2976 results about "Hydraulic ram" patented technology

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.

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 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 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 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 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 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.

The hydraulic oil cylinder with the protection structure comprises a cylinder body, a piston rod is arranged in the cylinder body in a sliding mode, a connecting block is fixedly installed at the end of the piston rod, a machining assembly is arranged outside the cylinder body, and the machining assembly comprises a protection assembly arranged outside the cylinder body. When the oil cylinder is used and a piston rod of the oil cylinder stretches out and draws back, the outer wall of the oil cylinder needs to be protected, when the piston rod pushes a connecting block to move, the connecting block drives a top cover to move along with the connecting block, and the top cover drives a protection pipe to move along with the top cover through a first bolt set. The sliding groove formed in the inner wall of the protection pipe slides on the outer wall of the sliding block fixedly installed on the outer wall of the cylinder body, under limitation of the sliding block, the protection pipe can slide on the outer wall of the cylinder body in a limited mode, the protection pipe moves along with the piston rod, the piston rod is not exposed outside, and the piston rod is protected.

The invention discloses a hydraulic drive type piston compressor which comprises a hydraulic oil cylinder. The first air cylinder and the second air cylinder are oppositely arranged at the first end and the second end of the hydraulic oil cylinder, the first air cylinder and the second air cylinder are each provided with a buffer displacement sensor and a limit displacement sensor, and each limit displacement sensor is located between the hydraulic oil cylinder and the buffer displacement sensor arranged on the air cylinder where the limit displacement sensor is located; the processor is configured to control the moving speed of the piston to a target buffer speed under the condition that the piston moves towards the first air cylinder and a buffer displacement sensor arranged on the second air cylinder detects the end of the piston; and under the condition that the piston moves towards the first air cylinder and a limit displacement sensor arranged on the second air cylinder detects the end of the piston, the piston is adjusted to move reversely. According to the hydraulic drive type piston compressor, the risk that the piston collides with the cylinder can be reduced.

The handheld shaft sleeve press-fitting device comprises a hydraulic pump station, a hydraulic oil cylinder, an oil cylinder telescopic rod, a shaft sleeve extrusion assembly, a handle and a switch, the hydraulic oil cylinder is connected with the hydraulic pump station through a hydraulic pipeline, the oil cylinder telescopic rod is arranged in the hydraulic oil cylinder, and the shaft sleeve extrusion assembly is detachably arranged on the oil cylinder telescopic rod; the handle is installed on the hydraulic oil cylinder, the switch is arranged on one side of the handle, the shaft sleeve extrusion assembly comprises a first shaft sleeve seat, a second shaft sleeve seat and a fixing bolt, the first shaft sleeve seat is arranged on the oil cylinder telescopic rod in a sliding mode and abuts against a cylinder body of the hydraulic oil cylinder, and the second shaft sleeve seat is arranged at the top end of the oil cylinder telescopic rod in a sliding mode; the fixing bolt is fixedly connected with the oil cylinder telescopic rod, and the second shaft sleeve base abuts against the fixing bolt. The shaft sleeve press-fitting device is simple in overall structure, convenient to operate and compatible with press-fitting of shaft sleeves of various models, the assembly efficiency is effectively improved, meanwhile, stable press-in can be guaranteed, and the product percent of pass is increased.

The invention belongs to the technical field of engineering hydraulic oil cylinders, and particularly relates to a hydraulic oil cylinder with a filtering mechanism for reducing pollutant accumulation. An air inlet pipe is directly connected with an external cold air source, cold air can be directly diffused in a device box and wraps a hydraulic oil cylinder body, and meanwhile a motor drives fan blades to rotate through a third rotating shaft; according to the oil cylinder cooling device, flowing of cold air in the device box body can be accelerated, the heat dissipation effect of the oil cylinder can be enhanced, heat accumulation caused by local retention of the cold air can be avoided, meanwhile, suspended dust generated by cleaning of the cleaning brush, small impurities which are not settled in the cold air and falling objects in the using process of the cleaning brush can be sucked, and the cleaning effect is improved. And the cleaning rod rotates under the rotation of the third rotating shaft, so that the impurities blocked by the second filter screen are cleaned, and the impurities enter a first collecting box through a connecting pipe.

The utility model discloses a device for automatically assembling a piston rod and a piston of a hydraulic oil cylinder, and belongs to the technical field of hydraulic oil cylinder piston assembling. The device mainly comprises a clamping device used for clamping a piston, the clamping device is installed at the movable end of a first mechanical arm, and a gluing device is installed on the side wall of the clamping device; the positioning tool is fixedly provided with a piston rod, the tightening device comprises a tightening tool, a second driving device and a mounting assembly, an output shaft of the second driving device and the tightening tool are fixedly mounted, and the second driving device and the movable end of the second mechanical arm are fixedly mounted through the mounting assembly. The rapid assembly of the piston rod and the piston is achieved, the production efficiency is greatly improved, the assembly quality is improved, the high-precision visual system and the control system are applied, it is ensured that the assembly position is accurate, thread glue coating is even, torque control is accurate, the assembly quality is remarkably improved, and the labor cost is reduced.

The invention discloses a hydraulic folding type ditching and rotary tillage all-in-one machine which comprises a frame panel, a left side plate, a right side plate, a left arm rod, a right arm rod, a supporting plate, a gearbox, a rotary tillage mechanism, a ground breaking mechanism and a ridging mechanism. The rotary tillage mechanism comprises a rotary tillage part and a driving part, and the two ends of the rotary tillage part are rotationally installed on the left side plate and the right side plate; the driving part comprises a gear speed change mechanism and a chain transmission mechanism, the gear speed change mechanism is installed in the gearbox, and the chain transmission mechanism enables the output end of the gear speed change mechanism to be in transmission connection with the input end of the rotary tillage part; the ground breaking mechanism comprises a ground breaking support, a first hydraulic oil cylinder, an overturning part and a ground breaking part. The ridging mechanism comprises a ridging support, a ridging arm, a rear beam, a second hydraulic oil cylinder and a ridging part. According to the machine, soil breaking, rotary tillage and ditching are integrated, the functions are increased, and the working efficiency is improved.

The invention belongs to the technical field of manufacturing of equipment special for ceramic product production, and particularly relates to a ceramic product pressing device which comprises a rack, a first supporting frame and a second supporting frame are sequentially arranged on the rack, a powder box is fixedly installed on the first supporting frame, and a hydraulic oil cylinder used for driving a movable mold is fixedly installed on the second supporting frame. Two groups of transmission shafts are rotationally mounted in the rack, driving chain wheels are mounted at the two ends of the transmission shafts, the two groups of driving chain wheels are respectively meshed with two groups of chains, a plurality of groups of static molds are arranged around the two groups of chains, and a conveying belt mechanism is arranged below the plurality of groups of static molds and does circular motion along with the plurality of groups of static molds; powder in the powder box can automatically enter the pressing groove of the mold body, automatic feeding is achieved, the automation rate of the device is improved, the protruding blocks extrude the rollers, ceramic products in the pressing groove are automatically ejected out by the movable blocks, the protruding blocks replace power equipment to provide discharging power, and therefore the equipment cost input of the device is reduced.

The invention discloses a synchronous propelling and assembling shield tunneling machine and a synchronous propelling and assembling construction method. The synchronous propelling and assembling shield tunneling machine comprises a cutterhead, a main drive, a front shield, a middle shield, a shield tail, a man gate, a propelling oil cylinder, a thrust transmission device, a segment erector and an excavation face balancing device. The thrust transmission device is composed of a first force transmission ring, an assembling oil cylinder, a force bearing block and the like, and the segment erector is located at the thrust transmission device. The excavation face balancing device comprises a second hydraulic oil cylinder, a third force transmission column, a third hydraulic oil cylinder and a maintaining mechanism. The front end of the thrust transmission device is connected with a thrust oil cylinder, the rear end of the thrust transmission device is connected with the front end face of the assembled duct piece, and thrust is transmitted to the duct piece through the thrust transmission device and borne by friction force between the duct piece and synchronous slurry. And when the shield is propelled, the segment erector completes one-ring assembly. And after one ring is propelled and assembled, the excavation face balancing device is used for achieving connection of the whole ring of pipe pieces and forward movement of the thrust transmission device, propelling and assembling are continued, synchronous propelling and assembling of the shield are achieved, and the construction progress is accelerated.

The utility model relates to a hydraulic oil cylinder with a filtering structure. The hydraulic oil cylinder is provided with an oil cylinder body. An oil inlet pipeline communicated with the interior is fixedly arranged on the side wall of the oil cylinder body, and a filtering assembly is arranged at a pipeline opening of the oil inlet pipeline. The filtering assembly comprises a filtering body, an upper channel and a lower channel, a filtering through groove is formed in the middle of the filtering body in a penetrating mode, the upper end of the upper channel is fixedly connected with an oil outlet of an external hydraulic oil station, the lower end of the upper channel is fixedly arranged at the upper end of the filtering through groove, and the upper end of the lower channel is fixedly arranged at the lower end of the filtering through groove. The lower end of the lower channel is fixedly connected with a pipeline opening of the oil inlet pipeline; a plurality of placing grooves which are arranged close to the filtering through groove and extend in the extending direction of the filtering through groove are formed in the filtering main body, a magnetic attraction body used for adsorbing chippings in the hydraulic oil is arranged in each placing groove, and a filtering layer used for filtering the hydraulic oil is arranged in the filtering through groove; according to the utility model, hydraulic oil during pressurization can be cleaned, and the service life is prolonged.

The utility model discloses a hydraulic oil cylinder piston sealing experiment table, which is characterized by comprising a driving device, a test board, a hydraulic system and a data acquisition system, the test bench is provided with a test station for fixing a hydraulic oil cylinder to be tested; the driving device is located on the side edge of the testing station and comprises a sliding plate and a ball screw assembly driving the sliding plate to reciprocate in the telescopic direction of the hydraulic oil cylinder to be tested, and the sliding plate is provided with a connecting base for being connected with a piston rod of the hydraulic oil cylinder to be tested. The hydraulic system is communicated with an oil inlet and an oil outlet of the hydraulic oil cylinder to be tested through oil pipes; and the data acquisition system is connected with the hydraulic oil cylinder to be tested on the test station so as to acquire hydraulic information and oil leakage information. The device can efficiently and accurately measure the sealing performance of the hydraulic oil cylinder piston.

The invention relates to the technical field of hydraulic cylinders, and particularly discloses a double-seal adjustable hydraulic oil cylinder leakage-proof mechanism and a hydraulic oil cylinder thereof.The double-seal adjustable hydraulic oil cylinder leakage-proof mechanism comprises a cylinder barrel, a piston rod is slidably arranged in the cylinder barrel, a sleeve shell is arranged in the cylinder barrel, the outer surface wall of the piston rod is sleeved with the sleeve shell, and a first sealing ring is arranged in the sleeve shell; the outer surface wall of the piston rod is sleeved with the first sealing ring, multiple sets of adjusting screw rods are rotationally arranged at the upper end of the sleeve shell, the end, away from the sleeve shell, of each set of adjusting screw rod is in threaded connection with the cylinder barrel, multiple sets of sealing assemblies are arranged at the upper end of the cylinder barrel, and each set of sealing assemblies is matched with the corresponding adjusting screw rod; and a second sealing ring and a third sealing ring are embedded in the cylinder barrel. The maintenance difficulty is reduced, equipment does not need to be disassembled, slight leakage of hydraulic oil caused by long-time telescopic movement can be rapidly eliminated, the sealing performance of the hydraulic oil cylinder is improved, and meanwhile the maintenance cost is reduced.

The utility model relates to the technical field of hydraulic oil cylinder polishing, in particular to a hydraulic oil cylinder polishing machine for hydraulic equipment production. The hydraulic oil cylinder polishing machine comprises a polishing table, a guide rail is fixedly connected to the surface of the polishing table, a sliding block is slidably connected to the surface of the guide rail, and a movable seat is fixedly connected to the surface of the sliding block. A first motor is fixedly connected to the surface of the polishing table, a lead screw is fixedly connected to an output shaft of the first motor, a square nut is in threaded connection to the surface of the lead screw, a second motor is fixedly connected to the surface of the moving seat, and a rotating rod is fixedly connected to an output shaft of the second motor. According to the hydraulic oil cylinder polishing machine, the fixed base, the sealing base and the polishing head can be replaced, the inner surfaces of hydraulic oil cylinders of different specifications can be polished conveniently, time and labor are saved during operation of workers by optimizing the mode of replacing the fixed base, the sealing base and the polishing head, and the use efficiency of the polishing machine is greatly improved.

The invention discloses a deep foundation pit steel support lateral displacement adjusting system and method.The system comprises a supporting frame which comprises two transverse steel beams vertically arranged on a steel stand column located in a deep foundation pit at intervals and four vertical steel beams symmetrically arranged on the two sides of the steel stand column; the two transverse steel beams located on each side of the steel stand column and the two vertical steel beams form a frame used for being sleeved with a steel support. The lateral displacement self-adaptive adjusting mechanism comprises two vertically-distributed hydraulic oil cylinders which are located in each frame and symmetrically arranged in the middle of each transverse steel beam up and down, and two transversely-distributed hydraulic oil cylinders which are located in each frame and symmetrically arranged in the middle of each vertical steel beam left and right; the displacement monitoring sensors are arranged on the steel supports, and the hydraulic oil cylinders and the displacement monitoring sensors are connected with the hydraulic controller. The lateral displacement of the steel support can be adjusted and corrected, and the reliability and stability of the steel support are guaranteed.

The invention relates to the technical field of hydraulic oil cylinders, and discloses a full-stroke spiral swing oil cylinder capable of being self-locked at any position, which comprises a cylinder body, a rotating shaft is rotatably arranged in the middle of the cylinder body in a penetrating manner, a worm gear ring is rotatably connected to the right end of the rotating shaft in a sleeving manner, a clamping groove is formed in the inner wall of the worm gear ring, and a pressure sensor is arranged between the worm gear ring and the rotating shaft. An adjusting worm is arranged at the rear end of the worm gear ring, oil pipes are fixedly connected to the upper side and the lower side of the right end of the cylinder body, and contraction sections are arranged on the left sides of the oil pipes. When the oil cylinder operates, the pin column is automatically driven to be disengaged from the clamping groove according to the Bernoulli principle, the energy storage assembly is matched to drive the adjusting guide ring to assist in disengagement of the pin column, unlocking of the rotating shaft is safe, reliable and rapid, a pressure sensor is matched to adjust rotation of the worm gear ring, and the clamping groove is always opposite to the pin column; therefore, quick and stable self-locking at any position is achieved, pressure relief is not needed, and quick response can be achieved during secondary operation.

The hydraulic oil cylinder comprises an oil cylinder base, an oil cylinder sleeve, an oil cylinder end cover and a lubricating sleeve, the oil cylinder sleeve is detachably connected to the oil cylinder base, the lubricating sleeve is fixedly connected to one end of the oil cylinder sleeve, and the oil cylinder end cover is detachably connected to one end of the lubricating sleeve and forms a closed structure with the oil cylinder base and the oil cylinder sleeve. The hydraulic cylinder has the advantages that the first liquid inlet connector and the second liquid inlet connector are inflated alternately, so that the piston is pushed to move, displacement driving of the telescopic rod is achieved, the first liquid inlet connector can push the baffle to turn over when hydraulic oil is injected, the baffle pushes the first sliding plug to move, and when the first sliding plug moves towards the telescopic rod, airflow is inflated, and the telescopic rod is driven to move. The air flow pushes the second piston to move, lubricating oil in the supply pipe is injected into the lubricating sleeve through the outlet one-way valve, the telescopic rod is lubricated through the lubricating sleeve, and when injection of hydraulic oil is stopped, the spring pushes the first sliding plug to move towards the end away from the telescopic rod, and air is supplemented through the inlet one-way valve.