JPH10295120A - Agricultural working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the weight balance of a machine body is deteriorated at the time of arranging a battery at the right/left side parts of the machine body or the rear part of the machine body and the front/rear length of the machine body is increased at the time of arranging the battery so as to project to the front tip part of the device body concerning the battery which is conventionally mounted to an agricultural working machine mounting an agricultural working device such as a seedling transplanting part, a tilling rotary on the rear side of a traveling vehicle body such as a riding type rice transplanter and an agricultural tractor. SOLUTION: The agricultural working device is arranged on the rear side of the traveling vehicle body with a right/left pair of front wheels and rear wheels driven by power transmitted from an engine through a transmission part 20, which is provided at the front part of the traveling vehicle body. Then the battery 107 is arranged so as to be overlapped with the part 20 by the machine body plane view at the front and right/left center part of the traveling vehicle body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a farming work, such as a riding type rice transplanter or agricultural tractor, in which a farming device such as a seedling planting part or a tilling rotary is mounted on the rear side of a traveling vehicle body. Belongs to the technical field of machines.

[0002]

2. Description of the Related Art Conventionally, riding rice transplanters and agricultural tractors have been used.
Seedling planting area and tillage rotary on the rear side of the running body such as
Some agricultural work machines equipped with agricultural work devices include a transmission unit that transmits power to a front wheel and a rear wheel at a front portion of a traveling vehicle body. In the above-mentioned agricultural work machine, since a heavy agricultural work device such as a seedling planting part or a tilling rotary is mounted on the rear side of the traveling vehicle body, the weight balance of the body tends to be rearward. Therefore, in order to improve the front-to-rear weight balance of the aircraft, a transmission unit, which is a heavy object such as a transmission case that transmits power to the front and rear wheels of the traveling vehicle body, is disposed at the front of the traveling vehicle body. There is a vehicle in which a battery is mounted on the front side of the vehicle to improve the front-rear weight balance of the body.

[0003]

In the above-mentioned agricultural work machine, the front-rear length of the body is increased by the amount of the battery disposed in front of the transmission section, and the unworked area such as the ridge of a field is widened. I will. SUMMARY OF THE INVENTION An object of the present invention is to provide an arrangement of batteries for improving the weight balance in the left-right direction of the body and the front-rear weight balance of the body without increasing the front-rear length of the body.

[0004]

According to the present invention, in order to solve the above-mentioned problem, power from an engine 10 is transmitted to a transmission unit 20.
An agricultural work device 3 is provided on the rear side of the traveling vehicle body 2 having a pair of left and right front wheels 5, 5 and rear wheels 6, 6 which are transmitted and driven through the vehicle. In the agricultural work machine 1 provided, a battery 107 is disposed so as to overlap with the transmission unit 20 in a plane view of a body at a front part and a left and right central part of the traveling vehicle body 2. .

[0005]

According to the agricultural work machine of the present invention, the transmission portion is provided at the front portion of the traveling vehicle body, so that the weight of the body having the agricultural operation device mounted on the rear side of the traveling vehicle body is improved, and the front-rear weight balance is improved. -Is arranged so as to overlap with the transmission section in the plane of the body at the front part and the center part on the left and right sides of the running body, so that the weight balance of the body with the agricultural working device attached to the rear side of the running body is good. In addition, arranging the battery does not increase the front-rear length of the body or deteriorate the weight balance of the body in the left-right direction.

[0006]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a riding type rice transplanter 1 as an example of a farm work machine. The rice transplanter 1 has a traveling vehicle body 2 and a seedling planting section 3 of 6-row planting, which is a kind of farm work equipment.
And a fertilizer application device 4 for six rows.

As shown in FIG. 1 and FIG.
Is equipped with a pair of left and right front wheels 5,5 and rear wheels 6,6,
The vehicle travels by driving these front and rear wheels 5, 5, 6, and 6. A driver's seat 7 is provided at the center in the left-right direction of the traveling vehicle body 2, and a steering handle 9 is provided above a front hood 8 on the front side of the driver's seat 7. An engine 10, which is a driving source, is provided substantially at the center of the traveling vehicle body 2, and an output pulley 11 of the engine 10 supplies a first transmission belt 12 and an HS.
An HST input shaft 13a is driven via an input pulley 14 of a T (hydraulic continuously variable transmission) 13, and power is transmitted to the HST 13. The first transmission belt 12 is provided with a tension pulley 15 for applying tension to the belt 12. A hydraulic pump 16 is attached and fixed to the right side of the HST 13 by bolts,
The hydraulic pump 16 is driven by driving the HST input shaft 13a protruding to the opposite side.
An HST output pulley 17 is attached to an HST output shaft 13b which is driven by being shifted at an arbitrary speed ratio from the HST input shaft 13a, from which a second transmission belt 18 and a main transmission case input port are provided. The power is transmitted to the main mission case 20 through the ridge 19. still,
The second power transmission belt 18 is provided with tension pulleys 21 and 21 for applying tension to the belt 18. Power is transmitted to left and right front wheel axle portions 20a, 20a protruding left and right of the main transmission case 20, and the front wheels 5, 5 are driven. Also, the power from the main transmission case 20 is transmitted to the left and right rear wheel transmission cases 23, 23 via the right and left rear wheel transmission shafts 22, 22, so that the rear wheels 6, 6 are driven. Has become.

Power from the main transmission case 20 is transmitted to a work clutch case 25 via a work device transmission shaft 24 provided so as to pass rightward of the engine 10, and the work clutch case is transmitted to the work clutch case 25. The power from inside the fertilizer transmission shaft 2 is transmitted to the seedling planting section 3 via the planting transmission shaft 26 and extends upward from the work clutch case 25.
7 to the fertilizer application device 4.

The seedling planting section 3 is mounted via an elevating link mechanism 28 provided at a rear portion of the traveling vehicle body 2, and moves up and down by expansion and contraction of a hydraulic elevating cylinder 29 operated by hydraulic pressure from the hydraulic pump 16. It is provided to be. The switching of the oil path from the hydraulic pump 16 to the hydraulic elevating cylinder 29 is performed by a hydraulic switching valve 30 provided at the rear of the traveling vehicle body 2.

A main frame 31 is provided substantially at the center of the traveling vehicle body 2, and the main frame 31 has the engine 10 mounted on the upper side and the main transmission case 20 fixed on the front side. It has become. At the rear of the main frame 31, the elevating link mechanism 28 is attached, and the rolling frames 32 of the rear wheels 6, 6 to which the right and left rear wheel transmission cases 23, 23 are fixed are pivotally mounted. The rear wheels 6, 6 are swingably provided with respect to the traveling vehicle body 2.

As shown in FIG. 3, the hydraulic circuit of the hydraulic pump 16 includes a hydraulic oil supply circuit to the hydraulic lift cylinder 29 and a charge circuit of the HST 13. That is, the hydraulic tank 16 is driven by the hydraulic pump 16.
Oil is supplied to the pump 16 through an oil passage 34 from the hydraulic pump 3, and an oil passage 35 for supplying pressure oil from the hydraulic pump 16, which is a dual pump, to a hydraulic lifting cylinder 29, and a charge circuit for the HST 13. Oil path 36 is provided. Oil pressure is supplied to the oil pressure switching valve 30 by the former oil passage 35,
The hydraulic pressure is supplied from the valve 30 to the hydraulic lifting cylinder 29 via the descending lock valve 37. An oil passage 38 for returning oil from the hydraulic pressure switching valve 30 to the hydraulic tank 33 is provided. In addition, the filter 39 is connected to the latter oil passage 36.
An oil path is provided to the HST 13 via the HST 13 and oil returned from the HST 13 to the hydraulic tank 33 is provided.

The seedling planting section 3 is provided with a seedling mounting table 50, a planting transmission section 51, and a seedling planting apparatus 52 for each row.
The power from the work clutch case 25 is input into the planting transmission case 51a of the planting transmission part 51 via the planting transmission shaft 26 to operate. In addition, a center float 53 and side floats 54, 54 are provided on both sides at the lower part of the seedling planting section 3.
54, 54 slide on the field scene. still,
The floats 53, 54, 54 are provided rotatably around pivot shafts 55 in the left-right direction. Further, the field scene is detected by detecting the vertical inclination angle of the center float 53, that is, the angle of attack with respect to the field scene, so that the seedling planting section 3 is controlled to a predetermined height with respect to the field scene. A field scene sensing mechanism 56 for sensing is configured, and the hydraulic pressure switching valve 30 is operated via a wire 57 as the field scene sensing mechanism 56 operates.

The seedling mounting table 50 is attached to a left and right moving shaft 58 protruding from both sides of the planting transmission case 51a by means of seedling mounting tables 59, 59. The right and left moving shaft 58 which moves left and right in accordance with the operation of the seedling placement devices 52,...
The seedling mounting devices 52,... Scrape mat seedlings on the seedling mounting table from the seedling openings 60. In addition, the seedling mounting table 50
Is a known configuration in which mat seedlings on the seedling mounting table are transferred to the seedling planting apparatus side by side by one seedling by the seedling feeding belts 61...

On the right side of the steering handle 9 of the traveling vehicle body 2, there is provided an HST lever 70 which can change the speed ratio of the HST 13. On the left side of the steering handle 9, there is provided a main transmission lever 71 which can switch the engagement of gears in the main transmission case 20 to switch the vehicle speed between "road running speed" and "planting operation speed". Is provided. A planting / elevating lever 72 is provided on the right side of the cockpit 7. By operating the planting / elevating lever 72, a seedling planting section is provided by a work clutch (not shown) in the work clutch case 25. The raising and lowering of the seedling planting section 3 is performed by turning on / off the drive of the fertilizer application device 3 and the fertilizer application device 4 and operating the hydraulic switching valve 30. Below the steering handle 9, a rear wheel differential lock lever 73 for switching between a differential state and a differential lock state of the rear wheels 6, 6 and a tension pulley 15 of the first power transmission belt 12 are operated, thereby operating the engine 10. O to cut off transmission to HST13
A stop lever 74 is provided.

A main clutch pedal 75 which cuts off transmission of power to the front and rear wheels 5, 5, 6, 6 of the traveling vehicle body 2, the seedling planting section 3 and the fertilizer application device 4 below the left side of the front bonnet 8. A brake pedal 76 for braking the left and right rear wheels 6, 6 at positions substantially symmetrical to the clutch pedal 75,
76 are provided. When the main clutch pedal 75 is depressed, the tension pulleys 21 and 21 of the second power transmission belt 18 are operated and the HST 1
From 3, transmission to the main mission case 20 is cut off. The left and right brake pedals 7
By the depressing operations of the brake pedals 6, 76, the left and right rear wheels 6, 6 are braked by operating the left and right brake devices (not shown) in the main transmission case.

The HST lever 70 can be set to an arbitrary speed from the forward to the reverse of the traveling vehicle body 2 by performing a stepless speed change operation in the front-rear direction around the left-right rotation shaft 81. The left-right rotating shaft 81 is configured to be fitted into a lever-shaft support cylinder 82 provided on the traveling vehicle body side. An HST operation arm 83 that rotates integrally with the rotation shaft 81 is provided at a left end of the rotation shaft 81 in the left-right direction.
The tip of the arm 83 is connected to a trunnion arm 13c for shifting the HST 13 by an HST operating rod (not shown).

The HST lever 70 and the left-right rotation shaft 81 are pivotally connected by a front-rear rotation shaft 84. A guide plate 85 provided with a guide groove 85a below the HST lever 70 is provided integrally with the traveling vehicle body side, and a guided plate 86 provided so as to be guided by the guide groove 85a. Are fixed to the HST lever 70. The guide groove 85a is provided in the HST lever 70.
The lever has a crank shape that allows the lever to be operated in the left and right direction at the neutral position.
70 is prevented from being directly operated from the forward side to the reverse side or from the reverse side to the forward side. A torque spring 84a is provided on the part of the rotation shaft 84 in the front-rear direction, and the HST lever 70 is urged leftward (forward operation side) by the torque spring 84a. Therefore, when operating the HST lever 70 in the reverse direction, the HST lever 70 is operated rightward at the neutral position and then operated backward.

The guide plate 8 of the HST lever 70
5 is a back-lift interlocking plate 88 rotatable around a rotation shaft 87 attached to the plate 85.
Is provided. Back lift interlocking plate 8
8 shows the HST lever 70 in the reverse operation position in the HST lever 70.
An upright portion 88a is provided for the guided plate 86 of the lever 70 to come into contact with, so that the HST lever 70 can be rotated by the backward operation. The plate 88 for interlocking with the back lift is attached to the plate 88 by HST.
A torque spring 88b is provided to bias the lever 70 toward the forward operation position. Back lift interlocking pre-
A wire 89 for interlocking with the back-lift is attached to the tip of the head 88, and the hydraulic switching valve 30 is operated by the wire 89 to move the HST lever 70 to the reverse operation position so that the seedling placement part 3 is raised. In this way, the seedling planting section 3 is prevented from being damaged by moving the body backward while the seedling planting section 3 is in contact with the ground.

The lever shaft support cylinder 82 of the HST lever 70
Are welded and fixed so as to connect the left and right sides of a U-shaped support plate 90 in a front view. The support plate 90 is attached and fixed to the main transmission case 20 by attaching bolts 91, 91 at the lower part. A main transmission lever 71 is attached to the upper part of the support plate 90 so as to be rotatable in the front-rear direction. The main gear lever
Reference numeral 71 denotes a lever which rotates integrally by operating the lever 71.
The arm 92 of the shaft 71a and the main transmission shifter 93 provided on the main transmission case 20 are connected by a main transmission operation rod 94 so that a transmission operation can be performed. On the upper part of the support plate 90, two connecting shafts 95 and 96 are fixedly provided so as to connect the left and right of the support plate 90. The front connection shaft 95 of the connection shafts 95 and 96 is provided with a rear wheel differential lock lever 73 and an all-stop lever 74 that use the connection shaft 95 as a rotation shaft. An inverted U-shaped plate 99 in front view, which is provided integrally with an upper support cylinder 98 that supports the upper portion of the steering shaft 97, is fixed to the rear connection shaft 96.
A central plate 100 is fixed to the vertical rear of the support plate 90 so as to connect the left and right sides of the support plate 90. The central plate 100 and a plate 102 integral with a central support cylinder 101 supporting the upper and lower central portions of the steering shaft 97 are fixed by bolts 103, 103 and nuts 104, 104. The center support tube 101 is fixedly mounted on the upper surface of the main transmission case 20 by bolts 105.

At the lower part on the left side of the support plate 90,
The battery mounting table 106 is fixedly provided. The lever shaft support cylinder 82 of the HST lever 70 is fixed to the lower surface of the battery mounting table 106 by welding. A left rising portion 106a and a rear rising portion 106b are provided on the left and rear portions of the battery mounting table 106, and the battery 107 mounted by the rising portions 106a and 106b is displaced due to vibration of the body. Is prevented from doing so. The battery-1
07 is a rear rising portion 106b of the battery mounting table 106.
A fixing plate 110 in which an elastic band-like rubber body 109 is mounted on the upper side of the battery 107 between the upper end of the battery and a front locking plate 108 provided at the front of the battery mounting table 106. It can be attached by hanging from the upper side of. The front locking plate 108 is
It is provided so as to be rotatable around a horizontal rotation shaft 108a.

The front bonnet 8 of the traveling vehicle body 2 is designed so that a cover 8a on the front side of the bonnet 8 can be removed. Therefore, with the cover 8 removed, the battery 107 is moved from the front of the fuselage to the battery
It is designed to be mounted on and mounted on. At this time, since the battery 107 is mounted so as to be disposed on the front side of the steering shaft 97 for driving the pair of left and right front wheels 5, 5, the mounting of the battery 107 can be easily performed from the front side of the body.

As described above, in the riding type rice transplanter 1, since the main transmission case 20 is provided at the front of the traveling vehicle body 2, the seedling mounting portion 3 is mounted on the rear side of the traveling vehicle body 2. The balance between the front and rear weights of the aircraft has been improved, and the battery
107 is arranged so as to overlap with the main transmission case 20 in the plane of the body at the front part and the right and left center part of the traveling body 2, so that the seedling planting part 3 is attached to the rear side of the traveling body 2. While improving the weight balance before and after the aircraft
By arranging the battery 107, the longitudinal length of the body is not lengthened and the weight balance of the body in the left-right direction is not deteriorated.

In front of the main transmission case 20, there are provided left and right frames 111 having a rectangular cross section and extending in the left and right direction. The left and right frames 111 are welded and fixed to left and right plates 113, 113 which are attached and fixed to the front of the main transmission case 20 by bolts 112. The left and right frames 111 have a configuration in which a space 111a is provided inside, and the left and right frames 111a
Are open outward at both left and right end portions of the left and right frames 111. A rod-shaped balance weight 114 is inserted into the left and right frames from the ends of the left and right frames 111, which are the front of the body, in order to improve the front-rear weight balance of the body on which the seedling planting part 3 is mounted at the rear. It is designed to fit. At the end of the rod-shaped balance weight 114, a flange 11 is provided.
4a, flanges 111b with weld nuts welded to the left and right ends of the left and right frames 111,
The bar-shaped balance weight 114 is fixed to the left and right frames 111 by bolts. By using the rod-shaped balance weights 114 inserted into the left and right frames, the balance weights can be effectively inserted in the left and right frames without extending the front and rear lengths of the fuselage by projecting the balance weights to the front of the body and mounting them. Can be used.

A bumper mounting plate 115 fixed to the left and right frames 111 and welded to a weld nut.
The bumper 11 is divided into three parts by bolts in the left-right direction.
6, 117, 117 are attached. The bumpers 116, 117 and 117 are made of two kinds of materials, casting and resin, having different weights. The two kinds of bumpers are replaced according to the presence or absence of the fertilizer 4 and the difference in the weight of the seedling planting part 3. In addition, the weight balance between the front and rear of the aircraft can be adjusted to improve the balance. That is, the bumpers 116 and 11
7, 117 are divided into three parts in the left-right direction, so that each of the bumpers can be replaced with the above-mentioned two kinds, respectively, so that the front-to-back weight balance can be adjusted very finely.

In front of the main transmission case 20, a hydraulic tank 33 is provided. This hydraulic tank 33
Bolts 119, 118 are attached to the left and right hydraulic tank mounting plates 118, 118 welded to the left and right frames 111, respectively.
119. The hydraulic tank 33 has a shape close to a rectangular parallelepiped that is long in the left-right direction, and has a shape such that the length of the body in the front-rear direction is shortened so that the length of the body is not long. The hydraulic tank 33 is provided substantially at the center in the left-right direction of the body,
The layout is such that the weight balance in the left and right direction of the aircraft is not deteriorated.

[Brief description of the drawings]

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

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

FIG. 3 is a diagram showing a hydraulic circuit;

FIG. 4 is a side view showing a front portion of the traveling vehicle body.

FIG. 5 is a front view showing a configuration around a front hood of the traveling vehicle body.

FIG. 6 is a side view showing a linked configuration in which the seedling plant is raised by operating the HST lever.

FIG. 7 is a view from A in FIG. 6 showing a linked configuration of raising of a seedling planting portion by operation of an HST lever.

[Explanation of symbols]

1. Riding rice transplanter (agricultural work machine) 2. Running vehicle body 3.
Seedling plant (agricultural work equipment), 5, 5 front wheels, 6, 6 rear wheels, 10 engine, 20 main transmission case (transmission unit), 107 battery

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroyuki Niiyama 1 Togashi-cho, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Within the department (72) Inventor Takashi Suzuki 1, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. Tatsuyuki Torizu 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] An agricultural work device 3 is provided on the rear side of a traveling body 2 having a pair of left and right front wheels 5, 5 and rear wheels 6, 6 which are driven by power transmitted from an engine 10 transmitted through a transmission unit 20. In the agricultural work machine 1 in which the transmission unit 20 is provided in front of the traveling vehicle body 2, the battery 107 is disposed so as to overlap with the transmission unit 20 in a plane view of the front portion of the traveling vehicle body 2 and the right and left central portions in the plane of the body. Agricultural working machine, characterized in that is arranged.