RU1814707C - Centrifugal friction clutch - Google Patents

Abstract

Usage: for transmitting rotation from one shaft to another in a certain range of rotation frequencies. SUMMARY OF THE INVENTION: the coupling comprises a leading 1 and a driven 3 half-couplings interacting with each other by means of spring-loaded spring pads 4 mounted on the protrusions 2 of the leading half-coupling 1. During acceleration of the leading floor

Description

 No. /

coupling 1, the interaction of the block with the protrusions 2 is carried out at a point located in front of its center of gravity in the direction of rotation, at the contact point

blocks with protrusions of the driving coupling half 1, attachment points to the spring blocks 6 and centers of gravity of the blocks 4 are located in a plane passing through the axis of the protrusions 2. 3 ill.

The invention relates to mechanical engineering, in particular to centrifugal couplings.

The purpose of the invention is to increase durability by reducing wear on the pads during power-up and uneven loading.

The goal is achieved by the fact that the guide protrusions of the leading coupling half are cylindrical in shape, and the contact lines of the guide protrusions with the blocks, the centers of gravity of the blocks and the points of attachment of the springs to the blocks are located in a plane passing through the axis of the guide protrusions. :

Figure 1 shows a centrifugal clutch, a longitudinal section; figure 2 is a section aa in figure 1; Fig. 3 is a section B-B in Fig. 2, showing the points of application of force to the pads.

The centrifugal friction clutch comprises a leading coupling half 1 with radially arranged guide protrusions 2, covering its driven coupling half 3, pads 4 with friction linings 5 and springs 6. The guide protrusions 2 are made of cylindrical shape. The pads 4 are mounted on the guiding protrusions 2 in a loose fit and are able to radially move and adhere to the surface 7 of the driven half-coupling 3 under the action of centrifugal forces. The pads 4 are spring-loaded in the direction of the coupling axis by means of springs 6 interacting with the ribs 8 at the mutually reversed ends of the pads. The center of gravity 9 of the shoe 4 and the contact line 10 of the guide protrusion 2 and the forming hole 11 of the shoe are located in a plane passing through the center axis of the guide protrusions. The axes of the springs 6, fixed with holes 21 on the blocks, are also located in a plane passing through the axes of the guide protrusions.

The coupling operates as follows.

When the revolutions of the leading coupling half 1 increase, the pads 4 under the action of centrifugal forces move in the radial direction along the guide protrusions 2, the springs 6 are stretched, slowing down the beginning

coupling the pads to the surface 7 of the driven coupling half 3 and at the same time keep the block from turning at the moment of coupling. The guide protrusions 2 transmit force to the shoe in a line at point 10, which is located in front of the center of gravity of the shoe at point 9 in the direction of rotation of the driven coupling half.

The adhesion of the pads 4 with the surface 7

the driven half-coupling occurs when the leading half-coupling reaches such a rotation speed when the centrifugal force of the block overcomes the force of the springs 6. At this moment, the coupling transmits the minimum

torque.

When the driving coupling half 1 reaches its maximum speed, the coupling transmits the highest torque.

With a sharp increase in the load on the driven coupling half 3, the blocks 4 slip relative to the surface 7 of the driven coupling half, followed by adhesion after stabilizing the load, while the block is in a stable position, without solutions and yaw, relative to the surface 7 of the driven coupling half.

Due to the stable position of the pads 4 when you turn on and when the load changes, the wear of the friction linings is reduced

and increased clutch durability.

Claims (1)

The claims A centrifugal friction clutch comprising a leading coupling half with radially spaced guide protrusions, covering its driven coupling half, and centrifugal blocks mounted on the guide protrusions radial, displaced and spring-loaded in the direction of the axis of the clutch by means of a spring mounted on the reciprocal ends of the blocks, characterized in that, in order to increase longevity due to reduced wear of the pads during switching-on and uneven loading, the guide protrusions on the leading half-coupling are made of cylindrical shape, and the contact lines of the guides are you. stupas with pads, the centers of gravity are spaced in a plane passing through and the points of attachment of the springs to the pads are cut from the axis of the guide protrusions, FIG. 2 1 814 707 56 FIG. 3  Direction of indoor pads