Device for orienting gear wheel in gearing

FIELD: mechanical engineering.

SUBSTANCE: rolling bearings of shaft (10) are housed in eccentric sleeves (3) and (4). Sleeve (3) receives bushings (5) and (13). Sleeve (4) receives bushings (6) and (14). First bushings (5) and (6) are made of eccentric and provided with conical outer surface and radial grooves. Second bushings (13) and (14) are mating with first bushings (5) and (6) over the spherical surface whose center is on the axis of shaft (10). Additional spherical surfaces are mating with the spherical surfaces of bearing washers (15) and (16) mounted on shaft (10). Bearing washers (15) and (16) are arranged in stop nuts (17) and (18) mounted in housing (2).

EFFECT: expanded functional capabilities.

5 dwg

 

The invention relates to mechanical engineering and can be used in gears to regulate the relative position of the mating gears.

A device (A.S. USSR 1677433. Device for guiding gears in gear MCI: F 16 H 55/12, 1/16, 3.19.09.88), comprising a housing, placed in it a shaft for mounting wheels, two pairs located on the shaft in one another eccentric bushing fixed in the housing, one of which in each pair is made with radial grooves, and the surface of the pair of eccentric bushings are spherical with a common center, the outer surface of the outer eccentric sleeve is made conical, and the device has placed in the enclosure glasses with conical surfaces intended for installation outer eccentric sleeves.

The disadvantage of this device is the inability to implement rigid kinematic connection between the gear wheel and the shaft on which it is installed, which limits the use of this device for adjusting the position of the intermediate gear wheels, not transmitting torque on its own shaft.

The technical result of the invention is to expand the functionality of the device during orientation by adjusting prostranstvennoj the position is rigidly fixed on the shaft of the toothed wheel.

This technical result is achieved in that the device comprising a housing, placed in it a shaft for mounting the wheel mounted on the shaft two pairs of bushings located one within the other, the first of which is made eccentric with a tapered outer surface and rational grooves, and the surface of the coupling of both sleeves of both pairs are spherical with a common center, and placed in the enclosure glasses with internal conical surfaces intended for placement eccentric bushings, characterized in that the glasses are made eccentric, the second sleeve in both pairs are made with additional outer spherical surfaces, and the device is equipped with two mounted on the shaft supporting washers with a spherical surface mating with complementary spherical surfaces of the second sleeve and having common centers, and lock nuts.

Application of the proposed device enables adjustment of any gears, as the freely rotating on its own shaft and rigidly attached to the shaft that extend the functionality of the device when the orientation of the gears in the kinematic chain of machines. In addition, the proposed device allows you to unload the shaft in the axial direction from at the Eli, locking the supports in a predetermined position.

Known technical solutions with the features distinguishing the claimed solution to the prototype, in the course of the search of the patent and scientific literature, not identified, therefore, the proposed device meets the criterion of "substantial differences", i.e. has novelty.

Figure 1 shows a longitudinal section of the device for guiding the toothed wheel; figure 2 - section a-a in figure 1; figure 3 is a cross-section B-B in figure 2; figure 4 - section b-b In figure 2, figure 5 - section G-G in figure 1.

Device for guiding the toothed wheel 1 (Fig 1)installed in the housing 2 gears, contains the cups 3 and 4, having an internal conical Cam surface and the mating outer cylindrical surfaces of the cylindrical surfaces in the housing 2. Each of the eccentric glasses 3 and 4 are two bushings, the first of which 5(6) is made eccentric with a tapered outer surface and a radial slots 7 and 8 (figure 2) to improve compliance. Its outer conical surface of the sleeve 5(6) mates with the conical surface of the Cup 3(4). The second sleeve 13(14) paired with the first 5(6) on the spherical surface of radius R1with a common center located on the axis of the shaft 10. Gear wheel 1 is fixed from rotation by a key 9 on the shaft 10,which is mounted on rolling bearings 11 and 12, posted by second sleeves 13 and 14 located on both sides of the gears 1 and mating with the first (eccentric) bushings 5 and 6. The second bushing 13 and 14 with their additional outer spherical surface of radius R2facing the toothed wheel 1, mate with the spherical surface of bearing washers 15 and 16, fixed in the housing 2 lock nuts 17 and 18. While performing advanced spherical surface on each of the second plugs is possible both with the same radius R2and with different radii (R2and R3). In addition, the cups 3 and 4 have their flanges polyalloy grooves 19 (figure 5) and fixed in the housing 2 by flanges 20 and 21 through compensatory plates 22 and 23 by screws 24. Gear wheel 1 is fixed on the shaft 10 in the axial direction of the sleeves 25 and 26 and, in addition, the output end of the shaft 10, the transmitting external torque M, equipped with a sealing device comprising a seal 27 and the gland flange 28, is fixed in the flange 21 by screws 29.

The orientation of the toothed wheel 1 relative to the mating wheel (not shown) is carried out as follows.

When the meshing gears 1 with the other two gears (not shown) to regulate pupillary distances in each pair of wheels is provided by common-mode rotation around own the axes of the pairs of the first eccentric bushing 5, 6 and glasses 3, 4 for a specific installation angle, whose value is determined before adjustment by calculation based on the known geometric and dynamic errors of transmission and values of eccentricities e1and e2glasses 3 and 4 and the first eccentric bushings 5 and 6 (figure 2). Install the required turn corners glasses 3, 4 and bushings 5, 6 relative to the axes is performed on risks (labels), applied on the end surfaces of the housing 2, the cups 3, 4 and sleeves 5, 6.

The optimum angular position of the shaft 10 of the gear wheel 1 relative to the mating gears is spread over the sphere of radius R1in the plane perpendicular to the plane of rotation of the wheel 1, and controlled experimental method, for example, by contact of the teeth of the mating pairs of wheels. However before adjusting the angular position of the shaft 10 loosen the lock nuts 17 and 18, which facilitates axial and radial samostalni reference washers 15 and 16, on the mating spherical surfaces, for example, R2with the second bushing 13 and 14.

After completing the orientation gears 1 biased lock nuts 17, 18 and simultaneously fixed in the housing 2, the first eccentric Bush 5, 6 and glasses 3, 4 through compensatory plates 22 and 23 of the flanges 20 and 21 by means of screws 24. Platnost the mutual contact of each eccentric sleeve 5, 6 with glasses 3, 4, and second sleeves 13, 14, and these bushings 13, 14 with the supporting washers 15 and 16 are provided elastic properties of the bushings 5 and 6, selection of the required thickness compensator plates 22, 23 and torque the lock nuts 17 and 18.

The placement of the linear guides of the second bushings having two outer spherical surfaces, one of which each of these bushings is mated with the first sleeve on the spherical surface of radius R1with a common center located on the axis of the shaft, and the second spherical surface, each second sleeve mates with his support washer on the spherical surface with the same or different radii, with the thrust washers are lock nuts, mounted in the housing, and the glasses are made eccentric in comparison with the prototype, allows you to extend the functionality of the device and adjust the position of any gears as freely rotating on its own shaft (axis)and rigidly attached to the shaft. In addition, the proposed device allows you to unload the shaft in the axial direction from the effort of fixing the support in a predetermined position. This will improve the build quality of the kinematic chain drives accurate and power machines.

Device for guiding gears in gear, sod is rashee case, inside the shaft for mounting the wheel mounted on the shaft two pairs of bushings located one within the other, the first of which is made eccentric with a tapered outer surface and a radial grooves, and the surface of the coupling of both sleeves of both pairs are spherical with a common center, and placed in the enclosure glasses with internal conical surfaces intended for placement eccentric bushings, characterized in that the glasses are made eccentric, the second sleeve in both pairs are made with additional outer spherical surfaces, and the device is equipped with two mounted on the shaft supporting washers with a spherical surface mating with additional the spherical surfaces of the second sleeve and having common centers, and lock nuts.



 

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