JP4448014B2 - Working vehicle - Google Patents

Description

  The present invention relates to a working vehicle such as a tractor including a laser receiver.

  Laser leveling control is known that uses laser light to maintain a constant work level. When performing this type of laser leveling control, a laser projector is installed at a predetermined location in the work site, while a laser receiver is provided in the working section of the work vehicle or the machine, and the laser receiver receives the laser light. The level is displayed on the light receiving state display device, and the working unit is automatically lifted and lowered based on the light receiving level of the laser light in the laser receiver.

The laser receiver is usually attached to the working part of the working vehicle or the machine so that the height can be adjusted. This is because the light receiving range of the laser receiver is matched with the light projecting level of the laser projector. As a light receiver height adjusting mechanism for adjusting the height of the laser light receiver, there is a mechanism for moving the laser light receiver up and down by the power of an actuator (see, for example, Patent Document 1). According to such a light receiver height adjustment mechanism, it is possible to adjust the height of the laser light receiver while sitting in the driver's seat by providing the operation portion in the vicinity of the driver's seat.
JP 2002-125410 A

  However, when the operation unit of the receiver height adjustment device is provided in the vicinity of the driver's seat, it is not only necessary to secure a mounting location in the vicinity of the driver's seat, but it is also easy to use by increasing the number of operating tools in the vicinity of the driver's seat. There is a possibility of lowering. In addition, since the operation unit of the receiver height adjustment device is usually operated while looking at the light reception state display device, the workability during height adjustment may be reduced depending on the positional relationship with the light reception state display device. There is.

The present invention has been created in order to solve these problems in view of the above circumstances, and is provided with a control unit covered with a cabin and provided with a meter panel in front of a driver's seat, and a laser projector. Work including a laser receiver that receives the projected laser beam, a light receiving state display device that displays a light receiving state of the laser receiver, and a receiver height adjustment mechanism that adjusts the height of the laser receiver A working vehicle characterized in that the light receiving state display device protrudes from a side of a meter panel and an operation portion of a light receiver height adjusting mechanism is mounted on a substrate of the light receiving state display device. It is a car.
If comprised in this way, when attaching the operation part of a light receiver height adjustment apparatus, it is not only necessary to secure the attachment place by an operation part single-piece | unit, but also the problem which reduces the usability of another operation tool. In addition, since it can be operated while looking closely at the light receiving state display device, it is easy to adjust the height of the laser receiver.

  Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of a crawler tractor, and a rear working machine 2 such as a rotary is mounted on a rear portion of the traveling machine body 1 via a lifting link mechanism 3. The lift link mechanism 3 is provided with a lift arm cylinder 4 and a lift rod cylinder 5, and the rear working machine 2 is lifted and lowered according to the hydraulic operation of the lift arm cylinder 4, and according to the hydraulic operation of the lift rod cylinder 5. As a result, the rear working machine 2 is tilted left and right. In the present embodiment, the rear working machine 2 is a target of laser control described later, but the front working machine 6 mounted on the front portion of the traveling machine body 1 may be the target.

  A mast 7 is erected on the rear working machine 2, and a laser receiver 8 having a predetermined light receiving width in the vertical direction is attached to the upper side of the mast 7. On the other hand, a laser projector 9 for rotating and projecting laser light in a horizontal direction or an arbitrary inclination direction is installed at a predetermined place in a work site or a farm field, and the laser light projected from the laser projector 9 The light is received by the device 8. Thereby, it becomes possible to detect the working height of the rear working machine 2 based on the laser beam.

  The mast 7 is provided with a light receiver height adjusting mechanism 10 for adjusting the height of the laser light receiver 8. The light receiver height adjusting mechanism 10 of the present embodiment is composed of an electric cylinder that causes the mast 7 to extend and contract, and the height of the laser receiver 8 is adjusted by the expansion and contraction operation of the mast 7 by the electric cylinder. The reference height of the rear working machine 2 in the laser control is set.

  A control unit 11 is configured on the traveling machine body 1. The control unit 11 is covered with a cabin 12, and a light receiving state display device 13 for displaying a light receiving state (light receiving level) of the laser receiver 8 and a side with a liquid crystal monitor for switching and setting various controls. A panel 14, a meter panel 15 equipped with meters and monitor lamps, a control unit 16 for controlling these, and the like are provided. The control unit 16 performs laser control for automatically raising and lowering the rear working machine 2 according to the light reception level of the laser receiver 8, and light reception for performing display control of the light reception state display device 13 according to the light reception level of the laser receiver 8. Status display control, side panel control for display control of the liquid crystal monitor in accordance with touch panel operation of the side panel 14, etc., monitor lamp control for controlling lighting of the monitor lamp in the meter panel 15 and the like are performed. Hereinafter, the configuration and operation of the light reception state display device 13, the side panel 14, and the meter panel 15 will be sequentially described.

  The light reception state display device 13 includes, for example, a level decrease display unit 13a, a level increase display unit 13b, and a level appropriate display unit 13c. When the light reception level of the laser receiver 8 is low, the level decrease display unit 13a is turned on. When the light receiving level of the laser receiver 8 is high, the level raising display section 13b is turned on, and when the light receiving level of the laser receiver 8 is appropriate, the level appropriate display section 13c is turned on. In this embodiment, each display part 13a-13c is comprised by several light emitting diode LED arrange | positioned on the board | substrate 17, However, You may comprise with a liquid crystal panel or a lamp | ramp.

  The light receiving state display device 13 is integrally provided with an operation unit of the light receiver height adjusting mechanism 10. Specifically, a mast raising switch 18 for raising the mast 7 (extension operation) and a mast lowering switch 19 for lowering the mast 7 (reduction operation) are incorporated in the light receiving state display device 13 to drive the motor. It is connected to the motor M of the light receiver height adjusting mechanism 10 via the circuit 20. In this way, when attaching the operation part of the light receiver height adjusting mechanism 10, it is not necessary to secure a place for attaching the operation part alone, and there is no inconvenience of reducing the usability of other operation tools. In addition, the height adjustment mechanism 10 can be operated while looking closely at the light reception state display device 13, so that the height adjustment of the laser light receiver 8 can be easily performed.

  In the present embodiment, the mast raising switch 18 and the mast lowering switch 19 are constituted by tact switches. In this way, since the mast raising switch 18 and the mast lowering switch 19 can be directly mounted on the substrate 17, not only can the structure of the light receiving state display device 13 be simplified, but also the number of assembly steps can be reduced. Moreover, since the operation part by a tact switch can be comprised flat, it can be made preferable also in design.

  The light receiving state display device 13 is disposed in the cabin 12 and in front of the driver seat 21. Specifically, a bracket 22 is projected from the right side of the meter panel 15, and the light receiving state display device 13 is attached to the bracket 22. If it does in this way, since it is not necessary to give waterproofness and robustness to the light reception state display apparatus 13, the light reception state display apparatus 13 can be comprised cheaply, and light reception is carried out by arrange | positioning ahead of the driver's seat 21. The visibility of the state display device 13 can be improved.

  The side panel 14 includes a liquid crystal monitor 14a with a touch panel, a plurality of setting dials 14b to 14d, and a plurality of setting switches 14e and 14f, and is disposed on the side of the driver's seat 21. The control unit 16 displays a setting screen for various controls on the liquid crystal monitor 14a, and switches and sets various controls in accordance with the touch panel operation. Laser control-related screens include a laser control status display screen 101 and a laser control setting screen 102, and laser control ON / OFF switching by touch panel operation is possible on either screen. In this way, the conventional laser control switch is not required, and the number of parts can be reduced and the cost can be reduced. In the laser control status display screen 101 of the present embodiment, laser control ON / OFF, tilt control ON / OFF, tillage depth display, tilt display, laser reception level display, etc. of the rear work implement 2 are performed. On the laser control setting screen 102, ON / OFF of laser control, ON / OFF of tilt control, depth setting, tilt setting, and the like of the rear working machine 2 can be performed.

  In the meter panel 15, many monitor lamps are arranged in addition to meters. Among these monitor lamps, a laser control on / off lamp 23 indicating an ON / OFF state of laser control is included. In this way, the laser control ON / OFF state can be easily confirmed without opening the laser control state display screen 101 and the laser control setting screen 102.

  In the present embodiment configured as described, the laser receiver 8 that receives the laser light projected from the laser projector 9, the light receiving state display device 13 that displays the light receiving state of the laser receiver 8, and A working vehicle including a light receiver height adjustment mechanism 10 that adjusts the height of the laser receiver 8, and an operation unit of the light receiver height adjustment mechanism 10 is provided integrally with the light reception state display device 13. Therefore, when attaching the operation part of the light receiver height adjusting mechanism 10, it is not necessary to secure a place for attaching the operation part alone, and there is no inconvenience of reducing the usability of other operation tools. In addition, since it can be operated while looking closely at the light reception state display device 13, the height adjustment of the laser receiver 8 can be easily performed.

It is a side view which shows a traveling body and a laser projector / receiver. It is a top view of a control part. It is a block diagram which shows schematic structure of a control system. It is a block diagram which shows the structure of a control system. It is a front view of a light-receiving state display device and a meter panel. (A) is a front view of a light reception state display device, and (B) is a cross-sectional view of the light reception state display device. It is a top view of a side panel. It is explanatory drawing of a laser control state display screen. It is explanatory drawing of a laser control setting screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Back side working machine 7 Mast 8 Laser receiver 9 Laser projector 10 Receiver height adjustment mechanism 11 Control part 13 Light reception state display apparatus 16 Control part 17 Board | substrate 18 Mast raising switch 19 Mast lowering switch 20 Motor drive circuit 21 driving seat

Claims (1)

A control unit that is covered with a cabin and includes a meter panel in front of the driver's seat, a laser receiver that receives laser light emitted from the laser projector, and a light-receiving state display device that displays a light-receiving state of the laser receiver And a working vehicle equipped with a light receiver height adjusting mechanism for adjusting the height of the laser receiver, the light receiving state display device protrudes from the side of the meter panel, and the light receiving state display device A working vehicle characterized in that an operation portion of a light receiver height adjusting mechanism is mounted on a substrate .

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