38results about How to "Accurate gear shift" patented technology

The invention discloses a three-gear double-clutch type automatic gearbox for a pure electric bus. The three-gear double-clutch type automatic gearbox comprises a double clutch and a three-gear transmission mechanism, wherein the odd clutch in the double clutch is connected with transmission chains of the first gear and the second gear of the gear mechanism, and while the even clutch is connected with the transmission chain of the second gear in the gear mechanism. The three-gear double-clutch type gearbox is large in transmission torque, reasonable in speed ratio configuration, accurate to shift under the electric control hydraulic and the control of a TCU, small in shifting time, high in transmission efficiency, and effectively suitable for the pure electric bus.

The invention discloses a motorcycle intelligent control system, it mainly consists of signal processing unit, signal conversion unit and main control unit, the signal processing unit is connected with speed sensor, transmission shift display circuit and motor pulse coil; the signal conversion unit is connected with the transmission shift processing device contact component displacement sensor, the lutch processing device contact component displacement sensor, the throttle control device displacement sensor and the throttle processing device displacement sensor; the, main control unit is connected with the clutch drive circuit, transmission shift drive circuit and throttle driver circuit, the clutch drive circuit is connected with the clutch processing device, the transmission shift drive circuit is connected with the transmission shift processing device, the throttle drive circuit is connected with the throttle processing device. The invention also provides a motorcycle intelligent control method, the invention makes the motorcycle driving more simple and easier, solves the problems of motor is easy to flameout, motorcycle pushing, transmission shift is not immediate and fuel waste caused by stepless speed transmission after motorcycle starts and speeds up in the prior motorcycle.

On the brush rocker of the invention a Hall Sensor is mounted and on the motor shaft of rotator set corresponding to the location of Hall Sensor a magnetic ring is sheathed. The case of decelerator is permanently jointed with the gear shaft on which the buffer body is sheathed. On the out side of buffer a buffer gear is sheathed, and on the inner side of buffer a plastic jacket is sheathed. In the inner top portion of the buffer body there is a spring slot in which a buffer spring is mounted, and there is a capping plate gear jointing with the inner top portion of the buffer body and connected with drive gear in mesh. Due to the connection between buffer gear and driven member, and the buffer action of buffer spring, the impact given to the driven member is less. The Hall Sensor can accurately figures out rotation times of electric machine shaft, and is specially suite acceptable for gear shifting in car.

The invention relates to an AMT transmission with assisted clutch, comprising manual gearbox, shift control mechanism, starting clutch and the control mechanism, speed sensor of inputting shaft, speed sensor of outputting shaft, shifting position sensor and control cell TCU. It is characterized in that assisted clutch and the control mechanism are set on the inputting shaft and the assisted clutch combines with high-shift gear. By the invention the problem that in shifting process the power of engine can not be transferred to wheels so that power is off is solved. There is no distinct deceleration in shifting and shifting comfort is improved. Good power property and shifting stability of vehicles are guaranteed while oil economy is improved and oil consumption in shifting is decreased.

The invention relates to the technical field of new energy automobiles, in particular to a gear shifting and parking locking mechanism for an electric automobile. The gear shifting and parking locking mechanism for the electric automobile comprises an underframe, a supporting seat, a supporting outer ring, a protective shell, a switching assembly and the like, a supporting base is fixedly installed on the top of the right side of a bottom frame, a supporting outer ring is fixedly installed on the upper left portion of the bottom frame, a protection shell is fixedly installed on the left side of the supporting outer ring, and the switching assembly is arranged on the supporting base. Through cooperation of a first sliding clamping teeth and a second sliding clamping teeth, when an automobile is parked, the first sliding clamping teeth can clamp a first trapezoidal clamping teeth, or the second sliding clamping teeth clamp a second trapezoidal clamping teeth, so that a clamping rod clamps a slotting gear shaft, automobile wheels can be stably clamped, and automobile sliding caused by rotation of the wheels during parking is prevented.

The invention discloses an electromagnetic boosting type gear shifting mechanism. The electromagnetic boosting type gear shifting mechanism comprises a self-locking device, a sliding shifting fork, a guide rail shaft, a first coil mounting rack, first coils, a sector gear, middle coils, a second coil mounting rack, second coils, a locating bearing, an assembly support, an infrared photoelectric reflective sensor and an ECU. When the electromagnetic boosting type gear shifting mechanism is in a neutral gear, the sliding shifting fork is located in the middle position of the guide rail shaft. The ECU controls connection and disconnection of electricity and current conditions of the first coils, the middle coils and the second coils to enable the first coils, the second coils and the middle coils to generate electromagnetic force simultaneously and act on the mounting ends of the middle coils. By means of the lever principle, the rotating arm force of the mounting ends of the middle coils is greater than that of the gear end. Under the energizing action of the sector gear, the sliding shifting fork is made to slide on the guide rail shaft to achieve the gear shifting action. Moreover, when the sliding shifting fork stops sliding, the self-locking device conducts self-locking.

The invention provides a gear selecting and shifting mechanism for a speed changer and relates to a vehicle part. The gear selecting and shifting mechanism comprises a drive motor, a first slot opening, a first shifting fork, a second slot opening and a second shifting fork. The drive motor is provided with an output shaft for outputting power, and the output shaft is provided with an increase portion with the diameter being increased; the first slot opening is formed in the increase portion, the first slot opening corresponds to at least one gear position, and the gear positions are configured to surround the outer circumferential face of the increase portion; the first shifting fork is configured to rotate along the first slot opening when the output shaft is rotated so that the movement state of a vehicle can be changed according to the gear positions in the first slot opening; the second slot opening is configured in the increase portion, the second slot opening is provided with at least one gear position, and the gear positions are configured to surround the outer circumferential face of the increase portion, and the second slot opening and the first slot opening are formed in a spaced manner; and the second shifting fork is configured to move along the second slot opening when the output shaft is rotated so that the movement state of the vehicle can be changed according to the gear positions in the second slot opening. By means of the gear selecting and shifting mechanism, problems of gear selecting and gear shifting are solved through one motor.

The present application discloses a control method of a synchronizer, which includes obtaining the self-learning result of the minimum synchronization point of the synchronizer in each gear; the self-learning result represents the test value of the minimum synchronization point of the synchronizer; and then, according to The self-learning result determines the position of the minimum synchronization point of each gear; finally, the synchronizer is controlled to move according to the position of the minimum synchronization point, so as to realize the gear shifting operation. Compared with the traditional shifting method, the method provided in this embodiment can perform self-learning for each gearbox, fully considering the differences caused by the gearbox hardware itself and assembly, therefore, the minimum synchronization point determined based on the self-learning method is more accurate. Accurate, so as to realize the precise control of the synchronizer, reduce the probability of hitting the tooth or hitting the end point, and the shifting is more precise. The application also discloses a control device for a synchronizer.

The invention provides an electric automobile rear axle assembly with an ABS automatic shifting function, and belongs to the technical field of electric automobiles. According to the electric automobile rear axle assembly, the problems that energy consumption of an existing electric automobile rear axle is high and shifting cannot be conducted automatically are solved. The electric automobile rear axle comprises a decelerator, a differential mechanism and two bridge tubes connected on the differential mechanism. Half shafts penetrate through the bridge tubes, and braking drum plates driven to rotate by the half shafts are arranged at the outer ends of the bridge tubes. The decelerator is composed of an input gear assembly, a shifting gear assembly and an output gear assembly; a shell of the decelerator is connected to a main motor driving the input gear assembly to work, and a shifting motor capable of driving the shifting gear assembly to shift; and the shell of the decelerator is further provided with a speed sensor capable of monitoring the speed of the output gear assembly, signals monitored by the speed sensor are transmitted to a trip computer, and the trip computer sends shifting commands to the shifting motor after analyzing the signals. The electric automobile rear axle assembly with the ABS automatic shifting function has the advantages of high degree of automation, low energy consumption and accurate shifting.

The invention discloses an inner transmission control mechanism used in a chainless drive vehicle and a chain drive vehicle. According to the inner transmission control mechanism, a clutch mechanism to be controlled is driven to perform disengage or engage action by a power rotating part (such as an input ring, an inner gear, a planet carrier and an output ring) in an inner transmission via a cam or cam-like structure, or a linkage device is driven by the cam or cam-like structure to rotate or translate so as to enable the clutch mechanism to be controlled to perform disengage or engage action, then a rapid switching effect of the control mechanism is completed by rotating the cam or cam-like structure or the linkage device for a certain angle, main transmission power is supplied by the power rotating part instead of a shifting rod for controlling the switching action, the shifting rod can act relatively slightly, the transmission operation can be relatively accurate, the overall control mechanism is relatively simple and easy, the weight can be relatively reduced, the size can be relatively reduced, and furthermore the overall industrial practicability and the practicable performance of the inner transmission can be improved.

The invention relates to the technical field of gear shifting control mechanisms, in particular to a double-clutch preset gear control mechanism. The double-clutch preset gear control mechanism comprises a cam assembly, an angle sensor, starting switches, a limiting block, a swing block, shifting fork assemblies and a control cover, the cam assembly comprises a cam, and a plurality of lead groovesand a plurality of gear grooves are formed in the cam; the limiting block is mounted below the cam assembly, and a limiting groove used for mounting a lead rod is formed in the limiting block; the swing block is connected with a control rod and the lead rod, and the swing block cooperates with the gear grooves through positioning pins at the two ends for gear shifting; the swing block can rotateleft and right to switch upshift and downshift; the shifting fork assemblies are mounted in the lead grooves of the cam through rocker arm assemblies; and the control cover is mounted on a gearbox body, and a pipe sleeve used for supporting the rocker arm assemblies is mounted on the control cover. Gear shifting and upshift and downshift switching are easy and convenient to operate, and the shifting fork assemblies are more convenient to overhaul.

The invention provides a gear-shifting control method and device and an automatic gearbox control unit. The gear-shifting control method comprises the steps that a gear-shifting command is received; a corresponding pre-stored gear-selecting and gear-shifting position reference point is obtained according to the gear-shifting command; gear-shifting control is conducted based on the gear-selecting and gear-shifting position reference point; if gear shifting fails, a corresponding pre-stored gear-selecting and gear-shifting driving time reference value is obtained according to the gear-shifting command; and gear-shifting control is conducted based on the gear-selecting and gear-shifting driving time reference value. According to the gear-shifting control method and device and the automatic gearbox control unit, under the condition that gear-shifting control based on the gear-selecting and gear-shifting position reference point fails, gear-shifting control is conducted based on the gear-selecting and gear-shifting driving time reference value, so that the phenomenon of unsmooth gear shifting caused by abrasion of the gearbox or interference to a position sensor or failures is avoided, and rapid and accurate gear shifting is achieved accordingly.

The invention provides an electromagnetic actuator used for gear shifting of an electric automobile. The electromagnetic actuator comprises a shifting fork, an iron piece, a base, a tubular shell mounted on the base, side end covers for fixedly plugging the two ends of the shell, an iron core, and coils for sleeving the two ends of the iron core in a spaced mode; the coils are fixedly connected with the shell, two windows are formed in the side wall of the shell, and three notched optocouplers are fixedly arranged in one window in the axial direction and correspond to the first gear, the neutral gear and the second gear of the automobile; the shifting fork perpendicularly and fixedly penetrates through the iron core, one end of the shifting fork is fixedly connected with the iron piece, the other end of the shifting fork penetrates out of a gap of the other window, and the other end of the iron piece penetrates into a notch in one notched optocoupler in a spaced mode; and an electric control module comprises a single chip microcomputer, a relay, an audion, a diode and a switch, wherein the three PWM output ends of the single chip microcomputer are connected with the input ends of the first gear optocoupler, the second gear optocoupler and the neutral gear optocoupler correspondingly. The coils are controlled to be on or off by controlling the corresponding optocouplers to be on or off, electromagnetic force generated when the coils are electrified drives the shifting fork to move, and gear shifting is smoothly completed.

The invention relates to a transmission electric control gear-shifting control method and a transmission electric control gear-shifting control device and system. The transmission electric control gear-shifting control method comprises the following steps that a needed target gear is input through a control panel; the target gear is compared with a current gear, when the target gear differs from the current gear, and the difference value of the target gear and the current gear is converted into a control instruction for controlling a transmission; and according to the control instruction, the transmission is operated through a first gear-shifting control stay wire and a second gear-shifting control stay wire, so that the gear of the transmission is converted into the target gear from the current gear. According to the transmission electric control gear-shifting control method, handling convenience of a vehicle adopting the variable speed control method can be greatly improved, and complexity of gear-shifting operation is greatly lowered, so that gear-shifting operation is easier.

The invention provides a target gear calculating method and system. The target gear calculating method comprises the following steps: obtaining the gearshifting parameter of a vehicle in real time, determining the best gearshifting point of the current power of the vehicle based on the gearshifting parameter and the acceleration curve of each gear, and determining the best gearshifting point of the current economy of the vehicle based on the gearshifting parameter and the fuel consumption curve of each gear; and based on the correspondence between the adjusting factor established in advance and a power gearshifting point and the correspondence between the adjusting factor and the economical gearshifting point of fuel, determining the best gearshifting point of the current power and regarding any best gearshifting point of the best gearshifting points of the current economy as the target gearshifting point. Through the target gear calculating method, the driving habit of a driver is obtained to determine the adjusting factor, and the gearshifting parameters under different working conditions are obtained in real time to realize precise gearshifting under different working conditions.

The invention provides a high precision numerical control machine tool. The tool comprises a bed body, a spindle box component disposed on the bed body, a longitudinal servo feed system, a transverseservo feed system, a main power device system, a tool holder system, a positioning device and an electrical appliance system, and the main power device system is provided with a roller bearing and anoil cylinder. The main power device system is provided with a roller bearing and a cylinder, a steel pipe is processed by spindle rotation, thereby improving the machining precision of the machine tool, the whole machine structure is more compact, a spindle bearing has longer service life, and an oil cylinder shift mode is used for gear shifting, which increases the degree of mechanized production, reduces labor costs, reduces the work intensity of workers, and makes machine tool shifting more convenient, faster and more accurate.

The invention discloses a two-speed mechanical automatic transmission control system for a pure electric vehicle and a control method thereof. The system includes a vehicle controller, a drive motor, a speed change controller, a servo driver and a DC servo motor. The gear shifting is controlled by the number of PWM pulses. spacing, shifting quickly, accurately, and in one step, effectively avoiding the traditional method of using a displacement sensor that is easily restricted by the spatial position of the gearbox; the shifting mechanism adopts a transmission screw and a shift fork structure with a nut, which has a simple structure and accurate shifting. , and has a self-locking function; the shifting action is completed within 1 second, the shifting time is short, the pulse is constant, the shifting is accurate, in place, and the impact is small, effectively achieving fast and smooth shifting; by updating the pulse number of the global variable , realizes intelligent detection of shift intervals, ensures the accuracy and speed of each shift, and solves the problem of insufficient shift accuracy caused by manufacturing errors in mechanical structures such as shift mechanisms and gearboxes.

The invention discloses a shift motor, which is characterized by the following: loading Hall inducer 6 with magnetic property on the brush rocker 4 of brush rocker component; casing induction counting gear 7 corresponding to Hall inducer on the motor shaft 8 of rotor component; connecting reducer case 1 of reducer case component and gear shaft 2; casing buffer bulk 14 on the gear shaft 2; casing buffer gear 15, plastic sleeve 16 on the outer and inner sides of buffer bulk 14 separately; opening spring groove 17 with buffer spring 18 on the top of buffer bulk 14; connecting lid gear 19 in the inner part of buffer bulk 14; gearing lid gear 19 and positive gear 12. The invention protects driven part effectively, which is fit for automobile fork and shift sequently and precisely.