Intelligent continuous accurate straightening device and method for multi-specification hot steel billets

Abstract

The invention discloses an intelligent continuous accurate straightening device and method for multi-specification hot billets. Fixed bases are symmetrically arranged on the two sides of a roller way; a roller bed base is connected between the two fixed bases; a free roller system and a free roller hydraulic cylinder are arranged on the fixed base on one side in a sliding mode, and the free roller hydraulic cylinder is arranged on the side far away from the roller way and used for driving the free roller system to move perpendicular to the roller way. A driving roller system and a driving roller hydraulic cylinder are arranged on the fixed base on the other side in a sliding mode, and the driving roller hydraulic cylinder is arranged on the side far away from the roller way and used for driving the driving roller system to move perpendicular to the roller way. The free roller system is adopted, the driving rollers are locked through the locking cylinders, manual operation is not needed, and therefore the labor intensity of workers is effectively reduced, and meanwhile the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to an intelligent continuous and precise straightening device and method for hot steel billets with multiple specifications. Background Art

[0002] In order to adapt to the trend of green and low-carbon development, the steel industry must do its best to recycle heat energy and reduce energy consumption and pollutant emissions. Hot delivery and hot loading of continuous casting and rolling processes and direct rolling technology have become the inevitable choice for steel companies. In the hot delivery process, the continuous casting billet is very likely to have excessive side bending, which makes it impossible to enter the heating furnace or induction heating device.

[0003] The intelligent continuous and precise straightening device for hot steel billets of various specifications is arranged at the door of the heating furnace and the entrance of the induction heating device. It implements online continuous straightening of the hot steel billets to make their side curvature meet the standard requirements, thereby effectively reducing the scrap rate.

[0004] In the existing hot billet straightening device design, there are also different types of devices; for example: China Invention Patent, Application Number: 202011376713.X, Application Date: November 30, 2020, discloses a vertical hot billet online straightening machine, whose technical features are: it includes N groups of transmission roller system units, N-1 groups or N+1 groups of mobile roller system units, M conveying roller units, and an integrated frame. The transmission roller system unit and the mobile roller system unit are alternately installed on both sides of the conveying roller unit; the straightening rollers in the transmission roller system unit are arranged vertically, and the transmission system in the transmission roller system unit is arranged below the straightening rollers. The combined action of the transmission roller system unit and the mobile roller system unit in this invention patent performs online straightening of the hot billet.

[0005] However, the patent has the following shortcomings:

[0006] 1) The moving roller system unit is locked by manually tightening the locking bolts, and multiple locking bolts are arranged on the top and side surfaces of the guide unit. When switching between the "empty pass" mode and the straightening mode and adjusting the openings of hot steel billets of different sizes, the locking bolts need to be loosened and tightened manually. The whole process not only increases the labor intensity of the workers, but also affects the rhythm of entering the furnace.

[0007] 2) The transmission system is arranged under the straightening roller, resulting in a large distance between the transmission system and the conveying roller surface. A deep pit needs to be set up here for civil engineering. Not only is the workload of civil engineering large, but also for renovation projects, there are often electrical rooms, hydraulic stations or other public auxiliary facilities under the platform in this area. This structural form is not suitable for renovation projects in such situations.

[0008] 3) The transmission system is arranged below the straightening roller, which is inconvenient for maintenance and replacement. Summary of the invention

[0009] In view of the above problems, the purpose of the present invention is to provide an intelligent continuous and precise straightening device and method for hot steel billets of multiple specifications, so as to solve the problems that the transmission system is arranged below the straightening roller and is not suitable for the transformation project, and the opening adjustment of the straightening machine in the actual production process cannot be achieved automatically, resulting in high labor intensity and low work efficiency.

[0010] In order to achieve the above-mentioned object, the intelligent continuous and precise straightening device for hot steel billets of multiple specifications of the present invention comprises:

[0011] Fixed bases are symmetrically arranged on both sides of the roller table; a roller table base is connected and arranged between the two fixed bases;

[0012] A free roller system and a free roller hydraulic cylinder are slidably arranged on a fixed base at one side. The free roller hydraulic cylinder is arranged on the far side of the roller table and is used to drive the free roller system to move perpendicularly to the roller table.

[0013] A driving roller system and a driving roller hydraulic cylinder are slidably arranged on the fixed base on the other side. The driving roller hydraulic cylinder is arranged on the far side of the roller table and is used to drive the driving roller system to move perpendicularly to the roller table.

[0014] Furthermore, the free roller system comprises a free roller movable base; a driven straightening roller is vertically arranged on a side of the free roller movable base close to the roller table;

[0015] The bottom two sides of the free roller movable base are horizontally provided with slide grooves; the slide grooves on the two sides are provided with slide rails on the corresponding fixed base corresponding to the slide grooves; the slide grooves on the two sides of the free roller movable base are slidably provided on the slide rails.

[0016] Furthermore, the driving roller system comprises a driving roller movable base; an active straightening roller is vertically arranged on the side of the driving roller movable base close to the roller path; a driving device is arranged on the driving roller movable base, and the active straightening roller is drivingly connected to the driving device;

[0017] The bottom two sides of the driving roller movable base are horizontally provided with slide grooves; the corresponding two side slide grooves are provided with slide rails on the corresponding fixed base; the slide grooves on the two sides of the driving roller movable base are slidably arranged on the slide rails.

[0018] Furthermore, the slide groove is an inverted U-shaped member composed of an upper angle plate with an inverted L-shaped cross-section and a pressure plate, and a sliding plate is arranged on the inner surface of the slide groove.

[0019] Furthermore, the upper corner of the upper corner plate of the slide groove near the slide rail is a wedge-shaped surface; a locking cylinder is provided on the fixed base corresponding to the wedge-shaped surface of the upper corner plate, and a wedge-shaped locking tongue adapted to the wedge-shaped surface is provided at the free end of the locking cylinder.

[0020] Furthermore, the driving device is a reduction motor, and the reduction motor is installed on the driving roller moving base through a bracket; the output shaft coupling of the reduction motor is connected to the shaft of the active straightening roller.

[0021] Furthermore, the hydraulic cylinder is provided with a displacement sensor.

[0022] Furthermore, the slide plate is a wear-resistant plate.

[0023] Furthermore, the locking tongue is made of wear-resistant material; the locking tongue is connected to the piston rod through a bolt.

[0024] To achieve the above object, the intelligent continuous and precise straightening method for hot steel billets of multiple specifications of the present invention is based on the intelligent continuous and precise straightening device for hot steel billets of multiple specifications described above, and comprises the following steps:

[0025] 1) The free roller system and the driving roller system are both in the initial position, that is, the hydraulic cylinder is in a retracted state and the locking cylinder is in an extended state;

[0026] 2) When the hot billet needs to be straightened, the locking cylinder retracts, and the hydraulic cylinder drives the free roller system and the driving roller system to approach the center line of the roller table at the same time; the different opening sizes are controlled according to the specification parameters of the hot billet fed back by the front-end continuous casting machine;

[0027] 3) After the opening degree adjustment is completed, the locking cylinder extends to fix the free roller system and the driving roller system on the fixed base;

[0028] 4) The reduction motor is started to drive the active straightening roller to rotate, thereby straightening the hot steel billet.

[0029] Compared with the prior art, the technical solution provided by the present invention has the following significant effects:

[0030] (1) The free roller system 1 and the driving roller system 3 used in the present invention are locked by the locking cylinder 403. The locking cylinder 403 is driven by hydraulic pressure and does not require manual operation, thereby effectively reducing the labor intensity of workers and improving work efficiency;

[0031] (2) The free roller movable base 101 and the driving roller movable base 301 used in the present invention are both equipped with the first slide plate 103, the second slide plate 104, and the third slide plate 105, and the slide plates are all made of wear-resistant materials. In actual use, not only the service life is improved, but also the production cost is effectively reduced;

[0032] (3) The reduction motor 302 used in the present invention is arranged above the straightening roller, which is convenient for maintenance and replacement. At the same time, the foundation elevation of the entire equipment is consistent with the bottom elevation of the roller stand, which is suitable for renovation projects and greatly reduces the difficulty and cost of implementing the renovation project;

[0033] The present invention includes a set of control programs that can intelligently adjust the opening size of the straightening roller when it is working according to the different specifications of the hot steel billet. The specification parameters of the hot steel billet can be obtained by feedback from the front-end continuous casting machine. The opening size of the straightening roller 102 can be intelligently and quickly controlled through the displacement sensor signal of the hydraulic cylinder 402. The whole process is unmanned, intelligent and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 AA cross-sectional view;

[0036] Figure 3 is a schematic diagram of a free roller system in an embodiment of the present invention;

[0037] Figure 4 yes Figure 3 K-direction view;

[0038] Figure 5 yes Figure 4 A partial enlarged schematic diagram of

[0039] Figure 6 is a schematic diagram of a driving roller system in an embodiment of the present invention;

[0040] Figure 7 yes Figure 6 BB section view;

[0041] Figure 8 is a schematic diagram of a fixed base in an embodiment of the present invention;

[0042] Fig. 9 8 is a cross-sectional schematic diagram along the CC direction;

[0043] Fig.10 yes Figure 1 FF section diagram.

[0044] In the figure: 1, free roller system 2, roller base 3, drive roller system 4, fixed base 5, pin 101, free roller movable base 102, straightening roller 103, first slide 104, second slide 105, third slide 106, pressure plate 301, drive roller movable base 302, reduction motor 303, bracket 304, coupling 401, hydraulic cylinder base 402, hydraulic cylinder 403, locking cylinder frame 404, fixed base 405, wear-resistant plate DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Example 1

[0050] Combination Figures 1 to 10, a multi-specification hot steel billet intelligent continuous precision straightening device of this embodiment includes a free roller system 1, a roller table base 2, a drive roller system 3, and a fixed base 4. The fixed base 4 is arranged on both sides of the roller table, and the free roller system 1 and the drive roller system 3 are both placed on the fixed base 4, connected to the hydraulic cylinder 302 on the fixed base 4 through a pin 5, and moved on the fixed base 4 through the action of the hydraulic cylinder 302. The free roller system 1 and the drive roller system 3 are symmetrically arranged along the center line of the roller table. The fixed base 4 is connected to the roller table base 2 by bolts.

[0051] The free roller system 1 comprises a free roller moving base 101, a straightening roller 102, a first slide plate 103, a second slide plate 104, a third slide plate 105, and a pressing plate 106. The straightening roller 102 is fixed to the free roller moving base 101 by bolts. The first slide plate 103 and the second slide plate 104 are respectively fixed to the bottom surface and the side surface of the free roller moving base 101 by screws, the pressing plate 106 is fixed to the free roller moving base 101 by bolts, and the third slide plate 105 is fixed to the pressing plate 106.

[0052] The driving roller system 3 includes a driving roller movable base 301, a reduction motor 302, a bracket 303, a coupling 304, a straightening roller 102, a first slide 103, a second slide 104, a third slide 105, and a pressing plate 106. The straightening roller 102 and the bracket 303 are both fixed to the driving roller movable base 301 by bolts. The reduction motor 302 is connected to the straightening roller 102 by the coupling 304, and the reduction motor 302 is fixed to the bracket 303. The first slide 103 and the second slide 104 are fixed to the bottom and side surfaces of the driving roller movable base 301 by screws, the pressing plate 106 is fixed to the driving roller movable base 301 by bolts, and the third slide 105 is fixed to the pressing plate 106.

[0053] The fixed base 4 includes a hydraulic cylinder base 401, a hydraulic cylinder 402, a locking cylinder 403, a fixed base 404, and a wear plate 405. The hydraulic cylinder 402 is fixed to the fixed base 404 through the hydraulic cylinder base 401, and the locking cylinder 403 is fixed to the fixed base 404 through bolts.

[0054] Example 2

[0055] Combination Figure 5 , Figure 7 , Fig. 9Description: The structure of the intelligent continuous precision straightening device for hot steel billets of multiple specifications in this embodiment is basically the same as that of the embodiment 1, except that the angle between the inclined surface D1 of the free roller movable base 101 and the inclined surface D2 of the driving roller movable base 301 and the horizontal direction is ∠α. The angle between the inclined surface E of the locking cylinder 403 and the horizontal direction is ∠β, and ∠α=∠β, preferably ∠α=∠β=25~30°.

[0056] Example 3

[0057] Combination Figure 5 , Figure 7 Description: The structure of the intelligent continuous precision straightening device for hot steel billets of multiple specifications in this embodiment is basically the same as that in embodiment 1, except that the first slide plate 103, the second slide plate 104, and the third slide plate 105 are all made of wear-resistant materials. The first slide plate 103, the second slide plate 104, and the third slide plate 105 are symmetrically arranged along the center line N.

[0058] Example 4

[0059] Combination Figure 6 Description: This embodiment is an intelligent continuous precision straightening device for hot steel billets of multiple specifications, and its structure is basically the same as that of Embodiment 1, except that: in order to reduce the heat radiation of the hot steel billets to the reduction motor 302, the reduction motor 302 uses a spiral bevel gear reducer and variable frequency speed regulation.

[0060] Example 5

[0061] Combination Figure 8 , Fig. 9 Description: The structure of the intelligent continuous precision straightening device for hot steel billets of multiple specifications in this embodiment is basically the same as that in embodiment 1, except that: the hydraulic cylinder 402 is provided with a displacement sensor, preferably a built-in sensor. The locking cylinders 403 are arranged symmetrically along the center line N, and multiple, preferably two, are arranged in the transverse direction. The locking cylinders 403 lock the free roller system 1 and the driving roller system 3. The head of the locking cylinder 403 is provided with a replaceable wear-resistant plate 405, and the wear-resistant plate 405 is connected to the piston rod by bolts.

[0062] Example 6

[0063] Combination Figure 1 , Figure 3 , Figure 6 , Figure 8 , Description, the intelligent continuous precision straightening device for hot steel billets of multiple specifications in this embodiment has a structure basically the same as that of embodiment 1, except that it also includes a control program that can intelligently adjust the opening size of the straightening rollers according to the different specifications of the hot steel billets. The specification parameters of the hot steel billets can be obtained by feedback from the front-end continuous casting machine. The implementation steps of the control program are:

[0064] Step 1: The free roller system 1 and the driving roller system 3 are both in the initial position, that is, the hydraulic cylinder 402 is in the retracted state, and the locking cylinder 403 is in the extended state;

[0065] Step 2: When the hot billet needs to be straightened, the front-end continuous casting machine feeds back the specification parameters of the hot billet, the locking cylinder 403 retracts, and the hydraulic cylinder 403 drives the free roller system 1 and the driving roller system 3 to approach the center line of the roller table at the same time. According to the different specification parameters of the hot billet, the feedback signal of the displacement sensor of the hydraulic cylinder 403 controls different opening sizes.

[0066] Step 3: After the opening degree is adjusted, the locking cylinder 403 extends to fix the free roller system 1 and the driving roller system 3 on the fixed base 404 .

[0067] Step 4: The reduction motor 302 is started to drive the straightening roller 102 to rotate, thereby straightening the hot steel billet.

[0068] The present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be regarded as the protection scope of the present invention.

[0069] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0070] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An intelligent continuous and precise straightening device for hot steel billets of multiple specifications, characterized in that: include: Fixed bases are symmetrically arranged on both sides of the roller table; a roller table base is connected and arranged between the two fixed bases; A free roller system and a free roller hydraulic cylinder are slidably arranged on a fixed base at one side. The free roller hydraulic cylinder is arranged on the far side of the roller table and is used to drive the free roller system to move perpendicularly to the roller table. A driving roller system and a driving roller hydraulic cylinder are slidably arranged on the fixed base on the other side. The driving roller hydraulic cylinder is arranged on the far side of the roller table and is used to drive the driving roller system to move perpendicularly to the roller table.

2. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 1 is characterized in that: The free roller system comprises a free roller movable base; a driven straightening roller is vertically arranged on a side of the free roller movable base close to the roller table; The bottom two sides of the free roller movable base are horizontally provided with slide grooves; the slide grooves on the two sides are provided with slide rails on the corresponding fixed base corresponding to the slide grooves; the slide grooves on the two sides of the free roller movable base are slidably provided on the slide rails.

3. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 1, characterized in that: The driving roller system comprises a driving roller movable base; an active straightening roller is vertically arranged on the side of the driving roller movable base close to the roller path; a driving device is arranged on the driving roller movable base, and the active straightening roller is drivingly connected to the driving device; The bottom two sides of the driving roller movable base are horizontally provided with slide grooves; the corresponding two side slide grooves are provided with slide rails on the corresponding fixed base; the slide grooves on the two sides of the driving roller movable base are slidably arranged on the slide rails.

4. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 2 or 3, characterized in that: The slide groove is an inverted U-shaped member composed of an upper angle plate with an inverted L-shaped cross section and a pressure plate, and a sliding plate is arranged on the inner surface of the slide groove.

5. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 4, characterized in that: The upper corner of the upper corner plate of the slide groove near the slide rail is a wedge-shaped surface; a locking cylinder is arranged on the fixed base corresponding to the wedge-shaped surface of the upper corner plate, and a wedge-shaped locking tongue matching the wedge-shaped surface is arranged at the free end of the locking cylinder.

6. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 3, characterized in that: The driving device is a reduction motor, which is installed on the driving roller moving base through a bracket; the output shaft coupling of the reduction motor is connected to the shaft of the active straightening roller.

7. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 1, characterized in that: The hydraulic cylinder is provided with a displacement sensor.

8. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 4, characterized in that: The slide plate is a wear-resistant plate.

9. The intelligent continuous and precise straightening device for hot steel billets of multiple specifications as claimed in claim 5, characterized in that: The locking tongue is made of wear-resistant material; the locking tongue is connected with the piston rod through a bolt.

10. An intelligent continuous and precise straightening method for hot steel billets of multiple specifications, characterized in that: The method is implemented based on the intelligent continuous precision straightening device for hot steel billets of multiple specifications as claimed in claim 1, and comprises the following steps: 1) The free roller system and the driving roller system are both in the initial position, that is, the hydraulic cylinder is in a retracted state and the locking cylinder is in an extended state; 2) When the hot billet needs to be straightened, the locking cylinder retracts, and the hydraulic cylinder drives the free roller system and the driving roller system to approach the center line of the roller table at the same time; the different opening sizes are controlled according to the specification parameters of the hot billet fed back by the front-end continuous casting machine; 3) After the opening degree adjustment is completed, the locking cylinder extends to fix the free roller system and the driving roller system on the fixed base; 4) The reduction motor is started to drive the active straightening roller to rotate, thereby straightening the hot steel billet.

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