JP5136464B2 - Seedling planting machine - Google Patents

Description

The present invention relates to a mounting structure of a leveling rotor provided between a traveling vehicle body and a seedling planting device of a seedling planting machine .

  In the seedling planting machine, a ground leveling rotor is provided on the front side of the field leveling float of the seedling planting system, and the seedling planting system is planted while leveling the muddy soil surface in the field with the leveling rotor and float. Nail seedlings are planted in the field. For example, a seedling planting machine described in Japanese Patent Application Laid-Open No. 2007-300873 describes a configuration in which a center leveling rotor and a left and right leveling rotor are provided on the front side of a center float and a side float of a seedling planting device, respectively (patent) Reference 1).

JP 2007-300903 A

  The left and right ground leveling rotor provided on the front side of the side float is rotatably attached to the lower end of the left and right leveling rotor support frame whose support shaft extends downward from the support frame body of the seedling stage. Near the lower end is connected to a transmission case that also serves as a frame of the seedling planting device by a left and right connecting member with a base rotatably attached. For this reason, since the right and left leveling rotor provided on the left and right leveling rotor support shaft moves up and down together with the seedling planting device, the seedling planting depth of the seedling planting device is likely to fluctuate as the left and right leveling rotor moves up and down.

  Therefore, in the present invention, it is an object to make the seedling planting depth of the seedling planting device uniform without raising and lowering the seedling planting device even when leveling the muddy soil surface where the left and right ground leveling rotor is disturbed It is.

The problems of the present invention are solved by the following technical means.
That is, the invention according to claim 1 is the seedling planting device (52) in the seedling planting machine in which the seedling planting device (52) is mounted on the rear side of the traveling vehicle body (2) via the lifting link device (3). Is provided with a leveling rotor (27) for leveling and leveling the mud surface of the field, and is fitted to the outer shaft (98) and the outer shaft (98) from the rotor driving shaft (95d) of the rotor driving case (95). It is configured to transmit to the transmission case (90) via the inner shaft (101) and the joints (96, 102), and the left and right mounting shafts are attached to the drive shafts (70a, 70b) protruding left and right from the transmission case (90). (69a, 69b) are connected, the mounting shaft (69a, 69b) and the leveling rotor (27) rotate integrally, and the outer shaft (98) and the inner shaft (101) are moved by the vertical movement of the transmission case (90). The vehicle body (2) and the seedling planting device (52 Naeno between the mounting rod (67a, 67b) of the ground leveling rotor supporting frame (68) and suspended through the rear falling linear slide mechanism upward (A), the seedling planting apparatus (52) A grounding rotor support frame (68) is supported on the support frame body (65) of the seedling stage (51) via the slide mechanism (A), and the mounting rods (67a, 67b) are provided. The leveling rotor support frame (68) is supported so as to be tiltable to the left and right via links (64a, 64b) connected to the lower end, and the rod (78) is attached to the support member (45) provided in the lifting link device (3). The transmission case (90) is attached so as to be slidable up and down, and the rising and lowering link device (3) is configured to regulate the rising of the leveling rotor support frame (68) via the interlocking rod (80). Planting (3) The clutch (97) that drives the leveling rotor (27) when it is lowered to the working state and stops the leveling rotor (27) when the lifting link device (3) is raised to the non-planting operation state. A seedling planting machine is provided .

With this configuration, the ground leveling rotor (27) is tilted backward by the slide mechanism (A) and linearly upwards independently of the seedling planting device (52) between the traveling vehicle body (2) and the seedling planting device (52). Go up and down .

Therefore, since the vertical movement of the transmission case 90 can be absorbed by the slide between the outer shaft 98 and the inner shaft 101, the change in the distance between the rotor drive case 95 and the transmission case 90 can be absorbed. The thickness can be made uniform. In addition, the left and right leveling rotors 27a and 27b are arranged within an interval in which the traveling vehicle body 2 and the seedling planting device 52 are arranged close to each other, and the left and right leveling rotors 27a and 27b are tilted backward by the slide mechanism A within the interval. Since it moves up and down linearly, the seedling planting device 52 has little vertical movement, so that the planting depth of the seedling can be made uniform, and the length of the body from the front end of the traveling vehicle body 2 to the rear end of the seedling planting device 52 It can be configured as a short-turning seedling planter.
Furthermore , since the horizontal inclination of the leveling rotor support frame 68 is allowed, the leveling rotor 27 can adapt to the unevenness of the field. Moreover, the leveling rotor 27 can be driven by the clutch 97 when the lifting link device 3 is lowered to the planting operation state, and the leveling rotor 27 is moved when the lifting link device 3 is raised to the non-planting operation state. You can stop.

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.

An embodiment 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 the 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, 67b supported by the slide mechanism A on the support rods 66a, 66b for suspending the floats 55, 56a, 56b from the left and right intermediate portions of the support frame 65 of the seedling stage 51 by links 64a, 64b. 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 ground leveling rotors 27a, 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 100.

  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 drive 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 to switch the power to the rotor drive shaft 95d on and off to drive the leveling rotor 27 and to stop it. 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.

A: slide mechanism, 2: traveling vehicle body, 3: lifting / lowering link device, 27: leveling rotor, 52: seedling planting device, 67a, 67b: mounting rod, 68: leveling rotor support frame, 69a, 69b: mounting shaft, 70a , 70b: Drive shaft, 90: Transmission case, 95: Rotor drive case, 95d: Rotor drive shaft, 96, 102: Fitting, 98: Outer shaft, 101: Inner shaft

Claims (1)

In the seedling planting machine in which the seedling planting device (52) is mounted on the rear side of the traveling vehicle body (2) through the lifting link device (3), the seedling planting device (52) levels the mud surface of the field. A leveling leveling rotor (27) is provided, and from the rotor drive shaft (95d) of the rotor drive case (95) to the outer shaft (98), the inner shaft (101) and the joint (96, 96) fitted to the outer shaft (98) 102), and the left and right mounting shafts (69a, 69b) are connected to the drive shafts (70a, 70b) protruding left and right from the transmission case (90), The mounting shafts (69a, 69b) and the leveling rotor (27) rotate integrally, and the outer shaft (98) and the inner shaft (101) slide by the vertical movement of the transmission case (90). Leveling rotor support frame between plant and seedling planting device (52) Mounting rod (67a 68), the 67b), suspended through the rear falling linear slide mechanism upward (A), comprising Naeno stand the (51) to the seedling planting apparatus (52),該苗Links (64a, 64b) supporting the leveling rotor support frame (68) on the support frame (65) of the mounting base (51) via the slide mechanism (A) and connected to the lower ends of the mounting rods (67a, 67b). ) To support the leveling rotor support frame (68) so as to be tiltable to the left and right, and to the support member (45) provided in the lift link device (3), the transmission case (90) is connected to the support member (45) via the rod (78). Mounted so as to be vertically slidable and configured to regulate the lifting of the leveling rotor support frame (68) via the interlocking rod (80) by the lifting of the lifting link device (3), and the lifting link device (3) is lowered to the planting work state. When you are It drives the earth rotor (27), lifting linkage (3) When a is increased to a non-planting conditions, seedling planting machine formed by providing a clutch (97) to stop the leveling rotor (27).

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