361 results about "Low friction" patented technology

The invention discloses an electroplated part, an electroplated part manufacturing method and a connector. The electroplated part comprises a base material; a nickel plating layer formed on the surface of the base material; the tin-graphite composite plating layer is formed on the nickel plating layer; the nickel plating layer is formed on the base material, the tin-graphite composite plating layer is formed on the nickel plating layer, the tin plating layer is formed on the tin-graphite composite plating layer, the nickel plating layer serves as a bottom plating layer of the base material, the tin plating layer serves as an outer plating layer of the base material, and the tin-graphite composite plating layer serves as a middle plating layer of the base material. According to the invention, the graphite particles exposed from the tin-graphite composite coating are partially or completely wrapped by the outermost tin coating, so that the graphite particles are not easy to fall off, the wear resistance and corrosion resistance of the electroplated part are improved, and the service life of the electroplated part is prolonged. In addition, the plating layer structure also has a relatively low friction coefficient, so that the insertion and extraction force of the electroplated part in the use process can be greatly reduced.

The invention discloses a thin and thick paper tension stabilizing traction device, which relates to the technical field of paper traction, and comprises a bearing frame, a paper feeding roller, a threaded paper spreading and passing roller, a tension roller and a tension sensor, a swing mechanism is arranged in the bearing frame and comprises an air cylinder displacement sensor, an ultra-low friction swing rod air cylinder, a swing roller, a swing roller force arm, a swing roller balance weight rod, a low-tension position hole and a high-tension position hole, the low-tension position hole and the high-tension position hole are formed in the side edge of the swing roller force arm, and the swing roller and the swing roller balance weight rod are installed on the side edge of the swing roller force arm. Paper flattening is achieved by means of thread structures of the thread paper unfolding and passing roller and the paper feeding roller, and initial tension of different pieces of paper is accurately detected in cooperation with a tension sensor. Through the combination of the swing roller balance weight lever, the ultralow friction swing rod cylinder and the low / high tension position hole, the tension can be flexibly adjusted to adapt to different characteristics of thick paper and thin paper, and the problem that the tension of the thick paper is insufficient or the thin paper is excessively stretched is solved.

The invention relates to the technical field of desiccant packaging equipment, and discloses a desiccant packaging supply film forming device which comprises a packaging forming device and a regulation and control conveying mechanism installed on the packaging forming device. Comprising a first rotating shaft fixedly connected with the packaging forming device and a first friction roller fixed to the first rotating shaft. Each of the two second friction assemblies comprises a second friction roller mounted on the first rotating shaft; the moving assembly is used for controlling the two second friction rollers to move; the heat dissipation assembly works in cooperation with the moving assembly and is used for enabling two second friction rollers to move in opposite directions through the moving assembly according to the friction coefficient needed by the packaging film and the material of the packaging film, and the contact area between the two second friction rollers and the packaging film is changed; for a smooth PE film, the contact area is reduced, and the friction force is reduced; for rough composite aluminum films, the contact area is increased, the friction force is improved, film material slipping or tensile deformation is avoided, and the film supply stability is ensured.

The invention provides an epoxy resin wear-resistant coating and a preparation method thereof, and belongs to the technical field of polymer composite materials. The epoxy resin wear-resistant coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 2 to 20 parts of composite filler, 5 to 30 parts of curing agent, 0.2 to 4 parts of defoaming agent and 0.5 to 5 parts of flatting agent, the composite filler is PTFE and a modified inorganic filler; the modified inorganic filler is a compound system of modified nano SiO2, modified nano ZnO, modified MoS2 and modified nano Al2O3. According to the invention, the antifriction material and the reinforcing material are compounded, and the silane coupling agent is used for surface modification, so that firm combination of the filler and the epoxy resin matrix is realized. MoS2 and PTFE provide a continuous lubricating effect, and the friction coefficient is reduced; the hardness, the strength and the bearing capacity of the coating are remarkably improved through the nano oxide particles, and the coating has the characteristics of low friction and high wear resistance through the synergistic effect of the nano oxide particles and the coating.

The invention discloses a surface coating method for realizing thrust amplification of a sail, which is characterized in that a sail blade which takes a glass fiber composite material as a basic material comprises a step of anti-drag coating of a convex surface part of the sail blade, a step of anti-drag coating of a concave surface of the sail blade, a step of special coating of a sail blade end plate and a step of special coating of a sail blade guide device. A low-friction and high-wear-resistance coating which takes modified PTFE resin as a base material and contains nano aluminum oxide and graphite micro powder is adopted for the convex surface; and the concave surface adopts a vortex breaking-strong adhesion type coating which takes fluorocarbon resin (PVDF) as a base material and contains nano silicon dioxide and hollow glass beads. According to the invention, the thrust efficiency is improved by 60-80%; the thrust stability under the wide wind speed is improved by more than 60%, the service life of the sail blades can be prolonged, the operation and maintenance cost is reduced, an existing sail can be directly transformed, and the sail has the advantages of being low in cost and high in efficiency and has economic and environment-friendly values.

The application discloses a graphene-diamond composite coating and a preparation method and application thereof, and belongs to the technical field of materials. The graphene-diamond composite coating comprises a diamond coating and a graphene coating; graphene sp2 bond structure is covalently combined with diamond sp3 bond structure; and the graphene coating has a graphene structure with non-parallel growth mainly in a vertical direction. The graphene-diamond composite coating has small lattice mismatch between the diamond and the graphene, avoids volume expansion caused in a friction heat process, and has the advantages that the diamond coating can provide a support layer for the graphene, forms super-strong C-C covalent bonds at an interface, and significantly improves the adhesion strength of the graphene; the graphene can avoid brittle fracture of the diamond, and significantly improves the lubricating performance of the surface of the diamond coating. The composite coating has better wear resistance, a low friction coefficient and excellent oxidation resistance, and can remain stable under high-temperature and high-load working conditions, so that the service life and processing efficiency of wear-resistant parts are improved.

The present invention provides a retainer for a rolling bearing that can stably maintain a low friction state even under severe lubrication conditions such as high-speed rotation by defining the surface roughness of the retainer using a plurality of three-dimensional surface roughness parameters, and a rolling bearing that uses the retainer. [Solution] The retainer 5 is a cylindrical resin retainer for a rolling bearing, and is formed with multiple pockets 6 that hold the rolling elements. The surfaces 6a that form the pockets 6 and at least one of the inner diameter surface 8 and outer diameter surface 9 of the retainer 5 have a value of A=(Sa / 10)+Str+(Spk / 10), which is calculated from the arithmetic mean height Sa, the aspect ratio Str of the surface texture, and the protruding peak height Spk, of 1.20 or more.

A dry gas seal assembly for use with a rotating machine that includes a rotating shaft, the seal assembly comprises a seal face bears a solid coating comprising molybdenum disulfide, graphene oxide, and optionally polydopamine, preferably wherein the graphene oxide to molybdenum disulfide ratio is 8:10 to 10:8. A method for making a dry gas seal assembly comprises coating a homogeneous dispersion of graphene oxide and molybdenum disulfide on a seal face.

The utility model discloses a reciprocating type product elevator, and relates to the field of product lifting, the reciprocating type product elevator comprises a frame body, a servo motor, a lifting chain and a material box used for placing products are arranged on the frame body, a conveying frame used for conveying the products is arranged on one side of the frame body, and the conveying frame and the material box are arranged in parallel; a positioning mechanism used for limiting products is arranged on the material box and comprises two limiting plates symmetrically arranged on the material box. Products are guided and centralized through the two guide plates, so that the phenomena of deviation and the like of the products can be avoided, the products can move into the material box at the moment, the positions of the products are fixed and limited through the two limiting plates, and therefore the phenomena of shaking, deviation and the like of the products during lifting can be avoided; and through the first rolling wheel, the second rolling wheel and the third rolling wheel, the product can be conveniently moved, friction force is reduced, and therefore stability and safety during operation can be improved.

We offer a gaming mouse pad with a hybrid structure that achieves a balance between smooth gliding and braking performance, while also combining visibility and aesthetic appeal. [Solution] This gaming mouse pad has a hybrid structure with an ultra-low friction material in the center and fine resistance fibers at the edges. Compared to conventional mouse pads, which had difficulty balancing gliding performance and braking performance, this mouse pad improves the balance of operability by placing an ultra-low friction material in the center and fine resistance fibers at the edges.

The invention discloses a MoS2-TiO2-polyimide composite film material and a preparation method thereof, and belongs to the technical field of polymer-based composite film materials. According to the preparation method, TiO2 nanowires are vertically grown on the surfaces of MoS2 nanosheets in an in-situ manner through MoS2-TiO2 hybridization, meanwhile, a strong heterojunction structure is constructed, a firm chemical bonding interface is formed, the excellent lubricating property of MoS2 and the excellent wear resistance and high bearing capacity of TiO2 are integrated, and functional complementation and synergistic enhancement are achieved; meanwhile, a polyimide matrix is bridged through a zinc ion coordination bond, the material is endowed with excellent mechanical strength and toughness, and due to the integrated design of lubrication, wear resistance and bearing, the material has the unique advantages of low friction coefficient, high wear resistance and high load at the same time; tests show that the MoS2-TiO2-polyimide composite film material has excellent photothermal conversion performance, mechanical property, thermal property and self-lubricating property.

The invention belongs to the technical field of high polymer materials, and particularly relates to a low-friction machinable fluorine-containing composite material as well as a preparation method and application thereof. The middle-low friction machinable fluorine-containing composite material is prepared from the following raw materials in percentage by mass: 80-95% of fusible polytetrafluoroethylene and 5-20% of filler, the filler comprises any one or more of graphite, carbon fiber and polytetrafluoroethylene (PTFE). The low-friction machinable fluorine-containing composite material provided by the invention has low friction coefficient and high compression strength at the same time.

The application discloses a drilling machine bed assembly, which comprises a long strip-shaped rack, a moving seat slidingly arranged on the rack along the length direction of the rack, a driving mechanism for driving the moving seat to slide, a guide rail and a guide piece slidingly matched and arranged between the moving seat and the rack, and a load-bearing assembly arranged on the moving seat, wherein the load-bearing assembly comprises a composite roller bearing, and the main roller and the side roller of the composite roller bearing roll on the rack along the length direction of the rack. The drilling machine bed assembly bears the pressure from the moving seat through the composite roller bearing in the load-bearing assembly, thereby reducing the friction between the moving seat and the rack, lowering the abrasion, reducing the abrasion between the guide piece and the guide rail when the moving seat moves, avoiding the shaking of the drilling tool during the movement of the drilling tool caused by the too large gap between the guide piece and the guide rail, thereby affecting the drilling efficiency, prolonging the service life of the guide piece and the guide rail, and avoiding the increase of the drilling cost caused by the frequent replacement.

The invention discloses a wide-temperature-range self-adaptive friction-reducing and wear-resistant chromium-containing refractory high-entropy alloy material and a preparation method thereof, and belongs to the technical field of wear-resistant alloy materials, and the high-entropy alloy material comprises the following raw materials in percentage by mass: Ta, Mo, Ti and Cr. The preparation method comprises the steps that Ta powder, Mo powder, Ti powder and Cr powder are weighed by mass, ball milling is conducted, then sintering is conducted through a spark plasma sintering method, and the wide-temperature-range self-adaptive anti-friction and anti-wear chromium-containing refractory high-entropy alloy material is obtained. By introducing the chromium element, the alloy can adaptively form an oxide layer with lubrication and protection effects in a wide temperature range from room temperature to ultrahigh temperature, so that the alloy shows excellent tribological performance and has extremely low friction coefficient and wear rate. The material has a wide application prospect in the fields of wear-resistant lubricating materials and high-temperature wear-resistant parts.

The invention provides a high-pressure wear-resistant valve rubber. The valve rubber is prepared from the following raw materials in parts by weight: 100 parts of a polyurethane prepolymer, 20 to 30 parts of a chain extender, 12 to 18 parts of a polycaprolactone coated boron nitride / molybdenum disulfide composite material and 0.5 to 2 parts of an antioxidant. Wherein the polycaprolactone coated boron nitride / molybdenum disulfide composite material is obtained by polymerizing an amino silane coupling agent modified boron nitride / molybdenum disulfide composite material, triethyl aluminum and epsilon-caprolactone in an organic solvent at 35-45 DEG C in an inert atmosphere. A polycaprolactone-coated boron nitride / molybdenum disulfide composite material is used as a filler, and boron nitride / molybdenum disulfide as an inner core forms a synergistic structure of a reinforced substrate and a lubricating surface layer, so that high-pressure load bearing and friction coefficient reduction are facilitated; and the polycaprolactone flexible shell layer is compatible with the matrix, so that the filler is uniformly dispersed in the matrix.

This utility model discloses a telescopic pressing head for correction tape, relating to the field of correction tape technology. The telescopic pressing head provided by this utility model includes a tape outlet head, with protective plates at both ends. A sliding plate is connected to one side of the tape outlet head, and a first connecting plate is provided on the top of the sliding plate. Rotating shafts are connected to both ends of the first connecting plate, and a second connecting plate is connected to the other end of the rotating shafts. This utility model, by rotating a first rotating rod, causes a third connecting plate to rotate around the first rotating rod, causing a pulley to slide inside a first sliding groove, thereby rotating the second connecting plate and driving the sliding plate to telescopically move. The cooperation of these components results in low friction and low resistance during movement, achieving smooth movement and ensuring stable operation of the correction tape during telescopic and tape-out operations, avoiding damage caused by shaking or misalignment of the exposed tape outlet head.

The invention belongs to the technical field of optical communication cables, and particularly relates to a low-friction air-blowing micro cable based on ionic liquid. According to the invention, a traditional solid particle lubrication system is abandoned, the ionic liquid is introduced into an optical cable sheath material as a core lubricant, and because the ionic liquid forms a uniform lubricating film with molecular-level thickness on the surface of the sheath and cooperates with a synergistic lubricant polytetrafluoroethylene micro powder, a synergistic effect of soft liquid phase lubrication and hard rolling lubrication is formed. And the friction coefficient is obviously lower than that of a system based on MoS2. Tests show that the dynamic friction coefficient of the sheath relative to the HDPE micropipe can be stably reduced to below 0.08 and even reach the level of 0.03-0.05, and the dynamic friction coefficient far exceeds the performance limit (lt: 0.1) of the prior art.

The invention relates to the field of surface protective coatings, in particular to a wear-resistant self-lubricating coating and a preparation method thereof.The wear-resistant self-lubricating coating is of a gradient composite structure composed of a matrix binding layer, a transition wear-resistant layer and a surface lubricating layer, the matrix binding layer is Ni-Co alloy doped with TiC nano-particles, and the transition wear-resistant layer is a Ni-Co alloy doped with TiC nano-particles. The transition wear-resistant layer is CrC-AlO composite ceramic doped with WSlubricating particles, a tough nano-composite bonding layer is prepared through magnetron sputtering on the basis of combination of matrix pretreatment optimization, the high-hardness wear-resistant ceramic middle layer is constructed through plasma spraying, and the wear-resistant ceramic middle layer is prepared through plasma spraying. Then an intelligent surface layer with an instant-reserve dual-mode lubricating function is elaborately laid through a low-temperature plasma spraying technology, and finally the coating structure is stabilized through post-treatment; the gradient design is combined with precise manufacturing, so that the coating has excellent adhesive force, extremely high wear resistance, ultralow friction coefficient and unique long-acting self-lubricating capacity at the same time, and long-acting reliable protection under severe working conditions is realized.

The application provides a low-friction high-wear-resistance resin-based composite material and a preparation method and application thereof, and belongs to the field of composite materials. The polytetrafluoroethylene nano powder modified by radiation is used together with inorganic filler particles such as graphite nano powder, molybdenum disulfide nano powder and the like to prepare a polyphenylene sulfide-based composite material at a certain compounding ratio. The composite material shows excellent tribological properties. On this basis, by adding a chopped carbon fiber and the like as a reinforcing filler, a high-strength, low-friction high-wear-resistance polyphenylene sulfide-based composite material is prepared by using a multi-scale functional filler network structure constructed inside the composite material. The technical process route of the application is simple, and the manufacturing cost is low. The application can be used for preparing friction protection parts, low-friction wear-resistant structures, wear-resistant bearings, self-lubricating parts, mechanical gaskets and the like under dry friction, and has a very broad application prospect in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment.

The present invention presents a bed lift designed originally for campervans, but with application to other space-limited locations where a temporary bed or other platform is useful. The invention provides for self-adjusting mounts which allow for installation tolerance in a wide variety of potential areas. The platform is stabilized and counterbalanced to allow for safe usage while simultaneously being able to accommodate a generous load capacity. Importantly, the lift mechanism utilizes low friction operation and a pulley system which allows an operator to raise or lower the platform with or without powered assistance.

A garment includes a sleeve of material and a first securing element. The material includes a contact surface that is low friction when in contact with a surface of a human body. The first securing element is attached to the sleeve of material secures a first end of the sleeve of material to an arm of a wearer of the garment. Additionally, the first securing element limits movement of the sleeve of material along the arm when the sleeve of material is in contact with the surface of the human body.

The invention belongs to the technical field of oil-based super lubrication, and particularly relates to a construction method of super-lubrication low-viscosity polar polyether modified silicone oil. The preparation method comprises the following steps: reacting allyl polyether with hydrogen-containing silicone oil according to a mass ratio of (70-80): 1 under the catalytic condition of chloroplatinic acid to obtain low-viscosity polar polyether modified silicone oil, and mixing 0.5 wt.%-1.5 wt.% of a polar additive, 0.1 wt.%-0.5 wt.% of surface functionalized nanoparticles and 97.5 wt.%-99.4 wt.% of the low-viscosity polar polyether modified silicone oil according to mass percent to obtain the compound lubricating oil. Performing ultrasonic treatment on the composite lubricating oil, and standing to obtain the super-lubricating low-viscosity polar polyether modified silicone oil. The polar additive molecules and the small-size and easy-to-disperse functional nanoparticles are compounded at the same time, so that the interaction between a lubricating film and a friction surface is remarkably enhanced in a cross-scale manner, and a friction pair motion interface is promoted to form a friction composite film with high bearing and low shearing characteristics; and stable ultralow friction and abrasion under the working conditions of wide rotating speed and wide load are achieved, and theoretical and technical supports are provided for engineering application of the oil-based super-lubrication technology.

The utility model relates to the technical field of sealing elements, in particular to a multi-lip composite oil seal structure which comprises a sleeve arranged outside a shaft body in a sleeved mode, a first carbon steel framework and a second carbon steel framework, the axial section of the first carbon steel framework and the axial section of the second carbon steel framework are both of an L-shaped structure, and the first carbon steel framework and the second carbon steel framework are symmetrically arranged on the periphery of the sleeve. A rectangular inner cavity is formed between the first carbon steel framework and the second carbon steel framework and filled with lubricating grease. According to the technical scheme, the rigidity and the wear resistance are enhanced by arranging the symmetrical carbon steel frameworks, and composite lithium-based lubricating grease is filled between the carbon steel frameworks and a sealing cavity, so that friction is reduced, and a grease barrier is formed; the first sealing lip and the second sealing lip are combined with the spiral flow guide groove to form a multi-stage sealing cavity structure, the spring compensates elastic attenuation of the lips, efficient dust prevention, low friction and deformation resistance are integrally achieved, the service life of the oil seal is prolonged, and the oil seal is suitable for high-pollution working conditions.

A contact type displacement sensor with high stability and accuracy comprises a probe assembly and an outer shell, and a grating code ruler assembly, a linear motion guide assembly and a PCBA circuit board are arranged in the outer shell. The grating code ruler assembly comprises grating glass and a grating support. The grating glass is installed on the grating support, and a plurality of transparent lines and opaque lines are formed on the grating glass. In conclusion, the pin is adopted to replace traditional threaded connection to achieve rigid positioning of the grating code ruler assembly, accumulative errors caused by assembly gaps and vibration are effectively eliminated, and the movement stability and the measurement repeatability are remarkably improved by combining a low-friction matching structure of the guide sliding groove and the pin; according to the overall structure, the assembly process is simplified, the abrasion risk of long-term use is reduced, high-stability and high-precision continuous displacement detection can be achieved in a complex industrial environment, and the strict requirement for measurement reliability in the precision manufacturing field is met.

The invention relates to a nano composite microsphere lubricating material and a preparation method thereof, the material is a nano composite microsphere with a three-layer composite core-shell structure, the core is a zinc sulfide nanosphere, the middle layer is a molybdenum disulfide lubricating layer, and the shell is a polyurethane coating layer; the outer diameter of the nano composite microsphere is 90-150nm, the diameter of the zinc sulfide nano sphere is 20-40nm, the thickness of the middle layer is 25-35nm, and the thickness of the shell is 10-20nm. When the material is added into lubricating grease as a solid lubricating material, nanoscale balls can roll between friction pairs, sliding friction is partially converted into rolling friction, and the friction coefficient is effectively reduced; meanwhile, the released molybdenum disulfide and zinc sulfide are spread on the metal surface together to form a layer of firm composite solid lubricating film with low shear strength, so that the extreme pressure anti-wear property is improved; in addition, the polyurethane shell can block oxygen and delay oxidation of the lubricating grease while improving the dispersity.

A joint restraint assembly for a pipe, the joint restraint assembly including an annular body, and a wedge assembly received within an opening of a wedge housing of the annular body. The wedge assembly includes a bolt including a flange, and a low-friction material positioned between the flange and an interior surface of the wedge housing, which low-friction material is adapted to slidably engage the interior surface during relative movement between the wedge assembly and the wedge housing. A wedge member is attached to the bolt so that the flange is positioned between at least a portion of the low-friction material and at least a portion of the wedge member. The wedge member is adapted to engage the pipe.

The application relates to the technical field of power engineering cable installation, and discloses an optical and electrical combined cable integrated laying and protection system for complex working conditions, which comprises: a rigid base configured to be anchored at a turning node; and a self-adaptive bearing assembly rotatably installed on the rigid base; the bearing assembly comprises elastic split units arranged in an axial direction; each unit is converted from an open state to a holding state of wrapping the side wall of the cable under radial pressure; and the inner surface of the unit is provided with a partitioned friction structure, which comprises a bottom high-friction rolling driving surface and two side wing low-friction sliding decoupling surfaces; through the cooperation of the tribological anisotropic structure and the self-adaptive geometric deformation, the tangential shear wear in the deep envelope state is eliminated, and the physical damage problem of the cable sheath and the optical unit in high-tension laying is solved.

The utility model discloses a vibration disc for automatic feeding of cylindrical sleeves, which comprises a vibration chassis provided with a vibration motor and used for generating high-frequency vibration; the spiral track is arranged on the vibration chassis, is spirally arranged, is provided with a side wall and is used for guiding the cylindrical sleeve to be conveyed upwards along the track; the material screening and posture adjusting device is arranged in the middle or the tail end area of the spiral track, comprises a plurality of baffles, notches and a sawtooth-shaped line structure, and is used for screening and adjusting the posture of the cylindrical sleeve, so that the cylindrical sleeve is finally output in the state that the opening faces upwards; and the discharging track is arranged at the tail end of the spiral track and used for outputting the cylindrical sleeves after posture adjustment. According to the automatic feeding device, the multi-stage screening structure and the low-friction discharging track are matched with intelligent vibration control, stable, efficient and consistent-posture automatic feeding of the cylindrical sleeves is achieved, and the feeding accuracy and the automation level of an assembly line are remarkably improved.

The invention discloses a high-speed ring shear test device and a use method thereof, and belongs to the technical field of high-speed ring shear tests. According to the high-speed ring shear test device provided by the invention, a composite structure system with high-speed rotation driving and controllable axial loading is constructed, so that high-speed dynamic simulation of mechanical behaviors of a soil sample is realized. According to the upper rotation driving system, a first servo motor is matched with a low-friction bearing to drive an upper shearing cover plate, the stability of high-speed rotation around a shaft is guaranteed by reducing mechanical transmission resistance, and therefore the speed limit of a traditional ring shearing device is broken through; the shearing execution cavity and the inner ring of the shearing cavity form a stepped shearing cavity through an annular groove with increasing diameter at the bottom of the upper shearing cover plate, so that effective constraint of a soil sample in the high-speed shearing process is ensured, and the shearing area is maintained to be constant through an annular cavity structure. The lower axial loading system is linked with the lower shearing device through a shearing box supporting disc, so that the axial stress loading condition can be accurately controlled, and the stress states of different depths in the actual landslide can be simulated.