High/low-speed groove clutch friction plate

Abstract

The invention belongs to the technical field of vehicle gearboxes and relates to a clutch friction plate, in particular to a high/low-speed groove clutch friction plate. Spiral grooves are formed on a circular ring surface of the clutch friction plate along the circumferential direction in equal distance; through grooves are formed along the radial direction of the clutch friction plate in equal distance; semi-through grooves are formed along the radial direction of the clutch friction plate in equal distance; and the through grooves and the semi-through grooves are formed at intervals and are communicated with the spiral grooves. In the joint process, the clutch friction plate has a lubricating function, large-area dry friction of the friction plate is avoided, and wear of the friction plate is reduced; and during an empty load, radial flow of oil is accelerated, and the probability of forming a complete oil film is reduced, so that the clutch friction plate has the advantage of reducing the drag torque at low speed.

Description

technical field [0001] The invention belongs to the technical field of vehicle gearboxes, and relates to a clutch friction plate, in particular to a high-low speed groove clutch friction plate. Background technique [0002] In the prior art, a wet clutch is a device widely used in heavy-duty vehicle gearboxes to transmit and cut off torque. In order to increase the transmitted torque, it is usually composed of multiple plates. With the increase of engine speed and gearbox power density of heavy-duty vehicles, the speed difference between the friction plate and the separation steel plate of the wet clutch increases, resulting in greater belt-disc torque and power loss, which affects the efficiency of the transmission system ; Long-term operation is more likely to increase the temperature rise of the lubricating oil, and the lubricating oil will decompose and deteriorate. Tests have proved that due to the free gap between the clutch friction plate and the separation plate, wi...

AI Technical Summary

Problems solved by technology

With the increase of engine speed and gearbox power density of heavy-duty vehicles, the speed difference between the friction plate and the separation steel plate of the wet clutch increases, resulting in greater belt-disc torque and power loss, which affects the efficiency of the transmission system ; Long-term operation is more likely to increase the temperature rise of the lubricating oil, and the lubricating oil will decompose and deteriorate

Tests have proved that due to the free gap between the clutch friction plate and the separation plate, with the further increase of the speed difference, the friction plate and the separation plate will vibrate violently, causing mutual collision friction, resulting in belt row torque and power loss The sharp rise of the oil will seriously affect the transmission efficiency and the life of the lubricating oil, and even cause the vibration and noise inside the gearbox

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