815results about "Controlled members" patented technology

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.

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 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.

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 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 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 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 utility model relates to the technical field of mini-tiller transmission cases, and discloses a transmission case applied to a mini-tiller, which comprises a driving shaft, a driven shaft and an auxiliary shaft, the driving shaft, the driven shaft and the auxiliary shaft are parallel in different planes, and a first gear, a second gear, a third gear and a fourth gear are sequentially sleeved on the driving shaft in an empty mode. The driven shaft is fixedly connected with a first driven gear, a second driven gear, a third driven gear and a fourth driven gear in sequence, and the auxiliary shaft is sleeved with a reversing gear in an empty mode; the reversing gear is constantly meshed with the first gear and the first driven gear, the second gear is constantly meshed with the second driven gear, the third gear is constantly meshed with the third driven gear, and the fourth gear is constantly meshed with the fourth driven gear. Two gear shifting wheels located between the first gear and the second gear and between the third gear and the fourth gear are fixedly connected to the driving shaft. Friction between tooth surfaces of the gear can be reduced, abrasion of the gear is relieved, and the service life of the gear is prolonged.

The invention provides a neutral position dynamic learning method, which is characterized in that the neutral position of a shifting fork on a screw rod is a first neutral position, and comprises the following steps: controlling the shifting fork to move from the first neutral position to a first gear direction, and when the rotating speed change rate of a driving motor is greater than a first preset change rate, the position of the shifting fork is a first shifting fork position; the shifting fork is controlled to move from the first neutral position to the second gear position, when the rotating speed change rate of the driving motor is larger than a second preset change rate, the position where the shifting fork is located is the second shifting fork position, and the second gear and the first gear correspond to the opposite direction; determining a second neutral position according to the first shifting fork position and the second shifting fork position; and determining a target neutral position at least according to the second neutral position. The neutral position is monitored and dynamically learned, so that gear position changes caused by abrasion and other factors in the whole life cycle process of a gear shifting assembly can be well adapted, the accuracy of the neutral position is guaranteed, and the driving safety is improved.

The present invention discloses a micro electric four-wheel drive loader gearbox, specifically relating to the technical field of gearboxes. It includes a box body. On one side inside the box body, an input shaft is fixedly installed. On the other side inside the box body, an output shaft is fixedly installed. In the middle of the box body, a speed-changing shaft is fixedly arranged. The input shaft, the output shaft, and the speed-changing shaft are all arranged in parallel. In the middle of the speed-changing shaft, a meshing gear is fixedly arranged. On one side of the meshing gear, a fast gear is arranged. In the present invention, the fork rotating rod on the fork rotating shaft is connected to the fork groove on the fork sleeve, driving the switching of the first connecting gear and the second connecting gear on the connecting rotating cylinder. When the first connecting gear is meshed and matched with the fast gear on the speed-changing shaft, and when the second connecting gear is meshed and matched with the slow gear on the speed-changing shaft, it is convenient to switch between fast and slow gears, with a simple structure and convenient operation, facilitating the use of the gearbox.

The present invention proposes an integrated electronically controlled two-speed main reducer for Baja racing cars, which includes a high-speed shaft, a medium-speed shaft, and a low-speed shaft arranged in parallel and spaced apart in the left and right directions, and the high-speed shaft is respectively equipped with a high-speed high-speed gear driving gear and a high-speed low-speed gear driving gear. The medium-speed shaft is equipped with a medium-speed high-speed gear driven gear and a medium-speed low-speed gear driven gear; the medium-speed shaft is equipped with a shifting sleeve capable of sliding left and right between the first wheel hub and the second wheel hub; the low-speed shaft is equipped with a low-speed driven gear; the low-speed shaft is equipped with a differential, and the differential housing is arranged on the outer periphery of the differential, and the low-speed shaft is equipped with a locking sleeve capable of sliding leftward and meshing with the differential on the right side of the differential housing. The present invention integrates a reducer, a differential, and a differential lock, to achieve the purpose of integration and lightweight, and improve the adaptability of the racing car to terrain.

The application discloses a gear shifting mechanism, a transmission, an electric assembly and a vehicle. The gear shifting mechanism comprises a first gear, a second gear and a shift fork. The first gear and the second gear are arranged at intervals along a first direction. The shift fork is movable along the first direction and is used for cooperating with the first gear or the second gear. The shift fork is provided with a first oil passage and a second oil passage. A first oil outlet of the first oil passage is used for supplying oil to a side of the first gear facing the second gear. A second oil outlet of the second oil passage is used for supplying oil to a side of the second gear facing the first gear. A first oil inlet of the first oil passage is automatically opened when the first gear is shifted, and is automatically closed before the first gear is shifted and at the end of the shifting. A second oil inlet of the second oil passage is automatically opened when the second gear is shifted, and is automatically closed before the second gear is shifted and at the end of the shifting. According to the gear shifting mechanism, the gear shifting mechanism can guarantee lubrication and cooling effects, and the circulation and disconnection of lubricating oil can be realized without the participation of a control mechanism, so that the cost is reduced.

The invention relates to the field of gearboxes, in particular to a precise forced lubrication structure and method for a gear pair of a gearbox. Comprising an upper cover, fixed spraying holes and a plurality of shifting fork shafts. A lubricating oil channel is arranged in the upper cover and provided with an oil inlet communicated with an external oil source. The fixed spraying holes are formed in the upper cover and communicated with the lubricating oil channel, and lubricating oil is continuously sprayed to a long meshing gear pair in the gearbox. The multiple shifting fork shafts are installed on the gearbox, and an in-shaft oil duct extending in the axial direction is arranged in each shifting fork shaft. The upper cover is further provided with upper cover spraying holes corresponding to the shifting fork shafts, and the upper cover spraying holes are communicated with the lubricating oil channel. Each shifting fork shaft is provided with a shaft spraying hole, and the shaft spraying holes are communicated with the corresponding in-shaft oil way fluid. According to the invention, the problem of insufficient lubrication of key parts caused by ineffective dissipation of lubricating oil by an irrelevant gear pair is solved, and the lubrication reliability and heat dissipation efficiency of the key gear pair are greatly improved.

A gearbox actuator unit (14) is configured to be arranged on a gearbox (10) and includes a housing (22), a control device (24), and an actuator (28, 30). The housing (22) is configured to attach to a gearbox housing (12) and to seal the gearbox housing (12). The control device (24) is electrically connected to the actuator (28, 30) and activates the actuator (28, 30). A pinon of the actuator (28, 30) is configured to actuate a rack of a shift fork (18, 20) of the gearbox (10) and can be connected to the shift fork (18, 20) of the gearbox (10). The control device (24) and the actuator (28, 30) are arranged within the housing (22), with the pinion extending through an opening of the housing. A gearbox (10) with a housing (12) having an opening (44) receives the actuator unit (14), which closes and seals the opening (44).

The integrated AMT gear shifting air cylinder assembly comprises a shell, a piston sleeve is arranged in the shell, a shifting fork shaft is fixedly arranged in the piston sleeve, a gear shifting fork is arranged at the axial rear end of the shifting fork shaft in a sleeved mode, and a wave-shaped self-locking groove is formed in the outer wall of the top of the gear shifting fork; a front end cover is arranged at the axial front end of the shell, and the shell, the front end cover, the piston sleeve and the shifting fork shaft form a first air chamber. A rear end cover is arranged at the axial rear end of the shell; the shifting fork shaft and the piston shaft are integrally designed to be the shifting fork shaft, the shifting fork and the shifting fork shaft are integrally arranged in the shifting air cylinder assembly, the overall integration degree is high, the number of parts and part connection are reduced, the shifting rigidity is good, and the working reliability is higher. Meanwhile, the number of parts is reduced, the assembly process of the transmission is optimized, the weight and the cost are reduced, and the technical problems that an existing gear shifting mechanism is scattered in part arrangement, complex in assembly process and poor in gear shifting rigidity are solved.

The utility model discloses an emergency gear-shifting shifting fork system, relates to the technical field of power transmission devices, and aims to solve the problems that the load on a transmission shaft is relatively large and the transmission shaft vibrates and spreads to damage a gear-shifting shifting fork in emergency gear-shifting reconditioning. According to the emergency gear-shifting shifting fork system, the gear-shifting gear sleeve, the butt-joint gear sleeve and the emergency gear are arranged, so that the influence of environmental factors on emergency gear-shifting transmission is reduced, and the reliability of emergency gear-shifting transmission is improved; and the servicing weight of the emergency gear shifting fork structure is reduced, the load pressure of a gear shifting fork system on a power source is reduced, and the possibility that the power source of a transmission shaft is influenced by accidental transmission movement of an emergency gear shifting system is reduced. By arranging the limiting pin and the shifting fork shaft, the possibility that mechanical movement such as vibration of a transmission system spreads to emergency shifting is reduced, the possibility that the servicing state of an emergency gear shifting system fails is reduced, and the maintaining effect of the emergency function of gear shifting preparation is improved.

The utility model discloses a two-in-one multi-gear adjustment integrated gearbox which comprises a box body, an input shaft and an output shaft are rotationally installed on the box body, the input shaft and the output shaft are in transmission connection through a gear shifting adjustment structure, and the gear shifting adjustment structure is used for changing the transmission ratio between the input shaft and the output shaft; the gear shifting adjusting structure is arranged in the box body and comprises a transmission shaft, a planetary gear shifting mechanism and a gear shifting mechanism, the transmission shaft is rotationally arranged in the box body, the planetary gear shifting mechanism is in transmission connection between the input shaft and the transmission shaft, and the planetary gear shifting mechanism comprises a first state and a second state which can be switched mutually. When the gear box is used, various speed ratios can be adjusted, the requirements of different working scenes can be met, and the gear box has high flexibility and applicability.

This application provides a hydraulic shifting device, a transmission, and a vehicle. The hydraulic shifting device includes: a shift fork assembly, including a connected fork shaft and a shift fork; a hydraulic cylinder, including a cylinder body, a first piston, and a second piston, the first piston and the second piston being respectively disposed at the axial ends of the fork shaft, the first piston, the fork shaft, and the second piston being movably disposed inside the cylinder body along the axial direction of the fork shaft, and the interior of the cylinder body being divided into a first oil chamber, a fork shaft chamber, and a second oil chamber; and a gear locking mechanism, installed in the cylinder body, the gear locking mechanism being configured to be able to move radially along the fork shaft, thereby locking or releasing the fork shaft. With this configuration, when the fork shaft is locked by the gear locking mechanism, the fork shaft cannot move along its own axial direction, realizing the function of limiting gear position and preventing disengagement. Compared with using a reverse bevel gear meshing method between the synchronizer and the engagement gear, the tooth flank clearance between the synchronizer and the engagement gear is reduced, which helps to reduce knocking noise when in gear.

The invention discloses a transfer case and a working state control system and method thereof, and belongs to the technical field of engineering machinery control. Working states of the transfer case comprise a power take-off state and a driving state, the transfer case comprises a first guide rod, a second guide rod and an error-proof assembly, and the error-proof assembly comprises a reset spring and an error-proof plate. A first limiting hole and a third limiting hole are formed in the mistake-proof plate; when the transfer case is in a power take-off state, the small-diameter section of the first guide rod is located in the first limiting hole, and one end of the second guide rod is connected with the third limiting hole. When the transfer case is in a traveling state, the second guide rod horizontally moves to be separated from the third limiting hole, the first guide rod moves to enable the large-diameter section to be located in the first limiting hole, the mistake-proof plate is driven to move downwards, and the second guide rod and the third limiting hole are staggered. The driving state and the power take-off state are effectively prevented from occurring at the same time, switching of the driving state and the power take-off state is accurately controlled, and the safety and reliability of the power take-off process are improved.