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Gear shifting air cylinder of automatic gearbox

A technology for automatic transmission and shifting cylinders, which is applied to components with teeth, transmission control, fluid pressure actuation devices, etc., can solve the problem of large space occupied by multiple cylinders, and reduce manufacturing costs and space. Effect

Inactive Publication Date: 2021-06-04
孟庆九
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcoming that multiple cylinders occupy a large space in the prior art, and propose a shift cylinder of an automatic transmission

Method used

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  • Gear shifting air cylinder of automatic gearbox
  • Gear shifting air cylinder of automatic gearbox
  • Gear shifting air cylinder of automatic gearbox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] refer to Figure 1-3 , a shifting cylinder of an automatic transmission, comprising a cylinder body 1, a corresponding mounting seat 2 is fixedly installed on the outside of the cylinder body 1, a first piston chamber 11 is provided at one end of the cylinder body 1 inside, and the inside of the first piston chamber 11 is A first piston rod 3 is slidably installed, the first piston rod 3 penetrates the side wall of the cylinder body 1, and extends to the outside of the cylinder body 1, and the outer end of the first piston rod 3 is fixedly installed with a corresponding first shift fork 31, The inner end of the first piston rod 3 is fixedly equipped with the first piston 32, the first piston 32 can slide along the inner wall of the first piston chamber 11, the outer edge of the first piston rod 3 is provided with the second piston rod 4, the second piston rod 4 Two piston rods 4 are slidably connected with the first piston rod 3, the second piston rod 4 runs through the...

Embodiment 2

[0025] refer to Figure 1-4 , as another preferred embodiment of the present invention, the difference from Embodiment 1 is that a buffer assembly 10 is installed between the first piston 32 and the second piston rod 4, the buffer assembly 10 includes an insertion rod 101, and the second piston rod 4 There is a slot 102 matching the insertion rod 101 at the end of the slot 101, the insertion rod 101 can be plugged into the corresponding slot 102, and is slidably connected with the inner wall of the slot 102, and a buffer spring is fixedly installed inside the slot 102 103 , the outer end of the buffer spring 103 is fixedly connected with the corresponding insertion rod 101 . When the first piston 32 moves, the plunger 101 can slide in the slot 102 and act on the buffer spring 103, and the buffer spring 103 provides a buffer force to avoid contact friction between the first piston 32 and the second piston rod 4 causing the second piston rod 4 wear and tear.

Embodiment 3

[0027] refer to Figure 1-5 , as another preferred embodiment of the present invention, the difference from Embodiment 1 or Embodiment 2 is that the end of the first piston rod 3 away from the first shift fork 31 is fixedly installed with the third piston rod 5, and the cylinder body 1 is fixed inside A guide seat 15 corresponding to the third piston rod 5 is installed, and the third piston rod 5 is slidably connected with the guide seat 15. The inner side of the guide seat 15 is provided with a third piston chamber 16, and the third piston rod 5 is fixedly installed with a corresponding The third piston 51 and the fourth piston 52, the third piston 51 and the fourth piston 52 are arranged parallel to each other, the third piston 51 and the fourth piston 52 can slide along the inner wall of the third piston chamber 16, and the outer surface of the cylinder body 1 An end cover 6 is installed at the end, and a number of mounting bolts 7 are installed on the outer thread of the e...

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Abstract

The invention relates to the technical field of gearbox gear shifting air cylinders, in particular to a gear shifting air cylinder of an automatic gearbox. The gear shifting air cylinder comprises a cylinder body, a corresponding mounting seat is fixedly mounted on the outer side of the cylinder body, a first piston cavity is formed in one end of the inner side of the cylinder body, and a first piston rod is slidably mounted in the first piston cavity; a corresponding first shifting fork is fixedly mounted at the outer end of the first piston rod, a first piston is fixedly mounted at the inner end of the first piston rod, the first piston can slide along the inner wall of the first piston cavity, the outer edge of the first piston rod is sleeved with a second piston rod, and a second shifting fork is fixedly mounted at the outer end of the second piston rod; and a second piston is fixedly mounted at the inner end of the second piston rod, and a second piston cavity corresponding to the second piston is formed in the cylinder body. Linkage of the multiple pistons can be achieved in the same air cylinder, so that gear engaging is achieved without linkage of multiple air cylinders, and the manufacturing cost and the occupied space are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of a transmission shift cylinder, in particular to a shift cylinder of an automatic transmission. Background technique [0002] The gearbox is a very important part of the vehicle. It can change the transmission ratio and expand the torque and speed of the driving wheels. With the development of modern technology, the gearbox has also been upgraded. From the initial manual gearbox to the current stepless gearbox, from no synchronizer to synchronizer, the operation is more and more convenient; currently, diesel engines are widely used in construction machinery. The variation range of its torque and speed is small, which cannot meet the requirements of traction and driving speed of the vehicle under various working conditions. A gearbox is needed to solve this contradiction; the electronically controlled pneumatic shift control mechanism of the automatic gearbox is very important. Generally, the automatic tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/22F16H61/30
CPCF15B15/1423F15B15/1452F15B15/1471F15B15/149F15B15/226F16H61/30
Inventor 孟庆九
Owner 孟庆九