At present, it is widely used in the automobile is the friction clutch which is pressed by the spring. The car in the process of moving to and keep the power transfer, and interrupts power just temporary needs, so in the form of active and driven parts in long-term binding state, when the driver depresses the clutch pedal, through the mechanical transmission, let the driven part and the main part is separated.
Clutch of automobile transmission system in direct contact with the engine parts and is responsible for the power and drive system of cutting and binding, so it can ensure the vehicle starting a smooth start, also can ensure shift smoothly, but also to prevent the transmission system overload. Today we come to a simple understanding of the work principle of the clutch, as well as the common clutch.
Clutch is a transmission mechanism with active part and the driven part, the two parts can be temporary separation can also slowly with, and in the process of transmission and may rotate relatively, so the driving part of the clutch and the driven will rely on contact friction to transmit torque, or is the use of friction to the pressing force, or is the use of liquid as the medium of transmission, or is the use of magnetic transmission way to transfer torque.
Friction clutch, with the number of friction surface, the form of the spring and the installation position, and the operating mechanism of the different, there are many different. According to the number of driven disc is divided into single disc clutch and double disc clutch. The single disc clutch is mainly used in the car and light truck, while the double clutch transmission torque is larger, so the main use of the medium and heavy vehicles. In accordance with the structure of the spring of the spring is divided into a coil spring clutch and diaphragm spring clutch.
Each clutch is made up of the following parts:
(1) active part: flywheel, clutch cover plate, etc.;
(2) the driven part: the driven plate, the driven shaft (i.e., the first shaft of the transmission);
(3) the pressing part: the pressing spring;
(4) the operating mechanism: the separation lever, the separation lever supporting column, the swinging pin, the separation sleeve, the separation bearing, the clutch pedal, etc..
Prior to the analysis of the clutch working process, the following common nouns:
Free space: clutch engagement, the separation of the front end of the bearing and the separation of the gap between the end of the lever.
The separation gap: clutch, flywheel and pressure plate surface and the gap between the surface and driven disc.
Clutch pedal free stroke: from the clutch pedal to the elimination of free space corresponding to the pedal stroke is free travel.
Clutch pedal work stroke: eliminate free clearance, continue to step on the clutch pedal, will produce a separation gap, the process of the corresponding pedal stroke is the work schedule.
The working process of the clutch can be divided into the separation process and the bonding process.
In the process of separation, the clutch pedal is stepped down, and the free clearance of the clutch is eliminated in the free stroke.
In the process of bonding and gradually release the clutch pedal, pressure plate in the spring is compressed under the action of moving forward. The first step is to eliminate the gap separation, and in the disc, the driven disc and the flywheel surface role enough pressing force; after the separation bearing in under the action of the reset spring backward move, produce free clearance clutch engagement,. |
