JP2008080982A - Antitheft device for working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antitheft device capable of securely taking antitheft measures for a working vehicle by a simple operation and having a simple configuration without causing problems about cost and handling related to use of a specific duplicate key difficult to duplicate and about handling of confidential information by using a password etc. or other problems. <P>SOLUTION: The antitheft device for the working vehicle comprises control parts C1, C2 for applying antitheft control for suppressing subsequent functions of traveling system equipment in accordance with predetermined set information when the power is turned on in regard to the working vehicle having a plurality of switches 33a to 34e for equipment operation. When the antitheft control is "not applicable" based on the set information, provided that an ON signal of at least one of the plurality of switches 33a to 34e is received when the power is turned on, the control parts C1, C2 change the set information so that the antitheft control is "applicable". <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antitheft device for a work vehicle that suppresses the function of a traveling system device of the airframe in order to prevent the work vehicle from being stolen.

  In general, with respect to work vehicles, a common engine key is used to improve the efficiency of operation of various devices in field work or the like. In addition, there is a system in which a new password (reciting number) is generated at any time and recorded on the aircraft side and the key side, and the aircraft can be operated on condition that both match.

The system of this anti-theft device can prevent theft by duplication of duplicate keys due to the difficulty of duplicating with a password that is changed from time to time, and problems related to the handling of confidential information such as forgetting passwords and leaking information due to their locks Without being bothered by this, the anti-theft measure can be reliably implemented by a simple key operation.
JP 2006-35977 A

  However, since the above system requires a specially configured key that can rewrite the password, the problem of cost burden is unavoidable, and when the operator leaves the work vehicle, the key is Since it is necessary to always carry it with care and careful handling of the loss is necessary, management inconvenience has not been eliminated.

  It is an object of the present invention to provide a work vehicle with a simple operation without being bothered by costs and handling problems due to the use of a special key that is difficult to duplicate and problems with handling confidential information such as passwords (reciting numbers). It is an object of the present invention to provide an antitheft device having a simple configuration capable of reliably implementing the antitheft measures.

  The invention according to claim 1 provides anti-theft control for a work vehicle including a plurality of switches (33a to 34e) for device operation, which suppresses the function of the travel system device thereafter according to predetermined setting information when the power is turned on. In the work vehicle antitheft device comprising the control units (C1, C2) to be applied, the control units (C1, C2) are configured to switch the plurality of switches when the antitheft control is “non-applicable” according to the setting information. The setting information is set to “application” of the antitheft control on condition that at least one ON signal of (33a to 34e) is received when the power is turned on.

  When the machine power is turned on, whether the anti-theft control is applied or not is processed by the control unit according to the predetermined setting information. When the setting information is “applied”, the anti-theft control is applied after the power is turned on. When the function of the traveling system is suppressed, and when it is “Not Applicable”, the traveling system functions without suppression. In this case, one of the switches for operating the equipment is turned on. The setting information is changed to “apply” only when it is operated.

According to a second aspect of the present invention, in the configuration of the first aspect, the control unit (C1, C2) is a switch (33a to 34e) that is specified by an ON signal when “application” of the anti-theft control is set. The setting information is set to “Non-applicable” only when the identity of the combination of the switches (33a to 34e) specified by the newly received ON signal is determined based on the record of It is characterized by processing.
Even if the anti-theft control is applied by operating the above switches, the anti-theft control can be applied according to the setting information when the power is turned on with the same switch operation as when “Apply” is set. Canceled.

  According to a third aspect of the present invention, in the configuration of the first or second aspect, the control unit (C1, C2) forces the power transmission path by the traveling transmission system to be in a disconnected state by applying anti-theft control. Control processing is performed. Self-running is impossible due to the forced shut-off of the running transmission system.

  According to the configuration of claim 1, when the anti-theft control is not applied, the application of the anti-theft control is set by turning on the power while operating the switch, and the anti-theft control is executed for the next power-on. Securely implements anti-theft measures through simple operations without being bothered by the cost of handling a special key to prevent the theft and the problem of handling it, and the problem of handling confidential information using passwords (recitation numbers). can do.

  According to the second aspect of the present invention, when the power is turned on with the same switch operation as that at the time of setting, the application of the anti-theft control is canceled and the vehicle can be operated.

  According to the configuration of the third aspect, the traveling power transmission system is forcibly disconnected so that self-running is impossible and a theft prevention function is ensured.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
An agricultural tractor as an example of a work vehicle to which the present invention is applied will be described.
As shown in FIG. 1, the agricultural tractor 1 includes a cabin 7 in a machine body including front wheels 2, 2 and rear wheels 3, 3, and a control unit is provided in the cabin 7. The engine 4 is mounted in a hood that covers the front portion of the aircraft, and the rotational power of the engine 4 is transmitted to the transmission gear transmission 5a in the transmission case 5, and the power that is appropriately decelerated by the transmission gear transmission 5a is transmitted to the front wheels 2. 2 and the rear wheels 3 and 3 and output to the working machine connected to a 3P link (not shown) that can be moved up and down via a PTO shaft (not shown).

(cabin)
In the cabin 7, as shown in the perspective view of FIG. 2, a pilot seat 7s is disposed at an upper position of the mission case 5 for operator operation, and an armrest 21 on one side of the pilot seat 7s and the outer side thereof. In addition to providing an operation panel device 22 to be described later, a parking brake 7b, PTO change levers 7c, 7d, etc. are arranged on the other side of the cockpit 7s to constitute an operation unit, and the vehicle moves forward and backward in the vicinity of the steering handle 11. Traveling operation tools such as a clutch pedal 11b, left and right brake pedals 11c and 11d, and an accelerator pedal 11e are arranged on the switching lever 11a. The steering post is provided with a meter panel M (described later) for displaying device information including a speedometer. The armrest 21 is provided with a work implement lift lever 21a, a work implement lift switch 21b, and travel shift switches 21c and 21d. An operation tool for work traveling such as is arranged.

(Operation panel device)
In order to improve operability, the operation panel device 22 is configured such that operation means such as a work machine, a traveling system, and an engine speed are concentrated on one side (right side in the illustrated example) of the cockpit 7s. An operating tool for controlling and operating the traveling system and working system equipment to be configured, and an operating console that supports these operating tools and is concentrated on one side of the cockpit 7s, and further includes a switch box 26a described later. Prepare.

  The console is composed of a flat base step portion 23 adjacent to the cockpit 7s, a middle step portion 24 that rises steeply from the back side, and an upper step portion 25 that gently leans from the upper end to the back height, Place the operation tool on That is, the upper surface is covered with an integral lever guide, and a flat portion 23 is provided near the cockpit 7s. The flat portion 23 is slightly inclined from the flat portion 23 at a position farther from the back seat than the flat portion 23. Is provided with an inclined portion 25 at a high position, and an arrangement surface is configured so that the inclined portion 25 and the flat portion 23 are connected by an inclined surface 24 having a tight inclination angle from the inclined portion. Arrange operating tools such as levers.

  In particular, the base step portion 23 and the middle step portion 24 close to the cockpit 7s are provided with electric operation tools such as switches, and the upper step portion 25 that is relatively far away is provided with an operation tool using levers that perform a stroke operation. Thus, operability according to the operation tool can be ensured.

(Base section)
The specific description of each operation tool of the operation panel device 22 is as follows.
In the base stage 23, operation switches for directly performing transmission and interruption of transmission power such as a PTO on / off switch, a PTO manual automatic switch, and a differential lock switch are arranged. Since these switches are simple on / off operations, the switches can be easily operated even in a relatively cramped posture with the arm bent.

(Middle section)
In the middle section 24, two engine speed storage switches, a draft ratio adjustment dial, a raising adjustment dial, a tilt adjustment dial, a 4WD changeover switch, a horizontal cylinder manual raising / lowering switch, and the like are arranged.

(Upper part)
A throttle lever 25a, sub-transmission lever 25b, sub-con levers 25c and 25d, an optional sub-con lever 25e are disposed on the upper stage 25 of the console, and a switch box 26a is disposed on the rear of the console.

(Switch box)
As shown in FIG. 3, the switch box 26 a is configured by providing a cover that can be opened and closed on a switch panel 31 that houses a plurality of switches. This is arranged to be inclined toward the operator of the cockpit 7s at the rear position of the console. The switch box 26a is configured to be compact with a small operation unit for functions that are used infrequently. The switch box 26a is located outside the operator's field of view when not used, and is disposed at a close position that can be operated from the cockpit 7s when used. By doing so, all functions can be operated from the cockpit 7s as needed by the user or by the work without hindering the normal work.

  The switch panel 31 has a comparatively large adjustment operation portion including two monitor lamps L and L as the work implement up / down display portion 32a, an AT shift work sensitivity dial 32b, a lowering speed dial 32c, and a brake adjustment dial 32d. In addition, the return type switch buttons by the momentary switches 33a to 33e and 34a to 34e of the control setting including the electrohydraulic control are arranged relatively closely together with the monitor lamp L.

  The work implement ascending / descending monitor lamp 32a displays the monitor in conjunction with the work implement raising / lowering output by lamps L, L such as two LEDs arranged vertically. A cover is formed of a translucent resin, and the cover can be monitored with the cover closed. This monitor is convenient for checking the effectiveness during a drafting operation or the like, and can be constructed at low cost by placing the LED on a substrate.

The AT shift work sensitivity dial 32b is a dial that automatically changes the sensitivity to increase or decrease the vehicle speed. When the AT shift work switch 33b disposed below is set to “ON”, automatic shift (ored drive) control is applied with the set sensitivity.
The lowering speed dial 32c adjusts the work implement lowering speed. Applicable when operating on the “fast” side (clockwise), the work equipment descends faster and the work equipment weight is light. Applicable when the work implement descends slowly when operated to the “slow” side (counterclockwise) and the work implement weight is heavy.
The brake adjustment dial 32d adjusts the braking force that is applied when the auto brake switch 33e is “ON” (the left is weak and the right is strong).

Further, for each of the control setting switches 33a to 33e and 34a to 34e for the electrohydraulic control, the switch button B and the monitor lamp L thereof are arranged correspondingly.
When the AT shift road switch 33a is set to “ON”, it automatically shifts (auto-drives) when traveling on the road.
When the AT shift work switch 33b is set to “ON”, it automatically shifts (auto-drives) during work travel.
When the backup on / off switch 33c is set to “ON”, the work implement rises in conjunction with the reverse operation.
When the auto-lift on / off switch 33d is set to “ON”, the work implement is raised in conjunction with the steering wheel operation when the machine is turning.
When the auto brake on / off switch 33e is set to “ON”, only the rear wheel on the inside of the turn is braked in conjunction with the operation of the steering wheel during turning.

The connection sensitivity shift switch 34a changes connection feeling when the main shift is shifted by turning on and off. “On” (monitor lit) makes a gentle shift, and “Off” (monitor off) makes a quick connection. When used in a traction system such as a plow, the connection time during the main speed change operation is shortened.
The connection sensitivity PTO switch 34b switches how PTOs are connected. “Rotary” speeds up PTO connections. When the PTO starts to rotate, it immediately turns with a rotational force that does not lose the resistance of the soil, so it is mainly used in tillage machines such as rotary. “Grass 1” and “Grass 2” have a slow PTO connection (two shifts). Mainly used for work machines that slowly connect PTO, such as pasture work machines and snow blowers.

The horizontal sensitivity switch 34c switches the operation sensitivity of the automatic horizontal control device. Pressing the switch slows down the automatic horizontal control, and pressing it again restores it.
The horizontal changeover switch 34d performs horizontal control of the work machine. “Auto level” automatically maintains level by a level sensor. “Manual” is for manual adjustment by the tilt adjustment dial 24e. “Parallel” always makes the 3P link parallel to this machine. “Slope” gives a certain angle to the ground.
The 3P changeover switch 34e selects 3P changeover of the electrohydraulic operation box by selecting a lift cylinder mounting hole. “1” is selected for category 1 work machines (when attached to the front hole of the lower link), and “2” is selected for category 2 work machines (when attached to the rear hole of the lower link).

Each of the above control setting switches 33a to 33e and 34a to 34e can easily grasp the failure (short circuit) of the switch by controlling the lighting of the monitor only when the switch is on during the check mode state in the equipment operation maintenance. can do.
For example, during normal control, the monitor turns on and off in response to the switch operation. If the monitor does not turn on even when the switch is pressed, it is not possible to determine whether the switch or the monitor is faulty. It is easy to determine the site of failure (switch, monitor) by using a configuration that lights only when is on. Only changes in the switch can be confirmed on the instrument panel.

  Also, the transition to the check mode is made on condition that the predetermined fuse is removed.In this machine, the control is performed by the setting of the operation panel before the transition to the check mode. By adopting a control configuration that does not switch the traveling system, it is possible to prevent unexpected movement of the device.

  In this case, if the setting state is stored in the non-volatile memory of the control system controller, that value is used. If the setting state is stored in the non-volatile memory of the operation panel itself, that value is used. By doing so, it is possible to prevent unexpected movement of the device.

(Meter panel)
As shown in the sketch diagram of FIG. 4, the meter panel M constitutes a monitor that displays operation statuses of various devices with lamps in addition to the engine tachometer 41 at the center position.
Specifically, the left and right blinker lamps 42 and 42b at the upper edge, a warning light 42c that follows to the right, a differential lock indicator light 42d, an AT shift work indicator lamp 43a and a road indicator lamp 43b, Auto lift indicator light 44a, auto brake indicator light 44b, backup indicator light 44c, PTO indicator light 44d, lift lamp 44e, auto accelerator indicator light 44f, accelerator memory work A indicator light 44g, work B indicator light 44h, right side As the main shift position, vehicle speed, fuel and water temperature display by the composite display liquid crystal display 45, and the travel system display below the main shift position, the 2WD lamp 46a, the 4WD lamp 46b, the sudden turn indicator lamp 46c, the parking brake indicator lamp 46d, the brake pedal An unconnected warning light 46e and the like are arranged.

(Anti-theft device)
The anti-theft device applied for the purpose of preventing the theft of a work vehicle having various operating devices and a display unit as described above will be described in detail.
As shown in FIG. 5, the anti-theft device is configured by both control units C <b> 1 and C <b> 2 related to 3P lifting and lowering and processing related to the application of anti-theft control.
The anti-theft control units C1 and C2 receive, on their input side, an operation signal from the switch panel 31 of the switch box 26a having a plurality of momentary switches for device operation, and a predetermined setting upon power-on. The application of the subsequent anti-theft control is processed according to the information, and the driving power transmission control units 51a to 51c for suppressing the function of the traveling system device by the anti-theft control on the output side, and the display accompanying the anti-theft control process are performed. Connect a meter panel M as a monitor.

As shown in the flowchart of FIG. 6, the control processing of the anti-theft by the control units C1 and C2 includes a check of multiple switch operations at power-on (S1) and a mode check process during anti-theft control (S2). )do.
If bit 0 is not applicable by this mode check process (S2), anti-theft control start (S3a) and anti-theft mode bit set process (S3b) are performed. The on / off of the anti-theft control by the bit processing in the anti-theft mode is stored in the EEPROM which is not erased even when the power is turned off or the battery is removed.
If the corresponding bit is 1 by the mode check process (S2), the anti-theft control release process is performed only when the same plurality of switches are turned on when the anti-theft mode is entered by the switch verification check process (S4). (S5a) and anti-theft mode bit reset processing (S5b). If the switch verification check process (S4) is not applicable, the anti-theft mode is maintained as it is.

  By the above control process, the control unit is configured so that when the setting information (theft prevention mode bit) is “non-applicable” (reset) of the theft prevention control, at least two of the plurality of momentary switches (the number of switches is large). The setting information is subjected to setting change processing to “apply” on the condition that the ON signal of 1 may be received when the power is turned on.

  With this control process, when the aircraft is turned on, whether the anti-theft control is applied or not is processed by the control unit in accordance with the predetermined setting information. In the case of “Non-applicable”, the traveling system device functions without suppression. In this case, any one of a plurality of momentary switches for operating the device If it is operated when the power is turned on, the setting information is changed to “apply”.

  Therefore, if the anti-theft control is not applied, the anti-theft function is set so that the anti-theft control will be performed for the next power-on by turning on the power while the switch is operated, making it difficult to copy The anti-theft measures can be reliably implemented by a simple operation without incurring the problem of cost and handling due to the use of a special special key and the problem of handling confidential information using a password.

In addition, the control unit determines the identity of the combination of momentary switches specified by the newly received ON signal based on the record of the momentary switch specified by the ON signal when “Apply” is set. If the result is the same, the setting information is changed to “Non-applicable” to change the setting information, even when under theft prevention control, when the power is turned on with the same switch operation as at the time of setting. As long as the application of the anti-theft control is cancelled, the traveling system device functions without restriction.
Further, since the switch combination operation can be performed with one hand on the switch panel 26a where a large number of switches are concentrated, it is possible to easily and easily set and reset theft prevention while operating the key switch.

Next, device operation in the anti-theft mode will be described.
In the anti-theft mode in which the anti-theft control is “ON”, as shown in the flowchart of FIG. 7, the function suppression of the traveling system device (S11) and the abnormality notification are performed from the power-on by the key switch to the release of the anti-theft mode. Control processing of (S12-S14) and traveling load (S15) is performed.

  That is, the function suppression (S11) of the traveling system equipment is performed even when the engine is forcibly started by the non-boosting of the forward / reverse clutch by the reverse clutch output prohibiting process and the double biting control process of the main shift. The function of the traveling system equipment is suppressed by blocking the power transmission of the system and by preventing the towing movement of the airframe while using power steering, and the wheel traveling is disabled by any operation.

  The abnormality notification (S12 to S14) informs the operator that the anti-theft control has been entered through a display that is clearly different from the normal display process by fully turning on the LED on the switch panel (S12) or flashing all the way, and a buzzer sounding process (S13). ) Is effective in suppressing theft by conceiving the theft actor and suppressing the act and making it possible to cope with abnormal situations by grasping from the outside, and the liquid crystal unit 45 of the meter panel M is all effective. The operator can be instantly notified of the anti-theft mode by turning on or flashing all (S14).

  The travel load process (S15) is a control process for stopping the lifting output and braking output. The lifting output is stopped by using the traction load by the work machine that is grounded to the ground to counter the traction movement of the aircraft and performing brake output for models that have an engine suppression control function during turning, The movement of the aircraft can be effectively prevented.

(Example of cancellation)
Next, another control example for canceling the antitheft control will be described.
As shown in the flowchart of FIG. 8, the anti-theft control is canceled on the premise that the main shift initial adjustment is started, and when the main shift initial adjustment mode condition (S21) is satisfied, the anti-theft control bit is “1”. ", The antitheft mode is canceled together with the buzzer continuous sounding (S22, S23a), and if not applicable, the initial adjustment operation of the main shift is performed as the original process (S23b).

  In the above-described control process, it is possible to manage the airframe operating characteristics by factory shipment inspection by maintaining the main shift reference value as it is in the anti-theft mode release process (S23a). Moreover, abuse of the release operation can be suppressed by the pressure effect of buzzer sound.

  As described above, in addition to the switch operation described above, the same operation as the main shift initial adjustment performed at the time of shipment from the factory is applied as a method for canceling the anti-theft control, and the main shift initial adjustment and the like are in charge of maintenance. Therefore, it is possible to prepare for a case where the operator forgets to combine the switches.

It is a body side view of an agricultural tractor. It is a principal part top view in a cabin. It is a panel sketch of a switch box. It is a sketch of a monitor. It is a system configuration | structure of an antitheft device. It is a flowchart of control processing of start and cancellation of the anti-theft mode. It is a flowchart of apparatus operation | movement of a theft prevention mode. It is another flowchart which cancels | releases an antitheft mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural tractor 2 Front wheel 3 Rear wheel 4 Engine 5a Shift transmission part 7s Pilot seat 26a Switch box 31 Switch panel 33a-34e Control setting switch 51a-51c Traveling power transmission control part B Switch button C1, C2 Control part (theft prevention device)
L Monitor lamp M Meter panel (monitor)

Claims (3)

For a work vehicle including a plurality of switches (33a to 34e) for device operation, a control unit (C1, C1) that applies and applies anti-theft control that suppresses the function of the traveling system device in accordance with predetermined setting information when the power is turned on. In the antitheft device for work vehicles consisting of C2),
The control unit (C1, C2) receives at least one ON signal of the plurality of switches (33a to 34e) when the power is turned on when the anti-theft control is “non-applied” based on the setting information. On the condition that the above setting information is set to “application” of the anti-theft control, an anti-theft device for a work vehicle.   The control unit (C1, C2) is specified by the newly received ON signal based on the record of the switch (33a to 34e) specified by the ON signal when “application” of the anti-theft control is set. 2. The work vehicle according to claim 1, wherein the setting information is set to “non-applicable” only when the identity of the combination of the switches (33 a to 34 e) is determined and the result is the same. Anti-theft device.   The work according to claim 1 or 2, wherein the control unit (C1, C2) performs control processing for forcibly disconnecting the power transmission path by the traveling transmission system by applying anti-theft control. Vehicle anti-theft device.

Images