CN2246731Y

CN2246731Y - Structure-improved worm reducer

Info

Publication number: CN2246731Y
Application number: CN 95224042
Authority: CN
Inventors: 邱福田; 黄德煌
Original assignee: 邱福田; 黄德煌
Current assignee: Taiwan Sanlong Limited by Share Ltd
Priority date: 1995-10-20
Filing date: 1995-10-20
Publication date: 1997-02-05
Anticipated expiration: 2005-10-20

Abstract

The utility model relates to a structure-improved worm reducer, which comprises a body, a boosting shaft, an output shaft and two end covers. The utility model is characterized in that a blocking part is pushed by the front end of the boosting shaft, and another blocking part is pushed by the back end of an adjusting plate; thus, a fixing plate can be pushed by the rotation of the adjusting plate; so the gap between the adjusting plate and the fixing plate is enlarged, and the boosting shaft is pushed by the fixing plate which is forced; the meshing between the worm of the boosting shaft and the worm wheel of the output shaft is adjusted by the movement of the boosting shaft; the noise and the frictional heat caused by the meshing deviation of the worm and the worm wheel can be eliminated.

Description

Structurally improved worm reduction gear

The utility model relates to a kind of worm gear reducer device, refers to that especially a kind of assembly promptly easily goes out the precision of worm and wheel engagement, the noise that causes to reduce accuracy error and the structurally improved worm reduction gear of frictional heat.

The worm reduction gear of generally commonly using, be to be meshing with each other and to produce the power take-off that underspeeds with worm screw and worm gear, but in use, this speed reducer can produce sizable heat, and send irritating noise, and heat and generating noise can cause the reduction of efficient, and the Lubricants that needs to use the body of larger volume and pour into a large amount of cooling usefulness in body, and need radiating fin be set to increase the heat extraction effect in the body outer rim.

Why produce above-mentioned problem, be because existing speed reducer problem occurred at the engagement fit on of worm and worm gear, see also Fig. 1, all be with after adding mechanical axis 2 worm screw front end and back end fit bearings 21 when in factory, assembling, put the afterburning axis hole 11 of body 1 again into, in 12, front end is selected suitable thickness asbestos washer 41 for use and is cooperated a preceding afterburning lid 4 to support the bearing 21 of compeling to add mechanical axis 2 front ends then, also select suitable thickness asbestos washer 51 for use in the rear end, cover to the bearing 21 of compeling to add mechanical axis 2 rear ends with the afterburning lid 5 in a back again, in the hope of using asbestos washer 41, the crowded adding of 51 thickness axle 2 moves and reaches and add mechanical axis 2 and mesh accurately with force-output shaft 3.But, the worm reduction gear that assembling is finished in the factory in use for some time, when keeping in repair as need, need forward and backward afterburning lid 4,5 is pulled down so that overhaul renewal part, when but maintenance well reconfigures again, the maintenance man does not but have the thickness that equipment and enough experiences select for use new asbestos washer 41,51 to reach when dispatching from the factory originally, so causes the engagement deviation that adds mechanical axis 2 and force-output shaft 3, this speed reducer is made a noise and produces heat.

Main purpose of the present utility model is to provide in order to address the above problem a kind of structurally improved worm reduction gear, only need accurately to control the build-up tolerance between worm screw and body, cooperate to adjust and support the regulator plate and the fixed plate of compeling, just the precision that worm and wheel meshes be can easily and proofread and correct out accurately, the heat and the noise that cause inadequately because of precision eliminated.

Secondary objective of the present utility model is to dwindle the volume of worm reduction gear, and can save Lubricants and outside radiating fin greatly.

For this reason, the utility model is taked following technological scheme:

A kind of structurally improved worm reduction gear comprises:

One body has an afterburning axis hole that connects its opposite side-edge, and another be located at afterburning axis hole axis below and with the axis hole of exerting oneself of afterburning axis hole axis normal, and the end cap that the afterburning axis hole branch at body two ends is cut to pieces with leakproof covers;

One adds mechanical axis, is the afterburning axis hole that a worm screw and fitted bearing are inserted in described body;

One force-output shaft, be one with add the worm gear of mechanical axis worm meshing and the axis hole of exerting oneself that fitted bearing is inserted in body;

Two end caps are the afterburning axis holes that are covered on body two opposite side-edges,

It is characterized in that, described mechanical axis one end cover unification bearing and the stop part in the afterburning axis hole of compeling body one side of adding, add another bearing of mechanical axis the other end fit and support to compel the outer shroud of this bearing with a fixed plate, screw with a regulator plate supports urgent fixed plate again, this screw spiral shell is established a nut, and regulator plate is subjected to an interior stop part of afterburning axis hole that is fixed on opposite side-edge to support urgent.

The utility model one preferred embodiment conjunction with figs. is described in detail as follows:

Fig. 1 is for commonly using worm reduction gear stereochemical structure decomposing schematic representation;

Fig. 2 is the utility model embodiment's a elevation cross-sectional view;

Fig. 3 is the utility model embodiment's a side cutaway view;

Fig. 4 is the A partial section view of Fig. 2;

Fig. 5 is the utility model embodiment's a part-structure perspective exploded view;

Fig. 6 is the utility model embodiment's a three-dimensional schematic representation.

See also Fig. 2-6, present embodiment comprises: a body 1, adds main members such as a mechanical axis 2 and a force-output shaft 3.

This body 1 includes the afterburning axis hole 11 of its opposite side-edge of perforation, 12, and another is located at

afterburning axis hole

11,12 axis below and the perpendicular axis hole 13 of exerting oneself, this adds mechanical axis 2 is a worm screw and front end sleeve unification bearing 21A, this bearing 21A outer shroud is supported under the pressure of the stop part in the afterburning axis hole 11 of body one side, the stop part of present embodiment is that a C shape clasp 14 is limited on the annular groove 111 in this reinforcing axis hole 11, force-output shaft 3 be one with add the worm gear of mechanical axis 2 worm meshings and the axis hole 13 of exerting oneself that fitted bearing 31 is sleeved on body, and this adds mechanical axis 2 rear end fit another bearing 21B and supports the outer shroud of compeling this bearing 21B with a fixed plate 23, support with the screw on a regulator plate 24 axis 25 again and compel fixed plate, these screw 25 spiral shells are established a nut 26, and regulator plate 24 is subjected to another stop part that is located in the afterburning axis hole 12 to support urgent again, another stop part of present embodiment is that a C shape clasp 15 is limited on the annular groove 121 in this reinforcing axis hole 12, afterwards, the afterburning axis hole 11 at body 1 two ends, 12 cover with the end cap of leakproof respectively again, and the end cap of present embodiment is an oil sealing 27,28.

By above-mentioned structure, the utility model only needs accurately control to add the machining tolerance of mechanical axis 2 worm spiral center lines to body 1 afterburning axis hole 11 inner grooves 111 during fabrication, and exert oneself axis hole 13 axis and the linarity that adds mechanical axis 2 spiral center lines, can assemble.

During assembling, force-output shaft 3 two ends elder generations fit bearing 31 is fixed on body and exerts oneself on the axis hole 13, then, to add mechanical axis 2 front ends and rear end fit bearing 21A respectively, 21B, penetrate to another afterburning axis hole 11 from body 1 one afterburning axis holes 12, the C shape clasp 14 of on afterburning axis hole 11 inner grooves 111, packing into again, the bearing 21A outer shroud that adds mechanical axis 2 front ends in order to block, prevent to move forward, support urgent with a fixed plate 23 again at the bearing 21B of rear end outer shroud, support with the screw on a regulator plate 24 axis 25 again and compel fixed plate 23, be limited to afterburning axis hole 12 inner grooves 121 with a C shape clasp 15 more afterwards and compel this regulator plate 24 to support.At this moment, screw 25 on rotation regulator plate 24 axis, utilizing screw 25 the other ends to support urgent fixed plate 23 slowly moves, gradually force and add mechanical axis 2 it is moved to afterburning axis hole 11 directions, rotate to and add mechanical axis 2 and block in the time of to rotate with force-output shaft 3, gradually oppositely unscrew screw 25 again, at this moment, adding mechanical axis 2 can rotate with force-output shaft 3 beginnings, to unscrew to needs add the mechanical axis 2 and force-output shaft 3 accuracies of mesh, promptly add mechanical axis 2 and rotate smooth-going with force-output shaft 3 and noise free when producing, use a hold-doun nut 26 locking screws 25 again, prevent screw 25 from being shaken and become flexible, can finish the work of assembling.

The utility model is because step bearing 21A supports a urgent C shape clasp 14 before adding mechanical axis 2, and urgent another C shape clasp 15 is supported in regulator plate 24 rear ends, like this, can force fixed plate 23 by screw 25 rotations of regulator plate 24, and fixed plate 23 is moved forward and with the gap enlargement of regulator plate 24, and force fixed plate 23 promotion bearing 21B to move forward, move forward to compeling to add mechanical axis 2 again, can adjust the accuracy of mesh that adds mechanical axis 2 worm screws and force-output shaft 3 worm gears by adding moving of mechanical axis 2, eliminate noise and frictional heat because of the engagement deviation generation of worm screw and worm gear.Because frictional heat has reduced, body 1 inner space then can reduce, so the volume of body 1 can dwindle.

The utility model is limited to 11,12 of the afterburning axis holes of body 1 two sides with two

C shape clasps

14,15 all respectively because add bearing 21A, the 21B of mechanical axis 2 front and back ends, do not commonly use the forward and backward afterburning lid 4,5 of worm reduction gear to support bearing 21A, the 21B that compels to add mechanical axis 2 front and back ends respectively and have, and the problem of strength is born in existence, so end cap of the present utility model can make oil sealing 27,28 need not bear strength, just can reach the purpose of leakproof.

The utility model has many embodiments, only is the difference on the details therebetween.For example, above-mentioned end cap can also adopt the lid of the O shape ring with grease proofing effect to substitute.

Claims

1, a kind of structurally improved worm reduction gear comprises:

One body has an afterburning axis hole that connects its opposite side-edge, and another be located at afterburning axis hole axis below and with the axis hole of exerting oneself of afterburning axis hole axis normal, and the afterburning axis hole at body two ends covers with the end cap of leakproof respectively;

2, structurally improved worm reduction gear according to claim 1 is characterized in that described stop part is that C shape clasp is limited on the interior annular groove of described afterburning axis hole.

3, structurally improved worm reduction gear according to claim 1 is characterized in that described end cap is an oil sealing.