JP3332878B2 - Box positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped object positioning device, and more particularly, to a container positioning device for positioning a container at a predetermined position of a container relay stand provided on a container crane and landing the container on the floor. Things.

[0002]

2. Description of the Related Art FIG. 5 is a structural view showing an example of a conventional container crane, FIG. 6 is a structural view of a conventional container positioning device provided on a container junction of the container crane, and FIG. FIG. 8 is a plan view, and FIG. 8 is an explanatory view showing the direction in which the container crane lowers the container to the container relay stand.

[0005] As shown in FIG. 5, a container crane 1 is installed on a quay g such as a container pier, and cargo handling is performed between the quay g and the container ship s berthing on the quay g. , Or loading / unloading of container n from container ship s to quay g.

[0004] Specifically, a rail 13 is laid on the quay g, on which the marine leg 3a and the land leg 3b are laid.
And are provided so that they can run freely. A crane girder 2 is erected above the sea leg 3a and the land leg 3b, and a first trolley 4 and a second trolley 5 are provided on the sea side and the land side of the crane girder 2 so as to be able to traverse. ing. Each of the first trolley 4 and the second trolley 5 includes a rope 11 wound or unwound by a hoist (not shown), and a spreader 14 attached to a lower end of the rope 11.

[0005] A container relay device 6 is provided between the first trolley 4 and the second trolley 5 of the crane girder 2 so as to be able to traverse, and the container relay device of the container relay device 6 will be described in detail later. The table is provided with a container positioning device. In addition, as shown by the dotted line in FIG. 5, there is also an example in which the container relay truck 6 'is arranged to be able to move up and down between the sea legs 3a. The crane girder 2 is provided with a driver's cab 10 in which a driver can ride, so that the driver's cab can move freely.

Accordingly, in the container crane 1 having the above structure, the container n is unloaded from the container ship s to the quay g in the following manner.

First, the driver in the cab 10 receives the first
By operating the trolley 4, the container n loaded on the container ship s is gripped by the spreader 14, and in this state, the rope 11 is wound up by a hoist, so that the container n is lifted and transported to the quay g side, It is once placed on the container relay device 6.

Subsequently, the driver operates the second trolley 5, grips the container n placed on the container relay device 6 with the spreader 14, and winds the rope 11 with a hoist in this state, so that the container n is lifted and further transported to the quay g side, and then the unloading vehicle 9 waiting at the quay g
Unload it.

When loading the container n into the container ship s, the reverse operation is performed.

[0010] In the above cargo handling operation,
In order to efficiently carry out the relay operation of the container n, it is necessary to position the container n at a predetermined position of the container relay device 6 as accurately as possible and land it thereon. Therefore, conventionally, a container positioning device as shown in FIGS. 6 and 7 has been used.

That is, as shown in FIGS. 6 and 7, the conventional container positioning device is configured such that an inclined surface 1 is provided on a container relay table 6a provided in a container relay device 6 (see FIG. 5).
A plurality of fixed guides 12 having 2a are opposed to each other with an interval corresponding to the width of the container n.

Therefore, according to this container positioning device, as shown in FIG. 6, the container n which is suspended by the rope 11 and descends while swinging is received by the inclined surface 12a of one or both fixed guides 12. Slope 12
It is possible to land on the predetermined position 6b while sliding along the line a.

[0013]

However, the above-described conventional container positioning apparatus has the following problems.

The bottom edge of the swinging container n collides with the inclined surface 12 a of the fixed guide 12, and then the container n slides down while both are in contact with each other, so that the bottom of the container n and the load in the container n are damaged. Loud noise is generated, and the downhill of the container n may be hindered. Therefore, in order to suppress the occurrence of such damage and noise, it is necessary to reduce the descending speed of the container n, but as a result, the time required for the container n to land on the floor becomes long.

When the amount of shake of the container n is large,
In order to cope with a case where the error between the stop position of the first trolley 4 or the second trolley 5 (the stop position of the container n) and the predetermined position 6b is large, etc. It is necessary to increase the thickness of the fixed guide 12 and make the inclined surface 12a a steep angle. As a result, the height of the fixed guide 12 increases and the guide time becomes longer. That is, this also increases the container landing time.

In order to reduce the container landing time as much as possible, it is effective to perform the oblique lowering operation as indicated by the dotted line in FIG. 8, that is, the traverse of the first trolley 4 and the lowering by the hoist at the same time. However, in the conventional container positioning device, as shown by a solid line in FIG. 8, the container n is temporarily stopped above the fixed guide 12 and then dropped directly below, which is disadvantageous in shortening the container landing time. is there.

Accordingly, the present invention has been made in view of the above-mentioned prior art, and enables a box-like object such as a container to be positioned and landed on a predetermined position such as a container intermediary stand in a short time. It is an object of the present invention to provide a box-shaped object positioning device capable of suppressing the occurrence of damage and noise.

[0018]

Means for Solving the Problems A first method for solving the above problems is described below.
The box-shaped object positioning device of the present invention is a box-shaped object positioning device for positioning the box-shaped object at the predetermined position when the box-shaped object lifted by a crane is lowered to land on a predetermined position. A swing arm pivotable about a pivot axis of a base end, a pivot drive device for pivoting the swing arm, and a guide roll rotatably provided at a distal end of the swing arm. A plurality of object positioning devices are arranged facing each other at an interval corresponding to the width of the box-shaped object, and when the box-shaped object is lowered, the swing arm is swung to stand up, whereby the guide is provided. A configuration in which the box-shaped object is guided and landed at the predetermined position while being supported so as to sandwich both side surfaces of the box-shaped object with a roll, and the box is When the object is lowered obliquely, first, the side of the box is supported by the guide roll on one side by turning the swing arm on one side to stand up by the turning drive device. The movement of the box is then restrained, and then the swing drive device swings the swing arm on the opposite side to stand up, so that the guide roll on the opposite side also supports the side surface of the box-shaped object, and thereby, of the box-like material with both side surfaces being positioned by being supported by the guide rolls, descends beneath while being guided by the guide roll is implanted in a predetermined position,
When the box-shaped object is lowered directly below, the turning drive
The swing arm is swiveled at the same time by the
By standing up, the guide rolls
The box-shaped object is supported so as to sandwich both side surfaces, and the box-shaped object is configured to descend and land while being guided by the guide roll .

[0019]

Further, the box-shaped object positioning device according to the second invention comprises:
In box-shaped dose locating device of bright first shot, the guide roll is characterized in that provided at the distal end portion of the swing arm via an elastic body.

Further, the box-shaped object positioning device according to the third invention comprises:
In the box positioning device according to the first or second aspect of the present invention, a rubber coating is applied to an outer periphery of the guide roll.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. Here, the container positioning device will be described, and the overall configuration of the container crane is the same as that of the related art (FIG. 5), and description and illustration are omitted.

FIG. 1 is a plan view showing a configuration of a container positioning device according to an embodiment of the present invention, FIG. 2 is a sectional view showing a guide roll mounting structure of the container positioning device, and FIG. 3 is an operation of the container positioning device. FIG. 4 is an explanatory view showing another operation of the container positioning device.

<Structure> As shown in FIG. 1, a container positioning device 20 includes a swing arm 21 that can swing around a swing shaft 31 at a base end portion, and a swing arm 21 that swings by swinging the swing shaft 31. Swing hydraulic motor 3
0, and a guide roll 22 rotatably mounted via a rotation shaft 32 to a guide roll mounting portion 21a at the tip of the swing arm 21.

Then, a plurality of container positioning devices 20 having the above-described configuration (four in the illustrated example: 2 × 2 sets) are used, and the container relay table 16 installed in the container relay device 6 of the container crane 1 (see FIG. 5). Above, they are arranged facing each other with an interval corresponding to the width dimension of the container n.

At this time, the turning direction of the swing arm 21
Is the width direction of the container n.
When the swing arm 21 is turned to one side and tilted outward,
The droll 22 opens outward to the state shown in FIG.
You. On the other hand, the swing arm 21 is turned to the other side to stand up.
Then, both sides of the container n are
n _a, N_bIn a state where it is supported so as to sandwich it.
To guide the container n to land on the predetermined position 16a
Will be able to do it.

Specifically, when the positioning of the container n is not performed, all the two sets (4
Pressure oil is simultaneously supplied to the swing hydraulic motors 30 of the two sets, and the swing hydraulic motors 30 are rotated to one side, whereby all the two sets of swing arms 21 are simultaneously rotated to one side, and the guide rolls 22 are rotated. It is designed to open outward.

When the positioning of the container n is performed, all the two sets of the oscillating hydraulic motors 3 are driven by the hydraulic circuit.
0 and simultaneously rotate the oscillating hydraulic motor 30 to the other side, so that all two sets of swing arms 2
1 is simultaneously turned to the other side to stand up, or the hydraulic circuit supplies single pressure oil to the oscillating hydraulic motor 30 of each set and each unit, and the oscillating hydraulic motor 30 is rotated to the other side. Thereby, the swing arm 21 of each set and each unit can be independently turned to stand up.

Thus, the container n is guided and positioned in a state where the both sides n _a and n _b of the descending container n are simultaneously supported by the guide rolls 22 so as to land on the predetermined position 16a, or After the container n descending is once supported on one side by the guide roll 22 on one side, the container n is also supported on the guide roll 22 on the opposite side, and the container n is guided and positioned in the state where both sides are supported, and the predetermined position 16a It can be made to land on the ground.

Further, as shown in FIG.
2 is attached to the guide roll attaching portion 21a via a disc spring 28 as a shock absorbing means.

More specifically, the guide roll 22 is rotatably attached to the distal end of the guide roll support member 23 via the rotating shaft 32. Guide roll mounting part 21a
Is formed with an inner hole 21b. Further, a fixing flange 25 is fixed to the left end of the guide roll mounting portion 21a in the figure by a tightening bolt 29, and an inner hole 25a is formed in the fixing flange 25. The guide roll support member 23 is provided with an inner hole 21b of the guide roll mounting portion 21a.
And the inner hole 25a of the fixing flange 25, and
A fixing nut 26 is screwed into the screw portion 23 b protruding outside the fixing flange 25.

A disc spring 28 is provided in the inner hole 21b of the guide roll mounting portion 21a so as to be located between the step 23a of the guide roll support member 23 and the fixed flange 25. Further, the outer periphery of the guide roll 23 is provided with a rubber coating 22a. Reference numeral 33 in FIG. 2 denotes a key for stopping the rotation of the guide roll support member 23. The key 33 is disposed to face the outer peripheral portion of the guide roll support member 23, and can only move in the axial direction.

<Operation / Effect> Next, the operation and effect of the container positioning device 20 will be described. In the following, a case where the container n on the container ship s is transported to the unloading vehicle 9 waiting on the quay g in FIG. 5 will be described as an example.

First, the driver in the cab 10 receives the first
By operating the trolley 4, the container n loaded on the container ship s is gripped by the spreader 14, and in this state, the rope 11 is wound up by a hoist, so that the container n is lifted and transported to the quay g side, It is once placed on the container relay device 6. In this case, in order to shorten the relay work time of the container n, it is necessary to land the container n on the predetermined position 16a of the container relay stand 16 as accurately as possible.

FIG. 3 shows that the first trolley 4 is operated to convey the container n to a position above the container relay stand 16, where the vibration of the container n is attenuated to some extent. The case where n is lowered directly below (in the case of the solid line in FIG. 8) is shown.

In this case, as shown in FIG. 3, when the container n approaches the container relay stand 16 to a predetermined height, the swing hydraulic motors 30 of all the units are simultaneously operated, and these swing hydraulic motors 30 are actuated. Thereby, all the swing arms 21 are simultaneously turned and raised. As a result, FIG.
As indicated by the dashed line, the container n is supported by the guide rolls 22 so as to sandwich both sides n _a and n _b of the container n. The container n positioned in this way further descends while being guided by the guide rolls 22 to a predetermined position. Land accurately on 16a. Further, the sliding down of the container n after being supported by the guide rolls 22 is smoothly performed by the free rotation of the guide rolls 22.

FIG. 4 shows a case where the container n is obliquely lowered by traversing the first trolley 4 and lowering it by the hoist simultaneously (in the case of the dotted line in FIG. 8).

In this case, as shown in FIG. 4, when the container n approaches the container relay stand 16 from diagonally above the container relay stand 16, first, the container positioning disposed on one side (the right side in FIG. 4) is performed. The swing hydraulic motors 30 of the device 20 are operated, and the swing arm 21 on one side is turned by the swing hydraulic motors 30 to stand up. As a result, as shown by the solid line in FIG. 4, the container n is one side of the guide right side n _a container n roll 22 is supported by the movement is restricted.

Subsequently, the swing hydraulic motor 3 of the container positioning device 20 disposed on the opposite side (the left side in FIG. 4)
0, and the swing arm 21 on the opposite side is turned upright by these rocking hydraulic motors 30. As a result, as shown by the two-dot chain line in FIG. 4, for supporting the side surface n _b of the container n even opposite side of the guide roll 22. Thus, both side surfaces n _a by both sides of the guide roll 22, n _a is positioned by being supported container n may precision drops further beneath while being guided by the guide roll 22 to a predetermined position 16a of the container attendant 16 Landing. Also,
The sliding down of the container n after being supported by the guide rolls 22 is smoothly performed by the free rotation of the guide rolls 22.

Further, during the above positioning operation, the container n
Guide roll 22 (swing arm 2)
In 1), a large impact force acts in some cases, but this impact force is applied to the disc spring 2 provided on the guide roll mounting portion 21a.
Absorbed by 8. The rubber coating 22a applied to the outer periphery of the guide roll 22 reduces noise when the container n slides down and protects the container n.

After that, the container n placed on the container relay stand 16 is lifted by the driver operating the second trolley 5 on the land side, transported, and carried out by the unloading vehicle waiting on the quay g. At this time, the landing of the container n on the container relay stand 16 by the first trolley 4 is accurately performed by the container positioning device 20, so that the relay operation of the container n by the second trolley 5 is performed. Is performed efficiently.

As described above, the container according to the present embodiment
According to the positioning device 20, the rotation axis 31 around the base end is
Swing arm 21 and swing arm 2
Oscillating hydraulic motor 30 for swiveling 1 and swing arm
21 is rotatable on the guide roll mounting portion 21a at the tip end.
And a guide roll 22 provided.
Plural units of container positioning device 20, width of container n
Opposing each other at an interval corresponding to the
When it is lowered, the swing arm 21 is swung
By standing, the container n
Both sides n_a, N _bWith the container sandwiched between the containers
n at a predetermined position 16a of the container relay stand 16
The swing arm 21 is configured to land on the floor.
Simultaneously swing or arbitrarily swing independently and stand up
The container n is slightly shaken.
If the container n is dropped directly below
Of course, even when descending diagonally, the container n
Position accurately and easily and land in a short time
be able to. Also, for free rotation of the guide roll 22
Of the container n after being supported by the guide rolls 22.
The descent can be performed smoothly.

Further, the guide roll is connected to a guide roll mounting portion 21 at the tip end of the swing arm 21 via a disc spring 28.
a, the impact force acting on the guide roll 22 supporting the container n during the above positioning is
Is absorbed by Therefore, it is possible to prevent the container n and the load in the container n from being damaged.

Further, since the outer periphery of the guide roll 22 is provided with the rubber coating 22a, the noise when the container n slides down can be reduced and the container n can be protected.

In the above description, the swing hydraulic motor 30 is used as the swing drive device of the swing arm 21. However, the present invention is not limited to this. The swing drive device other than the hydraulic motor is used to swing the swing arm 21. It may be. For example, the turning shaft 31 of the swing arm 21 may be turned by a turning drive device combining a hydraulic cylinder and a link mechanism.

In the above description, the disc spring 28 is used, but the shock absorbing means is not particularly limited as long as it is an elastic body having a damping function or a combination thereof.

[0047]

As described above in detail with the embodiments of the present invention, the box-shaped object positioning apparatus according to the first invention is used when the box-shaped object lifted by a crane is lowered to land on a predetermined position. A box-shaped object positioning device for positioning the box-shaped object at the predetermined position, a swing arm that can be turned around a turning axis of a base end portion, a turning drive device that turns the swing arm, A guide roll rotatably provided at the tip of the swing arm, and a plurality of the box-shaped object positioning devices, which are arranged facing each other at an interval corresponding to the width dimension of the box-shaped object, When the box-shaped article is lowered, the swing arm is turned upright to guide the box-shaped article with the guide rolls supporting both sides of the box-shaped article. Along with being configured to land on a predetermined position, when the box-shaped object is obliquely lowered by the crane, first, the swing drive device swings the swing arm on one side to stand up, thereby allowing one side to stand. By supporting the side surface of the box-shaped object with the guide roll and restraining the movement of the box-shaped object, and subsequently turning the swing arm on the opposite side to stand by the turning drive device, The guide roll also supports the side surface of the box-shaped object, so that the box-shaped object positioned and supported on both side surfaces by the guide rolls on both sides thereof is lowered directly below while being guided by the guide roll to a predetermined position. landed in, it is lowered beneath the box-like material
Sometimes, the swing arm causes the swing arm
All at the same time to stand up
A state in which both sides of the box-shaped object are supported by a droll
While the box is guided by a guide roll.
It is configured to descend and land on the floor .

Therefore, according to the box-shaped article positioning device of the first invention, even if the box-shaped article has some run-out, the box-shaped article can be accurately and easily positioned and landed in a short time. Can be. Also, due to the free rotation of the guide roll,
Sliding down of the box-shaped object after being supported by the guide roll can be performed smoothly. When dropping a box in an oblique direction
However, it is easy to position the box-shaped object accurately and easily
Can be landed.

[0049]

[0050]

Also, the box-shaped object positioning device of the second invention is
In box-shaped dose locating device of bright first shot, the guide roll is characterized in that provided at the distal end portion of the swing arm via an elastic body.

Therefore, according to the box-shaped object positioning apparatus of the second invention, the impact force acting on the guide roll supporting the box-shaped object when positioning the box-shaped object is absorbed by the elastic body. For this reason, damage to the box-shaped object (damage to the container and the load in the container when the box-shaped object is a container) can be prevented.

Further, the box-shaped object positioning device according to the third invention comprises:
In the box positioning device according to the first or second aspect of the present invention, a rubber coating is applied to an outer periphery of the guide roll.

Therefore, according to the box positioning device of the third invention, the noise at the time of sliding down the box can be reduced by the rubber coating, and the box can be protected.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a container positioning device according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a guide roll mounting structure of the container positioning device.

FIG. 3 is an explanatory view showing an operation of the container positioning device.

FIG. 4 is an explanatory view showing another operation of the container positioning device.

FIG. 5 is a configuration diagram illustrating an example of a conventional container crane.

FIG. 6 is a configuration diagram of a conventional container positioning device provided on a container relay stand of the container crane.

FIG. 7 is a plan view of the container positioning device.

FIG. 8 is an explanatory view showing a direction in which a container descends to the container relay stand by the container crane.

[Explanation of symbols]

 Reference Signs List 20 container positioning device 21 swing arm 21a guide roll mounting portion 21b inner hole 22 guide roll 22a rubber coating 23 guide roll support member 23a step 23b screw portion 25 fixing flange 25a inner hole 26 fixing nut 28 disc spring 29 tightening bolt 30 swing Dynamic hydraulic motor 31 Rotation axis 32 Rotation axis 33 Key

────────────────────────────────────────────────── ─── Continued from the front page Examiner Minoru Torii (56) References JP-A-4-94326 (JP, A) JP-A-62-264193 (JP, A) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) B66C 13 / 06,13 / 08

Claims (3)

(57) [Claims] 1. A box-shaped object positioning device for positioning a box-shaped object at the predetermined position when the box-shaped object lifted by a crane is lowered and landed on a predetermined position. A swing arm that can swing around a swing axis of the swing arm, a swing drive device that swings the swing arm, and a guide roll that is rotatably provided at a distal end portion of the swing arm. Plural units are arranged facing each other at an interval corresponding to the width dimension of the box-shaped object, and when the box-shaped object is lowered, the swing arm is swung to stand up, so that the box is formed by the guide roll. The box-shaped object is guided to land on the predetermined position while being supported so as to sandwich both sides of the box-shaped object, and the box-shaped object is lowered obliquely by the crane. First, by turning the swing arm on one side to stand up by the turning drive device, the side of the box-shaped object is supported by the guide roll on one side to restrain the movement of the box-shaped object. Then, by turning the swing arm on the opposite side by the swing drive device to stand up, the guide roll on the opposite side also supports the side surface of the box-shaped object, and the guide rolls on both sides allow the guide rolls on both sides to support the box-shaped object. It said box-like material surface is positioned by being supported is, descends beneath while being guided by the guide roll is implanted in a predetermined position, is lowered beneath the box-like material
The swinging drive device causes the swing
By turning all the arms simultaneously and standing up,
It was supported so that both sides of the box-like material were sandwiched by id rolls
State, and the box-like object is guided by the guide roll.
A box-shaped object positioning device, characterized in that it is configured to descend while landing . 2. The box-shaped object positioning device according to claim 1, wherein the guide roll is provided at a tip end of the swing arm via an elastic body. 3. The box-shaped object positioning device according to claim 1, wherein a rubber coating is applied to an outer periphery of the guide roll.