Transmission device in manner of same-directional involute gear pair engagement

A technology of involute gears and transmissions, which is applied in hoisting devices, portable lifting devices, belts/chains/gears, etc. It can solve the problems of no separability, adaptability, manufacturing difficulties, and high center distance accuracy requirements. Achieve long service life, low maintenance cost and small contact stress

Active Publication Date: 2015-12-09
重庆市綦江区余江齿轮有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the center distance between the two gears requires high precision, no separability, no adaptability, and difficult to manufacture

Method used

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  • Transmission device in manner of same-directional involute gear pair engagement
  • Transmission device in manner of same-directional involute gear pair engagement
  • Transmission device in manner of same-directional involute gear pair engagement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0435] Embodiment 1: single large negative gear meshing transmission

[0436] The first-gear gear of the 6T53 automobile gearbox, the installation center distance is a=123, and the transmission ratio is required to be i=5. According to the calculation, actually determine the pinion z 1 =9, large gear z 2 =43, modulus m n =5, pressure angle α n =22.5°, helix angle β=8.1272222222° (8°7'38"). Specific gear and hob parameters are shown in Table 1~Table 2:

[0437] Table 1: Gear parameter table (single large negative gear transmission)

[0438]

[0439] Table 2: Hob parameter table (big gear)

[0440]

[0441]

Embodiment 2

[0442] Embodiment 2: double large negative gear meshing transmission (i=1)

[0443] Steyr drive axle cylindrical gear, center distance a=193, transmission ratio i=1, calculate and determine pinion z 1 = 31, large gear z 2 =31, modulus m n =6.5, pressure angle α n =22.5°, helix angle β=14.92833333° (14°55'42"). Specific gear and hob parameters are shown in Table 3 and Table 4:

[0444] Table 3: Gear parameter table (double large negative gear transmission i=1)

[0445]

[0446] Table 4: Hob parameter table

[0447] serial number parameter name symbol value Remark 1 modulus m n 6.5

Embodiment 3

[0448] Embodiment 3: double large negative gear meshing transmission (i>1)

[0449] Steyr drive axle cylindrical gear, center distance a=193, transmission ratio i=1.2, pinion z is used for calculation 1 =28, large gear z 2 =34, modulus m n =6.5, pressure angle α n =22.5°, helix angle β=14.92833333° (14°55′42″), tooth width b=36. Specific gear and hob parameters are shown in Table 5 to Table 7:

[0450] Table 5: Gear parameter table (double large negative gear transmission i>1)

[0451]

[0452]

[0453] Table 6: Hob parameter table (pinion)

[0454] serial number parameter name symbol value Remark 1 modulus m n 6.5

2 Pitch circle normal pressure angle α n 22.5°

3 Effective tooth height h 10.675 Excluding addendum chamfer height 4 Boundary scalloped thickness S Jl 8.708

5 Boundary crest height h Ja 3.048

Pitch thickness s w 9.520

Pitch crest height h wa 3.843 ...

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Abstract

The invention discloses a transmission device in a manner of same-directional involute gear pair engagement. The transmission device comprises a pair of mutually-engaged gears, and is characterized in that the working tooth profiles located at tooth roots, of the gear teeth of one gear are concave involutes; the working tooth profiles located at tooth tops, of the gear teeth of the other gear are convex involutes; and the concave involutes and the convex involutes are engaged by convex-concave arcs. The transmission device disclosed by the invention has the advantages of being long in service life, high in transmission reliability, low in maintenance expense, easy to install, and the like.

Description

technical field [0001] The invention relates to the technical field of gear transmission in mechanical transmission, in particular to a co-rotating involute gear pair meshing transmission device. Background technique [0002] Mechanical transmission refers to the transmission that uses mechanical means to transmit power and motion. The types of commonly used mechanical transmission systems include gear transmission, worm gear transmission, belt transmission, chain transmission, and wheel train. Among them, gear transmission is the most widely used form of transmission in mechanical transmission. Its transmission is relatively accurate, high in efficiency, compact in structure, reliable in operation and long in life. During gear transmission, the tooth profiles of the two wheels must meet the following conditions: "No matter where the two tooth profiles are in contact, the common normal line passing through the contact point must pass through the fixed point C on the connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/08
CPCF16H55/0806F16H55/17
Inventor 谭富春
Owner 重庆市綦江区余江齿轮有限公司
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