JPH085142Y2 - Slab transfer device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device suitable for laterally conveying steel slabs such as continuously cast slabs (slabs, blooms).

[0002]

2. Description of the Related Art This type of transporting device is used for transporting cast slabs, etc. at a steelworks, and a slab 7 moving on a roller table 1 as shown in FIG. After being stopped at, it is pushed on the roller and skid in the direction perpendicular to the moving direction, and the skid 2 of the adjacent skid table 2 is pushed.
It is conveyed by sliding on a.

A conventional conveying device is disclosed in Japanese Patent Laid-Open No. 49-1198.
In the arrangement of the heating furnace-mill liner in which the extraction port of the heating furnace 11 for slabs is higher than the roller surface of the mill line table 12, as shown in FIG. This is an extraction device for a slab or the like, which comprises a row of rollers arranged in parallel between the extraction port and the end of the mill liner roller, and comprises a row of rollers protruding and retracting the roller surface of the mill liner table.

[0004]

However, in the apparatus for conveying the slab 7 on the roller table 1 shown in FIG. 2 by the pusher 5, the slab has a roller 1a and a skid 2.
The slab is conveyed while receiving a frictional resistance force due to its own weight. Therefore, since it is extruded against the resistance force, the width of the slab is 20 to 50 mm and the depth is 0.5 to 1.5.
3 to 5 mm scratches are generated. Furthermore, in part,
The scale remains in the slab in a fixed state. This scratch is a defect due to a scale build-up caused by seizure on the transport roller and skid, and cannot be prevented by the conventional transport facility structure. Since the scale-off in the hot rolling furnace cannot be expected especially for stainless steel, the occurrence of this flaw requires a maintenance work for removing the flaw in the billet adjusting line in the subsequent step. Therefore, there is a problem that the cost and the process are overloaded. In addition, due to excessive frictional resistance, equipment troubles such as breakage of the pusher pressing member 5a and tripping of the skid table frame 2b due to overcurrent often occur. Further, there is a problem in that the operator is physically affected by noise caused by the deviation between the cast and the roller skid during the transport of the cast.

On the other hand, in the mill line table 12 having a plurality of small-diameter rollers 10 which are moved up and down by the cylinder 16 as shown in FIG. 3, since the cylinder receives and lifts the entire weight of the entire table and the weight of the slab 19, the cylinder capacity is increased. Is large and at least four or more are required. If the cast piece is a hot piece, the bearing must have a water cooling structure. Therefore, although it is possible to prevent scratches, there is a problem that the equipment and cost are large.

The present invention has been made in view of the above circumstances and problems, and prevents scratches and scratches on the back surface of a slab, reduces the load on the pusher and the roller table / skid table frame, and reduces the cost. It is an object of the present invention to provide a transportation device having a simple structure.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a transporting device of the present invention comprises a plurality of transverse feed roller tables between the rollers of the roller table and the skids of the skid table. The traverse roller table is installed orthogonally and the base end of the skid table side of the traverse roller table is rotatably mounted. The vertical feed roller table is provided below the skid when the vertical hydraulic cylinder is lowered.

[0008]

With this construction, when the slab is conveyed laterally from the roller table to the skid table, the frictional resistance changes from the conventional sliding resistance to rolling resistance, and the load between the slab and the table has a sliding friction coefficient of 0. The rolling friction coefficient is 0.01 to 0.02 with respect to 0.3 to 0.35, which is remarkably reduced, and scratches which are a major quality defect can be significantly reduced. Furthermore, the equipment can be compact and simple in construction, and the equipment cost can be reduced. Further, when the next cast piece is carried on the roller table, the lifting cylinder is lowered to a position below the table, so that equipment trouble due to catching can be prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which a plurality of transverse feeds are provided between the roller table 1 and the skid table 2 which are adjacent to each other as shown in the drawing, that is, so as to straddle the conveying lines of these two tables. Install the roller table 3. The transportation line of the lateral feed roller table 3 is orthogonal to the transportation line of the roller table 1. The lateral feed roller table 3 has a large number of small-diameter rollers 3a arranged side by side. The base end of the table 3 on the skid table 2 side is rotatably mounted on a skid table frame 6 via a fulcrum 3b. A lifting hydraulic cylinder 4 is installed below the end of the table 3 on the other roller table side.

The roller surface of the transverse feed roller table 3 is below the upper surface of the roller table 1 and lower than the upper surface of the skid table 2 when the hydraulic cylinder 4 descends. And when transferring the slab from the roller table 1 onto the skid table 2,
The cylinder 6 is operated to incline the lateral feed roller table 3 at an appropriate angle around the fulcrum 3b, and the slab is rolled by the small diameter roller 3a and smoothly moved.

The following is an example of the actual operation of the present invention. The structure described in FIG. 1 was applied to 25 ton for hot slab conveyance.・ Side feed roller table body 8 ton weight ・ Elevating hydraulic cylinder 30 ton × 2 pieces Table 1 shows the result of comparison with the conventional transfer device. From the table, the effect of reducing the load on the pusher and the roller table frame / skid table frame by reducing the slip resistance can be clearly seen in FIGS. 1 and 2.

[0012]

[Table 1]

[0013]

As described above, the conveying device of the present invention has an effect of conveying a high quality slab for a long period of time without causing a scratch when the slab is conveyed. Furthermore, a simple and compact facility can be provided, and it is possible to provide a transportation device that is inexpensive to manufacture.

[Brief description of drawings]

1A and 1B are a plan view and a front view of an embodiment of a slab conveying device of the present invention.

2A and 2B are a plan view and a front view showing a conventional example.

3A and 3B are a plan view and a front view showing another example of the conventional example.

[Explanation of symbols]

 1 Roller table 2 Skid table 3 Side feed roller table 4 Cylinder 5 Pusher 6 Skid table frame 7 Cast slab

Continued Front Page (72) Hitoshi Sakagami, Hitoshi Sakagami, No. 1 Tobata-cho, Tobata-ku, Kitakyushu, Fukuoka New Nippon Steel Corporation Yawata Works (56) References: 60-75325 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A plurality of transverse feed roller tables are provided between the rollers of the roller table and the skid of the skid table at right angles to the roller table and the skid table, and the base end of the transverse feed roller table on the skid table side is rotated. In addition to freely mounting the shaft, an elevation hydraulic cylinder is provided on the roller table side, and the skid table side base end of the lateral feed roller table is tilted freely so that the horizontal feed roller table is below the skid when the elevation hydraulic cylinder descends. A slab conveyor device characterized by.