CN2311655Y

CN2311655Y - Compound pendulum type internal engagement few tooth differential planetary driver

Info

Publication number: CN2311655Y
Application number: CN 97247513
Authority: CN
Inventors: 朱湘云
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-16
Filing date: 1997-10-16
Publication date: 1999-03-24
Anticipated expiration: 2007-10-16

Abstract

The utility model provides a compound pendulum type internal engagement few tooth differential planetary drive mechanism. The utility model is characterized in that four or six planetary gears are installed on mutually parallel link mechanisms; the utility model is driven by three crankshafts (or two crankshafts) to rotate around a center wheel in meshing engagement. The utility model has the advantage of dynamic balance. Having the advantage of 92-98% efficiency, the utility model can transfer ten thousands of KW power; noise is under 80 dB (A); engagement factor epsilon is about 2; single-stage speed reducing ratio can be greater than 100; the utility model can bear impingement and crush load; the service life exceeds 30 thousand hours; having the advantage of high drive accuracy, the utility model can reduce speed and can speed up; the utility model has the advantages of high kw/kg value, high kw/mm< 3 > value and low unit torsional moment cost. With relatively great design difficulty, the utility model has the advantages of simple structure and easy manufacture.

Description

Engagement little gear difference planetary driving mechanism in the physical pendulum formula

The utility model belongs to mechanical subject Gear Planet Transmission technical field, according to International Patent Classification (IPC) IPC ⁵Regulation can be summarized in F16H ¹/ oo or F16H ²¹The classification position of/oo.

The application's background technique is the basic theory of mechanical subject---" planar linkage " and " interior engagement planetary gear train " these two academic problems.Gear Planet Transmission is an intermediary between power engine and the actuator.Its superior performance, particularly big retarding replaces traditional approachs such as conventional gear, worm gear than in the transmission just in a lot of fields, and development prospect is long-range.

But the Gear Planet Transmission technology waits perfect.On long terms to there being following problem:

1. the inertial force and the moment of inertia that are produced when turning round, dynamic unbalance is difficult to high speed operation;

2. the connecting lever bearing of Gear Planet Transmission is positioned at the casing cardia, and stressed very big, the life-span is not long;

3. the W mechanism of outputting power is undesirable, and a lot of types adopt the overhang general layout, often damage;

4. most model structure complexity, particularly cycloidal-pin wheel transmission, there are many holes, Xiao, cover in the border, the more difficult processing of flute profile, the technological design level is not high;

For many years, the claimant is fermenting the concrete scheme that solves above problem always.

In the recent period the claimant confirms that studying in great detail after No. 96116914.1 names are called the patent of invention prospectus of " multi-turn crank internal engagement planetary gearing mechanism " this is mechanism's invention that item has great value, and it has fundamentally solved the outstanding difficult problem of depositing of Gear Planet Transmission.But the just emerging not Chinese mugwort of interior engagement driving science relates to many theories and technical problem, includes and dives deeply, so can also improve raising.

The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and three of a kind of employing or two bent axles is provided, and is directly imported by bent axle in the physical pendulum formula of power and mesh little gear difference planetary driving mechanism (hereinafter to be referred as engagement machine in the physical pendulum).

The purpose of this utility model can reach by following measure:

Engagement little gear difference planetary driving mechanism in a kind of physical pendulum formula, it drives ring plate 2 by bent axle 1 and does plane-parallel motion, makes internal gear 3 and central gear 4 engagements, and through lower velocity shaft 5 transferring power, elastic component 6 is characterized in that between ring plate 2 and internal gear 5:

A. bent axle 1 has three, is evenly arranged in the excircle of central gear 4;

B. on every bent axle 1, all have four sections (or six sections) returnnings that are center antisymmetry geometrical shape;

C. four the corresponding crank throws that (or six) ring plate 2 connects on three bent axles 1 are formed four linkage mechanisms that (or six) are parallel to each other in the space;

D. the geometry symmetry center of every ring plate 2 is equipped with internal gear 3;

E. the meshed center distance of internal gear 3 and central gear 4 equals the throw of eccentric of bent axle 1.

The purpose of this utility model can also reach by following measure:

A. bent axle 1 also can use two, is arranged in the geometry symmetrical center line both sides of central gear 4;

B. on the geometry symmetrical center line of every ring plate 2, internal gear 3 is installed.

Fig. 1 is the utility model sectional drawing.

Fig. 2 is the another kind of sectional drawing of the utility model.

Fig. 3 is the utility model transmission principle figure.

Among the figure:

1, bent axle 2, ring plate 3, internal gear 4, central gear 5, lower velocity shaft 6, elastic component

Below in conjunction with accompanying drawing the utility model is further described:

Know by " theoretical mechanics ": a double-crank parallelogram linkage, when their crank is done the constant speed rotation, the motion of each point on the connecting rod, with the motion of crankpin end points, identical.The ring plate 2 of present patent application, being developed by above connecting rod exactly forms, and the center of internal gear 3 then is located on the geometrical center or geometry symmetrical center line line of ring plate 2.

So when double-crank by casing location during rotation, the center of internal gear 3, will be on the linkage mechanism center line a certain fixed point and rotating.

Know by " Der Grundsatz der Maschinen ": as adorn a lower velocity shaft 5 in above fixed point, mounting center wheel 4 on the axle, it is identical with the modulus of internal gear 3, and meshed center distance between the two, just identical with the length of above crank, then can form " planar linkage---interior engagement " compound linking mechanism.When crank rotates, internal gear 3 will be made the planet gear motion around central gear 4.

If crank is initiatively imported power, then central gear 4 deceleration outputting powers;

If central gear 4 is initiatively imported power, then crank speedup outputting power.

Here it is＜monocycle in the engagement Gear Planet Transmission rationale.Above four " monocycles " string is gathered into folds, is contained on the central gear 4, identical with two again bent axle connect (respectively making four sections isogonic innermost being handles that are center antisymmetry geometrical shape on the bent axle) then just combine to＜four turn engagement machine in the physical pendulum.Internal gear 3 on four ring plates will have sequentially around central gear 4 circulation engagements.

After the same method, above six " monocycles " string is gathered into folds, be contained on the central gear 4, identical with two again bent axle connects (respectively making six sections isogonic innermost being handles that are center antisymmetry geometrical shape on the bent axle), turns engagement machine in the physical pendulum so just combine to＜six 〉.Internal gear 3 on six ring plates will have sequentially around central gear 4 circulation engagements.

When adopting three bent axle 1, its working principle is with last identical.

When present patent application is worked as speed reducer, can be by a bent axle input power; Also can import power synchronously by two or three bent axle.Be called the Synchronous Transmission synchrotie this moment.

When the motion of present patent application reverses, promptly, during bent axle 1 outputting power, can be used as booster engine and use by lower velocity shaft 5 input power.

Engagement machine velocity ratio computational methods in the physical pendulum

i ₃₄=-Z ₄/ (Z ₃-Z ₄) negative value represents that rotary speed direction is opposite

N ₁=i ₃₄N ₅

N ₅=N ₁(Z ₄-Z ₃)/Z ₄

Z ₃--the number of teeth of internal gear (3)

Z ₄--the number of teeth of central gear (4)

N ₁--the rotating speed of bent axle (1) (rev/min)

N ₅--the rotating speed of lower velocity shaft (5) (rev/min)

Present patent application is the advanced experience of using for reference the Soviet Union and Britain, and in China 96116914. The improvement mechanism that proposes on the basis of 1 patent of invention. It is real example that historical antecedent is arranged, and technology is ripe. Process Our small lot batch manufacture checking, the existing correlation technique of contrast has advantage, and introduce applicable field as Lower:

1, Gear Planet Transmission W output mechanism commonly used is deleted, and monocycle engagement contact ratio ε ≈ 2 is heterogeneous Position, the moving engagement of multiple tooth many circulation tumbler, maximum can be transmitted KW power up to ten thousand, and can withstand shocks and the peak Load. Possess design level huge, heavily loaded, equipment requirement, can be applicable to mine, cement machine, press sugar Machine, metallurgy, lifting, large gate etc. heavy duty industrial field, when unit was big, superiority was more obvious.

2, the gear teeth of this patent adopt quenched and tempered steel, do not quench, roll flute not; And be that interior engagement few teeth difference is many The ring transmission, the number of teeth of moment interlock is many; Monocycle facewidth degree is narrow; The mutually restriction of many rings has reduced shake during engagement Moving ... that these factors can be lower than below the 80dB (A) noise.

3, this patent has been properly settled the dynamic equilibrium problems of inertia force and moment of inertia, engagement fulcrum in the gear Reliable and stable, possess the design level of high speed unit requirement, can be applicable to aviation, navigation, space flight and other Military field.

4, this patent is realized the power dividing principle, has solved most Gear Planet Transmission connecting lever bearings and has been subjected to overload A difficult problem, making load share 8-18 crank throw necks; Because of all parts, casing is how much again The Central Symmetry general layout, each fulcrum reaction power face-off disappears mutually, so whole unit does not have weak link, so Life-span can surpass 30,000 hours, has high reliability, high degree of safety, can be applicable to high-altitude mechanical, the cableway cable The rope transportation, tourist industry, large amusement machine, high risk operation, the fields such as poisonous medium environment. To human body Life and valuable goods and materials, property, national treasury etc. have high safety factor.

5, the conjugate profiles meshing condition is satisfied in the gear of this patent engagement, has avoided cutting to interfere and engagement All geometrical constraints of interfering, advanced and each joint installation bearing of transmission principle; The ring plate bottom is immersed in the oil, The part of product and assembly precision and dimension chain are calculated in addition, and strict design system and control measure are arranged, so The unit gross efficiency is 92-98%, than worm-drive, than types such as WW, NN, NGW, N The Gear Planet Transmission efficient height of formula.

6, this patent is theoretical very complicated with calculating, but simple in structure, the part kind is few, be convenient to produce in groups, Produce in enormous quantities; And change speed reducing ratio and only need to change three parts, the general part ratio is high, can be rapid Organize 500-800 kind product variety, to satisfy user's variation requirement, so factory easily forms greatly Company of type transnational group.

Claims

1. mesh little gear difference planetary driving mechanism in a physical pendulum formula, it drives ring plate (2) by bent axle (1) and does plane-parallel motion, makes internal gear (3) and central gear (4) engagement, through lower velocity shaft (5) transferring power, elastic component (6) is characterized in that between ring plate (2) and internal gear (5):

A. bent axle (1) has three, is evenly arranged in the excircle of central gear (4);

B. on the every bent axle (1), all have four sections or six sections returnnings being center antisymmetry geometrical shape;

C. four or six ring plates (2) connect the corresponding crank throw on three bent axles (1), form four or six linkage mechanisms that are parallel to each other in the space;

D. the geometry symmetry center of every ring plate (2) is equipped with internal gear (3);

E. the meshed center distance of internal gear (3) and central gear (4) equals the throw of eccentric of bent axle (1).

2. engagement little gear difference planetary driving mechanism in the physical pendulum formula according to claim 1 is characterized in that:

A. bent axle (1) also can use two, is arranged in the geometry symmetrical center line both sides of central gear (4);

B. on the geometry symmetrical center line of every ring plate (2), internal gear (3) is installed.