1435 results about "Transmission ratio" patented technology

A multi-mode electric transaxle for a work vehicle includes a transaxle housing and wheel end units coupled to the transaxle housing and have hubs rotatable about a wheel axis. An electric machine and a transmission are supported within the transaxle housing. The transmission receives rotational power from the electric machine and is configured to effect multiple gear ratios at a range gear. A drive gear is mounted within the transaxle housing to rotate about the wheel axis and has multiple gear mesh locations, including a first gear mesh location at an outer circumference of the drive gear where the range gear engages the drive gear and a second gear mesh location at an annular face of the drive gear. An output shaft has an inner end mounting an output gear within the transaxle housing to engage the drive gear at the second gear mesh location. The output shaft extends outside the transaxle housing. A transaxle gear assembly couples the drive gear to rotatable the hubs of the wheel end units.

The utility model discloses an integrated joint motor, which comprises a speed reducer assembly, a motor assembly, a shell and a driver assembly, the motor assembly and the driver assembly are both arranged on the shell, a center wheel is arranged in the middle of the motor assembly, a containing part is arranged on the outer side of the center wheel, the speed reducer assembly is coaxially arranged in a containing cavity and meshed with the center wheel, and the integrated joint motor is compact in structure, large in transmission ratio, large in torque output and small in mass size.

The invention relates to the technical field of lead frame slitting devices, in particular to a lead frame slitting device and method. Comprising a mounting plate, the mounting plate is fixedly connected with a cutting table, the mounting plate is fixedly connected with symmetrically-distributed fixing columns, the mounting plate is provided with a winding roll, a lead frame roll is wound on the winding roll, the symmetrically-distributed fixing columns are jointly connected with a cutting knife in a sliding mode, one fixing column is connected with a first motor in a sliding mode, and the other fixing column is connected with a second motor in a sliding mode. And an output shaft of the first motor is fixedly connected with a cam, the fixing column is rotationally connected with a connecting rod, and the end, away from the cutting knife, of the connecting rod is fixedly connected with a transmission wheel. The thickness of the lead frame is detected, then the position of the first motor is adjusted, the transmission ratio between the cam and the transmission wheel is changed, the downward moving speed of the cutting knife can be adjusted along with the thickness of the lead frame, and abrasion of the cutting knife in the cutting process is reduced.

The invention relates to a single-motor two-gear efficient electric drive axle transmission system which is characterized by comprising a motor, a parallel shaft set, a driving gear set, a driven gear set, a gear shifting combination gear, a spline gear hub, a gear shifter, a differential mechanism module and a tire module. Symmetrical arrangement is adopted, gear parameters can be designed more reasonably, the first shaft, the second shaft and the fourth shaft are located on the two sides of the half shaft, the third shaft is a hollow shaft sleeved on the right half shaft, the structure is more stable, and space is saved. According to the gear shifter structure, the two-gear function can be achieved, a low gear is matched with a large transmission speed ratio, four-stage speed reduction is achieved, a large enough torque is provided for a vehicle under the working conditions such as starting, getting out of difficulty and climbing, a high gear is matched with a small transmission speed ratio, and a high enough rotating speed is provided for the vehicle under the high-speed working condition; the first gear is four-stage speed reduction, the transmission ratio is large, and large torque can be provided under the low-speed working condition; and the second gear adopts two-stage speed reduction, so that mechanical loss can be reduced, and the transmission efficiency is improved.

The invention provides a multi-wire cutting device capable of synchronously adjusting variable spacing, which comprises a rack, a variable spacing driving mechanism, a roller wheel group, a cutting wire, a second driving mechanism and a synchronous transmission mechanism, the variable-pitch driving mechanism comprises a first driving mechanism used for driving the outer roller wheels to rotate to achieve cutting operation and a variable-pitch assembly used for adjusting the distance between the roller wheel sets. When the distance is adjusted, the roller wheel sets do not need to be detached, and the distance between the roller wheel sets can be synchronously adjusted only through motor control; in the variable-pitch multi-wire cutting machining process, stable operation of the wire cutting machine can be achieved, and due to the small step angle of the stepping motor, the high transmission ratio of the worm gear and the worm and the wide-range transmission ratio of the planetary gear set in the aspect of adjustment, distance adjustment of the variable-pitch multi-wire cutting machine has the beneficial effects of being high in efficiency, stability, precision and flexibility; and the method is suitable for production scenes with machining requirements of high efficiency, high precision and wide cutting range, so that the method is easy to popularize and apply.

Provided are a method and apparatus for controlling the steering of rear wheels, and a vehicle and a storage medium. The method for controlling the steering of rear wheels comprises: when a front-wheel steering-by-wire system fails, determining a steering control quantity of a steering wheel; on the basis of the steering control quantity, a target transmission ratio between the steering wheel and front wheels, and a yaw direction value, determining a target steering control quantity of rear wheels; and on the basis of the target steering control quantity, controlling the steering of the rear wheels. Since yaw is generated during the steering of front wheels, a yaw direction value is introduced when a target steering control quantity is determined, such that the same steering effect can be produced during the steering of the rear wheels and the steering of front wheels. Therefore, when a front-wheel steering-by-wire system fails, the method can not only aid, by means of the rear wheels, a vehicle in meeting steering requirements, but can also achieve a steering effect the same as that of the front wheels, thereby conforming to the steering habit of a vehicle user.

The invention discloses a combined type coaxial high-speed helicopter flight / turboshaft engine comprehensive control system. The system comprises the following steps that according to control mechanism parameters output by a flight control system and a combined type coaxial high-speed helicopter fuzzy torque prediction model, a flight required torque advanced prediction value of a combined type coaxial high-speed helicopter system is output; the flight required torque advanced prediction value is input into a turboshaft engine system identification model after being superposed by a variable transmission ratio proportionality coefficient to obtain a fuel prediction value, and the fuel prediction value is further superposed with the output of an engine control system to obtain the fuel input of the turboshaft engine system; calculating a flight required torque advanced prediction value error, and if the error value is greater than a threshold value, updating the fuzzy torque prediction model by using the flight state parameters of the composite coaxial high-speed helicopter system; the relative error value of the current power turbine rotating speed is calculated, and if the relative error value is larger than a threshold value, primary parameter updating is conducted on the identification model of the turboshaft engine system through a recursive least square algorithm according to the real-time and historical torque input of the turboshaft engine system and the power turbine rotating speed. According to the method, under the condition that the constant rotating speed control target of the turboshaft engine is considered, the stability of a coaxial high-speed helicopter flight / turboshaft engine comprehensive control system is enhanced, the response speed of the turboshaft engine is increased, and the overshoot and droop amount of the rotating speed of a power turboshaft is reduced.

The invention provides a method and device for controlling steering of rear wheels, a vehicle and a storage medium. When a front wheel steer-by-wire system of the vehicle breaks down, the front wheel steer-by-wire system cannot control front wheel steering. Therefore, rear wheel intervention is needed to achieve vehicle steering. According to the scheme, when the front wheel steer-by-wire system fails, the steering control quantity of a steering wheel is determined; a target steering control amount of the rear wheels is determined based on the steering control amount, a target gear ratio between the steering wheel and the front wheels, and the yaw direction value. Due to the fact that yawing can be generated in front wheel steering, the yawing direction value is introduced when the target steering control quantity is determined in the scheme. Therefore, the steering effect of the rear wheel is the same as that of the front wheel. A target angle value for rear wheel rotation is also determined based on the steering control amount and the target gear ratio. Therefore, according to the scheme, when the front wheel steer-by-wire system fails, the vehicle can be assisted by the rear wheels to meet the steering requirement, the steering effect the same as that of the front wheels is achieved, and the steering habit of a vehicle user is met.

There is provided an air pressurisation system for an aircraft, the air pressurisation system comprising: a transmission for driving a rotor of a blower compressor for the air pressurisation system, wherein the transmission comprises: a first input configured to receive drive from a spool of a gas turbine engine; a second input; and an output configured to drive to the rotor of the blower compressor, wherein a speed of the output is determined by a function of speeds of the first and second inputs; and a brake coupled to the second input, wherein the brake is operable to engage and brake the transmission at the second input, in order to fix a transmission ratio of the transmission between the first input and the output.

The invention discloses a rotary joint actuator and a design method thereof.The rotary joint actuator comprises a fixed shell, the fixed shell comprises a front cover and a rear cover, and a frameless motor and a cam curved surface tooth planetary reducer are both arranged in a mounting cavity reserved between the front cover and the rear cover; the driving device is connected with the frameless motor; the driving device comprises a driving plate, the encoder is fixed on the driving plate, the driving plate is fixed inside a driving cover plate, and the driving cover plate is fixed outside the rear cover; the cam curved surface tooth planetary reducer comprises an input bearing, a planetary needle bearing, a planetary carrier set and a planetary gear set. The planetary gear set comprises a sun gear, a curved surface tooth planet gear and a gear ring which is in conjugate engagement with the curved surface tooth planet gear. The invention discloses a rotary joint actuator and a design method thereof, and the rotary joint actuator is compact in structure and has the characteristics of large transmission ratio, high transmission precision and good stability under the condition of size control.

The utility model discloses a mechanical heeling meter, which relates to the technical field of inclination angle measuring devices and comprises a meter shell, an observation port arranged at the front end of the meter shell and a transmission mechanism, and the transmission mechanism comprises a driving wheel and a driven wheel which are arranged in the meter shell; the driving wheel is in transmission connection with the driven wheel; the transmission ratio of the driving wheel to the driven wheel is not less than 1; the pendulum driving assembly comprises a connecting piece and a hammer body; the hammer body is positioned on one radial side of the driving wheel; the hammer body is in transmission connection with the driving wheel through a connecting piece and can drive the driving wheel to rotate relative to the meter shell through the gravity distance effect. An indication assembly; the indicating assembly comprises a dial and a pointer matched with the dial to indicate the inclination angle. The dial and the pointer are arranged at the front part of the meter shell and correspond to the observation opening; the pointer is coaxially and fixedly installed on the driven wheel. The inclination angle measuring device can improve inclination angle measuring precision and has the advantages of being compact and small in structure and convenient to install.

The invention is suitable for the field of vehicle steer-by-wire, provides a steer-by-wire steering wheel force sensing redundancy device and a control strategy, and realizes reliable force feedback of a steering wheel through double force sensing redundancy design of a mechanical spring and a road sensing motor. The algorithm comprises the steps of monitoring the state of a road sensing motor in real time, automatically switching to a mechanical redundancy mode when communication loss, current overload and other abnormalities occur, and dynamically adjusting a four-wheel steering strategy according to the vehicle speed, wherein the flexibility is improved through low-speed out-phase steering, and the stability is improved through high-speed in-phase steering. A steering protection mechanism is arranged, and a front wheel fixed transmission ratio and steering angle limitation are triggered after overrun. Through combination of structural redundancy and intelligent control, the reliability and safety of the steer-by-wire system are remarkably improved, and the steer-by-wire system has good control performance and driving experience.

The invention discloses a distributed K-H-V type involute joint module with a small tooth difference. The distributed K-H-V type involute joint module is applied to a joint on a snakelike mechanical arm. The joint module is composed of three sets of rotary driving units, a rack, an inner gear and an outer gear, in the transmission process, the eccentric shaft rotates to drive the inner gear to output at the rotating speed, and then the outer gear translates. The three groups of rotary driving units are respectively mounted in through holes formed in the inner gear and the outer gear at equal intervals; the rotary driving unit is matched with a bearing, an outer gear and an inner gear through a small motor, so that the space utilization rate of the joint module is increased; and in addition, by reducing transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of small size and high output efficiency on the basis of having the characteristics of high rigidity and large transmission ratio of involute small tooth difference planetary gear transmission.

The invention relates to the field of shock absorber detection, in particular to a detection device for automobile shock absorber production. Comprising a test bench, a driving motor and a continuously variable transmission are fixedly installed on the test bench, a first delivery wheel and a test roller which are symmetrically distributed are installed on the test bench, the output end of the continuously variable transmission is in transmission connection with the first delivery wheel and a second delivery wheel through a belt, and a limiting shell is fixedly connected to the test bench. The limiting shell is slidably connected with a first limiting block and a limiting piston rod, and an oil hydraulic cylinder is fixedly connected to the side, close to the driving motor, of the testing table. The transmission ratio of the continuously variable transmission is changed through cooperation of the first limiting block, the limiting piston rod and the oil hydraulic cylinder, when the piston rod makes contact with the first limiting block, the delivery speed of the piston rod is correspondingly decreased, and when the piston rod does not make contact with the first limiting block, the delivery speed of the piston rod is correspondingly increased; the connection efficiency of the detection process of the two piston rods is improved.

The invention discloses a gear shifting gearbox and an asynchronous rolling mill, and relates to the technical field of rolling equipment. The transmission mechanism comprises a main transmission shaft, a first output shaft and a second output shaft, the main transmission shaft, the first output shaft and the second output shaft can be rotationally installed in the box body along the axes of the main transmission shaft, the first output shaft and the second output shaft are driven by the main transmission shaft to rotate, and the rotation directions of the first output shaft and the second output shaft are opposite; the gear shifting mechanism comprises a wheel disc and a plurality of first gear sets, the wheel disc can rotate around the axis of the wheel disc to be connected to the main transmission shaft, the first gear sets are arranged on one end face in the wheel disc, all the first gear sets are in transmission connection with the main transmission shaft, and different first gear sets are switched through rotation of the wheel disc to be in transmission connection with the first output shaft; the main transmission shaft is in transmission connection with the first output shaft through one of the multiple first gear sets, the transmission ratios of the first gear sets are different, and multiple rotation speed ratios exist between the first output shaft and the second output shaft.

The present invention provides a flapping-wing mechanism based on incomplete gear transmission, including a skeleton support structure, a reduction gear structure, a flapping-wing rod structure, a transmission gear structure, a transmission main shaft structure and a motor structure; the motor structure, the reduction gear structure, the transmission main shaft structure, the transmission gear structure and the flapping-wing rod structure are sequentially connected in transmission. A motor output shaft gear is arranged on the output shaft of the motor. The reduction gear structure includes a first reduction gear and a double-layer gear; the transmission gear structure includes a first incomplete gear, a second incomplete gear and a third incomplete gear; in the present invention, the transmission gear structure is used to cooperate with the flapping-wing rod structure to convert the rotational motion of the main shaft structure driven by the motor into the flapping motion of the flapping-wing rod structure through a plurality of incomplete gears, without a quick return characteristic and with uniform speed changes. And through the mutual meshing between the gears, the technical effects of high flapping synchronization and stable and consistent transmission ratio can be achieved.

The invention provides a steer-by-wire transmission ratio adjusting method and system. The steer-by-wire transmission ratio adjusting method comprises the following steps that (11) the target transmission ratio of a vehicle is determined; and (12) adjusting the rack position of the steering mechanism based on the deviation between the current transmission ratio of the vehicle and the target transmission ratio until the current transmission ratio of the vehicle is adjusted to the target transmission ratio. The transmission ratio of the vehicle is dynamically adjusted based on the vehicle speed, the stability and flexibility requirements of the vehicle are considered in a balanced mode, when the vehicle speed is high, the large transmission ratio with the small flexibility is selected, the stability and safety of the vehicle are ensured, when the vehicle speed is low, the small transmission ratio with the large flexibility is selected, the steering flexibility of the vehicle is high, and driving operation is more convenient.

The invention discloses a winding drum rope arranging device which comprises a winding drum base, a winding drum, a gear transmission mechanism, a lead screw, a swing roller assembly, a convex shaft and a reversing assembly. The reversing assembly comprises a power assembly and a reversing clutch assembly. The gear transmission mechanism and the lead screw convert rotary motion of the winding drum into linear motion of the swing roller assembly, so that the winding drum moves along with the rope coiling position. When the winding drum is full of one layer, the swing roller assembly reaches the limit deviation position to drive the protruding shaft to rotate, the power assembly amplifies the rotation angle and conducts one-way transmission, and the reversing clutch assembly changes the rotation direction of the lead screw to achieve reversing. A pure mechanical structure is adopted, a sensor and an electric control system are not needed, reliability is high, and cost is low; the swing roller assembly reduces abrasion of the steel wire rope and limits the support to guarantee accurate movement; rope arrangement synchronization is achieved through the transmission ratio design, the reversing assembly has the precise reversing function and the torque protection function, the rope disorder and rope sinking phenomena can be effectively avoided, and the service life of the steel wire rope is prolonged.

The invention provides a transmission ratio self-adaptive adjusting mechanism for a lightweight knee joint artificial limb. The transmission ratio self-adaptive adjusting mechanism comprises a rack module, the joint rotating module is arranged on the rack module, is used for driving a knee joint to rotate and comprises a small quadrangular frustum pyramid, a rotating piece and a joint rotating shaft with a spline sleeve; the gear transmission module is arranged on the rack module, is used for driving the joint rotating module and comprises a driving motor, a bevel gear transmission system, a three-stage gear transmission system and a worm and gear transmission assembly, and the driving motor drives a joint rotating shaft to rotate by driving the bevel gear transmission system or the three-stage gear transmission system; the switching module is arranged on the rack module and used for driving the spline sleeve to slide so as to switch the bevel gear transmission system and the three-stage gear transmission system, the switching module comprises a switching motor and a switching module transmission assembly, the spline sleeve is sleeved with the switching module transmission assembly, and the switching module transmission assembly is driven by the switching motor to slide so as to switch the bevel gear transmission system and the three-stage gear transmission system. Therefore, the spline sleeve is driven to slide.

A gearing assembly (12) for a brake actuator (10), comprising the following features:a drive element (33),a first driven element (36),a second driven element (38), anda gearing output element (40),wherein, with respect to the drive element (33), the first driven element (36) has a different transmission ratio than the second driven element (38),wherein the first driven element (36) can be coupled to the gearing output element (40) by a first clutch (42), which comprises a first drive body (50) and a first driven body (52), andwherein the second driven element (38) can be coupled to the gearing output element (40) by a second clutch (46), which comprises a second drive body (62) and a second driven body (64) and is designed as an overrunning clutch,and a brake actuator (10) comprising a gearing assembly (12).

The utility model discloses a power transmission system for a vehicle and the vehicle, the power transmission system comprises a first power unit, a second power unit, a third power unit and a fourth power unit, the planetary gear train comprises a sun gear and a planet carrier, a first planet gear and a second planet gear which rotate synchronously are arranged on the planet carrier, and the first planet gear is meshed with the sun gear; the gear ring is meshed with the second planet gear; the gear shifting assembly is provided with a power input end and a power output end, the power input end is linked with the planet carrier, and the transmission ratio of the power input end to the power output end is adjustable; the differential mechanism is provided with a differential mechanism input gear, a first half shaft and a second half shaft, the first half shaft and the second half shaft are in differential connection with the differential mechanism input gear, and the differential mechanism input gear is in power connection with the power output end. By arranging the planetary gear train, power multi-stage speed reduction is achieved, a hub reduction gear is omitted, the chassis space is saved, power multi-gear speed change is achieved through the gear shifting assembly, the power interval is widened, and energy consumption is reduced.

The ultra-miniature harmonic speed reducer with the double-flexible-gear structure comprises a steel wheel, an input shaft, a supporting bearing structure, a multi-stage flexible gear structure and an output shaft, an upper cover and a lower cover are fixedly installed on the upper side and the lower side of the steel wheel correspondingly, and the input shaft and the output shaft are rotationally connected with the steel wheel through the supporting bearing structure; the input shaft and the output shaft are in driving connection through a multi-stage flexible gear structure, and the multi-stage flexible gear structure is formed by connecting a plurality of flexible gear structures in series. The harmonic speed reducer is provided with the double flexible gear structures which are connected in series, the harmonic speed reducer is large in transmission ratio, high in bearing capacity and high in transmission precision, and compared with a traditional harmonic speed reducer, the harmonic speed reducer can be of an ultra-micro structure, has the high transmission ratio and large torque, can be suitable for the small-space use environment, is higher in applicability and has the good market prospect in the field of miniature equipment.

An assembly of an electric bicycle (F) comprises a drive system (A), which has a control device (2), a transmission (3) which can be adjusted for setting a gear ratio, and an electric drive motor (4) for providing an electromotive support torque at the transmission (3), wherein the control device (2) is designed to set the gear ratio of the transmission (3) based on a target pedal frequency value (Tsw, Tsw'). The control device (2) is also designed to change the target pedal frequency value (T sw, T sw') based on at least one driving situation parameter (FS) indicating a driving situation.

The invention provides a multi-gear electric drive axle system, a combined structure and a vehicle. The multi-gear electric drive axle system comprises a motor, a differential mechanism, an output shaft, a first intermediate shaft, a second intermediate shaft and a third intermediate shaft. The motor inputs power through the first intermediate shaft, the third intermediate shaft and the second intermediate shaft in sequence, and the third intermediate shaft is hollowly sleeved on the output shaft; a first gear set and a first gear shifting mechanism are arranged on the third intermediate shaft; a second gear set, a second gear shifting mechanism and a third transmission gear are arranged on the second intermediate shaft, and the third transmission gear is meshed with the differential mechanism; gears in the first gear set are kept in a constant meshing state with corresponding gears in the second gear set to form a plurality of transmission gear pairs, and the transmission gear pairs have different transmission ratios; through different combination states of the first gear shifting mechanism, the second gear shifting mechanism and the corresponding gear sets, power transmission of multiple different gears can be achieved.

The invention belongs to the technical field of new energy automobile transmission, and particularly discloses a double-gear electric drive axle system and a gear shifting control method.The system mainly comprises a drive motor, a first-stage gear pair, a second-stage gear pair, a synchronizer and a planetary gear mechanism, and high-gear and low-gear switching is achieved through axial movement of the synchronizer. At a high gear, a gear ring of the planetary gear mechanism is jointed with the sun gear, and the transmission ratio is 1; in the low gear, the gear ring is locked, and speed reduction transmission is achieved. The gear shifting control method comprises a gear upshift process and a gear downshift process, and gear shifting without power interruption is achieved through the steps of torque clearing, gear disengagement, rotating speed adjustment, gear engagement, torque recovery and the like. The multi-gear biased electric drive axle has the technical advantages of simple and compact mechanical structure, easiness in control, uninterrupted power and the like, and meanwhile, the drive axle adopts the countershaft to perform coaxial biased arrangement, so that the problem of intensified mass center bias of the multi-gear biased electric drive axle is relieved, direct connection of a high-speed motor and a planetary gear mechanism is avoided, and the problems of uneven load and NVH of planetary gears are solved.

The invention relates to a cooperative control method for front and rear wheel turning angles of a drive-by-wire four-wheel steering vehicle, which belongs to the technical field of vehicle dynamics control, and comprises the following steps of: S1, designing a variable angle transmission ratio of the drive-by-wire front wheel steering vehicle on the basis of invariable steady-state yaw velocity gain; s2, calculating a target side slip angle and a target yaw velocity of the drive-by-wire front wheel steering vehicle based on a given steering wheel angle input; and S3, generating a front wheel steering angle and a rear wheel steering angle of the drive-by-wire four-wheel steering vehicle by taking the dynamic output of the front wheel steering vehicle as a target based on a multi-objective optimization framework of model predictive control MPC. The control inconsistency of the steering system caused by the change of the vehicle speed is avoided, the steering characteristics of the front wheel steer-by-wire vehicle can be accurately tracked, and the driving burden is effectively reduced.

The disclosure relates to a transmission system for a human powered vehicle, or light electric vehicle, comprising a crank housing, a crank axle, a front sprocket mounted to an output shaft concentric with the crank axle, and a transmission having an input connected to the crank axle and an output connected to the output shaft. The transmission comprises a planetary gear system, configured to be operated according one of a plurality of different selectable transmission ratios, mounted on a lay shaft which is offset and parallel to the crank axle, and an input transmission stage for transmitting torque from the crank axle to an input of the planetary gear system, wherein the input transmission stage has a speed increasing transmission ratio.

The present application relates to the technical field of speed reducer, especially to a hollow composite planetary speed reducer, which comprises a machine shell, an input shaft rotatably connected to the machine shell, a sun gear fixedly connected to the input shaft, an outer gear ring installed in the machine shell, three planetary gears meshing between the outer gear ring and the sun gear, a planetary carrier rotatably connected to the three planetary gears, a worm fixedly connected to the planetary carrier, a rotating shaft rotatably connected to the machine shell, a worm wheel meshing with the worm and fixedly connected to the rotating shaft, and an output shaft rotatably connected to the rotating shaft. The present application combines the planetary speed reducer with the worm and worm gear speed reducer to form a composite speed reducer, which solves the self-locking defect of the planetary speed reducer and the low efficiency problem of the worm and worm gear speed reducer, and realizes secondary speed reduction, thereby increasing the transmission ratio and reducing the overall size of the device, improving the working efficiency and safety of the speed reducer.

The invention relates to the technical field of steer-by-wire, and discloses a steering wheel and steering angle alignment method and device for a steering wheel end and a vehicle. In the process that the steering wheel is controlled to rotate in the first direction based on the initial transmission ratio and the steering angle of the steering wheel end, a steering wheel clamping stagnation signal is detected; determining the current steering angle of the steering wheel as a first clamping stagnation angle; the steering wheel is controlled to rotate in the second direction based on the first tail end angle, whether clamping stagnation exists in the rotating process of the steering wheel or not is monitored, the first clamping stagnation angle and the first tail end angle or the first clamping stagnation angle and the second clamping stagnation angle form a non-clamping stagnation angle range of the steering wheel, and the target transmission ratio is calculated; and determining a target angle based on the target transmission ratio and the steering angle of the steering wheel end, and controlling the steering wheel to rotate by the target angle in the first direction, so that the steering angle of the steering wheel is aligned with the steering angle of the steering wheel end, and the vehicle can still be safely driven when the steering wheel is blocked.

The present invention relates to a transmission device for a steering system. The steering system includes a transmission unit with a rotatable first gear element, which may be driven by a drive. The steering system also includes a rotatable second gear element, which is operatively connected to the first gear element for transmitting the drive movement as a function of a transmission ratio between the first and second gear elements. A monitoring unit is further included for monitoring the transmission unit with a detection means for detecting an actuated rotational position of the transmission unit when transmitting the drive movement within a predefined rotational range. The invention also relates to a steering system, a method, and a computer program product.