33results about How to "Gear shifting" patented technology

The invention discloses a gear selecting and shifting actuating mechanism and an automatic transmission and relates to the technical field of transmissions, aiming at preventing the situation that gears collide with each other from occurring during gear selection of the transmission. The gear selecting and shifting actuating mechanism comprises a gear selecting motor, a gear selecting shaft, a gear shifting motor, a gear shifting shaft, a gear shifting block, shifting fork shafts and shifting forks, wherein the gear selecting motor is connected with the gear selecting shaft in a driving way, the gear shifting motor is connected with the gear shifting shaft in a driving way, the gear selecting shaft is connected with the gear shifting shaft through a thread pair, the gear shifting block which can rotate along the circumferential direction of the gear shifting shaft is sheathed on the gear shifting shaft, the shifting fork shafts are arranged below the gear shifting block and are arranged at intervals in parallel along the axial direction of the gear shifting shaft, and a shifting fork is fixedly arranged on each shifting fork shaft. When the gear shifting block rotates along the circumferential direction of the gear shifting shaft, one shifting fork shaft is driven to move along the axial direction of the shifting fork shaft. The gear selecting and shifting actuating mechanism is mainly used in automobile transmissions.

The invention provides a gearshift mechanism, a gearbox and an electric vehicle. The gearshift mechanism comprises a gearshift motor, a shifting fork shaft and a shifting fork. The gearshift motor is connected with the shifting fork shaft and used for driving the shifting fork shaft to rotate around the axis of the shifting fork shaft. The shifting fork is installed on the shifting fork shaft, and the shifting fork shaft can drive the shifting fork to move along the extension direction of the shifting fork shaft when the shifting fork shaft rotates around the axis of the shifting fork shaft. The shifting fork shaft is driven to rotate by using the gearshift motor in gearshifting, and the shifting fork shaft can drive the shifting fork to move along the extension direction of the shifting fork shaft when the shifting fork shaft rotates around the axis of the shifting fork shaft so as to realize gearshifting. Manual operation of a driver is not required in the gearshift process so that the gearshift operation is enabled to be easy and convenient, and the use comfortableness and convenience can be enhanced.

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 an electric vehicle driving system with a stepless speed changing function. The electric vehicle driving system comprises a driving shaft and tires. A gearbox is arranged on the driving shaft and rotatably connected with the driving shaft, and a first-gear driven gear, a second-gear driven gear and a third-gear driven gear are fixedly installed on the portion, in the gearbox, of the driving shaft in sequence from left to right. A first rotating shaft is rotatably connected to the gearbox, a bearing is fixedly installed on the first rotating shaft, and a first-gear driving gear, a second-gear driving gear and a third-gear driving gear are rotatably connected to the bearing on the first rotating shaft in sequence from left to right. The first-gear driving gear, the second-gear driving gear and the third-gear driving gear are engaged with the first-gear driven gear, the second-gear driven gear and the third-gear driven gear in sequence. The speed of an electric vehicle is changed by arranging the gearbox.

The invention discloses a manual gear shifting device of a two-gear speed changing box. In the process that an electric automobile is switched to a low-speed gear from a high-speed gear, after a synchronizer is moved to a neutral gear from the high-speed gear, a gear shifting controller firstly detects whether the difference value of the rotation speed of the synchronizer and the rotation speed of a low-speed tooth is smaller than the set value h1 or not, if the difference value of the rotation speed of the synchronizer and the rotation speed of the low-speed tooth is larger than the set value h1, it is shown that the rotation speed difference value of a synchronous tooth and the low-speed tooth is too large, gear shifting cannot be conducted, then the gear shifting controller controls a motor to accelerate so that the rotation speed of the low-speed tooth can be increased till the rotation speed difference value of the low-speed tooth and the synchronizer is smaller than h1, then the synchronizer is stirred to the low-speed tooth position, synchronous engagement is achieved, and gear shifting is achieved. By utilization of the method, any switchover from the high-speed gear to the low-speed gear can be achieved for the electric automobile.

This invention is automatic double clutches engine gear change arm. There are locating reed, first driving board, spacing board, reset reed, gasket and clasp on the gear changing shaft. The said first driving board is active cased on the gear changing shaft. The spacing board and gear changing shaft are welded together. The slot, which bottom edge has bend arm, is set on the middle part of the said first driving board. The bend arm is set between the two clamping feet of reset reed. The reset reed is locked by clasp. The 'L' shaped second driving board is welded on the gear changing shaft outside locating reed. The bend arm of second driving board passes through slot and extends into two clamping feet of reset reed. The reset reed is arranged between first and second driving boards. The gear changing shaft outside the second driving board is arranged with operating arm through spline. This invention can automatically separate the clutch when changing gear.

The invention relates to the field of drilling equipment and in particular relates to a power box for a reciprocating drilling mud pump. The power box comprises a box body, wherein a crankshaft is rotationally arranged in the box body; a connecting rod is arranged on the crankshaft in a matched manner; a driving shaft and a gear-shifting shaft parallel to the crankshaft are arranged in the box body; a gear-shifting driving gear set capable of axially sliding along the driving shaft is arranged at a part, which is positioned in the box body, of the driving shaft in a sleeving manner; a gear-shifting driven gear set corresponding to the gear-shifting driving gear set is arranged on the crankshaft; and a shifting fork used for shifting the gear-shifting driving gear set and the gear-shiftingdriven gear set to be in corresponding meshed connection is arranged at a part, which is positioned in the box body, on the gear-shifting shaft. The power box disclosed by the invention is compact instructure and stable in performance and has a speed control gear-shifting function, and the quantity of gears of a reducer matched with the power box can be reduced under the condition that the size is basically invariable, so that the mud pump reducer assembly has small spacing size and multiple gear options and has a wide application range under the well.

The embodiment of the invention provides a gear selection and shift control mechanism and a gear shift rocker arm assembly thereof. The gear shift rocker arm assembly comprises a gear shift rocker arm, a balance weight device connected to the gear shift rocker arm and a damping device arranged between the gear shift rocker arm and the balance weight device and used for isolating the gear shift rocker arm from the balance weight device. According to the gear selection and shift control mechanism and the gear shift rocker arm assembly thereof, vibration transmitted by an engine to a gear shift handle can be reduced.

The invention discloses an electronic gear shifting device which comprises an upper support, a lower support, a gear shifting return mechanism and an induction mechanism. The upper support and the lower support are matched to form a containing cavity, a sliding groove is formed in the upper support, and a gear block is assembled on the lower support; the gear shifting return mechanism is assembled in the containing cavity, extends out of the containing cavity through the sliding groove and is used for moving along the sliding groove and the gear block to achieve gear shifting and automatic return; and the induction mechanism is arranged on the upper support and used for forming a gear signal according to the movement position of the gear shifting return mechanism. The electronic gear shifting device does not need to be manually returned by a user, effectively improves the gear shifting efficiency, and meanwhile has the advantages of being simple in structure and effectively saving cost.

The invention belongs to the field of transmissions, and discloses a multi-gear transmission operating system. The multi-gear transmission operating system comprises an air reservoir, a middle position air cylinder assembly, a gear shifting rod, an operation hand ball, an air path control valve, a gear change shifting block, a single H valve, an auxiliary box shifting fork shaft and an air reservoir air outlet which are sequentially connected with a pressure regulating valve, a clutch separating pump switch, an interlocking valve and a backset cylinder; the air inlets of the operation hand ball and the air path control valve are connected with an air outlet of the pressure regulating valve correspondingly; the operation hand ball and the air path control valve are connected with the singleH valve, an air outlet of the single H valve is connected with a low gear side of the middle position air cylinder assembly and an air inlet at a high gear side, and a high-low gear pre-selection switch connected with the single H valve is arranged on the operation hand ball; one end of the auxiliary box shifting fork shaft is connected with the middle position air cylinder assembly, an interlocking control block is arranged on the other end of the auxiliary box shifting fork shaft, and a radial protruding block is arranged on the interlocking control block; one end of the gear change shifting block is connected with the air path control valve, and the other end of the gear change shifting block is connected with the gear shifting rod. According to the operating system, the damage to a synchronizer by misoperation is effectively prevented, the failure rate of the synchronizer is reduced, the vehicle is guaranteed to operate well, and the maintenance service cost is saved.