46results about How to "Large room for adjustment" patented technology

The invention relates to a residual heat recovery system of sewage water of a coke dry quenching boiler. The system is characterized in that a sewage water heat exchanger is additionally arranged, desalting water which is delivered to an auxiliary coal saver by a water feed pump of a deaerator is used as a cooling medium to exchange heat with the sewage water nearby, and then the heat-exchanged desalting water is delivered to the deaerator to be deaerated. The system has the advantages that the problem of quantity distribution of water entering the heat exchanger and the auxiliary coal saver is avoided, and the operation and the control are convenient; the temperature of the desalting water entering the heat exchanger is minimum, the heat exchange temperature difference is high, and the heat recovery effect is good; the temperature of air at an inlet of the coke dry quenching boiler is controlled to 115 DEG C to 135 DEG C, and the temperature of actual running is controlled to about 125 DEG C and has a space of 10 DEG C from the maximum temperature, so the adjusting capability is high; and in addition, the quantity of circulating air is higher, so the temperature of the water entering the auxiliary coal saver is raised by about 8 DEG C in comparison with the temperature of the previous arrangement, the effect on the temperature of circulating air is little, and the running parameters of a coke dry quenching groove and the boiler are controlled within the specified range.

The invention provides a cantilever beam type vibration absorber with adjustable frequency. The cantilever beam type vibration absorber comprises a base, a cantilever beam and a mass disc, the lower end of the base is fixed to vibration equipment, through holes are formed in the upper end of the base and the mass disc, internal threads are arranged in the through holes, external threads matched with the through holes are arranged on the cantilever beam, the cantilever beam is arranged in the through hole of the base and the through hole of the mass disc through the external threads, fixed nuts are arranged at the two ends of the through hole of the base and fix the position of the cantilever beam and the base, adjusting nuts are arranged at the two ends of the through hole of the mass disc and limit the relative position of the cantilever beam and the mass disc, the adjusting nuts are adjustable, that is, the relative position of the mass disc and the cantilever beam is adjustable. The vibration absorption frequency of the vibration absorber can be flexibly adjusted, and the adjustable scope is wide. Parts are easy to machine and replace. Compared with an electromagnetic type unable vibration absorber and an electrodynamic type tunable vibration absorber, the electromagnetic leakage phenomenon is avoided. The cantilever beam type vibration absorber is simple in structure, stable in work and easy to mount.

The present invention the method of forming mesoporous metal oxide, mixed metal oxide and metal phosphate microballoon through synthesizing small mesoporous carbon ball with mesoporous silicon microballoon as mother body, perfusing the mixture of metal alkoxide, metal chloride and phaophate, drying and roasting. The mesoporous metal oxide, phosphate, etc. have important uses in catalysis, adsorption and other fields owing to their high specific surface area, nanometer level pores, great amount of active components on the pore wall and other features. Through said process, serial mesoporous microballoons including titania, zirconia, alumina, mixed titanium-zirconium oxide, mixed titanium-silicon oxide, zirconium phosphate, titanium phosphate, aluminum phosphate, tin phosphate and ferric phosphate may be synthesized.

The invention provides a solution polymerized styrene-butadiene rubber (SSBR) composition, a preparation method thereof, and a vulcanized rubber thereof. The solution polymerized styrene-butadiene rubber composition comprises blended modified rubber component and solution polymerized styrene-butadiene rubber. Calculated according to the weight of solution polymerized styrene-butadiene rubber as 100 parts, the composition comprises 1-70 parts of the modified rubber component. The modified rubber component comprises uncrosslinked rubber and rubber particles with crosslinked structures, which are dispersed in the uncrosslinked rubber. The rubber particles with crosslinked structures are nitrile rubber particles with an average particle size of 50-200nm and a gel content of 60wt% or higher. The uncrosslinked rubber is styrene-butadiene rubber. A weight ratio of the rubber particles with crosslinked structures to the uncrosslinked rubber is 80:20-30:70. The wet skid performance and wear resistance of the vulcanized rubber of the solution styrene-butadiene rubber composition can both be improved; the vulcanized rubber has low rolling resistance, and can be used for preparing high-efficiency automobile tread rubber.

The invention provides an emulsion polymerized styrene-butadiene rubber composition, a preparation method thereof, and a vulcanized rubber thereof. The emulsion polymerized styrene-butadiene rubber composition comprises blended modified rubber component and emulsion polymerized styrene-butadiene rubber. Calculated according to the weight of emulsion polymerized styrene-butadiene rubber as 100 parts, the composition comprises 1-70 parts of the modified rubber component. The modified rubber component comprises uncrosslinked rubber and rubber particles with crosslinked structures, which are dispersed in the uncrosslinked rubber. The rubber particles with crosslinked structures are nitrile rubber particles with an average particle size of 50-200nm and a gel content of 60wt% or higher. The uncrosslinked rubber is styrene-butadiene rubber. A weight ratio of the rubber particles with crosslinked structures to the uncrosslinked rubber is 80:20-30:70. The rolling resistance, wet skid performance and wear resistance of the vulcanized rubber of the emulsion styrene-butadiene rubber composition can be improved. The vulcanized rubber can be used for preparing high-efficiency automobile tread rubber.

The invention relates to a multivariable interval control method for a greenhouse environment system, is mainly applied to a multivariable control system for greenhouse production and replaces a traditional point control target with an interval control target through relaxing target control precision of environment factors. The method comprises steps that 1), controller parameters are initiated, and greenhouse environment factor control target intervals are set; 2), the environment factors such as indoor humiture and CO2 concentration are acquired through a sensor; 3), the acquired environment factors are compared with those of a controlled target control interval, and control deviation can be acquired by employing a control deviation processing algorithm; and 4), feedback control is carried out by the controller according to control deviation, the larger control deviation, the stronger the control effect is, through adjustment carried out by an actuating structure, the greenhouse environment multivariable interval control target is realized. According to the method, not only can a problem of no-solution limit caused by strong coupling among the factors of the greenhouse environment be effectively solved, but also wide freedom is provided for controller economy optimization.

The invention relates to a plane layout used for replacing large planes, a preparation method thereof and an SPECT / CT (single photon emission computed tomography / computed tomography) dual-mode biological imaging system using the plane layout as a rotating platform. The plane layout comprises a central datum part and a plurality of cantilevers respectively installed on the central datum part, wherein the central datum part and the cantilevers are respectively provided with installing fitting surfaces fit with each other; a working plane is arranged in front of each cantilever; and the working planes are arranged in a same plane or are respectively arranged in a plurality of planes parallel with each other. The plane layout has extremely high precision, the end face runout of the plane layout with meter-scale radial dimension can not exceed + / -0.002mm and the plane layout has simple production cost, low cost, light weight, high reliability and strong universality, moves stably and is easy to control in start and stop. The corresponding SPECT / CT dual-mode biological imaging system has higher geometric precision, imaging precision and imaging definition.

The invention discloses a device for quantificationally regulating the water level of constructed wetlands. The device comprises a wetland drain-pipe, a water level regulating casing pipe and a water distribution trough, wherein the constructed wetland drain-pipe is arranged on the water distribution trough; the water level regulating casing pipe is sleeved on the drain pipe; and a sealing pad is arranged at the place where the drain pipe is sleeved with the water level regulating casing pipe. With the adoption of a casing pipe type water level regulating device, a communicator is formed between the drain pipe and the constructed wetland; the water in the constructed wetland is drained into the water distribution trough; when the water level regulating casing pipe is well positioned, the water in the wetland is higher than the height of the water outlet of the water level regulating casing pipe, the water flows out from the water outlet of the water level regulating casing pipe, then the water in the wetland is kept still the same as the height of the water level regulating casing pipe. As the drain pipe is provided with mark scales, the water level of the constructed wetland is the sum of the length of the casing pipe and the scale of a vertical tube. Therefore, the water level of the wetland can be regulated quantificationally by regulating the position of the casing pipe.

The invention provides a converter bottom structure with multi-point rider brick deploying and controlling and a building method of the converter bottom structure. The converter bottom structure comprises a converter bottom shell. A permanent magnesite brick layer is built in the converter bottom shell, converter bottom part work layers are symmetrically built in a cross, and then magnesia carbon bricks are adopted to flatly build pressing edge part work layers round the outer edges of the converter bottom part work layers. When the pressing edge part work layers are built, four endpoint positions corresponding to the cross axes of the converter bottom part work layers respectively adopt magnesia carbon rider bricks to build main rider brick areas. The inner parts of the pressing edge part work layers between every two main rider brick areas respectively adopt the magnesia carbon rider bricks to build at least one auxiliary rider brick area. One side of each magnesia carbon rider brick is an inclined plane, and the inclined plane is in tight contact with the outer surface of each magnesia carbon brick of the outermost ring of the converter bottom part work layers in the building process. The converter bottom structure with multi-point rider brick deploying and controlling combines the advantages of cross building, also overcomes the disadvantages of the cross building, and has a wide popularization and application value.

The invention discloses a novel automotive air conditioner with a photocatalyst function. The novel automotive air conditioner comprises a device shell, a functional circuit and air conditioner grids, wherein the air conditioner grids are arranged on the surface of the device shell. The novel automotive air conditioner is characterized in that a containing box for storing a photocatalyst air purifying liquid is further arranged on the device shell, wherein the photocatalyst air purifying liquid is a liquid spray agent and is prepared from nanometer titania photocatalysts; an atomizing nozzle is further arranged on the containing box and extends to the bottom of the containing box through a guide pipe; the nanometer titania photocatalysts include nanometer titania, nanometer mineral crystal powder, diatomite, tourmaline and polysiloxane clathrate. As the spray agent used in the novel automotive air conditioner is in a moving free state, can be rapidly spread and has the characteristics of large purifying space and user-adjustable scope, the noxious and harmful gases in the air of an automobile can be rapidly and effectively degraded, and the novel automotive air conditioner has the functions of deodorization, mould proofing and air purification and has no toxicity and secondary pollution.

The invention belongs to the technical field of numerical control machine tools and relates to a numerical control full-automatic machine tool special for cams. A horizontal guide rail arranged on the front side of a base is provided with a workpiece fixture capable of moving along the horizontal guide rail; a longitudinal guide rail arranged on the back side of the base is provided with a headstock; a vertical guide rail arranged on the front side of the headstock is provided with a head seat; a cantilever is fixedly arranged on the lower side of a vertical shaft which is vertically arranged on the front side of the head seat; a horizontal guide rail arranged on the cantilever is provided with a motor; an output shaft of the motor is provided with a cutter; all kinematic pairs are driven to move by motors; and a controller controls all motors to sequentially act. The numerical control full-automatic machine tool special for cams has the advantages that a numerical control technology and three-dimensional machining are adopted, the machined cams have smooth and continuous moving tracks and arcs, the yield is high, the production efficiency is high, the production cost is low, and the machine tool is suitable for machining cams with various complex surfaces and tracks.

The invention discloses a method for low-temperature catalytic ozone treatment of high-humidity organic waste gas, and belongs to the field of waste gas treatment. According to the method, firstly, high-humidity organic waste gas is dehumidified by a water absorbent, the dehumidified organic waste gas is properly heated by a heating device and then is mixed with ozone, and a degradation reaction is carried out in a catalyst bed layer, so that direct contact between a large amount of water and a catalyst is avoided, and the degradation efficiency of the organic waste gas, the stability of the catalyst are improved, and the long-term stable operation of the device is ensured; and meanwhile, the reaction tail gas with a certain temperature is used for regenerating the water absorbent, so that the heat is fully utilized, and the energy consumption is reduced.

The invention discloses a pilot production wellhead platform. The pilot production wellhead platform comprises a topside module, a plurality of platform leg pillars, and a plurality of steel pile foundations, wherein the quantity of the platform leg pillars and the quantity of the steel pile foundations are equal, the topside module comprises a main deck, a production deck and a well drilling deck which are sequentially arranged from the bottom to top; the upper ends of the platform leg pillars are connected with the main deck, the steel pile foundations penetrate through the platform leg pillars and extend out of the platform leg pillars, Christmas trees are arranged on the production deck, and the Christmas trees are connected with drill conductors; after penetrating through the main deck, thedrill conductors extend downwards continuously; a living building and a helicopter deck are arranged on the right side of the well drilling deck, and the helicopter deck is arranged at the top of the living building; a passage and a slide track used for the sliding of a drilling machine or a workover rig are reserved on the left side of the well drilling deck. According to the pilot production wellhead platform, complex oil pools with less development experience can be exploited efficiently and quickly by usingless engineering investment cost, and a relatively large adjustment scopeis provided in the process of exploiting; meanwhile, the oil field development risk of the complex oil pools can be controlled effectively, so that the pilot production wellhead platform has a wide application prospect in development of such oil fields.

The invention provides a modified rubber master batch and a preparation method thereof, an oil-extended solution-polymerized styrene-butadiene rubber composition, and a preparation method and a vulcanized rubber thereof. The modified rubber master batch comprises an uncrosslinked rubber and crosslinked-structure nitrile-butadiene rubber particles dispersed in the uncrosslinked rubber, wherein the average particle size of the nitrile-butadiene rubber particles is 50-200 nm; the gel content is 60 wt% or higher; the uncrosslinked rubber is styrene-butadiene rubber; and the weight ratio of the crosslinked nitrile-butadiene rubber particles to the uncrosslinked rubber is more than 20:80 and less than or equal to 80:20. The oil-extended solution-polymerized styrene-butadiene rubber composition comprises 100 parts by weight of modified rubber master batch and 1-70 parts by weight of oil-extended solution-polymerized styrene-butadiene rubber which are blended. The vulcanized rubber of the oil-extended solution-polymerized styrene-butadiene rubber composition has the advantages of higher slippery resistance, higher abrasion resistance and lower rolling resistance, and can be used for preparing a high-performance car tread rubber.

The invention provides a monoepoxy material. The monoepoxy material has the following structural formula. The invention also provides a preparation method of the monoepoxy material. The compound not only can be used as an oily active toughening agent, but also can be used as a water-based epoxy active toughening agent, and has the characteristics of good stability, excellent heat resistance, goodflexibility and good adhesive force. The monoepoxy material is also a good emulsifier, and because the product does not contain environmental pollution components such as nonylphenol and the like, theadjustable margin is large, so that the product has a good application prospect.

The invention discloses a supplementary filling treatment method for a sleeve grouting defect under a bent-pipe-shaped slurry outlet hole channel. The method comprises the steps that the projection position of a sleeve on the surface of a component is positioned, and an air exhaust hole channel is drilled in the projection position 5-10mm below a slurry outlet of the sleeve; the position of the upper surface of a grouting material in the sleeve is determined through grouting fullness detection, and a grouting hole channel is drilled in the position above the upper surface of the grouting material; the air exhaust hole channel is reamed, and an L-shaped external extension pipe is mounted; a grouting pipe is inserted into the outer wall of the sleeve through the grouting hole channel and is in butt joint with the drilling position of the wall of the sleeve; and an air exhaust pipe is inserted into a port of a vertical section of the L-shaped external extension pipe, slurry supplementary filling is started, and supplementary filling is completed. According to the supplementary filling treatment method, damage to the sleeve is small, and the supplementary filling treatment effect is excellent.

The invention discloses a technical scheme of a precision quenching device for a weld joint area. The technical scheme includes that the precision quenching device for the weld joint area comprises a base seat, a base frame arranged on the base seat and a quenching spray head, and further comprises a carrier roller assembly and a quenching device assembly. The precision quenching device for the weld joint areas lifts a workpiece to be quenched to a quenching station through liftable jacking hubs, adjusts the distance from the quenching spray head to a workpiece weld joint through the liftable base frame, adjusts angles of the quenching spray head through a rotatable quenching spray pipe so as to enable the quenching spray head to face all directions of the workpiece weld joint, and thereby achieves precision quenching for the weld joints in different types of pipe materials in a large pipe diameter range, and effectively improves precision and quenching effects of a quenching process.

The invention discloses a process gas purification treatment method. A gas absorption system consists of multiple stages of absorption systems, wherein each stage of absorption system consists of a certain number of absorption devices; the numbers of the absorption devices of different stages of absorption systems are different, and the styles are the same or different; absorption liquid is pushed reversely according to gas flow; all the absorption devices of each stage of absorption system are connected in series with one another through balance communicating pipes; liquid levels in circulating tanks of all the absorption devices keep a certain liquid level difference in the flowing direction of the absorption liquid so as to take the liquid level difference as power for forwards pushing absorption circulating liquid; clean liquid enters from a purified gas outlet end, and liquid is discharged from a process gas inlet end; the liquid discharging concentration is adjusted according to a liquid feeding amount; the liquid in each circulating tank is automatically balanced and adjusted through an absorption liquid output end adjustment valve and an absorption liquid inlet end adjustment valve. The process gas purification treatment method effectively solves the difficulty which cannot be solved by a conventional absorption device; the absorption efficiency is improved, and the energy consumption is reduced; continuous and stable operation can be realized; the application and popularization prospect is wide.

The invention discloses an inlet electrode sealing device for a vacuum furnace. The inlet electrode sealing device comprises a furnace shell and an inlet electrode, wherein the inlet electrode is arranged in the furnace shell; a first flange is arranged on the furnace shell; the first flange is connected with a second flange and a third flange through fasteners; a first O-shaped rubber sealing ring is arranged on end faces between the first flange and the second flange; and a second O-shaped rubber sealing ring is arranged at a clearance among the inlet electrode, the second flange and the third flange. By utilizing a flange fastening device structure, the inlet electrode sealing device for the vacuum furnace can guarantee the stability of the inlet electrode, any displacement is avoided, and the sealing effect is good; when the inlet electrode sealing device is installed, the adjustment range is large; the inlet electrode sealing device is easily connected with a graphite transition electrode; and even if an insulation sleeve is deformed, the first O-shaped rubber sealing ring and the second O-shaped rubber sealing ring cannot be damaged, so that the requirements for mounting and use are met effectively, and the quality of products is improved.

The invention relates to a low-clearance tunnel cantilever positioning device which is formed by an arch flat cantilever 1, a positioning tube 2, an inclined cantilever 3, a catenary seat 6, a positioning support 7 and a limiting positioner 8. The positioning tube 2 is fixed at the lower part of the horizontal section of the arch flat cantilever 1; the upper end of the inclined cantilever 3 is hinged to the lower part of the inner end of the positioning tube 2; the upper end of the positioning support 7 is arranged on the positioning tube 2; the limiting positioner 8 is arranged at the lower end of the positioning support 7; and the catenary seat 6 is arranged on the horizontal section of the arch flat cantilever 1. According to the invention, the inclined arm section of the arch flat cantilever is clung to the wall of a tunnel to be mounted, so that the installation and fixing point of the flat cantilever is shifted down, and thus, the cantilever is integrally close to the wall of the tunnel to the greatest degree along the horizontal direction. The low-clearance tunnel cantilever positioning device has a compact structure, saves the installation space, completely meets the requirement of a low-clearance tunnel for the small-space installation and can meet the boundary requirement whether on the straight line section or the curved section of the low-clearance tunnel.

The invention relates to a connector of an electrical appliance. The connector of the electrical appliance comprises an elastic piece body and an inner core, wherein the elastic piece body comprises an elastic piece head and an elastic piece base body, the elastic piece head and the elastic piece base body are hollow and coaxial, the elastic piece head is composed of a plurality of sector-shaped pieces which are obtained in the mode of even division through a circular ring, the inner surface of the elastic piece head is a conical surface, and radial expansion or contraction of the sector-shaped pieces on the elastic piece head can be achieved through axial displacement of the inner core in the elastic piece body. The connector of the electrical appliance has the advantages that insertion and pulling force is not needed, field installation of the electrical appliance can be achieved rapidly, conveniently, safely and firmly, manufacturing is convenient, and the service life is long.

The invention discloses a pilot production wellhead platform. The pilot production wellhead platform comprises a topside module, a plurality of platform leg pillars, and a plurality of steel pile foundations, wherein the quantity of the platform leg pillars and the quantity of the steel pile foundations are equal, the topside module comprises a main deck, a production deck and a well drilling deck which are sequentially arranged from the bottom to top; the upper ends of the platform leg pillars are connected with the main deck, the steel pile foundations penetrate through the platform leg pillars and extend out of the platform leg pillars, Christmas trees are arranged on the production deck, and the Christmas trees are connected with drill conductors; after penetrating through the main deck, thedrill conductors extend downwards continuously; a living building and a helicopter deck are arranged on the right side of the well drilling deck, and the helicopter deck is arranged at the top of the living building; a passage and a slide track used for the sliding of a drilling machine or a workover rig are reserved on the left side of the well drilling deck. According to the pilot production wellhead platform, complex oil pools with less development experience can be exploited efficiently and quickly by usingless engineering investment cost, and a relatively large adjustment scopeis provided in the process of exploiting; meanwhile, the oil field development risk of the complex oil pools can be controlled effectively, so that the pilot production wellhead platform has a wide application prospect in development of such oil fields.

The invention relates to a low-clearance tunnel cantilever positioning device which is formed by an arch flat cantilever 1, a positioning tube 2, an inclined cantilever 3, a catenary seat 6, a positioning support 7 and a limiting positioner 8. The positioning tube 2 is fixed at the lower part of the horizontal section of the arch flat cantilever 1; the upper end of the inclined cantilever 3 is hinged to the lower part of the inner end of the positioning tube 2; the upper end of the positioning support 7 is arranged on the positioning tube 2; the limiting positioner 8 is arranged at the lower end of the positioning support 7; and the catenary seat 6 is arranged on the horizontal section of the arch flat cantilever 1. According to the invention, the inclined arm section of the arch flat cantilever is clung to the wall of a tunnel to be mounted, so that the installation and fixing point of the flat cantilever is shifted down, and thus, the cantilever is integrally close to the wall of the tunnel to the greatest degree along the horizontal direction. The low-clearance tunnel cantilever positioning device has a compact structure, saves the installation space, completely meets the requirement of a low-clearance tunnel for the small-space installation and can meet the boundary requirement whether on the straight line section or the curved section of the low-clearance tunnel.

An electrothermal water jug thermostat has two parts of a coupling assembly and a main body assembly. The coupling assembly has a casing, a wiring lug mounted in the casing, a ground lug, a movable contact spring, and an L-N pole contact piece, the movable contact spring being fitted with a support. The main body assembly has a main body, a temperature control strip mounted in the main body, a jump bar mounted on the main body, an L-N pole piece and a ground lug. The temperature control strip has a low temperature strip fitted with a contact of the jump bar and a high temperature strip mounted on a base plate. The base plate is connected with upside of the main body, and is in contact with the ground lug of the thermostat. The ground lug connects the L-N pole wiring lug of the thermostat, and the L-N pole wiring lug is fitted with the L-N pole piece. The main body assembly also has an L pole copper coil and an N pole copper coil mounted at inner-outer wall of a contact pin, an L-N pole contact piece and a push rod mounted in the contact pin jack wall of the casing, a movable contact spring in contact with the push rod upward, and a small grounded shaft mounted in the cylindrical contact pin and fitted with the ground lug.

The invention discloses a stone material aluminum honeycomb composite slab suspended ceiling construction method based on T-shaped and Z-shaped hanging parts. A construction stone material aluminum honeycomb composite slab suspended ceiling comprises multiple columns of stone material aluminum honeycomb composite slabs, a column of T-shaped hanging parts is arranged between every two adjacent columns of stone material aluminum honeycomb composite slabs, each T-shaped hanging part is clamped between left and right Z-shaped hanging parts, a column of outer side hanging parts is arranged on the outer side of each column of outer side compound slabs, and a column of pre-embedded bolts for fixing outer side hanging parts or Z-shaped hanging parts is arranged on the left and right sides of each stone material aluminum honeycomb composite slab respectively. The stone material aluminum honeycomb composite slab suspended ceiling construction method comprises the steps of 1 suspended ceiling keel installation, 2 T-shaped part installation, 3, stone material aluminum honeycomb composite slab installation and 4 joint filling treatment. The stone material aluminum honeycomb composite slab suspended ceiling construction method includes simple steps, is reasonable in design, simple and convenient to construct, high in working efficiency and good in construction effect, the stone material aluminum honeycomb composite slab suspended ceiling construction process can be simply, conveniently and rapidly completed, the input cost is low, and the construction quality is easy to ensure.

The invention provides a modified rubber master batch and a preparation method thereof, a polybutadiene rubber composition, and a preparation method and a vulcanized rubber thereof. The modified rubber master batch comprises an uncrosslinked rubber and crosslinked-structure nitrile-butadiene rubber particles dispersed in the uncrosslinked rubber, wherein the average particle size of the nitrile-butadiene rubber particles is 50-200 nm; the gel content is 60 wt% or higher; the uncrosslinked rubber is styrene-butadiene rubber; and the weight ratio of the crosslinked nitrile-butadiene rubber particles to the uncrosslinked rubber is more than 20:80 and less than or equal to 80:20. The polybutadiene rubber composition comprises 100 parts by weight of polybutadiene rubber and 1-70 parts of modified rubber component which are blended. The vulcanized rubber of the polybutadiene rubber composition has the advantages of higher slippery resistance, obviously improved rolling resistance and favorable wear resistance, and can be used for preparing a high-performance car tread rubber.