JP4794617B2 - Anti-theft device for construction machinery - Google Patents

Description

  The present invention relates to an antitheft device for a construction machine such as a hydraulic excavator.

  A construction machine such as a hydraulic excavator is generally provided with an anti-theft device that prohibits the operation of the machine when the machine is not operating and releases the prohibited state when the machine is started. For example, the anti-theft device described in Patent Document 1 is provided with a numeric keypad input device, and when a password is input from the numeric keypad input device and collation by the password is matched, the prohibited state of the construction machine operation is canceled and the engine Start is possible. The anti-theft device described in Patent Document 2 is provided with a communication device, and when a password is input via this communication device and the collation by the password matches, the prohibited state of operation of the construction machine is canceled and the engine is started. It becomes possible.

  By the way, in recent years, the actual state of operation of construction machines such as hydraulic excavators has become the mainstream in which rental companies purchase large quantities and lend them to customers who perform civil engineering work as necessary. In this case, the rental company wants to centrally manage the security of multiple construction machines as an administrator, while the operator as the customer wants to escape the trouble of security management that requires entering a PIN at the start of work. I think. Against this background, a communication device is provided in the anti-theft device, the administrator sets the lock start time and unlock time at the administrator terminal, and sends a setting command to the communication device provided in the anti-theft device Then, Patent Document 3 discloses an antitheft device that receives a setting command and enters a locked state (prohibited state) that prohibits the operation of the construction machine in a specific time zone (from the set lock start time to the lock release time). Has been.

  Further, in Patent Document 3, the starter lock time and the unlock time are set by the administrator in order to respond to the occasional change according to the work situation, and a setting command is transmitted to the communication device provided in the antitheft device Then, an antitheft device has been proposed that receives a setting command to place the construction machine in a locked state, and further repeats reception of the setting command until the unlocking time immediately before the start lock time elapses.

JP-A-9-50584 JP 2005-255094 A JP 2003-34232 A

  However, since both the antitheft devices described in Patent Document 3 set a time zone (from the start time to the release time) during which the machine operation is prohibited, the work does not proceed as planned. The following problems arise: For example, when the work is completed earlier than scheduled, the lock is not performed until the set lock start time, and the security is lowered. To change the lock start time on the administrator side, the administrator sends a setting command after receiving notification from the operator about the end of work, so there is a time lag between the end of work and the transmission of the setting command. The problem that security is reduced due to the state is not solved. Further, when the operator needs to notify the administrator of the completion of work every time work is completed, the operator feels troublesome in security management. In addition, the above-described problem that the unlocked state continues and the security is lowered occurs even if the operator has not properly communicated the completion of work from the operator.

  In addition, the operator automatically entered the unlocked state at the unlocking time, and the operator was scheduled to start the work.However, if the work was canceled or delayed due to changes in the weather, etc., the unlocked state Continuing, the above-mentioned problem that security is lowered arises. Further, when the operator needs to notify the administrator of work suspension every time work is stopped, the operator feels troublesome in security management.

  On the other hand, the construction machine is stopped at every short break such as a lunch break during construction. When the construction machine is stopped and the power is turned off, the anti-theft device described in Patent Document 1 or Patent Document 2 clears the identification state of the personal identification number, and the personal identification number is used to resume the work and restart the construction machine after a brief pause. The operator needs to input the number again, and the operator feels troublesome in security management. The anti-theft device described in Patent Document 3 described above maintains the unlocked state once unlocked, so that the operator does not feel bothered by security management. However, when the short break becomes longer than planned or the work after the short break is canceled due to a change in the situation, the above-described problem that the unlocked state continues and the security is lowered occurs.

  A first object of the present invention is to provide a construction machine anti-theft device capable of ensuring security without annoying an operator and without being affected by a change in work schedule.

  The second object of the present invention is to provide a construction machine anti-theft device which can be managed by a manager by remote control.

  (1) In order to achieve the first object, the present invention provides an antitheft device for a construction machine that prohibits starting of the machine by prohibiting the operation of the machine when the machine is in a non-operating state. An information input means for inputting information for releasing the prohibited state of operation of the machine, and a prohibition release time for releasing the prohibited state of operation of the machine based on the information input by the information input means. After that, until the prohibition release time elapses, the prohibition state of the operation of the machine is canceled and the machine can be started. Once the machine is started, the cancellation of the prohibition state is maintained. Machine operation control means.

  In the present invention configured as described above, an information input unit and a machine operation control unit are provided, and based on the input information, a prohibition release time for canceling the prohibition state of the machine operation is set and Only until the release time elapses, the prohibited state of the machine operation is canceled and the machine can be started. That is, until the information for canceling the prohibition state of the machine operation is input from the outside, the operation of the machine is prohibited state, so that the operator does not feel the trouble of security management before starting work. Security can be secured without being affected by changes in work schedules.

  Also, until the prohibition release time elapses, the prohibition state of the machine operation is canceled and the machine can be started, so that the operator can start the machine without feeling the trouble of security management. be able to.

  Furthermore, once the machine is started, the release of the prohibited state is maintained, so that the operation of the machine can be continued without causing the operator to feel the trouble of security management.

  On the other hand, when the prohibition release time elapses, the machine operation is automatically disabled. As a result, even if the work is canceled or delayed, or even if the work is completed earlier than scheduled, the operator will not feel bothered by security management and will not be affected by changes in the work schedule. It can be secured.

  As described above, according to the present invention, security can be ensured without the operator feeling troublesome in security management and being affected by changes in work schedules.

  (2) In the above (1), preferably, the machine operation control means, when the machine is once started and the release of the prohibited state is maintained, the prohibition release time when the operation of the machine is stopped thereafter. Until the prohibition release time elapses, the release of the prohibition state is maintained and the machine can be started. When the prohibition release time elapses, the operation of the machine is prohibited.

  Thereby, the operator can start the machine again without feeling the trouble of security management. In addition, when the prohibition release time elapses, the machine operation is automatically prohibited, so if the machine operation stops, the brief pause becomes longer than planned or the work after the pause is canceled However, security can be ensured without the operator feeling bothered by security management and being affected by changes in work schedules.

  (3) In the above (2), preferably, the information input means includes a display device for displaying a prohibition release time clear screen when the operation of the machine is stopped, and the machine operation control means includes the When the prohibition cancellation time clear screen is operated, the operation of the machine is again prohibited even during the period until the prohibition cancellation time elapses.

  Thereby, even before the prohibition release time elapses, the operator can be surely ensured security without feeling troublesome of security management and without being affected by a change in work schedule.

  (4) In the above (1) or (2), preferably, the information input means stores a collation information and a cancellation valid time in association with each other, and collation information (password or password) input from the outside. Identification information (telephone number)) and collation means for comparing the collation information stored in the storage unit, and the machine operation control means stores the memory when the collation information compared by the collation means matches. The cancellation effective time corresponding to the verification information stored in the section is set as the prohibition cancellation time.

  Thereby, it is possible to set the prohibition release time for canceling the prohibition state of the machine operation.

  (5) In the above (4), preferably, when the collation information compared by the collation means matches, the machine operation control means stores the release effective time corresponding to the collation information stored in the storage unit. The prohibition release time measuring means for setting the prohibition release time and measuring the passage of the prohibition release time, and when the prohibition release time has elapsed, the prohibited state of the machine operation is canceled and the prohibition release time has elapsed. Machine operation permission / prohibition control means for prohibiting the operation of the machine again.

  As a result, the machine operation can be released and the machine can be started only until the prohibition release time elapses.

  (6) In order to achieve the second object, in the above (4), preferably, the information input means inputs the verification information and the release valid time via a wireless communication network, and the input verification information And the release effective time are associated with each other and stored in the storage unit, and when the verification information and the release effective time are stored in the storage unit, the verification information and the release effective time are updated. It further has setting means.

  Thereby, the administrator can perform security management by remote operation.

  (7) In the above (4), preferably, the information input means includes a display device provided in a cab of a construction machine and a password as the input information when the prohibition release time is not set. A personal identification number input screen display means for displaying a personal identification number input screen for input on the display device;

  Thus, when the passwords match, the cancellation effective time corresponding to the password can be set as the prohibition cancellation time.

  (8) In the above (4) or (7), preferably, the information input means further includes a mobile phone receiver for inputting identification information transmitted from a mobile phone as the input information.

  Thereby, when the identification information matches, the cancellation effective time corresponding to the identification information can be set as the prohibition cancellation time. In addition, the administrator can manage security by remote control.

  (9) In the above (8), preferably, the identification information transmitted from the mobile phone as the input information is mail information, and the information input means is attached to the mail information and transmitted from the mobile phone. The transmission date information is compared with the internal date information. If the date information is different, the transmitted identification information is ignored.

  Thereby, even if the machine is in a place where the mobile phone cannot communicate, it is possible to prevent the prohibition state of the machine operation from being canceled by mistake thereafter.

  According to the present invention, it is possible to ensure security without being bothered by an operator and without being affected by a change in work schedule. In addition, the administrator can manage security by remote control.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
~Constitution~
FIG. 1 is a diagram showing an overall system configuration to which a construction machine antitheft device according to a first embodiment of the present invention is applied.

  In FIG. 1, a construction machine antitheft device according to the present embodiment is installed in a driver's seat of a hydraulic excavator 1 which is a typical example of a construction machine. The anti-theft device 3 has a communication device (described later), and can receive mail from the mobile phone 5 of the rental company who is the administrator of the hydraulic excavator via the public line network 4 and uses the hydraulic excavator. The mail from the mobile phone 6 of the operator can be received.

  FIG. 2 is a diagram showing a main configuration of the excavator 1. The excavator 1 includes an engine control system and a vehicle body control system.

  In the engine control system, the engine controller 11 inputs a command signal of the key switch 12, performs a predetermined calculation, and outputs the calculation result to the electronic governor 13a and the starter 13b, thereby controlling the start and stop of the engine 13. . The engine controller 11 also receives a command signal from the engine control dial 14 and a detection signal from the engine speed sensor 15, performs a predetermined calculation, and outputs the calculation result to the electronic governor 13a. Control number and torque.

  In the vehicle body control system, the vehicle body controller 21 electronically controls the hydraulic system of the hydraulic excavator, and the hydraulic system controls the front device and the like of the hydraulic excavator by oil discharged from a hydraulic pump (not shown) driven by the engine 13. Drive control is performed. Further, the vehicle body controller 21 inputs an ON / OFF signal of the gate lock switch 22, performs a predetermined calculation, and outputs a control signal to the gate lock valve 23. The driver's seat of the hydraulic excavator 1 is provided with a gate lock lever (not shown) that is selectively operated at a position that restricts the entrance of the driver's seat (unlock position) and an opening position (lock position). When the lock lever is in the locked position, the gate lock switch 22 outputs an OFF signal, and the vehicle body controller 21 operates the gate lock valve 23 to shut off the communication of the pilot pressure, thereby invalidating the operation to the front device and the like. To do. When the gate lock lever is in the unlocked position, the gate lock switch 22 outputs an ON signal, and the vehicle body controller 21 operates the gate lock valve 23 so that the pilot pressure communicates, thereby enabling operation of the front device and the like. Become.

  The antitheft device 3 is installed in the driver's seat of the hydraulic excavator 1 and includes an input terminal (tenkey) 31, a communication device 32, an antitheft controller 33, a buzzer 34, and a display device 35. The anti-theft controller 33 inputs information from the input terminal 31, the communication device 32, and the key switch 12, performs a predetermined calculation, and outputs a machine operation permission signal or a machine operation inhibition signal to the engine controller 11 and the vehicle body controller 21. .

  FIG. 3A is a diagram showing an outline of the control function of the starter control unit 11a which is a part of the engine controller 11. The starter control unit 11a includes a machine operation permission / prohibition determination unit 11b and an amplifier 11c. The machine operation permission / prohibition determination unit 11b is closed when a machine operation permission signal is input from the anti-theft controller 33 (see FIG. 2), and receives a command signal (start signal) of the key switch 12 via the amplifier 11c. When it is output to the starter 13b and a machine operation inhibition signal is input, it opens and the command signal of the key switch 12 is shut off. That is, when the antitheft device 3 prohibits the operation of the hydraulic excavator 1, the starter 13b is not started even if the key switch 12 is operated.

  FIG. 3B is a diagram showing an outline of the control function of the gate lock control unit 21 a that is a part of the vehicle body controller 21. The gate lock control unit 21a includes a machine operation permission / prohibition determination unit 21b and an amplifier 21c. The machine operation permission / prohibition determination unit 21b is closed when a machine operation permission signal is input from the anti-theft controller 33 (see FIG. 2), and receives a signal from the gate lock switch 22 to input a gate lock valve 23 via an amplifier 21c. When the machine operation prohibition signal is input, the gate lock switch 22 is shut off. That is, when the antitheft device 3 prohibits the operation of the hydraulic excavator 1, even if the gate lock lever is operated to the unlocked position, the front device or the like cannot be operated.

  FIG. 4 is a diagram showing an outline of the control function of the anti-theft controller 33, and FIG. 5 is a diagram showing the main part of the control function.

  The anti-theft controller 33 includes a receiving unit 41, an administrator determining unit 42, an identification information collating unit 43, a personal identification number input unit 44, a personal identification number collating unit 45, a storage unit 46, a screen display unit 47, and information on a key signal determining unit 48. The input means, the machine operation control means of the prohibition release time measuring unit 51, the machine operation permission / prohibition control unit 52, the prohibition release time clearing unit 53, the time measuring unit 56 for acquiring internal date information, and the buzzer 34 A control function of the alarm output unit 57 that outputs an alarm signal is provided.

  The receiving unit 41 receives and inputs mail from the administrator's mobile phone 5 and the operator's mobile phone 6 via the communication device 32.

  The administrator determination unit 42 determines whether or not the received mail is a mail from the administrator's mobile phone 5. If the information (phone number of the mobile phone and the input number written in the e-mail) and the cancellation valid time are entered, enter the verification information and the cancellation valid time, and the entered verification information corresponds to the cancellation valid time. In addition, when the collation information and the cancellation valid time are stored in the storage unit 46, the collation information and the cancellation valid time are updated.

  The identification information matching unit 43 compares the identification information transmitted from the mobile phone 5 and the mobile phone 6 (the phone number of the mobile phone and the input number described in the mail) with the identification information stored in the storage unit 46, When the identification information matches, the cancellation effective time stored in the storage unit 46 and corresponding to the identification information is input from the storage unit 46 and output to the prohibition cancellation time measuring unit 51.

  The personal identification number input unit 44 inputs a signal related to the personal identification number via the input terminal 31.

  The personal identification number collating unit 45 compares the personal identification number input from the personal identification number input unit 44 with the personal identification number stored in the storage unit 46 (the telephone number of the mobile phone and the corresponding input number), and the personal identification numbers match. At this time, the cancellation effective time stored in the storage unit 46 and corresponding to the password is input from the storage unit 46 and output to the prohibition cancellation time measuring unit 51. If the verification fails three times, a command signal is output to the alarm output unit 57.

  The storage unit 46 stores the telephone numbers, input numbers, and release effective times of the mobile phone 5 and the plurality of mobile phones 6 in association with each other. These pieces of information are stored and updated only when the administrator determination unit 42 determines that the cell phone 5 is the administrator.

  When the prohibition release time (described later) is not set, the screen display unit 47 displays a password input screen for inputting a password on the display device 35, and the operation of the hydraulic excavator is stopped to determine the key signal. When the key OFF signal is input via the unit 48, the prohibition release time clear screen is displayed on the display device 35.

  The key signal determination unit 48 receives a command signal of the key switch 12, and receives a key OFF signal for commanding power supply and engine stop, a key ON signal for commanding start of power supply, and a start signal for commanding engine start. It is determined which and the determination result is output.

  The prohibition cancellation time measuring unit 51 sets the corresponding cancellation effective time stored in the storage unit 46 as the prohibition cancellation time, and measures the passage of the prohibition cancellation time. The prohibition release time is a time given to release the prohibition state of the operation of the excavator.

  In any case, when the identification information compared by the identification information collating unit 43 matches, when the code numbers compared by the code number collating unit 45 match, when the operation of the hydraulic excavator stops once the hydraulic excavator is started Also set the prohibition release time and measure the passage of the prohibition release time. When the identification information compared by the identification information matching unit 43 matches, a signal from the identification information matching unit 43 is input, and the countdown is performed until the prohibition release time becomes 0 from the release effective time. When the passwords compared by the password verification unit 45 match, a signal from the password verification unit 45 is input and counts down until the prohibition release time reaches 0 from the cancellation valid time. When the operation of the hydraulic excavator is stopped after the hydraulic excavator is started once, a key OFF signal is input from the key signal determination unit 48, and the prohibition release time is counted down until the cancellation effective time becomes zero.

  When the prohibition release time has elapsed, or when the prohibition release time clear screen (described later) is operated, it is determined that the prohibition release time has become 0 in any case, and the determination result is the machine operation permission / prohibition control unit 52. Output to.

  The machine operation permission / prohibition control unit 52 inputs a determination result as to whether or not the prohibition release time has become zero from the prohibition release time measuring unit 51, and sets the prohibition state of the hydraulic excavator operation when the prohibition release time is not zero. A machine operation permission signal to be released is output to the engine controller 11 and the vehicle body controller 21. On the other hand, when the prohibition release time is 0, a mechanical operation prohibition signal for prohibiting the operation of the hydraulic excavator is output to the engine controller 11 and the vehicle body controller 21.

  When the prohibition release time clear screen is operated, the prohibition release time clear unit 53 sends a command signal for setting the prohibition release time to 0 even when the prohibition release time elapses. Output.

  In the above, among the control functions of the input terminal 31, the communication device 32, and the anti-theft controller 33, the receiving unit 41, the administrator determining unit 42, the identification information collating unit 43, the personal identification number input unit 44, the personal identification number collating unit 45, The storage unit 46, the screen display unit 47, and the key signal determination unit 48 constitute information input means for inputting information for canceling the prohibition state of the operation of the hydraulic excavator from the outside, and among the control functions of the anti-theft controller 33 The prohibition cancellation time measuring unit 51, the machine operation permission / prohibition control unit 52, and the prohibition cancellation time clear unit 53 are based on the information input by the information input means, and cancel the prohibition for canceling the prohibition state of the operation of the hydraulic excavator. The hydraulic excavator operation is canceled and the hydraulic excavator can be started until the prohibition release time elapses. When the bell is started, constituting the mechanical operation control means for maintaining the release of the prohibition state.

  The identification information verification unit 43 or the password verification unit 45 constitutes a verification unit that compares verification information (password or identification information) input from the outside with the verification information stored in the storage unit 46.

  When the collation information compared by the collation means matches, the prohibition cancellation time measuring unit 51 stores the prohibition effective time corresponding to the collation information stored in the storage unit 46 as the prohibition cancellation time, and measures the passage of the prohibition cancellation time. The prohibition release time measuring means is configured, and the machine operation permission / prohibition control unit 52 cancels the prohibition state of the hydraulic excavator before the prohibition release time elapses, and again operates the hydraulic excavator when the prohibition release time elapses. Constitutes a machine operation permission / prohibition control means for prohibiting.

~ Operation ~
In the present embodiment, as a method of setting the prohibition release time, there is a case where the input terminal 31 provided in the antitheft device 3 is used when the administrator's mobile phone 5 is used or the operator's mobile phone 6 is used. .

  First, the operation when the prohibition release time is set via the administrator's mobile phone 5 will be described.

  The operation until the hydraulic excavator is started, used, and stopped will be described.

  Before the start of work, until the anti-theft device 3 receives a mail from the mobile phone 5, the prohibition release time measuring unit 51 does not set the prohibition release time and the prohibition release time is 0, and the machine operation is permitted / prohibited. The control unit 52 outputs a machine operation prohibition signal to the engine controller 11 and the vehicle body controller 21 to maintain the operation prohibition state of the hydraulic excavator 1.

  In this state, when the work schedule is changed and the work start time is delayed or the work is canceled, the anti-theft device 3 maintains the prohibited state of the operation of the hydraulic excavator 1, thereby changing the work schedule. Security can be secured without being affected. Further, the operator does not need to do anything, and security can be ensured without the operator feeling bothered by security management.

  At the start of the work, the manager receives a notification from the operator in advance, and transmits an e-mail in which the input number corresponding to the mobile phone 5 is written from the mobile phone 5 to the anti-theft device 3 before the work starts.

  When the receiving unit 41 receives the mail via the communication device 32, the manager determining unit 42 determines that the manager's mobile phone 5 is not information for storage or updating, and the phone number of the mobile phone 5 The described mail input number is output to the identification information collating unit 43 as identification information. The identification information collating unit 43 compares the input identification information with the identification information stored in the storage unit 46, and when the identification information matches, outputs the corresponding cancellation effective time to the prohibition cancellation time measuring unit 51. The prohibition cancellation time measuring unit 51 starts counting down when the cancellation effective time is set as the prohibition cancellation time. Until the prohibition release time elapses, assuming that the prohibition release time is not zero, the machine operation permission / prohibition control unit 52 outputs a machine operation permission signal to the engine controller 11 and the vehicle body controller 21, so that the operation of the hydraulic excavator 1 is performed. The prohibited state is released and the engine can be started.

  When the prohibited state is released, when the operator operates the key switch 12 to the ON position, power is supplied, and when the key switch 12 is further operated to the start position, the engine 13 is started. Further, when the operator operates the gate lock lever to the unlock position, the gate lock valve 23 operates so that the pilot pressure communicates, and the operation of the front device and the like becomes possible. Once the excavator 1 is started, the release of the prohibited state is maintained. In the series of operations for starting the excavator 1, it is not necessary for the operator to input identification information or the like.

  Thereby, the operator can start the hydraulic excavator 1 without feeling the trouble of security management, and can use it continuously thereafter. Administrators can manage security by remote control.

  On the other hand, the prohibition state of the operation of the hydraulic excavator 1 has been canceled as described above. However, when the work is subsequently stopped due to a change in the weather or the like, the prohibition cancellation time measurement unit 51 counts down and cancels the prohibition. When the time elapses and becomes zero, the machine operation permission / prohibition control unit 52 outputs a machine operation prohibition signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited. The cancellation effective time set as the prohibition cancellation time is a short time (for example, 60 minutes) for the thief to attempt the theft of the hydraulic excavator.

  In other words, when the work is not scheduled, for example, even if the scheduled work is subsequently canceled, the operation of the hydraulic excavator 1 is automatically prohibited, thereby ensuring security without being affected by the change of the work schedule. It can be secured. At this time, since the operator does not need to notify the administrator to cancel the operation, security can be ensured without the operator feeling bothered by security management.

  At the end of the work, when the operator operates the key switch 12 to the OFF position to stop the power supply and the engine, the key signal determination unit 48 determines that the key OFF signal, and the prohibition release time measurement unit 51 outputs the key OFF signal. Input, start countdown, and measure the lapse of prohibition release time. When the prohibition release time elapses and becomes zero, the machine operation permission / prohibition control unit 52 outputs a machine operation prohibition signal to the engine controller 11 and the vehicle body controller 21 and the operation of the hydraulic excavator 1 is prohibited.

  At this time, even if the work is completed earlier than scheduled, the operation of the hydraulic excavator 1 is automatically prohibited after the work is completed, thereby ensuring security without being affected by the change of the work schedule. Further, at this time, since the operator does not need to notify the administrator of the completion of the work, security can be ensured without the operator feeling troublesome in security management.

  At the end of the work, the screen display unit 47 inputs a key OFF signal of the key switch 12 and outputs a display signal for displaying the prohibition release time clear screen on the display device 35. When the operator operates the prohibition cancellation time clear screen, the prohibition cancellation time clear unit 53 sends a command signal for setting the prohibition cancellation time to 0 even when the prohibition cancellation time has elapsed. Output. When the prohibition release time becomes zero, the machine operation permission / prohibition control unit 52 outputs a machine operation prohibition signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited.

  That is, when the prohibition cancellation time clear screen is operated after the work is finished, the operation of the hydraulic excavator 1 is immediately prohibited, thereby ensuring the security more reliably without being affected by the change of the work schedule. Further, at this time, since the operator does not need to notify the administrator of the completion of the work, security can be ensured without the operator feeling troublesome in security management.

  The operation when starting the hydraulic excavator once started and then starting again will be described.

  During a short break such as a lunch break, when the operator operates the key switch 12 to the OFF position to stop the power supply and the engine, the key signal determination unit 48 determines that the key is OFF, and the prohibition release time measurement unit 51 uses this key. When the OFF signal is input, the cancellation effective time is reset as the prohibition cancellation time, countdown is started, and the passage of the prohibition cancellation time is measured. Until the prohibition release time elapses, assuming that the prohibition release time is not 0, the machine operation permission / prohibition control unit 52 outputs a machine operation permission signal to the engine controller 11 and the vehicle body controller 21, and the release of the prohibited state is maintained. Is done.

  At this time, when the operator operates the key switch 12 to the ON position, power is supplied, and when the key switch 12 is further operated to the start position, the engine 13 starts again. When the operator operates the gate lock lever to the unlock position, the gate lock valve 23 operates so that the pilot pressure communicates, and the operation of the front device and the like becomes possible again. In the series of operations for restarting the excavator 1, it is not necessary for the operator to input verification information (password or identification information).

  As a result, the operator can start the excavator 1 again without feeling troublesome in security management.

  On the other hand, when the short break becomes longer than scheduled or the work after the short break is canceled due to a change in the situation, the prohibition cancellation time measuring unit 51 counts down, and the prohibition cancellation time has elapsed to zero. The machine operation permission / prohibition control unit 52 outputs a machine operation prohibition signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited.

  That is, when the work is not scheduled, for example, even when the short break becomes longer than planned or the work after the short break is stopped, the operation of the hydraulic excavator 1 is automatically prohibited. Security can be secured without being affected by changes. At this time, since the operator does not need to notify the administrator to cancel the operation, security can be ensured without the operator feeling bothered by security management.

  Next, an operation for setting the prohibition release time via the operator's mobile phone 6 will be described.

  When setting the prohibition release time via the administrator's mobile phone 5 as described above, the administrator needs to be contacted in advance by the operator, but there is a case where the administrator and the operator are incompletely contacted. .

  In this case, the operator transmits a mail in which the input number is written from the mobile phone 6 to the anti-theft device 3 before starting the work.

  When the receiving unit 41 receives the mail via the communication device 32, the administrator determining unit 42 determines that it is not the administrator's mobile phone 5, and uses the mail input number described as the phone number of the mobile phone 6 as identification information. It outputs to the identification information collation part 43. The identification information collating unit 43 compares the input identification information with the identification information stored in the storage unit 46, and since the identification information matches, outputs the corresponding cancellation effective time to the prohibition cancellation time measuring unit 51. The prohibition cancellation time measuring unit 51 starts counting down when the cancellation effective time is set as the prohibition cancellation time. Until the prohibition release time elapses, assuming that the prohibition release time is not zero, the machine operation permission / prohibition control unit 52 outputs a machine operation permission signal to the engine controller 11 and the vehicle body controller 21, so that the operation of the hydraulic excavator 1 is performed. The prohibited state is released and the engine can be started.

  When the prohibited state is released, when the operator operates the key switch 12 to the ON position, power is supplied, and when the key switch 12 is further operated to the start position, the engine 13 is started. Further, when the operator operates the gate lock lever to the unlock position, the gate lock valve 23 operates so that the pilot pressure communicates, and the operation of the front device and the like becomes possible. That is, the operator can start the hydraulic excavator 1 only by sending a mail from the mobile phone 6.

  As a result, the operator can start the hydraulic excavator 1 without feeling the trouble of security management without going through the administrator's mobile phone 5.

  The other operations are the same as when the prohibition release time is set via the administrator's mobile phone 5.

  Next, an operation in the case of setting the prohibition release time by inputting the password from the input terminal 31 provided in the antitheft device 3 will be described.

  The hydraulic excavator sometimes performs work in a mountainous area where a mobile phone cannot communicate. In this case, the anti-theft device 3 cannot receive mail from the mobile phone 5 and the mobile phone 6, and the operation of the hydraulic excavator 1 is prohibited. It is in.

  When the operator operates the key switch 12 to the ON position in the prohibited state, power is supplied and the display device 35 is activated. The prohibition cancellation time measuring unit 51 determines that the prohibition cancellation time is 0 and the prohibition cancellation time is not set, and outputs a determination result to the screen display unit 47. The screen display unit 47 is used for inputting a personal identification number. A password input screen is displayed on the display device 35.

  The operator inputs a personal identification number via the input terminal 31. Here, the personal identification number is, for example, the telephone number of the operator's mobile phone 6 and the input number assigned to the mobile phone 6.

  The personal identification number input unit 44 outputs the personal identification number to the personal identification number collation unit 45. The personal identification number collating unit 45 compares the personal identification number input from the personal identification number input unit 44 with the personal identification number stored in the storage unit 46 (the telephone number of the mobile phone and the corresponding input number). Then, the cancellation effective time corresponding to the password is input from the storage unit 46 and output to the prohibition cancellation time measuring unit 51. The prohibition cancellation time measuring unit 51 starts counting down when the cancellation effective time is set as the prohibition cancellation time. Until the prohibition release time elapses, assuming that the prohibition release time is not zero, the machine operation permission / prohibition control unit 52 outputs a machine operation permission signal to the engine controller 11 and the vehicle body controller 21, so that the operation of the hydraulic excavator 1 is performed. The prohibited state is released and the engine can be started.

  Thus, the operator can start the hydraulic excavator 1 even if the hydraulic excavator is in a place where the mobile phone cannot communicate.

  When the excavator 1 is in a place where a mobile phone cannot be communicated, if a mail is transmitted from the mobile phone 5 or the mobile phone 6, the receiving unit 41 of the anti-theft device 3 has moved to a place where the excavator 1 can be communicated with a mobile phone. You will receive an email later. The identification information collating unit 43 compares the transmission date information attached to the mail with the internal date information acquired from the time measuring unit 56, and since the date information is different, the transmitted identification information is ignored and the identification information is consistent. Even if it does, the output to the prohibition cancellation time measuring unit 51 of the corresponding cancellation effective time is not performed.

  Thereby, even if the hydraulic excavator is in a place where the mobile phone cannot be communicated, it is possible to prevent the prohibition state of the operation of the hydraulic excavator 1 from being canceled by mistake.

  The other operations are the same as when the prohibition release time is set via the mobile phone 5 and the mobile phone 6.

  Finally, the operation for storing the collation information (phone number of the mobile phone, input number) and the release valid time in the storage unit 46 via the manager's mobile phone 5 and updating them will be described.

  The administrator transmits an email in which the telephone number, input number, and release effective time of the mobile phone 5 or mobile phone 6 to be stored or updated are written from the mobile phone 5 to the anti-theft device 3.

  When the reception unit 41 receives the mail via the communication device 32, the administrator determination unit 42 determines that the administrator's mobile phone 5 is information for storage and update, and the target mobile phone When the collation information and the release valid time are not stored in the storage unit 46, the collation information and the release valid time are associated with each other and stored in the storage unit 46, and the collation information and the release valid time are stored. In the case, the collation information and the release valid time are updated.

  Thereby, the administrator can perform security management by remote control.

  Therefore, according to the present embodiment, it is possible to ensure security without being bothered by the operator and being affected by changes in the work schedule. In addition, the administrator can manage security by remote control.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a diagram illustrating a control function of the anti-theft controller 33A of the anti-theft device for construction equipment according to the second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals. The difference between the first embodiment and the second embodiment is that the administrator determination unit 42, the identification information collation unit 43, the personal identification number input unit 44, the personal identification number collation unit 45, and the storage unit 46 are eliminated, and the screen The display unit 47A and the prohibition release time measuring unit 51A are changed. That is, the anti-theft device 3A has no collation means and storage unit, and directly determines the prohibition cancellation time based on the input information (mail indicating the cancellation effective time) from the mobile phone 5 without determining whether the verification information matches. Is set.

  The administrator receives a notification from the operator in advance, and transmits a mail in which the cancellation effective time is written to the mobile phone 5 from the mobile phone 5 to the anti-theft device 3A before starting the work.

  When the receiving unit 41 receives the mail via the communication device 32, the cancel valid time described in the mail is output to the prohibition cancel time measuring unit 51A. The prohibition cancellation time measurement unit 51A starts counting down when the cancellation effective time is set as the prohibition cancellation time. Until the prohibition release time elapses, assuming that the prohibition release time is not zero, the machine operation permission / prohibition control unit 52 outputs a machine operation permission signal to the engine controller 11 and the vehicle body controller 21, so that the operation of the hydraulic excavator 1 is performed. The prohibited state is released and the engine can be started. Other operations are the same as those in the first embodiment.

    Therefore, also in the present embodiment, security can be ensured without causing the operator to feel bothered and affected by changes in the work schedule. In addition, the administrator can manage security by remote control.

<Other embodiments>
Although several embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications are possible within the spirit of the present invention.

  In the first embodiment, the anti-theft controller 33 collates the identification information when receiving the mail with the input number, and sets the corresponding cancellation valid time as the prohibition cancellation time when the identification information matches. However, when the e-mail with the input number and start time is received, the identification information is collated, and when the identification information matches, the internal date information acquired from the time measuring unit 56 matches the start time described in the e-mail. Sometimes, the corresponding cancellation valid time may be set as the prohibition cancellation time.

  In the present embodiment, the prohibition state of the operation of the hydraulic excavator 1 is canceled at the start time described in the mail. Even if the scheduled work is subsequently canceled, the operation of the hydraulic excavator 1 is automatically prohibited when the prohibition release time has elapsed and becomes zero.

  In the second embodiment, when the anti-theft controller 33A receives the mail in which the release effective time is described, the release effective time described in the mail is set as the prohibition release time. When the internal date information acquired from the time measuring unit 56 matches the start time described in the mail, the cancellation valid time described in the mail is set as the prohibition cancellation time. Also good.

  In the first embodiment, the communication device 32 receives mails from the mobile phone 5 and the mobile phone 6 and uses the mobile phone number and the input number described in the mail as identification information. You may use only the telephone number of a mobile telephone as identification information, without using.

  In the first embodiment, the mobile phone number and the corresponding input number are used as the personal identification number, but only the input number may be used as the personal identification number.

  In the first embodiment and the second embodiment, the cancellation time measuring units 51 and 51A count down the prohibition cancellation time from the cancellation effective time to 0, and when the prohibition cancellation time becomes 0, the prohibition cancellation time is reduced. Although it is determined that the time has elapsed, the prohibition cancellation time may be counted from 0 to the cancellation effective time, and it may be determined that the prohibition cancellation time has elapsed when the prohibition cancellation time reaches the cancellation effective time.

  Even in the embodiment configured as described above, security can be ensured without causing the operator to feel bothered and without being affected by the change of the work schedule. In addition, the administrator can manage security by remote control.

  In the first embodiment and the second embodiment, when starting the hydraulic excavator, the prohibition release time is set, and once the hydraulic excavator is started and then stopped, the prohibition release time is reset. The prohibition release time may be set only when the hydraulic excavator is once started and then stopped.

  There is no need for the operator to input verification information, so that the operator can start the excavator 1 again without feeling bothered by security management.

  Further, when the work is not scheduled, for example, even when the short break becomes longer than planned or the work after the short break is canceled, the operation of the hydraulic excavator 1 is automatically prohibited. Security can be secured without being affected by changes. At this time, since the operator does not need to notify the administrator to cancel the operation, security can be ensured without the operator feeling bothered by security management.

It is a figure which shows the whole system configuration | structure with which the antitheft device of the construction machine in the 1st Embodiment of this invention is applied. It is a figure which shows the principal part structure of a hydraulic shovel. It is a figure which shows the outline | summary of the control function of the starter control part which is a part of engine controller, and the figure which shows the outline | summary of the control function of the gate lock control part which is a part of vehicle body controller. It is a figure which shows the outline | summary of the control function of an antitheft controller. It is a figure which shows the principal part of the control function of an antitheft controller. It is a figure which shows the control function of the antitheft controller of the antitheft device of the construction machine in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 3 Anti-theft device 4 Public network 5 Manager's mobile phone 6 Operator's mobile phone 11 Engine controller 11a Starter control unit 11b Machine operation permission / prohibition judgment unit 11c Amplifier 12 Key switch 13 Engine 13a Electronic governor 13b Starter 14 Engine control dial 15 Engine speed sensor 21 Car body controller 21a Gate lock control unit 21b Machine operation permission / prohibition determination unit 21c Amplifier 22 Gate lock switch 23 Gate lock valve 31 Input terminal (tenkey)
32 Communication device 33, 33A Anti-theft controller 34 Buzzer
35 display device 41 receiver,
42 administrator determination unit 43 identification information verification unit 44 password input unit,
45 PIN Number Matching Unit 46 Storage Unit 47, 47A Screen Display Unit 48 Key Signal Determination Unit 51, 51A Prohibition Release Time Measurement Unit 52 Machine Operation Permit / Prohibition Control Unit 53 Prohibition Release Time Clear Unit 56 Time Measurement Unit 57 Alarm Output Unit

Claims (9)

In the anti-theft device for construction machinery that prohibits the start of the machine by prohibiting the operation of the machine when the machine is in a non-operating state,
Information input means for inputting information for canceling the prohibited state of operation of the machine from the outside;
Based on the information input by the information input means, a prohibition release time for canceling the prohibition state of the operation of the machine is set, and the operation of the machine is only performed until the prohibition release time elapses thereafter. An anti-theft device for a construction machine, comprising: a machine operation control means for releasing the prohibited state to allow the machine to be started and maintaining the release of the prohibited state once the machine is started. In the construction machine antitheft device according to claim 1,
The machine operation control means resets the prohibition release time when the machine is started and the release of the prohibition state is maintained, and then the prohibition release time elapses when the operation of the machine stops. The anti-theft device for a construction machine is characterized in that the prohibition state can be released and the machine can be started only until the time until the prohibition release time elapses, and the machine operation is prohibited. In the construction machine antitheft device according to claim 2,
The information input means has a display device for displaying a prohibition release time clear screen when the operation of the machine is stopped,
When the prohibition release time clear screen is operated, the machine operation control means sets the machine operation again in a prohibited state even until the prohibition release time elapses. Anti-theft device. In the construction machine anti-theft device according to claim 1 or claim 2,
The information input means includes
A storage unit that stores the collation information and the release effective time in association with each other;
Collation means for comparing collation information (password or identification information) input from the outside and collation information stored in the storage unit;
The machine operation control means includes
An antitheft device for a construction machine, wherein when the collation information compared by the collation means matches, the cancellation effective time stored in the storage unit and corresponding to the verification information is set as the prohibition cancellation time. In the construction machine antitheft device according to claim 4,
The machine operation control means includes
When the collation information compared by the collation means matches, the prohibition cancellation is stored in the storage unit, the cancellation effective time corresponding to the verification information is set as the prohibition cancellation time, and the passage of the prohibition cancellation time is measured Time measuring means;
Machine operation permission / prohibition control means for releasing the prohibited state of the machine operation before the prohibition release time elapses, and again prohibiting the operation of the machine when the prohibition release time elapses. Anti-theft device for construction machinery. In the construction machine antitheft device according to claim 4,
The information input means includes
The collation information and the cancellation valid time are input via the wireless communication network, the input verification information and the cancellation valid time are associated with each other and stored in the storage unit, and the verification information and the cancellation valid time are stored in the storage unit. An anti-theft device for a construction machine, further comprising manager input setting means for updating the collation information and the release valid time if stored. In the construction machine antitheft device according to claim 4,
The information input means includes
A display device provided in the cab of the construction machine;
Construction machine comprising: a personal identification number input screen display means for displaying a personal identification number input screen for inputting a personal identification number as the input information on the display device when the prohibition release time is not set Anti-theft device. In the construction machine antitheft device according to claim 4 or 7,
The information input means includes
An anti-theft device for a construction machine, further comprising a mobile phone receiver for inputting identification information transmitted from a mobile phone as the input information. The antitheft device for a construction machine according to claim 8,
The identification information transmitted from the mobile phone as the input information is mail information,
The information input means compares the transmission date information and the internal date information that are attached to the mail information and transmitted from the mobile phone, and ignores the transmitted identification information if the date information is different. An anti-theft device for construction machinery.

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