SU1434167A1 - Safety friction clutch - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to devices for transmitting torques of limited magnitude. The purpose of the invention is to enhance the functionality by providing damping properties. Half coupling 1, 2 are located coaxially. Half coupling 2 is covered by a flexible tape (GL) 3. On the coupling half 1 magnets 5 are fixed, and at the ends of GL 3 - magnets 7. The ends of GL 3 are connected by an elastic link. The interaction of coaxial coupling by means of CH 3 and the elastic coupling of the magnets 5, 7 determines the elastic properties and damping capacity of the coupling. 2 Il.

Description

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The invention relates to mechanical engineering, in particular to devices for transmitting torques of limited magnitude.

The purpose of the invention is to enhance the functional capabilities by providing damping properties.

FIG. 1 shows the clutch, obdiy view; in fig. 2 - the same, side view.

The safety clutch contains a drive 1 and a driven 2 coupling half, coaxially to each other. The coupling halves are interconnected by means of a flexible steel tape 3 with a friction lining 4 attached to it, which encloses the driven half coupling 2. On the leading coupling half I there are two fixed leashes made in the form of permanent magnets 5. On supports 6, made, for example, in the form of bent ends flexible tape 3, parallel to the magnets 5, two other magnets 7 are fixed with the polarity that is the same with the magnet 5. Pressing the flexible tape 3 with the lining 4 against the surface of the half coupling 2 is carried out both by the forces generated by the interaction of the magnetic fields of the magnets 5 and 7, and by the forces created by the pre-compressed springs 8 placed between the supports 6 and the casing 9. Fixing the springs 8 with respect to supports b and casing 9, as well as casing 9 with respect to tape 3, is not shown. The means for controlling the compression forces of the springs 8 are also not shown.

The clutch works as follows.

In an idle clutch, the forces applied to the supports 6 (the compressive forces of the springs 8 and the forces of interaction of the magnets 5 and 7) are the same. Torque from coupling half 1 is transmitted to coupling half 2 through the interaction forces between magnets 5 and 7 and the frictional forces between friction lining 4 and coupling half 2. The circumferential force from magnet 5 is transmitted by magnet 7 and support 6 to flexible strip 3, facing 4 and forth driven semi-clutch 2.

When transmitting a torque, the value of which does not exceed the magnitude of the nominal moment, the forces applied to the ends of the flexible are redistributed.

The scientific research institute magnet 5 of coupling half 1, located right from the vertical axis of symmetry of the coupling, converges with magnet 7 fixed on the right support of the b end of the flexible tape 3, which in this case is the connecting end. The indicated convergence of magnets 5 and 7 is due to the fact that the driven coupling half 2 is loaded with a moment of resistance, and the interaction force of the magnets 5 and 7, corresponding to their mutual arrangement in a non-rotating coupling, is insufficient to overcome the moment of resistance on the coupling half 2 without their mutual approach.

The convergence of the magnets 5 and 7 in the right part of the coupling and the corresponding removal of the magnets in the left part leads to an increase in the force on the incoming (right) end of the flexible tape 3 and to a decrease in the force on the downward (left) end of the tape. The compression forces of the springs 8 do not change.

When overloaded, the equilibrium of the belt 3 is disturbed and it slides relative to the half-coupling 2, i.e. the skidding of the coupling. When reverse coupling works as described.

25 Due to the fact that the leading coupling half 1 and the flexible tape 3 have a non-rigid (elastic) connection in the form of magnetic fields of the same polarity, the coupling has elastic properties, which improves its performance,

 for example, damping ability, elimination of resonance during acceleration and stopping, etc.

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Claims (1)

Invention Formula Friction clutch, containing coaxially located leading and driven P0v ymufty, interconnected by means of a flexible tape, the ends of which are connected by an elastic link, as well as a flood device, characterized in that, in order to extend the functionality by providing damping properties, the flood device made in the form of the spirit of monopolar magnets, the ribbon is flexible mounted on the web 3. Consider, for example, the case where the coupling half, two magnets attached to yes the clutch rotates counterclockwise. When rotating in the indicated ends of the flexible tape, and the other two parallel with them on the leading coupling half. The scientific research institute magnet 5 of coupling half 1, located right from the vertical axis of symmetry of the coupling, converges with magnet 7 fixed on the right support of the b end of the flexible tape 3, which in this case is the oncoming end. This convergence of magnets 5 and 7 is due to the fact that the driven coupling half 2 is loaded with a moment of resistance, and the interaction force of the magnets 5 and 7, corresponding to their mutual location in a non-rotating coupling, is insufficient to overcome the moment of resistance on the coupling half 2 without their mutual approach. The convergence of the magnets 5 and 7 in the right part of the coupling and the corresponding removal of the magnets in the left part leads to an increase in the force on the incoming (right) end of the flexible tape 3 and to a decrease in the force on the downward (left) end of the tape. The compression forces of the springs 8 do not change. When overloaded, the equilibrium of the belt 3 is disturbed and it slides relative to the half-coupling 2, i.e. the skidding of the coupling. When reverse coupling works as described. 5 Due to the fact that the leading coupling half 1 and the flexible tape 3 have a non-rigid (elastic) connection in the form of magnetic fields of the same polarity, the coupling has elastic properties, which improves its performance,  for example, damping ability, elimination of resonance during acceleration and stopping, etc. 0 Invention Formula Friction clutch, containing coaxially located leading and driven P0v ymufty connected between themselves by means of a flexible tape, the ends of which are connected by an elastic link, as well as a pushing device, characterized in that, in order to extend the functionality by providing damping properties, the poking device made in the form of the spirit of monopolar magnets, the flexible tape is mounted on the driven half coupling, two magnets are fixed on ends of the flexible tape, and the other two - parallel to them on the leading coupling half. 2 j (pae.f