137 results about "Wear Problem" patented technology

The utility model relates to test fixture technical field, especially a solid state disk test fixture, including the bottom plate of horizontal setting, the top surface fixedly connected with frame of bottom plate, the top of frame is connected with the U type frame of sliding, the left and right sides of U type frame all are connected with two symmetrical settings locking bolt of rotation. The utility model's advantage lies in: this solid state disk test fixture drives the rotation of driving rod through motor, drives the cam to push the upward movement of lifting plate, makes the jackscrew steady and lifts the hard disk body. Spring provides the buffer force in the process of jacking, ensures that the separation process of hard disk body and test socket is even. This automatic ejection mechanism completely avoids the wear and tear problem of golden finger caused by uneven force when pulling out manually, and the accurate guidance of the jackscrew through the through hole makes the hard disk body keep vertical rising, protects the contact surface integrity of golden finger and test socket, and significantly improves the reliability and durability of test and plug.

The utility model discloses a winch device which is used for hoisting a water taking robot and comprises a hoisting frame, a pulley, a winch, a cross rod and two groups of hoisting rope components, the pulley is arranged on the hanging bracket and can rotate relative to the hanging bracket; a twisted rope of the winch bypasses the pulley, and the tail end of the twisted rope is connected with the cross rod; the two sets of lifting rope assemblies are symmetrically arranged on the two opposite sides of the cross rod and used for being detachably connected to the two opposite sides of the water taking robot. The two lifting rope assemblies located on the two sides of the transverse rod can avoid a shell of the water taking robot when drooping, and the problem of abrasion caused by direct contact between branch ropes and the edge of the robot in an existing lifting mode is solved.

The utility model discloses a kind of liquid chlorine filling anti-leakage intelligent connecting devices, including liquid chlorine storage tank, the top of the liquid chlorine storage tank is equipped with connecting pipe, fixed ring is sleeved on the connecting pipe, the connecting pipe is equipped with cover plate, locking mechanism is installed on the side of the cover plate, filling mechanism is installed on the cover plate, first locking sleeve is sleeved on the filling mechanism, second locking sleeve is installed in the first locking sleeve, the second locking sleeve is fixed with feed pipe. The utility model is through the buckle type design of locking mechanism and fixed ring, realize the even locking and quick disassembly of cover plate and connecting pipe, effectively avoid the uneven stress and wear problem of traditional sealing structure;Filling mechanism is matched with double locking sleeve and shut-off valve, forms multilayer sealing system, in combination with the sealing seat and sealing ring of rubber material, significantly improve the anti-leakage performance under high pressure.

This utility model discloses a locking device for a substation, including a base, a housing mounted on top of the base, and a door hinged to the front surface of the housing; a locking assembly, including an insert plate mounted on the front surface of the door, a threaded groove on the front surface of the insert plate, a stabilizing seat mounted on the top of the base and located on one side of the housing, a slot on the front surface of the stabilizing seat for the threaded groove to be inserted, a threaded hole on the rear surface of the stabilizing seat and communicating with the slot, and a threaded rod threadedly connected to the threaded hole, one end of which can be threadedly connected to the threaded groove; and a knob mounted on the other end of the threaded rod. The beneficial effects of this utility model are: through the designed locking assembly, the open door can be stabilized. Compared with the existing technology of positioning rod and positioning hole cooperation, it effectively avoids the friction and wear problem caused by frequent insertion and removal, improves the locking stability of the door, and ensures the safety of substation equipment maintenance and other operations.

The application discloses a one-way valve for a compressor assembly, and a compressor and a liquid accumulator, the compressor assembly comprising a compressor and a liquid accumulator, at least one of the compressor and the liquid accumulator being provided with the one-way valve, the one-way valve being adapted to allow one-way exhaust of the compressor and one-way suction of the liquid accumulator, the one-way valve comprising a valve housing assembly and a valve core assembly, the valve housing assembly comprising a valve seat and an inner housing, the valve core assembly comprising a valve core unit and an elastic element, wherein a part of the valve core and the inner housing in sliding fit is a valve core fit part, a part of the inner housing and the valve core in sliding fit is an inner housing fit part, at least one of the valve core fit part and the inner housing fit part is subjected to a hardening treatment to form a surface hardening layer on at least a corresponding fit surface. According to the one-way valve, the wear problem can be effectively improved, and the adverse effect of wear on the service life and performance of the one-way valve is improved.

The utility model discloses a uniform material distributing and distributing chute, belongs to the field of material distributing and transferring equipment, and particularly relates to a uniform material distributing and distributing chute. The material distributing device comprises an upper material distributing bin and a lower material distributing bin, the material distributing bin is composed of a feeding flange, a material distributing plate, a material accumulating plate, a door sill lining plate, an access door and a shell, and the material distributing bin is composed of a middle partition plate, a turning plate material distributing device, a lining plate, a shell and a discharging port. Two cross beams with long holes are arranged on the outer side of the upper portion of the shell, the material distributing plate is hoisted and fixed to the middle of the interior of the shell through high-strength bolts, the position of the material distributing plate can be adjusted within the range of the long holes of the cross beams, and materials can be divided into consistent throughput from the left side to the right side of the vertical face by adjusting the position of the material distributing plate. Through position adjustment of the material distribution plate, dynamic material distribution of the turning plate and a wear-resistant structure, the problems that the screening efficiency is low and the chute is easy to wear due to uneven left-right distribution of materials and particle layering are solved, and the device has the advantages of being high in wear resistance, large in flux and long in service life.

The invention discloses an inclined screw pump for conveying a viscous corrosive medium, and belongs to the field of conveying pumps. Comprising a pump body, a hopper, a feeding assembly, a pre-leading-in pipeline, a rotor and a stator, the feeding assembly is composed of an arch breaking unit, a propelling unit and a pre-pressing leading-in unit, the arch breaking unit breaks a hopper material arch, the propelling unit achieves stable feeding through a main spiral and a reverse auxiliary spiral, the pre-pressing leading-in unit guides materials into a pump body suction inlet, the rotor is a single-head spiral, and the stator is a stator. A screw pitch transition section is arranged between the inlet section and the outlet section, the outer surface is wear-resistant and corrosion-resistant, and the stator is of an eccentric spiral cavity structure and comprises a first stator metal framework ceramic lining and a second stator fluoropolymer lining. Through structural optimization of the feeding assembly, the rotor and the stator, low-shear, high-abrasion-resistance, high-corrosion-resistance and controllable-flow conveying is achieved, the problems that high-viscosity corrosive media are difficult to feed, shear damage is caused and a pump body is abraded are effectively solved, and the high-shear-resistance and high-corrosion-resistance pump is suitable for the precise coating and glue injection process of a new energy lithium ion battery production line.

This invention provides a pump assembly, a compressor, and an air conditioner. The pump assembly includes a crankshaft, rollers, and a cylinder. The rollers are fitted onto the outer circumferential wall of the crankshaft and are connected by threads. The rollers can reciprocate linearly along the axial direction of the crankshaft under the action of crankshaft rotation. The rollers are located inside the cylinder and divide the internal space of the cylinder into independent first and second cavities. The first and second cavities are arranged along the axial direction of the crankshaft. According to this invention, the counterweight is eliminated, eliminating the need for a counterweight to balance the force. The crankshaft has no eccentric circle, resulting in more balanced force on the compressor, reducing compressor vibration, and avoiding the vibration and component wear problems caused by eccentric rotation in the prior art. At the same time, the sliding vane structure in the prior art is eliminated, reducing moving parts, thereby reducing friction loss and refrigerant leakage, and improving the energy efficiency and reliability of the compressor.

The utility model relates to the technical field of surface grinding machines, in particular to a surface grinding machine for die steel finishing, which comprises a machine body, a workbench movably arranged at the upper end of the machine body, a vertical stand column fixedly mounted in the middle of the back of the machine body, a mounting seat movably arranged on the front of the stand column, and a grinding wheel mounted on the front of the mounting seat through a grinding motor. A baffle is arranged on the front face of the mounting base and located outside the polishing wheel. Scraping and sweeping mechanisms are arranged below the two sides of the baffle correspondingly. A filter box is fixedly installed outside the bottom end of the right side of the bed body, and a spraying mechanism is arranged between the filter box and the baffle. According to the utility model, the scraping plate is elastically matched with the spring for use, so that the surface of the polishing wheel and a workpiece polishing area are automatically and adaptively pressed by the scraping plate, the problems of vibration, noise and excessive abrasion generated by a traditional rigid scraping plate in a height difference transition area are effectively solved, the scraping stability is obviously improved, and the service life of the scraping plate is obviously prolonged.

The invention relates to the technical field of optical fiber rotary connectors, in particular to a micro multi-core optical fiber rotary connector rotary mechanism and an optical fiber rotary connector, and solves the problem of abnormal gear wear caused by axial movement of a transmission gear in the prior art. The rotating mechanism comprises a rotating body and a rotating body, the rotating body and the rotating body are in transmission connection through a transmission part, the transmission part comprises an annular positioning seat, two bearing seats are arranged on the inner side of the positioning seat, a compression spring is arranged between the two bearing seats, and transmission gears meshed with the rotating body and the rotating body are rotationally connected to the bearing seats. The positioning seat is in threaded connection with a positioning pin, and the end of the positioning pin extends into the inner side of the positioning seat to be matched with the bearing seat in an inserted mode. The transmission gear has the advantages that the inserting portion of the positioning pin is matched with the radial positioning hole of the bearing seat in an inserting mode, reliable locking of the axial position of the bearing seat is achieved, the defect that the transmission gear is prone to axial movement is fundamentally overcome, and the problem of abnormal abrasion caused by rigid abutting of the end face of the gear is avoided.

The invention belongs to the technical field of industrial furnace combustion, and particularly relates to a protective device of a multi-purpose furnace combustor, which comprises an ion generator, a guide spray pipe, a torque part and a scraping part, wherein the left end of the guide spray pipe is inserted into the axis of an inner cavity of the ion generator through an insertion port; the torque component sleeves the right side of the outer surface of the ion generator and drives the scraping component to rotate around the guide spray pipe; the torque member includes a guide base plate, a torque motor, and a guide outer rod. According to the device, the scraping part can be driven to the corresponding point position according to the position where coal cinder is attached to the outer surface of the guide spray pipe, then targeted scraping work is conducted, and therefore coal cinder cleaning work on the outer surface of the guide spray pipe is achieved; and the parts except the coal cinder cannot be rubbed and scraped, so that the whole outer part of the guide spray pipe cannot be seriously abraded, meanwhile, the scraping range of the conical surface scraping plate is narrowed, and the cleaning efficiency of the device is improved.

The utility model provides a wear-resistant nylon fishing net, which relates to the field of fishing nets and comprises a plurality of buckled fishing nets and a protective structure. The protective structure comprises two shells which can be combined or separated, one shell is provided with a containing space, and the containing space is used for buckling the frame sleeve after the two shells are combined. According to the utility model, the second shell and the first shell are combined, and the buckle knots are framed and sleeved, so that the problem of abrasion caused by frequent friction of the buckle knots during normal operation is solved.

The utility model discloses a machining center Z-axis tool setting gauge which comprises a fixed base, a guide groove is formed in the upper surface of the fixed base, a threaded lead screw is rotationally installed in the guide groove through a bearing, the threaded lead screw is a positive and negative threaded lead screw, and threaded seats are connected to positive and negative threads of the threaded lead screw in a threaded and sleeved mode. Clamping plates are fixedly mounted on the upper surfaces of the two threaded seats, two limiting insertion strips are fixedly mounted on the outer walls of the opposite sides of the two clamping plates, the two sets of limiting insertion strips are distributed in a mirror symmetry mode, a first-stage limiting hole is formed in the upper side of each limiting insertion strip, and a tool setting base is arranged between the two clamping plates; the tool setting base can be effectively subjected to plane limiting and fixing work on the front portion, the rear portion, the left portion and the right portion of the tool setting base, the good tenon-and-mortise type limiting and fixing effect is achieved, practicability is higher, mounting and dismounting are convenient and fast, and the problem of abrasion caused by direct assembling of traditional screws can be effectively solved by avoiding direct high-strength frequent dismounting of the screws.

This invention provides a wireless audio transceiver structure, including a main housing. One end of the main housing has a mounting port through which a plug is rotatably mounted. A connecting shaft is symmetrically arranged at one end of the plug. Through holes are provided on both sides of the mounting port for the connecting shaft to pass through. One end of the connecting shaft passes through the through holes and is rotatably connected to a fixing member. One end of the fixing member is fixedly connected to the main housing by a fastener. This invention uses a metal fixing member to bear the rotational force of the connecting shaft, forming a rotating pair between the metal shaft and the metal fixing member. This avoids the wear problem caused by direct friction between the metal shaft and the plastic housing, fundamentally solving the connection loosening and failure caused by plastic wear, and significantly extending the service life of the plug rotation mechanism. It is especially suitable for applications requiring frequent plugging and unplugging.

The utility model discloses a long-service-life shaft end, and relates to the technical field of shaft connection. The shaft end comprises a shaft end body, a sleeve and a reinforcing ring, a step face is arranged on the shaft end body, the sleeve is sleeved on the shaft end body and is in contact with the step face, an outer key groove is arranged on the inner wall of the sleeve, an inner key groove matched with the outer key groove is arranged on the peripheral side face of the shaft end body, a key strip is arranged between the outer key groove and the inner key groove, and a plurality of screw openings are arranged at one end of the sleeve far away from the step face. An annular opening is formed in the circumferential side face of the shaft end body. According to the utility model, the original oil seal mounting position on the shaft end body is removed by turning, the inner key slot and the annular opening are turned, the design of the sleeve and the reinforcing ring is matched, and the sleeve replaces the original oil seal mounting position and is used for being in contact with the framework oil seal, so that after the abrasion problem occurs, the maintenance and overhaul can be carried out by replacing the sleeve, and the service life of the shaft end is prolonged. The situation that the whole shaft needs to be replaced is avoided, maintenance cost is reduced, and therefore the service life of the shaft and the shaft end is prolonged.

The invention relates to a design method of a diamond-like carbon wear-resistant coating for a zirconium alloy component of a nuclear reactor, which comprises the following steps: establishing a fretting wear prediction model of the zirconium alloy component in a nuclear reactor environment, and calibrating the model based on experimental data to simulate flow-induced vibration and contact stress distribution; the performance parameters of the diamond-like carbon coating are designed through an optimization algorithm by utilizing model output and combining friction coefficient and wear rate data; based on the design parameters, simulating and optimizing the coating preparation process through a process simulation model, so that the coating is firmly combined with the substrate; and finally, verifying the long-term wear performance of the coating through experiments to finish design verification. Compared with the prior art, through the systematic design process, the fretting wear resistance of the coating is remarkably improved, the problem that zirconium alloy parts are worn due to flow-induced vibration is effectively solved, the service life of the parts is prolonged, and the operation safety of a nuclear reactor is guaranteed.

The application belongs to the technical field of fin stabilizer system, and particularly relates to a passive locking mechanism for a fin stabilizer system and a control method thereof, which comprises a locking pin, a cylinder body, a spring, a cylinder piston rod and a locking mechanism shell, the shell is installed on an actuator, coaxial mounting holes are arranged at two ends of the shell, the cylinder body is arranged axially along the mounting hole, the spring is sleeved at one end of the cylinder body, the other end of the cylinder body is connected with the locking pin, the spring is abutted against a cylinder body step and an inner end surface of the shell at two ends, the piston rod is fixed in the shell, one end of the piston rod is a piston head and is located in the cylinder body, the other end of the piston rod is installed in the mounting hole, a sealing structure is arranged between the piston rod and the cylinder body and an oil cavity is formed, the piston rod is provided with an oil channel, one end of the oil channel is connected with a hydraulic system, and the other end of the oil channel is in communication with the oil cavity, when hydraulic oil is input, the cylinder body is pushed to overcome the spring force to make the locking pin be pulled out of a fin handle insertion slot, and when pressure is released, the spring is reset to push the locking pin to be inserted into the insertion slot. The application realizes automatic unlocking and passive self-locking, and solves the problems of low efficiency, great safety hazards and easy wear of a contact part of manual insertion.

The utility model discloses a hydraulic movable mold plate of an injection molding machine, the movable mold plate is provided with at least one mold locking oil cylinder, a piston fixedly connected with the end part of a push rod is arranged in the mold locking oil cylinder, and one side, far away from the push rod, of the piston and the bottom and the side wall of the mold locking oil cylinder form a first hydraulic space; and the first hydraulic space is connected with the hydraulic integrated valve group through an in-plate pipeline. Working oil flows through the in-plate pipeline of the movable mold plate, the design of an oil way in the whole plate is adopted, and mold locking force is provided through the push rod and the mold locking oil cylinder, so that a whole toggle rod mold locking component in a traditional scheme is eliminated between the movable mold plate and the tail plate, and meanwhile, the push rod can be lengthened or shortened according to actual conditions, so that the mold locking force is greatly improved. The stroke between the movable mold plate and the tail plate is changed, and the problems that the stroke of a toggle rod of a traditional injection molding machine is limited and mechanical stress is abraded are solved.

This utility model provides a slider demolding mold for thin-walled products, relating to the field of mold technology. It includes: a base; an L-shaped mounting arm fixed to the top surface of the base, with two hydraulic cylinders fixed on the mounting arm. The extended ends of the two hydraulic cylinders are fixed to a sealing cover. The sealing cover is provided with an injection pipe for injecting molding liquid. Two sliding seats are fixed in a mirror shape on the sealing cover, each with a sliding drive block. An adjusting rod rotates on the two sliding seats. The mold closing assembly of this application is ingeniously designed. The threads at the left and right ends of the adjusting rod are reversed, allowing the two drive blocks to adjust synchronously inward during rotation. This quickly addresses wear issues at the contact point between the drive blocks and the slider mold seat, ensuring precise mold closing. The locking screw locks the adjusting rod by pressing against the drive block, effectively preventing the adjusting rod from loosening and preventing gaps in the slider mold seat, thereby reducing burrs caused by gaps and improving product quality.

The utility model belongs to the field of anti -fall device, specifically is a kind of anti -impact buffer anti -fall device, including anti -fall device body;The anti -fall device body bottom is provided with square groove, square groove surface is fixedly connected cover, cover surface is equipped with rope hole, the both sides edge of rope hole is movably connected with connecting plate, the surface edge of connecting plate is movably connected with fixed plate, the both sides of fixed plate are fixedly connected with fixed sheet, the inside of fixed sheet is provided with bearing, the inside of bearing is provided with connecting column, connecting column one end is connected with limit wheel through bearing;Through the collaborative design of limit wheel and groove, the friction buffer function when safety rope swing is realized, safety rope is embedded in groove, limit wheel is freely rotated to reduce rope body friction through bearing, the movable connection of connecting plate and fixed plate allows overall small swing, limit wheel rotation guide and movable connecting plate swing buffer, solve the excessive wear problem caused by rope left and right swing, improve the smoothness of retraction and rope life.

The utility model discloses a grooving cutter with a vibration reduction cutter bar, and relates to the technical field of grooving cutters. The tool bar comprises a tool bar sleeve, one side of the tool bar sleeve is fixedly connected with an end head, and one side of the end head is provided with a tool; a vibration reduction assembly is arranged in an inner cavity of the cutter bar sleeve and comprises a damper fixedly connected to the inner cavity of the cutter bar sleeve. Through the design of the vibration reduction assembly, the vibration resistance of the grooving cutter is effectively improved, the service life of the grooving cutter is effectively prolonged, cutting vibration energy can be efficiently absorbed through the combination of the damper and the vibration reduction plate, vibration is converted into multi-directional movement through the sliding rod, the sliding sleeve and the connecting rod mechanism, and intelligent rigidity adjustment of the memory alloy tension spring is matched. Compared with a traditional vibration reduction material, the mechanical vibration reduction structure has the advantages that the problem of consumable abrasion is solved, excellent vibration reduction performance can still be maintained after long-term use, the roughness of a machined surface can be effectively reduced, and the service life of a cutter can be prolonged.

This invention relates to the field of centrifugal clutch technology and discloses an automatic transmission centrifugal clutch, including a driven hub, a mounting block, and a centrifugal block rotatably mounted on the mounting block. An annular friction block is installed inside the driven hub. In order to effectively avoid the wear problem of the driven hub caused by direct contact friction between the centrifugal block and the inner wall of the driven hub, and to realize convenient replacement of worn parts without disassembling the main components of the transmission system, this invention provides a detachable annular friction block on the inner wall of the driven hub. The annular friction block serves as an intermediate friction layer between the centrifugal block and the driven hub. During engagement, the centrifugal block directly contacts and rubs against the annular friction block, thereby concentrating the wear on the surface of the annular friction block and avoiding wear on the inner wall of the driven hub body. When the centrifugal block is worn and needs to be replaced, the annular friction block can be replaced simultaneously, realizing complete maintenance of worn parts.

The utility model relates to the technical field of sulfuric acid pumps, in particular to an improved cooling and flushing lower bearing of a submerged sulfuric acid pump, which adopts an annular flushing groove without a balance hole design, and utilizes the principle of fluid dynamics to promote pressure difference to be formed at two ends of the flushing groove so as to drive medium fluid to flow directionally. The lower bearing is provided with a spiral flow guide type water retaining ring which is obliquely distributed at an angle of 45 degrees along the periphery of the bearing to effectively restrain the motion trail of flushing water flow, a balance hole is omitted, a lower bearing flushing groove is redesigned, liquid flows through the lower bearing to achieve flushing and cooling, and the problem of abrasion is solved. The new design change is small, the cost is not increased, the size of the auxiliary sealing ring is not changed, the pressure of the balance chamber is increased, leakage is reduced, the volume efficiency is improved, and the pump efficiency is improved by 0.5%-1%. The scheme prolongs the service life of the lower bearing and reduces the maintenance and overhaul period of the pump body.

The utility model relates to the technical field of flue gas pipeline production and processing, disclose a kind of flue gas pipeline bending forming machine, including mesa, the lower surface of the mesa is fixedly connected with motor one, the output end of the motor one is rotationally connected in the inside of mesa and is fixedly connected with rotating disc, the outer wall of the rotating disc is rotationally connected in the inside of mesa, the top of the rotating disc is rotationally connected with main bending roller, the top of the rotating disc is rotationally connected with auxiliary bending roller, the upper surface of the mesa is fixedly connected with U-shaped frame one, the upper surface of the mesa is provided with cleaning assembly.In the utility model, the reciprocating movement of connecting frame drives the reciprocating movement of cleaning block, the reciprocating movement of cleaning block cleans the sidewall of pipeline, achieves the effect of cleaning the sidewall of pipeline, can reduce the scratch and wear problem caused by impurities during bending process, and ensures the quality of flue gas pipeline bending forming.

The invention discloses a synchronous steering control method of a walking excavator based on force distribution optimization, which is used for solving the problems of poor synchronism and tire wear caused by non-uniform force distribution in the steering process. The method comprises the following steps: S1, establishing a complete machine kinematics model and a dynamical model; s2, estimating the joint speed and the joint external force by adopting a strong tracking Kalman filtering algorithm; s3, minimizing the weighted sum of the supporting force of each supporting leg as a target function, solving the optimal expected joint torque through optimization based on mechanical balance constraint and joint force constraint, and calculating the current magnitude of a pitching joint based on a force controller; s4, acquiring an expected angle of the swinging support leg according to the synchronous steering track plan, and calculating the magnitude of current of the swinging support leg based on a feed-forward compensation PID algorithm; and S5, force distribution adjusting current is applied to the pitching joint of the supporting leg, and steering adjusting current is applied to the swinging supporting leg. According to the method, the steering synchronization performance of the walking excavator can be remarkably improved, and tire abrasion is relieved.

The utility model relates to profile cutting technical field especially relates to a profile cutting machine, the profile cutting machine includes: work board, guide block, reset component, baffle, adjusting assembly, clamping assembly, the top one side fixed connection of work board has the assembly plate, the top remote both sides symmetrical fixed connection of assembly plate has the support plate, the inside fixed connection of the similar one side of two support plates has the rotating rod, the outside rotation of rotating rod is connected with the bearing plate, the right rear side fixed connection of bearing plate has the connecting rod, the inside rotation of connecting rod one side is connected with transmission rod, the top fixed connection of bearing plate has the motor, the drive end fixed connection of motor has the driving wheel, the utility model can adjust the baffle position fastly, determines the cutting length size, has improved work efficiency greatly, has reduced the time and the energy consumption of adjustment, and avoided the thread wear problem caused by the frequent dismounting and the installation bolt nut, has improved the stability of equipment whole.

The invention discloses a self-release controllable lifting gas spring, and relates to the technical field of gas springs, the self-release controllable lifting gas spring comprises a main rod, the top of the main rod is slidably connected with a piston rod, the top of the piston rod is provided with a valve rod, the outer part of the top of the main rod is provided with an anti-corrosion mechanism and a cleaning mechanism, and the anti-corrosion mechanism comprises a first lantern ring; and an oil cavity is formed in the first lantern ring, a sponge block is arranged in the first lantern ring, the inner wall of the sponge block is slidably connected with the outer wall of the piston rod, and a rotating ring is rotatably connected to the middle of the first lantern ring. According to the self-release controllable lifting gas spring, through cooperative work of the cleaning mechanism and the anti-corrosion mechanism, impurities on the surface of the piston rod are removed through graded cleaning, then matched lubricating media are continuously supplemented through a sponge block to form a stable protective oil film, oil film failure and impurity damage are effectively avoided, and the service life of the gas spring is prolonged. The problem of corrosion and abrasion of the piston rod is fundamentally solved, and long-term reliable operation of the gas spring is guaranteed.

The invention relates to the technical field of mechanical sliding structures, and discloses a three-shaft anti-rotation rolling type linear motion pair which comprises three guide shafts, the three guide shafts penetrate through a cabin in parallel, a roller seat is fixedly installed at the end of the cabin, a roller is installed in the roller seat in a limited mode and tightly attached to the guide shafts, and gaps exist between the guide shafts and the cabin. Through innovative multi-guide-shaft layout and roller configuration, the contradiction between the bearing capacity and the service life of a traditional linear motion pair is broken through, the design of the three guide shafts evenly distributed on the circumference and the end face outer frame type roller seats is adopted, the four rollers evenly distributed on the circumference in each group are matched, and a three-point positioning and multi-line contact composite supporting structure is formed; jumping of the bearing capacity is achieved based on space geometry optimization, and the problem of unbalance loading abrasion of rollers caused by a cantilever structure is effectively solved based on rigid supporting of the frame type roller seats.