JP5270210B2 - Container crane suspension - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hanging implement for a container crane simultaneously gripping two containers in parallel and preventing the mutual contact of the containers caused by the inclination of the containers. <P>SOLUTION: Two head blocks 1A, 1B connected in parallel by a plurality of universal joints 4 are provided, and universal joints 5 are further arranged above the plurality of universal joints 4. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a container crane hanger, and more particularly to a container crane hanger capable of simultaneously handling two containers arranged in parallel.

  In recent years, transportation using containers has been actively carried out for the rationalization of physical distribution, and in container yards provided at wharves etc., container transport and transshipment operations using large container cranes are frequent. Has been done. In order to improve the transport efficiency of this container, the container ship has been increasing in size year by year, and accordingly, further work efficiency has been required in the container yard. As one of measures for improving the efficiency, it has been proposed to handle two containers simultaneously with a container crane.

  For example, as shown in FIG. 8, Patent Document 1 discloses a crane crane for a container having two head blocks 1A and 1B connected in parallel through two universal joints 4 attached in the longitudinal direction. Has proposed. By using such head blocks 1A, 1B, it becomes possible to handle two containers simultaneously via a spreader 10 (see FIG. 9) attached to the lower part of the head blocks 1A, 1B. Further, by moving each universal joint 4 up and down and left and right by a plurality of electric cylinders 8, the relative positional relationship between the two head blocks 1A and 1B can be freely adjusted according to the loading state of the container 11. The operability of the cargo handling work of the container 11 can be improved.

However, in the above-described hanging tool of Patent Document 1, as shown in FIG. 9, when the container 11 tilts to the outside of the hanging tool due to the uneven distribution of the container 11 held by the hanging tool, Since the head block 1 </ b> A is also tilted around the connection portion of the universal joint 4, the containers 11 may be in contact with each other and damaged. As a countermeasure, the inclination of the head block 1A is corrected by adjusting the length of the wire 3 that the driver of the container crane pays out from the trolley, which is a complicated and time-consuming operation. For this reason, there is a problem that the cargo handling efficiency of the container 11 is lowered.
US Patent Application Publication No. 2006/0243724

  An object of the present invention is to provide a container crane suspension that can handle two containers arranged in parallel at the same time and can prevent the containers from contacting each other due to the inclination of the container.

The container crane suspension of the present invention that achieves the above object is suspended by a trolley that can be moved along the girder of the container crane so as to be able to be wound and unwound, respectively, and is arranged in the longitudinal direction. In the crane crane suspension having two head blocks (1A, 1B) connected via the universal joint (4), the universal joint (4) is placed on the plurality of universal joints (4). And a universal joint (5) for connecting the two head blocks (1A, 1B).

The universal joints (4, 5) are ball socket type universal joints comprising a ball stud part (6) having a spherical part at the tip and a housing part (7) having a spherical seat to which the spherical part is fitted. Is desirable. Further, it is desirable that either the ball stud portion (6) or the housing portion (7) has a telescopic cylinder structure and the spherical seat detachably holds the spherical portion.

The number of universal joints (4, 5) should be four.

  The hanging tool for a container crane of the present invention is preferably used for a portal crane or a container crane.

  According to the container crane suspension of the present invention, the container crane is suspended so that it can be wound up and down on the trolley that can move along the girder of the container crane, and along the longitudinal direction via a plurality of universal joints. Since the universal joint is further disposed above the plurality of universal joints in the container crane suspension having two head blocks connected in parallel, the two containers arranged in parallel are arranged. When the container that can be handled at the same time and the container gripped by the hanging tool is tilted, the head block can be prevented from tilting by the pulling force of the universal joint placed above. Can be prevented.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same part as a prior art.

  1 and 2 show an example of a head block in a hanging tool for a container crane according to an embodiment of the present invention.

  The head blocks 1A and 1B in the container crane hanger are individually wound up from a trolley (not shown) through wires 3 wound around a plurality of pulleys 2 installed at longitudinal ends. As shown in FIG. 3, the spreader 10 having a twist lock for holding the container 11 is attached to the lower part thereof.

The two head blocks 1A and 1B are connected via two universal joints 4 arranged in the longitudinal direction, and further, a universal joint 5 is arranged above the two universal joints 4, respectively. ing. Each of these four universal joints 4 and 5 has a ball socket type composed of a ball stud portion 6 having a sphere portion at the tip portion and a housing portion 7 having a spherical seat fitted to the sphere portion at the tip portion. A universal joint is used. The ball stud portion 6 and the housing portion 7 can be moved up and down and left and right independently of each other by an electric cylinder 8 attached to the head block 1B. The relative positional relationship between the head blocks 1A and 1B can be adjusted appropriately.

As described above, the container crane suspension includes the two head blocks 1A and 1B connected in parallel via the plurality of universal joints 4, and thus handles the two containers 11 arranged in parallel at the same time. be able to. Furthermore, since the universal joints 5 are further arranged above the universal joints 4 connecting the two head blocks 1A and 1B, the contents stored in the container 11 held by the hanging tool are unevenly distributed. Even when the container 11 tries to incline to the outside of the hanging tool due to the above, as shown in FIG. 3, the head block 1A is prevented from inclining to the outside by the tensile force F applied to the universal joint 5 arranged above. Therefore, contact due to the inclination of the container 11 can be prevented.

  It is desirable that the ball stud portion 6 of the universal joints 4 and 5 has a structure in which a spherical seat is provided at the tip of the extendable cylinder 9. In this way, as shown in FIG. 4, since the interval between the two head blocks 1A, 1B can be freely changed, the range corresponding to the loading state of the container 11 is expanded. The cargo handling efficiency and operability can be improved. The cylinder 9 may be used for the housing part 7.

  Furthermore, it is desirable to make the spherical seat of the housing part 7 openable and closable by the electric cylinder 12 so as to detachably hold the sphere of the ball stud part 6. By doing so, as shown in FIG. 5, since the two head blocks 1A and 1B can be separated from each other, the container 11 is efficiently handled even when the number of the containers 11 is one. be able to.

  The number of the universal joints 4 and 5 is not particularly limited, but the total number is preferably four from the viewpoint of reducing the weight of the hanging tool and simplifying the operation.

  The crane crane suspension of the present invention is a portal crane (see FIG. 6) such as a transtainer (registered trademark of Paseco) for transshipping the container 11 in the container yard, or the container ship 14 and the land It is preferably used for a container crane (see FIG. 7) such as a porttainer (registered trademark of Paseco Co., Ltd.) that transfers the container 11 to and from the chassis 15.

  In any of the above embodiments, a hydraulic cylinder or a pneumatic cylinder can be used instead of the electric cylinders 8 and 12.

It is a perspective view which shows the example of the head block in the hanging tool of the container crane which consists of embodiment of this invention. FIG. 2 is a top view of the head block shown in FIG. 1. FIG. 2 is a side view of the head block shown in FIG. 1. FIG. 2 is a top view of the head block shown in FIG. 1, showing a case where an interval between the head blocks is changed. It is a top view of the head block shown in FIG. 1, Comprising: The case where head blocks are cut | disconnected is shown. It is a front view of the portal crane using the hanging tool of the container crane of the present invention. It is a side view of the container crane using the hanging tool of the container crane of this invention. It is a perspective view which shows the head block in the hanging tool of the conventional container crane. It is a front view explaining a movement when a container inclines in the hanging tool which has a head block shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A, 1B Head block 2 Pulley 3 Wire 4 Universal joint 5 Universal joint (arranged upward) 6 Ball stud part 7 Housing part 8 Electric cylinder 9 (for movement) Cylinder 10 (in the housing part) Spreader 11 Container 12 (Grip) Electric cylinder 13 for wharf 14 Container ship 15 Chassis

Claims (6)

Two head blocks suspended from a trolley movable along a girder of a container crane so as to be able to be wound up and lowered respectively, and connected via a plurality of universal joints (4) arranged in the longitudinal direction (1A, 1B)
Containers each having a universal joint (5) connected to the two head blocks (1A, 1B) on the plurality of universal joints (4) and having the same structure as the universal joint (4). Crane lifting equipment.   The universal joint (4, 5) is a ball socket type universal joint comprising a ball stud part (6) having a spherical part at the tip and a housing part (7) having a spherical seat to which the spherical part is fitted. The hanging tool for a container crane according to claim 1, which is a joint.   The hanging tool for a container crane according to claim 2, wherein either one of the ball stud part (6) and the housing part (7) has a telescopic cylinder structure.   The hanging tool for a container crane according to claim 2 or 3, wherein the spherical seat detachably holds the spherical portion.   The hanging device for a container crane according to any one of claims 1 to 4, wherein the number of the universal joints (4, 5) is four.   The said container crane is a portal crane or a container crane, The hanging tool of the container crane in any one of Claims 1-5.