55results about How to "Improve power transmission performance" patented technology

The invention discloses a planetary gear train to be used for a multi-gear transmission. At least nine available forward gears and at least one available reverse gear can be obtained. The planetary gear train comprises a first planet row, a second planet row, a third planet row and a fourth planet row. Each planet row comprises a sun gear, a planet carrier and a gear ring. Components and connection members of the planet rows can form seven rotation elements. A gear shifting component comprises two clutches and four brakes. The clutches are arranged among the selected rotation elements of the rotation elements, and the brakes are arranged between the selected rotation elements of the rotation elements and fixing parts. The planetary gear train has more gears and optimal speed ratio, the power transmission performance and the fuel economy of the cars can be improved apparently, and the planetary gear train is short, compact in overall design, capable of meeting requirements of cars for transmission durability, power transmission efficiency, size, costs and the like well. The invention further discloses an automatic transmission with the planetary gear train.

Disclosed in the invention is a graphene composite optical cable comprising a twisted core, a metal protection layer coating the outside of the twisted core, and an outer sheath layer coating the outside of the metal protection layer. The twisted core includes a center reinforced element arranged at the center of the twisted core, cable cores, and large-diameter fillers, wherein the cable cores and the large-diameter fillers are distributed uniformly at the circumferential surface of the center reinforced element by a staggered way; and small-diameter fillers and optical cable cores are arranged at the externally tangent portions of the cable cores and the large-diameter fillers. And the small-diameter fillers and optical cable cores are arranged at the externally tangent portions of the cable cores and the large-diameter fillers by a staggered way; and the cable cores, the large-diameter fillers, the small-diameter fillers, and the optical cable cores are twisted along the circumferential direction of the center reinforced element. The provided graphene composite optical cable has the following beneficial effects: the design is reasonable; the structure is simple; the power transmission efficiency and the carrying capacity are improved; the construction and maintenance costs are lowered; and the cable can be popularized conveniently.

A steel belt type mining inclined roadway travel aid structurally comprises a head, a tail and a stepless steel belt. A steel belt pulley is arranged on the head, a driven pulley is disposed on the tail, and the stepless steel belt is connected between the driven pulley and the steel belt pulley, so that the driven pulley, the steel belt pulley and the stepless steel belt form the integral steel belt type mining inclined roadway travel aid. A rope clamping bar is arranged on the steel belt, the end of the rope clamping bar is inserted into a hole of the steel belt, and accordingly the steel rope bar is connected with the steel belt in a clamped manner.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving power from an engine, an output shaft outputting power changed in speed, a first planetary gear set including first, second, and third rotating elements, a second planetary gear set including fourth, fifth, and sixth rotating elements, a third planetary gear set including seventh, eighth, and ninth rotating elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotating elements, and six control elements disposed between the rotating elements, and disposed at positions where the rotating elements are selectively connected with a transmission housing.

The present invention relates to a toothed belt driving device for bicycle, in which, in drive state, the pulley groove portion of a driven pulley is in surface contact with a portion of a surface of the belt tooth portion, this portion in surface contact is present in a range positioned closer to a tooth root portion than a reference circle, the maximum value of the shortest distance between the pulley groove portion of the driven pulley and the surface of the belt tooth portion opposite to the traveling direction of the belt is 10% or more and 18% or less of the tooth pitch, a groove depth of the driven pulley is greater than the tooth height of the belt tooth portion, and the difference therebetween is 5% or more of the tooth height.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving power from an engine, an output shaft outputting power changed in speed, a first planetary gear set which has first, second, and third rotating elements, a second planetary gear set which has fourth, fifth, and sixth rotating elements, a third planetary gear set which has seventh, eighth, and ninth rotating elements, a fourth planetary gear set which has tenth, eleventh, and twelfth rotating elements, and six control elements disposed between the rotating elements, and disposed at positions where the rotating elements are selectively connected to a transmission housing.

The embodiments of the invention provide a polymer degassing apparatus, and belong to the degassing field in the petrochemical industry technology, wherein the mass transfer and heat transfer effect of the high-viscosity polymer during the degassing process can be increased with the polymer degassing apparatus so as to increase the degassing effect of the polymer. The polymer degassing apparatus comprises a heat exchange device and a degassing tank arranged below the heat exchange device, wherein the degassing tank is sequentially provided with a flow collection member and a rotation member from top to bottom, the side wall between the flow collection member and the rotation member is provided with a flash evaporation steam outlet, the flow collection member is used for collecting the polymer from the heat exchange device onto the rotation member, and the rotation member is used for carrying out rotary dispersion on the polymer so as to remove the gas bubbles from the polymer. The polymer degassing apparatus of the present invention can be used for the high-viscosity polymer degassing process.

The invention discloses an axle protection structure, which comprises an axle, a fixed ring, a protective tube, a filling layer and a connecting flange; One side of the shaft extends axially outward to form a plurality of fixed rods; the fixed rods on the two fixed rings are located on the sides of the two fixed rings away from each other; the connecting flange is sleeved on the axle, and a through hole is opened on the connecting flange , the fixed rod goes through the through hole; the connecting flange is fixed on the fixed ring through the nut threaded with the fixed rod; the protective tube is set on the axle, and the two ends of the protective tube are respectively fixedly connected with the two connecting flanges; Between the outer surface of the axle and the inner surface of the protection cylinder, the filling layer is wear-resistant rubber. The invention can slow down the loss of driving force of the vehicle after the axle breaks, and prevent the fragments produced by the breakage of the axle from penetrating the fuel tank.

An automatic transmission for a vehicle may include an input shaft; an output shaft; first to fourth planetary gear sets and six control elements which are disposed between the rotating elements, and disposed at portions where the rotating elements are selectively connected to a transmission housing, in which the input shaft is directly connected with the second rotating element, the output shaft is directly connected with the eleventh rotating element, the first rotating element is directly connected with the seventh rotating element, the sixth rotating element is directly connected with the transmission housing, the fourth rotating element is directly connected with the ninth rotating element, the eighth rotating element is directly connected with the tenth rotating element, and at least ten forward speeds and one reverse speed are implemented by operations of three control elements among the six control elements.

The invention relates to a positioning coupler. The positioning coupler comprises a left flange, a right flange, a brake wheel, a connecting clamping jaw and an elastic base body, wherein the left flange and the right flange are coaxially distributed, the left flange is connected with the right flange through the connecting clamping jaw, the outer side surface of the elastic base body abuts against the inner side surface of the connecting clamping jaw, and the left end surface and the right end surface of the connecting clamping jaw are connected with the left flange and the right flange to abut against the bottom of the clamping jaw, the brake wheel wraps outside the left flange, and the rear end surface of the connecting clamping jaw connected with the left flange is connected with the rear end surface of the brake wheel through a positioning bolt. According to the positioning coupler, on one hand, the structure strength and bearing capability can be effectively improved, and the power transmission capacity and stability are greatly improved; and on the other hand, the purpose of synchronous braking and speed regulation operation of the coupler and a shaft rod workpiece can be achieved, and the damage condition of the coupler structure caused by inertia during the running process of the coupler and the shaft rod workpiece can be effectively eliminated.

The invention relates to a transmission, and particularly relates to an eleven-gear transmission based on a planetary gear train. The eleven-gear transmission based on the planetary gear train solvesthe technical problem that an existing four-speed transmission and an existing six-speed transmission have limitations in the aspects of fuel economy, response power performance, stability and the like. The eleven-gear transmission based on the planetary gear train comprises a transmission shell and the planetary gear train. The planetary gear train comprises four planetary rows and seven gear shifting assemblies, wherein the four planetary rows and the seven gear shifting assemblies are arranged on the same shaft system; eight rotating bodies are formed among the four planetary row assembliesthrough connecting components such as rotating shafts; the gear shifting assemblies change the degree of freedom of the planetary gear train through clutches and brake; and different speed ratio transmission between an input shaft and an output shaft can be achieved through combination and separation of the different assemblies, and finally the gear shifting speed of at least eleven forward gearsand at least two reverse gears can be obtained. The eleven-gear transmission based on the planetary gear train has a more optimized speed ratio, and the power transmission performance and fuel economy of a vehicle are remarkably improved.

A powertrain may include an input shaft; a drive pulley and a driven pulley engaged to each other by a belt; a forward/backward switching mechanism provided to selectively switch a direction of power from the input shaft to the drive pulley by a plurality of friction members and transmit the power; a gear train provided to transmit the power of the input shaft to a rotation shaft of the driven pulley without passing through the drive pulley; and another friction member provided to interrupt a power transmission path of the gear train.