21results about How to "Reduce rolling resistance" patented technology

The utility model relates to a tubeless all-steel truck radial tire tread pattern structure which comprises a tire tread, and further comprises longitudinal straight groove patterns which are respectively and uniformly distributed from a central line to two sides in the circumferential direction of the tire tread and comprise a first longitudinal straight groove pattern and a second longitudinal straight groove pattern; the transverse inclined grooves are connected between the adjacent longitudinal straight groove patterns and comprise first transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns, second transverse inclined straight grooves connected with the adjacent first longitudinal straight groove patterns and second longitudinal straight groove patterns, and Z-shaped transverse inclined grooves; the inclination direction of the first transverse inclined straight groove is opposite to that of the second transverse inclined straight groove, and the inclination direction of the second transverse inclined straight groove is consistent with that of the Z-shaped transverse inclined groove. Compared with the prior art, the utility model can effectively solve the problems of blockage of broken stones or foreign matters and low drainage efficiency, and has good guidance quality, drainage performance, road holding force, sideslip resistance and multi-road-condition adaptability under the condition of high-speed driving.

The utility model discloses a kind of all terrain loaders of wheel-track composite drive, it is related to engineering technical field, comprising: vehicle body and at least one group wheel-track switching walking mechanism, wherein each group wheel-track switching walking mechanism includes: driving shaft, for receiving power input;Multiple tensioning wheel hubs, by multiple tensioning hydraulic devices and multiple wheel-track switching telescopic hydraulic devices are installed on the support;Track, it is arranged at the outside of tensioning wheel hub, annular protrusion or groove is arranged in its inside side;Tensioning hydraulic device and wheel-track switching telescopic hydraulic device are used to drive tensioning wheel hub to realize displacement and attitude change.The utility model sets up tensioning hydraulic device and wheel-track switching telescopic hydraulic device to drive the tensioning wheel hub to realize displacement and attitude change by being arranged as wheel-track switching walking mechanism, make track switch between circle and polygon, to reach the purpose of wheel-track switching of walking mechanism.

The tire (1) of the present application has a pair of bead cores (11, 11), a carcass layer (13) erected on the bead cores (11, 11), and a belt layer (14) disposed on the radially outer side of the carcass layer (13). Furthermore, the tire outer diameter OD [mm] is in the range of 200 ≤ OD ≤ 660, and the total tire width SW [mm] is in the range of 100 ≤ SW ≤ 400. Furthermore, the breaking strength Tcs [N / 50 mm] per 50 [mm] width of the carcass ply constituting the carcass layer (13) is in the range of 17 ≤ Tcs / OD ≤ 120 with respect to the tire outer diameter OD [mm].

The present application relates to a multi-material composite parallel layered bead structure and design method, and belongs to the field of tire structure and manufacturing method thereof. The cross-sectional shape of the bead is hexagonal, the bead is composed of multiple composite layers stacked along the radial direction of the cross-section of the bead, the multiple composite layers contain at least two material layers with different elastic moduli, and the elastic modulus of each material layer is gradiently distributed along the radial direction of the cross-section of the bead; the laying direction of each material layer is parallel to the bottom side of the hexagonal cross-section, forming a parallel composite layered structure. The present application gradiently lays and arranges multiple materials with different elastic moduli along the radial direction of the cross-section of the bead, actively adjusts the stress proportion of each load-bearing layer, promotes the balanced distribution of the hoop tension in the full cross-section range, and thus improves the fatigue resistance quality and service life while maintaining the overall load-bearing capacity of the bead.

The application discloses a preparation method of modified white carbon black, modified white carbon black, and prepared masterbatch and vulcanized rubber. The preparation method of the modified white carbon black comprises the following steps: uniformly mixing silane coupling agent, sorbitan fatty acid ester surfactant, organic solvent and white carbon black to obtain the modified white carbon black. The application uses specific surfactant sorbitan fatty acid ester and silane coupling agent, modifies the white carbon black organic solvent dispersion liquid in a high-speed dispersion machine, and prepares the masterbatch filled with the white carbon black by liquid-phase compounding technology of the rubber solution, so as to prepare the rubber vulcanized rubber from the masterbatch. Compared with the traditional dry mixing technology or the wet mixing technology using the coupling agent alone, the dispersion of the white carbon black in the rubber matrix is better, the dynamic performance, heat generation and wear resistance of the rubber compound are improved, and the prepared vulcanized rubber can be used for preparing the tread rubber, so that the rolling resistance and heat generation of the tire are reduced.

This invention discloses a 5-amino-1,4-naphthoquinone propyltriethoxysilane, its preparation method, and its applications. The product is prepared by a substitution reaction of 5-amino-1,4-naphthoquinone and chloropropyltriethoxysilane in the presence of an acid-binding agent. The product is an orange-brown liquid with diverse functions. When applied to silica-modified tires, compared to conventional silane coupling agents, besides the siloxy groups improving the dispersibility of silica, the electron-deficient double bonds can undergo bonding reactions with double bonds in natural rubber, further promoting the dispersion of silica in the rubber compound, improving the mechanical properties of the rubber compound, and reducing tire rolling resistance. Furthermore, the hydroxyl groups generated by the bonding reaction and the inherent amine groups in the structure can delay rubber aging, making it valuable for industrial applications.

The invention relates to the technical field of tire manufacturing, and discloses an electric vehicle tire of a high-modulus polyester tire body cord thread, by adopting the polyester cord thread with a specific parameter combination (low constant load elongation and low dry heat shrinkage rate) and controlling the elongation rate of the cord thread at a forming drum, the bearing potential of a tire body is directly maximized, and the tire body is not damaged. Therefore, the manufactured tire can meet the requirement of the electric automobile for high bearing capacity, and meanwhile, the tire has low rolling resistance and good maneuvering performance. The reinforced tire body can be used for building a firmer skeleton for the tire, so that stronger lateral support can be provided during high-speed steering, the deformation of the tire wall is effectively inhibited, and the control stability and the safety limit of a vehicle are synchronously improved.

The utility model relates to a tread pattern structure of a medium-short distance all-steel truck radial tire, which is characterized in that three rows of Z-shaped zigzag grooves in the same direction are distributed on a tire tread along the circumferential direction of the tire tread, and main pattern blocks with irregular pentagonal structures are distributed between the adjacent Z-shaped zigzag grooves to form two rows of blocky pattern columns; an inclined shallow groove is formed between every two adjacent main pattern blocks in each row. And the main pattern blocks in the block-shaped pattern columns on the two sides of the central zigzag groove are reversely arranged in a staggered manner along the circumferential direction. A plurality of stone discharging blocks are arranged at the bottom of the Z-shaped zigzag ditch in the extending direction of the Z-shaped zigzag ditch, and the stone discharging blocks comprise main stone discharging blocks and auxiliary stone discharging blocks which are sequentially and alternately connected. A plurality of knife-shaped shallow grooves are evenly distributed in the shoulder portions of the tire tread, a plurality of block-shaped heat dissipation square grooves are evenly distributed below the two shoulder portions of the tire tread, and a plurality of exhaust holes are evenly distributed in the peripheries of the main pattern blocks. Compared with the prior art, the tire tread pattern structure disclosed by the utility model has the advantages of low rolling resistance, strong road holding force, good stone discharging performance and the like.

The invention discloses a device and method for maintaining a load position unchanged, the device comprises lower telescopic units, a box body, a rope, a side edge steering unit, a center switching mechanism, an upper telescopic unit and a fixing clamp, the fixing clamp used for clamping the rope is installed in the middle of the bottom end of the box body, and a plurality of lower telescopic units are installed at the bottom end of the box body; a plurality of lower telescopic units are installed on the top of the box body and distributed in an array mode, a center switching mechanism is installed in the middle of the box body, a plurality of upper telescopic units are installed on the top of the box body and distributed in an array mode, and side edge steering units are installed on the two sides of the top of the box body. The device is suitable for the transmission balance test on the single crystal furnace, and is also suitable for occasions where the upper end is continuously lifted, the load weight is increased and the position is not changed, the load does not need to be designed to be equal to a crystal silicon rod in length or equal to a furnace body in diameter, and space conflicts between the load and the furnace body and between the load and an auxiliary chamber are avoided.

The present application relates to a kind of rubber nanocomposites, especially relates to a kind of wet mixing rubber masterbatch containing trans-polybutadiene rubber and the preparation method and application of composite material.The composite material is made of the following components by weight parts:20-95 parts of wet mixing rubber masterbatch, 0-20 parts of natural rubber NR, 0-15 parts of butadiene rubber BR, 5-15 parts of trans-polybutadiene rubber TBIR, 0-60 parts of other rubber, 0-30 parts of carbon black, 0.3-5 parts of accelerator, 0.3-8 parts of sulfur, 1-4.5 parts of zinc oxide, 1-9 parts of stearic acid, 1-5 parts of antioxidant, and 0-20 parts of other additives.The wet mixing technology is used in the mixing rubber masterbatch, a large amount of filler and rubber are dispersed first, the masterbatch with good dispersion of filler and additives is prepared, and then other rubber is mixed and vulcanized, to reduce the environmental pollution in preparation.The fatigue resistance and wear resistance of the vulcanized rubber composite material are improved, and the rolling resistance is reduced, which can be applied to the tread, sidewall and upper triangular part of all-steel truck tire, all-rigid or semi-steel passenger car tire, and damping elastic element products.

The utility model discloses a low rolling resistance bicycle tire relates to bicycle tire field, including tire main part, the outer wall of tire main part is provided with thickened rubber ring. The utility model discloses a tire main part is closely pasted with thickened rubber ring and plays the role, and the setting of thickened rubber ring can reduce the deformation when contacting with the ground, reduces the rolling resistance, and the tire wall plays the role of closely pasting with nanometer aerogel, and nanometer aerogel ultralow thermal conductivity and high pass through the setting thickened rubber ring and play the role of closely pasting with paraffin alumina composite particle, and the setting paraffin alumina composite particle will occur phase change when temperature changes, when tire main part drives under high temperature environment, paraffin alumina composite particle changes from solid to liquid, absorbs heat, under low temperature environment, paraffin alumina composite particle changes from liquid to solid, releases heat, ensures that tire main part can keep good performance under different temperature environment.

The invention belongs to the technical field of high polymer materials, and particularly relates to a modified structure regulator and application. The structural formula of the modified structure regulator is as shown in formula (I), the modified structure regulator is applied to preparation of solution polymerized styrene-butadiene rubber to realize accurate regulation and control of a microstructure, and on the basis of the total mass of a structural unit from a conjugated diene monomer in a single molecular chain, the content of a vinyl structure is 25-40%, the content of trans-1, 4-butadienyl is 35-45%, and the content of cis-1, 4-butadienyl is 35-45%. And the content of 1, 4-butadienyl is 15-40%, so that the rolling resistance of the rubber is obviously reduced on the premise of not sacrificing or even improving the wet skid resistance and wear resistance.

This invention provides a method for in-chain modification of solution-polymerized styrene-butadiene rubber (SBR) and its application. The modification method includes the following steps: S1, mixing styrene monomers and butadiene, solvent toluene, and a polar modifier, single-ended hydrogen-containing silicone oil, and adding an alkyl lithium initiator for reaction; S2, adding a platinum catalyst to the product obtained in S1 for reaction; S3, precipitating the product in S2 using methanol as a precipitant, filtering, and drying. This method uses single-ended hydrogen-containing silicone oil as a polarity modifier to prepare randomized SBR. After the reaction, the single-ended hydrogen-containing silicone oil is added to the raw rubber chain via hydrosilylation, changing the polarity of the raw rubber, improving the interfacial bonding force between SBR and filler silica, and making the filler more uniformly dispersed in the rubber compound, thereby improving the mechanical properties and wet skid resistance of the rubber and reducing its rolling resistance.

The utility model discloses a kind of calendering devices for copper wire processing, it includes mainboard, the upper surface of the mainboard is fixedly connected with unwinding device, the upper surface of the mainboard is fixedly connected with cleaning device, the upper surface of the mainboard is fixedly connected with calendering mechanism. Through the above structure, by setting unwinding device, cleaning device and calendering mechanism, the rotational speed of unwinding roll can be accurately controlled by setting unwinding device using unwinding motor, copper wire tension is accurately regulated and controlled, then by setting cleaning device using baffle perforation design, copper wire surface corrosion is removed by physical scraping effect, damage to copper wire matrix is reduced, and fan-shaped nozzle is configured, uniform coverage of antioxidant is formed, ensure that copper wire surface forms effective protective film, finally by setting calendering mechanism using cam drive cutter micron level notch is formed on copper wire surface, guide metal flow to notch area, significantly reduce calendering resistance, improve calendering effect, prolong equipment life.

Embodiments of the present disclosure are directed to functionalized copolymers produced by copolymerization of at least one conjugated diolefin monomer and at least one vinyl monomer, the functionalized copolymer comprising at least one functional group having silica reactive moieties, wherein the functionalized copolymer has a degree of hydrogenation of 75% to 98 mol% as measured using proton nuclear magnetic resonance spectroscopy (1H NMR).

The invention provides a multi-dimensional filler, a rubber composite material and a preparation method and application of the multi-dimensional filler and the rubber composite material. The multi-dimensional filler is obtained by mixing and reacting at least two fillers with different dimensions; the filler is a three-dimensional filler, a two-dimensional filler or a one-dimensional filler, and the surface of the filler contains hydroxyl. The preparation method of the multi-dimensional filler comprises the following steps: dispersing filler comprising at least two different dimensions into a solvent, and carrying out condensation reaction to obtain the multi-dimensional filler. The multi-dimensional filler can be used for preparing a rubber composite material, and the prepared multi-dimensional filler rubber composite material can be applied to tires. The prepared multi-dimensional filler is better in compatibility and dispersity, when the rubber composite material is prepared, the dispersity of the multi-dimensional filler in a rubber matrix can be effectively improved, the temperature rise and rolling resistance of the composite material are effectively reduced, and the wet skid resistance of the composite material is improved.

This invention relates to the field of rubber product technology, and provides a rubber composition and a rubber tire. The rubber composition comprises: 5-70 phr of natural rubber, 10-40 phr of light butadiene rubber, 1-70 phr of high cis-conjugated diene polymer, 1-20 phr of precipitated silica, 1-15 phr of silane coupling agent, 30-50 phr of general-purpose rubber carbon black, 1-10 phr of processing oil, 7-20 phr of resin, 3-6 phr of processing aid, 1-6 phr of activator, 1-6 phr of vulcanizing agent, and 1.5-5.5 phr of accelerator. The rubber composition includes one or both of light butadiene rubber and high cis-conjugated diene polymer. The rubber composition provided in this application, when applied to the bead of a rubber tire, exhibits excellent fatigue and tear resistance properties, extending the tire's service life.

The invention relates to the field of material and rubber processing application, and discloses a rubber composition and application thereof, vulcanized rubber and a preparation method and application thereof. The rubber composition comprises 60-100 parts by mass of butadiene styrene rubber, 0-40 parts by mass of butadiene rubber, and relative to 100 parts by mass of rubber, 5-35 parts by mass of a plasticizer, 50-100 parts by mass of white carbon black, 4-10 parts by mass of a coupling agent, 2-8 parts by mass of a white carbon black dispersing agent, 0-30 parts by mass of carbon black, 2-5 parts by mass of an anti-aging agent, 3-5 parts by mass of a vulcanizing aid and 3-5 parts by mass of an activating agent. Wherein the styrene butadiene rubber is polar group modified styrene butadiene rubber, and the average number of polar groups contained in each molecular chain is not less than 3. When the vulcanized rubber prepared from the rubber composition is used in tires, the vulcanized rubber has good mechanical strength, low rolling resistance, high wet skid resistance and wear resistance.

The invention belongs to the technical field of motorcycles, and mainly relates to a front mudguard mounting structure of a cross-country motorcycle, which comprises a bracket mounting plate arranged at the lower part of a steering column assembly of the motorcycle, the support mounting plate is of a polygonal plate structure, and turnup lug plates bent by 90 degrees are arranged at the two ends of a panel of the support mounting plate. A mounting hole is further formed in the flanging lug plate; projection welding nuts which are uniformly distributed are arranged at four corners of the top of the plate surface of the bracket mounting plate; step counter bores which are symmetrically arranged are also formed among the projection welding nuts; the bottom of the support installation plate is further provided with an installation auxiliary plate assembly connected with the support installation plate. By the adoption of the support mounting plate structure, a supporting system with the dynamic buffering capacity is constructed, the overall rigidity and connection stability of the front fender mounting structure are remarkably improved, the loosening risk is reduced, the production and manufacturing cost is reduced, the disassembly and replacement efficiency during maintenance is improved, and the service life of the front fender mounting structure is prolonged. And double benefits of function improvement and process optimization are realized.

The utility model discloses a kind of oil furnace method soft carbon black production reactors, including reactor cavity, multiple raw material oil oil gun spray system being arranged at the oil inlet end of reactor cavity and the pressure regulating pipeline of another end;Tangential air pipe is provided on the lateral wall outside reactor cavity;Oil gun spray system includes the feed panel of multiple raw material oil guns being arranged, and raw material oil gun is equipped with axial combustion air sheath on the side of sleeve;Raw material oil is sprayed into reactor cavity by raw material oil gun;Axial combustion air enters reactor cavity from axial combustion air sheath place;Tangential wind enters reactor cavity from tangential air pipe place;Powdered carbon black generated inside reactor cavity is discharged after rising to pressure regulating pipeline with carbon black flue gas.The raw material oil gun of axial combustion air sheath is developed, and then large-size reactor is used again, and multiple raw material oil gun system and the design of tangential / axial wind are matched, more flexible and adjustable perfect spray are provided, the problem of screen residue after coking is solved, and primary particle is made larger.

The present application relates to the technical field of composite materials, in particular to a sidewall rubber composition, a sidewall rubber and a tire. The sidewall rubber provided by the present application contains an environmentally friendly bio-based itaconate rubber, which is used to replace natural rubber or butadiene rubber in the traditional sidewall formula in equal amount, thereby reducing the dependence on petrochemical raw materials, being conducive to energy saving and carbon reduction, and the sidewall rubber composite obtained at the same time has excellent physical and mechanical properties, in particular has outstanding fatigue resistance and aging resistance, and has low heat generation and low rolling resistance, and other basic mechanical properties also meet the requirements. In addition, the processing technology of the sidewall rubber is simple, and the requirement for equipment is low. Experiments show that the sidewall rubber with high fatigue resistance, low compression heat generation and low rolling resistance is successfully prepared, wherein the sidewall rubber prepared by using aromatic oil and petroleum resin as plasticizer has a flex fatigue resistance of more than 5 million times, and the compression heat generation can be reduced to below 10 DEG C.