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Speed change mechanism for changing center distance during shaft movement

A speed change mechanism and center distance technology, applied in mechanical equipment, transmission devices, belts/chains/gears, etc., can solve problems such as changes, inapplicability of speed-up transmission, and failure of flexible shafts to transmit high torque

Pending Publication Date: 2018-05-08
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In mechanical variable speed transmission, the center distance between the two shafts is usually relatively fixed, but in some cases the center distance between the two shafts needs to be changed, especially the problem of variable center distance between the two shafts during motion is difficult to solve. Usually, a flexible shaft is used for transmission, but the flexible shaft cannot transmit large torque, especially not suitable for speed-up transmission.

Method used

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  • Speed change mechanism for changing center distance during shaft movement
  • Speed change mechanism for changing center distance during shaft movement
  • Speed change mechanism for changing center distance during shaft movement

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Embodiment Construction

[0020] exist Figure 1 to Figure 6 Among them, represent the connection and the positional relation of the structural composition of the present invention and parts, also be the embodiment that two axles are moved to the upper position. A speed change mechanism with shaft movement and variable center distance, comprising a housing (1), a lower shaft mechanism, an upper shaft mechanism and a sprocket speed change mechanism.

[0021] The housing (1) is provided with a shaft groove (2) and a track (13); the lower shaft mechanism consists of a lower shaft (4), a bearing (11), a lower carriage (3), a shaft sleeve (9), and a large sprocket (15 ) and key (21); the upper shaft mechanism is composed of upper shaft (8), bearing (11), upper block (7), axle sleeve (9), small sprocket (14) and key (21); sprocket Speed ​​change mechanism is made of slide block (10), slide block cover (6), slide block shaft (20), duplex sprocket wheel (16), center frame (17), chain (12), small sprocket whee...

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Abstract

The invention discloses a speed change mechanism for changing center distance during shaft movement. The speed change mechanism comprises a shell, a lower shaft mechanism, an upper shaft mechanism anda chain wheel speed change mechanism. The shell is provided with a shaft groove and a track, a lower tackle of the lower shaft mechanism and an upper tackle of the upper shaft mechanism are arrangedin the track, the lower tackle is provided with a lower shaft, the upper tackle is provided with an upper shaft, the lower tackle and the upper tackle can move up and down on the track, and thereforeup-down movement of the lower shaft and the upper shaft is achieved. The lower shaft is connected to the upper shaft through the chain wheel speed change mechanism, the chain wheel speed change mechanism is the speed change mechanism for achieving four-level chain transmission, and the large transmission ratio can be achieved. By the adoption of the way that a center shaft and a shaft frame are adopted for installing a chain wheel, according to the speed change mechanism, the transmission shaft relative position is moved and changed on the condition that the transmission ratio is not changed.

Description

technical field [0001] The invention relates to a mechanical transmission mechanism, in particular to a speed change mechanism in which the transmission ratio is constant and the position of the transmission shaft changes due to the movement of the shaft and the center distance. Background technique [0002] In mechanical variable speed transmission, the center distance between the two shafts is usually relatively fixed, but in some cases the center distance between the two shafts needs to be changed, especially the problem of variable center distance between the two shafts during motion is difficult to solve. Usually, a flexible shaft is used for transmission, but the flexible shaft cannot transmit large torque, especially it is not suitable for speed-up transmission. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention provides a speed change mechanism in which the shaft moves and the center distance is changed. This...

Claims

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Application Information

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IPC IPC(8): F16H9/24
CPCF16H9/24
Inventor 曹辉崔宇孙学雁
Owner SHENYANG POLYTECHNIC UNIV