Agricultural machinery
When the tractor is running, if it encounters sudden brake failure, which poses a great threat to driving safety, the driver should immediately take the following seven first aid methods:
1. When braking failure occurs, it should be slowed down immediately, the implementation of engine drag braking, and the use of steering to avoid obstacles as far as possible, which is a simple, fast and effective method.
2. Check whether there are obstacles on the roadside, which can help slow down or slow down and stop in a wide area.
3. If there is no available terrain, you should quickly lift the throttle, thereby reducing to a low gear, using the sudden increase in the transmission ratio and the drag effect of the engine to contain the car.
4. If you are driving a hydraulic brake tractor, you can continuously step on the brake pedal and use the "spot brake" method to produce the braking effect due to the accumulation of braking force.
5. On the basis of engine drag braking, the speed decreases, then you can use shift or tractor parking brake to further slow down, and eventually the tractor will drive to the side of the road to stop.
6. If you feel that the speed of the tractor is still fast, you can gradually tighten the parking brake joystick to gradually prevent the rotation of the transmission parts, and pay attention to it when pulling, not to tighten it once, so as to avoid the brake disc "holding" and losing all braking ability.
7. Especially under the long slope, if the above measures are still unable to effectively control the vehicle, and the accident is unavoidable, the car should be resolutely leaned against the road side, and the collision between the side of the car and trees or other obstacles should be stopped, in order to minimize the incident and reduce losses.
Agricultural machinery drivers should especially remember that when there is brake failure, regardless of whether the speed is reduced or not, manipulating the steering wheel, controlling the direction of travel, avoiding the crash is an emergency measure, only when there is no crash temporarily, it is possible to spare the hand to grab gear and pull the parking brake lever, that is, to ensure that the vehicle is safely stopped.
Inner ring with flange
Rolling element
The rolling element is the core element in the rolling bearing, because of its existence, there is rolling friction between the relative moving surfaces.
The types of rolling bodies include ball, cylindrical roller, conical roller, needle roller and so on
Bearings are divided into:
(1) Ball bearing - the rolling body is a ball, such as: deep groove ball bearings, aligning ball bearings, angular contact ball bearings, outer spherical bearings
(2) Cylindrical roller bearings - the rolling body is a cylindrical roller, such as: cylindrical roller bearings, reasoning cylindrical roller bearings, roller bearings, series bearings
(3) Drum roller bearing - the rolling body is a drum roller, such as: aligning roller bearing
(4) tapered roller bearings - the rolling body is a tapered roller, such as: tapered roller bearings, thrust tapered roller bearings
(5) Needle roller bearing - the rolling body is a needle roller, the ratio of the length of the needle to the diameter is greater than 3, but the diameter is less than or equal to 5mm.
4. Cage
Bearing cage refers to a bearing part that partially encloses all or part of the rolling element and moves with it to isolate the rolling element, usually guiding the rolling element and keeping it in the bearing.
Main uses of cage:
Separate rolling element to reduce friction heat generated by bearing
The rolling elements are evenly spaced to optimize load distribution
Guide the rolling element in the unloaded area of the bearing
For separable bearings, the rolling element can be maintained as a whole when one of the bearing rings is installed or removed
The main types of cages are:
Stamped metal cages
Stamped metal cages (steel or brass sheets) are lightweight and can withstand high temperatures.
Machined metal cages
Machined metal cages are made of brass, steel or light alloys. It can withstand high speed, high temperature, high acceleration and high vibration.
When the tractor is running, if it encounters sudden brake failure, which poses a great threat to driving safety, the driver should immediately take the following seven first aid methods:
1. When braking failure occurs, it should be slowed down immediately, the implementation of engine drag braking, and the use of steering to avoid obstacles as far as possible, which is a simple, fast and effective method.
2. Check whether there are obstacles on the roadside, which can help slow down or slow down and stop in a wide area.
3. If there is no available terrain, you should quickly lift the throttle, thereby reducing to a low gear, using the sudden increase in the transmission ratio and the drag effect of the engine to contain the car.
4. If you are driving a hydraulic brake tractor, you can continuously step on the brake pedal and use the "spot brake" method to produce the braking effect due to the accumulation of braking force.
5. On the basis of engine drag braking, the speed decreases, then you can use shift or tractor parking brake to further slow down, and eventually the tractor will drive to the side of the road to stop.
6. If you feel that the speed of the tractor is still fast, you can gradually tighten the parking brake joystick to gradually prevent the rotation of the transmission parts, and pay attention to it when pulling, not to tighten it once, so as to avoid the brake disc "holding" and losing all braking ability.
7. Especially under the long slope, if the above measures are still unable to effectively control the vehicle, and the accident is unavoidable, the car should be resolutely leaned against the road side, and the collision between the side of the car and trees or other obstacles should be stopped, in order to minimize the incident and reduce losses.
Agricultural machinery drivers should especially remember that when there is brake failure, regardless of whether the speed is reduced or not, manipulating the steering wheel, controlling the direction of travel, avoiding the crash is an emergency measure, only when there is no crash temporarily, it is possible to spare the hand to grab gear and pull the parking brake lever, that is, to ensure that the vehicle is safely stopped.