CN202545767U

CN202545767U - Worm-gear speed reducer

Info

Publication number: CN202545767U
Application number: CN2012200811760U
Authority: CN
Inventors: 江建斌; 江建敏
Original assignee: TAIZHOU SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Current assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO., LTD.
Priority date: 2012-03-06
Filing date: 2012-03-06
Publication date: 2012-11-21
Anticipated expiration: 2022-03-06

Abstract

A worm-gear speed reducer comprises a box, a worm, a worm gear and an output shaft, wherein the worm gear is sleeved on the output shaft and is meshed with the worm, two ends of the worm are fixed on the box through a first bearing and a second bearing, and worm gear oil seals are arranged between one end of the worm gear and the box as well as between the other end of the worm gear and an end cover of the worm gear respectively. The center of the worm gear is penetratingly connected with the output shaft, and the worm gear is meshed with the worm which is fixed on the box through the deep groove ball bearings, so that drive stability is achieved, and noise is low. The worm-gear speed reducer can be operated for a long term under various working environments by the aid of a sealed cavity formed by an upper cover plate and a lower cover plate, and is simple in structure and quite practical.

Description

Worm-gear speed reducer

Technical field

The utility model relates to the speed reducer field, is worm-gear speed reducer specifically.

Background technique

Worm-gear speed reducer is that a kind of power is passed on mechanism, utilizes the velocity transducer of gear, the winding number of motor is decelerated to desired winding number, and obtain the mechanism of big torque.Be used for the mechanism of transferring power and motion at present, the application area of speed reducer is quite extensive.

Existing worm-gear speed reducer, when in use, transmission is steady inadequately, noise is bigger, can not well adapt to long-term work under rugged environment.

Therefore, need worm-gear speed reducer especially, to solve the problem that exists in the existing technology.

The model utility content

The purpose of the utility model is to provide worm-gear speed reducer, and to the defective that existing technology exists, stable drive, noise be little, can adapt to various working environments, and be simple in structure, very practical.

To achieve these goals, the technological scheme of the utility model is following:

Worm-gear speed reducer; Comprise casing, worm screw, worm gear and output shaft; It is characterized in that: the inside cross-under output shaft of said worm gear; On casing, the two ends of said worm gear are provided with the worm gear oil sealing respectively and between the casing, worm gear end cap through clutch shaft bearing and second bearing fixing for said wormgear engaging worm, said worm screw two ends.

In the utility model, said casing comprises upper cover plate and lower cover plate, and said upper cover plate and lower cover plate form a hermetic cavity body, and said worm screw, worm gear and output shaft are arranged on inside cavity, and the part of said worm screw is stretched out outside the cavity

In the utility model, said worm screw stretches out cavity and the casing position contacting is provided with the input oil sealing.

In the utility model, the said clutch shaft bearing and second bearing are through being bolted on the casing.

In the utility model, the said clutch shaft bearing and second bearing are deep groove ball bearing.

The worm-gear speed reducer of the utility model is compared with existing product, worm gear center cross-under output shaft; Wormgear engaging worm, worm screw is fixed on the casing through deep groove ball bearing, has reached stable drive; The effect that noise is little forms a hermetic cavity body through upper cover plate and lower cover plate, has realized the long-term work of worm-gear speed reducer under various working environments; Simple in structure, very practical.

The characteristics of the utility model can consult this case graphic and below better mode of execution detailed description and obtain to be well understood to.

Description of drawings

Fig. 1 is the structural representation of a kind of horizontal-type biaxial numerically controlled lathe of the utility model.

Fig. 2 is the left view of the utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, further set forth the utility model below in conjunction with specific embodiment.

Worm-gear speed reducer; Thereby comprise passive casing 100, be used for transmitting the worm screw 200 of input power, worm gear 300 and the output shaft 400 that a cup worm screw driven rotary drives the output shaft motion; The inside cross-under output shaft 400 of worm gear 300; Worm gear 300 engages worm 200; Worm screw 200 two ends are fixed on the casing 100 through passive clutch shaft bearing 210 and passive second bearing 220, and the two ends of worm gear 200 are provided with the worm gear oil sealing that prevents oil seepage respectively and between the casing 100, worm gear end cap 500.

Casing 100 comprises the upper cover plate 110 and lower cover plate 120 that seals, and upper cover plate 110 forms a hermetic cavity body with lower cover plate 120, and worm screw 200, worm gear 300 and output shaft 400 are arranged on inside cavity, and the part of worm screw 200 is stretched out outside the cavity.

Worm screw 200 stretches out cavity and casing 100 position contacting are provided with the input oil sealing 230 that prevents oil seepage.

The clutch shaft bearing 210 and second bearing 220 are through being bolted on the casing 100.

The clutch shaft bearing 210 and second bearing 220 are deep groove ball bearing, have reached to bear the effect of larger axis to load.

Worm gear 300 inner cross-under output shafts 400 when in use; The two ends of worm screw 200 are fixed on the clutch shaft bearing 210 and second bearing 220, and worm gear 300 is meshing with each other with worm screw 200, when driving force drives the worm screw rotation; Also drive the rotation of worm gear and the rotation of output shaft 400 simultaneously; The size that is used for transfer speed, upper cover plate 110 forms a hermetic cavity body with lower cover plate 120, has reached the requirement of continuous operation under varying environment.

The worm-gear speed reducer of the utility model is compared with existing product, worm gear 300 center cross-under output shafts 400; Worm gear 300 engages worm 200, worm screw 200 is fixed on the casing 100 through deep groove ball bearing, has reached stable drive; The effect that noise is little forms a hermetic cavity body through upper cover plate 110 and lower cover plate 120, has realized the long-term work of worm-gear speed reducer under various working environments; Simple in structure, very practical.

More than show and described the advantage of basic principle, major character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The just principle of describing in the foregoing description and the specification of the utility model; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the scope of the utility model that requires protection.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.

Claims

1. worm-gear speed reducer; Comprise casing, worm screw, worm gear and output shaft; It is characterized in that: said worm gear set is located on the output shaft; On casing, the two ends of said worm gear are provided with the worm gear oil sealing respectively and between the casing, worm gear end cap through clutch shaft bearing and second bearing fixing for said wormgear engaging worm, said worm screw two ends.

2. worm-gear speed reducer according to claim 1; Said casing comprises upper cover plate and lower cover plate; Said upper cover plate and lower cover plate form a hermetic cavity body, and said worm screw, worm gear and output shaft are arranged on inside cavity, and the part of said worm screw is stretched out outside the cavity.

3. worm-gear speed reducer according to claim 2 is characterized in that: said worm screw stretches out cavity and the casing position contacting is provided with the input oil sealing.

4. worm-gear speed reducer according to claim 1 is characterized in that: the said clutch shaft bearing and second bearing are through being bolted on the casing.

5. worm-gear speed reducer according to claim 1 is characterized in that: the said clutch shaft bearing and second bearing are deep groove ball bearing.