41results about How to "Increase shift speed" patented technology

A gear train of an automatic transmission for a vehicle may be provided to realize eight forward speeds and one reverse speed with three single pinion planetary gear set, four clutches and two brakes.

An electronic device includes a detector configured to detect a user input and a controller configured to determine a favorite channel group according to a user's viewing history, scan channels in response to detecting an input of a control signal corresponding to a channel shift button for a predetermined time, and decrease a channel shift speed in a favorite channel group section corresponding to the determined favorite channel group and increase the channel shift speed in a section other than the favorite channel group section.

This invention relates to a control device for a vehicular power transmitting device. The control device has shifting-point altering means 108 operative such that when a second electric motor M2 is operated with priority to obtain a charging efficiency and/or electric power generating efficiency, a shifting point for a vehicle to run under a decelerating state (during a coast running state) is altered to a point on a higher vehicle speed than that at which a shifting point for a running-performance-conscious state is set. Therefore, when the second electric motor M2 is operated with priority for generating electric power, a downshift is initiated at a high vehicle speed than that at which the downshift is initiated at a shifting point for a running-performance-conscious state. This increases a rotation speed N_M2 of the second electric motor M2, resulting in an increase in regeneration amount (electric power generation amount) of the second electric motor M2.

The present invention discloses an ultra-deep and extra-thick dense sand stratum prestressed pipe pile long spiral lead hole construction method. The method comprises the following steps of: S1: siteformation and drill stem equipping: performing leveling and compaction for a site prior to place taking, or bedding a steel plate to facilitate place taking of a pile machine, and regulating equippingof the corresponding quantity of drill stems according to the depth of the lead holes to ensure the lead hole operation flow construction, wherein two lead hole drills are arranged on the site; and S2: location, paying-off and place taking of the pile machine: employing a total station to perform laying-off for preset lead hole stake positions, taking a drill machine in place to complete correction of the vertical degree of the drill stem and the centering of the center of the drill, and after location, putting down a support oil cylinder at the lower portion of a front-end mast and two support oil cylinders at the tail portion of the machine body of the drill machine. The ultra-deep and extra-thick dense sand stratum prestressed pipe pile long spiral lead hole construction method can extend the drill stem at will through connection according to pore-forming demands by employing a design of the hexagonal joint of the drill stem, can effectively ensure the reliable connection of the drill stem by only using a dual-way fixed plug pin after the drill stem is inserted when being connected and can meet the construction of an overlength pile hole.

The invention discloses an accurate control method for a buffer oil cylinder. Signal output ends of a high-position microswitch and a low-position microswitch are both in signal connection with a signal input end of a servo driver, a signal output end of the servo driver is in signal connection with a control end of a servo motor, a signal output end of a motor encoder of the servo motor is in signal connection with the servo motor, the servo driver is in signal connection with a controller, and the controller is in signal connection with a signal output end of a speed sensor on a load. The method includes: step one, load speed acquisition and control instruction sending; step two, servo motor rotation under PID control; step three, switch feedback control; step four, position shifting completion. High position shifting speed, high reliability and high position shifting accuracy are realized.

The invention provides a magnetic synchronizer and a transmission. The magnetic synchronizer comprises a gear hub, a joint sleeve, a first magnetic piece and a second magnetic piece, wherein the gearhub is used for being coaxially connected with an output shaft; the joint sleeve is coaxially arranged on the gear hub in a sleeving mode and used for freely sliding in the axial direction of the gearhub when being driven by external force; a plurality of N poles and S poles which are arranged in a staggered manner are arranged on the first magnetic piece, and the first magnetic piece is used forbeing fixedly connected with an idle gear which idles on the output shaft; the second magnetic piece is fixedly connected with the joint sleeve, and a plurality of N poles and S poles which are arranged in a staggered manner are arranged on the second magnetic piece; and when the magnetic synchronizer is used for gear shifting operation, a magnetic field generated by the first magnetic piece is matched to drive the joint sleeve and the idle gear to rotate synchronously. The magnetic synchronizer provided by the invention has no noise, and the structure of the synchronizer cannot be abraded; and friction is not generated in the gear shifting process, and the gear shifting speed is improved. The magnetic synchronizer also has the characteristics of low cost, convenient manufacture and longservice life.

The invention discloses a synchronous gear shifting type wet hydraulic clutch for an automatic gearbox. The synchronous gear shifting type wet hydraulic clutch comprises a power input and output component, a friction pair assembly, a control execution component, a synchronous feedback component and a sealing component. The synchronous gear shifting type wet hydraulic clutch is of an integrated design and integrates four parts of control, execution, cooling and lubrication; the working stability and the transmission efficiency of the clutch are improved through the integrated design; the dailymaintenance cost is reduced; the installation space is saved, and the use method is simpler, more convenient and more flexible. A friction pair is of a wet multi-piece structure formed by alternatelymounting steel and sintered/paper substrates, the specific pressure is high, the friction coefficient is large, the wear coefficient is small, and the heat capacity is high; the characteristics of thefriction pair determine that the size of the clutch is small, and the generated torque is large; the combined structure form can generate very high torque under very small inertia, and maintenance isbasically not needed; the friction pair is made of a metal sintered material, no asbestos component exists, and the environment cannot be polluted; and the ratio of the dynamic friction coefficient to the static friction coefficient of the multi-piece structure is small, meshing balance is achieved, and noise cannot be generated.

The invention discloses a novel worm gear type speed changer and a speed changing method thereof. In the speed changer, a first-gear worm gear and a second-gear worm gear are coaxially connected, an input shaft is fixedly connected to a worm gear shaft, the first-gear worm gear is engaged with a first-gear worm, the second-gear worm gear is engaged with a second-gear worm, the first-gear worm is coaxially connected to an axle of a first-gear speed reducing gear through a first-gear clutch, the second-gear worm is coaxially connected to an axle of a second-gear speed reducing gear through a second-gear clutch, the first-gear speed reducing gear and the second-gear speed reducing gear are both engaged with an output gear, an output shaft is fixedly connected with an axle of the output gear,and the second-gear clutch and the first-gear clutch are connected to a gear-shifting control device. The transmission ratio of the novel worm gear type speed changer is large, and the size of the speed changer is also reduced. In addition, during engagement of the gears, the gears are in rolling contact mainly, the worm gears and the worms are in sliding contact mainly, and therefore, factors forgeneration of noises and vibration are less.

The invention discloses a gear shifter provided with diameter-variable drum springs. The gear shifter provided with the diameter-variable drum springs comprises a drum shaft, a gear shifting drum array composed of gear shifting drums is arranged on the drum shaft, and gear shifting springs are arranged between every two adjacent gear shafting drums. Each gear shifting spring comprises a pair of cone-shaped diameter-variable spring bodies which are connected with each other in a welded mode. The gear shifting springs are made of stainless steel. In the using process, a user makes the gear shifting drums and the gear shifting springs to be connected to the drum shaft in a sleeving mode, so that the gear shifting springs are clamped between the gear shifting drums. Because the diameter-variable spring bodies are in cone shapes, the diameter-variable spring bodies can be directly clamped at the centers of the gear shifting drums, decentration and displacement of the gear shifting springs can be prevented effectively, thus the gear shifting speed of the gear shifter is effectively improved, and the impact resistance is high. The gear shifter provided with the diameter-variable drum springs is simple in structure, obvious in effect, low in cost and high in practicality.

The invention discloses a telescoping gear lever comprises a lever body, a pedestal, a pressure-sensitive housing, a leather sheath, a mount groove, a lifting rod, a pressure sensor and a control board; the leather sheath is arranged on the bottom of the lever body, and connected with the top end of the pedestal; the pressure-sensitive housing is arranged on the top of the lever body; the mount groove is arranged in the lever body; two ends of the lifting rod are respectively fixed in the mount groove; the pressure sensor is fixed in the mount groove and tightly attached to the pressure-sensitive housing; the control board is arranged in the lever body, and connected with the pressure sensor and the lifting rod; the bottom of the lifting rod is provided with a vehicle electronic control unit interface; the telescoping gear lever can automatically adjust the gear lever height according to the pressure applied on the gear lever by the driver, thus adapting to different driver positions, improving driver gearshift comfort level, and accelerating gearshift speed.

The invention discloses a double-speed transmission for an electric vehicle, which comprises a first planetary gear set, a second planetary gear set, a differential mechanism, a first brake and a second brake, and is characterized in that the first planetary gear set comprises a first sun gear, a first planetary gear carrier and a first annular gear ring which are distributed from inside to outside; the first sun gear is used for being connected with a driving shaft of a driving motor, the second planetary gear set comprises a second sun gear, a second planetary gear carrier and a second annular gear ring which are distributed from inside to outside, and the second annular gear ring is used for being connected with a differential mechanism; wherein the first annular gear ring is fixedly connected with the second planetary gear carrier, the first planetary gear carrier is fixedly connected with the second sun gear, the first planetary gear carrier is connected with the first brake, and the second planetary gear carrier is connected with the second brake. The gear shifting mechanism is simple in structure, low in manufacturing cost, high in gear shifting speed and high in transmission efficiency, and is very suitable for being used in the electric automobile.

The invention discloses a transmission gear shifting device and belongs to the field of electric vehicles. The shifting device comprises a push-pull mechanism, a rotating mechanism and a shifting mechanism, wherein the push-pull mechanism comprises a linear reciprocating motion mechanism and a connecting rod or a lever connected with the linear reciprocating motion mechanism; the rotating mechanism comprises a push-pull barrel and a shifting rotating barrel opposite to the push-pull barrel; fixing sleeves are arranged on the peripheries of the push-pull barrel and the shifting rotating barrel; and a motion decomposition mechanism is arranged on the inner circumference of the fixing sleeve, the motion decomposition mechanism transmits axial motion to the shifting fork and simultaneously performs circumferential rotation, the circumferential rotation changes the pause position of the axial motion, and the shifting rotating barrel pauses once at the starting point or the ending point of the axial motion every time the axial motion is performed, so that the shifting rotating barrel is shifted once between a low-speed gear and a high-speed gear. According to the transmission gear shifting device, the gear shifting mode can be simplified, the gear shifting speed is increased, the driving hidden danger in the vehicle driving process is reduced, and the vehicle driving safety is improved.

The invention relates to a transmission. The transmission is characterized in that hydraulic oil enters into a first oil transportation passage and a second oil transportation passage through a firstcircular groove and a second circular groove which are formed in an input shaft, and the hydraulic oil is transported to a first friction disk controller or a second friction disk controller through the first oil transportation passage or the second oil transportation passage, the first friction disk controller is matched with a first driving gear or the second friction controller is matched witha second driving gear, and the first driving gear or the second driving gear starts rotating. According to the transmission, the oil transportation passages of the hydraulic oil are arranged in the input shaft, the structure of the transmission is simplified to reduce the size of the transmission, the oil transportation passages of the hydraulic oil can be prevented from external interference, andthe hydraulic controlling manner of the friction plate controllers is adopted as a clutch controlling manner, so that gear shifting time is reduced and shifting speed is improved. The invention further relates to an electric vehicle.

A vehicle transmission has a continuously variable speed change mechanism provided between an input shaft to which a torque output by a driving force source is transmitted and an output shaft from which a torque is output to a driving wheel. The transmission is able to selectively block torque transmission between the mechanism and the output shaft. The mechanism is rotated by the driving force source with torque transmission between the mechanism and the output shaft blocked. A control apparatus limits a shifting speed of the mechanism to or below an upper-limit speed determined in advance in a case where a speed ratio of the mechanism is changed with the mechanism rotated by the driving force source that is subjected to idling rotational speed control, while the mechanism is blocked from the output shaft such that no torque is transmitted between the mechanism and the output shaft.