JP5736144B2 - Driving operation device in tractor - Google Patents

Description

The present invention relates to an operation apparatus for operating the operation fraud and mitigating risk this tractor.

  In general, in a traveling working machine such as a tractor, as is well known in the art, the engine speed can be set to a desired value such as the speed at the maximum output by operating an accelerator operating tool such as an accelerator lever. The rotational speed is set, and in this state, a desired traveling speed suitable for various operations is obtained by a speed change operation using a speed change operation tool such as a speed change lever.

  In this case, in Patent Documents 1 and 2 as prior arts, in a traveling working machine such as a tractor, the shift operation tool is operated to the maximum operation position with respect to a shift operation tool such as a shift lever for shifting the travel transmission mechanism. It is described that setting means for adjusting and setting the traveling speed at the time is provided.

JP 2003-127692 A JP 2007-230518 A

  However, the setting means in the configuration of this prior art is adjustment / setting of the traveling speed when the transmission operating tool is operated to the maximum operation position, and is not set by adjusting the engine speed to a desired speed. From the above, when the engine is used at a lower rotational speed than the maximum output rotational speed at which the maximum output can be obtained, the accelerator operating tool is set in the accelerator operating tool in order to reduce the rotational speed. Since the operation must be performed at an intermediate position before the maximum operation position, there is a problem that it is difficult to determine the setting of the engine speed.

  This invention makes it a technical subject to eliminate this problem.

In order to achieve this technical problem, claim 1 provides:
“On the driving operation column (12 ) of the tractor (1) provided with the work equipment (7), a shift lever (13) for shifting the travel transmission mechanism (6) of the tractor (1), and the tractor (1 ) An accelerator lever (14) for adjusting the rotational speed of the engine (5) mounted on the control unit, and setting means for adjusting and setting the upper limit engine rotational speed when the accelerator lever (14) is operated to the maximum operating position. 16) and in Bei obtain driving operation device,
The upper limit engine speed when the accelerator lever (14) is operated to the maximum operating position is set by the setting means (16) , or the upper limit traveling when the shift lever (13) is operated to the maximum speed position. A selection switch (17) for selecting whether the speed is set by the setting means (16);
Wherein the accelerator lever (14) and said shift lever (13) and said setting means (16), before on Kiun rolling operation column (12), wherein the accelerator lever (14) and said shift lever (13), but Arranged side by side and arranged so that the setting means (16) is adjacent to the rear of the levers (13), (14),
Said selection switch (17), wherein the accelerator lever of the driving operation column (12) (14), be located in the vicinity of the shift lever (13) and said setting means (16), the accelerator lever ( 14) is operated before Symbol setting means (16) on the side to set the engine speed upper limit, the shift lever (13) said setting means and for operating (16) on the side set the running speed of the upper the Teisu so that constitutes the accelerator lever (14) side and the shift lever (13) selectable operation and side of the seesaw switch or a lever switch, "
It is characterized by that.

According to the first aspect, by operating the accelerator lever to the maximum operation position, the engine speed can be set to a desired engine speed adjusted and set by the operator in advance by the setting means.

  As a result, the desired engine speed can be quickly and accurately determined, and the engine speed can be ascertained extremely easily, so that the operability of the traveling work machine can be greatly improved.

Next, when the selector switch is operated to adjust / set the upper limit engine speed when the accelerator lever is operated to the maximum operating position, and when the shift lever is operated to the maximum speed position . Since the upper limit traveling speed can be selected and adjusted by the setting means, the setting means need not be provided separately for both the accelerator lever and the shift lever, and can be shared by both. Therefore, the number of parts can be reduced and the cost can be reduced.

In addition, the above-mentioned selection can be made accurately with fewer mistakes by operating the selector switch to the accelerator lever side and the selector switch to the speed change lever side, and the selection can be easily grasped. Higher operability can be obtained.

  Furthermore, according to the present invention, a plurality of combination modes can be stopped by operating the mode changeover switch, for example, a work travel mode in which the vehicle travels straight while performing work by various work devices, or the work by work devices in a headland is stopped. Since it is very easy to switch to the turning mode in which the vehicle turns, the workability can be improved.

  In addition, according to the present invention, for example, the work equipment is moved from the work traveling mode in which the work equipment is lowered to the turning traveling mode in which the work equipment is raised, or the work equipment is lowered from the turning traveling mode in which the work equipment is raised. It is possible to quickly and efficiently shift to the work travel mode by operating the one-touch lift switch on the work device.

It is a side view of a tractor. It is a perspective view which shows the driving | operation operation column in a tractor. It is a control block diagram.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 shows a tractor 1.

  The tractor 1 includes a traveling machine body 4 supported by the left and right rear wheels 3 as well as the left and right front wheels 2. The traveling machine body 4 is equipped with an engine 5 and a traveling transmission mechanism 6. In addition, various working devices 7 such as a rotary tiller are mounted so as to be moved up and down by a lifting mechanism 8.

  Further, a driving cabin 9 is provided on the upper surface of the traveling machine body 4, and a driving seat 10, a steering handle 11, and a driving operation column 12 are provided in the driving cabin 9.

  As shown in FIG. 2, a shift lever (shift operation tool) 13 for the travel transmission mechanism 6 and an accelerator lever (accelerator operation tool) 14 for the engine 5 are arranged in the driving operation column 12 in the horizontal direction. The speed change lever 13 and the accelerator lever 14 are both provided to rotate in the front-rear direction of the tractor 1.

  Further, a one-touch lift switch 20 (see FIG. 3) for moving the work device 7 up and down is provided at an appropriate location such as the driving operation column 12 in the traveling machine body 4.

  A controller 15 mounted on the traveling machine body 4 receives the operation signal of the shift lever 13 as an input and shifts the travel transmission mechanism 6, and also receives the operation signal of the accelerator lever 14 as an input. The speed change operation is performed.

  In other words, the controller 15 increases the traveling speed when the shift lever 13 is rotated backward as indicated by an arrow A1 in FIG. 2, and is rotated forward as indicated by an arrow A2. This is a configuration in which the traveling speed is slowed down.

  The controller 15 increases the engine speed when the accelerator lever 14 is rotated backward as indicated by an arrow B1 in FIG. 2, and is rotated forward as indicated by an arrow B2. When the engine speed is reduced, the engine speed is reduced.

  More specifically, when the shift lever 13 is rotated to the maximum maximum operation position in the rearward direction as shown by an arrow A1, the upper limit traveling speed is achieved, while the accelerator lever 14 is As shown by the arrow B1, the engine 5 is configured so that the rotational speed of the engine 5 becomes the upper limit engine rotational speed at which the maximum output can be obtained when the rotational operation is performed to the maximum operating position in the backward direction. Has been.

  In addition, as shown in FIG. 2, a setting dial (setting means) 16 and a seesaw switch or a rear part of the driving operation column 12 are disposed at the rear part of the shift lever 13 and the accelerator lever 14 and adjacent thereto. A selection switch 17 configured as a lever switch is provided.

  Further, the controller 15 receives the signals from the setting dial 16 and the selection switch 17 and controls the traveling speed and the engine speed as described below.

  That is, the setting dial (setting means) 16 adjusts the upper limit engine speed when the accelerator lever 14 is rotated to the maximum operating position when the selection switch 17 is operated to the accelerator lever 14 side. When the selection switch 17 is operated to the shift lever 13 side, the upper limit traveling speed when the shift lever 13 is rotated to the maximum speed position is adjusted and set. This is the configuration.

  In this configuration, when the selection switch 17 is operated to the accelerator lever 14 side, the accelerator lever 14 is rotated backward to the maximum operation position as indicated by an arrow B1, thereby causing the engine to operate. The engine speed can be set to a desired engine speed adjusted and set in advance by the operator using the setting dial 16.

  Further, when the selection switch 17 is operated to the shift lever 13 side, the shift speed is adjusted by rotating the shift lever 13 in the rearward direction to the maximum operation position as indicated by an arrow A1. The desired traveling speed can be adjusted and set in advance by the operator using the setting dial 16.

  That is, the selection switch 17 rotates the shift lever 13 to the maximum speed position when adjusting / setting the engine speed with the setting dial 16 when the accelerator lever 14 is rotated to the maximum operation position. A function is provided for selecting when the travel speed when operated is adjusted / set by the setting dial 16.

  By the way, in the tractor 1 to which the work device 7 such as a rotary tiller is mounted, a work travel mode in which the vehicle travels straight at a work speed while performing the work by the work device 7 by adjusting and setting the setting dial 16. The engine speed adjusted and set by the setting dial 16 and the setting dial 16 so that the working device 7 is turned off and the vehicle is turned at a slow speed. A combination with the adjusted / set traveling speed is set as one mode, and a plurality of the combined modes are set.

  Therefore, in the embodiment of the present invention, the storage unit 18 is provided in the controller 15, and the storage unit 18 stores the plurality of combination modes, for example, the work travel mode and the turning travel mode. . Then, one of the stored combination modes is selected by a mode changeover switch 19 provided at an appropriate location such as the shift lever (shift operation tool) 13 as shown in FIG. To be configured.

  According to this configuration, by operating the mode changeover switch 19, for example, a work travel mode in which the vehicle travels straight while performing work using various work devices, or a turn travel in which the work by the work devices is stopped in a headland or the like and the vehicle is turned. Switching between modes is extremely easy.

  Furthermore, in the embodiment of the present invention, each combination mode switched by the mode switch 19 is linked to a one-touch lift switch 20 that lifts and lowers the work device 7 attached to the tractor 1. ing.

  According to this configuration, for example, the working device 7 is shifted from the working traveling mode in which the working device 7 is lowered to the turning traveling mode in which the working device 7 is lifted, or the working device 7 is moved from the turning traveling mode in which the working device 7 is lifted. Can be quickly performed by operating the one-touch lift switch 20 on the work device 7.

  Needless to say, the combination modes are not limited to the above-described work travel mode and turning travel mode.

  Moreover, although the said embodiment was a case where it applied to the tractor 1 as a traveling working machine, the application is not restricted to the said tractor 1, Naturally also to other traveling working machines, such as a riding type rice transplanter. Can be applied to.

1 Tractor (traveling machine)
DESCRIPTION OF SYMBOLS 5 Engine 7 Work equipment 8 Lifting mechanism 12 Operation operation column 13 Shift lever (shift operation tool)
14 Accelerator lever (accelerator operating tool)
16 Setting dial (setting means)
17 selection switch 18 storage means 19 mode change switch 20 one-touch lift switch

Claims (1)

A shift lever (13) that shifts a traveling speed change mechanism (6) of the tractor (1) on a driving operation column (12 ) of the tractor (1) having a work device (7), and the tractor (1) An accelerator lever (14) for adjusting the rotational speed of the engine (5) mounted on the vehicle, and setting means (16) for adjusting and setting the upper limit engine rotational speed when the accelerator lever (14) is operated to the maximum operating position. ) and in Bei obtain driving operation device,
The upper limit engine speed when the accelerator lever (14) is operated to the maximum operating position is set by the setting means (16) , or the upper limit traveling when the shift lever (13) is operated to the maximum speed position. A selection switch (17) for selecting whether the speed is set by the setting means (16);
Wherein the accelerator lever (14) and said shift lever (13) and said setting means (16), before on Kiun rolling operation column (12), wherein the accelerator lever (14) and said shift lever (13), but Arranged side by side and arranged so that the setting means (16) is adjacent to the rear of the levers (13), (14),
Said selection switch (17), wherein the accelerator lever of the driving operation column (12) (14), be located in the vicinity of the shift lever (13) and said setting means (16), the accelerator lever ( 14) is operated before Symbol setting means (16) on the side to set the engine speed upper limit, the shift lever (13) said setting means and for operating (16) on the side set the running speed of the upper the Teisu so that constitutes the accelerator lever (14) side and the shift lever (13) side and the selectable operations that seesaw switch or a lever switch,
Driving operation device in tractor .

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