JP7123835B2 - WORK VEHICLE AND OPERATION LIMITATION SYSTEM FOR WORK VEHICLE - Google Patents

Description

TECHNICAL FIELD The present invention relates to a work vehicle such as an agricultural machine, and a motion restriction system for the work vehicle.

In recent years, leasing of agricultural machinery (an example of working vehicles) such as combines has been utilized. The user has to pay the lease fee in order to continue using the agricultural machine. However, due to circumstances such as the agricultural machine being used overseas, it may be difficult to prompt the user to pay the lease fee even if the user is in arrears. On the other hand, if the agricultural machine is left in use while the lease fee is in arrears, the user cannot be made to pay the lease fee.

Patent Literature 1 describes a system that determines whether or not the current time is within the rental period, and prohibits the operation of the construction machine by not starting the engine if it is not within the rental period. By applying this system, if the user is behind in the payment of the lease fee, the operation of the leased agricultural machine is prohibited, and the user cannot use the agricultural machine for agricultural work, thereby reducing the lease fee. Payment can be practically prompted.

On the other hand, prohibiting any operation of the agricultural machinery until the lease fee is paid may pose a safety hazard. For example, if the operation of the agricultural machine is prohibited in a place such as a slope or a public road that is not suitable for stopping the agricultural machine, and the agricultural machine cannot be moved, a dangerous situation is expected.

JP 2005-255094 A

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a work vehicle capable of restricting movement while ensuring safety, and a system for restricting movement of the work vehicle.

A work vehicle according to the present invention includes a traveling unit, a working unit, and a communication unit that receives control information regarding operation restrictions of the traveling unit and the working unit. Based on the above, the operation restriction executable state is entered in which operation restriction can be executed for the traveling unit and/or the working unit, and when the operation restriction executable state and the operation state of the own machine are in the work preparation state , the traveling section and/or the working section are restricted in operation, and even if the operation restriction executable state is in effect, the traveling section and the working section are not in the work preparation state. is configured so that no operational restrictions are enforced on

In this work vehicle, when it is in the motion restriction executable state and in the work preparation state, the motion of the traveling part and/or the working part is restricted. On the other hand, even in the motion restriction executable state, the motions of the traveling unit and the working unit are not restricted unless the work preparation state is set. Therefore, even if the user is in the motion restricted executable state, motion is allowed when the user has no intention of performing the task. Therefore, for example, when the work vehicle is in a dangerous place or in a dangerous posture, the position and posture of the work vehicle can be changed even if it is in the motion restriction executable state. This provides a work vehicle that can restrict movement while ensuring safety.

When the communication unit is not connected to the machine itself, regardless of whether the operating state of the machine is the work preparation state or not, the movement of the traveling unit and/or the working unit is restricted. It may be configured as A user with malicious intent may try to remove the communication unit before the operation restriction is executed and try to avoid the operation restriction. According to the above configuration, even if such a user removes the communication unit, the operation of the working unit and/or the traveling unit is restricted regardless of whether the operating state of the machine is the work preparation state. be. Therefore, it is possible to prevent unauthorized use by urging the user to connect the communication unit.

When the communication unit is not connected to the machine itself and the operating state of the machine is in the work preparation state, the movement of the traveling unit and/or the working unit is restricted, and the communication unit is automatically activated. It may be configured such that when the mobile device is not connected to the machine and the operating state of the mobile device is not the work preparation state, the operation restriction is not executed for the traveling unit and the working unit. According to such a configuration, when the communication section is removed and in the work preparation state, the operation of the working section and/or the traveling section is restricted, so that unauthorized use can be prevented. Also, even if the communication unit is removed, the operation of the working unit and traveling unit will not be restricted when the work is not ready. You can change your posture.

It is preferable that the operation restriction target for the traveling unit and the working unit can be selectively executed based on the operation restriction target information included in the control information. As a result, it is possible to flexibly limit the operation depending on the situation. For example, for a model that does not support the operation restriction of the working unit, the operation restriction can be executed only for the traveling unit. Even if the model supports movement restrictions for both the working part and the traveling part, it is possible to target only the working part at the first stage, and then target both the working part and the traveling part at the next stage. operational restrictions can be implemented.

An operation tool for switching on/off power of a drive source for the working unit is provided, and the operating state of the machine changes to work preparation in response to a switching operation of the operation tool for transmitting the power of the drive source to the working unit. It is preferable to be in Such a switching operation of the operating tool indicates that the user has the intention of performing the work, and accordingly, by entering the work preparation state in response to this, it is possible to accurately execute the operation restriction.

A motion restriction system for a work vehicle according to the present invention includes the above-described work vehicle and a motion management device that outputs the control information to the communication unit. According to such a configuration, it is possible to provide a motion restriction system for a work vehicle that can perform motion restriction while ensuring safety.

1 is a diagram showing a motion restriction system for a work vehicle according to one embodiment of the present invention; FIG. A diagram showing an example of information displayed on the screen of the vendor device Left side view of a combine harvester Block diagram showing the configuration related to operation limits of the combine Flowchart showing the processing of the control unit regarding the operation limit of the combine Flowchart showing operation restriction state confirmation processing Flowchart showing operation restriction execution/non-execution processing Flowchart showing a modified example of operation restriction execution/non-execution processing A diagram showing a circuit for restricting the movement of the reaping unit A diagram showing a circuit for restricting the movement of the reaping unit Diagram showing a communication unit with multiple circuits connected

[Movement restriction system]
First, a motion restriction system for a work vehicle according to an embodiment of the present invention will be described. As shown in FIG. 1, the operation restriction system 10 includes a combine 1, which is an agricultural machine as an example of a work vehicle, and a management server 2 as an operation management device. The combine 1 includes a traveling section 11, a working section 12, and a communication unit 13 as a communication section. The communication unit 13 communicates with the management server 2 and receives control information regarding operation restrictions of the traveling unit 11 and the working unit 12 . The management server 2 outputs control information to the communication unit 13 and instructs operation restriction of the combine harvester 1 .

A user of the combine harvester 1 has a lease contract with a lessor 3 and can use the combine harvester 1 by paying a lease fee. A management company 4 (for example, a sales company of the combine harvester 1) manages the combine harvester 1 under consignment from the leasing company 3. The leasing company 3 has an operation restriction request device (hereinafter referred to as vendor device 5) for requesting the execution or cancellation of the operation restriction on the combine harvester 1. FIG. The agent device 5 is a computer (tablet, personal computer, etc.) operated by the lease agent 3 and is configured to be able to communicate with the management server 2 of the management company 4 . The management server 2 is configured to be wirelessly communicable with the combine harvester 1 .

The management server 2 stores information about operation restrictions of each combine harvester under management, such as which functions can be restricted and which functions are restricted. Based on these pieces of information, information such as that shown in FIG. The screen 6 displays information about the operation restriction state for four items, "reaping section", "discharge auger", "horizontal control" and "movement". The leasing company 3 can arbitrarily select between "restricted" and "no restriction" of the operation restriction state. A function (“horizontal control” in the example of FIG. 2) that does not correspond to the operation restriction in the model is displayed as “uncontrollable”. The leasing company 3 can request execution or cancellation of the operation restriction on the combine harvester 1 by operating the agent device 5 to switch the operation restriction state. In response to a request from the leasing company 3, the management server 2 transmits control information to the combine harvester 1 to instruct operation restriction.

[Overall structure of combine harvester]
Next, with reference to FIG. 3, the overall structure of the combine 1 will be briefly described. As described above, the combine 1 includes a traveling section 11, a working section 12, and a communication unit 13. As shown in FIG. The working section 12 includes a harvesting section 14 , a threshing section 15 , a sorting section 16 and a storage section 17 . The working unit 12 is mounted on a traveling body 18 supported by the traveling unit 11 . The combine 1 threshes the culms harvested by the reaping unit 14 in the threshing unit 15 while traveling by the traveling unit 11 , sorts the grains in the sorting unit 16 , and stores them in the storage unit 17 . A power unit 19 supplies power to the traveling unit 11 and the working unit 12 .

The traveling unit 11 has a pair of left and right crawlers 20 that support the traveling body 18 . The crawler 20 causes the combine 1 to travel in the front-rear direction and turn in the left-right direction. Power supplied from the power unit 19 is transmitted to the crawler 20 via the transmission 21 . Although not shown, the transmission 21 includes a speed change mechanism driven and controlled by a hydrostatic continuously variable transmission (HST).

Further, the traveling section 11 is provided with an automatic horizontal control mechanism (UFO) (not shown). According to this, the machine body is automatically kept horizontal, and the position of the reaping part 14 and the depth of treatment of the culms during work are adjusted. As a result, the left and right cutting heights are the same, and the variation in grain culm length is reduced, thereby improving the cutting performance. In this way, the traveling section 11 has functions related to “movement” and “horizontal control” of the combine harvester 1 .

The reaping unit 14 is provided in front of the traveling body 18 and reaps a plurality of grain stalks planted in the field. The dividing plate 22 separates the culms of the plurality of grains one by one. The culms cut by the cutting blade 23 are conveyed rearward by conveying devices including the vertical conveying device 24 and the auxiliary conveying device 25 and supplied to the threshing section 15 . The reaping unit 14 is configured to be vertically movable by a reaping elevating cylinder 26 connected to the front end of the traveling body 18 . The threshing section 15 is provided behind the reaping section 14 . The threshing section 15 has a threshing cylinder 27 for threshing the culms. The threshing cylinder 27 rotates to transport the culms rearward while threshing them.

The sorting section 16 is provided below the threshing section 15 . The sorting unit 16 includes a swing sorting device 28 and an air sorting device 29 . The rocking sorting device 28 sorts the threshed grains dropped from the threshing section 15 into grains and straw scraps by rocking in the front-rear direction. The wind sorting device 29 supplies a sorting wind to the rocking sorting device 28, and together with the rocking sorting device 28 sorts the threshed grains into grains and straw scraps. The sorted grains are collected by a grain collection mechanism (not shown) and transported to the storage section 17 .

The storage section 17 is provided behind the harvesting section 14 and on the right side of the threshing section 15 . The reservoir 17 includes a grain tank 30 and a discharge auger 31 . The grain tank 30 stores grains conveyed from the sorting section 16 . The discharge auger 31 is used when the grains in the grain tank 30 are discharged. The discharge auger 31 is configured so that the front end portion (the base end portion on the upstream side of the grain transport) can be rotated and moved up and down freely, and the grains stored in the grain tank 30 can be moved to an arbitrary location. can be discharged.

The power unit 19 has an engine 32 as a drive source. The engine 32 is provided below the control section 33 . The power unit 19 may include an electric motor instead of the engine 32, or may include both the engine 32 and the electric motor. The operation unit 33 is provided with a driver's seat 34 on which an operator sits, and a steering handle 35 is installed in front of the driver's seat 34 . A plurality of operating tools such as a reaping clutch operating tool 36 (see FIG. 4), a threshing clutch operating tool (not shown), and a discharge clutch operating tool 37 (see FIG. 4) are arranged around the steering handle 35. there is

[First Embodiment Regarding Limitation of Operation of Combine Harvester]
Next, 1st Embodiment regarding the operation|movement limitation of the combine 1 is described. As shown in FIG. 4, the combine harvester 1 includes a control unit 40 that controls the operation of the traveling unit 11 and the working unit 12, and a driving unit 50 that drives the traveling unit 11 and the working unit 12 under the control of the control unit 40. Prepare. In the first embodiment, specifications (electrical specifications) are shown in which the operation of the combine harvester 1 is restricted based on the operation control of each part by the control unit 40 .

The control unit 40 includes a reaping ECU 41 that controls driving of the reaping unit 14 , an auger ECU 42 that controls driving of the discharge auger 31 , an HST ECU 43 that controls driving of the HST, a UFO ECU 44 that controls driving of the UFO, and an engine 32 . and an engine ECU 45 that controls driving. The communication unit 13 attached to the combine 1 is electrically connected to the controller 40 by a CAN (controller area network) bus 46, which is an example of a data bus. The communication unit 13 has an antenna 13a for receiving signals containing control information.

The drive unit 50 includes a reaping lift cylinder 26 that operates under the control of the reaping ECU 41, a reaping clutch operation tool 36 for driving or stopping the reaping unit 14, and a reaping lift operation tool 51 for operating the reaping unit 14 up and down. , a discharge clutch motor 52 operated under the control of the auger ECU 42, an auger swing/lift motor 53, a discharge clutch operating tool 37 for driving or stopping the discharge auger 31, and a swing/lift operation for the discharge auger 31. , a straight proportional valve 55 operated under the control of the HSTECU 43, a main transmission operation device 56 (main transmission lever) for driving or stopping the running of the combine harvester 1, and a UFOECU 44. A UFO valve 57 to be operated, a UFO operation tool 58 for operating ON/OFF switching of horizontal control, and an inclination sensor 59 for detecting the level condition of the combine 1 are provided. The above operation tools are configured by levers, buttons, switches, and the like.

The combine harvester 1 enters an operation restriction executable state in which operation restriction can be performed on the traveling unit 11 and/or the working unit 12 based on whether or not the control information is acquired by the communication unit 13 . When the combine harvester 1 is in the operation-restricted executable state and the operating state of the combine harvester 1 is in the work-preparing state, the operation of the traveling unit 11 and/or the working unit 12 is restricted. Even if it is in the executable state, when the operating state of the machine itself is not in the work preparation state, it is configured such that the movement of the traveling unit 11 and the working unit 12 is not restricted. In this embodiment, such operation restriction is performed based on the control of the control section 40 .

When the leasing company 3 requests the management company 4 to restrict the operation, the management server 2 transmits control information about the restriction to the communication unit 13, and the combine harvester 1 is restricted. In the present embodiment, as shown in FIG. 2, four operations, that is, the reaping unit 14 and the discharge auger 31, which are the working unit 12, and the horizontal control (UFO) and movement (HST), which are the traveling unit 11, are subject to operation restriction. there is Instead of or in addition to these, for example, the threshing section 15 and/or the sorting section 16 may be subject to operation restrictions. In the combine harvester 1, it is preferable that at least the reaping part 14 is included in the target of operation restriction. The control information includes information indicating the target of operation restriction (operation restriction target information).

5 to 7 show the processing executed by the control unit 40 regarding operational restrictions on the combine harvester 1. FIG. As shown in FIG. 5, when the power of the combine harvester 1 is turned on, it becomes "START". It is confirmed whether or not it has been removed (communication unit connection confirmation processing S1). The method of confirming the connection of the communication unit 13 is not particularly limited, but for example, it is possible to detect the current value of the circuit connecting the CAN bus 46 and the communication unit 13 and make a determination based thereon. In this process, if the communication unit 13 is connected, a connection flag is set, otherwise a non-connection flag is set.

After completing the communication unit connection confirmation process S1, the operation restriction state of the combine harvester 1 is confirmed (operation restriction status confirmation process S2). As shown in FIG. 6, in the operation restriction state confirmation process S2, it is determined which of the connection flag and the non-connection flag is set (step S21), and the non-connection flag is set (that is, the communication unit 13 is not connected), this process S2 is terminated and the process proceeds to the next operation restriction execution/non-execution process S3. If the connection flag is set (that is, the communication unit 13 is connected), it is determined whether or not the management server 2 is accessible (step S22). If the management server 2 can be accessed, it is determined whether or not the control information is received and the information indicating that the operation restriction is to be released (operation restriction release information) is acquired (step S23).

In this embodiment, a default pattern is shown in which the movement of the traveling unit 11 and the working unit 12 is restricted. Therefore, when the operation restriction cancellation information is obtained in step S23, the operation restriction flag for the traveling unit 11 and/or working unit 12 is turned off (step S24) to make the operation restriction inexecutable. Not limited to this, it is also possible to default to a state in which the movement of the traveling unit 11 and/or the working unit 12 is not restricted. In that case, it may be determined in step S23 whether or not the information indicating that the operation restriction should be executed has been acquired, and if it has not been acquired, the process may proceed to step S24.

If the management server 2 cannot be accessed in step S22, or if the operation restriction release information has not been acquired in step S23, it is determined whether or not the operation restriction flag is set (step S25). If the operation restriction flag is set, the operation restriction flag is set to ON (step S26) to set the operation restriction executable state (that is, the operation restriction executable state). If the operation restriction flag is not set, it is determined whether or not the predetermined period has elapsed (step S27), and if it has elapsed, the operation restriction flag is turned on (step S26). Since the operation restriction flag is turned off if the predetermined period has not elapsed, the execution of the operation restriction is postponed when the combine harvester 1 is temporarily out of service area. This period is not particularly limited, but is, for example, one day at the shortest and one month at the longest, and is calculated from the date and time when it is found that the management server 2 cannot be accessed.

In the operation restriction state confirmation process S2, an operation restriction flag is set for each operation restriction target (reaping unit 14, discharge auger 31, horizontal control (UFO), and movement (HST) in this embodiment). If the operation restriction target information included in the control information has the content of FIG. 2, the operation restriction flag is set for the reaping unit 14 and not set for the discharge auger 31 and HST. FIG. 2 shows the information of models in which the UFO does not support the operation restriction. can be set.

As described above, the combine 1 of the present embodiment is configured to be able to selectively execute operation restriction targets for the traveling section 11 and the working section 12 based on the operation restriction target information included in the control information. Therefore, when the motion restriction target information is only for the traveling unit 11, the motion restriction for the working unit 12 is not executed even if the motion restriction executable state and the operation state are the work preparation state. Similarly, when the motion restriction target information is only for the working portion 12, even if the motion restriction executable state and the motion state are the work preparation state, the motion restriction for the traveling portion 11 is not executed.

After completing the operation restriction state confirmation process S2, a process for executing or not executing the operation restriction is performed (operation restriction execution/non-execution process S3). In this process S3, it is determined whether or not to execute the operation restriction. As shown in FIG. 7, in the operation restriction execution/non-execution process S3, it is determined whether the connection flag or the non-connection flag is set (step S31). It is determined whether or not the flag is set (that is, whether or not the operation restriction executable state is set) (step S32). If the operation restriction flag is set, it is determined whether or not the operation state of the machine is in the work preparation state (step S33), and if it is in the work preparation state, the operation is restricted (step S35). In this way, when the operation restriction executable state with the operation restriction flag set and the operation state of the own machine is in the work preparation state, the operation restriction target for which the operation restriction flag is set is restricted. is executed.

In this embodiment, if the non-connection flag is set in step S31, that is, if the communication unit 13 is not connected to the machine itself, regardless of whether the machine is in the work preparation state or not. , the traveling section 11 and/or the working section 12 are restricted (step S35). Therefore, even if a malicious user removes the communication unit 13 in order to avoid the operation restriction, the operation of the traveling unit 11 and/or the working unit 12 is restricted regardless of the operating state of the machine itself. This prompts the user to connect the communication unit 13 and prevents unauthorized use.

On the other hand, as in the modified example shown in FIG. 8, even if the disconnection flag is set in step S31, there may be room for determining whether or not the work preparation state is present. That is, when the communication unit 13 is not connected to the machine itself and the operation state of the machine is in the work preparation state, the movement of the traveling part 11 and/or the work part 12 is restricted, and the communication unit 13 is not connected to the machine itself and the operating state of the machine itself is not in the work preparation state, it may be configured such that movement restriction is not executed for the traveling part 11 and the working part 12 . As a result, since the operation restriction is not executed unless it is in the work preparation state, it is possible to change the position and posture of the own machine when the communication unit 13 is removed for repair or the like while preventing illegal use.

In the example of FIG. 8, it is determined whether or not the maintenance flag is set (step S36), and if the maintenance flag is set, the operation is limited according to the determination result of whether or not the work is ready. (Steps S33 to S35), and if the maintenance flag is not set, the operation is always limited (Step S35). A maintenance flag is set according to a predetermined operation by a service person and cannot be set by a general user. Therefore, when the user removes the communication unit 13, the operation is always restricted (constantly restricted). is restricted (partially restricted). In this manner, it may be possible to set either constant restriction or partial restriction depending on whether or not the maintenance flag is set.

If the operation restriction flag is not set in step S32, the operation restriction is not executed (step S34) because the operation restriction is not executable in the first place. Further, even if the operation restriction flag is set, the operation restriction is not executed if the operation state of the own machine is not the work preparation state (steps S33 and S34). As described above, in the combine 1 of the present embodiment, even if it is in the operation restriction executable state, when the operation state of the own machine is not the work preparation state, the operation restriction is not executed for the traveling unit 11 and the working unit 12. is configured as Therefore, when the combine harvester 1 is in a dangerous place or in a dangerous posture, the safety can be ensured by changing the position and posture of the own machine.

The combine harvester 1 includes an operating tool for switching on/off power of the engine 32 to the working unit 12 . Specifically, a reaping clutch operating tool 36 for switching on/off power to the reaping unit 14 and a discharge clutch operating tool 37 for switching on/off power to the discharge auger 31 are provided. When power is transmitted to the working unit 12 by operating such an operating tool, it is considered that the user intends to use the combine harvester 1 for work. Therefore, in the present embodiment, according to the switching operation of the operation tool for transmitting the power of the engine 32 to the working unit 12, for example, the "on" operation of the reaping clutch operation tool 36 or the discharge clutch operation tool 37, The control unit 40 is configured such that the operating state is the work preparation state.

It is also possible to determine whether or not the operating state of the self-machine is in the work preparation state based on not only the switching operation of the operating tool as described above, but also other indices. For example, the engine speed is detected, and if it exceeds a predetermined speed, it is determined that the work is ready, otherwise (for example, if it is idle speed), it is determined that the work is not ready. good too. Alternatively, if the position of the combine harvester 1 according to the satellite positioning information is in the field, it is determined that the work preparation state is in effect, or if a sub-transmission operating device (sub-transmission lever) (not shown) is switched to the work speed, it is determined that the work preparation state is in effect. It is also possible to judge

As a specific example of restricting the operation of the working portion 12, it is conceivable to restrict the descent of the reaping portion 14 to substantially prohibit the reaping work. On the other hand, from the viewpoint of ensuring safety, it is preferable not to limit the upward movement of the reaping part 14 required for the movement of the combine harvester 1 . Also, it is desirable not to automatically raise the reaping unit 14 that is in the lowered position at the time when the motion restriction is executed. However, it is not limited to this, and both lowering and raising of the reaping unit 14 may be restricted. The operation of the reaping elevating cylinder 26 is controlled by the reaping ECU 41 of the control unit 40 so that the operation of the reaping unit 14 is limited.

Another specific example of restricting the operation of the working unit 12 is to restrict the ON operation of the ejection clutch for transmitting power to the ejection auger 31 and to prohibit the culm ejection operation. Alternatively, the operation of discharging the culms may be substantially prohibited by restricting the turning and raising and lowering of the discharging auger 31 . The operation of the discharge clutch motor 52 or the auger swing/lift motor 53 is controlled by the auger ECU 42 of the controller 40 so that the operation of the discharge auger 31 is limited.

As a specific example of restricting the movement of the traveling portion 11, it is conceivable to limit the travel speed of the combine harvester 1 by adjusting the opening degree of the straight proportional valve 55. FIG. Alternatively, the movement of the combine harvester 1 itself may be restricted (stopped) by disabling the direct proportional valve 55 . The operation of the linear proportional valve 55 is controlled by the HST ECU 43 of the control unit 40 so that the movement of the traveling unit 11 is restricted.

Another specific example of restricting the movement of the traveling unit 11 is to limit the function of horizontal control (UFO) and tilt the aircraft to the extent that it does not pose a danger but makes the work difficult. Alternatively, automatic horizontal control may simply be disabled by disabling the UFO valve 57 . The UFO valves 57 located on the left and right sides are controlled by the UFO ECU 44 of the control unit 40 so that the movement of the traveling unit 11 is restricted.

Although it is different from the above-described operation restriction that is executed when the operation restriction executable state is in the work preparation state, in a special situation such as when the combine harvester 1 is stolen, the control information by the communication unit 13 is transmitted. Engine 32 can be deactivated based on acquisition or non-acquisition. Such control of the engine 32 is performed by the engine ECU 45 of the control unit 40 .

[Second Embodiment Concerning Operation Limitation of Combine Harvester]
Next, 2nd Embodiment regarding the operation|movement limitation of the combine 1 is described. In the second embodiment, a specification (mechanical specification) for restricting the operation based on the mechanism of the combine harvester 1 is shown. FIG. 9 shows a circuit for limiting the motion of the reaping unit 14. As shown in FIG. A similar electric circuit is provided for each operation restriction target. The mechanical specifications described in the second embodiment may be applied in combination with the electrical specifications described in the first embodiment. For example, it is possible to limit the operation of the reaping unit 14 by mechanical specifications, and to limit the operation of other objects by electrical specifications.

The circuit shown in FIG. and a reaping lowering valve 63 for actuating the reaping lift cylinder 26 to lower it. In addition, a descent limit relay 64 and a temporary release switch 65 are added to this circuit to limit the descent of the reaping unit 14 . The communication unit 13 attached to the combine 1 is electrically connected to the descent limit relay 64 and the temporary release switch 65 .

In the present embodiment, as in the first embodiment, the operation state changes to the work preparation state in response to the "on" operation of the reaping clutch operation tool 36 for transmitting the power of the engine 32 to the reaping unit 14 . The temporary release switch 65 is switched on/off in conjunction with the operation of the reaping clutch operation tool 36 . When the reaping clutch operation tool 36 is turned on to enter the work preparation state, the temporary release switch 65 is opened and turned off (OPEN). When the reaping clutch operating tool 36 is not in the work preparation state by the "off" operation, the temporary release switch 65 is closed and turned on (CLOSE).

When the reaping work is normally enabled without restricting the operation of the reaping unit 14, the wire 67 is connected to the ground via the contact 13p of the communication unit 13 as shown in FIG. By operating the relay 64, the wiring 66 is connected to the reaping lowering valve 63, and the reaping unit 14 can be lowered.

On the other hand, when restricting the operation of the reaping unit 14, the contact 13p is in an open state (OPEN) as shown in FIG. This state corresponds to an operation restriction executable state in which operation restriction on the reaping unit 14 can be performed. When the machine is in the operation limit executable state and the machine is in the work preparation state, the wire 67 is not connected to the ground because the temporary release switch 65 is off, and the descent limit relay 64 operates. do not do. As a result, the connection between the wiring 66 and the reaping lowering valve 63 is broken, and the lowering of the reaping part 14 is restricted. On the other hand, even in the operation limit executable state, when the operation state of the machine is not the work preparation state, the wire 67 is connected to the ground by turning on the temporary release switch 65, and the descent limit relay 64 is turned off. Operate. As a result, the wiring 66 is connected to the reaping lowering valve 63, and the reaping part 14 can be lowered, and the operation restriction of the reaping part 14 is not executed.

In this embodiment, the contact 13p is also opened (OPEN) by removing the communication unit 13 . Therefore, when the communication unit 13 is not connected to the combine harvester 1 and the operating state of the own machine is the work preparation state, the wiring 67 is not connected to the ground, so the descent limit relay 64 does not operate and the reaping unit 14 , the descent of is restricted. Further, when the communication unit 13 is not connected to the combine harvester 1 and the operating state of the own machine is not the work preparation state, the wire 67 is connected to the ground through the temporary release switch 65, so that the descent limit relay 64 is operation and the descent of the reaping part 14 is not restricted.

Although an example of restricting the descent of the reaping unit 14 is shown in the present embodiment, the present invention is not limited to this. Other specific examples of restricting the operation of the working unit 12 include restricting both the lowering and ascending of the reaping unit 14 and restricting the swiveling and ascending of the discharge auger 31 . Further, as a specific example of the operation restriction for the traveling portion 11, the movement of the combine harvester 1 is restricted (stopped) by disabling the straight proportional valve 55, or the function of the UFO is restricted by disabling the UFO valve 57. It is conceivable to

In FIG. 11, the communication unit 13 is connected via a contact 13p to a reaping limit relay 71 (for example, the aforementioned lowering limit relay 64) for limiting the operation of the reaping unit 14. In FIG. Similarly, the contacts 13q to 13s are respectively connected to an ejection auger limiting relay 72 for limiting the operation of the ejection auger 31, an HST limiting relay 73 for limiting the operation of the HST, and a UFO limiting relay 74 for limiting the operation of the UFO. is Although not shown, each of these circuits is provided with a temporary release switch as shown in FIGS. When the communication unit 13 is removed, each of the contacts 13p to 13s is in an open state (OPEN).

According to such a configuration, the contact to be in the open state (OPEN) is selected based on the operation restriction target information included in the control information, and the operation restriction is executed for the operation restriction target corresponding thereto. In this way, by using the plurality of contacts 13p to 13s of the communication unit 13, it is possible to selectively execute operation restriction targets for the traveling unit 11 and the working unit 12 based on the operation restriction target information included in the control information. is. In this embodiment, a fuel stop relay 75 relating to restriction of fuel supply to the engine 32 is connected to the contact 13t, and based on whether or not the control information is acquired by the communication unit 13, the fuel supply is restricted and the engine 32 is stopped. It is also possible to deactivate the function.

[others]
In the above-described embodiment, an example in which the work vehicle is a self-discharge combine harvester is shown, but the work vehicle is not limited to this, and may be a normal combine harvester. Moreover, the work vehicle is not limited to a combine harvester, and may be an agricultural machine such as a tractor or a rice transplanter. In a tractor, a rotary tiller as a working unit can be subject to movement restrictions. In the rice transplanter, the operation of the seedling planting machine as a work unit can be restricted. Furthermore, the working vehicle is not limited to agricultural machinery, and may be construction machinery such as a hydraulic excavator.

The present invention is by no means limited to the above-described embodiments, and various improvements and modifications are possible without departing from the scope of the present invention.

1 combine harvester 2 management server (operation management device)
5 Contractor device (operation restriction request device)
10 operation restriction system 11 running unit 12 working unit 13 communication unit (communication unit)
14 Reaping part 17 Storage part 20 Crawler 21 Transmission 26 Reaping elevating cylinder 31 Discharge auger 32 Engine 36 Reaping clutch operation tool 37 Discharge clutch operation tool 40 Control part 50 Drive part

Claims (6)

A traveling unit, a working unit, a communication unit that receives control information regarding operation restrictions of the traveling unit and the working unit, and an engine ,
Based on whether the control information is acquired or not acquired by the communication unit, an operation restriction executable state is entered in which operation restriction can be executed for the traveling unit and/or the working unit,
When the operation restriction executable state is set and the operation state of the machine is the work preparation state, the operation restriction is performed on the traveling unit and/or the working unit,
Even in the operation restriction executable state, when the operation state of the machine is not the work preparation state, the operation restriction is not performed on the traveling unit and the working unit ,
A work vehicle , wherein a motion limit for the traveling part and/or the working part is different from the control of the engine . When the communication unit is not connected to the machine itself, regardless of whether or not the operation state of the machine is the work preparation state, the movement of the traveling unit and/or the working unit is restricted. The work vehicle according to claim 1, wherein the work vehicle is configured to: When the communication unit is not connected to the machine itself and the operation state of the machine is in the work preparation state, operation restriction is performed on the traveling unit and/or the working unit,
2. When the communication unit is not connected to the machine and the operating state of the machine is not the work preparation state, the movement of the traveling unit and the working unit is not restricted. Work vehicle described in . 4. The work vehicle according to any one of claims 1 to 3, wherein the work vehicle is configured to be able to selectively execute an operation restriction target for the traveling unit and the working unit based on operation restriction target information included in the control information. . An operation tool for switching on and off power of a drive source for the working unit,
The work vehicle according to any one of claims 1 to 4, wherein the operating state of the work vehicle changes to a work preparation state in response to a switching operation of the operation tool for transmitting the power of the drive source to the work unit. A motion restriction system for a work vehicle, comprising: the work vehicle according to any one of claims 1 to 5; and a motion management device that outputs the control information to the communication unit.

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