A H-shaped steel turnover device

Abstract

The utility model discloses a kind of H-shaped steel turnover device, belong to profile steel production equipment technical field.The device aims to solve the problem of existing turnover equipment H-shaped steel impact drop, cause product and equipment damage.It mainly technical scheme includes: at least two turnover devices in the gap of profile steel transfer rack, H-shaped steel in-place detection device and control system.Turnover device includes the first hydraulic cylinder and the second hydraulic cylinder respectively independent drive's first flap and second flap, position feedback sensor is equipped on two hydraulic cylinders.Innovation lies in, control system executes asymmetric speed control to two hydraulic cylinders, so that the extension speed of second hydraulic cylinder is greater than first hydraulic cylinder, thereby guiding the second flap of carrying H-shaped steel to be quickly lifted, non-carrying first flap slowly follow, realize the stable transition of H-shaped steel barycenter, effectively eliminate the impact phenomenon of turnover critical point, guarantee product surface quality, prolong equipment service life, and realize full-automatic stable turnover.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel production equipment, specifically relating to an H-beam steel turning device. Background Technology

[0002] In an H-beam production line, the turning device is usually located after the baling machine. It is used to turn the bundled H-beams with their webs in a vertical position by 90° so that their webs become horizontal, in order to facilitate subsequent collection, storage and transportation.

[0003] Existing technologies commonly employ a single tilting arm or flap structure. During the tilting process, when the H-beam is raised to a critical angle approaching 45°, its center of gravity undergoes a drastic change, causing the H-beam to suddenly tilt and fall under gravity, generating a massive impact load. This impact leads to a series of problems: Product damage: The huge impact force can easily cause surface defects such as dents and scratches on the flanges of H-beams, which seriously affect product quality.

[0004] Shortened equipment lifespan: Periodic impacts cause the tilting device to bear huge dynamic loads, resulting in severe equipment vibration, loosening of connecting parts, fatigue cracking of key structural components, frequent hydraulic system failures, and a significant reduction in mean time between failures.

[0005] Poor production stability: Frequent equipment maintenance and adjustments lead to production line downtime, directly affecting production efficiency and cost control.

[0006] Therefore, there is an urgent need in this field for an H-beam turning device that can achieve smooth and controllable turning and fundamentally eliminate impact loads. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems and provide an H-beam steel turning device.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An H-beam turning device includes at least two turning devices, an H-beam positioning detection device, and a control system; The flipping device is set in the gap between several steel transfer platforms in the same vertical plane; The H-beam arrival detection device is located on the outside side of the strip steel transfer platform, which is in the same vertical plane as the flipping device; The flipping device includes a first flip plate, a second flip plate, a second hydraulic cylinder, a first hydraulic cylinder, two rotating platforms, two rotating platform bases, and a base. The two rotating platform bases are fixed on the left and right sides of the top surface of the base, and the two rotating platforms are respectively fixed on the top surface of the two rotating platform bases. The bottoms of the first flip plate and the second flip plate are both hinged between the two rotating platforms via rotating shafts. The front end of the first hydraulic cylinder is hinged to the back end of the first flip plate, and the middle part of the cylinder body is hinged to the front end face of the rotating platform base. The front end of the second hydraulic cylinder is hinged to the back end of the second flip plate, and the middle part of the cylinder body is hinged to the rear end face of the rotating platform base. Both the second hydraulic cylinder and the first hydraulic cylinder are equipped with position feedback sensors for detecting the piston rod stroke position; A pressure sensor is provided on the plane that contacts the bottom surface of the second flip plate on the rotating shaft table; The H-beam arrival detection device includes a bracket and an inductive proximity switch. The bracket is fixed on the ground outside the strip steel transfer platform in the same vertical plane as the flipping device, and the inductive proximity switch is installed on the bracket. The control system is electrically connected to the motor, second hydraulic cylinder, first hydraulic cylinder, inductive proximity switch, pressure sensor and position feedback sensor of the steel transfer platform.

[0009] Furthermore, the motor of the steel transfer platform is equipped with a rotary encoder for precisely controlling the stopping position of the H-beam.

[0010] Furthermore, the position feedback sensor is a magnetostrictive linear displacement sensor.

[0011] Furthermore, the flipping axes of the first and second flip plates are on the same axis.

[0012] Furthermore, the control system is configured to perform asymmetric speed control on the second hydraulic cylinder and the first hydraulic cylinder, such that the extension speed of the second hydraulic cylinder is greater than the extension speed of the first hydraulic cylinder.

[0013] Furthermore, the control system is further configured as follows: It receives the H-beam arrival signal sent by the inductive proximity switch and controls the motor of the steel transfer platform to stop running; The second hydraulic cylinder and the first hydraulic cylinder are controlled to extend synchronously, and the asymmetric speed control is executed to drive the second flap and the first flap to rotate around the pivot, so as to flip the H-beam. After determining that the H-beam has flipped based on the signal from the position feedback sensor, the second hydraulic cylinder and the first hydraulic cylinder are controlled to retract synchronously, so that the first flap and the second flap return to a horizontal state. After receiving a pressure signal from the pressure sensor indicating that the second flap has reset, the motor of the steel transfer platform is restarted to transport the flipped H-beam.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses the core design of "double-flip plate asymmetric speed control" to make the second flip plate that supports the H-beam lift up quickly, while the first flip plate that does not support it follows slowly. This actively guides the center of gravity of the H-beam to transition smoothly, rather than passively waiting for it to change abruptly. This fundamentally solves the problem of the H-beam suddenly flipping and falling at the 45° critical point. The measured impact load can be reduced by more than 90%. 2. The smooth flipping process of this invention avoids surface damage to the H-beams, significantly improving the product qualification rate. Simultaneously, the equipment is protected from periodic impacts, greatly reducing the failure rate of key structural components and the hydraulic system, and extending the equipment's service life. 3. In the initial stage of flipping, the leading edge of the bottom surface of the H-beam is restricted within the V-shaped area between the two flip plates, forming an effective mechanical limit, preventing the H-beam from slipping or shifting during the flipping process, and ensuring the accuracy and consistency of the flipping action. 4. This utility model achieves full automation of the H-beam steel conveying process from conveying, precise positioning, automatic flipping, resetting and re-conveying through a closed-loop control system consisting of an inductive proximity switch, a position feedback sensor, a pressure sensor and a control system. It has high production efficiency and ensures operational stability through reliable sensor logic (such as using a position sensor instead of a defective pressure point detector). Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention in use; Figure 2 This is a schematic diagram of the structure of a single flipping device of this utility model; Figure 3 This is a schematic diagram of the H-beam before it is flipped over; Figure 4 This is a schematic diagram of an H-beam after it has been flipped over; In the diagram: 1. Steel transfer platform; 2. H-beam; 3. Tilting device; 4. First flip plate; 5. Second flip plate; 6. Second hydraulic cylinder; 7. First hydraulic cylinder; 8. Rotary shaft platform; 9. Rotary shaft; 10. Rotary shaft platform base; 11. Base; 12. Bracket; 13. Inductive proximity switch; 14. Pressure sensor. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1-4As shown, an H-beam turning device includes at least two turning devices 3, an H-beam positioning detection device, and a control system; The flipping device 3 is set in the gap between several steel section transfer tables 1 in the same vertical plane. The motor of the steel section transfer table 1 is equipped with a rotary encoder for precisely controlling the stopping position of the H-beam 2. The H-beam arrival detection device is located on the outer side of the strip steel transfer platform 1, which is in the same vertical plane as the flipping device 3; The flipping device 3 includes a first flip plate 4, a second flip plate 5, a second hydraulic cylinder 6, a first hydraulic cylinder 7, two rotating platforms 8, two rotating platform bases 10, and a base 11. The two rotating platform bases 10 are fixed to the left and right sides of the top surface of the base 11, and the two rotating platforms 8 are respectively fixed to the top surfaces of the two rotating platform bases 10. The bottoms of the first flip plate 4 and the second flip plate 5 are both hinged between the two rotating platforms 8 via rotating shafts 9, and the flipping axes of the first flip plate 4 and the second flip plate 5 are on the same axis. The first hydraulic cylinder... The front end of the first hydraulic cylinder 7 is hinged to the back of the first flip plate 4, the middle of the cylinder body is hinged to the front end face of the rotating shaft base 10, and the rear end is suspended. The front end of the second hydraulic cylinder 6 is hinged to the back of the second flip plate 5, the middle of the cylinder body is hinged to the rear end face of the rotating shaft base 10, and the rear end is suspended. The top surface of the rotating shaft 8 is flush with the top surface of the strip steel transfer platform 1. Position feedback sensors (such as magnetostrictive linear displacement sensors) are installed on both the second hydraulic cylinder 6 and the first hydraulic cylinder 7 to detect the extension stroke of the piston rod in real time and transmit the signal to the control system. A pressure sensor 14 is provided on the plane where the rotating platform 8 contacts the bottom surface of the second flap 5, for detecting whether the second flap 5 has been reset to a horizontal state. The H-beam positioning detection device includes a bracket 12 and an inductive proximity switch 13. The bracket 12 is fixed on the ground outside the strip steel transfer platform 1 in the same vertical plane as the flipping device 3. The inductive proximity switch 13 is installed on the bracket 12, and its height is set so that when the H-beam 2 passes by, the inductive proximity switch 13 can detect its position. The control system is electrically connected to the motor, second hydraulic cylinder 6, first hydraulic cylinder 7, inductive proximity switch 13, and pressure sensor 14 of the steel transfer platform 1, respectively. The control system is configured as follows: Receive the arrival signal of H-beam 2 sent by inductive proximity switch 13, and control the motor of steel transfer platform 1 to stop running; The second hydraulic cylinder 6 and the first hydraulic cylinder 7 are controlled to extend synchronously, driving the second flap 5 and the first flap 4 to rotate around the rotating shaft 9. The extension speed of the second hydraulic cylinder 6 is controlled to be greater than the extension speed of the first hydraulic cylinder 7, so as to flip the H-beam 2. After the H-beam 2 flips and lands on the first flip plate 4, the pressure sensor 1 experiences a sudden pressure change, proving that the flipping was successful. After the flipping is completed, the second hydraulic cylinder 6 and the first hydraulic cylinder 7 are controlled to retract synchronously, so that the first flip plate 4 and the second flip plate 5 return to the horizontal state. At this time, the pressure sensor 14 detects the pressure of the second flip plate 5. After receiving the pressure signal from the pressure sensor 14, the motor of the control steel transfer platform 1 is restarted to transport the flipped H-beam 2.

[0018] Initial state: The hydraulic cylinder retracts, and the first flap 4 and the second flap 5 are in a horizontal state, with their top surfaces forming a supporting plane together with the top surface of the steel transfer platform 1. The bundled H-beams 2 (with vertical webs) are hoisted to the rear of the platform.

[0019] Conveying and Positioning: The motor of the steel transfer platform 1 is started, and the H-beam 2 is conveyed forward. When its web triggers the inductive proximity switch 13, the signal is transmitted to the control system. The control system, combined with the feedback from the rotary encoder on the motor, precisely positions the H-beam 2, stopping it so that its bottom edge is exactly above the joint of the first flip plate 4 and the second flip plate 5.

[0020] Asymmetric speed reversal: The control system controls the second hydraulic cylinder 6 and the first hydraulic cylinder 7 to extend simultaneously, but sets the extension speed of the second hydraulic cylinder 6 to be significantly greater than that of the first hydraulic cylinder 7.

[0021] The second flap 5 quickly lifts the bottom surface of the H-beam 2, while the first flap 4 slowly rises. The front edge of the bottom of the H-beam 2 is confined within the V-shaped area formed by the two flaps.

[0022] When the position feedback sensor detects that the flipping angle of the second flap 5 exceeds 45° (for example, reaching 55°-60°), the center of gravity of the H-beam 2 has smoothly passed the flipping axis and gently flips onto the first flap 4 under the action of gravity.

[0023] After the control system determines that the flipping is complete (based on the position sensor signal), it controls the two hydraulic cylinders to retract synchronously, causing the flip plate to fall back.

[0024] When the second flap 5 falls back to the horizontal position and presses against the pressure sensor 14, the sensor sends a signal.

[0025] After receiving this signal, the control system restarts the motor of the steel transfer platform 1 and transports the H-beam 2, which has completed a 90° rotation (with the web horizontal), away, thus completing the entire operation process.

Claims

1. An H-beam turning device, characterized in that, Includes at least two flipping devices (3), an H-beam positioning detection device, and a control system; The flipping device (3) is set in the gap between several steel transfer frames (1) in the same vertical plane; The H-beam arrival detection device is set on the outside of the strip steel transfer platform (1) in the same vertical plane as the flipping device (3); The flipping device (3) includes a first flip plate (4), a second flip plate (5), a second hydraulic cylinder (6), a first hydraulic cylinder (7), two rotating platforms (8), two rotating platform bases (10), and a base (11). The two rotating platform bases (10) are fixed on the left and right sides of the top surface of the base (11). The two rotating platforms (8) are respectively fixed on the top surface of the two rotating platform bases (10). The bottoms of the first flip plate (4) and the second flip plate (5) are both hinged between the two rotating platforms (8) through a rotating shaft (9). The front end of the first hydraulic cylinder (7) is hinged to the back of the first flip plate (4), and the middle part of the cylinder body is hinged to the front end face of the rotating platform base (10). The front end of the second hydraulic cylinder (6) is hinged to the back of the second flip plate (5), and the middle part of the cylinder body is hinged to the rear end face of the rotating platform base (10). Both the second hydraulic cylinder (6) and the first hydraulic cylinder (7) are equipped with position feedback sensors for detecting the piston rod stroke position; A pressure sensor (14) is provided on the plane that contacts the bottom surface of the rotating platform (8) and the second flap (5). The H-beam positioning detection device includes a bracket (12) and an inductive proximity switch (13). The bracket (12) is fixed on the ground outside the strip steel transfer platform (1) in the same vertical plane as the flipping device (3). The inductive proximity switch (13) is installed on the bracket (12). The control system is electrically connected to the motor, the second hydraulic cylinder (6), the first hydraulic cylinder (7), the inductive proximity switch (13), the pressure sensor (14), and the position feedback sensor of the steel transfer platform (1).

2. The H-beam turning device according to claim 1, characterized in that, The motor of the steel transfer platform (1) is equipped with a rotary encoder for precisely controlling the stopping position of the H-beam (2).

3. The H-beam turning device according to claim 1, characterized in that, The position feedback sensor is a magnetostrictive linear displacement sensor.

4. The H-beam turning device according to claim 1, characterized in that, The flipping axes of the first flip plate (4) and the second flip plate (5) are on the same axis.

5. The H-beam turning device according to claim 1, characterized in that, The control system is configured to perform asymmetric speed control on the second hydraulic cylinder (6) and the first hydraulic cylinder (7) such that the extension speed of the second hydraulic cylinder (6) is greater than the extension speed of the first hydraulic cylinder (7).

6. The H-beam turning device according to claim 5, characterized in that, The control system is further configured to: Receive the H-beam (2) arrival signal sent by the inductive proximity switch (13) and control the motor of the steel transfer platform (1) to stop running; The second hydraulic cylinder (6) and the first hydraulic cylinder (7) are controlled to extend synchronously, and the asymmetric speed control is executed to drive the second flap (5) and the first flap (4) to rotate around the rotating shaft (9) so that the H-beam (2) is flipped. After the H-beam (2) is flipped based on the signal from the position feedback sensor, the second hydraulic cylinder (6) and the first hydraulic cylinder (7) are controlled to retract synchronously, so that the first flap (4) and the second flap (5) return to the horizontal state. After receiving the pressure signal detected by the pressure sensor (14) after the second flip plate (5) is reset, the motor of the control steel transfer platform (1) is restarted to transport the flipped H-beam (2).

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