JPH10127109A - Farm work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve the problems that the driving system of a grading device interferes with other interfering objects when a machine body travels on a road and an operator who maintains the machine body near the grading device is harmed by the drive of the grading device when the grading device is driven in a non-grounded state for not performing grading in a farm work machine such as a tractor composed by mounting the grading device to the rear part of a traveling car body or a rice transplanter provided with the grading device in front of a seedling planting part, etc. SOLUTION: In this farm work machine composed by providing the grading device 4 vertically movably to the traveling car body 2, the grading device 4 grades a field surface by being driven in the state of being grounded on the field surface and the grading device 4 is not driven when the grading device 4 is elevated to the traveling car body 2 so as not to be grounded on the field surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work machine provided with a leveling device for leveling a field scene by driving the field scene while touching the field scene.

[0002]

2. Description of the Related Art Conventionally, in a farming machine such as a tractor having a leveling device mounted on a rear portion of a traveling vehicle body or a rice transplanter having a leveling device in front of a seedling planting section, the leveling device is in contact with a field scene. There is one in which a field scene is leveled by driving, and the leveling device can be moved up and down with respect to a traveling vehicle body so that the leveling device is in a state of being in contact with the field scene and in a state of not being touched.

[0003]

However, the above-mentioned agricultural work machine is capable of driving the leveling device in a non-ground state in which the leveling device does not perform the leveling, and the leveling device is separated from the field scene and suspended in the air. Driving in the presence state may cause the drive system of the ground leveling device to interfere with other interfering objects when the vehicle travels on the road, or may cause harm to the worker who performs maintenance of the aircraft near the leveling device due to the driving of the leveling device. There is.

[0004]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and the structure of the present invention is as follows. That is, in a farming machine in which the ground leveling device 4 is provided so as to be able to ascend and descend with respect to the traveling vehicle body 2, the ground leveling device 4 is configured to be driven in a state of being grounded on the field scene to level the field scene. The agricultural work machine is characterized in that when the leveling device 4 is raised with respect to the traveling vehicle body 2 so that the leveling device 4 does not touch the field scene, the leveling device 4 is not driven.

[0005]

The agricultural work machine according to the present invention levels the field by driving the traveling vehicle while driving the ground leveling device in contact with the field scene. Further, when the leveling device is raised with respect to the traveling vehicle so that the leveling device does not touch the field scene, the leveling device is not driven.

[0006]

As described above, the agricultural working machine of the present invention is not driven when the ground leveling device is in the air away from the field scene. Can be prevented from interfering with and causing harm to the operator who performs maintenance of the machine body near the leveling device due to the driving of the leveling device.

[0007]

FIG. 1 shows a riding type rice transplanter 1 which is a kind of agricultural working machine of the present invention. The riding type rice transplanter 1 is mainly composed of a traveling vehicle body 2, a six-row seedling planting part 3, and a shaving device 4 which is a kind of a leveling device provided in front of the seedling planting part 3. . This riding rice transplanter 1
The seedling mounting part 3 is mounted so as to be able to move up and down by a hydraulic lifting cylinder 5 via an elevating link mechanism 6 provided at the rear of the traveling vehicle body 2, and a parallel link mechanism 7 is provided on the front side of the seedling mounting part 3. 7 is provided with the substitute device 4 attached thereto. The elevating link mechanism 6 includes one upper link 6a and two left and right lower links 6b, 6b. The upper body link 6a and the lower links 6b, 6b include the traveling vehicle body 2 and a seedling attaching section. 3 is pivotally attached to the base frame 8. The rod portion of the hydraulic lifting / lowering cylinder 5 is attached to an arm 6d that rotates integrally with the upper link 6a and a rotating shaft 6c on the traveling body side.

An engine 9 serving as a drive source is provided substantially at the center of the traveling vehicle body 2, and a double output port on the left side of the engine 9 is provided.
The auxiliary transmission 1 from one of the gears 10 via the transmission belt 11
The transmission is transmitted to a transmission case 13 provided with a main clutch capable of cutting off the transmission from the auxiliary transmission 12, and a pair of left and right front wheels 14, 14 is transmitted by the transmission from the transmission case 13. Is driven, and the transmission from the transmission case 13 causes the left and right rear wheel transmission shafts 15,
A pair of left and right rear wheels 17, 17 are driven via the rear wheel 15 and the left and right rear wheel transmission cases 16, 16. The auxiliary transmission 12 is a belt-type continuously variable transmission. Further, the seedling planting section 3 is driven via a planting transmission shaft 18 driven by power from the transmission case 13. The planting transmission shaft 18 is provided so as to pass through the right side of the engine 9. -19 is provided.

Power is transmitted from the other one of the two output pulleys 10 of the engine 9 to the scraping drive counter case 21 via the transmission belt 20, and the power from the scraping drive counter case 21 is used. The configuration is such that the scraping device 4 is driven via the scraping transmission shaft 22.
The transmission belt 20 is provided with a tension pulley 23, and the operation of the pulling device 4 can be turned on and off by the operation and non-operation of the tension pulley 23. The tension pulley 23 is attached to a tension pulley 23b which rotates around a rotation shaft 23a, and is connected to the transmission belt side by a tension pulley spring 23c hung on the arm 23b. It is configured to be biased.

A cockpit 24 is provided at substantially the center of the traveling vehicle body 2 in the front, rear, left and right directions. A steering handle 26 is provided on a hood 25 in front of the cockpit 24.
2 is provided with a sub-shift lever 27 which can perform a shift operation, and a main shift lever 28 which can perform a shift operation including switching between forward and backward by switching transmission in the transmission case 13 is provided on the left side. On the right side of the cockpit 24, the raising and lowering of the seedling planting section 3 by operating the hydraulic lifting cylinder 5 and the seedling planting section 3 by operating the inside of the planting clutch case 19 are performed.
A planting / elevating lever 29 capable of turning on and off the drive is provided.

On the left side of the bonnet portion 25, a main clutch pedal 30 for operating the main clutch in the transmission case 13 and the tension pulley 23 for turning on and off the drive of the displacement device 4. Is provided. When the clutch clutch pedal 31 is depressed, the clutch clutch pedal connecting wire 31a is pulled, and the tension puller
The rotation of the tension pulley 23 in the direction (downward) in which the tension pulley 23 is retracted from the transmission belt 20 causes the tension pulley 23 to retract, whereby the transmission by the transmission belt 20 is cut off. In addition, this replacement scratch pedal 31
Can be fixed while being depressed.

Right and left brake pedals 32, 32 for braking the left and right rear wheels 17, 17 are provided on the right side of the bonnet portion 25. The seedling planting section 3 is mainly composed of a seedling mounting table 41, a planting transmission section 42, and a seedling planting device 43 for each row. The planting section 3 is input to the planting transmission section 42 via the planting transmission shaft 18. It is supposed to work. Each of the seedling planting devices 43,... Is operated by the power from the planting transmission unit 42, and the seedlings of the seedling mounting table 41 are planted one by one in the field. In addition, the base frame 8 of the seedling planting part 3 attached to the rear end of the lifting link mechanism 6.
The right and left rolling shafts 44 fixed to the
Of the seedling transmission case 42a, so that the seedling planting portion 3 can be rolled in the left-right direction with respect to the traveling vehicle body 2. The right and left support frames 45, 45 attached to the planting transmission case 42a of the planting transmission section 42 and the base frame 8 have a right and left balance set to an appropriate load. The springs 46, 46 are provided, and the seedling planting section 3 is provided.
Is able to follow the field scene by rolling left and right with respect to the running vehicle body 2. The lower links 6b, 6b of the right and left lifting link mechanism 6 and the left and right support frames 4
Left and right frames 47, 4 respectively fixed to 5, 45
Rolling lock springs 48, 48 having a larger load than the balance springs 46, 46 are provided between them and the rolling springs 48, 48.
Thus, the right and left rolling of the seedling planting portion 3 with respect to the traveling vehicle body 2 is regulated in a state where the lifting link mechanism 6 is operated so that the seedling planting portion 3 is at the highest position.

[0013] In the lower part of the seedling planting part 3, 2 in the center part.
The center floats 49, 49 and side floats 50, 50 are provided on both sides, and these floats 4 are provided.
9, 49, 50, and 50 are configurations that slide on a field scene.
These floats 49, 49, 50, 50 are
G, 49, 49, 50, 50 are provided at the rear part so as to be rotatable in the vertical direction around left and right pivot shafts 51. The two center floats 49, 49 are connected at the front portions of the floats 49, 49 by a connection frame 52, and are configured to have the same angle of attack on the field scene. In the planting state with the seedling planting section 3 lowered, the hydraulic lifting cylinder 5 is operated based on the angle of attack of the center floats 49, 49 with respect to the field scene, and the seedling planting section 3 is moved to the field scene. On the other hand, it is maintained at a predetermined height.

The left and right pivots 51 of the floats 49, 49, 50, 50 are provided near the seedling planting device 43, and these pivots 51 are substantially in a side view. It is provided at the same position. The pivot shafts 51 are provided with a planting depth adjusting lever 51a provided in front of the seedling mounting table 41.
It is provided so that it can be adjusted up and down by the operation. The seedling planting devices 43 are attached to the rear of the planting transmission unit 42 and are operated by power from the planting transmission unit 42. The seedling mounting table 41 is supported by a seedling mounting table support rollers 53 and 53 at an upper portion and a left and right moving guide plate 54 so as to be movable left and right.
The right and left movement of the seedling mounting table left and right moving bar 55 is performed by the power from the left side. The seedling table support rollers 53 are connected to the planting transmission case 42a of the planting transmission unit 42.
It is configured to be attached to the upper part of the support frames 45, 45 fixed to the. By moving the seedling mounting table 41 left and right, the mat-shaped seedlings are scraped by the seedling planting device 43 one by one. The left and right moving guide plate 5
4 is provided with a seedling scraping port 54a, which is a seedling removal section from which the seedling planting device 43 extracts a seedling. In addition, the seedling mounting table 41 is used to move mat-shaped seedlings at the end of the left and right movement by the seedling feeding belts 56.
Is a known configuration for sequentially transferring the seedlings to the seedling planting device side.

A spare seedling mounting table 57 is provided at the rear of the traveling vehicle body 2. The operator supplies the seedlings placed on the spare seedling mounting table 57 to the seedling mounting table 41. The spare seedling mounting table 57 includes a central portion 57a and left and right end portions 57b, 57b, and is provided so as to protrude left and right of the body. Accordingly, in this riding type rice transplanter 1, an auxiliary worker who enters the ridge with the side of the body approaching the ridge while turning around on the ridge in a field or the like, places the seedling on the spare seedling mounting table 57 from the ridge. Can be supplied.
The spare seedling mounting table 57 is provided with left and right seedling box sliding rails 58 provided on the front and rear, respectively. The plurality of mat-shaped seedlings can be placed by pushing the seedlings in the form of seedlings into the spare seedling mounting table 57 together with the seedling box A. The seedling box sliding rails 58, which are left and right ends of the spare seedling mounting table 57, have left and right seedling box stoppers 59, respectively.
The seedling box stoppers 59 prevent the seedling box A from being pushed out from the other end of the spare seedling mounting table 57 when the seedling box A is supplied from the left and right ends of the spare seedling mounting table 57.

The spare seedling mounting table 57 is composed of a central portion 57a and left and right end portions 57b, 57b of the spare seedling mounting table 57.
Rotating mechanisms 60, 60, 6 provided before and after the connecting portion
0, 60 when the body is stored, etc.
b and 57b can be stored by rotating upward. The rotating mechanisms 60 are fixed to positions outside the seedling box sliding rails 58 so as not to protrude above the upper surface.
, And a rotating shaft 61a on the central portion 57a side and a rotating shaft 6 on the left and right end portions 57b, 57b.
A connecting plate 63 for connecting the rotating shafts 2a to both rotating shafts 61a, 62a, and a regulating plate for regulating a rotating range of the left and right end portions 57b, 57b around the rotating shafts 61a, 62a. .. 64, 65.
The connecting plates 63 are provided at positions where they do not protrude above the upper surface of the seedling box sliding rails 58 with the spare seedling mounting table 57 expanded. Therefore, the left and right end portions 57b, 57b of the spare seedling mounting table 57 are
Are rotated so as to be located above the central portion 57a of the spare seedling mounting table 57. In a state where the spare seedling mounting table 57 is expanded, the rotating shafts 61a on the central side are provided.
And the rotating shafts 62a of the left and right ends 57b, 57b below a straight line connected by the rotating shafts 62a.
The mounting pins 66 are fixedly provided on the regulating plates 65 of the left and right end portions 57b, 57b so as to be located outside of the rotating shaft 6 on the center side.
1a are hung between the left and right ends 57b, 57b when the spare seedling mounting table 57 is expanded and stored by the springs 67. Like that. Since the rotating mechanisms 60 do not protrude above the seedling box sliding rails 58, the operator replenishes seedlings from the spare seedling mounting table 57 to the seedling mounting table 41 of the seedling planting section 3. Sometimes out of the way.

The planting device 4 is provided in front of the seedling planting section 3 and has a planting transmission cable of the planting transmission section 42 of the planting planting portion 3.
The structure is supported by the seedling planting section 3 by the parallel link mechanisms 7, 7 attached to the seeds 42a. The link angle of the parallel link mechanisms 7, 7 is adjusted by turning a plowing device up / down adjustment handle 71, and the height of the plowing device 4 with respect to the seedling planting section 3 by the plowing device up / down adjustment handle 71. Can be adjusted. In the displacement device 4, a displacement drive shaft 73 is driven by a displacement from a displacement transmission shaft 22 via a displacement transmission case 72. The shaving device drive shaft 73 is provided with a shaving blade 74 at a predetermined angle around the shaft. The shaving blades 74 rotate integrally with the shaving device drive shaft 73 and act on a field scene to plant seedlings. It is configured such that the padding in front of the seedling placement positions PL1 to PL6 of the part 3 is performed. A shaving cover 75 is provided above the shaving blades 74. The cover 75 prevents the muddy soil from scattering when the shaving device 4 is driven.

Further, the riding type rice transplanter 1 is operated by operating the above-mentioned lowering device vertical adjustment handle 71.
Is raised and brought into a non-grounding state, so that rice transplanting can be performed without simultaneous plowing. At this time, by fixing the substitute clutch pedal 31 in a depressed state, the substitute device 4 can be prevented from being driven unnecessarily.

An elevating link connecting wire 81 is attached to the lower link 6b on the left side of the elevating link mechanism 6 for raising and lowering the seedling planting section 3. The other end of the elevating link connecting wire 81 is attached to the tension pulley 23b. When the elevating link mechanism 6 is actuated on the ascending side of the seedling planting section 3, the elevating link connecting wire 81 is pulled, and the tension pulley 23 retracts from the transmission belt 20 through the tension pulley 23b ( (Downward) and the tension pulley 23 retracts,
The transmission to the substitute device 4 by the transmission belt 20 is cut off. The elevating link mechanism side of the elevating link connecting wire 81 is attached substantially perpendicular to the link angle of the lower link 6b on the left side, and when the seedling planting part 3 and the substitute device 4 change from the grounded state to the non-grounded state (the elevating link) Mechanism 6
(When the ascending operation is started), the transmission of the substitute device 3 is cut off.

Accordingly, when the raising and lowering link mechanism 6 operates the seedling transplanting unit 3 and the substitute planting device 4 so as to be in a non-ground state, the driving of the substitute planting unit 4 is stopped. When the aircraft is traveling on the road with the device 4 raised, the seedling placement unit 3 and the substitute device 4
The right and left sides of the traveling body 2 are rolled in the driving state so that the
7 and 17, and a substitute device for a worker who performs maintenance of the planting transmission unit and the like of the seedling planting unit 3 in the vicinity of the substitute unit 4 in a state where the planting unit 3 and the substitute unit 4 are raised. 4 can prevent harm caused by the driving of the shaving blades 74 of this embodiment. In this embodiment, the simultaneous shaking and rice transplanting machine equipped with the shaving device 4 as a kind of the leveling device has been described in detail. A non-tilling rice transplanter may be provided with a partial tillage device that plows the front of the position in a streak shape. Also,
A non-tilling sowing machine provided with a direct sowing machine provided with a direct sowing device in place of the seedling planting section 3 of this embodiment or a partial tillage sowing device provided with a partial tillage device that streaks the front of the sowing position in a streak shape may be used. .

[Brief description of the drawings]

FIG. 1 is a side view of a riding type rice transplanter.

FIG. 2 is a plan view of a riding type rice transplanter.

FIG. 3 is a schematic plan view of a main part showing a substitute plant and a seedling planting section.

FIG. 4 is a side view showing a configuration of turning on and off the driving of the substitute device.

FIG. 5 is a rear view showing a portion of the preliminary seedling mounting table.

FIG. 6 is a side view of a spare seedling mounting table.

[Explanation of symbols]

1. Riding rice transplanter (agricultural work machine) 2. Car body, 4.
Plowing equipment (leveling equipment)

Claims (1)

[Claims] 1. An agricultural work machine in which a leveling device 4 is provided to be able to move up and down with respect to a traveling vehicle body 2.
Is configured to level the field scene by driving while touching the field scene, and when the leveling device 4 is raised with respect to the traveling vehicle body 2 so that the leveling device 4 is not touched to the field scene. An agricultural work machine wherein the leveling device 4 is not driven.