SU63775A1 - Centrifugal clutch - Google Patents

Description

The invention relates to centrifugal clutches in which, in order to eliminate their overheating, the sliding friction is replaced by rolling friction.

In prior art couplings of this type, centrifugal weights are provided with a roller rolling on the inner cylindrical surface of a drum mounted on a driven shaft. The disadvantage of this type of coupling is the impossibility of controlling the grip force during operation and the need to use devices for fixing the switching off organs.

The proposed coupling ensures the stability of the off position by balancing the centrifugal forces with the help of forcibly shifted additional loads that allow arbitrary installation on both sides of the center of oscillation of the main loads of the coupling. The latter are made in the form of rocker frames mounted on the drive shaft and can be rotated in the plane of rotation of the coupling.

In FIG. 1 and 2 depict a side view of the coupling in two projections with partial cuts.

At the end of the drive shaft 1, the sleeve 2 is fixed on the slots, on the outer surface of which

There is a screw cutting large schaga. On 2 on bolts 10, main clutch weights are rotatably mounted, made in the form of frames (rocker arms) 9. Each frame has a guide 11, along which additional weight 7 can be moved, which is pivotally connected by a link 12 with a shoulder 13 of the sleeve 3, which is worn on a screw bushing 2

At one end of each frame 9 there is a roller 6 rolling on the inner surface of the rim of a pulley 4 fixed to the end of the driven shaft 5. The pulley 4 has on its inner side two cam lugs 8 with which the rollers 6 of the frames 9 interact.

If, moving the yoke 3 along the sleeve 2, rearrange the weights 7 on the short ends of the frames 9 opposite to the rollers 6, then the centrifugal force developed by the weights 7 when the driving shaft 1 rotates will balance the centrifugal force developed during the rotation of the main weights (frames 9 s rollers 6), as a result of which rollers 6 will freely roll over cam protrusions 8 of shkivka 4, do not press them and together rocking movements of frames 9 on bolts 10 without transmitting rotation to shaft 5. Such position of weights 7

corresponds to the off position of the coupling.

If, using the cage 3, the weights 7 are moved along the guide 11 towards the rollers 6 of the frames 9, then when the shaft 1 rotates, the centrifugal forces of the loads 7 and the frames 9 with the rollers 6 will fold and press the rollers 6 to the protrusions 8 of the pulley 4, as a result 6 will not be able to run onto the protrusions 8 and roll over them, but will carry along the driven shaft 5.

This position of the load 7 corresponds to the included clutch.

In the event of an overload of the driven shaft, the amount of pressure that presses the rollers 6 to the protrusions 8 of the pulley under the action of centrifugal force will be insufficient and the rollers will again roll over the protrusions 8, automatically turning off the clutch. This centrifugal clutch can be used for drive to aircraft engine superchargers and in all high-speed drives in general.

Subject invention

Claims (2)

1. Coupling coupling provided with centrifugal weights for engaging via a roller interacting with a protrusion on the driven part, characterized in that the roller and the forcibly moved load 7 are located on a rotating frame 9 mounted on the drive shaft. 2. The form of the coupling according to claim 1, characterized in that for shifting the load 7, the holder 3 is applied, which moves along the screw cutting of the sleeve 2 on the drive shaft. FIG. one