JP3690047B2 - Ride type rice transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a riding type rice transplanter.
[0002]
[Problems to be solved by the invention]
A riding type rice transplanter in which a rice transplanter is mounted on the rear side of a traveling unit through a lifting link mechanism so as to be movable up and down, and side floats having horizontal field sliding surfaces are provided on both sides of the lower part of the rice planting device. -The mudflow or water flow generated by the sliding of the farm field affects the sides, and a huge amount of mudwater accumulates in front of the side float, which greatly changes the bearing capacity of the rice transplanter due to the buoyancy of the float. As a result, the lifting / lowering of the lifting / lowering link mechanism during rice transplanting may become unstable.
[0003]
[Means for Solving the Problems]
The present invention has taken the following technical means to solve the above problems.
That is, the rice transplanter 2 is mounted on the rear side of the traveling unit 4 including the traveling wheels 14 and 18 and the cockpit 30 so as to be movable up and down via the lifting link mechanism 26, and the horizontal field is formed on both sides of the lower part of the rice transplanter 2. A link mechanism 51 in which a side float 45 having a sliding surface 45 a is provided , and the ground work device 1 is disposed on the front side of the rice transplanter 2 on the rear side of the traveling unit 4, and the ground work device 1 is attached to the rice transplanter 2. The power from the engine 5 provided in the traveling unit 4 is transferred from one of the two engine output pulleys 6 to the traveling wheels 14 and 18 and the rice transplanting apparatus 2 via the transmission belt 7. In the riding type rice transplanter configured to be transmitted and transmitted from the other of the two engine output pulleys 6 to the ground work device 1 via another transmission belt 21, the muddy water flow fixed to the side float 45. Suppression Telescopic rod 56 the mud flow passing port 64 is provided away the front end of the rear end of the plate 63 field sliding surface 45a, expands and contracts in the vertical direction by the rotation of the upper and lower adjusting handle 53 provided on the upper side of the ground working device 1 The pivot angle 53a of the vertical adjustment handle 53 is provided forward with respect to the telescopic rod 56 by a bevel gear, and the traveling wheels 14 and 18 and the rice transplanter 2 are adjusted. Riding type rice transplanter in which a main clutch pedal 38 for operating to cut off the power to the ground is provided in the traveling unit 4 and another clutch pedal 38 for operating to cut off the power to the ground work device 1 is provided on the upper side of the main clutch bedal 37. It was a machine.
[0004]
[Effects of the invention]
Therefore, the rice transplanter 2 is mounted on the rear side of the traveling unit 4 including the traveling wheels 14 and 18 and the cockpit 30 so as to be movable up and down via the lifting link mechanism 26, and the horizontal field is formed on both sides of the lower part of the rice transplanter 2. A link mechanism 51 in which a side float 45 having a sliding surface 45 a is provided , and the ground work device 1 is disposed on the front side of the rice transplanter 2 on the rear side of the traveling unit 4, and the ground work device 1 is attached to the rice transplanter 2. The power from the engine 5 provided in the traveling unit 4 is transferred from one of the two engine output pulleys 6 to the traveling wheels 14 and 18 and the rice transplanting apparatus 2 via the transmission belt 7. In the riding type rice transplanter configured to be transmitted and transmitted from the other of the two engine output pulleys 6 to the ground work device 1 via another transmission belt 21, the muddy water flow fixed to the side float 45. Deterrence Since the muddy water flow passage port 64 is provided by separating the rear end of 63 and the front end of the field sliding surface 45a, the muddy flow or water flow in front of the side float 45 does not flow to the side of the aircraft by the muddy water flow restraint plate 63. Thus, the mud flow or the water flow generated by the sliding of the field of the float 45 is not affected sideways, and the muddy water in front of the side float 45 is slightly lateral to the side from the muddy water flow passage port 64. As a result of the escape, a large amount of muddy water is accumulated in front of the side float 45, so that the support force of the rice transplanter 2 due to the buoyancy of the float 45 greatly fluctuates, and the lifting and lowering of the lifting link mechanism 26 during rice transplanting is unstable. Can be prevented.
In addition, the link angle of the link mechanism 51 is adjusted via the telescopic rod 56 that expands and contracts in the vertical direction by the rotation of the vertical adjustment handle 53 provided on the upper side of the ground work device 1. Since the shaft 53a is provided forward with respect to the telescopic rod 56 by the bevel gear, the operator who is riding the traveling unit 4 can operate the vertical adjustment handle 53. Furthermore, the main clutch pedal 37 provided in the traveling unit 4 can be operated to cut off the power to the traveling wheels 14 and 18 and the rice transplanter 2, and another clutch pedal 38 provided on the upper side of the main clutch pedal 37 can be provided. The power to the ground work apparatus 1 can be cut by operating.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an agricultural work machine 3 with a ground working device in which a scraping device 1 which is an example of a ground working device and a rice planting device 2 mounted on the rear side of the ground scraping device 1 are mounted. That is, the farm work machine 3 with the ground device device is a riding type rice transplanter with a scraping device in which the scraping device 1 and the rice planting device 2 for 6 strips are mounted on the rear side of the traveling unit 4. This riding type rice transplanter with an alternative scraping device is capable of planting rice at the same time as the field scraping by operating the alternative scraping device 1 and the rice transplanting device 2 while the vehicle is traveling by driving the traveling unit 4.
[0006]
An engine 5 serving as a drive source is provided at the center of the traveling unit 4 in the front, rear, left, and right. A relay pulley is connected from one of two engine output pulleys 6 provided on the left side of the engine 5 via a transmission belt 7. The relay shaft 9 that rotates integrally with the rear 8 is driven. The relay shaft 9 is provided with a hydraulic pump 10. Accordingly, the hydraulic pump 10 is driven as the engine 5 is driven. The power of the relay shaft 9 is transmitted to an auxiliary transmission 11 which is a belt-type continuously variable transmission, and a main clutch (not shown) capable of interrupting the transmission from the auxiliary transmission 11 is provided. It is transmitted into the mission case 12. The pair of left and right front wheels 14 and 14 are driven and rotated by the drive of the front wheel drive shafts 13 and 13 protruding from the left and right ends of the mission case 12 by the power from the mission case 12, respectively. Rear wheels provided in the rear wheel transmission cases 16, 16 are transmitted from the mission case 12 through the left and right rear wheel transmission shafts 15, 15 into the left and right rear wheel transmission cases 16, 16. The pair of left and right rear wheels 18 and 18 are driven by driving shafts 17 and 17, respectively. The rear wheels 18 and 18 are provided so as to be freely rollable in the left-right direction with respect to the traveling unit 4 and follow the unevenness of the cultivator in the field. Therefore, the traveling unit 4 is configured to travel by driving these traveling wheels 14, 14, 18, 18. The power from the mission case 12 is transmitted to the rice transplanter 2 by a planting transmission shaft 19 provided so as to pass the right side of the engine 5. A planting clutch case 20 is provided in the middle of the planting transmission shaft 19, and a planting clutch for turning on and off the transmission of power to the rice planting device 2 is installed in the planting clutch case (see FIG. Not shown).
[0007]
Further, power is transmitted from the other of the two engine output pulleys 6 to the scraping drive counter case 23 via the scraping transmission belt 21 and the driven pulley 22. The power from the scraping drive counter case 23 is transmitted to the scraping device 1 via the scraping transmission shaft 24. In addition, a tension pulley 25 is provided on the scraping transmission belt 21, and the transmission of power to the scraping device 1 can be turned on and off by the action and non-operation of the tension pulley 25. .
[0008]
An elevating link mechanism 26 is provided at the rear part of the traveling unit 4, and the elevating link mechanism 26 is arranged so as to sandwich one upper link 26 a and two upper links 26 a in the horizontal direction in plan view. The lower links 26b and 26b are provided. A vertical link 26c for connecting the upper link 26a and the lower links 26b, 26b is provided at the rear portion of the elevating link mechanism 26. A detachable hitch 27 that can be attached to and detached from the vertical link 26c and a base portion integrated with the hitch 27 are provided. The rice transplanter 2 is mounted via the frame 28. The lifting link mechanism 26 is provided so as to rotate up and down by expansion and contraction of a hydraulic lifting cylinder 29 that is operated by hydraulic pressure from the hydraulic pump 10, and the rice transplanter 2 is moved up and down by the rotation of the lifting link mechanism 26. It is the composition to do.
[0009]
Further, the traveling unit 4 is provided with a cockpit 30 on the upper side of the engine 5, and a steering handle 31 is provided on the front side of the cockpit 30. By operating the steering handle 31, the turning angle of the left and right front wheels 14, 14 is operated to control the traveling direction of the traveling unit 4. On the right side of the steering handle 31, an auxiliary transmission lever 32 that can perform a shifting operation of the auxiliary transmission 11 is provided. A main transmission lever 33 is provided on the left side of the steering handle 31. By operating the main transmission lever 33, the meshing of the gears in the mission case 12 is switched to change the vehicle speed of the airframe to "road running speed". , “Planting work speed” and “reverse speed” can be switched. A throttle lever 34 that can adjust the rotational speed of the engine 5 is provided below the steering handle 31, and the rotational speed of the engine 5 can be adjusted by operating the lever 34 in the front-rear direction.
[0010]
Further, a planting / elevating lever 35 is provided on the right side of the cockpit 30, and the planting / elevating lever 35 has an “up” position for raising the elevating link mechanism 26, and an elevating link mechanism 26 is arbitrarily set. The rice planting device 2 is operated by operating the planting clutch in the planting clutch case 20 in the state of “fixed” position to be fixed at the position, “descent” position in which the elevator link mechanism 26 is lowered, and the elevator link mechanism 26 is lowered. There are four “planting” positions to turn on the transmission. That is, by operating the planting / elevating lever 35, the rice transplanter 2 can be turned on and off, and the elevating link mechanism 26 can be elevated. A lowering lock lever 36 is provided on the left side of the cockpit 30, and the lowering of the elevating link mechanism 26 is regulated by the operation of the lowering lock lever 36 regardless of the operation position of the planting / elevating lever 35. Yes.
[0011]
A main clutch pedal 37 is provided on the lower left side of the steering handle 31, and when the main clutch pedal 37 is depressed, the main clutch in the mission case 12 is operated to drive the wheels 14, 14, 18, 18, and The power to the rice transplanter 2 is cut off. A scraping clutch pedal 38 is provided above the main clutch pedal 37, and the tension pulley 25 of the scraping transmission belt 21 is switched to a non-actuated state by depressing the scraping clutch pedal 38, and the power to the scraping device 1 is increased. It has come to sever. In addition, this scratching clutch pedal 38 can fix the operating position of the pedal 38 in the depressed state. Further, on the right side below the steering handle 31, brake pedals 39, 39 for braking the left and right rear wheels 18, 18, respectively, are provided.
[0012]
The rice planting apparatus 2 is mainly composed of a seedling mounting table 41, a planting transmission part 42 and a seedling planting mechanism 43 for six strips, and the power of the planting transmission shaft 19 is input to the planting transmission part 42 to operate. It has become. Further, at the lower part of the rice transplanter 2, two center floats 44, 44 are provided at the center and side floats 45, 45 are provided at both sides so as to slide in the field scene. These floats 44, 44, 45, 45 are attached to the rear part so as to be rotatable about a horizontal rotation shaft 46..., And the vertical inclination posture can be changed. The two center floats 44, 44 are configured such that their front portions are connected by a connecting member 47 so that the inclined postures in the vertical direction are the same. When the planting / elevating lever 35 is in the "down" position or the "planting" position, the elevating link mechanism 26 is controlled to elevate by detecting the vertical inclination of the center floats 44, 44. Thus, the height of the rice transplanter 2 with respect to the field scene is always constant. Further, the seedling placement table 41 is moved left and right by the power from the planting transmission unit 42 in accordance with the operation of the seedling planting mechanism 43... And the mat-like seedlings are scraped one by one by the seedling planting mechanism 43. It has become. The seedling mounting table 41 has a known configuration in which mat-shaped seedlings are sequentially transferred to the seedling planting mechanism side along the seedling mounting table 41 by the seedling feeding belts 48 of the respective strips at the left and right end of movement.
[0013]
The scraping device 1 is provided on the rear side of the traveling unit 4 and in front of the rice planting device 2, and parallel link mechanisms 51 and 51 attached to the planting transmission case 42 a of the planting transmission unit 42 of the rice planting device 2. A front scraping device support frame 52 is provided at the front end of the paddle and is supported by the rice transplanter 2 by the parallel link mechanisms 51 and 51. On the upper side of the scraping device 1, a scraping device vertical adjustment handle 53 is provided. A handle guide 55 is provided at the front end of the handle support frame 54 fixed to the planting transmission case 42a of the rice transplanter 2 and is pivotally attached by a pivot shaft 55a in the left-right direction. It is configured to be connected to the above-mentioned scraping device support frame 52 by an expansion / contraction rod 56 that rotates and expands / contracts as the above-mentioned scraping device vertical adjustment handle 53 rotates. Accordingly, the link angle of the parallel link mechanisms 51, 51 is adjusted by the rotation of the vertical scraping device vertical adjustment handle 53, and the vertical scraping device 1 with respect to the rice transplanter 2 is controlled by the vertical scraping device vertical adjustment handle 53. The position can be adjusted. Therefore, the operation of the vertical scraping device vertical adjustment handle 53 is used to adjust the depth of the ground scraping with respect to the planting depth of the seedling, or to perform the rice transplanting work without performing ground scraping so that the ground scraping device 1 does not touch the ground. Can do. In addition, the rotation shaft 53a of the vertical scraping device vertical adjustment handle 53 is provided forward with respect to the telescopic rod 56 that is expanded and contracted in the vertical direction by a bevel gear (not shown) in the handle guide 55. The operator who is riding the traveling unit 4 can operate the vertical adjustment handle 53.
[0014]
In this scraping device 1, the power of the scraping transmission shaft 24 is transmitted into the scraping transmission case 57, and the lateral scraping drive shafts 58, 58 provided on the left and right of the scraping transmission case 57 are driven to rotate. It is like that. The scratching transmission case 57 is fixed to the scratching device support frame 52. The scraping drive shafts 58 and 58 are pivotally supported by support arms 59 and 59 fixed to the left and right of the scraping device support frame 52, respectively. The above-described scraping drive shafts 58, 58 are provided with a scraping rotor 60 provided with a scraping blade 60a at every 90 degrees around the shaft. In this way, it acts on the field scene while rotating integrally with the left (rotating left in FIG. 3), so that in front of the seedling planting positions PL1. The cutting edges 60a ... have a corrugated shape in the left-right direction at the tip.
[0015]
The scraping rotors 60 are mounted so that the phases around the scraping drive shafts 58 of the scraping blades 60a adjacent in the left-right direction are different from each other. Further, muddy water flow restraining discs 61, 61 having diameters larger than the rotation radius of the cutting blade 60a ... are fixed to the left and right cutting rollers 60, 60 at the ends of the cutting rollers 60, 60 at the left and right ends, respectively. This mud flow restraint disc 61, 61 prevents the mud flow or water flow generated by driving the scraping rotors 60, 60 from affecting the side, and overthrows the existing seedlings on the side or has a poor posture. Or deterring it from being In addition, a scraping cover 62 is provided on the upper rear side of the scraping rotor 60... To prevent mud from scattering due to the driving of the scraping device 1 by the cover 62.
[0016]
Further, muddy water flow restraining plates 63 and 63 are fixed to the left and right side floats 45 and 45 of the rice transplanter 2. The muddy water flow restraining plates 63 and 63 are attached so that the muddy flow or water flow in front of the side floats 45 and 45 does not flow to the side of the machine body, and a few muddy water flow passage ports 64 and 64 are provided. The rear end of the muddy water flow restraint plates 63, 63 and the front end of the field sliding surfaces 45a, 45a, which are horizontal to the side floats 45, 45, are attached separately. As a result, the mud flow or water flow generated by the sliding of the field scenes of the floats 44, 44, 45, 45 is not affected laterally, and the mud water flow passage ports 64, 64 are connected to the side float 45, The muddy water in front of 45 is slightly released to the side, and a large amount of muddy water is accumulated in front of the side floats 45, 45, thereby supporting the rice transplanter 2 and thus the scraper 1 by the buoyancy of the floats 45, 45. It is possible to prevent the lifting and lowering of the lifting / lowering link mechanism 26 during rice transplanting from becoming unstable due to large fluctuations in force.
[0017]
By the way, a rolling shaft 65 in the front-rear direction is fixed to the base frame 28 of the rice transplanter 2 and the rolling shaft 65 is fixed to the planting transmission case 42a of the rice transplanter 2. The rice transplanter 2 is inserted into the ring bearing 66 and supported by the travel unit 4, and the rice transplanter 2 can be rolled around the rolling shaft 65 in the left-right direction. Yes. Between the left and right seedling placing table support frames 67 and 67 fixed to the left and right ends of the planting transmission case 42a and the rolling arm 68 provided on the base frame 28, Left and right balance springs 69, 69 set to appropriate loads are attached. The rolling arm 68 is rotated by driving a rolling motor 70 attached to the base frame 28. The planting transmission case 42a is provided with a left / right tilt angle sensor 71 for detecting the left / right tilt angle of the rice transplanter 2 so that the rice transplanter 2 is horizontal in the left / right direction by an input signal from the sensor 71. The rolling motor 70 is driven and controlled. Accordingly, the scraping device 1 supported by the rice transplanter 2 via the parallel link mechanisms 51 and 51 is configured to be able to roll in the left-right direction around the rolling shaft 65 together with the rice transplanter 2. It is controlled so as to be horizontal in the left-right direction regardless of the left-right inclination of the traveling unit 4 due to unevenness of the surface.
[0018]
Further, the balance springs 69 and 69 are located between the vertical link 26c of the elevating link mechanism 26 and the left and right frames 72 and 72 fixed to the left and right seedling support base support frames 67 and 67, respectively. Rolling buffer springs 73, 73 having large loads are provided, and the rice transplanter 2 for the traveling unit 4 in a state where the lifting link mechanism 26 is operated so as to be in the highest position by the rolling buffer springs 73, 73 and The rolling in the left-right direction of the scraping device 1 is buffered.
[0019]
The rear wheels 18, 18 of the traveling unit are arranged to protrude from the rear part of the traveling unit 4 in view of the front-rear balance of the machine body in which the rice transplanter 2 and the scraping device 1 are mounted on the rear side of the traveling unit 4. It has become. Interference prevention discs 74 fixed to the scraping rotor 60 are provided at the scraping rotor portion of the scraping device 1 behind the rear wheels 18. The interference prevention discs 74 are rotating bodies that rotate integrally with the shafts 58 and 58 around the drive shafts 58 and 58, and from the rotation radius of the tip of the drive blade 60 a of the drive rotor 60. Is also large. By providing the interference prevention disks 74, the rear wheels 18, 18 and the cutting blade 60a are not in contact with each other even when the cutting device 1 rolls in the left-right direction around the rolling shaft 65, The rear wheels 18, 18 are not greatly disturbed in the rotational driving of the scraping rotor 60 when the scraping blade 60 a contacts the lugs 18 a provided at appropriate positions on the outer peripheral portion of the rear wheels 18, 18. And the outer periphery of the interference prevention discs 74 are in contact with each other. Even if the rear wheels 18 and 18 and the outer peripheral portion of the interference prevention disc 74 contact each other, the outer peripheral portion of the interference prevention disc 74 is driven while sliding with respect to the rear wheels 18 and 18, so that the scraping device 1 and the rear wheel are driven. The 18 and 18 drive systems are prevented from causing mechanical lock.
[0020]
As described above, the interference preventing disk 74, which is an example of a ring-shaped body having a smooth curved surface behind the rear wheels 18 and 18 that are a part of the traveling unit 4, is supported and provided by the scraping device 1. Even if the scraping device 1 rolls in the left-right direction with respect to the traveling unit 4 so that the left-right inclined posture of the scraping device 1 becomes horizontal as the traveling unit 4 inclines in the left-right direction due to unevenness of the farm scene, etc. When the interference preventing disks 74 are in contact with the rear wheels 18, the rear wheels 18 and 18 are prevented from interfering with the scraping blade 60 a which is a kind of grounding action body. Therefore, it is possible to reliably prevent the cutting blade 60a ... and the rear wheels 18, 18 from interfering with each other, and the driving system of the cutting device 1 causes mechanical lock due to the interference between the cutting blade 60a ... and the rear wheels 18, 18. It is possible to suppress damage to the transmission mechanism in the scraping transmission case 57 of the device 1 and the transmission system to the scraping device 1. Similarly, it is possible to prevent the transmission system from being damaged due to mechanical locking of the drive system to the rear wheels 18 and 18 due to interference between the cutting blades 60a and the rear wheels 18 and 18.
[0021]
Although the above-described interference prevention disks 74 are rotated integrally with the cutting blade 60a, the present invention is not limited to this. The interference prevention discs 74 may be idled with respect to the drive shafts 58 and 58 instead.
In addition, although embodiment of this invention explained in full detail about the riding type rice transplanter with a scratching apparatus, this invention is not limited to this.
[Brief description of the drawings]
FIG. 1 is a side view of a riding type rice transplanter with an alternative scraping device. FIG. 2 is a plan view of a riding type rice transplanter with an alternative scratching device. FIG. 3 is a side view showing the alternative scraping device. Plane partial cross section [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Static scraping apparatus (ground work apparatus), 2 ... Rice transplanting apparatus, 3 ... Agricultural work machine (riding type rice transplanter) with ground work apparatus, 4 ... Running part, 5 ... Engine, 6 ... Engine output pulley, 7 ... Transmission belt , 14 ... front wheels (traveling wheels), 18 ... rear wheels (traveling wheels), 21 ... substitution scratching transmission belt, 26 ... lifting link mechanism, 30 ... pilot seat, 37 ... main clutch pedal, 38 ... substitution scratching clutch pedal, 45 ... side flow -G, 45a ... Field running surface, 51 ... Link mechanism, 53 ... Vertical adjustment handle, 53a ... Rotating shaft of vertical adjustment handle, 56 ... Telescopic rod, 63 ... Mud flow restraint plate, 64 ... Mud flow passage port

Claims (1)

Vertically movable planting device via a lifting linkage (26) behind the running wheels (14, 18) and a traveling portion comprising a cockpit (30) (4) (2) is mounted,該田planting device (2 Saidofuro comprising a horizontal field running surface on both sides of the lower (45a) of the) - bets provided (45), the ground working device in front of the planting device rearward in the travel section (4) (2) (1) The ground working device (1) is configured to be supported by the rice transplanter (2) via a link mechanism (51) attached to the rice transplanter (2), and the engine ( The power from 5) is transmitted from one of the two engine output pulleys (6) to the traveling wheels (14, 18) and the rice transplanter (2) via the transmission belt (7), and the two engine output pulleys. Ground work device (1) from the other of (6) through another transmission belt (21) In the configuration and the riding-type rice planting machine is transmitted, the Saidofuro - mud flow away the front end of the rear end with the field slope DOO mud flow suppression plate which is fixed to (45) (63) (45a ) passing through The link angle of the link mechanism (51) is provided via an expansion / contraction rod (56) that is provided with a mouth (64) and is vertically expanded and contracted by rotation of a vertical adjustment handle (53) provided above the ground work device (1). The rotating shaft (53a) of the vertical adjustment handle (53) is provided forward with respect to the telescopic rod (56) by a bevel gear so that the traveling wheels (14, 18) and the rice transplanter (2) are adjusted. A main clutch pedal (37) for operating to cut off power to the ground is provided in the traveling section (4), and another clutch pedal (38) for operating to cut power to the ground work device (1) is connected to the main clutch pedal ( 37) above Digit riding type rice planting machine.

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