CN209839071U

CN209839071U - Large-torque low-speed reducer

Info

Publication number: CN209839071U
Application number: CN201821424281.3U
Authority: CN
Inventors: 甯稿饯; 常彤
Original assignee: Scorpio Building Equipment Ltd Wuhan
Current assignee: Scorpio Building Equipment Ltd Wuhan
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-12-24
Anticipated expiration: 2028-08-31

Abstract

The utility model discloses a large-torque low-speed reducer, which comprises a driving motor and a speed reducing mechanism which are fixedly connected through an input end flange, wherein a worm gear speed reducing device and a secondary gear speed reducing device are arranged in a speed reducing box body of the speed reducing mechanism; the worm and gear speed reducer comprises a worm gear and a worm which are meshed with each other, and the worm is connected with an output shaft of the driving motor; the secondary gear reduction device comprises a worm gear shaft, a duplicate gear, a fixing plate and an output gear, wherein the worm gear is connected with the worm gear shaft through a key; the secondary gear reduction device adopts a plurality of duplicate gears for speed reduction, the duplicate gears are symmetrically arranged on a fixed plate, and the fixed plate is connected with a cover plate of the reduction box body through a pin shaft. The utility model discloses a driving motor carries out primary speed reduction through worm gear decelerator, carries out the second grade through second grade gear decelerator and slows down to obtain lower rotational speed and great moment of torsion, have compact structure, small in size, light in weight, use advantages such as nimble and safe and reliable.

Description

Large-torque low-speed reducer

Technical Field

The utility model relates to a small-size motor, in particular to big moment of torsion low-speed reducer.

Background

In a low factory building or a place where a lifting hook is not allowed to have horizontal displacement in the lifting process (such as a workshop, a factory building, a warehouse, a wharf, a construction site, a department store company, a restaurant, a hospital and the like), a motor is usually used for carrying heavy objects to drive a chain wheel mechanism to form simple lifting equipment, the motor is required to be provided with a speed reducing device for reducing the speed, an electric hoist is usually adopted, a disc motor is used for the electric hoist, three times of working current is required when the disc motor is started, the disc motor is easy to feed water, and is easy to damage, troublesome to maintain and short in service life. However, the conventional speed reducer in the market is usually large in size and is not suitable for being used in such places.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a big moment of torsion low-speed reducer is provided, compact structure, small in size to overcome not enough among the prior art.

The technical scheme of the utility model: the utility model provides a big moment of torsion low-speed reducer, it includes driving motor and reduction gears through input end flange fixed connection, its characterized in that: a reduction box input end flange of the speed reducer structure and the box body are integrally cast into a whole, and a reduction box output end flange is arranged in the reduction box; a worm and gear speed reducer and a secondary gear speed reducer are arranged in a reduction box body of the speed reducing mechanism; the worm and gear speed reducer comprises a worm wheel and a worm which are meshed with each other, and the worm is connected with an output shaft of the driving motor; the secondary gear reduction device comprises a worm wheel shaft, a duplicate gear, a fixed plate and an output gear, wherein the worm wheel is connected with the worm wheel shaft through a key; the secondary gear reduction device adopts a plurality of duplicate gears for reducing speed, the duplicate gears are symmetrically arranged on a fixed plate, and the fixed plate is connected with a cover plate of the reduction box body through a pin shaft; and a rubber gasket is arranged between the reduction box body and the reduction box cover plate.

Preferably, the reduction box body is provided with a boss for limiting the fixing plate.

Compared with the prior art, the utility model discloses a driving motor carries out elementary speed reduction through worm gear decelerator, carries out the second grade through planet decelerator and slows down to obtain lower speed and great moment of torsion, have compact structure, small in size, light in weight, use advantages such as nimble and safe and reliable.

Drawings

The reference numerals are explained below: 1-driving a motor; 2-a speed reduction mechanism; 21-reduction box body; 22-a worm; 23-a worm gear; 24-a worm gear shaft; 25-an output gear; 26-duplicate gear; 27-a fixing plate; 28-reducer cover plate;

fig. 1 is a schematic structural diagram of a low-speed reducer of the present invention;

fig. 2 is a sectional view of a reduction mechanism relating to the low-speed reducer of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, which are illustrative only and not limiting, and the scope of the present invention should not be limited thereby.

Like fig. 1-2, the utility model provides a big moment of torsion hangs down commentaries on classics speed reducer, the gear box body 21 and the flange integrated casting shaping of reduction gears 2, driving motor 1 adopt the low power motor commonly used, with the flange fixed connection of bolt and gear box body 21. A worm and gear speed reducer and a secondary gear speed reducer are arranged in the reduction box body 21, and a boss structure is arranged in the reduction box body 21; the worm and gear speed reducer comprises a worm wheel 23 and a worm 22 which are meshed with each other, and the worm 22 is directly connected with an output shaft of the driving motor 1 through a flat key; the two-stage speed reducer comprises a worm gear shaft 24, a duplicate gear 26, a fixing plate 27 and an output gear 25, wherein the worm gear 23 is connected with the worm gear shaft 24 through a key; the duplicate gears 26 are symmetrically arranged on the fixing plate 27 respectively, the fixing plate 27 is connected with the reducer cover plate 28 through a pin shaft, a boss structure is arranged on the inner side of the output end of the reducer box body 21, namely, a flange at the output end of the reducer box body 21 is arranged in a built-in mode, and the reducer cover plate 28 and the reducer box body 21 are fixed through bolts and are sealed through rubber gaskets arranged between the reducer cover plate 28 and the reducer box body 21.

The utility model discloses a theory of operation: the worm 22 is driven to rotate by the driving motor 1, the worm 22 drives the worm wheel 23 to rotate, because the worm wheel is connected with a worm wheel shaft 24 of the second-level speed reducing mechanism through a key, the worm wheel shaft 24 is driven to rotate by the worm wheel 23, the worm wheel shaft 24 is meshed with a duplicate gear 26, the worm wheel shaft 24 rotates, the duplicate gear 26 is driven to rotate through tooth meshing transmission, the duplicate gear 26 is meshed with the output gear 25 through teeth, the output gear 25 rotates under the driving of the duplicate gear 26, through multi-level speed reduction, the driving motor can obtain a higher speed reducing ratio, the characteristic of the speed reducer is known, the larger the speed reducing ratio is, the larger the obtained torque is, the purpose of large torque and low speed is finally achieved, the common driving motor is adopted, and the.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. The utility model provides a big moment of torsion low-speed reducer, it includes driving motor and reduction gears through input end flange fixed connection, its characterized in that: the reduction box input end flange of the reduction box structure and the box body are integrally cast into a whole, and the reduction box output end flange is internally arranged; a worm and gear speed reducer and a secondary gear speed reducer are arranged in a reduction box body of the speed reducing mechanism; the worm and gear speed reducer comprises a worm wheel and a worm which are meshed with each other, and the worm is connected with an output shaft of the driving motor; the secondary gear reduction device comprises a worm wheel shaft, a duplicate gear, a fixed plate and an output gear, wherein the worm wheel is connected with the worm wheel shaft through a key; the secondary gear reduction device adopts a plurality of duplicate gears for reducing speed, the duplicate gears are symmetrically arranged on a fixed plate, the fixed plate is connected with a cover plate of the reduction box body through a pin shaft, and the fixed plate is arranged on a boss of the reduction box body; and a rubber gasket is arranged between the reduction box body and the reduction box cover plate.

2. The large-torque low-speed reducer according to claim 1, wherein: the reduction box body is provided with a boss of a limiting fixing plate, and a fixing pin hole is formed in the boss.