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Speed change mechanism for high-speed and low-speed two-gear transmission

A speed change mechanism, low-speed technology, applied in the direction of transmission, gear transmission, mechanical equipment, etc., can solve the problems of inappropriate, low maintainability, low separation efficiency, etc.

Pending Publication Date: 2021-05-18
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diaphragm spring clutch it uses has low separation efficiency, easy wear and low maintainability under high power and high torque; the input shaft and output shaft are connected by bearings, and the connection between input and output under high-speed conditions The vibration will be transmitted, and the reliability of the work under high torque and high speed will be reduced
[0007] Patent CN 207648065 U proposes a power shift tractor high-low gear and power reversing transmission assembly, which adopts a three-shaft arrangement and introduces three clutches to control the gears of the transmission system. There is no power interruption, but its superiority is oriented to the scene of tractors, and it is not suitable for helicopters. In the application occasions of high power and light weight of helicopters, the three rows of gears of this structure cause structural redundancy. , and the planetary gear transmission without power split will cause insufficient structural strength and relatively large overall size

Method used

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  • Speed change mechanism for high-speed and low-speed two-gear transmission
  • Speed change mechanism for high-speed and low-speed two-gear transmission
  • Speed change mechanism for high-speed and low-speed two-gear transmission

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Embodiment Construction

[0025] The present invention will be further described in detail below by way of examples. Through these descriptions, the features and advantages of the present invention will become more apparent. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them.

[0026] Such as Figure 1-5 As shown, the transmission mechanism for high and low speed two-speed transmission in this embodiment includes: input motor 1, input shaft 2, casing 3, primary planetary gear train, secondary planetary gear train, spline shaft 23, A shaft coupling 25 and a load working machine 26; the primary planetary gear train includes a primary planet carrier 10, a primary needle roller and cage assembly 11, a primary ring gear 12, a primary sun gear 13 and a primary planetary gear The first-stage planet carrier 10 is rotatably assembled with the input shaft 2 through the support bearing 9 at the input end, and the shaft section of the first-stage ...

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Abstract

The invention discloses a speed change mechanism for high-speed and low-speed two-gear transmission. The speed change mechanism comprises an input motor, an input shaft, a casing, a primary planetary gear train, a secondary planetary gear train, a spline shaft, a coupler and a load working machine, wherein the primary planetary gear train comprises a primary planet carrier, a primary roller pin and retainer component, a primary ring gear, a primary sun gear and a primary planetary gear, the secondary planetary gear train comprises a secondary planetary gear, a secondary ring gear, a secondary roller pin and retainer component and a secondary planet carrier, and the primary planetary gear and the secondary planetary gear are connected into a whole to form a duplex planet gear shaft; and an input end clutch is arranged between the primary ring gear and the casing, and an output end clutch is arranged between the shaft section of the secondary ring gear and the spline shaft. The speed change mechanism is high in integration degree and can be applied to occasions with high power, large torque and high rotating speed, the reliability and efficiency of transmission under the requirements of low mass and small size are guaranteed, the stability of the gear shifting process is improved, and the situation of power interruption is avoided.

Description

technical field [0001] The invention relates to the technical field of two-speed transmission without power interruption, in particular to a high-speed and low-speed two-speed transmission transmission mechanism including an overrunning clutch, a friction clutch and a planetary gear train. Background technique [0002] The function of the mechanical transmission mechanism is to change the movement mode, direction or speed provided by the power to meet the needs of people in different environments. For example, in the common automobile transmission system, the driver can change the gear of the car according to the driving needs to meet the driving needs; some gearboxes used in daily life can adjust the speed to the range that meets the needs and adapt to the working environment. [0003] There are three main ways to change the speed transmission of the helicopter. One is to change the speed of the piston engine through the control system, thereby changing the speed output by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44
CPCF16H3/44
Inventor 谭武中严宏志韩奉林吴江明向恩明陈志
Owner CENT SOUTH UNIV
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