Strip steel head pulling system and strip steel head pulling method

Abstract

The invention relates to the technical field of steel rolling equipment, in particular to a strip steel head pulling system and a strip steel head pulling method.The strip steel head pulling system comprises a track, a tractor, a lifting clamping device and a guiding device, and the track is arranged above a strip steel conveying device. And the tractor is arranged on the track. The lifting clamping device is installed on the tractor, two opposite clamping plates are arranged at the lower end of the lifting clamping device, and the clamping plates can be driven by the tractor to operate along the strip steel, clamp the head of the strip steel and convey the strip steel to the clamping rollers. The guide device is arranged at the front end of the strip steel conveying device and comprises two guide plates and a driving device for driving the two guide plates to be opened and closed, a guide groove for strip steel to pass through is formed between the two guide plates, and the guide plates are not unfolded and unfolded at the initial stage of conveying the strip steel on the strip steel conveying device; and the oscillation amplitude of the strip steel is controlled, so that the strip steel is accommodated on the strip steel conveying device in an S shape with larger amplitude. The control device is connected to the tractor, the lifting clamping device and the guide device.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling equipment, and more specifically, to a strip leading system and a strip leading method. Background Art

[0002] In the process of rolling steel production, a coiler is usually used to collect the strip. The hot-rolled strip exits from the last finishing mill stand and then enters the pinch roll through a twist chute.

[0003] In actual production, after the strip passes through the oscillator, the head of the strip may present different states such as standing upright, adhering to the wall, fitting, bending back, and lying obliquely, and it is difficult to automatically and normally bite into the pinch roll. The angle of the oscillator is fixed, and for the strip passing through the oscillator with a fixed angle, its oscillation amplitude is the same. When using a machine to clamp the strip head and feed it into the pinch roll, the oscillation amplitude of the strip head area is the same as that of the whole strip, making it difficult for the machine to clamp and feed it into the pinch roll. It is also difficult to operate manually with a long-handled clamp to hold the strip head and straighten it before feeding it into the pinch roll, which has certain safety hazards. Summary of the Invention

[0004] The present invention is made to solve the above technical problems, and its purpose is to provide a strip leading system and a strip leading method, which can control the oscillation amplitude of the strip head to be smaller when passing through the guiding device by arranging a deployable guiding device, making it more conducive to machine clamping and feeding into the pinch roll.

[0005] To achieve the above object, the present invention provides a strip leading system, including: a track arranged above the strip conveying device; a tractor arranged on the track; a lifting and clamping device installed on the tractor, with two opposite clamping plates at the lower end; a guiding device arranged at the front end of the strip conveying device, including two guiding plates and a driving device for driving the two guiding plates to open and close, and a guiding groove for the strip to pass through is formed between the two guiding plates; a control device connected to the tractor, the lifting and clamping device, and the guiding device.

[0006] Preferably, the guiding device further includes a connecting rod and an adjusting device. The two guiding plates are respectively arranged on both sides of the adjusting device. The connecting rod is rotatably connected to the adjusting device and the guiding plate. The adjusting device is connected to the driving device and the control device, and opens and closes the guiding plate under the control of the control device and the driving device.

[0007] Preferably, the adjusting device includes a hydraulic cylinder, and the hydraulic cylinder is rotatably connected to the connecting rod.

[0008] Preferably, the tractor further includes traveling wheels and guide wheels disposed at the lower end of the vehicle body. The traveling wheels are slidably disposed on the surface of the track, and the guide wheels are slidably disposed on the side surface of the track.

[0009] Preferably, there are at least two guide wheels. The two guide wheels are located on the side walls at both ends of any one track, and the two guide wheels are arranged in parallel.

[0010] Preferably, the lifting and clamping device further includes a transmission device, a fixing frame and a driving motor. The fixing frame is installed on the tractor, and the transmission device is installed on the fixing frame and connected to the motor and the clamping plate.

[0011] Preferably, the transmission device includes two connecting rods, two first rotating rods, two second rotating rods and two meshing transmission gears. The two transmission gears are rotatably arranged on the fixing frame and connected to the motor. One end of the connecting rod is connected with the clamping plate. One end of the first rotating rod is fixedly connected to the shaft of the transmission gear. The other end of the first rotating rod is rotatably connected to the connecting rod. One end of the second rotating rod is rotatably connected to the fixing frame, and the other end of the second rotating rod is rotatably connected to the connecting rod.

[0012] The present invention provides a strip leading method applicable to the strip leading system described in any one of the above. The method includes the following execution steps: after detecting a start signal, controlling the tractor to start and travel along the track from the initial position; in response to the strip head exceeding a preset distance from the guiding device, controlling the guiding plate to open; when detecting that the tractor reaches the first preset position, controlling the clamping plate of the lifting and clamping device to descend and gradually approach the strip; in response to the first sensor on the tractor detecting a strip signal and the second sensor on the tractor not detecting a strip signal, controlling the clamping plate to clamp the strip and controlling the tractor to run at the same speed as the strip; the first sensor is used to detect the strip behind the running direction of the tractor, and the second sensor is used to detect the strip in front of the running direction of the tractor; in response to the tractor reaching the second preset position, controlling the clamping plate to open and lift, and controlling the tractor to return to the initial position.

[0013] Preferably, before the step of in response to the strip head exceeding a preset distance from the guiding device and controlling the guiding plate to open, the method further includes: controlling the tractor to accelerate to a first preset speed and then controlling the tractor to travel at a constant speed.

[0014] Preferably, in response to the first sensor on the tractor detecting a strip signal and the second sensor on the tractor not detecting a strip signal, controlling the clamping plate to clamp the strip and controlling the tractor to run at the same speed as the strip further includes: in response to the first sensor on the tractor detecting a strip signal and the second sensor on the tractor not detecting a strip signal, controlling the tractor to decelerate to run at the same speed as the strip and then controlling the clamping plate to clamp the strip.

[0015] According to the above description and practice, the strip leading system of the present invention includes a track, a tractor, a lifting and clamping device, and a guiding device. Among them, the track is arranged above the strip conveying device. The tractor is arranged on the track and is used to arrange the lifting and clamping device and the guiding device above the strip conveying device together and process the strip. The lifting and clamping device is installed on the tractor, and the lower end has two opposite clamping plates. The clamping plates can move along the strip driven by the tractor, clamp the head of the strip, and send the strip to the pinch rolls. The guiding device is arranged at the front end of the strip conveying device and includes two guiding plates and a driving device for driving the two guiding plates to open and close. A guiding groove for the strip to pass through is formed between the two guiding plates. At the initial stage of the strip being transported on the strip conveying device, the guiding plates are not unfolded. After a period of time, the guiding plates are unfolded to control the oscillation amplitude of the strip, so that the strip is accommodated on the strip conveying device in a larger-amplitude S shape. When the head of the strip swings in the guiding groove, the amplitude is small, and the clamping device is more likely to clamp the head of the strip and send it into the pinch rolls. The control device is connected to the tractor, the lifting and clamping device, and the guiding device to control the operation of the entire strip leading system, so that the strip leading system cooperates within the entire rolling mill system, thereby ensuring the production quality of the strip. Brief Description of the Drawings

[0016] Figure 1 It is a top view of the strip leading system involved in an embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of the lifting and clamping device of the strip leading system involved in an embodiment of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the guiding device of the strip leading system involved in an embodiment of the present invention.

[0019] Figure 4 It is a side view of the lifting and clamping device involved in an embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of the lifting and clamping device involved in an embodiment of the present invention.

[0021] Figure 6It is a schematic structural diagram of a lifting and clamping device in another embodiment of the present invention.

[0022] Figure 7 The figure is a schematic diagram of the structure of a driving device of a strip steel tractor in one embodiment of the present invention.

[0023] Figure 8 It is a schematic structural diagram of a driving device of a strip steel tractor in another embodiment of the present invention.

[0024] Figure 9 The figure is a top view of a tractor for a strip steel leading system according to an embodiment of the present invention.

[0025] Figure 10 The present invention is a flowchart of a strip leading method according to an embodiment of the present invention.

[0026] Figure 11 The present invention is a time diagram of the movement patterns of the steel strip and the tractor in the steel strip leading system according to an embodiment of the present invention.

[0027] Figure 12 The figure is a schematic diagram of the traveling speeds of the strip and the tractor involved in the strip leading system in one embodiment of the present invention. DETAILED DESCRIPTION

[0028] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] In addition, the accompanying drawings are only schematic diagrams of the present invention and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, so their repeated description will be omitted. It should be noted that in the present invention, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as marks, not to limit the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, 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.

[0030] Unless otherwise clearly defined and limited, the terms "installation", "connection", and "linkage" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention discloses a strip leading system. Please refer to Figures 1 to 12 , the strip leading system includes a track 1, a tractor 2, a lifting and clamping device 3, and a guiding device 4. Among them, the track 1 is arranged above the strip conveying device. The tractor 2 is arranged on the track 1 and is used to arrange the lifting and clamping device 3 and the guiding device 4 above the strip conveying device together and process the strip. The lifting and clamping device 3 is installed on the tractor 2 and has two opposite clamping plates 31 at the lower end. The clamping plates 31 can run along the strip under the drive of the tractor 2, clamp the head of the strip, and send the strip to the pinch rolls. The guiding device 4 is arranged at the front end of the strip conveying device and includes two guiding plates 41 and a driving device 42 for driving the two guiding plates 41 to open and close. A guiding groove 43 for the strip to pass through is formed between the two guiding plates 41. At the initial stage of the strip being transported on the strip conveying device, the guiding plates 41 are not unfolded. After a period of time, the guiding plates 41 are unfolded to control the oscillation amplitude of the strip, so that the strip is accommodated on the strip conveying device in a larger-amplitude S shape. When the head of the strip swings in the guiding groove 43, its swinging amplitude is smaller, and the clamping device is more likely to clamp the head of the strip and send it into the pinch rolls. The control device is connected to the tractor 2, the lifting and clamping device 3, and the guiding device 4 to control the operation of the entire strip leading system, so that the strip leading system cooperates within the entire rolling mill system, thereby ensuring the production quality of the strip.

[0032] In some embodiments, the tractor 2 further includes a driving device 7 and sensors (not shown in the figure). The driving device 7 is connected to the vehicle body 23 and directly drives the entire vehicle body 23 so that the tractor 2 travels along the track 1. There are two sensors configured. The first sensor is used to detect whether there is a strip at the front end of the vehicle body 23, and the second sensor is used to detect whether there is a strip at the rear end. When the vehicle body 23 slides along the track 1 driven by the driving device 7, and the first sensor does not sense the signal of no strip at the front end and the second sensor senses the signal of the existence of a strip at the rear end, the lifting and clamping device 3 can descend and clamp the strip and slide along the track 1 together, thereby realizing the clamping of the head of the strip, enabling it to enter the coiling device at a specific angle, and thus ensuring the quality of strip coiling.

[0033] It can be understood that since the entire strip production line is usually large and the environment is relatively complex, in order to avoid interference from other strip production processes when the driving device 7 directly drives and controls the speed of the tractor 2, in some embodiments, the driving device 7 includes a motor 71, a rotating gear, and a rack 73. The rotating gear 72 meshes with the rack 73. The motor 71 is connected to the rotating gear 72, and the rack 73 is installed on the track 1. Driven by the motor 71, the tractor 2 is driven to move through the meshing of the rotating gear 72 and the rack 73. On the one hand, by adding the rotating gear 72 and the rack 73, when the entire system is overloaded, the rotating gear 72 may slip or break under the action of overload, thereby protecting the motor 71 from damage. On the other hand, by using a simple rotating gear 72 and rack 73 for transmission, the high speed and low torque of the motor 71 can be converted into low speed and high torque. Moreover, the maintenance and replacement of the rack 73 and the rotating gear 72 are simpler and more convenient, with lower maintenance costs, which is more conducive to cost savings.

[0034] It can be understood that in order to realize the simultaneous opening or closing of the guide plates 41 on both sides by using a single driving device 42, in some embodiments, the guiding device 4 further includes a connecting rod 44 and an adjusting device 45. The two guide plates 41 are respectively arranged on both sides of the adjusting device 45. The connecting rod 44 is rotatably connected to the adjusting device 45 and the guide plate 41. The adjusting device 45 is connected to the driving device 42 and the control device, and opens and closes the guide plate 41 under the control of the control device and the driving device 42. Specifically, when the control device controls the driving device 42 to open, the guide plate 41 is driven to unfold or close through the movement of the connecting rod 44, thereby adjusting the unfolding angle of the guide groove 43.

[0035] Furthermore, in some embodiments, rolling rollers 32 are arranged on the opposite sides of the two clamping plates 31. When the two clamping plates 31 clamp the strip, the rolling rollers 32 rotate under the push of the strip, further ensuring that when the clamping plates 31 clamp the strip and drive the strip to run, if there is still relative movement between the clamping plates 31 and the strip, the strip can still move a certain distance between the clamping plates 31 through the rolling of the rolling rollers 32 until there is no relative movement between the clamping plates 31 and the strip, avoiding abrasion of the strip by the clamping plates 31 and ensuring the coiling quality of the strip.

[0036] It can be understood that in order to ensure the clamping effect of the clamping plates 31 on the strip, in some embodiments, the clamping plates 31 further include friction plates (not shown in the figure), which are arranged on the opposite sides of the two clamping plates 31. When the clamping plates 31 approach the strip and clamp the strip, the friction between the clamping plates 31 and the strip is increased through the action of the friction plates, thereby ensuring the clamping effect of the clamping plates 31 on the strip, avoiding the strip slipping out of the clamping plates 31, causing abrasion to the strip, and affecting the transportation and coiling efficiency of the strip at the same time.

[0037] In some embodiments, the adjusting device 45 includes a hydraulic cylinder, which is rotatably connected to the connecting rod 44. When it is necessary to open the guide plate 41, the hydraulic cylinder extends and pushes the connecting rod 44 to rotate, thereby realizing the unfolding of the guide plate 41. When it is necessary to close the guide plate 41, the hydraulic cylinder contracts to drive the connecting rod 44 to rotate in the reverse direction, realizing the closing of the wire guide plate.

[0038] It can be understood that in order to ensure the stable operation of the tractor 2 on the track 1 when the strip leading system moves above the strip conveying device and prevent deviation due to the reaction force of the strip, in some embodiments, the tractor 2 further includes a traveling wheel 21 and a guide wheel 22 provided at the lower end of the vehicle body 23. The traveling wheel 21 is slidably disposed on the surface of the track 1 to ensure that the tractor 2 can move along the upper surface of the track 1. The guide wheel 22 is slidably disposed on the side surface of the track 1. That is to say, at this time, the guide wheel 22 is clamped on the edge of the track 1, playing a guiding role for the tractor 2, further ensuring the running track of the tractor 2, and avoiding the deviation of the tractor 2 under the reaction force of the strip when driving the lifting and clamping device 3 to clamp the strip, thereby affecting the subsequent coiling of the strip.

[0039] Further, in order to ensure the guiding effect of the guide wheel 22 on the entire tractor 2, in some embodiments, the guide wheel 22 includes at least two. The two guide wheels 22 are located on the side walls at both ends of any one track 1, and the two guide wheels 22 are arranged in parallel to jointly clamp the track 1 and run along the side wall of the track 1. It can be understood that the two guide wheels 22 are arranged on the same plane to prevent the tractor 2 from being unstable due to the clamping force not being on the same plane during movement, thereby affecting the straightening and clamping of the strip by the lifting and clamping device 3 on the tractor 2. In addition, when there are other structures on the track 1 that have a certain obstruction to the guide wheel 22, the two guide wheels 22 may not be arranged on the same plane to avoid other structures on the track 1, thereby ensuring the bilateral guiding effect on the tractor 2. However, in this case, the running speed of the tractor 2 should be controlled according to the actual situation to avoid the instability of the center of gravity of the tractor 2 due to excessive speed of the tractor 2.

[0040] It can be understood that in order to ensure the guiding effect of the guide wheel 22 and prevent the tractor 2 from deviating during guiding, in some embodiments, the axis of the guide wheel 22 is perpendicular to the axis of the traveling wheel 21, ensuring that when the vehicle body 23 runs along the track 1 under the action of the traveling wheel 21, the guide wheel 22 always travels along the side wall of the track 1, further ensuring the stability of the tractor 2 when traveling along the track 1.

[0041] Further, in some embodiments, the two guide wheels 22 are located on both sides of the vehicle body 23 and are respectively arranged at two opposite ends of the track 1. That is to say, at this time, the two guide wheels 22 arranged on both sides of the vehicle body 23 not only realize the guiding function but also realize the clamping function of the tractor 2 on the track 1, further avoiding the situation that the tractor 2 disengages from the track 1 under the influence of external forces during the movement on the track 1, which affects the transportation and coiling of the strip steel.

[0042] In some other embodiments, the two guide wheels 22 are located on the same side of the vehicle body 23 and are arranged at both ends of the walking wheels 21, realizing the clamping of the single-sided track 1. Similarly, the stability of the tractor 2 can be realized, thereby avoiding the tractor 2 disengaging from the track 1 under the influence of external forces during the operation along the track 1. At the same time, it can also avoid other structures on the other side of the track 1, thereby preventing the guide wheels 22 from being blocked by other structures when the tractor 2 travels along the track 1, which may cause the transportation of the tractor 2 to deviate.

[0043] In some other embodiments, the two guide wheels 22 are located on the same side of the vehicle body 23 and are arranged on the same side of the walking wheels 21. At this time, the two guide wheels 22 are arranged on one side of the track 1 to realize the guiding function of the tractor 2 during the movement.

[0044] It can be understood that in order to simultaneously achieve the beneficial effects in the above embodiments, in some additional embodiments, four guide wheels 22 are provided. Along the running direction of the vehicle body 23, the two guide wheels 22 on the same side at both ends of the vehicle body 23 are respectively arranged at both ends of the walking wheels 21. While realizing the clamping of the track 1 to ensure stability, the guiding function of the tractor 2 during the movement is ensured. And at this time, four guide wheels 22 are provided, further ensuring the balance of the center of gravity of the entire tractor 2, avoiding the situation that the tractor 2 deviates under the influence of external forces when moving together with the strip steel, which may cause damage to the strip steel and affect the transportation and coiling efficiency and quality of the strip steel.

[0045] Since the lifting and clamping device 3 provided on the tractor 2 needs to rise or fall at the corresponding position according to the actual situation, in some embodiments, the lifting and clamping device 3 further includes a transmission device 5, a fixing frame 33 and a driving motor 34. The fixing frame 33 is installed on the tractor 2, and the transmission device 5 is installed on the fixing frame 33 and is connected to the motor 71 and the clamping plate 31. The transmission device 5 drives the clamping plate 31 to move upward or downward under the drive of the motor 71.

[0046] Further, in some embodiments, the transmission device 5 includes two connecting rods 51, two first rotating rods 52, two second rotating rods 53, and two meshing transmission gears 54. The two transmission gears 54 are rotatably arranged on the fixed frame 33 and connected to the motor 71. One end of the connecting rod 51 is connected with a clamping plate 31. One end of the first rotating rod 52 is fixedly connected to the shaft of the transmission gear 54. The other end of the first rotating rod 52 is rotatably connected to the connecting rod 51. One end of the second rotating rod 53 is rotatably connected to the fixed frame 33. The other end of the second rotating rod 53 is rotatably connected to the connecting rod 51. The transmission gear 54 is driven by the motor 71 to rotate. The rotation of the two transmission gears 54 drives the two connecting rods 51, the two first rotating rods 52, and the two second rotating rods 53 to rotate. Through the rotational movement, the rising and falling of the clamping plate 31 are realized. Moreover, since the clamping plate 31 is arranged on the connecting rod 51, the connecting rod 51 rotates in an arc under the drive of the first rotating rod 52 and the second rotating rod 53. Thus, when the clamping plate 31 descends, it can gradually approach and reach the head of the strip steel and clamp the head of the strip steel, further ensuring the straightening and clamping effects on the strip steel, ensuring the flatness of the strip steel when it is sent into the coiling device, and improving the coiling quality of the strip steel.

[0047] Among them, in some embodiments, the connecting rod 51 and the fixed frame 33 are arranged in parallel, and the first rotating rod 52 and the second rotating rod 53 are arranged in parallel, so that the entire transmission device 5 forms a parallelogram, which is more conducive to the transmission device 5 driving the mutual approach between the two clamping plates 31 on both sides and completely clamping the strip steel under the drive of the driving motor 34. Thereby, it is avoided that the strip steel slips from the clamping plate 31 due to the unstable clamping of the strip steel by the clamping plate 31, which will not only cause wear to the surface of the strip steel, but also affect the transportation efficiency and coiling quality of the strip steel.

[0048] In order to ensure that when the two meshing transmission gears 54 rotate, they can stably drive the connecting rod 51 and the clamping plate 31 below the connecting rod 51 to rotate and approach, and ensure that the clamping plate 31 can always rotate a certain angle and clamp the strip steel. In some embodiments, the central angle of the transmission gear 54 is not less than 90 degrees. Specifically, it can be 90 degrees, 100 degrees, 120 degrees, 150 degrees, etc., or it can be a complete transmission gear 54. So that the clamping plate 31 rotates along an arc under the drive of the driving motor 34, the transmission gear 54, the first rotating rod 52, and the second rotating rod 53. While realizing the rising and falling of the clamping plate 31, the mutual separation and approach between the clamping plates 31 are also realized. Compared with the traditional structure that requires two devices to separately control the rising and falling of the clamping plate 31 and the clamping and loosening, it can reduce the structural weight on the tractor 2 and avoid the excessive weight of the tractor 2 having an additional impact on the strip steel transmission device.

[0049] To reduce the weight on the tractor 2, the drive motor 34 can be arranged on the track 1. In some embodiments, the transmission device 5 further includes a transmission rod 56 and a rotating link 57. The rotating link 57 is fixedly connected to the drive motor 34. One end of the transmission rod 56 is rotatably connected to the rotating link 57, and the other end of the transmission rod 56 is fixedly connected to the shaft of the transmission gear 54. The rotational force of the drive motor 34 is converted into the linear driving force of the transmission rod 56 through the rotating link 57, thereby driving the transmission gear 54 to rotate and driving the clamping plate 31 on the connecting rod 51 to perform an arc motion, approaching and clamping the strip steel.

[0050] Further, in some embodiments, it further includes a transmission auxiliary member 58, which is arranged on the fixed frame 33 and rotatably connected to the transmission rod 56. The transmission auxiliary member 58 is coaxially arranged with the rotating gear 72. At this time, the transmission auxiliary member 58, the transmission rod 56 and the rotating link 57 jointly form a structure for transmitting the rotational force of the drive motor 34 and driving the transmission gear 54 to rotate. And by providing the transmission auxiliary member 58, when indirectly driving the transmission gear 54 by the drive motor 34, the effective energy consumption of the drive motor 34 is higher, reducing the drive cost.

[0051] To ensure the relative position between the first rotating rod 52 and the second rotating rod 53 and avoid deformation of the first rotating rod 52 and the second rotating rod 53 due to driving force or other external forces when the clamping plate 31 on the driving connecting rod 51 clamps the strip steel. In some embodiments, the transmission device 5 further includes a support rod 55. Both ends of the support rod 55 are rotatably connected to the first rotating rod 52 and the second rotating rod 53, and rotate relative to the first rotating rod 52 and the second rotating rod 53 as the connecting rod 51 rotates. Thus, when the drive motor 34 drives the connecting rod 51 to perform an arc motion, the relative distance between the first rotating rod 52 and the second rotating rod 53 will not change, ensuring the stability of the entire transmission device 5 for driving the clamping plate 31.

[0052] It can be understood that since the lifting and clamping device 3 is fixed on the tractor 2 through the fixed frame 33. To ensure that the lifting and clamping device 3 can be stably fixed on the tractor 2. In some embodiments, the fixed frame 33 further includes a stabilizing rod 59, which is used to assist in fixedly connecting to the tractor 2. The angle between the stabilizing rod 59 and the fixed frame 33 is an acute angle, sharing part of the weight of the transmission device 5 and avoiding damage to the fixed frame 33 when the mass of the transmission device 5 is too large, thereby affecting the function of the entire lifting and clamping device 3.

[0053] Furthermore, in some embodiments, the fixing frame 33 also includes a mounting foot 6, which is disposed at the bottom of the fixing frame 33 and the stabilizing bar 59 and connected to the tractor 2. By providing the mounting foot 6, the contact area between the fixing frame 33 and the stabilizing bar 59 and the tractor 2 is further increased, thereby dispersing the force of the lifting and clamping device 3 on the tractor 2, further avoiding the possibility of the lifting and clamping device 3 causing damage to the tractor 2 or the entire strip transmission device.

[0054] Since the strip steel production line is usually wide and the functions of different areas are also different, the actual environment of the entire production line is relatively complex. Therefore, in some embodiments, the lifting and clamping device 3 also includes a heat insulation component (not shown), which is arranged outside the transmission device 5. Specifically, the heat insulation component can be a ceramic fiber board, which is wrapped around the outside of the entire transmission device 5 to prevent the external hotter airflow from entering the transmission device 5, thereby preventing the internal structure from being affected by the temperature, and further affecting the transmission and curling of the entire strip steel.

[0055] The present invention discloses a strip steel leading method, which is applicable to any of the strip steel leading systems mentioned above, and comprises the following execution steps:

[0056] Step S1: After detecting the start signal, control the tractor 2 to start from the initial position and travel along the track 1. The start signal may be a signal from the end mill and a fork signal received by the control device. At this time, the strip passes through the end mill, enters the strip conveyor, and is transported on the flat chain.

[0057] Furthermore, in some application scenarios, a communication busbar is provided on the track 1 for transmitting a start signal. When the strip passes through the terminal rolling mill, the tractor 2 receives the start signal and starts from the initial position, and starts to move along the track 1 toward the head of the strip. The initial position may be the exit of the strip three-way area, or it may be set at other positions on the track 1 according to actual needs.

[0058] Step S2: in response to the strip head exceeding the preset distance of the guide device 4, the guide plate 41 is controlled to open.

[0059] In some application scenarios, the preset position can be set according to actual needs. When the steel strip enters the guide device 4, the angle of the guide groove 43 is small, the oscillation amplitude of the steel strip is small, and the curvature of the steel strip is small when it is transported on the flat chain. At this time, the front end of the steel strip is more conducive to clamping by the lifting clamping device 3. After the guide plate 41 is opened, the angle of the guide groove 43 is large, and the oscillation amplitude of the steel strip becomes larger, so that the steel strip can be transported on the flat chain in an S-shape with a larger angle, so that the flat chain of the steel strip transmission device can accommodate more steel strips, and the transmission efficiency of the steel strip is improved.

[0060] Step S3: When it is detected that the tractor 2 reaches the first preset position, control the clamping plate 31 of the lifting and clamping device 3 to descend and gradually approach the strip steel.

[0061] In some application scenarios, when the strip steel is transported on the flat chain, the tractor 2 starts to run from the initial position and chases the head of the strip steel. Among them, when the tractor 2 reaches the first preset position, that is, the position where the oscillation amplitude of the front end of the strip steel is relatively small, the control device controls the clamping plate 31 on the lifting and clamping device 3 to move downward and approach the strip steel, so as to straighten the strip steel with a relatively small oscillation amplitude.

[0062] It can be understood that at this time, the running speed of the tractor 2 is still greater than the transportation speed of the flat chain. The tractor 2 continues to chase the head of the strip steel and gradually straightens the front end of the strip steel, ensuring the flatness of the strip steel, and thus ensuring the coiling effect when the strip steel is fed into the coiling device.

[0063] Step S4: In response to the first sensor on the tractor 2 detecting the strip steel signal and the second sensor on the tractor 2 not detecting the strip steel signal, control the clamping plate 31 to clamp the strip steel, and control the tractor 2 to run at the same speed as the strip steel. Among them, the first sensor is used to detect the strip steel behind the running direction of the tractor 2, and the second sensor is used to detect the strip steel in front of the running direction of the tractor 2.

[0064] In some application scenarios, the first sensor and the second sensor set on the tractor 2 can be laser sensors, both of which are used to detect the strip steel signal. When the first sensor on the tractor 2 detects the strip steel signal and the second sensor on the tractor 2 does not detect the strip steel signal, at this time, the tractor 2 has completed chasing the head of the strip steel. When the front end of the tractor 2 can no longer sense the strip steel signal, the control device controls the transmission device 5 of the lifting and clamping device 3 to drive the clamping plate 31 to approach and clamp the clamping plate 31.

[0065] Furthermore, in order to prevent the clamping plate 31 from moving relative to the strip steel when the tractor 2 drives the lifting and clamping device 3 to move together with the flat chain after the clamping plate 31 clamps the strip steel, the control device controls the tractor 2 to adjust its speed and run at the same speed as the strip steel at this time, so that the clamping plate 31 does not move relative to the strip steel, avoiding abrasion of the strip steel by the clamping plate 31 and thus affecting the quality of the entire strip steel.

[0066] Step S5: In response to the tractor 2 reaching the second preset position, control the clamping plate 31 to open and lift, and control the tractor 2 to return to the initial position.

[0067] In some application scenarios, the second preset position is the end of the flat chain, that is, when the tractor 2 drives the strip steel to run simultaneously and reaches the end of the flat chain, the lifting and clamping device 3 releases the clamping plate 31 and rises to the highest point, and the tractor 2 moves in the opposite direction along the track 1, that is, returns to the initial position toward the exit direction of the Sancha area, completing a transport of the strip steel.

[0068] It is understandable that since the tractor 2 starts from the initial position and chases and clamps the head of the steel strip, and when the splint 31 contacts the steel strip, the splint 31 straightens the steel strip. In order to avoid the high speed of the tractor 2 when the splint 31 is straightening the steel strip, causing the splint 31 to wear the steel strip, in some application scenarios, in response to the steel strip head exceeding the preset distance of the guide device 4, the guide plate 41 is controlled to open. Before that, it also includes: after controlling the tractor 2 to accelerate to the first preset speed, the tractor 2 is controlled to travel at a uniform speed. Among them, the first preset speed needs to be greater than the transportation speed of the flat chain. At this time, the relative movement between the tractor 2 and the splint 31 and the steel strip is also uniform, which further avoids the possibility of the splint 31 wearing the steel strip and ensures the quality of the steel strip.

[0069] Further, after the tractor 2 has completed the pursuit of the head of the steel strip, it is necessary to clamp the steel strip and run at the same speed as the steel strip. In some application scenarios, in response to the first sensor on the tractor 2 detecting the steel strip signal, and the second sensor on the tractor 2 not detecting the steel strip signal, the clamping plate 31 is controlled to clamp the steel strip, and the tractor 2 is controlled to run at the same speed as the steel strip. It also includes: in response to the first sensor on the tractor 2 detecting the steel strip signal, and the second sensor on the tractor 2 not detecting the steel strip signal, the clamping plate 31 is controlled to clamp the steel strip. At this time, the tractor 2 has completed the pursuit of the head of the steel strip. When the front end of the tractor 2 can no longer sense the steel strip signal, the tractor 2 is controlled to decelerate to run at the same speed as the steel strip, and the clamping plate 31 is controlled to clamp the steel strip, which further ensures that when the clamping plate 31 clamps the steel strip, the clamping plate 31 is already relatively stationary with the steel strip under the drive of the tractor 2, thereby avoiding the clamping plate 31 causing wear on the steel strip due to the relative movement between the two when the clamping plate 31 clamps the steel strip.

[0070] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A strip leading system, characterized in that, Comprising: A track, arranged above the strip conveying device; A tractor, arranged on the track; A lifting and clamping device, installed on the tractor, with two opposite clamping plates at the lower end; A guiding device, arranged at the front end of the strip conveying device, including two guiding plates and a driving device for driving the two guiding plates to open and close, and a guiding groove for the strip to pass through is formed between the two guiding plates; A control device, connected to the tractor, the lifting and clamping device and the guiding device.

2. The strip leading system according to claim 1, characterized in that The guiding device further includes a connecting rod and an adjusting device, the two guiding plates are respectively arranged on both sides of the adjusting device, the connecting rod is rotatably connected to the adjusting device and the guiding plate, the adjusting device is connected to the driving device and the control device, and opens and closes the guiding plate under the control of the control device and the driving device.

3. The strip leading system according to claim 2, characterized in that The adjusting device includes a hydraulic cylinder, and the hydraulic cylinder is rotatably connected to the connecting rod.

4. The strip leading system according to claim 1, characterized in that The tractor further includes a traveling wheel and a guiding wheel arranged at the lower end of the vehicle body, the traveling wheel is slidably arranged on the surface of the track, and the guiding wheel is slidably arranged on the side surface of the track.

5. The strip leading system according to claim 4, characterized in that The guiding wheel includes at least two, the two guiding wheels are located on the side walls at both ends of any one track, and the two guiding wheels are arranged in parallel.

6. The strip leading system according to claim 1, characterized in that The lifting and clamping device further includes a transmission device, a fixing frame and a driving motor, the fixing frame is installed on the tractor, and the transmission device is installed on the fixing frame and connected to the motor and the clamping plate.

7. The strip leading system according to claim 6, characterized in that The transmission device includes two connecting rods, two first rotating rods, two second rotating rods and two meshing transmission gears, the two transmission gears are rotatably arranged on the fixing frame and connected to the motor, one end of the connecting rod is connected with the clamping plate, one end of the first rotating rod is fixedly connected to the shaft of the transmission gear, the other end of the first rotating rod is rotatably connected to the connecting rod, one end of the second rotating rod is rotatably connected to the fixing frame, and the other end of the second rotating rod is rotatably connected to the connecting rod.

8. A strip leading method, characterized in that, Applicable to the strip leading system according to any one of claims 1-7 above, including the following execution steps: After detecting the start signal, control the tractor to start and travel along the track from the initial position; In response to the strip head exceeding the preset distance of the guiding device, control the guiding plate to open; Detect that the tractor reaches the first preset position, and control the clamping plate of the lifting and clamping device to descend and gradually approach the strip; In response to the first sensor on the tractor detecting a strip steel signal and the second sensor on the tractor not detecting a strip steel signal, control the clamping plate to clamp the strip steel and control the tractor to run at the same speed as the strip steel; the first sensor is used to detect the strip steel behind the running direction of the tractor, and the second sensor is used to detect the strip steel in front of the running direction of the tractor. In response to the tractor reaching the second preset position, control the clamping plate to open and lift, and control the tractor to return to the initial position.

9. The strip leading method according to claim 8, characterized in that, Before the step of, in response to the strip steel head exceeding the preset distance of the guiding device, controlling the guiding plate to open, further includes: Control the tractor to accelerate to the first preset speed and then control the tractor to travel at a constant speed.

10. The strip leading method according to claim 8, wherein, The step of, in response to the first sensor on the tractor detecting a strip steel signal and the second sensor on the tractor not detecting a strip steel signal, controlling the clamping plate to clamp the strip steel and controlling the tractor to run at the same speed as the strip steel, further includes: In response to the first sensor on the tractor detecting a strip steel signal and the second sensor on the tractor not detecting a strip steel signal, control the tractor to decelerate to the same speed as the strip steel and then control the clamping plate to clamp the strip steel.

Images