A steel plate rotating device for medium and thick plate angle rolling and its use method

Abstract

This invention relates to the field of rolling technology, specifically a steel plate rotation device for medium and thick plate angle rolling and its use method. By leveraging the linkage design of a longitudinal and transverse lead screw drive module, combined with the cam-spring return mechanism of a hydraulic push rod assembly and angle sensor feedback, this device achieves high-precision angular rotation of the steel plate. This device boasts a simplified structure and strong adaptability, significantly improving rolling efficiency and plate shape quality.

Description

Technical Field

[0001] The present invention relates to the field of rolling technology, and in particular to a steel plate rotating device for angle rolling of medium and thick plates and a method of using the same. Background Art

[0002] At present, the medium and thick plate rolling process is divided into three stages: forming, widening and extending. The cross-rolling + longitudinal rolling technology is the main technology for medium and thick plate rolling at present. The defect of this technology is that the slab needs to be rotated 90° between each stage of the medium and thick plate rolling process, which limits production efficiency. At the same time, it is limited by the maximum rolling width. When the slab length is greater than the maximum rolling width of the rolling mill, cross-rolling width extension cannot be achieved. The medium and thick plate angle rolling technology is different from the cross-rolling + longitudinal rolling technology. The slab is rotated to make the rolled piece form a certain angle with the rolling center line for rolling. The angle is generally 15-45°, thereby achieving multi-directional deformation, improving plate shape quality, improving rolling efficiency, and expanding the product specification range. The existing angle rolling technology has the following problems:

[0003] (1) The positioning accuracy is low due to the reliance on the side guide plate, and it is impossible to achieve precise turning of the slab at a small angle. At the same time, the slab length is limited due to the length of the side guide plate, which affects production efficiency.

[0004] (2) Most existing devices have multiple sets of hydraulic push rods on both sides of the roller conveyor. The pushing amount of each push rod is different, the position is fixed and the structure is complex. Summary of the Invention

[0005] The present invention provides a steel plate rotating device for medium and thick plate angle rolling and a method for using the same. The steel plate rotating device has high precision and a simple structure, and can solve the problem of limited billet length.

[0006] According to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A steel plate rotating device for medium and thick plate angle rolling, comprising:

[0008] Two longitudinal screw drive modules are symmetrically arranged and parallel to the rolling direction; each longitudinal screw drive module includes an asynchronous motor, a screw and a convex sliding guide rail;

[0009] Two parallel transverse screw drive modules are arranged perpendicular to the rolling direction; each transverse screw drive module includes an asynchronous motor, a screw, a concave track, a hydraulic push rod assembly and a sliding guide rod;

[0010] The transverse screw transmission module is connected to the convex sliding guide rail of the longitudinal screw transmission module through a concave track; the hydraulic push rod assembly includes an angle sensor and a cam-spring reset structure for real-time monitoring and control of the steel plate rotation angle.

[0011] As a preferred solution of the steel plate rotating device for medium and thick plate angle rolling described in the present invention, the longitudinal screw transmission module includes an asynchronous motor, a coupling, a laser ranging sensor, a nut assembly, a screw, two convex sliding guide rails, two screw bearing seats, and two rolling bearings; wherein, the asynchronous motor and the screw bearing seat are fixed to the ground by anchor bolts, the rolling bearings are installed at both ends of the screw and assembled in the screw bearing seat, the screw and the asynchronous motor are connected by a coupling, and the asynchronous motor drives the screw to rotate; the screw and the nut assembly form a threaded pair, and the rotation of the screw drives the nut assembly to move longitudinally; the two convex sliding guide rails are symmetrically arranged about the central axis of the screw and fixed to the ground by bolts, the distance between the two convex sliding guide rails is less than the roller body length of the front roller of the machine, and its length is greater than the length of the steel plate; the laser ranging sensor is fixed to the end of the convex sliding guide rail.

[0012] As a preferred solution of the steel plate rotation device for medium and thick plate angle rolling described in the present invention, wherein: the transverse screw transmission module includes an asynchronous motor, a coupling, a laser ranging sensor A, a laser ranging sensor B, a hydraulic push rod assembly, a screw, two sliding guide rods, a base, two rolling bearings, two screw bearing seats, a slide rod base a, a slide rod base b, and a concave track; wherein, the asynchronous motor and the screw bearing seat are fixed to the base by bolts, two concave tracks are welded under the base, the rolling bearings are installed at both ends of the screw and assembled in the screw bearing seat B, the asynchronous motor and the screw are connected by a coupling, and the asynchronous motor drives the screw to rotate; the two sliding guide rods are fixed to the base by the slide rod base a and the slide rod base b, and are symmetrically arranged on both sides of the screw.

[0013] As a preferred solution of the steel plate rotation device for medium and thick plate angle rolling described in the present invention, the hydraulic push rod assembly is composed of a push rod base, a hydraulic cylinder, and a piston rod group. A threaded hole and two through holes are provided under the push rod base. The lead screw and the threaded hole cooperate to form a threaded pair. The sliding guide rod passes through the through hole to form a sliding pair. The rotation of the lead screw drives the hydraulic push rod assembly to move horizontally; the laser ranging sensor A is fixed on the slide rod base a or the slide rod base b, and the laser ranging sensor B is fixed on the end of the hydraulic cylinder.

[0014] As a preferred solution of the steel plate rotating device for angle rolling of medium and thick plates described in the present invention, the concave track under the base in the transverse screw transmission module is installed to the convex sliding guide rail in the longitudinal screw transmission module to form a sliding pair; and the base in the transverse screw transmission module is connected to the longitudinal screw transmission module by bolts.

[0015] As a preferred solution of the steel plate rotating device for angle rolling of medium and thick plates described in the present invention, the piston rod assembly is composed of a piston rod, a spring, a sliding block, a rotating block, an axial positioning nut, and an angle sensor, wherein a table is provided at the upper end of the piston rod, and a hole is drilled on the table for connection with the spring; a milling surface is provided on the piston rod to cooperate with the sliding block to limit the circumferential rotation of the sliding block; the sliding block and the rotating block have cylindrical cam components inside, and the two are relatively engaged; the axial positioning nut is connected to the end of the piston rod assembly to limit the axial movement of the rotating block; the upper end surface of the rotating block is used to install the angle sensor.

[0016] As a preferred solution of the steel plate rotation device for angle rolling of medium and thick plates described in the present invention, when the steel plate rotation operation is performed, the two hydraulic push rod assemblies are arranged diagonally, and the two hydraulic push rod assemblies give the steel plate a torque to rotate the steel plate. Taking counterclockwise rotation of steel as an example, the rotating block at the end of the hydraulic push rod assembly rotates synchronously with the steel plate, and the side end face of the rotating block is always in contact with the edge of the steel plate. The sliding block is pressed down and the spring is compressed. After the steel rotation is completed, the rotating block leaves the steel plate, and the spring rebounds to push the sliding block upward. Due to the cam structure inside the sliding block and the rotating block, the rotating block is automatically reset.

[0017] According to one aspect of the present invention, the present invention provides the following technical solutions:

[0018] A method for angle rolling of medium and thick plates, using the above-mentioned steel plate rotating device for angle rolling of medium and thick plates, comprises the following steps:

[0019] S1. Preset distance calculation: Determine the distance between the two horizontal screw drive modules based on the steel plate length and roller parameters;

[0020] S2, hydraulic push rod assembly lifting: the lifting height of the hydraulic push rod assembly is controlled by the laser distance sensor B;

[0021] S3. Hydraulic push rod assembly positioning: The horizontal screw transmission module drives the hydraulic push rod assembly to contact the side of the steel plate to form a diagonal thrust;

[0022] S4, steel plate rotation execution: the two horizontal screw drive modules move synchronously in opposite directions, combined with the angle sensor feedback, to drive the steel plate to rotate to the target angle;

[0023] S5. Reset and rolling: The hydraulic push rod assembly descends and resets, and the steel plate enters the rolling mill for rolling.

[0024] The beneficial effects of the present invention are as follows:

[0025] This invention provides a steel plate rotation device for medium and thick plate angle rolling and its use method. By leveraging the linkage design of a longitudinal and transverse screw drive module, combined with the cam-spring return mechanism of a hydraulic push rod assembly and angle sensor feedback, high-precision angular rotation of the steel plate is achieved. This device boasts a simplified structure and strong adaptability, significantly improving rolling efficiency and plate shape quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 The figure is a schematic diagram of the overall structure of the steel plate rotating device used for medium and thick plate angle rolling;

[0028] Figure 2 It is a schematic diagram of the structure of a single longitudinal screw transmission module;

[0029] Figure 3 This is a schematic diagram of the connection between the nut assembly and the screw;

[0030] Figure 4 It is a schematic diagram of the structure of a single transverse screw transmission module;

[0031] Figure 5 It is a schematic diagram of the connection between the hydraulic push rod assembly, the lead screw and the sliding guide rod;

[0032] Figure 6 This is a schematic diagram of the connection between the transverse screw transmission module and the sliding track;

[0033] Figure 7 This is a schematic diagram of the connection between the base of the transverse screw transmission module and the nut assembly;

[0034] Figure 8 It is a structural diagram of the piston rod group of the hydraulic push rod assembly;

[0035] Figure 9 It is a partial cross-sectional view of the internal structure of the rotating block and the sliding body;

[0036] Figure 10 This is a working diagram of the piston rod group of the hydraulic push rod assembly during steel turning;

[0037] Figure 11 This is a flow chart of the medium and thick plate angle rolling method.

[0038] Description of Figure Numbers:

[0039] 1-first longitudinal screw transmission module, 11-first asynchronous motor, 12-first coupling, 13-first laser ranging sensor, 14-first nut assembly, 15-first screw, 16-first convex sliding guide rail A, -First convex sliding guide rail B, 17-First screw bearing seat A, -First screw bearing seat B, 18-First rolling bearing A, - a first rolling bearing B;

[0040] 2-second longitudinal screw transmission module, 25-second screw, 26-second convex sliding guide rail A, -Second convex sliding guide rail B;

[0041] 3-first transverse screw transmission module, 31-third asynchronous motor, 32-third coupling, 33-third laser ranging sensor A, 34-third laser ranging sensor B, 35-third hydraulic push rod assembly, 36 third screw, 37-third sliding guide rod A, - third sliding guide rod B, 38 - third base, 39 - third rolling bearing A, -Third rolling bearing B, 310-Third screw bearing seat A, -The third screw bearing seat B, 311-the third slide rod base aA, - third slide bar base aB, 312 - third slide bar base bA, - third slide bar base bB, 313 - third concave track A, - third concave track B, 351 - third push rod base, 352 - third hydraulic cylinder, 353 - third piston rod assembly, 353-1 - third piston rod, 353-2 - third spring, 353-3 - third sliding block, 353-4 - third rotating block, 353-5 - third axial positioning nut, 353-6 - third angle sensor, 353-11 - third table, 353-12 - third milling surface, 353-13 - third hole;

[0042] 4-second transverse screw transmission module, 453-4-fourth rotating block, 46-fourth screw.

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] The following will be a clear and complete description of the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0045] A steel plate rotating device for medium and thick plate angle rolling, comprising two longitudinal (parallel to the rolling direction) screw transmission modules (a first longitudinal screw transmission module 1 and a second longitudinal screw transmission module 2), and two transverse (perpendicular to the rolling direction) screw transmission modules (a first transverse screw transmission module 3 and a second transverse screw transmission module 4), such as Figure 1 As shown, it is fixed on the ground below the conveyor roller in front of the machine.

[0046] Two longitudinal (parallel to the rolling direction) screw drive modules (first longitudinal screw drive module 1 and second longitudinal screw drive module 2) with the same structure are arranged symmetrically. The structure of the first longitudinal screw drive module 1 is as follows Figure 2 As shown, the first asynchronous motor 11, a first coupling 12, a first laser ranging sensor 13, a first nut assembly 14, a first lead screw 15, two first convex sliding guide rails (first convex sliding guide rail A16 and first convex sliding guide rail B ), two first screw bearing seats (first screw bearing seat A17 and first screw bearing seat B ), two first rolling bearings (first rolling bearing A18 and first rolling bearing B The second longitudinal screw transmission module 2 also consists of a second asynchronous motor, a second coupling, a second laser ranging sensor, a second nut assembly, a second screw 25, two second convex sliding guide rails (second convex sliding guide rail A26 and second convex sliding guide rail B ), two second screw bearing seats, and two second rolling bearings.

[0047] Among them, the first asynchronous motor 11 and the first screw bearing seat (the first screw bearing seat A17 and the first screw bearing seat B ) is fixed to the ground by anchor bolts, and the first rolling bearing (the first rolling bearing A18 and the first rolling bearing B ) are installed at both ends of the first screw 15 and assembled on the first screw bearing seat (first screw bearing seat A17 and first screw bearing seat B ), the first screw 15 and the first asynchronous motor 11 are connected by the first coupling 12, and the first asynchronous motor 11 drives the first screw 15 to rotate. The first screw 15 and the first nut assembly 14 form a threaded pair, and the rotation of the first screw 15 can drive the first nut assembly 14 to move longitudinally, such as Figure 3 As shown. The two first convex sliding guide rails (first convex sliding guide rail A16 and first convex sliding guide rail B ) are symmetrically arranged about the central axis of the first lead screw 15 and fixed to the ground by bolts, the first convex sliding guide rail A16 and the first convex sliding guide rail B The distance between them is less than the roller length of the front roller, and is greater than the length of the steel plate. The first laser distance measuring sensor 13 is fixed to the end of the first convex sliding guide rail A16.

[0048] Among them, the two first convex sliding guide rails (first convex sliding guide rail A16 and first convex sliding guide rail B16) in the first longitudinal screw transmission module 1 ) is determined by the length of the roller body of the front roller OK, generally take .

[0049] Two transverse (perpendicular to the rolling direction) screw drive modules (first transverse screw drive module 3 and second transverse screw drive module 4) with the same structure are arranged in parallel. The structure of the first transverse screw drive module 3 is as follows: Figure 4 As shown, the third asynchronous motor 31, a third coupling 32, a third laser distance sensor A33, a third laser distance sensor B34, a third hydraulic push rod assembly 35, a third lead screw 36, two third sliding guide rods (third sliding guide rod A37 and third sliding guide rod B ), the third base 38, two third rolling bearings (third rolling bearing A39 and third rolling bearing B ), two third screw bearing seats (third screw bearing seat A310 and third screw bearing seat B ), two third slide bases a (third slide base aA311 and third slide base aB ), two third slide bases b (third slide base bA312 and third slide base bB ), two third concave tracks (third concave track A313 and third concave track B The second transverse screw drive module 4 comprises a fourth asynchronous motor, a fourth coupling, a fourth laser ranging sensor A, a fourth laser ranging sensor B, a fourth hydraulic push rod assembly, a fourth screw 46, two fourth sliding guide rods, a fourth base, two fourth rolling bearings, two fourth screw bearing seats, two fourth slide rod bases a, two fourth slide rod bases b, and two fourth concave rails.

[0050] Among them, the third asynchronous motor 31 and the two third screw bearing seats (third screw bearing seat A310 and third screw bearing seat B ) is fixed to the third base 38 by bolts, and two third concave rails (third concave rail A313 and third concave rail B) are welded below the third base 38. ), two third rolling bearings (third rolling bearing A39 and third rolling bearing B ) are installed at both ends of the third screw 36 and assembled on the two third screw bearing seats (third screw bearing seat A310 and third screw bearing seat B ), the third asynchronous motor 31 is connected to the third lead screw 36 through the third coupling 32, and the third asynchronous motor 31 drives the third lead screw 36 to rotate. ) through two third slide bases a (third slide base aA311 and third slide base aB ) and two third slide bases b (third slide base bA312 and third slide base bB ) are fixed on the third base 38 and are symmetrically arranged on both sides of the third screw 36. The third hydraulic push rod assembly 35 is composed of a third push rod base 351, a third hydraulic cylinder 352, and a third piston rod assembly 353. Figure 5 As shown, a threaded hole and two through holes are provided below the third push rod base 351, and the third lead screw 36 cooperates with the threaded hole to form a thread pair. The third sliding guide rod (the third sliding guide rod A37 and the third sliding guide rod B ) passes through the through hole to form a sliding pair. Rotation of the third lead screw 36 drives the third hydraulic push rod assembly 35 to move laterally. The third laser ranging sensor A33 is fixed to the third slide bar base bA312, and the third laser ranging sensor B34 is fixed to the end of the hydraulic cylinder 352.

[0051] The two concave rails (third concave rail A313 and third concave rail B313) under the third base 38 in the first transverse screw transmission module 3 are connected. ) are installed on the two first convex sliding guide rails (first convex sliding guide rail A16 and first convex sliding guide rail B) in the first longitudinal screw transmission module 1. and the first transverse screw drive module 3 in the third base 38 is connected to the first longitudinal screw drive module 1 by bolts to the first nut assembly 14, such as Figure 6 and Figure 7 shown.

[0052] In order to monitor the rotation angle of the steel plate in real time during rotation, a special structural design is made for the third piston rod assembly 353 of the third hydraulic push rod assembly 35. The third piston rod assembly 353 consists of a third piston rod 353-1, a third spring 353-2, a third sliding block 353-3, a third rotating block 353-4, a third axial positioning nut 353-5, and a third angle sensor 353-6. Figure 8 As shown. A third table 353-11 is provided at the upper end of the third piston rod 353-1. A third hole 353-13 is drilled on the third table 353-11 to connect with the third spring 353-2. A third milling surface 353-12 is provided on the third piston rod 353-1 to cooperate with the third sliding block 353-3 to limit the circumferential rotation of the third sliding block 353-3. The third sliding block 353-3 and the third rotating block 353-4 are internally cylindrical cam components. The internal structure of the third rotating block 353-4 is as shown. Figure 9 As shown, the two are relatively engaged. A third axial positioning nut 353-5 is connected to the end of the third piston rod assembly 353, limiting the axial movement of the third rotating block 353-4. The upper end surface of the third rotating block 353-4 is used to mount a third angle sensor 353-6. Similarly, the fourth piston rod assembly of the fourth hydraulic push rod assembly of the second transverse screw transmission module 4 also has a special structural design. The fourth piston rod assembly consists of a fourth piston rod, a fourth spring, a fourth sliding block, a fourth rotating block 453-4, a fourth axial positioning nut, and a fourth angle sensor.

[0053] When steel turning is required, two hydraulic push rod assemblies (i.e., the third hydraulic push rod assembly 35 of the first transverse screw transmission module 3 and the fourth hydraulic push rod assembly of the second transverse screw transmission module 4) are arranged diagonally. The two hydraulic push rod assemblies give the steel plate a torque to rotate the steel plate. Taking counterclockwise steel turning as an example, the specific working process of the third hydraulic push rod assembly 35 is as follows: Figure 10 The third rotating block 353-4 at the end of the third hydraulic push rod assembly 35 rotates synchronously with the steel plate. The side end surface of the third rotating block 353-4 is always in contact with the edge of the steel plate. The third sliding block 353-3 is pressed downward, and the third spring 353-2 is compressed. After the steel is rotated, the third rotating block 353-4 leaves the steel plate, and the third spring 353-2 rebounds and pushes the third sliding block 353-3 upward. Due to the cam structure inside the third sliding block 353-3 and the third rotating block 353-4, the third rotating block 353-4 is automatically reset.

[0054] Assume that the thickness, width and length of the medium and heavy plate before rolling are 、 and The roller diameter and roller length of the front roller are and , the distance between the two rollers is According to the rolling process requirements, the steel plate needs to rotate clockwise (or counterclockwise) in front of the machine The specific implementation process of the steel plate rotating device for medium and thick plate angle rolling is as follows: Figure 11 :

[0055] Step S1: Align the steel plate and calculate the preset distance X between the two transverse screw drive modules (first transverse screw drive module 3 and second transverse screw drive module 4). The steel plate is transported to the front of the machine and stopped at a designated position. The original production line's steel plate alignment device is used to center the steel plate to the longitudinal center of the front roller table.

[0056] The preset distance X is determined by the length of the steel plate L, the width diameter d of the conveyor rollers, and the distance b between the rollers:

[0057]

[0058] in:

[0059] : The preset distance X between the two horizontal screw drive modules, unit: m;

[0060] : Steel plate length, unit: m;

[0061] : roller diameter, unit: m;

[0062] : The distance between the two rollers, in m;

[0063] Taking the first longitudinal screw transmission module 1 and the first transverse screw transmission module 3 as an example, the first asynchronous motor 11 in the first longitudinal screw transmission module 1 is started to drive the first screw 15 to rotate, and the first transverse screw transmission module 3 is driven to move from the initial position to the right rear of the front roller of the machine through the threaded cooperation between the first screw 15 and the first nut assembly 14; similarly, the second longitudinal screw transmission module 2 drives the second transverse screw transmission module 4 to move from the initial position to the left front of the front roller of the machine. When the distance between the two transverse screw transmission modules (the first transverse screw transmission module 3 and the second transverse screw transmission module 4) reaches the preset distance X, the two longitudinal screw transmission module motors are turned off.

[0064] Step S2: Raise the hydraulic push rod. Taking the first transverse screw transmission module 3 as an example, the third piston rod assembly 353 in the third hydraulic push rod assembly 35 is raised by the third hydraulic cylinder 352. When the third laser ranging sensor B34 detects that the third rotating block 353-4 has risen to a height h1, the third hydraulic cylinder 352 stops operating. Similarly, the rotating block in the second transverse screw transmission module 4 also rises to the same height.

[0065]

[0066] in:

[0067] : The distance from the conveyor roller surface to the ground, unit: m;

[0068] : The distance from the lower end of the rotating block to the ground in the initial state, in meters;

[0069] : Piston rod rising distance, unit: m;

[0070] Step S3: According to the rolling process requirements, the steel plate needs to rotate clockwise (or counterclockwise) in front of the machine, and move the hydraulic push rod assembly of the two horizontal screw drive modules to 、 (or 、 ).

[0071] Taking the first transverse screw drive module 3 as an example, the third asynchronous motor 31 in the first transverse screw drive module 3 is activated, driving the third screw 36 to rotate. The threaded engagement between the third screw 36 and the third hydraulic push rod assembly 35 drives the third hydraulic push rod assembly 35 from its initial position to the side edge of the steel plate, causing the side end surface of the third rotating block 353-4 to contact the side end surface of the steel plate, and the third hydraulic cylinder 352 to stop operating. Similarly, the rotating block in the second transverse screw drive module 4 also moves to contact the other side end surface of the steel plate.

[0072] During this process, the lateral movement distance of the third hydraulic push rod assembly 35 is:

[0073]

[0074] Where:

[0075] : The distance between the initial position of the single-side hydraulic push rod and the edge of the steel plate after centering, unit: m;

[0076] : Working length of the transverse screw drive module, unit: m;

[0077] : Steel plate width, unit: m;

[0078] Step S4, rotating the steel plate. Start the asynchronous motors in the two transverse screw transmission modules. The asynchronous motors have the same speed but opposite directions. The third rotating block 353-4 in the first transverse screw transmission module 3 moves to the left, and the fourth rotating block 453-4 in the second transverse screw transmission module 4 moves to the right. When they contact the steel plate at the same time, they continue to move laterally at the same speed, giving the steel plate a torque to push it to start rotating. The angle sensor on the upper end face of the rotating block measures the rotation angle of the steel plate in real time. When the angle detected by the angle sensor reaches the angle required by the process, When the motor stops working.

[0079] During this process, the lateral movement distance of the third hydraulic push rod assembly 35 is:

[0080]

[0081] Where:

[0082] : The distance that the single-sided hydraulic push rod pushes the steel plate to reach the target corner, unit: m;

[0083] : target billet rotation angle, unit degree;

[0084] Step S5: Lower the hydraulic push rod. The hydraulic push rod assembly of the two transverse screw drive modules retracts to its initial height under the action of the hydraulic cylinder. Rolling the steel plate. The steel plate enters the rolling mill via the front rollers for rolling.

[0085] Example

[0086] The known steel plate size, target steel turning angle and equipment parameters are as follows:

[0087] Board length 6m, board width 1.5m, plate thickness 0.15m;

[0088] Target turning angle of angle-rolled slab 20°;

[0089] Conveyor roller diameter 0.45m, roller gap length 0.46m, roller length 3m;

[0090] Working length of horizontal screw drive module 2.8m;

[0091] The calculation results are as follows:

[0092]

[0093]

[0094]

[0095] Preset distance between two horizontal screw drive modules =5m;

[0096] The distance between the initial position of the single-sided hydraulic push rod and the edge of the steel plate after centering =0.65m;

[0097] The distance that the single-sided hydraulic push rod pushes the steel plate to reach the target corner =1.1699m.

[0098] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A steel plate rotating device for medium and thick plate angle rolling, characterized in that: include: Two longitudinal screw drive modules are symmetrically arranged and parallel to the rolling direction; each longitudinal screw drive module includes an asynchronous motor, a screw and a convex sliding guide rail; Two parallel transverse screw drive modules are arranged perpendicular to the rolling direction; each transverse screw drive module includes an asynchronous motor, a screw, a concave track, a hydraulic push rod assembly and a sliding guide rod; The transverse screw transmission module is connected to the convex sliding guide rail of the longitudinal screw transmission module through a concave track; the hydraulic push rod assembly includes an angle sensor and a cam-spring return structure for real-time monitoring and control of the steel plate rotation angle; The hydraulic push rod assembly consists of a push rod base, a hydraulic cylinder, and a piston rod assembly. A threaded hole and two through holes are located below the push rod base. The lead screw and the threaded hole form a threaded pair, and the sliding guide rod passes through the through holes to form a sliding pair. The rotation of the lead screw drives the hydraulic push rod assembly to move laterally. The laser distance sensor A is fixed to the slide rod base a or slide rod base b, and the laser distance sensor B is fixed to the end of the hydraulic cylinder. The piston rod assembly consists of a piston rod, a spring, a sliding block, a rotating block, an axial positioning nut, and an angle sensor. A table is provided on the upper end of the piston rod, and a hole is drilled on the table to connect with the spring. The piston rod has a milled surface to cooperate with the sliding block and limit its circumferential rotation. The sliding block and the rotating block are internally provided with cylindrical cam components, and the two are relatively engaged. The axial positioning nut is connected to the end of the piston rod assembly to limit the axial movement of the rotating block. The upper end surface of the rotating block is used to mount an angle sensor. When the steel plate is rotated, the two hydraulic push rod assemblies are arranged diagonally. The two hydraulic push rod assemblies give the steel plate a torque to rotate the steel plate. Taking counterclockwise rotation of steel as an example, the rotating block at the end of the hydraulic push rod assembly rotates synchronously with the steel plate. The side end face of the rotating block is always in contact with the edge of the steel plate. The sliding block is pressed down and the spring is compressed. After the steel rotation is completed, the rotating block leaves the steel plate and the spring rebounds to push the sliding block upward. Due to the cam structure inside the sliding block and the rotating block, the rotating block is automatically reset.

2. The steel plate rotating device for medium and thick plate angle rolling according to claim 1, characterized in that: The longitudinal screw transmission module includes an asynchronous motor, a coupling, a laser ranging sensor, a nut assembly, a screw, two convex sliding guides, two screw bearing seats, and two rolling bearings; wherein, the asynchronous motor and the screw bearing seat are fixed to the ground by anchor bolts, and the rolling bearings are installed at both ends of the screw and assembled in the screw bearing seat. The screw and the asynchronous motor are connected by a coupling, and the asynchronous motor drives the screw to rotate; the screw and the nut assembly form a threaded pair, and the rotation of the screw drives the nut assembly to move longitudinally; the two convex sliding guides are symmetrically arranged about the center axis of the screw and fixed to the ground by bolts. The distance between the two convex sliding guides is less than the roller body length of the front roller of the machine, and its length is greater than the length of the steel plate; the laser ranging sensor is fixed to the end of the convex sliding guide.

3. The steel plate rotating device for medium and thick plate angle rolling according to claim 1, characterized in that: The transverse screw transmission module includes an asynchronous motor, a coupling, a laser ranging sensor A, a laser ranging sensor B, a hydraulic push rod assembly, a screw, two sliding guide rods, a base, two rolling bearings, two screw bearing seats, a slide rod base a, a slide rod base b, and a concave track; wherein, the asynchronous motor and the screw bearing seat are fixed to the base by bolts, two concave tracks are welded under the base, the rolling bearings are installed at both ends of the screw and assembled in the screw bearing seat B, the asynchronous motor and the screw are connected by a coupling, and the asynchronous motor drives the screw to rotate; the two sliding guide rods are fixed to the base by the slide rod base a and the slide rod base b respectively, and are symmetrically arranged on both sides of the screw.

4. The steel plate rotating device for medium and thick plate angle rolling according to claim 1, characterized in that: The concave track under the base in the transverse screw transmission module is installed to the convex sliding guide rail in the longitudinal screw transmission module to form a sliding pair; and the base in the transverse screw transmission module is connected to the longitudinal screw transmission module by bolts.

5. A method for angle rolling of medium and thick plates, using the steel plate rotating device for angle rolling of medium and thick plates according to any one of claims 1 to 4, comprising the following steps: S1. Preset distance calculation: Determine the distance between the two horizontal screw drive modules based on the steel plate length and roller parameters; S2, hydraulic push rod assembly lifting: the lifting height of the hydraulic push rod assembly is controlled by the laser distance sensor B; S3. Hydraulic push rod assembly positioning: The horizontal screw transmission module drives the hydraulic push rod assembly to contact the side of the steel plate to form a diagonal thrust; S4, steel plate rotation execution: the two horizontal screw drive modules move synchronously in opposite directions, combined with the angle sensor feedback, to drive the steel plate to rotate to the target angle; S5. Reset and rolling: The hydraulic push rod assembly descends and resets, and the steel plate enters the rolling mill for rolling.

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