JP2006232101A - Operation part of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrict a rise in costs caused by diversification of an operation part by commonly using a case of a front operation panel, in which a steering lever is to be installed, between two kinds of machines using a hydraulic mechanism or a sensor mechanism. <P>SOLUTION: A pair of crawlers in right and left structure a travelling device 2. The travelling device 2 is structured to be turned by a steering tool 15 provided in the operation part 6 of a machine body, and the steering tool 15 is structured to perform steering by transmitting operation information to the travelling device 2 through any one of the hydraulic mechanism Y and the sensor mechanism S. The operation part 6 of the working machine is provided with a common case 16 so that any one of the hydraulic mechanism Y and the sensor mechanism S can be built in the common case 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a control unit of a work machine that steers a traveling device configured by a pair of left and right crawlers.

Conventionally, the traveling direction operation of the traveling device constituted by the crawler is performed by tilting the steering operation lever provided in the control unit of the aircraft, but the hydraulic mechanism is operated by the tilting operation of the steering operation lever, and the traveling direction is The configuration in which the above operations are performed is known (see Patent Document 1).
Conventionally, a configuration in which a traveling device configured by a crawler is operated in a traveling direction via a sensor mechanism by a steering operation lever provided in a maneuvering portion of the aircraft is known (see Patent Document 2).
JP 2004-24071 A JP 2002-362403 A

In all of the known examples, since the tilting operation of the steering operation lever is operated to operate the traveling device via either the hydraulic mechanism or the sensor mechanism, the front side operation provided with the steering operation lever is provided. There is a problem that the panel case has a dedicated structure.
That is, since various preparations must be prepared depending on the model, the cost increases.
In the present application, the case of the front operation panel on which the steering operation lever is mounted is used in common for any model adopting either the hydraulic mechanism or the sensor mechanism.

In the present invention, the traveling device 2 is configured by a pair of left and right crawlers, and the traveling device 2 is configured to be turned by a steering operation tool 15 provided in the control unit 6 of the airframe, and the steering operation tool 15 is configured. Is configured such that the operation information can be transmitted to the traveling device 2 by either the hydraulic mechanism Y or the sensor mechanism S and the steering operation can be performed, and the common case 16 provided in the steering unit 6 is provided with a hydraulic mechanism. When the hydraulic mechanism Y is provided in the case 16, the steering operation tool 15 is tilted in the left-right direction. Then, when the hydraulic pressure is changed by the relief valve 25 to start turning and the steering operation tool 15 is neutralized, the relief valve 25 stops turning and causes the traveling device to go straight.
Further, when the sensor mechanism S is provided in the case 16, when the steering operation tool 15 is tilted in the left-right direction, the potentiometer 30 detects the tilt angle of the steering operation tool 15, starts turning, and steers. When the operation tool 15 is made neutral, the relief valve 25 stops turning and causes the traveling device to go straight.
According to the present invention, the case 16 is a control unit of a work machine provided with a turning radius changing means 32 that can arbitrarily change and adjust a turning radius with respect to a tilting operation angle of the steering operation tool 15. When the radius changing means 32 is operated, the turning radius of the airframe corresponding to the tilt angle of the steering operation tool 15 is changed.

According to the first aspect of the present invention, the case 16 can be shared in any of the operation systems of the hydraulic mechanism Y or the sensor mechanism S, whereby the front operation panel 14 can be shared.
According to the second aspect of the invention, although the hydraulic mechanism Y is operated by the steering operation tool 15, the turning pressure can be adjusted, and the turning radius changing means 32 is exposed to the outer peripheral surface of the front operation panel 14. Therefore, unintentional or inadvertent operation of the turning radius changing means 32 can be avoided.

An embodiment of the present invention will be described with reference to an example of a combine. Reference numeral 1 denotes a machine frame 1, 2 a traveling device provided below the machine frame 1, 3 a threshing device provided above the machine frame 1, 4 Are a harvesting unit, 5 is a Glen tank, and 6 is a control unit provided in front of the Glen tank 5.
The control unit 6 is provided with a step 11 where the operator gets into the front side of the driver's seat 10 of the operator, one side (right side) of the step 11 is opened to form the entrance 12, and the other side part of the step 11 ( A left side operation panel 13 is provided on the left side, and a front side operation panel 14 is provided on the front side of step 11.

On one side of the front operation panel 14, a steering operation lever (power steering lever) 15 that performs an operation in the traveling direction and a lifting operation of the cutting unit 4 is provided. The steering operation tool 15 is attached to a case 16 provided on the front operation panel 14. The case 16 is formed so that either the hydraulic mechanism Y or the sensor mechanism S operated by the steering operation tool 15 can be incorporated, and either one is incorporated.
That is, the front operation panel 14 is formed in a box shape having an upper surface, a front surface, a rear surface, and a side surface, and the upper surface, the front surface, the rear surface, and the side surface are formed in a continuous surface shape, thereby creating a sense of unity and a design surface. However, the operation of either the hydraulic mechanism Y or the sensor mechanism S can be performed by configuring the case 16 so that each component can be incorporated in either the hydraulic mechanism Y or the sensor mechanism S. Even in the case of the system, the case 16 can be shared, whereby the front operation panel 14 can be shared.
Therefore, the front side operation panel 14 can be shared by traveling machines having different mechanisms and work machines of different models provided with the cutting unit 4.

  3 and 4 show the case 16 of the hydraulic mechanism Y. The steering operation tool 15 has a base attached to the first horizontal shaft 20, and the first horizontal shaft 20 is attached to the plate 21 so as to be rotatable. The plate 21 is fixed to a bracket 22, the bracket 22 is attached to a stay 23 fixed to the case 16 so as to be pivotable back and forth by a second horizontal shaft 24, and the relief valve 25 is operated on the bracket 22. The child 26 is brought into contact. The bracket 22 is rotated about the first horizontal shaft 20 or the second horizontal shaft 24 by the operation of the steering operation tool 15 to change the pressing force of the operating element 26 of the relief valve 25. Open and close the internal valve. Reference numeral 27 denotes a cutting up / down switch.

  5 and 6 show the case 16 of the sensor mechanism S. The base of the steering operation tool 15 is attached to the potentiometer 30, the potentiometer 30 is attached to the first horizontal shaft 20B, and the first horizontal shaft 20B is rotatable to the bracket 22B. The bracket 22B is attached to a stay 23B fixed to the case 16 by a second horizontal shaft 24B so as to be able to rotate back and forth. 27B is a cutting up / down switch.

7 and 8 show that the case 16 is provided with the turning radius changing means 32 capable of arbitrarily adjusting the turning pressure. In the conventional hydraulic mechanism Y type, the turning pressure cannot be adjusted. Make this possible.
Further, if the turning radius changing means 32 is exposed to the front operation panel 14, the turning radius changing means 32 may be operated unconsciously. Therefore, the operation interval of the steering operation tool 15 may be out of order and the operability may be reduced. In the present application, the turning radius changing means 32 is provided in the case 16 while the turning pressure is variable in the hydraulic mechanism Y type, thereby avoiding an inadvertent operation of the turning radius changing means 32.

Further, the pressure line L of the turning pressure adjusted by the turning radius changing means 32 is displayed on the monitor 33 provided on the front operation panel 14.
Therefore, the pressure line L of the turning pressure can be recognized visually, so that operability can be improved and erroneous operation can be prevented.
35 is a blinker display section of the monitor 33, 36 is a forward / reverse display section, 37 is a high beam display section, 38 is a low beam display section, 39 is a horn display section, 40 is an alarm lamp, and 41 is a liquid crystal display section.

Therefore, in the turning operation by the steering operation tool 15, the turning radius is changed according to the tilt angle, and the turning radius becomes smaller when the turning angle becomes steep. In this case, even if the tilt angle of the steering operation tool 15 is the same, for example, Road travel and wetland field travel are set in advance so that the turning radii are different, but even when the wetland mode is provided and the turning radius is set in this way, there is a difference in the degree of softness of the field.
Therefore, even in the case of the wet paddy field mode assuming traveling in the wet paddy field, the turning pressure by the operation of the steering operation tool 15 can be changed in three stages (FIG. 11).

That is, the wet field mode “strong” when the turning radius when the steering operation tool 15 is tilted to the maximum is small, “medium” when the turning radius is medium, and “weak” when the turning radius is large. It is configured to select from the three stages of turning force.
Therefore, it becomes easy to grasp the soft level of the wet field, and the operability is improved.
Further, it is preferable that the turning force changeover switch 45 is provided in the steering operation tool 15 because the changeover operation can be performed even while the liner is traveling, and the operability is improved.

Further, when the pressure line L of the turning pressure selected by the changeover switch 45 is displayed on the liquid crystal display unit 41 of the monitor 33, it is preferable that the operability is further improved (FIG. 12).
In the embodiment, every time the changeover switch 45 is pressed, the mode is switched between “strong”, “medium”, and “weak”.

13 to 18 show an embodiment in which a switch 51 for extending and retracting the narrow guide 50 is provided in the steering operation tool 15.
Therefore, the switch 51 can be operated without releasing the hand from the steering operation tool 15, and in particular, the narrow guide 50 can be extended and retracted during traveling on the slope when entering and leaving the field, so that the operability is greatly improved. Be made.
That is, the narrow guide 50 can be overhanged immediately before entering the field, and the cutting can be performed smoothly.

Further, by providing the steering operation tool 15, it is possible to omit a line (harness) compared to providing the switch 51 on the front operation panel 14.
15 and 16 show an example of the operating means 52 for extending and retracting the narrow guide 50. One end of the operating rod 53 is connected to the narrow guide 50, and the other end of the operating rod 53 is connected to the trapezoidal male screw 54. Install. 55 is a trapezoidal female screw, 56 to 58 are spur gears, 59 is a pinion, and 60 is a bellows.

19 to 21 show an embodiment in which the steering operation switch 15 is provided with a pulling shift switch 61 that shifts the conveying (pulling) speed of the pulling lug of the pulling device provided in the cutting unit 4.
Therefore, the pulling speed change switch 61 can be operated without removing the hand from the steering operation tool 15, and in particular, the pulling lug of the pulling device can be shifted while traveling on the slope when entering and leaving the field, thus greatly improving operability. Be made.
In addition, by jointing the ground wire in the steering operation tool 15 with another handling depth switch or the like, it is possible to omit providing the ground terminal on the main harness side individually.

Accordingly, the front operation panel 14 of FIGS. 22 to 26 is obtained by forming a space 65 around the upper portion of the front operation panel 14.
Since the space portion 65 is formed in the front operation panel 14, the forward field of view is widened. In particular, the reel can be seen well in a general-purpose combiner. In addition, the user can insert his / her hand from the space portion 65 to remove clogs and debris from the lubrication cock and the cover of the pulling device, thereby improving workability.

  Thus, the space 65 is formed above the front operation panel 14 and below the left-right bar-shaped panel 66. A part of the lower surface side of the panel part 66 is covered with a metal cover 67 such as an aluminum casting, and the upper surface side of the panel part 46 is mainly formed of a synthetic resin 68.

The side view of a combine. The top view of a control part. The front view of the case of a steering operation lever. The same side view. The front view of the case of a steering operation lever. The same side view. The front view of the Example which provided the volume switch in the case of the steering operation lever. The side view of the part which provided the volume switch. The front view of a monitor. The perspective view of a steering operation lever. Explanatory drawing which shows brake pressure and the operation amount of a steering operation lever. The front view of the other Example of a monitor. The front view of the other Example of a steering operation lever. The same side view. Sectional drawing of the action | operation mechanism of a narrow guide. The accommodation state sectional view of the operation mechanism of a narrow guide. The overhanging state top view of a narrow guide. FIG. The top view of the control part of another Example. The front view of a main gearshift lever. The same side view. The side view of the control part of another Example. The front view. The front view. The same side view. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ... Cutting part, 5 ... Glen tank, 6 ... Control part, 10 ... Driver's seat, 11 ... Step, 12 ... Entrance / exit, 14 ... Front operation panel, DESCRIPTION OF SYMBOLS 13 ... Side part operation panel, 15 ... Steering operation tool, 16 ... Case, 20 ... 1st horizontal axis, 21 ... Plate, 22 ... Bracket, 23 ... Stay, 24 ... 2nd horizontal axis, 25 ... Relief valve, 27 ... Switch, 30 ... Potentiometer, 32 ... Turning radius changing means, 33 ... Monitor, 35 ... Blinker display, 36 ... Forward / reverse display, 37 ... High beam display, 38 ... Low beam display, 39 ... Horn display, DESCRIPTION OF SYMBOLS 40 ... Alarm lamp, 41 ... Liquid crystal display part, 45 ... Changeover switch, 50 ... Narrow guide, 51 ... Switch, 52 ... Actuation means, 53 ... Actuation rod, 54 ... Trapezoid male screw, 61 ... Induction gear shift Pitch, 65 ... space, 66 ... panel, 67 ... metal cover, 68 ... synthetic resin cover.

Claims (2)

A traveling device (2) is configured by a pair of left and right crawlers, and the traveling device (2) is configured to be turned by a steering operation tool (15) provided in a control unit (6) of the airframe. The direction operation tool (15) is configured to transmit the operation information to the travel device (2) by either the hydraulic mechanism (Y) or the sensor mechanism (S) and to perform the steering operation. A control unit of a work machine configured to be built in either the hydraulic mechanism (Y) or the sensor mechanism (S) in a common case (16) provided in (6). 2. The operating unit of a working machine according to claim 1, wherein the case (16) is provided with turning radius changing means (32) capable of arbitrarily changing and adjusting a turning radius with respect to a tilting operation angle of the steering operation tool (15). .

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