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Wedge block structure of arc-shaped surface inclined strut clutch and calculation method thereof

An arc-shaped, clutch technology, applied to clutches, one-way clutches, geometric CAD, etc., can solve problems such as design methods and basis not given, and achieve theoretical effective lift optimization, overall performance improvement, and turning torque improvement Effect

Pending Publication Date: 2020-01-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural data in the early foreign literature is the main reference basis for the design and calculation of the domestic circular arc profile clutch, but the specific position of the details such as the width of the wedge is not given, and the design method and basis contained in it are not given.

Method used

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  • Wedge block structure of arc-shaped surface inclined strut clutch and calculation method thereof
  • Wedge block structure of arc-shaped surface inclined strut clutch and calculation method thereof
  • Wedge block structure of arc-shaped surface inclined strut clutch and calculation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0093] Embodiment 1: For specification J 0 = 6.3 standard wedge for calculation and optimization, given 5 basic parameters. According to the above method and calculation formula (I)-(XIII), obtain the important positioning parameter L of the wedge width b 0 = 1.7054. At this time, the maximum lift is S ry = 0.3072.

Embodiment 2

[0094] Embodiment 2: For specification J 0 =8.331 of the standard wedge for calculation and optimization, given 5 basic parameters. According to the above method and calculation formula (I)-(XIII), obtain the important positioning parameter L of the wedge width b 0 =2.2425. At this time, the maximum lift is S ry = 0.4498.

Embodiment 3

[0095] Embodiment 3: for specification J 0 =9.5 standard wedge for calculation and optimization, given 5 basic parameters. According to the above method and calculation formula (I)-(XIII), obtain the important positioning parameter L of the wedge width b 0 =2.4487. At this time, the maximum lift is S ry = 0.4168.

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Abstract

The invention discloses a wedge block structure of an arc-shaped surface inclined strut clutch and a calculation method thereof, including providing a calculation method for kinematics analysis and graphic conversion. According to the calculation result, structural positioning in the width direction of the inclined strut block is corrected, then the arc lengths of the upper arc and the lower arc of the wedge block are distributed in proportion, and the effective lift value of the wedge block is optimized, wherein the steps include kinematics analysis of the wedge block, a maximum lift determining method and a maximum lift solving method. The invention belongs to the technical field of design methods of inclined strut clutches, and particularly provides a wedge block structure of an arc-shaped surface inclined strut clutch and a calculation method thereof, being characterized in that on the premise that basic parameters are not changed, the structure of the inclined strut block in the width direction is corrected and optimized, so as to enable the effective cam lift SR of four standard inclined strut blocks to be theoretically and completely larger than corresponding original standard data and reach the maximum value, thus improving the overall overturning moment and the limit load of the clutch, and improving the overall performance of the clutch.

Description

technical field [0001] The invention belongs to the technical field of design methods of sprag clutches, in particular to a wedge block structure of a sprag clutch with an arc profile and a calculation method thereof. Background technique [0002] Forced continuous sprag clutches and all-phase sprag clutches, both of which are friction overrunning clutches, overrunning clutches are a type that can automatically engage or The disengaged clutch, among which the sprag clutch has the characteristics of large transmission torque and small mass, is widely used in the working environment of helicopter transmission system, starter of aeroengine, and automatic transmission car gearbox. The structural data in the early foreign literature is the main reference basis for the design and calculation of the domestic arc profile clutch, but the specific position of the details such as the wedge width is not given, and the design method and basis contained in it are not given. In the later ...

Claims

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Application Information

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IPC IPC(8): G06F30/17F16D41/063
CPCF16D41/063
Inventor 卢敏靳国栋李继峰李政民卿
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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