An accident shearing post-fault processing system, method and strip steel production line

Abstract

The present invention relates to a post-accident shear fault handling system, method and strip production line, belonging to the technical field of hot-rolled strip continuous casting and rolling. It includes a waste buffer device, a turning device, a lifting device and a clamping device that are sequentially arranged downstream of the accident shear along the strip transmission direction, and a fixed heat preservation cover arranged above the waste buffer device; when a fault occurs downstream of the accident shear, the accident shear cuts the strip, and the turning device and the clamping device cooperate with the lifting device to lift the cut strip to tow it away from the fixed heat preservation cover. The accident shear cuts the upstream strip that continues to be produced into pieces. At the same time, the lifting frame of the waste buffer device descends to collect the cut strip and automatically dumps the stored waste into the waste bin, which not only simplifies the structure of post-accident shear fault handling, but also seals and thermally insulates the passing strip by using a fixed heat preservation cover, which does not need to be opened whether in normal production or accident handling, effectively avoiding heat loss and being beneficial to improving the strip quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of hot-rolled strip continuous casting and rolling, and relates to a fault handling system and method after an emergency shear and a strip production line. Background Art

[0002] Compared with the conventional hot-rolled strip production technology, the hot-rolled strip continuous casting and rolling technology has the benefits of energy conservation and emission reduction. Especially in the past decade, the thin strip endless casting and rolling technology represented by ESP has developed rapidly at home and abroad and has become an important choice path for the greening and intelligentization of hot rolling. The emergency shear in the continuous casting and rolling process plays the role of shearing and continuously pushing out waste when an accident occurs in the downstream process, so as to ensure that the upstream equipment can continue to produce without being affected by downstream accidents, which is beneficial to reducing the production recovery time and the reheating cost of molten steel.

[0003] In the prior art, the fault handling system after the emergency shear mostly uses a swing loop + lifting roller table + waste pushing device to complete, but there are the following defects: (1) The waste handling system uses a lifting roller table plus a horizontal push rod and a storage platform to achieve, and the equipment used is more, which affects the efficiency; (2) The reliability is low and it is prone to failure. When an accident occurs in the downstream process of the emergency shear, in order to ensure no steel stacking, it is required to quickly lift the strip tail. When production needs to be resumed, it is necessary to quickly reset and provide support for the strip to avoid head jamming of the strip, so it is very easy to fail; (3) The structure is huge and complex, the investment cost is high, the efficiency is low, and the control rhythm requirement is high. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a fault handling system and method after an emergency shear and a strip production line to simplify the structure, improve the efficiency and improve the reliability of the system.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An accident shearing post-fault processing system includes a waste material buffer device, a turning device, a lifting device, and a clamping device that are sequentially arranged downstream of the accident shear along the strip steel transmission direction, and a fixed heat preservation cover arranged above the waste material buffer device; the waste material buffer device includes a lifting frame with a plurality of carrying rollers arranged on the upper side; the lifting frame can automatically lift horizontally and can automatically tilt to one side; a waste material box is provided on one side of the lifting frame to collect the waste material dumped from the lifting frame; the turning device includes a turning support and an upper roller arranged on the turning support and located above the strip steel; the lifting device includes a lifting support and a lifting roller arranged on the lifting support and located below the strip steel, and the lifting roller is connected with a lifting driving device to lift the lifting roller; the clamping device includes a clamping support and an upper pinch roller and a lower pinch roller arranged up and down on the clamping support, a conveying channel for the strip steel is formed between the upper pinch roller and the lower pinch roller, and the distance between the upper pinch roller and the lower pinch roller can be automatically adjusted to realize the automatic clamping of the strip steel.

[0007] Optionally, two groups of independently controlled lifting driving devices are provided on the lower side of the lifting frame, and the two groups of lifting driving devices are installed on a fixed frame on the ground foundation and are respectively located on both sides of the lifting frame.

[0008] Optionally, each group of lifting driving devices includes two linear hydraulic cylinders; the installation end of the lifting driving device is hinged to the fixed frame, and the output end is hinged to the lifting frame; guide wheels are provided at both ends of the lifting frame corresponding to the hinge center line of a group of lifting driving devices and the lifting frame, and guide wheel guide holes matching the guide wheels are opened at the positions of the fixed frame corresponding to the guide wheels, so that the guide wheels move vertically under the action of the corresponding lifting driving device.

[0009] Optionally, all the carrying rollers are driving rollers, or some are driving rollers and some are idler rollers.

[0010] Optionally, there are 6 carrying rollers, which are evenly distributed on the upper side of the lifting frame.

[0011] Optionally, a guide plate with the top flush with or slightly lower than the carrying roller is provided on the side of the carrying roller close to the waste material box, the guide plate is installed on the lifting frame, and a downwardly inclined guiding surface is provided on the upper side of the end far from the carrying roller.

[0012] Optionally, the turning device further includes a lower roller arranged on the turning support and arranged up and down with the upper roller, and a conveying channel for the strip steel is formed between the upper roller and the lower roller.

[0013] Optionally, the upper roller is an idler roller or a driving roller, and the lower roller is a driving roller to provide support and forward power for the strip steel during normal production.

[0014] Optionally, the distance between the upper roller and the lower roller is adjustable.

[0015] Optionally, the lifting drive device includes two linear hydraulic cylinders symmetrically installed on both sides of the lifting bracket respectively, and the output end of the lifting drive device is connected to the lifting roller.

[0016] Optionally, the lifting bracket is provided with lifting roller guide holes corresponding to both ends of the lifting roller and matching the lifting roller, so that the lifting roller moves vertically under the action of the lifting drive device.

[0017] Optionally, the linear hydraulic cylinder adopts a middle hinge structure type.

[0018] Optionally, the upper pinch roll is an idler roll, and the lower pinch roll is a driving roll to provide support and forward power for the strip steel during normal production.

[0019] Optionally, the height position of the upper pinch roll is adjustable, and its height position is adjusted by the upper pinch roll lifting drive device connected thereto.

[0020] Optionally, the upper pinch roll lifting drive device is a linear hydraulic cylinder.

[0021] Optionally, both the steering bracket and the clamping bracket are installed on the lifting bracket to share the installation base with the lifting bracket.

[0022] A method for handling faults after an accident shear. The heat preservation cover downstream of the accident shear adopts a fixed heat preservation cover, and a steering device, a lifting device and a clamping device are sequentially arranged on the outlet side of the fixed heat preservation cover; the strip steel cut by the accident shear is dragged out of the fixed heat preservation cover by the lifting device to leave space for subsequent waste collection, and at the same time, it is steered by the upstream steering device to reduce the drag resistance, and is clamped by the downstream clamping device to prevent the downstream strip steel from being dragged out during the process of the lifting device lifting the strip steel; a waste buffer device is arranged corresponding to the position of the fixed heat preservation cover, and the waste buffer device adopts a lifting frame that can automatically lift horizontally and can automatically tilt to one side; a plurality of carrying rollers are arranged on the upper side of the lifting frame, which are used to provide support and forward power for the strip steel during normal production, and descend during fault handling to collect waste, and the waste is dumped into the waste box by tilting to one side.

[0023] Optionally, it specifically includes the following steps:

[0024] S1: When an accident occurs in the downstream process of the accident shear and shutdown is required, the strip steel continuously produced upstream is cut off by the accident shear;

[0025] S2: The clamping device clamps the cut strip steel to prevent the downstream strip steel from being dragged out during the process of the lifting device lifting the strip steel;

[0026] S3: The lifting device lifts the cut strip steel to drag it away from the fixed heat preservation cover to leave space for waste collection;

[0027] S4: The accident shear cuts the continuously advancing upstream strip steel into pieces so that the upstream equipment can continuously produce without stopping, and the lifting frame of the waste material buffer device descends to collect the cut strip steel;

[0028] S5: Cut off the strip steel pulled out from the fixed heat insulation cover, and reset the lifting device and the clamping device;

[0029] S6: After the equipment failure is processed, the lifting frame of the waste material buffer device tilts towards the waste box to dump the waste material into the waste box;

[0030] S7: The lifting frame of the waste material buffer device resets to make the idler rolls horizontal to provide support for the strip steel.

[0031] Optionally, the clamping device clamps the strip steel through the upper pinch roll and the lower pinch roll; during normal production, the lower pinch roll provides support and forward power for the strip steel.

[0032] A strip steel production line includes a fault handling system after the accident shear, and the fault handling system after the accident shear adopts the above-mentioned fault handling system after the accident shear.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1. When a fault occurs downstream of the accident shear, the accident shear cuts off the strip steel, and the steering device and the clamping device cooperate with the lifting device to lift the cut strip steel to drag it away from the fixed heat insulation cover. The accident shear cuts the continuously producing upstream strip steel into pieces. At the same time, the lifting frame of the waste material buffer device descends to collect the cut strip steel, and automatically dumps the stored waste material into the waste box, simplifying the structure and control process of the fault handling after the accident shear.

[0035] 2. The fixed heat insulation cover is used to seal and heat-insulate the passing strip steel. Whether in normal production or accident handling, it does not need to be opened, which not only effectively avoids heat loss, reduces energy consumption, but also helps to improve the quality of the strip steel.

[0036] 3. While meeting the function of fault handling after the accident shear, it can simplify the structure, reduce the requirements for the control rhythm, improve the efficiency, and improve the reliability of the system.

[0037] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. Brief Description of the Drawings

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in preferred detail below in conjunction with the drawings, where:

[0039] Figure 1 This is a schematic diagram of the post-accident shear fault handling system of the present invention in a normal production state;

[0040] Figure 2 This is a schematic diagram of the structure of the lifting device;

[0041] Figure 3 This is a schematic diagram of the structure of the steering device;

[0042] Figure 4 This is a schematic diagram of the structure of the clamping device;

[0043] Figure 5 This is a schematic diagram of the structure of the waste material buffer device Figure 1 ;

[0044] Figure 6 This is a schematic diagram of the structure of the waste material buffer device Figure 2 ;

[0045] Figure 7 This is a schematic diagram of the post-accident shear fault handling system of the present invention in a fault handling state.

[0046] Reference numerals: accident shear 1, fixed heat preservation cover 2, waste material buffer device 3, steering device 4, lifting device 5, clamping device 6, strip steel 7, supporting roller 31, guide wheel 32, lifting hydraulic cylinder 33, lifting frame 34, fixed frame 35, guide plate 36, waste material box 37, upper roller 41, lower roller 42, steering support 43, lifting hydraulic cylinder 51, connecting rod 52, fixed frame 53, lifting roller 54, connecting frame 55, clamping support 61, lower pinch roll 62, upper pinch roll 63, pinch roll hydraulic cylinder 64. Detailed implementation manners

[0047] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0048] Among them, the drawings are only used for illustrative purposes, showing only schematic diagrams, not physical diagrams, and cannot be understood as a limitation to the present invention; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0049] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0050] Please refer to Figures 1 to 7 , an accident shear post-fault processing system, including a waste material buffer device 3, a turning device 4, a lifting device 5, and a clamping device 6 that are sequentially arranged downstream of the accident shear 1 along the transmission direction of the strip steel 7, and a fixed heat preservation cover 2 arranged above the waste material buffer device 3; the waste material buffer device 3 includes a lifting frame 34 with a plurality of idler rollers 31 arranged on the upper side; the lifting frame 34 can automatically lift horizontally and can automatically tilt to one side; a waste material box 37 is provided on one side of the lifting frame 34 to collect the waste material dumped from the lifting frame 34; the turning device 4 includes a turning bracket 43 and an upper roller 41 arranged on the turning bracket 43 and located above the strip steel 7; the lifting device 5 includes a lifting bracket and a lifting roller 54 arranged on the lifting bracket and located on the lower side of the strip steel 7, and the lifting roller 54 is connected with a lifting drive device to lift the lifting roller 54; the clamping device 6 includes a clamping bracket 61 and an upper pinch roller 63 and a lower pinch roller 62 arranged up and down on the clamping bracket 61, a conveying channel for the strip steel 7 is formed between the upper pinch roller 63 and the lower pinch roller 62, and the distance between the upper pinch roller 63 and the lower pinch roller 62 can be automatically adjusted to realize the automatic clamping of the strip steel 7.

[0051] When a fault occurs downstream of the accident shear 1, the accident shear 1 cuts off the strip steel 7, and the turning device 4 and the clamping device 6 are used to cooperate with the lifting device 5 to lift the strip steel 7 cut by the accident shear 1 to tow it away from the fixed heat preservation cover 2. The accident shear 1 cuts the upstream strip steel 7 that continues to be produced into pieces. At the same time, the lifting frame 34 of the waste material buffer device 3 descends to collect the strip steel 7 cut into pieces and automatically dumps the stored waste material into the waste material box 37. The present invention not only simplifies the structure and control process of post-accident shear fault processing, but also seals and insulates the passing strip steel 7 by using the fixed heat preservation cover 2, which does not need to be opened whether in normal production or accident handling, effectively avoiding heat loss and being beneficial to improving the quality of the strip steel.

[0052] The structure for the lifting frame 34 to achieve automatic horizontal lifting and the function of automatically tilting to one side can be as follows: There are two sets of independently controlled lifting drive devices on the lower side of the lifting frame 34. The two sets of lifting drive devices are installed on the fixed frame 35 on the ground foundation and are respectively located on both sides of the lifting frame 34. Through the synchronous lifting of the two sets of lifting drive devices, the horizontal lifting of the lifting frame 34 can be achieved. By lifting one set of lifting drive devices and keeping the other set stationary, the tilting of the lifting frame 34 can be achieved.

[0053] The lifting drive devices are preferably hydraulic drives. Each set of lifting drive devices includes two linear hydraulic cylinders. The installation end of the lifting drive device is hinged to the fixed frame 35, and the output end is hinged to the lifting frame 34. Guide wheels 32 are provided at both ends of the lifting frame 34 corresponding to the position of the hinge center line between one set of lifting drive devices and the lifting frame 34. Guide wheel guide holes matching the guide wheels 32 are opened in the fixed frame 35 corresponding to the position of the guide wheels 32, so that the guide wheels 32 move vertically under the action of the corresponding lifting drive devices.

[0054] The structure for the lifting frame 34 to achieve automatic horizontal lifting and the function of automatically tilting to one side can also be as follows: The horizontal lifting function is achieved by adopting the method of centralized motor drive for the lift. The tilting function is achieved by taking the horizontal lifting system and the lifting frame as a whole structure. The motor side of this whole structure is fixed by a hinge shaft, and a hydraulic cylinder is arranged on the scrap box side. After the scrap collection is completed, the lifting frame is tilted by the lifting hydraulic cylinder.

[0055] The idler rollers 31 of the present invention can all be driving rollers, or some can be driving rollers and some can be idler rollers. When arranged in a mixed manner, the driving rollers and the idler rollers are preferably arranged alternately.

[0056] The number of the idler rollers 31 of the present invention is related to the rolling length of the scrap steel. The longer the rolling length, the more the number of the idler rollers 31. Preferably, there are 6 idler rollers, which are evenly distributed on the upper side of the lifting frame 34.

[0057] On the side of the idler rollers 31 of the present invention close to the scrap box 37, there is a guide plate 36 whose top is flush with or slightly lower than the idler rollers 31, so that the scrap steel slides down along the guide plate 36 into the scrap box 37. The guide plate 36 is installed on the lifting frame 34, and on the upper side of the end far from the idler rollers 31, there is an inclined surface sloping downward.

[0058] The steering device 4 of the present invention further includes a lower roller 42 arranged on the steering bracket 43 and arranged vertically with the upper roller 41. A conveying channel for the strip steel 7 is formed between the upper roller 41 and the lower roller 42. The upper roller 41 can be an idler roller or a driving roller, and the lower roller 42 can be a driving roller or an idler roller. Preferably, the lower roller 42 is a driving roller to provide support and forward power for the strip steel 7 during normal production. The distance between the upper roller 41 and the lower roller 42 can be a fixed value or a variable value. Preferably, the distance is adjustable.

[0059] The lifting drive device of the present invention is preferably a hydraulic drive. The lifting drive device includes two linear hydraulic cylinders symmetrically installed on both sides of the lifting bracket respectively, and the output end of the lifting drive device is connected to the lifting roller 54. The lifting bracket is provided with lifting roller guide holes matching the lifting roller 54 at both ends corresponding to the lifting roller 54, so that the lifting roller 54 moves vertically under the action of the lifting drive device. The linear hydraulic cylinder is preferably of a middle hinge structure type to improve the force condition.

[0060] The upper pinch roll 63 of the present invention is an idler roll, and the lower pinch roll 62 is a driving roll or an idler roll, preferably a driving roll, to provide support and forward power for the strip steel 7 during normal production. When the lower pinch roll 62 undertakes to provide support and forward power for the strip steel 7, the height position of the upper pinch roll 63 is preferably set to be adjustable, and its height position is adjusted by the upper pinch roll lifting drive device connected thereto. The upper pinch roll lifting drive device is a linear hydraulic cylinder or other drive devices with lifting functions.

[0061] The steering bracket 43, the clamping bracket 61, and the lifting bracket of the present invention can be independent of each other and installed independently, or they can share an installation base, and the steering bracket 43 and the clamping bracket 61 are installed on the lifting bracket to achieve sharing of the installation base.

[0062] A method for handling faults after an accident shear. The heat preservation cover downstream of the accident shear 1 is a fixed heat preservation cover 2, and a steering device 4, a lifting device 5, and a clamping device 6 are sequentially arranged on the outlet side of the fixed heat preservation cover 2; the strip steel 7 cut by the accident shear 1 is dragged out of the fixed heat preservation cover 2 by the lifting device 5 to leave space for subsequent waste collection, and at the same time, it is steered by the upstream steering device 4 to reduce the drag resistance, and the downstream strip steel 7 is clamped by the downstream clamping device 6 to prevent the downstream strip steel 7 from being dragged out during the process of the lifting device 5 lifting the strip steel 7; a waste buffer device 3 is arranged corresponding to the position of the fixed heat preservation cover 2, and the waste buffer device 3 adopts a lifting frame 34 that can automatically lift horizontally and can automatically tilt to one side; a plurality of carrying rollers 31 are arranged on the upper side of the lifting frame 34, which are used to provide support and forward power for the strip steel 7 during normal production, and descend to collect waste during fault handling, and the waste is dumped into the waste box 37 by tilting to one side. The clamping device 6 clamps the strip steel 7 through the upper pinch roll 63 and the lower pinch roll 62; during normal production, the lower pinch roll 62 provides support and forward power for the strip steel 7.

[0063] S1: When an accident occurs in the downstream process of the accident shear and shutdown is required, the strip steel continuously produced upstream is cut off by the accident shear;

[0064] S2: The clamping device clamps the cut strip steel to prevent the downstream strip steel from being dragged out during the process of the lifting device lifting the strip steel;

[0065] S3: The lifting device lifts the cut strip steel to drag it away from the fixed heat preservation cover to leave space for waste collection;

[0066] S4: The accident shear cuts the continuously advancing upstream strip into pieces so that the upstream equipment can continuously produce without stopping, and the lifting frame of the waste material buffer device descends to collect the cut strip.

[0067] S5: Cut off the strip pulled out from the fixed heat preservation cover, and reset the lifting device and the clamping device.

[0068] S6: After the equipment failure is handled, the lifting frame of the waste material buffer device tilts towards the waste material box to dump the waste material into the waste material box.

[0069] S7: The lifting frame of the waste material buffer device resets to make the idler roll horizontal to support the strip.

[0070] Specifically, it includes the following steps:

[0071] S1: When an accident occurs in the downstream process of the accident shear 1 and shutdown is required, the upstream continuously produced strip 7 is cut off by the accident shear 1.

[0072] S2: The clamping device 6 clamps the cut strip 7 to prevent the downstream strip 7 from being pulled out during the process of the lifting device 5 lifting the strip 7.

[0073] S3: The lifting device 5 lifts the cut strip 7 to pull it away from the fixed heat preservation cover 2 to make room for waste material collection.

[0074] S4: The accident shear 1 cuts the continuously advancing upstream strip 7 into pieces so that the upstream equipment can continuously produce without stopping, and the lifting frame 34 of the waste material buffer device 3 descends to collect the cut strip 7.

[0075] S5: Cut off the strip 7 pulled out from the fixed heat preservation cover 2, and reset the lifting device 5 and the clamping device 6.

[0076] S6: After the equipment failure is handled, the lifting frame 34 of the waste material buffer device 3 tilts towards the waste material box 37 to dump the waste material into the waste material box 37.

[0077] S7: The lifting frame 34 of the waste material buffer device 3 resets to make the idler roll 31 horizontal to support the strip 7.

[0078] A strip production line includes a post-accident shear fault handling system, and the post-accident shear fault handling system adopts the above-mentioned post-accident shear fault handling system.

[0079] Embodiment

[0080] An accident shear post-fault treatment system mainly includes an accident shear 1, a fixed thermal insulation cover 2, a waste material buffer device 3, a steering device 4, a lifting device 5, and a clamping device 6. The lifting device 5 is used to lift the strip steel cut by the accident shear 1 to disengage from the fixed thermal insulation cover 2, providing space for subsequent operations of shredding the strip steel. The clamping device 6 clamps the strip steel to prevent the downstream strip steel from being pulled out during the lifting process by the lifting device 5. The steering device 4 steers the strip steel during the lifting process. The waste material buffer device 3 stores the shredded strip steel and automatically dumps the stored waste material into a waste material box 37. By using the fixed thermal insulation cover 2 to seal and thermally insulate the passing strip steel, heat loss is avoided, and it does not need to be opened whether in normal production or accident handling. Finally, the upstream equipment of the accident shear 1 can continuously produce without stopping, thereby achieving the purpose of simplifying the control process and equipment composition and improving efficiency. The specific structures and functions of the main components are as follows:

[0081] Fixed thermal insulation cover 2: Fixed on the ground foundation and remains stationary during production and fault treatment processes. The fixed thermal insulation cover 2 is used to seal and thermally insulate the passing strip steel during normal production to avoid heat loss. Compared with traditional thermal insulation covers, it does not need to be opened whether in normal production or accident handling, thus reducing the requirements for the production rhythm, simplifying the control process, and achieving an energy-saving effect at the same time.

[0082] Waste material buffer device 3: Mainly includes idler rollers 31, guide wheels 32, lifting hydraulic cylinders 33, lifting frames 34, fixed frames 35, guide plates 36, and waste material boxes 37. It is used to store the strip steel cut into pieces by the accident shear 1 and dump the waste material into the waste material box 37 after the accident is processed.

[0083] Idler rollers 31: Adopt a belt gear drive structure type, with a total of six pieces, equally spaced and installed on the lifting frame 34. They are used to provide support and forward power for the passing strip steel during normal production. They do not work during a fault and rise and fall with the lifting frame 34 to store the shredded strip steel.

[0084] Guide wheels 32: There are two in total, symmetrically installed at the lower part of the drive side of the lifting frame 34, used to guide the lifting frame 34 and be collinear with the center of the hinge shaft connection seat of the hydraulic cylinder on the drive side, so as to meet the requirement that the lifting frame 34 can rise, fall, and tilt under the drive of the hydraulic cylinder.

[0085] Lifting frame 34: Adopt a welded steel structure type, with six groups of installation interfaces for idler rollers 31 on the upper part; installation interfaces for guide wheels 32 on the lower drive side; and a hinge shaft connection seat for the hydraulic cylinder in the middle of the lower part. The center line of the guide wheels 32 is collinear with the center of the hinge shaft connection seat of the hydraulic cylinder, so that the lifting frame 34 can rise, fall, and tilt under the drive of the hydraulic cylinder.

[0086] Lifting hydraulic cylinder 33: Adopting the tail hinge structure type, there are two groups in total, with two pieces in each group, symmetrically installed on the fixed frame 35 respectively; the top is connected to the lifting frame 34; in case of a failure, it drives the lifting frame 34 to descend, stores the shredded strip steel, and after the accident is handled, the drive side lifting hydraulic cylinder 33 is lifted, and the operating side lifting hydraulic cylinder 33 remains stationary, so that the idler 31 is inclined to dump the waste into the waste bin 37.

[0087] Fixed frame 35: Adopting the welded steel structure type, with a hydraulic cylinder tail hinge shaft connection seat in the middle; symmetrically provided with guide grooves for the guide wheels 32 at both ends of the drive side, used to guide the guide wheels 32.

[0088] Guide plate 36: There are six pieces in total, respectively installed on the operating side bearing seats of each idler 31, used to guide the waste when the idler 31 is inclined to dump the waste.

[0089] Steering device 4: Mainly includes an upper roll 41, a lower roll 42 and a steering bracket 43; used to support the strip steel during normal production and steer the strip steel in case of a failure.

[0090] Upper roll 41: Adopting the idler roll structure type, installed on the steering bracket 43; does not work during normal production; in case of a failure, steers the lifted strip steel.

[0091] Lower roll 42: Adopting the belt gear drive structure type, installed on the steering bracket 43; used to provide support and forward power for the strip steel to pass during normal production; does not work in case of a failure.

[0092] Lifting device 5: Mainly includes a lifting hydraulic cylinder 51, a connecting rod 52, a fixed frame 53, a lifting roll 54 and a connecting frame 55; used to support the strip steel during normal production; in case of a failure, after the clamping device 6 clamps the strip steel, it lifts the strip steel, extracts the strip steel inside the fixed heat preservation cover 2, and provides space for the subsequent storage of the strip steel.

[0093] Lifting hydraulic cylinder 51: Adopting the middle hinge structure type, there are two groups in total, symmetrically installed on the fixed frame 53; the top is connected to the lifting roll 54; in case of a failure, it drives the lifting roll 54 to rise and drags the strip steel out of the fixed heat preservation cover 2.

[0094] Fixed frame 53: There is a hydraulic cylinder hinge seat at the upper part; there is a hollow waist-shaped long hole in the middle to provide lifting guidance for the lifting roll 54; there is an installation interface for the connecting frame 55 at the lower part; there are installation interfaces for the steering device 4 and the clamping device 6 on both sides respectively.

[0095] Clamping device 6: mainly includes a clamping bracket 61, an upper pinch roll 63, a lower pinch roll 62 and a pinch hydraulic cylinder 64; used to provide support and forward power for the strip during normal production; when a failure occurs, it clamps the strip to prevent the subsequent strip from being dragged out when the lifting device 5 lifts the strip, without achieving the purpose of dragging out the strip inside the fixed heat preservation cover 2.

[0096] Upper pinch roll 63 and lower pinch roll 62: there is one piece each. The upper pinch roll 63 adopts an idler roll structure type and is driven to lift and lower by the pinch hydraulic cylinder 64; the lower pinch roll 62 is driven by a gear motor; during normal production, the pinch hydraulic cylinder 64 drives the upper pinch roll 63 to open; when a failure occurs, the upper pinch roll 63 clamps the strip under the drive of the hydraulic cylinder.

[0097] The working principle of this embodiment is: when a failure occurs, the accident shear 1 immediately starts to cut the continuous strip; the pinch hydraulic cylinder 64 of the clamping device 6 presses down to clamp the strip, so as to prevent the subsequent strip from being dragged out during the process of lifting the strip; the lifting device 5 quickly lifts to pull out the cut strip from the fixed heat preservation cover 2 to avoid interference with the subsequent strip; the accident shear 1 continues to cut the subsequent strip into pieces and stack them on the carrying roller 31; thus ensuring that the equipment upstream of the accident shear 1 can continuously produce without stopping.

[0098] The working process of this embodiment is:

[0099] Step 1: When an accident occurs in the downstream process of the accident shear 1 and it is necessary to stop the machine, the continuous strip is cut by the accident shear 1;

[0100] Step 2: The clamping device 6 clamps the tail of the cut strip to prevent the downstream strip from being dragged out during the process of the lifting device 5 lifting the strip;

[0101] Step 3: The lifting device 5 lifts the strip and drags it away from the fixed heat preservation cover 2 to leave space for waste collection;

[0102] Step 4: The accident shear 1 cuts the upstream strip that continues to move forward into pieces and stacks them on the carrying roller 31;

[0103] Step 5: Manually cut the strip dragged out from the fixed heat preservation cover 2 and reset the lifting device 5 and the clamping device 6;

[0104] Step 6: After dealing with the equipment failure, the drive side lifting hydraulic cylinder 33 lifts, and the operation side lifting hydraulic cylinder 33 remains stationary, so that the carrying roller 31 tilts to dump the waste into the waste bin 37;

[0105] Step 7: The operation side lifting hydraulic cylinder 33 lifts and resets, so that the carrying roller 31 is horizontal to provide support for the strip.

[0106] The present invention can simplify the structure, reduce the requirements for the control rhythm, improve the efficiency and enhance the reliability of the system while meeting the function of handling faults after accident shearing.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An accident cut-off post-fault handling system, characterized in that: It includes a waste material buffer device, a steering device, a lifting device, and a clamping device that are sequentially arranged downstream of the accident shear along the strip steel transmission direction, as well as a fixed heat preservation cover arranged above the waste material buffer device; The waste material buffer device includes a lifting frame with a plurality of carrying rollers arranged on the upper side; the lifting frame can be automatically lifted horizontally and can be automatically tilted to one side; a waste material box is arranged on one side of the lifting frame to collect the waste material dumped from the lifting frame; The steering device includes a steering bracket and an upper roller arranged on the steering bracket and above the strip steel; The lifting device includes a lifting bracket and a lifting roller arranged on the lifting bracket and below the strip steel, and the lifting roller is connected with a lifting driving device to lift the lifting roller; The clamping device includes a clamping bracket and an upper pinch roll and a lower pinch roll arranged up and down on the clamping bracket. A conveying channel for the strip steel is formed between the upper pinch roll and the lower pinch roll, and the distance between the upper pinch roll and the lower pinch roll can be automatically adjusted to achieve automatic clamping of the strip steel; Two sets of independently controlled lifting driving devices are arranged on the lower side of the lifting frame. The two sets of lifting driving devices are installed on a fixed frame on the ground foundation and are respectively located on both sides of the lifting frame; Each set of lifting driving devices includes two linear hydraulic cylinders; the installation end of the lifting driving device is hinged to the fixed frame, and the output end is hinged to the lifting frame; guide wheels are arranged at both ends of the lifting frame corresponding to the hinge center line of a set of lifting driving devices and the lifting frame. Guide wheel guiding holes matching the guide wheels are opened at the positions of the fixed frame corresponding to the guide wheels, so that the guide wheels move vertically under the action of the corresponding lifting driving device; A guide plate with a top flush with or slightly lower than the carrying roller is arranged on one side of the carrying roller close to the waste material box. The guide plate is installed on the lifting frame, and a guiding surface inclined obliquely downward is arranged on the upper side of the end far from the carrying roller; The steering device further includes a lower roller arranged on the steering bracket and arranged up and down with the upper roller. A conveying channel for the strip steel is formed between the upper roller and the lower roller.

2. The accident cut-off fault processing system according to claim 1, characterized in that: All the carrying rollers are active rollers, or some are active rollers and some are inert rollers.

3. The accident shear post-fault processing system according to claim 1, wherein: There are 6 carrying rollers, which are evenly distributed on the upper side of the lifting frame.

4. The accident shearing post-fault processing system according to claim 1, characterized in that: The upper roller is an inert roller or an active roller, and the lower roller is an active roller to provide support and forward power for the strip steel during normal production.

5. The accident shearing post-fault processing system according to claim 1, characterized in that: The distance between the upper roller and the lower roller is adjustable.

6. The accident shear post-fault processing system according to claim 1, wherein: The lifting driving device includes two linear hydraulic cylinders symmetrically installed on both sides of the lifting bracket respectively, and the output end of the lifting driving device is connected with the lifting roller.

7. The accident shearing post-fault processing system according to claim 1, characterized in that: Lifting roller guiding holes matching the lifting roller are opened at both ends of the lifting bracket corresponding to the lifting roller, so that the lifting roller moves vertically under the action of the lifting driving device.

8. An accident shearing post-fault processing system according to claim 6, characterized in that: The linear hydraulic cylinder adopts a middle hinge structure type.

9. The accident shearing post-fault processing system according to claim 1, wherein: The upper pinch roll is an inert roller, and the lower pinch roll is an active roller to provide support and forward power for the strip steel during normal production.

10. The accident cut-off fault processing system according to claim 1, characterized in that: The height position of the upper pinch roll is adjustable, and its height position is adjusted by an upper pinch roll lifting driving device connected thereto.

11. The accident cut-off fault processing system according to claim 10, characterized in that: The upper pinch roll lifting driving device is a linear hydraulic cylinder.

12. The accident cut-off fault processing system according to claim 1, characterized in that: The steering bracket and the clamping bracket are both installed on the lifting bracket.

13. A method for handling faults after an accident cut, characterized in that: The thermal insulation cover downstream of the emergency shear uses a fixed thermal insulation cover. A turning device, a lifting device, and a clamping device are sequentially arranged on the outlet side of the fixed thermal insulation cover. The lifting device drags the strip steel cut by the emergency shear out of the fixed thermal insulation cover to leave space for subsequent waste collection. At the same time, it is turned by the upstream turning device to reduce the drag resistance, and is clamped by the downstream clamping device to prevent the downstream strip steel from being dragged out during the process of the lifting device lifting the strip steel. A waste buffer device is arranged corresponding to the position of the fixed thermal insulation cover. The waste buffer device uses a lifting frame that can automatically lift horizontally and can automatically tilt to one side. A plurality of carrying rollers are arranged on the upper side of the lifting frame, which are used to provide support and forward power for the strip steel during normal production, and descend to collect waste during fault handling, and tilt to one side to dump the waste into the waste bin. Specifically It includes the following steps: S1: When an accident occurs in the downstream process of the emergency shear and shutdown is required, the strip steel continuously produced upstream is cut by the emergency shear. S2: The clamping device clamps the cut strip steel to prevent the downstream strip steel from being dragged out during the process of the lifting device lifting the strip steel. S3: The lifting device lifts the cut strip steel to drag it away from the fixed thermal insulation cover to leave space for waste collection. S4: The emergency shear cuts the continuously advancing upstream strip steel into pieces so that the upstream equipment can continuously produce without shutdown. The lifting frame of the waste buffer device descends to collect the strip steel cut into pieces. S5: Cut off the strip steel dragged out of the fixed thermal insulation cover, and reset the lifting device and the clamping device. S6: After the equipment fault is processed, the lifting frame of the waste buffer device tilts towards the waste bin to dump the waste into the waste bin. S7: The lifting frame of the waste buffer device is reset to make the carrying rollers horizontal to provide support for the strip steel.

14. A method for handling faults after an accident shear according to claim 13, characterized in that: The clamping device clamps the strip steel through the upper pinch roll and the lower pinch roll. During normal production, the lower pinch roll provides support and forward power for the strip steel.

15. A strip steel production line, including a fault handling system after an emergency shear, is characterized in that: The fault handling system after the emergency shear is the fault handling system after the emergency shear according to any one of claims 1 to 12.

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