JP2005280992A - Management device of industrial vehicle, management system of industrial vehicle and industrial vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a management device of an industrial vehicle and the industrial vehicle, for enabling management from a viewpoint of whether or not driving of the industrial is safely performed. <P>SOLUTION: This management device has an operation detecting means 42 for detecting a driving operation state of the industrial vehicle, a frequency calculating means 43 for calculating the occurrence frequency of predetermined unsafe operation of the vehicle with every unsafe operation on the basis of detection results detected by the operation detecting means 42, and a storage means 44 for storing the occurrence frequency of the unsafe operation calculated by the frequency calculating means 43. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an industrial vehicle management apparatus, an industrial vehicle management system, and an industrial vehicle.

  2. Description of the Related Art Conventionally, an industrial vehicle is known that includes a management device for grasping the driving operation state of the industrial vehicle (see, for example, Patent Document 1). The management device described in Patent Document 1 is an online collection device that collects vehicle measurement data and driving state data, and data indicating the driving operation state of the vehicle via various sensors provided in the vehicle. Collected. And the maintenance work of an industrial vehicle is performed based on the data collected by the said management apparatus.

Japanese Patent Laid-Open No. 2002-187689 (page 4-5, FIG. 1)

  However, the industrial vehicle management apparatus described in Patent Document 1 collects data for performing more efficient maintenance work, and is a viewpoint of whether or not the industrial vehicle is safely operated. We cannot answer the request to enable management from.

  The present invention has been made in view of the above circumstances, and enables management from the viewpoint of whether or not the operation of an industrial vehicle is performed safely, an industrial vehicle management device, an industrial vehicle management system, and The purpose is to provide industrial vehicles.

Means and effects for solving the problems

  An industrial vehicle management apparatus according to the present invention for achieving the above object is a management apparatus provided in an industrial vehicle, comprising: an operation detection unit for detecting a driving operation state of the vehicle; and the operation detection unit. Based on the detected result, the number calculation means for calculating the number of occurrences of the predetermined unsafe movement of the vehicle for each unsafe movement, and the number of occurrences of the unsafe movement calculated by the number calculation means And a storage means for storing.

  According to this configuration, the number of occurrences of a predetermined unsafe operation can be grasped based on the detection result of the driving operation state of the vehicle. Therefore, it is possible to manage whether or not the industrial vehicle is safely operated, and it can also be used for guidance to workers.

  Further, the industrial vehicle management apparatus according to the present invention provides a sudden turning operation in which a turning acceleration detection value during a turning operation of the vehicle is equal to or greater than a predetermined threshold as an unsafe operation in which the number of occurrences is calculated by the number calculation means. A sudden steering operation in which the detected value of the steering direction change rate during the steering direction switching operation of the vehicle is equal to or greater than a predetermined threshold, and the speed of the vehicle is detected and the seat belt wearing signal is not detected A seat belt non-wearing operation, a collision operation in which an impact detection value when the vehicle collides to the outside is a predetermined threshold value or more, and an overloading operation in which a load weight detection value is a predetermined threshold value or more. It is desirable that at least one of them is included.

  According to this configuration, the number of occurrences of at least one of a sudden turning operation, a sudden steering operation (for example, a sudden steering operation that suddenly operates the steering wheel), a seat belt non-wearing operation, a collision operation, or an overloading operation is performed as an unsafe operation. Can be grasped. Thereby, it is possible to accurately grasp and manage whether or not the operation of the industrial vehicle is performed safely.

  The industrial vehicle management apparatus according to the present invention preferably detects a product of the vehicle speed and the angular velocity of the vehicle as the turning acceleration detection value.

  According to this configuration, the product of the vehicle speed and the angular velocity is detected, and when the detected value is equal to or greater than a predetermined value, it is possible to easily detect that the vehicle has performed a sudden turning operation. Therefore, it is possible to accurately grasp the occurrence of a sudden turning motion and manage the number of occurrences.

  The industrial vehicle management apparatus according to the present invention preferably detects the rate of change in angular velocity of the vehicle as the detected value of the rate of change in steering direction.

  According to this configuration, when the angular velocity change rate of the vehicle is detected and the detected value becomes equal to or greater than a predetermined value, it can be easily detected that the vehicle has performed a sudden steering operation. Therefore, it is possible to accurately grasp the occurrence of the sudden steering operation and manage the number of occurrences.

  Further, the industrial vehicle management apparatus according to the present invention is the number of times that the control operation for preventing the vehicle from falling is performed as the number of unsafe operations whose number of occurrences is calculated by the number calculation means. It is desirable that a certain number of falls prevention control be included.

  According to this configuration, the number of falls prevention control can be grasped as the number of occurrences of the unsafe operation. As a result, whether or not the industrial vehicle is safely operated can be accurately grasped and managed from the viewpoint of whether or not the industrial vehicle has been prevented from being overturned but has a possibility of leading to overturn.

  In addition, the industrial vehicle management device according to the present invention regulates the swing of the axle of the vehicle when the turning acceleration detection value during the turning operation of the vehicle is greater than or equal to a predetermined threshold as the number of overturn prevention control. It is desirable that the number of occurrences of the fall prevention control operation is included.

  According to this configuration, in order to calculate the number of times that the turning acceleration detection value is equal to or greater than the predetermined value and the overturn prevention control operation has occurred, the number of overturn prevention control operations due to the sudden turning operation is accurately grasped and the number of occurrences is managed. be able to.

  The industrial vehicle management device according to the present invention may be configured such that when the detected value of the steering direction change rate during the steering direction switching operation of the vehicle is equal to or greater than a predetermined threshold as the number of overturn prevention control times, the axle of the vehicle is It is desirable that the number of occurrences of the overturn prevention control operation for regulating the swing is included.

  According to this configuration, in order to calculate the number of times that the fall prevention control operation has occurred when the detected value of the steering direction change rate is equal to or greater than the predetermined value, the number of occurrences of the fall prevention control by the sudden steering operation is accurately grasped. Can be managed.

  Further, the industrial vehicle management device according to the present invention provides the threshold value when the number of occurrences of the sudden turning motion in which the turning acceleration detection value during the turning motion of the vehicle is equal to or greater than a predetermined threshold is calculated by the vehicle. It is desirable that the setting is made so as to be changed in accordance with at least one of the lifting height corresponding to the loading height of the load to be loaded and the weight of the load loaded on the vehicle.

  According to this configuration, the threshold value for determining the sudden turning operation is set so as to change according to at least one of the lifting height and the loaded weight. The number of times can be grasped more appropriately according to the cargo handling state of the vehicle.

  Further, the industrial vehicle management device according to the present invention provides a threshold value for calculating the number of occurrences of the sudden steering operation in which the detected value of the steering direction change rate during the steering direction switching operation of the vehicle is equal to or greater than a predetermined threshold value. Is set to be changed in accordance with at least one of the lifting height corresponding to the loading height of the load loaded on the vehicle and the weight of the load loaded on the vehicle. Is desirable.

  According to this configuration, the threshold value for determining the sudden steering operation is set so as to be changed in accordance with at least one of the lifting height and the loaded weight. The number of times can be grasped more appropriately according to the cargo handling state of the vehicle.

  The industrial vehicle management apparatus of the present invention preferably detects the acceleration of the vehicle as the impact detection value.

  According to this configuration, it is possible to easily detect that the vehicle has collided to the outside when the acceleration of the vehicle is detected and the detected value becomes a predetermined value or more. Therefore, it is possible to accurately grasp the occurrence of the collision operation and manage the number of occurrences.

  The industrial vehicle management device of the present invention further includes time measuring means, wherein the number calculating means calculates the number of occurrences of unsafe operation for each predetermined unit time measured by the time measuring means, The storage means preferably stores the number of occurrences of the unsafe operation per unit time calculated by the number calculation means.

  According to this configuration, the number of occurrences of unsafe operations per unit time can be grasped, and the occurrence frequency of unsafe operations in relation to the work time zone can be managed.

  The industrial vehicle management device according to the present invention preferably further includes a time measuring unit, and the storage unit further stores the occurrence time of each unsafe operation measured by the time measuring unit.

  According to this configuration, the occurrence time of the unsafe operation can be grasped, and the unsafe operation occurrence state in relation to the work time zone can be managed.

  The industrial vehicle management apparatus of the present invention further includes a personal code input means for inputting a personal code for specifying an operator who drives the vehicle, and the storage means is input from the personal code input means. Preferably, the personal code is stored in association with the unsafe operation for which the number of occurrences is calculated by the number calculation means.

  According to this configuration, since the unsafe operation is stored in association with the personal code, the worker who has generated the unsafe operation can be specified and managed. That is, the number of occurrences of unsafe operations for each worker can be grasped. And guidance for every worker can also be performed easily.

  The industrial vehicle management device of the present invention preferably further comprises a communication means for transmitting the contents stored in the storage means to the terminal device.

  According to this configuration, the terminal device can grasp the number of unsafe operations that have occurred in the industrial vehicle. Therefore, by collecting information from a plurality of vehicles in a remote place, the number of occurrences of unsafe operation of each vehicle can be managed intensively. In addition, vehicles can be managed individually by collecting information from individual vehicles as necessary.

  An industrial vehicle management system of the present invention for achieving the above-mentioned object is an industrial vehicle management system comprising a plurality of the above-described industrial vehicle management devices of the present invention respectively provided in a plurality of industrial vehicles, The terminal device for receiving the contents stored in the storage means from the plurality of management devices via the communication means.

According to this configuration, even when a plurality of industrial vehicles are individually operated, the number of occurrences of unsafe operation of each industrial vehicle can be collectively grasped by the terminal device.
In addition, when the plurality of management devices are each provided with a personal code input unit and store the input personal code in association with the unsafe operation in the storage unit, the worker between the plurality of industrial vehicles Even when an industrial vehicle is moved for driving, the number of occurrences of unsafe operation for each worker can be grasped collectively by the terminal device.
Therefore, it is possible to efficiently manage whether or not a plurality of industrial vehicles are safely operated, and it can also be used for guidance to workers.

  In addition, an industrial vehicle management device of the present invention for achieving the above-described object is characterized by including the above-described industrial vehicle management device of the present invention.

  According to this structure, there exists an effect similar to the management apparatus of the industrial vehicle of this invention mentioned above.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
First, the outline | summary of the industrial vehicle which concerns on this embodiment, and the management apparatus of an industrial vehicle is demonstrated. FIG. 1 is a side view of a forklift 1 that is an example of an industrial vehicle according to the present embodiment, and FIG. 2 is a schematic configuration diagram of the forklift (industrial vehicle) 1 and its management device 30.

  As shown in FIGS. 1 and 2, the forklift 1 is a front-wheel drive / rear-wheel steering four-wheel vehicle. The forklift 1 is provided with a pair of left and right outer masts 2 and an inner mast 3 that can be moved up and down. A fork 4 is suspended from the inner mast 3 so as to be able to move up and down through a chain (not shown) hung on a sprocket (not shown). The outer mast 2 is connected to a vehicle body frame 1 a that is a vehicle body of the forklift 1 via a tilt cylinder 5 so as to be tiltable. The fork 4 moves up and down when the lift cylinder 6 is driven and the inner mast 3 moves up and down.

  The front wheels 7 are provided on the left and right sides of the forklift 1, are operatively connected to the engine 9 via a diffring gear 8 and a transmission (not shown), and are driven by the power of the engine 9. A rear axle 10 as an axle extends in the vehicle width direction and is supported at the rear lower portion of the body frame 1a so as to be swingable in the vertical direction around the center pin 10a. The rear wheels 11 are provided on the left and right sides of the forklift 1 as traveling wheels, and are operatively connected to a pair of left and right piston rods of a steering cylinder (not shown) disposed on the rear axle 10, and the steering cylinder is operated by operating the handle 12. It is steered by being driven.

  As shown in FIG. 2, the forklift 1 is provided with a yaw rate sensor 21, a vehicle speed sensor 22, an acceleration sensor 23, lift sensors 24 and 25, a pressure sensor 26, and a seat belt mounting sensor 27. These sensors 21 to 27 are provided to detect the operation state of the forklift 1, and each sensor 21 to 27 is connected to the management device 30. Thereby, the output from each sensor 21-27 is each detected by the operation | movement detection means in the management apparatus 30. FIG.

  The yaw rate sensor 21 is composed of, for example, a gyroscope, is held in a predetermined direction capable of detecting the yaw rate (angular velocity) Y (rad / sec) of the vehicle body, and is assembled together with the management device 30 at the front of the vehicle body. As the gyroscope, any system such as a piezoelectric gyroscope, a gas rate gyroscope, and an optical gyroscope may be used.

  The vehicle speed sensor 22 detects the rotational speed of the differential ring gear 8 and indirectly detects the vehicle speed (vehicle speed) V of the forklift 1. The acceleration sensor 23 is assembled to the rear body frame in order to detect acceleration at the time of collision.

  The two lift height sensors 24 and 25 are respectively attached to predetermined heights of the outer mast 2. The lift height sensors 24 and 25 are, for example, limit switches, and are turned off when the lift height of the fork 4 is less than a predetermined height and turned on when the lift height of the fork 4 is higher than a predetermined height. The lift of the fork 4 is detected from the on / off combination. For example, when both the lift sensors 24 and 25 are off, the low lift is detected, when the sensor 24 is on and the sensor 25 is off, the intermediate lift is detected, and when both the sensors 24 and 25 are on, the high lift is detected. can do.

  The pressure sensor 26 is attached to the bottom of the lift cylinder 6 and detects the hydraulic pressure in the cylinder. Since the hydraulic pressure of the lift cylinder 6 is proportional to the load (load weight) loaded on the fork 4, the load (loading weight) W is indirectly detected by the pressure sensor 26.

  The seat belt wearing sensor 27 is attached to a seat belt (not shown) and detects whether or not the seat belt is being worn. The seat belt wearing sensor 27 generates a seat belt wearing signal S when the seat belt is worn, and does not generate the seat belt wearing signal S when the seat belt is not worn.

  Next, the electrical configuration of the management device 30 of the forklift 1 will be described based on the block diagram of the management device 30 shown in FIG. The management device 30 includes a CPU (Central Processing Unit) 31, ROM (Read Only Memory) 32, RAM (Read / Write Memory) 33, Real Time Clock IC 34, Backup Battery 35, Vehicle Speed Detection Interface (Vehicle Speed Detection I / F). ) 36, yaw rate detection interface (yaw rate detection I / F) 37, load detection interface (load load I / F) 38, collision detection interface (collision detection I / F) 39, seat belt detection interface (seat belt detection I / F) F) 40, a communication interface (communication I / F) 41, and the like.

  An output from the vehicle speed sensor 22 is input to the CPU 31 via the vehicle speed detection interface 36. Further, the CPU 31 receives the output from the yaw rate sensor 21 via the yaw rate detection I / F 37. Further, the output from the pressure sensor 26 is input to the CPU 31 via the loaded load detection I / F 38. Further, the output from the acceleration sensor 23 is input to the CPU 31 via the collision detection I / F 39. Further, the output from the seat belt wearing sensor 27 is input to the CPU 31 via the seat belt detection I / F 40.

  The ROM 32 stores a program for processing as the management device 30 and is read and executed by the CPU 31 as appropriate. Further, the RAM 33 stores data generated by executing a program for processing the management device 30. Note that a backup battery 35 is connected to the RAM 33 so that power is supplied from the backup battery 35 when the power supply is cut off, so that stored data is not lost.

  The real-time clock IC 34 is connected to the CPU 31 and receives time-related data and measures time. Note that a backup battery 35 is connected to the real-time clock IC 34, and power is supplied from the backup battery 35 when the power supply is cut off.

  The communication interface 41 outputs data generated by executing a program for processing as the management device 30 to the computer (terminal device) 60 connected to the outside. The communication interface 41 may be wireless communication or wired communication.

  In the management device 30, each of the units (42 to 46) described later is constructed by combining the hardware and software described above.

  FIG. 4 is a functional block diagram showing the configuration of the management device 30. As shown in FIG. As shown in this figure, the management device 30 includes an operation detection unit (operation detection unit) 42, a number calculation unit (number calculation unit) 43, a storage unit (storage unit) 44, and a time measurement unit (time measurement unit). ) 45 and a communication unit (communication means) 46.

  The operation detection unit 42 detects the operation state of the forklift 1, and includes the above-described yaw rate detection I / F 37, vehicle speed detection I / F 36, seat belt detection I / F 40, collision detection I / F 39, and load detection. It is comprised by I / F38. As a result, the motion detection unit 42 detects the yaw rate Y at the yaw rate detection I / F 37, the vehicle speed V at the vehicle speed detection I / F 36, the seat belt wearing signal S at the seat belt detection I / F 40, and the impact at the collision detection I / F 39. The value (acceleration A in this embodiment) is detected by the load detection I / F 38, and the load weight W is detected.

  The number calculation unit 43 is realized by the CPU 31 and calculates the number of occurrences of a predetermined unsafe operation of the forklift 1 for each unstable operation based on the detection result detected by the operation detection unit 42. The number calculation unit 43 includes a sudden turning operation number calculation unit 47, a seat belt non-wearing operation number calculation unit 48, a collision operation number calculation unit 49, and an overloading operation number calculation unit 50. The number of occurrences of each unsafe operation (rapid turning operation, seat belt non-wearing operation, collision operation, overloading operation) is calculated by each of these calculation units (47 to 50).

  The sudden turning motion number calculating unit 47 determines that the sudden turning motion has occurred when the detected turning acceleration value during the turning motion of the forklift 1 is equal to or greater than a predetermined threshold value set in advance. Each time it is determined that a sudden turning motion has occurred, the number of occurrences is accumulated. The turning acceleration during the turning operation (centrifugal acceleration acting in the lateral direction of the forklift 1 during turning) Gs is the difference between the yaw rate Y detected by the yaw rate detection I / F 37 and the vehicle speed V detected by the vehicle speed detection I / F 36. It is calculated and detected as a product Y · V (Gs = Y · V) (that is, a product of the vehicle speed V and the yaw rate Y, which is an angular velocity, is detected as the detected turning acceleration value Gs). If the turning acceleration detection value Gs is greater than or equal to a predetermined threshold value, it is determined that a sudden turning action has occurred. The CPU 31 receives the output from the lift height sensors 24 and 25 via a lift height detection interface (not shown), and is input via the lift height detection interface when determining the occurrence of a sudden turning motion. It may be determined based on the detection results of the lift height sensors 24 and 25. For example, the threshold value of the turning acceleration Gs, which is a condition for determining that a sudden turning operation has occurred, is changed and set depending on whether the state is low, high, or high. Also good.

  The seat belt non-wearing operation frequency calculation unit 48 accumulates the number of occurrences every time a seat belt non-wearing operation occurs in which the operator driving the forklift 1 is driving without wearing the seat belt. To go. That is, when the vehicle speed V is detected by the vehicle speed detection I / F 36 and the wearing signal S is not detected by the seat belt detection I / F 40, it is determined that the seat belt non-wearing operation has occurred. Even if the vehicle speed V is detected, as long as the wearing signal S is detected, it is determined that no seat belt non-wearing operation has occurred. Once it is determined that the seat belt non-wearing operation has occurred, the seat belt non-wearing operation state is once canceled (for example, when the engine 9 is stopped or the seat belt wearing operation state is returned). Unless otherwise determined, it is determined that the non-wearing operation of the seat belt that has occurred continues.

  The collision operation number calculation unit 49 determines that the collision operation has occurred when the impact detection value when the forklift 1 collides outside is equal to or greater than a predetermined threshold value set in advance. Each time a collision operation occurs, the number of occurrences is accumulated. As the impact detection value, the acceleration A of the forklift 1 input via the acceleration sensor 23 and the collision detection I / F 39 is detected. That is, it is determined that a collision motion has occurred when the detected acceleration A is equal to or greater than a predetermined threshold value (when the acceleration A once exceeds the predetermined threshold value).

  The overload operation frequency calculation unit 50 determines that an overload operation has occurred when the load weight detection value W is equal to or greater than a predetermined threshold value set in advance. Each time an overload operation occurs, the number of occurrences is accumulated. Also, when the load weight detection value W once exceeds a predetermined threshold value and then falls below that threshold value, it is determined that one overload operation has ended, and the load weight detection value W again reaches the predetermined threshold value. If exceeded, it is determined that the next overload operation has occurred.

  Note that the calculation units (47 to 50) described above are not necessarily all provided, and may be provided with at least one of the calculation units (47 to 50). In addition, the number calculation unit 43 detects an acceleration detection value by calculating a difference value at a constant time interval (for example, 10 ms) of the speed detected via the vehicle speed detection I / F 36, and based on this acceleration detection value The number of occurrences of the rapid acceleration operation and the number of occurrences of the sudden deceleration operation may also be calculated.

  The storage unit 44 is configured by the RAM 33 and stores the number of occurrences of the unsafe operation calculated by the number calculation unit 43. That is, the number of occurrences of the sudden turning motion calculated by the sudden turning motion number calculation unit 47, the number of occurrences of the seat belt non-wearing motion calculated by the seat belt non-wearing motion frequency calculation unit 48, and the collision motion frequency calculation unit 49 are calculated. The number of occurrences of the collision operation performed and the number of occurrences of the overloading operation calculated by the overloading operation frequency calculation unit 50 are stored.

  The time measuring unit 45 includes a real time clock IC 34. The time data measured by the time measurement unit 45 is output to the number calculation unit 43. The number calculation unit 43 calculates the number of occurrences of unsafe operation for each predetermined unit time measured by the time measurement unit 45 based on the time data. That is, each calculation part (47-50) calculates the frequency | count of generation | occurrence | production of each unsafe operation (sudden turning operation | movement, seatbelt non-wearing operation | movement, collision operation | movement, overloading operation | movement) for every predetermined unit time. And the memory | storage part 44 memorize | stores the frequency | count of generation | occurrence | production per said unit time of each calculated unsafe operation. An example of a method for storing the number of occurrences of each unsafe operation in the RAM 33 is, for example, when the predetermined unit time is 10 minutes, and the time when the first unsafe operation is detected is 9:12 on May 6, 2003. If it is, the number of unsafe operations for 10 minutes from 9:12 is stored. When 10 minutes or more have elapsed and an unsafe operation is detected again at 9:36, the number of unsafe operations from 9:36 to 10 minutes is stored. Even if the operation of the vehicle is interrupted during these 10 minutes and the power supply to the apparatus is cut off and 10 minutes elapses, the RAM 33 holds the data by the backup battery 35. There is no problem in handling as 10-minute data from 36 minutes. Moreover, even if the vehicle is repeatedly interrupted and restarted, it is possible to continuously count and store the number of unsafe operations without any trouble by adding data for 10 minutes from 9:36.

  The communication unit 46 includes a communication I / F 41 and transmits data stored in the storage unit 44 to the computer (terminal device) 60. The storage unit 44 may delete data from the RAM 33 by transmitting data to the computer (terminal device) 60 and store new data. Alternatively, when the storage address of the RAM 33 overflows regardless of the presence or absence of transmission, the data is returned to the top address and overwritten and recorded, and only the data corresponding to the request from the computer (terminal device) 60 is retrieved from the storage unit 44. Then, it may be transmitted.

  In the computer 60, it is possible to grasp the number of occurrences of each unsafe operation from the data received from the communication unit 46. FIG. 5 exemplifies management data displayed on a predetermined screen of the computer 60 connected externally. In the example of FIG. 5, the number of occurrences of unsafe operations in a specific forklift (XX machine) on a specific day (XX year XX month XX day) is displayed in a graph. FIG. 5 shows an example in which the number of sudden turning operations, the number of collision operations, the number of overloading operations, the number of sudden acceleration operations, the number of sudden deceleration operations, and the number of seat belt non-wearing operations are displayed. Yes.

  FIG. 6 illustrates other management data displayed on the computer 60. The example of FIG. 6 is also a graph showing the number of occurrences of unsafe operation on a specific forklift (XX machine) on a specific day (XX year XX month XX day). Unlike the case, the number of occurrences of the unsafe operation is calculated every predetermined unit time and displayed together with the time zone.

  As shown in FIGS. 5 and 6, the computer 60 can grasp the number of occurrences of the unsafe operation that has occurred in the forklift 1. Therefore, by collecting information from a plurality of forklifts 1 in a remote place, the number of occurrences of unsafe operations of each forklift 1 can be managed intensively. Moreover, the forklift 1 can be individually managed by collecting information from the individual forklifts 1 as necessary. Further, as shown in FIGS. 5 and 6, by visualizing the number of occurrences of the unsafe operation, it is possible to easily grasp the occurrence state of the unsafe operation.

  The first embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various modifications are possible as long as they are described in the claims. In the first embodiment, for example, the following invention can be implemented.

(1) In the first embodiment described above, the computer 60 arranged at a remote location so as to be communicable via the communication I / F 41 has been described so that the number of occurrences of unsafe operation is displayed. 60 may be mounted. In this case, the operator operating the forklift 1 can check the number of occurrences of the unsafe operation.

(2) Each calculation unit (47, 49, 50) determines whether or not an unsafe operation has occurred by comparing each detection result with a predetermined threshold set in advance. These settings may be arbitrarily changeable. For example, the management apparatus 30 may include a threshold setting change unit that can change a predetermined threshold based on a user operation.

(3) Moreover, as shown in FIG. 7, the management apparatus 52 combined with the traveling cargo handling controller 53 may be sufficient, and also with the management apparatus 51 comprised combining the management apparatus 52 and the traveling cargo handling controller 53. There may be. The traveling cargo handling controller 53 is provided in an industrial vehicle in order to control traveling and cargo handling. The traveling cargo handling controller 53 has data relating to traveling cargo handling such as the vehicle speed V, the yaw rate Y, and the loaded weight W. Therefore, the communication interface (communication I / F) 55 of the traveling cargo handling controller 53 is connected to the communication interface (communication I / F) 54 of the management device 52, and data relating to the traveling cargo handling of the traveling cargo handling controller 53 is stored in the management device 52. The CPU 31 can be read.

(4) Moreover, the management apparatus 30 can also be comprised so that an operator's ID number can be input. In this case, the number of occurrences of unsafe operations can be grasped for each worker. In addition, the structure which grasps | ascertains the frequency | count of generation | occurrence | production of unsafe operation | movement for every operator is demonstrated in detail in the following 2nd Embodiment.

(5) Moreover, the management system of the industrial vehicle which manages the some forklift truck 1 each provided with the management apparatus 30 (or management apparatus 51) can also be comprised. This management system is configured by including a plurality of management devices 30 (or management devices 51) and computers (terminal devices) 60 provided in each forklift 1 respectively. And the computer 60 receives the content memorize | stored in each memory | storage part 44 via each communication part 46 from the some management apparatus 30 (or management apparatus 51).
According to this management system, the number of occurrences of unsafe operations of each forklift 1 can be collectively grasped by the computer 60 even when the plurality of forklifts 1 are individually operated. Therefore, it is possible to efficiently manage whether or not the operation of the plurality of forklifts 1 is performed safely, and it can also be used for guidance to workers.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. The industrial vehicle according to the second embodiment is configured by a forklift similar to the forklift 1 exemplified as the industrial vehicle according to the first embodiment, but includes the industrial vehicle management device 70 according to the second embodiment. Is different. FIG. 8 is a block diagram showing an electrical configuration of the management device 70 provided in the forklift (not shown) according to the second embodiment.

  As shown in FIG. 8, the management device 70 is similar to the management device 1 of the first embodiment in that the vehicle speed detection I / F 36, the yaw rate detection I / F 37, the load load detection I / F 38, the collision detection I / F 39, the seat A belt detection I / F 40, a CPU 31, a ROM 32, a RAM 33, a real time clock IC 34, a communication I / F 41, and a backup battery 35 are provided. Accordingly, the management device 70 includes an operation detection unit 42, a number calculation unit 43, a storage unit 44, a time measurement unit 45, and a communication unit 46, like the management device 1 of the first embodiment shown in FIG. . The management device 70 is configured to be communicable with the computer (terminal device) 60 via the communication I / F 41 as with the management device 30 (either wireless communication or wired communication may be used). ). However, the management device 70 is different from the management device 30 in that it further includes a personal code input unit 71.

  The personal code input unit 71 is connected to the CPU 31 and constitutes a personal code input means for inputting a personal code for specifying an operator who operates the forklift on which the management device 70 is mounted. The personal code input unit 71 is constituted by, for example, a numeric key switch (not shown) connected to the CPU 31 via an input interface (not shown). That is, a personal code (operator ID number) that identifies the operator is input to the management device 70 by the operation of the numeric keypad by the operator who operates the forklift on which the management device 71 is mounted.

  In the management device 70, as in the management device 30, a storage unit (storage means) 44 (not shown) configured by the RAM 33 stores the personal code input from the personal code input unit 71. At this time, in the storage unit 44, the number of occurrences of the input personal code is calculated by a number calculation unit (number calculation means) 43 (not shown) realized by the CPU 31 as in the management device 30. It is stored in association with the unsafe operation.

  The personal code input unit 71 may be anything as long as it can input a personal code. For example, input means for inputting from a keyboard other than a numeric keypad, input means for inputting by touch panel operation, input means for inputting by reading from various removable recording media such as a smart card, etc. Various means such as input means for inputting by reading can be used as the personal code input unit 71.

  FIG. 9 is a diagram illustrating an image of data stored in the storage unit 44 in association with the unsafe operation of the personal code. The image of the stored data shown in FIG. 9 is an example of a method for storing in the storage unit 44. For example, when the predetermined unit time measured by the time measuring unit 45 configured by the real-time clock IC 34 is 10 minutes as in the management device 30, the time when the first unsafe operation is detected is May 6, 2003. When it is 9:12 on the day, in the storage unit 44, the number of occurrences of each unsafe operation for 10 minutes from 9:12 corresponds to the personal code (for example, 12345) input from the personal code input unit 71. It is memorized. Then, if a worker who drives the forklift is changed during the 10 minutes from 9:12 (within a predetermined unit time) and a new personal code is input from the personal code input unit 71, The number of occurrences of each unsafe operation is stored in association with the newly entered personal code. For example, when a new personal code (98765) is input by changing a worker who operates a forklift from 9:17, and the time when the first unsafe operation after the change is detected is 9:18, In the storage unit 44, the number of occurrences of unsafe movements for 10 minutes from 9:18 is stored in association with the personal code (98765). When 10 minutes or more have passed and an unsafe operation is detected again at 9:36, the number of occurrences of 10 minutes of unsafe operation from 9:36 is stored in association with the personal code (98765). The

  In the computer 60, the number of occurrences of each unsafe operation can be grasped in association with the personal code from the data received from the communication unit 46 configured by the communication I / F 41 as in the management device 30. FIG. 10 illustrates management data similar to that in FIG. 5 displayed on a predetermined screen of the computer 60. However, unlike the case shown in FIG. 5, the number of occurrences of unsafe movements on the specific day (XX year XX month XX day) of the worker specified by the personal code (person A of personal code 12345) It is displayed as a graph. As described above, based on the data received from the management device 70, the computer 60 can grasp the number of occurrences of unsafe operations for each individual. Further, by visualizing the number of occurrences of unsafe motion for each individual, it is possible to easily grasp the occurrence status of unsafe motion of each worker.

  According to the management device 70 described above, since the unsafe operation is stored in association with the personal code, it is possible to identify and manage the worker who has generated the unsafe operation. That is, the number of occurrences of unsafe operations for each worker can be grasped. And guidance for every worker can also be performed easily. In addition, in the management apparatus 70, naturally the same effect as Embodiment 1 can also be show | played.

  The second embodiment of the present invention has been described above. However, the present invention is not limited to this embodiment, and various modifications can be made as long as they are described in the claims. In the second embodiment, for example, the following invention can be implemented.

(1) In the second embodiment, as in the first embodiment, the number of occurrences of unsafe operations is displayed on the computer 60 disposed in a remote place so as to be communicable via the communication I / F 41. However, the computer 60 may be mounted on the forklift 1 itself. In this case, the operator operating the forklift 1 can check the number of occurrences of the unsafe operation.

(2) Further, as shown in FIG. 11, the management device 73 may be combined with the traveling cargo handling controller 53 and the personal code management controller 74, or the management device 73, the traveling cargo handling controller 53, and the personal code management controller 74. May be a management device 72 configured in combination. Here, the traveling cargo handling controller 53 is configured similarly to the modification of FIG. 7 of the first embodiment. The personal code management controller 74 includes personal code input means (not shown) such as a numeric key switch. The management device 73 and the personal code management controller 74 include a communication interface (communication I / F) 54 and a communication interface (communication I / F) 75, respectively. Communication is possible. The personal code input to the personal code management controller 74 is stored in the storage unit 44 (not shown) including the RAM 33 of the management device 73 in association with the unsafe operation. The personal code management controller 74 may execute various types of information processing according to the input personal code. For example, when a specific personal code (for example, a personal code of an operator who performs safe driving with a low occurrence frequency of unsafe operation) is input, an engine start permission command for permitting engine start is given to the management device 73. You may transmit. In addition, when a specific personal code (for example, a personal code of a worker who frequently generates unsafe movements) is input, the travel speed limit (travel speed upper limit value), acceleration limit (acceleration rate upper limit value), etc. Information for regulating the forklift performance may be transmitted to the management device 73. Thus, based on the information processed according to the personal code and transmitted from the personal code management controller 74, the management device 73 can control the driving operation of the forklift according to the personal code.

(3) Moreover, the management system of the industrial vehicle which manages several forklifts each provided with the management apparatus 70 (or management apparatus 72) can also be comprised. FIG. 12 is a block diagram illustrating an industrial vehicle management system 80 according to the second embodiment of the invention. The management system 80 includes a plurality of management devices 70 and a computer (terminal device) 60 provided for each forklift. Then, the computer 60 receives the contents stored in each storage unit 44 from each of the plurality of management devices 70 via each communication unit 46.
According to this management system 80, even when a plurality of forklifts are individually operated, the number of occurrences of unsafe operations of the forklifts can be collectively grasped by the computer 60. In addition, since the plurality of management devices 70 are each provided with the personal code input unit 71 and store the input personal code in association with the unsafe operation in the storage unit 44, work between the plurality of forklifts Even when the operator moves by moving the forklift and performs the operation, the number of occurrences of the unsafe operation for each worker can be grasped collectively by the computer 60. Therefore, it is possible to efficiently manage whether or not a plurality of forklifts are operated safely, and it can also be used for guidance to workers.

(Third embodiment)
Next, a third embodiment of the present invention will be described. The industrial vehicle according to the third embodiment is configured by a forklift (hereinafter referred to as a forklift 1) similar to the forklift 1 exemplified as the industrial vehicle according to the first embodiment. However, the industrial vehicle according to the third embodiment is managed. The difference is that a device 81 is provided. FIG. 13 is a functional block diagram showing the configuration of the management device 81 provided in the forklift 1 according to the third embodiment.

  The management device 81 has an electrical configuration similar to that of the management device 30 shown in FIG. 3 of the first embodiment. As shown in FIG. 13, the management device 81 is similar to the first embodiment in that the operation detector 42 (vehicle speed detection I / F 36, yaw rate detection I / F 37, load load detection I / F 38, collision detection I / F F39, seat belt detection I / F 40), time measurement unit 45 (real-time clock IC 34), number calculation unit 43, storage unit 44, and communication unit 46 (communication I / F 41). Further, like the management device 30, the management device 81 is configured to be able to communicate with a computer (terminal device) 60 (not shown) via the communication I / F 41 (either wireless communication or wired communication). May be) In addition, the management device 81 includes a number of times calculation unit 43 that performs the same rapid turn number calculation unit 47, a seat belt non-wearing operation number calculation unit 48, a collision operation number calculation unit 49, and an overloading operation number calculation unit 50 that are the same as the management device 30. However, the management device 30 is different from the management device 30 in that the rapid steering operation frequency calculation unit 82 is further provided.

In the sudden steering operation frequency calculation unit 82, the detected value of the steering direction change rate during the steering direction switching operation of the forklift 1 (for example, when the operator operating the forklift 1 operates a steering wheel) is equal to or greater than a predetermined threshold value. In this case, it is determined that a sudden steering operation has occurred. That is, in the sudden steering operation frequency calculation unit 82, when the detected value of the steering direction change rate becomes equal to or greater than a predetermined value, the sudden steering operation is performed such that the operator who operates the forklift 1 performs an operation of suddenly rotating the steering wheel ( It is determined that a rapid steering operation has been performed. Each time it is determined that a sudden steering operation has occurred, the number of occurrences is accumulated. The steering direction change rate during the steering direction switching operation is calculated and detected as an angular velocity change rate (rad / sec ² ) corresponding to the angular acceleration of the forklift 1. That is, the yaw rate change rate ΔY / ΔT, which is the change rate of the yaw rate Y, which is the angular velocity of the vehicle body, is detected. This yaw rate change rate ΔY / ΔT calculates a difference ΔY between the previous detected value and the current detected value of the yaw rate Y detected by the yaw rate detection I / F 37 for each predetermined sampling time ΔT measured by the time measuring unit 45. The difference ΔY is calculated and detected by dividing by the sampling time ΔT. When the detected yaw rate change rate ΔY / ΔT is equal to or greater than a predetermined threshold value, it is determined that a sudden steering operation has occurred.

  Further, in the storage unit 44 in the management device 81, the number of occurrences of the sudden turning motion calculated by the sudden turning motion number calculation unit 47 and the occurrence of the seat belt non-wearing motion calculated by the seat belt non-wearing motion frequency calculation unit 48 are generated. Along with the number of times and the like, the number of occurrences of the rapid steering operation calculated by the rapid steering operation number calculation unit 82 is also stored. Then, the data stored in the storage unit 44 is transmitted to the computer 60 (not shown) via the communication unit 46.

  As in the case of the first embodiment, the externally connected computer 60 can grasp the number of occurrences of each unsafe operation from the data received from the communication unit 46. FIG. 14 exemplifies management data displayed on a predetermined screen of the computer 60. The example of FIG. 14 is the same as the example of FIG. 5 in the first embodiment, and the number of occurrences of unsafe operations on a specific forklift (XX machine) on a specific day (XX year XX month XX day). Is graphed and displayed. FIG. 14 shows an example in which the number of sudden turning operations, the number of sudden acceleration operations, the number of sudden deceleration operations, the number of seat belt non-wearing operations, and the number of overloading operations are displayed together with the number of sudden steering operations. ing.

  According to the management device 81 described above, it is possible to grasp the number of occurrences of a sudden steering operation such as a sudden steering operation that suddenly manipulates the steering wheel, and more accurately grasp whether or not the forklift 1 is operated safely. Can be managed. Note that the management device 81 can also achieve the same effects as those of the first embodiment.

  The third embodiment of the present invention has been described above. However, the present invention is not limited to this embodiment, and various modifications can be made as long as they are described in the claims. In the third embodiment, for example, the following invention can be implemented.

  (1) In the third embodiment, as described in the first embodiment, the number of occurrences of unsafe operations is displayed on the computer 60 disposed in a remote place so as to be communicable via the communication I / F 41. However, the computer 60 may be mounted on the forklift 1 itself so that an operator operating the forklift 1 can check it.

  (2) Further, as a modified example of the first embodiment, one having an electrical configuration similar to that of the management device 52 described in FIG. 7, or a management configured by combining the management device 52 and the traveling cargo handling controller 53. The present invention can be applied to a device having the same electrical configuration as that of the device 51. Moreover, the management system of the industrial vehicle which manages the some forklift 1 each provided with the management apparatus 81 can also be comprised.

  (3) Further, when the number of occurrences of the sudden steering operation in which the detected value of the yaw rate change rate that is the steering direction change rate during the steering direction switching operation is equal to or greater than a predetermined threshold is calculated, It may be set so as to be changed according to the load height (that is, the lift height corresponding to the load height) or the load weight. FIG. 15A is a diagram showing a case where the threshold value of the yaw rate change rate determined to be a sudden steering operation is set to a high value at a low lift and a low value at a high lift. For example, although not shown in FIG. 13, a lift sensor I / F (lift height detection I / F) for detecting the signal of the lift sensor 24 or 25 is provided in the operation detection unit 42 of the management device 81, and the lift sensor Based on the detection result at 24 or 25, it may be determined whether the lift is low or high, and the threshold for determining the sudden steering operation may be changed depending on whether the lift is low or high. . FIG. 15B is a diagram illustrating a case where the threshold value of the yaw rate change rate that is determined to be a sudden steering operation is set to a high value when the loaded weight is small and set to a low value when the loaded weight is large. Thus, by changing and setting the threshold value according to the lift height and the loaded weight, the number of occurrences of unsafe operation due to the sudden steering operation can be more appropriately grasped according to the cargo handling state of the forklift 1.

  (4) In addition, the threshold value when the number of occurrences of the sudden turning motion in which the detected value of turning acceleration during the turning motion is equal to or greater than a predetermined threshold is calculated is changed in accordance with the lift height of the fork and the loaded weight. It may be set so that. FIG. 16A is a diagram illustrating a case where the turning acceleration threshold value determined to be a sudden turning motion is set to a high value at a low elevation and set to a low value at a high elevation. FIG. 16B is a diagram showing a case where the threshold value of the turning acceleration determined to be a sudden turning operation is set to a high value when the loaded weight is small and set to a low value when the loaded weight is large. Thus, by changing and setting the threshold according to the lift height and the loaded weight, it is possible to more appropriately grasp the number of occurrences of the unsafe operation due to the sudden turning operation according to the cargo handling state of the forklift 1.

  (5) In addition, in the management device 81, the instability of calculating the number of unstable cargo handling operations in which the loaded weight is equal to or greater than a predetermined threshold and the vehicle speed is equal to or greater than the predetermined threshold as the number of unsafe operations. A cargo handling operation frequency calculation unit may be constructed. In other words, the unstable cargo handling operation frequency calculation unit may be constructed as a part of the frequency calculation unit 43 that calculates the number of occurrences of unsafe operation by a program or the like stored in the CPU or ROM.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. The industrial vehicle according to the fourth embodiment is configured by a forklift (hereinafter referred to as forklift 1) similar to the forklift 1 exemplified as the industrial vehicle according to the first embodiment. A mechanism is further provided.

  As shown in FIG. 17, a hydraulic damper (hydraulic cylinder) 13 is disposed between the vehicle body frame 1 a and the rear axle 10, and the vehicle body frame 1 a and the rear axle 10 are connected via the damper 13. Has been. That is, the damper 13 is connected to the vehicle body frame 1a by the cylinder 13a, and the piston rod 13c extending from the piston 13b is connected to the rear axle 10. The damper 13 is connected to the electromagnetic switching valve 14 via the first pipe P1 and the second pipe P2, and each pipe P1, P2 is a first chamber R1 partitioned by a piston 13b in the cylinder 13a. And the second chamber R2. The electromagnetic switching valve 14 is a normally closed type 2-port 2-position switching valve, and a stop valve portion 15 and a flow valve portion 16 are formed on the spool. Further, an accumulator 17 for storing hydraulic oil for compensating hydraulic oil leakage in the damper 13 is connected to the end of the third pipe P3 branched from the second pipe P2 via a check valve 18. The throttle valve 19 is provided in the second pipeline P2.

  When the spool of the electromagnetic switching valve 14 is disposed at the shut-off position shown in FIG. 17, the hydraulic oil cannot flow in / out between the two chambers R1 and R2 of the damper 13 and the rear axle 10 is locked. That is, the swing of the axle (rear axle 10) of the forklift 1 is restricted. On the other hand, when the spool position of the electromagnetic switching valve 14 is arranged at the communication position (the position where the spool is switched to the opposite side from the state shown in FIG. 17), hydraulic oil flows between the chambers R1, R2 of the damper 13. Outflow is enabled, and the rear axle 10 is in a free state in which it can freely swing. The electromagnetic switching valve 14 is controlled to be switched by a fall prevention controller 85 shown in FIG. As described above, the forklift 1 according to the fourth embodiment includes the damper 13 and the electromagnetic switching valve 14 as a mechanism for the overturning prevention control, and as a means (control device) for controlling the overturning prevention control mechanism. A fall prevention controller 85 is provided. In addition, a pair of stoppers 1b are provided at positions below the body frame 1a so as to be able to contact the rear axle 10, thereby limiting a range in which the rear axle 10 can swing to the maximum extent. ing.

  FIG. 18 is a block diagram showing an electrical configuration of the industrial vehicle management devices 83 and 84 according to the fourth embodiment. These management devices 83 and 84 are provided in the forklift 1 according to the fourth embodiment. The management device 84 is configured in the same manner as the management device 52 shown in FIG. 7 which is a modification of the first embodiment. That is, the management device 84 includes a collision detection I / F 39, a seat belt detection I / F 40, a CPU 31, a ROM 32, a RAM 33, a real-time clock IC 34, a communication I / F 41/54, and a backup battery 35. The management device 84 is configured as a management device combined with the traveling cargo handling controller 53 and the overturn prevention control controller 85. On the other hand, the management device 83 is configured as a management device in which the management device 84, the traveling cargo handling controller 53, and the overturn prevention control controller 85 are combined.

  The traveling cargo handling controller 53 has data relating to traveling cargo handling such as the vehicle speed V, the yaw rate Y, and the loaded weight W. Then, it is connected to the communication I / F 54 of the management device 84 via the communication I / F 55, and the data related to the traveling cargo handling of the traveling cargo handling controller 53 can be read by the CPU 31 of the management device 52.

  Further, the overturn prevention control controller 85 controls the above-described overturn prevention control mechanism so that a control operation for preventing the forklift 1 from overturning is performed. That is, excitation / demagnetization switching control of the electromagnetic switching valve 14 is performed. The overturn prevention controller 85 determines whether or not a sudden turning operation or a sudden steering operation has been performed, and shuts off the electromagnetic switching valve 14 when determining that these operations have been performed. The rear axle 10 is locked by switching to the position (the axle swing is restricted). That is, the overturn prevention control controller 85 calculates the product of the turning acceleration detection value Gs during the turning operation of the forklift 1 (that is, the yaw rate Y detected by the yaw rate detection I / F 37 and the vehicle speed V detected by the vehicle speed detection I / F 36). Y · V) is equal to or greater than a predetermined threshold, and the steering direction change rate ΔY / ΔT (that is, the rate of change of the yaw rate Y that is the angular velocity of the vehicle body) during the steering direction switching operation of the forklift 1 is equal to or greater than the predetermined threshold. In such a case, control is performed so that the fall prevention control operation is performed. This fall prevention control controller 85 holds data relating to whether or not the fall prevention control operation has been performed (data relating to “ON” and “OFF” of the fall prevention control), and is managed via the communication I / F 86. It is connected to the communication I / F 54 of the device 84. As a result, the data regarding whether the fall prevention control operation state of the fall prevention control controller 85 is the “ON (control“ ON ”)” state or the “OFF (control“ OFF ”) state. Can be read by the CPU 31 of the management device 52.

  In these management devices 83 and 84, the management device 84 constitutes a part of a number calculation unit (not shown) for calculating the number of occurrences of unsafe operation by a program stored in the CPU 31 or the ROM 32. A fall prevention control frequency calculation unit (not shown) is constructed. Based on the above-mentioned data received from the fall prevention control controller 85, the fall prevention control frequency calculation unit calculates the number of occurrences of the unsafe operation by the sudden turning operation and the fall prevention by the sudden steering operation based on the above-mentioned data received from the fall prevention control controller 85. The number of occurrences of the control action is calculated.

  Further, in the management devices 83 and 84, the number of occurrences of the fall prevention control operation calculated by the fall prevention control frequency calculation unit by the storage unit (not shown) configured by the RAM 33 is the number of occurrences of other unsafe operations. It is memorized with. Then, the data stored in the storage unit is transmitted to the computer 60 via the communication I / F 41.

  As in the case of the first embodiment, the externally connected computer 60 can grasp the number of occurrences of each unsafe operation from the data received from the communication I / F 41. FIG. 19 exemplifies management data displayed on a predetermined screen of the computer 60. The example of FIG. 19 shows the number of occurrences of unsafe operation on a specific forklift (XX machine) on a specific day (XX year XX month XX day) in the same manner as the example of FIG. 5 in the first embodiment. It is displayed as a graph. FIG. 19 shows an example in which the number of sudden acceleration operations, the number of sudden deceleration operations, the number of seat belt non-wearing operations, and the number of overloading operations are displayed together with the number of Y locks and the number of lateral G locks. Here, the number of Y-locks is the number of times that the overturn prevention control operation (operation in which the rear axle 10 is locked when the yaw rate change rate ΔY / ΔT is equal to or higher than a predetermined threshold) by the sudden steering operation is performed. The number of yaw rate lock occurrences is shown. Further, the number of times of lateral G lock is the number of times that the overturn prevention control operation (operation in which the lateral G (turning acceleration Gs) is equal to or higher than a predetermined threshold and the rear axle 10 is locked) by the sudden turning operation is performed. The number of occurrences of G lock is shown.

  According to the management devices 83 and 84 described above, it is possible to grasp the number of falls prevention control as the number of occurrences of the unsafe operation. As a result, whether or not the forklift 1 is operated safely can be accurately grasped and managed from the viewpoint of whether or not an operation that may prevent the fall but may lead to a fall is performed.

  The fourth embodiment of the present invention has been described above. However, the present invention is not limited to this embodiment, and various modifications can be made as long as they are described in the claims. In the fourth embodiment, for example, the following invention can be implemented.

  (1) In the fourth embodiment, as in the first embodiment, the number of occurrences of unsafe operations is displayed on the computer 60 disposed in a remote place so as to be communicable via the communication I / F 41. However, the computer 60 may be mounted on the forklift 1 itself so that an operator operating the forklift 1 can check it.

  (2) Moreover, the management system of the industrial vehicle which manages the some forklift 1 provided with the management apparatus 83 or 84, respectively can also be comprised.

  (3) Further, in the case where an unstable cargo handling operation in which the loaded weight is equal to or greater than a predetermined threshold and the vehicle speed is equal to or greater than the predetermined threshold occurs in the overturn prevention control frequency calculation unit constructed in the management device 84. The number of occurrences of the overturning prevention control operation that restricts the axle swing (locks the rear axle 10) may be calculated as the number of overturning prevention control operations. In this case, the management device 84 receives data regarding whether or not the overturn prevention control operation by the unstable cargo handling operation has been performed from the overturn prevention control controller 85, and calculates the number of occurrences of the overturn prevention control operation based on this data. become.

It is the side view which illustrated the forklift as an industrial vehicle concerning one embodiment of the present invention. It is a schematic block diagram which shows the industrial vehicle shown in FIG. 1, and the management apparatus which concerns on 1st Embodiment of this invention. It is a block diagram of the management apparatus shown in FIG. It is a functional block diagram of the management apparatus shown in FIG. It is a figure which shows the specific example in the case of using the management apparatus shown in FIG. 3, and displaying management data on an external terminal. It is a figure which shows the specific example in the case of using the management apparatus shown in FIG. 3, and displaying management data on an external terminal. It is a block diagram which shows the management apparatus which concerns on the modification of 1st Embodiment. It is a block diagram of the management apparatus which concerns on 2nd Embodiment of this invention. FIG. 9 is a diagram illustrating an image of data stored in a storage unit in association with an unsafe operation in the management device illustrated in FIG. 8. It is a figure which shows the specific example in the case of using the management apparatus shown in FIG. 8, and displaying management data on an external terminal. It is a block diagram which shows the management apparatus which concerns on the modification of 2nd Embodiment. It is a block diagram which illustrates the management system of the industrial vehicle which concerns on 2nd Embodiment. It is a functional block diagram of the management apparatus which concerns on 3rd Embodiment of this invention. It is a figure which shows the specific example in the case of using the management apparatus shown in FIG. 13, and displaying management data on an external terminal. It is a figure explaining the setting of the threshold value of the yaw rate change rate judged to be a sudden steering operation in the management apparatus shown in FIG. It is a figure explaining the setting of the threshold value of the turning acceleration judged as a sudden turning operation | movement in the management apparatus shown in FIG. It is a figure explaining the mechanism for the fall prevention control in the forklift as an industrial vehicle which concerns on 4th Embodiment of this invention. It is a block diagram of the management apparatus which concerns on 4th Embodiment of this invention. It is a figure which shows the specific example in the case of using the management apparatus shown in FIG. 18, and displaying management data on an external terminal.

Explanation of symbols

1 Forklift 30 Management Device 31 CPU
33 RAM
36 Vehicle speed detection interface 37 Yaw rate detection interface 38 Load detection interface 39 Collision detection interface 40 Seat belt detection interface 42 Motion detection unit (motion detection means)
43 Number calculation section (number calculation means)
44 storage unit (storage means)
47 Number of sudden turning motions calculation unit 48 Seat belt non-wearing motions frequency calculation unit 49 Collision motion frequency calculation unit 50 Overloading motion frequency calculation unit

Claims (16)

A management device provided in an industrial vehicle,
An operation detecting means for detecting a driving operation state of the vehicle;
Based on the detection result detected by the motion detection means, a frequency calculation means for calculating the number of occurrences of a predetermined unsafe motion of the vehicle for each unsafe motion,
Storage means for storing the number of occurrences of unsafe movements calculated by the number calculation means;
An industrial vehicle management device comprising:   As an unsafe operation in which the number of occurrences is calculated by the number calculation means, a sudden turning operation in which a turning acceleration detection value during a turning operation of the vehicle is a predetermined threshold or more, and a steering direction during a steering direction switching operation of the vehicle A sudden steering operation in which the detected value of the change rate is equal to or greater than a predetermined threshold; a seat belt non-wearing operation in which the speed of the vehicle is detected and a seat belt wearing signal is not detected; and At least one of a collision operation in which the impact detection value when the vehicle collides with the vehicle is greater than or equal to a predetermined threshold and an overloading operation in which the load weight detection value is greater than or equal to the predetermined threshold. The industrial vehicle management device according to claim 1.   The industrial vehicle management device according to claim 2, wherein a product of a speed of the vehicle and an angular velocity of the vehicle is detected as the turning acceleration detection value.   The industrial vehicle management device according to claim 2, wherein a change rate of an angular velocity of the vehicle is detected as a detection value of the steering direction change rate.   The number of unsafe operations for which the number of occurrences is calculated by the number calculating means includes the number of times of overturn prevention control that is the number of times that the control operation for preventing the vehicle from falling is performed. The industrial vehicle management device according to any one of claims 1 to 4.   The number of times of overturning prevention control includes the number of times of occurrence of overturning prevention control operation that restricts the swing of the axle of the vehicle when the detected value of turning acceleration during the turning operation of the vehicle is equal to or greater than a predetermined threshold. The industrial vehicle management device according to claim 5.   As the number of times of overturning prevention control, when the detected value of the steering direction change rate during the steering direction switching operation of the vehicle is greater than or equal to a predetermined threshold value, The industrial vehicle management device according to claim 5, wherein the industrial vehicle management device is included.   The threshold value when the number of occurrences of the sudden turning motion in which the turning acceleration detection value during the turning motion of the vehicle is equal to or greater than a predetermined threshold is calculated is the lift height corresponding to the loading height of the load loaded on the vehicle, The industrial vehicle management according to claim 2 or 3, wherein the vehicle is set so as to be changed in accordance with at least one of a weight of a load loaded on the vehicle. apparatus.   The threshold when the number of occurrences of the sudden steering operation in which the detected value of the steering direction change rate during the steering direction switching operation of the vehicle is equal to or greater than a predetermined threshold is calculated based on the loading height of the load loaded on the vehicle. 5. The apparatus according to claim 2, wherein the height is set so as to be changed according to at least one of a corresponding lift height and a weight of a load loaded on the vehicle. Industrial vehicle management device.   The industrial vehicle management apparatus according to claim 2, wherein an acceleration of the vehicle is detected as the impact detection value. It further comprises time measuring means,
The number-of-times calculating means calculates the number of occurrences of unsafe operation for each predetermined unit time measured by the time measuring means,
The industrial vehicle according to any one of claims 1 to 10, wherein the storage unit stores the number of occurrences of the unsafe operation per unit time calculated by the number calculation unit. Management device. It further comprises time measuring means,
The industrial vehicle management device according to any one of claims 1 to 10, wherein the storage unit further stores the occurrence time of each unsafe operation measured by the time measurement unit. A personal code input means for inputting a personal code for specifying an operator who drives the vehicle;
The storage means stores the personal code input from the personal code input means in association with the unsafe operation whose number of occurrences is calculated by the number calculation means. Item 13. The industrial vehicle management device according to any one of Item 12.   The industrial vehicle management device according to any one of claims 1 to 13, further comprising communication means for transmitting the contents stored in the storage means to a terminal device. An industrial vehicle management system comprising a plurality of management devices according to claim 14 provided respectively in a plurality of industrial vehicles,
An industrial vehicle management system comprising the terminal device that receives contents stored in the storage means from the plurality of management devices via the communication means.   An industrial vehicle comprising the management device according to any one of claims 1 to 14.

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