Automatic traction system for strip steel rolling on hot rolling production line

Abstract

The utility model relates to an automatic traction system for strip steel rolling in a hot rolling production line. The automatic traction system comprises a sliding rail arranged on a plate link chain of the hot rolling production line in the strip steel conveying direction; a sliding device; a lifting device; a control unit; a trailer wagon device; the trailer wagon device comprises a suspension platform, a front guide mechanism, a rear guide mechanism and a roller mechanism, and the roller mechanism is installed on the suspension platform and used for driving strip steel to move forwards and backwards; the front guide mechanism and the rear guide mechanism are installed on the front portion and the rear portion of the suspension platform respectively and open a channel for strip steel to penetrate through. The front end opening of the front guide mechanism is over against the finishing roller inlet; the rear end of the rear guide mechanism extends to the snake vibration area and is in butt joint with the snake vibration outlet. The front guide mechanism, the rear guide mechanism and the roller mechanism can be integrally and synchronously opened or retracted in the direction perpendicular to the conveying direction of the plate chain. According to the utility model, continuous and stable strip steel conveying can be realized without waiting or pause, and the operation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of hot-rolled strip steel production, in particular to an automatic traction system for coiling strip steel in a hot-rolled production line. Background Art

[0002] In the hot rolling production line, strip coiling operation is an important link. After the formed steel is rolled out, it is buffered on the plate chain conveyor through a serpentine oscillator. This process will cause the strip to be stacked in an S shape on the plate chain conveyor. The strip head may be in different states such as upright, wall-attached, fitted, bent back, and inclined, making it difficult to automatically enter the finishing roller of the subsequent coiling mechanism. It is necessary to manually use long-handled pliers to first correct the position of the strip head, and then pull it along the direction of travel of the plate chain conveyor into the finishing roller of the coiling mechanism for subsequent coiling and packaging operations.

[0003] After the strip is pressed and rolled, it is decelerated and cooled by a snake-shaped oscillator. Even so, the temperature of the cooled strip will reach hundreds of degrees when it is transported on the plate chain. The problems of manual operation under such high temperature are: there are many safety hazards in manual operation. Once an error occurs, it may cause injury to the operator. The high temperature in summer can easily cause heatstroke to the workers. A large amount of manpower investment is not only costly but also labor-intensive, which can easily lead to fatigue of the operator, thus affecting production efficiency. In addition, due to the nature of this part of the work, fewer and fewer people are willing to do this work. The many disadvantages of manual traction can no longer meet the requirements of modern industrial production such as high efficiency, safety, and stable quality. Therefore, it is necessary to seek new technical means to replace manual traction, ensure the safety of workers, reduce labor costs, and improve production efficiency and product quality.

[0004] After the formed steel is rolled out, it passes through the snake vibration area, and the speed of the strip head can reach more than 15m / s, the temperature is about 900℃, and the strip head can remain upright after rushing out for about 3 meters. As time goes by, the strip head is randomly placed on the plate chain conveyor, and the continuously emerging strip steel is stacked in an S shape behind it. In the existing theoretical technology of automatic strip traction, various claw structures are usually designed with reference to the principle of manual use of long-handled clamps to simulate the clamping of the strip steel in an upright state. Affected by high temperature and high speed, coupled with the poor field of vision around the exit, it is difficult for the manipulator to identify and grasp the strip steel at the exit. Therefore, most studies use the manipulator to identify and grasp the upright state of the strip steel after the strip steel speed has decayed. For example, the Chinese utility model patent CN202220586686.7, which was announced on June 21, 2022, provides a robot gripping device for hot-rolled strip steel, which can achieve the "straightening" function in a stable state through a claw on each side; on this basis, the Chinese utility model patent 202222610111.7, which was announced on September 30, 2022, provides a strip steel gripping robot, which is designed with an asymmetric clamping structure of three claws to adapt to the gripping of moving and uncertain strip steel, in order to achieve the straightening and traction operations of the strip steel. In summary, these methods of improving the gripping accuracy by improving the gripping claws have high requirements for the robot process design. In addition, the principle is to wait for the strip steel to be in a vertical state before gripping. Due to the fast steel output speed, dense S-shaped stacking and curling are likely to occur, resulting in the superposition, entanglement and dislocation of the strip steel, which is not conducive to machine vision to identify the state of the strip steel and perform effective gripping. Utility Model Content

[0005] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide an automatic traction system for coiling hot-rolled steel strips in a hot-rolled production line, in which a traction trolley replaces manual traction to realize automatic traction of hot-rolled steel strips. Since the instantaneous speed of the steel strips rushing out of the snake vibration area reaches 15m / s+, the trolley cannot immediately grab the head of the steel strips, so the utility model allows the steel strips to rush out of the traction trolley device and then retract the head of the steel strips at full speed. Specifically, the trolley can be opened and retracted during the movement along the plate chain. When the steel strips just rush out of the snake vibration area, they are still in an upright state. The trolley is opened and waits for steel to be discharged at the exit of the snake vibration area. The steel strips rush out of the channel opened by the trolley. At the same time, the trolley accelerates and retracts the head of the steel strips that rush out, and clamps and tractions them at a reasonable position. The process does not need to consider the posture of the steel strips, ensuring that the steel strips can be accurately grasped in any way, improving the accuracy of grasping the head of the steel strips, and solving the problems of high labor intensity, low efficiency, high cost, high quality control difficulty and safety hazards under high temperature operation caused by manual traction in the production process of hot-rolled steel strips.

[0006] The technical solution adopted by the utility model to solve the technical problem is:

[0007] An automatic traction system for coiling strip steel in a hot rolling production line, the system comprising:

[0008] A slide rail arranged on the plate chain of a hot rolling production line along the conveying direction of the strip;

[0009] A sliding device, used for driving the traction trolley device to move along the slide rail;

[0010] A lifting device, used to lift or lower the traction trolley device;

[0011] A control unit, used to control the working states of the traction trolley device, the lifting device and the sliding device;

[0012] The traction trolley device comprises a suspension platform, a front guide mechanism, a rear guide mechanism and a roller mechanism. The suspension platform is used to provide an installation space. The roller mechanism is installed on the suspension platform to drive the strip to move forward and backward. The front guide mechanism and the rear guide mechanism are respectively installed at the front and rear of the suspension platform, and the two are opened to provide a passage for the strip to pass through.

[0013] The grabbing part of the front guide mechanism is used to capture the strip head, and the front end opening of the front guide mechanism is directly facing the entrance of the finishing roller, so that the strip can be easily guided into the finishing roller;

[0014] The rear end of the rear guide mechanism extends to the snake vibration area and docks with the snake vibration outlet, so that the strip steel can directly rush into the channel opened by the trolley from the snake vibration area;

[0015] The front guide mechanism, the rear guide mechanism and the roller mechanism can be synchronously opened or retracted in a direction perpendicular to the conveying direction of the plate chain as a whole.

[0016] The suspension platform includes a high temperature resistant flat plate, two symmetrically distributed transverse drive mechanisms, two symmetrically distributed transverse drive connecting plates, two symmetrically distributed baffles, and four supporting screws;

[0017] The surface of the high temperature resistant plate is provided with rectangular openings perpendicular to the conveying direction of the strip steel, the rectangular openings are in the form of through holes, and baffles are vertically fixed on both sides of the lower surface of the high temperature resistant plate;

[0018] The upper surface of the high temperature resistant plate is connected to the lifting device; the lower surface of the high temperature resistant plate and the area between the two baffles are fixedly connected to two transverse driving mechanisms, the two transverse driving mechanisms are arranged in the same row, and the length direction of the transverse driving mechanism is perpendicular to the conveying direction of the strip steel;

[0019] Support screws are respectively arranged on both sides of the transverse driving mechanism, one end of each support screw is connected to the baffle plate on the corresponding side, and the other end is fixedly connected to the high temperature resistant plate, and sliding bearings are respectively arranged on the four support screws, and a space for the sliding bearing to slide transversely is reserved between the support screw and the high temperature resistant plate in the height direction;

[0020] A transverse driving connecting plate is connected to the bottom of each transverse driving mechanism, and the two transverse driving connecting plates are symmetrically distributed. The two transverse driving connecting plates are respectively connected to the front guide mechanism, the roller mechanism and the rear guide mechanism in the front-to-back direction; the two ends of the upper surface of the transverse driving connecting plate are respectively fixedly connected to the sliding bearings on the supporting screw at the corresponding positions, and the transverse driving connecting plate is connected to the sliding connection part of the transverse driving mechanism. Under the drive of the transverse driving mechanism, the transverse driving connecting plate moves in the transverse direction, thereby realizing the opening and closing of the traction trolley device.

[0021] The front guide mechanism includes two symmetrical high-temperature resistant front baffles and two transversely arranged servo electric cylinders. The high-temperature resistant front baffle includes a front guide long straight plate and a front guide inclined plate. The front guide inclined plate is inclined outward and connected to the front guide long straight plate to form an obtuse angle. The two high-temperature resistant baffles are respectively vertically connected to the two transverse drive connecting plates. The front guide long straight plate is fixedly connected to the front part of the lower surface of the transverse drive connecting plate.

[0022] The two symmetrical front guide inclined plates are in an "eight"-shaped structure, the distance between the front ends of the two front guide inclined plates is greater than the distance between the rear ends of the two front guide inclined plates, and the distance between the front ends of the two front guide inclined plates is consistent with the entrance of the finishing roller;

[0023] The extended end of the servo electric cylinder is driven and moved laterally through the reserved space on the front guide long straight plate to clamp the strip steel.

[0024] The rear guide mechanism includes two symmetrical high-temperature resistant rear baffles, which include a rear guide long straight plate and a rear guide inclined plate. The rear guide inclined plate is inclined outward and connected to the rear guide long straight plate to form an obtuse angle; the two high-temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plates, the rear guide long straight plate is fixedly connected to the transverse drive connecting plate, and the openings of the two rear guide inclined plates are connected to the snake vibration outlet.

[0025] The openings of the two rear guide inclined plates shall not be less than the size of the snake vibration outlet.

[0026] The roller mechanism includes two symmetrically distributed driving rollers and a servo motor for driving the driving rollers. The driving rollers are located between the front guide mechanism and the rear guide mechanism and are symmetrically placed under two transverse driving connecting plates. The servo motor is fixed on the upper surface of the transverse driving connecting plate and can pass through the rectangular opening on the high-temperature resistant flat plate. The rectangular opening provides space for the servo motor to move transversely when it moves transversely. The output end of the servo motor is connected to the driving roller. The servo motor can drive the driving roller to realize forward rotation and reverse rotation. The driving roller rotation speed matches the strip speed.

[0027] The sliding device includes a three-dimensional frame for supporting and connecting, a sliding mechanism, a bearing platform, and a protective cover; the three-dimensional frame is connected to the sliding mechanism and can slide on the slide rail; a driving motor and corresponding driving rollers are arranged inside the sliding mechanism, a front detection sensor and a rear detection sensor for detecting the presence of strip steel, a lifting component and a lifting motor of the lifting device are installed on the bearing platform, and a positioning sensor is installed on the side of the protective cover.

[0028] The two detection sensors use laser sensors with an operating temperature of -10 to 50°C. The sensor has a built-in water cooling device that can reduce the working ambient temperature to 50°C; the positioning sensor uses a high-temperature resistant photoelectric sensor with an operating temperature of -25 to 150°C.

[0029] The lifting device includes four identical lifting mechanisms, which are composed of four identical lead screws. Lifting components are respectively arranged above the lead screws. The four lifting components are connected to a lifting motor. The lower end of the lifting device is connected to the hanging platform of the traction trolley device. The four lead screws are driven up and down by the lifting motor, thereby realizing the lifting operation of the traction trolley device.

[0030] Compared with the prior art, the utility model technology has the following beneficial effects:

[0031] The outstanding substantive features of this utility model are:

[0032] 1. Improve production efficiency: Since the automatic traction trolley replaces manual traction, the utility model method can realize continuous and stable strip transmission without waiting or pausing, thereby improving the operation efficiency of the production line.

[0033] 2. Reduce labor intensity: The automatic traction method and system of the utility model can reduce the demand for physical labor of workers and reduce labor intensity.

[0034] 3. Improve safety: The automatic traction method and system of the utility model can reduce the impact of human operation on safety, reduce the probability of accidents, and improve the safety of the production line.

[0035] 4. Ensure product quality: The automatic traction method and system of the utility model can achieve more precise control and adjustment, ensuring that the strip maintains stable tension and shape during the transmission process, which is conducive to improving the quality and consistency of the product.

[0036] 5. Reduce human errors: The automatic traction method and system of the utility model can reduce errors and unstable factors in human operation and improve the stability and reliability of the production line.

[0037] 6. Cost saving: The automatic traction method and system of the utility model can reduce labor costs and resource waste, and improve the economic benefits of the production line.

[0038] The significant improvements of the utility model are:

[0039] 1. No need to consider the shape of the strip after steel is tapped, which reduces the difficulty of grabbing.

[0040] 2. The traction trolley device has a simple structure, a lower manufacturing cost and is easy to maintain compared to the robotic arm device.

[0041] 3. High temperature resistance. All equipment is made of high temperature resistant materials. The detection sensor uses a laser sensor with an operating temperature of -10 to 50°C. This sensor has a built-in water cooling device that can reduce the ambient temperature to 50°C. The positioning sensor uses a high temperature resistant photoelectric sensor with an operating temperature of -25 to 150°C. All motors use servo motors with a temperature tolerance of 100 to 200°C. The sensor is placed on the trolley carrying platform, far away from the strip steel, and the surrounding temperature is relatively low, which can ensure the normal operation of the sensor.

[0042] 6. The maximum speed of the trolley can reach 4m / s, and the acceleration time is 2s, which can ensure that the strip steel is clamped in 2s. The displacement of the trolley when clamping the strip steel is >4 meters. This space can meet the normal accumulation of the strip steel that has passed through the snake vibration, and can ensure that the work of the snake vibration is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the overall structure of an automatic traction system for coiling strip steel in a hot rolling production line according to an embodiment of the utility model.

[0044] Figure 2 This is a structural schematic diagram of a traction trolley device according to an embodiment of the utility model.

[0045] Figure 3 This is a schematic diagram of the internal structure of a traction trolley device according to an embodiment of the utility model.

[0046] Figure 4 This is a schematic diagram of the structure of a transverse driving mechanism 112 according to an embodiment of the utility model.

[0047] Figure 5 This is a schematic structural diagram of a front guide mechanism 12 according to an embodiment of the utility model.

[0048] Figure 6 This is a schematic diagram of the overall framework of an embodiment of the utility model.

[0049] Among them, 1 is a traction trolley device, 2 is a sliding device, 3 is a lifting device, Ⅰ is a strip steel, Ⅱ is a plate chain for conveying the strip steel, 11 is a hanging platform, 12 is a front guide mechanism, 13 is a rear guide mechanism, 14 is a roller mechanism, 21 is a trapezoidal three-dimensional frame, 22 is a sliding mechanism, 23 is a bearing platform, 24 is a protective cover, 231 is a rear detection sensor, 232 is a front detection sensor, 233 is a positioning sensor, 31 is a lifting device, 311 is a lifting component, and 312 is a lifting motor;

[0050] 111 is a high temperature resistant flat plate, 1111 is a rectangular opening, 131 is a rear guide straight plate, 132 is a rear guide inclined plate; 112 is a transverse drive mechanism, 113 is a transverse drive connecting plate, 114 is a baffle, 115 is a support screw, 141 is a drive roller, 1411 is a servo motor, 1151 is a sliding bearing; 1121 is a sliding platform, 1122 is a spiral screw, 1123 is a sliding shaft, 1124 is a transverse The motor, 1125 is a sliding track, 1126 is a sliding connection component; 121 is a front guide long straight plate, 122 is a front guide inclined plate, 1211 is a servo electric cylinder, 1212 is a hole space; 21 is a trapezoidal three-dimensional frame, 211 is an inclined column, 212 is a crossbeam, 213 is a support column, 214 is a support rod, 22 is a sliding mechanism, 221 is a driving roller, 311 is a lifting component, 312 is a lifting motor, and Ⅱ is a plate chain. DETAILED DESCRIPTION

[0051] The utility model is described in detail below in conjunction with the embodiments and the accompanying drawings. The embodiments are only further explanations of the technical solution of the utility model and do not limit the protection scope of the utility model.

[0052] The utility model provides an automatic traction system for coiling strip steel in a hot rolling production line. It can replace manual traction and realize unmanned automatic operation of traction of strip steel in a hot rolling production line. On the one hand, it can reduce the labor intensity of workers and effectively avoid production accidents and losses. On the other hand, automatic traction can continuously and stably traction strip steel, avoid the problem of needing to pause and rest during manual traction, and greatly improve production efficiency. The advantage of the utility model is that the traction trolley is in an open manner and waits for steel to be discharged at the entrance of the snake vibration area (the traction trolley is initially stationary and the speed is 0). After the snake vibration, the strip steel rushes out of the channel opened by the traction trolley, and the speed of the strip steel is relatively fast at this time. Before the strip steel rushes out of the traction trolley, the detection sensor 231 on the traction trolley has detected the strip steel. At this time, the trolley is started to accelerate forward movement. At the same time, the transverse drive mechanism and the roller mechanism also start to work. On the one hand, the transverse drive connecting plate is driven to drive the front and rear guide mechanisms and rollers in the open state to close to the middle. On the other hand, the roller rotates forward to straighten the strip steel forward until the strip steel is closed. After the strip is caught, the trolley continues to chase the strip head forward, while the rollers rotate in the opposite direction to pull the strip head back. The servo electric cylinder of the front guide mechanism clamps the strip head and pulls it at a reasonable position. This process does not need to consider the state of the strip head, which improves the accuracy of grabbing the strip head.

[0053] Example 1 Reference Figure 1 , Figure 2 Description of Implementation Methods

[0054] The automatic traction system for coiling strip steel in the hot rolling production line of this embodiment 1 includes a traction trolley device 1, a sliding device 2, a lifting device 3 and a control unit. The sliding device 2 is used to be installed on both sides of the plate chain II of the conveyor belt steel I, and the control unit is used to control various parts of the system to complete corresponding actions.

[0055] The traction trolley device 1 includes four parts: a suspension platform 11, a front guide mechanism 12, a rear guide mechanism 13 and a roller mechanism 14;

[0056] The suspension platform is used to provide installation space;

[0057] The roller mechanism 14 is installed on the suspension platform 11 and is used to drive the strip to move forward and backward;

[0058] The front guide mechanism 12 and the rear guide mechanism 13 are respectively installed at the front and rear of the suspension platform, and the two are opened to provide a passage for the strip steel to pass through;

[0059] The grabbing part of the front guide mechanism 12 is used to capture the strip head, and the front end opening is directly facing the finishing roller entrance, so that the strip can be easily introduced into the finishing roller;

[0060] The rear end of the rear guide mechanism extends to the snake vibration area and docks with the snake vibration outlet, so that the strip steel can directly rush into the channel opened by the trolley from the snake vibration area;

[0061] When the strip is fed into the finishing roller, the traction trolley is in a retracted state, and the opening of the symmetrical front guide inclined plate faces the entrance of the finishing roller, making it easy for the strip to be guided into the finishing roller.

[0062] The sliding device 2 includes a trapezoidal three-dimensional frame 21, a sliding mechanism 22, a bearing platform 23, and a protective cover 24.

[0063] The supporting platform is provided with a rear detection sensor 231 and a front detection sensor 232 for detecting the presence of strip steel, as well as a lifting component 311 of a lifting mechanism 31, which is a trapezoidal three-dimensional structure as a whole. A driving roller is arranged in the sliding device 2 to drive the traction trolley to make a reciprocating motion.

[0064] The lifting device 3 includes four identical lifting mechanisms 31 , the upper ends of the lifting mechanisms 31 are respectively connected to four lifting components 311 , and the lower end of the lifting device 3 is connected to the suspension platform 11 of the traction trolley device 1 to achieve the lifting operation of the traction trolley device.

[0065] The grabbing part in the utility model can be in the form of a servo electric cylinder, or in the form of a small manipulator, etc., and the grabbing end thereof has a plane for clamping the strip steel.

[0066] Example 2: Reference Figure 2 , Figure 3 , Figure 4 Description of Implementation Methods

[0067] This embodiment is a further example of the suspension platform 11 in the traction trolley device 1 described in Example 1.

[0068] The suspension platform 11 includes a high temperature resistant flat plate 111, two symmetrically distributed transverse drive mechanisms 112, two symmetrically distributed transverse drive connecting plates 113, two symmetrically distributed baffles 114, and four supporting screws 115;

[0069] The surface of the high temperature resistant plate 111 is provided with rectangular openings 1111 perpendicular to the conveying direction of the strip steel, and the rectangular openings are in the form of through holes. Baffles 114 are vertically fixed on both sides of the lower surface of the high temperature resistant plate 111;

[0070] The upper surface of the high temperature resistant plate is connected to the lifting device 3; the lower surface of the high temperature resistant plate and the area between the two baffles are fixedly connected to two transverse driving mechanisms 112, the transverse driving mechanisms are ball screw slides, the two transverse driving mechanisms 112 are arranged in the same row, and the length direction of the transverse driving mechanism is perpendicular to the conveying direction of the strip steel;

[0071] Support screws 115 are respectively arranged on both sides of the transverse driving mechanism 112, and there are four support screws in total, one end of each support screw is connected to the baffle 114 on the corresponding side, and the other end is fixedly connected to the high temperature resistant plate 111 in a reasonable manner, such as being fixed to the lower surface of the high temperature resistant plate through a connecting piece. The support screw 115 is the same length as the transverse driving mechanism 112.

[0072] The four support screws 115 are respectively provided with sliding bearings 1151 , and a certain space is left between the support screws 115 and the high temperature resistant plate 111 in the height direction, and the sliding bearings 1151 can slide laterally along the support screws in this space.

[0073] A transverse drive connecting plate 113 is connected to the bottom of each transverse drive mechanism 112, and the two transverse drive connecting plates 113 are symmetrically distributed. The two transverse drive connecting plates 113 are respectively connected to the front guide mechanism 12, the roller mechanism 14 and the rear guide mechanism 13 in the front-to-back direction. The two ends of the upper surface of the symmetrically distributed transverse drive connecting plates 113 are respectively fixedly connected to the sliding bearings 1121 on the corresponding positions of the support screw 115, and the sliding bearing plays a guiding role. The transverse drive connecting plate is connected to the sliding connection component 1126 of the transverse drive mechanism. Under the drive of the transverse drive mechanism, the transverse drive connecting plate moves laterally along the sliding platform and the support screw, thereby realizing the opening and closing of the trolley.

[0074] The transverse driving connecting plate 113 is driven by the motor of the transverse driving mechanism 112, which drives the front and rear guide mechanisms and the roller mechanism under the transverse driving connecting plate 113 to synchronously reciprocate laterally. The two symmetrical transverse driving connecting plates move toward the middle to realize the folding of the trolley, and the two symmetrical transverse driving connecting plates move to both sides to realize the opening of the trolley.

[0075] Each lateral drive mechanism 112 (see Figure 4 ) includes a sliding platform 1121, the sliding platform 1121 is a U-shaped trough, a screw 1122 is provided in the U-shaped trough, a sliding shaft 1123 is installed on the screw 1122, a transverse motor 1124 is provided on one side of the screw 1122, the transverse motor 1124 is embedded in the U-shaped trough, and the other side of the servo motor is fixedly connected to the baffle 114. Sliding rails 1125 are provided on the sliding platforms 1121 on both sides of the U-shaped trough. Sliding connection components 1126 are installed on the sliding rails, and the sliding connection components 1126 are fixedly connected to the sliding shaft 1123 and the transverse driving connection plate 113.

[0076] In this embodiment, the core component of the transverse drive mechanism is a ball screw slide, and other slides that can provide transverse linear movement can also be used.

[0077] In the utility model, the transverse direction is defined as a direction perpendicular to the strip transmission, the longitudinal direction is the strip transmission direction, the side where the oscillating roller outlet is located is the rear, and the direction where the finishing roller is located is the front.

[0078] Example 3: Reference Figure 5 Description of Implementation Methods

[0079] This embodiment is a further explanation of the front guide mechanism 12 described in the traction trolley device of the automatic traction system for coiling strip in the hot rolling production line described in Example 2.

[0080] The front guide mechanism 12 includes two symmetrical high temperature resistant front baffles and two transversely arranged servo electric cylinders 1211. The high temperature resistant front baffles include a front guide long straight plate 121 and a front guide inclined plate 122. The front guide inclined plate 122 is inclined outward and connected to the front guide long straight plate 121 at a certain obtuse angle. The two high temperature resistant front baffles are respectively perpendicular to the transverse drive connecting plate 113. The front guide long straight plate 121 is fixedly connected to the front part of the lower surface of the transverse drive connecting plate 113. The parts of the two high temperature resistant front baffles extending out of the transverse drive connecting plate are the front guide inclined plates 122, which facilitate the strip to be introduced into the finishing roller.

[0081] The two symmetrical front guide inclined plates 122 are in an “eight”-shaped structure, and the distance between the front ends of the two front guide inclined plates 122 is greater than the distance between the rear ends of the two front guide inclined plates 122 .

[0082] The front guide long straight plate 121 is provided with a hole space 1212 through which the servo electric cylinder 1211 passes. The upper end of the servo electric cylinder 1211 is fixedly connected to the high temperature resistant flat plate 111, and the extended end of the servo electric cylinder 1211 is driven and moved laterally through the hole space left on the front guide long straight plate 121. The extended end of the servo electric cylinder 1211 is provided with a clamping plate, which passes through the hole space 1212 to clamp the strip steel, so as to realize the operation of tightening and releasing the strip steel.

[0083] Specifically, when the traction trolley device is recovering the strip that has rushed out of the traction trolley device, when the front detection sensor 232 detects that the strip head has entered the front guide mechanism, the symmetrical servo electric cylinder moves to the middle to clamp the strip head, thereby capturing the strip head. The current position of the traction trolley device is sensed by the positioning sensor 233. When it is detected that the captured strip head is pulled in front of the finishing roller, the openings of the two front guide inclined plates face the entrance of the finishing roller, and the strip head is sent into the finishing roller.

[0084] The positioning sensor uses a high temperature resistant photoelectric sensor, and photoelectric receiving devices are installed at the finishing roller and the snake vibration exit position; when returning to the snake vibration exit position to prepare for pulling the next strip, the positioning sensor and the photoelectric receiving device are electrically connected to the control unit.

[0085] Example 4: Reference Figure 2 Description of Implementation Methods

[0086] This embodiment is a further description of the rear guide mechanism 13 in the traction trolley device described in Example 2.

[0087] The rear guide mechanism 13 includes two symmetrical high temperature resistant rear baffles, which include a rear guide long straight plate 131 and a rear guide inclined plate 132. The rear guide inclined plate 132 is inclined outward and connected to the rear guide long straight plate 131 at a certain obtuse angle. The two high temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plate 113, and the rear guide long straight plate 131 is fixedly connected to the transverse drive connecting plate 113. The openings of the two rear guide inclined plates 132 are connected to the snake vibration outlet to facilitate the smooth entry of the strip into the traction trolley device. The openings of the two rear guide inclined plates 132 are not less than the size of the snake vibration outlet;

[0088] Specifically, the traction trolley device is in an open state waiting for steel discharge at the exit of the snake vibration area, and the two symmetrical rear inclined plates of the rear guide mechanism extend to the snake vibration area and dock with the snake vibration exit, so that the strip comes out of the snake vibration area and directly rushes into the channel opened by the trolley.

[0089] Example 5: Reference Figure 3 Description of Implementation Methods

[0090] This embodiment is a further description of the roller mechanism 14 in the traction trolley device described in Example 2.

[0091] The roller mechanism 14 includes two symmetrically distributed driving rollers 141 and a servo motor 1411 for driving the driving rollers. The driving rollers 141 are located between the front guide mechanism 12 and the rear guide mechanism 13 and are symmetrically placed under two transverse driving connecting plates 113 .

[0092] The servo motor 1411 is placed above the driving roller. The servo motor 1411 is fixed on the upper surface of the transverse driving connecting plate 113 and can pass through the rectangular opening 1111 on the high temperature resistant flat plate 111. The rectangular opening 1111 provides space for the servo motor to move transversely when moving transversely. The output end of the servo motor 1411 is connected to the driving roller. The servo motor can drive the driving roller to achieve forward and reverse rotation. The speed of the driving roller can match the speed of the strip steel, and the speed can reach 15m / s+, which is used to drive the strip steel to move forward and backward.

[0093] Specifically, the traction trolley device is waiting for steel to be discharged at the snake vibration outlet. When the detection sensor 231 on the trolley detects that the strip steel has come out, the trolley accelerates forward, and the transverse drive connecting plate 113 described in Example 2 is retracted to the middle. At the same time, the servo motor drives the roller to start rotating forward to realize the strip steel straightening. When the strip steel is closed, the servo motor drives the roller to start rotating in the opposite direction to pull back the strip steel that has rushed out of the trolley. When the servo electric cylinder in the front guide mechanism clamps the strip steel head, the drive roller stops rotating until the strip steel is fed into the finishing roller, and the drive roller rotates forward to realize the introduction of the strip steel into the finishing roller.

[0094] Example 6: Reference Figure 1 , Figure 6 Description of Implementation Methods

[0095] This embodiment further illustrates the sliding device 2 described in the automated method for manual strip pulling of a hot rolling production line described in Example 1.

[0096] Slide 2 (participate in Figure 6 ) includes a trapezoidal stereoscopic frame 21, a sliding mechanism 22, a bearing platform 23, and a protective cover 24. The trapezoidal stereoscopic frame 21 includes four inclined columns 211, four crossbeams 212, and internal support columns 213 and support rods 214. The trapezoidal stereoscopic frame 21 is fixedly connected to the sliding mechanism 22 and placed on the slide rails, and slide rails are added on both sides of the plate chain II along the conveying direction. The inclined columns 211 play a supporting and stabilizing role. The bearing platform 23 is located above the frame.

[0097] The sliding mechanism 22 described in this embodiment is a rolling guide rail. A driving roller 221 is installed inside the sliding mechanism, each driving roller is driven by a driving motor. In this embodiment, four driving rollers are provided, which can drive the traction trolley to perform reciprocating linear motion along the conveyor belt direction and can provide a higher movement speed.

[0098] The protective cover 24 comprises a housing side plate, a guard plate and a housing, and is used to protect the traction trolley device. A positioning sensor 232 is arranged on the housing side plate.

[0099] The carrying platform 23 is formed into a rectangle with the upper end supported by four oblique sides, and the rectangle is covered with a high-temperature resistant steel plate of the same size. The lifting component 311 and the lifting motor 312 in the lifting device are placed on the carrying platform. The carrying platform 23 is provided with a rear detection sensor 231 and a front detection sensor 232 for detecting the presence of strip steel.

[0100] In this embodiment, the sliding mechanism is a rolling guide rail, and may also be a sliding guide rail, or other sliding mechanisms that can provide overall movement of the trolley.

[0101] In this embodiment, the trapezoidal three-dimensional structure is fixed together by a suitable connection method to form a frame of the sliding device to achieve the reciprocating motion of the trolley.

[0102] Example 7, reference Figure 6 Description of Implementation Methods

[0103] This embodiment further illustrates the lifting device described in the automatic traction method system for coiling strip in the hot rolling production line described in Example 1.

[0104] The lifting device 3 of this embodiment includes four identical lifting mechanisms 31, the upper ends of the lifting mechanisms 31 are respectively connected to four lifting components 311, and the lower end of the lifting device is connected to the suspension platform 11 of the traction trolley device 1 to achieve the lifting operation of the traction trolley.

[0105] Specifically: after the finishing roller captures the strip, the traction trolley device is lifted by the lifting device, raised to a higher height, separated from the strip, and moves back along the slide rail.

[0106] All the motors, sensors and photoelectric receiving devices mentioned above in the present invention are electrically connected to the control unit, and the control unit controls the corresponding components to complete the work.

[0107] The grabbing part in the front guide device of the small and medium-sized vehicle device of the utility model adopts a servo electric cylinder, and other grabbing devices such as a cylinder, a mechanical grab and the like can also be adopted.

[0108] The lifting device in the utility model can also adopt a scissor lift mechanism, etc. The positioning sensor in the utility model can adopt a photoelectric sensor, and can also adopt a GPS positioning sensor. The GPS positioning sensor is provided with a high temperature resistant protective shell. The GPS positioning sensor is connected to the control unit. The GPS positioning sensor is installed on the traction trolley, near the finishing roller entrance and the snake vibration exit to sense the relative positions of the three.

[0109] The utility model uses a traction trolley, and a strip steel passing channel is arranged inside the traction trolley. Since the instantaneous speed of the strip steel rushing out of the snake vibration area is not less than 15m / s, the trolley cannot immediately catch the strip steel head, and the strip steel is allowed to rush out of the traction trolley, and then the strip steel head is chased back at full speed; the traction trolley can be opened and closed in the process of moving along the plate chain, and the strip steel is still in an upright state when it just rushes out of the snake vibration area. The traction trolley is in an open state and waits for steel discharge at the exit of the snake vibration area, and the strip steel rushes out of the channel opened by the traction trolley. At the same time, the traction trolley accelerates and chases back the rushed strip steel head, and the channel of the traction trolley is gradually closed, and the strip steel is closed; after the strip steel is closed, the traction trolley continues to chase the strip steel head forward on the one hand, and on the other hand, pulls the strip steel head back backward, clamps the strip steel head near the front end of the traction trolley and pulls it to the entrance of the finishing roller.

[0110] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0111] Anything not described in the present invention is applicable to the prior art.

Claims

1. An automatic traction system for coiling steel strip in a hot rolling production line, characterized in that: The system comprises: A slide rail arranged on the plate chain of a hot rolling production line along the conveying direction of the strip; A sliding device, used for driving the traction trolley device to move along the slide rail; A lifting device, used to lift or lower the traction trolley device; A control unit, used to control the working states of the traction trolley device, the lifting device and the sliding device; The traction trolley device comprises a suspension platform, a front guide mechanism, a rear guide mechanism and a roller mechanism. The suspension platform is used to provide an installation space. The roller mechanism is installed on the suspension platform to drive the strip to move forward and backward. The front guide mechanism and the rear guide mechanism are respectively installed at the front and rear of the suspension platform, and the two are opened to provide a passage for the strip to pass through. The front end opening of the front guide mechanism faces the entrance of the finishing roller; The rear end of the rear guide mechanism extends to the snake vibration area and docks with the snake vibration outlet; The front guide mechanism, the rear guide mechanism and the roller mechanism can be synchronously opened or retracted in a direction perpendicular to the conveying direction of the plate chain as a whole.

2. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 1 is characterized in that: The suspension platform includes a high temperature resistant flat plate, two symmetrically distributed transverse drive mechanisms, two symmetrically distributed transverse drive connecting plates, two symmetrically distributed baffles, and four supporting screws; The surface of the high temperature resistant plate is provided with rectangular openings perpendicular to the conveying direction of the strip steel, the rectangular openings are in the form of through holes, and baffles are vertically fixed on both sides of the lower surface of the high temperature resistant plate; The upper surface of the high temperature resistant plate is connected to the lifting device; the lower surface of the high temperature resistant plate and the area between the two baffles are fixedly connected to two transverse driving mechanisms, the two transverse driving mechanisms are arranged in the same row, and the length direction of the transverse driving mechanism is perpendicular to the conveying direction of the strip steel; Support screws are respectively arranged on both sides of the transverse driving mechanism, one end of each support screw is connected to the baffle plate on the corresponding side, and the other end is fixedly connected to the high temperature resistant plate, and sliding bearings are respectively arranged on the four support screws, and a space for the sliding bearing to slide transversely is reserved between the support screw and the high temperature resistant plate in the height direction; A transverse driving connecting plate is connected to the bottom of each transverse driving mechanism, and the two transverse driving connecting plates are symmetrically distributed. The two transverse driving connecting plates are respectively connected to the front guide mechanism, the roller mechanism and the rear guide mechanism in the front-to-back direction; the two ends of the upper surface of the transverse driving connecting plate are respectively fixedly connected to the sliding bearings on the supporting screw at the corresponding positions, and the transverse driving connecting plate is connected to the sliding connection part of the transverse driving mechanism. Under the drive of the transverse driving mechanism, the transverse driving connecting plate moves in the transverse direction, thereby realizing the opening and closing of the traction trolley device.

3. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 2 is characterized in that: The front guide mechanism includes two symmetrical high-temperature resistant front baffles and two transversely arranged servo electric cylinders. The high-temperature resistant front baffle includes a front guide long straight plate and a front guide inclined plate. The front guide inclined plate is inclined outward and connected to the front guide long straight plate to form an obtuse angle. The two high-temperature resistant baffles are respectively vertically connected to the two transverse drive connecting plates. The front guide long straight plate is fixedly connected to the front part of the lower surface of the transverse drive connecting plate. The two symmetrical front guide inclined plates are in an "eight" shape, the distance between the front ends of the two front guide inclined plates is greater than the distance between the rear ends of the two front guide inclined plates, and the distance between the front ends of the two front guide inclined plates is consistent with the entrance of the finishing roller; The extended end of the servo electric cylinder is driven and moved laterally through the reserved space on the front guide long straight plate to clamp the strip steel.

4. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 2 is characterized in that: The rear guide mechanism includes two symmetrical high-temperature resistant rear baffles, which include a rear guide long straight plate and a rear guide inclined plate. The rear guide inclined plate is inclined outward and connected to the rear guide long straight plate to form an obtuse angle; the two high-temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plates, the rear guide long straight plate is fixedly connected to the transverse drive connecting plate, and the openings of the two rear guide inclined plates are connected to the snake vibration outlet.

5. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 4 is characterized in that: The openings of the two rear guide inclined plates shall not be less than the size of the snake vibration outlet.

6. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 2, characterized in that: The roller mechanism includes two symmetrically distributed driving rollers and a servo motor for driving the driving rollers. The driving rollers are located between the front guide mechanism and the rear guide mechanism and are symmetrically placed under two transverse driving connecting plates. The servo motor is fixed on the upper surface of the transverse driving connecting plate and can pass through the rectangular opening on the high-temperature resistant flat plate. The rectangular opening provides space for the servo motor to move transversely when it moves transversely. The output end of the servo motor is connected to the driving roller. The servo motor can drive the driving roller to realize forward rotation and reverse rotation. The driving roller rotation speed matches the strip speed.

7. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 1, characterized in that: The sliding device includes a three-dimensional frame for supporting and connecting, a sliding mechanism, a bearing platform, and a protective cover; the three-dimensional frame is connected to the sliding mechanism and can slide on the slide rail; a driving motor and corresponding driving rollers are arranged inside the sliding mechanism, a front detection sensor and a rear detection sensor for detecting the presence of strip steel, a lifting component and a lifting motor of the lifting device are installed on the bearing platform, and a positioning sensor is installed on the side of the protective cover.

8. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 7, characterized in that: The two detection sensors use laser sensors with an operating temperature of -10 to 50°C; the positioning sensor uses a high-temperature resistant photoelectric sensor with an operating temperature of -25 to 150°C.

9. The automatic traction system for coiling steel strips in a hot rolling production line according to claim 1, characterized in that: The lifting device includes four identical lifting mechanisms, which are composed of four identical lead screws. Lifting components are respectively arranged above the lead screws. The four lifting components are connected to a lifting motor. The lower end of the lifting device is connected to the hanging platform of the traction trolley device. The four lead screws are driven up and down by the lifting motor, thereby realizing the lifting operation of the traction trolley device.

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