JP4401993B2 - Container chassis - Google Patents

Description

  The present invention relates to a container chassis that can be transported or temporarily placed by fixing the container with a lock means, and in particular, when the container is lifted, a notification signal is output when the container is fixed. It relates to a container chassis.

  Normally, in a container yard, a container that is carried in from the outside by a trailer or the like is fixed to the trailer chassis. After stopping the trailer at the gate, the twist lock that fixes the chassis and the container is released. Then, the trailer is moved to the position of a cargo handling device such as an RTG (Rubber Tier Gantry Crane) or a portal container crane, and a container is handled by this cargo handling device.

  Corner boxes are provided at the four corners of the container. The chassis is provided with a total of four twist locks at positions corresponding to the corner boxes.

  When handling containers, the twist lock release work may be forgotten at the gate, or the release operation may be incomplete and not completely released. When the container is lifted by the cargo handling equipment, the trailer (chassis) together with the container Accidents may occur where they are lifted together.

  This accident is not a problem if the operator of the cargo handling equipment notices the lifting of the chassis at an early stage and stops the winding, but if the driver of the trailer lifted with the container suddenly jumps down, it may lead to a serious accident.

Therefore, a monitoring camera that monitors the space between the chassis and the container is installed in the cargo handling equipment, and measures are taken to prevent accidents where the operator monitors the video from the monitoring camera and lifts the trailer (chassis) together with the container. Yes.
In addition to measures for providing such a monitoring camera, measures are taken to prevent an accident in which a trailer (chassis) is lifted together with a container (for example, Patent Document 1).

  Patent Document 1 discloses a gap detection device that detects a gap between a container and a chassis from a lateral direction by using a plurality of optical sensors. The gap detection device of Patent Document 1 includes a plurality of optical sensors so that the presence or absence of a container and a chassis can be detected at a predetermined vertical distance in a predetermined vertical range so that various chassis having different loading platform heights can be handled. The gap sensor unit formed by arranging the single unit is configured by attaching one set or two or more sets in the horizontal direction at or near the center of the cargo handling position of the container.

JP 2004-75246 A

  However, in the case of visual monitoring using a conventional surveillance camera, it is necessary for the operator of the cargo handling equipment to monitor whether or not the chassis is lifted at the time of winding, and spends extra time and confirmation for the operator. There is a problem.

  In addition, the gap detection device of Patent Document 1 needs to be provided with a gap sensor unit formed by arranging a plurality of optical sensors, which causes a problem in that the device configuration becomes complicated and the cost increases.

In any of the conventional techniques, it is not known whether or not all the twist locks are released unless the container is lifted. For this reason, when all the twist locks are not released, it is necessary to return to the gate after lowering the container again and release the twist locks, which causes a problem that work efficiency is lowered.
In any of the conventional techniques, when there are a plurality of lanes for lifting the container from the trailer, the accuracy of confirming that the container is separated from the trailer (chassis) is lowered, and it is difficult to apply.

  An object of the present invention is to solve the problems of the prior art, and for a container that can reliably notify a cargo handling device or an operator of the cargo handling device that the container and the chassis are unfixed. To provide a chassis.

In order to achieve the above object, the present invention provides a container crane having a container provided with corner brackets for fixing itself at each of the four corners of the casing. to, and placing the container, a container chassis for transporting, a chassis frame which the container is placed, is provided to each of the corner fittings corresponding to the position of the container of the chassis frame, Lock means for fixing the container and the chassis frame via each corner metal fitting of the container, and a lock provided on the lock means, respectively, wherein the lock means releases the fixation between the container and the chassis frame . detecting means for detecting whether there is the release state, or the certain fixed in a locked non-releasing state not released, said detection Connected to the means, before lifting the container from the chassis for the container by the container crane, when said container by at least one locking means and said chassis frame is fixed, or chassis for the container the container When the vehicle is placed and travels , a container chassis is provided that has a notification means for outputting a notification signal when the container and the chassis frame are not fixed by the locking means. It is.

In this invention, it is preferable that the 1st receiving means which receives the said alerting | reporting signal is provided in the said container crane arrange | positioned at the said container yard.
In the present invention, it is preferable that the second receiving means for receiving the notification signal is provided in a pulling means for pulling the chassis frame.
Furthermore, in this invention, it is preferable that the 3rd receiving means which receives the said alerting | reporting signal is provided in the gate arrange | positioned at the entrance of the said container yard.
Moreover, it is preferable that the detection means is a detection sensor that detects the unlocked state or the unlocked state of the lock means.
In addition, the detection unit includes a sensor plate provided in the lock unit, and a proximity sensor that detects whether the sensor plate has approached a predetermined distance, and the unlocking state of the lock unit, or It is preferable to detect the unlocking state based on whether or not the sensor plate is detected by the proximity sensor.
Moreover, it is preferable that the said locking means is a twist lock fixed by inserting and rotating in the long hole formed in the lower surface of the said corner metal fitting of the said container.
Further, the lock means is inserted into an elongated hole formed in the lower surface of the corner metal fitting of the container and is rotated and fixed, a rotation shaft connected to the twist lock pin, and the rotation shaft And a lever for rotating.
Moreover, it is preferable that the sensor plate of the detection unit is provided on the rotation shaft of the lock unit.

Furthermore, in the present invention, the container is further placed on the chassis frame in an appropriate state with each corner of the container and each locking means provided corresponding to each corner. It is preferable that a placement detection means for detecting whether or not there is provided.
Moreover, it is preferable that the above-described placement detection means is a detection sensor provided at each of the at least two corners of the container and detecting the placement state of the container with respect to the chassis frame.
Further, the position detection means includes a detection pin that is pushed down by the lower surface of the container, a spring that biases the detection pin upward, and a proximity sensor that detects the detection pin pushed down by the lower surface of the container. In all the above-described placement detection means, it is preferable that the proximity sensor detects the detection pin to detect that the container is placed in an appropriate state with respect to the chassis frame.
The notification means includes: the container crane disposed in the container yard; the traction means for pulling the chassis frame; and the transmission means for transmitting a notification signal to a gate disposed at the entrance of the container yard. It is preferable to provide.

According to the container chassis of the present invention, a locking means provided at a position corresponding to each corner fitting provided on the container to be placed, and fixing the container and the chassis frame via each corner fitting, Detection means for detecting whether or not the container and the chassis frame are fixed by each locking means, and the container and the chassis frame are fixed by at least one locking means when the container is lifted and connected to the detection means. And providing a notification signal to output a notification signal, so that if at least one of the locking means is not released among all the locking means, the notification means sends the notification signal to, for example, a container Container cranes (loading devices) placed in the yard, trailer heads that pull chassis frames Traction means, it can be output to the gate located entrance of the container yard. Based on the notification signal, it is confirmed that the container and the chassis frame are not completely fixed or not fixed, for example, an operator who operates the container crane, a trailer head that pulls the chassis frame, etc. For example, an alarm can be issued to the driver who operates the traction means and the gate staff at the gate located at the entrance of the container yard. Thereby, an operator, a driver, or a gate staff can be made to recognize that it is in a lock release state or a non-release state.
In the present invention, for example, when the container is lifted, the lifting operation of the container can be stopped in advance by the notification signal, and the co-hanging with the chassis can be prevented.

  Furthermore, in the present invention, based on the notification signal, for example, at the gate arranged at the entrance of the container yard, it is possible to know the release state of the lock means, so that the lock means enters the container yard without being released. This prevents the container from being lifted once, stopped, and returned to the gate to release the locking means again. Thereby, the fall of the efficiency of cargo handling work can be suppressed to the minimum. Moreover, when leaving a container yard, the locked state can be ensured. As a result, an accident due to inadequate locking can be prevented.

  In addition, according to the present invention, since the unlocking state by the locking means is grasped individually for each chassis, the present invention can be applied even when there are a plurality of lanes for lifting the container. It is possible to prevent lifting.

Below, based on the preferred embodiment shown in an accompanying drawing, the chassis for containers of the present invention is explained in detail.
FIG. 1 is a schematic view showing a portal container crane into which a container chassis according to an embodiment of the present invention is carried. A portal container crane (hereinafter referred to as a container crane) 10 of the present embodiment is provided in a container yard, for example. The container crane (loading device) 10 is remotely operated, and an operation unit (not shown) is provided at, for example, a gate (not shown). The container crane 10 is operated by an operation unit by a crane operator, and the container 20 is unloaded.

As shown in FIG. 1, the container crane 10 includes a crane girder 12, a pair of legs 14, wheels 15 provided at the lower part of the legs 14, a trolley 16, a controller 16 a, and a spreader 18. Have
The container crane 10 is provided with leg portions 14 extending in the vertical direction (hereinafter referred to as the longitudinal direction) at both ends of the crane girder 12 extending in the horizontal direction (hereinafter referred to as the lateral direction), thereby forming a gate shape. is doing. The crane girder 12 can be moved in the direction perpendicular to the paper surface by the wheels 15.

The trolley 16 is disposed on the upper side of the crane girder 12. The trolley 16 is provided with a hoisting machine (not shown) and lateral movement means (not shown).
The lateral movement means moves the trolley 16 in the lateral direction. As this lateral movement means, for example, a wire is connected to the rack and pinion, and the trolley 16, and the wire is wound or sent out.

  The spreader 18 is provided below the crane girder 12, and the spreader 18 is connected to the trolley 16 (winding machine) via a wire rope W (see FIG. 7). The spreader 18 moves in the lateral direction together with the trolley 16. Further, the spreader 18 can be moved up and down by the hoisting machine of the trolley 16.

  The control unit 16a controls the overall operation of the trolley 16 and the spreader 18, and controls the lateral movement of the trolley 16, the position detection of the trolley 16, the holding and opening of the container by the spreader 18, and the hoisting machine. Drive control and the like are performed.

In the container crane 10 illustrated in FIG. 1, for example, six rows of containers 20 are placed between the leg portions 14, and one row of lanes 110 for handling the containers 20 is provided. The containers 20 are moved in the lateral direction by the trolley 16 while being held by the spreader 18, and the containers 20 are stacked in a maximum of four stages in each row, for example.
In the lane 110, a container chassis 30 on which the container 20 is placed and transported is on standby for cargo handling by the container crane 10.
In addition, the container crane 10 may provide an operation room in the trolley 16, and may handle the container 20 by an operator.

  FIG. 2 is a schematic perspective view showing the container chassis according to the embodiment of the present invention together with the container, and FIG. 3 is a partial side sectional view showing the main part of the container chassis of FIG.

As shown in FIG. 2, the container 20 transported by the container chassis 30 of the present embodiment includes, for example, a substantially rectangular housing 22 and corner boxes 24 provided at all corners of the housing 22. And have. The corner boxes 24 are corner fittings provided for container handling, container stacking, container tightening, and container lashing. For example, a total of eight corner boxes 24 are provided.
The corner box 24 of the container 20 of the present embodiment has a long hole 26 formed in the lower surface. With the corner box 24, the containers 20 can be fixed using a stacking cone. The container 20 and the container chassis 30 can be fixed by a twist lock on the container chassis 30.

  As shown in FIG. 2, a container chassis (hereinafter referred to as a chassis) 30 includes a chassis frame (hereinafter referred to as a frame) 32, wheels 34, a support member 39, a lock unit 40, and a lock detection unit 50. And a placement detection means 60 and a notification section (notification means) 72 (see FIG. 4A).

  The container 32 is placed on the surface 32 a of the frame 32, and the surface 32 a has substantially the same size as the lower surface 22 a of the container 20. For example, a storage box 38 having a hollow inside is provided at each corner of the frame 32 corresponding to the corner box 24 of the container 20. Each storage box 38 is provided with, for example, a lock means 40 and a placement detection means 60, respectively. For example, in this embodiment, a total of four lock means 40 are provided, and a total of four placement detection means 60 are provided.

  Further, a traction member 33 is provided at one end of the frame 32, and traction means (not shown) such as a trailer head is attached via the traction member 33. This traction means is driven by the driver. This traction means is provided with a receiving device and an alarm means. As a result, a warning corresponding to the notification signal is notified to the driver. Note that the receiving device is not particularly limited as long as it can receive a notification signal described later. The warning means is not particularly limited as long as it can notify the driver of the danger by sound, light, video, or the like based on the notification signal received by the receiving device.

  A support member 39 is provided on the lower surfaces of the two storage boxes 38 on the side where the pulling member 33 is provided. The support member 39 supports the chassis 30 together with the wheels 34 when the chassis 30 is placed independently. The support member 39 can be shrunk when traction means such as a trailer head is attached.

The arrangement positions of the lock means 40 and the placement detection means 60 are not particularly limited as long as they are provided at positions corresponding to the corner boxes 24 provided on the container 20 on the surface 32a of the frame 32. . Moreover, the arrangement position of the corner box 24 in the housing | casing 22 is not specifically limited, The corner | angular part of the housing | casing 22 does not necessarily need to be. The arrangement position is appropriately changed depending on the specifications of the container 20 and the like.
The wheels 34 are provided on the lower surface of the frame 32 at front and rear ends in the longitudinal direction of the frame 32 and are connected by an axle (not shown).

  The lock means 40 is constituted by, for example, a twist lock, and includes a twist lock pin 42, a rotation shaft 44, and a lever 46 as shown in FIG.

  The twist lock pin 42 is inserted into the elongated hole 26 of the corner box 24 and rotated 90 degrees to fix the container 20 and the chassis 30. The twist lock pin 42 is formed of a thick material having a substantially triangular shape in side view with one apex portion rounded. One end of the rotating shaft 44 is connected to the surface of the twist lock pin 42 that faces the apex. A lever 46 is attached to the rotating shaft 44.

  The storage box 38 in the present embodiment is provided with a cover 43 on the surface thereof. A through hole 38 a is formed in the cover 43. The rotating shaft 44 is inserted through the through hole 38a. A twist lock pin 42 is disposed on the cover 43.

  Further, a guide groove 38b extending in the horizontal direction is formed in the storage box 38, and a lever 46 projects outside from the guide groove 38b.

  A sensor plate 52 made of, for example, a metal plate is provided on the other end side of the rotating shaft 44. A proximity sensor 54 is provided that detects the sensor plate 52 in a state in which the rotating shaft 44 is rotated by 90 ° from a state that is not locked by the locking means 40 (hereinafter referred to as an unlocked state). The proximity sensor 54 is connected to the notification unit 72 (see FIG. 4A). The sensor plate 52 and the proximity sensor 54 constitute a lock detecting means 50.

  The proximity sensor 54 detects the sensor plate 52 when the sensor plate 52 approaches a predetermined distance.

In the lock means 40 of the present embodiment, the twist lock pin 42 is inserted into the corner box 24 with the longitudinal direction coinciding with the elongated hole 26, and the rotating shaft 44 is rotated 90 ° by the lever 46 from the unlocked state. Then, the twist lock pin 42 cannot be removed from the long hole 26. That is, the lock state is entered. At this time, the proximity sensor 54 detects the approaching sensor plate 52, and a detection signal is output from the proximity sensor 54 to the notification unit 72. In the unlocked state by the lock means 40, the sensor plate 52 is not detected, and no detection signal is output from the proximity sensor 54 to the notification unit 72.
In the lock detection means 50, the proximity sensor 54 is not particularly limited. In this embodiment, a limit switch can be used instead of the proximity sensor 54.

The placement detection means 60 includes, for example, a detection pin 62, a spring 66, and a proximity sensor 70. In the present invention, the placement detection means 60 is not particularly limited.
The detection pin 62 is made of, for example, a rod-shaped member having both end portions formed in a flat plate shape.

  Further, for example, one guide hole 38 c is formed in the periphery of the cover 43 on the surface of each storage box 38. A sensor storage portion 68 is provided on the inner surface of each storage box 38 in which the guide hole 38c is formed. Proximity sensors 70 are provided in the respective sensor storage portions 68. All the proximity sensors 70 are connected to the alerting | reporting part 72 (refer Fig.4 (a)).

The upper end of the detection pin 62 is larger than the shaft, and a spring 66 is inserted through the shaft of the detection pin 62 and further through the guide hole 38 c, and the shaft reaches the sensor housing 68. The detection pin 62 is urged upward by a spring 66, and its end protrudes upward from the surface of the storage box 38.
When the container 20 is placed on the chassis 30, when the twist lock pin 42 enters the elongated hole 26, the detection pin 62 is pushed down by the lower surface 22 a of the container 20 and moves in the guide hole 38 c, and the end portion is a sensor. Approaching the proximity sensor 70 in the storage unit 68, the detection pin 62 is detected by the proximity sensor 70. At this time, a detection signal is output from the proximity sensor 70 to the notification unit 72.

  On the other hand, when the detection pin 62 is not pushed down, the detection pin 62 is biased upward by the spring 66 and is separated from the detection limit of the proximity sensor 70. For this reason, the detection pin 62 is not detected by the proximity sensor 70, and the proximity sensor 70 does not output a detection signal to the notification unit 72. Thereby, it is possible to determine whether or not the twist lock pin 42 is properly inserted into the elongated hole 26. That is, it is possible to detect whether or not the container 20 is placed on the frame 32 in an appropriate state.

In the placement detection means 60, the proximity sensor 70 is not particularly limited. In this embodiment, a limit switch or a proximity switch can be used instead of the proximity sensor 70.
Furthermore, in the present embodiment, the arrangement position of the placement detection means 60 is not particularly limited, and may be below or next to the chassis 30. Furthermore, in the present embodiment, the placement detection unit 60 may be arranged at least at two corners of the chassis 30 that are diagonal when the cost is taken into consideration.

Fig.4 (a) is a schematic diagram which shows the connection state of the alerting | reporting part provided in the chassis for containers of a present Example, a lock | rock detection means, and a mounting | wearing detection means, (b) is alerting | reporting of (a). It is a block diagram which shows the structure of a part.
As shown in FIG. 4A, the notification unit 72 includes a lock detection unit 50 (proximity sensor 54) and a placement detection unit 60 (proximity sensor) provided with the storage box 38 provided at each corner of the frame 32. 70) and outputs a notification signal corresponding to the detection signal to the lock detection means 50 and the placement detection means 60 to the outside.
The notification unit 72 includes a determination unit 74, a calculation unit 80, a transmission unit 82, and an antenna 84. The determination unit 74 includes a lock determination unit 76 and a placement determination unit 78.

The lock determination unit 76 is connected to each lock detection means 50 (each proximity sensor 54). The lock determination unit 76 determines that the container 20 and the frame 32 are not fixed when no detection signal is output from the proximity sensors 54 of all the lock detection means 50, that is, when the lock detection unit 76 is in the unlocked state. . In addition, when at least one lock means 40 is in a locked state (when a detection signal is output from the proximity sensor 54), it is determined that the container 20 and the frame 32 are fixed.
When it is determined that the container 20 and the frame 32 are fixed, the lock determination unit 76 outputs a non-release signal to the calculation unit 80. If the lock determination unit 76 determines that the container 20 and the frame 32 are not fixed, a release signal may be output to the calculation unit 80.

The placement determination unit 78 is connected to each placement detection means 60 (proximity sensor 70). The placement determination unit 78 determines that the container 20 and the frame 32 are in an appropriate placement state when detection signals are input from all the placement detection means 60. That is, it is determined that all the twist lock pins 42 are inserted through the long holes 26. Otherwise, if no detection signal is input from the placement detection means 60, it is determined that the container 20 and the frame 32 are not properly placed.
When it is determined that the container 20 and the frame 32 are appropriately placed, the placement determination unit 78 outputs a placement signal to the calculation unit 80. If the placement determination unit 78 determines that the container 20 and the frame 32 are not properly placed, a placement inappropriate signal may be output to the calculation unit 80.

  The calculation unit 80 is connected to the lock determination unit 76 and the placement determination unit 78 and receives signals (non-release signal, release signal, placement signal, and placement) input from the lock determination unit 76 and the placement determination unit 78. The notification signal is generated based on the inappropriate signal. In the present embodiment, the notification signal may be generated based on at least the non-cancel signal and the placement inappropriate signal. This notification signal is transmitted, for example, to a receiving device 86 (see FIG. 5) provided in the trolley 16 (see FIG. 1).

For example, when the non-release signal is input from the lock determination unit 76, the calculation unit 80 generates a notification signal. For example, when the spreader 18 grips and lifts the container 20 on the chassis 30, the receiving device 86 receives a notification signal and alerts the operator that the lock is not released by the alarm means. Thereby, danger can be notified to an operator.
Further, for example, even when the landing of the spreader is detected, the calculation unit 80 generates a notification signal when no placement signal is input from the placement determination unit 78. For example, when the container 20 on the chassis 30 is not properly placed, the receiving device 86 receives a notification signal, and alerts the operator that the placement state is inappropriate by the alarm means. Thereby, danger can be notified to an operator.
Further, the calculation unit 80 generates a warning generation signal that issues a warning to the driver of the trailer head that pulls the chassis 30 as the notification signal.
Note that the present invention can also be realized by causing the control unit 16a of the container crane 10 to directly receive the notification signal generated by the calculation unit 80 and performing automatic and safe control.

Further, the notification signal can be used to interlock the lifting of the spreader 18 of the container crane 10. In this case, when the container is lifted, the spreader is landed on the upper surface of the container, and the spreader and the container are fixed by a twist lock. At this time, the twist lock lamp of the spreader is turned on. And if the twist lock of a chassis is a cancellation | release state, the operator of a container crane will start the lifting of a container.
In this case, even if other conditions are satisfied when the container is lifted on the container crane side, the container is not allowed to be lifted by the interlock unless the twist lock of the chassis is released.

The transmission unit 82 generates a transmission signal corresponding to the notification signal generated by the calculation unit 80.
The transmitting antenna 84 is configured to radiate a transmission signal toward the receiving device 86.

  Moreover, the battery which supplies the electric power which drives the determination part 74, the calculating part 80, and the transmission part 82 is provided, for example, well-known batteries, such as CR-2032 (coin-shaped manganese dioxide lithium battery), are used. Further, the power for driving the determination unit 74, the calculation unit 80, and the transmission unit 82 may be supplied from a trailer head that pulls the chassis 30 by a battery power source.

FIG. 5 is a schematic diagram showing a configuration of a receiving device provided in the portal container crane of the present embodiment.
The receiving device 86 is connected to, for example, the control unit 16a, and a demodulation unit 94 that demodulates the notification signal from the antenna element 90, the amplifier circuit 92 (AMP), and the high-frequency signal (notification signal) supplied from the notification unit 72. It has.

The antenna element 90 is configured to receive a transmission signal (notification signal) transmitted from the notification unit 72.
The amplifier circuit (AMP) 92 amplifies the received transmission signal (notification signal) and supplies it to the demodulator 94.

The demodulator 94 demodulates the notification signal and generates the demodulated notification signal, and supplies the demodulated notification signal to the control unit 16a.
As described above, the receiving device 86 can demodulate and take out the notification signal in the demodulator 94.
Note that, for example, a part of power supplied to the trolley 16 is used as the power source used to drive the amplifier circuit (AMP) 92 and the demodulator 94.

  The control unit 16 a of the trolley 16 can identify the notification signal based on either the lock determination unit 74 or the placement determination unit 76. The control unit 16a controls the trolley 16 and the spreader 18 as described above. Based on the notification signal, the control unit 16a controls the operation of the spreader 18 safely or issues an alarm.

In this embodiment, radio waves are used as communication means between the chassis 30 and the receiving device 86, but the present invention is not limited to this, for example, optical communication, infrared communication, or ultrasonic communication. The notification signal can be output to the receiving device 86 by a known communication method.
In the present embodiment, the notification signal is output to the trolley 16 of the container crane 10 to control the operation of the spreader 18, but the present invention is not limited to this. The control unit 16a that receives the notification signal may output a notification signal to the operation unit and notify the crane operator by an alarm unit. You may use this notification for control of a container crane.

Next, operation | movement of the chassis 30 of a present Example is demonstrated.
FIGS. 6A and 6B are schematic views showing a method of releasing the fixing by the locking means of the container chassis of this embodiment in the order of steps. FIG. 6A shows a state where the chassis 30 and the container 20 are fixed.

  First, when the container 20 is transported to the gate by a trailer or the like, as shown in FIG. 6A, the lock means 40 is a state in which the twist lock head 42 is rotated by 90 ° with respect to the length of the long hole 26. (Locked state). At this time, the sensor plate 52 is detected by the proximity sensor 54, and a detection signal is output to the lock determination unit 76.

  Next, as shown in FIG. 6B, the lever 46 is rotated by 90 ° so that the longitudinal directions of the twist lock head 42 and the long hole 26 coincide with each other. Thereby, fixation by the lock means 40 can be cancelled | released. At this time, the sensor plate 52 is not detected by the proximity sensor 54, and the detection signal is not output to the lock determination unit 76. At this time, if no detection signal is output from all the locking means 40 to the lock determination unit 76, the lock determination unit 76 outputs a release signal to the calculation unit 80. On the other hand, when a detection signal is output from any of the locking means 40 to the lock determination unit 76, the lock determination unit 76 does not output a release signal to the calculation unit 80.

Next, as shown in FIG. 7, when unloading the container 20 carried to the lane 110 by the trailer, the trolley 16 is moved to the position of the lane 110. Next, the spreader 18 is lowered by the hoisting machine of the trolley 16. Next, the spreader 18 and the container 20 are fixed by, for example, a twist lock.
At this time, when the container 20 and the chassis 30 are fixed, a notification signal indicating that the chassis 30 and the container 20 are fixed is output from the chassis 30 to the control unit 16a. Then, before moving the spreader 18 upward, a warning that the container 20 and the chassis 30 are fixed is notified to the crane operator by a buzzer and a lamp.

  On the other hand, when the container 20 and the chassis 30 are not fixed, a notification signal (stop signal) is not output from the chassis 30 to the control unit 16a. Then, the spreader 18 is moved upward together with the container 20 by the hoisting machine. Next, the spreader 18 is moved in the horizontal direction with the container 20 held by the trolley 16. Then, for example, the trolley 16 stops on the other container 20, the spreader 18 is lowered, the holding of the spreader 18 is released, and the container 20 is stacked on the other container 20.

  Thus, in this embodiment, the locked state by the locking means 40 can be recognized before the container 20 is lifted by the spreader 18. For this reason, the container 20 is not lifted together with the chassis 30.

Further, in this embodiment, a receiving device and an alarm means are provided in the traction means such as a trailer head, and the alarm according to the notification signal is given to the driver of the traction means by the receiving device and the alarm means. Can be notified by buzzer and lamp. Thereby, for example, at the time of gate-in, the driver can determine whether or not the lock is released, and the gate staff can request the driver to release the lock. On the other hand, at the time of gate-out, it can be determined whether the driver is in a locked state, or the gate staff can request the driver to be in a locked state.
In this way, by providing the receiving device and alarm means on the trailer head, when the chassis enters the gate, it can be surely unlocked and avoiding the chassis entering the container yard in an unlocked state. can do. For this reason, it is avoided to return to the gate to release the lock, and useless work time is not consumed. That is, a decrease in work efficiency can be suppressed. Further, when leaving the container yard, it can be ensured that the container is locked. As a result, an accident due to inadequate locking can be prevented.

Furthermore, a receiving device and an alarm means can be provided at the gate arranged at the entrance of the container yard as well as the traction means such as the trailer head. With these receiving devices and warning means, it is possible to notify the gate staff of a warning corresponding to the notification signal with a buzzer and a lamp. Thereby, for example, at the time of gate-in, the gate staff can determine whether or not the lock is unlocked, and the driver can request the gate staff to release the lock. On the other hand, at the time of gate-out, it can be determined whether the gate staff is locked or the driver can request the gate staff to be locked.
In this case, when the chassis enters the gate, it is detected whether the unlocking is insufficient or not, so that it is possible to avoid entering the container yard in the unlocked state. Thereby, the fall of work efficiency can be suppressed. Moreover, when coming out of a container yard, it can be ensured that it is in the locked state. As a result, an accident due to inadequate locking can be prevented.

  In the chassis 30 of this embodiment, the placement detection means 60 is provided. For this reason, when the container 20 is placed on the chassis 30 by the spreader 18, the relative positions of the container 20 and the chassis 30 are shifted, and the twist lock pin 42 is inserted into the elongated hole 26 of any one corner box 24. Even if it is not inserted, it is detected that the placement is inappropriate. At this time, a notification signal is output from the chassis 30 to the control unit 16a, and an operator of the container crane 10 can be warned by sound, video, or other methods that the vehicle is not normally placed.

  Thus, during cargo handling, it can be detected that the container 20 is not properly placed on the frame 32 of the chassis 30, and the container 20 is placed so that the container 20 is placed on the frame 32 in an appropriate state. It can be mounted again. Thereby, it is only necessary to go to the gate and fix the container 20 by the locking means 40 with the container 20 properly placed. For this reason, it is not necessary to confirm again the mounting state of the container 20 with a gate. Therefore, it is not necessary to return to the lane 110 again because the loading state of the container 20 is inappropriate, and the work efficiency of cargo handling can be increased.

  In the present embodiment, the placement detection means 60 is provided. However, in the present invention, the placement detection means 60 is not necessarily provided, and the placement detection means 60 may not be provided. Considering the efficiency of work handling and the certainty, it is preferable to provide the placement detection means 60.

Further, the chassis 30 of the present embodiment is configured to output a notification signal when the lock unit is in a locked state from the notification unit 72 to the control unit 16a according to the detection result of the lock detection unit 50. It is not limited to this. The notification unit 72 of the chassis 30 may output a notification signal according to the locked state or the unlocked state by the locking unit 40 to the control unit 16a, and, similarly to the lock determination unit 76, the control unit 16a causes the locking unit 50 to The locked state or the unlocked state may be determined.
Further, as with the lock detection unit 50, the placement detection unit 60 may output a notification signal corresponding to the placement state of the container 20 to the control unit 16a. Also in this case, similarly to the placement detection means 60, the controller 16a may determine whether or not the container 20 and the frame 32 are in an appropriate placement state.

  Further, in the present embodiment, when the container 20 is lifted, the control unit 16a of the container crane 10 may output the locked state of the container 20 to the notification unit 72 of the chassis 30. Further, when the container 20 is placed on the chassis 30, the placement state of the container 20 may be output from the control unit 16 a of the container crane 10 to the notification unit 72 of the chassis 30.

  Furthermore, in this embodiment, when a chassis enters the gate, it is detected whether unlocking is insufficient or not by providing a receiving device and an alarm means on the traction means such as a trailer head or on the gate. Can do. Thereby, it can be avoided that the chassis enters the container yard in an unlocked state. For this reason, it is avoided to return to the gate to release the lock, and useless work time is not consumed. That is, a decrease in work efficiency can be suppressed. Moreover, when coming out of a container yard, it can be ensured that it is in the locked state. As a result, an accident due to inadequate locking can be prevented.

The container chassis of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and various improvements or modifications may be made without departing from the gist of the present invention. It is.
In the present embodiment, the present invention is applied to a remotely operated container crane. However, the present invention is not limited to this. For example, an operation room is provided in a trolley, and an operator boarded the operation room. It can also be applied to container cranes that handle cargo.

It is a schematic diagram which shows the portal container crane into which the chassis for containers which concerns on the Example of this invention is carried in. It is a typical perspective view which shows the chassis for containers concerning the Example of this invention with a container. It is a partial sectional side view which shows the principal part of the chassis for containers of FIG. (A) is a schematic diagram which shows the connection state of the alerting | reporting part provided in the chassis for containers of a present Example, a lock | rock detection means, and a mounting | wearing detection means, (b) is the alerting | reporting part of (a). It is a block diagram which shows a structure. It is a schematic diagram which shows the structure of the receiver provided in the portal container crane of a present Example. (A) And (b) is the schematic diagram which shows the cancellation | release method of the fixation by the locking means of the container chassis of a present Example in order of a process. It is a schematic diagram which shows the cargo handling operation | work of the container carried in by the chassis for containers by the portal container crane of a present Example.

Explanation of symbols

10 Gate type container crane (container crane)
DESCRIPTION OF SYMBOLS 12 Crane girder 14 Leg part 16 Trolley 18 Spreader 20 Container 22 Case 22a Lower surface 24 Corner box 26 Long hole 30 Container chassis (chassis)
32 Chassis frame (frame)
34 Wheel 40 Locking means 42 Twist lock pin 50 Lock detecting means 52 Sensor plate 54, 70 Proximity sensor 60 Placement detecting means 72 Notification section

Claims (13)

To each of the four corners of the housing, the container corner fitting is provided for securing itself, when integrated in the container yard with container cranes, placing the container, for transporting a chassis for the container,
A chassis frame on which the container is placed;
Respectively provided at positions corresponding to the corner fittings of the container of the chassis frame, and locking means for fixing the said chassis frame and the container via the respective corner fittings of the container,
It is provided in each of the locking means, and detects whether the locking means is in an unlocked state in which the container and the chassis frame are unlocked or in an unlocked state in which the fixing is not released. Detecting means for
Before the container is lifted from the container chassis by the container crane by the container crane, the container and the chassis frame are fixed by at least one locking means, or the container chassis is A container chassis, comprising: a notification means for outputting a notification signal when the container and the chassis frame are not fixed by the locking means when the container is placed and travels . First receiving means, a container chassis according to claim 1 which is provided on the container crane that is disposed on the container yard to receive the broadcast signal.   The container chassis according to claim 1 or 2, wherein the second receiving means for receiving the notification signal is provided in a pulling means for pulling the chassis frame. The container chassis according to any one of claims 1 to 3, wherein a third receiving means for receiving the notification signal is provided at a gate disposed at an entrance of the container yard. The container chassis according to claim 1, wherein the detection unit is a detection sensor that detects the unlocked state or the unlocked state of the lock unit. The detection means includes a sensor plate provided in the lock means and a proximity sensor that detects whether or not the sensor plate has approached a predetermined distance, and the unlocking state of the lock means or the lock The container chassis according to claim 1, wherein the non-release state is detected based on whether or not the sensor plate is detected by the proximity sensor. The container chassis according to claim 6, wherein the locking means is a twist lock that is fixed by being inserted into a long hole formed in a lower surface of the corner fitting of the container and rotated. The lock means is inserted into an elongated hole formed in the bottom surface of the corner fitting of the container, and is rotated and fixed, a rotation shaft connected to the twist lock pin, and the rotation shaft is rotated. The container chassis according to claim 6, further comprising a lever for causing the container to move. The container chassis according to claim 8, wherein the sensor plate of the detection unit is provided on the rotation shaft of the lock unit. Placement detection for detecting whether or not each corner of the container and each locking means provided corresponding to each corner are placed in an appropriate state with respect to the chassis frame. container chassis according to any one of claims 1 to 9, means is provided. The container chassis according to claim 10, wherein the placement detection means is a detection sensor that is provided at each of the at least two corners of the container and detects a placement state of the container with respect to the chassis frame. The placement detection means includes a detection pin that is pushed down by the lower surface of the container, a spring that biases the detection pin upward, and a proximity sensor that detects the detection pin pushed down by the lower surface of the container, The detection device according to any one of claims 1 to 11, wherein, in all the placement detection means, the proximity sensor detects the detection pin to detect that the container is placed in an appropriate state with respect to the chassis frame. The chassis for containers according to any one of the above. The informing means includes the container crane arranged in the container yard, a towing means for towing the chassis frame, and a transmitting means for transmitting an informing signal to a gate arranged in the entrance of the container yard. Item 13. A container chassis according to any one of Items 1 to 12.

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