JPH03201905A - Riding farm-working machine - Google Patents

Abstract

PURPOSE:To facilitate the assembling, mending and inspection of the subject machine by attaching a steering assembly, a transmission assembly and a lifting assembly to the frame of a mobile machine body in an independently detachable manner. CONSTITUTION:A steering assembly 10 containing parts for steering assembled and integrated to the assembly, a transmission assembly 11 containing parts for a speed changer and a differential gear assembled and integrated to the assembly and a lifting assembly 13 having a hydraulic device for lifting the working machine part and its relating parts in assembled and integrated state are separately assembled and integrated to a frame 6. Only the required assembly can be removed from an entire machine body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a riding agricultural machine that is used by mounting a working machine part for rice transplantation or the like on a running vehicle body.

[Prior Art] The running body of a riding agricultural machine includes an engine as a driving source, a transmission that changes the speed of the engine's power as appropriate, a front and rear wheel differential device that adjusts the balance of rotational force between the left and right wheels, and a steering wheel. The steering device 1 is equipped with a hydraulic device for raising and lowering the work a1 portion. Conventional riding agricultural machines are
When assembling a traveling vehicle body, the components of each of these devices were individually assembled to the frame in sequence.

[Problem to be Solved by the Invention 1] As a result, the assembly line has become long and complicated, making it difficult to make adjustments between each process, and making assembly work difficult depending on the process. In addition, since it is not possible to remove only specific parts from the completed car body as necessary, repairs and
It was troublesome during inspection.

Therefore, the present invention proposes a riding agricultural machine whose traveling vehicle body is easy to assemble, repair, and inspect.

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, the riding agricultural machine according to the present invention includes a steering assembly, a transmission, and a differential, in which steering-related parts are assembled into the frames of the traveling vehicle bodies arranged at the front and rear. A
There is a mission assembly that integrates equipment parts, an engine assembly that integrates the engine and its related parts, and work Il? The A-minute lifting/lowering hydraulic system and its associated parts are assembled into an integrated lifting assembly, which can be installed and removed independently.

[Function] Since it is sufficient to assemble each assembly separately and assemble them to the frame, the assembly work is easy and simplified. Furthermore, since only necessary assemblies can be removed from the completed vehicle body, repairs and inspections are easy.

[Embodiment] Figures 1 to 9 show a riding agricultural machine which is an example of the present invention, and this agricultural machine 1 has a rice transplanting working machine part attached to a link device 3 provided at the rear of a traveling vehicle body 2. 4 is attached, and a fertilizing device 5 is provided in the space between the traveling vehicle body 2 and the working machine portion 4, and is used as a single-ride fertilizing rice transplanter.

As shown in FIGS. 2 and 3, the frame 6 of the traveling vehicle body 2 includes parallel vertical vibros a and 6a arranged at the front and rear, and horizontal vibros b and 6c fixed to the lower surfaces of these vertical pipes.
Connecting vibro d that connects the rear ends of the left and right vertical pipes
etc., and a steering assembly l is attached to the frame.
O, mission assembly 11, engine assembly 1
2. Lifting assembly 13, rear case assembly 14
Each assembly and the planting clutch 15 are assembled. As members for assembling these assemblies, etc., there are brackets 16 and 16 erected at the front ends of the vertical vibros a and 6a, a mission base 17 and a support leg base 18, which are suspended between the left and right vertical vibros a and 6a. , vertical vibro a just above the horizontal vibro c on the rear side,
An engine base 19 installed on top of the vertical frame 6a, a rear wheel rolling shaft 20 projecting rearward from the connecting vibro d, and a planted clutch base 21 installed at the rear of one (right side) vertical frame 6a are provided. .

Moreover, a circular link support frame 90 is erected on the connecting vibro d when viewed from the rear. Horizontal vibro b.

Both left and right ends of 6C are raised diagonally to a predetermined height, and the body 130 can be attached thereon.

Engine assembly 12 (1, the engine base 19
It consists of an engine 22 installed above, an air cleaner 23 provided above the engine, a fuel tank 24, etc.
Also, the engine output shaft 2 protrudes forward from the engine 22.
A main clutch 25 is provided at 2a. The main clutch 25 is a multi-plate clutch, and the clutch pedal 2
By operating the switch 6, the shifter 27 is actuated to perform on/off control. Note that the pivot shaft 2 of the shifter 27
8 is supported by a bearing 29 provided on a support leg 44, which will be described later. Belt yI3 is attached to the primary pulley 30 of the main clutch.
1 is provided, and a hydraulic pump 34 integrally assembled to the support leg 44 is driven by a V-belt 32 hooked thereon.

The Mi2 construction assembly 11 includes a H3T case 40, a transmission case 41, a front differential case 4 as shown in the figure.
2. It is assembled with rear differential case 43 etc.
The bottom of the transmission case 41 is supported by the mission base 17, and the lower end of a support leg 44 provided at the rear of the front differential case 42 is supported by the support leg base 18.

Left and right front axle cases 46.46 are protruded from the sides of the front differential case 42, and a front wheel support case 47.47 is supported at the ends thereof so as to be freely variable in direction. and,
A front wheel shaft 4 protruding from the outer surface of the lower end of this front wheel support case
Front wheels 48.48 are pivotally supported by 8a and 48a. Tie rod arms 49, 49, which will be described later, are provided on the outer peripheral surface of the front wheel support case 47.47 to protrude forward.

Engine output is transmitted from the secondary side of the main clutch 25 to the H5T case 40 via the universal joint 51. This rotational output is a hydraulic continuously variable transmission (H3T) inside the H3T case 40.

The main transmission in the mission case 41, the inter-strain transmission, etc. change the speed as appropriate, and output as front wheel drive output, rear wheel drive output, and working part drive output.

The front wheel drive output is transmitted to the front wheel axles 48a, 48a via the front differential device in the front differential case 42, the left and right front axles supported in the front axle case 46, and the transmission mechanism in the front wheel support case. The rotational forces of the left and right front wheels 48, 48 have a ratio according to their respective rotational resistances due to the action of the front differential device.

The rear wheel drive output is transmitted to the rear differential device in the rear differential case 43 and output to rear differential output shafts 52, 52 that protrude rearward from both sides of the rear surface of the rear differential case 43. Further, the working part drive output is transmitted to the planting clutch 15 installed on the planting clutch base 21 via the planting part drive shaft 53. Planting PTO shaft 56 that transmits power from this planting clutch 15 to 1 work Ia portion 4 and fertilization? A fertilization PTO shaft 57 that transmits power to tlt5 is protruded.

The rear case assembly 14 is connected to the rear wheel rolling shaft 2.
0, a horizontal rod 60 that can be freely rolled in a vertical plane, and a case 61 provided at both left and right ends of the horizontal rod.
．． 61, and rear wheels 62 and 62 are pivotally supported by rear wheel shafts 62a, 62a that protrude outward from the rear case.

An input shaft 64.64 protrudes from the front surface of the rear case 61.61, and the input shaft and the rear differential output shaft 52.52
and are transmission-connected via a rear wheel drive shaft 65.65.

As shown in FIG. 6, the steering assembly 10 includes a steering wheel 70 for operation (not shown in the figure), and a steering shaft 71. which is housed in a steering post 71a and has the steering wheel 70 attached to its upper end. A pinion shaft 73 connected to the lower end of the steering shaft via a joint 72. It consists of a reduction case 74 into which the lower end of the pinion shaft is inserted, a gear shaft 75 projecting downward from the reduction case, a left and right P/) man arm 76 fixedly attached to the projection of the gear shaft, etc. pitman arm 7
6 and the tie rod arms 49 and 49 of the front wheel support case cross each other.
78.

The rotational force applied to the steering wheel 70 is reversed and decelerated by a pinion 73a attached to a pinion shaft 73 and a large-diameter fan-shaped gear 75a attached to a gear shaft 75, and then transmitted to the pitman arm 76. This movement of the pitman arm 76 is transmitted to the front wheel support case 47.47 via the tie rod 78.78, and the front wheel 48
．． 48 will be turned around. These steering assemblies 10 have a deceleration case 74 housed in the space between the brackets 16 and 16, and a mounting hole 1 of the bracket.
6a, . . . and the mounting holes 74a of the reduction case.

By fixing both with a bolt inserted through...

It is assembled to the frame 6.

As shown in FIG. 8, the elevating assembly 13 includes a hydraulic cylinder 80 for elevating the working machine part and a lunoid 81 for initial marker use, etc., which are integrally assembled, and the base 80a of the hydraulic cylinder is attached to the horizontal vibro C. It is pivotally attached to the back surface, and the tip of the load 80b is connected to the lower end of a swing arm 96, which will be described later, via a spring 82. This hydraulic cylinder 80 is supplied with pressure oil from the hydraulic pump 34 and is controlled by a control valve 118, which will be described later.

84 in the figure is a marker operation wire, and each time the aircraft turns during work, the left and right wires 84 are
．． 84 operate in opposite directions, and one marker (not shown) is alternately lowered and raised. In addition, 85 is a marker pulling bolt, and when the cylinder rod 80b protrudes by a certain amount at the end of one work, the marker pulling plate 86 attached to the piston rod 2 80b is attached to the head 85 of the marker pulling bolt 85.
By pressing a in a predetermined direction, the left and right wires 84
．． 84 is forcibly pulled, causing both the left and right markers to stand up.

In the link device 3, an upper link 91 and a lower link 92 are rotatably supported by a support frame 90 fixedly provided on the connecting vibro d, and a connecting frame 94 is attached to the rear end of these upper and lower links.
is installed. The work implement portion 4 is mounted on this connection frame 94 in a rolling manner. Upper link 91
A swing arm 96 is integrally provided vertically at the base of the swing arm 96, and the rod 80b of the hydraulic cylinder is connected to the lower end of the swing arm 96. When the hydraulic cylinder 80 is expanded or contracted, the connecting frame 94 is moved up and down while being maintained in a substantially constant position, and the working machine portion 4 attached thereto is raised and lowered.

The working machine part 4 includes a transmission case 100 that receives power from the planting PTO shaft 56, and a seedling stand lO1 that is provided in front of the transmission case with an inclination such that the front side is upward.
Each row is equipped with two sets of planting rods 102, . The attachment rod 102 moves up and down while drawing a predetermined trajectory, and the seedlings supplied to the seedling outlet are held by the planting claws 102a provided at the tip of the planting rod and planted in the field. It has become. Note that when the seedling platform 101 reaches the end of the left and right travel and finishes supplying one horizontal row of seedlings to the seedling outlet.

A belt-type seedling feeding device 1104 is activated to transport the seedlings downward by one row.

On the lower side of the work equipment section 4, a center float 111 and a pair of left and right side floats 112, 112, which are rotatably pivoted up and down to a float support rod lIO rotatably attached to the transmission case lOO, are attached to the paddy field. supported on the surface.

The front part of the center float l11 is suspended by an expansion link 114 that expands and contracts vertically, and the side floats 112, 1
The front part of 12 is a sliding link 115, 115 that slides up and down.
is hung by. These floats are sensors that detect the height of the field, and a vertical motion detection rod 117 is provided upwardly protruding from the front part of the center float lll.

As shown in FIG. 9, this vertical motion detection rod 117 has a long hole 117a, into which a pin 120 provided on a valve arm 119 of a hydraulic valve 118 that controls the hydraulic cylinder 80 is loosely fitted. There is. In addition, the hydraulic valve 118
is fixedly provided at the front of the transmission case 100.

When the center float 111 moves L by a predetermined amount or more, the hydraulic valve 118 is driven in a direction to extend the hydraulic cylinder 80, and the work implement portion 4 is raised. Further, when the center float lll moves downward by a predetermined amount or more, the hydraulic valve 118 is driven in the direction of contracting the hydraulic cylinder 80,
The work implement part 4 is lowered. In this way, by appropriately raising and lowering the working machine part 4 according to changes in the height of the rope surface,
The height from the field surface to the planting rod 102 is always maintained at an appropriate level, and the planting depth of the seedlings can be maintained constant. By changing the angle of the float support rod 110 to change the support height of the float, the planting depth can be adjusted.

The fertilizer applicator t5 includes a fertilizer tank 121 for storing fertilizer and a feeder 122 which is driven via the fertilizer PTO shaft 57 and feeds out the fertilizer in the fertilizer tank downwards above the support frame 90. The delivered fertilizer is guided downward through a fertilization pipe 123 and supplied to a fertilization groove formed in the field by a groove cutter 124.

Further, a blower 126 is provided in the engine compartment 125,
By sending the hot air in the engine room sucked by the blower into the fertilizing pipe 123, the flow of fertilizer in the pipe is improved.

It is designed to prevent fertilizer from becoming fine in the pipe.

When assembling the traveling vehicle body 2 of this agricultural machine, each assembly 10-14 is assembled in a separate process, and each of these assemblies and the planting clutch 15 are assembled to the frame 6 in the final assembly process. ．．
48 and rear wheel 62°62. Link acid to the chassis assembled in this way! 3, and also the body 130 and the cockpit 131. Also, if necessary, link the appropriate working machine parts with acid! Attach it to 13.

[Effects of the Invention] As explained above, in the riding agricultural machine according to the present invention, each part is assembled to the frame in assembly units, so one assembly process is simplified, and
The assembly work itself has also become easier. Additionally, necessary parts can be removed in assembly units from the completed vehicle body, making repairs and inspections easier.

[Brief explanation of drawings]

FIG. 1 is a side view of a riding fertilizing rice transplanter which is an example of the present invention;
Fig. 2 is an explanatory diagram of the assembly of the chassis, Fig. 3 is a rear view of the traveling body frame, Fig. 4 is a side view of the engine assembly and transmission assembly, Fig. 5 is a plan view thereof, and Fig. 6 is an illustration of the steering assembly. 7(a) and (b) are a plan view and a side view of the planting clutch, and FIGS. 8(a) and (b) are a plan view and a side view of the lifting assembly. , FIG. 9 is a side view of the main part of the work machine. 1... Riding fertilizer application rice transplanter (riding agricultural machine), 2... Traveling vehicle body, 3... Link device, 4... Working machine part, 5
-... Fertilizer application device, 6... Frame, 10... Steering assembly, 11... Mission assembly,
12... Engine assembly, 13... Lifting assembly, 14... Rear case assembly, 15...
Planted clutch, 22...Engine, 24...Main clutch, 34...Hydraulic pump, 40...H3T case, 41...Mission case, 42...Front differential case, 43...Rear differential Case, 48...
Front wheel, 61... Rear case, 62... Rear wheel, 70.
... Steering wheel, 80... Hydraulic cylinder.

Claims (1)

[Claims] (1) A steering assembly in which steering-related parts are assembled and integrated into the frame of the vehicle body arranged at the front and rear, a transmission assembly in which parts related to the transmission and differential are assembled and integrated, and an engine and its related parts. A riding agricultural machine characterized in that an engine assembly is assembled and integrated, and a lifting assembly that is assembled and integrated with a hydraulic system for lifting and lowering a working machine part and its related parts are each independently attachable and detachable.