SU1525377A1 - Mechanical step-less drive - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in drives of machines and mechanisms, for example in surfacing machines. The aim of the invention is to expand the range of transmission control by having multiple paths of motion conversion. The input shaft 2 is connected by means of gears with the drive shaft of the eccentric 19, the driven shaft 21 and the outer yoke 23 of the conversion mechanism. The housing 1 is connected through gears to the drive shaft of the eccentric 19 and the outer race 23, which is mounted rotatably about the axis of the drive shaft. The five controlled sleeves 11–15 ensure the inclusion of appropriate gear mechanisms. 2 Il.

Description

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The invention relates to mechanical engineering and can 6i) iTb IL-nol () baths in machines and mechanisms, such as surfacing machines.

Tse. and, H) of the invention is the dissipation of a regular 1lir () transfer bath by taking into account several movement transformation paths.

FIG. 1 shows a diagram of the mechanical continuously variable transmission; in fig. 2 - cut L FIG. one.

The mechanical gearless transmission (Fig. 1) includes a housing 1, a gear 2, a gear H 3 stern, 10 10, control couplings II-15, an eccentric 16, an eccentricity control mechanism, made in the form of a screw bunker 17 and a handle 18, the master eccentric shaft 19, intermediate shaft 20, driven shaft 21, feudalizing mechanism, 1nenny in the form of a ratchet wheel 22, rigidly connected to the intermediate shaft 20 and the ferrule 23 with () a tank 24, pressed to the wheel 22 elastic: elements 25 (fig. 2). The outer cage 23 of the mechanism is installed in the core - 1 with the possibility of vrapeni and is kinematically connected with the input shaft 2 with the help of HiecTcpeH 4, 6 and controlled by the clutch 12.

In addition, the transmission contains a cross coupling 26, a kinematically coupled intermediate shaft 20 with an axle shaft 21, and axes 27, 28.

. Mechanical besstunenchatata and transfer works as follows.

1. In deceleration mode, the transfer ratio () (n1) of the pattern of mechanicism varies in and; elements, 38 (at 11), so that surfacing in a spiral).

In this variant of the work of transmission VK, 1H, the controllable clutches (which can be electromagnetic clutches, gears, etc.) are 11 and 14, and clutches 12, 13 and 15 are turned off. BpanieuHe from the input shaft 2 is transmitted to the PC through the HiecTepen 3 10-9 cogging gear onto the eccentric drive shaft 19. At the same time, the outer race 23 and the reforming mechanism remain non (.) Duplicated due to the CBoei o interaction by means of 6-8 gear teeth and uiravl clutch 14 through the axis 27 with the corpus 1 transmission.

With a non-zero value of the eccentricity OS, the rotation of the drive shaft of the eccentric 19 and the eccentric 16 causes a complex flat i movement of the intermediate shaft 20 due to the interaction of the ratchet co. 22 with the dogs 24 of the outer ring 23 to transform mechapism. A characteristic feature of these schemes is that the pawl 24 engages with the ratchet wheel 22 alternately one after the other. With

five

0

five

0

five

0

five

0

five

In this case, at any moment of time, the load is taken by the pawl that can give the maximum rotational speed to the shaft 21.

With the cross-coupling 26, the complex motion of the intermediate shaft 20 is converted into the rotational motion of the driven shaft 21. With an increase in the eccentricity of the OS and the root area of the weft shaft 20, the ratio of the gear ratio of the conversion mechanism increases (and therefore the entire transmission), since the amplitude of oscillation of the pawls 24 increases, the change in eccentricity is carried out by the handle 18 of the power of the screw bunker 19 of the mechanism of changing the eccentricity performed according to the eccentric eccentric.

When the value of the eccentricity is zero when the eccentric shaft 19 rotates the intermediate shaft 20 and, accordingly, the driven shaft 21 remains stationary, the stop mode is restored.

In the general case, the gear ratio for this variant changes in

0 1 1з-yes-1ad.d-0.38, (1)

where Lg ,, (, o is the preferred ratio of the gear jaws 3--10 and 9-10.

2. Accelerating mode can be used in linear deposition. Here, the gear ratio of the transforming mechanism varies within

a) 1 i 1,36.

In this version of the transfer operation, the controlled clutches 12 and 15 are turned on, and the clutches 11, 13 and 14 are turned off. The rotation from the input shaft 2 is not affected by the m gear HjecTepeH 4-6 on the outer ring 23 of the conversion mechanism. At the same time, the eccentric drive shaft 19 and eccentric 16 remain stationary due to the interaction of shaft 19 by means of gear teeth 9-10 and controllable clutch 15 through axis 28 with the transmission housing.

With a non-zero value of the eccentricity OS, the rotation of the outer cover 23 is converted into rotational motion of the intermediate shaft 20 and through the cross-coupling 26 is transmitted to the driven shaft 21, and since the ratchet wheel 22 engages with the ratchet wheel 22, giving the greatest angular velocity at a given moment in time rotation of the driven shaft 21, then its angular velocity is greater than the angular velocity of rotation of the yoke 23.

When the eccentricity is zero, the angular velocity of rotation of the yoke 23 is equal to the angular velocity, the output shaft increases with an increase in the value of the eccentricity OS OS,

In both cases, the gear ratio d, t of this variant varies within

c..b-1,36, (2)

where J is the gear ratio of gears 4-6,

b) 74.

In this embodiment, the controlled clutches 11 and 12 are turned on, and the clutches 13, 14 and 15 are turned off. The rotation from the drive shaft 2 is simultaneously transmitted to the drive shaft of the eccentric 19 and to the outer ring 23. In the conversion mechanism, the two motion conversion modes are added, resulting in an increase in the transmission control range, however, the accuracy of the specified gear ratio is reduced.

In the general case, the gear ratio varies within

c. (14-b 1.36 + 1z - „- No-9 0.38) (3)

3. drive.

The gear ratio for this mode is iy-. It is carried out simultaneously with the knurling m of the controlled clutch 13 and 15 and turning off the clutches 11, 12, 14. Here is the rotation from the input shaft 2

0

through cog 1pestrni 5 7 and rights. 1 e. M. Coupling 13 is transmitted to the driven n; | l 21. In this case, the movement is transmitted to the outer race 23 (through the cross coupling 2 () and the intermediate shaft 20, which is mounted on the fixed eccentric 16 |.

Claims (1)

Invention Formula A mechanical gearless transmission containing the bodies, the drive and driven shafts placed in it, an eccentric mounted on the drive shaft and a conversion mechanism with an outer clip, characterized in that, in order to regulate the range 5 of the adjustment, the clip is installed with the possibility of rotation with respect to the axis of the drive shaft, and the transmission supply 1a with the input shaft, back-up mechanisms connecting the input shaft with the drive shaft, the driven shaft and the outer yoke, and the housing with the driving shaft and the outer yoke, and the control muffs, predn Achen d. 1 controlling respective gear mechanisms. 0 27 P 25