Mechanism for unhitching and resetting worm wheel endless screw

A technology of worm gear and reset mechanism, which is applied in mechanical equipment, belts/chains/gears, portable lifting devices, etc.

Inactive Publication Date: 2012-06-13
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]The structure is complex, bulky and heavy, and it is not allowed to occupy a large installation space of the main instrument

Method used

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  • Mechanism for unhitching and resetting worm wheel endless screw
  • Mechanism for unhitching and resetting worm wheel endless screw
  • Mechanism for unhitching and resetting worm wheel endless screw

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Embodiment Construction

[0016] The invention according to figure 2 and image 3 The structure shown is implemented, and the material and technical requirements of the other parts: H62 is used for the hand twist 14; H62 is used for the limit cover 15; 45 steel is used for the cam 16; 65Mn is used for the radial top slide rail spring 17; GCr18 is used for the threaded top 18 Quenching treatment; steel ball 20 adopts GCr18, quenching hardness HRC 58~62; axial spring seat 21 adopts H62, worm axial spring 22 adopts 65Mn; slide rail sleeve 23 adopts H62; thrust ball bearing 24 adopts standard parts reformation; bearing The sleeve 25 adopts H62; the first radial ball bearing 26 adopts standard parts (this part may use self-aligning ball bearings); the worm 27 adopts 40Cr quenching and tempering treatment; the worm wheel 28 adopts tin bronze; Two radial ball bearings 30 adopt standard parts (this part or adopt self-aligning ball bearings); Guide rail 31 adopts H62; Limit screw 32 adopts 45 steel.

[0017]...

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Abstract

The invention relates to a worm gear-worm off-reset mechanism and belongs to a mechanism in the technical field of the machinery transmission. The invention solves the technical problem by providing a worm gear-worm off-reset mechanism. The technical scheme of the invention includes a position limiting cover, a cam, a spring for a radial top slide rail, a screw thread top, a spring for an axial top slide rail, a slide rail sleeve, a worm, a worm gear, etc. The slide rail sleeve is provided with a flanged shaft shoulder and a hollow shaft housing. The hollow shaft housing of the slide rail sleeve is penetrated in a hole of a housing to lead the inner side of the shaft shoulder and the outer wall of the housing, the outer side of the shaft shoulder and the position limiting cover, as well the two sides and a guide rail to be tightly contacted. The upper and lower parts of the housing corresponding to the flanged shaft shoulder are respectively provided with tow counterbores. The spring for the axial top slide rail is arranged in the counterbores. The counterbore in the lower part of the flanged shaft shoulder is provided with the spring for the radial top slide rail. The hollow shaft housing of the slide rail sleeve is provided with the screw thread top. The upward side of the position limiting cover is provided with a position limiting bolt. A shaft of the cam passes through the shaft hole of the position limiting cover and is fixedly connected with a handle button of the cam. The left end of the worm shaft is supported on the center of the screw thread top through a steel ball and the right end is connected with the housing through a bearing.

Description

technical field [0001] The invention belongs to a worm gear disengagement reset mechanism related to the technical field of mechanical transmission. Background technique [0002] In some occasions of the mechanical structure, the mechanical transmission adopts the worm gear transmission structure, which changes the transmission direction or transmission mechanism, reduces the volume of the transmission system, and so on. In some mechanical structures, according to the needs of transmission, sometimes it is necessary to disengage between the worm gear and worm, and then reset to perform normal operation. [0003] The closest existing technology with the present invention is a kind of worm and gear transmission mechanism designed by Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, such as figure 1 As shown, it includes a bracket assembly 1, a support shaft 2, a worm wheel 3, a worm 4, a worm bracket assembly 5, a tension spring 6, a cam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/22F16H57/039F16H57/021F16H57/023
Inventor 扈进宗
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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