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Self locking type worm gear-worm screw-threaded shaft elevator

A screw lifter and worm gear technology, applied in the field of lifts, can solve the problems of poor self-locking capacity and low load-bearing capacity, and achieve the effect of reasonable structure, strong load-bearing capacity, and good self-locking effect

Inactive Publication Date: 2009-01-07
JIANGSU TAILONG MACHINERY GRP CO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of poor self-locking ability and low bearing capacity caused by the easy axial displacement of the lead screw in the prior art, and to provide a reasonable structure, difficult axial deviation of the lead screw and strong load capacity, so that Self-locking worm gear screw lift with high processing precision

Method used

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  • Self locking type worm gear-worm screw-threaded shaft elevator

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] figure 1 A self-locking worm gear screw lift shown, including a worm 1, a worm wheel 2, a nut, a lead screw 5, and a drum-shaped tooth 6, the worm 1 meshes with the worm wheel 2, and the worm wheel 2 meshes with the nut through the drum-shaped tooth 6, The nut is screwed with the lead screw. The nut is a double nut structure, including the nut concave part 3 and the nut convex part 4 that are screwed together. The screwed part of the nut concave part and the nut convex part is smooth connection or threaded connection or such as figure 1 In the connection structure of the combination of smooth surface and screw thread shown, the screwed part of the nut concave part and the nut convex part is riveted by the stop screw 7, and the recessed depth of the nut concave part is greater than the protruding height of the nut convex part.

[0017] In the design of the worm ...

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Abstract

The invention provides a self-locking type worm gear screw rod lifter which comprises a worm, a worm wheel, a nut, a screw rod and crowned teeth. The nut adopts an integrated structure of a concave nut piece and a convex nut piece which are screwed mutually; the clearance between the nut and the screw rod is small; the screwing of the concave nut piece and the convex nut piece combines smooth surface positioning connection with threaded connection, thereby ensuring the screwing precision of double nut; the concave depth of the concave nut piece is larger than the convex height of the convex nut piece, thereby reserving adjustment space, and being favorable for adjusting the clearance between the nut and the screw rod; a worm gear pair adopts the double enveloping teeth shape, the number of enveloping teeth is large, the contact surface is large, the bearing capacity is high and the self-locking property is better. The self-locking type worm gear screw rod lifter has the advantages of reasonable structure, stable work, high load capacity, good self-locking effect under the condition of bearing vibration load, less possibility of axial excursion of the screw rod, reduced error and improved product processing precision.

Description

technical field [0001] The invention relates to a lifter, in particular to a worm wheel screw screw lifter capable of self-locking under vibration load. Background technique [0002] Lifts are widely used in metallurgy, construction, chemical industry, water conservancy, mining, aerospace and other industries, especially worm gear screw lifts used in metallurgy, chemical industry, aerospace and other fields, which can only have self-locking properties for non-vibrating loads. However, self-locking cannot be implemented for loads with vibration frequencies. When the top of the screw is under load during use, the screw will deviate in the axial direction. Once the deviation occurs, it cannot meet the requirements of high precision and good quality stability. Processing needs, for example: the elevator used in the crystallizer width adjustment device in the metallurgical industry, if the lead screw is offset in the axial direction, it will affect the width of the steel plate, t...

Claims

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Application Information

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IPC IPC(8): B66F3/18
Inventor 孔霞陈新志李素珍
Owner JIANGSU TAILONG MACHINERY GRP CO CO LTD
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