Lifting and clamping device for strip steel

Abstract

The utility model relates to strip steel processing technical field, specifically, relate to a kind of strip steel's lifting clamping device, lifting clamping device includes two clamps and drive motor, the opposite side of two clamps is provided with the opposite rolling roller, when two clamps hold strip steel, rolling roller rotates under the impetus of strip steel, further guarantee when clamp holds strip steel and drives strip steel to run, if still have relative motion between clamp and strip steel, can make strip steel still be moved a distance between clamp by the rolling of rolling roller, until no longer relative movement between clamp and strip steel, avoid that clamp produces abrasion to strip steel, guarantee the curling quality of strip steel. Drive motor output end and two clamps transmission, can drive two clamps mutually close or mutually far away, complete the clamping and put down to strip steel.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, specifically to a lifting and clamping device for steel strip. Background Technology

[0002] In the hot rolling production line, the strip coiling operation is an important part. After the formed steel exits the rolling mill, it is buffered on the plate chain conveyor by a serpentine oscillator. This process causes the strip to be stacked on the plate chain conveyor in an S-shape. During the oscillation process, the strip head may be in different states such as upright, attached to the wall, close together, bent back, or lying obliquely, making it difficult to automatically enter the finishing rolls of the subsequent coiler.

[0003] In the prior art, when the strip steel is pulled into the finishing roll of the coiler along the walking direction of the plate chain conveyor using a clamping device, there is often a certain speed difference between the clamping device and the plate chain, which may cause relative movement between the clamping device and the strip steel, thus affecting the quality of the strip steel coil. Utility Model Content

[0004] This utility model is made to solve the above-mentioned technical problems. Its purpose is to provide a lifting and clamping device for strip steel. By setting rolling rollers on the clamping plate, the speed difference between the clamping plate and the strip steel is avoided, which would cause damage to the strip steel.

[0005] To achieve the above objectives, this utility model provides a lifting and clamping device for steel strip, comprising: two clamping plates, with opposing rolling rollers arranged on opposite sides of the two clamping plates; when the two clamping plates clamp the steel strip, the rolling rollers rotate under the push of the steel strip; and a drive motor, the output end of which drives the two clamping plates to move closer to or further away from each other.

[0006] Preferably, the device further includes a transmission mechanism connected to the drive motor and the clamping plate. This mechanism includes two connecting rods, two first rotating rods, two second rotating rods, a fixed frame, and two meshing transmission gears. The two transmission gears are rotatably mounted on the fixed frame and connected to the motor. One end of each connecting rod is connected to the clamping plate. One end of each first rotating rod is fixedly connected to the shaft of the transmission gear, and the other end of the first rotating rod is rotatably connected to the connecting rod. One end of each second rotating rod is rotatably connected to the fixed frame, and the other end of the second rotating rod is rotatably connected to the connecting rod.

[0007] Preferably, the connecting rod and the fixing frame are arranged in parallel, and the first rotating rod and the second rotating rod are arranged in parallel.

[0008] Preferably, the central angle of the transmission gear is not less than 90 degrees.

[0009] Preferably, the transmission device further includes a support rod, the two ends of which are rotatably connected to the first rotating rod and the second rotating rod.

[0010] Preferably, the transmission device further includes a transmission rod and a rotating connecting rod, the rotating connecting rod being fixedly connected to the motor, one end of the transmission rod being rotatably connected to the rotating connecting rod, and the other end of the transmission rod being fixedly connected to the shaft of the transmission gear.

[0011] Preferably, it further includes a transmission auxiliary component, which is disposed on the fixed frame and rotatably connected to the transmission rod, and the transmission auxiliary component is coaxially disposed with the transmission gear.

[0012] Preferably, the fixing frame further includes a stabilizing rod, and the angle between the stabilizing rod and the fixing frame is an acute angle.

[0013] Preferably, it also includes friction pads disposed on opposite sides of the two clamping plates.

[0014] Preferably, it also includes a tractor; and a control device connected to the tractor and the drive motor, which controls the tractor to drive the drive motor, the clamp and the strip to move at the same speed after the clamping plate holds the strip.

[0015] Based on the above description and practice, the strip lifting and clamping device of this utility model includes two clamping plates and a drive motor. Relative-positioned rolling rollers are arranged on opposite sides of the two clamping plates. When the two clamping plates clamp the strip, the rolling rollers rotate under the push of the strip. This further ensures that when the clamping plates clamp and move the strip, if there is still relative movement between the clamping plates and the strip, the rolling rollers can allow the strip to move a certain distance between the clamping plates until the relative movement between the clamping plates and the strip ceases, thus avoiding wear on the strip and ensuring the coiling quality of the strip. The output end of the drive motor drives the two clamping plates, enabling them to move closer or further apart, completing the clamping and lowering of the strip. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the lifting and clamping device of the strip steel leading system in one embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the guiding device of the strip steel leading system in one embodiment of the present invention.

[0019] Figure 4 This is a side view of a lifting clamping device in one embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the lifting and clamping device in one embodiment of the present invention.

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

[0022] Figure 7 This is a schematic diagram of the drive equipment of a strip steel tractor in one embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the drive equipment of a strip steel tractor in another embodiment of the present invention.

[0024] Figure 9 This is a top view of a tractor vehicle involving a strip steel lead-in system in one embodiment of the present invention.

[0025] Figure 10 This is a flowchart of a strip steel leading method in one embodiment of the present invention.

[0026] Figure 11 This is a time diagram showing the motion patterns of the strip and the tractor in a strip steel leading system, as described in one embodiment of this utility model.

[0027] Figure 12 This is a schematic diagram showing the travel speed of the strip and the tractor in one embodiment of the present invention, involving a strip leading system. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these 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 this disclosure will be more comprehensive and complete, and will fully convey the concept 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] Furthermore, the accompanying drawings are merely illustrative diagrams of this utility model and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. It should be noted that in this utility model disclosure, the terms "comprising," "configured with," and "set in" are used to indicate an open-ended inclusion, meaning that additional elements / components / etc. may exist besides those listed; the terms "first," "second," etc., are used only as labels and are not intended to limit the number or order of objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] This utility model discloses a strip steel lead-in system. Please refer to [reference needed]. Figures 1 to 12The strip steel leading system includes a track 1, a traction vehicle 2, a lifting and clamping device 3, and a guiding device 4. The track 1 is positioned above the strip steel conveying device. The traction vehicle 2 is mounted on the track 1 and is used to position the lifting and clamping device 3 and the guiding device 4 together above the strip steel conveying device for processing the strip steel. The lifting and clamping device 3 is installed on the traction vehicle 2 and has two opposing clamping plates 31 at its lower end. The clamping plates 31, driven by the traction vehicle 2, move along the strip steel and clamp the head of the strip steel, conveying it to the clamping rollers. The guiding device 4 is located at the front end of the strip steel conveying device and includes two guide plates 41 and a driving device 42 that drives the two guide plates 41 to open and close. A guide groove 43 is formed between the two guide plates 41 for the strip steel to pass through. Initially, the guide plates 41 are not deployed on the strip steel conveying device. After a period of time, the guide plates 41 deploy, causing a larger amplitude oscillation of the strip steel, allowing it to be contained in a larger S-shape on the strip steel conveying device. When the strip head oscillates within the guide groove 43, its oscillation amplitude is relatively small, making it easier for the clamping device to hold the strip head and feed it into the clamping rollers. The control device is connected to the traction vehicle 2, the lifting clamping device 3, and the guide device 4 to control the operation of the entire strip leading system, ensuring that the strip leading system cooperates with the entire rolling system and thus guaranteeing the production quality of the strip.

[0032] In some embodiments, the tractor 2 further includes a drive unit 7 and sensors (not shown). The drive unit 7 is connected to the vehicle body 23 and directly drives the entire vehicle body 23, causing the tractor 2 to travel along the track 1. Two sensors are configured: a first sensor detects the presence of strip steel at the front end of the vehicle body 23, and a second sensor detects the presence of strip steel at the rear end. Driven by the drive unit 7, the vehicle body 23 slides along the track 1. When the first sensor does not detect a signal indicating no strip steel at the front end and the second sensor detects a signal indicating the presence of strip steel at the rear end, the lifting clamping device 3 descends and clamps the strip steel, allowing it to slide along the track 1 together. This clamps the head of the strip steel, enabling it to enter the coiling device at a specific angle, thereby ensuring the quality of the strip steel coiling.

[0033] Understandably, given the typically large size and complex environment of the entire strip steel production line, to prevent interference from other strip steel production processes from the direct driving and control of the tractor 2 by the drive device 7, in some embodiments, the drive device 7 includes a motor 71, a rotating gear 72, and a rack 73. The rotating gear 72 and the rack 73 mesh, the motor 71 is connected to the rotating gear 72, and the rack 73 is mounted on the track 1. Driven by the motor 71, the tractor 2 is moved 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, the rotating gear 72 may slip or break under overload conditions, thus 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 to low speed and high torque. Furthermore, the maintenance and replacement of the rack 73 and the rotating gear 72 are simpler and more convenient, resulting in lower maintenance costs and greater cost savings.

[0034] Understandably, in order to simultaneously control the opening and closing of the guide plates 41 on both sides using a single drive device 42, in some embodiments, the guide device 4 further includes a connecting rod 44 and an adjusting device 45. The two guide plates 41 are respectively disposed on both sides of the adjusting device 45. The connecting rod 44 is rotatably connected to the adjusting device 45 and the guide plates 41. The adjusting device 45 is connected to the drive device 42 and the control device, and opens and closes the guide plates 41 under the control of the control device and the drive device 42. Specifically, the control device controls the drive device 42 to open, and the movement of the connecting rod 44 drives the guide plates 41 to open or close, thereby adjusting the opening angle of the guide groove 43 to achieve different oscillation angles for the strip steel. Furthermore, the opening angle of the guide plates 41 can be adjusted by the control device according to actual needs, making the entire strip steel leading system applicable to various strip steel conveying devices with different widths and oscillation requirements.

[0035] Furthermore, in some embodiments, rolling rollers 32 with opposite positions are provided on 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. This further ensures 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 rolling rollers 32 can make the strip move a certain distance between the clamping plates 31 until there is no longer relative movement between the clamping plates 31 and the strip. This avoids wear on the strip caused by the clamping plates 31 and ensures the coiling quality of the strip.

[0036] Understandably, in order to ensure the clamping effect of the clamping plate 31 on the strip, in some embodiments, the clamping plate 31 also includes friction plates (not shown), which are disposed on opposite sides of the two clamping plates 31. When the clamping plate 31 approaches the strip and clamps the strip, the friction between the clamping plate 31 and the strip is increased by the action of the friction plates, thereby ensuring the clamping effect of the clamping plate 31 on the strip and preventing the strip from slipping out of the clamping plate 31, causing wear on the strip, and affecting the efficiency of strip transportation and coiling.

[0037] In some embodiments, the adjusting device 45 includes a hydraulic cylinder 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 unfolding the guide plate 41. When it is necessary to close the guide plate 41, the hydraulic cylinder retracts, causing the connecting rod 44 to rotate in the opposite direction, thereby closing the guide plate.

[0038] Understandably, in order to ensure that the traction vehicle 2 can operate stably on the track 1 and not deviate due to the reaction force of the strip steel when the strip steel leading system moves above the strip steel conveying device, in some embodiments, the traction vehicle 2 also includes a traveling wheel 21 and a guide wheel 22 set at the lower end of the vehicle body 23. The traveling wheel 21 is slidably set on the surface of the track 1 to ensure that the traction vehicle 2 can move along the upper surface of the track 1. The guide wheel 22 is slidably set 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, which plays a guiding role for the traction vehicle 2, further ensuring that the traction vehicle 2 follows the running trajectory, and preventing the traction vehicle 2 from deviating under the reaction force of the strip steel when it drives the lifting clamping device 3 to clamp the strip steel, thereby affecting the subsequent coiling of the strip steel.

[0039] Furthermore, to ensure the guiding effect of the guide wheels 22 on the entire tractor 2, in some embodiments, at least two guide wheels 22 are included. The two guide wheels 22 are located on the sidewalls at both ends of any track 1, and are arranged in parallel, jointly clamping the track 1 and running along the sidewalls of the track 1. It is understood that the two guide wheels 22 are arranged on the same plane to prevent instability of the tractor 2's center of gravity due to the clamping forces not being on the same plane during movement, thus affecting the straightening and clamping of the strip by the lifting clamping device 3 on the tractor 2. In addition, when other structures are additionally provided on the track 1 that obstruct the guide wheels 22, the two guide wheels 22 may not be arranged on the same plane to avoid these other structures on the track 1, thereby ensuring the dual-sided 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 excessive speed causing instability of the tractor 2's center of gravity.

[0040] Understandably, in order to ensure the guiding function of the guide wheel 22 and prevent the tractor 2 from deviating during guidance, in some embodiments, the axis of the guide wheel 22 is perpendicular to the axis of the traveling wheel 21. This ensures 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 it travels along the track 1.

[0041] Furthermore, in some embodiments, two guide wheels 22 are located on both sides of the vehicle body 23, respectively set at the two ends of the track 1 that are far apart from each other. That is to say, at this time, the two guide wheels 22 set on both sides of the vehicle body 23 not only achieve the guiding function, but also achieve the clamping function of the tractor 2 on the track 1, further preventing the tractor 2 from leaving the track 1 due to the influence of external forces when it is traveling on the track 1, which would affect the transportation and coiling of the strip steel.

[0042] In other embodiments, two guide wheels 22 are located on the same side of the vehicle body 23 and are positioned at both ends of the traveling wheels 21, thus clamping the track 1 on one side and stabilizing the tractor 2. This prevents the tractor 2 from derailing from the track 1 due to external forces while traveling along the track 1. Simultaneously, it also avoids other structures on the other side of the track 1, preventing the guide wheels 22 from being blocked by other structures while the tractor 2 is traveling along the track 1, which could cause the tractor 2 to deviate during transport.

[0043] In other embodiments, the two guide wheels 22 are located on the same side of the vehicle body 23 and are set on the same side of the traveling wheels 21. In this case, the two guide wheels 22 are set on one side of the track 1 to achieve the guiding function of the tractor 2 during the movement.

[0044] Understandably, in order to achieve the beneficial effects of the above embodiments, in some additional embodiments, four guide wheels 22 are provided. Along the running direction of the vehicle body 23, they are respectively provided at both ends of the vehicle body 23, and two guide wheels 22 on the same side are respectively provided at both ends of the traveling wheels 21. This achieves the clamping of the track 1 to ensure stability, while ensuring the guiding function of the tractor 2 during the movement. In addition, with four guide wheels 22, the center of gravity of the entire tractor 2 is further ensured to be stable, avoiding the tractor 2 from being deflected by external forces when moving with the strip steel, which would cause damage to the strip steel and affect the transportation and coiling efficiency and quality of the strip steel.

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

[0046] Furthermore, 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 mounted on the fixed frame 33 and connected to the motor 71. One end of the connecting rod 51 is connected to the clamping plate 31. One end of the first rotating rod 52 is fixedly connected to the shaft of the transmission gear 54, and 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, and the other end of the second rotating rod 53 is rotatably connected to the connecting rod 51. The transmission gears 54 are driven to rotate by the motor 71. The meshing 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 clamping plate 31 is raised and lowered. Furthermore, since the clamping plate 31 is mounted on the connecting rod 51, the connecting rod 51 rotates in an arc shape under the drive of the first rotating rod 52 and the second rotating rod 53. This allows the clamping plate 31 to gradually approach and reach the head of the strip as it descends, thereby clamping the head of the strip. This further ensures the straightening and clamping of the strip, guarantees the flatness of the strip when it is fed into the coiling device, and improves the quality of the strip coiling.

[0047] In some embodiments, the connecting rod 51 and the fixing 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. This is more conducive to the transmission device 5 driving the clamping plates 31 on both sides to move closer to each other and to fully clamp the strip steel under the drive of the drive motor 34. This avoids the strip steel from slipping out of the clamping plates 31 due to unstable clamping of the strip steel, which would not only cause wear on the surface of the strip steel, but also affect the strip steel transportation efficiency and coiling quality.

[0048] To ensure that the two meshing transmission gears 54 can smoothly drive the connecting rod 51 and the clamping plate 31 below the connecting rod 51 to rotate and approach each other, and to ensure that the clamping plate 31 always rotates at a certain angle and clamps 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. This allows the clamping plate 31 to rotate along an arc under the drive of the drive motor 34, the transmission gear 54, the first rotating rod 52, and the second rotating rod 53. This achieves the raising and lowering of the clamping plate 31, as well as the moving away and approaching of the clamping plates 31. Compared with the traditional structure that requires two devices to control the raising, lowering, and clamping of the clamping plate 31 separately, this reduces the structural weight on the tractor 2 and avoids the excessive weight of the tractor 2 from having additional impact on the strip steel transmission device.

[0049] To reduce the weight on the tractor 2, the drive motor 34 can be mounted on the track 1. In some embodiments, the transmission device 5 also includes a transmission rod 56 and a rotating connecting rod 57. The rotating connecting rod 57 is fixedly connected to the drive motor 34, one end of the transmission rod 56 is rotatably connected to the rotating connecting rod 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 a linear driving force of the transmission rod 56 through the rotating connecting rod 57, which in turn drives the transmission gear 54 to rotate and drive the clamping plate 31 on the connecting rod 51 to make an arc-shaped movement, approaching and clamping the strip steel.

[0050] Furthermore, in some embodiments, a transmission auxiliary component 58 is also included, which is disposed on the fixed frame 33 and rotatably connected to the transmission rod 56. The transmission auxiliary component 58 is coaxially disposed with the rotating gear 72. In this case, the transmission auxiliary component 58, the transmission rod 56 and the rotating connecting rod 57 together form a structure for transmitting the rotational force of the drive motor 34 and driving the transmission gear 54 to rotate. Moreover, by providing the transmission auxiliary component 58, when the drive motor 34 indirectly drives the transmission gear 54, the effective energy consumption of the drive motor 34 is higher, and the drive cost is reduced.

[0051] To ensure the relative position between the first rotating rod 52 and the second rotating rod 53, and to prevent 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, in some embodiments, the transmission device 5 further includes a support rod 55. The two 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. This ensures that the relative distance between the first rotating rod 52 and the second rotating rod 53 does not change when the driving motor 34 drives the connecting rod 51 to perform arc-shaped movements, thus ensuring the stability of the entire transmission device 5 for the transmission of the clamping plate 31.

[0052] Understandably, since the lifting clamping device 3 is fixed to the tractor 2 by the fixing frame 33, in order to ensure that the lifting clamping device 3 can be stably fixed to the tractor 2, in some embodiments, the fixing frame 33 also includes a stabilizing rod 59, which is used to assist in the fixed connection to the tractor 2. The angle between the stabilizing rod 59 and the fixing frame 33 is an acute angle, which shares part of the weight of the transmission device 5 and avoids damage to the fixing frame 33 when the mass of the transmission device 5 is too large, thereby affecting the function of the entire lifting clamping device 3.

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

[0054] Since strip steel production lines are typically spacious and different areas have different functions, the actual environment of the entire production line is quite complex. Therefore, in some embodiments, the lifting and clamping device 3 also includes a heat insulation component (not shown) which is installed outside the transmission device 5. Specifically, the heat insulation component can be a ceramic fiber board that wraps around the outside of the entire transmission device 5 to prevent hot external airflow from entering the transmission device 5 and to prevent the internal structure from being affected by temperature, thereby affecting the transmission and coiling of the entire strip steel.

[0055] This utility model discloses a strip steel leading method, applicable to any of the strip steel leading systems described above, comprising the following steps:

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

[0057] Furthermore, in some application scenarios, a communication sliding contact line is installed on track 1 to transmit a start signal. When the strip passes through the end mill, the tractor 2 receives the start signal and starts from the initial position, traveling along track 1 towards the head of the strip. The initial position can be the exit of the strip's three-way junction, or it can be set at other positions on track 1 according to actual needs.

[0058] Step S2: In response to the steel head exceeding the preset distance of the guide device 4, control the guide plate 41 to open.

[0059] In some application scenarios, the preset position can be set according to actual needs. When the strip enters the guide device 4 for oscillation, the oscillation amplitude of the strip is small because the angle of the guide groove 43 is small. As the strip is transported on the flat chain, its curvature is small, making it easier for the front end of the strip to be clamped by the lifting clamping device 3. After the guide plate 41 opens, the angle of the guide groove 43 becomes larger, and the oscillation amplitude of the strip increases. This allows the strip to be transported on the flat chain in a larger S-shape, enabling the flat chain of the strip conveying device to accommodate more strip and improving the strip conveying efficiency.

[0060] Step S3: When the tractor 2 is detected to have reached the first preset position, the clamping plate 31 of the lifting clamping device 3 is controlled 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 from the initial position and chases the head of the strip steel. When the tractor 2 reaches the first preset position, which is the position where the front end of the strip steel has a smaller oscillation amplitude, the control device controls the clamping plate 31 on the lifting clamping device 3 to move downward and approach the strip steel to straighten the strip steel with a smaller oscillation amplitude.

[0062] Understandably, at this time, the operating speed of the tractor 2 is still greater than the transport speed of the flat chain. The tractor 2 continues to chase the head of the strip and gradually straightens the front end of the strip, ensuring the flatness of the strip, and thus ensuring the curling effect when the strip is sent into the curling device.

[0063] Step S4: In response to the first sensor on the tractor 2 detecting a strip signal and the second sensor on the tractor 2 not detecting a strip signal, the control clamp 31 clamps the strip, and the tractor 2 is controlled to run at the same speed as the strip. The first sensor is used to detect the strip behind the tractor 2 in its direction of travel, and the second sensor is used to detect the strip in front of the tractor 2 in its direction of travel.

[0064] In some application scenarios, the first and second sensors installed on the tractor 2 can be laser sensors, both used to detect strip signals. When the first sensor on the tractor 2 detects a strip signal but the second sensor does not, the tractor 2 has completed chasing the head of the strip. When the front end of the tractor 2 can no longer sense a strip signal, the control device controls the transmission device 5 of the lifting clamping device 3 to move the clamping plate 31 closer and clamp it.

[0065] Furthermore, to prevent relative movement between the clamping plate 31 and the strip steel when the tractor 2 moves together with the lifting clamping device 3 and 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, so that the clamping plate 31 and the strip steel do not move relative to each other, thus avoiding wear on the strip steel caused by the clamping plate 31, which would affect the overall quality of the strip steel.

[0066] Step S5: In response to the tractor 2 reaching the second preset position, control the clamp 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 at the same time and reaches the end of the flat chain, the lifting clamping device 3 releases the clamp 31 and rises to the highest point. The tractor 2 moves in the opposite direction along the track 1, that is, returns to the initial position in the direction of the exit of the three-way area, and completes one transport of strip steel.

[0068] Understandably, since the tractor 2 starts from the initial position and chases and clamps the strip head, and after the clamping plate 31 contacts the strip, the clamping plate 31 straightens the strip. To prevent the clamping plate 31 from wearing down the strip due to the high speed of the tractor 2 during straightening, in some application scenarios, in response to the strip head exceeding the preset distance of the guide device 4, the guide plate 41 is controlled to open. Before this, the tractor 2 is controlled to accelerate to a first preset speed and then controlled to travel at a constant speed. The first preset speed must be greater than the transport speed of the flat chain. At this time, the relative movement between the tractor 2 and the clamping plate 31 and the strip is also uniform, further avoiding the possibility of wear on the strip by the clamping plate 31 and ensuring the quality of the strip.

[0069] Furthermore, after the tractor 2 completes its pursuit of the strip head, it needs to clamp the strip and run at the same speed as the strip. In some application scenarios, in response to the first sensor on the tractor 2 detecting a strip signal but the second sensor on the tractor 2 not detecting a strip signal, the clamping plate 31 is controlled to clamp the strip, and the tractor 2 is controlled to run at the same speed as the strip. This also includes: in response to the first sensor on the tractor 2 detecting a strip signal but the second sensor on the tractor 2 not detecting a strip signal, the clamping plate 31 is controlled to clamp the strip. At this point, the tractor 2 has completed its pursuit of the strip head. When the front end of the tractor 2 can no longer sense a strip signal, the tractor 2 is controlled to decelerate to run at the same speed as the strip, and then the clamping plate 31 is controlled to clamp the strip. This further ensures that when the clamping plate 31 clamps the strip, it is already relatively stationary with the strip under the drive of the tractor 2, thus avoiding wear caused by the relative motion between the clamping plate 31 and the strip during clamping.

[0070] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lifting and clamping device for steel strip, characterized in that, include: Two clamping plates are provided with opposing rolling rollers on opposite sides of the two clamping plates. When the two clamping plates clamp the strip steel, the rolling rollers rotate under the push of the strip steel. The drive motor, whose output end is connected to the two clamping plates, can drive the two clamping plates to move closer to each other or further apart.

2. The strip lifting and clamping device as described in claim 1, characterized in that, Also includes: The transmission device, connected to the drive motor and the clamping plate, includes two connecting rods, two first rotating rods, two second rotating rods, a fixed frame, and two meshing transmission gears. The two transmission gears are rotatably mounted on the fixed frame and connected to the motor. One end of each connecting rod is connected to the clamping plate. One end of each first rotating rod is fixedly connected to the shaft of the transmission gear, and the other end of the first rotating rod is rotatably connected to the connecting rod. One end of each second rotating rod is rotatably connected to the fixed frame, and the other end of the second rotating rod is rotatably connected to the connecting rod.

3. The strip lifting and clamping device as described in claim 2, characterized in that, The connecting rod and the fixing frame are arranged in parallel, and the first rotating rod and the second rotating rod are arranged in parallel.

4. The strip lifting and clamping device as described in claim 2, characterized in that, The central angle of the transmission gear is not less than 90 degrees.

5. The strip lifting and clamping device as described in claim 4, characterized in that, The transmission device further includes a support rod, which is rotatably connected to the first rotating rod and the second rotating rod.

6. The strip lifting and clamping device as described in claim 2, characterized in that, The transmission device further includes a transmission rod and a rotating connecting rod. The rotating connecting rod is fixedly connected to the motor, one end of the transmission rod is rotatably connected to the rotating connecting rod, and the other end of the transmission rod is fixedly connected to the shaft of the transmission gear.

7. The strip lifting and clamping device as described in claim 6, characterized in that, Also includes: A transmission auxiliary component is mounted on the fixed frame and rotatably connected to the transmission rod. The transmission auxiliary component is coaxially arranged with the transmission gear.

8. The strip lifting and clamping device as described in claim 2, characterized in that, The mounting bracket also includes a stabilizing rod, and the angle between the stabilizing rod and the mounting bracket is an acute angle.

9. The lifting and clamping device for strip steel as described in claim 1, characterized in that, Also includes: Friction plates are disposed on opposite sides of the two clamping plates.

10. The lifting and clamping device for strip steel as described in claim 1, characterized in that, Also includes: Tractor; A control device, connected to the tractor and the drive motor, controls the tractor to drive the drive motor, the clamp and the strip to move at the same speed after the clamping plate holds the strip.

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