JP2009232714A - Riding-type seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems for carrying out an operation for taking out a remaining fertilizer by a simple construction without requiring a lifting and lowering mechanism such as a dumper in a riding-type seedling transplanter equipped with a fertilizer hopper and a quantitative sending-out device at the rear side of a riding seat. <P>SOLUTION: The riding-type seedling transplanter is constituted by installing the fertilizer hopper 60 and the sending-out device 57 in the rear side of a seat for riding, constituting a rear wall plate 54 covering the rear side of a machine frame 49 of the sending-out device 57 so as to be openable to the rear and lower direction by a lower-side by a lower-side pivot shaft 53, and forming a space part 120 for receiving the fertilizer tumbling down from the upper side of a rear wall plate 54 opened in the rear and lower direction at the lower side of the rear wall plate 54 opened in the rear and lower direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fertilizer application device for a riding seedling transplanter that can easily perform maintenance of a fertilizer application device provided at a rear portion of a control seat with a simple configuration.

A riding seedling planting machine is provided with a fertilizer application device that applies fertilizer near the planted seedling at the same time as planting the seedling. This fertilizer applicator is made up of a fertilizer hopper and a metering device, as described in Japanese Patent Application Laid-Open No. 10-295117, for example.
JP-A-10-295117

  Since the above-mentioned quantitative operation device is provided with an opening for taking out the fertilizer remaining in the machine at the end of the work on the seat side, the fertilizer remaining in the machine cannot be taken out from the opening at the same position. For this purpose, the fertilizer hopper and the quantitative operation device are lifted higher than the seat by a lift mechanism such as a damper, and the residual fertilizer is discharged out of the machine from the opening.

  Therefore, in the present invention, a riding seedling transplanter provided with a fertilizer hopper and a quantitative operation device on the rear side of the passenger seat can take out the residual fertilizer with a simple configuration without requiring a lifting mechanism such as a damper. The challenge is to do so.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, a fertilizer hopper (60) and a steering device (57) are provided on the rear side of the passenger seat, and the rear wall covers the rear side of the machine frame (49) of the steering device (57). The rear wall plate (54) is configured such that the plate (54) can be opened rearward and downward, and is projected rearward from the operation device (57) below the rear wall plate (54) opened rearward and downward and opened rearward and downward. It was set as the riding seedling planting machine provided with the space part (120) which receives the fertilizer which falls from.

  With this configuration, when the seedling planting operation is completed, the fertilizer remaining in the fertilizer hopper 60 and the operation device 57 opens the rear wall plate 54, so that the residual fertilizer in the operation device 57 is removed from the space portion. Receive at 120 and take out.

  In the first aspect of the present invention, the conventional fertilizer hopper 60 and the maneuvering device 57 are fixed to the airframe rather than the conventional configuration in which the manure hopper 60 and the maneuvering device 57 are raised to take out the residual fertilizer in the maneuvering device 57. Since the residual fertilizer can be taken out in the space portion 120 simply by opening the rear wall plate 54 that covers the rear side of the machine frame 49 of the operation device 57, a component that lifts the fertilizer hopper 60 such as a damper and the operation device 57 Further, there is no need for an elevating support structure, the manufacturing cost can be reduced, and the simple structure of simply opening the rear wall plate 54 reduces the possibility of failure.

Embodiments of the present invention will be described below with reference to the drawings.
FIG.1 and FIG.2 is the side view and top view of a riding type rice transplanter with a fertilizer applicator equipped with a fertilizer applicator according to an embodiment of the present invention. In this riding type rice transplanter 1 with a fertilizer application device, a seedling planting device 52 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting device 52 can be moved up and down. Is provided.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached.

  The front end of the main frame 15 is fixed to the rear portion of the transmission case 12, and the left and right 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. , 18 are supported in a freely rolling manner, and rear wheels 11, 11 are attached to a rear wheel axle 17 projecting outwardly from the left and right rear wheel gear cases 18, 18.

  The power is transmitted to the left and right rear wheel gear cases 18 and 18 by the left and right rear wheel transmission shafts 18a and 18a connected to the left and right rear wheel gear cases 18 and 18 provided to protrude from the rear wall of the transmission case 12. It has become.

  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 the belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the 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 cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the left and right rear wheel gear cases 18 and 18 to drive the left and right rear wheels 11 and 11. . In addition, the external extraction power extracted from the right side surface of the mission case 12 is transmitted to the seedling planting device 52 by the planting transmission shaft 26. The power is taken out from the right rear wheel gear case 18 by the drive shaft and transmitted to the fertilizer feeding mechanism of the fertilizer applicator 5.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. A reservoir tank 16 is provided in the front cover 32 and is connected to the HST 23 by a pipe 19 so that oil is supplied to the HST 23 from a high position.

The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end.
A plurality of through holes 35a... Are formed in the left and right front portions of the floor step 35 so that a driver who is seated on the seat 31 and controls the aircraft can see the left and right front wheels 10 and 10 and is easy to control. In addition, the mud on the shoe of the worker walking in the step 35 falls to the field. The rear portion of the floor step 35 is a rear wheel fender 36 that also serves as a rear step.

Further, on both the left and right sides of the front part of the traveling vehicle body 2, the spare seedling platforms 38, 38 on which the replenishment seedlings are placed can be pivoted to a position projecting laterally from the machine body and a position housed inside. Is provided.
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, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side. ing. A connecting shaft 44 that is rotatably supported by the seedling planting device 52 is inserted into and connected to the lower end portion of the vertical link 43, and the seedling planting device 52 is connected so as to be able to roll around the connecting shaft 44. A sensing member 93 that senses the raising and lowering of the center float 55 is provided at a position surrounded by the frame 94 of the seedling planting device 52.

  A lifting hydraulic cylinder 46 whose base is pivotally supported on the main frame 15 is connected to a leading end of a swing arm (not shown) integrally formed with the upper link 40. Is hydraulically expanded and contracted, the upper link 40 is rotated up and down, and the seedling planting device 52 is lifted and lowered with a substantially constant posture.

  The seedling planting device 52 has a four-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating motion to feed the seedlings to the seedling outlet 51a. When all the seedlings for one row are supplied to the seedling outlet 51a ..., the seedling mounting platform 51 for transferring the seedling downward by the seedling feeding belt 51b ..., the seedling supplied to the seedling outlet 51a ... in the field A seedling planting device 52 to be planted, and a pair of left and right drawing markers (not shown) for drawing the aircraft path in the next stroke to the topsoil surface are provided.

  FIGS. 4 and 5 show a configuration of two auxiliary seedling platforms 110a and 110b that are placed on the seedling platform 51 to increase the amount of seedling mats placed, and the fence 113 is sandwiched between the upper ends of the seedling platform 51. The rear receiving plate 112 is provided, and the rear receiving plate 112 is further provided with a reinforcing material 111. The back plate 112 is positioned in the left-right direction, and the reinforcing material 111 prevents the forward tilt.

  In the lower part of the seedling planting device 52, a center float 55 is provided in the center, and side floats 56a and 56b are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56a, 56b in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52.・ ・ Seedlings are planted. Each float 55, 56a, 56b is rotatably attached so that the front end side moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is the sensing member 93 during planting work. The planting depth of the seedling is detected by switching the hydraulic valve that controls the hydraulic oil hydraulic cylinder 46 according to the detection result, and raising and lowering the seedling planting device 52 according to the detection result. Always keep the height constant.

  The fertilizer application device 5 feeds out the granular fertilizer stored in the fertilizer hopper 60 with a certain amount by the feeding unit 61... Of the operation device 57, and the fertilizer is floated 55, 56 a, 56 b by the fertilizer hose 62. To the fertilizer application guides 62a attached to the left and right sides of the fertilizer, and dropped into the fertilizer structure formed near the side of the seedling planting strips by the grooved body 62b provided on the front side of the fertilizer guides 62a. It is like that. Air generated by a blower 58 driven by an electric motor is blown into a fertilizer hose 62... Via a long air chamber 59 in the left-right direction, and fertilizer in the fertilizer hose 62. Is forcibly transported to The air suction port of the blower 58 is opened toward the engine 20 on the inner side of the machine body so as to suck the exhaust gas of the engine 20.

  The steering device 57 is the same as the conventional configuration in which a steering shaft having a recessed groove formed in the outer periphery in a horizontally long machine frame is horizontally mounted, and a rear wall plate 54 constituting the rear side of the machine frame 49 has a lower end. The upper support shaft 53 is pivoted, and the upper side of the rear wall plate 54 is removed and then tilted downward to roll out the fertilizer remaining inside.

  On the left side of the machine frame 49, a dial gear 47 is provided in accordance with the number of operation adjusting gears for adjusting the fertilizer operation amount of the operation shaft. A piano wire 48 to be stopped is attached to the front side of the machine frame. Since the tooth position of the dial gear 47 is made to correspond to the tooth position of the steering adjustment gear, the assembly position can be easily adjusted when the steering adjustment gear is assembled.

  Further, the receiving plate 39 is projected rearward from the machine frame 49, and a residual fertilizer that is rolled down by turning the rear wall plate 54 downward and downward is received on a receiving tray placed on the receiving plate 39. However, the receiving plate 39 is used as a stepping step when placing the seedling mat on the seedling mount 51 or supplying fertilizer to the fertilizer hopper 60. The front side of the receiving plate 39 is a flat surface to prevent the fertilizer from spilling to the lifting hydraulic cylinder 46 side, and the rear side is provided with a plurality of holes 29.. I am doing so.

  The seedling planting device 52 is provided with a leveling rotor 27 (left and right leveling rotors 27a and 27b arranged in front of each of the left and right side floats 56a and 56b) for leveling and leveling the mud surface where the field is disturbed. The seedling stage 51 is configured to slide in the left-right direction with a support roller using a rectangular support frame body 65 whose base is fixed to a transmission case 50 that also serves as a frame of the seedling planting device 52 as a rail.

Reference numerals 28 and 28 are left and right auxiliary steps, which are steps for placing a foot when an operator gets on and off the aircraft.
Next, the support structure and drive configuration of the leveling rotor 27 will be described.

  Linked to the lower ends of mounting rods 67a and 67b supported by the slide mechanism A on the support rods 66a and 66b for suspending the floats 55, 56a and 56b from the left and right intermediate portions of the support frame body 65 of the seedling stage 51. Then, the leveling rotor support frame 68 is provided, and the transmission case 90 is attached to the left and right center of the leveling rotor support frame 68 so as to be slightly tiltable to the left and right. The links 64a and 64b that connect the mounting rods 67a and 67b and the leveling rotor support frame 68 connect the one pin 37 of the link 64 to the elongated hole 63a provided in the suspension fitting 63 of the leveling rotor support frame 68 so that the ground leveling rotor 63 can move freely. The rotor support frame 68 can be tilted slightly to the left and right.

  The left and right mounting shafts 69a and 69b are connected to the drive shafts 70a and 70b protruding left and right from the transmission case 90, respectively, and the left and right outer ends of the mounting shafts 69a and 69b are connected to the side support frames 68a and 68b of the leveling rotor support frame 68. It is pivotally supported. Left and right leveling rotors 27a and 27b are mounted on the left and right mounting shafts 69a and 69b so as to rotate integrally with the cylindrical bodies 71 and 71 therebetween.

  The transmission case 90 is attached to the left and right center of the leveling rotor support frame 68 with a bracket 92, and the front side of the transmission case 90 is a connecting shaft that connects the lower side of the left and right vertical links 43 constituting the lifting link device 3 with two rods 78 and 78. It is attached to a support member 45 provided at the left and right center of 44 so as to be vertically slidable. Further, an interlocking rod 80 is pivotally supported by a pin 81 on the front projecting portion 84 of the leveling rotor support frame 68, and the interlocking rod 80 is connected to a pin 83 of the upper link 40 constituting the elevating link device 3 by an elongated hole 82. Yes.

  Plate brackets 85 and 85 are attached to the support rods 66a and 66b, and the mounting rods 67a and 67b are slidable up and down by four double roller 72 provided on the brackets 85 and 85, respectively, and the ground leveling is performed on the upper side. The end portions of the rotor vertical position adjusting levers 74a and 74b are pivotally supported, and the bent portions 88 of the leveling rotor vertical position adjusting levers 74a and 74b are locked near the gripping portion 86 of the leveling rotor vertical position adjusting levers 74a and 74b. A concave groove 87 is provided on the bracket 85 side, and the leveling rotor vertical position adjusting levers 74a and 74b can be adjusted up and down by changing the position of the concave groove 87 for locking the bent portion 88. A pin 73 provided at the upper ends of the support members 66a and 66b hits the bent portion 88 of the leveling rotor vertical position adjusting lever 74 to limit the raising of the leveling rotor support frame 68 to the seedling planting device 52. Further, a tension spring 77 is provided between a pin 75 provided near the lower ends of the mounting rods 67a and 67b and a pin 76 provided on the support frame body 65 side to suspend the leveling rotor support frame 68.

The power transmission to the transmission case 90 that rotationally drives the left and right leveling rotors 27a and 27a is as shown in FIG.
An input shaft 95a of a rotor drive case 95 provided at the left and right center of the machine body and a rotor side output shaft 18b protruding from the left gear case 18 toward the center are connected by a joint 96 to transmit power. The rotation of the input shaft 95a is transmitted to the rotor drive shaft 95d by the bevel gears 95b and 95c via the clutch 97. A boss portion 99 fixed to one end of the outer shaft 98 is fixed to the input shaft 90a of the transmission case 90, and the inner shaft 101 spline-fitted to the boss portion 100 fixed to the other end of the outer shaft 98 is jointed to the rotor drive shaft 95d. 102, the rotation of the rotor drive shaft 95d is transmitted to the input shaft 90a. The outer periphery of the inner shaft 74 is wrapped with a stretchable boot 103, and the stretchable boot 103 side is positioned higher on the front side of the machine body, so that muddy water does not enter the fitting portion with the boss portion 85.

  Since the rotor drive case 95 is provided at the center of the left and right sides of the airframe, the positional relationship with the transmission case 12 does not change even if the left and right rear wheels 11 are moved up and down, and the rotor drive shaft 95d is moved up and down by the vertical movement of the transmission case 90. The rotation is performed around the input shaft 95a, and the change in the distance between the rotor drive case 95 and the transmission case 90 is absorbed by the sliding of the outer shaft 98 and the inner shaft 101.

If the clutch 97 is not provided in the rotor drive case 95, the rotor drive case 95 and the transmission case 90 can have the same shape so that the parts can be shared and the manufacturing cost can be reduced.
The clutch 97 of the rotor drive case 95 is used to connect and disconnect the drive force to the transmission case 90. One end of the operation wire W is linked to a shifter (switching tool) of the clutch 97 and is operated by the leveling rotor clutch lever 106. The configuration is such that the wire W is actuated and the power to the rotor drive shaft 95d is turned on and off to switch between the state where the leveling rotor 27 is driven and the state where it is stopped. Alternatively, the other end of the operation wire W is linked to the leveling rotor vertical position adjusting levers 74a and 74b and the lifting link device 3, and the vertical position adjusting operation when the leveling rotor 27 is used by the leveling rotor vertical position adjusting levers 74a and 74b. The leveling rotor 27 is driven when the clutch 97 is engaged. When the leveling rotor 27 is moved up to the storage position by the leveling rotor vertical position adjusting levers 74a and 74b, the clutch 97 is turned off and the leveling rotor 27 stops. You may make it be in the state.

  Further, when the seedling planting device 52 is lowered to the planting operation state by the elevating link device 3, the clutch 97 is engaged and the leveling rotor 27 is driven, and the seedling planting device 52 is brought to the non-planting operation state. When lifted by the lift link device 3, the clutch 97 is disengaged and the leveling rotor 27 is stopped.

  As shown in FIG. 10, the leveling rotor clutch lever 106 is provided so that the clutch can be engaged and disengaged by tilting left and right to a lever guide 105 provided on the right side of the connecting rod 104 that connects the left and right support members 66a and 66b. . A lever guide 109 provided on the left side of the connecting rod 104 is provided with a planting depth adjusting lever 107 and a seedling amount adjusting lever 108.

Next, the vertical position adjustment operation of the leveling rotor 27 will be described.
The seedling planting device 52 is moved up and down with respect to the traveling vehicle body 2 by the lifting link device 3, but when the support frame body 65 of the seedling planting device 52 is lifted, the leveling rotor support frame 68 of the leveling rotor 27 is tension spring. Since it is suspended by the support frame 65 at 77, it rises together. When the upper limit is approached, the elongated hole 82 of the interlocking rod 80 pivotally supported by the pin 81 on the front projecting portion 84 of the leveling rotor support frame 68 hits the pin 83 of the upper link 40 and extends the tension spring 77 to extend the leveling rotor support frame 68. As shown in FIG. 6, the leveling rotor support frame 68 does not hit the planting transmission shaft 26.

  When the seedling planting device 52 is lowered and the center float 55 and the side floats 56a and 56b are grounded, the leveling rotor 27 is also grounded. However, since the leveling rotor support frame 68 is allowed to tilt to the left and right, the leveling rotor 27 is also in the field. Accommodates to some degree of unevenness.

It is a side view of a riding type rice transplanter. It is a top view of a riding type rice transplanter. It is an enlarged side view of a fertilizer applicator. It is a front view of an auxiliary seedling stand. It is sectional drawing of the left side of an auxiliary seedling stand. It is an enlarged rear view of a leveling rotor. It is a mounting part enlarged side view of a leveling rotor. It is a mounting part enlarged front view of a leveling rotor. It is a side view which shows the raising / lowering action state of a leveling rotor. It is a plane sectional view of the driving force transmission part of a leveling rotor. It is a rear view of a seedling planting apparatus.

Explanation of symbols

39 Receptacle 49 Machine Frame 53 Pivot Shaft 54 Rear Wall Plate 57 Feeder 60 Fertilizer Hopper

Claims (1)

A fertilizer hopper (60) and a steering device (57) are provided on the rear side of the passenger seat, and the rear wall plate (54) covering the rear side of the machine frame (49) of the steering device (57) is opened rearward and downward. A space that receives the fertilizer falling from the rear wall plate (54) that is configured to be possible and that projects rearward from the steering device (57) and opens rearward and downward on the lower side of the rear wall plate (54) that is opened rearward and downward. A riding seedling planting machine.

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