CN218361308U - Fault handling system after accident shear and strip steel production line - Google Patents

Abstract

The utility model relates to a fault handling system after an accident shear and a strip steel production line, belonging to the technical field of hot rolling strip steel continuous casting and rolling, comprising a waste material caching device, a steering device, a lifting device and a clamping device which are arranged at the downstream of the accident shear in sequence along the transmission direction of the strip steel, and a fixed heat preservation cover which is arranged above the waste material caching device; when the lower reaches of the accident scissors are out of order, the accident scissors cut off the strip steel, the steering device and the clamping device are matched with the lifting device to lift the cut strip steel to be pulled away from the fixed heat-insulating cover, the accident scissors cut the strip steel at the upper reaches which is continuously produced into blocks, meanwhile, the lifting frame of the waste material caching device descends to collect the strip steel which is cut into blocks, and the stored waste materials are automatically dumped to a waste material box, so that the structure for fault treatment after the accident scissors is simplified, the fixed heat-insulating cover is adopted to seal and insulate the current strip steel, and the strip steel is not required to be opened in normal production or accident treatment, thereby effectively avoiding heat loss and being beneficial to improving the quality of the strip steel.

Description

A fault handling system and strip steel production line after accident shearing

technical field

The utility model belongs to the technical field of continuous casting and rolling of hot-rolled strip steel, and relates to a fault processing system after accident shearing and a strip steel production line.

Background technique

Compared with the conventional hot-rolled strip steel production technology, the hot-rolled strip continuous casting and rolling technology has the benefits of energy saving and emission reduction. It has developed rapidly outside and has become an important choice path for green and intelligent hot rolling. The accident shear in the continuous casting and rolling process is responsible for 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 the downstream accident, which is conducive to reducing the production recovery time and reducing the replenishment of molten steel heat cost.

In the prior art, the fault handling system after accident shearing is mostly completed by swinging looper + lifting roller table + waste pushing device, but there are the following defects: (1) The waste processing system uses lifting roller table plus horizontal push rod and storage (2) The reliability is low and failures are prone to occur. When an accident occurs in the downstream process of the accident, in order to ensure that no steel piles up, it is required to quickly lift the belt tail. When it is necessary to restore During production, it needs to be quickly reset to provide support for the strip steel and avoid steel jamming at the head, so it is very prone to failure; (3) The structure is huge and complex, with high investment costs, low efficiency, and high control rhythm requirements.

Utility model content

In view of this, the purpose of the utility model is to provide a fault handling system and a steel strip production line after an accident shearing, so as to simplify the structure, improve the efficiency, and improve the reliability of the system.

In order to achieve the above object, the utility model provides the following technical solutions:

A post-accident shear failure processing system, including a waste buffer device, a steering device, a lifting device, and a clamping device arranged sequentially downstream of the accident shear along the strip conveying direction, and a fixed heat preservation cover arranged above the waste buffer device; The buffer device includes a lifting frame with a plurality of rollers arranged on the upper side. The supporting rollers are active rollers to provide support and forward power for the strip during normal production; the lifting frame can automatically rise and fall horizontally and can automatically tilt to one side; One side of the frame is provided with a waste box to collect the waste 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; the lifting device includes a lifting bracket and is arranged on the lifting bracket and is located The lifting roller on the lower side of the strip is connected with a lifting drive device to lift the lifting roller; the clamping device includes a clamping bracket and an upper pinch roller and a lower pinch roller arranged on the clamping bracket and arranged up and down. A strip conveying channel is formed between the 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 automatic clamping of the strip.

Optionally, two sets of independently controlled lifting drive devices are provided on the underside of the lift frame, and the two sets of lift drive devices are installed on fixed frames on the ground foundation and located on both sides of the lift frame respectively.

Optionally, each group of lifting drive devices includes two linear hydraulic cylinders; the mounting end of the lifting drive device is hinged on the fixed frame, and the output end is hinged to the lifting frame; the two ends of the lifting frame correspond to a group of lifting drive devices and the lifting frame A guide wheel is provided at the position of the hinged center line; a guide wheel guide hole matched with the guide wheel is provided at a position corresponding to the guide wheel on the fixed frame, so that the guide wheel moves vertically under the action of the corresponding lifting drive device.

Optionally, there are 6 idlers, which are evenly distributed on the upper side of the lifting frame.

Optionally, the side of the idler roller close to the waste bin is provided with a guide plate whose top is flush with the idler roller or slightly lower than the idler roller. Downward sloping guide surface.

Optionally, the steering device further includes a lower roller arranged on the steering bracket and arranged up and down with the upper roller, and a strip conveying channel is formed between the upper roller and the lower roller.

Optionally, the upper roll is an idler roll or a driving roll, and the lower roll is a driving roll to provide support and forward power for the strip during normal production.

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

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

Optionally, two ends of the lifting bracket corresponding to the lifting rollers are provided with guiding holes for the lifting rollers matching the lifting rollers, so that the lifting rollers move vertically under the action of the lifting drive device.

Optionally, the linear hydraulic cylinder adopts a hinged structure in the middle.

Optionally, the upper pinch roll is an idle roll, and the lower pinch roll is a driving roll to provide support and forward power for the strip during normal production.

Optionally, the height position of the upper pinch roller is adjustable, and its height position can be adjusted through the upper pinch roller lifting drive device connected to it.

Optionally, the lifting drive device for the upper pinch roller is a linear hydraulic cylinder.

Optionally, both the steering bracket and the clamping bracket are installed on the lifting bracket.

A strip steel production line, including a post-accident shearing fault processing system, which adopts the above-mentioned post-accident shearing fault processing system.

The beneficial effects of the utility model are:

1. When there is a fault in the downstream of the accident shear, the accident shear cuts off the strip steel, 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 preservation cover, and the accident shear will continue to produce the upstream strip steel Cut into pieces, and at the same time, the lifting frame of the scrap buffer device descends to collect the strips that have been cut into pieces, and automatically dumps the stored scrap into the scrap bin, which simplifies the structure and control process of fault handling after the accident.

2. The fixed heat preservation cover is used to seal and insulate the passing strip steel. No matter it is normal production or accident treatment, 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 strip steel.

3. It can simplify the structure, reduce the control rhythm requirements, improve the efficiency and improve the reliability of the system while satisfying the fault handling function after the accident.

Other advantages, objectives and features of the present utility model will be set forth in the following description to some extent, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be Get teaching from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is the schematic diagram of the fault processing system after the accident of the present invention is cut under the normal production state;

Fig. 2 is the structural representation of lifting device;

Fig. 3 is the structural representation of steering device;

Fig. 4 is the structural representation of clamping device;

Fig. 5 is a schematic structural diagram of a waste buffer device;

Fig. 6 is a structural schematic diagram II of the waste cache device;

Fig. 7 is a schematic diagram of the fault processing system of the utility model after an accident shearing in the fault processing state.

Reference signs: accident scissors 1, fixed heat preservation cover 2, waste buffer device 3, steering device 4, lifting device 5, clamping device 6, strip steel 7, idler roller 31, guide wheel 32, lifting hydraulic cylinder 33, lifting Frame 34, fixed frame 35, guide plate 36, waste bin 37, upper roller 41, lower roller 42, steering bracket 43, lifting hydraulic cylinder 51, coupling rod 52, fixed frame 53, lifting roller 54, connecting frame 55, clamping bracket 61, the lower pinch roller 62, the upper pinch roller 63, the pinch hydraulic cylinder 64.

Detailed ways

The implementation of the present utility model is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the illustrations provided in the following embodiments are only schematically illustrating the basic idea of the present utility model, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, accompanying drawing is only for exemplary illustration, and what represent is only schematic diagram, rather than physical figure, can not be interpreted as the restriction to the utility model; In order to better illustrate the embodiment of the utility model, some parts of accompanying drawing will The omission, enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

In the accompanying drawings of the utility model embodiment, the same or similar symbols correspond to the same or similar parts; The orientation or positional relationship indicated by "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, structure and operation with a specific orientation, so the terms describing the positional relationship in the drawings are only for illustrative purposes, and cannot be understood as limitations on the present utility model. For those of ordinary skill in the art , the specific meanings of the above terms can be understood according to specific situations.

Please refer to Figures 1 to 7, a fault handling system after an accident shear, including a waste buffer device 3, a steering device 4, a lifting device 5 and a clamping device 6 arranged successively downstream of the accident shear 1 along the transmission direction of the strip steel 7, and The fixed heat preservation cover 2 arranged above the waste buffer device 3; the waste buffer device 3 includes a lifting frame 34 with a plurality of supporting rollers 31 arranged on the upper side; the lifting frame 34 can automatically rise and fall horizontally and can automatically tilt to one side; the lifting frame One side of 34 is provided with scrap bin 37 to collect the waste material that dumps from lifting frame 34; Steering device 4 comprises steering bracket 43 and is arranged on steering bracket 43 and is positioned at the upper roller 41 of band steel 7 top; Lifting device 5 comprises lifting bracket And be arranged on the lifting support and be positioned at the lifting roller 54 of strip steel 7 lower sides, lifting roller 54 is connected with lifting driving device to promote lifting roller 54; Clamping device 6 comprises clamping support 61 and is arranged on clamping support 61 and The upper pinch roller 63 and the lower pinch roller 62 that are arranged up and down, form the delivery channel of the strip steel 7 between the upper pinch roller 63 and the lower pinch roller 62, and the upper pinch roller 63 and the lower pinch roller 62 The spacing can be automatically adjusted to realize automatic clamping of the strip steel 7 .

When a failure occurs downstream of accident shear 1, accident shear 1 cuts off the strip steel 7, and the steering device 4 and clamping device 6 are used to cooperate with the lifting device 5 to lift the strip steel 7 cut off by accident shear 1 to be dragged away from the fixed heat preservation cover 2. Accident shear 1 cuts the continuously produced upstream steel strip 7 into pieces, and at the same time, the lifting frame 34 of the waste buffer device 3 descends to collect the cut strip 7 and automatically dumps the stored waste into the waste bin 37 . The utility model not only simplifies the structure and control process of fault handling after accident shearing, but also adopts the fixed heat preservation cover 2 to seal and heat-preserve the passing strip steel 7, no matter it is normal production or accident treatment, it does not need to be opened, effectively avoiding Heat loss, and is conducive to improving the quality of the strip.

The lifting frame 34 realizes automatic horizontal lifting and can automatically tilt to one side. 35 and are respectively located on both sides of the lifting frame 34; through the synchronous lifting of two groups of lifting driving devices, the horizontal lifting of the lifting frame 34 can be realized; through the lifting of one group of lifting driving devices, the other group does not move, and the lifting frame 34 can be realized. the tilt.

The lifting driving device should be hydraulically driven, and each group of lifting driving devices includes two linear hydraulic cylinders; the installation end of the lifting driving device is hinged on the fixed frame 35, and the output end is hinged with the lifting frame 34; the two ends of the lifting frame 34 correspond to one of them. A guide wheel 32 is provided at the position of the hinged center line of the group lifting drive device and the lifting frame 34; the position of the corresponding guide wheel 32 of the fixed frame 35 is provided with a guide wheel guide hole matched with the guide wheel 32, so that the guide wheel 32 can be lifted in the corresponding position. Vertical movement under the action of the driving device.

Lifting frame 34 realizes the automatic horizontal lifting and the structure that can automatically tilt to one side can also be: the horizontal lifting function is realized by adopting the mode that the motor concentrates to drive the elevator; The motor side of the overall structure is fixed by a hinged shaft, and a hydraulic cylinder is set on the side of the waste box; after the waste is collected, the lifting hydraulic cylinder is used to realize the inclination of the lifting frame.

The supporting rollers 31 of the present utility model can be all driving rollers, or partly be driving rollers, and partly be idle rollers; when arranged in a mixed manner, the driving rollers and the idle rollers should be alternately arranged.

The number of idler rollers 31 of the present utility model is related to the rolling length of scrap steel, the longer the rolling length, the more idler rollers 31, preferably 6, and evenly distributed on the upper side of the lift frame 34.

The idler 31 of the present utility model is provided with the guide plate 36 that the top is flush with the idler 31 or slightly lower than the guide plate 31 near the waste bin 37, so that scrap steel slides down to the waste bin 37 along the guide plate 36; the guide plate 36 is installed on On the lifting frame 34 , a guide surface inclined downwards is provided on the upper side of the end away from the idler roller 31 .

The steering device 4 of the present invention also includes a lower roller 42 arranged on the steering bracket 43 and arranged up and down with the upper roller 41 , and a conveying channel for the strip steel 7 is formed between the upper roller 41 and the lower roller 42 . The upper roll 41 is an idler roll or a driving roll, and the lower roll 42 is a driving roll or an idler roll, preferably a driving roll, so as to provide support and forward power for the steel strip 7 during normal production. The distance between the upper roller 41 and the lower roller 42 can be fixed or variable, preferably the distance is adjustable.

The lifting driving device of the present utility model should be hydraulically driven, and the lifting driving device includes two linear hydraulic cylinders symmetrically installed on both sides of the lifting bracket, and the output end of the lifting driving device is connected with the lifting roller 54. The two ends of the lifting bracket corresponding to the lifting roller 54 are provided with lifting roller guide holes matching the lifting roller 54, so that the lifting roller 54 moves vertically under the action of the lifting drive device. The linear hydraulic cylinder should adopt the middle hinge structure type to improve the force.

The upper pinch roll 63 of the utility model is an idle roll, and the lower pinch roll 62 is a driving roll or an idle roll, preferably a driving roll, so as to provide support and forward power for the strip steel 7 during normal production. When the lower pinch roller 62 is responsible for providing support and advancing power for the strip 7, the height of the upper pinch roller 63 should be adjustable, and its height can be adjusted by the upper pinch roller lifting drive connected to it. The lifting and lowering driving device of the upper pinch roller is a linear hydraulic cylinder or other driving devices with a lifting function.

The steering bracket 43, the clamping bracket 61, and the lifting bracket of the utility model can be independent of each other, and can be installed independently.

A strip steel production line, including a post-accident shearing fault processing system, which adopts the above-mentioned post-accident shearing fault processing system.

Example

A fault handling system after an accident shear mainly includes an accident shear 1, a fixed heat preservation cover 2, a waste buffer device 3, a steering device 4, a lifting device 5 and a clamping device 6; The steel is lifted to break away from the fixed heat preservation cover 2 to provide space for the subsequent operation of cutting the strip steel; the strip steel is clamped by the clamping device 6 to prevent the downstream strip steel from being dragged out during the process of lifting the strip steel by the lifting device 5; The device 4 turns the strip steel during the lifting process; stores the chopped strip steel through the waste material buffer device 3, and automatically dumps the stored waste material into the waste material bin 37; seals the passing steel strip by adopting a fixed heat preservation cover 2 Insulation to avoid heat loss, and no need to open whether it is normal production or accident treatment; finally, the upstream equipment of accident shear 1 can be continuously produced without stopping, so as to achieve the purpose of simplifying the control process and equipment configuration and improving efficiency. The specific structure and function of the main components are as follows:

Fixed heat preservation cover 2: fixed on the ground foundation, it will remain motionless during production and troubleshooting. The fixed heat preservation cover 2 is used to seal and insulate the passing strip steel during normal production to avoid heat loss; compared with the traditional heat preservation cover, no matter it is normal production or accident handling, it does not need to be opened, thereby reducing the impact on production. Rhythm requirements, simplify the control process, and at the same time achieve the effect of energy saving.

Waste buffer device 3: mainly includes idler roller 31, guide wheel 32, lifting hydraulic cylinder 33, lifting frame 34, fixed frame 35, guide plate 36 and waste material box 37; used to store strip steel cut into pieces by accident shears 1, And after handling the accident, the waste material is dumped in the waste material bin 37.

Idler roller 31: adopts the belt gear transmission structure type, and there are six pieces in total, which are equidistantly arranged and installed on the lifting frame 34; it is used to provide support and forward power for the passage of strip steel during normal production; Work, lift together with lifting frame 34, store the strip steel of shredding.

Guide wheel 32: There are two pieces in total, which are symmetrically installed on the lower part of the transmission side of the lifting frame 34, used to guide the lifting frame 34, and collinear with the center of the hinged shaft connection seat of the hydraulic cylinder on the transmission side, so that the lifting frame 34 can be moved in the hydraulic pressure. Lifting and tilting driven by the cylinder.

Elevator 34: It adopts welded steel structure type, and the upper part is equipped with the installation interface of six sets of idler rollers 31; the lower part is provided with the installation interface of the guide wheel 32 on the transmission side; The line is collinear with the center of the connecting seat of the hinged shaft of the hydraulic cylinder, so that the lifting frame 34 can be lifted and tilted under the drive of the hydraulic cylinder.

Lifting hydraulic cylinder 33: it adopts the tail hinged structure type, and there are two groups, each group of two pieces, which are respectively symmetrically installed on the fixed frame 35; the top is connected with the lifting frame 34; Store the shredded steel strip, and after handling the accident, the transmission side lifting hydraulic cylinder 33 is lifted, and the operating side lifting hydraulic cylinder 33 remains stationary, so that the idler roller 31 is tilted, and the waste material is dumped into the waste bin 37 .

Fixed frame 35: adopts welded steel structure type, the middle part is provided with the hydraulic cylinder tail hinged shaft connecting seat;

Guide plate 36: there are six pieces in total, which are respectively installed on the bearing seat on the operation side of each idler roller 31. When the idler roller 31 tilts and dumps waste materials, it guides the waste materials.

Steering device 4: mainly includes an upper roller 41, a lower roller 42 and a steering bracket 43; it is used to provide support for the strip steel during normal production, and to turn the strip steel when a failure occurs.

Upper roller 41: adopts idler roller structure and is installed on the steering bracket 43; it does not work during normal production; when a failure occurs, it turns the lifted strip steel.

The lower roller 42: adopts a belt gear transmission structure type and is installed on the steering bracket 43; it is used to provide support and forward power for the passage of the strip steel during normal production; it does not work when a failure occurs.

Lifting device 5: mainly includes lifting hydraulic cylinder 51, coupling rod 52, fixed frame 53, lifting roller 54 and connecting frame 55; used to provide support for strip steel during normal production; After strip steel, promote strip steel, the strip steel inside fixed heat insulation cover 2 is drawn out, provides space for the storage of follow-up strip steel.

Lifting hydraulic cylinder 51: It adopts the hinged structure in the middle, and there are two groups, which are symmetrically installed on the fixed frame 53; Pull out in the insulation cover 2.

Fixed frame 53: the upper part is equipped with a hydraulic cylinder hinge seat; the middle part is provided with a hollow waist-shaped long hole to provide lifting guide for the lifting roller 54; the lower part is provided with the installation interface connecting the frame 55; Mounting interface for device 6.

Clamping device 6: mainly includes clamping bracket 61, upper pinch roller 63, lower pinch roller 62 and pinch hydraulic cylinder 64; used to provide support and forward power for strip steel during normal production; when a fault occurs, clamp Tight strip steel, when avoiding lifting device 5 lifting strip steel, follow-up strip steel is dragged out, and do not reach the purpose of dragging out fixed heat preservation cover 2 inner strip steels.

The upper pinch roller 63 and the lower pinch roller 62: there is one piece each, the upper pinch roller 63 adopts an idler roller structure, and is driven up and down by the pinch hydraulic cylinder 64; the lower pinch roller 62 is driven by a gear motor; in normal production , the pinch hydraulic cylinder 64 drives the upper pinch roller 63 to open; when a failure occurs, the upper pinch roller 63 clamps the strip steel driven by the hydraulic cylinder.

The working principle of this embodiment is: when a fault occurs, the accident shear 1 starts immediately to cut off the continuous strip steel; the pinch hydraulic cylinder 64 of the clamping device 6 is pressed down to clamp the strip steel, thereby avoiding the process of lifting the strip steel. The follow-up steel strip is dragged out; the lifting device 5 is rapidly promoted, and the cut steel strip is extracted from the fixed heat preservation cover 2, so as to avoid interference with the follow-up steel strip; On the idler roller 31; thus ensure that the equipment upstream of the accident shear 1 can continue to produce without stopping.

The working process of this embodiment is:

Step 1: when an accident occurs in the downstream process of the accident shear 1 and needs to be shut down, the continuous production strip is cut off by the accident shear 1;

Step 2: the clamping device 6 clamps the tail of the strip steel after cutting, so as to prevent the downstream strip steel from being dragged out during the process of lifting the strip steel by the lifting device 5;

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

Step 4: Accident shear 1 cuts the continuously moving upstream strip steel into pieces and stacks them on the idler roller 31;

Step 5: Manually remove the strip steel dragged from the fixed heat preservation cover 2, and reset the lifting device 5 and the clamping device 6;

Step 6: After the equipment failure is handled, the lifting hydraulic cylinder 33 on the driving side is lifted, and the lifting hydraulic cylinder 33 on the operating side remains stationary, so that the idler roller 31 is tilted, and the waste is dumped into the waste bin 37;

Step 7: Operate the side lifting hydraulic cylinder 33 to lift and reset, so that the idler roller 31 is level and provides support for the strip steel.

The utility model can simplify the structure, reduce the control rhythm requirements, improve the efficiency and improve the reliability of the system while satisfying the fault handling function after the accident.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions shall be covered by the claims of the present utility model.

Claims (16)

1. A fault handling system after an accident shear, characterized in that: it includes a waste buffer device, a steering device, a lifting device and a clamping device arranged successively downstream of the accident shear along the strip conveying direction, and a waste buffer device arranged above the waste buffer device Fixed heat preservation cover; The waste buffer device includes a lifting frame with a plurality of rollers arranged on the upper side, and the supporting rollers are active rollers to provide support and forward power for the strip during normal production; the lifting frame can automatically rise and fall horizontally and can automatically tilt to one side; A waste box is provided on one side of the lifting frame to collect the waste 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; The lifting device includes a lifting bracket and a lifting roller arranged on the lifting bracket and positioned at the lower side of the strip, 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 roller and a lower pinch roller arranged up and down on the clamping bracket. A strip conveying channel is formed between the upper pinch roller and the lower pinch roller, and the upper The distance between the feed roll and the lower pinch roll can be automatically adjusted to achieve automatic clamping of the strip. 2. A fault handling system after accident shearing according to claim 1, characterized in that: two sets of independently controlled lifting drive devices are provided on the lower side of the lifting frame, and the two sets of lifting drive devices are installed on the ground foundation on the fixed frame and respectively located on both sides of the lifting frame. 3. The fault handling system after a kind of accident shearing according to claim 2, characterized in that: each group of lifting drive devices includes two linear hydraulic cylinders; the mounting end of the lifting drive device is hinged on the fixed frame, and the output end is connected The two ends of the lifting frame are provided with guide wheels corresponding to the hinged center line of a group of lifting drive devices and the lifting frame; the position of the fixed frame corresponding to the guide wheels is provided with guide wheel guide holes matching the guide wheels, so that the guide wheels The wheels move vertically under the action of the corresponding lifting drive. 4. A fault handling system after accident shearing according to claim 1, characterized in that there are 6 support rollers, which are evenly distributed on the upper side of the lifting frame. 5. A fault handling system after accident shearing according to claim 1, characterized in that: the side close to the waste box is provided with a guide plate whose top is flush with or slightly lower than the idler roller, and the guide plate is installed on The lifting roller is lowered on the frame, and the upper side of the end away from the supporting roller is provided with a guide surface inclined downward. 6. A post-shear fault handling system according to claim 1, characterized in that: the steering device further includes a lower roller arranged on the steering bracket and arranged up and down with the upper roller, between the upper roller and the lower roller Form a conveying channel for strip steel. 7. A fault handling system after accident shearing according to claim 6, characterized in that: the upper roll is an idle roll or a driving roll, and the lower roll is a driving roll to provide support and advance for the strip during normal production power. 8. A system for handling faults after accident shearing according to claim 6, characterized in that: the distance between the upper roller and the lower roller is adjustable. 9. A kind of fault handling system after an accident shearing according to claim 1, characterized in that: the lifting drive device includes two linear hydraulic cylinders respectively symmetrically installed on both sides of the lifting bracket, and the output end of the lifting drive device is connected to the Lifting roller connection. 10. A fault handling system after an accident shearing according to claim 1, characterized in that: the two ends of the lifting bracket corresponding to the lifting roller are provided with a lifting roller guide hole matching the lifting roller, so that the lifting roller is lifted Vertical movement under the action of the driving device. 11. A system for handling faults after shearing in an accident according to claim 9, wherein the linear hydraulic cylinder adopts a middle hinged structure. 12. The fault handling system after a kind of accident shearing according to claim 1, characterized in that: the upper pinch roll is an idle roll, and the lower pinch roll is a driving roll to provide support and support for the strip steel during normal production. forward momentum. 13. A post-shear fault handling system according to claim 1, characterized in that: the height position of the upper pinch roller is adjustable, and its height position is adjusted by the upper pinch roller lifting drive device connected to it . 14. A post-shear fault handling system according to claim 1, characterized in that: the lifting and lowering drive device for the upper pinch roller is a linear hydraulic cylinder. 15. The post-shear fault handling system according to claim 1, characterized in that: both the steering bracket and the clamping bracket are installed on the lifting bracket. 16. A steel strip production line, comprising a post-accident shearing fault handling system, characterized in that: the post-accidental shearing fault processing system is the post-accident shearing fault processing system described in any one of claims 1-15.

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