JPH03253479A - Side panel in agricultural tractor - Google Patents

Abstract

PURPOSE:To operate a switch with a natural sense of operation and lift and lower a working portion without mistakes in operation by disposing a lift control switch to an inclined portion which is gradually lowered to the front side from a rib portion provided in the middle portion of a side panel in the longitudinal direction of the panel. CONSTITUTION:A lift control switch 20 is located inside a longitudinal rib 6e forming the outer frame of a side panel 6 and is disposed on an inclined face 6f so formed as to gradually lower from a cross rib 6a to the front side, and a working portion is lifted by pulling of the switch to the upper side of the inclination and is lowered by the pushing down of the switch to the lower side of the inclination. As a result, disturbance will not occur in switch operation as it does when the lift control switch 20 is provided protrusively on a conventional horizontal plate and operated in the horizontal direction which is not related to lifting of the working portion, and switch operation is possible with a natural sense of operation corresponding to the direction of operation of the working machine and the working portion can be lifted and lowered without mistakes in operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a side panel for an agricultural tractor.

[Prior art and problems to be solved by the invention] Generally,
- Some agricultural tractors are equipped with a posture control tool for controlling the posture of the working part on a side panel located outside the driver's seat. As such a posture control tool, there is a lift control lever (position lever) that is used to set the height of the working part to the required height and to set the working state to an automatic state such as automatic plowing depth control. In addition to the lift control lever, attempts have been made to provide a lift control switch that allows the work unit to be raised and lowered with priority over automatic control when the lift control lever is set to the automatic work position. However, in the past, this lift control switch was provided so as to protrude above the substantially horizontal surface of the side panel, so the worker's hand could accidentally come into contact with it and turn the switch on.
This is not a case of unreliable fraud due to the habit of causing a problem of switching the state, but also a case where the switch operation is in the front/rear direction or left/right direction, and there is no relationship between these switch operation directions and the lifting/lowering direction of the working part. Therefore, there was a problem that it was easy to erroneously operate the switch, which caused confusion in the operation of the switch.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a side panel for an agricultural tractor that can eliminate these drawbacks. In an agricultural tractor in which a lift control lever and a lift control switch for raising and lowering a working part are attached to a side panel disposed on one side, a rib part is provided at a longitudinally intermediate part of the side panel, and the rib part The present invention is characterized in that a sloped portion is formed that gradually becomes lower toward the front, and the elevation control switch is disposed on this sloped portion.

With this configuration, the present invention reliably eliminates malfunctions of the elevation control switch.

[Example] Next, in drawing 0, which describes an embodiment of the present invention based on the drawings, l is a traveling body of an agricultural tractor, and one side of the driver's seat 2 in the traveling body l (example The side panel 6 in which the present invention is implemented is mounted on the fender 3 disposed on the right side) together with the lever guide 5 and the panel assembly 4.
It is assembled as. In other words, the fender 3 is curved forward and downward from the horizontal upper surface part 3a in an arc shape, with the lower part being vertical and covering the rear wheel, but the curved part on the side of the driver's seat is shaped like a groove. There is a step, and a panel mounting section 3b is formed here.

On the other hand, in the front part of the lever guide 5 constituting the panel assembly 4, there is provided an approximately H-shaped lever guide 5a of the power take-off gear shift lever 7, and in the rear part there is an opening for attaching the side panel 6. 5b has been opened.

The upper surface of the side panel 6 is divided into front and rear sections by a horizontal rib 6a projecting from the center in the front-rear direction and extending in the left-right direction. The rear half of the horizontal rib 6a is lowered in a step-like manner, and a setting device mounting portion 6b is formed to which setting devices such as various changeover switches and setting devices are attached. In other words, the setting devices are installed in the front half of part 6b, and the tilling depth setting device 7 for setting the tilling depth is on the left side, and the automatic control state is turned off (
Automatic control changeover switches 8 for switching to automatic tilting, automatic plowing depth, automatic plowing depth, and automatic tilting states are arranged on the right side. In addition, in the center of the setting device mounting section 6b in the longitudinal direction, there is a mode changeover switch 9 on the left side for switching the control mode to rotary work machine mode, harrow work machine mode, other work machine modes, and check mode. A tilt setting device 10 for setting the horizontal tilt state of the working machine is disposed at the center, and a raising regulation setting device 11 for regulating the ascending position of the working machine is disposed on the right side.

On the other hand, setting devices are attached to the rear half of section 6b, including switches 12, 13 for plowing depth sensitivity and slope sensitivity, and shallow/shallow switch 14 for manual plowing depth. Lift arm manual up/down changeover switches 15 are arranged from the left side.

A cover is attached to the setting device mounting section 6b to cover these setting devices, but in this case, the setting devices that are less frequently adjusted are concentrated in the center and rear parts, and These setting devices are placed under the first cover 16.
It is configured to be covered with This first cover 16 has a substantially opening shape, and locking claws 16a formed on both the front and rear legs of the first cover 16 are removably inserted into and locking into locking claw holes 6c formed in the side panel 6. It is ready to be installed. On the other hand, 17 is a second cover, and the second cover 17 covers, together with the first cover 16, setting devices that are frequently adjusted and are concentrated in the front half. - The side edge is pivotally attached to the side panel 6 by a support shaft 17a so as to be able to swing open and close, and the locking claw 17b formed on the inner side edge is removably inserted into the locking claw hole 6d formed in the side panel 6. By stopping it, it can be installed so that it can be opened and closed freely. Incidentally, in the embodiment, the first cover 16 is colored so that it is almost impossible to see through, so that it is restricted to see through the inside, but the second cover 17 is in a state where it can be seen through, so that the inside can be seen clearly. When the first cover 16 and the second cover 17 are closed,
It is configured so that only the setting devices that are frequently adjusted are centrally located in the front half and can be viewed visually, eliminating clutter by minimizing the types of setting devices that can be seen with the cover on. There is.

It goes without saying that a material that cannot see through both the first and second covers 16, 17, or, conversely, may be used if necessary. Furthermore, by changing the coloring of these covers 16 and 17, it is possible to make the user aware of the type of cover.

On the other hand, in the front half of the side panel 6 beyond the horizontal rib 6a, a front and rear rib 6e is formed so that the outer side (left side) continues forward from the horizontal rib 6a and protrudes in the front-rear direction until it reaches approximately the front edge of the panel. However, this front and rear rib 6
An inclined surface 6f is formed on the inside (right side) of the horizontal rib 6a and gradually lowers from the front edge of the horizontal rib 6a to the front side. A lever guide 6h is formed, and an elevation control lever (position lever) 18 is provided through the lever guide 6h. This lift control lever 1
The base end of the lever 8 is supported by a detector 19 for detecting the lever angle, and the detector 19 is integrally attached to the bottom surface of the side panel 6 via a bolt 19a.

Reference numeral 20 denotes a lift control switch, and when the switch is operated in a state where the tillage depth is automatically controlled, the lift control switch 20 gives priority to the tillage depth automatic control and is used to raise and lower the working machine (for example, the machine rotates). This lift control switch 20 is set so that it can be raised and lowered for work, lowered to resume work, raised and lowered to any desired height according to the necessity of work, etc. It is attached to the inclined surface 6f. In other words, the lift control switch 20 is in neutral (
A bidirectional automatic return switch that automatically returns to the OFF) position is used in the embodiment, and is configured so that the switch can be operated by tilting forward or backward, and if the switch is operated forward or downward, the switch will not work. A command to lower the machine is output, and a command to raise the work machine is output when the switch is operated rearward and upward, but when the lift control switch 20 is in the neutral position and the upper end of the operation knob 20a is The upper edge position of the front and rear ribs 6e is set to be approximately the same or slightly lower, and the outer side is the front and rear ribs 6e.
It is surrounded by a horizontal rib 6a at the rear and a lever guide 6h at the front, so that it does not protrude upward.

Reference numeral 21 denotes a board for incorporating a control unit configured using a microcomputer, and the board 21 is housed in a control box 22 that is integrally attached to the bottom surface of the side panel 6. In other words, the control box 22 has an opening at the top of the setting device mounting section 6b and a section corresponding to the elevation control switch 20, and a lower edge of the bottom cylindrical section 61 which is cylindrically protruded from the bottom of the side panel 6. The lead wires 25 from the setting devices and the elevation control switch 20 are wired so as to be drawn into the box.
The control box 22 is attached by bolting the brackets 22a and 22b protruding from the front and rear side plates to the side panel 6, and the bottom cover 23 is attached to the fully open lower surface of the control box 22 with screws. It is configured so that it can be attached integrally. The board 21 is integrally attached to the upper surface of the bottom plate 23, and the board 24 with the connector 24a attached is fixed between the locking parts 23a and 22a formed on the bottom plate 23 and the control box 22. It has become. Note that the front plate of the control box 22 is cut out with a pull-out groove 22c for pulling out the lead wire 25.

In the embodiment of the present invention configured as described above, when the control mode is set to rotary working machine mode and the automatic control changeover switch 8 is set to the automatic plowing depth (or automatic plowing depth, tilting) position, the elevator control lever 18 is turned on. Automatic position II
(By setting the load to the lowest position, work will be performed under the automatic tillage depth control state, but when one machine is to be rotated in such an automatic tillage depth control state, the lift control switch 20 should be set to the upward side. If operated, the working machine will rise without having to operate the elevation control lever 18 to the elevated position one by one.

In this way, by operating the lift control switch 20,
The work machine is raised or lowered with priority given to the lever position of the lift control lever 18, but this lift control switch 20 is located inside the front and rear ribs 6e forming the outer frame of the side panel 6 and is moved from the horizontal ribs 6a. The front side is arranged at 6F on a slope formed so that it is at a low level, and when the switch is moved upwards on the slope, the working section rises, and when the switch is pushed down toward the downwards slope, the working section is raised. As a result, the switch operation becomes confusing, unlike the conventional case where the lift control switch 20 is provided protruding from a horizontal plate and the switch is operated in a horizontal direction unrelated to the lifting and lowering operation of the working part. The switch can be operated with a very natural operation feeling that corresponds to the lifting direction of the work equipment, and the work unit can be raised and lowered without any erroneous operation. Moreover, the lift control switch 20 has ribs 6a on the rear and outer sides,
6e, and the front is arranged in a recess surrounded on three sides by the lever guide 6h, so it is possible to reliably avoid accidental touching of the switch and prevent careless switch switching operations. That will happen.

Incidentally, this panel assembly 4 uses a side panel 6 and a lever guide 5 that are integrated into one, but this is done by incorporating the setting devices and control box into the side panel 6. Make it a side panel assembly, incorporate it into the lever guide 5, and change the panel assembly 4 to 11! Therefore, during maintenance or the like, it is convenient that only the side panel assembly can be removed while the lever guide 5 remains attached to the fender 3.

When assembling a traveling aircraft that does not perform automatic control using a microcomputer as described above, a dedicated lever guide 26 (the external shape is the same as the lever guide 5) prepared in advance as shown in FIG. shape), and for panel installation, pass the lever arm through part 3b. When assembling the traveling aircraft, the fender 3 remains common, and the panel assembly 4 described above can be installed or the lever guide 26 can be installed. It has the advantage of being able to handle any type of product by selecting one, and is convenient because it can be used as a response to high-mix, low-volume production.

[Operations and Effects J] In short, the present invention is constructed as described above, and is arranged in an inclined part that gradually becomes lower toward the front from a rib part provided in the middle part of the side panel in the front-rear direction. Lift control switch.

It can be set so that the working part will rise when the switch is moved upwards, and the working part will be lowered by pushing the switch downwards.

As a result, the switch operation becomes confusing, as when the lift control switch is protruded from a conventional horizontal plate, the switch must be operated in a horizontal direction that is not related to the lifting and lowering operation of the working part. This makes it possible to operate the switch with a very natural operation feeling that corresponds to the lifting direction of the work equipment, allowing the work unit to be raised and lowered without any erroneous operation.

Moreover, since the lift control switch is arranged on an inclined part that gradually becomes lower from the rib part toward the front, it is possible to effectively suppress the protrusion of the switch from the top surface of the side panel.
This also prevents the operator from inadvertently touching the lift control switch with his/her hand and causing it to malfunction.

[Brief explanation of drawings]

The drawings show an embodiment of the side panel of an agricultural tractor according to the present invention, in which Fig. 1 is a plan view of the agricultural tractor, Fig. 2 is a plan view of the panel assembly, and Fig. 3 is a plan view of the panel assembly. 4 is a perspective view of a part of the panel assembly, FIG. 5 is an inner side view of the fender, FIG. 6 is a plan view of the fender darts, and FIG. 7 is a front view of the fender.
Fig. 8 is a plan view of the lever guide, Fig. 9 is a side view of the lever guide, Fig. 10 is a plan view of the side panel, Fig. 11 is an inside view of the side panel, and Fig. 12 is a front view of the side panel. , FIG. 13 is an outer side view of the side panel, FIG. 14 is a cross-sectional view of the lever guide portion of the side panel, and FIG. 15 is a cross-sectional view of a portion of the second cover. Figures 16 and 17 are front and side views of the first cover, Figure 18 is a plan view of the control box, Figure 19 is a partially cutaway side view of the control box, and Figure 20 is the front of the control box. Figure 21 is a rear view of the control box, Figure 22 is a sectional view of the control box, Figure 23 is a plan view of the bottom cover, Figure 24 is a side view of the bottom cover, and Figure 25 is a front view of the bottom cover. Figure, Figure 26A
, B are a plan view and a side view showing another lever guide. In the figure, 1 is a traveling aircraft body, 3 is a fender, 16 is a side panel, 6a is a horizontal rib, 6e is a front and rear rib, 6f is an inclined surface, 1
8 is an elevation control lever, and 20 is an elevation control switch. Figure 24 23a

Claims (1)

[Claims] In an agricultural tractor in which a lift control lever and a lift control switch for raising and lowering a working part are attached to a side panel disposed on the outside of the driver's seat, a rib portion is provided in the middle part of the side panel in the longitudinal direction, What is claimed is: 1. A side panel for an agricultural tractor, characterized in that a sloped portion is formed that gradually becomes lower toward the front from the rib portion, and the elevation control switch is disposed on the sloped portion.