With the tractor clutch failure, it is better to grasp the correct use of clutch method, prolong the life

Release time：2023-05-23    Click：319

The clutch is installed after the engine and before the transmission, the basic function is to transfer and cut off the power, the main function is to transfer the power from the engine to the transmission; The second is to ensure that the engine starts and the tractor starts smoothly; Three is to ensure that the tractor running shift smooth or temporary stop; Four is to prevent transmission system overload; Five is double acting clutch also plays the role of transmitting or cutting off power output power.

Clutch is one of the most frequent failures on domestic large and medium horsepower tractors. According to the market research of Agricultural Machinery Guide, the annual average failure rate of large and medium horsepower tractors within the three packages in 2020 exceeds 150%. Among them, the annual average failure rate of high-horsepower tractors is higher than 260% in the three contract period. Among the system failures of large and medium horsepower wheeled tractors, the failure rate of clutch system is nearly 17%, ranking the fourth. The failure rate of clutch system is as high as 28%, ranking fifth among all system failures of high-horsepower wheeled tractors.

In the clutch fault, in addition to the quality problems and design problems of the clutch itself, a large part of the fault is related to improper operation, today we will introduce the correct operation and use of clutch.

One is nothing to step on the clutch, not half step clutch. Some tractor operators habitually put their feet on the pedal away from the whole device, this habit is not good, it is easy to damage the clutch. When the clutch of the tractor is working normally, the disc spring will press the friction plate tightly on the engine flywheel. The clutch is in the pressing and engaging state, and the friction plate is not sliding. When the clutch needs to be separated, by stepping on the clutch pedal to achieve, if in the use of the tractor is always half step clutch, long time refers to the foot on the clutch pedal, so that the clutch is often in a half engaged, and separated state, make the clutch in the operation in a half slip state, accelerate the clutch friction plate, pressure plate wear, And make the clutch transmission torque ability is reduced, it is easy to cause the clutch slip, burning friction plate and other phenomena, serious will also make the clutch pressure plate, flywheel end face ablation strain, clutch disc spring annealing and other failures. When driving a tractor, in addition to starting, shifting and low speed braking need to step on the clutch pedal, the other time generally do not need to step on the clutch pedal, do not always put your foot on the clutch pedal.

The second is the correct operation when the tractor starts. When the tractor starts, it is necessary to step down the clutch gear, step down the clutch pedal action should be fast when stepping on the clutch, and all the way to the end, so that the clutch can be completely separated, and then gear, gear began to loose the clutch pedal; When the clutch pedal is loose, press the key operation of "first fast and then slow", that is, the free travel before the device has not been engaged can be lifted slightly faster, when the clutch begins to engage the semi-linkage (at this time the engine sound has changed), it should stop a little, and then slowly lift the clutch pedal (at the same time gradually the fuel door), that is to say, from the semi-linkage to the complete combination of the process, the pedal to slowly lift, Make the clutch engage smoothly, and slowly lift the clutch pedal at the same time, according to the size of the engine resistance gradually step down the accelerator pedal, the operation of the accelerator should be smooth and appropriate, so that the tractor starts smoothly. When the clutch is fully engaged and the tractor starts smoothly, the foot should be quickly removed from the pedal and placed under the pedal. When the clutch is not used in the tractor work, it is strictly prohibited to foot on the clutch pedal.

The third is the correct operation of the tractor when shifting gear. At present, the gearbox of the tractor is still mostly engaged gear shifting structure, advocating the use of two-foot clutch shifting method for gear shifting, which can make the shift smoother, reduce the gear shifting mechanism of the gearbox and the wear of the clutch. The specific operation method of the two-foot clutch shift is as follows: when the clutch pedal is pressed down, the gear shift lever is shifted to a higher gear; When reducing gear, the first foot steps down the clutch pedal and pushes the gear shift lever into neutral, and then lifts the clutch pedal, and gives a foot of empty oil according to the speed, so that the engine speed increases, and then steps down the clutch pedal again, and pushes the gear shift lever into low gear.

Four is the correct use of clutch in braking. In the use of tractors, the clutch pedal is not required for braking in other cases except for the low speed braking stop below 10km/h. When the tractor stops braking at low speed, the clutch pedal is mainly to prevent the engine from stalling. At this time, the correct control method is to step on the brake pedal first, and then step on the clutch pedal, so that the tractor stops smoothly; When the tractor braking at medium and high speed, stepping on the clutch pedal not only does not help braking, but also may bring dangers to driving safety.

Fifth, the clutch should pay attention to safety. It is strictly prohibited to take off gear when going uphill. It is strictly prohibited to slide down the clutch in neutral when going downhill; It is strictly prohibited to lift the clutch pedal after hanging the gear; In the soft road, muddy road and snow and ice road, the driving wheel is easy to slip, at this time is strictly prohibited to use the refueling door, the method of lifting the clutch pedal; There is also the use of the clutch to reduce the number of separation and engagement, the number of semi-linkage.