JP6960209B2 - Deck crane system - Google Patents

Description

The present invention relates to a deck crane system.

Some ships are equipped with a deck crane (lifting machine) as a machine for unloading and unloading cargo. Patent Document 1 describes a hydraulic motor that is rotationally driven by receiving the supply of hydraulic oil, a hydraulic winch that uses the hydraulic motor, and a deck crane (raising machine) that uses the hydraulic winch.

Further, although it is not a deck crane but a crane having a traveling body, as a device for inspecting the operation of the crane, it is attached to a mechanical system device for driving a traveling body traveling on the crane body in Patent Document 2, and is a mechanical system. Mechanical system detecting means for detecting physical quantity, electrical system detecting means for detecting electrical system physical quantity attached to electrical equipment for driving a traveling body, mechanical system signal and electrical system detected by mechanical system detecting means An automatic inspection device for a crane including an A / D converter for converting an electrical system signal detected by the detection means into a digital signal and a processing device for processing the digital signal is described.

JP-A-2002-220189 Japanese Unexamined Patent Publication No. 2000-16758

Since the deck crane moves with the ship, the opportunity for maintenance is limited. For deck cranes, parts are replaced after checking the wear of each part during maintenance, but there is a limit to grasping the condition of the deck crane only by inspection during maintenance.

Here, if parts are replaced for prevention every time maintenance is performed, there is a problem that maintenance takes time and many replacement parts are required. In addition, if a failure occurs in an unintended place without replacing parts, the deck crane cannot be used or repairs are required in a place where there is no maintenance equipment, resulting in a decrease in utilization efficiency.

An object of the present invention is to solve the above problems and to provide a deck crane system capable of accurately grasping the state of a deck crane.

In order to solve the above-mentioned problems and achieve the object, a deck crane including a hydraulic circuit including a hydraulic pump, a main motor for driving the hydraulic pump, an operation unit for operating each unit, and a control device for controlling operation, and the above. It is characterized by having an operation status detection device that acquires operation information from a control device and a storage device that stores data detected by the operation status detection device.

Further, the operation information includes the current value of the traction motor, the operating status of the traction motor, the operation of the alarm buzzer, the input operation to the operation unit, the temperature of the hydraulic oil flowing through the hydraulic circuit, the temperature of the lubricating oil, and the like. It is preferable to include at least one of the rolling moment of the deck crane and the load of cargo handling.

In addition, the operation status detection device includes a first data creation unit that creates the first data that is the acquired operation information, and a second data creation unit that processes the first data to reduce the amount of data. It is preferable that the storage device has a first data storage unit that stores the first data and a second data storage unit that stores the second data.

Further, the operation status detection device has a communication unit for transmitting and receiving data by communication with another unit and a recording medium processing unit for recording the data on the recording medium, and the operation status detection device transfers the first data to the recording medium processing unit. It is preferable to record and output the second data from the communication unit.

Further, the operation status detection device causes the deck crane to execute a preset operation, acquires operation information of the deck crane when the preset operation is executed, analyzes the acquired operation information, and analyzes the deck. It is preferable to further have a self-diagnosis unit that identifies the condition of the crane.

Further, it is preferable to further have a processing device for acquiring the operation information detected by the operation status detection device.

Further, it is preferable to have a life diagnosis unit for diagnosing the life of the deck crane based on the operation information.

Further, it is preferable that the processing device has a remote monitoring unit that determines the state of the deck crane based on the operation information and identifies the cause of the failure when the deck crane fails.

According to the present invention, various data of the deck crane can be acquired by acquiring the operation information from the control device.

FIG. 1 is an overall view of a ship and a processing device equipped with the deck crane system according to the present embodiment. FIG. 2 is an overall configuration diagram showing a configuration of a deck crane according to the present embodiment. FIG. 3 is a block showing a configuration related to the control of the deck crane according to the present embodiment. FIG. 4 is a block diagram showing a schematic configuration of the processing apparatus. FIG. 5 is a flowchart showing an example of control of the deck crane system. FIG. 6 is a flowchart showing an example of control of the deck crane system. FIG. 7 is a flowchart showing an example of control of the deck crane system. FIG. 8 is a flowchart showing an example of control of the deck crane system.

An embodiment (embodiment) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiments. In addition, the components described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the components described below can be combined as appropriate. The deck crane is a cargo handling machine installed on the deck of a cargo ship and used for loading marine cargo and land work.

FIG. 1 is an overall view of a ship and a processing device equipped with the deck crane system according to the present embodiment. The deck crane system 100 includes a deck crane 1 and a processing device 106. The deck crane 1 is mounted on the deck 104 of the ship 102, and is used when the cargo handling target C is unloaded from the ship 102 and the cargo handling target C is loaded on the ship 102. In the first embodiment, the ship 102 is a cargo ship and has four deck cranes 1. The number of deck cranes 1 possessed by the ship 102 is not limited to four. The processing device 106 is arranged at a different location from the ship 102. The deck crane system 100 may include at least one deck crane 1, but may include a plurality of deck cranes 1. Further, the deck crane system 100 may be a deck crane 1 mounted on a plurality of ships 102 and one processing device 106.

FIG. 2 is an overall configuration diagram showing a configuration of a deck crane according to the present embodiment. FIG. 3 is a block showing a configuration related to the control of the deck crane according to the present embodiment. The deck crane 1 includes a swivel body 2, a hoisting device 3, an elevation device 4, a swivel device 5, a jib 6, a traction motor 20, a hydraulic circuit 22, an operation unit 28, an alarm buzzer 30 and the like. The control panel 31 and the like are included. In the first embodiment, the hoisting device 3 and the elevation device 4 are integrally configured. The swivel body 2 includes a hoisting device 3, a elevation device 4, a swivel device 5, and a jib 6. The swivel body 2 is installed on a gantry 14 provided on the ship 102. The swivel body 2 can rotate about an axis Zr orthogonal to the support surface 14P of the gantry 14. The swivel body 2 has a main body 2a in which each part is installed and a driver's cab 2b operated by the driver during work.

The jib 6 is a rod-shaped member and has a pulley 8 at a tip 6Tt. The end of the jib 6 opposite to the tip 6Tt is the mounting end 6Tl. The jib 6 has a mounting end 6Tl mounted on the swivel body 2. The jib 6 can swing around the mounting portion of the mounting end 6Tl. The swing direction of the jib 6 is the direction indicated by the arrow U in FIG. A wire rope 9 for suspending a cargo handling object is passed through the pulley 8. A loading hook 11 for hanging a cargo handling object is attached to one end of the wire rope 9. The other end of the wire rope 9 is connected to and wound around the hoisting drum 3D of the hoisting device 3.

The hoisting device 3 rotates the hoisting drum 3D by a power generation source and winds up the wire rope 9. Further, the hoisting device 3 unwinds the wound wire rope 9. The hoisting device 3 drives the hoisting drum 3D with a hydraulic motor. The movement of winding the wire rope 9 on the hoisting drum 3D of the hoisting device 3 is called hoisting, and the movement of unwinding is called unwinding. In the present embodiment, both movements are collectively referred to as hoisting. When the hoisting device 3 winds up the wire rope 9, the loading hook 11 moves in a direction parallel to the vertical direction.

The elevation device 4 is a device for raising and lowering the jib 6. The depression / elevation device 4 has a depression / elevation drum 4D around which a wire rope 10 for elevation / elevation is wound. The elevation device 4 drives the depression / elevation drum 4D with a hydraulic motor. The elevating wire rope 10 is connected between the tip 6Tt of the jib 6 and the mounting end 6Tl. The jib 6 faces upward (opposite to the vertical direction) when the elevation device 4 winds up the wire rope 10 for elevation, and faces downward (side in the vertical direction) when the wire rope 10 for elevation is extended.

The swivel device 5 is a device that swivels the swivel body 2 around an axis Zr orthogonal to the support surface 14P of the gantry 14. The direction in which the swivel body 2 turns is the direction indicated by the arrow R in FIG. In the first embodiment, the swivel device 5 is attached to the swivel body 2. Then, for example, the gantry 14 is provided with an internal gear so that the swivel device 5 rotates the gear 5G that meshes with the internal gear. With such a structure, when the swivel device 5 rotates the gear 5G, the swivel body 2 swivels around the shaft Zr. The swivel device 5 may be provided on the gantry 14.

The hoisting device 3, the elevation device 4, and the swivel device 5 each include a hydraulic motor as a power generation source. The traction motor 20 and the hydraulic circuit 22 supply pressurized hydraulic oil to the hydraulic motor. The hydraulic circuit 22 includes a hydraulic pump 22a, a circulation pipe 22b, an oil cooler 22c, and an oil tank 22d. The traction motor 20 is a drive source for driving the hydraulic pump 22a of the hydraulic circuit 22. The traction motor 20 may be supplied with electric power from the power source of the ship 102. The hydraulic pump 22a is driven by the traction motor 20 to pressurize and send hydraulic oil. The circulation pipe 22b is connected to the hydraulic motor, the hydraulic pump 22a, the oil cooler 22c, and the oil tank 22d of the hoisting device 3, the elevation device 4, and the swivel device 5, and circulates hydraulic oil in each part. The oil cooler 22c cools the circulating hydraulic oil. The oil tank 22d accumulates pressure by storing pressurized hydraulic oil while adjusting the amount of circulating hydraulic oil.

The operation unit 28 is arranged in the driver's cab 2b. The operation unit 28 has various devices for which the driver inputs an operation. The operation unit 28 includes at least one of a button, a lever, a switch, a handle, and a key.

The alarm buzzer 30 is a notification unit that notifies the driver of the operating conditions of the deck crane 1 when the operating conditions are out of the preset allowable range. The operation of the alarm buzzer 30 is controlled by the control panel 31. The alarm buzzer 30 outputs an alarm sound when, for example, the angle of the jib 6 reaches an allowable range, and notifies the driver. The deck crane 1 may use a device that notifies an alarm by light or a display in place of or in addition to the alarm buzzer 30.

A device that realizes the control function of the deck crane 1 is arranged on the control panel 31. The control panel 31 includes a control device 42, an operation status detection device 44, a storage device 46, a communication unit 48, and a recording medium processing unit 50. Although the operation status detection device 44, the storage device 46, the communication unit 48, and the recording medium processing unit 50 are installed on the control panel 31 of the deck crane 1, they do not have to be included in the deck crane 1. .. The operation status detection device 44, the storage device 46, the communication unit 48, and the recording medium processing unit 50 are log devices that store the history of the operation information of the deck crane 1.

The control device 42 controls the operation of each unit including the traction motor 20 based on the input from the operation unit 28 and the information detected by the sensor. The control device 42 may be realized by a circuit, or may be realized by a PLC (programmable logic controller). The control device 42 of FIG. 3 shows a state in which it is connected to the operation unit 28, the alarm buzzer 30, and the traction motor 20, but it can also control various hydraulic motors, a hydraulic pump 22a, a valve for controlling hydraulic oil, and the like. conduct. Further, when the operating condition of the deck crane 1 is out of the preset allowable range, the control device 42 outputs an alarm from the alarm buzzer 30. The control device 42 can arrange a safety switch, a thermo switch, and a float switch in each part, and can switch whether to output an alarm based on the information of the switch.

The operation status detection device 44 is connected to the control device 42 and detects the operation information of the deck crane 1 detected in each unit. The operation information includes information input to the operation unit 28, such as a start state of the traction motor 20, an operation input to the operation unit, a changeover switch operation state, and the presence / absence of a button operation. Further, as the operation information, there is information acquired for operating the alarm buzzer 30 such as a thermo switch, a float switch, and various safety devices (limit switches). It also includes information detected by the sensor, such as the state of the alarm buzzer 30, the rotation speed (rotation speed, speed) of each part, the hydraulic pressure, the current value of the traction motor 20, and the temperature of the hydraulic oil. The operation status detection device 44 stores the detected information in the storage device 46. Further, the operation status detection device 44 causes the communication unit 48 and the recording medium processing unit 50 to output the stored data to the outside. The operation status detection device 44 is, for example, a PLC (programmable logic controller). When the control device 42 is a PLC, the control device 42 and the operation status detection device 44 may realize the functions of the control device 42 and the operation status detection device 44 with one PLC, or may provide separate PLCs. ..

The operation status detection device 44 includes a first data generation unit 60, a second data generation unit 62, and a self-diagnosis processing unit 64. The first data generation unit 60 creates the first data which is the data in which the acquired operation information information is not processed except for the processing necessary for recording. That is, the first data generation unit 60 creates data that maintains the acquired operation information value and time resolution. The second data generation unit 62 processes the first data and creates the second data which is the data in which the amount of data is reduced. The second data is, for example, the average value data of the first data.

The self-diagnosis processing unit 64 executes a process for self-diagnosing the state of the deck crane 1. The self-diagnosis processing unit 64 causes the deck crane 1 to execute a preset diagnostic operation, and determines the state of the deck crane 1 based on the operation information at the time of executing the diagnostic operation and the preset determination criteria. Diagnose. Here, the deck crane system 100 may provide the self-diagnosis processing unit 64 in the processing device 106.

The storage device 46 stores various data created by the operation status detection device 44. The storage device 46 stores the first data 70 and the second data 72.

The communication unit 48 communicates with other devices by wireless communication and transmits / receives data. The communication unit 48 outputs the second data 72 created by the operation status detection device 44 to another device. The recording medium processing unit 50 executes writing of data to a recording medium capable of recording data. The recording medium processing unit 50 writes the first data 70 created by the operation status detection device 44 on the recording medium. The recording medium processing unit 50 may be able to read data from the recording medium.

Further, the deck crane 1 has a lubricating oil temperature detection unit 32a, a hydraulic oil temperature detection unit 32b (oil temperature detection unit 32), a motor detection unit 33, and a load detection unit 34 as sensors for detecting the state of each part. It has a hoisting pressure detecting unit 35, a hoisting rotation speed detecting unit 36, an attitude detecting unit 37, a depression / elevation turning pressure detecting unit 38, a depression / elevation rotation number detecting unit 39, and a turning rotation number detecting unit 40. Each unit sends the detected result to the control device 42. The control device 42 sends the detected result to the operation information detection device 44. Each sensor may send the detection result directly to the operation status detection device 44.

The lubricating oil temperature detecting unit 32a detects the temperature of the lubricating oil supplied to the bearings and the like of each part. The hydraulic oil temperature detecting unit 32b detects the temperature of the hydraulic oil flowing through the hydraulic circuit 22. The motor detection unit 33 detects the state of the traction motor 20. Specifically, the motor detection unit 33 detects the current value, voltage value, and the like of the traction motor 20. The load detection unit 34 detects the weight of the cargo handling to be picked up by the deck crane 1. The load detection unit 34 is, for example, a load cell and is installed on the wire rope 9. The hoisting pressure detection unit 35 detects the pressure of the hydraulic motor of the hoisting device 3. The hoisting rotation speed detection unit 36 detects the rotation speed of the hoisting device 3. The attitude detection unit 37 detects the rolling moment of the deck crane 1, for example, the moment of the swivel body 2 with respect to the gantry 14. The posture detection unit 37 is, for example, a strain sensor. The depression / elevation turning pressure detection unit 38 detects the pressure of the hydraulic motors of the depression / elevation device 4 and the turning device 5 that are integrated with each other. The depression / elevation rotation speed detection unit 39 detects the rotation speed of the depression / elevation device 4, specifically, the rotation speed of the drum. The rotation speed detection unit 40 detects the rotation speed of the rotation device 5, specifically, the rotation speed of the pinion gear.

Next, the processing apparatus 106 will be described with reference to FIG. FIG. 4 is a block diagram showing a schematic configuration of the processing apparatus. As shown in FIG. 4, the processing device 106 includes a communication unit 120, a recording medium processing unit 122, a life diagnosis unit 124, and a remote monitoring unit 126. The communication unit 120 communicates with the communication unit 48 installed on the deck crane 1 to transmit and receive data. The communication unit 120 sends the acquired data to the life diagnosis unit 124 and the remote monitoring unit 126. The recording medium processing unit 122 reads data from the recording medium. The recording medium processing unit 122 may be able to write the data to a recording medium capable of recording the data. The recording medium processing unit 122 sends the read data to the life diagnosis unit 124 and the remote monitoring unit 126.

The life diagnosis unit 124 diagnoses the life of each part of the deck crane 1 based on the operation information of the deck crane 1 detected by the operation status detection device 44 acquired via the communication unit 120 and the recording medium processing unit 122. Specifically, the life diagnosis unit 124 specifies the parameters of the necessary operation information for each diagnosis target, extracts the operation information of the specified parameters, and is based on the extracted operation information and preset conditions. To estimate the condition of the diagnosis target. The life diagnosis unit 124 may output the estimated result of the diagnosis target, but further, it is necessary to replace or maintain the part to be diagnosed based on the estimated result of the diagnosis target and the information of the maintenance plan. It may be diagnosed and output. For example, the life diagnosis unit 124 detects and integrates the pressure waveform of the hydraulic oil detected by the hoisting pressure detecting unit 34 and the elevation turning pressure detecting unit 38, and based on the pressure and time, the hydraulic pump 22a and the motors of each part. Evaluate the life of the. The life diagnosis unit 124 calculates the TTB life based on the overturning moment detected by the attitude detection unit 37, the result of the rotation speed detection unit 40, and the rotation amount calculated based on the operation amount acquired by the operation unit 28. do. The life diagnosis unit 124 calculates the life of the wire rope 9 based on the amount of rotation detected by the elevation rotation speed detection unit 39 and the load detected by the load detection unit 34. In addition, the life diagnosis unit 124 estimates the hydraulic oil deterioration status from the oil temperature, pressure, and operating time.

The remote monitoring unit 126 is a unit of the deck crane 1 based on the operation information of the deck crane 1 detected by the operation status detection device 44 acquired via the communication unit 120 and the recording medium processing unit 122 and the information on which a failure has occurred. Diagnose the cause of the failure. Specifically, the remote monitoring unit 126 identifies the parameters of the necessary operation information based on the failure information, extracts the operation information of the specified parameters, and extracts the extracted operation information during normal operation and the operation information at the time of failure. The cause of the failure is estimated based on the preset conditions. The remote monitoring unit 126 may output the cause of the failure, but may further output information on the repair method and the work that can be performed in the state of the failure in addition to the cause of the failure. The remote monitoring unit 126 can monitor the state of deterioration of hydraulic pump performance from the state of operation direction, hoisting drive pressure, and elevation / turning drive pressure. Further, the remote monitoring unit 126 can monitor whether or not the performance of the motor is deteriorated or the set value of the relief valve is defective from the operation direction, driving pressure, and speed of each operation. Further, the remote monitoring unit 126 can monitor the state of the oil temperature low thermo controller from the oil temperature and the elevation / turning drive pressure.

In the deck crane system 100, the operation status detection device 44 can acquire the information of the control device 42 as the operation information, so that the operation status of the deck crane 1 can be grasped more accurately without providing a new sensor. Information can be obtained. Further, the deck crane system 100 acquires information that can more accurately grasp the operation status of the deck crane 1 by acquiring the information detected by the detection unit in the operation status detection device 44 as operation information. Can be done.

In particular, the deck crane system 100 is a starting point for troubleshooting by acquiring the operating status of the traction motor, which can detect whether or not the motor is in an overloaded state by acquiring the current value of the traction motor. (Whether the motor itself is out of order) can be detected. By acquiring the operation of the alarm buzzer, it is possible to check the trouble status by remote monitoring. The cargo handling cycle can be grasped by detecting the input operation to the operation unit. By detecting the temperature of the hydraulic oil flowing through the hydraulic circuit, it is possible to grasp the failure status of the safety device related to the oil temperature.

Next, the operation of the deck crane system will be described with reference to FIGS. 5 to 8. FIG. 5 is a flowchart showing an example of control of the deck crane system. FIG. 5 shows an example of processing for recording the operation information detected by the operation status detection device 44. The operation status detection device 44 repeatedly executes the process shown in FIG.

The operation status detection device 44 acquires operation status data (various operation information) (step S12). The operation status detection device 44 stores the operation status data as the first data in the storage device 46 (step S14). After storing the first data, the operation status detection device 44 determines whether the amount of data of the first data is equal to or greater than the threshold value (step S16). Here, the amount of data to be determined is the amount of data accumulated since the last time the second data was created. In the present embodiment, the amount of data is used, but it may be determined based on time. When the operation status detection device 44 determines that the amount of data of the first data is not equal to or greater than the threshold value (No in step S16), the operation status detection device 44 proceeds to step S20. When the operation status detection device 44 determines that the data amount of the first data is equal to or greater than the threshold value (Yes in step S16), the operation status detection device 44 processes the operation status data, creates the second data, and stores it in the storage device (step). S18), the process proceeds to step S20.

Next, the operation status detection device 44 determines whether to output the data (step S20). The operation status detection device 44 determines that data is output when, for example, a data output instruction is detected, or when a preset condition (when the amount of data accumulated exceeds a threshold value, each time data is created) is satisfied. do. When the operation status detection device 44 determines that the data is not output (No in step S20), the operation status detection device 44 ends this process.

When the operation status detection device 44 determines that the data is to be output (Yes in step S20), the operation status detection device 44 reads the first data from the storage device 46, writes the first data to the recording medium of the recording medium processing unit (step S22), and from the storage device 46. The second data is read out and output by the communication unit (step S24). The operation status detection device 44 may determine whether to execute each of step S22 and step S24, and perform only one of the processes based on the determination result.

As shown in FIG. 5, the deck crane system 100 creates the first data and the second data, records the first data having a large amount of information on a recording medium, and outputs the second data having a small amount of information from the communication unit. By doing so, it is possible to accumulate information capable of performing highly accurate analysis while transmitting information to the processing device 106 while suppressing an increase in the communication load.

FIG. 6 is a flowchart showing an example of control of the deck crane system. FIG. 6 shows a process executed by the self-diagnosis processing unit 64 of the operation status detection device 44. The self-diagnosis processing unit 64 determines whether or not there is an instruction for the self-diagnosis mode (step S30). The self-diagnosis mode instruction may be input from the operation unit, output from the control device 42 based on preset conditions, or output from another part of the operation status detection device 44.

When the self-diagnosis processing unit 64 determines that there is no instruction for the self-diagnosis mode (No in step S30), the self-diagnosis processing unit 64 returns to step S30. When the self-diagnosis processing unit 64 determines that there is an instruction for the self-diagnosis mode (Yes in step S30), the self-diagnosis processing unit 64 notifies the processing to be executed based on the self-diagnosis mode (step S32). The driver operates the operation unit 28 based on the notified information to drive the deck crane 1. The self-diagnosis processing unit 64 detects the operation (operation information) of the deck crane 1 executed by the driver in the self-diagnosis mode (step S34).

Next, the self-diagnosis processing unit 64 determines whether the operation of the self-diagnosis mode is completed (step S36). When the self-diagnosis processing unit 64 determines that the operation of the self-diagnosis mode is not completed (No in step S36), the self-diagnosis processing unit 64 returns to step S32 and executes the processes of steps S32 and S34. That is, the process of notifying the operation of the self-diagnosis mode and acquiring the operation information detected by executing the executed operation is repeated. When the self-diagnosis processing unit 64 determines that the operation of the self-diagnosis mode is completed (Yes in step S36), the self-diagnosis processing unit 64 determines the state based on the detection result (step S38). That is, the self-diagnosis processing unit 64 executes the set operation and acquires the operation information detected while executing the set operation. Comparing the operation information corresponding to the set operation with the preset reference operation information (the permissible range of the operation information when the set operation is executed, the information associated with the deterioration state). Then, the state of the deck crane 1 is determined.

The deck crane system 100 is provided with a self-diagnosis unit that executes a set operation, acquires operation information detected while executing the set operation, and evaluates the operation with respect to the reference motion. Information can be acquired, and the situation of the deck crane 1 can be grasped more accurately. As a result, it is possible to accurately grasp the maintenance time, the replacement time of parts, and the like.

In the process shown in FIG. 6, the operation of the self-diagnosis mode is notified and the driver executes the operation. However, when the self-diagnosis mode is activated, the set operation may be automatically executed. good.

FIG. 7 is a flowchart showing an example of control of the deck crane system. FIG. 7 shows an example of processing by the life diagnosis unit 124 of the processing device 106.

The life diagnosis unit 124 acquires the operation status data (step S42). The life diagnosis unit 124 extracts the data to be analyzed from the operation status data (step S44). The life diagnosis unit 124 sets the type of operation information to be used, the period of operation information, and the like for each part to be diagnosed by the deck crane 1. The life diagnosis unit 124 extracts the data to be analyzed from the operation status data based on the setting. After extracting the data, the life diagnosis unit 124 executes the life determination based on the extracted data (step S46). The life diagnosis unit 124 compares the extracted operation information state with the reference information, evaluates the deterioration state of each part, and determines the life of the target part (for example, the period until replacement is required). For example, the life diagnosis unit 124 detects and integrates the pressure waveform of the hydraulic oil detected by the hoisting pressure detecting unit 34 and the elevation turning pressure detecting unit 38, and based on the pressure and time, the hydraulic pump 22a and the motors of each part. Evaluate the life of the. The life diagnosis unit 124 calculates the TTB life based on the overturning moment detected by the attitude detection unit 37, the result of the rotation speed detection unit 40, and the rotation amount calculated based on the operation amount acquired by the operation unit 28. do. The life diagnosis unit 124 calculates the life of the wire rope 9 based on the amount of rotation detected by the elevation rotation speed detection unit 39 and the load detected by the load detection unit 34. In addition, the life diagnosis unit 124 estimates the hydraulic oil deterioration status from the oil temperature, pressure, and operating time.

After determining the life, the life diagnosis unit 124 determines whether there is a part that needs to be replaced (step S48). When the life diagnosis unit 124 determines that there is no part that needs to be replaced (No in step S48), the life diagnosis unit 124 ends this process. When the life diagnosis unit 124 determines that there is a part that needs to be replaced (Yes in step S48), it notifies that the part needs to be replaced (step S50). The life diagnosis unit 124 may notify the operator of the deck crane 1 via the communication unit, or may notify the operator of the processing device 106 or the control room of the ship 102.

The deck crane system 100 can determine the life with higher accuracy by determining the life based on the information detected by the operation status detection device 44.

FIG. 8 is a flowchart showing an example of control of the deck crane system. FIG. 8 shows an example of processing by the remote monitoring unit 126 of the processing device 106.

The remote monitoring unit 126 acquires the operation status data (step S62). The remote monitoring unit 126 extracts the data to be analyzed from the operation status data (step S64). The remote monitoring unit 126 sets the type of operation information to be used in response to the failure information of the deck crane 1. The remote monitoring unit 126 extracts the data to be analyzed from the operation status data based on the setting. The remote monitoring unit 126 can monitor the state of deterioration of hydraulic pump performance from the state of operation direction, hoisting drive pressure, and elevation / turning drive pressure. Further, the remote monitoring unit 126 can monitor whether or not the performance of the motor is deteriorated or the set value of the relief valve is defective from the operation direction, driving pressure, and speed of each operation. Further, the remote monitoring unit 126 can monitor the state of the oil temperature low thermo controller from the oil temperature and the elevation / turning drive pressure. After extracting the data, the remote monitoring unit 126 compares the data at the time of normal operation with the data at the time of failure based on the extracted data (step S66). The remote monitoring unit 126 estimates the failure site based on the comparison result (step S68). After estimating the faulty part, the remote monitoring unit 126 notifies the estimation result (step S70). The remote monitoring unit 126 may notify the operator of the deck crane 1 via the communication unit, or may notify the operator of the processing device 106.

The deck crane system 100 can determine the cause of the failure with higher accuracy by estimating the failure site based on the information detected by the operation status detection device 44.

1 Deck crane 2 Swing body 2a Main body 2b Driver's cab 3 Hoisting device 3D Hoisting drum 3M Hydraulic motor 4 Depression device 4D Depression drum 5 Swivel device 5G Gear 6 Jib 6Tl Mounting end 6Tt Tip 8 Slipper 9 Wire rope Wire rope 11 Loading hook 20 Main motor 22 Hydraulic circuit 22a Hydraulic pump 22b Circulation piping 22c Oil cooler 22d Oil tank 28 Operation unit 30 Alarm buzzer 31 Control panel 32a Lubricating oil temperature detection unit 32b Hydraulic oil temperature detection unit 33 Motor detection unit 34 Load detection unit 35 Crane pressure detection unit 36 Crane rotation speed detection unit 37 Attitude detection unit 38 Depression / elevation swivel pressure detection unit 39 Depression / elevation rotation speed detection unit 40 Crane rotation speed detection unit 42 Control device 44 Operation status detection device 46 Storage device 48, 120 Communication unit 50, 122 Recording medium processing unit 60 1st data generation unit 62 2nd data generation unit 64 Self-diagnosis processing unit 70 1st data 72 2nd data 100 Deck crane system 102 Ship 104 Deck 106 Processing device 124 Life diagnosis unit 126 Remote monitoring unit

Claims (3)

A deck crane including a hydraulic circuit including a hydraulic pump, a traction motor for driving the hydraulic pump, an operation unit for operating each unit, and a control device for controlling operation.
An operation status detection device that acquires operation information from the control device, and
A storage device that stores the operation information detected by the operation status detection device, and a storage device that stores the operation information.
A communication unit that sends and receives data by communicating with other units,
A recording medium processing unit that records data on a recording medium,
It has a processing device for acquiring the operation information detected by the operation status detection device, and
The operation information includes the current value of the traction motor, the operating status of the traction motor, the operation of the alarm buzzer, the input operation to the operation unit, the temperature of the hydraulic oil flowing through the hydraulic circuit, the temperature of the lubricating oil, and the deck crane. Contains at least one of the rolling moments
The operation status detection device includes a first data creation unit that creates the first data that is the acquired operation information, and all that the first data includes in the acquired operation information by processing the first data. It has a second data creation unit that includes the operation information of each part of the deck crane and creates a second data with a reduced amount of data.
The storage device includes a first data storage unit that stores the first data and a second data storage unit that stores the second data.
The operation status detection device records the first data in the recording medium processing unit, outputs the second data from the communication unit, and outputs the second data.
The processing device is installed at a place different from the ship on which the deck crane is arranged.
The processing apparatus is a deck crane system comprising a life diagnosis unit that diagnoses the life of the deck crane based on the operation information acquired through the communication unit and the recording medium processing unit. The operation status detection device causes the deck crane to execute a preset operation, acquires the operation information of the deck crane when the preset operation is executed, analyzes the acquired operation information, and analyzes the deck. The deck crane system according to claim 1, further comprising a self-diagnosis unit that identifies the state of the crane. The processing apparatus has a remote monitoring unit that determines the state of the deck crane based on the operation information and identifies the cause of the failure when the deck crane fails. Or the deck crane system according to 2.

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