416 results about "Continuously variable transmission" patented technology

A hybrid system for drones and other modes of transport. A combustion engine provides range and / or lifting capacity for drones while electric motors / generators provide both control and maneuverability. One or more combustion engines, in conjunction with one or more electric motors / generators form a propulsion system whereby each is connected to and drives its own driving pinion in one or more planetary gear sets, and provide continuously variable transmission for driving propellers or driveshafts. The combustion engine may be connected directly to one of the planetary gear's driving pinions, or can drive one of the planetary gear's driving pinions. If the propellers are only driven by either a combustion engine, or an electric motor / generator, the other engine / motor will be kept at rest by a braking device for a combustion engine or a braking device for an electric motor / generator.

The invention relates to a drive device (2) for a bicycle (1), comprising a pedal crank shaft (19), a first electric machine (18), a first partial transmission (6), a second electric machine (49), and a second partial transmission (7), wherein a first transmission element of the first partial transmission (6) is operatively connected to the first electric machine (18), wherein a second transmission element of the first partial transmission (6) is operatively connected to a second transmission element of the second partial transmission (7), wherein a third transmission element of the first partial transmission (6) is operatively connected to an output gear (8), wherein a first transmission element of the second partial transmission (7) is operatively connected to the second electric machine (49), and wherein a third transmission element of the second partial transmission (7) is fixed to a housing (3), and wherein a freewheel (14) is arranged between the pedal crank shaft (19) and the second transmission element of the first partial transmission (6).Furthermore, the invention relates to a bicycle (1) with such a drive device (2).

A utility vehicle includes a frame assembly, a plurality of ground-engaging members supporting the frame assembly, and a powertrain assembly operably coupled to the ground-engaging members and including a prime mover and a continuously variable transmission. Additionally, the utility vehicle includes an operator defined by a portion of the frame assembly and including seating for at least an operator. The utility vehicle also includes an electrical assembly comprising an electric motor operably coupled to the continuously variable transmission. The electric motor is positioned rearward of the operator area.

A human-electric hybrid powertrain with a continuously variable transmission achieved with the use of a bevel planetary gearset. Two electric motors are utilized to produce a hybrid powertrain with either a driveshaft, chain, or belt driveline. The electric motors combine to produce an infinitely variable range of gear ratios and power assistance to the operator.

An all-terrain vehicle (ATV) has a frame having front and rear ends, an internal combustion engine connected to the frame, the engine including a front portion and a rear portion, a single cylinder defining a cylinder axis, an air intake port defined in the front portion facing towards the front end of the frame, and an exhaust port defined in the rear portion facing towards the rear end of the frame. The ATV further has an exhaust assembly fluidly connected to the exhaust port. The exhaust assembly extends from the engine towards the rear end of the frame. The ATV further has a continuously variable transmission operatively connected to the engine, which includes a primary pulley being operatively connected to the engine, a secondary pulley, a drive belt looped around the primary and secondary pulleys, and a housing enclosing the primary pulley, the secondary pulley, and the drive belt.

The invention relates to a drive device (2) for a bicycle (1), comprising a pedal crank shaft (19), a first electric machine (18), a first partial transmission (6), a second electric machine (49), and a second partial transmission (7), wherein a first transmission element of the first partial transmission (6) is operatively connected to the first electric machine (18), wherein a second transmission element of the first partial transmission (6) is operatively connected to a second transmission element of the second partial transmission (7), wherein a third transmission element of the first partial transmission (6) is operatively connected to an output gear (8), wherein a first transmission element of the second partial transmission (7) is operatively connected to the second electric machine (49), and wherein a third transmission element of the second partial transmission (7) is fixed to a housing (3), and wherein a freewheel (14) is arranged between the pedal crank shaft (19) and the second transmission element of the first partial transmission (6).Furthermore, the invention relates to a bicycle (1) with such a drive device (2).

An electric drill reduction structure and an electric drill. The present invention relates to an electric drill reduction structure and an electric drill, and provides an electric drill reduction structure, wherein the electric drill reduction structure comprises a wheel-type continuously variable transmission and a cycloidal pinwheel reducer. The present invention also provides an electric drill, which has the above-mentioned electric drill reduction structure. The electric drill reduction structure comprises a wheel-type continuously variable transmission and a cycloidal pinwheel reducer, and has the characteristics of a wide speed regulation range, stepless speed regulation, balanced operation, low noise, etc., and overcomes the problems of gear box grease easily flowing out of the shift hole and gear shift jamming in traditional structures. The electric drill equipped with the electric drill reduction structure is far superior to traditional gear box hand drills in terms of speed, torque and impact rate in screwdriver mode. Because stepless speed regulation can be achieved, no matter how much power is required, the user can always adjust the speed ratio of the reduction to make the power motor always operate under the maximum power or highest energy efficiency condition.

A design method of CVT (continuously variable transmission) push pieces belongs to the technical field of CVT metal belt type continuously variable transmissions, and comprises the following steps: firstly, confirming design parameters, then sequentially arranging the push pieces on a minimum pitch circle of a steel ring according to the diameter D of the minimum pitch circle of rotation of the steel ring, and further confirming and correcting interference positions among the push pieces; and designing other parameters. According to the CVT pushing piece design method, the reasonable pushing piece size can be designed according to matched components such as a cone pulley and a steel ring, stable operation of metal belt type stepless speed change is guaranteed, and interference in operation is avoided.

The invention relates to a method for operating a drive train (20), wherein the drive train (20) has previously been converted from an internal combustion engine drive to an electric motor drive, wherein the drive train (20) comprises an electric motor (21), a continuously variable transmission (12), an electric motor control unit (23), a transmission control unit (14) and a driving strategy control unit (15), wherein the electric motor (21) is coupled to the continuously variable transmission (12), wherein the electric motor (21) is operated according to a control signal from the electric motor control unit (23), wherein the continuously variable transmission (12) is operated according to a control signal from the transmission control unit (14) and wherein the electric motor control unit (23) and the transmission control unit (14) are operated according to a control signal from the driving strategy control unit (15).The method according to the invention is characterized in that an overload situation of the drive train (20) is detected by a sensor and the drive power of the electric motor (21) is subsequently limited. The invention further relates to an electrified drive train.

A vehicle may include a continuously variable transmission which requires non-recycled air. The continuously variable transmission may provide non-recycled air to a first number of sheaves of the continuously variable transmission with a second number of air supply conduits, the second number being less than the first number. A cover of the continuously variable transmission may have a unitary body.

[Problem] A transmission structure that may improve a traveling feeling when a drive traveling state is interrupted in traveling and then the drive traveling state is resumed is provided. [Solution] A control device actuates a clutch actuator so that only a clutch mechanism on a most downstream side in a transmission direction in a selected shift gear is brought to a disengaged state when receiving a power cut-off signal in a state in which a traveling state change member is subjected to a forward operation or a reverse operation, and, actuates the clutch actuator so that only the clutch mechanism on the most downstream side in the transmission direction in the selected presumed shift gear is brought to a disengaged state based on a traveling state, and in addition, actuates a gear shift actuator so that a gear ratio of a continuously variable transmission mechanism that realizes a vehicle speed at that time point in the presumed shift gear is obtained while the power cut-off signal is valid, and actuates the clutch actuator so that the clutch mechanism on the most downstream side in the transmission direction in the presumed shift gear at that time point is brought to an engaged state when a cancel signal for canceling the power cut-off signal is input.

To provide a control device of a vehicle and a control method of the vehicle capable of reducing influence on a transmission by air suction of an electric oil pump.SOLUTION: A control device for a vehicle including a belt continuously variable transmission having a mechanical oil pump driven by an engine for driving drive wheels and an electric oil pump driven by an electric motor controls driving of the electric motor so as to supply hydraulic pressure from the electric oil pump to the belt continuously variable transmission when a rotation speed of the engine becomes equal to or lower than a predetermined rotation speed due to deceleration of the vehicle, and does not drive a second drive source for driving the second oil pump when a deceleration of the vehicle exceeds a predetermined deceleration.SELECTED DRAWING: Figure 1

The invention relates to a drive device (2) for a bicycle (1), comprising a housing (3) in which a drive arrangement (6) with a crankshaft (4) adjustable in its stroke and with several individual cranks (5), a driven arrangement (7) with an output shaft (9) operatively connected to a driven gear (8), and a crank-driven CVT transmission (10) operatively connecting the crankshaft (4) and the output shaft (9), with an adjusting device (11) for setting an eccentricity of eccentrics (12) of the crank-driven CVT transmission (10) operatively connected to the individual cranks (5), are arranged. The invention further relates to a bicycle (1) with such a drive device (2).

The application provides a hydraulic system of a hydraulic mechanical continuously variable transmission suitable for a large-horsepower tractor, and belongs to the technical field of tractor hydraulic systems. The hydraulic system comprises an oil pan, a lubricating hydraulic system, a working hydraulic system and a compensation system. The oil pan is connected with an oil inlet of a coarse filter. A lubricating pump of the lubricating hydraulic system, a system pump of the working hydraulic system and a compensation pump of the compensation system are connected in parallel and share an oil suction port. The oil suction port is connected with an oil outlet of the coarse filter. A PTO control hydraulic system, a direction gear control hydraulic system, a speed gear control hydraulic system and a double-station unit control hydraulic system are sequentially arranged on a working hydraulic pipeline. The hydraulic system is responsible for controlling the combination and disconnection of five groups of wet clutches to form gear intervals, controlling the combination and disconnection of a PTO clutch, controlling the change of a static liquid unit swing angle, controlling the flow distribution of a three-union oil pump, controlling the oil compensation of the static liquid unit and the forced lubrication of the entire transmission.

The invention relates to a method for converting a drive train (10) designed for an internal combustion engine (11) for a working machine to an electrically driven drive train (20) for a working machine, wherein the drive train (10) comprises an internal combustion engine (11), a continuously variable transmission (12), an internal combustion engine control unit (13), a transmission control unit (14) and a driving strategy control unit (15), wherein the internal combustion engine (11) is replaced by an electric motor (21) and the electric motor (21) is coupled to the continuously variable transmission (12) in a drive-related manner, wherein the internal combustion engine control unit (13) is replaced by an electric motor control unit (23) and the electric motor control unit (23) is coupled to the transmission control unit (14) in terms of data technology, and wherein the transmission control unit (14) and the electric motor control unit (23) are controlled by the driving strategy control unit (15) according to a drive requirement.The method according to the invention is characterized in that the electric motor control unit (23) is controlled by the driving strategy control unit (15) as if it were the combustion engine control unit (13).

This application discloses a speed control mechanism for the header of a corn harvester, comprising a power input unit, a continuously variable transmission unit, and a header drive unit connected in sequence. Two symmetrically arranged continuously variable transmission units each include a transmission box, a planetary gear assembly inside the box, and a hydraulic motor outside the box. The planetary gear assembly consists of a sun gear input shaft, a continuously variable output shaft, a sun gear, planet gears, a planet carrier, and an external gear ring. The hydraulic motor drives the external gear ring through a gear pair. By changing its speed and direction, the speed ratio of the planetary gears is continuously adjusted, thereby achieving stepless and smooth control of the output shaft speed. Power is transmitted to the ear-picking boxes and auger on both sides of the header via the header drive unit. This mechanism integrates planetary transmission and hydraulic motor speed control into a compact structure, provides smooth transmission, allows for stepless online adjustment of the header speed to adapt to working conditions, improves work quality and efficiency, and has overload protection.

The invention relates to the technical field of stepless speed change, in particular to an inclined journal stepless speed change method and a gearbox, the gearbox comprises a speed change mechanism, a linkage assembly, a transmission gear assembly, a speed regulation journal and an output gear assembly which are installed on a box body, and the method comprises the following steps that S1, the speed change mechanism drives a linkage rack to move so that the linkage rack can drive a linkage piece to move; s2, after the linkage piece moves, the driving point position of the linkage piece driven by the speed regulation shaft neck is changed, and then the movement stroke of the linkage piece is changed; s3, the stroke of the linkage piece is changed, so that the output speed of the transmission gear assembly driven by the linkage rack is changed; s4, changing the output rate of the transmission gear assembly to realize speed change of the output gear assembly; according to the inclined journal stepless speed change method and the gearbox, the motion stroke change of the speed regulation journal is directly converted into the motion stroke change of the linkage rack, intermediate links in the speed change process are reduced, motion is directly converted through the linkage assembly, power loss is reduced, and the stability of the working state and the speed change process is improved.

The application relates to an all-terrain vehicle and a method for controlling an engine in the vehicle, wherein the method for controlling the engine in the vehicle comprises the following steps: acquiring vehicle running information of the vehicle at a first time, acquiring environment temperature information of the continuously variable transmission at the first time; acquiring pre-set environment temperature information matched with the vehicle running information at the first time according to the vehicle running information at the first time; comparing the environment temperature information of the continuously variable transmission at the first time with the pre-set environment temperature information, and determining whether the continuously variable transmission slips at the first time; and if the continuously variable transmission slips at the first time, adjusting the torque output by the engine according to the vehicle running information at the first time. Through the application, the problem of transmission belt damage caused by the slipping of the continuously variable transmission of the all-terrain vehicle is solved.

Power-split continuously variable transmission system for stepless transmission of drive power for an agricultural vehicle, with an input element for introducing torque and speed at least two switchable output elements for outputting torque and speed, an electromagnetic gear stage with an inner and a middle rotor and an outer stationary ring element, which are mounted concentrically to each other, a mechanical gear stage connected to the electromagnetic gear stage, wherein the outer ring element of the electromagnetic gear stage has electromagnetic coils to generate an electromagnetic field, and an output element is actuated solely by the electromagnetic gear stage, and a further output element is actuated by the electromagnetic gear stage and the mechanical gear stage, wherein the continuously variable transmission system is designed such that the same rotational speed is present between two output elements at a switching point in order to carry out a switching between them synchronously.

There is discloseda straddled vehicle (1) including an engine (11), a continuously variable transmission (21), an electric motor (31), and a controller (40). The engine (11) generates power; the continuously variable transmission (21) transmitting power of the engine (11) to a rear wheel (5); the electric motor (31) changing a shift position of the continuously variable transmission (21); the controller (40) controlling the electric motor (31); when the controller (40) changes from a non-power-supply state to a power-supply state, the controller (40) controls the electric motor (31) to make a shift speed of the shift position equal to or less than a first speed (V1); the first speed (V1) being smaller than a maximum value (M) of the shift speed.

This utility model belongs to the field of transmission technology and relates to a differential coupling speed regulation device for a cone-disc continuously variable transmission (CVT). It includes a first-shaft cone-disc unit, a second-shaft cone-disc unit, an annular transmission component, and a speed regulation system. The speed regulation system consists of a first speed regulation power source, a second speed regulation power source, a rotary thrust unit, and a differential coupling unit. The first speed regulation power source serves as the main driving force source, and the rotary thrust unit converts relative rotational motion into axial movement to drive the moving cone disc and achieve speed regulation. This utility model couples the outputs of the two power sources through the differential coupling unit, reducing the power requirement of the second speed regulation power source and avoiding the drawbacks of needing to adapt the second speed regulation power source to high power. Furthermore, speed regulation is achieved through speed coupling and dynamic coordination of the speed regulation system, avoiding various problems associated with using high-speed thrust bearings.

To enable further improvement of a structure for a pulley device and thereby enable energy efficiency.SOLUTION: A pulley device provided on an output rotary shaft of a power source, comprises: a fixed sheave; a movable sheave that can move in an axial direction relative to the fixed sheave; and a weight roller that is disposed on a side of the movable sheave opposite to the fixed sheave, and presses the movable sheave toward the fixed sheave by moving radially outward by means of centrifugal force caused by rotation of the output rotary shaft. A contact surface of the movable sheave with the weight roller is formed in a raised shape.SELECTED DRAWING: Figure 8A

A transmission device (21) is provided with an input shaft (22), an output shaft (23), a planetary continuously variable transmission mechanism (24), a direct coupling mechanism (27), an idler element (28), a multi-speed transmission mechanism (26), and a controller (25). A controller (25) controls the rotational speed of a first transmission member (33) of the planetary continuously variable transmission mechanism (24) and the engagement and disengagement of a first clutch (27C) of the direct coupling mechanism (27). The controller (25) can switch the transmission device (21) to three transmission states, namely a first transmission state (stepless speed change), a second transmission state (internal lock) and a third transmission state (external lock).

The invention belongs to the field of hydraulic torque converters, and particularly relates to a CVT (continuously variable transmission) hydraulic torque converter with a projection welding energy gathering ring structure. The hydraulic torque converter comprises a cover wheel hub and a cover wheel shell. An energy gathering ring is arranged on the end face of one end of the cover hub; the end face of one end of the cover hub is further provided with two molten pool grooves. The two molten pool grooves are annular grooves and are oppositely formed in the inner ring and the outer ring of the energy gathering ring on the hub cover; the sides, close to each other, of the two molten pool grooves are connected with the inner ring and the outer ring of the energy gathering ring correspondingly. Gaps are respectively formed between the inner side edge and the outer side edge of the end surface of one end of the cover hub and the other sides of the two molten pool tanks, and the end surface of one end of the cover hub is positioned at the gaps to serve as a supporting surface. According to the invention, the energy-gathering ring is innovatively designed, the bottom supporting surface is increased, and meanwhile, the melting tank is designed at the root part, so that the deflection phenomenon in the welding process is avoided, the form and location tolerance requirements of the perpendicularity and the coaxiality after the hub is welded are met, meanwhile, the welding strength requirement is met, and the welding qualification rate is improved.

To provide a vehicular cooling device that enables improvement of fuel consumption (electricity consumption), suppression of vibration and noise or the like by appropriately controlling operation of cooling liquid cooling means and suppressing waste energy consumption on the basis of a temperature of cooling liquid used for a power transmission regardless of a traveling state of a vehicle.SOLUTION: A vehicular cooling device 10 that cools inside of a belt type continuously variable transmission (power transmission device) 3 mounted to a vehicle by using cooling liquid includes: a liquid temperature sensor (cooling liquid temperature acquisition means) 23 for acquiring a cooling liquid temperature that is a temperature of cooling liquid; cooling liquid cooling means (shutter grill 13, radiator fan 14, electric liquid pump 22, mechanical water pump 16, electric water pump 18, belt type continuously variable transmission 3, and engine 1) for cooling the cooling liquid; and a TCU (cooling liquid cooling means control device) 30 for controlling the cooling liquid cooling means. The TCU 30 actuates the cooling liquid cooling means on the basis of a cooling liquid temperature T when the cooling liquid temperature is acquired, and a temperature rise coefficient K.SELECTED DRAWING: Figure 1

The invention relates to a propulsion system comprising a motor disposed at a central portion of the propulsion system, the motor further comprising a rotor shaft. The system includes a diverter gearbox coupled to the rotor shaft, the diverter gearbox further including at least one diverter output shaft. The system includes at least one continuously variable transmission (CVT) coupled to the diverter output shaft, the CVT further including a driveshaft. The system comprises at least one bevel gear box, the bevel gear box comprises a bevel gear box input shaft and a bevel gear box output shaft, the bevel gear box input shaft is arranged parallel to the horizontal plane, and the bevel gear box output shaft is arranged at an angle to the bevel gear box input shaft. Wherein the bevel gear box input shaft is coupled to the transmission shaft. The system includes at least one propeller coupled to the bevel gear box output shaft.

The utility model relates to the technical field of transmissions, and discloses a continuously variable transmission which comprises a first transmission unit and a second transmission unit which are coaxially arranged, the first transmission unit comprises a first transmission arm, the second transmission unit comprises a second transmission arm, and the first transmission arm and the second transmission arm are arranged in a mutually nested mode. The rolling body can abut against the first transmission arm and the second transmission arm. And the variable-diameter control unit is configured to be capable of driving the rolling body to move to different radial positions, so that the first transmission arm and the second transmission arm are in transmission joint through the rolling body at the different radial positions. The rolling body is driven to move to different radial positions, so that the first transmission arm and the second transmission arm are in transmission combination at different radial positions, the output speed of the continuously variable transmission is changed, and continuously variable transmission is achieved. And meanwhile, the first transmission arm and the second transmission arm are jointed through the rolling body, so that the service life of the continuously variable transmission is prolonged.

This invention relates to a continuously variable transmission (CVT) structure that facilitates belt disassembly and assembly. It includes a bottom support plate, on the upper surface of which is a pulley mounting base plate. The pulley mounting base plate is secured to the bottom support plate using reamed bolts. A left-side bearing mounting seat and a right-side bearing mounting seat are spaced apart on the pulley mounting base plate. The right-side bearing mounting seat is fixedly connected to the pulley mounting base plate. The threaded end of the reamed bolt passes sequentially through the left-side bearing mounting seat and the pulley mounting base plate, and is threadedly connected to a nut. The left-side and right-side bearing mounting seats are rotatably connected to the two ends of a rotating shaft via spherical bearings. This invention, through a rational structural arrangement, effectively transmits power from the engine output to the end components. Taking advantage of the self-aligning characteristics of spherical bearings, the rational structural arrangement facilitates belt disassembly and assembly.

The invention relates to a drive device (2) for a bicycle (1), comprising a housing (3) in which a drive arrangement (6) is arranged with a crankshaft (4) adjustable in its stroke and having several individual cranks (5), a driven arrangement (7) with an output shaft (9) operatively connected to a driven gear (8), and a crank-drive CVT transmission (10) operatively connecting the crankshaft (4) and the output shaft (9), the latter with an adjusting device (11) for setting the eccentricity of eccentrics (12) of the crank-drive CVT transmission (10) operatively connected to the individual cranks (5). The invention further relates to a bicycle (1) with such a drive device (2).

This invention discloses a self-circulating wind turbine system, belonging to the field of wind power generation technology. It includes: an air inlet duct module connecting a natural wind source to an air inlet gearbox, with a dust filter at the air inlet; and an air inlet gearbox module employing a continuously variable transmission (CVT) with a planetary gear set structure. The meshing state of the sun gear and planetary carrier is dynamically adjusted via an electromagnetic clutch. This invention generates a self-circulating airflow through a built-in wind turbine, combined with a dual-path variable-speed power generation design, eliminating the dependence of traditional wind power generation on the stability of natural wind. In remote scenarios without an external power grid or in emergency power supply needs, the flowing air within the air inlet and outlet ducts can be used to convert power into electricity via the air inlet and outlet gearboxes, respectively, achieving a dual function of "self-sustaining + external power supply," greatly improving the stability and autonomy of power supply.