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Small rotation angle transmission device with anti-backlash mechanism for astronomical machinery

A technology of rotation angle and transmission device, which is applied to transmission device parts, mechanical equipment, belts/chains/gears, etc., can solve problems that affect popularization and use, complex structure of anti-backlash mechanism, and difficult assembly, so as to save equipment cost and power Consumption, save the motor and drive circuit, reliable performance effect

Active Publication Date: 2016-04-13
NANJING ZHONGKE ASTROMOMICAL INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the anti-backlash mechanism is still too complicated, and the assembly is relatively difficult, which affects its popularization and use.

Method used

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  • Small rotation angle transmission device with anti-backlash mechanism for astronomical machinery

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Embodiment Construction

[0022] Such as figure 1 Shown: the present invention comprises transmission box 1 and rotating shaft 3, and axle sleeve 6, and axle sleeve 6 is fixedly connected with the casing of transmission box; For the same pre-stretched spring, the first spring 2 is fixed at two points C and D, the second spring 5 is fixed at two points A and B, and the fixed points A and C are on the bushing. Points B and D are on the end face of the rotating shaft 3 and can rotate with the rotating shaft 3 . Among them, the fixed points A, C, and the fixed points B, D are respectively symmetrical to the axis of the rotating shaft 3, and the fixed points B, D should be set at the arc obtained by crossing the spring tension axis and cutting the end face of the rotating shaft 3. The position of the centerline of the surface to obtain the output torque required for larger rotation adjustment.

[0023] Such as figure 1 As shown, in the figure a is the length of the spring when it is free, b is the stretc...

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Abstract

The invention provides a small-rotation-angle transmission device with a gap eliminating mechanism, which can be taken as a small-rotation-angle transmission system with a small rotation stroke, such as a declination axis. The small-rotation-angle transmission device comprises a transmission case and a rotating shaft, wherein the rotating shaft is externally provided with a shaft sleeve which is fixedly connected with the transmission case; a transmission shaft is provided with a pre-stretched spring; one end of the spring is fixed on the end face of the transmission shaft, and the other end of the spring is fixed on the shaft sleeve; when the rotating shaft rotates to any angle, rotating torque output from the spring is same. The small-rotation-angle transmission device provided by the invention adopts the spring to output the constant torque so as to implement transmission gap elimination, so that a motor and a drive circuit are omitted, the device cost and power consumption are saved, the motor is prevented from heating, and imaging quality is prevented form being reduced by thermal convection. The small-rotation-angle transmission device is simple in structure, reliable in performance, and not easy to be damaged.

Description

technical field [0001] The invention relates to mechanical transmission equipment, in particular to a small rotation angle transmission device with a backlash elimination mechanism for astronomical machinery. Background technique [0002] A solar telescope is an astronomical telescope dedicated to observing the sun. It often uses an equatorial frame and has two mechanical rotation axes of right ascension and declination. Because the movement range of the sun in the direction of declination is only 47 degrees, the rotation range of the solar telescope's declination axis only needs to be slightly larger than 47 degrees, and the general design is 48-55 degrees. The rotation of the solar telescope is driven by a motor. After being decelerated by the transmission system, it drives the right ascension axis and the declination axis to rotate. It usually adopts gear transmission, worm gear transmission and other transmission methods. However, no matter what kind of transmission mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/12
Inventor 胡企千朱庆生周小军张露
Owner NANJING ZHONGKE ASTROMOMICAL INSTR
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