CN102728628A - Vertical rolling mill inlet sharing induction device - Google Patents

Abstract

The invention provides a common induction device for the entrance of a vertical rolling mill, which is composed of a fixed bracket, a guide body, an upper support arm, a lower support arm, a guide roller, a mechanism for adjusting the opening of the guide roller, and a horizontal movement mechanism for the guide body. The steel billet runs in the space formed by the upper and lower support arms and side baffles, and guides the billet to bite into the rolling mill correctly through guide rollers and side baffles. When changing rolling specifications, turn the adjustment handle, and the upper support arm drives the upper guide roller to lift up to meet the requirements of the new specification. The support arm extends between the two rolls on the inner frame. When changing the roll, the guide plate moves backward, and the support arm together with the guide roll exits the roll and the archway of the inner frame. Therefore, it is not necessary to replace the guide device for roll change, which can significantly shorten the roll change time. Time, improve the operating rate of the rolling mill, and greatly extend the service life of the guide device, reduce the reserve and consumption of spare parts, and reduce production costs. At the same time, scratch defects on the surface of the rolled piece can be avoided, and the physical quality of the rolled product can be improved.

Description

A common induction device at the entrance of a vertical rolling mill

technical field

The invention belongs to the field of steel rolling machinery and equipment, and in particular relates to a common induction device for fixing the entrance of the vertical rolling mill entrance of the front stand of the finished square and round steel products of the continuous rolling mill of the rolling line.

Background technique

The steel rolling line of the fixed rolling line continuous rolling mill is fixed. During the rolling process, it mainly relies on the left and right movement of the horizontal rolling mill frame and the up and down movement of the vertical rolling mill frame to make the passes of each frame of the same variety Align the rolling line to realize rolling of different varieties. When the continuous rolling mill produces square and round steel, the shape of the finished front stand is: the square steel is rectangular, and the round steel is elliptical. And the shape of the finished product and the front stand is all square for the continuous rolling unit with fewer rolling stands. The so-called induction device refers to the device that guides the rolled piece to enter and exit the roll pass correctly. The front frame of the Fangyuan steel product is a vertical rolling mill, and its entrance induction device is composed of a conjoined guide plate and guard plate, commonly known as "guide guard device". The one-piece guide device is installed on the frame as a whole, and each roll pass has a matching guide cavity corresponding to it. When changing the rolling specification, the guide device moves together with the rolls, and there is no need to adjust the guide device separately. The guide has the following problems:

1. The friction between the rolled piece and the guide device is sliding friction, and the sliding friction between the hot rolled piece and the cold guide can easily cause scratches on the surface of the rolled piece, which directly affects the surface of the finished product quality.

2. The guide device has no commonality. The guide cavity of the roll pass cannot be adjusted or is difficult to adjust. When changing the rolling type or roll system, the guide and guard device must be replaced together, which not only increases the spare parts reserve and capital occupation of the guide and guard device; but also shortens the guide device. The service life of the machine increases the production cost; at the same time, the replacement time is prolonged, which seriously affects the operation rate of the equipment and the production capacity of the rolling line.

In order to eliminate the above defects, experts from various fields have been organized for many times to discuss and tackle key problems. However, due to the limitation of the space position (the height of this area is only 1130 mm, and the width is only 610 mm), the strength of the components cannot be guaranteed, and it is difficult to correctly place the rolled parts. Therefore, this problem has not been effectively solved.

Contents of the invention

The purpose of the present invention is to provide a reasonable structural design, small footprint, sensitive and reliable action, which can reduce the friction between the rolling piece and the guide, realize the common use of rolling pieces of various specifications, avoid scratches on the surface of the rolling piece, and improve Product physical quality, prolonging the service life of the guide device, reducing production costs, shortening the roll changing time, and improving the equipment operating rate of the vertical rolling mill entrance shared induction device.

For this reason, the solution that the present invention takes is:

A common induction device for the entrance of a vertical rolling mill, including a fixed bracket, a guide body, an upper support arm, a lower support arm, a guide roller, a mechanism for adjusting the opening of the guide roller, and a horizontal movement mechanism for the guide body;

The fixed bracket is composed of a frame body and an ear plate. There is a limit baffle on one side of the frame body, and a chute is processed in the middle of the upper surface. Two inverted "L"-shaped pressure plates are fixed on the frame body with bolts. The "L" shaped pressure plate and the upper surface of the frame body form two card slots, and the fixed bracket is fixed on the column of the archway of the outer frame of the vertical rolling mill through the ear plates at both ends of the frame body;

The guide body is a four-column structure with a closed bottom. The bottom plate of the guide body is provided with a limit boss and a travel nut limit opening tile seat. The limit boss is inserted into the frame body card slot, and the travel nut limit The open tile seat is movably installed in the chute of the fixed bracket;

The horizontal movement mechanism is composed of a translation screw and a nut. The outer end of the translation screw has a translation handle, and the inner end is fixed on the bearing seat of the screw. The guide body travels in the limit opening tile seat of the nut;

The opening degree adjustment mechanism of the guide roller is composed of a worm gear, a worm, a shaft coupling and an adjustment screw. A set of worm gear and worm mechanisms are arranged on both sides of the coupling. One end of the worm is connected to the coupling, and the other end has an adjustment handle. The worm gear There is a square hole in the middle, the upper end of the adjustment screw is connected to the square hole of the worm wheel, and the lower end is connected to the fixed tile seat of the adjustment screw of the guide column;

The front end of the upper support arm and the lower support arm is equipped with a guard plate, and the two sides of the rear end are provided with side baffles. The bearing seat of the guide roller is connected with the adjusting nut mounting tile seat of the adjusting screw rod, and the rear part of the lower support arm is fixed on the lower bottom surface of the guide body by the lower support arm fixing bolt.

The upper surface of the lower guide roller is at the same height as the lower working surface of the chute between rolling mills.

Working process of the present invention and beneficial effect are:

The induction device of the invention can make the steel billet run in the space formed by the upper and lower support arms and the baffles on both sides of the support arm, and guide the steel billet to correctly bite into the vertical rolling mill through the position limiting function of the guide roller and the side baffles. The chute on the fixed bracket positions the guide plate body horizontally and vertically. The horizontal direction is based on the alignment of the vertical centerline of the guide roller with the rolling line. Flush is standard. When the rolling specification is changed, the lower support arm is fixed, and the opening adjustment handle is manually turned, and the upper support arm is lifted under the drive of the adjustment screw, and the upper guide roller is lifted to meet the requirements of the new specification, so there is no need to replace the guide guard device, the new specifications can be rolled. Since the position of the guide plate body can be adjusted along the direction of the rolling line, the upper and lower support arms with guide rollers on the guide plate body extend into the space between the two rolls installed on the inner frame during steel rolling, and the guide plate body moves backward when changing rolls. The support arm and the guide roll exit the roll and the archway of the inner frame, without hindering the horizontal movement of the inner frame at all, so the roll change does not need to replace the guide device, which can significantly shorten the roll change time, improve the operating rate of the rolling mill and the equipment of the entire rolling line production capacity, and greatly prolong the service life of the guide device, reduce spare parts reserves and expenses, and reduce production costs. At the same time, due to the structure of the support arm and double guide rollers, and the guard plate between the rolls and the guide rollers, it can ensure that the rolled piece can bite into the pass smoothly, reduce the sliding friction between the rolled piece and the guide guard, and avoid the surface of the rolled piece. scratch defects, correspondingly improve the physical quality of rolled products.

Description of drawings

Figure 1 is the front view of the common induction device at the entrance of the vertical rolling mill.

Fig. 2 is the left view of the common induction device at the entrance of the vertical rolling mill.

Fig. 3 is a top view of the common induction device at the entrance of the vertical rolling mill.

Figure 4 is a front view of the fixing bracket.

Figure 5 is a top view of the fixing bracket.

Figure 6 is a front view of the guide body.

Figure 7 is a left view of the guide body.

Figure 8 is a top view of the guide body.

Figure 9 is a front view of the support arm.

Figure 10 is a top view of the bracket arm.

In the figure: lower support arm 1, guide roller 2, upper support arm 3, guide roller opening adjustment mechanism 4, guide body 5, lower support arm fixing bolt 6, fixed bracket 7, translation screw rod 8, translation handle 9 , screw nut 10, limit opening tile seat 11, ear plate 12, frame body 13, pressure plate 14, worm 15, worm wheel 16, coupling 17, adjustment handle 18, adjustment nut 19, adjustment screw 20, horizontal movement mechanism 21. Card slot 22, limit baffle 23, chute 24, connecting pin hole 25, guide column 26, adjusting screw fixing tile seat 27, limiting boss 28, adjusting nut mounting tile seat 29, guard plate 30. Side baffles 31.

Detailed ways

As can be seen from the accompanying drawings, the vertical rolling mill entrance shared induction device of the present invention is mainly composed of a lower support arm 1, a guide roller 2, an upper support arm 3, a guide roller opening adjustment mechanism 4, a guide body 5, a fixed bracket 7, a guide Guard body horizontal moving mechanism 21 and corresponding connector are formed. the

The fixed bracket 7 as a bracket for the horizontal movement of the guide body 5 is in the shape of a "T" as a whole, and is assembled by a frame body 13 and an ear plate 12 . A limit baffle 23 is fixed on the inner side of the frame body 13, and a chute 24 is processed in the middle of the upper surface of the frame body 13, and the limit baffle 23 and the chute 24 can carry out horizontal and vertical direction adjustment to the guide body 5 respectively. limit. Simultaneously, on the upper surface of the frame body 13, there are also two inverted "L" shaped pressure plates 14 fixed by bolts. The limiting boss 28 is movably clamped in the slot 22 and can slide along the slot 22 . Two lugs 12 are respectively connected to the frame body 13 two ends with four bolts, and two lugs 12 are then respectively fixed on the columns of the vertical rolling mill outer frame archway.

The guide body 5 is a four-column structure with a closed bottom. The upper end of the guide body 5 is respectively provided with an opening adjustment nut fixing tile seat 29, and a connecting pin is respectively provided at the corresponding positions of the upper ends of the four guide body columns 26. Holes 25, the middle and lower parts of the front and rear columns 26 of the guide body 5 are respectively provided with an adjustment screw fixed tile seat 27, the two ends of the lower surface of the guide body 5 bottom plate are provided with limit bosses 28, and the middle position is fixed with a travel nut limit opening tile seat 11. The limit boss 28 is inserted in the draw-in groove 22 of the fixed bracket 7, and can move along the rolling line direction in the draw-in groove 22; In the groove 24, the movement function of the guide body 5 can be realized under the action of the horizontal movement mechanism 21.

Horizontal movement mechanism 21 is made up of fixed translation screw mandrel 8 and moving nut 10 . The outer end of the translation screw rod 8 has a translation handle 9, and the inner end is fixed on the screw bearing seat. The translation screw rod 8 and the screw nut 10 are connected and matched by a screw, and the screw nut 10 is fixedly installed on the travel nut limit of the guide body 5. In the tile seat 11 of the bit opening. Pull the translation handle 9 at the outer end of the translation screw rod 8, and the translation screw mandrel 8 drives the nut 10 and the guide body 5 to move along the direction of the rolling line.

Guide roller aperture adjustment mechanism 4 is mainly made up of worm screw 15, worm wheel 16, shaft coupling 17 and adjustment screw mandrel 20. A set of worm gear and worm mechanisms are respectively arranged on both sides of the coupling 17. One end of the worm 15 is connected to the coupling 17, and the other end has an adjustment handle 18; Be connected in the square hole of worm gear 16, and the lower end is then connected on the adjusting screw mandrel fixing tile seat 27 of guide body column 26. Adjustment screw mandrel 20 is also provided with adjustment nut 19, and adjustment nut 19 is connected with the adjustment nut installation tile seat 29 that upper support arm 3 inner sides guide roller 2 bearing blocks are connected. Manually rotate the adjustment handle 18, the worm 15 drives the worm wheel 16 to rotate, and the worm wheel 16 drives the adjustment screw 20 to rotate, so that the adjustment nut 19 moves up and down, thereby driving the upper support arm 3 connected with the adjustment nut 19 to rise and fall synchronously to realize the opening of the guide roller adjustment.

Both the front ends of the upper support arm 3 and the lower support arm 1 are equipped with a guard plate 30, and side baffles 31 are processed on both sides of the rear end, which are used to limit the position of the rolled piece in the horizontal direction. The front and rear parts of the upper support arm 3 and the lower support arm 1 are each equipped with a guide roller bearing housing with self-lubricating bearings. The two ends of the guide roller 2 are embedded in the guide roller bearing housing. limit. The rear guide roller bearing seat of the upper support arm 3 is connected with an adjusting nut mounting tile seat 29 for installing an adjusting nut 19, and the adjustment and spacing of the guide roller 2 are realized by the guide roller opening adjustment mechanism 4 . The rear portion of the lower bracket arm 1 is fixed on the lower bottom surface of the guide body 5 by the lower bracket arm fixing bolt 6 . During installation, it should be ensured that the upper surface of the lower guide roller 1 is at the same height as the lower working surface of the chute between rolling mills. When changing the rolling specifications, the lower guide roller 1 is fixed, that is, the height is constant, and only the upper guide roller 3 can be adjusted. In order to ensure the straightness of the rolled piece biting into the rolling mill, the present invention adopts a double guide roller structure, and at the same time, because the guard plate 30 is installed between the rolls and the guide rollers, it can correctly guide the rolled piece to bite into the pass smoothly.

Claims (2)

1. A common induction device for the entrance of a vertical rolling mill, characterized in that the shared induction device includes a fixed bracket, a guide body, an upper support arm, a lower support arm, a guide roller, a guide roller opening adjustment mechanism and a guide guard Body horizontal movement mechanism; The fixed bracket is composed of a frame body and an ear plate. There is a limit baffle on one side of the frame body, and a chute is processed in the middle of the upper surface. Two inverted "L"-shaped pressure plates are fixed on the frame body with bolts. The "L" shaped pressure plate and the upper surface of the frame body form two card slots, and the fixed bracket is fixed on the column of the archway of the outer frame of the vertical rolling mill through the ear plates at both ends of the frame body; The guide body is a four-column structure with a closed bottom. The bottom plate of the guide body is provided with a limit boss and a travel nut limit opening tile seat. The limit boss is inserted into the frame body card slot, and the travel nut limit The open tile seat is movably installed in the chute of the fixed bracket; The horizontal movement mechanism is composed of a translation screw and a nut. The outer end of the translation screw has a translation handle, and the inner end is fixed on the bearing seat of the screw. The guide body travels in the limit opening tile seat of the nut; The opening degree adjustment mechanism of the guide roller is composed of a worm gear, a worm, a shaft coupling and an adjustment screw. A set of worm gear and worm mechanisms are arranged on both sides of the coupling. One end of the worm is connected to the coupling, and the other end has an adjustment handle. The worm gear There is a square hole in the middle, the upper end of the adjustment screw is connected to the square hole of the worm wheel, and the lower end is connected to the fixed tile seat of the adjustment screw of the guide column; The front end of the upper support arm and the lower support arm is equipped with a guard plate, and the two sides of the rear end are provided with side baffles. The bearing seat of the guide roller is connected with the adjusting nut mounting tile seat of the adjusting screw rod, and the rear part of the lower support arm is fixed on the lower bottom surface of the guide body by the lower support arm fixing bolt. 2. The common induction device at the entrance of the vertical rolling mill according to claim 1, characterized in that the upper surface of the lower guide roller is at the same height as the lower working surface of the chute between rolling mills.

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