JPH037684A - Arranging structure of control operating tool of agricultural tractor - Google Patents

Abstract

PURPOSE:To enhance the operating easiness by performing different items of control such as height control for the working part and caltivation depth control by the use of control operating tools, and arranging them on the oversurface of a fender for rear wheels in its position a little innermore than a grip fitted to the fender. CONSTITUTION:A grip 26 is installed upright on the oversurface of a fender 4 for rear wheels 8, and a recess 10 is provided innermore in the machine body than this grip 26, and a covering 13 therefore is rigidly fitted with a position control lever 19 to perform rise/fall operation of the working part 2, an inclination manual changeover switch 14, an inclination setting device 15, a caltivation depth setting device 16, an inclination auto-switch 17, and a caltivation depth auto-switch 18. This enables selective actuation of requisite operating tools only through a minor motion inwards of operator's hand in holding the grip 26. This enhances the operating easiness of control operating tools and avoids them from breakage, etc., because of interference with any other object.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an arrangement structure of control operating tools in an agricultural camel in which the working posture of the working part, such as height control, is controlled by a microcomputer. .

[Prior art and problems to be solved by the invention] Conventionally,
Some Type 20 agricultural tractors are equipped with a control tool on the top surface of the fender placed on the side of the driver's seat for controlling the height of one working section, controlling the plowing depth, etc. By the way, when the worker is not performing control operations, he/she is grasping the handle, etc., but if the arrangement relationship between the handle and the control operating tool is not appropriate, it will not be possible to quickly and accurately shift to control operation. There's a problem. Moreover, the control operating tool requires consideration to protect it from flying sand and gravel from the outside and from coming into contact with other objects, so it requires some ingenuity.

[Means for Solving the Problems] The present invention was devised in view of the actual circumstances as described in section 2 with the aim of providing a structure for arranging control operating tools in an agricultural tractor that can eliminate these drawbacks. In an agricultural tractor in which a rear wheel fender is arranged on the side of the driver's seat of the traveling body, on the upper surface of the fender,
When installing a control tool for performing various control operations such as height control and plowing depth control of the working part installed on the traveling machine, the control tool should be placed inward from the handle attached to the fender. It is characterized by being arranged so that it is located at.

According to the present invention, with this configuration, the operability of the control operating tool provided on the tooling operator is improved, and the control operating tool can be effectively protected from earth and sand.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 2 denotes a running body of an agricultural tractor, and behind the running body 1, a rotary tilling work section 2 is provided via a link mechanism 3 so as to be vertically movable. 4 is a part of the fender of the traveling aircraft 1, and the fender part 4
In the embodiment, the left and right parts including the step part 5 are integrally molded, but a seat 6 is provided in the center part sandwiched between the left and right fender parts 4. Here, 7 is a steering wheel, 8 is a rear wheel covered by the fender part 4, and 9 is a front wheel.

A handle 26 for use by the operator is attached to the upper surface of the fender part 4.
A recess 10 is integrally formed on the side).
Control unit 1 configured using a microcomputer in 0
1 is installed. That is, the recess 10 is covered on the left, right, and rear sides by the standing walls of the fender part 4, and has a stepped bottom portion with two upper and lower steps, and is open on the front and upper sides. A control section 11 is mounted on the upper bottom surface of one (right side in the embodiment) of the recess 10 as a tightening tool 11. It is integrally fixed by a. Also, 12
．． Reference numeral 13 designates integrated covers that are attached to the left and right recesses 10, respectively. Among these, the right cover integrated 13 includes a manual tilt changeover switch 14, a tilt setting device 15. A plowing depth setting device 16, an automatic tilt switch 17 consisting of a push button type switch, and an automatic plowing depth switch 18 are provided, respectively. Furthermore, a lever 19 for position control is provided on the front side of these devices, and a position sensor 29 is installed at the base end of the position controller 1-roll lever 19 to detect the lever position of the position control lever 19.
The lever 19 is integrally attached to the lower surface side of the cover unit 13, and the lever 19 protrudes upward from the lever 9a so that it can swing back and forth within the range regulated by the upper and lower ribs 19b. It has become. In this manner, the position control lever 19 and various operating tools such as the switches 14 to 18 are integrally attached to the cover unit 13 as one kit.

Next, the operations of the manual slope changeover switch 14, slope setting device 15, tilling depth setting device 16, automatic slope switch 17, automatic tilling depth switch 18, and position control lever 19 are easily performed using flow chart 1. explain. First, when the engine is started, the set lamp provided on the control panel 20 will display on the monitor 27, but if the Sera l-lamp lights up at this time, the position of the position control lever 19 is set to Sera 1~. It is not appropriate, so the position control lever 19 is operated to slowly position the CERA I lamp to an appropriate position so that it goes out. In this way, position control is performed in the state where the camera is positioned at the position, and the position control lever 19
When set to a desired position by operating up and down, the set value from the position sensor 29 that detects this set position and the detection result from the lift arm angle sensor 22 provided on the bending force lift arm 21 are used for the control. Part 11
If they do not match, a control valve (not shown) is controlled to swing the hydraulic lift arm 21 up and down to adjust the position of the working part 2 so that it is at the set position. In this way, the position of the working part is automatically controlled. Here, if you want to manually move the working part up and down, switch the lift I arm manual switch 23 provided on the control panel 20 to the manual side to cancel the position control and move the work unit up and down manually. is now possible. On the other hand, if you want to use automatic tillage depth control, position controller 1-
If you operate the roll lever 19 to the lower position and press the automatic tillage depth switch 18 (the monitor will display and
position controller 1 - roll is automatically released), tilling depth set value set by plowing depth setting device] 6, and working part 2.
By detecting the rocking posture of the rear cover 24, the plowing depth is compared with the detected value from the plowing depth sensor 25, and the control valve is switched by the control command from the control unit 11 so that the values match. Hydraulic lift arm 2
1 moves up and down, thereby automatically controlling the plowing depth. Furthermore, if you want to perform automatic slope control, such as when cultivating sloped land, press the automatic slope switch 17 (displayed on the monitor) and operate the slope setting device 15 to set the desired slope state. Then, this set value is compared and determined with a value detected by a tilt detection sensor (not shown), and control is performed by the control unit 11 so that these values match, thereby performing automatic tilt control. In this way, the posture of the working unit 2 is controlled. Note that 28 is a main shift lever.

In the embodiment of the present invention constructed as described above, as described above, a recess 1o is formed in the upper surface of the fender part 4 on the inside of the fuselage body than the handle 26;
The cover unit 13 attached to the position controller 1
- Roll lever 19 and various switches 14 to 18
Therefore, the control operating tool is disposed on the fender part 4 so as to be located further inside the fuselage than the handle 26. As a result, when operating any of these control tools, by simply moving the hand gripping the handle 26 slightly inward, the user can select and operate the necessary control tool. This can greatly contribute to improving the operability of the control tool.

Moreover, since the control operating tool is structured to be protected by the handle 26 disposed on the outside, the control operating tool can be protected from damage if it comes into contact with another object or if sand and gravel are thrown from outside. It is possible to effectively avoid problems such as damage caused by collision with other objects.

Moreover, the height adjustment of the working part 2 by position control is performed by lever operation of the position control lever 19. Therefore, although the height control is performed by a microcomputer, the height adjustment is difficult. This is performed using the one-flange operation method employed in conventional mechanical systems, and the height of the working part 2 can be controlled according to the field conditions. Therefore, the height of the three-circle section becomes natural, and operations such as moving around the headland become easier, resulting in a significant improvement in operability. Moreover, since it is a lever operation method, the operation range of the position control lever 19 is adjusted by slidingly adjusting the set position of the stopper 19b.
Therefore, it is possible to perform work according to the field conditions at will, and by operating the position control lever 19, the vertical movement of the working part 2 can be controlled and the height position can be set, improving operability. be able to.

Moreover, behind the position control lever 19,
Since the switches for performing other control operations are centrally provided, the control of the working part 2 can be concentrated at a position close to the position fan 1 and the roll lever 19. It is possible to perform quick and accurate control.

[Operations and Effects] In summary, since the present invention is configured as described above, the control operating tool for the working part is provided on the upper surface of the fender on the side of the seat. It is located further inward than the handle attached to the top surface, and as a result, when operating any of these control devices, the hand holding the handle must move slightly inward relative to the handle. You can select and operate the necessary operating tools by simply clicking the button, which can greatly contribute to improving operability.

Furthermore, the control operating tool is structured to be protected by a handle placed on the outside, which protects it from coming into contact with other objects, and also protects the control operating tool from coming into contact with objects such as sand and gravel. This is advantageous in that it is possible to effectively protect the control operating tool from damage caused by collision with dirt, sand, etc.

[Brief explanation of drawings]

The drawings show one embodiment of the arrangement structure of the control operation tools in the agricultural tractor according to the present invention, in which FIG. 1 is an overall side view of the agricultural tractor, FIG. 2 is an overall plan view of the same, and FIG.
Fig. 3 is a rear view of the main part, Fig. 4 is a side sectional view of the main part, Fig. 5 is an enlarged plan view of the main part of a part of the fender, Fig. 6 is a longitudinal sectional view of the same as above, and Fig. 7 is a view of the driver's seat section. FIG. 8 is a side view of the working section, FIG. 9 is a plan view of the same essential parts, and FIG. 10 is a note diagram of the flowchart. In the figure, 1 is the traveling body, 2 is the working part, 4 is a part of the fender,
6 is a seat, 11 is a control unit, 14 to 18 are switches, 1
9 is a position control lever, and 26 is a handle.

Claims (1)

[Claims] In an agricultural tractor in which a fender for the rear wheels is arranged on the side of the driver's seat of the traveling body, the upper surface of the fender is used to perform various control operations such as height control and plowing depth control of a working section provided on the traveling body. 1. An arrangement structure for a control operation tool in an agricultural tractor, characterized in that the control operation tool is arranged so as to be located inward from a handle attached to a fender.