79results about How to "Realize automatic shifting" patented technology

A gearshift mechanism extreme position self-learning control method for an AMT system is adopted for controlling the working sequence of the AMT system, and comprises the steps that firstly, an input signal of a self-learning module is acquired and input by a TCU (the control unit) and a self-learning bit zone is output to other subsequent modules of the AMT system; then an ATM action sequence module selects an action sequence matrix according the bit zone, and decoding is conducted according to action time sequence, so that the target position of each gearshift mechanism is obtained; and finally, the gearshift mechanism is driven to act by a motor driving module. The self-learning module conducts the in-place detection according to the actual position of the gearshift mechanism, and if the self learning process is completed, the extreme position parameter of a mechanical mechanism is updated and stored automatically. Therefore, when temperature is changed greatly or traveled distance is accumulated to a certain degree, the precision and the speed of motor driving can be guaranteed.

The invention relates to an oil field well workover treatment tool, in particular to hydraulic tongs capable of realizing the automatic loading/unloading of an oil pipe and a sucker rod. The hydraulic tongs comprise main tongs, back tongs, a high-low-speed gear shift mechanism and a connecting support. The back tongs are arranged on the connecting support; the main tongs are positioned above the back tongs and are connected with the back tongs through a guide bar; and the main tongs can reciprocate up and down along the guide bar. The high-low-speed gear shift mechanism is arranged on the main tongs; the output end of the high-low-speed gear shift mechanism is connected with a gear shift device inside the main tongs; and the high-low-speed gear shift mechanism is also connected with a hydraulic control module. The hydraulic tongs are connected with a hydraulic tongs telescopic bracket of the machine body of the well workover machine through the connecting support. The hydraulic tongs are driven by the telescopic bracket to realize automatic telescoping, thereby freeing operators from a dangerous operating environment. Automatic operation is realized for the loading/unloading of the hydraulic tongs, thereby not only reducing the labor intensity of workers, but also avoiding possible accidental injury of workers during the operation.

The invention discloses an automatic speed changing method based on a manual gearbox and a system. The automatic speed changing method includes controlling linkage of a clutch actuating mechanism and a clutch to realize engaging and disengaging and controlling linkage of a gear shifting actuating mechanism and the gearbox to change a gear position by a central processing unit according to obtained vehicle driving state information. The automatic speed changing method and the system have the advantages that 1, a working mode is an automatic step speed change mode, the characteristic of high-torque output of a manual speed changing mode is inherited, automatic gear shifting can be realized, and the automatic speed changing method and the system can be applied to heavy-duty goods vehicles and public transport vehicles; 2, speed-changing gear shifting is completed hydraulically or by the aid of a motor controlled by an ECU (electronic control unit) on the basis of manual speed changing, and manufacturing cost is low; and 3, shortcomings of a hydraulic torque converter are overcome due to an automatic control effect of the ECU, and power loss of an engine is greatly reduced.

The invention proposes a novel automatic transmission without a clutch and a synchronizer and a speed change method thereof. The automatic transmission comprises a first-gear driving gear, a second-gear driving gear, a combination gear arranged between the first-gear driving gear and the second-gear driving gear, a first-gear driven gear engaged with the first-gear driving gear, a second-gear driven gear engaged with the second-gear driving gear, a gear shifting control circuit, and a motor controller; rotating speed sensors are respectively arranged on the first-gear driving gear, the second-gear driving gear and the combination gear, and are used for measuring the rotating speeds and phases of the corresponding gears and sending to the gear shifting control circuit; the gear shifting control circuit adjusts the rotating speed of the combination gear through comparing the rotating speed difference between the combination gear and the driving gear to be combined with the combination gear in gear shifting until the rotating speed difference is in a set range; and when the combination gear and the driving gear to be combined with the combination gear in gear shifting are matched in phase, a shifting fork is driven to control the gear combination.

The invention relates to a gear-shifting schedule curve measuring method and a corresponding gear-shifting control method for off-road vehicles, and belongs to the technical field of automatic variable speed control of the off-road vehicles. According to the methods, a gear-shifting schedule curve equation of an AMT (automated mechanical transmission) of an off-road vehicle is calculated firstly; a corresponding gear-shifting schedule curve is drawn; the current practical vehicle speed, the slip ratio and the throttle opening degree are collected, and corresponding target gears are determined; control signals for electromagnetic valves of actuating mechanisms are output through an logical operation; therefore, the electromagnetic valves of the actuating mechanisms are enabled to perform corresponding actions, and the automatic gear shifting is achieved. The gear-shifting schedule curve measuring method and the corresponding gear-shifting control method can guarantee the tractive efficiency and the fuel oil economic efficiency of the AMT of the off-road vehicles, reduces the work intensity of a driver, and enables the vehicles to travel more smoothly; meanwhile the gear-shifting actuating mechanisms are improved, a gear selecting process is omitted, the gear-shifting time is reduced and the gear-shifting efficiency is improved due to the direct gear shifting; and the methods can be used for AMT of off-road engineering vehicles, agricultural vehicles and military motor vehicles.

An electronic control pneumatic gear shifting device of a tractor transmission comprises a whole vehicle air source, a gear shifting execution mechanism, a clutch operation mechanism and a controller. The whole vehicle air source comprises an air compressor, an air storage tank and an air filtration regulator. The gear shifting execution mechanism comprises a first three-position five-way pneumatic electromagnetic valve, a first two-position three-way pneumatic electromagnetic valve, a second three-position five-way pneumatic electromagnetic valve, a second two-position three-way pneumatic electromagnetic valve, a first gear shifting cylinder and a second gear shifting cylinder. The clutch operation mechanism comprises a third two-position three-way pneumatic electromagnetic valve, an assistance cylinder, a control valve and a pedal mechanical transmission device. The air compressor is connected with the pneumatic electromagnetic valves through an air conveying pipeline by means of the air storage tank and the air filtration regulator. All the pneumatic electromagnetic valves are connected with the controller. An air inlet of a control valve is connected with the whole vehicle air source through the air conveying pipeline. Electronic control pneumatic gear shifting and pneumatic assistance are adopted for the electronic control pneumatic gear shifting device, and therefore the operation comfort and the work efficiency of the transmission are improved, the fatigue strength is lowered, and the automation degree of a tractor is improved.

The invention relates to a centrifugal gear shifting device, which comprises a first transmission element, a second transmission element and a gear shifting mechanism, wherein an accommodating cavity is formed between the second transmission element and the first transmission element; the second transmission element is provided with an inner wall positioned in the accommodating cavity; the first transmission element is provided with an outer wall positioned in the accommodating cavity; a first ratchet wheel is arranged in the outer wall position of the first transmission element; a second ratchet wheel is arranged in the inner wall position of the second transmission element; the gear shifting mechanism comprises a gear shifting element frame and a gear shifting element device; the gear shifting element device comprises a plurality of gear shifting elements; the gear shifting elements are connected through balancing elements; each gear shifting element comprises an installing part and a weight balancing block; the installing part comprises an inner surface and an outer surface; the first pallet is arranged on the inner surface of the installing part; the second pallet is arranged on the outer surface of the installing part; an elastic element used for controlling the initial position of the first pallet and the second pallet is arranged on the gear shifting element frame. The centrifugal gear shifting device can realize the automatic gear shifting in the running process.

The invention discloses an on-line loading test stand shift mechanism of a manual transmission.The on-line loading test stand shift mechanism is characterized in that a gear selection unit is arranged and has a working principle that a gear selection servo motor drives a screw sliding table to slide along the axial direction of a ball screw; a gear shift unit has a working principle that a gear shift servo motor drives a gear shift shifting head through a transmission shaft to rotate for a set angle; the transmission shaft in the gear shift unit and the ball screw in the gear selection unit are in the same axial direction; the gear shift unit is supported by a gear shift unit support plate; the gear shift unit support plate is fixedly connected with the screw sliding table; and the screw sliding table drives the gear shift unit to slide along the axial direction of the ball screw. The on-line loading test stand shift mechanism has the advantages of simple structure and high control precision and can act accurately and reliably, and the manual transmission can automatically shift gears.

The invention relates to technical field of manufacturing of tractors, particularly to a hydraulic gearshift of a tractor. The hydraulic gearshift comprises a gear shifting handle, a fork shifting rod and a clutch, wherein a handle position sensor connected to a gear shifting controller is mounted on the gear shifting handle; a clutch position sensor connected to the gear shifting controller is mounted on the clutch; a signal output end of the gear shifting controller is connected with a control end of a gear shifting electromagnetic valve and is used for controlling the movement of the gear shifting electromagnetic valve; the fork shifting rod is connected with a hydraulic cylinder in a transmission manner; the gear shifting electromagnetic valve is connected with an oil circuit of the hydraulic cylinder in series. According to the gearshift, the fork shifting rod is pushed to move by the hydraulic cylinder instead of manpower, so that the gear shifting operation is light and convenient, and the movement is accurate; the gear shifting controller is configured to write a corresponding gear shifting program, so that sequencing gear shifting and automatic gear shifting can be realized.

The invention discloses an automobile shift control system, which comprises a sensing system, a control system and an execution system, wherein the sensing system comprises a throttle opening sensor, an engine rotating speed sensor, a vehicle speed sensor and a clutch state sensor. All the sensors are used for detecting the automobile condition information and generating sensing signals, wherein the throttle opening sensor is used for detecting the throttle opening of an engine and generating an throttle opening signal to be transmitted to the control system; the engine rotating speed sensor is used for detecting the rotating speed of the engine and generating an engine rotating speed signal to be transmitted to the control system; and the vehicle speed sensor is used for sensing the real-time speed of the automobile and generating an automobile speed signal to be transmitted to the control system. The invention provides an automobile, which comprises the engine, a clutch, a shifting component and the automobile shift control system. With the adoption of the automobile shift control system, the automatic shifting of the automobile can be realized, so that a driver does not need to shift the throttle frequently. Therefore, the fatigue of the driver in driving is lightened.

A power split type hybrid electric vehicle driving system comprises an engine and wheels, and further comprises a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train, a third epicyclic gear train, a first brake and a second brake. A power split type hybrid power topological mechanism is adopted, the power of an internal combustion engine is distributed on two paths, one path is a mechanical path, acting force can be directly transmitted to the wheels through gear engagement, the other path is an electric path, and besides the internal combustion engine and a driving device, an electric motor can apply the acting force to planetary gears. An engine rotating speed and a vehicle speed are decoupled, a working rotating speedrange of the engine is adjusted in real time through the generator, an engine output torque, the wheel rotating speed, a required wheel torque and other driving requirements are adjusted through thedriving motor, a working point of the internal combustion engine is more ideal, and whole vehicle fuel economy is improved to the maximum degree. Automatic gear shifting is achieved, power is ensurednot to be interrupted in the gear shifting process, and driving stability is guaranteed.

The invention discloses a manual-automatic integrated self-adaptive transmission sensing electric control automatic gear shifting device for an engine, and the device comprises a gearbox body, a clutch, a power input shaft, a power output shaft, a gear shifting drum, a self-adaptive transmission device, an automatic gear shifting control system and a manual gear shifting system; when a vehicle isin normal running, a controller controls the clutch and the gear shifting drum automatically to drive a servo motor to shift up or shift down automatically according to the resistance moment; when the resistance changes, a torque value is obtained, a rotational speed value of the output shaft is detected by a rotational speed sensor, and the gear shifting action and the gear shifting position aredetermined by torque-rotational speed change, thus realizing automatic gear shifting which is determined by the torque-rotational speed change and the opening degree of a throttle and meeting the operating requirements under the condition of complex roads; and automatic gear shifting can be switched to the manual gear shifting system according to actual conditions, and a gear shifting switch is utilized for inputting a gear position order to the controller and for controlling the clutch and the gear shifting drum to drive the servo motor to realize manual gear shifting.

The invention relates to the field of vehicle gear shifting, and discloses a vehicle gear shifting control system, a driving gear shifting control method and a loading machine. The vehicle gear shifting control system comprises a variable pump, multiple motors and a multi-gear transmission. The motors are driven by the variable pump. The transmission comprises multiple clutches. Each motor drivenby the variable pump is connected with at least one clutch. At most one of the at least one clutch connected to the same motor is in the engaged state. According to the vehicle gear shifting control system, the driving gear shifting control method and the loading machine, when the gear of the transmission is adjusted, the clutch which needs to be adjusted to be in the engaged state from the disengaged state is engaged when the displacement of the motor driving rotation connection of the clutch is not equal to zero firstly, the clutch which needs to be adjusted to be in the disengaged state from the engaged state is then disengaged after the displacement of the motor driving the clutch to rotate is equal to zero, and therefore it is ensured that no power failure is caused in the gear shifting process, no impact on the vehicle speed is caused when the clutch is disengaged, and it is ensured that the vehicle speed of a whole vehicle is stably changed.

The invention belongs to the technical field of gearboxes, particularly relates to a gearbox of reverse input agricultural equipment and discloses an automatic gearbox for an electric mini-truck. The automatic gearbox for the electric mini-truck mainly comprises a clutch, a gearbox shell, a first shaft, a reverse idler shaft, a first-speed driven gear, a first-and-reverse gear hub, a reverse driven gear, a second-speed driven gear, a second-and-third speed gear hub, a third-speed driven gear, a second shaft, a first flange plate, a differential assembly, a second flange plate, a movable gear and the like, wherein the first shaft and the second shaft are sequentially arranged inside the gearbox shell of a hollow structure from bottom to top; a reverse driving gear, a first-speed driving gear, a second-speed driving gear and a third-speed driving gear are sequentially and fixedly connected to the portion, in the gearbox shell, of the first shaft from left to right; and the second shaft is sequentially provided with the reverse driven gear, the first-and-reverse gear hub, the first-speed driven gear, a vertical differential connection shaft, the second-speed driven gear, the second-and-third speed gear hub and the third-speed driven gear. According to the automatic gearbox for the electric mini-truck, the gear shifting operation is easy and convenient, the gear shifting force is small, gear distribution and gear speed are reasonable, the safety performance is good, reliability is high, and the service life is long.

The invention discloses a gear-shifting control method, a gear-shifting control system and engineering machinery for traction operation. The gear-shifting control method comprises the following steps of: acquiring turbine speed, engine speed and a gear signal in the current accelerator state; keeping the current gear when the gear signal is a neutral position signal, otherwise calculating to obtain a speed ratio, wherein the speed ratio is a ratio of the turbine speed to the engine speed; keeping the current gear if the speed ratio is in a preset speed ratio range; reducing the gear when the speed ratio is lower than the minimum speed ratio in the preset speed ratio range and the gear signal is not the lowest gear signal; and raising the gear when the speed ratio is higher than the maximum speed ratio in the preset speed ratio range and the gear signal is not the highest gear signal.

The invention discloses a gear shifting control method, a system and engineering machinery used for traction operation, wherein the gear shifting control method comprises the following steps of: obtaining turbine torque, engine torque and gear position signals under the current throttle state; keeping a current gear position when judging the gear position signals are hollow gear signals, or else, calculating to obtain the torque ratio, wherein the torque ratio is a ratio of the turbine torque to the engine torque; if the torque ratio is in the range of the preset torque ratio, keeping the current gear position; rising the gear position when the torque ratio is less than the minimal torque ratio in the preset torque ratio range, and the gear position signals are judged not the highest gear signals; and lowering the gear position when the torque ratio is greater than the maximum torque ratio in the preset torque ratio range, and the gear position signals are judged not the lowest gear signals.

The invention discloses an automatic gear shifting system with a synchronizer for an electric vehicle. The automatic gear shifting system comprises a gearbox, the synchronizer, an electromagnet, a motor and a controller. The gearbox comprises an input shaft, an intermediate shaft and an output shaft, the synchronizer is movably penetratingly arranged on the output shaft and is connected with a shifting fork, the shifting fork is connected with a shifting fork shaft, the electromagnet is connected with the shifting fork shaft, the motor is connected with the input shaft, and the controller is connected with the motor and the electromagnet. The automatic gear shifting system has the advantages that electric signals can be transmitted to the electromagnet by the controller, the shifting fork shaft can be controlled via the electromagnet, the shifting fork can traverse up and down under the control of the electromagnet via the shifting fork shaft, the synchronizer can be driven by the shifting fork to traverse up and down between a first output shaft gear and a second output shaft gear when the shifting fork traverses up and down, accordingly, the synchronizer can work with the first output shaft gear or the second output shaft gear, and automatic gear shifting effects can be realized.

The invention discloses a lockable gear-shifting control method. The lockable gear-shifting control method comprises obtaining turbine torque and a gear signal under a current accelerator state; comparing the turbine torque with a preset locking torque corresponding to the gear signal; locking a hydraulic torque converter when the turbine torque is lower than the preset locking torque; maintaining the current gear when judging that the gear signal is a neutral position signal, or else comparing the turbine torque with a preset gear-shifting torque range; maintaining the current gear when the turbine torque is within the preset gear-shifting torque range; unlocking the hydraulic torque converter when the turbine torque is smaller than the minimum torque within the preset gear-shifting torque range, and raising the gear when judging that the gear signal is not the highest gear signal; and unlocking the hydraulic torque converter when the turbine torque is larger than the maximum torque within the preset torque range, and lowering the gear when judging that the gear signal is not the lowest gear signal.

The invention discloses a gear shifting device for a motor vehicle. The gear shifting device comprises an angle sensor, a driving unit and a gear shifting hub. The angle sensor is arranged to face towards the gear shifting hub so as to detect the real-time position of the gear shifting hub and generate a real-time position signal and a signal processing module. The angle sensor is electrically connected with the signal processing module. The signal processing module can receive the real-time position signal from the angle sensor and generate a first operation control signal according to the real-time position signal. The signal processing module is electrically connected with the driving unit. The driving unit can receive the first operation control signal from the signal processing module and operate according to the first operation control signal so as to drive the gear shifting hub to rotate.

The invention discloses a stepless variable drive system for series dual-motor differential power dividing. The system comprises an engine output/differential input shaft, a first motor, a second motor, a motor controller, a power dividing device, a clutch, a gearbox, an engine power output shaft and a storage battery; the first motor and the second motor are connected in series, power of an engine is transmitted to the first motor through the engine output/differential input shaft for power generation, and meanwhile, the engine output/differential input shaft outputs power outwards through the power dividing device, the clutch and the gearbox to form a first power path; the first motor supplies power to the second motor and the storage battery through the motor controller, and the secondmotor outputs power outwards through the power dividing device, the clutch and the gearbox to form a second power path. The stepless variable drive system has the two power paths of mechanical power and electric power.