JP2001258311A - Line drawing marker for working machine for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To draw a line at a constant depth by a line drawing marker of a rice transplanter. SOLUTION: A center float 28 is vertically adjusted relatively to a planting apparatus 9 attached to a machine body so as to vary a planting depth. The line drawing marker 38 is supported on the main body equipped with the planting apparatus 9. When the depth and shallowness of the planting depth of the planting apparatus 9 is regulated by the vertical control of the center float 28, the marker 38 is relevantly moved in the up-and-down motion direction of the center float 28. Consequently, the projection length of the marker 38 projected from the bottom of the center float 28 into soil is always made constant, the tip of the marker 38 is plunged into soil at a fixed depth and a line drawing at a fixed depth is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a drawing marker of a paddy working machine.

[0002]

2. Description of the Related Art In a rice transplanter capable of adjusting a planting depth by adjusting a ground contact body up and down with respect to a planting device attached to a machine body, a line quote is attached to the machine body having the planting device 9 attached thereto. It supports the marker.

[0003]

In the conventional apparatus, a marker for drawing a line is fixedly attached at a predetermined position to the planting device. If the planting depth is changed by adjusting up and down, the rush length of the marker tip into the soil changes according to the planting depth of the seedling,
In the case of shallow planting, the intrusion length is short, in the case of deep planting, the length is long.

Accordingly, the present invention is to solve such a problem.

[0005]

According to a first aspect of the present invention, there is provided a planting apparatus, comprising: The planting depth is configured to be changeable, a marker 38 for drawing a line is supported on the body on which the planting device 9 is mounted, and the planting depth of the planting device 9 is adjusted by adjusting the grounding body 28 up and down. In connection with the adjustment, the marker 38 is moved in a direction in which the grounding body 28 moves up and down.

[0006]

According to the first aspect of the present invention, the support height of the grounding body 28 is moved up and down with respect to the planting device 9 by the planting depth adjusting lever 34 to adjust the planting depth of the seedlings. Then
The support height of the marker 38 is also adjusted in connection with the vertical movement of the grounding body 28, the length of the marker 38 projecting from the bottom surface of the grounding body 28 into the soil becomes constant, and the tip of the marker 38 is always attached to the planting surface. From the ground to a certain depth, it is possible to draw a certain depth reliably.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. 1 to 3 show a four-row rice transplanter. At the front of the rice transplanter 1, an engine unit including an engine 2, a transmission case 3, and the like is arranged, and an upper portion of the engine unit is covered with a bonnet 4. The bases of the traveling chain cases 6 and 6 are vertically rotatably fitted to and supported by the left and right cylindrical portions 5 and 5 protruding laterally from the side surfaces of the transmission case 3. The parts support the paddy wheels 7,7.

The rear end of the transmission case 3 is fixedly connected to the front end of a main frame 8, and the rear end of the main frame 8 is provided with planting devices 9, 9,. The planting frame 11, which also serves as a transmission case for transmission, is integrally attached. Further, a rear frame 12 is attached to a rear surface of the planting frame 11. The rear frame 12 has an intermediate portion curved upward and a rear end extending diagonally rearward. At the rear end of the rear frame 12,
A steering handle 13 and various operation levers are attached.

A hydraulic pump 14 is provided on the left side surface of the transmission case 3, and a hydraulic valve unit 15 is provided on the upper surface portion. Then, the lifting / lowering hydraulic cylinder 16 is arranged rearward from the back of the hydraulic valve unit 15, and the link plate 1 urged backward by the spring 17 to the tip end of the piston rod of the lifting / lowering hydraulic cylinder 16.
8 are mounted horizontally along the left-right direction. The left and right ends of the link plate 18 are connected to the front ends of the left and right connecting rods 19, 19, and the rear ends of the connecting rods 19, 19 extend upward from the bases of the traveling chain cases 6, 6. The upper ends of the arms 20, 20 are connected. The left connecting rod 19 is constituted by a rolling hydraulic cylinder 21.

The lifting hydraulic cylinder 16 constitutes a hydraulic lifting device. When the hydraulic cylinder 16 is extended and contracted, the left and right swing arms 20 and 20 rotate back and forth by the same angle, and the left and right wheels 7 and 7 are moved by the same amount. Only the aircraft moves up and down with respect to the aircraft, and the aircraft moves up and down. Also, rolling hydraulic cylinder 2
1 to change the length of the left connecting rod 19, the left swing arm 20 rotates and the left wheel 7
Only the vertical movement with respect to the aircraft changes the inclination of the aircraft in the left-right direction.

The planting frame 11 includes a gear box 11a located at the center in the left and right directions, and two planting chain cases 11 each disposed on the left and right sides of the gear box 11a.
b, 11b, ..., two planting chain cases 1 each on the left and right
Connecting pipes 11c and 11 for connecting between 1b and 11b
c.

Power is transmitted from the transmission case 3 to an input portion of the gear box 11a via a planted transmission shaft 22. The transmitted power is transmitted to the gear box 11a and the upper part of the planting chain cases 11b, 11b,.
, 11b,... through the right and left planting portion transmission shaft 25 housed therethrough.
It is a structure to transmit to.

The planting devices 9, 9,...
Are provided at the lower ends of the planting chain cases 11b, 11b,..., Respectively.
Is divided and taken out from the plant, and planted in a field scene.

The seedling mounting table 10 is provided on the front side of the rear frame 12 so as to be inclined downward and forward, and is configured to reciprocate left and right with the seedlings mounted thereon. .. Are supplied to the seedling outlets 10a, 10a,... One by one, and when all the seedlings at the lowermost stage have been planted, the belt-type seedling feeders 10b, 10b,. In this configuration, the seedlings on the table are sent downward by one stage.

Below the fuselage, a center float 28 for leveling and a pair of left and right side floats 29, 29 are provided. The rear of these floats is
The rear end of the float is pivotally supported by a pin 31, and the front of the float moves up and down according to the unevenness of the topsoil surface. Also, the floats are suspended and supported on the transmission case 3 by suspension links 32, 32,... So as not to fall below a certain angle.

The float support arms 30, 30,... Are integrally attached to float support pipes 33, 33 rotatably supported on the rear frame 12, and the float support arms 30, 30,. When the pipe 33 is rotated, the support height of each of the floats 28, 29, 29 is changed, thereby adjusting the planting depth of the seedlings.

When the aircraft is advanced with the floats 28, 29, 29 in contact with the ground, the center float 28 levels the two central seedlings and the side floats 29, 2
Numeral 9 denotes a configuration in which the right and left seedling planting strips are individually grounded. FIG. 3 is a hydraulic control mechanism diagram. The hydraulic valve unit 15 includes a lifting control valve 36 for controlling the lifting hydraulic cylinder 16, a rolling control valve 37 for controlling the rolling hydraulic cylinder 21, and a pressure supplied from the hydraulic pump 14. A diversion valve 35 for distributing and supplying oil to the elevation control valve 36 and the rolling control valve 37 is provided.

Next, the line quote marker 38 will be described with reference to FIG. A float support arm 30 is integrally attached to a float support pipe 33 rotatably supported on the rear frame 12, and a center float 28, a right and left side is provided at a rear end of the float support arm 30 via a pin 31. The rear of the floats 29, 29 are pivotally supported. A marker support rod 39 having a marker 38 attached to the tip at one of the left and right ends of the float support pipe 33.
The planting depth adjusting lever 3
When the float supporting pipe 33 is rotated by 4 to change the supporting height of each of the floats 28, 29, 29 to a height, and the planting depth of the seedling is adjusted, the marker supporting rod 39 also rotates integrally. Thus, the support height is adjusted in relation to each of the floats 28, 29, 29, and the lower end of the marker 38 projects downward by a certain length from the bottom surface of the float. It is to enter the soil and draw a line with a certain depth without fail.

When the planting operation is completed to the end of the field and the direction of the machine is changed, the line drawn by the marker 38 in the previous process is set as the planting position of the outermost planting device and the walking type is set. The rice transplanter is run. In the conventional device, the length of the tip of the marker that rushes into the soil of the field changes depending on the adjustment of the planting depth of the seedling, the amount of rush is short in the case of shallow planting, and in the case of deep planting. However, there is a problem in that the length of the marker becomes long, the drawing of the line is poor at the time of shallow planting, and the resistance is excessively applied to the marker at the time of deep planting.

However, with the above configuration, even if the planting depth changes, the depth of the tip of the marker that enters the soil becomes constant, and it is possible to draw a line with a constant depth. be able to. In this embodiment, the case where the drawing marker is applied to the rice transplanter has been described. However, the present invention can be widely applied as a drawing device of another paddy working machine that works in a paddy field.

Next, referring to FIG. 5, another embodiment in which the amount of the drawn marker entering the soil is set to a constant depth will be described.
At a position displaced outward in the left-right direction by one interval from the planting position of the outermost planting device 9 on the rear frame 12,
A support cylinder 40 is disposed, and the marker 38 is supported on the support cylinder 40 so as to be vertically movable, and is urged to move downward by the spring 17. One end of the operation wire 41 is connected to the upper end of the marker 38. are doing.

When the operation wire 41 is pulled,
By shortening the spring 17, the marker 38 moves upward,
When the operation wire 41 is loosened, the marker 38 is moved downward by the spring 17 and can be adjusted up and down. A float support arm 30 is integrally attached to a float support pipe 33 rotatably supported on the rear frame 12, and a center float 28, a right and a left, is attached to a rear end of the float support arm 30 via a pin 31. The rear portions of the side floats 29, 29 are pivotally supported. The other end of the operation wire 41 is connected to a planting depth adjusting lever 34 integrally attached to the float support pipe 33.

When the planting depth adjusting lever 34 is turned to the shallow planting side or the deep planting side and the float is moved down or up, the marker 38 is also moved up or down in relation to it. I do. Therefore, regardless of the depth of planting,
The tip of the marker 38 is always intruded into the soil for a predetermined length from the bottom surface of the float, and it is possible to draw a line of a constant depth.

Next, another embodiment of the drawing marker shown in FIGS. 6 and 7 will be described. As shown in FIG. 6, the rear frame 12 is provided with markers 38 on the left and right sides of the planting devices 9, 9 for delineating the center position of the machine body in the next step on the field scene. The marker 38 is configured to switch between a line drawing state protruding to the side of the machine body and a housed state pulled up to fit within the machine body width.

The support structure of the marker 38 will be described more specifically with reference to FIG. A marker support 45 is pivotally supported on the rear frame 12 by a pin 31, and a stopper 4 is provided near the pivot support.
6, a marker 38 is attached to one side of the marker support 45, and a marker reset lever 42 is connected to a connection hole 45 a provided near the mounting position of the marker 38, and the other end of the marker support 45 is provided. Is connected to a spring 47 for urging the marker 38 to the pulling side.

An actuating body 48 is pivotally supported by the pin 31 on the side of the marker support 45, and a stop surface 48b is formed in the vicinity of the pivotal support portion so that the stopper 46 abuts. One end is connected, and the other end of the link wire 49 is linked to a side clutch lever (not shown).

Next, the linking operation between the marker support 45 and the operating body 48 will be described. FIG. 7A shows a drawn state in which the marker 38 is rotated downward and protruded to the side of the body, and the operating body 48 is linked to the engaged state of the side clutch lever. Thus, the lock portion 48 of the operating body 48
a fits into the concave portion 45b of the marker support 45, locks the marker support 45 at the drawing position, and holds the marker 38 in the drawn state.

When one row of planting work is completed in the rice transplanter and the side clutch lever is operated to be turned to change the direction, the operating body 48 rotates clockwise as shown in FIG. 7 (2). The lock portion 48a of the operating body 48 is
5 and the marker support 45 is separated from the spring 47
Rotates clockwise. Then, the stopper 46 of the marker support 45 contacts the stop surface 48b of the operating body 48, and the upward rotation of the marker support 45 is temporarily stopped.

Next, the stopper 4 on the marker support 45 side
6 moves downward along the arc-shaped stop surface 48b on the side of the operating body 48, and separates from the stop surface 48b. Then
As shown in FIG. 7C, the marker support 45 further rotates clockwise, and the marker 38 moves up to the storage position.

As described above, when the marker 38 is rotated upward from the drawn state to the stored state, the marker 38 is temporarily stopped at an intermediate portion and is rotated and stored in two stages. The marker 38 can be stored in a state where the attached mud is shaken off by inertia force and cleaned.

[Brief description of the drawings]

FIG. 1 is an overall side view of a walking rice transplanter.

FIG. 2 is an overall plan view of the walking rice transplanter.

FIG. 3 is a diagram of a hydraulic control mechanism.

FIG. 4 is a side view of a main part.

FIG. 5 is a side view of a main part.

FIG. 6 is a perspective view of a main part.

FIG. 7 is a side view of a main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Engine 3 Transmission case 4 Bonnet 5 Cylindrical part 6 Running chain case 7 Paddy field wheel (wheel) 8 Main frame 9 Planting device 10 Seedling stand 10a Seedling outlet 10b Seedling feeding device 11 Planting frame 11a Gearbox 11b Planting chain case 11c Connecting pipe 12 Rear frame 13 Handle 14 Hydraulic pump 15 Hydraulic valve unit 16 Elevating hydraulic cylinder 17 Spring 18 Link plate 19 Connecting rod 20 Swing arm 21 Rolling hydraulic cylinder 22 Planting transmission shaft 25 Planting transmission shaft 27 Seedling feeder 28 Center float (grounding body) 29 Side float (grounding body) 30 Float support arm 31 Pin 32 Hanging link 33 Float support pipe 34 Planting depth adjustment lever 35 Split valve 36 Elevation control valve 37 Rory Grayed control valve 38 marker 39 marker support rod 40 supporting cylinder 41 operating wire 42 marker reset lever 45 markers support 45a connecting hole 45b recessed portion 46 stopper 47 spring 48 operative member 48a lock portion 48b stops surface 49 linking wire

Claims (1)

[Claims] 1. A planting device 9 mounted on a machine body is configured so that a planting depth can be changed by adjusting a grounding body 28 up and down, and a line is attached to the machine body on which the planting device 9 is mounted. In connection with the depth adjustment of the planting depth of the planting device 9 by supporting the cited marker 38 and adjusting the grounding body 28 up and down,
A marking marker for a paddy field working machine, wherein the marker 38 is moved in a direction in which the grounding body 28 moves up and down.