SU727896A1 - Clutch - Google Patents

Description

   one

The invention relates to mechanical engineering.

Known clutch clutches containing two coupling halves with, end cams, one of which is movable in the axial direction l (.

The disadvantages of these couplings are the big cams and the impossibility of starting and driving the shafts on the move when there is a large difference between the hoists.

A clutch is also known, which contains a driven and axially movable driven coupling halves with end cams, as well as an elastic element I.

The disadvantage of this clutch is that the driven half coupling does not have time to go up to the angular velocity of the leading half coupling, and & what they wear

cams. In addition, in the included clutch there are large loads on the shafts and supports, which limits its service life.,

In order to increase the service life, the proposed coupling is equipped with an axially movable shaft with radial guides, two-arm levers and inertial masses, while the half coupling coupling is housed in the rod f: H pivotally connected to one arm of the levers, the inertial masses are installed in the radial guides and connected hinged with the other arm of the levers, and the elastic element is made in vvde installed on the leading coupling half and spring-loaded relatively its cup, the end of which is in contact with the inertial masses.

FIG. 1 shows the proposed coupling at the time of inclusion; in fig. 2 - the same after switching on, the Coupling is sorted from the fixed driving device 1c by cams a, rigidly connected to the shaft 2, and the moving driven dolomufta. 3 with cams b. The rod 4 is placed with the possibility of axial movement in the bore of the shaft 5. The rod 4

has two fixed positions corresponding to the disabled state; Clutch (extreme right position) and state During and after clutch engagement (extreme left position). The movable coupling half 3 is spring-loaded in the axis & OU direction in cTqpony from the fixed coupling half 1 by the spring 6. Half-half and 3 are placed with axial movement in the hole 7 of the rod 4, on the rod 4 there is a rigidly connected bracket 8 with radial guide slots 9, In the slots 9, inertial masses are installed in the form of sliders 10. The sliders are filled with bevels 11 and sections 12 parallel to the axis of the coupling 12. The stem 4 is also equipped with two shoulders 13 levers fixed to it by axes 14. On the arms of the levers 13 Longitudinal grooves 15 and . sixteen,. in which axles 17 and 18 are placed, the linking levers with sliders 10 and movable coupling half 3, respectively.

On the outer surface of the coupling half 1 with the possibility of axial movement there is an elastic atement in the form of a glass 19 of conical shape .. The glass 19 is spring-loaded to the shoulder 20 by a spring 21, pressed by an adjusting nut 22. On the glass 19, the board 2.3 is made.

The device works as follows .-

In the high state, the rod 4 is in the extreme right position (not shown in the figures). In this case, the glass 19 rests on the flange 2O of the half-coupling 1, the end of the half-coupling 3 in Tojpeu has openings 7, and between the bevels of 11 sliders and the bezel.3 of the bowl 19 there is a guaranteed gap.

When the clutch is turned on, the rod 4 is moved to the leftmost position. When,. This board 23 cups 19 rests on bevels of 11 sliders. At the same time, the compression of spring 21 comes down to this prot

The friction arising at the contact of the cup 19 and the sliders 10 begins to unwind the coupling half 3. Due to the centrifugal forces of the inertia. The masses (crawlers 10) will tend to separate from the center of the axis. When vedukuyu half coupling speed is reached, the rotational length of the half coupling half (the relative velocities are zero)

13 of the half-coupling 3 moves towards the half-coupling 1 and the cams engage with the cams b. A bead 23 of cup 19, abutted against the portions 12 of the sliders, fixes the clutch in the on state.

The protrusion size of the LZunovs, 10 at the end of the bracket 8 is chosen such that after coupling between the cup 19 and the end of the bracket 8 there is a gap (to exclude axial loads on the shaft bearing).

The clutch is disengaged by moving the rod 4 to the far right position.

Adjusting the clutch for activation at a given number of revolutions of the driven half-coupling is carried out by rotating the adjusting nut 22, and the cup 19 acts on the sliders 10 with different forces.

The invention allows for a shock-free coupling engagement, which reduces cam wear and increases its service life. Axial load on shaft bearings is also excluded.

Claims (1)

1. V. Polkov. S ,, I. Barbash. Couplings. L, Mechanical Engineering, 1973, p. 139, fig. 104a. 2 USSR Author's Certificate No. 533770, class „F 16 D 11/04, 1976 ..