CN205371485U - Poor tooth -like derailleur of planet - Google Patents

Abstract

The utility model discloses a poor tooth -like derailleur of planet, including input shaft, star frame, two at least planetary gear, fixed ring gear, transmission ring gear, fixed disk and output shaft, the one end and the star frame of input shaft are connected, and planetary gear establishes on the star frame, and planetary gear's anterior segment part meshes with fixed ring gear mutually, the transmission ring gear is fixed on the fixed disk, and the fixed disk is fixed on the output shaft, the number of teeth of fixing ring gear and transmission ring gear is inequality, and the input shaft drives the rotation of star frame, and the planetary gear who follows the removal of star frame rotates along fixed ring gear, and planetary gear's back end part drives the transmission ring gear and rotates, and the transmission ring gear passes through fixed disk drive output shaft and rotates. It is specifically efficient, and the performance is good, consumes to hang down small, with low costs characteristics.

Description

Planet difference tooth clutches

Technical field

This utility model relates to a kind of variator, specifically a kind of planetary transmission.

Background technology

Variator industry is equipping one of industry based on China, this has benefited from the attention to machine-building of industrialization, urbanization and country and is rapidly developed.The various types of high-accuracy variator of domestic enterprise's independent research these years is equipped the exhibition Shang Yu world Higher-end machines people instrument that slows down in the gear drive of the world, Shanghai and is raced on the same stage.This is China's important breakthrough in industry variable-speed motor field.It, as drive apparatus requisite in modernization construction, is used in all trades and professions.

Variable-speed motors all types of at present is mainly to slow down as major function, and the general reductor of domestic use substantially can be divided into five classes, and they also all also exist respective pluses and minuses in actual applications.1, gear reduction unit is the class reductor that number of applications is maximum, it includes cylindrical gear reducer, conical gear reducer and circular cone--the various ways such as cylindrical gear reducer, but in fact, in industry, the product system of this kind of type products has been essentially all and has been dominated by offshore company, so obviously growth and the development of domestic reductor enterprise it are unfavorable for, and easily sent out the dispute of product property right, restriction for various reasons, although domestic Duo Jia mechanism makes great efforts to appeal, but being in progress always undesirable, prospect is still uncertain.Gear reduction unit manufactures and designs on block combiner system basis simultaneously, has profuse motor combination, installation form and organization plan, because installation form is various, also cumbersome generally for installation；2, planet-gear speed reducer is to apply also commonplace transmission product in the market, due to the series of advantages that its drive technology has self, it has been also due to the fast development since China's industry in recent years simultaneously, Planetary Gear Transmission technology is quickly grown at home, the load of product has also reached unprecedented level, and the technical performance of product also basically reaches the level of same kind of products at abroad.But the gear of planet-gear speed reducer not in same in the heart, so when load and moment of torsion are more big, to the abrasion of gear, also more and more volume is big, and other reductor relatively, planetary reducer structure comparison is compact, and revolution gap is little, precision comparison is high, service life is also long, and nominal torque output can be made very big, so its price is much more expensive；3, worm type of reduction gearing be mainly characterized by there is reverse self-locking function, can there is bigger deceleration ratio, and its input and output shaft be not with on an axis, also not in approximately the same plane, the volume making it is general all relatively larger, and efficiency and precision are not high in transmission, afterwards for the trend of industrial robot increasingly microminiaturization does not have obvious advantage in various industry.4, cycloidal planetary gear speed reducer is mainly used in the large speed ratio transmission of middle low power, and owing to properties of product gap compared with abroad is not little, cycloidal planetary gear speed reducer produces fewer and feweri in recent years, and many producers have stopped production this series products, then produces other type of product.Clearly to make it be close to superseded for the multiple performance issue of cycloidal planetary gear speed reducer, and realizing the performance boost of product and upgrading of regenerating as early as possible is also that this reductor is sought upgrading and do not caned also not challengeable selection；5, the gear ratio of harmonic drive is big, and not only bearing capacity is high for it, and transmission accuracy is high, and efficiency is high.But its shortcoming is also obvious, the flexbile gear of harmonic drive periodically deforms, thus produces alternate stress, so as to easily produce endurance failure.And the moment of its rotary inertia and startup is relatively big, is not suitable for for above low power tracking transmission, in speed, harmonic wave speed reducing machine can not be used for the gear ratio occasion less than 35.If adopting the harmonic drive of roller wave producer, its instantaneous transmission ratio is not constant and also has the problems such as radiating condition difference, is not suitable for being applied to the occasion of longevity of service；6, the numerous types of all kinds of mixed drive casees, substantially series special or nonstandard product, such as wind-force and hydroelectric generation gearbox, Li Mo bamboo uni-drive gear box, large-scale extruder gearbox etc..Along with domestic economy developing rapidly in recent years, the exploitation of mixed drive case and manufacturing all is rapidly developed, Product Level with abroad compare also substantially suitable.Although the development along with all trades and professions technology, the exploitation of such change speed gear box has very big development space with application, but it develops on the basis of above all kinds of transmission machinery and is nowhere near, the most basic or ceaselessly to improve moment, wear and tear, the technical problem such as degree of enduring hardships, be satisfied the requirement of industrial development.

Utility model content

It is high that the purpose of this utility model is to provide a kind of efficiency, and performance is good, consumes low, and volume is little, the planet difference tooth clutches that cost is low.

For achieving the above object, this utility model be the technical scheme is that

Planet difference tooth clutches, including power shaft, starframe, at least two planetary gear, fixing ring gear, transmission ring gear, fixed disk and output shaft, one end of power shaft is connected with starframe, planetary gear is located on starframe, planetary front section is meshed with fixing ring gear, described transmission ring gear is fixed on fixed disk, fixed disk is fixed on output shaft, the number of teeth of described fixing ring gear and transmission ring gear differs, power shaft drives starframe to rotate, follow the planetary gear that starframe moves to rotate along fixing ring gear, planetary hindfoot portion drives transmission ring gear to rotate, transmission ring gear drives output shaft rotation by fixed disk.

Further, described planetary gear is straight-tooth gear.

The beneficial effects of the utility model:

The gear of this variator inside is all rotate in the way of coaxial, so can reduce the radial force of tooth and between cog, thus reducing mechanical wear, improves the service life of gear；

Owing to adopting the version of above-mentioned poor tooth, the propulsion mode of tooth angle difference greatly strengthen the driving torque of variator, just can realize heavy load work with small-sized motor when certain gear combination, motor even can be embedded into synthesis volume in the middle of variator less, the integrated variator that load is bigger, this will cost savings production material and work space, have efficiency height, the advantage that volume is little and cost is low；

Owing to adopting the version of above-mentioned poor tooth, the heat dissipation problem allowing variator is readily solved, because its mechanical wear relatively reduces many, in operation, between part, heat produced by phase mutual friction falls sharply much naturally, the output rating of power also has greatly improved naturally, having efficiency height, performance is good, consumes low feature；

The structure of this variator decreases the loaded down with trivial details of the operation such as processing and maintenance renewal part, brings more convenience for user is practical with maintenance, and it has significantly high economic benefit and social benefit, is beneficial to and popularizes, and is beneficial to industrial development.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail:

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the sectional view along A A line shown in Fig. 1.

In figure: 1, power shaft；2, starframe；3, planetary gear；4, fixing ring gear；5, transmission ring gear；6, fixed disk；7, output shaft；8, planetary front section；9, planetary hindfoot portion.

Detailed description of the invention

Such as Fig. 1, shown in 2, planet difference tooth clutches, including power shaft 1, starframe 2, at least two planetary gear 3, fixing ring gear 4, transmission ring gear 5, fixed disk 6 and output shaft 7, one end of power shaft 1 is connected with starframe 2, planetary gear 3 is located on starframe 2, planetary front section 8 is meshed with fixing ring gear 4, described transmission ring gear 5 is fixed on fixed disk 6, fixed disk 6 is fixed on output shaft 7, the number of teeth of described fixing ring gear 4 and transmission ring gear 5 differs, power shaft 1 drives starframe 2 to rotate, follow the planetary gear 3 that starframe 2 moves to rotate along fixing ring gear 4, planetary hindfoot portion 9 drives transmission ring gear 5 to rotate, transmission ring gear 5 drives output shaft 7 to rotate by fixed disk 6.Described planetary gear 3 is straight-tooth gear.

Owing to the number of teeth of fixing ring gear and transmission ring gear is different, so having certain differential seat angle between fixing ring gear and transmission ring gear other tooth adjacent with two teeth that planetary gear is engaged, and the differential seat angle of fixing ring gear and transmission ring gear corresponding teeth will necessarily be utilized to be engaged when planetary gear rotates forward, so that the differential seat angle fixing ring gear next the group tooth corresponding with transmission ring gear is passively that zero formation synchronizes.Because fixing ring gear is fixed, so being passively while zero at the differential seat angle of tooth group, transmission ring gear is inevitable also follows planetary rotation to rotate, but owing to fixing ring gear and transmission ring gear have the difference of the number of teeth, so the angular velocity of the angular velocity of transmission ring gear rotation and planetary gear rotation is unequal, thus having reached the effect of speed change.

The above is preferred implementation of the present utility model; certainly the interest field of this utility model can not be limited with this; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or equivalent replacement, without departure from the protection domain of technical solutions of the utility model.

Claims (2)

1. a planet difference tooth clutches, it is characterized in that: include power shaft, starframe, at least two planetary gear, fixing ring gear, transmission ring gear, fixed disk and output shaft, one end of power shaft is connected with starframe, planetary gear is located on starframe, planetary front section is meshed with fixing ring gear, described transmission ring gear is fixed on fixed disk, fixed disk is fixed on output shaft, the number of teeth of described fixing ring gear and transmission ring gear differs, power shaft drives starframe to rotate, follow the planetary gear that starframe moves to rotate along fixing ring gear, planetary hindfoot portion drives transmission ring gear to rotate, transmission ring gear drives output shaft rotation by fixed disk.

2. planet difference tooth clutches according to claim 1, it is characterised in that: described planetary gear is straight-tooth gear.