SU418644A1 - CAM COUPLING - Google Patents

Description

one

The invention is in mechanical engineering.

A cam sleeve is known, containing two disk coupling halves coupled to each other by means of protrusions and troughs at their ends, and a synchronization mechanism, made in the form of a fricpyon pair, which provides an additional rotation of one of the coupling halves so that with axial movement of one from the coupling halves, its protrusions freely entered into the depressions of the other; the friction synchronizer equalizes the speeds of rotation of the shafts when shifting gears, makes it possible to switch on the move without reducing the number of revolutions in fishing. However, when switching clutches, considerable friction occurs in the friction pairs of the synchronizer, which leads to wear of the latter.

In order to eliminate this disadvantage in the coupling, the synchronization mechanism is made in the form of permanent magnets arranged with successive alternation of poles in the sockets made in disks of couplings evenly around the circumference, and in one disk the sockets are located along the axis of the projections. In addition, in order to be able to turn it on with loaded as well as rotating shafts, the half-coupling disk, in which the sockets are located along the axis of the acting wheels, is mounted on the stage with the possibility of its limited angular rotation.

FIG. 1 shows the coupler in coupled position; in fig. 2 - the same, in a synchronized position before the start of engagement; pas figs. 3 is a section along A-A in FIG. 2

The clutch consists of two disk coupling halves / and 2, sitting on the driven 3 and driving 4 shafts. At the ends of the discs of the half couplings, the protrusions and depressions 5 are made. The permanent magnets 6 and 7 are located in the sockets, which are uniformly circumferentially circumscribed in the discs of the half couplings. One part of the nests is located along the axis of the projections, and the other - along the axis of the depressions. Magnets are embedded with sequential alternating poles. The disk 8 can be made separately from the hub and mounted on it with a limited angular rotation of the step size of the projections. This engages the half couplings under significant loads and shaft rotation speeds.

Iolumufta are made from non-magnetic materials (steel, alloys).

At a maximal "mismatch of the semi-UFT, the protrusions of one half of the coupling are opposite the projections of the second half of coupling 2. In this case, the permanent magnets 6 and 7 are with their respective poles opposite each other (.V,; V) and (S, S), and "repel each other, and therefore, turn relative to each other in the direction of their opposite poles and stop when they are coaxially located (L, S). Since the permanent magnets 6 and 7 are located coaxially with the protrusions of one coupling and the holders of the other coupling with sequential alternation of poles (L, 5) in each coupling, before starting the coupling coupling (see figure 2), the protrusions of one coupling half oppose the depressions the second coupling half, ensuring unhindered coupling of coupling couplings, (see Fig. 1). The rotational force of the coupling half, developed by permanent magnets, is much greater, for example, to force the rotor of the electric motor to move if one of the coupling halves is attached directly to the motor shaft. In such cases, this coupling half rotates somewhat (by the pitch of the projections). If the clutch is located in the middle of the kinematic chain, then both coupling halves are turned in different directions, choosing a backlash, i.e., for example, in gears and other movable joints. When the relative rotation of the shafts 3 and 4 is associated with the larger moments, this rotation of the coupling halves can be ensured by relative rotation of the disk 8 of the coupling half 1 at a certain small angle (by the pitch of the actuators) relative to its hub, KOTOpi m is limited by rigid stops (not shown in the figures). The same relative rotation of the disk 8 with protrusions and magnets 6 relative to the hub contributes to the engagement of the coupling halves when the shafts rotate at higher speeds than in conventional cam clutches, due to the “enticing effect of magnetic zeros of permanent magnets acting on the movable disk 8, which

shchu, nanr.

Uv; 1kuyayuschy turn driven half coupling when it is disengaged position (with

the mutual arrangement of the magnets) can be excluded by a small additional axial dilution of the coupling halves, i.e. a slight increase in the axial stroke of one of the coupling halves. The magnitude of this extra lengthening

The coupling gap will be small, due to the steeply falling characteristic of the mechanical interaction of the poles of the magnet, depending on the size and shape of the air gap, and will not cause changes in the kinematic

to the half coupling switching circuit (only the tilt angle of the switching lever will slightly increase or its ratio will change).

Subject invention

1.Kulach coupling containing two disk coupling coupled to each other using protrusions nampered at their ends

and troughs, and a synchronization mechanism, different from those.m, in order to reduce friction losses, the synchronization mechanism is made in permanent and permanent magnets arranged with alternating poles in

nests made in the half-coupling discs are uniformly rio circles, with the sockets on one disk located along the axis of the projections, and on the other - along the axis of the hollows.

2. Coupling but also 1, characterized in that, in order to be able to turn on when loaded as well as rotating shafts, a disc coupling coupling, in which the sockets are located along the axis of the projections, is mounted on the hub with the possibility of limited angular rotation.

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FIG. -five