The full hydraulic steering system is mainly used for off-road wheeled mobile vehicles with a speed of not more than 60 kilometers per hour. Because the full hydraulic steering system has the advantages of light and flexible operation, simple structure, low price, and convenient installation and arrangement of the whole machine, the current medium and large horsepower tractors The steering system basically adopts a full hydraulic steering system. The full hydraulic steering system on the tractor mainly includes several major components such as full hydraulic steering gear, constant flow overflow pump, steering cylinder, steering oil pot, and connecting oil pipes. The full hydraulic steering gear is currently the cycloid type widely used at home and abroad. The full hydraulic steering gear is mainly used to control the action of the steering hydraulic cylinder to realize hydraulic steering. When the constant flow relief pump stops supplying oil, manual steering and full hydraulic steering are realized. The actuator is fixed on the steering bracket by screws, and is mainly composed of a steering valve and a cycloidal gear motor. In the actual use of tractors, it is a common fault that the hydraulic steering system enters air and cannot discharge air, which will cause a series of steering problems. Due to the compressibility of air, when air enters the hydraulic oil, it will affect the performance of the hydraulic oil. , will also affect the normal operation of the hydraulic steering system, the main hazards are as follows:
1. Due to the compressibility of air, after the air enters the hydraulic oil, the compressibility of the hydraulic oil is increased, and the steering cylinder will have errors during the action, which will affect the stability of the hydraulic steering;
2. After the air is sucked into the hydraulic oil, the air will generate air bubbles and break under high pressure, which will cause vibration and noise in the hydraulic oil circuit, and the action response of the steering cylinder will be reduced and the response will be sluggish, which will affect the steering accuracy.
3. After the air is sucked into the hydraulic oil, a lot of heat will be released when the air in the pressure oil is compressed, which will easily lead to high temperature and deterioration of the hydraulic oil.
4. After the air is sucked into the hydraulic oil, the air bubbles generated will destroy the oil film, causing damage to the sliding surface, cavitation of hydraulic components, etc., resulting in pitting corrosive wear on the metal surface
5. The entry of air into the hydraulic oil will reduce the volumetric efficiency of the hydraulic system, increase the energy loss, and reduce the transmission efficiency.
In practice, once the hydraulic steering system enters the air or the air exhaust is not clean, the following specific failures often occur:
1. The steering wheel swings seriously, the direction floats at high speed, and the direction is not well controlled. When there is air in the steering cylinder, it will cause the steering wheel to swing left and right during driving, which is not obvious at low speed, but when the tractor is traveling at high speed, the direction will appear. The phenomenon of fluttering, poor control of the direction, and the feeling that the direction is going to be out of control.
2. Turn to the oil filling port of the oil pot to spill oil. After the air is sucked into the hydraulic oil, the air will generate air bubbles and break under high pressure to make the oil become foamy. Spill at the fuel filler cap.
3. There are irregular noises when the steering system is working. After the air is sucked into the hydraulic oil, the air will generate air bubbles and break under the action of high pressure, which will cause vibration and noise in the hydraulic oil circuit, so there will be irregular noises, and the action of the steering cylinder will be reduced and responsive. Hysteresis affects steering accuracy.
This is the end of the knowledge sharing about the hydraulic steering system of the tractor. If you want to buy related hydraulic products, you can go to the official website of Hanjiu Technology Co., Ltd. Hanjiu has been engaged in the production of hydraulic products for more than ten years, and has accumulated rich experience in this field. The hydraulic products produced by Hanjiu have a complete range, good quality and low price, which can perfectly replace the products of big-name companies such as Danfoss. According to the feedback from customers of Hanjiu, the hydraulic products produced by Hanjiu have a long enough service life. In addition, Hanjiu adheres to the business philosophy of "customer first, service first", and always puts the needs and experience of customers in the first place. At Hanjiu, you can get the most meticulous and thoughtful service. Customized hydraulic products for customer needs, as long as you want, Hanjiu can help you do it! Hanjiu is looking forward to cooperating with you.
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