  If planting of seedling and turning on / off of fertilizer are not performed at the same time as possible, fertilizer will not be supplied, seedlings that will grow slower than others due to lack of fertilizer will be generated, or fertilizer will be supplied to places where there is no seedling Problems occur.

  In order to cope with this problem, as shown in FIG. 11, an interlocking switching stay 90 that protrudes toward the front of the body is provided on the right side of the body of the rear beam frame, and the planting clutch 25 is provided on the rear side of the body of the interlocking switching stay 90. A clutch on / off motor 91 for turning on / off the fertilizing clutch 460 is provided. The clutch on / off motor 91 is a forward / reverse motor. Further, a rotating arm 92 provided on the upper side with a rack gear 92a meshing with a transmission gear 91a provided on the clutch on / off motor 91 on the front side of the interlocking switching stay 90 is rotated up and down around a rotating shaft 92b in the horizontal direction. An on / off potentiometer 93 that detects the amount of rotation of the rotating arm 92 is provided.

  An interlocking on / off rod 94 is provided across the lower side of the rotating arm 92 and the planting clutch case 25a, and the interlocking on / off rod 94 slides in the front-rear direction by the vertical rotation of the rotating arm 92. The configuration. The interlocking on / off rod 94 is located above the planting transmission shaft 26 on the right side of the machine body, and is arranged in parallel with the planting transmission shaft 26.

  Further, a mounting stay 95 protruding downward is provided between the front and rear of the interlocking on / off rod 94, and a fertilization clutch shifter 460a for turning on and off the mounting stay 95 and the fertilizer clutch 460 is connected by an on / off wire 96, and interlocked. When the on / off rod 94 is slid to the front side of the machine body, the on / off wire 96 moves the fertilizer clutch shifter 460a to the off side, and the planting clutch 25 is switched to the off state.

  As shown in FIG. 7, the clutch on / off motor 91 is operated when the handle potentiometer 34a detects the turning operation of the steering handle 34 when the raising / lowering operation of the seedling planting part 4 is performed by the raising / lowering button 24b. Alternatively, the lever potentiometer 24a is activated when the reverse operation of the shift lever 24 is detected, and is stopped when the on / off potentiometer 93 detects a predetermined amount of rotation of the rotation arm 92.

  The interlocking on / off rod 94 slides in the front / rear direction when the clutch on / off motor 91 is actuated to rotate the rotating arm 92, so that the mounting stay 95 also moves in the front / rear direction. Accordingly, the on / off wire 96 makes the fertilizer clutch 460 in a disconnected state, that is, when the on / off wire 96 is pulled, it is difficult for the on / off wire 96 to be loosened, so that the planting clutch 25 and the fertilizer clutch 460 are in a disconnected state. Delays are prevented and consumption of excess seedlings and fertilizers is prevented.

  Further, since the mounting stay 95 is slid in the front-rear direction, the vertical position of the mounting stay 95 does not change during sliding, so that it does not interfere with the members below and wear and damage are prevented.

  The clutch on / off motor 91 can be stopped while the fertilization clutch 460 is in the on state and the planting clutch 25 is in the off state by rotating the turning arm 92 with the clutch on / off motor 91. When the seedling planting unit 4 is lowered after turning at the end to restart seedling planting and fertilization, the fertilizer application device 100 can be brought into a driving state first.

  Planting of seedlings by the seedling planting unit 4 is started as soon as the planting clutch 25 is engaged and the driving force of the planting transmission shaft 26 is transmitted to each planting transmission case 50a. On the other hand, for fertilization by the fertilizer application device 100, the fertilizer clutch 460 is turned on, transmitted to each feeding device 61..., And then operated until the fertilizer reaches the fertilizer guide 63. There is a time lag. Thereby, when the planting clutch 25 and the fertilizer application clutch 460 are simultaneously turned on, there is a problem that the fertilizer is not supplied to the planting seedlings for several times immediately after the turning.

  To cope with this problem, as described above, when the fertilization clutch 460 is in the engaged state and the planting clutch 25 is in the disengaged state, the clutch on / off motor 91 is temporarily stopped, and then the clutch until the planting clutch 25 is in the on state. By operating the on / off motor 91, the fertilizer can reach the fertilizer guides 63 at the start of planting after turning.

  This prevents the occurrence of places where fertilizer is not supplied, so that the growth of seedlings in the entire field becomes uniform, and post-processing operations such as adding fertilizer (additional fertilization) and harvesting time are unified, Uniform quality is achieved.

  Next, the shape of the intake duct 69 that takes in air containing exhaust heat of the engine 20 into the blower 67 will be described.

  As shown in FIG. 8, the intake duct 69 is disposed behind the first fertilization support plates 102 and 102 and the second fertilization support plates 104 and 104 and between the upper and lower sides of the rear wheel 11 and the fertilization hose 62.

  In this configuration, since the vertical distance between the intake duct 69 and the rear wheel 11 is narrowed, when the diameter is increased by the mud to which the rear wheel 11 is attached, the mud is attached to the intake duct 69 or the intake duct 69 is compressed by the mud. May be.

  If mud adheres to the intake duct 69, it becomes necessary to remove the mud after the work yield, which not only increases the time and labor required for the work, but also removes the heat of the air taken in by the adhering mud, There is a problem that the temperature is lowered and the drying effect of the fertilizer and the fertilizer transport path is weakened.

  Further, if the intake duct 69 is compressed, the intake duct 69 may be damaged, and the flow of air moving inside changes, so that the blower 67 cannot supply a stable momentum of conveying air, and each fertilizer hose The fertilizer is not supplied evenly to 62..., And there is a problem that the fertilizer application accuracy is reduced, or the amount of air necessary for discharging the fertilizer cannot be secured, and the fertilizer is accumulated in the discharge duct 70.

  In order to solve this problem, as shown in FIG. 13, a concave arc surface 69 a corresponding to the convex arc surface of the rear wheel 11 is formed in the lower part of the intake duct 69, and the intake duct 69 and the rear wheel 11 are vertically The interval is widened.

  With the above configuration, even when the diameter of the mud mud with the rear wheel 11 adhered is increased, mud mud does not easily adhere to the air intake duct 69, so that the temperature of the air taken into the air intake duct 69 is prevented from lowering, and the blower 67 The fertilizer and the fertilizer transport path are dried by the transport air generated by the fertilizer, making it difficult for the fertilizer to adhere thereto, and a stable supply of fertilizer becomes possible.

  Further, since it is possible to prevent the intake duct 69 from being pressed by the mud that it contacts, the flow of air in the intake duct 69 is prevented from being disturbed, and the conveying air supplied to the fertilizer hose 62 is stabilized. As a result, the fertilizer is prevented from accumulating in the discharge duct 70, and the efficiency of the surplus fertilizer discharge operation is improved.

  Further, since the vertical distance between the intake duct 69 and the fertilization hose 62 is narrow, when the seedling planting part 4 is lowered, the fertilization hose 62 is bent in contact with the upper surface and the back surface of the intake duct 69 and has a diameter larger than that of other portions. May become smaller.

  Accordingly, when the flow of the conveying wind in the fertilizer application hose 62 changes, the time until the fertilizer reaches the fertilizer guide 63 becomes unstable, and the location where the fertilizer is supplied excessively and the supply amount of the fertilizer are increased. There is a problem in that the number of spots decreases and the growth of seedlings becomes unstable.

  In order to solve this problem, as shown in FIG. 12, a convex arcuate surface 69b is formed on the upper portion of the intake duct 69 to form a mountain shape when viewed from the side, and the fertilizing hose 62 that is in contact with the angle is not easily bent at an angle. And

  With the above configuration, the flow of the conveying air in the fertilizer hose 62 is stabilized, so the time until the fertilizer reaches the fertilizer guide 63 becomes constant, and the fertilizer amount supplied to the field and the growth of seedlings are stabilized. .

  As shown in FIG. 14, both the concave arc surface 69a and the convex arc surface 69b formed in the intake duct 69 may be formed at the same time. In this case, both effects are exhibited simultaneously.

  Next, the opening / closing amount of the hopper lid 60a of the fertilizer hopper 60 will be described.

  As shown in FIGS. 1, 6, and 12 to 14, the upper portion of the fertilizer hopper 60 is covered with a hopper lid 60 a that rotates in the vertical direction by a horizontal rotation hinge (not shown) on the rear side of the machine body. The hopper lid 60a is rotated upward during the fertilizer replenishment operation, and the hopper lid 60a is rotated downward during the operation to close the upper portion. Further, seedling replenishment guides 51c are arranged above the seedling mount 51 of the seedling planting unit 4 so that the operator can easily put seedlings from the traveling vehicle body 2.

  The fertilizer hopper 60 and the hopper lid 60a are connected by an opening / closing cooperation wire 60w. The opening / closing cooperation wire 60w regulates the rotation of the hopper lid 60a at a position where the hopper lid 60a exceeds the fulcrum, and the operator can The lid 60a is not closed unless it is rotated.

  As a result, the upward rotation amount of the hopper lid 60a, that is, a vertical posture in which the angle formed by the fertilizer hopper 60 and the hopper lid 60a is approximately 90 degrees, or the angle formed by the fertilizer hopper 60 and the hopper lid 60a is an obtuse angle. When the seedling planting part 4 rises to a predetermined height or higher in the rearward upward tilting posture, the seedling replenishment guides 51c ... come into contact with the hopper lid 60a.

  For example, when there are two workers and one of the workers is replenishing the fertilizer and another person accidentally raises the seedling planting unit 4, the seedling replenishment guide 51c. When the lid 60a is pushed and rotated, the fertilizer may not be put into the fertilizer hopper 60 and may spill around.

  Further, since the hopper lid 60a is made of resin like the fertilizer hopper 60 and is thin to reduce the weight, the hopper lid 60a may be damaged when it comes into contact with the seedling replenishment guide 51c, and a hole may be formed. When a hole is opened in the hopper lid 60a, rainwater enters from this hole during rainy weather, and the fertilizer is attached to the inside of the fertilizer hopper 60 by sticking the fertilizers together. There is a problem that the feeding devices 61 do not flow down or the feeding devices 61 cannot feed the set amount of fertilizer, and the supply amount of the fertilizer becomes unstable.

  In order to solve this problem, as shown in FIG. 15, the length of the opening / closing cooperation wire 60w provided between the fertilizer hopper 60 and the hopper lid 60a is shortened, and when the hopper lid 60a is opened, the fulcrum is exceeded and the rotation is simultaneously performed. By restricting, the hopper cover 60a is configured not to rotate backward from the posture in which the hopper cover 60a is rotated approximately 90 degrees.

  With the above configuration, the seedling replenishment guide 51c and the hopper lid 60a do not interfere with each other when the seedling planting part 4 is raised and lowered, and therefore the hopper lid 60a is closed during the replenishment of fertilizer, thereby preventing the replenishment of the fertilizer. It is prevented and the work efficiency is improved.

  Further, since it is possible to prevent the hopper lid 60a from being opened by contact with the seedling replenishment guide 51c, rainwater is prevented from entering the fertilizer hopper 60 from the hopper lid 60a, and the fertilizer becomes a lump or the fertilizer hopper 60. This prevents the set amount of fertilizer from being fertilized.

2 Traveling body 4 Seedling planting part 11 Rear wheel (traveling wheel)
16 Rear beam frame 60 Fertilizer hopper 61 Feeding device 62 Fertilizer hose (fertilizer guide member)
67 Blower (Blower member)
68 Air chamber (ventilating member)
69 Intake duct (intake member)
69a Concave arc surface (concave curve)
69b Convex arc surface (convex curve)
94 Interlocking on / off rod (switching transmission member)
95 Mounting stay (Mounting member)
100 Fertilizer Application 102 First Fertilizer Support Plate (First Fertilizer Support Member)
102a Inclined portion 103 Joint plate (gate-shaped connecting member)
104 Second fertilization support plate (second fertilization support member)
460 Fertilizer clutch

Claims (7)

A seedling planting part (4) for planting seedlings on the traveling vehicle body (2) and a fertilizer application device (100) for supplying fertilizer are provided, and a fertilization clutch (460) for turning on and off the transmission to the fertilizer application device (100) is provided, In the seedling transplanting machine provided with a clutch on / off mechanism for switching on / off of the fertilization clutch (460),
The clutch on / off mechanism includes a switching interlocking member (94) that slides linearly by an on / off operation of the fertilization clutch (460), and a bendable on / off member (96) for turning on and off the fertilization clutch (460). And a seedling transplanting machine comprising the attachment member (95) for attaching the on / off member (96) to the switching interlocking member (94).   The seedling transplanter according to claim 1, wherein the attachment member (95) is provided between both ends of the switching interlocking member (94). The fertilizer application (100) is a fertilizer switching device (400) for changing the fertilizer supply amount, a fertilizer hopper (60) for storing fertilizer, and feeding the fertilizer from the fertilizer hopper (60) by a set amount. It comprises a device (61) and a fertilizer guide member (62) for guiding the fertilizer supplied from the feeding device (61) to the field,
A fertilization support member (102, 104) for supporting the fertilizer application (100) is provided between the rear beam frame (16) of the traveling vehicle body (2) and the fertilizer application (100). The seedling transplanter according to 1 or 2.   The fertilizer application support members (102, 104) include a first support member (102) disposed below the fertilizer guide member (62) on the inner side of the fertilizer guide members (62) on the left and right outer sides, and the left and right center of the fertilizer application support members (102, 104). The seedling transplanter according to claim 3, characterized in that the seedling transplanter is constituted by a second support member (104) arranged below the fertilizer guide member (62) and on both the left and right sides.   A rearwardly inclined portion (102a) is formed at the rear of the first support member (102), and the second support member (104) is connected to the rear beam frame (16) via a gate-shaped connecting member (103). The seedling transplanter according to claim 4, wherein the seedling transplanter is provided. The fertilizer guide member (62) is provided with a ventilation member (68) for supplying conveyance air for conveying the fertilizer, and provided with a blower device (67) for supplying conveyance air to the ventilation member (68). 102, 104) is provided with an intake passage (69) through which the blower (67) takes air, and the fertilizer guide member (62) is passed above the intake passage (69).
The seedling transplanter according to any one of claims 3 to 5, wherein a convex curved portion (69b) is formed in an upper portion of the intake passage (69). A traveling wheel (11) is provided on the traveling vehicle body (2),
The fertilizer guide member (62) is provided with a ventilation member (68) for supplying conveyance air for conveying the fertilizer, and provided with a blower device (67) for supplying conveyance air to the ventilation member (68). 102, 104) and above the traveling wheel (11), an air intake passage (69) through which the air blower (67) takes in air is provided,
The seedling transplanter according to any one of claims 3 to 5, wherein a concave curved portion (69a) is formed in a lower portion of the intake passage (69).

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