CN101746350B - Anti-theft system for construction machines - Google Patents

Abstract

The present invention provides an anti-theft device for construction machinery capable of ensuring safety without making the operator feel troublesome and without being affected by changes in work plans. When the prohibition release time measurement part (51) of the anti-theft controller (33) sets the release effective time as the prohibition release time, the countdown starts. During the period until the prohibition release time elapses, the prohibition release time is not zero, the mechanical operation permission/prohibition control unit (52) outputs the mechanical operation permission signal to the engine controller (11) and the vehicle body controller (21), and the hydraulic excavator is released. The disabled state of the machine (1) can be started. On the other hand, the prohibition release time measuring part (51) counts down, and when the prohibition release time elapses and becomes zero, the mechanical operation permission/prohibition control part (52) sends engine controller (11) and vehicle body controller (21) ) outputs a mechanical action prohibition signal, and the action of the hydraulic excavator (1) becomes prohibited.

Description

Anti-theft device for construction machinery

technical field

The invention relates to an anti-theft device for construction machines such as hydraulic excavators.

Background technique

Construction machines such as hydraulic excavators generally have 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 0-9 numeric keypad input device, and a password is input through the 0-9 numeric keypad input device. able to start. The anti-theft device described in Patent Document 2 is provided with a communication device, a password is input through the communication device, and when the verification based on the password matches, the prohibited state of the operation of the construction machine is released and the engine can be started.

However, in recent years, the actual operation of construction machinery such as hydraulic excavators has become the mainstream in which leasing companies purchase large quantities of construction machinery and lease them to customers who carry out civil engineering work as needed. In this case, the leasing company, as a manager, wants to perform unified safety management of a plurality of construction machines, while the operator, as a customer, wants to avoid the cumbersome safety management of entering a password every time he starts work. . Against this background, Patent Document 3 describes the following anti-theft device, that is, a communication device is provided on the anti-theft device, and the manager sets the lock start time and the lock release time on the manager's terminal. If the communication device sends a setting command, it receives the setting command and becomes a locked state (prohibited state) in which the operation of the construction machine is prohibited within a specific time zone (from the set lock start time to the lock release time).

In addition, in Patent Document 3, the following anti-theft device is also proposed. That is, in order to respond randomly according to the operation situation, the administrator side sets the start-up lock time and the lock-release time. When the device sends a setting command, it receives the setting command and puts the construction machine in a locked state, and furthermore, it repeats receiving the setting command until the unlocking time immediately before the activation lock time elapses.

Patent Document 1: Japanese Patent Application Laid-Open No. 9-50584

Patent Document 2: Japanese Patent Laid-Open No. 2005-255094

Patent Document 3: Japanese Patent Laid-Open No. 2003-34232

However, both anti-theft devices described in Patent Document 3 are anti-theft devices that set the time zone (from the start time to the release time) during which the operation of the machine is prohibited. Therefore, the work during construction is not carried out as planned. In this case, the following problems arise. For example, when the work is completed earlier than planned, the lock will not be locked until the set lock start time, and the safety will be lowered. In addition, in order to change the start time of the lock on the administrator side, the administrator sends the setting command after receiving notification of job completion from the operator, so there is a time lag between job completion and setting command sending, and the lock is released during this period. , so that the problem of reduced security cannot be eliminated. Moreover, the operator needs to notify the manager of the completion of the work every time the work is finished, and the operator feels that safety management is cumbersome. In addition, when the notification of the completion of the work from the operator to the manager is not reliably communicated, the unlocked state continues, resulting in the above-mentioned problem of lowered safety.

In addition, the lock release state is automatically entered at the time of lock release. When the operator plans to start work, but the work is suspended or delayed due to changes in weather or other conditions, the unlocked state continues, resulting in the above-mentioned problem of lowering safety. In addition, the operator needs to notify the manager of the work suspension every time the work is suspended, and the operator feels that safety management is cumbersome.

On the other hand, during construction, the construction machinery is stopped every time there is a short break such as a lunch break. The anti-theft device described in Patent Document 1 or Patent Document 2 clears the identification state of the password when the construction machine is stopped and the power is OFF, and when the operation is resumed after a short pause and the construction machine is restarted, the password needs to be input again, and the operator will Feel the cumbersome security management. In the antitheft device described in the aforementioned Patent Document 3, the unlocked state is maintained after the lock is unlocked once, so that the operator does not feel troublesome for security management. However, when the short pause is longer than expected, or the work after the short pause is suspended due to a change in circumstances, the unlocked state continues, resulting in the above-mentioned problem of lowering safety.

Contents of the invention

A first object of the present invention is to provide an antitheft device for a construction machine capable of ensuring safety without making an operator feel troublesome and without being affected by changes in work plans.

The second object of the present invention is to further provide an anti-theft device for a construction machine that can be safely managed by a manager through remote operation.

(1) In order to achieve the above-mentioned first object, the present invention makes the operation of the machine into a prohibited state when the machine is in a non-operating state, and prohibits the start of the machine. information on the prohibition state of the operation of the machine; and the mechanical action control mechanism, based on the information input through the information input unit, sets the prohibition release time for releasing the prohibition state of the operation of the machine, and thereafter only until the During the elapse of the prohibition release time, the prohibition state of the operation of the machine is released to enable the start of the machine, and once the machine is started, the release of the prohibition state is maintained.

In the present invention thus constituted, the information input means and the mechanical action control means are provided, and the prohibition release time for releasing the prohibition state of the mechanical operation is set based on the input information, and only during the period until the prohibition release time elapses. The prohibition state of the mechanical operation is released internally, so that the starting of the machine can be carried out. That is, the operation of the machine is prohibited until the information for releasing the prohibited state of the operation of the machine is input from the outside, so that the operator can not feel the cumbersomeness of safety management before the operation starts, and is not affected by the work. Planned changes are impacted to ensure safety.

In addition, only during the period until the prohibition release time elapses, the prohibition of the operation of the machine is released and the start of the machine is enabled, whereby the machine can be started without making the operator feel troublesome for safety management.

In addition, once the machine is activated, the release of the prohibited state is maintained, whereby the operation of the machine can be continued without making the operator feel troublesome for safety management.

On the other hand, when the prohibition release time elapses, the operation of the machine is automatically prohibited. Thereby, even when the work is suspended or delayed, or the work is completed earlier than planned, it is possible to ensure safety without making the operator feel troublesome for safety management and without being affected by changes in the work plan.

In this way, the present invention can ensure safety without making the operator feel troublesome about safety management and without being affected by changes in the work plan.

(2) In the above (1), it is preferable that, once the machine is started and the release of the prohibition state is maintained, when the operation of the machine stops thereafter, the mechanical operation control means resets the prohibition release time. , and only during the period until the prohibition release time elapses, the release of the prohibition state is maintained to enable the start of the machine, and when the prohibition release time elapses, the operation of the machine becomes the prohibition state.

Thereby, the machine can be restarted without making the operator feel troublesome for safety management. In addition, since the operation of the machine is automatically disabled when the prohibition release time elapses, after the operation of the machine stops, even if the short-term pause is longer than the predetermined time or the work after the short-time rest is suspended, it is not necessary to stop the operation. The operator feels that the safety management is troublesome, and the safety can be ensured without being affected by the change of the work plan.

(3) In the above (2), it is preferable that the information input means includes a display device. When the operation of the machine stops, the display device displays the prohibition release time clearing screen. When the prohibition release time clearing screen is operated, Then, even during the period until the prohibition release time elapses, the mechanical operation control means again puts the mechanical operation in the prohibited state.

Thereby, even before the prohibition release time elapses, it is possible to ensure safety more reliably without making the operator feel that safety management is troublesome, and without being affected by changes in the work plan.

(4) In the above (1) or (2), it is preferable that the information input mechanism includes: a storage unit that stores the verification information in correspondence with the release valid time; and a verification mechanism that stores the verification information (password or identification information (telephone number)) is compared with the collation information stored in the storage unit, and when the collation information compared by the collation mechanism agrees, the mechanical action control mechanism stores the information in the storage unit and The release valid time corresponding to the verification information is set as the prohibition release time.

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

(5) In the above (4), it is preferable that the mechanical motion control means includes: a prohibition release time measurement means, and when the verification information compared by the verification means agrees, it is stored in the storage unit and compared with The release effective time corresponding to the verification information is set as the prohibition release time, and the elapse of the prohibition release time is measured; and the mechanical operation permission/prohibition control mechanism, before the prohibition release time elapses, The prohibition state of the operation of the machine is released, and the operation of the machine is again prohibited when the prohibition release time elapses.

As a result, the prohibition of the operation of the machine is released only during the period until the prohibition release time elapses, enabling the start of the machine.

(6) In order to achieve the above-mentioned second object, in the above-mentioned (4), it is preferable that the information input mechanism further includes an input setting mechanism for the manager, and the input setting mechanism for the manager inputs the verification information and cancel the valid time, store the input verification information and the cancellation valid time in the storage unit in correspondence, and if the verification information and the cancellation valid time are stored in the storage unit, combine the verification information and the cancellation Effective time to update.

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

(7) In the above (4), it is preferable that the information input mechanism includes: a display device provided in the cab of the construction machine; and a password input screen display mechanism, and the password input screen display mechanism is not set. A password input screen for inputting a password as the input information is displayed on the display device when the prohibition release time is reached.

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

(8) In the above (4) or (7), it is preferable that the information input means further includes a mobile phone information receiving unit 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, administrators can perform security management through remote operation.

(9) In the above (8), it is preferable that the identification information sent from the mobile phone as the input information is short message information (mail information), and the information input means attaches the information from the mobile phone to the short message information. The transmission date information at the time of transmission is compared with the internal date information, and 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 is not connected, it is possible to prevent the operation prohibition state of the machine from being canceled erroneously later.

(10) In order to achieve the above object, the anti-theft device for construction machinery of the present invention, when the machine is in a non-operating state, makes the action of the machine into a prohibited state and prohibits the start of the machine. It is characterized in that it includes: an information input mechanism that inputs Information for releasing the prohibition state of the operation of the machine; and the mechanical operation control mechanism, based on the information input through the information input means, releases the prohibition state of the operation of the machine to enable the start of the machine, once In the case of starting the machine, when the operation of the machine stops thereafter, the mechanical operation control mechanism sets the prohibition release time, and only in the period until the prohibition release state passes, the release of the prohibition state is maintained, so that the machine can be started, and when the prohibition release time elapses, the operation of the machine is prohibited.

Thereby, the machine can be restarted after a brief stop without making the operator feel troublesome for safety management. In addition, when the prohibition release time elapses, the operation of the machine is automatically prohibited. Therefore, even if the operation of the machine is stopped, the short-term pause is longer than the predetermined time, or the operation after the short-time rest is suspended, the operation can not be stopped. The operator feels that the safety management is cumbersome, and the safety is ensured without being affected by the change of the work plan.

(effect of invention)

According to the present invention, safety can be ensured without making the operator feel troublesome and without being affected by changes in the work plan. Furthermore, the administrator can perform security management through remote operation.

Description of drawings

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.

Fig. 2 is a diagram showing the configuration of main parts of the hydraulic excavator.

3 is a diagram showing an outline of a control function of a starter control unit that is a part of an engine controller, and a diagram showing an outline of a control function of a door lock control unit that is a part of a vehicle body controller.

Fig. 4 is a diagram showing an overview of the control functions of the anti-theft controller.

Fig. 5 is a diagram showing main parts of the control function of the anti-theft controller.

6 is a diagram showing control functions of an anti-theft controller of the anti-theft device for construction machinery according to a second embodiment of the present invention.

(Description of Reference Signs)

1 hydraulic excavator

3 anti-theft device

4 Public line network

5 Manager's mobile phone

6 Operator's mobile phone

11 Engine Controller

11a Starter Control

11b Machine operation permission and prohibition judgment section

11c amplifier

12 key switch

13 engine

13a Electronic regulator

13b starter

14 Engine control panel

15 Engine speed sensor

21 Body Controller

21a Door Lock Control

21b Machine Operation Permission and Prohibition Judgment Section

21c amplifier

22 Door lock switch

23 door lock valve

31 Input terminal (0～9 number keys)

32 communication device

33, 33A anti-theft controller

34 buzzer

35 display device

41 Information Receiving Department

42 Management Judgment Department

43 Identification Information Verification Department

44 Password input section

45 Password checking department

46 storage department

47, 47A screen display part

48 Key signal judgment department

51, 51A Prohibition release time measurement department

52 Machine Action Permission and Prohibition Control Department

53 Prohibition release time clearing department

56 Time Measurement Department

57 Alarm output section

Detailed ways

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

(first embodiment)

(structure)

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 , the construction machine antitheft device according to the present embodiment is installed in a driver's seat of a hydraulic excavator 1 which is a representative example of construction machines. The anti-theft device 3 has a communication device (described later), and can receive short messages (mail) from the mobile phone 5 of the renter, the manager of the hydraulic excavator, through the public line network 4, and can receive messages from the operator who uses the hydraulic excavator. Short message of the mobile phone 6.

FIG. 2 is a diagram showing the configuration of main parts of the hydraulic excavator 1 . The hydraulic 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 from the key switch 12, performs predetermined calculations, and outputs the calculation results to the electronic regulator 13a or the starter 13b, thereby controlling the start and stop of the engine 13. In addition, the engine controller 11 receives a command signal from the engine control panel 14 and a detection signal from the engine speed sensor 15, performs predetermined calculations, and outputs the calculation results to the electronic regulator 13a, thereby controlling the speed and torque of the engine 13.

In the body control system, the body controller 21 electronically controls the hydraulic system of the hydraulic excavator, and the hydraulic system controls the front equipment of the hydraulic excavator, etc. through the discharge oil from the hydraulic pump (not shown) driven by the engine 13. drive control. Also, the vehicle body controller 21 receives an ON/OFF signal of the door lock switch 22 , performs predetermined calculations, and outputs a control signal to the door lock valve 23 . The driver's seat of the hydraulic excavator 1 is provided with a door lock lever (not shown) that can be selectively operated to a position for restricting the entrance of the driver's seat (lock release position) and an open position ( lock position), when the door lock lever is at the lock position, the door lock switch 22 outputs an OFF signal, and the vehicle body controller 21 activates the door lock valve 23 to block the communication of the pilot pressure, thereby invalidating the operation of the front device, etc. . When the door lock lever is at the unlocked position, the door lock switch outputs an ON signal, and the vehicle body controller 21 operates the door lock valve 23 to communicate the pilot pressure, thereby enabling operation of front devices and the like.

The anti-theft device 3 is installed in the driver's seat of the hydraulic excavator 1 and has an input terminal (0-9 numeric keys) 31 , a communication device 32 , an anti-theft 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 predetermined calculations, and outputs a mechanical operation permission signal or a mechanical operation prohibition signal to the engine controller 11 and the vehicle body controller 21 .

FIG. 3( a ) is a diagram showing an outline of control functions of a starter control unit 11 a that is a part of the engine controller 11 . The starter control unit 11a has a machine operation permission/prohibition determination unit 11b and an amplifier 11c. As the mechanical operation permission/prohibition judgment section 11b, it is closed when the mechanical operation permission signal from the anti-theft controller 33 (see FIG. Output; open when the mechanical action prohibition signal is input, and block the command signal of the key switch 12. That is, when the antitheft device 3 prohibits the operation of the hydraulic excavator 1, the starter 13b will not be activated even if the key switch 12 is operated.

FIG. 3( b ) is a diagram showing an outline of control functions of a door lock control unit 21 a that is a part of the vehicle body controller 21 . The door lock control unit 21a has a mechanical operation permission/prohibition determination unit 21b and an amplifier 21c. As the mechanical operation permission/prohibition judgment part 21b, it is closed when the mechanical operation permission signal from the anti-theft controller 33 (referring to Fig. 2) is input, and the signal of the door lock switch 22 is input and output to the door lock valve 23 via the amplifier 21c; When the mechanical action prohibiting signal is turned on, the signal of the door lock switch 22 is blocked. That is, when the antitheft device 3 prohibits the operation of the hydraulic excavator 1, even if the door lock lever is operated to the unlocked position, the front equipment and the like cannot be operated.

FIG. 4 is a diagram showing an outline of control functions of the antitheft controller 33 . FIG. 5 is a diagram showing main parts of a control function.

The anti-theft controller 33 has an information receiving unit 41, a manager judging unit 42, an identification information checking unit 43, a password input unit 44, a password checking unit 45, a storage unit 46, a screen display unit 47, and a key signal judging unit 48. , the prohibition release time measurement part 51, the mechanical action permission and prohibition control part 52, the mechanical action control mechanism of the prohibition release time clearing part 53, the time measurement part 56 for obtaining internal date information, and the buzzer 34 output The control function of the alarm output part 57 of the alarm signal.

The message receiving unit 41 receives and inputs a short message from the manager's mobile phone 5 or the operator's mobile phone 6 via the communication device 32 .

Manager judging section 42 judges whether the received short message is a short message from the manager's mobile phone 5, if it is judged to be the manager's mobile phone 5, then in the short message, record relevant mobile phone 5 or mobile phone 6 In the case of verification information (the phone number of the mobile phone and the input number recorded in the short message) and the cancellation valid time, input the verification information and the cancellation valid time, and store the input verification information and the cancellation valid time in association In the storage unit 46, and 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 checking unit 43 compares the identification information (the phone number of the mobile phone and the input number recorded in the short message) sent from the mobile phone 5 and the mobile phone 6 with the identification information stored in the storage unit 46, and when the identification information matches , the release 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 release time measurement unit 51 .

The password input unit 44 inputs a signal related to a password through the input terminal 31 .

The password check section 45 compares the password input from the password input section 44 with the password (the phone number of the mobile phone and the corresponding input number) stored in the storage section 46, and when the password is consistent, it will be stored in the storage section 46 and The release valid time corresponding to the password is input from the storage unit 46 and output to the prohibition release time measurement unit 51 . In addition, 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 of the mobile phone 5 and a plurality of mobile phones 6 , input numbers, and cancellation valid times in association with each other. These pieces of information are stored or updated only when the manager judging unit 42 has judged the mobile phone 5 of the manager.

The screen display unit 47 displays a password input screen for inputting a password on the display device 35 when the prohibition release time (described later) is not set, and the key OFF signal is input through the key signal judging unit 48 when the operation of the hydraulic excavator is stopped. , the prohibition release time clearing screen is displayed on the display device 35 .

The key signal judging unit 48 receives a command signal from the key switch 12, and judges whether the command signal is a key OFF signal for instructing power supply and stopping of the engine, a key ON signal for instructing start of power supply, and a start signal for instructing engine start. One of them, and output the judgment result.

The prohibition release time measurement unit 51 sets the corresponding release effective time stored in the storage unit 46 as the prohibition release time, and measures the elapse of the prohibition release time. The prohibition release time is a time given to cancel the prohibition state of the operation of the hydraulic excavator.

When the identification information compared by the identification information checking unit 43 matches, when the passwords compared by the password checking unit 45 match, when the operation of the hydraulic excavator stops after the hydraulic excavator is once started, in any case, set The prohibition release time is set, and the elapse of the prohibition release time is measured. When the identification information compared by the identification information collating section 43 matches, a signal from the identification information collating section 43 is input, and the prohibition release time is counted down from the release effective time to zero. When the passwords compared by the password checking unit 45 match, a signal from the password checking unit 45 is input, and the prohibition release time counts down from the release valid time to zero. When the operation of the hydraulic excavator is stopped after the hydraulic excavator has been started once, the key OFF signal from the key signal determination unit 48 is input, and the prohibition release time counts down from the release effective time to zero.

Then, when the prohibition release time has expired and the prohibition release time clear screen (described later) is operated, it is judged that the prohibition release time is zero in any case, and the judgment result is output to the mechanical operation permission/prohibition control unit 52 .

The mechanical operation permission/prohibition control unit 52 inputs the judgment result of whether the prohibition release time has become zero from the prohibition release time measuring unit 51, and outputs the release to the engine controller 11 and the vehicle body controller 21 when the prohibition release time is not zero. A mechanical operation permission signal for a state in which the operation of the hydraulic excavator is prohibited. When the prohibition release time is zero, 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 .

The prohibition release time clearing unit 53 outputs a command signal to set the prohibition release time to zero to the prohibition release time measuring unit 51 even during the elapse of the prohibition release time when the prohibition release time clear screen is operated.

Above, the information receiving part 41 in the control function of the input terminal 31, the communication device 32, and the anti-theft controller 33, the manager judgment part 42, the identification information checking part 43, the password input part 44, the password checking part 45, the storage part 46, The screen display unit 47 and the key signal judging unit 48 constitute an information input mechanism for externally inputting information for releasing the prohibited state of the operation of the hydraulic excavator. The mechanical operation permission/prohibition control unit 52 and the prohibition release time clearing unit 53 constitute a mechanical operation control mechanism for setting the prohibition for canceling the prohibited state of the operation of the hydraulic excavator based on the information input through the information input unit. Then, only during the period until the prohibition release time elapses, the hydraulic excavator is released from the prohibition state to enable the start of the hydraulic excavator, and once the hydraulic excavator is started, the release of the prohibition state is maintained.

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

The prohibition release time measuring unit 51 constitutes a prohibition release time measuring mechanism that validates the release corresponding to the collation information stored in the storage unit 46 when the collation information compared by the collation mechanism matches. The time is set as the prohibition release time, and the elapse of the prohibition release time is measured. The mechanical operation permission/prohibition control unit 52 constitutes a mechanical operation permission/prohibition control mechanism that releases the prohibition state of the operation of the hydraulic excavator before the prohibition release time elapses, and restarts the hydraulic excavator after the prohibition release time elapses. The operation of the hydraulic excavator is prohibited.

(action)

In the present embodiment, as a method of setting the prohibition release time, there are the cases of carrying out by the manager's mobile phone 5, the case of carrying out by the operator's mobile phone 6, and the use of the input terminal 31 which the anti-theft device 3 has. Condition.

First, the operation in the case of setting the prohibition release time by the manager's mobile phone 5 will be described.

Operations in the process of starting, using, and stopping the hydraulic excavator will be described.

Before the operation starts, before the anti-theft device 3 receives the short message from the mobile phone 5, the prohibition release time measurement part 51 does not set the prohibition release time, and the prohibition release time is zero, and the mechanical action permission and prohibition control part 52 controls the engine. The device 11 and the vehicle body controller 21 output a mechanical operation prohibition signal to maintain the prohibited state of the operation of the hydraulic excavator 1 .

In this state, when the work plan is changed, the work start time is delayed, or the work is suspended, the anti-theft device 3 maintains the prohibition state of the operation of the hydraulic excavator 1, thereby ensuring safety without being affected by changes in the work plan. sex. In addition, the operator does not need to perform any operation, and safety can be ensured without making the operator feel troublesome about safety management.

When the operation starts, the manager receives a contact from the operator in advance, and sends a short message containing the input number corresponding to the mobile phone 5 from the mobile phone 5 to the anti-theft device 3 before the operation starts.

When the information receiving part 41 received the short message by the communication device 32, the manager judging part 42 judged that it was the manager's mobile phone 5 but not information for storing or updating, and the phone number of the mobile phone 5 and the recorded The short message input number is output to the identification information collation unit 43 as identification information. The identification information collation unit 43 compares the input identification information with the identification information stored in the storage unit 46 , and if the identification information matches, outputs the corresponding release valid time to the prohibition release time measurement unit 51 . The prohibition release time measurement unit 51 sets the release effective time as the prohibition release time, and starts counting down. During the period until the prohibition release time elapses, if the prohibition release time is not zero, the mechanical operation permission/prohibition control unit 52 outputs the mechanical operation permission signal to the engine controller 11 and the vehicle body controller 21, and the operation prohibition state of the hydraulic excavator 1 is released and can be started.

When the prohibited state is released, the operator operates the key switch 12 to the ON position to supply power, and further operates the key switch 12 to the start position to start the engine 13 . In addition, when the operator operates the door lock lever to the unlocked position, the door lock valve 23 is operated to communicate the pilot pressure, thereby allowing operation of the front device and the like. Once the hydraulic excavator 1 is started, the release of the prohibited state is maintained. In addition, the operator does not need to input identification information or the like in a series of operations of starting the hydraulic excavator 1 .

Thereby, the hydraulic excavator 1 can be started without making the operator feel troublesome for safety management, and can be continuously used thereafter. Administrators can perform security management through remote operations.

On the other hand, although the prohibition state of the operation of the hydraulic excavator 1 is released as described above, when the work is subsequently suspended due to changes in the weather or the like, the prohibition release time measuring unit 51 counts down, and when the prohibition When the 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. The release effective time set as the prohibition release time is a time (for example, 60 minutes) shorter than when a thief attempts to steal the hydraulic excavator 1 .

That is, even when the operation plan is out of the way, for example, when the scheduled operation is suspended later, the operation of the hydraulic excavator 1 can be automatically disabled, thereby enabling the operation to be performed without being affected by changes in the operation plan. Ensure security. In addition, in this case, since the operator does not need to notify the manager of the suspension of work, safety can be ensured without making the operator feel troublesome about safety management.

When the work is finished, the operator operates the key switch 12 to the OFF position to stop the power supply and the engine, then the key signal judging section 48 judges the key OFF signal, and the prohibition release time measuring section 51 inputs the key OFF signal, and starts counting down. Measure the elapse of the prohibition release time. When the prohibition release time elapses and becomes zero, the mechanical operation permission/prohibition control unit 52 outputs a mechanical 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 ends earlier than scheduled, the operation of the hydraulic excavator 1 is automatically prohibited after the work is completed, thereby ensuring safety without being affected by changes in the work plan. . In addition, in this case, since the operator does not need to notify the manager that the work is completed, safety can be ensured without making the operator feel troublesome about safety management.

Furthermore, when the work is finished, the screen display unit 47 inputs the 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 release time clear screen, the prohibition release time clearing unit 53 outputs a command signal to reset the prohibition release time to zero to the prohibition release time measurement unit 51 even during the elapse of the prohibition release time. When the prohibition release time becomes zero, the mechanical operation permission/prohibition control unit 52 outputs a mechanical operation prohibition control signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited.

That is, if the prohibition release time clear screen is operated after the work is completed, the operation of the hydraulic excavator 1 is immediately prohibited, thereby ensuring safety more reliably without being affected by changes in the work plan. In addition, in this case, since the operator does not need to notify the manager that the work has been completed, safety can be ensured without making the operator feel troublesome about safety management.

Next, the operation when the hydraulic excavator 1 that has been started once is stopped and restarted will be described.

During a short rest such as a lunch break, the operator operates the key switch 12 to the OFF position to stop the power supply and the engine, then the key signal judging section 48 judges the key OFF signal, and the prohibition release time measuring section 51 inputs the key OFF signal, then Set the release effective time as the prohibition release time again, start countdown, and measure the elapse of the prohibition release time. During the period until the prohibition release time elapses and the prohibition release time is not zero, the mechanical operation permission/prohibition control unit 52 outputs the mechanical operation permission signal to the engine controller 11 and the vehicle body controller 21 to maintain the release of the prohibition state.

At this time, when the operator operates the key switch 12 to the ON position, power supply is performed, and when the key switch 12 is further operated to the start position, the engine 13 is restarted. Also, when the operator operates the door lock lever to the unlocked position, the door lock valve 23 is operated to communicate the pilot pressure, enabling operations on the front device and the like again. In addition, the operator does not need to input verification information (password, identification information) during the series of restarting operations of the hydraulic excavator 1 .

Accordingly, the hydraulic excavator 1 can be restarted without making the operator feel troublesome for safety management.

On the other hand, when the temporary pause is longer than predetermined or the work after the short pause is suspended due to changes in the situation, the prohibition release time measuring part 51 counts down, and when the prohibition release time passes and becomes zero, the machine The operation permission/prohibition control unit 52 outputs a mechanical 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, even when the operation is not planned, for example, when the short-term rest is longer than scheduled or the work after the short-term rest is interrupted due to a change in the situation, the operation of the hydraulic excavator 1 can be automatically disabled. , thereby ensuring safety without being affected by changes in the work plan. In addition, in this case, since the operator does not need to notify the manager of work suspension, safety can be ensured without making the operator feel troublesome about safety management.

Next, the operation in the case of setting the prohibition release time by the mobile phone 6 of the operator will be described.

In the case of setting the prohibition release time by the manager's mobile phone 5 as described above, the manager needs to receive a notification from the operator in advance, but the communication between the manager and the operator may not be thorough.

In this case, the operator transmits a short message describing the input number from the mobile phone 6 to the anti-theft device 3 before the work starts.

When the information receiving part 41 received the short message by the communication device 32, the manager's judging part 42 judged that it was not the mobile phone 5 of the manager, and the phone number of the mobile phone 6 and the short message input number of the record were output as identification information to Identification information collation unit 43 . The identification information collation 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 release effective time to the prohibition release time measurement unit 51 . The prohibition release time measurement unit 51 sets the release effective time as the prohibition release time, and starts counting down. During the period until the prohibition release time elapses, the prohibition release time is not zero, the mechanical operation permission/prohibition control unit 52 outputs the mechanical operation permission signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited. is released and can be started.

When the prohibited state is released, if the operator operates the key switch 12 to the ON position, power is supplied, and if the key switch 12 is further operated to the start position, the engine 13 is started. In addition, when the operator operates the door lock lever to the unlocked position, the door lock valve 23 is operated to communicate the pilot pressure, thereby making it possible to operate the front device and the like. That is, the operator can start the hydraulic excavator 1 only by sending a short message from the mobile phone 6 .

Accordingly, the hydraulic excavator 1 can be started without making the operator feel troublesome for safety management without using the manager's mobile phone 5 .

Operations other than this are the same as when setting the prohibition release time on the manager's mobile phone 5 .

Next, operation|movement in the case of inputting the password from the input terminal 31 with which the anti-theft device 3 is equipped, and setting prohibition release time is demonstrated.

Hydraulic excavator 1 sometimes works in the mountains where mobile phones are not connected. In this case, anti-theft device 3 cannot receive short messages from mobile phone 5 and mobile phone 6, and the action of hydraulic excavator 1 is in a prohibited state.

In the prohibited state, when the operator operates the key switch 12 to the ON position, the power supply starts and the display device 35 starts up. The prohibition release time measurement unit 51 judges that the prohibition release time is zero and the prohibition release time is not set, and outputs the judgment result to the screen display unit 47 , and the screen display unit 47 displays a password input screen for inputting a password on the display device 35 .

The operator inputs a password through the input terminal 31 . Here, the password is, for example, the telephone number of the operator's mobile phone 6 and an input number assigned by the mobile phone 6 .

The password input unit 44 outputs the password to the password checking unit 45 . The password checking part 45 compares the password input from the password input part 44 with the password (the phone number of the mobile phone and the corresponding input number) stored in the storage part 46, and if the passwords are consistent, then input from the storage part 46 corresponds to the password. and output to the prohibition release time measuring section 51. The prohibition release time measurement unit 51 sets the release effective time as the prohibition release time, and starts counting down. During the period until the prohibition release time elapses, the prohibition release time is not zero, the mechanical operation permission/prohibition control unit 52 outputs the mechanical operation permission signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited. is released and can be started.

Accordingly, even if the hydraulic excavator is in a place where a mobile phone cannot be used, the operator can start the hydraulic excavator 1 .

When the hydraulic excavator 1 was in a place where the mobile phone was not connected, when the short message from the mobile phone 5 or the mobile phone 6 was sent, the information receiving part 41 of the anti-theft device 3 moved to the place where the mobile phone was connected when the hydraulic excavator 1 After receiving the information. The identification information collation unit 43 compares the sending date information attached to the message with the internal date information acquired from the time measuring unit 56, and ignores the transmitted identification information because the date information is different, and even if the identification information matches, the identification information is ignored. The corresponding release valid time is not output to the prohibition release time measurement unit 51 .

Thereby, even if the hydraulic excavator is in a place where the mobile phone cannot be used, it is possible to prevent the prohibited state of the operation of the hydraulic excavator 1 from being erroneously released later.

Other operations are the same as the case of setting the prohibition release time by the mobile phone 5 and the mobile phone 6 .

Finally, the operation when the manager's mobile phone 5 stores and updates the verification information (telephone number of the mobile phone, input number) and the cancellation valid time in the storage unit 46 will be described.

The manager sends a short message to the anti-theft device 3 from the mobile phone 5, in which the phone number of the mobile phone 5 or 6 to be stored or updated, the input number, and the effective time for cancellation are described.

When the information receiving part 41 received the short message by the communication device 32, the manager judging part 42 judged that it was the manager's mobile phone 5 and was information for storing or updating, and the mobile phone 5 as the object was not stored in the storage part 46. In the case of the verification information and the cancellation valid time of the telephone, the verification information and the cancellation valid time are stored in the storage unit 46 in association with each other, and if the verification information and the cancellation valid time are stored, the verification information and the cancellation valid time are Time to update.

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

Therefore, according to the present embodiment, safety can be ensured without making the operator feel troublesome and without being affected by changes in the work plan. Moreover, administrators can perform security management through remote operation.

(second embodiment)

A second embodiment of the present invention will be described using FIG. 6 . FIG. 6 is a diagram showing control functions of an anti-theft controller 33A of the anti-theft device for construction machinery according to the second embodiment of the present invention. The same reference numerals are assigned to the same structures as those in the first embodiment. The difference between the first embodiment and the second embodiment is that there is no administrator judgment unit 42, identification information checking unit 43, password input unit 44, password checking unit 45, and storage unit 46, and the screen display unit 47A and the prohibition release time The measurement unit 51A is changed. That is, the anti-theft device 3A does not have a collation mechanism and a storage unit, and does not perform a coincidence judgment of the collation information, but directly sets the prohibition release time according to the input information from the mobile phone 5 (short message describing the release effective time).

The manager receives the communication from the operator in advance, and sends a short message describing the effective time of release from the mobile phone 5 to the anti-theft device 3A before the work starts.

When the message receiving unit 41 receives the short message via the communication device 32, it outputs the release effective time described in the short message to the prohibition release time measuring unit 51A. The prohibition release time measurement unit 51A sets the release effective time as the prohibition release time, and starts counting down. During the period until the prohibition release time elapses, the prohibition release time is not zero, the mechanical operation permission/prohibition control unit 52 outputs the mechanical operation permission signal to the engine controller 11 and the vehicle body controller 21, and the operation of the hydraulic excavator 1 is prohibited. is released and can be started. Other operations are the same as those of the first embodiment.

Therefore, in the present embodiment, similarly, safety can be ensured without making the operator feel troublesome and without being affected by changes in the work plan. Moreover, administrators can perform security management through remote operation.

(Other implementations)

Several embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

In the first embodiment, when the anti-theft controller 33 receives the short message that is recorded with the input number, the identification information is checked, and if the identification information is consistent, the corresponding effective time of release is set as the prohibition release time, but Also can take the following mode, that is, when receiving the short message that is recorded with input number and start time, the identification information is checked, if the identification information is consistent, then the internal date information that obtains from the time measurement part 56 and the short message When the start time described in is the same, the corresponding release effective time is set as the prohibition release time.

In the present embodiment, when the start time described in the short message arrives, the prohibited state of the operation of the hydraulic excavator 1 is released. Furthermore, even when the scheduled work is stopped, when the prohibition release time elapses and becomes zero, the operation of the hydraulic excavator 1 can be automatically brought into the prohibited state.

In the second embodiment, when the anti-theft controller 33A receives the short message that records the release effective time, the release effective time recorded in the short message is set as the prohibition release time, but the following method can also be adopted, that is, When receiving the short message that records the effective time of release and the start time, when the internal date information obtained from the time measuring part 56 is consistent with the start time recorded in the short message, the effective time of release recorded in the short message is used as the prohibition release time to set.

In the first embodiment, the communication device 32 receives the short message from the mobile phone 5 and the mobile phone 6, and uses the phone number of the mobile phone and the input number recorded in the short message as identification information, but the short message may not be used. , and only use the mobile phone number as identifying information.

In the first embodiment, the telephone number of the mobile phone and the corresponding input number are used as the password, but only the input number may be used as the password.

In the first embodiment and the second embodiment, the release time measuring units 51 and 51A count down the prohibition release time from the release effective time to zero, and judge that the prohibition release time has passed when the prohibition release time reaches zero. The prohibition release time can be counted from zero to the release valid time, and when the prohibition release time becomes the release valid time, it is judged that the prohibition release time has passed.

Similarly, in the embodiment configured as described above, safety can be ensured without making the operator feel troublesome and without being affected by changes in the work plan. Moreover, administrators can perform security management through remote operation.

In the first and second embodiments, the prohibition release time is set when the hydraulic excavator is started, and the prohibition release time is set again when the hydraulic excavator is started once and then stopped, but it is also possible to start only once Set the prohibition release time when the excavator then stops.

Since the operator does not need to input the collation information, the hydraulic excavator 1 can be restarted without making the operator feel troublesome for safety management.

In addition, even when the work is not planned, for example, when the short stop is longer than scheduled or the work is suspended after the short stop, the operation of the hydraulic excavator 1 can be automatically disabled. Ensure safety management affected by changes in the work plan. In addition, in this case, since the operator does not need to notify the manager of work suspension, safety can be ensured without making the operator feel troublesome about safety management.

Claims (10)

1. an anti-joyride device for construction machinery and equipment, makes mechanical action become illegal state at machinery during in non-action status, forbids mechanical starting, it is characterized in that, comprising:

Input information mechanism, from outside input for removing the information of illegal state of the action of described machinery; And

Mechanical action control mechanism, according to the information by described input information Mechanism input, set for removing the forbidding the releasing time of illegal state of the action of described machinery, after this only until described in forbid releasing time process during in, remove the illegal state of the action of described machinery, mechanical starting can be carried out, once machinery starting maintains the releasing of described illegal state.

2. the anti-joyride device of construction machinery and equipment as claimed in claim 1, is characterized in that,

In the situation that once the releasing of machinery starting, described illegal state is maintained, when after this mechanical action stops, described mechanical action control mechanism is forbidden the releasing time described in again setting, and only until described in forbid releasing time process during in, maintain the releasing of described illegal state, mechanical starting can be carried out, when the described releasing time process of forbidding, make mechanical action become illegal state.

3. the anti-joyride device of construction machinery and equipment as claimed in claim 2, is characterized in that,

Described input information mechanism comprises read out instrument, and when the action of described machinery stops, described read out instrument shows forbids that the releasing time removes picture,

If forbid described in operation, the releasing time removes picture, though until described in forbid releasing time process during in, described mechanical action control mechanism also makes mechanical action become illegal state again.

4. the anti-joyride device of construction machinery and equipment as claimed in claim 1 or 2, is characterized in that,

Described input information mechanism comprises:

Storage part, stores cross-check information and releasing effective time accordingly; And

Check mechanism, by the cross-check information from outside input, be that password or identifying information and the cross-check information that is stored in described storage part compare,

When checking cross-check information that mechanism compares when consistent by described, described mechanical action control mechanism is in being stored in described storage part and corresponding with described cross-check information described releasing effective time forbid that as described the releasing time sets.

5. the anti-joyride device of construction machinery and equipment as claimed in claim 4, is characterized in that,

Described mechanical action control mechanism comprises:

Forbid removing time instrumentation mechanism, when checking cross-check information that mechanism compares when consistent by described, in being stored in described storage part and corresponding with described cross-check information described releasing effective time forbid that as described the releasing time sets, and described in instrumentation, forbid the process of the time of removing; And

Control mechanism is forbidden in mechanical action license, described forbid the releasing time through before, remove the illegal state of mechanical action, when the described releasing time process of forbidding, again make mechanical action become illegal state.

6. the anti-joyride device of construction machinery and equipment as claimed in claim 4, is characterized in that,

Described input information mechanism also comprises that supvr is with input set mechanism, described supvr inputs cross-check information and removes effective time via wireless communication networks with input set mechanism, the cross-check information of this input and releasing are stored in described storage part effective time accordingly, and, the in the situation that of storing cross-check information and remove effective time in described storage part, this cross-check information and releasing are upgraded effective time.

7. the anti-joyride device of construction machinery and equipment as claimed in claim 4, is characterized in that,

Described input information mechanism comprises:

Be located at the read out instrument in the operator's compartment of construction machinery and equipment; And

Password Input picture disply mechanism, described Password Input picture disply mechanism, when forbidding removing the time described in not setting, shows for input the Password Input picture of password as described input message on described read out instrument.

8. the anti-joyride device of construction machinery and equipment as claimed in claim 4, is characterized in that,

Described input information mechanism also comprises mobile phone message acceptance division, and this mobile phone message acceptance division is for inputting as described input message and the identifying information sending from vehicular telephone.

9. the anti-joyride device of construction machinery and equipment as claimed in claim 8, is characterized in that,

As described input message, from the identifying information of vehicular telephone transmission, be short message,

Described input information mechanism compares date of shipping information and inner date and time information appended in described short message, while sending from vehicular telephone, in the situation that date and time information is different, ignores the identifying information of transmission.

10. an anti-joyride device for construction machinery and equipment, makes mechanical action become illegal state at machinery during in non-action status, forbids mechanical starting, it is characterized in that, comprising:

Input information mechanism, from outside input for removing the information of illegal state of the action of described machinery; And

Mechanical action control mechanism, according to the information by described input information Mechanism input, remove the illegal state of the action of described machinery, mechanical starting can be carried out, once the in the situation that of machinery starting, after the action of machinery while stopping, described mechanical action control mechanism is set and is forbidden the releasing time, and only until described in forbid releasing time process during in, maintain the releasing of described illegal state, mechanical starting can be carried out, when the described releasing time process of forbidding, make mechanical action become illegal state.

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