JPH10120355A - Side shift device for container spreader - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To quickly position a spreader with respect to a container. SOLUTION: This is a container spreader side shift device for moving a container spreader for gripping a container in the longitudinal direction of the container, the movable device being mounted on a lower surface of a sheave block and capable of being moved in the longitudinal direction of the container by four roller supporting members. And a side shift beam for detachably supporting the spreader by locking means provided at four corners, and a side shift beam moving means provided between the sheave block and the side shift beam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side shift device for a container spreader used as a hanging tool of a container crane.

[0002]

2. Description of the Related Art The loading and unloading of container cranes includes loading and unloading containers on a container ship installed on a quay, and loading or unloading containers on a container yard behind the quay. Each of these container cranes is equipped with a container spreader as a container hanger.

[0003] Conventional container spreaders are generally
A twist that is fixed to the lower surface of the sheave block and has a T-shaped fitting at its tip is inserted into a long hole of a container corner fitting provided at each of the four corners of the container, and is rotated to grip the container. Lock devices are provided at the four corners, and the telescopic frame expands and contracts according to the length of the container.
The position of the twist lock device is moved to suspend the container.

Further, a container guide called a cell guide is provided upright in the hold of the container ship. This container guide corresponds to the length of the container, for example, a 40 foot container guide for a 40 foot container and a 20 foot container guide for a 20 foot container. It is erected.

[0005]

However, two 20-foot containers are required for a 40-foot container guide.
One or only one may be loaded. When grasping a container with a spreader, it is difficult to insert the twist lock pin of the twist lock device into the corner fitting of the container because there is no guidance by the container guide, and conventionally it was handled by running the container crane slightly, Fine adjustment of the position is difficult, the adjustment is troublesome, and the cargo handling efficiency of the container is poor.

[0006] The present invention is to solve the above problems, and when holding a container with a spreader,
It is an object of the present invention to provide a container spreader side shift device capable of accurately and quickly positioning a container and improving cargo handling efficiency.

[0007]

In order to achieve the above object, the present invention relates to a container spreader side shift device for moving a container spreader for gripping a container in the longitudinal direction of the container. A side shift beam that is attached and supported movably in the longitudinal direction of the container by four roller support members, and that detachably supports the spreader by locking means provided at four corners, and between a sheave block and the side shift beam. A side shift device for a container spreader, comprising: a side shift beam moving means provided.

According to a preferred embodiment of the present invention, a damper for reducing an impact between the side shift beam and the lower surface of the sheave block is mounted on the upper surface.

According to the side shift device for a container spreader configured as described above, when a 20-foot container is accommodated in a 40-foot container guide, the corner fitting of the container and the twist lock device are aligned. Since it is possible to cope with the side shift of the spreader and the slight movement of the trolley, there is no need to move the crane for positioning, and the labor for adjustment is greatly reduced. Further, since a damper is mounted between the side shift beam and the sheave block, it is possible to absorb an impact generated when the spreader is landed on the container.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 6
1 shows an embodiment of the present invention. FIG. 1 is a side view of a side shift device of a container spreader, in which a guide flipper is rotated upward to reduce a telescopic frame, and FIG. FIG. 4 is a side view of a side shift device of a spreader for use, showing a state in which the spreader has been moved to the right side on the paper in order to adjust the deviation of the solid line, and a state in which the spreader has been moved to the left on the paper in order to adjust the deviation of the virtual line 3 is a view taken along the line AA of FIG. 1, and FIG. 4 is a view taken along the line BB of FIG.
FIG. 5 is a side view of the spreader, and FIG. 6 is a plan view of the spreader.

1 to 4, reference numeral 1 denotes a sheave block suspended from a trolley of a container crane (not shown) by a wire rope 3. Reference numeral 2 denotes a rope sheave provided at four corners of the sheave block 1. Reference numeral 4 denotes a cable basket for storing cables (not shown). Reference numeral 6 denotes four sets of roller support members attached to the lower surface of the sheave block 1, which support four sets of rollers 5, respectively. The roller 5 is partially cut away as shown in FIG.
A shaft 5c fixed inside the lower end of the roller support member 6 is fitted via a spherical roller bearing 5a and a ball bearing 5b to reduce frictional resistance.

Reference numeral 7 denotes a side shift beam, which is formed of an I-shaped steel, and is supported by a roller supporting member 6 via a roller 5 as shown in FIG. 7a is an upper flange of the side shift beam, and 7b is a web. Roller 5
Is in contact with the lower surface of the upper flange 7a. Also, two rollers 5 are provided so as to be on both sides of the web 7b. Each end of the side shift beam 7 is provided with a lock means 8 which protrudes downward and supports the spreader 10. This locking means 8 is, for example,
It has the same configuration as that of a twist lock device having a T-shaped metal fitting at the tip, which will be described later, and is manually attached and detached by an operator. In addition, this spreader is not only used for loading and unloading containers, but also when handling other loads.
This is for attaching a hook beam or the like.

Reference numeral 9 denotes a side shift beam moving means, which is shown in FIG.
As shown in FIG. 3, for example, the side shift beam 7 is configured by an electric cylinder, and moves the side shift beam 7 in the longitudinal direction of the container. The electric cylinder is pivotally connected at its base end by a pin attached to the lower surface of the sheave block 1 and at its distal end by a pin attached to the upper surface of the side shift beam 7.

The spreader 10, as shown in FIGS. 5 and 6, has a fixed frame 11 and an inner end which fits into the fixed frame 11, and which depends on the length of the container (for example, 40 feet or 20 feet). And a telescopic frame 12 that expands and contracts. The expansion and contraction of the spreader 10 is performed by a telescopic frame expansion and contraction device (for example, an electric cylinder) 15 shown in FIG. Also, this spreader 1
0, that is, at each end of the telescopic frame 12,
As shown in FIGS. 1 to 3, a twist lock pin 13b having a T-shaped metal fitting at the tip is inserted into a long hole of a container corner metal fitting 17a provided at each of four corners of the container 17 shown in FIG. A twist lock device 13 that is rotated by a hydraulic cylinder (not shown) or the like and grips the container 17 is provided. In the vicinity of each twist lock device 13, a guide flipper 14 that is rotatable upward through a rotation shaft 14a is provided. This guide flipper 1
The guide 4 rotates upward when the telescopic frame 12 is expanded and contracted, and rotates downward when the spreader 10 is landed on the container 17 so that the spreader 10 can be accurately landed on the container 17. I do.

Reference numeral 16 denotes a rubber damper disposed on the upper surface of the side shift beam 7, for example, and reference numeral 16a denotes a seat of the damper 16. This damper 16 is a spreader 1
It absorbs the shock that occurs when the 0 is landed on the container 17.

Next, the operation of the present embodiment will be described.
When a container ship (not shown) arrives at the shore, the boom of the container crane installed on the quay extends over the container ship, and the trolley (not shown) with the spreader 10 suspended is moved to above the container 17. When the 40-foot container 17 is to be unloaded, the 40-foot container 17 is accurately stacked by the 40-foot container guide erected in the hold. The container is extended to a length of 40 feet, landed on the container 17, and the container 17 is gripped and lifted by the twist lock device 13 and moved to the quay side. When unloading the 20-foot container 17, if the 20-foot container guide is correctly stacked, the telescopic frame 12 of the spreader 10 is contracted to a length of 20 feet, and the spreader 10 is placed on the container 17. Then, the container 17 is gripped and lifted by the twist lock device 13 and moved to the quay side. As described above, when the containers 17 are accurately stacked by the container guides, the unloading operation is performed by repeating these procedures as they are.

Due to the load, a 20-foot container 1
7 may be stacked two or one in a 40 foot container guide. In this case, spreader 1
0 is not guided by the container guide.
In the longitudinal direction is adjusted by moving the side shift beam 7 in the longitudinal direction of the container 17 by the electric cylinder 9, and the displacement in the width direction is adjusted by moving the trolley. The container 17 is gripped and lifted by 13 and moved to the quay side.

The present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention.

[0019]

As described above, according to the present invention, 4
When a 20-foot container is stacked on a 0-foot container guide, there is no need to move the container crane for alignment, and move the side shift beam in the longitudinal direction of the container to shift the displacement in the longitudinal direction. Since the adjustment and the width direction are adjusted by the movement of the trolley, the container can be unloaded quickly, and the cargo handling efficiency of the container crane can be improved. In addition, since the damper is mounted between the side shift beam and the sheave block, the present invention has an excellent effect of absorbing the shock generated when the spreader lands on the container.

[Brief description of the drawings]

FIG. 1 is a side view of a side shift device of a container spreader according to the present invention, showing a state where a guide flipper is rotated upward and a telescopic frame is contracted.

FIG. 2 is a side view of the side shift device of the container spreader of the present invention, showing a state in which the spreader has been moved to the right side on the paper in order to adjust the solid line deviation, and the spreader has been moved on the paper surface in order to adjust the virtual line deviation. It is a figure showing the state where it moved to the left side.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 4 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 5 is a side view of the spreader.

FIG. 6 is a plan view of a spreader.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheave block 2 Rope sheave 3 Wire rope 4 Cable basket 5 Roller 5a Spherical roller bearing 5b Ball bearing 5c Shaft 6 Roller support member 7 Side shift beam 7a Upper flange 7b Web 8 Locking means (twist lock device) 8a Corner fitting 9 Side shift beam Moving means (electric cylinder) 10 Spreader 11 Fixed frame 12 Telescopic frame 13 Twist lock device 13a T-shaped bracket 13b Twist lock pin 14 Guide flipper 14a Rotary shaft 15 Telescopic frame telescopic device (electric cylinder) 16 Damper 16a Seat 17 Container 17a Container Corner fitting

Claims (2)

[Claims] 1. A side shift device of a container spreader for moving a container spreader for gripping a container in the longitudinal direction of the container, wherein the side shift device is attached to a lower surface of a sheave block and is moved in a longitudinal direction of the container by four roller supporting members. A side shift beam that is supported so as to be able to detachably support the spreader by locking means provided at four corners, and a side shift beam moving means that is provided between the sheave block and the side shift beam. Characteristic side shifter for container spreader. 2. The side shift device for a container spreader according to claim 1, wherein a damper for reducing an impact between the side shift beam and the lower surface of the sheave block is mounted on an upper surface of the side shift beam.