KR100765049B1 - Cooling device of roll bearing part of feed roll table - Google Patents

Abstract

An apparatus for cooling a roll bearing portion of a charging side feed roll table is provided for heating a hot rolled material such as slab to a temperature suitable for rolling.

The roll bearing part cooling apparatus of the heating furnace charging-side conveying roll table is provided so as to surround the conveying roll bearing part of the heating feeder-side conveying roll table and the conveying roll bearing part of the rolling material, and is transferred from the rolling material or the heating furnace. And a roll bearing part cooling unit configured to prevent deterioration of the bearing part by heat generated.

According to the present invention, as well as preventing the thermal damage of the roll bearing portion of the transfer roll table for transferring the material during the charging of the material by the heat generated from the hot slab charged in the furnace, in particular the roll bearing portion An improved effect can be obtained which effectively prevents deterioration of grease supplied to the housing and bearing.

Description

Apparatus for Cooling Bearing Part of Slab Transferring Roll adjacent to Reheating Furnace}

1 is a perspective view showing a state of loading the material of the heating furnace

2 is a front configuration diagram of FIG. 1

Figure 3 is a perspective view showing a state of loading the material of the heating furnace including a cooling device of the roll bearing portion of the heating-loading-side transfer roll table according to the present invention.

4 is a front configuration diagram of FIG.

Figure 5 is a perspective view showing a roll bearing portion cooling device of the present inventors loading side loading roll table

FIG. 6 is an exploded perspective view showing a cooling device of a roll bearing part of a heating-loading-side feed roll table of the present invention of FIG.

Explanation of symbols on the main parts of the drawings

1 .... Cooling device of feed roll bearing part of feed roll table of charging furnace.

10 .... Cooling unit of roll bearing 30 .... Base block

50,70 .... First and second cooling means 52,72 .... Cooling medium passage

80 .... Heat resistant sheet 90 .... Cooling medium line

The present invention relates to a cooling device for a roll bearing part of a furnace loading side transfer roll table, and more particularly, a transfer roll for transferring a material when charging the furnace by the high heat generated from a high temperature slab charged into the furnace. The present invention relates to a cooling device for a roll bearing part of a heating furnace charging-side transfer roll table that not only prevents the roll bearing part of the table from being thermally damaged, but also effectively prevents deterioration of grease supplied to the roll bearing part housing and the bearing.

In a steel mill, a reheating furnace is a facility that heats a material to a temperature suitable for rolling before rolling a slab or the like produced through a casting process into hot rolling, which is a post-process.

For example, the rolled material such as slab is heated to an appropriate temperature in a heating furnace, and then moved to a rolling facility through a treatment process of removing scales and the like formed on the surface.

On the other hand, such a heating furnace 110 is shown in Figs. 1 and 2, and more specifically, the material charging side equipment of the heating furnace is shown.

That is, in Figures 1 and 2 shows a charging operation for charging the rolling material such as slab 100 into the heating furnace 110, the heating furnace 110 in accordance with the rolling order slab (slab) (rolling material) A pair of charging pushers 120 are installed on the furnace charging side, which is installed toward the furnace door 112.

In this case, the charging pusher 120 is composed of a rack arm 124, the pinion drive gear 126 engaged with the push arm 120 and the pusher arm 122 connected to the front end of the rack arm 124.

Therefore, the shaft is rotatably installed on the conveying roll table 130, that is, the roll bearing part 134, which is disposed on the furnace charging side, and the slab (via the unloading) is connected to the slab ( When the rolled material such as 100 is transferred and positioned adjacent to the door 112 of the heating furnace 110, the pusher arm 122 of the pusher 120 moves forward to push two rows of materials into the heating furnace sequentially. will be.

For example, the slab 110 having a surface temperature of 200 to 800 ° C. moves along the feed rolls 132 of the feed roll table 130, and then the door 112 of the heating furnace 110 rises to the charging slot. When is opened, the pusher arm 122 of the charging pusher 120 is advanced by the drive of the pinion drive gear to charge the slab in the furnace.

Subsequently, the rolled material such as the charged slab 100 passes through the heating furnace in sequence as the movement of the moving beam in the heating furnace passes through the charging zone, the preheating zone, the heating zone, the cracking zone, etc., at an appropriate temperature for rolling. It is heated.

Meanwhile, several feed rolls 132 of the feed roll table 130 are arranged at regular intervals, and the feed rolls 132 are formed on both side roll bearing portions 134 disposed on a table frame, not shown in the drawing. It is operated when the motor (unsigned) that the shaft is assembled and connected is operated to transfer the material to the furnace charging side.

At this time, the roll bearing portion 134 is specifically composed of a housing and a bearing (138).

As shown in FIG. 2, the grease supply pipe 136 is connected to the bearing 138 in the housing such that grease is supplied for smooth operation thereof.

In addition, at least one of the roll bearing parts 134 of the transfer roll table, the slab 100 is inserted into the bearing housing of the roll bearing part 134 adjacent to the furnace door 112 side by the pusher arm 122. There is no separate member, such as a cover for protecting the roll bearing part from heat generated from the device.

Therefore, as shown in Figure 2, in the case of the roll bearing portion 134 of the conventional transfer roll table is not a structure that blocks the high heat transmitted when opening the door of the hot slab 100 or the heating furnace, There was a problem that heat was transferred to the roll bearing portion.

As a result, the heat continuously applied to the roll bearing portion 134 is highly likely to cause thermal deformation of the bearing housing of the roll bearing portion 134 or the bearing 138.

In particular, as shown in FIG. 2, the grease supplied through the grease tube 136 supplied to the bearing 138 is easily deteriorated 136a.

Therefore, deterioration of grease generated in the roll bearing portion of the heating furnace charging-side transfer roll table does not smoothly operate the bearing while changing the physical and chemical properties of the grease itself.

In addition, the deteriorated grease is easily leaked to the outside through the housing of the roll bearing portion 134 while being less viscous, and thus the degraded deteriorated grease 136a significantly lowers the service life of the equipment, and the environment around the equipment. Several problems have arisen, such as being provided as a source of contamination.

The present invention has been made in order to improve the various problems as described above, the object is that the roll bearing portion of the transfer roll table for transporting the material when the furnace is loaded by the high heat generated in the furnace charging slab heat damage It is to provide a cooling device for the roll bearing part of the loading-side transfer roll table, in particular, to prevent the deterioration of the grease supplied to the roll bearing part housing and the bearing.

Technical aspect of the present invention for achieving the above object, the feed roll bearing portion of the feed-loading side feed roll table of the heating of the rolled material; And,

A roll bearing part cooling unit provided to surround the feed roll bearing part and configured to prevent deterioration of the bearing part by heat transferred from a rolled material or a heating furnace;

It provides a roll bearing portion cooling device of the charging side loading roll table of the heating furnace configured to include.

Preferably, both sides of the roll bearing portion is provided with a base block for installation of the cooling unit bearing the roll bearing.

More preferably, the roll bearing portion cooling unit is provided with a first cooling means provided on the base block so as to surround the upper portion of the roll bearing portion, and is provided behind the base block so as to surround a rear surface of the roll bearing portion. It may be configured to include a second cooling means.

In this case, the first and second cooling means of the roll shaft cooling unit may be provided as a cooling plate integrally provided therein, and provided as cooling plates respectively coupled to the base block.

Preferably, the first and second cooling means are arranged in association with a cooling medium line consisting of a cooling medium supply and discharge pipe installed on the heating furnace side of the heating furnace charging side transfer table.

The cooling medium supplied to the first and second cooling means may be one of a cooling water and a cooling gas.

Finally, the first and second cooling means further comprises a heat-resistant sheet disposed in the connecting portion in the bearing portion of the roll shaft is not disposed.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a state of loading the raw material of the heating furnace including a cooling device of the roll bearing portion of the heating furnace charging-side transfer roll table according to the present invention, Figure 4 is a front configuration of Figure 3, Figure 5 It is a perspective view which shows the roll bearing part cooling apparatus of the heating furnace charging side feed roll table, and FIG. 6 is an exploded perspective view which shows the roll bearing part cooling apparatus of the heating furnace charging side feed roll table of this invention.

However, the equipment reference numbers of the heating furnace, the transfer roll table, and the pusher mentioned in the prior art refer to the same reference numerals as in the prior art (Figs.

First, in FIG. 3 and FIG. 4, the installation example and the whole structure of the roll cutting part cooling apparatus 1 of the heating furnace loading side transfer roll table of this invention are shown.

That is, as shown in Figs. 3 and 4, the roll bearing portion cooling device 1 of the heating furnace charging-side transfer roll table of the present invention as described above is largely heated in which the rolled material, for example, the slab 100 is loaded. Rolling material or heating furnace 110, which is provided to surround the roll bearing portion 134 of the transfer roll table 130 and the transfer roll bearing portion 134 disposed on the charging side of the furnace 110, and the slab 100. It is characterized in that it comprises a roll bearing portion cooling unit 10 configured to prevent deterioration of the roll bearing portion by the heat transmitted from the).

That is, the cooling device of the present invention, the shaft portion of the transfer roll 132 is assembled and rotated in the transfer roll table 130 for transferring the rolled material, such as the slab 100 in a high temperature state as shown in Figs. The roll bearing part cooling device 1 of the present invention solves the problem that the driven feed roll bearing part 134 is damaged by heat and in particular, deterioration of grease supplied therein occurs.

On the other hand, the roll bearing part cooling apparatus 1 of the heating furnace loading side transfer roll table of this invention is shown in more detail in FIG. 5 and FIG.

First, as shown in FIG. 5 and FIG. 6, the base block 30 for installing the roll bearing part cooling unit 10 is provided at both sides of the roll bearing part 134.

The base block 30 is fixed to both sides of the bearing housing (unsigned) in which the bearing of the roll bearing part 134 is embedded, and is directly assembled to the roll bearing part when the roll bearing part cooling unit 10 is installed. It is also difficult to do this, and to avoid such a complicated assembly structure, and to facilitate the assembly and disassembly of the roll bearing unit cooling unit.

Next, looking specifically at the roll bearing portion cooling unit 10 to enable substantial cooling in the apparatus of the present invention, as shown in Figures 5 and 6, to surround the upper portion of the roll bearing portion 134 The first cooling means 50 is provided in close contact with the base block 30, and the second cooling means 70 provided behind the base block so as to surround the rear surface of the roll bearing portion 134. .

Therefore, as shown in FIG. 3, the roll bearing part cooling apparatus 1 of the present invention is disposed intensively in the heating furnace door-side feed roll bearing part through which heat is transferred when the door of the heating furnace 110 is opened. Preferably, it is desirable to arrange the cooling device in front of the furnace door opening.

In addition, the first cooling means 30 serves to block heat transferred from the slab 110 passing through the slab 110 when the furnace is charged in the transfer roll at the upper portion of the bearing.

The second cooling means 70 surrounds the rear of the roll bearing portion 134 so that the heat transferred therein does not affect the rear of the roll bearing portion when the furnace door 112 is opened. It is arranged.

Therefore, as shown in Figure 6, substantially the roll bearing portion cooling apparatus of the present invention, the base block 30 is in close contact with both sides of the roll bearing portion, the upper and rear surfaces of the first and second cooling means 50 ( Since 70) is provided in a completely enclosed form, it effectively blocks heat from being transferred to the roll bearing part.

As a result, as shown in FIGS. 2 and 4, thermal deformation of components such as the bearing 138 and the housing of the roll bearing portion 134 and the housing is blocked, and deterioration of grease supplied through the grease supply pipe 136 is prevented. External leakage caused by this is effectively prevented.

5 and 6, the first and second cooling means 50 and 70 of the roll bearing part cooling unit 10 may include a cooling medium passage through which cooling medium is introduced and circulated and discharged. 52, 72.

In addition, the first and second cooling means 50 and 70 of the roll bearing part cooling unit are processed with cooling medium passages 52 and 72 therein, and are in close contact with the roll bearing part 134 and the base block 30. It is provided substantially as a cooling plate to be joined.

That is, the first cooling means 50, as shown in Figure 6, in consideration of the size of the base block 30 and the roll bearing part housing, the center portion is convexly protruded, the cooling medium passage 52 in this portion Is a bending plate formed.

At this time, the cooling medium passage 52 of the first cooling means 50 of the bending plate is processed through the passages, the end of the passage is sealed to realize the U-shaped circulation passage with the packing 52a, The connecting nipple 54 is connected to one side and the other passage, and the cooling medium supply hose and the discharge hose 56 are connected to the nipple, respectively.

The cooling medium circulation passages 72 are similarly processed in the plate of the second cooling means 70, and the through passage portion is sealed with the packing 72a, and the connecting nipple 74 and the hose 76 are disposed at one side and the other side. Are connected.

3 and 5, the media inlets and outlets of the cooling medium passages 52 and 72 of the first and second cooling means 50 and 70 of the roll bearing part cooling unit 10 are shown. The side hoses are connected to the cooling medium line 90 of the cooling medium supply and discharge pipes 92 and 94 respectively installed on the heating furnace side of the transfer table 130.

Each of the supply and discharge hoses is provided with valves 92a and 94a linked thereto as shown in FIG. 5.

Meanwhile, the cooling medium supplied to the first and second cooling means 50 and 70 may be one of cooling water, a cooling gas, that is, a cooling gas such as cooling gas or air.

Therefore, in the case where the cooling medium is a conventionally used cooling water, the cooling water is supplied to the hoses 56 and 76 of the first and second cooling means 50 and 70 through the supply pipe 92, and the cooling water is supplied to each plate. The continuous circulation is discharged through the inner passage (52) (72) is discharged through the discharge pipe (94).

As a result, the roll bearing portion 134 of the transfer roll table is the heat transfer is blocked as the first and second cooling means whose upper and rear sides are the most easily transmitted heat plates.

At this time, as shown in Figure 6, the cooling plates of each of the first and second cooling means are assembled with fastening means such as bolts, respectively, on the upper and rear surfaces of the base block 30, that is, the maintenance of the roll bearing part itself Can be disassembled easily.

And, although not shown in detail in the drawings, it is preferable that the base block is also in close contact with both sides of the housing of the roll bearing portion, and is fixed to a table frame supporting the roll bearing portion without being directly bolted.

Next, as shown in Figure 6, the roll shaft connecting portion of the roll bearing portion 134, that is, the heat-resistant sheet 80 formed with a thin shaft passage opening 82 in front of the roll bearing portion is provided in the base block 30 It is also preferable to be fastened and fixed.

In this case, the heat resistant sheet further prevents heat from being transferred to the roll bearing part through a portion in which the first and second cooling means and the base block are not disposed.

As a result, the roll bearing portion 134 of the furnace-loaded transfer roll table of the present invention is completely surrounded by the cooling unit, the base block, and the heat-resistant sheet, which are the first and second cooling means, to completely block thermal damage or deterioration of grease. Will be.

Thus, according to the roll bearing part cooling apparatus of the heating furnace loading side conveyance roll table of this invention, the roll of the conveying roll table which conveys a material for charging of the heating furnace by the high heat which generate | occur | produces in the high temperature slab charged into a heating furnace. It provides an excellent effect to effectively prevent the damage to the heat bearing portion to prevent material transfer failure due to thermal deformation of the roll bearing portion.

In particular, the apparatus of the present invention is to provide another excellent effect of effectively preventing the deterioration of grease supplied to the housing and the bearing of the roll bearing portion directly affecting the roll drive of the feed roll table.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (7)

A feed roll bearing part 134 of a charging side feed roll table 130 by heating a rolled material; And, A roll bearing part cooling unit (10) provided to surround the feed roll bearing part (134) and configured to prevent deterioration of the bearing part by heat transferred from a rolled material or a heating furnace; Cooling device for the roll bearing portion of the feed-loading side feed roll table configured to include a. 2. The cooling of the roll bearing part of the heating furnace charging-side transfer roll table according to claim 1, wherein base rolls 30 are installed at both sides of the roll bearing part 134 to install the roll bearing part cooling unit. Device. The method of claim 2, wherein the roll bearing unit cooling unit, First cooling means (50) provided on the base block to surround an upper portion of the roll bearing portion (134); And, Second cooling means (70) provided at the rear of the base block to surround the rear surface of the roll bearing portion (134); The roll bearing part cooling apparatus of the heating furnace charging-side feed roll table characterized in that it comprises a. According to claim 3, wherein the first and second cooling means (50, 70) of the cooling unit of the roll bearing portion is provided with a cooling medium passage 52, 72 therein integrally, the base block (30) Cooling device for the roll shaft portion of the heating furnace charging-side transfer roll table, characterized in that each consisting of cooling plates coupled. 5. The method of claim 4, wherein the first and second cooling means are arranged in association with a cooling medium line (90) consisting of cooling medium supply and discharge pipes (92) (94) installed on the heating side of the furnace charging side transfer table. The roll bearing part cooling apparatus of the heating furnace loading side feed roll table characterized by the above-mentioned. The cooling device of a roll bearing part of a furnace charging side transfer roll table according to claim 5, wherein the cooling medium supplied to the first and second cooling means is one of cooling water and cooling gas. 4. The roll bearing part of the heating furnace charging-side feed roll table according to claim 3, further comprising a heat-resistant sheet 80 disposed at the bearing part connecting part of the roll shaft on which the first and second cooling means are not disposed. Chiller.

Images