SU1449732A1 - Elastic clutch - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used in drive devices for transmitting torque at significant axial, radial and angular displacements of the shaft e alx shafts. The purpose of the invention is to increase the reliability, carrying capacity and compliance under extreme loads. The safety coupling contains a leading coupling half, made of a non-circular shape 2 in cross section, interacting with a driven coupling half containing a hub with a rim 4 and resilient plates 5 mounted on it in the guide elements, symmetrically with respect to the axis of the coupling. When transmitting a torque, the leading coupling half in contact with the elastic plates 5 deforms them and rotates through a predetermined angle. Fixatively, loop-shaped elements 6, made at the ends of the plates 5, provide compliance and damping of shock loads. Centrifugal weights can be attached to them. 3 3, p. f-ly, 5 ill. M.1

Description

The invention relates to machine-CTJ oemao and can be used in drive devices for transmitting torque at significant axial, radial and angular displacements of the connected shafts, as well as for damping torsional vibrations and dynamic loads.

The purpose of the invention is to increase the reliability of the carrying capacity and compliance under extreme loads.

FIG. 2 shows a fuse for the coupling, general view, cross section 5 in FIG. 2, section A-A in FIG. 1; Fig. 3 shows a clutch with roller guides; on figf4 - the same for y with an additional rim of the driven coupling half; Fig. 5 - the same, with fastening at the ends of the plates of centrifugal weights.

The safety coupling contains a leading coupling half, having a hub 1, made of a non-circular shape 2 in cross section, the Dock surface of which in a longitudinal section can be made barrel-shaped along a certain radius of curvature p. The bucket half coupling has a hub 3 with a rim 4, an elastic plate mounted on it 5 interacting with the leading half coupling. The cushion is made with directional elements, between which are placed elastic plates 5. The ends of the plates have locking elements 6 of the loop-shaped for

- The guiding elements can be made # 1 S in the form of slots 7 with rounded edges, located on i. lunch time In this case, the locking elements 6 are installed outside the rim and contact THpyKiT with its surface. Osh can be installed with a gap and, the value of which depends on the used material of the plates, their cross-section and the torque transmitted by the clutch. Elastic plastic. 5 are made of spring steel or of K0Nozotsiy11-5th materials (like Kev-their glass or carbon fibers, longitudinally oriented and impregnated with polymer resins). In order to increase the effect of centrifugal forces, with the npi-expansion of the coupling in the quick-response drive devices, centrifugal weights 8 can be used, which are fixed in space of the loops of the elastic plates 5.

50

5 o

d

five

Reduced friction in contact between rim guides

4 and elastic plates 5 may be carried out by means of

them in the form of rollers 9, fixed. on the end surface of the rim 4 (fig.Z). Elastic plate 5 is placed between the rollers 9.

In order to ensure the safety of operation, the half-coupling drive can be made with an additional rim 10 located concentrically with the rim 4, with the inner surface of which the fixing elements 6 are directed in the opposite direction. With this plate

5 freely pass through slots 7 of the rim 4 of a smaller diameter.

The clutch works as follows

In a static position and when rotating, in any direction without a load, the leading coupling half occupies a certain position relative to the driving half coupling fixed by the design of the coupling. When a torque is applied to the driven coupling half, the elastic plates 5 are deformed, the magnitude

the gap U (Fig. 1) disappears and the leading half of the sleeve turns to a certain angle relative to the axis of rotation. With increasing rotational frequency, under the action of centrifugal forces, the distributed mass of the elastic plates 5 with locking elements 6 and their restoring (potential) forces turn the half coupling half off. the leading coupling half, having a cross section, the large geometrical axis of symmetry of which is oriented parallel to the elastic plates 5, under the action of centrifugal forces tends to occupy a position in which negative energy has a maximum value. Therefore, it tends to reduce the deformation; 11; and the relative rotation of the coupling halves.

With increasing torque above the limit, with appropriate selection of the parameters of the leading coupling half, the cedar can be turned, ultimately deforming the elastic plates and thus protecting the connected units from breakage.

In this case, the locking elements 6, made at the ends of the plates 5, are deformed, being in contact with the outer

3 1449732

the surface of the rim 4, rollers 9 or

2, A coupling according to claim 1, characterized in that it is provided with centrifugal weights, the guides are made E in the form of limit slots on the rim. With rounded edges, centrifugal. The guides are fixed to the ends of the plates J fixed 1 5th elements are placed with the possibility of contact with

 lashing the driven half coupling in the form of a step by the outer surface of the rim, and a carriage with a rim leading the coupling half, you- “and the surface of the driving coupling half

in longitudinal section, an oscilliform form is made,

3, Coupling according to pj, with tl and h and y - 15, so that the guides are made in the form of pairs of rollers mounted on both sides of the respective sections of the plate, and the locking elements are in contact with the surface of the rim 10, and thereby increase compliance and dampen shock loads.

Formula 4.i3 gaining 1e Preservative coupling, non-circular shaped with cross section, elastic plates mounted on the driven coupling half symmetrically relative to the coupling axis and contacting the middle sections with the leading coupling half, characterized in that, in order to increase reliability, bearing capacity and compliance ultimate load-20 "awn of rollers. Kakh, driven by the coupling half, is made with guides, the ends of the plates are made with locking elements of a loop-like shape, with sections

4. Coupling according to claim 1, about tl and h and y - sch and so that the knowledge of the coupling half is equipped with an additional rim, and

plates in the zone adjacent to the fixing ends of the plates are in contact with its curving elements, placed on the inner surface and directing opposite directions.

“Awnings rollers.

4. Coupling according to claim 1, about tl and h and y - sch and so that the knowledge of the coupling half is equipped with an additional rim, and

f

2

0i / e, 3

Yu

fig L

Editor N. Gunko

Compiled by T. Abramova

Tehred L. Serdyukova Proofreader E. Lonchakova

Order 6945/36

Circulation 784

INNIUES of the State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., 4/5.

  .-.-R. - “and ™ - - - -.-- c .--“ --- “- - - - --- - -.,. ™“ “.-. - - --- - -

Production and printing company, Uzhgorod, st. Project, 4

Fiz. five

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Claims (4)

Formula I., 3 gains 1. A safety clutch containing a driven coupling half in the form of a hub with a rim, a leading coupling half, made non-circular in cross section, elastic plates mounted on the driven coupling half symmetrically about the axis of the coupling and 15 contacting the middle sections with the leading coupling half, characterized in that that, in order to increase reliability, bearing capacity and compliance at maximum loads of 20 kah, the driven coupling half is made with guides, the ends of the plates are made with locking elements of a loop-like shape, at The sections of the plates in the area adjacent to the fixing ^2E fixing elements are located in the guides. 2. The coupling according to claim 1, with the fact that it is equipped with centrifugal weights, the guides are made in the form of limit slots on the rim, with rounded edges, centrifugal sleeves are connected to the ends of the plates, the locking elements are located the possibility of contact with the outer surface of the rim, and the outer surface of the leading coupling half in longitudinal section is made barrel-shaped. 3. The coupling according to claim 1, wherein the coupling is in that the BMnojTHeHbi guides are in the form of pairs of rollers mounted on both sides of the respective sections of the plate, and the locking elements are in contact with the surface of the rollers. 4. The coupling according to claim 1, characterized in that the driven coupling half is provided with an additional rim, and the ends of the plates are in contact with its inner surface and directed in opposite directions.