JP2012116649A - Container crane for quay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container crane for a quay for a container mega-ship having a weight in a range installable in an existing quay and large in a cargo work handling amount.SOLUTION: In addition to conventionally generally-provided functions and devices, this container crane 1 for a quay is provided with a lifting type container mounting base 4 installed between two right and left legs on a sea side or similar structures and liftable along a vertical rail arranged on the two legs or side faces of the similar structures by mounting a container on its upper face; a hoisting device 5 for lifting installed on the container crane for a quay for vertically moving the cargo mounting base; and a land-side trolley 6 installed on a lower structure on the container crane for a quay for performing direct transfer of a container between the container mounting base 4 and a container chassis 7 below the crane, and transport of the container between both of them. By this new structure, the container crane for a quay which minimizes weight and increase of wheel load and is large in a container cargo work handling amount can be provided.

Description

The present invention relates to a quay container lane for transporting containers between a container ship and a quay.

Recently, the size of container ships has been increasing rapidly, and recently, super-large container ships (megaships) with a capacity of 12000 TEU to 14,000 TEU have already entered service. Corresponding to the trend toward larger container ships, it is necessary to increase the handling and handling capacity at the port, that is, the quay container crane itself and increase the handling capacity. As one of countermeasures, a method has been realized in which 20-foot containers are arranged in series and two 20-foot containers are transported in one cargo handling operation. Furthermore, from several years ago, a crane for transporting two 40-foot containers arranged in parallel as shown in FIG. 12 at the same time has been developed and has already started operation. This crane can carry four 20ft containers at the same time. With the advent of these new technologies, quay container cranes with a cargo handling capacity of about 1.5 times or more than conventional quay container cranes with one 40-foot container suspended have become a reality.

Another way to increase the cargo handling capacity of quay container cranes is to divide the route for transporting containers between the ship and the quay into multiple sections and share the transport of each section with different means of transport. Thus, a method has been proposed in which simultaneous operation in each section is possible, and as a result, the number of berth container cranes transported per unit time is increased. One method of this method has been conventionally used as a second trolley method. This method divides the container transport path into two parts with the load receiving platform at the lower leg of the crane (portal beam) as the boundary. However, in this method, since the route below the cargo cradle is short, the effect of dividing the route is small, and the effect expected in the actual machine, that is, the increase in the container handling amount cannot be realized. As another method, as shown in FIG. 13, a main trolley responsible for cargo handling and a land-side trolley responsible for chassis handling and a container horizontal transport cart responsible for horizontal transportation of containers between them are used. A quay container crane equipped. This method is a method of dividing the container transportation route into three parts. Although this system has not yet been manufactured, actual effects are expected to be able to achieve the same cargo handling capacity as the two container parallel suspension system.

However, the crane weight and the crane wheel load of the 40-foot container parallel two-hanging container crane and the container crane for a quay with a three-way transportation path described in the previous section are significantly increased compared to the conventional standard single lift container crane. There is a big problem that it cannot be installed on the existing crane quay of a general container terminal. In addition, in the case of a container crane for two quay berths with 40-foot containers in parallel, there are many cases where the container stacking state on the ship is not always arranged to be suitable for suspending two containers in parallel. Another problem is that the rate of utilization of the suspension function may drop significantly.

The problem to be solved is a light weight that can be installed on an existing quay constructed for a conventional quay container crane or a quay that is slightly reinforced while having a high cargo handling capacity that can cope with the emergence of super large container ships. It is to realize a high-capacity quay container crane.

The present invention has been devised to solve the above-described problems, and effectively divides a container sea-land transportation route in a quay container crane into three, each of which is provided with an independent conveying means. . The present invention can be applied to any crane that suspends one container and two containers in parallel, but in this description, description is basically made on the assumption that one container is suspended. Specifically, it is realized by applying the following means.

A container crane for a quay according to claim 1 of the present invention is a container crane for a quay equipped with a main trolley function for container transportation and a necessary device which are generally provided in the prior art, and further, two on the left and right on the sea side. A lifting type that is installed between the legs or similar structures and can be lifted and lowered along a vertical rail that is laid on the side of the two legs or a similar structural column in the vicinity of one container. A container podium, an elevator hoisting device for the container podium, a land-side trolley that is installed in a crane substructure and is responsible for the movement of the container between the liftable container podium and the container chassis under the crane; A quay container crane characterized by comprising: The main trolley that runs on the girder and boom of the crane is directly connected to the container handling with the cargo handling platform and the lifting container loading platform, and the lifting container loading platform above the container loading and unloading position and at any height. Dedicated to transporting containers between. Similarly, the land-side trolley is dedicated to the direct delivery of containers to and from the container chassis on the ground and the lifting container platform at the lower limit position and the transportation of containers between them. The elevating container loading platform is dedicated to transporting the container in the vertical direction between its upper position and lower limit position. Therefore, the transportation cycle time of the section requiring the most time in the above three divided routes becomes the container transportation cycle time of the main quay container crane, and the conventional quay container crane having the entire transportation route as one section is used. Compared with this, the cycle time can be greatly shortened. In addition, the quay container crane is hung by one 40ft container (or 20ft2) as well as the conventional crane, and the weight of the additional equipment is not so large. The impact is not so great, and the weight increase of the quay crane can be effectively limited. In addition, the container crane for quay equipped with the main trolley of 2 container parallel suspension, the raising / lowering container platform which can load 2 container parallel, and the said land suspension trolley of the said 1 suspension are also contained in this invention.

In the next invention, the land-side trolley provided at the lower part of the quay container crane according to the invention described above is provided with a rigid rigid suspension swing such as an integral guide frame or telescopic arm or telescopic link that regulates the swing of the suspended load. Suspension device, Suspension device small movement device that moves the suspension tool back and forth in a direction perpendicular to the sea and land direction, Suspension device small swivel device that can turn right and left around the vertical central axis, and Suspension device A quay container crane comprising a suspension tilt support mechanism that allows a small angle tilt of a tool, a ground wireless communication device, and a land side trolley remote control device. By adding these functions, it is possible to surely suppress the swinging of hanging equipment and suspended loads and to easily adjust the position of a small amount, so that the alignment work to the container chassis and the liftable container transfer crane is accurate and easy. In addition, the working time (cycle time) is greatly reduced. In addition, as described above, the operation of the land-side trolley is facilitated. As a result, remote handling on the container chassis machine side of the land-side trolley is facilitated, and automatic loading / unloading operation for the liftable container platform is facilitated. Basically, the land-side trolley is operated by the ground operator in the vicinity of the chassis, and no driver is required on the trolley. In the future, automatic cargo handling for container chassis will be possible.

In the present invention, other various quay container cranes are equipped with the land-side trolley described in the preceding paragraph. The land-side trolley described in the previous section increases the efficiency of cargo handling to the container chassis and greatly contributes to reducing driver fatigue. Therefore, if it equips with other various quay container cranes, such as a container crane for 40 feet 2 parallel suspension quay, the work efficiency of a crane can be raised further. An example of this will be explained using a 40-foot two parallel berth container crane (hereinafter referred to as a tandem crane). When handling tandem cranes, the two chassis on the land side must always stand by at the specified position in parallel and maintaining an accurate relative positional relationship. However, it is extremely difficult to repeat this alignment operation for each cycle of cargo handling, resulting in an increase in waiting time and a decrease in cargo handling efficiency. As a countermeasure against this, there is an example in which a land-side trolley for chassis handling and a temporary storage stand for two containers are installed. However, since the trolley is a normal rope suspension system, the suspension function of suspended loads is insufficient. 、 Improvement of cargo handling speed and simplification of driving operation could not be realized. Therefore, if the land-side trolley according to the present invention is installed instead of the conventional land-side trolley, high-speed transportation of each container between the temporary container stand for two containers and the chassis is possible due to the effect of the strong steady rest function. It becomes possible. As a result, with the handling of one chassis unit by the land-side trolley, the ability to sufficiently absorb the parallel transport of two main trolleys can be demonstrated. The present invention also has an effect of stably exhibiting the potential of the tandem crane as described above. Conventionally, a land-side trolley equipped with a rigid steady rest device has not been put into practical use, but it is a very effective technique for improving the efficiency of a quay container crane.

According to a further aspect of the present invention, in order to facilitate the operation of the quay container crane of claim 2, the crane is provided with an automatic operation control device that automatically operates the following operations.
1. Lifting operation and positioning stop operation of the lifting container platform.
2. Traversing, lifting and lowering and positioning stop operation between the lower limit position of the raising and lowering container platform of the land side trolley and the position above the chassis stop position.
3. Positioning stop operation at the center of the pier of the container crane main trolley for quay.
4). Direct loading and unloading operation between the land-side trolley and the liftable container platform.
5. Direct delivery of cargo between the main trolley and the liftable container platform.
Here, 3. Other than the automatic stop at the center of the sea trolley of the main trolley, each automatic operation can be realized by an automatic control device by combining the existing position detector, obstacle detector, and each motor brake and rake start / stop control. However, it is premised on the rapid damping of suspended loads. In the automatic stop of the main trolley, an electric steadying control constituted by a hanging implement shake detector and an electrical feedback steadying control by a steadying control program is also applied. Thus, the operator of the main trolley of the quay container crane can concentrate on the operation of the main trolley without being involved in the operation of the elevating container platform and the land-side trolley. In addition, the operation of the land side trolley is simple and easy to operate with a portable remote controller because there is no need to carry out the steadying operation of the suspended load, and the worker on the ground must operate next to the container chassis. Will be able to. Furthermore, in the future, by providing a television camera device for detecting the chassis position, automatic cargo handling for the container chassis will be possible.

In the container crane for a quay according to the present invention, the container transportation route between the ship and the ground is divided into three, and the cargo handling operation of each of the divided independent routes can be performed in parallel with each other. As a result, the following unprecedented effects are brought about and positioned as an extremely useful and important technology in the industry. Note that the present invention can be used for both single container suspension and two parallel container suspensions, but here, the effects of a single container suspension crane will be described.
・ Since the distance and work volume of each section of the divided transportation route averages less than half of the whole route and work before division, theoretically, it is more than twice that of the conventional quay container crane. Realization of a cargo handling capacity equivalent to or higher than that of the container crane for suspending quay with two containers in parallel can be expected.
-Since the present invention basically suspends one container, the positioning operation of the lifting tool and the suspended load is easier than that of the container crane for suspending a wharf in parallel with two containers, and the certainty of work can be obtained. This will reduce crane operator fatigue and improve work efficiency.
・ Since the quay container crane of the present invention is basically a crane that suspends one container, the number of cranes that can be lifted depends on the state of container loading on the ship, like a container crane that suspends two containers in parallel. You ca n’t get a single). Therefore, stable cargo handling capability is guaranteed.
-In invention of Claim 2, the swing of the suspended load of the land side trolley is completely controlled by the rigid body steady rest apparatus. Therefore, the container loading and lifting work on the chassis on the ground can be performed easily, safely and with the same feeling as a ground worker operating a forklift using a remote control device around the chassis. Rapid work is possible. In addition, since the crane operator is completely free from the chassis handling work, the work efficiency is improved by reducing the fatigue of the crane operator and further focusing on the ship handling work. If equipped with the automatic control device according to the invention of claim 4, the fatigue reduction of the crane operator is further enhanced.
In the quay container crane according to the present invention, since the operation of the land-side trolley is performed by a portable remote controller as described in the previous section, the operator is not required to have a crane driving license. That is, the transfer crane can be operated by a ground worker who has not obtained a crane driving license. Therefore, only one crane operator with a crane operator's license necessary for the operation of the crane of the present invention is required as in the conventional quay crane.
-The quay container crane according to the present invention is basically a single container suspension, and there are no two containers and trolleys on the boom at the same time. Therefore, compared with the container crane for two suspended containers in parallel, the increase in the weight of the crane and the increase in the weight of the crane wheel are small, and the quay where the conventional container crane is installed can be used as it is or in a reinforced quay. Can be installed. In addition to crane manufacturing costs, quay reinforcement costs or construction costs can be greatly reduced.

The present invention can be selected from either a single container suspension or a parallel two suspension, but here, a single suspension crane will be described. Further, it can be easily understood that the present invention is a highly reliable technique because it is constituted by a technique that is an extension of the prior art. Examples thereof will be described below.

An embodiment of the present invention according to claim 1 will be described below with reference to FIGS. In the quay container crane 1, in addition to the conventional general main trolley 2, a liftable container that is installed between the sea limbs 30a and 30b and moves up and down along the vertical rails 8 laid on the surfaces of the both limbs. The loading platform 4, the lifting drive hoisting device 5 for the lifting container loading platform mounted in the vicinity of the crane girder, and the land side moving along the traverse rail 15 laid on the portal beams 31 a and 31 b. And a trolley 6. In the conventional quay container crane, the main trolley 1 uses the spreader 3 suspended on the main trolley 1 to move the container between an arbitrary position on the ship and the container chassis 7 under the crane. However, in the quay container crane according to the present invention, the work range of the main trolley-2 is limited only to a section between an arbitrary position on the ship and the liftable container platform 4 between the sea limbs. The container delivery position between the main trolley 2 and the liftable container platform 4 and the container delivery position between the liftable container platform 4 and the land side trolley 6 (the lower limit position 4b of the liftable container platform 4). The vertical movement of the container between them is performed by the liftable container platform 4. Direct container transfer between the liftable container platform 4 and the land-side trolley 6 is performed at the lower limit position 4 b of the liftable container platform 4. The land-side trolley 6 uses a spreader 18 to transport the container between the position 4 b and the ground container chassis 7. On the other hand, due to the structural arrangement of the quay container crane, it is impossible to physically intersect the elevating-type container platform 4 and the land-side trolley 6. For this reason, it is not possible to directly deliver a load between the two, and it is common to install a conveyor or the like in the middle of the delivery. However, in the present invention, an extended floor (see FIG. 2) having a length that can reach the hoistway of the liftable container platform 4 is attached to the land-side trolley 6 nominal 6a, and the spreaders 18 and 18a are suspended from the floor. ing. As a result, the delivery of the load between the elevating-type container platform 4 and the land-side trolleys 6 and 6a is directly performed without an intermediate device such as the conveyer, thereby simplifying the device and simplifying and speeding up the operation. Is realized. In addition, it is possible to avoid the narrowing of the work range under the crane due to the installation of a conveyor or the like. As a matter of course, a device for preventing the land-side trolleys 6 and 6a from falling over as a result of the spreader overhang is provided in the land-side trolleys 6 and 6a. In summary, the container transportation path between the arbitrary position on the ship and the container chassis 7 under the crane, which is conventionally one continuous transportation path, is the above-mentioned three short section paths in the quay container crane according to the present invention. It is divided into. In these sections, different transporting means operate independently of each other, so that these three means can work simultaneously. As a result, the cycle time of the container is shortened, and the cargo handling capacity of the quay crane is greatly increased.

An embodiment of the invention of claim 2 will be described with reference to FIGS. On the land-side trolley 6a shown in FIGS. 9 and 10, a slave carriage 22 that can be moved in the traveling direction of the quay container crane is mounted. The container spreader 18 a is hung from the slave carriage 22 by a wire rope 19. Therefore, by moving the child carriage 22 in the front-rear direction, the spreader 18a and the container below it can be moved back and forth by a small amount in the quay container crane traveling direction. Further, a telescopic steadying pole 20 is fixed at the center of the child carriage 22, and the lower end of the telescopic steadying pole is connected to the spreader 18a via a pin. Therefore, the swing of the spreader 18a is firmly regulated by the rigidity of the telescopic steady rest pole 20. A small swivel device 21 is installed at the lower end of the telescopic swing stop pole, and the spreader 18a can be swung left and right by a small angle. Further, the land-side trolley 6a can be moved in the transverse direction of the quay container crane as a matter of course. The land-side trolley 6a having the above-described functions is a trolley that does not have the problem of swinging of the suspended load, which is a weak point of the rope suspension system, and aligns the suspended load with the chassis like a forklift or reach stacker. Can be performed easily, accurately and quickly.

One embodiment of the invention of claim 3 is equipped with land-side trolleys 6a shown in FIGS. 9 and 10 on portal beams 31a and 31b of various quay container cranes taking the quay container crane shown in FIG. 1 as an example. It is a thing.

One embodiment of the following invention is a container crane for a quay according to claim 2, wherein the raising / lowering operation and positioning stop operation of the elevating container platform 4 and the elevating container platform lower limit position 4b of the land-side trolley 6a are as follows. Crossing between the stop position of the container chassis 7, the hoisting and positioning stop operation, the positioning stop operation of the main trolley 2 of the quay container crane 1 at the center of the crane limbs 30a, 30b, and the land-side trolley 6a And an automatic operation control device for automatically operating the load delivery operation between the liftable container platform 4 and the load delivery operation between the main trolley 2 and the liftable container platform 4. That is. The upper stop position of the elevating-type container platform 4 is automatically set to a position where the position of the spreader 3 of the main trolley 2 is detected and then one container and an appropriate margin are left. The raising / lowering operation of the raising / lowering container platform 4 is automatically performed by automatically confirming that the land-side trolleys 6 and 6a have not entered the hoistway. The land-side trolleys 6 and 6a automatically enter the hoistway of the elevating container platform 4 after automatically confirming that the elevating container platform 4 is located at the lower limit position 4b. As a result, the driver of the main trolley 2 of the quay container crane 1 can concentrate on the operation of the main trolley 2 without being involved in the operation of the elevating container loading platform 4 and the land-side trolleys 6 and 6a. The operation of the land-side trolleys 6 and 6a is so simple and easy that it can be operated by a portable remote controller, so that a worker on the ground can operate beside the container chassis 7. Further, the land-side trolley 6a according to claim 2 can perform automatic cargo handling with respect to the container chassis 7 by providing a detection function of a chassis position detection TV camera device or the like.

It can be used as a quay container crane with a high cargo handling capacity for mega container ships.

Wharf container crane side view Fig. 1 arrow I-I diagram Figure II-II view of Fig. 1 (enlarged view) Front view of elevating container loading platform Detail IV diagram of Fig. 3 Fig. 3 arrow V-V view Side view of a lifting container platform Detail VI diagram of Figure 5 View III-III in Fig. 1 (Enlarged view) Front view of land side trolley Arrow VII-VII view of Fig. 7 Land side trolley side sectional view View III-III in Fig. 1 (enlarged view) Front view of land side trolley according to claim 2 Arrow VIII-VIII view of FIG. 9 Land side trolley side sectional view of claim 2 Typical cycle path of conventional quay container crane Cycle path typical example of two 40 foot parallel suspended quay container cranes Typical example of cycle path of container crane for trolley type quay wharves divided into 3 transport routes Cycle path representative example of a quay container crane according to the present invention

1. Quay container crane 2, main trolley 3, spreader 4 with main trolley, elevating and lowering container platform 4a, elevating and lowering container platform upper limit position 4b, elevating and lowering container platform lower limit position 5, elevating and lowering hoisting device for container platform 6. Land side trolley (for claim 1)
6a, land side trolley (for claim 2)
7, container chassis 8, elevating container platform guide rail 9, elevating container platform vertical guide roller
10. Elevating container loading platform horizontal guide roller
11. Elevating container platform rope sheave
12. Hoisting rope for lifting container platform
13, land side trolley running wheel
14, Land side trolley moment receiving wheel
15, land side trolley traverse rail
16. Container transfer crane moment receiving wheel rail
17, Container transfer crane hoisting device
18. Spreader with container transfer crane (for claim 1)
18a, spreader with container transfer crane (for claim 2)
19, Hoisting rope for container transfer crane
20, telescopic steady rest pole
21, spreader small turning drive
22, Land-side trolley upper cart, small moving type in the quay crane traveling direction
23, Wheels for land side trolley
24, Rail for moving the trolley on the land side trolley
25 、 Spreader connecting pin
30a, 30b Container crane seaside leg for quay
31a, 31b, quay container crane portal beam
32a, 32b, quay container crane land side leg
101, Quay container crane
102, container ship
103, onboard container
104, main trolley
105, double main trolley
106, land trolley
107, container horizontal carriage

Claims (4)

A quay container crane installed on the quay of the container terminal and carrying a container between the container ship and the quay using a spreader suspended from the main trolley. Is installed between the two similar structure columns, and the container is placed on the upper surface thereof, and moves up and down along the vertical rail provided on the side of the two legs or the adjacent structure columns and the main trolley and Elevating and lowering container loading platform that can directly exchange containers with land-side trolleys, lifting hoisting devices installed on quay container cranes to raise and lower the loading platform, and substructures on quay container cranes On the land side, the container is installed and transferred to and from the container chassis under the crane and the container chassis under the crane, and the container is transported between the two facilities. Quay container crane, characterized in that it was a Rory. The land-side trolley is composed of a steady-state suspension device for a rigid body such as an integral or telescopic arm type or telescopic link type that regulates the swing of a suspended load, and a suspension device that moves the suspension device in the traveling direction of a quay crane. A small moving device, a hanging device small swiveling device that can turn the hanging device to the left and right around the vertical central axis, a hanging device support mechanism that allows the hanging device to tilt at a small angle in the longitudinal direction, and wireless The container crane for a quay according to claim 1, wherein the container crane is a trolley including a communication device and the trolley remote operation control device. A quay container crane equipped with a land-side trolley on the substructure, the land-side trolley is an integral or telescopic arm type or telescopic link type that regulates the swing of suspended loads in addition to the usual hoisting and traversing devices A suspension device for a rigid suspension such as a suspension, a small movement device for moving the suspension in the traveling direction of the quay crane, and a suspension that can also be pivoted to the left and right around the vertical center axis by a small angle. Various quay container cranes comprising a small swivel device and a suspension support mechanism that allows the suspension to tilt at a small angle in its longitudinal direction. The container crane for a quay according to claim 2, wherein the elevating operation and positioning stop operation of the elevating-type container platform, and the land between the elevating-type container platform lower limit position and the container chassis stop position above the crane Side trolley traverse, hoisting and positioning stop operation, positioning stop operation at the center of the crane pier of the quay crane main trolley, load transfer operation between the land side trolley and the lifting container platform, The quay container crane according to claim 2, further comprising an automatic operation control device that automatically operates a main trolley and a load receiving and receiving operation between the liftable container platform.

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