Friction-type coupler

Abstract

The invention relates to a friction-type coupler which comprises a main transmission shaft (3), a friction plate (7), a clutch shell (5), an inner spline connecting sleeve (17) and a device, wherein the device positions the friction plate (7) in axial direction and is subjected to axial spring pressure; when the coupler is started, a friction block (25) is in contact friction with the radial inner surface of the clutch shell (5) under the action of centrifugal force to control the friction between the friction plate (7) and friction rings (6 and11) at the inner side surface of the clutch shell, and power transfer is realized; in overload, the friction plate and the friction rings have friction to cause temperature rise, liquid in an enclosed cavity (12) of the friction plate has temperature rise and expands to force the fraction plate to separate from the friction rings, and then a motor is separated from the load. The friction-type coupler has the advantages of light weight, stable connection, sensitive power transfer, great contact friction force and long-acting effect in use, and the surface temperature of the coupler can be controlled; the over-temperature safety hazard is eliminated thoroughly, and the couple is especially suitable for occasions with the high temperature safety requirement.

Description

technical field [0001] The invention relates to a coupling, in particular to a friction coupling. Background technique [0002] For mechanical and electrical equipment such as scraper machines and belt conveyors used in mines, hydraulic clutches or centrifugal friction clutches are mainly used in order to automatically connect the motor and reducer when starting, and automatically disconnect when overloaded. [0003] The hydraulic clutch is partially filled with a liquid medium in the inner cavity of the clutch. When the motor drives the clutch to rotate, the liquid medium impacts the turbine wheel blades of the clutch under the action of centrifugal force, thereby driving the output shaft to rotate. Since hydraulic clutches generally use oil or water as the force transmission medium, high temperatures are likely to occur during operation, causing oil or water to expand and boost pressure, resulting in the melting of the fusible plug set on the clutch housing, oil and water ...

AI Technical Summary

Problems solved by technology

However, during use, it was found that the rotation resistance of the fan blades was not enough to cause the rotation of the connecting disc to significantly lag behind the main drive shaft. When starting, the connecting disc and the main drive shaft were close to synchronous idling, resulting in the friction ring between the inclined surface of the outer circumference of the connecting disc and the inner surface of the clutch hoop. Insufficient contact friction and insufficient sensitivity of power transmission

Images