13results about How to "Improve shift efficiency" patented technology

The invention belongs to the technical field of electric driving gear shifting control, and discloses a motor transmission driving system gear shifting control method based on chance constraint, which comprises the following steps: constructing a motor transmission, and establishing a motor transmission mathematical model; a gear shifting execution mechanism operation signal, a gear shifting execution mechanism sensing signal, a driving motor sensing signal and a load signal of the motor transmission are collected; the current position and the expected position of the joint sleeve are judged by combining the operation signal of the gear shifting execution mechanism and the sensing signal of the gear shifting execution mechanism, and the gear shifting logic of the motor transmission is designed; based on a driver signal, a gear shifting execution mechanism sensing signal, a driving motor sensing signal, a load signal and a motor transmission gear shifting logic; compared with a traditional gear shifting control method, chance constraint is carried out on uncertain factors in the gear shifting process, the gear positioning method for reducing the position precision and enhancing the gear shifting efficiency is designed in combination with the optimization requirement of the gear shifting process, and faster and more efficient motor gear shifting control is achieved.

The embodiment of the present invention provides a shift mechanism and an electric vehicle, wherein the shift mechanism comprises a frame, a first shift motor, a second shift motor, a first shift finger, a second shift finger, a first reduction gear set and a second reduction gear set, all of which are mounted on the frame; the first shift motor and the first shift finger are connected by a first reduction gear set to drive the first shift finger to swing back and forth relative to the frame; the second shift motor and the second shift finger are connected by a second reduction gear set to drive the second shift finger to swing back and forth relative to the frame. The shift mechanism can realize efficient shifting of four gears and has high reliability. The electric vehicle includes the shift mechanism and has all the advantages of the shift mechanism.

The utility model discloses a special hybrid transmission, a hybrid driving system and a vehicle, the special hybrid transmission comprises a power input shaft, a power output shaft, a wet-type double clutch and a planetary gear mechanism, the wet-type double clutch comprises a first clutch and a second clutch, and the planetary gear mechanism comprises a planet carrier, a sun gear and a gear ring. The output end of an engine is connected with the power input shaft, the power input shaft is connected with the sun gear through the first clutch, the second clutch is connected with the first clutch through an intermediate shaft, the intermediate shaft is further connected with the planet carrier through the second clutch, and the planet carrier is connected with the output end of the engine. The gear ring is respectively meshed with a planet wheel on the planet carrier and a motor gear of the motor, and the power output shaft is connected with the planet carrier or the gear ring. The speed ratio can be steplessly and stably adjusted, the gear shifting efficiency is improved, gear shifting is stable and smooth, and gear shifting power loss is reduced.

The present invention relates to a gearbox shift control system, method, device and tractor for a tractor, and belongs to the technical field of tractor control. The system includes a starting clutch, a gearbox and a controller arranged on the tractor, wherein the starting clutch is controlled by a proportional solenoid valve, and the gearbox includes a plurality of gear clutches, each gear clutch is controlled by a switch solenoid valve, and the proportional solenoid valve and each switch solenoid valve are connected to the controller; the controller is used to obtain the operating parameter information of the tractor in real time; judge whether the current gear of the gearbox of the tractor meets the automatic shifting condition; if the automatic shifting condition is met, a control strategy is generated based on the operating parameter information and a preset control rule, and the operating state of the proportional solenoid valve and at least one switch solenoid valve of the gearbox is controlled based on the control strategy, so that the current gear of the gearbox is switched to the target gear. The slipping phenomenon of the clutch during the gear shifting process is reduced.

The utility model discloses a kind of support for gearbox control system, gearbox control system and vehicle, the support includes: first support piece;Connecting piece, one end of the connecting piece is connected with the side surface of the first support piece;Second support piece, the side surface of the first support piece towards the second support piece is connected with the other end of the connecting piece, and the second support piece is connected with the soft shaft assembly of gearbox control system.According to the support for gearbox control system of the utility model, the structural strength of the support is improved, the installation stability of the soft shaft assembly is improved, gear selection and gear shifting are facilitated, and the use experience of the driver is improved.

This invention discloses a method for self-learning the clutch of an AMT (Automated Manual Transmission) in commercial vehicles, specifically including the following steps: Step 1: Determine whether the current vehicle meets the self-learning conditions; if so, proceed to Step 2; Step 2: Clutch self-learning: After activating clutch self-learning, the clutch will perform two rounds of disengagement and engagement; Step 3: After the clutch performs two disengagement and engagement actions, the learned parameters are stored in the TCU (Tracking Control Unit), completing one clutch self-learning cycle; Step 4: Repeat the above process to complete multiple clutch self-learning cycles. The method of this invention defines the complete disengagement point and the first, second, and third contact points by using the input shaft speed as a threshold, resulting in higher recognition accuracy and a simpler and more efficient TCU judgment and calculation logic.

The invention discloses a speed change mechanism, a gearbox and a method, the gearbox comprises a multi-stage speed ratio mechanism and an output mechanism, a multi-stage speed ratio assembly is in transmission connection to provide output power for the output mechanism, the multi-stage speed ratio assembly comprises at least three sets of speed ratio assemblies, and each set of speed ratio assembly has at least two speed ratios; a multi-speed-ratio transmission pair is constructed in the multi-speed-ratio assembly by adopting laminated gears, and multi-speed-ratio forward and reverse transmission is constructed by utilizing the laminated gears; the output mechanism comprises output shafts in at least two directions and has multiple output modes, and the output modes can be switched according to use conditions. The multi-stage speed ratio assembly, the clutch, the synchronizer, the differential mechanism, the multi-shaft and multi-direction multi-mode output are integrated, on the premise that the high speed ratio is achieved, variable speed, multi-shaft output and multi-direction shaft driving output capacity and power are further achieved, a proper driving mode can be selected according to the use condition, meanwhile, the clutch is arranged, and the multi-shaft and multi-direction multi-mode output is achieved. And the gearbox can be protected during overload while intermittent switching of power is realized.

The utility model discloses a special hybrid transmission, a hybrid driving system and a vehicle, the special hybrid transmission comprises a power input shaft, a power output shaft, a double clutch and a planetary gear mechanism, the output end of an engine is connected with the double clutch, the double clutch comprises a first clutch unit and a second clutch unit, the power input shaft comprises a first input shaft and a second input shaft, the planetary gear mechanism comprises a planet carrier, a sun gear and a gear ring, the first clutch unit is connected with the sun gear through the first input shaft, the second clutch unit is connected with the planet carrier through the second input shaft, and the engine is connected with or separated from the first input shaft through the first clutch unit. Or the engine is connected with or separated from the second input shaft through the second clutch unit, the gear ring is meshed with the planet wheel on the planet carrier and the motor gear of the motor, and the power output shaft is connected with the planet carrier or the gear ring. According to the utility model, stepless gear shifting can be realized, the gear shifting efficiency is improved, the gear shifting is stable and smooth, and the power loss is reduced.

The utility model relates to a jaw screw type second-gear automatic clutch structure, which belongs to the technical field of clutches and comprises a driving shaft gear, a second shaft and a third shaft, the lower portion of the driving shaft gear is in meshed connection with a second-shaft driven gear, and the second shaft is in rigid connection with a gear spline of the second-shaft driven gear. A second shaft high-speed gear and a second shaft low-speed gear are installed on an outer side bearing of the second shaft, a plurality of sets of spiral spline sleeves are arranged on the outer side of the second shaft, and spiral splines on the outer sides of the spiral spline sleeves are connected with a low-speed reverse gear ring, a low-speed forward gear ring and a high-speed gear ring. By the adoption of the structure, the three-shaft transmission has the advantages that a high forward gear, a low forward gear and a low reverse gear are freely separated and combined through the clutch of the jaw screw mechanism, the high forward gear, the low forward gear and the low reverse gear are freely combined, and the high-speed reverse gear and the high-speed reverse gear can be freely separated and combined through the clutch of the jaw screw mechanism, so that the high-speed reverse gear and the low-speed reverse gear are combined. The gear set is automatically clutched, operation resistance is reduced, and gear shifting efficiency is improved.

This application discloses a self-elevating rock-embedded platform, comprising: a hull platform with multiple pile-planting positions; lifting legs mounted on the hull platform and capable of lifting to drive the hull platform to switch between a relocation state and a construction state; a rock-embedded drilling rig mounted on the hull platform for rock-embedded construction at the pile-planting positions; and hoisting equipment mounted on the hull platform. This application reduces the relocation time from one or even two days to one or two hours, significantly increasing platform relocation efficiency. Since the rock-embedded drilling rig does not need to be disassembled during platform relocation, the safety and reliability of the relocation are higher. During platform relocation, there is no need for a large floating crane vessel for relocation construction, which is the most expensive construction machinery in rock-embedded construction; this solution will significantly reduce the cost of rock-embedded construction. The floating hull platform, compared to the prior art which requires disassembling the crane, significantly improves safety and boundary conditions.

The 2AMT speed change assembly is characterized in that a main shaft is sleeved with a spline housing, a first-gear transmission gear and a second-gear transmission gear which are located on the two sides of the spline housing are both movably arranged on the main shaft in a sleeving mode, the first-gear transmission gear and the second-gear transmission gear are fixedly sleeved with a first-gear sleeve and a second-gear sleeve respectively, and a sliding sleeve is arranged on the spline housing in a sleeving mode; the outer spline of the spline sleeve is in key connection with the inner spline of the sliding sleeve, and when the sliding sleeve axially slides on the spline sleeve, the inner spline of the sliding sleeve can be in key connection with the first gear connecting key of the first gear sleeve or the second gear connecting key of the second gear sleeve. The 2AMT speed change assembly is simple in structure and convenient to switch and has a gear locking function.

The utility model relates to the technical field of agricultural machinery, in particular to a gearbox capable of being matched with various rotary tillage harrow structures. Comprising a first box body, a second box body, a rotating shaft, an input shaft arranged on the second box body and an output shaft arranged on the first box body, one end of the rotating shaft is located in the first box body and rotationally connected with the first box body, and the other end of the rotating shaft is located in the second box body and rotationally connected with the output shaft; the second box body rotates around the first box body with the rotating shaft as the rotating center, and a fastener used for fixing the second box body is arranged in the first box body so that the input shaft can be located on the left side or the right side of the plane where the symmetry plane of the first box body is located. The utility model provides a gear box capable of adapting to various rotary tillage harrow structures. The gear box can adapt to various rotary tillage harrow structures.

The utility model belongs to the technical field of power takeoff devices, and relates to an air bag type piston gear shifting power takeoff device. When the power takeoff needs to be in gear operation, air is sucked outwards through the first ventilation nozzle, negative pressure is formed in the rear air chamber, the reset type air bag piston assembly moves towards one side of the rear air chamber, the reset type air bag piston assembly drives the shifting fork shaft and the shifting fork to move, the shifting fork controls connection of a power component, and gear engagement of the power takeoff is completed. When the power takeoff does not need to work, the first ventilation nozzle is disconnected with the air suction device, the air pressure on the two sides of the front air chamber and the air pressure on the two sides of the rear air chamber are equal, the reset type air bag piston assembly drives the shifting fork shaft to return to the original position, the shifting fork returns to the initial position, the shifting fork controls separation of power components, and gear picking is completed. Reciprocating motion of the piston is achieved through external air exhaust and self-resetting air inflation of the air cylinder, dependence on an air storage cylinder of the whole vehicle is not needed, the air cylinder is suitable for light and medium-sized vehicles, gear shifting efficiency and reliability are improved, the structure of the air cylinder and the piston is simplified, and production cost is reduced.