488 results about "Friction reducing" patented technology

The invention relates to the technical field of ultrasonic cutting, in particular to a sawtooth-shaped circular knife ultrasonic cutting acoustic system which comprises a main shaft, an ultrasonic vibrator and an ultrasonic cutting tool, the ultrasonic vibrator is connected with the main shaft, the ultrasonic cutting tool is installed on the side, away from the main shaft, of the ultrasonic vibrator, and a plurality of sawtooth grooves are formed in the peripheral face of the ultrasonic cutting tool. The sawtooth grooves are annularly distributed at equal intervals, and sawteeth are formed between every two adjacent sawtooth grooves. According to the ultrasonic cutting tool, the sawtooth grooves are formed in the peripheral surface of the ultrasonic cutting tool, so that the machining mode of the workpiece is intermittent cutting, the contact time of the ultrasonic cutting tool and the workpiece is shortened, and then friction resistance generated by contact between the ultrasonic cutting tool and the workpiece is reduced; heat generated between an ultrasonic cutting tool and a workpiece in the workpiece machining process can be greatly reduced, heat is released through non-contact gaps, and cutting force is reduced by reducing friction resistance.

The invention discloses a sealing surface two-stage adjusting sealing device. The lower support is placed on the upper edge of the circular base, and the lower support and the circular base are connected and fixed through a fastening screw and are sealed through a sealing ring. The upper portion of the lower support and the top cover are fixed through fastening screws, and the lower support and the top cover are sealed through a sealing ring. A lower sealing gasket and an upper sealing gasket are fixed to the surfaces of the inner sides of the lower support and the top cover, and the lower support and the sealing gaskets are provided with evenly-distributed groove sliding grooves. A split type large sealing ring support is placed above the lower sealing gasket, protruding sliding rails are evenly distributed on the outer side of the split type large sealing ring support, and the sliding rails correspond to the grooves. The upper portion of the split type large sealing ring support and the split type large sealing ring upper cover are positioned through a positioning pin (the support corresponds to the upper cover in a one-to-one mode). And the upper cover and the top cover of the split type large sealing ring are sealed through an upper sealing gasket. The sealing effect is guaranteed, frictional wear can be reduced, and the service life is prolonged.

The invention relates to a sealing device and a bearing. The invention provides a sealing device, which is used for performing dynamic sealing between a first rotating part and a second rotating part which can relatively rotate around a rotating axis, and comprises a framework, a sealing part and a sealing part, and is characterized in that the framework is used for being fixed on the first rotating part; the sealing ring is fixed to the framework and comprises an axial sealing lip and a radial sealing lip; the antifriction patch is of an integral annular structure and comprises an axial patch part connected to the axial sealing lip and a radial patch part connected to the radial sealing lip, when the sealing device is installed between the first rotating component and the second rotating component, the axial patch part is used for making sealing contact with the second rotating component in the axial direction, and the radial patch part is used for making sealing contact with the first rotating component in the radial direction. The radial patch part is used for being in sealing contact with the second rotating component in the radial direction, and the friction coefficient of the friction reducing patch is smaller than that of the sealing ring.

The invention belongs to the technical field of coating manufacturing equipment, and particularly relates to a uniform stirring device for coating manufacturing, the uniform stirring device comprises a stirring bin, a driving mechanism, a linkage assembly, a stirring mechanism and a wall scraping assembly, the driving mechanism drives the linkage assembly to rotate, the stirring mechanism realizes combination of autorotation and revolution in the stirring bin, so that the coating is fully mixed, and the stirring efficiency is improved. The problem of stirring dead angles of a traditional stirring device is solved; according to the wall scraping assembly, the attaching state of a scraping plate and the inner wall of the stirring bin is adjusted through a hydraulic rod, when the rotating speed is high, the scraping plate is separated from the inner wall, friction and equipment abrasion are reduced, when the rotating speed is reduced, the scraping plate is attached to the inner wall, cleaning of the inner wall is achieved, coating residues are reduced, and stirring uniformity and production efficiency are improved.

A friction nanometer generator disclosed by the present invention comprises a collection unit, a conversion unit and an output unit, the collection unit comprises an input shaft and a base, the conversion unit comprises a roller and a fixed cylinder, the outer wall surface of the roller and the inner wall surface of the fixed cylinder are both provided with friction materials, and the polarities of the friction materials of the roller and the fixed cylinder are opposite; the output unit comprises an energy storage electrode layer and an output electrode layer. The input shaft drives the roller to rotate, the roller and the inner wall of the fixed cylinder rub and roll, and friction materials of the roller and the fixed cylinder have opposite polarities and rub to generate electric energy; the generated electric energy is injected into the energy storage electrode layer, the energy storage electrode layer transmits energy to the output electrode layer through electrostatic induction, and the output electrode layer generates current output. Friction resistance and material abrasion are reduced in a rolling contact mode, the energy storage electrode layer and the output electrode layer of the output unit are of a non-contact structure, a large number of charges are generated due to electrostatic induction, an efficient electric energy output system is formed, and the charge density and the output performance of the friction nanometer generator are effectively improved.

A cover for a support surface includes: a ticking made of a ticking material configured to enclose a support layer of the support surface, the ticking having an outer top surface configured to face a person lying on the support surface; and a friction reducing overlay on at least a portion of the outer top surface for facilitating displacement of the person on the support surface, the friction reducing overlay being made of a low friction material formed onto the ticking material, the friction reducing overlay comprising a plurality of overlay elements that are spaced apart from each other to form an overlay pattern.

A bracket includes a main body, an elastic positioning and locking plate, a load-bearing part, and multiple reinforcement ribs. The front and rear sides of the main body are provided with a first hook and a second hook respectively. The first hook is provided with an operating hole, the elastic positioning and locking plate is connected to the operating hole and protruded with a locking part to form a locking, and provided with an operating part corresponding to the operating hole for a release purpose. The load-bearing part is integrally formed and bent from a lower edge of the main body to support a server chassis, and each reinforcement rib is integrally formed on the load-bearing part and the main body to reduce frictional resistance.

The invention provides an air spring upper supporting structure, an air spring and a vehicle, and belongs to the technical field of suspension systems. The scheme that the top rubber, the blocking cover and the check ring are arranged on the upper supporting body is achieved through the arrangement of the installation groove, the reliability of matching with the piston rod can be guaranteed, and the compactness of the upper supporting structure of the air spring can be improved. The threaded sleeve is arranged in the mounting hole, so that structural damage to the area where the mounting hole is located can be effectively avoided, and the service life of the upper supporting structure of the air spring is prolonged. By arranging the heat insulation pad, the problem that the whole air spring is seriously heated due to the fact that the upper supporting body absorbs excessive heat is solved, and the service life of a rubber part in the air spring is shortened. The arc-shaped flow guide faces are arranged at the corners of the first air channel and the second air channel, so that vortexes are avoided, friction is reduced, and the problem of abnormal sound generated by air flowing is solved. Double connection of the threads and the positioning pins is adopted between the mounting hole and the threaded sleeve, so that the anti-loosening strength and the torsional strength of the threaded sleeve are enhanced, and the threaded sleeve is prevented from loosening.

A carriage slider and rail assembly is disclosed. The assembly may include a linear rail including one or more surfaces that define a channel. The assembly may include a carriage slider sub-assembly. The sub-assembly may include a slider configured to be axially displaceable within the channel of the linear rail. The sub-assembly may include one or more overload protection lobes including a first overload protection lobe positioned adjacent to a first end of the slider and a second overload protection lobe positioned adjacent to a second end of the slider. The sub-assembly may include one or more friction reducing portions. The overload protection lobes may make contact with the channel of the linear rail when an abuse load is applied to provide overload protection. The overload protection lobes may be configured to not make contact with the channel of the linear rail when an abuse load is not applied.

The invention discloses a compressor blade with a venturi tube micro-channel cooling structure, which realizes uniform distribution of cooling air and forms a stable air film cooling layer on the surface of the blade by arranging arc-shaped fine channels and fine pores on the tip of the blade and combining the series design of adjacent channels, thereby obviously improving the cooling effect. The inner wall of the channel is of a sharkskin microcosmic placoid scale structure, friction resistance is reduced, the airflow turbulence characteristic is enhanced, and therefore the heat exchange performance is optimized. The grooves penetrating through the surface of the blade prolong the service life of the blade by changing the flowing path of the air flow and destroying the formation of a liquid film cooling layer, and enhance the cooling effect and the contact between the air flow and the surface of the blade through linkage with the small channels, thereby further improving the heat exchange performance. And the micropores of the damping boss not only provide a damping effect, but also can effectively release cooling air, so that the combination of cooling and structural stability is improved. While the cooling effect is optimized, the working efficiency of the blade is remarkably improved, and the service life of the blade is remarkably prolonged.

The invention provides a copper-nickel alloy friction film based wind power gear oil additive composition and a preparation method thereof, belongs to the technical field of lubricating oil, and aims to solve the technical problems of low bearing capacity and poor antifriction effect of a friction film formed by wind power gear oil. The wind power gear lubricating oil comprises the following components in percentage by mass: 0.8%-1.4% of a sulfur-containing extreme pressure agent, 0.4%-1.0% of a phosphorus-containing anti-wear agent, 0.5%-1.5% of copper nanoparticles, 0.5%-1.0% of nickel acetylacetonate, 0.15%-0.25% of an antioxidant, 0.1%-0.20% of an anti-rust agent, 0.015%-0.025% of an anti-foaming agent, 0.04%-0.05% of a demulsifying agent, 0.4%-0.8% of a dispersing agent and 93.8%-97.1% of synthetic base oil, and the sum of the percentages of the components is 100%. Nickel acetylacetonate forms high-activity nickel ions under friction induction, the high-activity nickel ions react with a friction pair substrate to form an alloy interface layer, and meanwhile the alloy interface layer and copper nanoparticles form a high-strength copper-nickel alloy friction film through interface alloy.

The present invention provides an adaptive radial-thrust integrated bearing suitable for high-speed and heavy-load conditions, comprising a bearing body, a thrust fixed pad and a radial tilting pad, wherein the bearing body comprises a radial part and a thrust part; the thrust fixed pad is fixedly installed at one end of the thrust part along the circumferential direction, and the radial tilting pad is arranged inside the radial part along the circumferential direction; a cavity structure is arranged on one side of the thrust fixed pad for forming a friction pair, for forming an oil film, and the radial tilting pad comprises a load-bearing radial tilting pad and an unload-bearing radial tilting pad, and micro-textures are distributed on the load-bearing radial tilting pad. The radial part pad of the present invention is provided with micro-textures at the load-bearing part, which can effectively reduce the contact area between the friction pairs, thereby reducing contact deformation and local pressure concentration, and further reducing the friction coefficient; the thrust part pad is provided with a cavity structure, which can greatly reduce the lubricating oil temperature between the friction pairs, ensure the fluid viscosity, and greatly improve the axial load-bearing capacity and anti-eccentric load performance of the bearing.

The utility model discloses a test device for simulating soil deformation caused by vertical pipe-jacking construction. The test device comprises a model box, a vertical pipe-jacking device and a vertical pipe-jacking device, a horizontal tunnel assembly is mounted in the model box; a vertical pipe jacking assembly is mounted above the horizontal tunnel assembly; the vertical pipe jacking assembly comprises an outer pipe, a middle pipe and an inner pipe which are sequentially arranged from outside to inside. A first cross-shaped steel frame is arranged at the top of the middle pipe; a second cross-shaped steel frame is arranged at the bottom of the inner pipe, and the inner pipe is connected with the outer pipe through the second cross-shaped steel frame; the testing device further comprises a base support. A drawing device is installed through a base support, a steel claw is arranged at the lower end of the drawing device, and the drawing device is connected with the first cross-shaped steel frame through the steel claw, so that the steel claw and the middle pipe are driven to vertically move. According to the utility model, the influence of friction force on the soil body is reduced by only extracting the middle pipe, the test data and the loss rate of the soil body are more accurately measured, and the accuracy of a test result is improved.

The utility model discloses high-pressure spraying equipment for dust treatment, which comprises a dust treatment high-pressure spraying equipment main body, a spray head height adjusting assembly is arranged in the dust treatment high-pressure spraying equipment main body, and the spray head height adjusting assembly comprises a lifting plate and a threaded rod main body. Lubricating discs are arranged on the upper portion and the lower portion of the lifting plate respectively, lubricating agents are smeared on the contact portions of the lubricating discs, the lubricating agents can form a layer of protective film on the surface, and therefore the lubricating effect is improved. And dry friction between contact parts is converted into internal friction between lubricant molecules, so that the friction force is reduced, the phenomena of abrasion and blockage are effectively avoided, and the service life of equipment is prolonged.

The present invention discloses a push piece for a magnetic latching relay, which includes a push piece body. A swing rod protrusion and two spring piece protrusions are arranged on the top edge of the push piece. A swing rod card slot with an open top surface and an open side surface is arranged inside the swing rod protrusion. A spring piece card slot with an open top surface and an open side surface is arranged inside the spring piece protrusion. Three grooves with open bottom surfaces are arranged on the bottom surface of the push piece body. An n-shaped limit slot is fixed at the bottom of the push piece body. A process groove is arranged inside the push piece body, and the opening of the process groove is arranged on the top surface and / or the bottom surface of the push piece body. At least one reinforcing rib is arranged inside the process groove. The structure of the present invention is reasonably arranged, which is beneficial to ensuring uniform cooling, ensuring that the thicknesses of both sides of the push piece are the same, and can also make the side surface flatter, which is beneficial to reducing friction during use. In addition, at least one reinforcing rib is added, which is beneficial to ensuring the overall mechanical strength. It has strong applicability and good practicability.

The invention relates to a steel profile. The invention is characterized in that a small convex narrow surface is arranged on the base body or the boss. Contact area can be reduced, friction force is reduced, and mechanical efficiency is improved.

The present invention discloses an SMA wire-driven reusable release mechanism having a self-resetting function. The present invention adopts a structure of two-stage load reduction and one-stage release. First-stage load reduction: a compression rod and a hoop petal, as well as an inclined block and a shell or a sliding block, all cooperate with each other by means of inclined surfaces, which can transfer most of tension load of the compression rod to the shell, leaving only a small part of the load transmitted to a thrust bearing. Second-state load reduction: balls in the thrust bearing are coated with a molybdenum disulfide lubricating coating, which can effectively reduce friction so as to reduce a torque transmitted to a driving shaft. First-stage release: the driving shaft drives a thrust bearing to rotate by a certain angle, causing an upper ring of the thrust bearing to descend to release a certain axial clearance.

The utility model relates to a high-precision smooth edge grinding machine and belongs to the field of lens grinding, the high-precision smooth edge grinding machine comprises a rack, a grinding mechanism is arranged on the upper surface of the rack, a clamping mechanism is arranged on the upper surface of the rack and located in front of the grinding mechanism, and the grinding mechanism comprises a supporting frame, a connecting frame, a rotating shaft and a smooth surface grinding disc. According to the high-precision smooth edge grinding machine, the grinding mechanism adopts a polyurethane resin grinding wheel as a smooth surface grinding disc, the polyurethane resin grinding wheel has excellent self-lubricity and wear resistance, friction and heat are reduced in the grinding process, damage to a lens is effectively avoided, burrs are changed into polishing through edge grinding, meanwhile, through combined driving of a grinding motor and a transmission belt, the grinding efficiency is improved, and the grinding efficiency is improved. According to the optical lens edge grinding device, high-speed rotation of the grinding disc is ensured, the edge grinding efficiency is improved, the cooling effect in the grinding process is further enhanced through the arrangement of a cooling water pipe and a spraying head, lens damage or deformation caused by too high temperature is prevented, the optical lens edge grinding quality is greatly improved, and the requirement for high-precision machining is met.

The invention relates to the field of cable construction equipment, in particular to a modularized crossing frame for power transmission line multi-scene maintenance construction, which comprises a support frame, a base, a sliding block, a sleeve, a driving mechanism and an expansion mechanism, the base is slidably arranged on the supporting frame, and the sliding block is rotationally arranged on the base. The sleeve is rotationally arranged on the sliding block and can slide in the direction perpendicular to the power transmission line, the diameter of the middle of the sleeve is smaller than that of the end of the sleeve, and the sleeve is elastic in the radial direction and makes contact with the power transmission line; the driving mechanism controls the base to slide so that the power transmission line can be located in the middle of the sleeve, the power transmission line can drive the slider to rotate under external force, and the expansion mechanism changes the diameter of the end of the sleeve when the slider rotates. The driving mechanism adjusts the position of the sleeve, prevents the power transmission line from sliding relative to the sleeve through the sleeve structure, and guarantees the stability. The expansion mechanism increases the bending radian and wrapping performance by changing the diameter of the end part of the sleeve, thereby further preventing the power transmission line from sliding, reducing frictional wear, and prolonging the service life.

The invention discloses an anti-abrasion track of an automobile skylight, and belongs to the field of automobile skylight tracks, the anti-abrasion track comprises a track body, and a sliding block is installed in an inner cavity of the track body in a sliding mode; the device further comprises a crossing assembly, the crossing assembly comprises movable cavities evenly formed in the bottom of the sliding block, fixing frames are installed in inner cavities of all the movable cavities in a sealed and sliding mode, rolling shafts are rotatably installed on the two side walls of inner cavities of all the fixing frames, and rolling wheels are fixedly installed between every two adjacent rolling shafts. Each group of rollers are in contact with the bottom wall of the inner cavity of the track body; according to the skylight opening and closing device, original sliding friction can be changed into rolling friction, friction force can be remarkably reduced, the service life of the skylight opening and closing device can be prolonged, meanwhile, the roller can automatically move upwards to cross foreign matter, the situation that friction is generated between an original sliding block and the foreign matter, and the sliding block is clamped and damaged is avoided, and the opening and closing smoothness of a skylight can be effectively improved.

The invention relates to the technical field of screw rod processing equipment, in particular to food bulking machine screw rod processing equipment which comprises a machine tool for processing a screw rod original part, two sets of supporting rods symmetrically arranged on the surface of the screw rod original part are assembled on the surface of the machine tool and used for supporting the rotating screw rod original part; a plurality of supporting rods are arranged in each set to prevent the problem that the coaxiality is reduced due to gravity, the multiple supporting rods are arranged in each set to support the original screw rod in a large range, deformation of the original screw rod with the large length-diameter ratio in the machining process due to the gravity is prevented, the machining precision of the screw rod is ensured, the rotating supporting rods can reduce the influence of friction force, and the machining precision is improved. And meanwhile, a plurality of limiting rods are used in cooperation, the threaded round rod is limited in multiple directions, the influence of centrifugal force generated by the original screw rod at the high rotating speed is reduced, and the machining precision of the screw rod is guaranteed from multiple dimensions.

The utility model provides an efficient dust removal mechanism, which relates to the technical field of dust removal, and comprises a base, a dust removal assembly is arranged on the base, an uncovering assembly is arranged on the dust removal assembly, and a first transmission motor drives a first bevel gear to rotate, so that the first bevel gear drives a second bevel gear and a first rotating shaft to rotate; as a first rotating shaft rotates a first blade and a second blade rotates, rapid discharge of air is accelerated, dust is filtered through a filter screen and falls into the bottom of the dust removal box, a brush can clean the dust blocked on the filter screen, and an electric telescopic rod pushes a first sliding block to move; the first sliding block drives the moving rod to move along a sliding groove formed in a limiting plate, so that the box cover can be opened, and friction can be reduced when the moving rod moves on the first sliding block and the limiting plate through cooperation of a movable groove, a limiting block and a ball; therefore, the technical problems of efficient dust removal of the dust removal mechanism and cleaning of the interior of the dust removal mechanism through automatic opening are solved.

The invention relates to the technical field of electric power construction, in particular to a welding device for electric power construction and an intelligent welding system.The welding device comprises a platform, a welding mechanism for welding pipe fittings is arranged above the platform, a fixing mechanism for clamping the pipe fittings is arranged on the surface of the platform, and a water curtain mechanism is arranged above the platform; water is conveyed to an annular pipe through a water conveying pipe through a water pump, the water is sprayed out from a spray head A to form a protective water curtain, welding sparks are blocked, the risk is reduced, a baffle enables water flow to be gathered, the water curtain blocking effect is enhanced, a motor B drives a lead screw, a polishing block is made to be attached to a weld joint, and a pipe fitting is rotated by adjusting a motor A; and meanwhile, compressed air enables a baffle to be turned over, water flow is guided for cooling, chippings are washed out, and friction is reduced, the pipe fitting is placed in a mounting base, an air cylinder B drives a clamping plate for clamping, an electric push rod enables the pipe fitting to be centered, a motor A drives the pipe fitting to rotate, automatic welding is achieved, and quality and efficiency are improved.

The utility model discloses a miniature bearing which comprises a bearing outer ring, a bearing ball and a bearing inner ring, and the bearing ball is limited in a rolling cavity between the inner wall of the bearing outer ring and the outer wall of the bearing inner ring; the retainer comprises a first retainer body and a second retainer body, a plurality of first retaining grooves are formed in the first retainer body in a bent mode, a plurality of second retaining grooves matched with the first retaining grooves are formed in the second retainer body in a bent mode, and retaining cavities for bearing balls are formed between the first retaining grooves and the second retaining grooves. The radian of the first retaining groove is smaller than that of the bearing ball, and the radian of the second retaining groove is smaller than that of the bearing ball. Compared with the prior art, the bearing retainer has the advantages that the structure is simple, the first retainer and the second retainer are matched with the bearing balls, the friction contact area of the bearing balls is reduced, the friction loss is reduced, and the rotation effect is improved.

The utility model discloses an accurate guide device for hot continuous rolling of a kovar alloy plate. The accurate guide device comprises a rack, a conveying roller, a guide mechanism, a fixing mechanism and a cleaning mechanism, the rack is fixed on the ground; the conveying rollers are evenly and rotationally connected to the machine frame through bearings, and the guiding mechanisms are symmetrically installed on the two sides of the kovar alloy plate. The fixing mechanism and the cleaning mechanism are both mounted on the guide mechanism; the guide mechanism comprises a support frame, a connecting plate, a rotating roller, a bidirectional threaded rod, a guide rod and a motor II; the two-way threaded rod is rotationally connected to the rack through a bearing, and the guide rods are fixed to the portions, on the two sides of the two-way threaded rod, of the side wall of the rack. The motor is fixed to the outer side wall of the rack, and the output end is connected with one end of the bidirectional threaded rod. According to the utility model, the Kovar alloy plate can be accurately guided; in the Kovar alloy plate guiding process, the side wall makes contact with the rotating roller, friction can be reduced, and damage to the Kovar alloy plate is further reduced.

The utility model discloses a polycrystalline diamond radial centralizing sliding bearing which comprises a static ring, a movable ring arranged on the inner side of the static ring, a wear-resistant pad and a first polycrystalline diamond layer arranged on the inner side of the movable ring, a second polycrystalline diamond layer arranged on the outer side of the static ring, and a rolling ball arranged on the static ring. A first lubricating groove and a second lubricating groove are formed in the static ring, a first filter screen is fixedly connected to the top of the first lubricating groove, a first retention groove is fixedly connected to the bottom end of the first lubricating groove, a first lubricating channel and a first calandria are communicated to the first retention groove, and a second filter screen is fixedly connected to the top of the second lubricating groove. The bottom end of the second lubricating groove is fixedly connected with a second detention groove, and the second detention groove communicates with a second calandria and a second lubricating channel. By means of the device, the first lubricating groove, the second lubricating groove, the calandria and the lubricating channel are conveyed to the rolling balls, so that the lubricating efficiency is improved, and frictional wear is reduced.

The utility model discloses a battery shell punch forming device, and belongs to the technical field of battery shell manufacturing. The device mainly comprises a frame body; the stamping mechanism is mounted at the upper end of the frame body; the fixing mechanism is installed at the upper end of the frame body, and the fixing mechanism is provided with a mold and a section mold cavity formed in the mold; the material ejecting mechanism is mounted at the lower end of the frame body and comprises a mounting frame, a material ejecting mechanism and a material ejecting mechanism, and the mounting frame is mounted at the lower end of the frame body; the ejection air cylinder is mounted on the mounting frame; the supporting rod is mounted on the mounting frame; the fixing plate is mounted on the supporting rod; the sliding rods are hinged to the two ends of the fixing plate; the spring is mounted at the top end of the sliding rod; and the ejector rod is arranged at one end of the spring. According to the battery shell punch forming device, by arranging the material ejecting mechanism, alternate material ejecting is conducted on the two ends of a battery shell, and therefore the effect of reducing friction force is achieved.

The utility model relates to a villa elevator rolling guide shoe which comprises a mounting plate, a lead screw is fixedly connected to the mounting plate, two moving sleeves are symmetrically connected to the lead screw in a sliding mode, adjusting plates are fixedly connected to the tops of the moving sleeves, mounting shafts are fixedly connected to the tops of the adjusting plates, and rolling wheels are rotationally connected to the outer sides of the mounting shafts. The top of the mounting plate is symmetrically and fixedly connected with two fixing shafts, and the fixing shafts are rotationally connected with the corresponding adjusting plates. The roller device is simple in structure, low in manufacturing cost, small in resistance of the roller structure and low in noise. Resistance is small when the rollers make contact with the guide rails, friction noise can be reduced, and the elevator running comfort is improved. And through cooperative use of a limiting nut and a top plate, accurate positioning and limiting of the moving sleeve are achieved, and the stability and safety of the device are further improved. And the mounting pad arranged below the mounting plate not only can effectively absorb shock, but also facilitates fixation and adjustment of the mounting plate, and the reliability of the whole device is enhanced.

A substrate lift driving unit, a manufacturing apparatus of a display device provided with the same, and a method for manufacturing a display device, which can increase manufacturing efficiency by minimizing wear of a manufacturing apparatus to increase the life of the manufacturing apparatus and also can supply a lubricant to the manufacturing apparatus during operation of the manufacturing apparatus, are provided. The substrate lift driving unit includes a shaft extending in a first direction, a main body sliding along the shaft, a friction reducing portion between an outer circumferential surface of the shaft and an inner surface of the main body, and a power portion connected to the shaft and providing power for relative movement of the shaft and the main body. The shaft includes an inlet at one end portion of the shaft, an outlet at an outer circumferential surface of the shaft, a first flow path formed inside the shaft and extending from the inlet in the first direction, and a second flow path extending from the first flow path in a second direction crossing the first direction to the outlet and in fluid communication with the first flow path.