KR20040024218A - Cooling water exclusion device of coupling connection driving spindle and roll chock in finishing mill - Google Patents

Abstract

PURPOSE: A cooling water blocking device of driving spindle coupling in rolling mill is provided to prevent leakage of grease that is a lubricant, extend life cycle of coupling and roll neck and prevent safety accident accordingly by effectively blocking cooling water penetrated into an assembly part of coupling and roll neck in hot rolling facility. CONSTITUTION: The cooling water blocking device comprises a cooling water blocking member comprising a fixed frame(24) which is formed of an iron sheet material and inserted into roll neck(10), and at one side of which a disk shaped flange(24a) is formed so that a double cylinder shaped connection member(24b) one side of which is opened is projectingly formed on one side of the flange, an operating flange(26) which is formed of a rubber material and correspondingly connected to the fixed frame in such a shape that the operating flange encircles the fixed frame, on one surface of which a depressed connection groove(26a) is formed, and which is assembled with the fixed frame to form a chamber (C); and a blocking plate(30) comprising a ring shaped protrusion(32) projected in a shape correspondingly to the connection groove so that the protrusion is inserted into the connection groove formed on the operating flange of the cooling water blocking member, wherein the blocking plate is fixed to the front side of a coupling(9) into which the roll neck is inserted into the coupling by inner and outer fixed plates.

Description

COOLING WATER EXCLUSION DEVICE OF COUPLING CONNECTION DRIVING SPINDLE AND ROLL CHOCK IN FINISHING MILL}

The invention drives the rolling mill to prevent the wear of the coupling and extend the life of the drive spindles by effectively blocking the cooling water that is injected for cooling the roll surface in the finishing mill during the hot rolling process and then penetrates to the drive spindle coupling side. A cooling water cutoff device of a spindle coupling.

In general, the hot rolling process is a process of uniformly heating the slab to about 1250 ~ 1350 ℃ through a furnace to make a hot coil of the thickness required by the demand through the ROUGHING MILL and FINISHING MILL.

In the hot rolling process, finishing rolling, which is a finish rolling, is a power generated in the main motor is transmitted to the work roll 2 of the rolling mill through the driving spindle 1 as shown in FIGS. 1 and 2, and the work roll 2 ) And the work roll 2 by the force applied to the choke 3 to roll the rolling material 5 while rotating together with the back-up roll 4 while maintaining a constant interval up and down.

However, since the work roll 2 is expanded and deformed as the temperature is increased by continuously rolling the rolled material 5 having a high temperature (950 to 1000 ° C.), the cooling water pipe having the spray nozzles 6 at both sides thereof for preventing the work roll 2. (7) is provided to allow the coolant to be sprayed to the outer surface of the work roll (2), the stripper on the upper side of the rolled material (5) to prevent the sprayed coolant falls to the top of the rolled material (5) (8) is arranged to be in close contact with the outer circumferential surface of the work roll (2).

However, part of the cooling water continuously sprayed and supplied during the rolling flows into the space on both sides of the stripper 8 and penetrates into the drive spindle coupling 9 located on the side thereof, thereby causing the grease injected for lubrication. (GREASE) was washed away in a short time, causing the service life is significantly shortened, such as premature wear or failure of the roll neck 10 assembled with the drive spindle coupling (9).

The present invention was created in view of the above-described problems of the prior art as described above, and installed in combination with a blocking plate on the spindle flange and the spindle coupling in the roll neck of the rolling mill to drive the spindle coupling during hot rolling. The mill operates to completely block the coolant infiltrating the oil and prevent leakage of grease injected into the coupling, preventing the wear of the roll neck and damage of the coupling. It is an object of the present invention to provide a coolant shutoff device for a spindle coupling.

1 is a partially enlarged perspective view showing a cooling process of a conventional rolling equipment,

2 is a schematic diagram of FIG.

3 is an installation state of the blocking device of the present invention,

4 and 5 is an exploded perspective view showing the appearance of the blocking device of the present invention,

6 to 8 is an operating state of the blocking device of the present invention.

Explanation of symbols on the main parts of the drawings

1 .... driven spindle 3 .... choke

9 .... Coupling 10 .... Rollneck

20..Cooling water blocking member 22..Gasket

24 .... fixed frame 24a .... flange

24b .... Connections 24c .... Aerator

26 .... operating flange 26a .... engaging groove

26b .. Fitting groove 28 .... Check valve

30..Blocking plate 32 .... Axial projection

The above object of the present invention is fitted to the roll-neck and formed on one side of the disk-shaped flange is formed, the flange is a fixed frame of the iron plate material protruding formed of a double-cylindrical connection piece is opened on one side, and the corresponding coupling form A coolant blocking member having a coupling groove recessed on one surface thereof and comprising an operating flange of a louver material forming a chamber by assembling with the fixing frame; The blocking plate is fixed to the front of the coupling in which the roll neck is inserted by the inner and outer fixing plates having an annular projection protruding in a shape corresponding to the coupling groove formed in the operating flange of the cooling water blocking member to be pressed. It is achieved by providing a cooling water blocking device of the rolling mill drive spindle coupling characterized in that it comprises a.

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

Figure 3 is a perspective view of the main part showing the installation state of the blocking device of the present invention, Figure 4 and Figure 5 is an exploded perspective view showing the appearance of the blocking device of the present invention.

According to FIG. 3, the coolant blocking member 20 is fixed to the roll neck 10 to be in close contact with the ring stop 12 serving as a sealing function with the choke 3, and correspondingly coupled to the coolant blocking member 20. The blocking plate 30 is fixed to the front end surface of the coupling 9 in which the roll neck 10 is inserted and installed to transmit power.

The coupling 9 is connected to the driving spindle 1 while the torsion is buffered by the crosskit bearing 11.

As shown in FIG. 4, the coolant blocking member 20 is provided with a fixing frame 24 which is bolted to the ring stop 12 with the gasket 22 interposed therebetween, and the fixing frame 24 is operated. The flange 26 is engaged.

The fixed frame 24 extends a predetermined width from one side of the small diameter contacting the gasket 22, and then a large diameter flange 24a is formed, and a protruding portion thereof is opened on the surface of the flange 24a. A pair of cylindrical connecting pieces 24b having different structures and different diameters protrude.

In other words, the cross section of the flange 24a and the connecting piece 24b form a 'ㅑ' shape.

In addition, a hooking jaw 24d is formed along the edge of the inner connecting piece, which is a small diameter, of the connecting piece 24b, and a vent hole 24c communicating with the space between the connecting pieces is formed in a part of the surface of the flange 24a. Is formed.

In addition, the ventilation hole 24c is provided with a check valve 28 which is a diaphragm capable of supplying air to only one side.

The operating flange 26 is preferably formed of a louver (RUBBER) material, the shape has a structure that can be elastically coupled to the fixed frame 24.

For example, the operation flange 26 has a double cylindrical structure, one side of the double cylinder is connected to each other, the other side is formed so that the inner and outer cylinders are completely separated from each other, the open side An outer circumferential surface of the inner cylinder is formed with a fitting groove 26b which is caught and fixed to the engaging jaw 24d, and a bolt hole 26c that is bolted while being in close contact with the flange 24a is formed at the edge of the open side outer cylinder. Is formed.

In particular, a coupling groove 26a concavely curved upward is formed on a surface to which the inner cylinder and the outer cylinder are connected.

Thus, when the operation flange 26 is bolted to the fixed frame 24 to form a chamber (C) as shown in FIG.

And, the air in the chamber (C) is adjusted so that it is not easily escaped by the check valve (28).

In FIG. 5, a blocking plate 30 made of louver material in close contact with the front end surface of the coupling 9 is provided, and one side surface of the blocking plate 30 has an annular annular protrusion 32 along the circumferential direction thereof. Is integrally formed.

From the outer side of the annular projection (32), that is, the outer side in the direction of increasing diameter, the ring-shaped outer fixing plate (34) is bolted together but the inner fixing plate (36) the inner fixing plate (34) Bolted together but in the same form.

The operating relationship of the present invention made of such a configuration is as follows.

Referring to FIGS. 7 and 8, when the roll neck 10 coupled to the choke 3 is inserted into the coupling 9 when the work roll is replaced, the coupling groove 26a formed in the operating flange 26 is included. As such, the annular protrusions 32 formed on the blocking plate 30 are coupled to each other.

At this time, the coupling groove 26a and the annular protrusion 32 are formed in the circumferential direction of the roll neck 10 while surrounding the roll neck 10 and have a significant adhesion force, and also when the coupling groove 26a is engaged. The sealing force is secured even when the coupling 9 flows due to the pressure inside the chamber C concentrated at the site.

In particular, since the check valve 28 is installed in the chamber (C), even more so, the penetration of the coolant is completely prevented.

That is, the cooling water flowing down toward the choke 3 side primarily tries to move on the roll neck 10, but as shown in FIG. 8, the ring stop 12 fixed to the choke 3 with the sealing S interposed therebetween. ), Because the gasket 22 interposed between the ring stop 12 and the fixing frame 20 that is bolted and the operation flange 26 installed on the rear surface of the fixing frame 20 are doubled and tripled. Cooling water does not penetrate into the coupling 9.

In addition, when the coupling 9 is separated from the roll neck 10, air is injected into the chamber C while the check valve 28 is opened by the pulling force, and the injected air is relatively instantaneous. By eliminating the state inside the chamber C, which has been vacuumed, the annular projection 32 is easily detached from the coupling groove 26a, so that the coupling 9 and the roll neck 10 are separated.

As described in detail above, the present invention can effectively block the cooling water penetrating into the assembly portion of the coupling and the roll neck in a hot rolling facility using a large amount of cooling water to prevent the outflow of grease, which is a lubricant, and the coupling and roll neck As well as prolonged service life, it is possible to prevent large accidents caused by the damage.

Claims (2)

A fixed frame 24 made of iron plate material, which is fitted to the roll neck 10 and has a disc-shaped flange 24a formed at one side thereof, and a double cylindrical connection piece 24b having one side opened at the flange 24a. Correspondingly coupled in the form of enclosing them, the coolant blocking member made of a louver-operated flange (26) forming a chamber (C) by assembling with the fixing frame 24 and the coupling groove (26a) indented on one surface thereof. 20; The inner and outer fixing plates 34 and 36 have annular protrusions 32 protruding in a shape corresponding to the coupling grooves 26a formed in the operating flanges 26 of the cooling water blocking member 20 so as to be compressed. Cooling water blocking device of the rolling mill drive spindle coupling characterized in that it comprises a blocking plate (30) fixed to the front of the coupling (9) into which the roll neck (10) is inserted. The method of claim 1, The fixed frame 24 is a part of the flange (24a) is in communication with the chamber (C), characterized in that the check valve 28 which is a one-way valve that can supply only the outside air into the chamber (C) is installed Cooling water interrupter of rolling mill drive spindle coupling.