JPH0124692B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a method for transporting steel pipe products from a mill end to a large-scale steel pipe yard at a distance, storing the products at the steel pipe yard for a required period of time, and then loading them onto a ship. (Prior Art) For example, conventional work in a steel pipe yard at a steelworks requires a large number of workers and a large area due to the characteristics of steel pipes, and is also dangerous.
Particularly in large-scale steel pipe yards, a large number of workers are required to provide work instructions, yard crane drivers, and sling operators, and due to the characteristics of the work, efficiency is low, which affects transport from the mill to the quay. This also caused a decline in logistics efficiency, such as an increase in the number of trailers in operation. That is, the conventional method for transporting and storing steel pipe products will be explained below with reference to FIG. For example, three sling operators perform wire threading and sling work for each lot of steel pipes 1, and then load the steel pipes 1 onto a trailer 4 using an overhead traveling crane 3 at the mill end 2. On both sides of the loading platform of this trailer 4, support columns 5 for holding the steel pipe 1 are installed at a required interval, and the support columns 5 on both sides
In between, the steel pipes 1 for each lot are loaded, but at this time it is necessary to pull out the wire rope through which the wires have been passed, so between the loading platform and the steel pipes 1 and between the steel pipes 1 for each lot, wooden Ring wood 6 is a square timber of
is inserted and the wire is removed. After loading the steel pipes 1 onto the trailer 4, the trailer 4 transports them to a storage location, that is, a steel pipe yard 7. When loading and unloading the steel pipes 1 on the trailer 4 to the fixed racks 8 of the steel pipe yard 7, three slingers thread the wire through each lot of steel pipes 1 on the trailer 4 and transfer them to the truck crane 9 or gantry crane. Performing slinging work, loading and unloading, and
In this fixing rack 8 as well, the wire cutting operation is performed by inserting the hoops 6 between the steel pipes 1 of each lot in the same manner as described above. When shipping to a customer, the wire threading and slinging work is performed at the fixed rack 8 of the steel pipe yard 7, and the work is loaded onto the trailer 4 by the truck crane 9, and the slinging work and wire pulling work are performed on the trailer 4. Transport it to the quay after the ivy. Similarly, wire threading, slinging, unslinging, and wire removal work were carried out on the quay.
It is loaded and unloaded onto a ship 11 by a quay crane 10. (Problems to be Solved by the Invention) As explained above, in the conventional transportation and storage method, wire threading work, slinging work, unslinging work, and wire pulling work must be performed at the mill end, steel pipe yard, and quay respectively. In addition, it is necessary to insert rings for each lot, which is dangerous because the work involves handling heavy objects, and the work efficiency is low, and moreover, it requires a large space for storage in the steel pipe yard. There was a drawback. (Means for Solving the Problems) The present invention solves the above problems and improves work efficiency by eliminating the need for wire threading and wire removal after wire threading at the mill end until loading onto a ship. The purpose of the present invention is to provide a method for transporting and storing steel pipe products that can contribute to improved quality and safety, and that does not require a large space for storage in steel pipe yards. That is, as shown in FIGS. 1 and 2, the present invention has a structure in which the steel pipes 1 of each lot, through which wire threading has been carried out at the mill end 2, are stacked in a framework and are attached to the upper part. 12, a bendable synthetic fiber rope 15 is attached to a steel pipe container 14 that can be freely suspended and transported using a container carrier 13.
The steel pipe containers 14 are loaded into each lot using a container carrier, and transported to the steel pipe yard 7. In the steel pipe yard 7, the steel pipe containers 14 are stacked and stored at a predetermined position using a container carrier 13. When transporting to the quay, the container carrier 1 includes the steel pipe containers 14 stored in the steel pipe yard 7.
3. A method for transporting and storing steel pipe products, which involves transporting them to a quay using a trailer 4, and loading each lot of steel pipes 1 onto a ship 11. In such a method of the present invention, the mill end 2
For example, a trailer 4 or the like is used to transport the steel pipe container 14 loaded with a large number of steel pipes 1 from the steel pipe yard 7 and the steel pipe yard 7 to the quay.
The time required for attaching the steel pipe container 14 when it is placed on the loading platform of the trailer 4 can be shortened by forming the containers 4 so that they fit together. Here, as the steel pipe container 14, for example, as shown in FIG. An engagement alloy 12 that engages with a twist lock of a spreader 18 suspended movably up and down is fixed to the underframe 1.
Auxiliary members 19 similar to the pillar members 17 are erected on both long sides of the steel pipe container 14, and the steel pipe container 14 is formed so that it can be carried by a container carrier 13 and can be stacked. We use things. In other words, in the method of the present invention, after threading the wire through the steel pipe 1 of each lot at the mill end 2,
The wire rope remains suspended until the steel pipes 1 are loaded into the pipes and the wires are removed, and a bendable synthetic fiber rope 15 is used instead of the conventional hoop 6 as a means of separating the steel pipes 1 for each lot. The steel pipe yard 7 is characterized in that the steel pipe containers 14 can be stacked and stored using container carriers 13, thereby reducing sling work and making effective use of the steel pipe yard 7, thereby improving work efficiency. It is. In addition, in order to further improve work efficiency, the destination of the steel pipe yard 7 is determined based on order information and inventory information, the steel pipe yard 7 searches for the optimal storage location, and the steel pipe container 14 to be transported is searched. Adopting such a system is optional. (Example) Comparisons were made between the case where the method of the present invention was adopted and the case where the conventional method was adopted in terms of labor savings, efficiency in a steel pipe yard, storage efficiency in a steel pipe yard, etc.
The results are shown in the table below. As is clear from the table below, the method of the present invention achieved good results in terms of labor savings, efficiency in steel pipe yards, and storage efficiency.

[Table] (Effects of the Invention) As described above, the method of the present invention does not require wire removal work after wire threading at the mill end until it is loaded onto a ship, reducing the number of slingers and their work. can be achieved. Furthermore, the method of the present invention employs steel pipe containers and stores them in stacks using a container carrier, thereby improving the storage efficiency of the steel pipe yard. Furthermore, the method of the present invention uses flexible synthetic fiber ropes as the lot dividing member when loading each lot of steel pipes into a steel pipe container, so the steel pipes loaded into the steel pipe container can be maintained in a stable state and the work can be carried out easily. This invention has great effects such as being beneficial in terms of safety.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of the method of the present invention, and Fig. 2 is a drawing showing an embodiment of the steel pipe container used in the method of the present invention, where A is a front view, B is a plan view, C is a side view, and Fig. The figure is a schematic explanatory diagram of a conventional method. 1 is a steel pipe, 2 is a mill end, 3 is an overhead traveling crane, 4 is a trailer, 7 is a steel pipe yard, 10 is a quay crane, 11 is a ship, 12 is an interlocking metal, 1
3 is a container carrier, 14 is a steel pipe container, 1
5 is a synthetic fiber rope.

Claims (1)

[Claims] 1. Steel pipes from each lot, which have undergone wire threading work at the mill end, are placed in a steel pipe container that has a frame structure that allows them to be stacked freely, and that can be suspended and transported using a metal fitting attached to the top, using a bendable synthetic fiber rope. The steel pipe containers are loaded into each lot and transported to the steel pipe yard. At the steel pipe yard, the steel pipe containers are stacked and stored at a predetermined position using a container carrier. Also, when transported to the quay, the steel pipe containers are stored in the steel pipe yard. A method for transporting and storing steel pipe products, which comprises transporting the steel pipe containers to a quay, where each lot of steel pipes is loaded onto a ship.