JP2015131701A - Deck crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deck crane which can automatically record operation data of the deck crane.SOLUTION: A deck crane 1 comprises: a swivel mast 3 which is arranged at a ship via a swivel base table 2, and turns by a swivel hydraulic motor 12; a jib 6 which is arranged at the swivel mast 3, and elevates by an elevation hydraulic motor 16; and a winding hydraulic motor 14 for driving a winding drum 9 into which a winding wire rope 7 is wound. The deck crane also comprises: a winding hydraulic pressure detector 47 which detects the winding hydraulic pressure of the winding hydraulic motor 14; a winding rotation number detector 50 which detects a winding drum rotation number of the winding drum 9; and a recorder 46 which records operation data composed of the winding hydraulic pressure detected by the winding hydraulic pressure detector 47, and the winding drum rotation number detected by the winding rotation number detector 50 to a recording medium.

Description

  The present invention relates to a deck crane.

  A deck crane is installed on the upper part of cargo ships such as container ships that carry containers and bulk ships that carry grain, coal, iron ore, and wood. (For example, refer to Patent Document 1).

  The deck crane has a turning mast installed on the upper part of the hull so as to be able to turn horizontally via a swivel, and a jib attached to the turning mast so as to be able to be lifted and lowered from the tip of the jib. It is comprised so that load can be hung up and down with a rope. In the deck crane, a winding hydraulic motor that drives a winding drum in which a wire rope for lifting and lowering a load is wound, and a lifting hydraulic motor that drives a lifting drum in which a wire rope for lifting a jib is wound And a turning hydraulic motor that drives turning of the turning mast. The deck crane is equipped with the lifting drum that lifts and lowers the jib through the wire rope, and the lifting and lowering hydraulic cylinder driven by the lifting hydraulic motor is used to lift and lower the jib. There is also.

  In recent years, the flow rate of goods has increased worldwide, and for this reason, the importance of cargo ships capable of mass transportation is increasing.

  Cargo ships are owned by the owner, and the shipowner often lends the cargo ship owned by the shipper to the transportation company, and the shipowner lends the ship and the crew as a set to the transportation company.

  On the other hand, it is common practice to employ operators who carry out the work of lifting and lowering loads with a deck crane in the country where the shipowner carries the load.

  Cargo ships that have sailed must be regularly inspected, and if a malfunction of the equipment is detected by the inspection, repair or replacement is required. Often, ship owners outsource to management companies.

  And the management company is also inspecting the deck crane of a cargo ship at the inspection time set beforehand, for example like 8 years.

  However, as described above, the deck crane operator is generally employed in the country where the load is transported, and it is very difficult to maintain a constant technical level of the operator.

  Therefore, it is conceivable that an excessive load is applied to the deck crane due to the driving operation of the operator. As described above, when an excessive load acts on the deck crane, there is a risk that the periodic inspection will not be in time, and the malfunction of the equipment may be enlarged.

  In addition, since a deck crane that always handles a heavy load and a deck crane that handles a relatively small load have different fatigue levels due to the load applied to the deck crane, the preferred inspection time is also different.

  The deck crane starts counting time with the start signal of the drive unit consisting of an electric motor or engine that drives the hydraulic unit of the deck crane as an ON signal, and counts time with the stop signal of the drive unit as an OFF signal. Some are equipped with an hour meter (operating time accumulator) that is terminated. However, since the hour meter only accumulates the time during which the drive unit of the hydraulic unit has been operated, it cannot know the accumulated load that is the load with time received by the deck crane.

  In addition, the management company staff measures the operation data such as the hydraulic pressure of the hydraulic drive device and the speed of lifting and lowering the load when the deck crane is operated. From the data, it is not possible to determine the accumulated load, which is the load that the deck crane has received over time.

  Therefore, it is very effective if the operation data of the deck crane is recorded, the integrated load that is the load with time received by the deck crane is calculated from the recorded operation data, and a suitable inspection time can be set. .

JP-A-10-101292

  However, as mentioned above, it is difficult to maintain the technical level of the operator who operates the deck crane, and the language used by the operator is different. It is very difficult for the operator to record the operation accurately and stably. For this reason, it has not been done so far to record the operation data of the deck crane.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a deck crane that can automatically record the operation data of the deck crane.

The present invention includes a turning mast provided on a ship via a turntable and turned by a turning hydraulic drive device, a jib provided on the turning mast and lifted by a lifting hydraulic drive device, and a winding wire rope. In a deck crane including a winding hydraulic drive device that drives a winding drum,
A winding oil pressure detector for detecting the winding oil pressure of the winding hydraulic drive device, a winding rotation speed detector for detecting the winding drum rotation speed of the winding drum, the winding oil pressure detected by the winding oil pressure detector, A recorder for recording operation data consisting of the winding drum rotational speed detected by the winding rotational speed detector on a recording medium;
A deck crane characterized by comprising:

  In the above-described deck crane, it is preferable that the operation data is recorded on the recording medium of the recorder by an ON-OFF signal for operating the hour meter or a recording command signal including a steering operation start / stop signal.

  Further, in the deck crane, the elevation hydraulic pressure detected by the elevation hydraulic pressure detector that detects the elevation hydraulic pressure of the elevation hydraulic drive device and the turning detected by the turning hydraulic pressure detector that detects the turning hydraulic pressure of the turning hydraulic drive device. At least one of the hydraulic pressures may be recorded as operation data on a recording medium of a recorder.

  When the deck crane includes a lifting drum that is driven by a lifting hydraulic drive device, the deck crane includes a lifting speed detector that detects the lifting drum rotational speed of the lifting drum, The raising / lowering drum rotation speed detected by the raising / lowering rotation speed detector may be recorded on the recording medium of the recorder as operation data.

  The deck crane includes an elevation angle detector for detecting an elevation angle of the elevation hydraulic cylinder when the deck crane includes an elevation hydraulic cylinder driven by the elevation hydraulic drive device. The elevation angle detected by the angle detector for operation may be recorded on the recording medium of the recorder as operation data.

  The deck crane includes a hydraulic motor rotation speed detector that detects the rotation speed of the rotation shaft of a turning hydraulic motor that is a turning hydraulic drive unit, and the rotation speed detected by the hydraulic motor rotation speed detector is The operation data may be recorded on a recording medium of a recorder.

  In the deck crane, an indicator for informing operation data to an operator in the cab may be connected to the recorder.

  In the deck crane, the recorder is preferably housed in a container that prevents salt damage.

  According to the deck crane of the present invention, the operation data of the deck crane can be automatically recorded on the recording medium of the recorder.

(A) is the side view which shows one Example of the deck crane of this invention, (b) is the front view which looked at (a) from the BB direction. (A) is a perspective view which shows an example of the deck crane to which this invention is applied, (b) is a side view which shows the example of the deck crane different from (a) to which this invention is applied. It is a front view which shows an example of the microswitch unit provided in a deck crane. It is explanatory drawing which shows the concept of the method of maintaining and managing a deck crane using the recording medium of the recorder with which the deck crane of this invention was equipped.

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

  FIG. 2 (a) shows an example of a deck crane to which the present invention is applied. The deck crane 1 includes a swivel mast 3 installed on the upper part of a hull via a swivel 2 so as to be horizontally swivel, and the swivel mast. And a jib 6 attached to a lower position of the swivel mast 3 via a fulcrum pin 5 so as to be able to be lifted and lowered. The swivel mast 3 may be provided on the deck of the ship via the swivel base 2, or may be provided on the upper end of a fixed mast standing on the deck of the ship via the swivel base 2.

  Inside the turning mast 3 of the deck crane 1, a wire rope 7 is wound and a winding drum 9 for lifting and lowering a load via a hook 8 and a wire rope 10 are wound to raise and lower the jib 6. A lifting drum 11 for turning and a turning hydraulic motor 12 for driving turning of the turning mast 3 are provided.

  FIG. 2B shows another example of the deck crane 1 to which the present invention is applied. The configuration in which the winding drum 9 and the turning hydraulic motor 12 (not shown) are provided is shown in FIG. In the deck crane 1 of FIG. 2B, the jib 6 is lifted and lowered by a lifting hydraulic cylinder 13 that is driven by a lifting hydraulic motor (lifting hydraulic drive device) (not shown). ing.

  FIGS. 1A and 1B show an embodiment of the present invention applied to the deck crane 1 of FIG. 2A.

  As shown in FIGS. 1 (a) and 1 (b), inside the turning mast 3, a winding drum 9 driven by a winding hydraulic motor 14 (winding hydraulic drive device) via a speed reducer 15; A lifting drum 11 driven by a lifting / lowering hydraulic motor 16 (a lifting / lowering hydraulic drive device) via a speed reducer 17 is supported by a frame 18. Furthermore, a turning hydraulic motor 12 (a turning hydraulic drive device) that drives the turning of the turning mast 3 via a speed reducer 19 is provided at the inner bottom of the turning mast 3.

  Above the frame 18, a hydraulic unit 20 having a hydraulic pump (not shown) connected to the winding hydraulic motor 14, the lifting hydraulic motor 16, and the turning hydraulic motor 12 is provided. The hydraulic unit 20 is driven by a drive unit (not shown) composed of an electric motor or an engine. When the drive unit is driven by the start switch, the hour meter 21 that starts counting with the start signal as an ON signal and stops counting with the stop signal that stops the drive unit as an OFF signal is, for example, the deck crane 1. It is provided in the inside of the control board 22 which performs control of these. The hour meter 21 integrates the time during which the hydraulic unit 20 is operated. The hour meter 21 may be installed outside the control panel 22. Further, an oil cooler 23 for cooling the oil of the hydraulic unit 20 by outside air and an oil tank 24 are provided inside the turning mast 3.

  A handle 25 for operating the deck crane 1 is provided inside the cab 4, and a chair 26 for the operator is further provided. On the upper surface of the upper end portion of the turning mast 3, a sheave 27 on which the winding wire rope 7 is hung and a sheave 28 on which the turning wire rope 10 is hung are provided.

  The frame 18 is provided with a microswitch unit 29, and the microswitch unit 29 has a configuration shown in detail in FIG.

  In the microswitch unit 29 of FIG. 3, a winding shaft 31 having a male screw portion 30 and a lifting shaft 33 having a male screw portion 32 are provided side by side. The winding shaft 31 is connected to the central axis of the winding drum 9 (FIG. 1) via a wheel 34 and a chain 34 '. The lifting shaft 33 is connected to the central shaft of the lifting drum 11 (FIG. 1) via a wheel 35 and a chain 35 ′. Therefore, the rotation of the winding drum 9 is transmitted to the winding shaft 31, and the rotation of the lifting / lowering drum 11 is transmitted to the lifting shaft 33.

  A striker 36 to which a female screw is screwed is attached to the male thread portion 30 of the winding shaft 31, and the winding upper limit is reached in the vicinity of the winding shaft 31 when the striker 36 moves to the right end portion. A winding upper limit detection micro switch 37 for detection and a winding lower limit detection micro switch 38 for detecting the winding lower limit when the striker 36 moves to the left end are provided. With this configuration, winding by the winding drum 9 is provided. Upper and lower limits are specified.

  On the other hand, a striker 39 to which a female screw is screwed is attached to the male screw portion 32 of the raising and lowering shaft 33, and the upper limit of the elevation that is in contact with the raising and lowering shaft 33 when the striker 39 moves to the right end portion. A detection microswitch 40 is provided, and an elevation lower limit detection microswitch 41 that contacts when the striker 39 moves closer to the left end is provided, so that the jib 6 by the elevation drum 11 (FIG. 1) is provided. The upper limit position for standing motion and the lower limit position for lodging motion are defined. Further, at the position near the left end of the lifting shaft 33, the angle when the jib 6 is further lowered than the lower limit position at the time of cargo handling and the tip of the jib 6 is lowered to the required position on the ship deck and stored. A jib storage angle detection micro switch 42 that can detect the posture is provided.

  A striker 43 is provided at the left end portion of the lifting shaft 33, and a jib emergency stop micro switch 44 is provided in the vicinity of the striker 43. The striker 43 and the jib emergency stop micro switch 44 can detect whether the rotation direction of the hoisting drum 11 is unwinding or winding. Accordingly, when the jib 6 lowering operation is detected when the jib 6 is raised by the operation of the handle 25 by the operator, the elevating hydraulic motor 16 can be stopped and the jib 6 can be emergency stopped. I am doing so.

  Signals detected by the micro switches 37, 38, 40, 41, 42, 44 of the micro switch unit 29 are sent to the control panel 22 and used for controlling the deck crane 1.

  In the deck crane 1 of FIG. 1, a recorder that can automatically record the operation data D of the deck crane 1 on a recording medium 45 such as an SD memory card as shown in FIG. 4 at a required position inside the turning mast 3. 46 is provided. Since the inside of the swivel mast 3 cannot be kept airtight, the recorder 46 is hermetically accommodated in a container 46 ′ made of plastic or other material in order to prevent the recorder 46 from being damaged by salt. A configuration is preferable. The recorder 46 has been described for recording operation data on the recording medium 45 using an SD memory card. However, the recording medium 45 is not limited as long as the operation data can be recorded.

  As shown in FIG. 1A, a winding hydraulic pressure detector 47 is provided in the winding hydraulic motor 14 (winding hydraulic drive device), and an elevation hydraulic detector 16 is provided in the lifting hydraulic motor 16 (lifting hydraulic drive device). 48, and a turning hydraulic pressure detector 49 is provided in the turning hydraulic motor 12 (turning hydraulic drive device). Then, the winding hydraulic pressure V1 (FIG. 4) detected by the winding hydraulic pressure detector 47, the elevation hydraulic pressure V2 (FIG. 4) detected by the elevation hydraulic pressure detector 48, and the turning hydraulic pressure V3 detected by the turning hydraulic pressure detector 49. (FIG. 4) is led to the recorder 46 by a signal line.

  Further, a winding rotation speed detector 50 (rotary encoder) is provided on the winding shaft 31 of the microswitch unit 29 shown in FIG. 3, and a lifting rotation speed detector 51 (rotary encoder) is provided on the lifting shaft 33. . The winding drum rotational speed R1 (FIG. 4) detected by the winding rotational speed detector 50 and the lifting drum rotational speed R2 (FIG. 4) detected by the lifting / lowering rotational speed detector 51 are sent to the recorder 46 through signal lines. You are typing.

  Further, as shown in FIG. 1 (b), a hydraulic motor rotational speed detector 12 ′ for detecting the rotational speed of the rotational shaft of the turning hydraulic motor 12 is provided, and the rotational speed R3 (swing position) of the swivel base 2 is set. As a result, the rotational speed R3 can be input to the recorder 46 shown in FIG. In FIG. 3, the case where the winding drum rotation speed R1 is detected by the winding rotation speed detector 50 provided in the micro switch unit 29 and the lifting drum rotation speed R2 is detected by the lifting / lowering rotation speed detector 51 has been described. However, similarly to the hydraulic motor rotational speed detector 12 ′, a hydraulic motor rotational speed detector (not shown) for detecting the rotational speed of the rotating shaft of the winding hydraulic motor 14 is provided to obtain the winding drum rotational speed R1. Further, a lifting / lowering drum rotation speed R2 may be obtained by providing a hydraulic motor rotation speed detector (not shown) for detecting the rotation speed of the rotation shaft of the lifting / lowering hydraulic motor 16.

  Further, the handle 25 provided in the cab 4 of FIG. 1 detects that the handle 25 has been switched from the neutral state to the operating state, and that the handle 25 has been switched from the operating state to the neutral state. A sensor 52 is provided.

  Then, a signal α for turning on / off the hour meter from the hour meter 21 or a recording command signal S comprising a steering operation start / stop signal β by the sensor 52 is input to the recording meter 46 through a signal line. Yes. Further, the hydraulic pressure T of the hydraulic unit 20 is input to the recorder 46 in FIG.

  The recorder 46 is provided with a clock. Therefore, from the winding hydraulic pressure V1, the lifting hydraulic pressure V2, the swing hydraulic pressure V3, the winding drum rotational speed R1, the lifting drum rotational speed R2, and the rotational rotational speed R3 input to the recorder 46. The operation data D is automatically recorded on the recording medium 45 in units of time such as every second according to the time N.

  Further, as shown in FIG. 4, a display 53 connected to the recorder 46 by a signal line is provided inside the cab 4, and the display 53 has at least a winding hydraulic pressure detection. The winding hydraulic pressure V1 detected by the device 47 and the winding drum rotational speed R1 detected by the winding rotational speed detector 50 are displayed. In addition to the winding oil pressure V1 and the winding drum rotation speed R1, the display 53 displays the raising / lowering oil pressure V2, the turning oil pressure V3, the raising / lowering drum rotation speed R2, the turning rotation speed R3, the time N, the hydraulic temperature T, and the like. May be.

  On the other hand, as shown in FIG. 2 (b), the deck crane 1 is a system having a lifting hydraulic cylinder 13 driven by a lifting hydraulic drive device such as the lifting hydraulic motor 16 shown in FIG. Is provided with an elevation angle detector 54 for detecting the elevation angle of the elevation cylinder 13 and the elevation angle detected by the elevation angle detector 54 is transferred to the recorder 46 in place of the elevation drum rotational speed R2. input. Therefore, the deck crane 1 shown in FIG. 2B can operate in the same manner as the deck crane 1 shown in FIG.

  Next, the operation of the deck crane 1 of the present invention will be described.

  In the deck crane 1 of FIG. 1, when the hydraulic motor 20 is operated by starting a drive unit comprising an electric motor or an engine by a start switch (not shown), the hour meter 21 starts counting time, As shown, a recording command signal S comprising an ON-OFF signal α of the hour meter 21 is input to the recorder 46.

  When the recording command signal S composed of the ON-OFF signal α of the hour meter 21 is input to the recording meter 46, the recording meter 46 records the operation data D on the recording medium 45 starting from the input of the recording command signal S. Start work. The hoisting hydraulic pressure V1 from the hoisting hydraulic pressure detector 47, the hoisting hydraulic pressure V2 from the hoisting hydraulic pressure detector 48, and the turning hydraulic pressure detector 49, which are detected by lifting and lowering the load by the deck crane 1, are detected. , And the operation data D of the winding drum rotational speed R1 from the winding rotational speed detector 50, the lifting drum rotational speed R2 from the lifting rotational speed detector 51, and the rotational rotational speed R3. It is automatically recorded on the recording medium 45. When the operation of the hydraulic unit 20 is stopped, the recording command signal S consisting of the ON-OFF signal α of the hour meter 21 is not input, so that the recording of the operation data D is stopped.

  As described above, the operation data D from all the detectors can be guided and automatically recorded in the recorder 46. However, the recorder 46 has at least the winding hydraulic motor 14 (winding hydraulic drive). Operation data of the winding oil pressure V1 from the winding oil pressure detector 47 that detects the winding oil pressure of the device) and the winding drum rotation speed R1 from the winding rotation speed detector 50 that detects the winding drum rotation speed of the winding drum 9. It is preferable to record D. In the deck crane 1, the load acting on the winding hydraulic motor 14 is the largest, and therefore, the oil seal of the hydraulic path related to the winding hydraulic motor 14 is in the most severe situation. It is preferable to record and know the relationship between the value of R1, the winding oil pressure V1 and the winding drum rotation speed R1, because the current performance of the deck crane 1 is known. Further, by recording and knowing the winding hydraulic pressure V1 of the winding hydraulic motor 14 and the winding drum rotation speed R1 of the winding drum 9 with the largest load, the operation of the other lifting hydraulic motor 16 and the turning hydraulic motor 12 etc. Data D can be estimated to some extent.

  Thus, when the operation data D is recorded by operating the hydraulic unit 20 using the recording command signal S composed of the ON-OFF signal α of the hour meter 21, the operation data D is always recorded without a break. Compared with the case of continuing, since the operation data D can be compressed and recorded in a small amount, the time (capacity) in which the recording medium 45 can be recorded can be extended. Therefore, recording with the recording medium 45 is possible for a long period of time.

  On the other hand, in the deck crane 1 of FIG. 1, instead of the recording command signal S consisting of the ON-OFF signal α of the hour meter 21, the recording command consisting of the steering operation start / stop signal β by the sensor 52 provided on the handle 25. The signal S can be input to the recorder 46.

  In this case, when the sensor 52 detects that the handle 25 is switched from the neutral state to the operating state, the operation of recording the operation data D on the recording medium 45 is started from this. Therefore, when the work of the deck crane 1 is actually performed, the winding hydraulic pressure V1 from the winding hydraulic pressure detector 47, the raising hydraulic pressure V2 from the lifting hydraulic pressure detector 48, and the turning hydraulic pressure detector 49 from The operation data D including the swing hydraulic pressure V3, the winding drum rotational speed R1 from the winding rotational speed detector 50, the lifting drum rotational speed R2 from the lifting rotational speed detector 51, and the rotational rotational speed R3, Recording is automatically performed on the recording medium 45.

  As described above, when the operation data D is recorded using the recording command signal S including the steering operation start / stop signal β by the sensor 52 provided on the steering wheel 25, the recording is not performed when the steering wheel 25 is in the neutral state. Since only the operation data D when the crane work is actually performed is recorded, the time (capacity) that can be recorded in the recording medium 45 is increased.

  That is, when the operation data D is recorded using the recording command signal S composed of the ON-OFF signal α of the hour meter 21, if the hydraulic unit 20 is operated, the actual work by the deck crane 1 is performed. The operation data D is recorded even if the operation data D is not recorded, whereas the operation data D is recorded using the recording command signal S composed of the handle operation start / stop signal β by the sensor 52 provided on the handle 25. Records the operation data D only when the actual work by the deck crane 1 is performed. Therefore, when the operation data D is recorded using the recording command signal S consisting of the handle operation start / stop signal β by the sensor 52 provided on the handle 25, the recording command signal consisting of the ON-OFF signal α of the hour meter 21. Compared with the case where the operation data D is recorded using S, the time that can be recorded on the recording medium 45 can be further extended.

  In the above description, the case where the recording command signal S including the steering operation start / stop signal β by the sensor 52 provided on the steering wheel 25 is described, but instead, the hydraulic pressure of the hydraulic unit 20 is detected. When the detected hydraulic pressure of the hydraulic unit 20 exceeds the set hydraulic pressure set higher than the neutral hydraulic pressure, the deck crane 1 is in an operating state, and when the detected hydraulic pressure is lower than the set hydraulic pressure, the deck crane 1 does not operate. The operation data D may be recorded only when the deck crane 1 is actually working based on the detected hydraulic pressure.

  As shown in FIG. 2 (b), in the case of a deck crane 1 of a system having a lifting hydraulic cylinder 13 driven by a lifting hydraulic drive device, the lifting hydraulic pressure V2 by the lifting hydraulic drive device and In the deck crane 1 of FIG. 2 (b), the elevation angle detected by the elevation angle detector 54 provided in the elevation hydraulic cylinder 13 is input to the recorder 46 in place of the elevation drum rotation speed R2. As with the deck crane 1 in FIG. 2A, the operation data D can be recorded.

  As shown in FIG. 4, the recording medium 45 (SD memory card) on which the operation data D is recorded is taken out from the recorder 46 and inserted into a personal computer or the like provided for the cargo ship. The data D can be transmitted to a personal computer or the like provided in a management company on the ground using a communication means such as e-mail.

  Further, when the cargo ship calls at the port, the management company staff can take in the operation data D by removing the recording medium 45 (SD memory card) from the ship's recorder 46 and inserting it into the personal computer of the management company.

  In this way, the management company's personal computer or the like that has taken in the operation data D can calculate the integrated load, which is the time-dependent load received by the deck crane, by processing and calculating the operation data D according to the owner's request. Here, all integrated loads acting on the winding hydraulic motor 14 (winding hydraulic drive device), the lifting hydraulic motor 16 (lifting hydraulic drive device), and the turning hydraulic motor 12 (turning hydraulic drive device). And an integrated load due to the application of a large load equal to or greater than the set value. As a result, the fatigue levels of the winding hydraulic motor 14, the lifting hydraulic motor 16, the turning hydraulic motor 12, etc. can be calculated, respectively, so that the optimum inspection time of the deck crane 1 can be estimated with high reliability. it can.

  Since the information such as the accumulated load and the optimal inspection time of the deck crane obtained in this way can be notified to the shipowner using communication means such as e-mail or telephone line, the management company is expensive for the shipowner. Service can be provided.

  As described above, in the present invention, the winding hydraulic pressure detector 47 for detecting the winding hydraulic pressure V1 of the winding hydraulic motor 14 (winding hydraulic drive device), and the winding for detecting the winding drum rotation speed R1 of the winding drum 9 are used. The recording data 45 which records the operation data D consisting of the winding rotational speed V 1 detected by the winding rotational speed detector 50, the winding hydraulic motor 14 and the winding drum rotational speed R 1 detected by the winding rotational speed detector 50 is recorded on the recording medium 45. Since the total 46 is provided in the deck crane 1, the operation data D of the deck crane 1 can be automatically recorded on the recording medium 45 of the recording total 46.

  Since the operation data D is recorded on the recording medium 45 of the recorder 46 by the recording command signal S comprising the ON-OFF signal α for operating the hour meter 21 or the operation start / stop signal β for the handle 25, the operation data D can be efficiently recorded, and the period during which the recording medium 45 can record the operation data D can be extended.

  The raising / lowering hydraulic pressure V2 detected by the raising / lowering hydraulic detector 48 provided in the raising / lowering hydraulic motor 16 (the raising / lowering hydraulic drive device) and the turning hydraulic pressure detector 49 provided in the turning hydraulic motor 12 (the turning hydraulic drive device). By recording at least one of the swing hydraulic pressures V3 detected in (4) as operation data D in the recording medium 45 of the recorder 46, more detailed operation data D of the deck crane 1 can be recorded.

  When the deck crane 1 includes a lifting drum 11 that is driven by a lifting hydraulic motor 16 (lifting hydraulic drive device), the lifting rotation number detection for detecting the lifting drum rotation speed R2 of the lifting drum 11 is performed. In the deck crane 1 provided with the hoisting drum 11, the hoisting drum rotational speed R2 detected by the hoisting rotational speed detector 51 is recorded on the recording medium 45 of the recorder 46 as operation data D. Detailed operation data D can be recorded.

  When the deck crane 1 includes the lifting hydraulic cylinder 13 that is driven by the lifting hydraulic motor 16 (lifting hydraulic drive device), the elevation angle detector 54 that detects the elevation angle of the lifting hydraulic cylinder 13. And the elevation angle detected by the elevation angle detector 54 is recorded in the recording medium 45 of the recorder 46 as operation data D, so that the operation data D in the deck crane 1 having the elevation hydraulic cylinder 13 is further detailed. Can be recorded.

  A hydraulic motor rotational speed detector 12 ′ that detects the rotational speed of the rotating shaft of the turning hydraulic motor 12 (hydraulic hydraulic drive device) is provided, and the rotational speed R3 detected by the hydraulic motor rotational speed detector 12 ′ is operated. By recording the data D in the recording medium 45 of the recorder 46, more detailed operation data D of the deck crane 1 can be recorded.

  By providing the display 53 connected to the recorder 46 in the cab 4 and displaying the operation data D, the operator can operate while referring to the operation data of the display 53, so that the operation of the deck crane 1 can be performed. You will be able to do it more accurately.

  In order to prevent salt damage of the recorder 46, the operation data D can be stably recorded over a long period of time by accommodating the recorder 46 in the container 46 '.

  It should be noted that the deck crane of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Deck crane 2 Swivel 3 Swivel mast 4 Driver's cab 6 Jib 7 Wire rope 9 Winding drum 10 Wire rope 11 Lifting drum 12 Turning hydraulic motor (turning hydraulic drive device)
12 'Hydraulic motor rotational speed detector 13 Lifting hydraulic cylinder 14 Winding hydraulic motor (winding hydraulic drive device)
16 Lifting hydraulic motor (Hydraulic hydraulic drive device)
21 Hour meter 25 Handle 45 Recording medium (SD memory card)
46 Recorder 47 Winding hydraulic pressure detector 48 Lifting hydraulic pressure detector 49 Turning hydraulic pressure detector 50 Winding rotational speed detector 51 Hoisting rotational speed detector 53 Indicator 54 Lifting angle detector D Operation data R1 Winding drum Speed R2 Lifting drum speed R3 Turning speed S Recording command signal V1 Winding oil pressure V2 Lifting oil pressure V3 Turning oil pressure α ON-OFF signal β Operation start / stop signal

Claims (8)

A turning mast that is provided on the ship via a swivel base and that is turned by a turning hydraulic drive device, a jib that is provided on the turning mast and is lifted by a lifting hydraulic drive device, and a winding drum in which a winding wire rope is wound In a deck crane having a winding hydraulic drive device for driving,
A winding oil pressure detector for detecting the winding oil pressure of the winding hydraulic drive device, a winding rotation speed detector for detecting the winding drum rotation speed of the winding drum, the winding oil pressure detected by the winding oil pressure detector, A recorder for recording operation data consisting of the winding drum rotational speed detected by the winding rotational speed detector on a recording medium;
A deck crane characterized by comprising:   2. The deck crane according to claim 1, wherein the operation data is recorded on a recording medium of a recorder by an ON-OFF signal for operating the hour meter or a recording command signal including a steering operation start / stop signal.   Operation data is at least one of the elevation hydraulic pressure detected by the elevation hydraulic pressure detector that detects the elevation hydraulic pressure of the elevation hydraulic drive device and the swing hydraulic pressure detected by the revolution hydraulic detector that detects the revolution hydraulic pressure of the revolution hydraulic drive device. The deck crane according to claim 1, wherein the deck crane is recorded on a recording medium of a recorder.   When the deck crane includes a lifting drum driven by a lifting hydraulic drive device, the deck crane includes a lifting speed detector for detecting the lifting drum rotational speed of the lifting drum, and the lifting speed detector The deck crane according to any one of claims 1 to 3, wherein the detected number of rotations of the hoisting drum is recorded as operation data on a recording medium of a recorder.   When the deck crane includes a lifting hydraulic cylinder driven by a lifting hydraulic drive device, the deck crane includes a lifting angle detector that detects the lifting angle of the lifting hydraulic cylinder, and the detection is performed by the lifting angle detector. The deck crane according to any one of claims 1 to 3, wherein the elevation angle is recorded as operation data on a recording medium of a recorder.   A hydraulic motor rotational speed detector for detecting the rotational speed of the rotary shaft of the hydraulic hydraulic motor for rotation that is a hydraulic driving device for rotational movement is provided, and the rotational rotational speed detected by the hydraulic motor rotational speed detector is recorded as operation data in a recorder. It is recorded on a medium, The deck crane as described in any one of Claims 1-5 characterized by the above-mentioned.   The deck crane according to any one of claims 1 to 6, wherein an indicator for informing operation data to an operator in the cab is connected to the recorder.   The deck crane according to any one of claims 1 to 7, wherein the recorder is housed in a container that prevents salt damage.

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