JP2981258B2 - Horizontal control mechanism in paddy working machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rice transplanter, a seeder, and a fertilizer that are provided with a freely rotatable float below a traveling body and left and right swing wheels on both sides of the traveling body. Etc. pertains to a horizontal control mechanism in a paddy working machine.

[Conventional technology]

Generally, this type of paddy field working machine is known to be provided with a weight sensor for detecting the inclination of the machine body from side to side, and a horizontal control mechanism for changing the relative height of the swing wheel in conjunction with the swing of the weight sensor. ing.

[Problems to be solved by the present invention]

However, the conventional horizontal control mechanism always controls the body in a horizontal state based on the direction of gravity regardless of the field surface of the field. Therefore, when the float is inclined, the planting accuracy on the field surface is not good. Therefore, in order to improve the planting accuracy, it is desirable to control the body attitude even when the float is tilted.

However, apart from the conventional horizontal control, to control the body attitude even when the float is tilted, it is necessary to provide an operating mechanism such as a hydraulic valve that is linked to the tilt of the float. There is a problem that the cost increases.

The present invention has been made in view of the above-described circumstances, and in performing paddy work, when the aircraft is tilted, the attitude of the aircraft can be horizontally controlled in conjunction with the swing of the weight sensor, and the same applies when the float is tilted. It is an object of the present invention to provide a horizontal control mechanism in a paddy field working machine that can control the attitude of the machine body with the horizontal control mechanism and improve the planting accuracy.

[Means for solving the problem]

In order to solve the above problems, the technical measures taken by the present invention include a horizontal control in which a float is provided at the lower part of the fuselage, and each swing wheel is raised and lowered in directions opposite to each other by the swing of a weight sensor that detects the lateral inclination of the fuselage. In a paddy working machine equipped with a mechanism, a bracket for supporting the float in a freely rotatable manner is provided on the upper surface of the float, and at a position below a weight sensor provided above the float, a support member provided with a pivotal support portion is provided. The lower part is connected to the bracket, and the upper part of the traction member is turned from side to side when the float tilts in the left-right direction, with the upper part of the traction member facing the lower part of the traction part formed at a right and left distance from the weight sensor. When the weight sensor is pressed in the restraint, the weight sensor is swung in the direction opposite to the tilt direction of the float to control the aircraft attitude. The one in which the features.

[Function of the invention]

Therefore, according to the present invention, when the body of the paddy field working machine is tilted, the weight sensor detects the left-right inclination of the body, and in conjunction with this, the horizontal control mechanism changes the relative height of the swing wheel to level the body attitude. Control. Then, when the float sliding on the rice field is tilted with respect to the aircraft, the restraint member rotates in conjunction with the tilt of the float, and the weight sensor swings in the opposite direction to the float. Control to be parallel to the float. Therefore, the same horizontal control mechanism can perform both horizontal control when the body is tilted and control when the float is tilted, and can smoothly perform paddy work.

〔Example〕

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Reference numeral 1 denotes a traveling machine of a walking rice transplanter exemplified as a paddy field working machine, and a machine frame 3 on which an engine 2 is mounted.
The main float 4 is provided at the lower part of the
A swing wheel 6 supported on the chain case 5 is provided. Reference numeral 7 denotes a bracket fixed to the left and right center positions on the front side of the main float 4. The main float 4 can be rolled freely by a pivot 7a in the front-rear direction. Reference numeral 8 denotes a sensing rod for sensing the vertical movement of the main float 4, and a rotating portion 8a of the sensing rod 8 is rotatably supported by an adjuster 9 that moves vertically. 10 is a plate fixed to the sensing rod 8;
A restraining member 11 is pivotally supported at a rotation fulcrum 10a provided at 10. The restraining member 11 has a sharp upper end, and a connecting pin 11a protruding from the lower end is guided through a vertically long hole 7b provided in the bracket 7.

On the other hand, the rear end of the main float 4 has a bracket 12 fixed to the center in the left and right direction supported by a pivot pin 13 in the front-rear direction, and a pin 13a in the left and right direction fixed to the pivot pin 13 is adjustable. It is supported by a hanger 14 and the rear part of the main float 4 is moved up and down by operating a lever 15 to adjust the planting depth. 16 is the body frame 3
An operation handle extends upward and rearward from the rear end of the vehicle, reference numeral 17 denotes a front-rear-back-and-height seedling mounting table, and reference numeral 18 denotes a planting rod.

The swing wheel 6 is connected to a swing shaft 19 of the chain case 5.
The rotating arm 20 protruding from the control mechanism 22
In accordance with the inclination of the traveling body 1, the swing wheels 6 are simultaneously moved up and down in the left and right directions or in opposite directions to control the attitude of the body. The control mechanism 22 is as follows. Is configured.

That is, a main valve 24 connected to an oil passage from a hydraulic pump is provided above a transmission 23 provided at a rear portion of the engine 2, and a cylinder rod 26 of a main cylinder 25 is interlocked with the main valve 24. Will extend and contract toward the rear of the aircraft. At the rear end of the cylinder rod 26, a sliding piece 27 is elastically supported via an elastic machine 28.
The central portion of a lifter 29 composed of two plate members is pivotally supported on the vertical pivot shaft 27a.

A plate 30 is integrally fixed to the rear surface of the transmission 23, and a pair of left and right guide bars 32 is provided between the plate 30 and a support bracket 31 erected on the body frame 3. A slide holder 33 is slidably supported on the slide holder 32. A cylinder rod 34a of a sub cylinder 34 is supported between the left and right mounting arms 33a of the slide holder 33, and a cylinder cylinder 34b is mounted on the mounting arm 3 by oil supply from a sub valve 35 provided on the rear surface of the engine 2.
Move left and right between the opposing sides of 3a.

On the upper surface of the slide holder 33, a pivot arm 36 is provided with a lifter 29.
An operating arm 37 is integrally formed at the center of the lifter 29 in the direction of the slide holder 33, and pivots on a pin shaft 38 provided at the base end of the operating arm 37. The extension end of the support arm 36 is pivotally supported so as to be swingable. A front and rear slot-shaped through hole is drilled at the tip of the operating arm 37, and an operating pin 39 protruding from the cylinder cylinder 34b is provided with a left-right guide 40 drilled into the slide holder 33 and the through hole. Penetrates.

The connecting rod 21 is connected to both left and right sides of the lifter 29, and when the main valve 24 operates, the cylinder rod 26
Moves the lifter 29 back and forth to swing the
Are simultaneously moved up and down, and when the sub-valve 35 is actuated, the lifter 29 is horizontally swung with the movement of the cylinder tube 34b, and the swing wheel 6 is moved up and down in opposite directions.

Reference numeral 41 denotes a gravity sensor mechanism provided at the left and right centers of the fuselage. The base end of a sensing arm 42 connected to the sub-valve 35 is pivotally connected via a pivot 43 on the fuselage side.
The weight sensor 44 has a hanging shape, and when the weight sensor 44 swings right and left, the sensing arm 42 integrally rotates to operate the sub-valve 35. The weight sensor 44 has a tapered shape that expands downward, and a restraining portion 45 composed of ridges 45a and 45a facing each other with a left and right interval is formed on the front surface of the lower end side.

The upper end of the restraint member 11 faces the restraint portion 45, and when the main float 4 is greatly inclined, the restraint member 11 which is guided and rotated by the elongated hole 7b of the bracket 7 is protruded.
The weight sensor 44 swings by contacting the weight 45a so that the attitude of the machine body can be controlled.

FIG. 4 shows another embodiment, in which a substantially center position of a plate-shaped restraint member 46 is pivotally attached to a mounting base 47 on the fuselage side via a rotation fulcrum 48. The centering between the restraining member 46 and the weight sensor 44 can be easily performed. Reference numeral 49 denotes a slot through which the connecting pin 50 is guided when the main float 4 moves up and down.

In the above-described configuration, when performing the planting operation, the swing wheel 6 travels on the cultivator, and the main float 4 slides along the field surface of the field, while the seedlings on the seedling mounting table 17 are moved by the seedling mounting rod 18. And plant it on the rice field. During the operation, when the sensing rod 8 senses the vertical movement of the machine due to the change in unevenness of the tillage, the main bubble 24 operates to extend and retract the cylinder rod 26 of the main cylinder 25, and the lifter 29 moves back and forth,
The swing wheel 6 moves up and down at the same time, and the main float 4 also moves up and down by the adjuster 9 to control the body attitude.

When the weight sensor 44 swings right and left with respect to the aircraft and detects the inclination of the aircraft, the rotated sensing arm 42 operates the sub-valve 35, and the swing wheels 6 move up and down in opposite directions to level the aircraft. Control. And main float 4
When is inclined, although the weight sensor 44 swings by restraining member 11 which rotates, for example, as shown in FIG. 3, the bracket 7 is inclined in the arrow A ₁ direction, restraining member which is guided in a long hole 7b since 11 is rotated in the arrow a ₂ direction, the weight sensor 44 is pressed by the該牽system unit 45 will always be deflected in the arrow a ₃ direction opposite to the main float 4. For this reason, the sub-valve 35 operated by the weight sensor 44 can control the body attitude so that it is parallel to the main float 4.

Therefore, without providing a particularly complicated interlocking mechanism, etc.
The same control mechanism 22 can perform horizontal control when the body is tilted and attitude control when the main float 4 is tilted, and always perform paddy work with high planting accuracy as an appropriate body attitude. be able to.

〔The invention's effect〕

In short, the present invention relates to a paddy working machine having a horizontal control mechanism for providing a float at a lower portion of a body, and lifting and lowering each swing wheel in directions opposite to each other by a swing of a weight sensor for detecting a lateral inclination of the body. A bracket for rotatably supporting the float is provided on the upper surface of the float, and at a position below the weight sensor provided above the float, a lower portion of a restraining member provided with a pivot portion is connected to the bracket, and When the upper part of the traction member faces the traction unit formed at a right and left distance to the weight sensor from below, and the upper part of the traction member that rotates when the float tilts in the left and right direction presses the weight sensor in the traction unit. In order to control the aircraft attitude by swinging the sensor and the sensor in the direction opposite to the tilt direction of the float, There when tilted to the right and left, the weight sensor detects a tilt of the aircraft, to change the relative height of the left and right swing wheels, a body posture may be horizontal control. Then, when the upper part of the restraint member that rotates when the float is tilted presses the weight sensor in the restraint part, the restraint member that rotates in conjunction with the tilt of the float causes the weight sensor to swing in the opposite direction to the float. In addition, the body attitude can be controlled in parallel with the float. Therefore, the same horizontal control mechanism can perform horizontal control when the aircraft is tilted and attitude control when the float is tilted, so that paddy work can always be performed smoothly with an appropriate aircraft attitude. is there.

[Brief description of the drawings]

Drawings show an embodiment of a horizontal control mechanism in a paddy working machine according to the present invention, FIG. 1 is an overall side view of a paddy working machine, FIG. 2 is a perspective view of a control mechanism, and FIG. FIG. 4 is a perspective view showing a main part, and FIG. 4 is a perspective view showing another embodiment. In the figure, 4 ... Main float, 6 ... Swing wheels, 7
…… Bracket, 11 …… Check member, 22 …… Control mechanism, 41
... gravity sensor mechanism, 44 ... weight sensor, 45 ... check unit.

Continuation of the front page (56) References JP-A-1-317306 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A paddy working machine provided with a float at a lower portion of a body and having a horizontal control mechanism for raising and lowering each swing wheel in a direction opposite to each other by swinging of a weight sensor for detecting a lateral inclination of the body. A bracket for supporting the float in a freely rotatable manner is provided on the upper surface, and a lower portion of a restraining member provided with a pivotal support portion is connected to the bracket at a position below a weight sensor provided above the float, and the above-described restraining member is provided. With the upper part facing downward from the restraint part formed at the left and right intervals on the weight sensor,
When the upper part of the restraint member that rotates when the float tilts in the left-right direction presses the weight sensor in the restraint part, the weight sensor is swung in a direction opposite to the tilt direction of the float to control the attitude of the aircraft. A horizontal control mechanism in a paddy working machine.