97 results about "Transmission ratio" patented technology

The application belongs to the field of range hood, and discloses a control method and device of a range hood, computer equipment and a readable storage medium. The method comprises the following steps: acquiring a first motor rotating speed of a motor under the condition that the motor operates according to a reference current; determining a first fan wheel rotating speed of a second fan wheel according to the first motor rotating speed and a transmission ratio of a transmission mechanism stored in advance; inquiring a current corresponding to the first fan wheel rotating speed as a target current in a corresponding relationship between the current required by each flue resistance interval and the oil fume suction capacity of the fan wheel rotating speed interval, and controlling the motor to operate according to the target current. The application can enhance the oil fume suction capacity of the range hood.

Proposed is a two-stage reduction gear comprising a housing and, arranged inside said housing, gears connected to one another so as to transmit rotational motion. Said gears are provided in the form of a planetary stage and a ballscrew stage. The planetary stage comprises an input component and an output component, and the ballscrew stage comprises an input component and an output component. The output component of the planetary stage and the input component of the ballscrew stage form a single part. Also proposed is a hinge containing the claimed two-stage reduction gear. The result is an increase in torque transmission over a wide range of transmission ratios, together with a decrease in the size and weight characteristics of the reduction gear and an increase in resistance to shock loads.

The invention relates to a method (100) for operating a pedal-driven vehicle (200), comprising at least one drive (201) for providing a drive torque (AM) for propelling the pedal-driven vehicle (200), a gearshift (202) for providing a variable transmission ratio, and a control unit (203), the method (100) comprising: - Providing (110) a first drive torque (AM1) at a first drive speed (N1) by the drive (201), - Providing (120) switching information for a planned switching operation, in particular by means of the gearshift (202), the switching information comprising a relief time indication, wherein the relief time indication is at least characteristic of a relief time (t Deload ), and - Adjusting (130) the drive torque (AM) and / or the drive speed (N) of the drive (201) provided by the drive (201) depending on the unloading time specification.

The present invention provides a control device for a human-powered vehicle that can suitably control the transmission. [Solution] The control device for a human-powered vehicle includes a control unit configured to control a transmission that changes the gear ratio, which is the ratio of the wheel rotation speed of the human-powered vehicle's wheels to the rotation speed of the crankshaft of the human-powered vehicle. The control unit is configured to control the transmission to change the gear ratio based on a gear condition relating to at least one of the wheel rotation speed and the crankshaft rotation speed. Even if the gear condition is not met, the control unit is configured to control the transmission to decrease the gear ratio if the human-powered driving force input to the crankshaft is greater than a threshold. The control unit is configured to set the threshold to a first threshold when the state of the human-powered vehicle is a first state, and to set the threshold to a second threshold different from the first threshold when the state of the human-powered vehicle is a second state different from the first state.

The invention relates to a method (100) for operating a pedal-driven vehicle (200), comprising at least one drive (201) for providing a drive torque for propelling the pedal-driven vehicle (200), a gearshift (202) for providing a variable transmission ratio, a control unit (203) and at least one detection unit (204), the method (100) comprising: - Detection (110) of a drive torque provided by the drive (201) and a drive speed of the drive, in particular by a detection unit (204), - Adjusting (130) at least one operating parameter of the gearshift (202) depending on the drive torque and / or the drive speed and / or a drive power provided by the drive (201).

This utility model discloses a high-torque dual-rigid-wheel harmonic reducer, relating to the field of reducer technology. It includes a reducer housing, a gear transmission structure, and a harmonic reduction structure. The reducer housing comprises a bottom shell and a side shell, with the side shell mounted on the open side of the bottom shell. The gear transmission structure includes a small bevel gear and a large bevel gear. The small bevel gear is inserted outside the bottom shell and rotatably connected to it, while the large bevel gear is installed inside the bottom shell and the side shell. This high-torque dual-rigid-wheel harmonic reducer, through the arrangement of the small and large bevel gears in the gear transmission structure, enables the reduction structure to meet the transmission connection requirements of two perpendicular structures. Furthermore, the dual-rigid-wheel structure not only improves the overall structural rigidity and enhances the resistance to deformation but also effectively improves the transmission ratio and structural stability. This allows the reducer to be suitable for high-load, high-precision applications while effectively reducing vibration and noise.

The present invention provides a control device for a human-powered vehicle that can suitably control the transmission. [Solution] A human-powered vehicle includes a transmission configured to change a gear ratio, which is the ratio of the rotational speed of the wheels of the human-powered vehicle to the rotational speed of the crankshaft of the human-powered vehicle. A control device for the human-powered vehicle includes a control unit configured to control the transmission, the control unit configured to control the transmission to change the gear ratio based on gear shifting conditions, and when the gear shifting conditions and gear shift suppression conditions are met, the control unit is configured to control the transmission in a first control state that suppresses gear shifts that increase the gear ratio, and in the first control state, the control unit is configured to change the degree to which gear shifts that increase the gear ratio are suppressed based on history information of human-powered driving force input to the crankshaft.

This invention discloses a speed reducer with adjustable reduction ratio and its adjustment method, relating to the field of speed reducer technology. The key technical points are: it includes an upper planetary assembly and a lower planetary assembly. The upper planetary assembly includes an upper planet carrier, an upper sun gear, upper planet gears, and an upper ring. The lower planetary assembly includes a lower sun gear, lower planet gears, and a lower ring. The upper sun gear and lower sun gear are connected and rotate coaxially, and the upper ring and lower ring are connected and rotate coaxially. The lower planet gears are connected to the lower sun gear and lower ring via friction transmission. At least one of the lower ring and lower sun gear has a gradient radius. The lower planet gears are configured to move along the direction of the axial displacement component to change their axial position on the gradient radius working surface, thereby changing the working radius of the lower sun gear and / or the lower ring. Through the continuous change of the working radius, the overall transmission ratio of the speed reducer is continuously adjusted, achieving a compact structure and stepless speed regulation.

This utility model discloses a lightweight reducer, including a module housing, a first planetary carrier, and a second planetary carrier. The second planetary carrier is disposed in an opening at one end of the module housing, and an internal gear ring is provided at one end of the second planetary carrier. The first planetary carrier is disposed inside the internal gear ring, and multiple first planetary gears meshing with the internal gear ring are movably mounted on the first planetary carrier. Multiple second planetary gears meshing with the internal gear ring are movably mounted on the second planetary carrier. A motor gear shaft meshing with the second planetary gears is installed at the center of the first planetary carrier. This utility model has a simple structure. By using an internal gear ring, all the first planetary gears, second planetary gears, and bearings are tightly assembled together, increasing utilization and reducing space. Furthermore, by setting a first weight-reducing groove, a second weight-reducing groove, and a third weight-reducing groove, its weight is reduced, achieving the purpose of lightweighting. Moreover, the transmission ratio enables the transmission of high torque through a high reduction ratio.

To provide an electric vehicle that allows drivers to experience operating a manual transmission vehicle while simultaneously maintaining ease of starting. [Solution] This disclosure relates to an electric vehicle having a manual mode for controlling an electric motor to simulate the operation of a virtual vehicle equipped with a virtual engine. The electric vehicle includes a transmission that changes the gear ratio between the electric motor and the drive wheels, a clutch provided between the electric motor and the transmission, a clutch operating device, and a control device that is communicatively connected to the clutch and the clutch operating device. In manual mode, the control device controls the clutch in response to instructions from the clutch operating device. The control device also controls the clutch independently of instructions from the clutch operating device to start the electric vehicle.

A planetary clutch device, used for converting different transmission ratios for a servo motor, and comprising a clutch spring (1), a sun clutch member (2), a ring gear clutch member (3), a planetary gear (4), and a planet carrier (5) for mounting the planetary gear (4). The clutch spring (1) abuts against a left end surface of the sun clutch member (2), a right end surface of the sun clutch member (2) is detachably fitted with the ring gear clutch member (3), the ring gear clutch member (3) comprises an inner ring gear, and the planetary gear (4) is meshed with the inner ring gear. When the clutch spring (1) is subjected to force and enters an engaged state, the sun clutch member (2) is disengaged from the ring gear clutch member (3), and the sun clutch member (2) is engaged with the planetary gear (4), thereby achieving transmission ratio conversion.

A transmission control method for a vehicle, comprising: determining a target transmission ratio from the rotational speed of a transmission input shaft (22) to the rotational speed of a transmission output shaft (24) in response to a signal in a first state, independent of any accelerator pedal position and dependent on a vehicle speed and a drive axle torque request when the axle torque request is valid, and determining the target transmission ratio in response to a signal in a second state based on the vehicle speed and an accelerator pedal position when the axle torque is not valid;controlling the opening of a first valve based on the desired gear ratio, wherein the first valve controls a transmission fluid flow to a first pulley actuator (34) and wherein the first pulley actuator (34) is connected to the transmission input shaft (22) of a continuously variable transmission (CVT) (14) and expands and contracts based on a first pressure of the transmission fluid applied to the first pulley actuator (34);and controlling the opening of a second valve based on the desired gear ratio, wherein the second valve controls a transmission fluid flow to the second pulley actuator (36), and wherein the second pulley actuator (36) is connected to the transmission output shaft (24) of the CVT (14) and expands and contracts based on a second pressure of the transmission fluid applied to the second pulley actuator (36), and wherein one of (i) a belt (38) and (ii) a chain (38) surrounds the first and second pulley actuators (34, 36).

This utility model provides a drive system and a vehicle. The drive system includes an engine, an input shaft, a first motor, a dual clutch, an intermediate shaft, a second motor, and a power battery. The engine is connected to the input shaft. The dual clutch includes a clutch input end, a first output end, and a second output end. The clutch input end is connected to the input shaft. The first and second output ends can be engaged or disengaged from the clutch input end, respectively. The intermediate shaft is driven by the first and second output ends. The transmission ratio between the intermediate shaft and the first output end and the transmission ratio between the intermediate shaft and the second output end are not equal, so that switching between two gears can be achieved through the control of the dual clutch. The second motor is driven by the intermediate shaft. By controlling the engine, the first and second motors, and the dual clutch, switching between different working modes can be achieved to adapt to different road conditions.

The utility model provides a kind of forklift electric drive wheel belongs to forklift technical field.It solves the problem of not applying two tooth difference reduction drive to forklift electric drive wheel.The forklift electric drive wheel includes drive frame, rubber wheel, driving motor, with one input shaft, multiple output pin shaft, two planetary gear and one inner tooth ring two tooth difference reduction drive assembly;Driving motor is located in the side of rubber wheel, two tooth difference reduction drive assembly is located in the other side of rubber wheel;Input shaft is connected with drive frame, and input shaft is connected with main shaft by key;Two planetary gear and two eccentric shaft part are one-to-one corresponding rotation connection, inner tooth ring is fixedly connected with drive frame, two planetary gear are engaged with inner tooth ring, and multiple output pin shaft is fixedly connected with wheel axle.The forklift electric drive wheel uses two tooth difference reduction drive assembly to reduce, with the advantage of high transmission ratio, and the forklift electric drive wheel also has the advantage of compact structure.

This utility model relates to the field of pipe fitting elbow adjustment technology, specifically a steel pipe fitting elbow angle adjustment device, including a base. Mounting plates are fixedly connected to both the front and rear ends of the base. A rotating assembly is installed inside the base, comprising a first motor fixedly mounted on the right side of the base. A worm gear is fixedly connected to the rotating shaft of the first motor, and the left side of the worm gear is engaged in a first fixed sleeve. A second fixed sleeve is fixedly connected to the lower middle position inside the base, and a rotating rod is inserted into the upper end of the second fixed sleeve. A worm wheel is sleeved on the rotating rod. The meshing transmission ratio of the worm and worm wheel is large, converting the high-speed rotation of the first motor into low-speed, high-precision rotation of the rotating rod, meeting the high-precision requirements of aerospace, nuclear power, and other industries. The self-locking characteristics of the worm wheel and worm gear ensure that the angle will not shift due to external force after the machine stops, improving stability.

The utility model discloses a kind of joint modules based on planetary reducer, including motor assembly, planetary reducer, shell, support and drive plate.The motor shaft of motor assembly is connected with the sun gear of planetary reducer, the sun gear is engaged with planetary gear, and the planetary gear is simultaneously engaged with inner tooth ring, and the planetary shaft is connected with planetary gear and planet carrier.In energized state, the rotor of motor assembly rotates and drives the rotation of motor shaft to drive the rotation of sun gear, and the sun gear drives the planetary gear, and the planetary gear is engaged with inner tooth ring transmission, to drive the low-speed rotation of planet carrier and output torque.The first end of motor shaft is connected with first counting gear, and the second counting gear is engaged with transmission and fixed on support, and transmission ratio is set as multiple of planetary reducer, and the rotation angle information of input end and output end can be obtained by cooperating with encoder and program compilation.The joint module has the advantages of high integration, fast response, high control accuracy, and simple and compact structure.

Method for operating a motor vehicle with a drive unit (1), a transmission (2) having several switching elements (9, 10, 11, 12, 13), and an output (14), wherein the transmission (2) is designed as an automatic or automated transmission and is connected between the drive unit (1) and the output (14), wherein in each engaged, friction-fit gear of the transmission (2) a first number of the switching elements (9, 10, 11, 12, 13) of the transmission (2) are closed and a second number of the switching elements (9, 10, 11, 12, 13) of the transmission (2) are open, where, depending on at least one operating condition of the motor vehicle, a sailing mode is entered, wherein, to enter the sailing mode of the motor vehicle, starting from a friction-locked gear, a switching element of the transmission (2) is actuated to open, so that in a non-friction-locked sailing gear one switching element is less closed and thus one switching element is more open than in a friction-locked gear, wherein, in the sailing mode of the motor vehicle, the respective closed and open switching elements of the transmission (2) are changed depending on at least one operating condition of the motor vehicle to adjust the sailing gear, whereby, when adjusting the sailing gear from an actual sailing gear to a target sailing gear, a switching element that is closed in the actual sailing gear and open in the target sailing gear is activated to open, and a switching element that is open in the actual sailing gear and closed in a target sailing gear is activated to close. where For the execution of a current tracking of the sail gear, a translation is determined depending on the switching element controlled or to be controlled to open and depending on the switching element controlled or to be controlled to close, which would then develop if the switching element controlled or to be controlled to open were to remain incorrectly closed, The system monitors whether, during the execution of the current tracking of the sailing gear, a gearbox input speed or a quantity dependent on the gearbox input speed lies within a defined range around the determined gear ratio or within a defined range around a quantity dependent on the determined gear ratio. where, if it is determined that this is the case, it is concluded that the switching element controlled to open for the current tracking of the sail gear remains closed due to a fault, characterized by the fact that Depending on the determined translation and an output speed or gearbox output speed, a synchronous speed is determined. The system monitors whether, during the execution of the current tracking of the sailing gear, the gearbox input speed is within a defined range around this synchronous speed. where, if it is determined that the transmission input speed is within the defined range, it is concluded that the switching element controlled to open remains closed due to a fault.

The utility model belongs to textile machinery technical field relates to a spinning cooling air conveying device, including combination formula cooling system and be located in combination formula cooling system's multiple pairs of motor and fan, in the same pair of motor and fan, motor's output shaft and fan's input shaft are connected through the shaft coupling. The utility model through the shaft coupling direct connection motor and fan, realize motor output shaft and fan input shaft coaxial transmission, and the transmission ratio 1:1 eliminates the rotational speed loss of traditional belt drive, avoids the wind pressure fluctuation caused by the belt slip, reduces the belt calibration work, and need not reserve the belt operation space, and the equipment installation and maintenance are more convenient, greatly reduce the shutdown loss and the accessory replacement cost.

This invention relates to the field of generator technology, specifically to an automotive generator with a speed control device. The generator includes an energy-saving generator, a first drive shaft fixedly mounted to the motor shaft of the energy-saving generator, and a second drive shaft coaxially arranged with the first drive shaft. A first sub-shaft is inserted into the first drive shaft, and a second sub-shaft is inserted into the second drive shaft. When the vehicle is idling and generating electricity, this invention automatically changes the transmission ratio between the engine and the generator, enabling the generator to rotate at high speed under low engine idling conditions. By changing the rotational speed, the excitation coil can be prevented from being in a high-current state for extended periods.

The application discloses a kind of design methods of steer-by-wire steering system transmission ratio, comprising: establishing the three-degree-of-freedom dynamics model of semi-trailer vehicle including tractor lateral motion model, tractor yaw motion model and trailer hinged angle motion model;Three reference variable steering transmission ratios based on yaw angular velocity gain, lateral acceleration gain and hinged angle gain are calculated respectively;Speed transition function is established and weight coefficient varying with vehicle speed is designed, and the three reference variable steering transmission ratios are weighted and fused to obtain the expression of steer-by-wire steering transmission ratio;The comprehensive evaluation index of semi-trailer vehicle handling stability including path tracking deviation index, driver control load index, trailer lateral stability index and hinged angle stability index is constructed;The optimization parameter vector in the expression of steer-by-wire steering transmission ratio is extracted, and the global optimization is carried out by using particle swarm optimization algorithm, and the optimal parameter is substituted into the expression of steer-by-wire steering transmission ratio to generate the speed-variable steering transmission ratio of semi-trailer vehicle steer-by-wire steering system.

The application discloses a kind of commercial vehicle multifunctional double motor coupling active steering system and its control method, comprising: the angle of collection vehicle steering wheel, torque signal;According to the signal calculated, vehicle stability margin is calculated, and the state of electromagnetic actuator is determined;Limiting the transmission ratio required under working condition is calculated;The angle value required by auxiliary motor is calculated, and control signal is sent to auxiliary motor;The assist torque value required by main motor is calculated, and control signal is sent to main motor;The torque distribution value of auxiliary motor and main motor under ordinary working condition is calculated, and is sent to auxiliary motor and main motor respectively;Output corresponding torque or angle, complete vehicle steering.The application can improve the lightness of steering at low speed under ordinary working condition by double motor assist coupling;Under limiting working condition, main motor is assisted alone, and auxiliary motor is compensated to driver steering angle by double-row planetary gear module, can realize stepless variable transmission ratio, realizes active rollover control.

This invention discloses a transmission system, a hub motor, and an agricultural unmanned vehicle. The transmission system uses spherical rollers as the transmission element in the input-output structure and incorporates a moving transmission component that adjusts with the actual rotational speed of the output structure. As the transmission component moves, the transmission ratio is adaptively adjusted, meeting the demands of low-speed high torque and / or high-speed low torque under limited power conditions. The hub motor and the agricultural unmanned vehicle can adaptively and promptly adjust the transmission ratio through a centrifugal mechanism in conjunction with the movable transmission element. This allows for the achievement of output characteristics of a motor with a fixed transmission ratio using a smaller power motor, reducing costs and enabling adaptive speed regulation in various scenarios.

The utility model relates to a kind of roller assembly and car steering wheel roller switch, involve car steering wheel technical field.Roller switch includes installation shell and roller assembly, and roller assembly includes roller support and roller body, output shaft is rotatably equipped on roller support, roller body passes roller axle, main gear, transmission gear and gear and drives output shaft rotation, transmission gear is limited by limiting structure, when using, roller body is driven to rotate roller axle, to drive output shaft rotation, the power output of roller body is realized by the transmission ratio between main gear, transmission gear and output gear, limiting structure is limited to transmission gear, reduce the probability that transmission gear sliding appears position deviation, improve the stability of transmission gear, to improve the stability and convenience of roller adjustment, compact structure, improve the roller use effect, and thus improve the overall use effect of car steering wheel roller switch.

The invention is a gearbox that uses the principle of dual-clutch transmissions, but in a highly simplified version that allows for a very large number of gear ratios and eliminates the need for a clutch to change gears. The principle is to alternate the transmission between two elementary transmissions with each rotation of their cycle. This allows for a slight change in the gear ratio of the transmission that does not transmit torque, referred to here as the passive transmission, as opposed to the one that transmits torque, which is called the active transmission. The applications are all those of gearboxes. Abstract figure: Fig. 1

The application discloses a variable speed device, a middle motor and a vehicle, and relates to the field of variable speed devices. The technical scheme points of the application are a multi-gear transmission mechanism and a gear shifting adjusting mechanism. The multi-gear transmission mechanism comprises a plurality of transmission gear assemblies arranged in a circumferential direction, and the transmission ratios of any two transmission gear assemblies are different. The transmission gear assembly comprises a transmission input gear and a transmission output gear arranged coaxially, and a clutch assembly for transmitting torque is arranged between the transmission input gear and the transmission output gear. Each transmission input gear can receive torque from an input mechanism, and each transmission output gear can transmit torque to an output mechanism. The gear shifting adjusting mechanism is used for controlling the clutch assembly in the multi-gear transmission mechanism to switch between a separation state and an engagement state. The application can realize more gears in a limited axial space, and facilitates gear shifting operation, so that the gear shifting process is smooth, thereby optimizing the riding experience.

This invention discloses a continuously variable transmission (CVT), specifically relating to the field of transmission technology. It includes a housing with an adjustment component on it. The adjustment component includes a connecting cover at one end of the housing, and an angle-adjustable ball joint hinged within the connecting cover. A first shift lever is located at the bottom of the ball joint. Through angle adjustment of the ball joint, and the linkage between a slider and a concave block, the first and second shift levers slide laterally, allowing for real-time fine-tuning of the meshing depth between the first and second connecting wheels and the linkage gear. This dual adjustment structure works synergistically, breaking the limitations of traditional segmented speed regulation. It enables seamless switching of the transmission ratio within a preset range. Furthermore, the high-precision angle control of the servo motor combined with the micron-level displacement adjustment of the ball joint ensures that the transmission ratio meets the corresponding control requirements, satisfying the needs of high-precision speed regulation scenarios.

This invention belongs to the field of transmission technology, and specifically relates to a mid-shaft transmission and a mid-mounted motor. The mid-shaft transmission provided in this application includes: a mid-shaft, rotatably supported on a vehicle frame, from which torque is input; a hollow sub-shaft, parallel to the mid-shaft; a transmission mechanism connected to both the mid-shaft and the sub-shaft, having at least two transmission ratios; a drive unit connected to a shifting mechanism and concealed within the sub-shaft; a shifting mechanism linked to the transmission mechanism for changing the transmission ratios of the transmission mechanism; and a front sprocket fixed to the transmission mechanism for outputting torque. The mid-shaft transmission and mid-mounted motor of this application conceal the drive unit within the sub-shaft, making efficient use of the space within the sub-shaft, resulting in a more compact mid-shaft transmission and a reduced overall size.

An electric vehicle is provided. The electric vehicle is controlled by a control mode including a manual mode that controls an electric motor in a manner that simulates an action of a virtual vehicle having a virtual engine. The electric vehicle includes a transmission configured to vary a transmission ratio between the electric motor and a drive wheel, a clutch disposed between the electric motor and the transmission, a clutch operation device, and a control device including a processor. The processor is configured to communicate with the clutch and the clutch operation device. The processor is configured to control the clutch in accordance with an indication from the clutch operation device in the manual mode. The processor is configured to control the clutch to start the electric vehicle without relying on the indication from the clutch operation device when the electric vehicle starts in the manual mode.

This utility model relates to the field of gearbox technology, and in particular to a micro-tiller gearbox with convenient gear adjustment. It includes an input shaft and an output shaft on a housing, connected by a transmission structure. The transmission structure includes a reverse gear shaft and an intermediate shaft arranged on the housing and parallel to the input shaft. A first double gear is axially movable on the input shaft, and a second double gear and a third double gear are respectively provided on the reverse gear shaft and the intermediate shaft, with the small tooth of the second double gear meshing with the large tooth of the third double gear. A first shift fork is provided on the housing. The working end of the first shift fork extends into the housing and can drive the first double gear to move axially to reverse gear, slow gear, and fast gear. This utility model features a simpler and more compact structural design, more convenient and smoother gear shifting operation, and a more reasonable gear ratio design.

This invention discloses a transmission system, a hub motor, and an agricultural unmanned vehicle, belonging to the field of transmission mechanism technology. The transmission system includes a transmission body between the input and output structures. By moving the transmission body, the contact position between the transmission body and the input and / or output structures is changed, altering R2 and / or R1, thereby changing the ratio of R2 to R1 and adjusting the transmission ratio. This allows for the satisfaction of low-speed high-torque and high-speed low-torque requirements even with limited power. Adjusting the transmission ratio by moving the transmission body is easier to achieve with a simpler structure compared to other methods. The hub motor and the agricultural unmanned vehicle can adjust the transmission ratio through the movement of the transmission body, making the adjustment method simple. This agricultural unmanned vehicle can achieve the output characteristics of higher-power motors in related technologies with a smaller motor, improving the overall vehicle cost-effectiveness by reducing the motor cost in hub motor vehicles.