A structure for adjusting the inner width of H-shaped steel rolling and a method for adjusting the same
By using a rotary hydraulic cylinder and worm gear system to adjust the tilt angle and position of the roll sleeves on the H-beam rolling mill, the problem of roll replacement when producing different series of products on the H-beam rolling mill was solved, enabling the production of multiple specifications of H-beams under the same roll system, thereby improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- МААНЬШАНЬ АЙРОН ЭНД СТИЛ КО ЛТД
- Filing Date
- 2026-02-28
- Publication Date
- 2026-06-05
AI Technical Summary
Existing H-beam rolling mills require roll replacement when producing different series of products, resulting in a large roll reserve, high consumption, and low production efficiency, making it impossible to roll H-beam products of different widths using the same roll system.
An H-beam rolling inner width adjustment structure is adopted, including first and second adjustment components. Through a rotating hydraulic cylinder, an eccentric sleeve, and a motor-driven worm gear system, the tilt angle, horizontal height, and position of the roll sleeve can be adjusted, allowing H-beam products of different widths to be rolled under the same roll system.
It reduces roll reserves and consumption, shortens roll changeover time, improves production efficiency, supports diversified H-beam production, and adapts to the hot rolling requirements of different national standards.
Smart Images
Figure CN122142092A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of hot-rolled H-beam production technology, and more specifically, it relates to an adjustment structure for the inner width of H-beam rolling. This invention also relates to a method for adjusting the inner width of H-beam rolling mill rolls. Background Technology
[0002] Existing H-beam rolling mills can be divided into two categories: one is the two-roll archway type mill, mainly used in the billet opening or roughing stage; the other is the universal mill with driven vertical rolls, which achieves rolling of different specifications by changing the roll pass and roll gap. Hot-rolled H-beam production line mill layouts vary widely, with four mainstream forms currently in use.
[0003] The first type is a reciprocating type with an independent universal finishing mill, using an XXH rolling process. It features one or more billet mills, a universal roughing mill, and an edge mill arranged in combination. A separate universal finishing mill is located at the very end of the rolling line. After multiple reciprocating passes of billet and universal roughing, the workpiece is finished solely by the universal finishing mill. The second type is a reciprocating type without a separate finishing mill, using an XH rolling process. It features one or more billet mills, a universal roughing mill, an edge mill, and a universal finishing mill arranged in combination. After multiple reciprocating passes of billet and universal mill, the workpiece is finished directly. The third type is a semi-continuous rolling type, using multiple XH rolling processes. It features one or more billet mills, a universal roughing mill, an edge mill, and a universal finishing mill arranged in tandem multi-stand combination. After multiple reciprocating passes of billet rolling, the intermediate workpiece enters the roughing and finishing mill group, forming a unidirectional multi-stand, one-pass rolling process. The fourth type is the fully continuous rolling type, with multiple XH forms in the rolling process. It involves a multi-stand arrangement of two-high roughing mills, universal roughing mills, edge mills, and universal finishing mills, all completed in a single pass. Currently, the width of the horizontal rolls on all H-beam rolling mills is fixed after machining. Different width rolls are selected when rolling different series of products, and matching rolls must be replaced when changing series. To meet the needs of different industries, my country's national standard for H-beams ranges from 100x500 to 1700x550, totaling 113 series. Globally, there are also standards from other countries such as the US, Europe, Japan, Australia, Korea, and Russia, with specifications differing from the national standard. In total, there are over 400 series, and the same roll system cannot be used for production. Rolls must be changed according to the internal width of the H-beam. Simultaneously producing H-beams of these standards on one or several production lines results in large roll reserves and consumption, high roll replacement frequency, and low production efficiency.
[0004] A search revealed that patent CN120984694A discloses a method for controlling the width of strip in a two-stand rolling mill by calculating parameters such as the free width spread, total free width spread, and width after spread in each pass. This method then calculates the vertical roll opening control value for each pass, ultimately achieving width control in the cross-rolling process of hot continuous rolling roughing. Patent CN104826874A discloses a forced width spread control method for the roughing process in fully continuous hot rolling. In a horizontal mill with perforated rolls, the steel plate is divided into five zones along its width direction. The forced width spread and dog-bone deformation recovery amount are calculated for each zone to obtain the final target width. Compared to traditional free width spread control methods in flat roll rolling, this method can increase the width spread from the traditional 30mm-40mm to 100-120mm, with width accuracy controllable within 0mm-3mm. Patent CN103056161A discloses a hot rolling apparatus and its rolling method for hot rolling copper and copper alloy strip billets. The hot rolling apparatus includes edge rolling rolls installed inside a frame, with a pinch roll cylinder enabling rapid opening and closing. A motor drives the edge rolling rolls via a reducer and coupling. A rolling cylinder is connected to an edge rolling roll bearing seat, and the rolling force provided by the cylinder is applied to the rolls through the bearing seat. Stable rolling is achieved through the cylinder. The hot rolling apparatus is symmetrically arranged at the inlet and outlet of the hot rolling mill, respectively rolling the edges of the hot-rolled ingots. This edge rolling process, based on the specific amount of free width expansion in each hot rolling pass, reduces the ingot's entry width before each pass by rolling the edge rolls, thereby reducing the rolled-out width. Through repeated rolling with the edge rolls, the rolled-out width is controlled pass by pass, ultimately achieving controlled hot-rolled width. In summary, the published patents concerning free-width rolling mainly involve research on the free-width rolling of sheet and strip materials and width control, and do not involve patents on methods and devices for free-width rolling of H-beams in the height direction. Summary of the Invention
[0005] The technical problem to be solved by this invention is to provide a structure that, in view of the shortcomings of the prior art, enables free widening rolling in the height direction after the universal roughing of hot-rolled H-beams, and at the same time enables widening of the inner width of the H-beams. This changes the traditional rolling process where the inner width of the same set of rolls remains unchanged during hot rolling of H-beams, and allows for the adjustment of the inner width of H-beams rolled into a series of H-beams with different widths under a certain widening amount.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention relates to an adjustment structure for the inner width of H-beams during rolling. The adjustment components include a first adjustment component and a second adjustment component, which are symmetrically arranged. The upper part of the bearing seat on the adjustment component is movably connected to the upper part of the frame via an upper column end, and the lower part of the bearing seat is movably connected to the lower part of the frame via a lower column end. The bearing seat and the frame are connected by a rotary hydraulic cylinder. An eccentric sleeve is fitted on the outer ring of the roller shaft, and the eccentric sleeve is mounted on the bearing seat. A worm gear is provided on the outer ring of the eccentric sleeve, and the worm gear meshes with a worm shaft, which is connected to a motor. The frame is movably connected to a ground rail, and the frame 15 is connected to an opening and closing hydraulic cylinder. The roller shaft and the horizontal line form an acute angle.
[0007] The first adjusting component has an upper roller shaft on the upper part of the bearing seat, with an upper roller sleeve fixedly connected to the outer end of the upper roller shaft. The first adjusting component has a lower roller shaft on the lower part of the bearing seat, with a lower roller sleeve fixedly connected to the outer end of the lower roller shaft. The upper roller shaft and the lower roller shaft form an acute angle with the horizontal line. The horizontal height of the end of the upper roller shaft of the first adjusting component where the upper roller sleeve is installed is lower than the horizontal height of the end where the upper roller sleeve is not installed. The horizontal height of the end of the lower roller shaft of the first adjusting component where the lower roller sleeve is installed is higher than the horizontal height of the end where the lower roller sleeve is not installed.
[0008] The upper part of the bearing seat of the second adjusting component is provided with an upper roller shaft, and the outer end of the upper roller shaft is fixedly connected to an upper roller sleeve. The lower part of the bearing seat of the second adjusting component is provided with a lower roller shaft, and the outer end of the lower roller shaft is fixedly connected to a lower roller sleeve. The upper roller shaft and the lower roller shaft are respectively at acute angles to the horizontal line. The horizontal height of the end of the upper roller shaft of the second adjusting component where the upper roller sleeve is installed is lower than the horizontal height of the end where the upper roller sleeve is not installed. The horizontal height of the end of the lower roller shaft of the second adjusting component where the lower roller sleeve is installed is higher than the horizontal height of the end where the lower roller sleeve is not installed.
[0009] The upper roller shaft of the first adjusting component is connected to a first upper roller shaft drive motor via a universal joint, and the lower roller shaft of the first adjusting component is connected to a first lower roller shaft drive motor via a universal joint. The first upper roller shaft drive motor and the first lower roller shaft drive motor are mounted on the frame. The upper roller shaft of the second adjusting component is connected to a second upper roller shaft drive motor via a universal joint, and the lower roller shaft of the second adjusting component is connected to a second lower roller shaft drive motor via a universal joint. The second upper roller shaft drive motor and the second lower roller shaft drive motor are mounted on the frame.
[0010] A bearing is provided between the roller shaft and the eccentric sleeve.
[0011] One rotary hydraulic cylinder of the first adjusting component connects the frame and the bearing seat from one side, and the other rotary hydraulic cylinder of the first adjusting component connects the frame and the bearing seat from the other side; one rotary hydraulic cylinder of the second adjusting component connects the frame and the bearing seat from one side, and the other rotary hydraulic cylinder of the first adjusting component connects the frame and the bearing seat from the other side.
[0012] The worm gear of the eccentric sleeve of the upper roller shaft of the first adjusting component is engaged with a worm, and the worm is connected to an upper motor; the worm gear of the eccentric sleeve of the lower roller shaft of the first adjusting component is engaged with a worm, and the worm is connected to a lower motor; the worm gear of the eccentric sleeve of the upper roller shaft of the second adjusting component is engaged with a worm, and the worm is connected to an upper motor; the worm gear of the eccentric sleeve of the lower roller shaft of the second adjusting component is engaged with a worm, and the worm is connected to a lower motor.
[0013] The outer surfaces of the upper and lower roller sleeves of the first adjusting component form an obtuse angle, and the inner surfaces of the upper and lower roller sleeves of the first adjusting component form an obtuse angle. The outer surfaces of the upper and lower roller sleeves of the second adjusting component form an obtuse angle, and the inner surfaces of the upper and lower roller sleeves of the second adjusting component form an obtuse angle.
[0014] The frame includes a gate and a gate cover. The gate has an L-shaped structure. One end of the cover plate is fixedly connected to the upper part of the gate. The upper part of the bearing seat of the first adjusting component is movably connected to the upper part of the cover plate through the upper column end, and the lower part of the bearing seat is movably connected to the lower part of the gate through the lower column end. The upper part of the bearing seat of the second adjusting component is movably connected to the upper part of the cover plate through the upper column end, and the lower part of the bearing seat is movably connected to the lower part of the gate through the lower column end.
[0015] The opening and closing hydraulic cylinder is fixed on the opening and closing hydraulic cylinder base.
[0016] This invention also relates to an adjustment structure for the inner width of H-beams, which enables free widening rolling in the height direction after the universal roughing of hot-rolled H-beams. Simultaneously, it allows for widening of the inner width of the H-beams, changing the traditional rolling process where the inner width of the same set of rolls remains constant during hot rolling of H-beams. This invention provides a method for adjusting the inner width of H-beam rolls in a rolling mill to produce a series of H-beam products with different widths using the same set of rolls, with a certain widening amount.
[0017] S1. The upper motor drives the worm gear and turbine to work, which drives the eccentric sleeve to rotate. The eccentric sleeve then drives the upper roller shaft to rotate, thus realizing the rotation of the upper roller sleeve and achieving radial up and down movement of the upper roller sleeve. The lower motor drives the worm gear and turbine to work, which drives the eccentric sleeve to rotate. The eccentric sleeve then drives the lower roller shaft to rotate, thus realizing the rotation of the lower roller sleeve and achieving radial up and down movement of the lower roller sleeve. The upper and lower roller sleeves work together to achieve the purpose of adjusting the roller gap. S2. A rotary hydraulic cylinder connects the archway and the bearing seat. One rotary hydraulic cylinder is arranged on each side of the archway on the bearing seat. The two cylinders work together to extend and retract, driving the bearing seat to rotate. S3. The archway of the frame is movably connected to the ground rail. Each archway is connected to an opening and closing hydraulic cylinder. The opening and closing hydraulic cylinders of the first and second adjusting components extend and retract, causing the roller sleeves of the first and second adjusting components to move closer or further away.
[0018] The working principle and beneficial effects of the technical solution adopted in this invention are as follows: The H-beam rolling inner width adjustment structure of this invention includes a first adjustment component and a second adjustment component, symmetrically arranged. A roller is mounted on one side of the first adjustment component, and a roller (including a roller shaft and a roller sleeve) is mounted on one side of the second adjustment component. The rollers on both sides cooperate to complete the rolling of the workpiece. The upper part of the bearing seat on the adjustment component is movably connected to the upper part of the frame via an upper column end, and the lower part of the bearing seat is movably connected to the lower part of the frame via a lower column end. The bearing seat and the frame are connected by a rotary hydraulic cylinder. Thus, when the rotary hydraulic cylinder extends or retracts, it drives the bearing seat to rotate, thereby rotating the roller shaft on the bearing seat and adjusting the tilt angle of the roller sleeve. An eccentric sleeve is fitted around the outer ring of the roller shaft, and the eccentric sleeve is mounted on the bearing seat. A worm gear is mounted on the outer ring of the eccentric sleeve, meshing with a worm, which is connected to a motor. The motor rotation drives the worm gear, which in turn drives the worm gear, which in turn drives the eccentric sleeve to rotate. This rotation of the eccentric sleeve changes the horizontal height of the roller shaft, thus adjusting the horizontal height of the roller sleeve. The frame is movably connected to the ground rail, and the frame is connected to an opening and closing hydraulic cylinder. The opening and closing hydraulic cylinder extends and retracts, driving the frame to move along the ground rail, thereby adjusting the horizontal position of the roll sleeve. The above-mentioned adjustments to the roll sleeve tilt angle, roll sleeve horizontal height, and roll sleeve horizontal position are all small-range adjustments to meet the rolling requirements of different types of H-beams. The purpose of this invention is to enable free widening rolling in the height direction after the universal roughing rolling of hot-rolled H-beams, allowing for the widening of the inner width. This changes the traditional rolling process where the inner width of the same set of rolls remains constant during hot rolling of H-beams. With a certain widening amount, it allows for the production of a series of products with different widths using the same set of rolls, reducing roll reserves and consumption, as well as roll changing time. It enables more diversified production on a single production line, providing equipment support for the simultaneous production of hot-rolled H-beams of different national standards, and contributing to improved production efficiency and cost reduction. Attached Figure Description
[0019] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein: Figure 1 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 2 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 3 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 4 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 5 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 6 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; Figure 7 This is a schematic diagram of the structure for adjusting the inner width of H-beams during rolling according to the present invention; The labels in the attached diagram are as follows: 1: Upper clamping hydraulic cylinder, 2: Cover plate, 3: Roller sleeve, 4: Roller shaft, 5: Bearing spacer, 6: Eccentric sleeve, 7: Front bearing cover, 8: Bearing, 9: Bearing seat, 10: Lower steel sleeve, 11: Lower steel sleeve cover, 12: Locking bolt, 13: Upper steel sleeve cover, 14: Upper steel sleeve, 15: Archway, 16: Cover, 19: Turbine, 22: Worm gear, 23: Motor, 24: Rotary hydraulic cylinder, 25: First connecting pin, 26: Ground rail, 27: Second connecting pin, 28: Opening and closing hydraulic cylinder, 29: Opening and closing hydraulic cylinder base, 31: Upper column end, 32: Lower column end, 33: Upper roller shaft, 34: Upper roller sleeve, 35: Lower roller shaft, 36: Lower roller sleeve, 37: Frame, 38: Universal joint. Detailed Implementation
[0020] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part: As attached Figure 1 -Appendix Figure 7As shown, this invention provides an adjustment structure for the inner width of rolled H-beams. The adjustment components include a first adjustment component and a second adjustment component, which are symmetrically arranged. The upper part of the bearing seat 9 on the adjustment component is movably connected to the upper part of the frame 37 via an upper column end 31, and the lower part of the bearing seat 9 is movably connected to the lower part of the frame 37 via a lower column end 32. The bearing seat 9 and the frame 37 are connected by a rotary hydraulic cylinder 24. An eccentric sleeve 6 is fitted around the outer ring of the roller shaft 4 and is mounted on the bearing seat 9. A worm gear 19 is provided on the outer ring of the eccentric sleeve 6, which meshes with a worm 22. The worm 22 is connected to a motor 23. The frame 37 is movably connected to a ground rail 26, and the frame 15 is connected to an opening and closing hydraulic cylinder 28. The roller shaft 4 forms an acute angle with the horizontal line. This structure addresses the shortcomings of the prior art and proposes an improved technical solution. In the structural configuration, the adjustment components include a first adjustment component and a second adjustment component, which are arranged symmetrically. A roller is mounted on one side of the first adjustment component, and a roller (including a roller shaft and a roller sleeve) is mounted on one side of the second adjustment component. The rollers on both sides cooperate to complete the rolling of the workpiece. The upper part of the bearing seat 9 on the adjustment component is movably connected to the upper part of the frame 37 via the upper column end 31, and the lower part of the bearing seat 9 is movably connected to the lower part of the frame 37 via the lower column end 32. The bearing seat 9 and the frame 37 are connected by a rotary hydraulic cylinder 24. Thus, when the rotary hydraulic cylinder 24 extends or retracts, it drives the bearing seat 9 to rotate. The rotation of the bearing seat 9 realizes the rotation of the roller shaft 4 on the bearing seat 9, simultaneously adjusting the tilt angle of the roller sleeve 3. An eccentric sleeve 6 is fitted around the outer ring of roller 4. The eccentric sleeve 6 is mounted on bearing housing 9. A worm gear 19 is installed around the outer ring of the eccentric sleeve 6. The worm gear 19 meshes with a worm 22, which is connected to a motor 23. The motor's rotation drives the worm gear, which in turn drives the worm gear 19. The worm gear 19 then drives the eccentric sleeve 6 to rotate, thus changing the horizontal height of roller 4, and consequently adjusting the horizontal height of roller sleeve 3. A frame 37 is movably connected to a ground rail 26 and is connected to an opening / closing hydraulic cylinder 28. The extension and retraction of the opening / closing hydraulic cylinder 28 moves the frame 37 along the ground rail, adjusting the horizontal position of the roller sleeve. The adjustments to the tilt angle, horizontal height, and horizontal position of roller sleeve 3 are all small-range adjustments to meet the requirements of rolling different types of H-beams. In summary, the improved structure for adjusting the inner width of H-beams in this invention aims to enable free widening rolling in the height direction after the universal roughing of hot-rolled H-beams. This widens the inner width, changing the traditional rolling process where the inner width of the same set of rolls remains constant during hot rolling of H-beams. With a certain widening amount, different width series of products can be rolled from the same set of rolls, reducing roll reserves and consumption, as well as roll changing time. This allows for more diversified production on a single production line, providing equipment support for the simultaneous production of hot-rolled H-beams of different national standards, and contributing to improved production efficiency and cost reduction.
[0021] The bearing seat 9 of the first adjusting component is provided with an upper roller shaft 33 on the upper part, and an upper roller sleeve 34 is fixedly connected to the outer end of the upper roller shaft 33. The bearing seat 9 of the first adjusting component is provided with a lower roller shaft 35 on the lower part, and a lower roller sleeve 36 is fixedly connected to the outer end of the lower roller shaft 35. The upper roller shaft 33 and the lower roller shaft 35 are respectively at acute angles to the horizontal line. The horizontal height of the end of the upper roller shaft 33 of the first adjusting component that is equipped with the upper roller sleeve 34 is lower than the horizontal height of the end that is not equipped with the upper roller sleeve 34. The horizontal height of the end of the lower roller shaft 35 of the first adjusting component that is equipped with the lower roller sleeve 36 is higher than the horizontal height of the end that is not equipped with the lower roller sleeve 36. The upper part of the bearing seat 9 of the second adjusting component is provided with an upper roller shaft 33, and the outer end of the upper roller shaft 33 is fixedly connected to an upper roller sleeve 34. The lower part of the bearing seat 9 of the second adjusting component is provided with a lower roller shaft 35, and the outer end of the lower roller shaft 35 is fixedly connected to a lower roller sleeve 36. The upper roller shaft 33 and the lower roller shaft 35 form an acute angle with the horizontal line respectively. The horizontal height of the end of the upper roller shaft 33 of the second adjusting component that is equipped with the upper roller sleeve 34 is lower than the horizontal height of the end that is not equipped with the upper roller sleeve 34. The horizontal height of the end of the lower roller shaft 35 of the second adjusting component that is equipped with the lower roller sleeve 36 is higher than the horizontal height of the end that is not equipped with the lower roller sleeve 36.
[0022] The upper roller shaft 33 of the first adjusting component is connected to a first upper roller shaft drive motor via a universal joint 38, and the lower roller shaft 35 of the first adjusting component is connected to a first lower roller shaft drive motor via a universal joint. The first upper roller shaft drive motor and the first lower roller shaft drive motor are mounted on the frame 37. With this structure, when the first upper roller shaft drive motor and the first lower roller shaft drive motor rotate, they can respectively drive the upper roller shaft 33 and the lower roller shaft 35 to rotate, thereby achieving rotational drive of the corresponding roller sleeves.
[0023] The upper roller shaft 33 of the second adjusting component is connected to a second upper roller shaft drive motor via a universal joint, and the lower roller shaft 35 of the second adjusting component is connected to a second lower roller shaft drive motor via a universal joint. The second upper roller shaft drive motor and the second lower roller shaft drive motor are mounted on the frame 37. With this structure, when the second upper roller shaft drive motor and the second lower roller shaft drive motor rotate, they can respectively drive the upper roller shaft 33 and the lower roller shaft 35 to rotate, thereby achieving rotational drive of the corresponding roller sleeves.
[0024] A bearing 8 is provided between the roller shaft 4 and the eccentric sleeve 6. In the above structure, the bearing 8 serves as a movable connection between the roller shaft 4 and the eccentric sleeve 6, and a double-row cylindrical roller bearing can be selected.
[0025] The first adjusting component has one rotating hydraulic cylinder 24 connected to the frame 15 and bearing seat 9 from one side, and another rotating hydraulic cylinder 24 connected to the frame 15 and bearing seat 9 from the other side. Similarly, the second adjusting component has one rotating hydraulic cylinder 24 connected to the frame 15 and bearing seat 9 from one side, and another rotating hydraulic cylinder 24 connected to the frame 15 and bearing seat 9 from the other side. In this structure, the bearing seat 9 rests entirely on the frame 15. The lower side of the bearing seat 9 is designed in a disc shape. The rotating hydraulic cylinders 24 are connected to the frame 15 and bearing seat 9 respectively via pins. One rotating hydraulic cylinder 24 is arranged on each side of the bearing seat 9, working in tandem, one extending and the other retracting, driving the bearing 9 to rotate ±5°, thus driving the roll to rotate together. During initial installation of the mill, the bearing seat 9 is installed at a 5° angle to the rolling direction, achieving an angle of 0° to 10° with the rolling direction. The bearing seat 9 rotates only 5° in one direction, which facilitates the selection of the universal coupling between the roll shaft and the motor, reducing transmission speed differences. The rotary hydraulic cylinder 24 is movably connected to the archway 15 of the frame 37 via the first connecting pin 25.
[0026] The worm gear 19 of the eccentric sleeve 6 of the upper roller shaft 33 of the first adjusting component engages with the worm 22, and the worm 22 is connected to an upper motor; the rotation of the upper motor drives the worm to rotate. Similarly, the worm gear 22 of the eccentric sleeve 6 of the lower roller shaft 35 of the first adjusting component engages with the worm 22, and the worm 22 is connected to a lower motor; the rotation of the lower motor drives the worm to rotate. Likewise, the worm gear 19 of the eccentric sleeve 6 of the upper roller shaft 33 of the second adjusting component engages with the worm 22, and the worm 22 is connected to an upper motor; the rotation of the upper motor drives the worm to rotate. The worm gear 19 of the eccentric sleeve 6 meshes with the worm 22, which is connected to the lower motor. The rotation of the lower motor drives the worm to rotate. The outer surfaces of the upper roller sleeve 34 and the lower roller sleeve 36 of the first adjusting component form an obtuse angle. The inner surfaces of the upper roller sleeve 34 and the lower roller sleeve 36 of the first adjusting component also form an obtuse angle. The outer surfaces of the upper roller sleeve 34 and the lower roller sleeve 36 of the second adjusting component also form an obtuse angle. The inner surfaces of the upper roller sleeve 34 and the lower roller sleeve 36 of the second adjusting component also form an obtuse angle.
[0027] The frame 37 includes a gate 15 and a gate cover 3. The gate 15 has an L-shaped structure. One end of the cover 3 is fixedly connected to the upper part of the gate 15. The gate 15 and the gate cover 3 are fixedly connected by locking bolts 12. The upper part of the bearing seat 9 of the first adjusting component is movably connected to the upper part of the cover 3 via the upper column end 31, and the lower part of the bearing seat 9 is movably connected to the lower part of the gate 15 via the lower column end 32. The upper part of the bearing seat 9 of the second adjusting component is movably connected to the upper part of the cover 3 via the upper column end 31, and the lower part of the bearing seat 9 is movably connected to the lower part of the gate 15 via the lower column end 32. A steel sleeve 14 is fitted on the outer ring of the upper column end 31 to improve wear resistance. An upper steel sleeve cover 13 is fixedly installed on the upper end of the upper column end 31 to provide upper limit. A lower steel sleeve 10 is fitted on the outer ring of the lower column end 32 to improve wear resistance. A lower steel sleeve cover 11 is fixedly installed on the lower end of the lower column end 32 to provide lower limit.
[0028] The opening and closing hydraulic cylinder 28 is fixed on the opening and closing hydraulic cylinder base 29. In this structure, the opening and closing hydraulic cylinder base 29 is used to fix one end of the opening and closing hydraulic cylinder 28, achieving a fixed connection of the hydraulic cylinder body. The opening and closing hydraulic cylinder 28 is movably connected to the archway 15 of the frame 37 via a second connecting pin 27.
[0029] This invention also relates to an adjustment structure for the inner width of H-beams, which enables free widening rolling in the height direction after the universal roughing of hot-rolled H-beams. Simultaneously, it allows for widening of the inner width of the H-beams, changing the traditional rolling process where the inner width of the same set of rolls remains constant during hot rolling of H-beams. This invention provides a method for adjusting the inner width of H-beam rolls in a rolling mill to produce a series of H-beam products with different widths using the same set of rolls, with a certain widening amount.
[0030] S1. The upper motor drives the worm gear 22 and worm wheel 19 to work, which in turn drives the eccentric sleeve 6 to rotate. The eccentric sleeve 6 then drives the upper roller shaft 33 to rotate, thus rotating the upper roller sleeve 34 and achieving radial up-and-down movement of the upper roller sleeve 34. The lower motor drives the worm gear 22 and worm wheel 19 to work, which in turn drives the eccentric sleeve 6 to rotate. The eccentric sleeve 6 then drives the lower roller shaft 35 to rotate, thus rotating the lower roller sleeve 36 and achieving radial up-and-down movement of the lower roller sleeve 36. The upper roller sleeve 34 and the lower roller sleeve 36 work together to achieve the purpose of adjusting the roller gap; S2. Rotary hydraulic cylinder 24 is connected The archway 15 and bearing seat 9 are connected by two rotating hydraulic cylinders 24, one on each side of the archway 15 on the bearing seat 9. The two rotating hydraulic cylinders 24 work together to drive the bearing seat 9 to rotate. The archway 15 of the frame 37 is movably connected to the ground rail 26. Each archway 15 is connected to an opening and closing hydraulic cylinder 28. The opening and closing hydraulic cylinders 28 of the first adjustment component and the second adjustment component extend and retract to drive the roller sleeve 3 of the first adjustment component to move closer to or away from the roller sleeve 3 of the second adjustment component.
[0031] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.
Claims
1. An adjustment structure for the inner width of H-beams during rolling, characterized in that: The adjustment components include a first adjustment component and a second adjustment component, which are arranged symmetrically. The upper part of the bearing seat (9) on the adjustment component is movably connected to the upper part of the frame (37) through the upper column end (31), and the lower part of the bearing seat (9) is movably connected to the lower part of the frame (37) through the lower column end (32). The bearing seat (9) and the frame (37) are connected by a rotary hydraulic cylinder (24). The outer ring of the roller (4) is fitted with an eccentric sleeve (6), which is installed on the bearing seat (9). The outer ring of the eccentric sleeve (6) is provided with a turbine (19), which meshes with a worm gear (22). The worm gear (22) is connected to a motor (23). The frame (37) is movably connected to the ground rail (26), and the frame (15) is connected to an opening and closing hydraulic cylinder (28). The roller (4) and the horizontal line form an acute angle.
2. The adjustment structure for the inner width of H-beam rolling according to claim 1, characterized in that: The bearing seat (9) of the first adjusting component is provided with an upper roller shaft (33) on the upper part, and an upper roller sleeve (34) is fixedly connected to the outer end of the upper roller shaft (33). The bearing seat (9) of the first adjusting component is provided with a lower roller shaft (35) on the lower part, and a lower roller sleeve (36) is fixedly connected to the outer end of the lower roller shaft (35). The upper roller shaft (33) and the lower roller shaft (35) are respectively at an acute angle to the horizontal line. The horizontal height of the end of the upper roller shaft (33) of the first adjusting component with the upper roller sleeve (34) installed is lower than the horizontal height of the end without the upper roller sleeve (34) installed. The horizontal height of the end of the lower roller shaft (35) of the first adjusting component with the lower roller sleeve (36) installed is higher than the horizontal height of the end without the lower roller sleeve (36) installed.
3. The adjustment structure for the inner width of H-beam rolling according to claim 2, characterized in that: The upper part of the bearing seat (9) of the second adjustment component is provided with an upper roller shaft (33), and the outer end of the upper roller shaft (33) is fixedly connected to an upper roller sleeve (34). The lower part of the bearing seat (9) of the second adjustment component is provided with a lower roller shaft (35), and the outer end of the lower roller shaft (35) is fixedly connected to a lower roller sleeve (36). The upper roller shaft (33) and the lower roller shaft (35) are respectively at an acute angle to the horizontal line. The horizontal height of the end of the upper roller shaft (33) of the second adjustment component with the upper roller sleeve (34) installed is lower than the horizontal height of the end without the upper roller sleeve (34) installed. The horizontal height of the end of the lower roller shaft (35) of the second adjustment component with the lower roller sleeve (36) installed is higher than the horizontal height of the end without the lower roller sleeve (36) installed.
4. The adjustment structure for the inner width of H-beam rolling according to claim 3, characterized in that: The upper roller shaft (33) of the first adjusting component is connected to the first upper roller shaft drive motor via a universal joint, and the lower roller shaft (35) of the first adjusting component is connected to the first lower roller shaft drive motor via a universal joint. The first upper roller shaft drive motor and the first lower roller shaft drive motor are mounted on the frame (37). The upper roller shaft (33) of the second adjusting component is connected to the second upper roller shaft drive motor via a universal joint, and the lower roller shaft (35) of the second adjusting component is connected to the second lower roller shaft drive motor via a universal joint. The second upper roller shaft drive motor and the second lower roller shaft drive motor are mounted on the frame (37).
5. The adjustment structure for the inner width of H-beam rolling according to claim 1 or 2, characterized in that: A bearing (8) is provided between the roller (4) and the eccentric sleeve (6).
6. The adjustment structure for the inner width of H-beam rolling according to claim 3, characterized in that: One of the rotary hydraulic cylinders (24) of the first adjusting component is connected to the frame (15) and the bearing seat (9) from one side, and the other rotary hydraulic cylinder (24) of the first adjusting component is connected to the frame (15) and the bearing seat (9) from the other side; one of the rotary hydraulic cylinders (24) of the second adjusting component is connected to the frame (15) and the bearing seat (9) from one side, and the other rotary hydraulic cylinder (24) of the first adjusting component is connected to the frame (15) and the bearing seat (9) from the other side.
7. The adjustment structure for the inner width of H-beam rolling according to claim 3, characterized in that: The worm gear (19) of the eccentric sleeve (6) of the upper roller shaft (33) of the first adjusting component engages with the worm (22), and the worm (22) is connected to the upper motor; the worm gear (19) of the eccentric sleeve (6) of the lower roller shaft (35) of the first adjusting component engages with the worm (22), and the worm (22) is connected to the lower motor; the worm gear (19) of the eccentric sleeve (6) of the upper roller shaft (33) of the second adjusting component engages with the worm (22), and the worm (22) is connected to the upper motor; the worm gear (19) of the eccentric sleeve (6) of the lower roller shaft (35) of the second adjusting component engages with the worm (22), and the worm (22) is connected to the lower motor.
8. The adjustment structure for the inner width of H-beam rolling according to claim 3, characterized in that: The outer surface of the upper roller sleeve (34) and the outer surface of the lower roller sleeve (36) of the first adjusting component are at an obtuse angle. The inner surface of the upper roller sleeve (34) and the inner surface of the lower roller sleeve (36) of the first adjusting component are at an obtuse angle. The outer surface of the upper roller sleeve (34) and the outer surface of the lower roller sleeve (36) of the second adjusting component are at an obtuse angle. The inner surface of the upper roller sleeve (34) and the inner surface of the lower roller sleeve (36) of the second adjusting component are at an obtuse angle.
9. The adjustment structure for the inner width of H-beam rolling according to claim 3, characterized in that: The frame (37) includes a gate (15) and a gate cover (3). The gate (15) has an L-shaped structure. One end of the cover plate (3) is fixedly connected to the upper part of the gate (15). The upper part of the bearing seat (9) of the first adjusting component is movably connected to the upper part of the cover plate (3) through the upper column end (31), and the lower part of the bearing seat (9) is movably connected to the lower part of the gate (15) through the lower column end (32). The upper part of the bearing seat (9) of the second adjusting component is movably connected to the upper part of the cover plate (3) through the upper column end (31), and the lower part of the bearing seat (9) is movably connected to the lower part of the gate (15) through the lower column end (32).
10. The method for adjusting the inner width of the rolls in the H-beam rolling inner width adjustment structure according to any one of claims 1 to 9, characterized in that: S1. The upper motor drives the worm (22) and turbine (19) to work, which drives the eccentric sleeve (6) to rotate. The eccentric sleeve (6) then drives the upper roller shaft (33) to rotate, thereby realizing the rotation of the upper roller sleeve (34) and thus realizing the radial up and down movement of the upper roller sleeve (34). The lower motor drives the worm (22) and turbine (19) to work, which drives the eccentric sleeve (6) to rotate. The eccentric sleeve (6) then drives the lower roller shaft (35) to rotate, thereby realizing the rotation of the lower roller sleeve (36) and thus realizing the radial up and down movement of the lower roller sleeve (36). The upper roller sleeve (34) and the lower roller sleeve (36) work together to achieve the purpose of adjusting the roller gap. S2. A rotary hydraulic cylinder (24) connects the archway (15) and the bearing seat (9). One rotary hydraulic cylinder (24) is arranged on each side of the archway (15) of the bearing seat (9). The two are used in conjunction. The two rotary hydraulic cylinders (24) extend and retract to drive the bearing seat (9) to rotate. S3. The archway (15) of the frame (37) is movably connected to the ground rail (26). Each archway (15) is connected to an opening and closing hydraulic cylinder (28). The opening and closing hydraulic cylinder (28) of the first adjustment component and the opening and closing hydraulic cylinder (28) of the second adjustment component extend and retract, causing the roller sleeve (3) of the first adjustment component and the roller sleeve (3) of the second adjustment component to move closer or further away.