JP5118076B2 - Pulse signal output structure of work equipment - Google Patents

Description

  The present invention relates to a pulse signal output structure of a work machine provided with a pulse signal output means for converting information on the work machine into a pulse signal and outputting it to a work device connected to the work machine.

  As the pulse signal output structure of the work implement, based on the output of the electromagnetic pickup type rotation sensor that detects the rotational speed of the driving power, the operation means for calculating the travel speed of the work implement, and the operation position of the transmission operating tool. A reverse detection sensor for detecting the reverse of the work implement, and the pulse signal output means changes the frequency of the pulse signal to be output based on the traveling speed of the work implement output by the calculation means, and the reverse detection sensor outputs There is one configured to change the duty ratio of the pulse signal to be output based on the traveling direction of the working machine (see, for example, Patent Document 1).

JP 2008-161088 A

  In the above configuration, for example, as described in Patent Document 1, fertilizer spreading including a control device that controls the operation of the electric shutter for adjusting the amount of spreading based on the pulse signal output by the pulse signal output means. When the device is connected to the work implement, the controller of the fertilizer application device adjusts the opening degree of the electric shutter based on the output of the application amount setting device provided in the fertilizer application device and the output of the pulse signal output means. become.

  Specifically, the control device for the fertilizer application device, when the output of the calculation means is equal to or greater than the set value and the reverse detection sensor does not detect the reverse of the aircraft, the work implement is based on the pulse signal at that time. Fertilizer at the application rate per unit mileage set by the application rate setter based on the output of the application rate setter and the output of the pulse signal output means (travel speed). The opening degree of the electric shutter is adjusted so that it can be sprayed. Thereby, when the work machine is caused to travel forward, the fertilizer can be accurately sprayed with the spraying amount per unit travel distance set by the spraying amount setting unit regardless of the traveling speed of the work machine.

  If the output of the calculation means is less than the set value, it is determined that the work implement is in a travel stop state based on the pulse signal output by the pulse signal output means at that time, and the reverse detection sensor is When the reverse is detected, it is determined that the work implement is in the reverse traveling state based on the pulse signal output by the pulse signal output means at that time, and regardless of the output of the spray amount setting device, Based on the output of the pulse signal output means (travel stop information or reverse travel information), the opening degree of the electric shutter is made zero so as not to spray fertilizer. As a result, unnecessary fertilizer application can be prevented when the work machine is stopped traveling or traveled backward.

  However, in the above configuration, since the control device of the fertilizer application device determines that the work implement is in the travel stop state based on the output of the pulse signal output unit when the output of the calculation unit is less than the set value, While the work implement is traveling in inertia after the transmission to the drive wheels is interrupted by the operation to the neutral position of the speed changer for stopping the work implement or the depression of the clutch pedal, the current pulse Based on the output of the signal output means, the fertilizer application device continues to apply fertilizer.

  An object of the present invention is to prevent a working device connected to a work machine from operating unnecessarily due to inertial running of the work machine after performing an operation of shutting off the driving power for stopping the work machine. is there.

In order to achieve the above object, in the invention according to claim 1 of the present invention,
A pulse signal output structure of a work machine provided with a pulse signal output means for converting the work machine information into a pulse signal and outputting it to a work device connected to the work machine,
A calculation means for calculating a traveling speed based on an output of a rotation sensor for detecting a rotation speed of the traveling power;
Traveling direction output means for outputting the traveling direction of the work implement;
It includes driving intermittent information output means for outputting driving power intermittent information,
The pulse signal output means changes the frequency of the pulse signal based on the output of the computing means, and the pulse signal based on the output of the traveling direction output means and the output of the running intermittent information output means The duty ratio of the pulse signal is changed so that the traveling state of the work implement can be determined.

  According to this characteristic configuration, when a work device having a control device that performs a control operation based on the output of the pulse signal output means is connected to the work equipment, the traveling speed of the work equipment is determined by the output of the pulse signal output means. And the travel state (travel stop state, forward travel state, reverse travel state) can be determined by the control device of the work device, and the control device can be controlled to perform a control operation on the work device based on the determination result. .

  As a result, if the work device connected to the work machine is operated, for example, during forward travel of the work machine, the work machine is in the forward travel state by the control operation of the control device based on the output of the pulse signal output means. In other words, the work device can be operated in an operation state suitable for the traveling speed of the work implement. Further, when the work machine is in the travel stop state or the reverse travel state, the work device can be stopped.

  In addition, if the work device connected to the work machine is operated when the work machine is traveling forward and backward, the work machine is in a forward running state or by a control operation of the control device based on the output of the pulse signal output means. In the reverse traveling state, the working device can be operated in an operating state suitable for the traveling speed of the work implement. Further, when the work machine is in the travel stop state, the work device can be stopped.

  In addition, the control means of the work device determines whether or not the work implement has stopped traveling based on the pulse signal from the pulse signal output means whose duty ratio has been changed based on the output of the traveling intermittent information output means. Therefore, when a driving power cut-off operation for stopping the work machine is performed, a pulse signal based on the cut-off operation can be received and the work apparatus can be stopped.

  Therefore, it is possible to prevent the working device connected to the working machine from operating wastefully due to the inertial running of the working machine after performing the operation of shutting off the driving power for stopping the working machine. Is a seeding device or a spraying device for spraying fertilizer or medicine, it is possible to prevent waste of seed or fertilizer or medicine due to inertial running of the working machine.

In the invention according to claim 2 of the present invention, in the invention according to claim 1,
It has work intermittent information output means for outputting work power intermittent information,
The pulse signal output means determines whether the work implement is in a work travel state based on the output of the traveling direction output means, the output of the travel intermittent information output means, and the output of the work intermittent information output means. A feature is that the duty ratio of the pulse signal is changed so as to enable discrimination by the pulse signal.

  According to this characteristic configuration, when a work device having a control device that performs a control operation based on the output of the pulse signal output means is connected to the work machine, the work machine is driven by the output of the pulse signal output means. Whether or not it is in a state can be determined by the control device of the work device.

  Thereby, when the work implement is in a work travel state, the work device can be operated in an operation state suitable for the travel speed of the work implement. Further, when the work machine is in the non-working traveling state, the work device can be deactivated.

  Therefore, it is possible to prevent the working device connected to the working machine from operating wastefully when the working machine is in the non-working traveling state.

In the invention according to claim 3 of the present invention, in the invention according to claim 1 or 2,
The traveling direction output means and the traveling intermittent information output means are intermittently connected to the traveling direction of the working machine and the traveling power based on the operation position of a forward / reverse switching lever that can be changed to a neutral position, a forward position, and a reverse position. It is characterized by comprising a forward / reverse sensor for outputting information.

  According to this characteristic configuration, when the forward / reverse switching lever is operated, the forward / backward sensor detects the operation position after the operation, and based on this detection, the pulse signal output means changes the duty ratio of the pulse signal. Based on this output, the control device of the work device connected to the work implement determines the traveling state of the work implement at that time (the traveling direction and the intermittent state of the driving power), and The operation of the work device is controlled so that the operation state of the work device according to the traveling state is obtained.

  Thereby, if the working device connected to the working machine is operated when the working machine is traveling forward, for example, the working machine can be operated by operating the forward / reverse switching lever to the forward position. Further, the operation of the work machine can be stopped by operating the neutral position or the reverse position of the forward / reverse switching lever. That is, when the forward / reverse switching lever is operated to the neutral position or the reverse position, it is possible to prevent the work machine from operating wastefully.

  In addition, the responsiveness of the work device can be improved as compared with the case of detecting the operating state of the forward / reverse switching device in which the operating state is switched by operating the forward / reverse switching lever.

  Therefore, the work device can be appropriately operated with high responsiveness in accordance with the operation position of the forward / reverse switching lever.

In the invention according to claim 4 of the present invention, in the invention according to any one of claims 1 to 3,
The traveling intermittent information output means is constituted by a clutch sensor that outputs intermittent information of traveling power based on an operation position of a clutch pedal for operating a traveling clutch.

  According to this characteristic configuration, when the clutch pedal is depressed, the clutch sensor detects the depression position, and based on this detection, the pulse signal output means changes and outputs the duty ratio of the pulse signal. Based on the output, the control device of the work device connected to the work machine determines the traveling state of the work machine at that time (intermittent state of the driving power), and the working device of the work device according to the determined traveling state of the work machine The operation of the work device is controlled so that the operation state is obtained.

  Accordingly, if the working device connected to the working machine is activated when the working machine is traveling forward, for example, the working machine can be stopped by depressing the clutch pedal to the cut position. Further, the work implement can be operated by the return operation to the entry position by releasing the depression of the clutch pedal. That is, when the clutch pedal is depressed to the disengaged position, the work machine can be prevented from operating wastefully.

  In addition, the responsiveness of the working device can be improved as compared with the case of detecting the operating state of the traveling clutch whose operating state is switched by operating the clutch pedal.

  Therefore, the work device can be appropriately operated with high responsiveness according to the operation position of the clutch pedal.

In the invention according to claim 5 of the present invention, in the invention according to any one of claims 1 to 4,
The traveling direction output means and the traveling intermittent information output means are intermittently connected to the traveling direction of the work implement and the traveling power based on the operation position of the speed change operation tool operable in the neutral position, the forward shift area, and the reverse shift area. It is characterized by comprising a shift sensor for outputting information.

  According to this characteristic configuration, when the speed change operation tool is operated, the speed change sensor detects the operation position after the operation, and based on this detection, the pulse signal output means changes the duty ratio of the pulse signal and outputs it. Then, based on this output, the control device of the work device connected to the work machine determines the travel state of the work machine at that time (the traveling direction and the intermittent state of the power for travel), and the determined travel state of the work machine The operation of the work device is controlled so that the operation state of the work device according to the above can be obtained.

  As a result, if the work device connected to the work implement is operated, for example, when the work implement is traveling forward, the work implement can be operated by operating the shift operation tool to the forward shift region. Further, the operation of the work implement can be stopped by an operation to the neutral position of the speed change operation tool or the reverse speed change area. In other words, it is possible to prevent the work implement from operating wastefully when the shift operating tool is operated to the neutral position or the reverse shift range.

  In addition, the responsiveness of the working device can be improved as compared with the case of detecting the operating state of the transmission in which the operating state is switched by the operation of the transmission operating tool.

  Therefore, the work device can be appropriately operated with high responsiveness in accordance with the operation position of the speed change operation tool.

In the invention according to claim 6 of the present invention, in the invention according to claim 4,
The threshold value for determining the operation position of the clutch pedal is such that the value in the release direction of the clutch pedal is greater than the value in the depression direction of the clutch pedal than the value of the clutch sensor at the release position of the clutch pedal. It is characterized by having hysteresis so as to be close to the detected value.

  According to this characteristic configuration, it is possible to prevent the operation state of the work device from being frequently switched by operating the clutch pedal.

It is a whole side view of the tractor which connected the manure spreader. It is a block diagram which shows the control structure regarding the output of a pulse signal. It is a figure which shows the relationship between the travel speed of a body, and the frequency of a pulse signal. It is a figure which shows the relationship between the state of a body, and the duty ratio of a pulse signal. It is a block diagram which shows the control structure regarding the output of the pulse signal in another embodiment.

  Hereinafter, as an example of a mode for carrying out the present invention, an embodiment in which a pulse signal output structure of a working machine according to the present invention is applied to a tractor that is an example of a working machine will be described with reference to the drawings.

  As shown in FIG. 1, this tractor is equipped with a water-cooled engine 1 at the front, and power from the engine 1 is transmitted to a pair of left and right front wheels 2 for steering and a pair of left and right rear wheels as main drive wheels. A four-wheel drive type that transmits to the wheel 3 is configured. At the rear of the tractor, a front wheel steering wheel 4 and a driver's seat 5 are provided to form a boarding driving unit 6 and a cabin 7 that covers the boarding driving unit 6 is provided.

  The power from the engine 1 is distributed to the travel transmission system and the work transmission system via an electro-hydraulic control type main clutch (an example of a travel clutch) 8, and the power supplied to the travel transmission system is distributed to the left and right front wheels 2. And transmitted to the rear wheel 3. The power supplied to the work transmission system is transmitted to a power take-out PTO shaft 10 provided at the rear end of a transmission case (hereinafter abbreviated as T / M case) 9 also serving as a body frame.

  Although not shown in the drawings, the traveling transmission system includes an electrohydraulic control type main transmission that enables 12-speed shifting operation, an electrohydraulic control-type sub-transmission that allows 3 shifting operation, An electro-hydraulic control type forward / reverse switching device that enables switching operation, an electro-hydraulic control type front wheel transmission that enables intermittent operation and double speed operation of the left and right front wheels 3, a differential device for front wheels, And a differential for a rear wheel.

  In the work transmission system, an electro-hydraulic control type work clutch that enables intermittent operation of transmission to the PTO shaft 10, and an electro-hydraulic control that enables three-stage shift operation and forward / reverse switching operation of the PTO shaft 10 A work-type gearbox, and the like.

  As shown in FIG. 1, at the rear of the T / M case 5, a pair of left and right lift cylinders 11 that are hydraulic, a pair of left and right lift arms 12 that swings up and down by the operation of the left and right lift cylinders 11, etc. The fertilizer spraying device 14 which is an example of a working device is connected so as to be movable up and down through a working device connecting link mechanism 13 interlocking with the left and right lift arms 12.

  As shown in FIGS. 1 and 2, the fertilizer application device 14 includes a fertilizer application frame 15 connected to the link mechanism 13, a fertilizer storage hopper 16, an application amount adjusting shutter 17, an electric motor 18 for driving the shutter, A control device 19 for controlling the operation of the electric motor 18 and a rotary blade 20 for spraying are provided. The control device 19 is configured using a microcomputer provided with a CPU, an EEPROM, and the like. The power extracted from the PTO shaft 10 is transmitted to the rotary blade 20 via an external transmission mechanism 21 configured to be bendable and extendable.

  As shown in FIG. 2, the tractor includes a travel shift control for controlling the operation of the main clutch 8 and the main transmission, a PTO shift control for controlling the operation of the work clutch and the work transmission, and the left and right lifts. An electronic control unit (hereinafter abbreviated as “ECU”) 22 is mounted for controlling the operation of the cylinder 12 to perform lifting control for moving the working device up and down. The ECU 22 is configured using a microcomputer provided with a CPU, an EEPROM, and the like.

  The ECU 22 includes a calculation means 22A for calculating the traveling speed of the aircraft, a pulse signal output means 22B for converting the calculation result of the calculation means 22A into a pulse signal, and the like.

  The calculation means 22A is used for the output of the electromagnetic pickup type rotation sensor 23 for detecting the output rotation speed of the auxiliary transmission located on the lower side in the transmission direction of the traveling transmission system, the outer diameter of the rear wheel 3 written in the EEPROM, and the like. Based on this, the travel speed of the aircraft is calculated.

  The pulse signal output means 22B changes the frequency of the pulse signal to be output based on the traveling speed of the aircraft, which is the calculation result of the calculation means 22A. Specifically, as shown in FIG. 3, the frequency of the pulse signal to be output is changed so that the relationship between the frequency of the pulse signal to be output and the traveling speed of the airframe output by the computing means 22A is substantially directly proportional. For example, when the traveling speed is 0.1 km / h, the frequency of the output pulse signal is 1 Hz, and when the traveling speed is 30 km / h, the frequency of the output pulse signal is 300 Hz.

  However, when the traveling speed is less than 0.1 km / h, the frequency of the output pulse signal is set to 0.5 Hz. Thereby, it is possible to cause the control device 19 of the fertilizer spreading device 14 to distinguish between a state where the work machine has stopped traveling and a state where no pulse signal is received from the work machine.

  The pulse signal output means 22B is a forward / reverse sensor (travel direction output means A and travel intermittent information output means) for detecting an operation position of the forward / reverse switching lever 24 that can be changed to a neutral position, forward position, and reverse position. Example of B) Clutch sensor for detecting output of 25, output of dial type PTO switch (example of work intermittent information output means C) 26 for commanding intermittent operation of PTO clutch, and depression amount of clutch pedal 27 (Example of traveling intermittent information output means B) Based on the output of 28, the duty ratio of the pulse signal to be output is changed.

  Specifically, the operation position of the forward / reverse switching lever 24 is determined based on the output of the forward / reverse sensor 25. When the operating lever 24 is in the neutral position, it is determined that the operating state of the forward / reverse switching device is in the neutral state, and when the operating lever 24 is in the forward position, it is determined that the operating state of the forward / backward switching device is the forward state. If it is in the reverse position, it is determined that the operating state of the forward / reverse switching device is the reverse state.

  Further, based on the output of the PTO switch 26, it is determined whether the operation position of the PTO switch 26 is an on position or a cut position. When the PTO switch 26 is in the on position, it is determined that the operating state of the PTO clutch is in the transmission state, and when it is in the disengaged position, it is determined that the operating state of the PTO clutch is in the disconnected state.

  Further, it is determined based on the output of the clutch sensor 28 whether or not the depression operation of the clutch pedal 27 exceeding the threshold value for determining the operation position of the clutch pedal 27 is performed. When the stepping operation exceeding the threshold value of the clutch pedal 27 is not performed (hereinafter referred to as the case where the clutch pedal 27 is in the engaged position), it is determined that the operating state of the main clutch 8 is the transmission state, and the clutch pedal When the stepping operation exceeding the threshold value 27 is performed (hereinafter referred to as the case where the clutch pedal 27 is in the disengaged position), it is determined that the operating state of the main clutch 8 is the disengaged state.

  Then, as shown in FIG. 4, based on the determination result, when the operation lever 24 is in the forward position, the PTO switch 26 is in the on position, and the clutch pedal 27 is in the on position, the working travel state And the duty ratio of the output pulse signal is changed to 50%. Further, when the operation lever 24 is in the neutral position or the reverse position, the PTO switch 26 is in the on position, and the clutch pedal 27 is in the on position, or the operation lever 24 is in the forward position and the PTO switch 26 is in the on position. If the clutch pedal 27 is in the disengaged position, or if the operation lever 24 is in the neutral position or reverse position, the PTO switch 26 is in the on position, and the clutch pedal 27 is in the disengaged position, the operation is stopped. The duty ratio of the output pulse signal is changed to 75%. Further, regardless of the operation position of the operation lever 24 and the operation position of the clutch pedal 27, when the PTO switch 26 is in the off position, it is determined that the mobile travel state or the travel stop state, and the pulse signal to be output Change the duty ratio to 25%.

  As shown in FIG. 2, the ECU 22 can be connected to the control device 19 of the fertilizer application device 14 via a connector 29. Thereby, the control apparatus 19 of the fertilizer spreading apparatus 14 can receive the pulse signal which the pulse signal output means 22B of ECU22 outputs.

  The control device 19 of the fertilizer application device 14 is activated or deactivated by operating the power switch 30. During operation, the spraying per unit travel distance set by the spraying amount setting unit 30 is based on the output of the spraying amount setting device 31 provided in the fertilizer spraying device 14 and the output of the pulse signal output means 22B. The opening degree of the shutter 17 is adjusted so that the fertilizer is sprayed in an amount, and the fertilizer is not wasted due to the wasteful operation of the fertilizer spraying device 14 during non-working travel.

  Specifically, the forward / reverse switching lever 24 is operated to the forward position, the PTO switch 26 is operated to the on position, and the depression operation of the clutch pedal 27 is released (when the forward travel is performed with the PTO shaft 10 driven). ), Based on the output of the spread amount setting device 31 and the output of the pulse signal output means 22B, a target opening degree of the shutter 17 corresponding to the traveling speed of the work implement is set, and a shutter for detecting the opening degree of the shutter 17 The operation of the electric motor 18 is controlled so that the output of the sensor 32 matches the target opening.

  As a result, when the forward / reverse switching lever 24 is operated to the forward position, the PTO switch 26 is operated to the on position, and the depression operation of the clutch pedal 27 is released, the spray amount setting is performed regardless of the traveling speed of the work implement. The fertilizer can be sprayed accurately with the spraying amount per unit travel distance set by the vessel 31.

  Then, the non-work in which any one of the operation to the neutral position or the reverse position of the forward / reverse switching lever 24, the operation to the turning position of the PTO switch 26, and the stepping operation to the engagement position of the clutch pedal 27 is performed. During traveling, the target opening of the shutter 17 corresponding to the traveling speed of the work implement is set to zero based on the output of the pulse signal output means 22B, and the output of the shutter sensor 32 that detects the opening of the shutter 17 is the target opening. The operation of the electric motor 18 is controlled to match the degree.

  Thereby, any of the operation to the neutral position or the reverse position of the forward / reverse switching lever 24, the operation to the turning position of the PTO switch 26, and the stepping operation to the engagement position of the clutch pedal 27 is performed. When working, it is possible to prevent waste of fertilizer due to wasteful operation of the fertilizer spreading device 14.

  Further, it is determined whether or not the frequency of the pulse signal output by the pulse signal output means 22B is 0.5 Hz or more. When the frequency is less than 0.5 Hz, the alarm device 33 provided in the fertilizer application device 14 is activated. Let Thereby, it is possible to notify the operator of forgetting to connect the connector 29 or occurrence of disconnection between the working machine and the fertilizer application device 14.

  The pulse signal output circuit employs an open collector method. Further, in order to prevent chattering of the fertilizer spreader 14, the value in the depressing direction of the clutch pedal 27 is set to a threshold value for determining the operation position of the clutch pedal 27 than the value in the depressing direction of the clutch pedal 27. The hysteresis is provided so as to be close to the detection value of the clutch sensor 28 at the depression release position of the clutch pedal 27.

    [Another embodiment]

[1] As a working machine, as long as it has the pulse signal output means 22B, it may be a riding rice transplanter configured to enable attachment of a fertilizer application device, a medicine spraying device, or the like.

[2] The working device 14 may be a medicine spraying device, a seeding device, or the like as long as it includes a control device that performs a control operation based on the output of the pulse signal output means.

[3] The traveling direction output means A and the running intermittent information output means B may be constituted by forward / reverse sensors that detect the operating state of the forward / reverse switching device.

[4] As the traveling direction output means A and the traveling intermittent information output means B, work is performed based on the operation position of a speed changer such as a speed change lever or a speed change pedal that can be operated in the neutral position, the forward speed change area, and the reverse speed change area. You may make it provide the speed-change sensor which outputs the advancing direction of a machine, and the intermittent information of the power for driving | running | working.

[5] As shown in FIG. 5, as the traveling direction output means A and the traveling intermittent information output means B, a shift lever or shift gear that can be operated in the neutral position, forward shift area and reverse shift area together with the forward / reverse sensor 25. You may make it provide the speed change sensor 35 which outputs the intermittent direction information of the advancing direction of a working machine based on the operation position of the speed change operation tools 34, such as a pedal, and driving power.

[6] The traveling direction output means A and the driving intermittent information output means B may be constituted by a main transmission sensor that detects an operating state of the main transmission. Further, the traveling intermittent information output means B may be constituted by a sub transmission sensor that detects an operating state of the sub transmission. Further, the main shift sensor and the sub shift sensor may be provided together with the forward / reverse sensor 25, the shift sensor 35, and the like.

[7] The work intermittent information output means C may be constituted by a work clutch sensor that detects an operating state of the work clutch.

[8] The duty ratio of the pulse signal output from the pulse signal output means 22B is set so that the work implement is in a neutral stop state (for example, the state in which the forward / reverse switching lever 24 is in the neutral position) and in the reverse traveling state (for example, the forward / reverse switching lever 24). May be configured so that the neutral stop state of the work implement and the reverse travel state can be determined by a pulse signal.

  As long as the pulse signal output structure of the working machine according to the present invention includes a pulse signal output means, the working machine such as a tractor or a riding rice transplanter configured to be capable of attaching a fertilizer application device, a chemical spraying device, or the like. Can be applied to.

DESCRIPTION OF SYMBOLS 14 Work apparatus 22B Pulse signal output means 23 Rotation sensor 22A Calculation means A Travel direction output means B Traveling intermittent information output means C Working intermittent information output means 24 Forward / reverse switching lever 25 Forward / reverse sensor 8 Traveling clutch 27 Clutch pedal 28 Clutch sensor 34 Shifting operation tool 35 Shifting sensor

Claims (6)

A pulse signal output structure of a work machine provided with a pulse signal output means for converting the work machine information into a pulse signal and outputting it to a work device connected to the work machine,
A calculation means for calculating a traveling speed based on an output of a rotation sensor for detecting a rotation speed of the traveling power;
Traveling direction output means for outputting the traveling direction of the work implement;
It includes driving intermittent information output means for outputting driving power intermittent information,
The pulse signal output means changes the frequency of the pulse signal based on the output of the computing means, and the pulse signal based on the output of the traveling direction output means and the output of the running intermittent information output means A pulse signal output structure for a work machine, wherein the duty ratio of the pulse signal is changed so that the traveling state of the work machine can be determined by the above. It has work intermittent information output means for outputting work power intermittent information,
The pulse signal output means determines whether the work implement is in a work travel state based on the output of the traveling direction output means, the output of the travel intermittent information output means, and the output of the work intermittent information output means. 2. The pulse signal output structure for a working machine according to claim 1, wherein the duty ratio of the pulse signal is changed so as to enable discrimination by the pulse signal.   The traveling direction output means and the traveling intermittent information output means are intermittently connected to the traveling direction of the working machine and the traveling power based on the operation position of a forward / reverse switching lever that can be changed to a neutral position, a forward position, and a reverse position. The pulse signal output structure for a working machine according to claim 1 or 2, characterized by comprising a forward / reverse sensor for outputting information.   4. The driving intermittent information output means is constituted by a clutch sensor that outputs intermittent information of driving power based on an operation position of a clutch pedal for operating a driving clutch. The pulse signal output structure of the working machine according to any one of the above.   The traveling direction output means and the traveling intermittent information output means are intermittently connected to the traveling direction of the work implement and the traveling power based on the operation position of the speed change operation tool operable in the neutral position, the forward shift area, and the reverse shift area. The pulse signal output structure for a working machine according to any one of claims 1 to 4, wherein the structure is constituted by a shift sensor that outputs information.   The threshold value for determining the operation position of the clutch pedal is such that the value in the release direction of the clutch pedal is greater than the value in the depression direction of the clutch pedal than the value of the clutch sensor at the release position of the clutch pedal. 5. The pulse signal output structure for a working machine according to claim 4, wherein hysteresis is provided so as to be close to the detected value.

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