581results about "Rolling safety devices" patented technology

The invention relates to the technical field of electrical variable measurement, in particular to a rolling mill speed reducer monitoring and diagnosing system based on multi-source information fusion, which comprises an electrical parameter signal acquisition module for acquiring continuous readings of three-phase voltage and three-phase current of a rolling mill driving motor and synchronizing the readings. According to the method, the three-phase voltage and current data of the rolling mill driving motor are synchronously acquired, and the amplitude and phase are calibrated, so that a more accurate calibration electrical measurement set is obtained, and error propagation in a signal acquisition stage is effectively avoided; using the calibrated electrical data to directly calculate instantaneous input electric power, deducting motor loss to obtain an accurate motor shaft power sequence, and then using a Fourier transform method to extract key harmonic characteristics in a shaft power spectrum; and meanwhile, band-pass filtering and Hilbert transform analysis are carried out on the motor stator current, so that a clearer and more recognizable spectrum kurtosis value is obtained, and the judgment capability of current impact and periodic characteristics is enhanced.

The invention discloses a high-precision same-turning roller adjusting mechanism and a pre-stressed rolling mill. The two racks are symmetrically arranged; bearing seat adjusting devices are installed on the portions, corresponding to the two sides of the upper bearing seat, of each rack, and two second-stage worm and gear reduction gearboxes are arranged on the portions, corresponding to the upper bearing seat adjusting devices, of the top of each rack. A first-stage worm and gear reduction gearbox is arranged between the two second-stage worm and gear reduction gearboxes of each rack; worms of the two primary worm and gear reduction gearboxes are connected together through a connecting assembly and used for being connected with a driving device. The two axial sides of a worm wheel of each first-stage worm and gear reduction gearbox extend out to be coaxial with a worm of the corresponding second-stage worm and gear reduction gearbox. And a worm gear of each secondary worm and gear reduction gearbox is in transmission connection with the bearing seat adjusting device. Compared with a straight gear pair, a helical gear pair and the like, the two stages of worm and gear pair transmission mechanisms are arranged, so that the speed ratio is greatly increased, and the adjusting precision of the roller is improved.

The utility model relates to the technical field of strip steel rolling, in particular to galvanized strip steel production rolling equipment. According to the technical scheme, the device comprises an air outlet pipe, a fixing frame, rollers and an air cooler, the rollers are symmetrically and rotationally installed in the positions, close to the upper surface and the lower surface, of the interior of the fixing frame, cooling cavities are formed in the two rollers, and the two ends of each roller are fixedly connected with a rotary joint A and a rotary joint B correspondingly; connecting pipes A are fixedly connected to the outer sides of the two rotating joints A, the tail ends of the two connecting pipes A are fixedly connected to the outer surface of an air outlet pipe, and an air inlet pipe is fixedly connected to the tail end of the air cooler output pipe. In the hot rolling process of the galvanized strip steel, the temperature of the roller is reduced, the service life of the roller is prolonged, heat of the roller is converted into hot air, production raw materials needing to be heated can be preheated, meanwhile, the hot air drying device can be used for drying the galvanized strip steel after follow-up cleaning operation, and energy consumption is saved.

The invention relates to a method for preventing rear-end collision of strip steel in a coiling area. The method comprises the steps of collecting data, calculating safety time, feeding back the safety time, adjusting the speed of a finishing mill and the like. According to the method for preventing the rear-end collision of the strip steel in the coiling area, the traditional mode that the rolling rhythm is given depending on artificial experience is changed, only the preparation time of coiling field equipment is accurately calculated, the steel feeding condition is automatically judged, the fastest rhythm does not need to be given manually, the dependence on manpower is changed, and the production efficiency is improved. And the labor intensity of operators is reduced, the automatic steel rolling level is improved, and meanwhile, steel scrap accidents caused by inaccurate rolling rhythm calculation are avoided. Through a process control program, accurate tracking of the head and tail positions of the strip steel is achieved, automatic speed keeping or speed reduction is achieved through program judgment, effective automatic feedback control is provided for uncertainty of process control, and deep promotion of the extreme cost of a company on the production line is boosted.

The invention discloses a quick-response high-precision pre-stress rolling mill and a control method. The device at least comprises two frame type racks which are symmetrically arranged; a pre-stress cylinder is arranged on an upper beam of each frame type rack, and a driving shaft of each pre-stress cylinder downwards extends out of the upper beam and is positioned below the upper beam; upper bearing seat adjusting devices are mounted on the two sides of the prestress cylinder; an upper bearing seat is mounted between the upper bearing seat adjusting devices on the two sides; a driving shaft of the pre-stress cylinder is connected with the upper bearing seat and is used for providing pre-stress for the upper bearing seat; an adjusting hydraulic cylinder is arranged on a lower beam of each frame type rack, and a driving shaft of each adjusting hydraulic cylinder upwards extends out of the corresponding upper beam and is located above the corresponding lower beam; a lower bearing seat is arranged in the frame type rack below the upper bearing seat in a sliding manner; and a driving shaft of the adjusting hydraulic cylinder is connected with the lower bearing seat. The rolling precision is high, and the adjustment requirement of the rolling mill roll gap can be met through rapid and accurate adjustment of the lower bearing seat on line.

The invention discloses a roll bearing seat flexible connecting device, a quick-response high-precision pre-stress rolling mill and a control method. Comprising a frame type rack, and a roller bearing seat is arranged in the rack; a double-piston-rod hydraulic cylinder is arranged on an upper beam and / or a lower beam of the frame type rack; a connecting rod penetrates through a piston rod of the hydraulic cylinder; a concave-convex combined spherical pad sleeves one end, close to the bearing seat, of the connecting rod; the concave spherical pad is positioned on one side far away from the bearing seat, and the convex spherical pad is positioned on one side close to the bearing seat; the lower end of the connecting rod penetrates through the concave-convex combined spherical pad and the base to be connected to the roller bearing seat. The convex spherical pad can twist along with the bearing seat; the end, far away from the bearing seat, of the connecting rod extends upwards out of the rack and is in threaded connection with a nut, and the connecting rod between the nut and the rack is sleeved with a spring. According to the device, the combined spherical pad is arranged between the hydraulic cylinder and the bearing seat, so that the hydraulic cylinder and the bearing seat are flexibly connected, and the effect of protecting the hydraulic cylinder is achieved.

The invention discloses a self-speed-setting type metal pipe continuous cold rolling device, and relates to the technical field of metal pipe continuous rolling, the self-speed-setting type metal pipe continuous cold rolling device comprises a workbench, the workbench is fixedly connected with a connecting frame, one side of the connecting frame is provided with an inlet used for placing a blank pipe, and the other side of the connecting frame is provided with a metal pipe used for moving out the metal pipe formed by continuous cold rolling. The side, close to the inlet, of the connecting frame is rotationally connected with a rolling roller set, and the side, close to the outlet, of the connecting frame is rotationally connected with a shaping roller set. In the rolling process, when the load of the motor is large due to large resistance, the power of the middle forming roller is cut off, and only the power of the rolling rollers responsible for rolling and the power of the shaping rollers responsible for shaping are reserved, so that the rolling rollers and the shaping rollers on the two sides share the main working load, the overall pressure of equipment can be effectively relieved, and the service life of the equipment is prolonged. The service life of equipment is prolonged, abrasion of a transmission system and a motor is reduced, shutdown caused by too large pressure of the motor is avoided, and the production efficiency stability is guaranteed.

The invention discloses a production control method, device and equipment for a strip steel production line, the strip steel production line comprises a temper mill and a withdrawal and straightening machine, and the method comprises the steps that the actual tension of the temper mill is obtained; based on the actual tension and the set tension of the temper mill, the detected tension deviation of the temper mill is determined; if the detected tension deviation of the temper mill is within a preset first tension deviation range, first early warning information is output; if the detected tension deviation of the temper mill is within a preset second tension deviation range and the duration is larger than a first duration threshold value, first alarm information is output, a roll gap between the temper mill and the withdrawal and straightening machine is controlled to be opened, and the lower limit value of the second tension deviation range is larger than the upper limit value of the first tension deviation range. The technical problem that the production efficiency of a strip steel production line is low is solved.

The invention relates to the technical field of equipment state monitoring, in particular to an equipment state monitoring and maintenance system, and provides the following scheme: acquiring three-dimensional stress energy density distribution data of a roller bearing seat, predicting a roller surface microcrack expansion trend, and generating a dynamic residual life index; rolling force compensation is carried out by combining the ellipticity data of the section of the pipe; meanwhile, by synchronously collecting Barkhausen noise signals and cooling medium flow data, the cooling intensity is adjusted in real time; in order to ensure the roller health, a roller health weight is generated based on the dynamic residual life index, a rolling force compensation model is constructed, rolling force distribution is optimized through a particle swarm optimization algorithm, and the uniformity of the wall thickness of the pipe is ensured; the method effectively prevents roller damage and pipe wall thickness mutation, improves the production efficiency and the product quality, and prolongs the service life of equipment.

The invention discloses a quick-response high-precision pre-stressed rolling mill and a roller flexible axial movement preventing mechanism. The device at least comprises a rack, and a roller bearing seat is arranged in the rack; a rectangular guide groove is formed in the position, corresponding to the center of the bearing seat, of the rack. Positioning pins are mounted on two side surfaces of the bearing seat; the free end of the positioning pin extends into the rectangular guide groove; a sliding sleeve is sleeved outside the positioning pin in the rectangular guide groove; a pressing plate corresponding to the sliding sleeve is arranged at the end part of the free end of the positioning pin; the pressing plate is mounted at the end part of the free end of the positioning pin through a screw; two sliding blocks corresponding to the sliding sleeves are arranged in the rectangular guide groove in the direction of the roller shaft, the two sliding blocks are oppositely arranged, the outer shape of each sliding block is rectangular, a round hole is formed in the middle of each sliding block, the center of each round hole is located outside the corresponding sliding block, and the arc section is smaller than a semicircle; the sliding block is shorter than the sliding sleeve. The roller drives the bearing seat to rotate around the center of the bearing seat under the radial rolling force, and the working condition of equipment is improved through flexible connection.

The invention provides a roller state judgment method and device, equipment, a storage medium and a product. The method comprises the following steps: acquiring operation data of a target roller, wherein the operation data comprises stress data in the operation process of the target roller; inputting the operation data into a preset fatigue life prediction model to obtain the expected residual life of the target roller; the fatigue life prediction model is obtained based on training of historical rolling data of a sample roller, and the historical rolling data comprises at least one of stress data, material data, process data and use data; extracting stress data in the operation data, and inputting the stress data into a preset damage model to obtain damage information of the target roller; and determining the damage state of the target roller based on the expected residual life and the damage information. And the target roller state is judged in combination with data in multiple aspects, so that the judgment accuracy of the roller state is improved, and the maintenance requirement of the target roller is determined more accurately.

The utility model relates to the field of battery pole piece manufacturing, and discloses a roller cleaning mechanism which comprises two mounting plates, a scraper support is arranged between the two mounting plates, one end of the scraper support is provided with a blade gland, and the other end of the scraper support is provided with an angle positioning wheel. A scraper assembly is arranged between the blade gland and the scraper support and comprises a first scraper and a second scraper. When the mounting plate drives the scraper assembly to be pushed out, the angle positioning wheel firstly makes contact with the surface of the roller body, then the angle of the scraper support is automatically adjusted according to the pushing-out distance of the mounting plate till the scraper assembly is attached to the surface of the roller body, and impurity removal work is achieved along with rotation of the roller body. According to the mechanism, through overlapped installation of the first scraper and the second scraper, the problems that an existing mechanism is not thorough in cleaning and the service life of the scrapers is short are solved, the number of times of replacing the scrapers is greatly reduced, and the working efficiency of pole piece manufacturing is improved.

The invention discloses a multi-roller system efficient non-ferrous metal fine control calendering unit, and relates to the related field of non-ferrous metal processing, the multi-roller system efficient non-ferrous metal fine control calendering unit comprises a workbench located on the horizontal ground, a preheating module is installed at the upper end of the left side of the workbench, a non-ferrous metal plate extends into the preheating module, and the other end of the non-ferrous metal plate extends into a calendering frame; the bottom of the calendering frame is fixed to the top of the workbench. A first conveying pipe is further connected to one side of the air conveying piece, one end of the first conveying pipe is arranged on one side of the limiting mechanism, and a multi-position cooling mechanism is further arranged at the upper end of the limiting mechanism and achieves cooling treatment on the non-ferrous metal plate in different directions. According to the multi-roller-system efficient non-ferrous metal precise control calendering unit, the multi-direction cooling mechanism is arranged, the upper end and the lower end of a calendered non-ferrous metal plate can be subjected to multi-direction cooling treatment through the arrangement of the multi-direction cooling mechanism, and later machining of the calendered non-ferrous metal plate is facilitated.

The invention discloses an intelligent early warning system for stainless steel cold rolling pipeline butterfly valves, and relates to the technical field of cold rolling production process monitoring, the system comprises a filtering tank, a plurality of oil outlet butterfly valves, a liquid level detection unit and a control module, the liquid level detection unit is arranged in the filtering tank and is used for collecting liquid level data of rolling oil in real time; the control module is used for calculating a speed curve of the liquid level changing along with time based on the liquid level data, comparing the liquid level descending speed with a preset speed threshold value so as to judge the operation state of the multiple oil outlet butterfly valves and outputting corresponding multi-stage early warning information; according to the invention, single-valve-level accurate detection can be realized, unfiltered rolling oil is prevented from entering the oil cleaning tank, the defect rate of spot marks on the surface of a steel coil is reduced, the qualification rate of cold-rolled products is improved, meanwhile, the manual inspection cost is reduced, and the system intelligence and maintenance convenience are improved; the technical problems of limited adaptive scene, accurate detection, information distortion, misjudgment risk and lack of an automatic early warning mechanism in the existing early warning technology are solved.

The invention discloses a method for controlling dynamic steel biting and slipping of an inlet rack of a hot continuous rolling mill. A lower working roller and a lower supporting roller are sequentially arranged below a rolling center of the hot continuous rolling mill, and an upper working roller and an upper supporting roller are sequentially arranged above the rolling center of the hot continuous rolling mill; the method comprises the steps that the distance between the top of a lower working roller and a rack bottom plate is elevation; a base plate adjusting area is arranged between the bottom of the lower supporting roller and a machine frame bottom plate, when the supporting roller is replaced to calculate a base plate, the elevation is lifted by 2-10 mm, and the head of the strip steel is tightly attached to the lower roller face to be gripped in when entering an inlet machine frame; the roller diameter range of F1 to F3 is 0-30 mm, the roller diameter range of F4 to F7 is 0-20 mm, and all the maximum roller diameters are applied to a rack F1, a rack F2 and a rack F3; setting roll gap + impact bounce = outlet thickness; all mechanical gaps are eliminated through zero-adjustment pre-pressing of a new roller; the clamping force of the pinch rollers to the strip steel is 5-20 kN, and meanwhile the rotating speed of the pinch rollers is matched and synchronous with the speed of the roller way. According to the invention, the dynamic biting slip of the inlet rack can be effectively reduced.

The application discloses a kind of hot rolling mill set roll motor overload pre-determination method.The method includes: pre-setting a current sampling time;In the current sampling time of pre-setting, the roll motor current data of each rolling unit in hot rolling mill set is periodically sampled;The maximum overload rate of hot rolling mill set roll motor in current sampling time is calculated;Judge whether the maximum overload rate is less than overload rate determination threshold;Judge whether the next piece of steel computer set rolling force is less than overload rolling force determination threshold;If the maximum overload rate is greater than overload rate determination threshold and computer set rolling force is greater than overload rolling force determination threshold, then determine that hot rolling mill set roll motor will overload.The roll motor overload pre-determination method of the application can accurately predict the hot rolling mill set roll motor overload jump power in time, control the rolling rhythm of hot rolling mill set, and avoid the situation that hot rolling mill set roll motor appears jump power and stops due to the too fast rolling rhythm of hot rolling mill set.

The invention belongs to the technical field of metal material processing and manufacturing, and particularly relates to a rolling mill working state monitoring method and system, a terminal and a storage medium, the method comprises the following steps: pre-defining state monitoring parameters, and setting a corresponding threshold value for each state monitoring parameter; the state monitoring parameters comprise the duration of the steel plate passing through a roller in the rolling mill, the displacement of the roller in the rolling mill and the temperature of an oil film bearing bush in the rolling mill. According to the method, the working state of the rolling mill can be monitored from multiple dimensions by pre-defining the state monitoring parameters and setting the corresponding threshold values; the monitored state monitoring parameters are stored, learning is carried out according to the comparison result of the state monitoring parameters, and the threshold value corresponding to each state monitoring parameter is updated, so that the threshold values can be automatically adjusted along with the change of the actual operation condition of the rolling mill, different production scenes can be better adapted, the monitoring accuracy and reliability are improved, and the production efficiency is improved. And the phenomena of false alarm and missing alarm are reduced.

The utility model relates to a connecting pin device capable of preventing movement and saving insertion and extraction labor, which comprises a drawing roller floor pin seat, a pushing roller floor pin seat and a connecting pin, a web plate of the drawing roller floor pin seat is provided with a double-aperture pin hole and a long slotted hole, and a web plate of the pushing roller floor pin seat is provided with two round pin holes. The connecting pin penetrates through the double-aperture pin hole and the round pin hole to be connected with the drawing roller floor pin seat and the pushing roller floor pin seat, a limiting ring groove is formed in one end of the connecting pin, the limiting ring groove is provided with a connecting pin baffle for limiting, the connecting pin baffle is provided with a seat baffle for limiting, and an inserting opening is formed in one side of the seat baffle and inserted into a pushing roller floor pin seat web. The connecting pin has the advantages that the connecting pin is prevented from moving back and forth in the axis direction, the connecting pin is prevented from falling off due to vibration, the connecting reliability of the push roller floor pin seat and the pull roller floor pin seat is enhanced, the workload of production personnel is reduced, and potential safety hazards are eliminated.

The invention provides a roller which comprises a roller assembly, the roller assembly comprises a roller body, a center shaft, an inner flow channel, a first rotating connector, a second rotating connector, a cooling liquid input pipeline and a cooling liquid output pipeline, the center shaft is connected to the two ends of the roller body, and the inner flow channel is arranged in the center shaft and keeps consistent with the center line of the center shaft; the first end of the first rotating joint and the first end of the second rotating joint are respectively connected with the central shaft, the second end of the first rotating joint and the second end of the second rotating joint are respectively connected with the cooling liquid input pipeline, and cooling liquid enters the inner flow channel through the cooling liquid input pipeline and flows out from the cooling liquid output pipeline; and the shading assembly comprises a curved-surface shading plate, and the curved-surface shading plate is arranged between the laser reflection light path channel and the roller body and used for shading the reflected laser to reduce heat input of the roller body. According to the roller, the problem of overheating burning loss of reflected laser to the roller is solved, and the stability and reliability of material increase-rolling compounding are improved.

The invention discloses a quick-response high-precision pre-stressed rolling mill and a rolling mill stand. Comprising two racks which are symmetrically arranged; the two racks are positioned and connected through the rack connecting and positioning mechanism; a prestress cylinder is arranged on an upper beam of each rack, and an adjusting hydraulic cylinder is arranged on a lower beam of each rack; or, an adjusting hydraulic cylinder is arranged on the upper beam of each rack, and a prestress cylinder is arranged on the lower beam of each rack; bearing seats are respectively arranged at the free ends of the prestress cylinder and the adjusting hydraulic cylinder; wherein the pre-stress cylinder is used for providing pre-stress for the bearing seat; the adjusting hydraulic cylinder is used for driving the bearing seat to slide up and down; bearing seat adjusting devices are mounted on the rack on the two sides of the prestress cylinder and correspond to the two sides of the bearing seats, and are used for adjusting the vertical positions of the corresponding bearing seats; and the rollers are arranged on the two bearing seats which are correspondingly arranged. The rolling precision is high, and the adjustment requirement of the rolling mill roll gap can be met through rapid and accurate adjustment of the lower bearing seat on line.

The invention discloses a roller way type wire collecting, conveying and cooling system, and relates to the technical field of wire coil production, the roller way type wire collecting, conveying and cooling system comprises a collecting drum and a lifting table which are vertically and correspondingly arranged, the side parts of the collecting drum and the lifting table are provided with coil lifters, and the lifting table is in sliding fit with a core frame; a coil input roller way and a coil core frame recovery roller way travel closed-loop-shaped roller way are included, a coil overturning table for overturning and discharging a coil core frame with a coil is arranged on the boundary line of the coil input roller way and the coil core frame recovery roller way, a coil conveying vehicle is arranged at the output end of the coil overturning table, and a rotating table is arranged at the break angle of a conveying roller way. The device has the technical advantages that the proximity switches and the gratings are additionally arranged on the lifting table, the coil turning table, the coil collecting barrel, the rotating table and the coil lifting machine, in-place reminding of a coil core frame is achieved, whether all mechanisms act in place or not is detected, and full-automatic and unmanned operation of the system is achieved; and the cooling assemblies are arranged in the winding drum in the circumferential direction, coiling and cooling of the wire rods are integrated, and the efficient cooling effect is achieved.

The utility model provides a working roller axial moving device and a rolling mill, comprising a hydraulic sleeve connected with the rolling mill; the piston is mounted on the inner side of the hydraulic sleeve; the sliding sleeve is installed on the outer side of the hydraulic sleeve, the sliding sleeve is connected with the piston, and a first boss is arranged on the outer side of the sliding sleeve; the rotating sleeve is rotationally connected to the outer side of the sliding sleeve, a second boss is arranged on the rotating sleeve, and a driving groove is formed between the second boss and the first boss; and the driving assembly is used for driving the rotating sleeve to rotate. The mounting seat has the advantages that the mounting seat is compact in structure and can be mounted on the operation side of the rolling mill, the second boss can be matched with the first boss to limit the driving boss by rotating the rotating sleeve and moving the second boss, and the mounting seat can be conveniently detached and maintained in the later period.

An accurate cooling system for hot-rolled coil matched warehouse steel coil stacking and chopping comprises a steel coil temperature measuring device, an industrial personal computer, a draught fan, an electric cabinet and a spraying system, an infrared thermal imager monitors total radiation infrared thermogram information and high-temperature alarm information of warehouse area steel coil stacking and chopping in real time, and the information is transmitted to the industrial personal computer through a router; the fans are distributed between two rows of steel coil stacks on the edge of the reservoir area and supply air to channels between the adjacent steel coil stacks; the electric control box controls the starting and stopping actions of corresponding equipment and adjusts the power of a motor of the spraying pump station, and the spraying system controls the work of a spraying head; a PLC module is arranged in the electric control box and used for storing a steel coil accurate cooling control algorithm, and parameters such as on-off instructions of the draught fan, the electromagnetic valve, the water supplementing pipe and the pneumatic valve are obtained through calculation. The device has the advantages that the structure is simple, the building difficulty is low, the hot rolled steel coil pile can be accurately and uniformly cooled, the hydroelectric energy loss is greatly reduced, the cooling time is greatly shortened, the production rhythm is improved, and smooth production is ensured.

The invention discloses a preparation method of an electric heating short-distance type copper-aluminum composite board, which comprises the following steps of: preparing a protection tunnel, arranging a feed port and a discharge port at the front end and the rear end of the protection tunnel, pulling an aluminum plate strip and a copper plate strip into the protection tunnel, and enabling the aluminum plate strip to be in sliding contact with a high potential in the protection tunnel, an aluminum plate strip is used as a base strip to be overlapped with a copper plate strip in a deviation rectifying mode to form a pre-rolled plate strip, a roller of a rolling mill makes contact with a low potential, then inert gas and hydrogen are continuously introduced into a protection tunnel, the pre-rolled plate strip is electrified through the high potential and the low potential, and the pre-rolled plate strip is heated through low voltage and large current; and sealing at the feed port and the discharge port through continuous flame, rolling the pre-rolled plate strip into a composite plate strip under the traction of a rolling mill, annealing the composite plate strip, and performing cold rolling to obtain the copper-aluminum composite board. Compared with the prior art, oxide generation can be effectively reduced, the plate strip heating efficiency is improved, and the quality stability of the copper-aluminum composite plate obtained through hot rolling compounding is high.

The invention relates to the technical field of metal rolling, and discloses aluminum alloy plate strip rolling machining equipment which comprises a workbench and further comprises a support fixedly connected to the lower portion of the workbench and used for supporting the whole equipment. The two fixing plates are mounted on the workbench and used for fixing the rolling mechanism and the guide mechanism; the rolling mechanism is arranged on the fixing plate and used for rolling the aluminum alloy plate strip. The guide mechanism is arranged on one side of the rolling mechanism and used for guiding the feeding angle when the aluminum alloy plate strip is rolled. By arranging the guide mechanism and utilizing the cooperation of the guide roller and the third spring, an aluminum alloy plate strip can be accurately guided to enter the rolling rollers, it is ensured that the feeding angle is accurate, meanwhile, the distance between the rolling rollers can be adjusted in real time according to the thickness of the plate strip through the dynamic adjusting function of the arc-shaped connecting rod and the first spring, and the production efficiency is improved. And the stability of the rolling process is guaranteed, so that the rolling quality is improved, and the rejection rate caused by uneven thickness is reduced.

The invention provides a multifunctional anti-accident early warning system for strip steel, which relates to the technical field of strip steel rolling and comprises a production line for producing strip steel, a monitoring module arranged on the production line and a control module electrically connected with the monitoring module. The production line comprises an uncoiler, a welding machine, a rolling mill and a coiler which are sequentially connected through a stepping beam, and the monitoring module comprises a coiling monitoring module arranged on the side, away from the welding machine, of the uncoiler, a defect monitoring module arranged between the uncoiler and the rolling mill and an outlet quality monitoring module arranged between the rolling mill and the coiler. The monitoring module is applied to the strip steel production line, so that the accuracy and the timeliness of production monitoring are remarkably improved, production accidents are reduced, the labor cost is reduced, the product quality and the production automation level are improved, and remarkable technical advantages and application prospects are achieved.

The invention relates to the technical field of cold-rolled plate strip steel production, in particular to a method and a system for judging and inhibiting backward slip during high-speed rolling of cold rolling. Through real-time detection and analysis of change rules of front and back tension and rolling force of the rolling mill stand, the rolling backward slip phenomenon can be automatically judged, an alarm is given, meanwhile, the rolling speed is controlled in a closed-loop mode, and then high-speed rolling backward slip is effectively restrained under the condition that the highest production efficiency of the rolling mill is achieved; according to the cold rolling high-speed rolling backward slip judgment and inhibition method and system, the backward slip phenomenon occurring in the rolling process can be accurately and efficiently recognized, an alarm prompt is given out in time, and backward slip inhibition measures are automatically executed; according to the method, the belt breakage accident caused by high-speed rolling rear sliding can be effectively reduced, meanwhile, the production efficiency of a rolling mill unit is greatly improved, the hardware arrangement cost is low, and the application prospect is wide.

The present application relates to hot strip production process technical field, specifically to a kind of coreless hot coil box open tail folding processing method, comprising: receiving intermediate blank thickness, for the equipment preset of hot coil box;After hot coil box completes coiling and uncoiling, when the hot metal detector HMD at the outlet of hot coil box becomes OFF state, according to the distance of slab tail reaching flying shear is calculated based on speed parameter;The thickness of slab tail is detected using pinch roll at the outlet of hot coil box;When the thickness of slab tail is detected and the thickness mutation value reaches the threshold range of preset, it is determined that tail uncoiling fails, and an abnormal instruction is sent to flying shear cutting system;After flying shear cutting system receives the abnormal instruction, on the basis of preset cutting gauge length, increase compensation length, generate updated tail cutting length;Flying shear cutting system starts cutting according to updated tail cutting length, so that actual cutting position avoids folding part of slab tail.The present application avoids flying shear blade collapse even mill broken roll accident.

A rolling mill of the present invention is a rolling mill including: a pair of upper and lower rolls disposed in a housing; and a roll chock that holds each of the upper and lower rolls. A liner having a vibration reducing function is provided on at least one of a housing counter surface of the roll chock and a housing surface corresponding to the housing counter surface.

The sectional type direct-drive inner-cooling rolling mill comprises a control base, one side of the upper end of the control base is fixedly connected with a centering device body, the other side of the upper end of the control base is provided with a distance adjusting mechanism in a positioning mode, and the upper end of the distance adjusting mechanism is fixedly connected with the direct-drive inner-cooling rolling mill. According to the sectional type direct-drive inner-cooling rolling mill with the centering assembly, flexible adjustment can be conducted according to the requirements of different materials and product specifications through the arranged distance adjusting mechanism, so that the rolling mill adapts to various production technologies, the flexibility of a production line is improved, the heat dissipation effect can be enhanced through the arranged cooling and heat dissipation mechanism, and the service life of the rolling mill is prolonged. The good heat dissipation effect can keep the rolling mill to operate within the optimal working temperature range, the situation that the working efficiency is reduced due to the too high temperature is avoided, the situation that parts are damaged due to the fact that the rolling mill is too hot is prevented, and the service life of equipment is prolonged.