ES2563629A1 - Process of distributed transmission of torque and angular speed reduction (p1) (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Process of distributed transmission of torque and angular speed reduction (p1), which comprises the following steps: To. Transmit the input unit motor torque (m11) and input angular velocity (ω11) from input axes (11'-11n) directly to a plurality of external gears or satellites (301); B. Fix a central ring gear or planet (302); C. Fix a mobile arm or planet carrier (303); D. Drive output torque (m20) and output angular velocity (ω20) to an output shaft (20) directly from an external ring gear or corona ( 304); And. Couple a plurality of distributed torque transmission and angular speed reduction (1) devices, in order to add the power transmitted by each device (1), with the same angular velocity of each device (1). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Procedure for distributed transmission of torque and angular velocity gear ratio (PI).

Obieto v sector of the technique to which the invention refers

The present invention relates to a method for a distributed transmission device of torque and angular velocity transmission.

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More specifically, the device is of the type comprising a plurality of input shafts, an output shaft and an epicyclic or planetary gear; said gear being formed by a plurality of external or satellite gears, mounted on a mobile arm called a satellite carrier, which rotates on a central or planet gear and which also incorporates an external annular gear or crown that meshes with the satellites.

It is of special application, although not exclusively, for the construction of drives based on electric motors, and of advantageous application in vehicles, normal and railway, that require autonomous electric network and batteries for 2 0 storage.

The invention is located in the technical sector of electro-mechanical engineering, and more specifically in that related to electric drives.

25 General and closest prior state of the art

Most of the industrial drives of the state of the art are carried out by electric motors. The most robust, durable and least maintenance electric motor is the three-phase asynchronous squirrel cage motor, built with 4 30 6 2 poles.

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A three-phase asynchronous squirrel cage motor, for an electrical supply with a frequency of eg 50 Hz, will rotate with an angular speed (n) inversely proportional to the number of pairs of poles (p); eg for p = 1, n = 3,000 rpm; p = 2, n = 1,500 rpm.

In the state of the art, machine shafts normally require smaller angular speeds, the use of a gear with a multiplier effect being necessary. An epicycloidal or planetary gear (30) is a gear system or train formed by one or more external gears or satellites (301) that rotate on a central or planet gear (302). Normally, satellites are mounted on a mobile arm called satellite carrier (303) which also allows them to rotate in relation to the central gear. These systems can also incorporate an external annular gear or crown (304), which meshes with the satellites (301).

The invention recommends a method of distributed transmission of torque and angular velocity gear ratio (PI) carried out by means of a distributed transmission device of torque and angular gear ratio (1), formed by a plurality of electric motors (10 ' -10n) electrically powered in "series" connection and integrated in a novel way in an epicyclic or planetary gear (30).

The "series" connection guarantees that the plurality of electric motors (10'-10n) will be fed with the same electric current intensity and that they will generate, even if there are disturbances, the same motor torque; preferably electric motors (10'-10n) are identical.

A three-phase asynchronous electric motor of squirrel cage that allows a "series" connection is described in the patent application of the invention entitled "Asynchronous motor n-fasic squirrel cage", whose owner is the University of La Rioja.

Various planetary epicyclic gears appear in the state of the closest technique (30); We have the following documents, among many others:

In the patent document called D01 with publication number ES 1123331 U and filing date 05.09.2014 and literally entitled: "Continuous and reversible variable transmission", a variable, continuous and reversible transmission, composed of a speed variator, is described, mechanical or electrical or other, and a series 5 of epicyclic gears, which can be defined as a variable, infinitely continuous and reversible transmission.

In the patent document called D02 with publication number ES 2504118 T3 and filing date 21.12.2012 and literally entitled: "Epicycloidal gear system 10", an epicycloidal gear system is described which can be used with advantage, although not exclusively , in the generation of wind energy, to transmit energy from the blades in the electricity generation system, and in the propulsion of aircraft, to transmit power from a turbomachine to the propulsion system.

15 In the patent document called D03 with publication number ES 2426265 T3 and filing date 22.12.2010 and literally entitled: "Gear", an epicycloidal gear is described.

Technical problem raised

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The prior art devices have a problem that focuses primarily on the following aspects:

X Do not describe a procedure for admitting a plurality of input shafts (1T-25 1 ln);

X They do not describe a procedure to indicate that this plurality of input shafts (ll'-ir) are driven by a plurality of electric motors (10'-10n) capable of delivering, even if disturbances occur, identical driving torque.

Technical sale provided by the invention

The procedure of distributed transmission of torque and angular velocity gear (IP) carried out by means of a distributed transmission device 5 of torque and angular velocity gear (1), which advocates the invention, solves the problem satisfactorily previously exposed, in each and every one of the different aspects commented and detailed below:

S The procedure admits a plurality of input axes (11 * -l 1 n);

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S The procedure is based on a plurality of input shafts (1 1-1 ln) that are driven by a plurality of electric motors (10-10n) capable of delivering, even if disturbances occur, identical to the driving torque.

15 Brief description of the figures

To complement the description and in order to help a better understanding of the features of the invention, a set of figures with an illustrative and non-limiting character is accompanied as an integral part of said description.

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Glossary of references

 0)

 Distributed torque transmission device and angular velocity gear ratio.

 25 (10 ')

 Electric motor first;

 (10n)

 Enesimo electric motor;

 (eleven)

 Input shaft;

 01 ')

 Input shaft first;

 (eleven")

 Enesimo input shaft;

 3 0 (20)

 Output shaft;

 (20E)

 Male output shaft end;

 (201)

 Extreme female output shaft;

 (30)

 Epicyclic or planetary gear;

 (301)

 External or satellite gear;

 (302)

 Central ring gear or planet;

 5 (303)

 Mobile arm or satellite carrier;

 (304)

 External ring gear or crown;

 (40)

 Power cable;

 (fifty)

 Case;

 (ED

 Procedure for distributed transmission of torque and gearboxes

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 cion of angular velocity (PI).

 Glossary of symbols

 (Mm)

 Output torque, in Nm;

 15 (Mn)

 Unitary input torque, in N.m;

 (CD20)

 Angular output speed, in rad / s;

 (with)

 Angular input speed, in rad / s;

 (noi)

 Satellite radio, in m;

 (r304)

 Crown radius, in m;

 20 (N)

 Number of input shafts (11);

Figure 1 (Fig.l) .- shows an elevation view (Fig.lA) and in profile (Fig.lB) of a distributed torque transmission device and angular velocity gear ratio (1).

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Figure 2 (Fig. 2) .- shows an elevation view of a coupling of a plurality (in the drawing 3) of devices (1) are shown.

Figure 3 (Fig. 3) .- shows a schematic diagram of the operation of the device 3 0 (1) according to the procedure (PI) claimed by the invention.

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DETAILED DESCRIPTION OF THE INVENTION AND DETAILED DISCLOSURE OF A PREFERRED EMBODIMENT OF THE INVENTION

The figures, which have been included, are described in detail by way of illustration and not limitation.

Figure 1 (Fig. 1) .- In the figure an elevation view of a distributed transmission device of torque and angular velocity gear (1) can be seen. The elements contained inside a housing (50) have been represented in dashed lines so that they can be observed without the need for an auxiliary view.

The device (1) consists of:

to. an epicyclic or planetary gear (30) composed of:

- a plurality of external gears or satellites (301);

- a central ring gear or planet (302);

- a mobile arm or satellite carrier (303);

- an outer ring gear or crown (304);

b. a plurality of input shafts (H'-lln) connected directly to the plurality of satellites (301) and coming from a plurality of electric motors (11-1 ln);

C. a power cable (40) for feeding in series connection to the plurality of electric motors (11-1 ln);

d. an output shaft (20), with one male shaped end (20E) and with the other female shaped end (201), connected directly to the outer ring gear or crown (304);

Figure 2 (Fig.2) .- The figure shows an elevation view of a coupling of a plurality of devices (1). For this, a procedure is applied that includes the next step or step:

5 Stage fV \ Couple a plurality of distributed torque transmission and angular velocity transmission devices (1), in order to add the power transmitted by each device (1) with the same angular velocity of each device (1).

For this, the male part (20E) of a device is coupled to the female part (201) of another device. Through this coupling, the output shaft (20) is added to the power transmitted by each device (1) with the same angular velocity of each device (1).

Figure 3 (Fig. 3). »A schematic diagram of the operation of the device (1) according to the procedure (PI) claimed by the invention is indicated in the figure.

The angular output speed (© 20), in rad / s, will be given by the following equation:

o ^ r30i

2 0 0) 20 - ^ ii

r304

where: angular input speed (with), in rad / s; satellite radius (noi), in m; crown radius (D04), in m.

2 5 If D04> noi then 0020 <coi i obtaining the sought multiplier function.

The output torque (M20), in Nm, will be given by the following equation:

N

^ 20 = ^ 'Mi ^ n

n = l

where: input unit torque (Mi 1), in N.m for each input shaft (11-1 ln); number of input shafts (N).

Since the unit input torque (Mn) is equal for each input axis (ll'-l ln) 5 we will have:

M2o = N • Mn

The method of distributed torque transmission and angular velocity gear ratio (PI) according to the present invention, by using a distributed torque transmission device and angular velocity gear ratio (1) comprises the following steps or steps :

Stage "a". Transmit distributed input torque (Mu) and angular input speed (with) from input shafts (1 l'-l ln) directly to a plurality of external gears or satellites (301).

Input shafts (11-11 ") are connected, coming from electric motors (10'-10n) connected in serial connection and powered by a power cable (40), directly with a plurality of external gears or satellites (301 ).

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Stage "b". Release a central ring gear or planet (302).

The central ring gear or planet (302) is released, so that it can perform rotational movement on its axis.

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Stage "c". Fix a mobile arm or satellite carrier (303).

The mobile arm or satellite carrier (303) is fixed to a housing (503), so that it cannot carry out translation movement on the planet's axis (302).

Stage, fd? \ Drive output torque (M20) and angular output speed (© 20) to an output shaft (20) directly from an external annular gear or crown (304).

An output shaft (20) is connected directly to an external ring gear 0 crown 5 (304) with the angular output speed (0020) of:

r301

<^ 20 - ^ 11 * “

r304

where: angular input speed (with), in rad / s; satellite radius (noi), in m; radius 10 of the crown (D04), in m.

and the output motor torque (M20) being:

M20 = N • Mu 15

where: number (N) of input axes (11); input unit torque (M11), in N.m, for each input shaft (11 -1 ln);

Claims (2)

1. Procedure for distributed transmission of torque and angular velocity gear ratio (PI), using a distributed transmission device 5 for torque and angular gear ratio (1), characterized in that it comprises the following steps: to. Transmit distributed unit torque (Mu) and angular input speed (with) from input shafts (11 11n) directly to a 10 plurality of external gears or satellites (301); b. Release a central ring gear or planet (302); C. Fix a mobile arm or satellite carrier (303); fifteen d. Drive output torque (M20) and angular output speed (0020) to an output shaft (20) directly from an external ring gear or crown (304); twenty the angular output speed (C020) being, in rad / s, of: _ r301 ^ 20 - Mu * “ '304 where: - with is the angular input speed, in rad / s; 25-doi is the radius of the external or satellite gear (301), in m; Y - no4 is the radius of the outer ring gear or crown (304), in m. and the output motor torque (Mho), in N.m, of: M20 = N • Mu 30 where: - N is the number of input axes (11); Y - Mu is the unit input pair, for each input axis (ll'-lln) 5 2. Procedure for distributed transmission of torque and angular velocity gear ratio (PI), according to claim 1, characterized in that it comprises the following stage: 10 e. Couple a plurality of distributed torque transmission and angular velocity transmission devices (1), in order to add the power transmitted by each device (1) with the same angular velocity of each device (1).