CN2529011Y

CN2529011Y - Worm-gear worm propulsion unit

Info

Publication number: CN2529011Y
Application number: CN 02226301
Authority: CN
Inventors: 邹军; 郑泽钿
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-18
Filing date: 2002-03-18
Publication date: 2003-01-01
Anticipated expiration: 2012-03-18

Abstract

The utility model provides a worm-gear worm propulsion unit, which comprises a worm-gear (1) and a worm (2). A diameter of a diametral pitch circle of the worm (2) is infinite, and the diametral pitch circle has a section similar to a straight line. The worm (2) is the worm straightly stretched along the diametral pitch circle. The utility model converts the rotation into a straight propulsion motion by making use of matching between the stretched worm-gear and the worm, and has the advantages of reasonable designing, simple structure, high transmission efficiency and small frictional noise, and provides a new path for straight transmission motion, and greatly enhances the safety and steady performance of the equipment after the applying on hoisting and lifting equipment, simplifies the supporting control and mechanical mechanisms and reduces the comprehensive cost of the product.

Description

The worm and gear advancing means

The utility model relates to a kind of mechanical transmission, is a kind of mechanism that utilizes worm screw to be converted into the linear advancement motion specifically.

In the prior art, the worm and gear transmission mainly is motion and the power that is used to transmit between the alternating axis of space, as retarder, imports after the transmission of movement of worm-gears by the worm screw high speed rotating, convert the output that slowly runs of worm-wheel shaft to, high speed rotating is converted to the transferring power that slowly runs; Transmit straight-line device such as screw pair, rotate by screw mandrel and make the nut moving linearly, because what adopt between screw mandrel and the nut is that face contacts, friction is big, and transmission efficiency is low, and noise is big, and significant limitation is arranged in the use.As for the equipment that is used in lifting, lifting aspect, it generally all is rotation drive wire rope by Equipment Control self rotatable parts, and carry out lifting, lifting, as winch, elevator etc., because long-term easy fatigue break, the generation that causes the accident, Security, the less stable used of wire rope, supporting control system, mechanical mechanism complexity, the equipment price costliness.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and a kind of improved worm screw advancing means is provided, and the rotation of worm screw is converted to the linear advancement motion, reduces noise, improves Security and stability.

The purpose of this utility model can realize by following technical measures: this advancing means has worm screw, worm gear, worm gear footpath pitch diameter is infinitely great, one section near linear of its footpath pitch circle, worm gear is to launch the part of worm gear along footpath pitch circle straight line, worm screw cooperates with the expansion worm gear, and rotation is converted to straight line motion.The fixing worm gear that launches, when worm screw was rotated, worm screw moved as linear advancement along launching worm gear; Fixing worm screw, when worm screw is rotated, launch worm gear along worm shaft to moving as straight line.Actual more employing be that the expansion worm gear is fixed, connect power mechanism by worm screw, and be fixedly connected on bin, power mechanism drives worm screw and rotates, and makes bin along launching the worm gear moving linearly, thereby realizes that material transports transmission.

Concrete structure of the present utility model and embodiment are provided by following accompanying drawing.

Fig. 1 is the structural drawing of worm and gear advancing means.

The utility model is described in further detail below in conjunction with accompanying drawing: with reference to Fig. 1, this advancing means has worm screw [1], launches worm gear [2], launch the part that worm gear [2] is the infinitely-great worm gear of footpath pitch diameter, one section near linear of its footpath pitch circle, the shape approximation of one section expansion worm gear [2] is in straight line,, worm screw [1] cooperates with expansion worm gear [2], and rotation is converted to straight line motion.When launching worm gear [2] when being in stationary state, worm screw [1] is rotated, and worm screw [1] just does the linear advancement motion along launching worm gear [2]; When worm screw [1] when being in stationary state, worm screw [1] is rotated, and launches worm gear [2] and moves to straight line along worm shaft.This device can be applicable on lifting, the lifting means, as lift, elevator etc., preferably adopts the circulating ball worm screw on the type selecting of worm screw.

The utility model is reasonable in design, and is simple in structure, and utilization expansion worm gear cooperates with worm screw, rotation is converted to the linear advancement motion, the transmission efficiency height, frictional noise is little, manufactures easily, for the straight line transmitting movement provides new approach, it is used on lifting, lifting means, with improving the safety and the stability of equipment greatly, simplifies supporting control system and mechanical mechanism, reduce the overall cost of product, improve competitiveness of product.

Claims

1, a kind of worm and gear advancing means has worm screw [1], worm gear [2], it is characterized in that worm gear [2] footpath pitch diameter for infinitely great, and worm gear [2] is to launch the part of worm gear along footpath pitch circle straight line.