JP6392723B2 - Transport container and its packing method - Google Patents

Description

  The present embodiment relates to a transport container and a method for stacking the same.

  Conventionally, cranes have been used for cargo handling of transport containers. For example, when loading a shipping container on a ship or in a hold, the crane can hang the spreader suspended on the hoisting rope of the crane and hold the upper part of the shipping container. Then, it is lifted and transported to the ship and to the stacking area of the hold. Thereafter, the spreader is suspended and the transport container is placed.

  When transport containers are stacked, if the lowering speed of the hoisting rope is not sufficiently lowered when coming into contact with the lower transport container, the transport containers are seriously damaged. For this reason, it is desired that the transport container to be loaded is brought into contact with the lower transport container after sufficiently reducing the speed of the hoisting rope.

Japanese Patent No. 2014-133635

  In the above-described method, if the timing for lowering the hoisting speed of the hoisting rope is too early, the transportation efficiency is deteriorated.On the other hand, if the timing for lowering the speed is too slow, there is a risk of causing great damage to the transport container due to a collision, In order to efficiently bring the transport containers into contact with each other, an advanced operation technique is required, which greatly depends on the skill of the operator who operates the crane.

  In addition, by introducing a system that automatically detects the arrangement of shipping containers, it is possible to automatically decelerate so that shipping containers do not collide with each other, but if the deceleration speed is reduced, it takes a long time to contact, Transportation efficiency decreases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a transport container having high transport efficiency while reducing damage caused by collision between transport containers.

  The transport container according to the present embodiment includes a box-shaped container body, a magnetic line generator that is attached to the upper surface and the lower surface of the container body, outputs magnetic lines that are the same magnetic poles on the outside of the container body, and the magnetic field lines. And a magnetic field line power supply unit to be controlled.

FIG. 1 is a view showing a transport container according to the present embodiment. FIG. 2 is a cross-sectional view taken along a dotted line AA 'in FIG. FIG. 3 is a diagram illustrating a functional configuration of the magnetic force line power supply unit. FIG. 4 is a diagram illustrating the stacking of the shipping container according to the present embodiment. FIG. 5 is a cross-sectional view showing a transport container according to another embodiment of the present invention.

The transport container according to the present embodiment will be described in detail with reference to FIGS.
FIG. 1 is a view showing a transport container according to the present embodiment, and FIG. 2 is a cross-sectional view taken along a dotted line AA ′ in FIG.

  As shown in FIG. 1, a transport container 1 according to the present embodiment is output from a box-shaped container main body 2, a magnetic force line generation unit 3 that is attached to the container main body 2 and outputs magnetic lines of force, and a magnetic force line generation unit 3. A magnetic field power supply unit 4 for controlling the magnetic field lines is provided.

  The magnetic force line generator 3 is an electromagnet and is attached to the upper surface and the lower surface of the container body 2. The attachment location of the magnetic force line generation unit 3 is not particularly limited as long as the transport containers 1 can generate a certain space by the repulsive force of the magnetic force line generation unit 3, and is attached to, for example, substantially the entire upper surface and lower surface of the container body 2. Alternatively, the container body 2 may be provided at the four corners of the upper surface and the lower surface. The magnetic force line power supply unit 4 performs control such that the magnetic force line generation unit 3 outputs magnetic force lines that form the same magnetic pole (N pole or S pole) outside the container body 2.

  FIG. 3 is a functional configuration diagram of the magnetic field power supply unit 4. The magnetic force line power supply unit 4 includes an excitation power supply part 41, a magnetic force line control part 42, and a receiving part 43. The excitation power supply unit 41 is connected to the magnetic force line generation unit 3 and the magnetic force line control unit 42. The excitation power supply unit 41 adjusts the magnetic force to the magnetic force line generating unit 3 and switches the magnetic poles based on the signal output from the magnetic force line control unit 42.

  The power supplied from the excitation power supply unit 41 to the magnetic force line generation unit 3 may be in a form in which a power source such as a battery is provided inside the transport container 1 or may be supplied from outside the transport container 1. In a form in which power is supplied from the outside of the transport container 1, the power is connected to the transport container 1 when the transport container 1 is stacked.

  The magnetic force line control unit 42 is connected to the excitation power supply unit 41 and the reception unit 43. Based on the signal output from the receiving unit 43, the magnetic line control unit 42 outputs a signal to the excitation power supply unit 41 to adjust the magnetic force to the magnetic line generation unit 3 and to switch the magnetic pole. The receiving unit 43 outputs a signal received from the main controller 17 of the container crane 10 described later to the magnetic force line control unit 42 via the antenna 43a.

  FIG. 4 is a diagram illustrating the stacking of transport containers according to the present embodiment using a container crane.

  A container crane 10 used for cargo handling of the transport container 1 according to the present embodiment includes a spreader 11 that lifts the transport container 1. The spreader 11 is connected to a hoisting rope 13 wound around the hoisting drum 12. The hoisting drum 12 is connected to the hoisting motor 14 and the hoisting position detector 15. The hoisting motor 14 is connected to the driving device 16.

  The hoisting motor 14 rotates and drives the hoisting drum 12 based on a signal output from the driving device 16, and the spreader 11 is wound up and down. When the transport container 1 is lifted, for example, lock pins (not shown) provided at the upper four corners of the spreader 11 are inserted into key holes provided at the upper four corners of the transport container 1 and rotated by 90 degrees. Lift the spreader 11 together.

  The hoisting position detector 15 detects the lifting position of the transport container 1. The hoisting position detector 15 and the driving device 16 are connected to the main controller 17. A winding operation main controller 18 is connected to the main controller 17. Moreover, the master controller 17 receives a signal from the magnetic field power source unit 4 of the transport container 1 via the antenna 17a. The main controller 17 controls the overall operation of the container crane 10 based on signals from the hoisting position detector 15, the hoisting operation main controller 18, and the magnetic field line power supply unit 4.

  The transport container 1a connected to the spreader 11 of the container crane 10 is unwound toward the upper surface of the transport container 1b placed on the ground or a loading place P such as a hold. When the transport container 1a is lowered, a magnetic pole (arrow G1 in the figure) generated from the magnetic line generator 3a installed on the lower surface of the transport container 1a and a magnetic line generator 3b installed on the upper surface of the transport container 1b are generated. Since the magnetic poles (arrow G2 in the figure) are the same, a repulsive force is generated between the lower surface of the transport container 1a and the upper surface of the transport container 1b.

  The lowering of the transport container 1a stops with a certain space between the transport container 1b and a repulsive force generated between the transport container 1a and the transport container 1b. Then, the magnetic field power source 4a that controls the magnetic field lines of the magnetic field generator 3a installed on the lower surface of the transport container 1a and the magnetic field power source unit 4b that controls the magnetic field lines of the magnetic field generator 3b installed on the upper surface of the transport container 1b. The magnetic force of the magnetic force line generating portions 3a and 3b is gradually reduced, and the repulsive force between the transport container 1a and the transport container 1b is reduced. Then, when the lower surface of the transport container 1a and the upper surface of the transport container 1b contact or immediately before contact, the power supply from the magnetic force line power supply units 4a and 4b is turned off. Since the transport container 1a stops in a state where a certain space is maintained between the transport container 1b and contacts thereafter, the impact caused by the collision between the transport container 1a and the transport container 1b can be reduced.

  Next, an example of the stacking operation of the transport container according to the present embodiment will be described more specifically.

  First, the crane operator connects the transport container 1a to the spreader 11 of the container crane 10, lifts the hoisting rope 13, lifts the transport container 1a via the spreader 11, and moves it to a place where it is stacked. The loading place is above the transport container 1b that is already placed. The transport container 1a is moved onto the transport container 1b which is the lowering position, the hoisting operation main controller 18 is operated, and the hoisting rope 13 is lowered.

  A signal to the effect that the winding operation master controller 18 is to be lowered is input to the master controller 17. The master controller 17 to which the signal for lowering is input outputs the signal for lowering to the drive unit 16 as it is. The driving device 16 to which the signal indicating the lowering is input drives the hoisting motor 14 and rotates the hoisting drum 12 around which the hoisting rope 13 is wound in the lowering direction to connect the spreader 11 to the transporter. Lower the container 1a.

  The position of the transport container 1a is detected by a hoisting position detector 15. The position signal of the hoist position detector 15 is input to the master controller 17. The master controller 17 to which the position signal from the hoisting position detector 15 is input calculates the deceleration start position and outputs a signal for reducing the lowering speed to the driving device 16. The drive device 16 to which a signal for reducing the lowering speed is input outputs a signal for decreasing the rotational speed of the hoisting drum 12 to the hoisting motor 14, and the hoisting motor 14 reduces the rotational speed of the hoisting drum 12. The speed of lowering the transport container 1a is reduced.

  After calculating the deceleration start position, the main controller 17 applies the magnetic field power source 4a that controls the lower surface side electromagnet via the antenna 17a to excite the electromagnet that is the magnetic field line generation unit 3a on the lower surface side of the transport container 1a. Send excitation start signal. At the same time, in order to excite the electromagnet, which is the magnetic line generator 3b on the upper surface side of the transport container 1b, an excitation start signal is transmitted to the magnetic line power supply unit 4b that controls the electromagnet on the upper surface side via the antenna 17a.

  The transport container 1a approaches the transport container 1b in a state where the descent is decelerated from the deceleration start position and is at a low speed. And the repulsive force of the electromagnet on the lower surface side of the transport container 1a and the electromagnet on the upper surface side of the transport container 1b acts, and the transport container 1a stops descending while maintaining a certain spatial distance from the transport container 1b. When the lowering of the transport container 1a stops, the hoisting rope 13 connected to the spreader 11 is loosened. The driving device 16 that drives the hoisting motor 14 detects that the torque has suddenly changed due to the hoisting rope 13 being loosened, and outputs a signal to that effect to the main controller 17. The master control device 17 to which a signal indicating that the torque has suddenly changed outputs a signal for stopping the lowering of the transport container 1 a to the drive device 16. The driving device 16 to which the signal for stopping the lowering of the transport container 1a is input stops the driving of the hoisting motor 14.

  Thereafter, the main controller 17 transmits an excitation end signal to the magnetic field power source 4a that controls the lower surface side electromagnet, and simultaneously transmits an excitation end signal to the transport container 1b to the magnetic field power source unit 4b that controls the upper surface side electromagnet. , Decrease the excitation gradually. Thereby, the repulsive force of the lower surface of the transport container 1a and the upper surface of the container 1b becomes small gradually, and the lower surface of the transport container 1a and the upper surface of the transport container 1b contact. After the contact, the spreader 11 is separated from the transport container 1a, and the loading operation is completed.

  Next, a transport container according to another embodiment of the present invention will be described with reference to FIG. In the following description, a configuration that is different from the shipping container 1 will be mainly described, and the same configuration is denoted by the same reference numeral, and the description is omitted.

  FIG. 5 is a view showing a cross section of a transport container 20 according to another embodiment of the present invention. The transport container 20 has a configuration in which the magnetic force line generators 3 attached to the upper and lower surfaces of the transport container 1 are further provided on both side surfaces. Thus, by providing the magnetic force line generation | occurrence | production part 31 on the both sides | surfaces of the transport container 20, not only the collision of the transport containers in the up-and-down direction but also the impact of the collision in the horizontal direction can be reduced.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1, 1a, 1b, 20 ... Transport container 2 ... Container main body 3, 3a, 3b, 31 ... Magnetic field generation | occurrence | production part 4, 4a, 4b ... Magnetic field power supply part
DESCRIPTION OF SYMBOLS 10 ... Container crane 11 ... Spreader 12 ... Hoisting drum 13 ... Hoisting rope 14 ... Hoisting motor 15 ... Hoisting position detector
16 ... Drive device 17 ... Master controller
18 ... Hoisting operation main controller 41 ... Excitation power supply unit 42 ... Magnetic field line control unit 43 ... Reception unit

Claims (5)

A box-shaped container body;
A magnetic force line generator that is attached to the upper and lower surfaces of the container main body and outputs magnetic force lines that are the same magnetic poles outside the container main body,
A magnetic field power source for controlling the magnetic field lines;
A shipping container characterized by comprising:   The transport container according to claim 1, wherein the magnetic line of force generator is further attached to a side surface of the container body.   The transport container according to claim 1 or 2, wherein the magnetic poles of the magnetic field line generation unit can be switched by the magnetic field line power source unit.   The transport container according to claim 1, wherein the magnetic field line generation unit is an electromagnet. A method for stacking a transport container according to any one of claims 1 to 4,
The magnetic field lines that are the same magnetic poles are output to the magnetic field line generation part on the lower surface side of the transport container suspended by a crane and the magnetic field line generation part on the upper surface side of the transport container that is placed, and by the repulsive force of the magnetic field lines, After stopping the lowering of the transport container suspended from the crane with a space between the upper surface of the transport container placed, the transport container was placed on the lower surface of the transport container suspended from the crane. A method for stacking a transport container, comprising contacting the upper surface of the transport container.

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