1235results about "Controlled members" patented technology

A vehicle drive unit has an electric machine and a manual gearbox with first and second shift elements and two planetary gear sets coupled to one another. Each gear set has a sun shaft, a ring gear shaft, and a web shaft. The second sun shaft is drivable by the electric machine and is configured as an output of the shift gear. The second ring gear shaft is connected rotationally fixed to the first web shaft, and the first sun shaft is connected rotationally fixed to a stationary component. When actuated, the first shift element connects the first ring gear shaft to an element of the first planetary gear set and / or of the second planetary gear set. When actuated, the second shift element connects the first ring gear shaft rotationally fixed to the second sun shaft or the second web shaft in order to shift a second gear.

The present invention relates to a dual clutch engine of a straddle type vehicle, comprising: a first clutch and a second clutch disposed on both left and right sides of an engine case; the main shaft comprises a first input shaft and a second input shaft which are separated from each other and coaxially arranged, the first clutch is connected with the first side of the first input shaft, the second clutch is connected with the second side of the second input shaft, and the first input shaft and the second input shaft are integrally located between the first clutch and the second clutch. According to the scheme, the layout of the first clutch, the second clutch and the gear shifting gear pair is improved, so that troubleshooting is facilitated.

The invention discloses a compact-structure transmission which comprises a gearbox body, a torque converter is mounted on the outer side of the gearbox body, a turbine shaft of the torque converter is connected with a clutch shaft on the gearbox body, and the clutch shaft, a first idler shaft, a second idler shaft, a front axle gear shifting output shaft and a rear axle output shaft are arranged in the gearbox body; the clutch shaft is movably connected with a first gear and a second gear through bearings, a third gear and a fourth gear are fixed or formed on the first idler shaft, and a fifth gear, a sixth gear, a seventh gear and an eighth gear are fixed or formed on the second idler shaft. The front axle gear shifting output shaft is movably connected with a ninth gear, a tenth gear, an eleventh gear and a twelfth gear; a manual control mechanical gear shifting structure and a wet clutch control reversing structure are adopted, multi-gear advancing and retreating are achieved, the size is small, and occupied space is small.

The invention relates to the technical field of transmission control, in particular to a mechanical gear shifting mechanism with a multi-gear switching function and a control method thereof.The mechanical gear shifting mechanism comprises a main body frame, a rotary shifting block assembly is arranged on the main body frame, and a shifting fork linkage assembly is arranged on the rotary shifting block assembly; a positioning assembly is arranged in the shifting fork linkage assembly, and a power output assembly is arranged on the shifting fork linkage assembly. The rotary shifting block assembly is arranged, the shifting block body is of an asymmetric multi-curved-surface structure, and a high-gear curved-surface groove, a first neutral-gear curved-surface groove, a low-gear curved-surface groove, a second neutral-gear curved-surface groove, a middle-gear curved-surface groove and a third neutral-gear curved-surface groove form a composite guide groove, so that a user is allowed to complete multi-gear switching in single rotation operation; an efficient and flexible power transmission and guide mechanism is provided for gear shifting operation, the convenience of gear shifting operation is greatly improved, and the gear shifting process is smoother and more natural.

The utility model provides an electric gear shifting executing mechanism, which relates to the field of gear shifting executing mechanisms, and adopts the technical scheme that the electric gear shifting executing mechanism comprises a driving motor, the driving motor can drive a shifting fork to linearly move, a shifting fork shaft is arranged at the upper end of the shifting fork, and the shifting fork can drive the shifting fork shaft to move. A plurality of locking holes are formed in the outer circumference of the shifting fork shaft, the locking holes are arranged in the axial direction of the shifting fork shaft, the locking holes correspond to corresponding gears, the positioning assembly comprises a shell, the end of the shifting fork shaft is arranged in the shell in an axial moving mode, a spring pin is arranged in the shell, and the spring pin is arranged in the shell. And the spring pin can extend into the locking hole. The utility model has the advantages of simple structure and higher reliability.

An integrated transmission gearshift mechanism and a gearshift system. The integrated transmission gearshift mechanism comprises a gearshift electric motor (1) for inputting power, a gearshift hub assembly (2) for pushing gearshift fork assemblies (3) to implement gear shifting, a single-stage planetary gearset reducer mechanism located between the gearshift electric motor (1) and the gearshift hub assembly (2) to implement power transmission, and the gearshift fork assemblies (3) cooperating with the gearshift hub assembly (2). Compared with a traditional complex two-stage planetary gearset reducer mechanism, the single-stage planetary gearset reducer mechanism uses a single planet carrier and a single sun gear, and a left planet gear (7.1) and a right planet gear (7.2) have a one-piece structure; and the right planet gear (7.2) replaces a right sun gear having a low strength to transmit a torque. The integrated transmission gearshift mechanism has a simple and compact structure, and has a larger torsional capacity. According to the gearshift phase logic of the gearshift hub assembly, a gearshift sliding rail cooperates with a plurality of gearshift fork assemblies to implement the control of a plurality of gears, and thus the axial dimension of the gearshift hub assembly can be reduced, which is beneficial for the system layout of the whole machine, and can also reduce the cost.

A transmission system (300), including: a first gear selector assembly (329), wherein the first gear selector assembly (329) includes a first selector ring (54) and a second selector ring (56), the first and second selector rings (54,56) being movable translationally relative to one another; wherein the first selector ring (54) includes a first set of engagement members (45) fixed together by a first annular member (53), and each engagement member in the first set (45) includes a first part (59) located on a first side of the first annular member (53) and a second part (61) located on a second side of the first annular member (53), each first part (59) having a first drive face (67) oriented generally in a first rotational direction and a first non-drive face (69) oriented generally in a second rotational direction, and each second part (61) includes a second drive face (67) oriented generally in the first rotational direction and a second non-drive face (69) oriented generally in the second rotational direction; and wherein the second selector ring (56) includes a second set of engagement members (46) fixed together by a second annular member (55), and each engagement member in the second set (46) includes a first part (63) located on a first side of the second annular member (55) and a second part (71) located on a second side of the second annular member (55), each first part (69) having a first drive face (67) oriented generally in the second rotational direction and a first non-drive face (69) oriented generally in the first rotational direction, and each second part (71) includes a second drive face (67) oriented generally in the second rotational direction and a second non-drive face (69) oriented generally in the first rotational direction.

The utility model discloses a gear shifting device of a robot gearbox, which comprises a driving shaft, a middle shaft and a shifting fork shaft which are arranged in the gearbox, a plurality of driving gears which synchronously rotate with the driving shaft are arranged on the driving shaft, and a plurality of driven gears which are correspondingly meshed with the driving gears are sleeved on the middle shaft. A synchronizer corresponding to each driven gear is further arranged on the middle shaft, a shifting fork capable of shifting the synchronizers to slide in the axial direction of the middle shaft and locking the synchronizers and the corresponding driven gears is arranged on the shifting fork shaft, and a gear shifting driving mechanism which is driven by a motor and enables the shifting fork shaft to push and pull in the axial direction to achieve the gear shifting action is arranged outside the gearbox. The gear shifting driving mechanism is an elastic gear shifting mechanism which has a bidirectional elastic buffering effect in the push-pull direction of the shifting fork shaft. In the gear shifting process of the gear shifting device of the robot gearbox, the synchronizer and the driven gear are locked after being in elastic contact, damage caused by rigid collision between the synchronizer and the gear in the gear shifting process can be avoided, and non-stop gear shifting can be achieved.

The invention discloses a gear shifting mechanism, a transmission, an electric assembly and a vehicle. The gear shifting mechanism comprises a first-gear gear, a second-gear gear and a shifting fork. The first-gear gear and the second-gear gear are arranged in a spaced mode in the first direction. The shifting fork can move in the first direction and is used for being matched with a first-gear gear or a second-gear gear, a first oil channel and a second oil channel are formed in the shifting fork, a first oil outlet of the first oil channel is used for supplying oil to the side, facing the second-gear gear, of the first-gear gear, and a second oil outlet of the second oil channel is used for supplying oil to the side, facing the first-gear gear, of the second-gear gear. A first oil inlet of the first oil duct is automatically opened when shifting to the first-gear gear, and is automatically closed before shifting to the first-gear gear and after shifting; and a second oil inlet of the second oil duct is automatically opened when shifting the gear to the second-gear gear, and is automatically closed before shifting the gear to the second-gear gear and after shifting the gear. According to the gear shifting mechanism, the lubricating and cooling effects can be guaranteed through the gear shifting mechanism, circulation and disconnection of lubricating oil can be achieved without participation of a control mechanism, and therefore the cost is reduced.

The invention relates to the technical field of hybrid gearbox manufacturing, in particular to a gear shifting executing mechanism suitable for a hybrid gearbox. The gear shifting shaft is assembled in the hybrid gearbox body, and the axial displacement freedom degree of the gear shifting shaft is not limited. The gear shifting shaft is sleeved with the force transmission piece, and the axial displacement stroke of the force transmission piece is limited within a set interval. The elastic piece is arranged on the gear shifting shaft in a sleeving mode and is elastically compressed between the force transmission piece and the limiting ring. In the gear shifting synchronization process, the force transmission piece performs displacement movement along the gear shifting shaft in a set stroke interval, meanwhile, the elastic piece elastically deforms due to compression, or after gear shifting operation is completed, impact energy pre-applied to the gear shifting fork by the gear sleeve is partially converted into kinetic energy of the gear shifting shaft, and the kinetic energy is converted into kinetic energy of the gear shifting shaft. And the gear shifting fork performs self-avoiding motion under the action of instantaneous impact force, so that the phenomenon that the force transmission piece and the gear shifting fork are damaged due to the action of rigid impact force is avoided.

The invention discloses a variable eccentric gear, a novel clutch device with the variable eccentric gear and a transmission, the biggest difference between the novel clutch device and the prior art is that the novel clutch device adopts a normally engaged gear structure, and the novel clutch device can be used on the transmission to form the transmission with a brand new technical route.

The invention relates to a vehicle gear shifting control method and device, electronic equipment and a storage medium, and the method comprises the steps that under the condition that it is detected that a vehicle has a gear shifting demand, the vehicle is shifted from a current gear to a neutral gear, and the rotating speed of an output shaft of the vehicle under the neutral gear condition is collected; the speed ratio corresponding to the current gear and the speed ratio corresponding to the target gear are obtained, and based on the rotating speed of the output shaft, the speed ratio corresponding to the current gear and the speed ratio corresponding to the target gear, the target rotating speed of the vehicle motor is obtained through calculation; the current rotating speed of the vehicle motor is obtained, and whether the preset gear engaging condition is met or not is determined according to the current rotating speed of the vehicle motor and the target rotating speed of the vehicle motor; and under the condition that the preset gear engaging condition is met, the position of the gear shifting fork is obtained, and the target current of the gear shifting actuator is determined according to the position of the gear shifting fork, so that the gear shifting actuator converts the gear of the vehicle from the current gear to the target gear based on the target current of the gear shifting actuator. In this way, the intelligent degree of gear shifting can be improved.

The utility model discloses a gearbox and an agricultural mini-tiller thereof, and belongs to the technical field of agricultural mini-tillers. The gearbox comprises a gearbox body; the transmission assembly comprises a first shaft, a second shaft, a third shaft, a reverse gear shaft, a steering shaft, a driving shaft and a transition shaft; the transmission assembly is rotationally arranged in the gearbox body; the second shaft, the third shaft, the steering shaft and the driving shaft are sequentially in transmission connection; the first shaft, the reverse gear shaft, the second shaft, the third shaft, the steering shaft and the driving shaft are sequentially distributed from the top to the bottom of the gearbox body. The transition shaft is in transmission connection with the second shaft; the transmission assembly is provided with a walking gear and a reverse gear, the first shaft is in transmission connection with the second shaft in the walking gear, and the first shaft, the reverse gear shaft and the second shaft are in transmission connection in sequence in the reverse gear. The gearbox is simple in overall structure, the functions of first-gear walking, second-gear walking, reverse gear, low-gear speed change, high-gear speed change, steering and the like of the mini-tiller can be achieved only by adopting the shaft for transmission of the gearbox, the number of used parts is small, the size of the gearbox is effectively reduced, and the weight of the gearbox is reduced.

A disconnect system for selectively coupling or disconnecting a drive member and a driven member. The disconnect system includes a clutch ring rotationally coupled to a drive member, a solenoid actuator, and a shift fork coupled to the clutch ring and configured to be pivotally moved by the solenoid actuator. The shift fork configured to be selectively moved by the solenoid actuator to transition the clutch ring between an engaged position where the clutch ring is rotationally coupled to a driven member and a disengaged position where the clutch ring is disconnected from the driven member.

The invention provides a differential mechanism and a vehicle. In the differential mechanism, the sliding sleeve is driven by the driving mechanism to move relative to the output gear, so that the differential mechanism is located at a first gear, a second gear or a third gear. The first clutch unit is connected, and the sliding sleeve is in transmission connection with a half shaft of the vehicle through the first clutch unit. The second clutch unit is connected, and the sliding sleeve is in transmission connection with the input gear through the second clutch unit. When the differential mechanism is in the first gear, the first clutch unit and the second clutch unit are separated; when the differential mechanism is located at the second gear, the first clutch unit is connected, and the second clutch unit is separated; and when the differential mechanism is located at the third gear, the first clutch unit and the second clutch unit are both connected. In this way, the differential mechanism achieves both a power interruption function and a slip limiting function with a relatively simple structure, so that the structure of the vehicle including the differential mechanism can be relatively simple and low-cost.

A cam actuation assembly, the cam actuation assembly comprising: an actuation cam; the cam actuating assembly comprises an actuating cam, an intermediate rotating member capable of rotating around a rotation axis and engaged with the actuating cam to drive the actuating cam to rotate around the rotation axis, and a fixing pin inserted into and passing through both the actuating cam and the intermediate rotating member, and the actuating cam and the middle rotating piece are kept relatively fixed in the direction of the rotating axis. The utility model further provides an actuator comprising the cam actuating assembly and a transmission comprising the actuator.

The invention relates to the technical field of new energy commercial vehicle transmission systems, in particular to a distributed planet row gear shifting structure and a gear shifting mode thereof.The distributed planet row gear shifting structure comprises a driving mechanism, an integrated gear shifting sliding sleeve, a gear ring, a planet carrier, a planet wheel, a sun wheel and a half shaft; the integrated gear shifting sliding sleeve is movably installed on the side portion of the planet carrier, and the planet carrier is connected with the half shaft and used for outputting power to the wheel end. By the adoption of the distributed planet row structure, switching of two gears can be achieved, gear switching can be conducted according to the comprehensive requirements for the dynamic property and economical efficiency of the whole vehicle, a transmission shaft and a differential mechanism in a traditional central driving structure are omitted, energy consumption is further reduced, the torque density of the planet row structure is higher than that of a parallel shaft structure, and the torque density of the planet row structure is higher than that of the parallel shaft structure. And multiple groups of meshing functions are integrated through the integrated gear shifting sliding sleeve, the number of parts is reduced, the overall size is reduced, the weight is reduced, and the layout requirements of light weight and small space of the new energy commercial vehicle are met.

The invention relates to an AMT (Automated Mechanical Transmission), in particular to an AMT system and a control method thereof, which are used for solving the problems that the existing AMT system has certain defects in the aspects of clutch control, accurate control in a gear shifting process, stability of a self-locking device and comprehensive application of a sensor, so that the gear shifting precision, the response speed and the stability are insufficient. According to the AMT system, the integrated gear selecting and shifting executing mechanism is adopted, and compared with an externally-hung control system, the integrated gear selecting and shifting executing mechanism can improve the gear taking-off and gear shifting response speed of the system, reduce electric control wire harnesses and gas circuit arrangement and greatly reduce the system failure rate.

The invention belongs to the field of AMT transmissions, and discloses a gear selecting and shifting mechanism for an AMT and a working method thereof, the gear selecting and shifting mechanism comprises a gear selecting and shifting executing mechanism, a main box shifting fork shaft and an auxiliary box shifting fork shaft; a main gear shifting air cylinder, a rear auxiliary box air cylinder and a gear selecting air cylinder are arranged on the gear selecting and shifting executing mechanism, a gear shifting fork clamping groove is formed in the main gear shifting air cylinder in the axial direction, an auxiliary box air cylinder shaft shifting block is arranged on the rear auxiliary box air cylinder in the axial direction, and the auxiliary box air cylinder shaft shifting block is connected with an auxiliary box shifting fork shaft. A gear selecting shifting finger notch and a spiral spring are arranged at one end of the gear selecting air cylinder, a gear shifting fork, a gear shifting block and an interlocking block are arranged on the main box shifting fork shaft, the interlocking block is fixed to the main box shifting fork shaft through a gear shifting block, the gear shifting block is installed in a gear shifting fork clamping groove, and the interlocking block is matched with the gear selecting shifting finger notch. The device is simple in structure and convenient to assemble, the axial length and height are shortened to the maximum extent, and the overall stability and reliability of a system are improved.

The utility model relates to the technical field of agriculture or forest machinery, in particular to a tractor gearbox with a rear-mounted main gear lever and a rear-mounted auxiliary gear lever. Comprising a gearbox shell, a shaft I and a shaft II, the shaft I and the shaft II are installed in the gearbox shell through bearings, the shaft II is parallel to the shaft I and is in transmission connection with the shaft I through a transmission gear, a shifting fork shaft is arranged above the shaft II, a shifting fork is fixedly installed on the shifting fork shaft, and the rear end of the gearbox shell is fixedly connected with a rear box body. A first variable-speed sliding rod and a second variable-speed sliding rod are installed in the rear box body, and the first variable-speed sliding rod and the second variable-speed sliding rod are both perpendicular to the shifting fork shaft. The gearbox is reasonable in structural layout and high in reliability, the main gear lever and the auxiliary gear lever can be properly arranged at the rear position, operation of a driver is facilitated, and misoperation is avoided.

The invention relates to an auxiliary transmission, a main transmission and a vehicle, the auxiliary transmission comprises an intermediate shaft, one end of the intermediate shaft is in spline connection with an output shaft, and the outer wall of the other end of the intermediate shaft is sleeved with a second input gear; the planetary gear shaft is arranged on the outer wall of the intermediate shaft in a sleeving mode, one end of the planetary gear shaft is meshed with a planet carrier assembly, and the outer wall of the other end of the planetary gear shaft is sleeved with a first input gear; one end of the synchronizer assembly is in spline connection with the output shaft, the other end of the synchronizer assembly is in spline connection with the planet carrier assembly, and the synchronizer assembly is used for power connection or power disconnection of the planet carrier assembly and the intermediate shaft. The problems that a planetary gear assembly (a planetary gear shaft and a planetary carrier assembly) of a traditional auxiliary transmission is always in a running state, abrasion of a planetary gear is accelerated, the service life is shortened, the transmission efficiency is reduced, and frequent maintenance and replacement of parts are needed when the traditional auxiliary transmission works in a speed reduction output mode or a direct output mode can be solved.

The utility model provides a long-service-life shifting fork assembly, and belongs to the technical field of shifting forks. A long-service-life shifting fork assembly comprises a shifting fork, a shifting fork shaft is installed in the middle of the shifting fork, two feet of the shifting fork drive a shifting rod to move, and sliding plate assemblies are arranged on the inner walls of the two feet of the shifting fork in a sliding mode. The sliding plate assembly comprises a clamping block sliding in the shifting fork, protruding parts are arranged on the end faces of the two sides of the clamping block, a plurality of balls are further arranged in the shifting fork in a rolling mode, and the protruding parts of the two sides of the clamping block are clamped between the two corresponding balls. Through rolling friction of the balls, previous sliding friction of the shifting fork is changed into rolling friction, so that friction force of the shifting fork is greatly reduced, abrasion of the shifting fork is reduced, and the service life of the shifting fork is prolonged.

The invention relates to a disengagement device, in particular to a mechanical disengagement device for a subway gear box, and solves the problems that according to an existing speed reducer dynamic disengagement device, when inner teeth of a gear sleeve are combined with outer teeth of combination teeth, a synchronous ring is used for a long time, friction force is reduced, and the failure rate is increased. The outer spline section is arranged on the axle, the out-of-gear sliding sleeve is meshed with the outer spline section of the axle through the inner spline on the inner wall and is in sliding fit with the axle in the axial direction, and when the traction motor breaks down, the shifting fork is driven by the executing mechanism to shift the out-of-gear sliding sleeve, so that the outer spline of the out-of-gear sliding sleeve is separated from the inner spline of the sliding groove of the driven gear; at the moment, torque is input from the axle and transmitted into the out-of-gear sliding sleeve, the out-of-gear sliding sleeve is not meshed with the driven gear any more, the driven gear is only rotationally connected with the axle, torque transmission is interrupted, the structure is simple, meshing of the out-of-gear sliding sleeve and the driven gear does not need a synchronizing ring, and fault points are reduced.

The utility model belongs to the technical field of agricultural machinery transmission systems, and particularly relates to a front drive axle assembly of a hydraulic stepless speed change harvester, which comprises a gearbox body, a first shaft, a second shaft, a third shaft, a left half shaft and a right half shaft of a differential assembly are rotatably connected in the gearbox body, and the first shaft is in transmission connection with an output end of a hydraulic stepless speed change motor. The first shaft is sleeved with a first shaft gear A, the second shaft is sleeved with a first-stage speed reduction driven gear, the second shaft and the third shaft are in transmission fit through a gear position gear assembly, the third shaft is sleeved with a third shaft gear A, a left half shaft and a right half shaft of the differential mechanism assembly are in transmission connection with the tail end transmission box assembly, and one end of the third shaft extends out of the gearbox body to form a four-wheel drive reserved end. According to the utility model, a transmission mechanism which is driven by the hydraulic stepless variable-speed motor and is provided with multi-gear speed change is adopted, so that the requirements of simple operation and stable and reliable transmission are met, and a four-wheel-drive reserved end which can be in transmission fit with a four-wheel-drive transfer case is reserved, so that the complete machine can be ensured to have enough driving force.

The invention discloses a transmission assembly, and relates to the technical field of automobile transmission. The transmission assembly comprises a front axle frame, a main speed reducer, a front axle transmission shaft, an engine, a gearbox, a transfer case, a rear axle transmission shaft, a spray pump transmission shaft, a rear axle frame and a water-jet propeller, the gearbox is connected between the engine and the transfer case, and the main speed reducer is connected between the front axle frame and the front axle transmission shaft. According to the transmission assembly, the amphibious gear shifting operation function can be achieved through the arrangement of the transfer case and the specific design of the transfer case, power sent by the engine is also sequentially transmitted into the gearbox and then transmitted into the transfer case, gears are controlled by shifting the transfer rod, the engine can transmit the power to the spray pump transmission shaft, and the transmission efficiency is improved. When the vehicle runs, the spraying pump transmission shaft transmits power to the water spraying propeller, so that the water power transmission process is completed, the power of the engine can be switched between a water mode and a land mode, and the adaptive capacity of the vehicle in different environments is improved.

The utility model relates to a gear shifting executing mechanism. The device comprises a driving motor, the transmission assembly is driven by the driving motor to rotate and comprises a first coupler and a second coupler which are coaxially arranged, the second coupler is connected with a gear shifting driving part, the first coupler comprises first teeth arranged at intervals in the annular direction, and the second coupler comprises second teeth arranged at intervals in the annular direction; the second coupler comprises second teeth which are arranged in the annular direction and extend into the positions between the adjacent first teeth. Gaps are formed between the first teeth and the second teeth in the rotating direction, and elastic pieces are arranged in the gaps. The shifting fork is connected with the gear shifting driving part; when the first coupler rotates, the second coupler can be driven to rotate so as to extrude the elastic piece, and meanwhile the shifting fork is driven by the gear shifting driving part to conduct gear shifting. According to the actuating mechanism, the influence of impact generated in the gear shifting process of an automobile gearbox, an electric drive axle and the like on transmission parts in the actuating mechanism can be reduced.

The invention provides a learning method and system for the hard dead center position of a vehicle disconnecting mechanism and a vehicle, and belongs to the technical field of vehicles. The method comprises the steps that a rotating motor is controlled to rotate to drive a shifting fork to move towards the hard dead center position on a synchronizer assembly; first information and second information of the rotating motor in the rotating process and the moving position of the shifting fork are obtained; wherein the first information comprises the rotation direction and the rotation angle, and the second information comprises the working current; based on the first information, the second information and the moving position, locked-rotor detection is conducted on the hard dead center; and based on a detection result, determining whether to exit learning of the hard dead center position. The learning method for the hard dead center position of the vehicle disconnecting mechanism is applied to the disconnecting mechanism, and smooth and reliable gear shifting of the disconnecting mechanism can be guaranteed.

The invention relates to an electric gear shifting system and a vehicle, and the electric gear shifting system comprises a gear shifting actuator which is provided with a shifting block capable of doing pendulum type movement; the shifting fork shaft is fixedly installed on a shell of the electric gear shifting system; the shifting fork is arranged on the shifting fork shaft in a sleeving mode in an axial moving mode, and the shifting fork is movably connected with the shifting block; the pendulum type movement of the shifting block is used for pushing the gear shifting fork to axially move on the shifting fork shaft, and the gear shifting fork is used for pushing the gear sleeve to axially move, so that gear shifting is achieved.

The invention relates to the technical field of transmission structures, in particular to a power takeoff assembly, a shell is provided with a gear supporting shaft and an output shaft in a penetrating mode, the gear supporting shaft is rotationally sleeved with a power takeoff driving gear, and the power takeoff driving gear is in gear meshing with a gearbox to obtain power; the periphery of the output shaft is movably sleeved with an output gear, and the output gear is connected with the power take-off driving gear in a meshed mode. A coupling mechanism is arranged on the output gear and is used for coupling and separating the output gear and the output shaft; output bearing covers are arranged at the positions, corresponding to the two ends of the output shaft, of the shell, supporting blocks are arranged on the sides, facing the interior of the shell, of the output bearing covers, and the supporting blocks make contact with the peripheral faces of bearings supporting the ends of the output shaft. When the output bearing cover is installed, the output bearing cover is positively installed or reversely installed, so that the axis position of the output shaft is located at different heights, under the two conditions, the output gear with the proper size and tooth shape is selected to be meshed with the power take-off driving gear, and the output shaft can output different torques.