JP2008141963A - Agricultural work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural work vehicle that does not require increase in the number of connecting cables, even if the number of operating parts of a remote control means is increased. <P>SOLUTION: The agricultural work vehicle 1 is equipped with a control means 5 and the remote control means 6, connected via the connecting cable 7 to the control means 5. The connecting cable 7 comprises 4 electric wires, i.e. an electric power source line 16, a grounding conductor 17, a first serial signal line 18 and a second serial signal line 19. The first serial signal line 18 is a signal line for transmitting serial signals, from the remote control means 6 to the control means 5. The second serial signal line 19 is a signal line for transmitting the serial signals, from the control means 5 to the remote control means 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a farm machine that does not require an increase in the number of wires of a connection cable even if the number of operation units of a remote control means is increased.

Conventionally, for example, a control unit (control box or the like) that controls a driving unit such as a hydraulic cylinder that rotates left and right extension working units, and a switch that is connected to the control unit via a connection cable and is a plurality of operation units. Agricultural machines such as scrapers equipped with remote control means (such as an operation box) are known (see, for example, Patent Document 1).
JP 10-337102 A

  However, in the conventional agricultural machine, for example, when there are 10 switches of remote control means, the number of wires of the connection cable is 11 in total, “10” of the number of switches and “1” of one common line. If the number of switches of the remote control means increases, the number of wires in the connection cable must be increased by that amount.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which does not need to increase the number of the electric wires of a connection cable, even if the number of the operation parts of a remote control means is increased.

  The agricultural machine according to claim 1 includes control means and remote operation means connected to the control means via a connection cable and having a plurality of operation units, wherein the connection cable is controlled from the remote operation means. A first serial signal line for sending a serial signal to the means, and a second serial signal line for sending a serial signal from the control means to the remote control means.

  The farm machine according to claim 2 is the farm machine according to claim 1, wherein the connection cable informs that the first control signal line for sending a control signal notifying that a serial signal is sent and that the serial signal has been received. And a second control signal line for sending a control signal.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the connection cable has a power line and a ground line.

  According to the present invention, the connection cable includes a first serial signal line for sending a serial signal from the remote control means to the control means, and a second serial signal line for sending a serial signal from the control means to the remote control means. Therefore, the number of wires of the connection cable can be made constant regardless of the increase or decrease of the number of operation parts of the remote control means. Therefore, even if the number of operation parts of the remote control means is increased, the number of wires of the connection cable can be reduced. There is no need to increase it.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 1 denotes an agricultural working machine. The agricultural working machine 1 is a towing type scraper that is used by being connected to the rear portion of a tractor (not shown) that is a traveling vehicle, for example. The farm work machine 1 selectively performs the cutting work and the earthing work while moving on the farm field by traveling of the tractor while being connected to the rear part of the tractor.

  Agricultural work machine 1 is centered on a longitudinally central working part connected to a three-point link part at the rear of the tractor, and a substantially longitudinal support shaft (rotation center axis) at both left and right ends of the central working part. And an extension working part that constitutes a pair of left and right actuating means 3 that are provided so as to be pivotable in the vertical direction and can be switched between a folded state and an unfolded state by pivoting about the support shaft, and extending by outputting a driving force And a hydraulic cylinder constituting the driving means 4 for rotating the working portion around the support shaft.

  The central working unit is a machine frame that is long in the left-right direction, a rotary-type tiller that is provided rotatably on the machine frame, and that can be rotated up and down on the machine frame, and performs leveling work behind the tiller It has a leveling body composed of a flat plate and a rake. The extension work unit is a longitudinal extension machine frame in the left-right direction, a rotary type tiller that is provided rotatably on the extension machine frame, and is provided on the extension machine frame so that it can be rotated up and down. It has a leveling body and the like composed of a leveling plate and a rake for leveling.

  In addition to the extension work unit, the agricultural work machine 1 includes a center earth-moving lock means that fixes the ground leveling body of the central work unit to the machine frame and puts it in the earth-drawing lock state, as the operation means 3. Side earthing lock means for fixing the leveling body to the extension machine frame to bring it into the earthing lock state, an extension rake provided so as to be pivotable up and down, etc. .

  In addition to the hydraulic cylinder, the agricultural machine 1 includes a center earthing lock motor for operating the center earthing locking means, a side earthing locking motor for operating the side earthing locking means, and an extension rake. An extension rake motor or the like that rotates the rake is provided.

  The drive means 4 is electrically connected to a control means (control box or the like) 5 configured by a CPU, an input port, an output port, and the like and controlling each drive means 4. The control means 5 is attached to the machine frame of the central working unit. Remote control means (such as an operation box) 6 for remotely operating the operation means 3 based on the control of the control means 5 is electrically connected to the control means 5 via a connection cable 7. Data is exchanged with the remote control means by serial communication. The remote control means is disposed at a position on the tractor side, for example, a position where a driver riding on the tractor can operate.

  As shown in FIGS. 1 and 2, the remote operation means 6 includes a plurality of operation units 11 and a display unit 12 made up of a light emitting diode (LED) or a liquid crystal display (LCD). The plurality of operation sections 11 are an open switch that is operated when the extension work section is in the unfolded state, a close switch that is operated when the extension work section is in the folded state, and a selection switch that is operated when selecting the extension work section. Rotating the earthing work switch operated when putting the leveling body into the earthing lock state, turning the earthing work switch operated when releasing the earthing lock state of the leveling body and making it the condition of freeing, and the extension rake A rake switch or the like that is operated when operating. The remote control means 6 includes a parallel / serial conversion IC 14 and a level conversion IC 15. The level conversion IC 15 converts a serial signal of -10V to + 10V into + 5V.

  As shown in FIGS. 1 and 2, the connection cable 7 includes, for example, four electric wires, that is, a power supply line (power supply +) 16, a ground line (power supply −) 17, a first serial signal line 18, and a second serial signal line. It is composed of 19. The power line 16 and the ground line 17 are for supplying electric power to the remote control means 6 from the control means 5 side. The first serial signal line 18 is a signal line for sending a serial signal (serial data) from the remote operation means 6 to the control means 5. The second serial signal line 19 is a signal line for sending a serial signal (serial data) from the control means 5 to the remote operation means 6.

  According to the agricultural machine 1, the connection cable 7 for connecting the remote control means 6 and the control means 5 is connected to the power line 16, the ground line 17, the first serial signal line 18 and the second serial signal line 19. Therefore, the number of wires of the connection cable 7 can be fixed to, for example, four regardless of the increase or decrease in the number of operation units 11 and display units 12 of the remote operation means 6, that is, the number of input / output devices. Even if the number of operation units 11 of the remote operation unit 6 is increased, it is not necessary to increase the number of wires of the connection cable 7 and it is possible to easily and appropriately cope with an increase in the number of operation units 11 of the remote operation unit 6.

  In addition, since the number of wires in the connection cable 7 is as small as four, each wire can be made thicker and difficult to break, and by adding a spare line, two serial signal lines make it hard to break down. Can be.

  In the above embodiment, the configuration in which the remote operation means 6 has the level conversion IC 15 has been described. However, as shown in FIG. 3, for example, the level conversion IC 15 is provided on the control means 5 side, and the control means 5 performs the level conversion. It is good also as a structure which has IC15. In the configuration shown in FIG. 3, the connection cable 7 for connecting the remote control means 6 and the control means 5 has six electric wires, that is, a power line (power +) 16, a ground line (power-) 17, and a first serial. The signal line 18, the second serial signal line 19, the first control signal line 21, and the second control signal line 22 are configured.

  The first control signal line 21 is a signal line for sending a control signal from the remote operation means 6 to the control means 5 informing the control means 5 that a serial signal is to be sent. The second control signal line 22 is a signal line for sending a control signal from the control means 5 to the remote operation means 6 informing the remote operation means 6 that the serial signal has been received.

  In addition, the agricultural working machine 1 is not limited to a scraper, and may be a cocoon coater, a fertilizer seeder, or the like.

It is a lineblock diagram of an agricultural machine concerning one embodiment of the present invention. It is principal part explanatory drawing of an agricultural working machine same as the above. It is principal part explanatory drawing of the agricultural working machine which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farm machine 5 Control means 6 Remote operation means 7 Connection cable
11 Operation unit
16 Power line
17 Ground wire
18 First serial signal line
19 Second serial signal line
21 First control signal line
22 Second control signal line

Claims (3)

Control means;
Remote control means connected to the control means via a connection cable and having a plurality of operation units,
The connection cable is
A first serial signal line for sending a serial signal from the remote control means to the control means;
A farm working machine comprising: a second serial signal line for sending a serial signal from the control means to the remote control means. Connection cable
A first control signal line for sending a control signal notifying that a serial signal is sent;
The agricultural machine according to claim 1, further comprising a second control signal line for sending a control signal notifying that a serial signal has been received. The agricultural machine according to claim 1 or 2, wherein the connection cable includes a power line and a ground line.

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