JPH0674059B2 - Arrangement structure of control operation tools on agricultural tractor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an arrangement structure of a control operation tool in an agricultural tractor in which a work posture control of a working unit such as height control is performed by a microcomputer. Is.

[Problems to be Solved by Prior Art and Invention] Conventionally, among these kinds of agricultural tractors, a position control for controlling the height of a working unit provided on a traveling machine body, a working depth control, etc., by a microcomputer. There is one that is adapted to perform other control of. However, in the prior art, the height control operation unit for performing the height control adjustment is
Like the control operation unit that performs other control adjustments, it was configured with electrical parts such as snap switches and other switches, so during actual work, etc., the actual operation direction and operation amount of the height control operation unit It is inevitable that a speedy and accurate control operation will not be possible because there will inevitably be a real difference between the vertical direction of the work machine and the amount of height change, and the height control operation unit and other control operation units will not be allowed. Since they are arranged side by side, these operations are often confusing, and there is a problem in that the operability is extremely poor.

Moreover, in the conventional one, a control operation tool for performing control operation such as height control and working depth control of the working section may be provided on the upper surface of the fan pendant arranged on the driver's seat side. The operator holds the handle when the control operation is not performed, but if the positional relationship between the handle and the control operation tool is not appropriate, the operator cannot quickly and accurately move to the control operation. There is a problem. In addition, the control operation tool needs to be devised because it needs to be protected from gravel or the like flying from the outside or contact with other objects.

[Means for Solving the Problem] The present invention was conceived with the object of providing an arrangement structure of a control operation tool in an agricultural tractor capable of eliminating these drawbacks in view of the above circumstances. In the agricultural tractor configured to perform the position control for controlling the height of the working unit provided on the traveling machine body and the other control such as the control of the working depth by using the microcomputer, A position control lever for performing a setting operation and another control operation tool for performing another control setting operation are provided on the front end of the vehicle for covering the rear wheels. In addition, bring the position control lever and other control operation tools close to each other in the front-rear direction, and the position control lever becomes lower toward the front. In the slanted part, other control operation tools are respectively arranged in the fan-end horizontal parts which are substantially horizontal from the upper end of the fan-end slant part toward the rear, and further, these position control levers and other operation tools are provided. It is characterized in that it is arranged so as to be located inward of the handle attached to the fender.

With this configuration, the present invention improves the operability of the control operation tool provided on the fender and enables the control operation tool to be effectively protected from dirt and the like.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, reference numeral 1 denotes a traveling machine body of an agricultural tractor, and a rotary type tilling working section 2 is provided at the rear of the traveling machine body 1 so as to be vertically movable via a link mechanism 3. Reference numeral 4 denotes a fender portion of the traveling vehicle body 1.
In the embodiment, the left and right are integrally formed including the step portion 5, but a seat 6 is provided in the central portion sandwiched by the left and right fan portions 4. Here, 7 is a steering wheel, 8 is a rear wheel covered by the wing portion 4, and 9 is a front wheel.

A handle 26 for an operator is attached to the upper surface of the wing portion 4, and the handle 26 has an inside of the body (seat 6 side).
A concave portion 10 is integrally formed in the concave portion 10, and a control portion 11 configured by using a microcomputer is attached to the concave portion 10. That is, the left and right and the rear side of the concave portion 10 are covered by the standing wall of the fan portion 4, the bottom portion has a two-step upper and lower step shape, and the front side and the upper side are open. Then, one (right side in the embodiment) concave portion
A control unit 11 is integrally fixed to the upper surface of the upper bottom of 10 by a tightening tool 11a. Further, reference numerals 12 and 13 denote cover bodies attached to the left and right recesses 10, respectively, and the right cover body 13 among them is provided with a tilt manual switching switch 14 and a tilt switch because it is located above the control unit 11. Tilting automatic switch 1 consisting of setting device 15, plowing depth setting device 16 and push-button type switch
7. Similarly, automatic plowing depth switches 18 are provided respectively. Further, a lever 19 for position control is provided on the front side of these devices, and the base end of the position control lever 19 is a position sensor for detecting the lever position of the position control lever 19.
The lever 19 is integrally attached to the lower surface side of the cover body 13 together with the lever 29 and protrudes upward from the lever guide 19a.
Can swing back and forth within a range regulated by the upper and lower stoppers 19b. And in this way,
A position control lever 19 and various operating tools such as switches 14 to 18 are integrally attached to the cover body 13 as one kit.

Next, the tilt manual switching switch 14 and tilt setting device 1
5, the operation of the working depth setting device 16, the automatic tilting switch 17, the automatic working depth switch 18, and the position control lever 19 will be briefly described with reference to a flow chart. First, when the engine is started, the set lamp provided on the operation panel 20 displays the monitor 27.However, if the set lamp lights here, the set position of the position control lever 19 is not appropriate. Then, operate the position control lever 19 so that the set lamp is loosely positioned at an appropriate position so that the set lamp goes out. In this way, the position control is performed in the state in which the position is set to the set position, and the position control lever 19 is further operated up and down to set the position to a desired position, and this set position is detected. Set value from position sensor 29 and hydraulic lift arm 21
The detection result from the lift arm angle sensor 22 provided in the above is input to the control unit 11 for comparison judgment, and if they do not match, a control valve not shown is controlled to swing the hydraulic lift arm 21 up and down. The position of the working unit 2 is adjusted so that the working unit 2 is located at the set position, and the position of the working unit is automatically controlled in this manner.

In addition, here, when it is desired to move the working unit up and down by manual operation, the lift arm manual switch provided on the operation panel 20 is used.
The position control is released by switching 23 to the manual side, and it is possible to move up and down manually.

On the other hand, in order to activate the automatic working depth control, the position control lever 19 is moved to the lower position and the automatic working depth switch 18 is pressed (displayed on the monitor and the position control is automatically released). , The plowing depth set value set by the plowing depth setter 16 and the working unit 2
By detecting the rocking posture of the rear cover 24, a comparison is made with the detection value from the tilling depth sensor 25 that detects the tilling depth, and the control valve is controlled by the control command of the control unit 11 so that this value matches. The hydraulic lift arm 21 is moved up and down by switching, so that the automatic plowing depth control is performed. Furthermore, like when cultivating slopes,
If you want to perform automatic tilt control, use the automatic tilt switch 17
When is pressed (displayed on the monitor) and the tilt setter 15 is operated to set to a desired tilt state, this set value and the value detected by a tilt detection sensor (not shown) are compared and judged, and this value is The control unit 11 performs control so that they coincide with each other, and thereby the tilt automatic control is performed. In this way, the attitude control of the working unit 2 is performed. Incidentally, 28 is a main shift lever.

In the embodiment of the present invention configured as described above, as described above, the recessed portion 10 is formed on the upper surface of the fender portion 4 toward the inside of the body with respect to the handle 26, and is attached to the recessed portion 10. The cover body 13 is integrally provided with a position control lever 19 and various kinds of switches 14 to 18, and accordingly, the control operation tool is arranged so that the control operation tool is located inside the fuselage rather than the handle 26. It is arranged in the section 4. As a result, when operating any of these control operating tools,
By simply moving the hand holding the handle 26 slightly inward, the required operating tool can be selected and operated, which can greatly contribute to improving the operability of the control operating tool.

Moreover, since the control operation tool has a structure protected by the handle 26 arranged outside, the control operation tool is controlled when the operation tool touches another object or the gravel flies from the outside. It is possible to effectively avoid troubles such as collision with the operation tool or damage.

In addition, the height adjustment of the working unit 2 by the position control is performed by operating the position control lever 19, and accordingly, the height is controlled by the microcomputer. However, the height adjustment is performed by the lever operation method that has been adopted in the conventional mechanical one, and the working unit 2 is adjusted according to the field conditions.
It will be possible to control the height. For this reason, the height adjustment becomes natural, work such as headland traveling is easy, and operability can be significantly improved. Moreover, since it is a lever operation system, the operation range of the position control lever 19 can be adjusted by sliding the set position of the stopper 19b, which is suitable for the field conditions. In addition to being able to perform work at will, the position control lever 19 can be operated to control the vertical movement of the working unit 2 and set the height position, thereby improving operability.

In addition, as described above, control such as position control, automatic plowing depth control, automatic tilt control, etc., is optionally performed by switching the switches, but those controls are performed using a micro computer. Configured control unit 11
It is made by In this case, in the embodiment of the present invention, the height adjustment of the working portion 2 by the position control is performed by operating the lever of the position control lever 19, and accordingly, by the microcomputer. Although the height control is performed, the height adjustment is performed by the lever operation method used in the conventional mechanical one, and the height of the working unit 2 can be controlled according to the field conditions. become.

Moreover, the position control lever 19 is, in the cover body slanting portion 13a located in the fander slanting portion 4a, the lever operation directed to the lower front and the upper rear can be made to coincide with the lifting operation of the working unit. The work unit can be moved up and down with an operational feeling that matches the actual work situation. Then, close to the position control lever 19, the switches 14 to 18 for performing other control settings such as plowing depth control are centrally arranged on the rear cover body horizontal portion 13b. By moving the hand holding the control lever 19 to the rear, the setting operation of other control operation tools can be easily performed, and as a result, the operator does not have to look at the lever and operation tool one by one. It is possible to switch to a lever or an operation tool by moving, and it is possible to improve the operability of the work unit control including the position control lever 19 extremely.

In addition, since it is a lever operation system, the operating range of the position control lever 19 is adjusted by sliding the set position of the stopper 19b, which makes it suitable for field conditions. The above work can be performed at any time, and the vertical movement of the working unit 2 can be controlled and the height position can be set by operating the position control lever 19 to improve the operability.

[Effects] In summary, since the present invention is configured as described above, the position control lever that controls the raising and lowering of the working portion is the front end lower portion and the rear upper portion of the lever tilting portion. Therefore, it is possible to match the operation of raising and lowering the working unit, and it is possible to raise and lower the working unit with an operation feeling that is directly adapted to the actual working condition. Moreover, in the vicinity of the position control lever, a control operation tool for performing other control settings such as the working depth control is arranged in the rearward horizontal portion of the fan, so that the hand holding the position control lever is moved backward. By moving the control lever to the other side, the setting operation of other control operation tools can be easily performed, and as a result, the operator can hold the lever or operation tool by an intuitive hand movement without looking at the lever or operation tool. Therefore, the operability of the control of the working unit including the position control lever can be made extremely good.

Moreover, since the operating part control operation tools including these position control levers are located inward of the grips attached to the upper surface of the fender, when operating any of these control operation tools, the grips are grasped. Only by moving the holding hand slightly inward with the grip as a reference, a necessary operation tool can be selected and operated, which can greatly contribute to improvement of operability.

In addition, these control operation tools are protected from contact with external objects by the grips arranged on the outside, and are effectively protected even if gravel or the like flies from the outside. This is convenient because it is possible to effectively prevent troubles such as earth and sand colliding with the control operation tool and damaging it.

[Brief description of drawings]

The drawings show an embodiment of the arrangement structure of the control operation tool in the agricultural tractor according to the present invention, wherein FIG. 1 is an overall side view of the agricultural tractor, FIG. 2 is an overall plan view of the same, and FIG. Is a rear view of the main part, FIG. 4 is a cross-sectional view of the main part side, FIG. 5 is an enlarged plan view of the main part of the fan part, and FIG. 6 is a vertical sectional view of the same.
FIG. 7 is a perspective rear view of the driver's seat part, FIG. 8 is a side view of the working part, FIG. 9 is a plan view of relevant parts of the same, and FIG. 10 is a flow chart. In the figure, 1 is a traveling machine body, 2 is a working unit, 4 is a fan unit,
4a is a sloping portion of the pendant, 4b is a horizontal portion of the pendant, 6 is a seat, 11 is a control unit, 14 to 18 are switches, 19 is a position control lever, and 26 is a handle.

Claims (1)

[Claims] 1. An agricultural tractor configured to perform a position control for controlling a height of a working unit provided on a traveling machine body and another control such as a plowing depth control by using a microcomputer. A position control lever for performing control height setting operation and another control operation tool for performing other control setting operation are arranged on the driver's side of the traveling body to cover the rear wheels. In order to install it on the fan, the position control lever and other control operation tools should be close to each other in the front-rear direction, and the position control lever should be on the front end of the front end of the front end of the fan control part. From the rear to the rear in a generally horizontal horizontal direction, and further position these position control levers and The operation device, the arrangement structure of the control operating member in the agricultural tractor, characterized in that it is arranged so as to be located inward of the handle attached to Fuenda.