70 results about "Double planet" patented technology

The mixed power drive unit based on double planet ranks has one front planet rank and one rear planet rank. The front planet rank has a sun wheel P, a ring gear S, a planet carrier and a planet gear V; and the rear planet rank has a sun wheel Q, a ring gear T and a planet gear U. The mixed power drive unit has the connection of sun wheels P and Q, connection of front planet carrier and ring gear T, the connection of the internal combustion engine through two clutches separately to ring gear and the planet carrier, the connection of sun gear P and a motor, the connection of the planet carrier and gear H, the connection of sun gear Q and the motor, the connection of sun gears P and Q, the mesh of gear H to gear G, the connection of gear G and the output, the braking of brake C on ring gear S, and the braking of brake E on ring gear T. The present invention has the advantages of compact structure and less transmitting parts, stepless speed change function, etc.

The invention provides a double-motor double-planet-row dynamic coupling driving structure. A double-planet-row system consisting of a planet gear mechanism I 7 and a planet gear mechanism II 10 serves as a dynamic coupling device of a motor I 22 and a motor II 14; a brake I 6 is used for locking and unlocking a gear ring I 3; a brake II 11 is used for locking and unlocking a planet carrier II 17; a brake III 12 is used for locking and unlocking a sun wheel II 16. The double-motor double-planet-row dynamic coupling driving structure can be used for realizing multiple working modes including a double-motor separate drive mode, a double-motor rotation speed coupling drive mode and a double-motor torque coupling drive mode and can meet the different running requirements of vehicles.

A hybrid power transmission comprises double planet rows, a first motor, a second motor and a third clutch. The double planet rows include a first planet row and a second planet row, the first planet row comprises an outer gear ring, a first sun gear and a first planet gear, and the second planet row comprises a second outer gear ring, a second sun gear and a second planet gear; the first motor and the second motor are mounted on one side of the double planet rows, the first motor is connected with the first sun gear, and the second motor is connected with the second sun gear; the first planet gear and the second planet gear are meshed with each other and share a planet carrier; and one side of the third clutch is connected with the first sun gear, and the other side of the third clutch is connected with the second sun gear. The invention further provides a hybrid power transmission system comprising the hybrid power transmission. According to the technical scheme, energy loss is reduced, work efficiency of an engine and the motors is improved, and an automobile can be accelerated effectively.

The invention discloses low-viscosity heat conducting silicone grease. Composition of the low-viscosity heat conducting silicone grease comprises components of dimethyl silicone oil, heat conducting powder of class I, heat conducting powder of class II, a coupling agent and an auxiliary. A preparation method of the low-viscosity heat conducting silicone grease comprises steps as follows: step 1, the dimethyl silicone oil, the coupling agent and the auxiliary are added to a double-planet stirring machine to be mixed uniformly; step 2, the heat conducting powder of class II is added to a mixed liquid obtained in the step 1 and mixed uniformly; step 3, the heat conducting powder of the class I is added to a mixed liquid obtained in the step 2 and mixed uniformly; step 4, a mixed liquid obtained in the step 3 is sufficiently stirred and subjected to vacuum pumping and defoaming. The heat conducting silicone grease produced with the method has the characteristics of low viscosity, high heat conduction coefficient, low probability of sedimentation, low permeability, good long-term stability and the like.

The invention relates to a hybrid four-shaft transmission device, which comprises an outer gear ring, a planet carrier, a planet row and sun gears and is characterized in that: the planet row has a double-planet row structure consisting of a front planet row and a back planet row; the front planet row and the back planet row correspond to a sun gear respectively; a front row of planetary gears have small tooth widths and large reference circles; a back row of planetary gears have large tooth widths and small reference circles; the front row of planetary gears are meshed with the outer gear ring and a small sun gear so as to form a front row gear train; and the back row of planetary gears are meshed with the front row of planet gears and a large sun gear so as to form a back row gear train. A double-planet row four-shaft transmission device with a large transmission ratio between the sun gear of the back row gear train and the outer gear ring is realized.

The invention discloses a flame-retardant artificial quartz stone plate and a method for preparing the same. The flame-retardant artificial quartz stone plate comprises granular materials with the sizes of 0.075-5 mm, quartz powder with the size of 0.005-0.045 mm, colored pigment, silane coupling agents, unsaturated polyester resin, curing agents and flame retardants. The method includes premixing weighed quartz granules, weighed glass granules, the weighed flame retardants and the weighed silane coupling agents in double-planet stirring barrels to obtain premixed materials; mixing the premixed materials with one another to obtain first mixed materials, adding the quartz powder into the first mixed materials and mixing the quartz powder and the first mixed materials with one another to obtain mixed materials; feeding the mixed materials into dispersing machines, dispersing the mixed materials, then metering the mixed materials, feeding the mixed materials into distributing machines and distributing the mixed materials; carrying out vibration compression molding on the mixed materials by the aid of compression equipment under -0.1 Mpa vacuum conditions under the pressures of 50-200 t at the vibration frequencies of 30-55 Hz for the time of 60-600 s; feeding the mixed materials in solidifying equipment after vibration compression is carried out on the mixed materials and solidifying the mixed materials at the temperatures of 80-130 DEG C for the solidifying time of 30-180 minutes; placing the mixed materials at the normal temperature, completely cooling the mixed materials, then feeding the mixed materials in plate thickness defining machines to define the thicknesses of the mixed materials and then polishing the mixed materials by the aid of water-mill polishing equipment. The flame-retardant artificial quartz stone plate and the method have the advantage that excellent effects of enhancing the flame-retardant properties of artificial quartz stone products can be realized.

The invention relates to a wheel-side reducer with a brake for a bracket carrier which mainly comprises the brake, a double-planet reducer, a brake shell body, a brake shell, an inner bracket, a braking spring, a friction plate, a bearing, a spline shaft sleeve, a stop block, a distance sleeve, a round nut, an internal annular gear, an end cover gear ring, planet gears, a sun gear, an air permeable cap, an oil drain plug, an oil filling hole and a fixing block. An output end of a travelling mechanism adopts a brake plus reducer integrated design, the brake adopts totally closed wet-type braking, a spring ring comprises 30 small springs, the ring friction plate comprises 8 static friction plates and 9 dynamic friction plates, integral braking and hydraulic releasing are carried out, the spline shaft sleeve and the double-planet reducer are connected, the reduction is realized by a first-grade planet gear and a second-grade planet gear, the transmission speed ratio is 40 to 1, and the reducer and a travelling wheel are connected, thus driving the whole vehicle to run. The device has advanced design, compact structure, small volume, good heat dissipation, steady running and safe and reliable properties.

The invention discloses graphene-based waterborne gravure ink. The graphene-based waterborne gravure ink is prepared from components in percentage by mass as follows: 3%-10% of conductive filler, 0.5%-10% of waterborne resin, 2.5%-40% of water-soluble resin, 2.5%-40% of aqueous emulsion, 0.1%-1% of a dispersing agent, 1%-5% of auxiliaries and 44%-89.9% of an alcohols solvent. The invention further provides a preparation method. The preparation method comprises technological steps as follows: (1), graphene, the dispersing agent, conductive carbon black and waterborne resin are added to a double-planet type stirrer and mixed, a mixture is dispersed, and a pre-dispersion solution is obtained; (2), water-soluble resin, the aqueous emulsion, and the auxiliaries are added to the pre-dispersion solution and stirred uniformly, and a finished product is obtained. According to the graphene-based waterborne gravure ink, environmental pollution caused by traditional solvent type gravure ink is prevented, the waterborne gravure ink develops in order to achieve the advantages of being non-combustible and non-toxic, having less smell, high color emissivity, clear text and complete network and meeting the rapid printing requirement, and the application range is widened.

The invention discloses a double-planet double-output gear drive mechanism which comprises a bevel pinion, wherein the bevel pinion is connected with external motion and force; the bevel pinion is connected with a bevel gear wheel so as to form a first level right-angle cone gear drive mechanism, and the bevel gear wheel is connected with a first level sun wheel; the first level sun wheel, a first level planetary wheel, a first level annular gear and a first planet carrier are connected so as to form a first level planet gear mechanism, and the first level annular gear are fixedly connected with a second level sun wheel; the second level sun wheel, a second level planetary wheel, a second level annular gear and a second level planet carrier are connected so as to form a second level planet gear mechanism, and the second level planet carrier is fixed; the first level planet carrier is fixedly connected with the second level annular gear; and the motion and the force passes through the first level planetary wheel mechanism and then are shunted, one part is outputted through the first planet carrier, and the rest is outputted through the first level annular gear, the second level sun wheel, the second level planetary wheel and the second level annular gear. The gear drive mechanism provided by the invention has the advantages of improving the carrying capacity of a reducer, and decreasing the volume and the weight.

The invention discloses a double-planet row type oil and electricity series-parallel type hybrid power system. The double-planet row type oil and electricity series-parallel type hybrid power system aims at solving the problem that a big motor is needed to supply enough driving force in an existing series-parallel hybrid power vehicle. The double-planet row type oil and electricity series-parallel type hybrid power system comprises an engine, a front planet row, a back planet row, a first inverter, a super-capacitor, a second inverter, a second motor, a first motor and a front planet row output shaft. The front planet row is arranged at the left end of the front planet row output shaft in a sleeved mode, the first motor is arranged at the right end of the front planet row output shaft in a sleeved mode, the left end of the first motor is connected with a front planet row sun wheel button, the right end of the engine is connected with a front planet row gear ring cover in a keyed mode, the input end of the second motor is connected with the right end of the front planet row output shaft in a keyed mode, and the output end of the second motor is connected with a back planet row sun wheel in a keyed mode. The first motor is connected with the first inverter in a wire mode, the second motor is connected with the second inverter in a wire mode, the first inverter is connected with the super-capacitor in a wire mode, the second inverter is connected with the super-capacitor in a wire mode, and the first inverter is connected with the second inverter in a wire mode.

The invention discloses an energy recovery control method of a double-planet-row four-axis hybrid power system. The method comprises the following steps: an automobile enters a purely electric braking mode opened by a first brake if the automobile is in a purely electric operating mode before being braked and the first brake is in an open mode when the automobile is braked, the automobile enters a purely electric braking mode locked by the first brake if the automobile is in the purely electric operating mode before being braked and the first brake is in a locking state, the automobile enters a hybrid power braking mode opened by a second brake if the automobile is in a hybrid power operating mode and the second brake is in a starting mode, and the automobile enters a hybrid power braking mode locked by the second brake if the automobile is in the hybrid power operating mode and the second brake is in a locking mode. The method can select the corresponding braking mode according to different operating modes of the automobile before braking, and can avoid the situation of high rotating speed and low torque of a motor in the condition of high vehicle speed, thereby improving the energy recovery efficiency.

The invention discloses an electric driving system based on a double-planet-row two-gear transmission. The electric driving system comprises a shell, a driving mechanism, an output shaft, a double-planet-row gear system, a clutch and a clutch, the double-planet-row gear system comprises a first planet row and a second planet row, a first-planet-row sun gear is connected with a driving motor shaft, a first-planet-row planet carrier is fixedly connected with an output shaft, a first-planet-row inner gear ring is connected with a second-planet-row planet carrier, a second-planet-row sun gear is fixedly connected with the shell, the clutch can selectively connect the output shaft with a second-planet-row inner gear ring, and the brake can enable the second-planet-row planet carrier and the first-planet-row inner gear ring to rotate or brake at the same time; when a first gear is selected, the clutch does not work, and the brake works; when a second gear is selected, the clutch works, and the brake does not work. The electric driving system has few parts and is compact in structure, motor running efficiency is improved, and driving mileage of an electric vehicle is increased.

The invention discloses a clutch hydraulic control system for a double-planet-row confluence hydro-mechanical continuously variable transmission. The clutch hydraulic control system comprises a clutchcontrol system, a lubricating cooling system and an oil supply system. The oil supply system comprises an oil tank. Oil in the oil tank passes through a rough filter and then passes through a low-pressure large-flow gear pump and a high-pressure small-flow gear pump after. The low-pressure large-flow gear pump communicates with a first hydraulic clutch, a second hydraulic clutch and a third hydraulic clutch. An oil outlet of the high-pressure small-flow gear pump communicates with a precise filter, and the precise filter communicates with a first proportional pressure reducing valve, a secondproportional pressure reducing valve and a third proportional pressure reducing valve. The three proportional pressure reducing valves communicate with spring reset oil cylinders. The three hydraulicclutches are connected into a control oil way through the three spring reset oil cylinders. By means of the clutch hydraulic control system for the double-planet-row confluence hydro-mechanical continuously variable transmission, the structure is simpler, the size is reduced, the cost is reduced, the oil pressure is stably controlled, hydraulic oil compensation can be conducted on oil leakage ofthe system, and reliability of the lubricating cooling system is high.

The invention discloses an electric driving device based on a double-planet-row two-gear transmission. The electric driving device comprises a driving system shell, a driving motor, a first-planet-row sun gear, a first-planet-row planet carrier, an intermediate shaft, a second-planet-row sun gear, a brake, a clutch and a second-planet-row planet carrier, wherein the driving motor has an output shaft for outputting power; the first-planet-row sun gear is connected with the output shaft of the driving motor; the first-planet-row planet carrier is fixedly connected with a first-planet-row planet gear I and a first-planet-row planet gear II, and is fixedly connected with the driving system shell; the intermediate shaft is connected with a first-planet-row inner gear ring, and rotates along with the first-planet-row inner gear ring; the second-planet-row sun gear is connected with the intermediate shaft; the brake is arranged between the driving system shell and a second-planet-row inner gear ring; the clutch is arranged between the intermediate shaft and the second-planet-row planet carrier; and the second-planet-row planet carrier is fixedly connected with the output shaft. The electric driving device has the characteristics of compact design structure, no power interruption in gear shifting process, simple realization of reversing control, high utilization rate of whole vehicle energy, effective energy use and energy saving.

The present invention discloses an epoxy resin electric conduction adhesive and a preparation method thereof. The preparation method comprises: preparing graphene-modified flaky aluminum powder; sequentially adding 50-70 parts by weight of an epoxy resin, 10-30 parts by weight of a nitrile butadiene rubber, 10-20 parts by weight of a curing agent, 2-8 parts by weight of a curing accelerator, 0.5-1.5 parts by weight of a coupling agent, 15-35 parts by weight of a diluent, 10-20 parts by weight of a calcium carbonate filler and 15-35 parts by weight of the graphene-modified flaky aluminum powder to a double planet power mixing stirrer, carrying out mechanical stirring for 1-2 h under a vacuum degree of -0.08 to -0.1 MPa at a rotation speed of 300-1000 r / min and a revolution speed of 5-15 r / min, discharging the material, and storing at a low temperature of 0-8 DEG C after discharging the material. The epoxy resin electric conduction adhesive has characteristics of good toughness and high conductivity.

The invention provides a start coordinative control method of a double-planet-row hybrid electric vehicle. The method includes the steps of obtaining wheel rim expected torque according to vehicle information, then judging whether a start request exists or not, if yes, judging whether a whole vehicle controller sends out an oil spraying instruction or not according to the expected engine oil spraying rotating speed obtained through the engine cooling water temperature, obtaining the expected engine torque according to the vehicle speed and the accelerator pedal opening degree, inputting the expected engine torque to an engine controller to be executed, obtaining the final expected engine angular acceleration through processing according to the vehicle information, obtaining the limited wheel rim expected torque according to the obtained information and data, and processing the limited wheel rim expected torque, the final expected engine angular acceleration and the vehicle information to obtain large / small motor expected torque, inputting the large / small motor expected torque to the motor controller to be executed, and repeatedly executing the steps till the vehicle is started. The control method is simple and high in practicability and can relieve the starting impact problem.

The invention discloses a double-planet vacuum mixer. The double-planet vacuum mixer comprises a rack, a power hybrid structure, a high-speed dispersion structure and material cylinder containers; the power hybrid structure comprises a stirring motor, a mixing main shaft, a planetary gear mechanism, a planet carrier and stirring rods; the high-speed dispersion structure comprises a dispersing motor, a dispersing main shaft and dispersing shafts, and emulsifying heads and / or dispersing impellers are arranged on the dispersing shafts; each material cylinder container is connected with a hydraulic lifting device and driven by the hydraulic lifting device to rise and fall; seal structures are arranged at the outer side of the mixing main shaft and the outer side of the dispersing main shaft, and each seal structure comprises mechanical seals and a labyrinth seal. The double-planet vacuum mixer further comprises a vacuum treatment structure, and the vacuum treatment structure comprises a vacuum buffering device and a vacuumizing device. Transmission parts of the double-planet vacuum mixer are good in seal effect, and the double-planet vacuum mixer is long in service life, high in mixing efficiency and wide in application range.

The invention provides a dual-motor and double-planet-row power coupling transmission scheme optimization method. By means of a multi-freedom-degree planet transmission component comprehensive analysis method, possible power coupling transmission schemes of basic component composition of double planet rows are analyzed and optimized, and the optimal power coupling drive scheme suitable for an electromechanical composite transmission system driven by motors on the two sides is achieved. On the basis of the composition theory of components forming the planet rows, all feasible power coupling transmission schemes can be found through a systematic and strict method; in the feasible power coupling transmission schemes, the unusable schemes can be phased out step by step according to the optimization principle, and the scheme with the optimal performance can be selected at the highest speed; the method can be conveniently and easily achieved through software by means of computer languages; and the method has the beneficial effects of being universal and extensible.

The invention discloses a double-planet-row multimode hybrid power automobile power transmission system. One end of a first planet carrier is in clutch connection with a second gear ring through a first clutch while the other end of the same is in clutch connection with a first gear ring through a second clutch, and a first sun gear is connected with a first power source through a first transmission shaft; one end of a second planet carrier is connected with a brake while the other end of the same is in clutch connection with the first gear ring through a third clutch, a second sun gear is connected with a second power source through a second transmission shaft, and the second gear ring is connected with a power output shaft through a speed reducing device; a controller is electrically connected with the first clutch, the second clutch, the third clutch, the brake and each power source. Three power division modes like input, combination and output respectively adapted to low speed, medium speed and high speed under E-CVT combination drive are realized through only two planet row driving devices, and running efficiency of the transmission system and fuel economy of a whole automobile can be improved in the whole running speed interval.

The invention belongs to the technical field of hybrid automobiles and in particular relates to a hybrid transmission device. A double-mode hybrid transmission device for a commercial vehicle comprises a motor controller, three planet rows, two motors, a first clutch and a first brake, wherein the three planet rows are coaxially arranged; the three planet rows are an internal and external engaged double-planet row, a common planet row and a speed reducing planet row; the internal and external engaged double-planet row and the common planet row form a power splitting mechanism so that double-mode power splitting can be realized. Double modes are a speed dividing and moment gathering power splitting mode and a speed dividing and speed gathering power splitting mode. When the two modes are switched, the clutch has no speed difference so that a mode switching control system can be simplified. Compared with single mode power splitting, the double-mode hybrid transmission device for the commercial vehicle has the advantages that the speed ratio range of a variable transmission device can be enlarged, the torque and power of the motor can be reduced and the power density of the transmission device can be increased.

The invention discloses a compound double planet gear set type oil-electricity parallel-serial hybrid power system, which is composed of an engine, a No.1 motor, a No.2 motor, compound double planet gear sets, an output gear, a first lock, a second lock, an inverter and a super capacitor. The compound double planet gear set type oil-electricity parallel-serial hybrid power system has a compact structure, requires a small installation space, and is easy to control as only two locks are adopted. In an all-electric mode, a planet carrier and the engine are both locked by the first lock arranged on an input shaft, so that a crankshaft of the engine is prevented from reversely rotating, and the system control is simplified. The two motors are arranged on one end away from the engine and are integrated into a whole, so that the motor can be protected against influence caused by heat dissipation of the engine, and a motor cooling system is simplified. The No.1 motor is locked by the second lock arranged on a rotation shaft of the No.1 motor, so that the No.1 motor is prevented from operating near zero speed, and the efficiency of the motor is improved. The super capacitor serves as an energy storage component, so that the power performance of the vehicle is improved, and braking energy can be effectively recycled.

The invention provides a series-parallel type double planet tooth row gear structure. The series-parallel type double planet tooth row gear structure comprises an engine, a first motor, a second motor, an output shaft, a first planet row and a second planet row. The first planet row comprises a first sun gear, a first planet carrier and a first tooth ring. The second planet row comprises a second sun gear, a second planet carrier and a second tooth ring and further comprises a second clutch. The engine is connected with the first motor, the first motor is connected with the first sun gear, and the first sun gear is connected with the first planet carrier. The first planet carrier is connected with the second tooth ring to constitute a first planet carrier tooth ring which is connected with the output shaft. The first tooth ring is connected with the second planet carrier to constitute a second planet carrier tooth ring which is connected with the output shaft. The second planet carrier is further connected with the second motor through the second sun gear. The second clutch is further connected with the first planet carrier tooth ring. The effects of improving the power performance and transmission efficiency of a vehicle are achieved.

The invention discloses a double-clutch planetary electric differential mechanism, and relates to the technical field of vehicles. The double-clutch planetary electric differential mechanism comprises a main differential mechanism, a double planet wheel planet row, a left torque distribution planet row, a right torque distribution planet row, a deceleration planet row, a power clutch, a torque distribution clutch and a motor. Switching of different working modes is realized by controlling the connection and the disconnection of the torque distribution clutch and the power clutch. The double-clutch planetary electric differential mechanism is compact in structural design; the defect of low passage capacity, on a damaged pavement, of a vehicle is overcome; directional distribution of the output torque of a drive shaft is realized; the problems of poor acceleration performance and limited climbing capability of the vehicle in the low speed region are solved; the power performance and the economic performance of the vehicle are improved.

The invention discloses an electric driving system based on a single-planet-row two-gear transmission. The electric driving system comprises a shell, a driving motor, a double-planet-gear planet row, an output shaft, a first clutch and a second clutch, the driving motor comprises a driving motor shaft, a planet carrier of the double-planet-gear planet row is jointly connected with a first planet gear and a second planet gear and fixed on the shell, a sun gear is connected with the driving motor shaft, the output shaft is rotatably supported on the shell and used for outputting power, the first clutch selectively engages and disengages an inner gear ring and the output shaft, and the second clutch selectively engages and disengages the sun gear and the output shaft; when a first gear is selected, the first clutch engages while the second clutch disengages; when a second gear is selected, the first clutch disengages while the second clutch engages. The electric driving system has few parts and is compact in structure and convenient to mount; the driving motor has two working modes as a motor and a power generator, so that vehicle energy utilization rate is increased and effect of saving energy resources is realized.

The invention relates to a double-planet-row converging type multi-clutch speed variator which can meet multi-gear needs. The double-planet-row converging type multi-clutch speed variator comprises a main input shaft, a main output shaft, a multi-plate clutch and a double-planet-row converging mechanism. The multi-plate clutch comprises an input end, at least two clutch output shafts and a clutch mechanism. A first planet row of the double-planet-row converging mechanism comprises a first sun wheel input shaft and a first planet carrier input shaft, a second planet row comprises a second gear ring input shaft, a second planet carrier is in coaxial transmission connection with a first gear ring, and a second sun wheel is in coaxial transmission connection with the main output shaft. Each clutch output shaft comprises an even-number gear clutch output shaft and an odd-number gear clutch output shaft, an odd-number gear selecting and shifting gear set is arranged between the odd-number gear clutch output shaft and the first planet carrier input shaft, and an even-number gear selecting and shifting gear set is arranged between the even-number gear clutch output shaft and the second gear ring input shaft. A first sun wheel input shaft speed variator used for changing the rotating speed of the main input shaft into more than two kinds is arranged between the first sun wheel input shaft and the main input shaft.

The invention relates to a powertrain for a hybrid electrical vehicle, comprising an engine, a first motor, a second motor and a transmission device, said transmission device having a planet gear set with double planet gear ranks comprising a first planet gear rank and a second planet gear rank, said engine is arranged on one side of said planet gear set, said first motor and said second motor are arranged on the other side of the planet gear set, said first planet gear rank comprises a small sun gear, a planet carrier, a short planet gear and an outer ring gear, said second planet gear rank comprises a big sun gear, a long planet gear and the planet carrier shared with the first planet gear rank, said long planet gear meshes with the short planet gear and the big sun gear respectively.

The invention provides a wind power gear box. The wind power gear box comprises a front tank, a rear tank, a planet gear transmission mechanism and a parallel shaft transmission mechanism. The planetgear transmission mechanism comprises a first-stage planet gear train and a second-stage planet gear train. The first-stage planet gear train comprises an input shaft, a compound planet carrier, a compound double planet gear, a long planet gear shaft, a compound planet gear, a short planet gear shaft, an inert sun gear, a first-stage sun gear and a first-stage inner gear ring. The compound doubleplanet gear comprises a small planet gear body and a large planet gear body. The small planet gear body and the compound planet gear are in engaged transmission with the inert sun gear and the first-stage inner gear ring, and one way uniform loading is achieved; and the large planet gear body and the first-stage sun gear are in engaged transmission, and another way uniform loading is achieved. Thesecond-stage planet gear train comprises a second-stage sun gear, a second-stage inner gear ring, a flange, a second-stage planet gear and a planet gear shaft. According to the wind power gear box, multi-stage planet row unbalance loading can be suppressed, and system transmission is steadier.

The invention relates to a powertrain for a hybrid electrical vehicle, comprising an engine, a first motor, a second motor and a transmission device, said transmission device having a planet gear set with double planet gear ranks comprising a first planet gear rank and a second planet gear rank, said engine is arranged on one side of said planet gear set, said first motor and said second motor are arranged on the other side of the planet gear set, said first planet gear rank comprises a small sun gear, a planet carrier, a short planet gear and an outer ring gear, said second planet gear rank comprises a big sun gear, a long planet gear and the planet carrier shared with the first planet gear rank, said long planet gear meshes with the short planet gear and the big sun gear respectively.

The invention discloses a noncircular-bevel gear double-planet-carrier cam combined type transplanting mechanism for vegetable pot seedlings. Existing transplanting devices cannot deeply clamp soil and take seedlings due to limitation of seedling taking trajectory. Two primary planet noncircular gear systems are arranged at two ends of a central shaft symmetrically. Two ends of each primary planet noncircular gear system are connected with a secondary upper planet bevel gear system and a secondary lower planet bevel gear system respectively. Upper transplanting arms are fixed to the secondary upper planet bevel gear systems, and lower transplanting arms are fixed to the secondary lower planet bevel gear systems. Each primary planet noncircular gear system comprises a primary gear box, a primary central noncircular gear, a primary lower planet shaft, a primary lower planet noncircular gear, a lower cam connecting rod, a cam bawl, a cam, an upper cam connecting rod, a primary upper planet noncircular gear and a primary upper planet shaft. The noncircular-bevel gear double-planet-carrier cam combined type transplanting mechanism has the advantages that cam mechanisms drive secondary planet carriers to swing, about-4cm seedling taking trajectory at a trajectory seedling taking position is achieved, collision between transplanters and the seedlings is avoided, and soil clamping and seedling taking deep in pot slots are realized.