CN215143406U - Guide and guard device for preventing head of hot-rolled H-shaped steel from being scratched and laterally bent - Google Patents

Abstract

The utility model discloses a prevent leading of hot rolling H shaped steel head fish tail and lateral bend and defend device belongs to hot rolling H shaped steel production technical field. The utility model comprises a guide frame consisting of a first guide plate, a second guide plate and a first guide plate, wherein a movable beam is fixedly connected with the guide frame and arranged at the upper ends of the two guide plates; the balance piece is arranged at the upper part of the movable beam and is connected with a second guard plate through a steel cable, and the second guard plate is arranged between the movable beam and the first guard plate; the upper ends of the first guide plate and the second guide plate are provided with limiting parts for limiting the displacement of the second guard plate. The fixing mechanism consisting of the balance piece and the steel cable is used for carrying out single-point suspension on the second guard plate, and the second guard plate, the limiting piece and the roller are used together to limit the movement of the second guard plate along the rolling line direction; and meanwhile, the upper ends of the two guide plates are provided with limiting parts to limit the moving area of the second guard plate, so that the second guard plate does not deviate from the direction of a rolling line, and the phenomenon that the deviation of the second guard plate causes scratches on the inner side wall of the H-shaped steel or causes lateral bending of the H-shaped steel is avoided.

Description

Guide and guard device for preventing head of hot-rolled H-shaped steel from being scratched and laterally bent

Technical Field

The utility model belongs to the technical field of hot rolling H shaped steel production, more specifically the prevent hot rolling H shaped steel head fish tail and lateral bending's guide and guard device that says so.

Background

The H-shaped steel guide is an important component in the rolling process of the shaped steel and is used for guiding a rolled piece to smoothly enter and exit a rolling mill and ensuring the strip shape of the rolled piece in the rolling process. The exit guide of the tandem mill of the conventional design mainly has the following problems: 1. the upper guard plate is hung by a single point, and the middle of the upper guard plate is tightly pressed by a spring, so that the upper guard plate is difficult to control during production adjustment, and if the tension is too small, the gap between the upper guard plate and the surface of the roller is too large, so that surface scratches and even sticking accidents are easily caused during production; if the tension is too large, the gap between the upper guard plate and the roller surface is too small, so that the upper guard plate and the roller surface are abraded, the surface defect of a rolled material is easily caused, and the surface quality of the finished section steel is reduced. 2. The upper guard plate is easy to swing left and right along the rolling line direction under the influence of a rolling mill and the impact vibration factor of a rolled piece at the moment of entering and exiting the rolling mill, and the rolled piece can be bent towards a transmission side or an operation side when exiting the rolling mill, so that the surface of the rolled piece is easy to scratch, and the surface quality is poor; when the lateral bending is serious, the problem that the steel is difficult to bite in the next pass is easily caused, steel piling accidents are formed, the steel can only be stopped for adjustment, and the hourly yield and the product percent of pass are influenced.

Therefore, the outlet guide and guard device of the continuous rolling mill, which has a reasonable structure and is simple to operate, needs to be designed, is convenient to rapidly adjust in the rolling process, and simultaneously reduces the problems that the upper guard plate is loosened and shakes left and right along the rolling line direction due to the vibration of the rolling mill and the collision of a rolled piece, so that the head of the H-shaped steel is scratched or laterally bent.

Through search, the patent document with the Chinese patent number of CN 207043038U and the name of 'section steel continuous rolling mill outlet guide device' discloses a section steel continuous rolling mill outlet guide device. According to the novel upper guard plate, the two vertical parallel hanging rods are arranged, so that the front and back stress of the upper pressure plate is more uniform, and the arrangement of the compression spring ensures the continuous uniform stress of the upper guard plate; the guide vertical roll supporting assembly can effectively prevent a rolled piece or a finished product from being scratched; the lower guard plate supporting cross beam, the lower guard plate supporting cross beam fixing block and the first adjusting bolt which are arranged below the lower guard plate are matched for use, so that the gap between the lower guard plate and the lower roller groove can be effectively controlled by adjusting the lower guard plate supporting cross beam, and the roller is prevented from propping against a guide support or winding during the conveying process. However, the device can only ensure the fixation of the upper guard plate along the rolling line direction, and the upper guard plate is loosened due to the vibration of the rolling mill along with the extension of the rolling time, so that the upper guard plate is shaken leftwards and rightwards along the rolling line direction, and the strip shape of the head part of a rolled piece is difficult to ensure.

The patent document with the patent number of CN 104399759A and the name of 'a guide device and a guide method for hot rolling an H-shaped steel rolled piece' discloses a technical problem of poor guide stability in the field of hot rolling H-shaped steel rolled pieces in the prior art, and further solves the technical problem that the H-shaped steel rolled pieces are easy to twist in the prior art. The left part positioning device comprises a standing plate, a first inclined plate, a second inclined plate and a third inclined plate, wherein the first inclined plate is fixedly arranged on the inner side surface of the standing plate for providing left part positioning and is used for providing left part balance force for the upper left inclined surface of a left wing plate of an H-shaped steel rolled piece. And a second inclined plate is fixedly arranged on the inner side surface of the station plate for providing right positioning and is used for providing right balance force for the right lower outer inclined surface of the right wing plate of the H-shaped steel rolled piece. The guide and guard device can better solve the problem of torsion of an H-shaped steel rolled piece, but cannot solve the problem of head side bending of a medium and fine rolling mill in the rolling process.

The patent publication No. CN 105834230B, entitled "Universal guide and guard device for H-shaped steel roughing mills", discloses a universal guide and guard device for H-shaped steel roughing mills, which comprises a plurality of independent guide and guard blocks and a cross beam for supporting the guide and guard blocks, and meets the requirements of hole groove positions and depth changes of different H-shaped steel specifications by adjusting the positions and heights of the independent guide and guard blocks. The guide device related to the patent can meet the requirements of a roughing mill and is not suitable for an outlet guide of a finishing mill for hot-rolled profiles.

The patent publication No. CN 202725641U entitled "novel guide and guard device for medium plate rolling mill" is entitled. A novel guide and guard device for medium plate rolling mill is disclosed. This patent is including dull and stereotyped, and dull and stereotyped equipartition "U" shape hole groove along length direction, and it enables most slag and directly falls into the trench, and the ditch is transferred into again through "U" shape hole groove to few parts fall behind the guide device, has improved rolling material surface quality like this, but can not solve the finish rolling mill export guide and prevent the rolled piece lateral buckling problem in the shaped steel.

Disclosure of Invention

1. Technical problem to be solved by the utility model

In view of H shaped steel when the hot rolling export, head fish tail or lateral bend easily take place, lead to needing to shut down the problem of carrying out the adjustment, the utility model provides a prevent leading and defending device of hot rolling H shaped steel head fish tail and lateral bend exports to hot rolling H shaped steel finishing mill and leads to defending and carry out effective fixation, improves its export and leads to defending device's stability, reduces hot rolling H shaped steel because head fish tail or lateral bend cause time and the number of times of shutting down the adjustment in rolling process.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a prevent hot rolling H shaped steel head fish tail and side bend guide and guard device, including the guide and guard frame that first baffle, second baffle and first guard constitute, first baffle and second baffle are installed in first guard both sides; the movable beam is fixedly connected with the guide frame and arranged at the upper ends of the two guide plates; the balance piece is arranged at the upper part of the movable beam and is connected with a second guard plate through a steel cable, and the second guard plate is arranged between the movable beam and the first guard plate; and the upper ends of the first guide plate and the second guide plate are provided with limiting parts for limiting the displacement of the second guard plate.

Furthermore, one end of the first guard plate and one end of the second guard plate, which are close to the rolling mill, are closely attached to the roller, and the end parts of the two guard plates are in arc shapes and closely attached to the roller surface of the roller.

Furthermore, a fixed plate is fixedly arranged on one side, away from the rolling mill, of the movable beam, and the lower edge of the fixed plate exceeds the movable beam to block the second guard plate from moving.

Furthermore, the movable beam is provided with a screw hole, and a stud is arranged in the screw hole; the stud penetrates through the fixed beam to movably connect the movable beam with the fixed beam.

Furthermore, the balance piece is sleeved on the fixed beam and rotates along the fixed beam; the steel cable is connected to the middle part of the second guard plate and close to the rolling mill.

Furthermore, a movable wedge-shaped block is arranged between the second guard plate and the fixed plate, and the thicker part of the wedge-shaped block is far away from the center of the fixed plate.

Furthermore, the first guide plate and the second guide plate are arranged on the base through fasteners; the base is provided with a clamping groove matched with the first guard in shape, and the first guard is arranged in the clamping groove.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) the utility model discloses a prevent leading of hot rolling H shaped steel head fish tail and lateral bend and defend device is equipped with the draw-in groove with first guard joint on the base for fixed first guard prevents that it from producing the removal in the front and back direction. The fixing mechanism consisting of the balance piece and the steel cable is used for carrying out single-point suspension on the second guard plate, and the second guard plate, the limiting piece and the roller are used together to limit the movement of the second guard plate along the rolling line direction; and meanwhile, the upper ends of the two guide plates are provided with limiting parts to limit the moving area of the second guard plate, so that the second guard plate does not deviate from the direction of a rolling line, and the phenomenon that the deviation of the second guard plate causes scratches on the inner side wall of the H-shaped steel or causes lateral bending of the H-shaped steel is avoided.

(2) When the balance piece rotates to drive one end of the second guard plate to ascend, the other end of the second guard plate descends along with the second guard plate, so that the second guard plate is in contact with the H-shaped steel, and the surface of the H-shaped steel is easily scratched. The utility model discloses a prevent leading of hot rolling H shaped steel head fish tail and lateral bend and defend device sets up the wedge of activity between second board and fixed plate, defends the angle that one end was lifted up according to second board and cable wire connection, adjusts wedge male distance, defends the board with the second and blocks, makes it not fall, has avoided the second to defend the board and has contacted H shaped steel, has guaranteed the intact on H shaped steel surface.

(3) The utility model discloses a prevent hot rolling H shaped steel head fish tail and side bend lead and defend device, walking beam accessible double-screw bolt height-adjusting to can adapt to the H shaped steel of multiple size. Meanwhile, the movable beam is integrally connected with the guide frame, so that the impact force of the rolled piece to the guide can be transmitted, and the fixation of the guide device is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the guide device of the present invention;

FIG. 2 is a front view of the guide of the present invention;

FIG. 3 is a side view of the guide of the present invention;

FIG. 4 is a schematic view of the installation of the middle guard plate and the roller of the present invention;

fig. 5 is a schematic position diagram of the wedge-shaped plate member of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a base; 2. a fastener; 3. a first guide plate; 4. a second guide plate; 5. a first guard plate; 6. a second guard plate; 7. a limiting member; 8. a fixing plate; 9. a movable beam; 10. a fixed beam; 11. a balance member; 12. a stud; 13. a steel cord; 14. a first roll; 15. a second roll; 16. a wedge block.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example 1

With reference to fig. 1-3, the guide device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to the present embodiment includes a guide frame composed of a first guide plate 3, a second guide plate 4 and a first guide plate 5, wherein the first guide plate 3 and the second guide plate 4 are mounted on a base 1 through a fastener 2; set up the draw-in groove that suits with first guard 5 shapes on the base 1, first guard 5 installs in the draw-in groove, and first baffle 3 and second baffle 4 are installed in first guard 5 both sides.

In this embodiment, the movable beam 9 is fixedly connected with the guide frame and arranged at the upper ends of the two guide plates; the upper part of the movable beam 9 is provided with a balance piece 11, the balance piece 11 is connected with a second guard plate 6 through a steel cable 13, and the second guard plate 6 is arranged between the movable beam 9 and the first guard plate 5. The balance member 11 is a small balance weight. The balance piece 11 is sleeved on the fixed beam 10 and rotates along the fixed beam 10; the steel cable 13 is connected to the middle part of the second guard plate 6 close to the rolling mill. And the upper ends of the first guide plate 3 and the second guide plate 4 are provided with limiting pieces 7 for limiting the displacement of the second guard plate 6. The locating part 7 is the combination of nut and screw rod, and the nut welding is in two baffle upper ends, and the screw rod screw in back can be adjusted and control the interval. The embodiment is provided with a clamping groove clamped with the first guard plate 5 on the base 1, and the clamping groove is used for fixing the first guard plate 5 and preventing the first guard plate from moving in the front-back direction. The second guard plate 6 is suspended in a single point by a fixing mechanism consisting of a balancing piece 11 and a steel cable 13, and the second guard plate 6, the limiting piece 7 and the roller act together to limit the movement of the second guard plate 6 along the rolling line direction; meanwhile, the limiting parts 7 are arranged at the upper ends of the two guide plates to limit the moving area of the second guard plate 6, so that the second guard plate does not deviate from the direction of a rolling line, and the phenomenon that the deviation of the second guard plate causes scratches on the inner side wall of the H-shaped steel or causes lateral bending of the H-shaped steel is avoided.

Referring to fig. 4, in this embodiment, one end of the first guard plate 5 and one end of the second guard plate 6, which are close to the rolling mill, are closely attached to the roll, and the ends of the two guard plates are arc-shaped and closely attached to the roll surface of the roll. The first guard plate 5 is tightly attached to the second roller 15, and the second guard plate 6 is tightly attached to the first roller 14.

This embodiment is kept away from rolling mill one side at walking beam 9 and is fixed set up fixed plate 8, fixed plate 8 is followed down and is surpassed walking beam 9, blocks the activity of second guard 6. The movable beam 9 is provided with a screw hole, and a stud 12 is arranged in the screw hole; the stud 12 penetrates through the fixed beam 10 to movably connect the movable beam 9 with the fixed beam 10. The height of the movable beam 9 can be adjusted through the stud 12, so that the movable beam can be suitable for H-shaped steel with various sizes. The movable beam 9 is integrally connected with the guide frame, so that the impact force of the rolled piece to the guide can be transmitted, and the fixation of the guide device is ensured. Wherein the adjusting distance between the movable beam 9 and the fixed beam 10 is L (d is more than or equal to 0mm and less than or equal to 100 mm).

Referring to fig. 5, a movable wedge block 16 is arranged between the second guard plate 6 and the fixed plate 8, and the thicker part of the wedge block 16 is far away from the center of the fixed plate 8. The wedge-shaped block 16 can be inserted into or pulled out of the gap between the second guard plate 6 and the fixing plate 8. In this embodiment, when the balance member 11 rotates to drive one end of the second guard 6 to ascend, the other end of the second guard 6 descends, so that the second guard 6 contacts the H-shaped steel, and the surface of the H-shaped steel is easily scratched. The inventor sets up movable wedge 16 between second guard 6 and fixed plate 8, according to the angle that the second guard 6 and the one end of being connected of cable wire 13 uplift, adjusts the distance that wedge 16 was inserted, blocks second guard 6, makes it not descend, has avoided second guard 6 to contact H shaped steel, has guaranteed the sound on H shaped steel surface. Wherein, the relationship between the distance H between the second guard plate 6 and the fixed plate 8 and the height d of the second guard plate 6 from the surface of the H-shaped steel is H ═ H₀+ d (d is more than or equal to 0mm and less than or equal to 8mm), wherein h₀The original distance between the second guard 6 and the fixed plate 8 when the wedge 16 is not added.

This embodiment is in practical application, when 5 frame rough rolling +10 frame tandem rolling production lines production H150 x 6 x 9 specification hot rolling H shaped steel and H100 x 6 x 8 specification hot rolling H shaped steel product, used the utility model discloses a guide and guard device, used guide and guard system on the export guide and guard of 12# frame rolling mill, 13# frame rolling mill, 15# frame rolling mill of tandem rolling unit promptly, discovery after rolling, the H shaped steel product head lateral bending of producing reduces, and the head bar improves obviously, and the fish tail number of times of web upside reduces, and the team group transfers the number of times to reduce to 1. After 1500 tons of accumulated production, the outlet guide is checked, the gap between the upper guide plate and the station plate is in a reasonable range, and the upper guide plate is obviously deviated when being found. Thereby reducing the failure occurrence rate in the production process, reducing the surface defects of products, improving the yield and hourly output and improving the performance benefits.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (7)

1. A guide device for preventing the head of hot-rolled H-shaped steel from being scratched and laterally bent comprises a guide frame consisting of a first guide plate (3), a second guide plate (4) and a first guard plate (5), wherein the first guide plate (3) and the second guide plate (4) are arranged on two sides of the first guard plate (5); the method is characterized in that: the movable beam (9) is fixedly connected with the guide frame and is arranged at the upper ends of the two guide plates; a balance piece (11) is arranged at the upper part of the movable beam (9), the balance piece (11) is connected with a second guard plate (6) through a steel cable (13), and the second guard plate (6) is arranged between the movable beam (9) and the first guard plate (5); the upper ends of the first guide plate (3) and the second guide plate (4) are provided with limiting pieces (7) for limiting the displacement of the second guard plate (6).

2. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to claim 1, wherein: one ends of the first guard plate (5) and the second guard plate (6) close to the rolling mill are tightly attached to the roller, and the end parts of the two guard plates are arc-shaped and tightly attached to the roller surface of the roller.

3. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to claim 2, wherein: the fixed plate (8) that sets up in rolling mill one side is kept away from to walking beam (9), fixed plate (8) are followed down and are surpassed walking beam (9), block the activity of second board (6).

4. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to claim 3, wherein: the movable beam (9) is provided with a screw hole, and a stud (12) is arranged in the screw hole; the stud (12) penetrates through the fixed beam (10) to movably connect the movable beam (9) with the fixed beam (10).

5. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to claim 4, wherein: the balance piece (11) is sleeved on the fixed beam (10) and rotates along the fixed beam (10); the steel cable (13) is connected to the middle part of the second guard plate (6) close to the direction of the rolling mill.

6. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to claim 5, wherein: a movable wedge-shaped block (16) is arranged between the second guard plate (6) and the fixed plate (8), and the thicker part of the wedge-shaped block (16) is far away from the center of the fixed plate (8).

7. The guide and guard device for preventing the head of the hot-rolled H-shaped steel from being scratched and laterally bent according to any one of claims 1 to 6, wherein: the first guide plate (3) and the second guide plate (4) are arranged on the base (1) through fasteners (2); the base (1) is provided with a clamping groove which is matched with the first guard plate (5) in shape, and the first guard plate (5) is arranged in the clamping groove.

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