450results 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 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 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 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 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.

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 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 utility model relates to the field of steel production equipment, and discloses a novel anti-stripping water collecting pipe for a steel production hot continuous rolling process finishing mill frame, which comprises a protection pipe and a collecting pipe main body, an anti-corrosion hydrophobic layer is fixedly connected to the inner side of a pipe body of the collecting pipe main body, and a plurality of spraying mechanisms are arranged on the outer side of the collecting pipe main body. The spraying mechanism comprises a spray head, the upper end of the spray head is fixedly connected with a rotary knob, and the two sides of the spray head are fixedly connected with clamping blocks. According to the utility model, through the unique structural design and the maintenance window of the convenient buckle structure sealing cover, quick positioning and maintenance are facilitated when the spray head and an internal pipeline break down, the downtime of equipment is shortened, and the production efficiency is improved. And the nozzle adopts the design of quick plug-pull type connection and independent filter arrangement, so that the risk of nozzle blockage is effectively reduced, and the nozzle is convenient to replace and maintain. The stability, durability and maintenance convenience of the header are further enhanced through optimization of the protection structure and the internal anti-corrosion hydrophobic layer.

A movable material receiving groove matched with a perforating machine comprises a groove body and a frame body, the frame body comprises a fixed frame and a movable frame which are located on the two sides of the bottom of the groove body respectively, a plurality of horizontal hinge holes are formed in the lower portion of the movable frame, the upper portion of the movable frame extends outwards to form an extension table, and the extension table is hinged to the piston end of an oil cylinder. The movable frame is arranged on the opposite side of the feeding direction. And a plurality of extension tables and oil cylinders are arranged. And the movable frame is provided with a vertical pin hole. And an anti-abrasion lining plate is fixed in the groove body. Compared with the prior art, the technical effects of the utility model are that: when the device is movable, the device can be well replaced at the background, and the time for replacing the wear-resistant lining plate is shorter.

The invention discloses a high-temperature alloy hot rolling production line side guide plate machining process, and relates to the technical field of side guide plates, the high-temperature alloy hot rolling production line side guide plate machining process comprises the steps that S1, rolling limiting is conducted, specifically, when the front end of a hot rolling strip plate enters the surface of a conveying roller in a conveying unit, the left side and the right side of the hot rolling strip plate are limited by blocking arms; s2, primary buffering is conducted, specifically, a second buffering piece on the outer side of a blocking arm and a first buffering piece on the top of a lower pressing roller are used for buffering offset vibration in the moving process of the hot rolling strip plate; s3, guard plate guiding: after the hot-rolled strip plate passes through the space between a lower pressing roller and a conveying roller, if the hot-rolled strip plate deviates again, the deviation of the hot-rolled strip plate is limited by a composite plate in a guide plate unit; and S4, independent buffering is conducted, specifically, the multiple composite plates are distributed on the side portion of the hot rolling strip plate, and the multiple independent composite plates are connected through the grooves and the insertion blocks to achieve overall linkage. The longitudinal and transverse impact resistance of the hot-rolled strip plate can be buffered through the base plate and the third buffering piece, the breakage rate of the composite plate is reduced, the damage of the independent composite plate does not affect the whole ceramic, and replacement is easier.

This invention belongs to the field of optical inspection technology for roll surfaces, and specifically discloses a laser optical inspection device for roll surfaces. This device includes an operating table with a mounting base on top, on which a workpiece is mounted. A mounting frame, driven by a drive structure, is positioned behind the mounting base and has two laser probes mounted on it for inspecting the workpiece. This invention uses a drive mechanism to switch between the two laser probes on the mounting frame, allowing the probes to inspect cold and hot rolls separately without frequent downtime for adjustments, thus improving inspection efficiency. Furthermore, after switching, the mounting frame is supported and fixed by a support structure, improving the stability of the mounting frame and laser probes after switching. This prevents probe misalignment and shaking caused by equipment vibration or roll rotation, avoiding optical path deviation and increased measurement errors, and ultimately improving inspection accuracy.

The utility model relates to the field of finishing mill protection, in particular to a safety protection device for a finishing mill, which is provided with a finishing mill body and a roller rotatably arranged in the finishing mill body. A protection mechanism is arranged on the finishing mill body, the protection mechanism comprises a fixing plate and protection plates, and a driving assembly used for driving the two protection plates to rotate is fixedly arranged on the fixing plate; the driving assembly comprises a connecting plate, a sliding plate slidably arranged on the fixing plate and a driving device used for driving the sliding plate to slide, one end of the connecting plate is fixedly arranged on the protection plate, the other end of the connecting plate is in limiting rotating connection with one end of the sliding plate, and the other end of the sliding plate is matched with the driving end of the driving device; the protective plate is switched between a closed state and an open state under the condition that the driving device drives the sliding plate to slide and the sliding plate is in limited rotating connection with the connecting plate, and the roller can be disassembled and maintained under the condition that external protection is not disassembled.

The application belongs to the technical field of steel coil protection, and particularly relates to a quick-release type steel coil protection cover, which comprises a steel coil body, protection mechanisms are arranged at both ends of the steel coil body, the protection mechanism comprises a first central circular plate, a circular protection cloth is fixed to the circumferential sidewall of the first central circular plate, the rear wall of the circular protection cloth can be in contact with the steel coil body, a central rotating shaft is fixed to the front center of the first central circular plate, one end of the central rotating shaft is fixed with a second central circular plate, and a protection assembly is arranged between the second central circular plate and the first central circular plate. The mutual cooperation between the protection mechanisms at both ends of the steel coil body realizes the plugging of the inner diameter of the steel coil body and the two end steel coil layers, reduces the possibility of the rusting of the steel coil caused by the humid air entering the steel coil, protects the steel coil body which cannot be timely packed under the protection of the protection mechanisms, and increases the waiting time of the packing of the steel coil body.

The utility model discloses aluminum alloy rolling equipment with an energy-saving effect, which comprises a rolling box, a rolling component is arranged in the rolling box, a feed port and a discharge port are respectively arranged on the side surfaces of the rolling box, an infrared heater is fixedly connected to the inner wall of the rolling box, chutes are respectively arranged on the inner top walls of the feed port and the discharge port, and the infrared heater is fixedly connected to the inner top wall of the rolling box. And the inner wall of the sliding groove is slidably connected with a sealing piece, the upper surface of the sealing piece is fixedly connected with a spring, and the top end of the spring is fixedly connected with the inner top wall of the sliding groove. The infrared heater is arranged to heat the interior of the calendering box so as to achieve heat preservation and softening of aluminum alloy materials, the sealing piece is arranged to seal the feeding port and the discharging port so as to reduce heat loss, and the spring is arranged to adjust the height of the sealing piece so as to adapt to the thickness of the aluminum alloy materials. And the sealing effect on the feeding opening and the discharging opening is improved, so that the aluminum alloy rolling equipment with the energy-saving effect has the energy-saving effect.

A steel stacking stopping device in cold rolling comprises a box body for steel bars to pass through, material passing holes which correspond front and back and are used for the steel bars to pass through are formed in the front end face and the rear end face of the box body, and an elastic induction plate is fixedly arranged at the position, close to the rear end face of the box body, in the box body and is a conductive plate. One end of the elastic induction plate is fixedly connected to the box body through an insulator, the other end of the elastic induction plate is suspended, a through hole corresponding to the material passing hole is formed in the elastic induction plate, the diameter of the through hole is larger than that of the material passing hole, the elastic induction plate is electrically connected with a high-potential end, and the high-potential end is connected with a potentiometer. The device is simple in structure, reliable in detection and simple and convenient in post-treatment, and the elastic steel plate automatically resets after the stacked steel is removed.

The invention discloses a waterproof sealing device for a supporting roller of a medium plate, and relates to the technical field of rolling mills, the waterproof sealing device comprises a sealing ring arranged between the end face of the supporting roller and a bearing seat, the sealing ring is in a circular ring shape, and the outer side of the end face of the supporting roller is sleeved with the sealing ring; the fixing device is used for fixing the sealing ring between the end face of the supporting roller and the bearing seat, and the fixing device comprises a fixing hoop arranged on the outer side of the sealing ring in a sleeving mode. The sealing ring is arranged between the end face of the roll body of the supporting roll and the bearing seat, the fixing hoop is adopted to fix the sealing ring, and the sealing ring can prevent cooling water and water vapor of the roll from entering the bearing seat, so that the waterproof performance of the rolling mill supporting roll is remarkably improved, the service life is prolonged, the failure rate is reduced, and smooth production is guaranteed.