JPS63126410A - Running apparatus of agricultural working machine for rice field - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a traveling device for agricultural machinery for paddy fields, such as a rice transplanter or a water seeder.

Prior Art Conventionally, as disclosed in Japanese Unexamined Patent Application Publication No. 60-262509, rice field wheels are mounted on the left and right sides of the machine to which the rice transplanting device is attached via transmission cases that rotate up and down independently. and the left and right transmission cases are configured to be vertically moved by hydraulic cylinder devices controlled by separate hydraulic valves to control the elevation of the ten water wheels, and between the hydraulic cylinder device and the aircraft body, Said rice field "11"
1 is provided with a floating mechanism configured to be able to move up and down by a predetermined amount without depending on the operation of the hydraulic cylinder, and the hydraulic valve is switched by ground pressure detectors specially mounted on the left and right sides at the bottom of the fuselage. A traveling device for a rice transplanter that is controlled to eliminate left and right tilting has been known.

Problems to be Solved by the Invention The conventionally known water ED working machine running device is a hydraulic cylinder system in which the paddy wheels are operated simply by an idler mechanism and independently by a hydraulic valve switching command from a ground pressure detector. Because the vehicle was configured to be controlled up and down by the vehicle, it was not possible to greatly control the height difference between the left and right wheels when the control was activated, and it was also impossible to increase the speed of tilt correction during control, making it difficult to accurately control the vehicle. There was a drawback that it could not be done.

Means for Solving the Problems The present invention has taken the following technical means to solve the above problems.

That is, paddy wheels 16.17 are provided on both left and right sides of the machine body 1 on which agricultural equipment is attached, and are mounted on axle via transmission cases 14.15 that rotate up and down independently, and the left and right transmission cases 14.15 The auxiliary hydraulic cylinder device 1819 and the aircraft body are configured to move up and down by hydraulic cylinder devices 18 and 19 controlled by respective hydraulic valves 10 and 11 to control the raising and lowering of the rice paddy wheels 16 and 17, respectively. A floating mechanism is provided between the hydraulic valve 10 and the hydraulic valve 10, and the paddy wheel 16.17 is configured to be able to move up and down by a predetermined amount without depending on the operation of the hydraulic cylinder device 18.19.
．． 11 is controlled by ground pressure detectors 33 and 34 specially installed on the left and right sides at the bottom of the fuselage to eliminate the left and right tilt of the fuselage. The traveling device for a rice paddy agricultural machine is configured such that hydraulic valves 10 and 11 are switched when the idler mechanism is operated beyond a predetermined level.

Functions and Effects of the Invention According to the present invention, the hydraulic valves of the pair of left and right paddy wheels are switched by the pressure difference between the left and right ground pressure detectors when the aircraft is tilted to the left and right, and the paddy wheels are independently operated by the hydraulic cylinder device. Elevation control is performed to correct the left and right tilt of the aircraft, but if the idler mechanism works beyond a certain level when one wheel is controlled to descend, the hydraulic valve is switched to the side that moves the other wheel upward. will automatically move and correct the tilt of the aircraft all at once. Since such swing control is performed by a command from the swing mechanism, it does not work when the swing mechanism does not work when the aircraft tilts so small that the aircraft is not tilted unnecessarily and propulsion is controlled.

Therefore, according to this invention, only when the aircraft has a large inclination, the left and right wheels are controlled to rapidly correct the inclination, and when the aircraft has a small inclination, the left and right wheels are simply controlled independently to correct the inclination of the aircraft. The correction is carried out, and the effect is that the aircraft can be stably propelled without causing unnecessary vibration of the aircraft.

Embodiment 11 A transplanter which is an embodiment of the present invention will be described in detail with reference to the drawings.

1 is the fuselage, and the engine stand 3 is located at the front of the mission case 2.
is attached, and a connecting frame 5 for connecting the rice transplanting machine 4 is attached to the rear.

Reference numeral 6 denotes an engine, which is mounted on the engine stand 3.

7 is a hydraulic system, which is located on the engine stand 3 behind the engine 6, and includes a hydraulic pump 8.9. Hydraulic valve 10.11.
It is made up of hydraulic tanks 12, etc.

13 is a fuel tank.

Reference numerals 14 and 15 designate a transmission case, and its base portion is pivotally connected to the mission case body side so as to be rotatable around a drive shaft protruding from the left and right sides of the mission case 2.

16.17 is the rice field wheel, the above-mentioned story! PIj case 14.
15 on the side of the distal end thereof.

18. 19 is a hydraulic cylinder device, and a balance rod 21 is pivotally connected to the front end side of the body 1 at the left and right middle with a vertical pin 2o.
Spring 22 is attached to cylinders 18a and 19a at both ends of
Install the piston 18 so that it is elastically supported by a and 22b.
The tips of b and 19b are connected to an arm 23.24 integral with the transmission case 14.15, so that when the pistons 18b and 19b protrude, the paddy wheel 16.17 descends.

The m-planting device 4 includes a main transmission case 25a attached to the rear end of the connection frame 5, and sub-transmission cases 25b, 25b attached to both left and right sides of the main transmission case 25a via cylindrical horizontal cases 26.26. Seedling planting tools in each case 27.
... is installed on the rear side of the main transmission case 25a.
A control handle 29 is attached through the handle 29, and a seedling supply stand 30 that reciprocates horizontally from side to side is provided above the handle 29, and the seedling planting tools 27, 27, . . . The structure is such that the seedlings placed and housed in the container are divided and planted.

Reference numerals 31 and 32 denote ground pressure detectors, which are arranged separately on the left and right at the lower front side of the aircraft body 1, and the rear side is pivotally connected to the connecting frame 5 with a horizontal bin, so that the front side can freely move up and down. It is provided. The left detection body 31 and the hydraulic valve 10 that controls the left hydraulic cylinder 18 are linked by a link mechanism 33, and the right detection body 32 and the right hydraulic valve 11 are linked by a link mechanism 34. Make it interlocked with
When the left or right detection body 31, 32 moves upward from a certain vertical range and approaches the aircraft side, the hydraulic valves 1o, 11 are switched so that the pistons 18b, 19b of the hydraulic cylinder device 18, 19 protrude. Conversely, when moving downward and away from the body, the hydraulic valves 10 and 11 are configured to switch so that the pistons 18b and 19b retract.

Note that 35 and 36 are switching arms for the left and right hydraulic valves 10 and 11.

The balance rod 21 and the left and right switching arms 3
Release wire 37.3 intersecting with 5.36
8 is connected as follows. That is, the right side 2 of the balance rod 21
1a rotates forward beyond a certain level and the release wire 38
When the inner wire 38a is pulled, the hydraulic valve 10 is switched so that the left wheel 16 moves upward,
Conversely, when the left side 21b of the balance rod 21 rotates forward beyond a certain level and the inner wire 378 of the release wire 37 is pulled, the hydraulic valve 11 is switched so that the right wheel @17 moves upward. It is configured.

Thus, in the embodiment of the present invention, the balance rod 21 and the springs 22a, 22b function as a floating mechanism.

39 is a center float, which is placed between the left and right wheels at the rear of the aircraft. 40.41 are side floats, which are placed on the outside of the left and right wheels.

Each of these floats 39, 40, 41 has its rear part pivotally connected via a metal fitting to a shaft 43 that is moved up and down by a planting depth adjustment lever 42, and its front part that is also movable in conjunction with the lever 42. It is attached to an arm 44 and connected via a link 4G to a shaft 45 that moves up and down like the shaft 43.

To explain the above effect, when planting seedlings, when the depth to the plowing plate in the paddy field becomes uniformly shallow throughout, it becomes 1.
Since the aircraft moves upward from the topsoil surface, the ground pressure detector 31.
32 are both far downward from the fuselage, and the hydraulic valve 10.11 is connected to the pistons 18b, 19 of the hydraulic cylinder device 18.19 via the connecting linkage 33.34.
b is switched to protrude, and the wheels 16.17 are automatically controlled to be lowered via the arm 23.24 and the transmission case 14.15. Conversely, if the depth to the plowing platform becomes uniformly deep throughout, the left and right ground pressure detectors 31.
Since both valves 32 and 32 are pushed up, the hydraulic valve 1
0.11 will be switched, wheels 16.17
This means that the increase will be controlled automatically.

Next, if the tiller changes in the left-right direction or there are irregularities on only one side, only the ground pressure detector 31, 32 on the left or right side will detect the hydraulic valve 1o on the left or right side.
11, or by switching the hydraulic valves 10 and 11 to opposite sides to independently control the elevation and descent of the left and right wheels 16 and 17, automatically controlling the left and right tilt of the aircraft to return to the horizontal state.

In this way, as the tiller changes, the paddy wheels 16.
17 is controlled to rise and fall in accordance with this, and the aircraft is propelled accurately. For this reason, the H'' planting device 4 should be used to plant the plants at a constant spacing and at a predetermined planting depth.

Next, if the depth of the tiller is quite large and the aircraft tilts to the left or right, or if the aircraft tilts significantly when turning, the weight on the left and right wheels 16 and 17 will be different, so the balance will The rod 21 rotates around the bin 20 and tilts.

At this time, the inner wire of the release wire attached to the end of the lever on the side where the wheel has moved up is pulled, and the hydraulic valve on the opposite side switches the piston of the hydraulic system on that side to protrude, lowering the wheel. For example, when the left wheel 16 moves up significantly, the right wheel 17 is automatically lowered, and when the right wheel 17 moves up significantly, the left wheel 16 is automatically lowered.

Therefore, the aircraft is quickly returned to the left and right horizontal state. In addition, it is possible to accurately propel the tiller even in fields where there is a large difference in height between the left and right sides of the tiller.

As shown in FIGS. 4 and 5, the balance rod 21 and the hydraulic valve 10.11 may be linked to the left and right side floats 40.41.

That is, the inner wire 3 is connected to the switching arm 35, 36.
An interlocking link mechanism in which the inner wires 37a, 38a are provided between the tips of the side floats 40.41 and the fuselage 1 by providing holes through which the outer wires 37b, 38b can be inserted and stopping the ends of the outer wires 37b, 38b from being received. 47.48
When the side float 40.41 moves upward, the inner wires 37a, 38a are pulled, and the tension force of the outer wires 7b, 38b causes the hydraulic valve 10.11
The wheel is configured so that it can be switched to the side where the wheels are lowered.

In this way, the sensitivity of the correction control when the aircraft body is significantly tilted to the left or right becomes better, and more accurate wheel control is achieved.

Furthermore, in FIG. 7 of another example, 11" constitute the floating mechanism.
In place of the supplementary balance rod 21, a plate spring 49 is provided at the tip of the engine stand 3, with the left and right center portions fixed. The release wires 37 and 38 of each of the embodiments described above may be connected to the left and right ends.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a hydraulic circuit diagram, and Fig. 4 is a side view of main parts of another example. 5 is a plan view thereof, FIG. 6 is a sectional view of the main part, and FIG. 7 is a plan view of the main part of another example. Symbols in the diagram: 1 is the aircraft body, 10.11 is the hydraulic valve, 14
．． 15 is a transmission case, 16.17 is a paddy wheel, 33.3
4 indicates a ground detection object.

Claims (1)

[Claims] Paddy wheels 16 and 17 are provided on both the left and right sides of the machine body 1 on which agricultural equipment is mounted, and are mounted on the shaft via transmission cases 14 and 15 that rotate up and down independently, and the left and right transmission cases 14,
15 are vertically moved by hydraulic cylinder devices 18 and 19 controlled by special hydraulic valves 10 and 11, respectively, to control the raising and lowering of the rice paddy wheels 16 and 17. A floating mechanism is provided between the machine body 1 and the paddy wheels 16 and 17 are configured to be able to move up and down by a predetermined amount without depending on the operation of the hydraulic cylinder devices 18 and 19, and the hydraulic valves 10 and 11 are switched. Ground pressure detectors 33 and 34, which are specially installed on the left and right sides at the bottom of the fuselage, are switched to control to eliminate the horizontal tilt of the fuselage, and the floating mechanism and hydraulic valves 10 and 1
1. A traveling device for a rice paddy agricultural machine, which is configured such that hydraulic valves 10 and 11 are switched when an idler mechanism is operated beyond a predetermined level.