JPS60203317A - Method and device for transporting hot billet while keeping temperature - Google Patents

Abstract

PURPOSE:To feed a billet with less thermal loss and good efficiency to the next stage by moving a hot billet on a roller table to the inside of a heating furnace with a travelling truck on a lifting frame, feeding in order intermittently with a vertically and horizontally moving skid of the inside of the furnace and carrying out to a roller table at the outside of the furnace. CONSTITUTION:A hot billet S fed out by a roller table B from a manufacturing line or heating furnace A is received on a wire 14 travelling truck 13 positioned on a frame 3 which is vertically movable by a cylinder 8 and inclined rail 6, and delivered into a heat reserving furnace D. A mobile skid 24 which is moved back and forth by a cylinder 35 positioned on a sliding frame 25 which is movable vertically with a cylinder 31 and inclined rail 28 at the inside of the furnace receives the billet S and feeds intermittently with its vertical and horizontal motions in order on a fixed skid 23. The billet S fed out to the outside of the furnace is supplied to the succeeding stage by a roller table E. The thermal loss of the billet S is lessened and the billet S is supplied efficiently to the succeeding stage F.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and an apparatus for conveying and supplying high-temperature hot steel pieces immediately after being rolled or extracted from a heating furnace to a hot rolling line in a heat-retaining state.

In recent years, with the spread of continuous casting equipment, as an energy-saving technology, the billet production line and hot rolling line are directly connected, and the produced hot billet is directly supplied to the rolling mill while the temperature of the hot billet does not drop. The technology to do this has now been implemented. This technology assumes that the billet manufacturing equipment and hot rolling equipment are directly connected, and that the billet manufacturing capacity and rolling capacity are equally matched. However, it is very difficult to always match the capabilities of both facilities, and in many cases, to adjust the time, the hot steel billets are removed from the -H line and temporarily stored after being put on standby or cooled. A method is adopted in which the regas is supplied to the rolling line after being heated for one time. Furthermore, when the billet manufacturing line and the hot rolling line are separated, it is natural that hot billets are transferred between the two facilities.

In this way, in the conventional technology, during temporary standby, storage, or delivery, the hot steel billet at a high temperature dissipates heat, cools down significantly, and transfers the hot steel billet at a constant temperature to the hot rolling line for the next process. supply is difficult and extremely uneconomical.

The present invention advantageously solves the problems of the prior art,
A method and an apparatus for minimizing the loss of heat capacity of hot steel billets between a billet production line and a hot rolling line, and efficiently supplying hot billets to a hot rolling line by mechanical operation. The purpose is to provide the following.

In order to achieve this object, the present invention employs the following configuration. In other words, the high-temperature hot steel billet immediately after being extracted from the billet manufacturing line or heating furnace is kept in a heat-retaining device for a certain period of time during the conveyance process to the hot rolling line for the next process. A method of insulating and transporting hot-worked steel billets, characterized in that the hot-worked steel billets are transported while being kept warm so as to pass through the heat-retaining device, and the hot-worked steel billets from the heat-retaining device are promptly transported and supplied to a hot rolling line for the next process, and In order to carry out this method, a billet transfer machine and a heat-retaining transfer are connected in sequence on the billet production line or the conveyance line for the hot billets from the heating furnace to the next process hot rolling line. This device is characterized by the arrangement in which it is arranged.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and apparatus for conveying hot steel billets according to the present invention will be explained in detail below based on the embodiments shown in the drawings.

First, FIG. 1 is a plan view showing an example of the layout of a device line related to the present invention. In this equipment line, the hot steel billets produced in the billet manufacturing equipment A and A' are sequentially transferred one by one by the consecutively installed roller tables B and B', and then A steel billet transfer machine C further transfers the steel billet onto a heat-retaining transfer D which is installed in series. This hot steel billet is pitch-transferred in a heat-retaining state in a heat-retaining transfer D, transferred onto a roller table E that is successively installed according to the requirements of the hot rolling line, and then transferred to a hot rolling equipment F that is installed in a row. Promptly supplied.

Next, FIG. 2 is a plan view of an embodiment of the present invention of the steel billet transfer machine C and the heat retention transfer D in the above-mentioned equipment line.
FIG. 3 shows a vertical cross-sectional view of A, and FIG. 4 shows a vertical cross-sectional view of heat retention transfer D.

First, the roller tables B and B' have rollers 2 and 2' as constituent elements, and the end portions of the roller tables B and B' are separated from each other on the base 1 at the location of the billet transfer machine C.
It is made up of.

The billet transfer machine C has a plurality of elevating frames 3 arranged parallel to each other along the transfer direction, and the elevating frames 3 have support wheels 5 on a slide frame 4 at a lower position. Supported through... This slide frame 4 is tiltably supported on support wheels 7, Z of the base 1 via an inclined rail 6.6 provided on its lower surface.

Further, the slide frame 4 has a shaft support 10 for an end of a drive shaft 9 of a cylinder 8 fixedly mounted on the base 1, and the slide frame 4 is tilted by the movement of the cylinder 8. This tilting of the slide frame 4 causes the surfaces of each lifting frame 3 supported by the slide frame 4 to protrude or retract from the floor surface of the rollers 2 and 2'. A cart 13 is mounted on the elevating frame 3 that moves up and down in this way so that it can run.
Ends of a chain 14 stretched between wheels 11 and 12 fixed on the base 1 at positions outside the left end and outside the right end of the elevating frame 3 are respectively connected to the left and right side wall surfaces of the lift frame 3. ing. Also, the shaft on the wheel 12 is the drive device 1
5, and its drive pulls the chain 14, and the trolley 1
3 is run along its tensile direction.

In addition, each lifting frame 6... each trolley 13...
・Form a bearing surface with -, and place one hot steel piece S on this bearing surface.
is loaded.

Further, the heat retention transfer D is surrounded by a heat retention dome 20 whose upper part is lined with a heat insulating material, and an inlet 21 is formed on the left end surface of this heat retention dome 2b, and an outlet 21' is formed on the right end surface. , and its inner bottom is blocked off by a heat insulating member 22. Also, along the surface of the heat insulating member 22, a plurality of fixed skids 23 are fixedly installed on the base 1 in parallel with each other and slightly projecting from the upper part of the surface, and between the ends of each of the fixed skids 26. The ends of each of the mutually parallel elevating and lowering frames 6 extend within the space.

Furthermore, movable skids 24 are disposed along between these fixed skids 26, respectively, and these movable skids 24 are mounted on slide frames 25 at lower positions via support wheels 26. It is supported horizontally movably along its longitudinal direction. This slide frame 25
is tiltably supported on support wheels 29, 29 of the base 1 via inclined rails 2B, 28 on its lower surface. The slide frame 25 also has an end of a drive shaft 32 of a cylinder 31 fixed on the base 1 supported by a shaft 33, and the operation of the cylinder 61 causes the slide frame to move.
5 tilts. This tilting of the slide frame 25 causes the surface of each movable skid 24 supported by the slide frame 25 to
Protrude from or sink into the surface. In addition, each movable skid 24
are connected by a connecting member 60, and this connecting member 3
0 includes a drive shaft 6 of a cylinder 35 fixed on the base 1.
Six ends are supported by a shaft 37, and each movable skid 24 moves along its longitudinal direction on each support wheel 26 according to a guide 27 on the slide frame 25 by driving this cylinder 35. At this time, the roller 38 surface of the next successively installed roller table E is the same as the 23 surface of each fixed skid.
The movable skid 24 is located at a level position and is configured to extend to the upper part of the surface of the roller 38 as the movable skid 24 moves. The position of the extreme end of the movable skid 24 at this time is indicated by 24', and the state of the cylinder 35 is indicated by 65'.

Next, to explain the function (7) of the heat-retaining conveyance device having the above-mentioned structural characteristics, first, the cart 13 is placed at the roller table B or B' position, and the cylinder 8 has its drive shaft 9 extended. In this state, the slide frame 4 is at the lowest position, and therefore the trolley 13 is placed at the lowest position on the lifting frame 3. At this time, the surface of the truck 13 is
．． It is immersed in the 2' plane. When the hot steel billet S manufactured by the billet manufacturing equipment A or A' is transported by the roller table B or the girder to the position a or b on the surface of the billet transfer machine C, The slide frame 4 is pulled up by the cylinder 8 on the supporting wheels 7.7 along the inclined rail 6.6, the elevating frame 3 rises, and at the same time the trolley 15 rises and the hot steel billet S is transferred onto the trolley 13. . Next, when the trolley 13 is towed by the chain 14 to position c inside the dome 20 of the heat insulation transfer D and stopped, the slide frame 4 is pulled down by the cylinder 8 on the support wheels 7.7 along the inclined rail 6.6, and is raised and lowered. The frame 3 descends, and at the same time the trolley 13 also descends (
8) Then, the hot steel piece S placed thereon is transferred onto the surface of the fixed skid 23 placed on the way down of the truck 13. After completing the transfer of the hot steel billet S in this manner, the trolley 13 is transported back to its original position by the chain 14 and waits to receive the next hot steel billet.

The slide frame 25 is then pulled up by the cylinders 31 on the support wheels 29.29 along the inclined rails 28.28, the movable skid 24 is raised and the fixed skid 2
3, the hot steel piece S at the upper position d is transferred onto the movable skid 24. The movable skid 24 is then moved horizontally by the cylinder 35, after which the slide frame 25 is moved by the cylinder 25 onto the supporting wheels 29, 29 on the inclined rail 28.
2B, the movable skid 24 descends, and during the descent, the hot steel piece S on the movable skid 24 is transferred to position C on the fixed skid 23. Thereafter, the movable skid 24 is horizontally reversed by the cylinder 65 and returned to its original position. In the same way, the hot steel piece S is
0, the hot steel billet S is sequentially transferred to "s fs g".Furthermore, by the same procedure, the hot steel billet S is transferred to the h position above the roller table E surface, and is transferred onto the roller 38 surface and transferred to the hot rolling equipment. It is transported and supplied to F.

In this way, hot-worked steel pieces immediately after production are quickly transferred into a heat-retaining device that is provided during the transportation process to the next process, and the hot-worked steel pieces are transferred through the heat-retaining device in a fixed period of time. It is possible to maintain continuous mechanization of the conveyance process for the pieces to the next process, keep them warm, and quickly supply them to the hot rolling line as needed. In addition, the equipment configuration in which the steel billet transfer machine and the heat insulation transfer, which are installed on the conveyance line to the next process to realize this method, are connected is a mechanical system that does not cause any harm to the next process for handling hot billets at high temperatures. transport,
In addition, it is possible to quickly transfer hot steel billets to a heat insulating device, and
Maintaining the temperature at 00℃, e.g. transfer for 1 hour,
This enables storage and supply to hot rolling equipment as needed.

As described above, the present invention provides a heat-retaining conveyance method and apparatus for efficiently conveying hot steel billets to hot rolling equipment for the next process while suppressing loss of heat as much as possible.

[Brief explanation of the drawing]

Fig. 1: A plan view showing an example of the layout of a device line related to the present invention, Fig. 2: A plan view of an embodiment of the heat-retaining conveyance device according to the present invention, Fig. 3: The same Longitudinal cross-sectional view, Figure 4... The same vertical cross-sectional view. Explanation of drawing symbols A: Steel billet manufacturing equipment, C: Steel billet transfer machine, D: Heat retention transfer, F: Hot rolling equipment, 1: Base, 3: Elevating frame , 4... slide frame,
20... Heat retention dome, 22... Heat retention member, 23...
- Fixed skid, 24... Movable skid, 25... Slide frame, 28... Inclined rail, S... Hot steel piece.

Claims (3)

[Claims] (1) High-temperature hot steel billets immediately after being extracted from a steel billet production line or heating furnace.These hot steel billets are kept in a heat insulating device for a certain period of time during the transportation process to the next hot rolling line. 1. A method for insulating and transporting hot-worked steel billets, characterized in that the hot-worked steel billets are transported while being kept warm so as to pass through the heat-retention device, and the hot-worked steel billets from the heat-retention device are promptly transported and supplied to a hot rolling line for the next process. (2) On the conveyance line for hot steel billets from the steel billet production line or heating furnace to the next process hot rolling line,
A heat-retaining conveyance device for hot-worked steel billets, characterized by a configuration in which a billet transfer machine and a heat-retaining transfer are connected and arranged in sequence. (3) The heat insulation transfer is formed by a fixed bed formed by a plurality of fixed skids fixed on a base and a plurality of movable skids arranged between each of these fixed skids so as to be able to move up and down and horizontally. A transfer comprising a movable floor formed therein, and a heat-retaining dome surrounding the entire transfer in a form in which hot steel pieces can be accessed and lined with a heat-insulating material, according to claim 2. Heat-retaining conveyance device for hot-worked steel billets.