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Speed changer capable of preselecting gears

A technology of transmission and pre-selection, applied in instruments, differential transmissions, controlled components, etc., can solve problems such as oil consumption, waste of time, inability to transmit large torque, etc., and save time when friction increases. Effect

Inactive Publication Date: 2015-06-24
CHONGQING JIAKA GEARBOX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the shifting mechanism of automobiles is generally to toggle gears or other gear-shifting mechanisms, so that a certain gear pair in the original gear position is disengaged from the transmission, and then the gear pair in another gear position is put into operation, but it must be stepped on before shifting gears. Press the clutch pedal to interrupt the power transmission, so that the meshing pair of the original gear can be disengaged, and at the same time, the speed of the meshing part of the new gear meshing pair can be gradually synchronized. This process from interrupting the power transmission to the new gear synchronizing requires A waste of time and a waste of fuel at the same time
In order to continuously transmit the power of the engine to the wheels during the shifting process to realize power shifting, a dual-clutch transmission is usually used. Big needs a short time, so it is impossible to completely shift gears without intervals
And because the dual-clutch transmission adopts a friction transmission system, limited by the friction force, it cannot transmit large torque, and it generates high heat and is easy to wear

Method used

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  • Speed changer capable of preselecting gears
  • Speed changer capable of preselecting gears

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2As shown, the present invention consists of housing 1, input shaft 2, output shaft 3, sun gear shaft 4, planetary gear 5, ring gear 6, planet carrier 7, reverse gear 8, synchronizer 9, shaft sleeve 10, input gland 13. Central shaft 14, input gear 15, brake pad 16, first countershaft gear 17, second countershaft gear 18, third countershaft gear 19, fourth countershaft gear 20, first output gear 21, second countershaft gear Output gear 22, the 3rd auxiliary output gear 23, the 4th output gear 24, shift fork 25, piston rod 26, piston 27, cylinder body 28 and parts such as power gear 29 are made up of. The tail portion of the input shaft 2 extends into the housing 1 , and an input gear 15 and a reverse gear 8 are integrally formed on the tail portion of the input shaft 2 . The reverse gear 8 is located at the rear end of the input gear 15 . Two sets of epicyclic gear trains are also provided in the housing 1, and the two epicyclic gear trains a...

Embodiment 2

[0025] The first output gear 21 is sleeved on the output shaft 3, the first countershaft gear 17 is sleeved on the ring gear shafts 6b of the two epicyclic gear trains, and the first countershaft gears of the two epicyclic gear trains 17 are all meshed with the first output gear 21. The rest of this embodiment is the same as Embodiment 1. When braking is required, the purpose of braking can be achieved by clamping the brake pads.

Embodiment 3

[0027] A first output gear 21 and a second output gear 22 are sequentially sleeved on the output shaft 3, and a shaft sleeve 10 is arranged between the first output gear 21 and the second output gear 22, and the shaft sleeve 10 is sleeved on the output shaft. 3; the first countershaft gear 17 and the second countershaft gear 18 are looped sequentially on the ring gear shafts 6b of the two epicyclic gear trains, and the first countershaft gear 17 of the two epicyclic gear trains is all connected with The first output gear 21 is meshed, and the second countershaft gear 18 of the two epicyclic gear trains is meshed with the second output gear 22; a synchronizer 9 is sleeved on the ring gear shafts 6b of the two epicyclic gear trains , the synchronizer 9 is located between the first countershaft gear 17 and the second countershaft gear 18; the two synchronizers 9 are connected to the fork mechanism; there is only one countershaft gear on the planetary gear train through the synchro...

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Abstract

A transmission capable preselecting gears. An input gear (15) is sleeved on a tail portion of an input shaft (2). Two epicyclic gear trains are arranged in a shell (1). A sun gear (4a) is further mounted on a shaft body of a sun gear shaft (4), and the sun gear (4a) is engaged with a planetary gear (5). The planetary gear (5) is sleeved on a planet carrier (7), and the planet carrier (7) is connected to a transmission mechanism. The gear ring (6) is supported in the shell (1) through a bearing. A gear ring shaft (6b) is fixedly connected to a tail portion of the gear ring (6). A countershaft gear is sleeved on the gear ring shaft (6b), and the countershaft gear is engaged with an output gear. Two epicyclic gear trains are disposed in the shell and engaged with the input shaft; the two epicyclic gear trains are switched between the planetary gear train and the differential gear train, achieving the purpose of unintermittent gear shift. The mechanical transmission reduces the energy loss, and has a simple structure and low energy consumption.

Description

technical field [0001] The invention relates to a gear transmission device, in particular to a transmission with preselectable gears. Background technique [0002] The transmission is a gear transmission device that can fix or change the transmission ratio of the output shaft and the input shaft. The transmission on the car changes the torque of the crankshaft of the engine by changing the transmission ratio to adapt to different conditions such as starting, accelerating, driving and overcoming various road obstacles. Under driving conditions, the need for different requirements for driving wheel traction and vehicle speed is one of the most important components in the automotive drive train. At present, the shifting mechanism of automobiles is generally to toggle gears or other gear-shifting mechanisms, so that a certain gear pair in the original gear position is disengaged from the transmission, and then the gear pair in another gear position is put into operation, but it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/46F16H3/78F16H48/06F16H57/023F16H63/32
CPCF16H3/006F16H3/721
Inventor 石崇华李华玲
Owner CHONGQING JIAKA GEARBOX