4995 results about "Hydraulic ram" patented technology

The invention discloses hydraulic machine equipment suitable for die forging and blank making of various flanges and a forging method, and belongs to the technical field of flange production equipment.The hydraulic machine equipment suitable for die forging and blank making of various flanges comprises a base and further comprises a top plate, the top plate is arranged on the upper side of the base, and a guide column is arranged between the top plate and the base; the first hydraulic oil cylinder is fixedly arranged on the top plate, and a piston rod of the first hydraulic oil cylinder is connected with a pressure head; all positions of the forge piece are sequentially arranged on the lower side of the pressing head through the swing mechanism, all positions of the forge piece are conveniently and evenly forged, workers do not need to shake the forge piece back and forth by utilizing a clamp or a clamp on the side, and when the pressing head moves upwards every time, the die holder is automatically separated and is matched with the air spraying opening to blow away waste chips generated in the die holder during forging and pressing of the forge piece; and excessive scraps are prevented from being accumulated in the die holder and being matched with the forge piece gradually filling the die holder again, the follow-up processing time of the flange forge piece is shortened, and the flange processing efficiency is improved.

The low-pressure casting and pouring system comprises a base, a sliding table, a lower die, a first rack, a second rack and an upper die, the sliding table is fixedly connected to the upper surface of the base in the left-right direction, the bottom of the lower die is fixedly connected with the top of the sliding table, and the lower die moves left and right through the sliding table; the first machine frame and the second machine frame are fixedly connected to the left end and the right end of the upper surface of the base correspondingly, the number of the first hydraulic oil cylinders is two, and the two first hydraulic oil cylinders are fixedly connected to the left end and the right end of the upper surface of the first machine frame correspondingly; the output end of the first hydraulic cylinder is fixedly connected with the top of the upper die. Alternating vibration of the lower die is achieved, the liquidity of molten aluminum can be improved, discharging of bubbles in a die cavity of the lower die can be enhanced, the quality of a formed aluminum bar is guaranteed, time and labor are saved during single grabbing and discharging of the aluminum bar, and the casting efficiency of the aluminum bar is improved.

The invention discloses a hydraulic rammer tamping construction parameter adjusting method based on sensing parameter real-time feedback, and relates to the technical field of hydraulic rammer tamping construction.The hydraulic rammer tamping construction parameter adjusting method comprises the steps that a multi-mode sensing monitoring network is constructed to collect full-amount construction data, a wavelet packet decomposition algorithm is adopted for noise layered suppression, and a multi-mode sensing monitoring network is established; constructing a working condition associated data set in combination with the construction stage labels; based on the working condition associated data set, establishing a dynamic tamping effect evaluation model, and outputting a deviation index moment of time-space distribution; training a parameter adjustment intelligent model based on the deviation index matrix and a transfer learning mechanism, generating a multi-parameter collaborative adjustment strategy, and carrying out working condition adaptation degree scoring and adjustment risk early warning on strategy output; and adjusting the intelligent model based on incremental learning and model distillation technology optimization parameters. According to the method, the multi-modal sensing network, the geological dynamic quantitative model, the improved entropy weight method, the migration and reinforcement learning and the lightweight deployment technology are fused, so that full-chain intelligent dynamic optimization and safe controllable execution of hydraulic rammer construction parameters are realized.

The invention discloses an active and passive combined electro-hydraulic actuator and a method thereof, and belongs to the field of hydraulic control. The electro-hydraulic actuator comprises a hydraulic source, a hydraulic oil cylinder, a control system, an oil liquid outlet, a low-rigidity energy accumulator, a high-rigidity energy accumulator and a high-pressure energy accumulator, the hydraulic oil cylinder is an asymmetric hydraulic oil cylinder, the control system comprises a rotary servo valve and a rapid rotary switching valve, the rotary servo valve has a three-position four-way function, and the rapid rotary switching valve has a three-position four-way function. An oil outlet of the hydraulic cylinder is respectively connected with the oil liquid outlet, the low-rigidity energy accumulator, the high-rigidity energy accumulator and the high-pressure energy accumulator through a quick rotating switching valve. Active control and passive mode switching of the hydraulic oil cylinder are achieved by rotating the servo valve; connection switching among the energy accumulators is achieved by rapidly rotating the switching valve, so that the electro-hydraulic actuator is in different passive modes. The actuator system is high in response speed, the actuator can complete active and passive mode switching under the same stride, and the energy utilization rate is improved to the maximum extent.

The invention belongs to the technical field of piston rod machining equipment, particularly relates to a hydraulic oil cylinder piston rod machining device and a method thereof, and aims to solve the problem that an existing hydraulic oil cylinder piston rod machining device cannot integrally grind and polish a piston rod at a time. The bottom of the bearing platform is fixedly connected with the upper side of the base, the upper side of the base is fixedly connected with four symmetrical stand columns, and the upper sides of the four stand columns are fixedly connected with the same top plate. According to the hydraulic oil cylinder piston rod machining device and method, when the piston rod body is ground and polished through the device, fixing points, at the two ends of the piston rod body, of the clamp are switched; and therefore, when the device grinds and polishes the piston rod body, the whole piston rod body can be polished without halting, taking down the piston rod body and then fixing the piston rod body, the machining efficiency of the device on the piston rod body is remarkably improved, and the yield of the device is improved.

The invention discloses a hydraulic oil cylinder with high buffering performance, and relates to the technical field of hydraulic oil cylinders, the hydraulic oil cylinder comprises a reciprocating motion assembly, and the reciprocating motion assembly is used for driving a piston rod to do reciprocating rectilinear motion. During use, when a sealing piston is about to move to a stroke terminal, a buffer ring generates thrust on an annular plate, so that two nitrile rubber pads are sunken, meanwhile, a reset spring is extruded and contracted, and under the cooperation of the reset spring and the nitrile rubber pads, the sealing piston is preliminarily buffered, and in addition, a connecting rod pushes a buffer plate to move in an arc-shaped cover; the piston rod body is filled with hydraulic oil and gradually extrudes polyurethane foam, the polyurethane foam has good buffering performance, the filled hydraulic oil generates viscous resistance, the extruded hydraulic oil can enter the buffering cavity through the oil inlet cavity, secondary buffering is conducted on the sealing piston under the cooperation of the polyurethane foam and the filled hydraulic oil, the movement speed of the piston rod body is gradually reduced, and the sealing effect is improved. And stable speed reduction and stopping are realized.

A grating steel frame assembling apparatus having adjusting and locating functions, comprising a machining platform (1), wherein locating slide slots (33) are formed in the machining platform (1), the locating slide slots run through the machining platform, vertical plates (12) are respectively arranged at two ends of the machining platform, and the two vertical plates are both fixedly connected to the machining platform and are parallel to each other; and hydraulic cylinder telescopic devices (2), wherein two hydraulic cylinder telescopic devices are provided and are respectively located at two ends of the machining platform, and each hydraulic cylinder telescopic device comprises a telescopic plate (25), a fixing clamp (24), and limiting clamping plates (26). The hydraulic cylinder telescopic devices and locating devices (3) are arranged on the machining platform and are respectively used for supporting and limiting workpieces to be bent; workpieces are placed on one side of limiting clamping notches (261) and locating clamps (32), so as to limit the workpieces; in each hydraulic cylinder telescopic device, a hydraulic cylinder drives the fixing clamp to slide on the machining platform to apply a force to one end of each workpiece. The apparatus can satisfy the machining requirements for different workpiece sizes, and improve the workpiece welding efficiency and fixing precision.

The invention relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic locking oil cylinder assembly which comprises a cylinder body, a small cylinder barrel is arranged at the upper end of the cylinder body, an oil inlet pipe is arranged on the left side of the rear end of the cylinder body, a piston rod is arranged at the right end of the cylinder body, a locking oil pipe is arranged on the right side of the front end of the cylinder body, and an external oil pipe is correspondingly arranged on the front side of the locking oil pipe. When the fixing plate slides leftwards, a stabilizing inclined block is also extruded, the stabilizing inclined block drives a connecting rod to slide downwards on a supporting plate and compress a second spring until the fixing plate crosses the upper end of the stabilizing inclined block, the stabilizing inclined block is reset upwards under the action of the second spring, and at the moment, the left end of the fixing plate is just attached to the right end of the locking oil pipe and stops moving; the stable inclined block is beneficial to supporting the lower side of the fixing plate, the stability of the fixing plate and the blocking plate inserted into the locking oil pipe is ensured, the situation that the blocking plate automatically moves rightwards when bearing large oil pressure is avoided, and the stable locking and supporting effect in the cylinder body is ensured.

The invention provides a horizontal sliding bearing test bed, which belongs to the field of sliding bearing safety operation and detection and comprises a main transmission system, a driving system, a radial loading system, a heating system and a hydraulic system. A sliding bearing seat in the radial loading system is inversely fixed on a lower loading plate and is detachably sleeved and fixed on a test bearing, and a test bed applies pressure to the lower loading plate through a hydraulic cylinder to apply radial load to a test sliding bearing. A rotary swing hydraulic oil cylinder in the main transmission system provides power to test the horizontal sliding bearing. The hydraulic system is connected with the rotary swing hydraulic oil cylinder and the radial loading oil cylinder and can achieve closed-loop control over torque and radial loading force. The heating system simulates a high-temperature working condition through a heating box, and a test bearing can be set to be tested at a specific high temperature. According to the invention, large load detection can be realized, working condition simulation is accurate, data such as bearing working torque and service life can be detected, and comprehensive and multi-size adaptability is realized.

The invention discloses a film cutting device for a rice transplanting and film covering all-in-one machine, which comprises a first support beam, a second support beam, a first mounting plate, a second mounting plate, a hydraulic oil cylinder, a knife rest and a cutter, and the first support beam and the second support beam are connected with each other; one end of the hydraulic oil cylinder is hinged to the upper end of the second support beam, and the other end of the hydraulic oil cylinder is hinged to the tool rest which is hinged to the lower end of the second support beam; the first mounting plate and the second mounting plate are detachably connected, the second mounting plate is fixed on the first bracket beam, and the first mounting plate is detachably mounted on the rice transplanting and film mulching all-in-one machine; the strength of the first mounting plate is smaller than that of the first support beam and the second support beam. The first mounting plate is arranged as a safety device, bending deformation of the first support beam and the second support beam is avoided, the first mounting plate is easy to replace, the whole film cutting device does not need to be replaced, and the maintenance cost is reduced.

The invention relates to the technical field of ship hydraulic monitoring, and discloses a marine ship hydraulic oil cylinder state monitoring and sealing performance early warning system. A multi-source sensing data acquisition module of the system synchronously obtains multi-dimensional time sequence operation data of an oil cylinder through a vibration sensor, a pressure sensor and a temperature sensor; the data preprocessing fusion module is used for carrying out noise suppression, timestamp alignment and multi-modal fusion on the data to generate a standardized oil cylinder state feature sequence; the sealing characteristic depth extraction module is used for analyzing sealing cavity pressure fluctuation, piston rod displacement oscillation and sealing piece deformation trend characteristics from the characteristic sequence; the multi-scale state evaluation module is used for calculating a sealing performance degradation gradient and a dynamic operation stability coefficient according to the characteristics; and the early warning decision generation module is used for generating a sealing failure risk level and an early warning control instruction based on the calculation result. According to the system, stable operation of the oil cylinder is guaranteed, and the maintenance cost and the safety risk are reduced.

The invention belongs to the technical field of shield tunneling attitude control, and discloses a shield tunneling attitude control method and system based on digital twinning, and the method comprises the steps: building a shield tunneling machine and a digital twinning model corresponding to the actual operation state of the shield tunneling machine based on tunneling parameters, environmental geological parameters and tunnel geometric parameters in the tunneling process of the shield tunneling machine; the current total thrust of a hydraulic oil cylinder of the shield tunneling machine propelling system is obtained, the current total thrust is input into the digital twinborn model, and the current current of a proportional overflow valve in the shield tunneling machine propelling system is obtained; based on the direct proportion relation between the current of the proportional overflow valve and the total thrust of the hydraulic oil cylinder, the current current of the proportional overflow valve is adjusted so as to correspondingly adjust the current total thrust of the hydraulic oil cylinder, the axis deviation of the shield tunneling machine corresponding to the adjusted total thrust approaches zero, and the needed current total thrust of the hydraulic oil cylinder is obtained; and controlling tunneling of the shield tunneling machine by using the required current total thrust of the hydraulic oil cylinder. The control precision of the tunneling posture of the shield tunneling machine can be improved.

The invention discloses an automatic assembly production line control system for hydraulic oil cylinders. The automatic assembly production line control system mainly comprises a main control cabinet and a logistics line used for conveying various parts of the hydraulic oil cylinders to assembly positions in sequence. A plurality of units are arranged on the two sides of the logistics line according to the assembling sequence of the hydraulic oil cylinders. The machine set comprises an automatic assembling machine set of a hydraulic oil cylinder piston guide sleeve sealing ring, an automatic assembling machine set of a hydraulic oil cylinder rod, a piston and a guide sleeve, and an automatic assembling machine set of the hydraulic oil cylinder rod, the piston and the guide sleeve, wherein the automatic assembling machine set is used for assembling the piston and the guide sleeve with the cylinder rod in sequence. The hydraulic oil cylinder is assembled into an automatic assembling unit of a hydraulic oil cylinder barrel and a cylinder rod assembly of a finished oil cylinder, through a hydraulic oil cylinder automatic assembling production line control system, the assembling quality is improved through an automatic control technology, and the production efficiency is remarkably improved. And unmanned assembly is completely realized, the dependence on high-skill operators is reduced, the labor cost is reduced, and the artificial damage to the sealing element is reduced.

The invention discloses a method and system for detecting and adjusting the posture of a tractor tool, and belongs to the technical field of agricultural equipment. Comprising the following steps: acquiring acceleration data and angular velocity data generated during operation of a tractor tool; processing the acceleration data and the angular velocity data through an attitude fusion algorithm to obtain machine and tool attitude information; generating a control signal based on a comparison result of the machine posture information and a preset horizontal standard value, and sending the control signal to an execution mechanism, so that the execution mechanism adjusts the machine posture; the executing mechanism comprises a multi-way proportional electromagnetic valve, a hydraulic oil cylinder and a suspension device, the hydraulic oil cylinder is arranged on the suspension device, and the multi-way proportional electromagnetic valve is communicated with the hydraulic oil cylinder. Electro-hydraulic proportional control and sensor control are combined, agricultural implements hung on a tractor running on a fluctuating land parcel are controlled to be kept horizontal, and stable operation after control is achieved. The problem that actual operation conditions of agricultural machinery are not considered in the prior art is solved.

The invention relates to the technical field of glycerol triacetate preparation, in particular to an esterification phase splitter for preparing glycerol triacetate, which comprises a tower tray arranged in a rectifying tower, umbrella-shaped covers are uniformly distributed on the upper surface of the tower tray, and the tower tray comprises a movable tray, a fixed tray, a riser and an adjusting mechanism. By optimizing the structure of the umbrella-shaped cover and the design of the adjusting mechanism, the problems of a viscous layer and entrainment caused by high viscosity of glycerol triacetate are solved, by reducing the diameter of the bottom of the umbrella-shaped cover and reducing the comprehensive height of the overflow weir, the liquid flowing space is enlarged, the liquid retention time is shortened, and by forming an air inlet groove and an adjusting hydraulic oil cylinder, the liquid retention time is shortened. The gas-phase flow area is increased, gas-liquid contact is optimized, entrainment is reduced, through adjustment of the hydraulic oil cylinder, adaptation to the requirements of different reaction stages is achieved, the height of the downcomer is increased, and the flooding risk is reduced.

The invention provides a hydraulic ram pump system, comprising: a hydraulic ram pump body comprising a main body pipeline, a water escape valve, a water delivery valve and a pressure tank, the main body pipeline comprises a main body pipe and a third branch pipe which are communicated, the main body pipe is provided with a water inlet, a first interface and a second interface, the third branch pipe is provided with a third interface, the water escape valve is arranged at the first interface, and the pressure tank and the water delivery valve are arranged at the second interface; the piston assembly is hermetically mounted on the third branch pipe in a reciprocating motion manner from the third interface; the piston assembly, the transmission conversion device, the rotation transmission device and a rotor of the power generation device are sequentially in transmission connection, and the transmission conversion device is arranged to convert reciprocating linear movement of the piston assembly into one-way rotation of the rotation transmission device. The rotation transmission device is arranged to drive the rotor of the power generation device to rotate unidirectionally. According to the water hammer pump system, when the water hammer pump body continuously operates, the piston assembly can periodically do reciprocating linear movement, and power generation of the power generation device can be achieved.

The invention relates to the technical field of structural engineering shock isolation, in particular to a quasi-zero stiffness shock isolation device based on hydraulic negative stiffness and a design method thereof. A quasi-zero stiffness shock isolation device based on hydraulic negative stiffness comprises a vertical bearing unit which comprises at least one vertical spring, and the two ends of the vertical spring are connected to the top face of a lower connecting plate and the bottom face of an upper connecting plate respectively; the negative stiffness unit comprises a hydraulic oil cylinder and a piston rod, the piston rod extends into the hydraulic oil cylinder, and the hydraulic oil cylinder and the piston rod are hinged to the lower connecting plate and the upper connecting plate respectively, or the hydraulic oil cylinder and the piston rod are hinged to the upper connecting plate and the lower connecting plate respectively; the distance between the upper connecting plate and the lower connecting plate is increased or decreased to drive the length of the piston rod extending into the hydraulic oil cylinder to change so as to provide negative stiffness. The problems that in the prior art, when a nonlinear vibration isolation system provides negative stiffness in a metal horizontal spring compensation mode, a quasi-zero stiffness working zone is narrow, the bearing capacity is low, and the requirement for installation precision is high are solved.

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a sealing mechanism of a hydraulic oil cylinder, which comprises a cylinder body, a telescopic rod is arranged at one end of the cylinder body, and a sealing shell is arranged outside the cylinder body; and the anti-collision assembly is mounted in the sealing shell. The elastic force is applied to the pressing ring through the first spring, it can be guaranteed that the pressing ring can be tightly attached to the connecting position of the cylinder body and the telescopic rod, the connecting position of the cylinder body and the telescopic rod is sealed through the sealing gasket, and compared with a traditional hydraulic oil cylinder, the sealing effect of the hydraulic oil cylinder is greatly improved; by means of the design of the anti-collision assembly, certain anti-collision capacity is added to the anti-collision hydraulic cylinder, compared with a traditional hydraulic cylinder, the anti-collision hydraulic cylinder can protect the connecting position of the cylinder body and the telescopic rod with certain capacity, the situation that the connecting position is affected by external force, the telescopic rod is inclined, and consequently pressure relief and the like are possibly caused is avoided, and practical safety is improved.

The invention discloses an intelligent jacking system for bridge construction. The intelligent jacking system comprises a data acquisition module, a control calculation module, an execution driving module and a self-learning optimization module. The data acquisition module acquires pressure value and displacement value data between the hydraulic oil cylinders and the bridge floor in real time to generate a pressure-displacement data matrix; the control calculation module calculates real-time stress and settlement state information of the bridge pile through an intelligent control algorithm library based on the matrix; and the execution driving module calls a preset control library according to the state information and generates a corresponding control instruction to drive the hydraulic system. And the self-learning optimization module dynamically optimizes control parameters by constructing a learning model of equipment working data.

The invention discloses a pipe jacking construction device and method based on an artificial freezing technology, and belongs to the technical field of pipe jacking construction, the pipe jacking construction device comprises a base, a side plate vertically fixed at the rear end of the base, hydraulic oil cylinders symmetrically mounted at the two ends of the inner side of the side plate, and a jacking table fixed between the output ends of the hydraulic oil cylinders. The strip-shaped grooves are evenly formed in the outer side edge of the top table in an annular array mode, the sliding bases are slidably arranged in the strip-shaped grooves, the hydraulic chucks are rotatably installed on the sliding bases, the hydraulic chucks can be used for fixing the drill rod during use, the drill rod is driven to rotate through the drilling motor, and therefore in the using process of the device, the drilling efficiency of the drill rod is improved. A drill rod can be inserted into soil, a hole for installing a freezing pipe is formed in the outer side of a pipe jacking channel so that the freezing pipe can be conveniently inserted and installed, the functionality of the device is improved, in addition, when the device is used, the interval adjusting mechanism is matched, the hole opening position during freezing pipe installation can be adjusted according to the outer diameter of the pipe jacking, and practicability is higher.

The invention discloses a tire vulcanization mold line polishing device, and relates to the technical field of tire vulcanization mold machining, the tire vulcanization mold line polishing device comprises a base, the upper end of the base is fixedly connected with a hydraulic oil cylinder, and the movable end of the hydraulic oil cylinder is fixedly connected with a machining table; the grinding mechanism comprises a mounting frame fixedly connected to the upper end of the base, a rotating shaft is rotationally connected to the top in the mounting frame, a circular plate is fixedly connected to the side wall of the rotating shaft through a plurality of fixing rods, a plurality of sliding grooves are formed in the upper end of the circular plate, and two clamping grooves are symmetrically formed in the inner walls of the sliding grooves; the inner walls of the two clamping grooves are slidably connected with two clamping blocks, the side walls, close to each other, of the two clamping blocks are jointly and fixedly connected with a sliding block, and the upper end of the sliding block is rotatably connected with a first rotating rod. According to the tire mold polishing device, the distance between the polishing rollers is adjusted by driving the electric push rods to stretch or retract, so that the whole device can polish tire molds of various specifications, the application range is wide, and the practicability is higher.

The invention discloses a paper-plastic mold positioning auxiliary system capable of monitoring hydraulic pressure in real time through an AI. The paper-plastic mold positioning auxiliary system comprises an AI control center, a hydraulic monitoring unit, an air pressure monitoring unit, a positioning auxiliary execution unit, an abnormity protection unit and a data acquisition and transmission module. The hydraulic monitoring unit is used for collecting hydraulic oil cylinder pressure, temperature, hydraulic oil viscosity and equipment operation duration data; the air pressure monitoring unit collects air pressure, flow and valve delay time data of a pipeline valve; the data acquisition and transmission module transmits data to the AI control center, and the AI control center analyzes abnormity through a model and calculates a correction amount; the positioning auxiliary execution unit coordinates the positioning of the servo motor and the hydraulic oil cylinder; and the abnormal protection unit receives the early warning and starts a protection action. The system solves the problems of hydraulic monitoring lag and the like, realizes hydraulic and air pressure cooperative monitoring and positioning compensation, ensures production coherence and equipment safety, and is adaptive to automatic production of paper-plastic molds.

The utility model relates to the technical field of tunnel construction and underground space engineering construction, in particular to a TBM (Tunnel Boring Machine) hob performance test detection device based on linear rock breaking, which comprises a base, a frame is arranged on the base, and a rock breaking mechanism, a rock box mechanism, a rock breaking hob component and a rock box body are arranged in the frame. A load sensor is fixed between the tool support and the hydraulic oil cylinder, and a three-way force sensor is fixed between the tool support and the tool apron; a confining pressure sensor is arranged on the rock box body, a weighing device is arranged at the bottom end in the frame, and a photoelectric temperature integrated sensor is arranged on the weighing device. By monitoring various performance parameters such as hob load, temperature and abrasion in real time, analyzing hob diameter and weight changes, analyzing rock breaking effects of different hobs and researching a hob rock breaking mechanism, quantitative evaluation of performance differences of different hobs is achieved, reference is provided for manufacturers to manufacture and optimize hob performance, and the hob rock breaking performance evaluation device is suitable for large-scale popularization and application. And key guidance is provided for selection of tunnel project hobs and selection of construction parameters.

The invention relates to the technical field of subway tunnel construction, and discloses a water-rich soft stratum shield short-distance underpass operation subway tunnel construction method which comprises the following steps: S1, stratum advanced pre-reinforcement; s2, optimizing tunneling parameters; s3, posture deviation correction control is carried out; s4, synchronous grouting reinforcement is conducted; s5, a secondary slurry supplementing process; s6, monitoring the existing tunnel; and S7, stratum response monitoring. According to the water-rich soft stratum shield short-distance underneath passing operation subway tunnel construction method, superfine cement-water glass double-liquid slurry and macromolecule nanometer polymers are adopted for alternate grouting, a gradient permeation reinforcing layer is formed, and the problem that traditional water-rich soft stratum single-liquid slurry is prone to dilution is solved; formation resistance, cutterhead torque and soil bin pressure are analyzed in real time based on a BP neural network algorithm, thrust, propelling speed and cutterhead rotating speed are dynamically adjusted, the stability of an excavation face is ensured, the shield axis is controlled to be cheap through pressure feedback of a laser guiding system and a hydraulic oil cylinder, and disturbance to an existing tunnel is reduced.

The invention relates to an automatic vertical ring rolling mill. The technical problems that an existing ring rolling mill is low in automation degree, and a core roller is prone to bending are mainly solved. According to the technical scheme, the automatic vertical ring rolling machine comprises a rack, a motor, a speed reducer, a main body rack, an oil cylinder base, a driving roller, a hydraulic oil cylinder, a machine body main shaft, a transmission shaft, a core roller bearing seat, a lower base, a fixed supporting seat, a core roller, a roller holding machine body, a bearing seat driving oil cylinder and a self-aligning roller bearing. A motor and a speed reducer are arranged at the upper end of the rack, the speed reducer is connected with one end of a transmission shaft, self-aligning roller bearings are arranged at the shaft diameter position of the transmission shaft, and the self-aligning roller bearings are installed on the upper portions of the two sides of the main body rack. The driving roller is installed on the transmission shaft, the lower end of the machine body spindle is connected with a nut arranged on the bottom face of the fixed supporting seat, the roller holding machine body is installed at the upper end of the main machine frame and connected with the hydraulic oil cylinder, and the core roller is installed on the core roller bearing seat which is arranged on the fixed supporting seat.

The present invention discloses a technical field of coil leveling devices, specifically a coil leveling device for a laser cutting machine, comprising a roller support, the upper end of the roller support inner cavity is equidistantly connected to a plurality of lower rollers, the upper end of the roller support is fixedly connected to a concave support seat, a plate body is flatly laid on the lower roller, a plurality of hydraulic cylinders are symmetrically fixedly installed on the upper end of the concave support seat, the inner rods of the plurality of hydraulic cylinders pass downward through the upper end of the concave support seat and are fixedly connected to a lifting and adjusting plate. The present invention has the following beneficial effects: when working, the plate body moves from back to front along the upper end of the lower roller, and the plate body passes through the bottom of the hot air knife, the heating roller, the leveling roller, and the edge pressing tube in turn; the plate body is heated by the hot air knife and the heating roller in the heating mechanism, especially the edge of the plate body is heated emphatically, and the heated plate body is leveled by the leveling roller.

The utility model discloses a hydraulic oil cylinder for adjusting a movable arm of a loading machine, and relates to the technical field of hydraulic oil cylinders. A piston rod is arranged in the cylinder body shell, the outer surface of the cylinder body shell is fixedly connected with a limiting assembly, the cylinder body shell is fixedly connected with a heat conduction assembly through the limiting assembly, the outer surface of the heat conduction assembly is slidably connected with a cooling assembly, and the outer surface of the cooling assembly is fixedly connected with a connecting assembly. Through connection of the heat conduction assembly and the cooling assembly, heat generated by friction between the piston rod and the cylinder body shell is transmitted to the heat conduction assembly, the heat conduction assembly increases the contact area of the cylinder body shell and external air, and heat dissipation is facilitated; the cooling assembly can move along with the position of the piston on the piston rod, additional cooling and heat dissipation treatment is carried out on the friction position of the piston on the piston rod and the cylinder body shell, and thermal deformation of the cylinder body shell and the piston rod is avoided.

The invention discloses an electromagnetic disc brake with a gap automatic compensation function, and relates to the technical field of electromagnetic disc brakes, the electromagnetic disc brake comprises a mounting base and a connecting shell, one side of the mounting base is provided with a shell, an electromagnet is mounted in the mounting base, one side of the electromagnet is provided with an armature, and the armature is connected with the shell. One side of the armature is connected with multiple sets of reset springs, and one end of each reset spring is fixed to the inner side of the shell. According to the electromagnetic disc brake with the gap automatic compensation function, the gap between the armature and the electromagnet can be detected through the microswitch, and when the gap exceeds the range, the thin hydraulic cylinder can be started to drive the hydraulic plunger head to push the armature to move, so that the gap between the armature and the electromagnet returns to normal, and compensation is completed; the sealing mechanism can prevent external dust from making contact with the armature and other components, so that the braking effect is kept, and the heat dissipation mechanism can dissipate heat of the braked components.

The invention discloses a drilling device and method for hydraulic oil cylinder machining, and relates to the technical field of oil cylinder machining devices. The drilling device for hydraulic oil cylinder machining comprises a box body, two sets of mounting bases are fixedly mounted at the top of the box body, a driving mechanism used for cleaning an oil cylinder to be machined is fixedly mounted on one side of each mounting base, and a heat dissipation mechanism used for conducting heat dissipation on the oil cylinder to be machined is fixedly mounted on one side of the bottom in the box body. The constant-speed motor is powered on and operates to drive the fluted disc to rotate, the rotating fluted disc can drive the electric push rod to extend into the oil cylinder to be machined through the rack connected in an engaged mode, and then the micro electric cylinder is powered on and operates to drive the high-temperature-resistant scraper to abut against the inner wall of the oil cylinder to be machined; and then an electric push rod is electrified to operate to drive a high-temperature-resistant scraper to abut against the inner wall of the oil cylinder, so that impurities and scrap iron generated during drilling operation are pushed out of the inner wall of the oil cylinder, and the function of automatically collecting and cleaning the impurities and scrap iron generated during drilling operation of the oil cylinder is achieved.

The invention discloses a hydraulic oil cylinder with an axial supporting protection function, and belongs to the technical field of hydraulic cylinders, the hydraulic oil cylinder comprises an outer cylinder body, an oil cylinder rod and a first piston, a center oil cavity is formed in the outer cylinder body, the first piston is fixedly connected to the bottom of the oil cylinder rod, and the oil cylinder rod and the first piston are both slidably connected to the interior of the center oil cavity; a pressure buffering structure is connected into the outer cylinder body, when the oil cylinder rod bears pressure, the pressure buffering structure and the magnetic supporting structure are matched with each other to jointly share the pressure borne by the oil cylinder rod, a supporting rod in the magnetic supporting structure can transmit the pressure of the oil cylinder rod to a second piston, and therefore the oil cylinder rod is prevented from falling off. The second piston slides downwards in the storage cavity and extrudes the magnetorheological fluid, the stress of the oil cylinder rod is relieved through the buffering characteristic of the magnetorheological fluid, and therefore protection on the oil cylinder rod is effectively enhanced, and the stability and reliability of the hydraulic oil cylinder under the pressure effect are improved.