KR100923547B1 - Height changable bridge apparatus for guiding plate in a rolling utility - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height varying bridge device for guiding a heavy plate of a rolling plant, wherein a thick plate is supported and plated in place of a work roll when thick plate rolling is performed, and supports a thick plate in place of a work roll when thick plate rolling is performed. A device for guiding a thick plate of a rolling mill, the sliding plate comprising: a sliding table (20) mounted to a facility frame to move in a direction parallel to a traveling path of a thick plate; An elevating table 30 mounted on an upper portion of the sliding table 20 to move upward and downward; And a bridge table 60 mounted on an upper portion of the elevating table 30 so as to be movable upward and downward, and including a sliding guide 64 protruding from the upper surface of the elevating table 30 in parallel with a traveling path of the rear plate. According to this, the position of the bridge table is easy to adjust, and the plate and the path of the thick plate are smoothly performed.

Plate, Rolled, Bridge, Stand, Workroll

Description

Height changable bridge apparatus for guiding plate in a rolling utility}

Figure 1 (a) is a schematic configuration diagram showing a rolling equipment of a general steel sheet;

Figure 1 (b) is a schematic block diagram showing a rolling equipment of a thick plate according to the prior art;

Figure 1 (c) is a schematic block diagram showing a state in which the height variable bridge device according to the present invention is provided in the thick plate rolling equipment;

Figure 2 is a perspective view of the height variable bridge device for guiding the thick plate of the rolling mill according to the invention as a whole;

Figure 3 is a schematic configuration diagram showing a state in which the height-variable bridge device according to the present invention is mounted on a rolling facility;

Figure 4 is a detailed view showing the configuration of the lifting table of the present invention;

Fig. 5 is a detailed view of the main part of Fig. 4;

6 is a detailed view of a bridge table, which is a main part of the present invention.

Explanation of symbols on the main parts of the drawings

F: Frame 10: Sliding Base

12: guide groove 20: sliding table

22: wheel 24: guide rail                 

30: lifting table 31, 32: link bar

34: wheel 38: cylinder

40: piston 42: connecting rod

46: crankshaft 50: cylinder

60: bridge table 62: bridge body

64: sliding guide 66A, 66B: magnetic roll

67a, 67b, 78: sprocket 68: drive motor

70: groove 72: rotation axis

74: pushing cam 76; Tumbler

77: pulling needle

The present invention relates to a height-variable bridge device for guiding a thick plate of a rolling mill, and more particularly, to a height-variable bridge device for guiding a thick plate of a rolling mill to support and plate a thick plate instead of a work roll when thick plate rolling is performed. It is about.

In general, the tempered rolling equipment of the steel sheet is a rolling stand 110A, 110B of the upper, lower work roll 120 and the upper, lower backup roll 130 as shown in (a) of FIG. It has a continuous configuration at predetermined intervals along the path of, the rolling of the steel sheet (S) is performed in each rolling stand (110A, 110B) under different rolling conditions.                         

In addition, when thick plate rolling having a thickness of 0.8 mm or more is performed, some stands 110B are shown in FIG. 1B due to various reasons such as problems with the thickness design of the rolled steel sheet and breakage of the work roll. After removing the work roll 120 from the installation of the plate-shaped bridge 140 in the portion where the lower work roll was mounted. That is, the bridge 140 located between the guide tables 150 serves as a lower work roll.

However, when the lower work roll is replaced with the bridge 140 having a simple structure having a plate shape and a thick plate rolling operation is performed, the following problems are encountered.

First, when the tip of the steel sheet S passes between the work roll 120 of the first stand 110A through the pay-off reel 161 and the entrance bridle rolls 162 and 163, the first stand 110A The operation of the mailing is performed as the screw-up / screw-down is started, and the work roll for providing the mailing force to the steel sheet S is removed from the stand 110B, and only the steel sheet path is provided. Since only the bridge 140 positioned at the bottom of the plate 110 is provided, the steel sheet S is allowed to advance to the exit bridal rolls 164 and 165 only with the force of the sheet by the work roll 120 of the stand 110A. It has a problem that was not easy.

Next, whenever steel plate rolling is performed, the steel bridge 140 must be manually positioned between the guide tables 150. This operation is very heavy and the bridge 140 is very likely to cause a safety accident. In addition, after fixing the bridge 140 in a specific position, it was difficult to adjust the height of the bridge 140, the height (rolling is carried out) can be carried out smoothly to the position of the bridge 140 In the case where the steel sheet S is fixed to have a height higher than that of the steel sheet when the steel sheet is being fixed, a problem occurs that the lower surface of the rolled steel sheet S interferes with the upper surface of the bridge 140, and rolling is performed at the position of the bridge 140. In the case where the steel sheet is fixed to have a steel sheet height when the steel sheet is being fixed, a problem arises in that the mailing operation itself is impossible.

The present invention is to solve the above-mentioned conventional problems, the height of the thick plate guide for rolling equipment of the rolling equipment which is located in the lower part of the steel sheet when the plate rolling is performed to support the guide plate and the rolled steel sheet instead of the work roll It is an object to provide a bridge device.

As a technical configuration for achieving the above object, the present invention, a sliding table mounted on the equipment frame to move in the direction parallel to the traveling path of the thick plate, and the lifting table mounted to be moved up and down on the sliding table And a bridge table mounted on an upper portion of the elevating table so as to be movable up and down, and having a sliding guide parallel to the traveling path of the rear plate protruding in a plurality of places in the width direction, instead of the work roll when the plate rolling is performed. A thick plate guide bridge device of a rolling apparatus configured to support and plate a thick plate, wherein the bridge table includes a magnetic roll and a magnetic roll mounted to enable axial rotation in a number of places with respect to a traveling path of the thick plate. A drive motor for rotationally driving, and formed in the width direction on the upper surface thereof, Grooves disposed at a plurality of locations on the path, and a rotation shaft mounted inside the groove to enable rotation in the axial direction, and are rotated by the drive motor, and the maximum lift position is fixed to the rotation shaft than the upper portion of the sliding guide. And a pusher cam having a long axis that protrudes further upward, and a pull needle radially formed on the rotary shaft in a direction parallel to the short axis of the pusher cam, and having a pointed tip, wherein the lifting table includes a piston installed in a horizontal direction and one end portion. Is rotatably connected to the bridge table, and the other end is driven to the piston so that a connect rod for moving the bridge table up and down is installed.

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

Figure 1 (c) is a schematic block diagram showing a state in which the height-variable bridge device according to the present invention is provided in the thick plate rolling equipment, the work roll is removed from the second stand (110B) of the final rolling mill, the lower portion thus removed Instead of the work roll, the height-variable bridge device 1 of the present invention is located and configured to support the lower part of the steel sheet S.

Figure 2 is a perspective view showing the apparatus of the present invention as a whole, Figure 3 is a perspective view showing a state in which the apparatus of the present invention mounted on the rolling equipment, the sliding base 10 is fixed to the frame (F) of the rolling equipment The sliding base 10 is formed to have a rectangular plate shape parallel to the steel plate while being positioned under the steel plate traveling along the rolling path, and the upper surface of the sliding base 10 in the longitudinal direction of the sliding base 10. A sliding table 20 is mounted to be able to move forward and backward along.

In more detail, the sliding base 10 has continuous guide grooves 12 formed along the longitudinal direction at both left and right edges thereof in the longitudinal direction, and each of the guide grooves 12 has two. The wheels 22 are fitted to be movable in the longitudinal direction of the guide groove 12 by rolling motion, and the wheels 22 are mounted on the sliding table 20 so as to be idle. In addition, the sliding table 20 is moved forward and backward in the longitudinal direction of the sliding base 10 by driving the cylinder 14 mounted on the frame F or the sliding base 10. Hereinafter, for convenience of description, the forward direction of the cylinder 14 is 'forward', the backward direction is 'rear', and both sides with respect to the longitudinal direction of the sliding base 10 are 'left, right both sides'.

An elevating table 30 is installed on the upper portion of the sliding table 20 so that the elevating table 30 can be raised and lowered by the link means. The rod 31 and the second link bar 32, the link means are provided on both the left and right sides of the space between the sliding table 20 and the elevating table 30, respectively.

The lower end of one side of the first link bar 31, the wheel 34 is installed to be idling, the guide rail 24 in a longitudinal direction in the longitudinal direction on both the rear left and right sides of the sliding table (20) ) Is formed, and the wheels 34 are installed on the guide rails 24 to move along the guide rails 24 by rolling motion, and the other end of the first link bar 32 is an upper end. Is rotatably provided at both the front left and right sides of the elevating table 30, respectively.

The lower end of one side of the second link bar 32 is rotatably installed at both the front left and right sides of the sliding table 20 and the upper end of the other end of the second link bar 32. Is rotatably installed at the rear left and right both sides of the elevating table 30, respectively.

In this case, a pin receiving hole 31a having a long hole shape is formed in a central portion of the first link bar 31, and the pin 33 can rotate and slide in the pin receiving hole 31a. To be mounted.

In addition, the first link bar 31 is connected to be integrally operated by the connecting rod 36, the connecting rod 36 is moved forward, backward by the drive of the cylinder 38 mounted on the sliding table (20). When the cylinder 38 is driven by being connected to the rod 39 that is moved forward and backward, the lifting table 30 is raised and lowered.

Piston receiving holes 30a are vertically formed at four corners of the elevating table 30, and pistons 40 are vertically formed at each of the piston receiving holes 30a. It is fitted to be movable.

In addition, one end of the connecting rod 42 is rotatably connected to the lower end of the piston 40 as shown in FIG. 5, and the crank pin 44 is connected to the other end of the connecting rod 42. The axial rotation is fitted so as to be possible, and the left and right ends of the crank pin 44 are connected to the crank arms 47 of the crank shaft 46, respectively.

In addition, the crank shaft 46 is mounted to the bracket 48 fixed to the elevating table 30 to enable rotation in the axial direction, and is connected to the left and right pistons 40 of the elevating table 30. Crank pins 44 facing each other are connected to be axially rotated together via a connector 52, the connector 52 is connected to be axially rotated together via a connecting rod 54, the piston 40 And one of the crankshafts 46 connected to the connecting rod 42, the crank pin 44 and the crank arm 47 to the cylinder 50 mounted on the elevating table 30 to rotate in the axial direction. It is configured to be provided.

In addition, a bridge table 60 is fixedly installed on the upper end of each of the pistons 40 via a connecting plate 56, and the bridge table 60 has the lifting table as shown in more detail in FIG. 6. It has a bridge body 62 formed in the form of an approximately plate parallel to 30 and fixed to the upper end of the piston 40.                     

The upper surface of the bridge body 62 is provided with a slit-shaped sliding guide 64 protruding upward in a number of places spaced apart in the width direction with respect to the traveling direction of the thick plate and parallel to the traveling direction of the thick plate, At the front and rear ends of the bridge body 62, magnetic rolls 66A and 66B for generating magnetic force are mounted to enable rotation in the axial direction, and any one of the magnetic rolls 66A and 66B is driven. Rotationally driven by a motor 68, a sprocket 67a is provided at one end of the magnetic rolls 66A and 66B so that the sprockets 67a are connected to each other via the chain 69.

In addition, the upper surface of the bridge body 62 is provided with a concave groove 70 continuously formed in the width direction, the groove 70 is disposed in a plurality of places along the longitudinal direction of the bridge body 62, the groove Inside the 70 is a rotation shaft 72 having a long length in the same direction as the longitudinal direction of the groove 70, the rotation shaft 72 is mounted to the bridge body 62 to enable rotation in the axial direction At one end of the rotating shaft 72, a sprocket 67b is mounted and connected to the chain 69 to be driven to rotate by the chain 69.

In addition, the rotary shaft 72 located inside any one of the grooves 70 is provided with a pushing cam 74 having an elliptical shape and mounted at a plurality of places in the longitudinal direction, and the pushing cam 74 is The long axis side diameter is set so that the end portion protrudes more upward than the sliding guide 64 when the long axis side edge is directed upward, and the end portion thereof is the sliding guide 64 when the short axis side edge is directed upward. The diameter on the short axis side is set so as not to protrude from. Of course, the pushing cam 74 mounted at a plurality of locations in the longitudinal direction of the rotation shaft 72 has a long axis side edge portion when the other push core cams 74 have one long axis side edge portion directed upward or downward, respectively. It is fixed to face up and down, respectively.

In addition, the rotation shaft 72 located inside the other of the groove 70 is provided with a pull plate 76 mounted in a plurality of places in the longitudinal direction while having a disc shape, the pull plate 76 is A pulling needle 77 having a pointed tip is integrally formed at the opposite edge portion, and the tip portion of the pulling needle 77 protrudes more upward than the sliding guide 64 when the pointed tip of the pulling needle 77 faces upward. And the diameter of the pull plate 76 is set so that the edge portion of the pull plate 76 does not protrude from the sliding guide 64. Of course, when the front end of the pull needle 77 provided in any one of the pull plate 76 mounted in a plurality of places in the longitudinal direction of the rotary shaft 72 is directed to the upper and lower, respectively, pull the other pull plate 76 The tip of the needle 77 is also fixedly installed so as to face up and down, respectively.

And, when one side of the short-side edge portion of the pushing cam 74 is protruded more than the sliding guide 64 toward the top, the pulling needle 77 of the pull plate 76 is the sliding guide 64 When the pushing cam 74 is installed on the rotation shaft 72 disposed at any one of the grooves 70, the rotary plate 72 is disposed at the more protruding position. 76) and pull needle 77 is good to be installed.

In addition, the tension of the chain 69 is adjustable to be maintained in the range set by the tensioning sprocket 78, the sprocket 78 is rotated in engagement with the chain 69, the sprocket 78 is the bridge It is rotatably mounted on the slider 79 mounted on the main body 62 so as to be slidable up and down, and the slider 79 is an elastic force of the springs 79a and 79b mounted on the upper and lower portions of the slider 79. It is installed to be maintained at a certain position by.

The operation of the present invention having the above configuration will be described.

When the work of the ordinary material is performed, that is, when rolling of thin plates having a thickness thinner than the set thickness is performed, the bridge table 60 is kept in the standby position so as not to interfere with the work roll and the rolled thin plates.

That is, the sliding table 20 is moved toward the sliding base 10 by the reverse of the cylinder 14, and the lifting table 30 is lowered toward the sliding table 20 by the backward of the cylinder 38. The bridge table 60 is lowered to the lifting table 30 by the driving of 50).

When thick plate rolling of a predetermined thickness or more is performed, the work roll of the second stand of the final rolling mill is removed from the installation, and then the cylinder 14 is advanced to move the sliding table 20 away from the sliding base 10, that is, the work. Move in the direction toward the roll.

Subsequently, the cylinder 38 is advanced to raise the lift table 30, and the cylinder 50 is driven to raise the bridge table 60.

In this state, the bridge table 60 is replaced with the lower work roll removed from the installation, that is, the bridge table 60 is located in the pass line of the thick plate.

After placing the bridge table 60 in the pass line of the thick plate in this way, the work roll of the stand located in front of the bridge table 60 with respect to the pass line is moved to a rolling position, that is, close to each other, so that rolling of the thick plate is performed. Begins.

At this time, the magnetic motor 66A, 66B and the rotation shaft 72 are axially rotated together by the driving motor 68 being rotated.

When the front end of the rolled thick plate enters the upper portion of the bridge table 60, the magnetic roll 66B is first contacted with the magnetic roll 66B positioned forward with respect to the pass line, and the magnetic roll 66B is caused by magnetic force. A predetermined force is applied to move along this pass line.

Subsequently, the lower surface of the thick plate is supported by the sliding guide 64 formed on the upper surface of the bridge table 60 and smoothly moved along the pass line. The sliding guide 64 is in line contact with the lower surface of the thick plate so that the thick plate is Minimize the generation of frictional forces that hinder the progress of

In addition, the pushing shaft 74 and the rotating plate 76 mounted on the rotating shaft 72 are driven to rotate by the rotation of the rotating shaft 72, so that the long axis side edge of the pushing cam 74 is lower than the sliding guide 64. While protruding further upward, the rear plate is lifted upwards than the sliding guide, and the pulling needle 77 of the rotating plate 76 contacts the lower surface of the rear plate while the long axis side edge of the pushing cam 74 is moved downward. The plate is then pulled to move along the passline.

The tip of the thick plate is finally wound off the bridge table 60 by a magnetic roll 66A and rolled up in a tension reel.

Of course, when the thick plate begins to be wound on the tension reel, the cylinder 50 is driven to lower the piston table 40 and the bridge table 60 mounted on the piston 40 so as to deviate slightly below the thick plate pass line. .

As described above, according to the height-variable bridge device for guiding the thick plate of the rolling mill according to the present invention, it is possible to easily adjust the position of the bridge table installed to replace the work roll removed from the stand of the final rolling mill for thick plate rolling. Has the effect of smoothing the path.

Claims (4)

Sliding table 20 mounted on the equipment frame to move in the direction parallel to the traveling path of the thick plate, elevating table 30 mounted on the upper side of the sliding table 20 to move up and down, and the elevating table 30 It is mounted so as to be movable up and down on the upper part and includes a bridge table 60 in which the sliding guide 64 protruding in parallel with the traveling path of the rear plate protrudes in a plurality of places in the width direction, and the work roll when the thick plate rolling is performed. As a thick plate guide bridge device of a rolling equipment to support and plate the thick plate instead of The bridge table 60 is a drive for rotationally driving the magnetic rolls 66A and 66B and the magnetic rolls 66A and 66B mounted in a plurality of places along the traveling path of the rear plate so as to enable rotation in the axial direction. The motor 68, the groove 70 is formed long in the width direction on the upper surface and arranged in a plurality of places on the traveling path of the thick plate, and the drive is mounted to enable the rotation in the axial direction inside the groove 70 A pushing cam 74 having a rotating shaft 72 rotated by a motor 68, a long shaft fixed to the rotating shaft 72, and having a maximum raised position protruding upwardly above the upper portion of the sliding guide 64; It includes a pull needle 77 formed radially on the rotating shaft 72 in the direction parallel to the short axis of the pushing cam 74, the pointed tip, The lifting table 30 has a piston 50 installed in a horizontal direction, one end of which is rotatably connected to the bridge table 60, and the other end of which is driven to the piston 50 so that the bridge table 60 is connected. A height adjustable bridge device for guiding a thick plate of a rolling equipment, characterized in that a connect rod (42) for moving up and down is provided. The method of claim 1, A cylinder 40 having one end of the connecting rod 42 rotatably connected to the lower portion of the bridge table 60 is provided, and a crank pin 44 is disposed at the other end of the connecting rod 42 in the axial direction. It is fitted to enable rotation of the crank pin 44, the left and right ends of the crank shaft 46 is connected to the crank arm 47 of the crankshaft 46, respectively, the crankshaft 46 through the bracket 48 Height-variable bridge device for guiding the thick plate of the rolling equipment, characterized in that the axial rotation is mounted to the lifting table 30. delete delete

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