How to choose a suitable agricultural machinery cylinder for agricultural machinery

With the continuous advancement of agricultural mechanization, hydraulic systems have become an indispensable core part of modern agricultural machinery. As a key component in the hydraulic system, the hydraulic cylinder undertakes the important task of converting hydraulic energy into mechanical energy, which directly affects the operating efficiency, stability and service life of agricultural machinery. Therefore, how to choose a suitable agricultural machinery cylinder is the key to ensure the good performance of agricultural machinery and continuous efficient operation. Choosing a suitable hydraulic cylinder is not only to ensure that agricultural machinery can operate efficiently and stably, but also to reduce the failure rate and maintenance costs.

Basic knowledge of agricultural machinery cylinder

Before discussing how to choose a suitable hydraulic cylinder for agricultural machinery, we need to understand the basic working principle and composition of the hydraulic cylinder. The hydraulic cylinder is the driving device of the hydraulic system, which mainly drives the piston to move linearly through the pressure of the hydraulic oil to realize the operation of the mechanical parts. Hydraulic cylinders are widely used in various agricultural machinery, such as tractors, combine harvesters, seeders, tillers, etc. Almost all heavy agricultural equipment has hydraulic cylinders.

1. Working principle of hydraulic cylinder

The working principle of hydraulic cylinder is to use the hydraulic oil in the hydraulic system to push the piston rod to move under a specific pressure, thereby converting it into mechanical energy and pushing the working parts of agricultural machinery to complete the specified operation. Hydraulic cylinders can be divided into single-acting hydraulic cylinders and double-acting hydraulic cylinders according to different work requirements.

Single-acting hydraulic cylinder: This hydraulic cylinder is driven by hydraulic pressure in only one direction, and the other direction is restored by external force or spring. It is suitable for some simple mechanical equipment, such as small tillers, seeders, etc.

Double-acting hydraulic cylinder: Double-acting hydraulic cylinder can be controlled by hydraulic oil in both directions, so it is more flexible and suitable for high-load and high-frequency agricultural machinery, such as tractors, combine harvesters, etc.

2. Components of hydraulic cylinder

The basic components of hydraulic cylinders include cylinder body, piston, piston rod, seal, etc., and each part has its unique function:

Cylinder body: The outer shell of the hydraulic cylinder, which bears the liquid pressure, is usually made of high-strength steel to ensure its pressure resistance and wear resistance.
Piston and piston rod: The piston is driven by the pressure of hydraulic oil, while the piston rod is the output end, carrying the working load of the hydraulic cylinder.
Seal: The seal of the hydraulic cylinder is used to prevent hydraulic oil leakage and ensure the stability and working efficiency of the hydraulic system.
Hydraulic oil: Hydraulic oil plays an important transmission role in the system, not only transmitting energy, but also lubricating and cooling.

How to choose a suitable hydraulic cylinder for agricultural machinery

Choosing a suitable hydraulic cylinder is the key to ensuring efficient and stable operation of agricultural machinery. In order to help agricultural machinery users select according to different operating requirements, the following points need special attention:

1. Clarify the working requirements of agricultural machinery

Before selecting a hydraulic cylinder, it is necessary to clarify the working requirements of agricultural machinery, including operating intensity, operating frequency, operating load, etc. Different types of agricultural machinery have different requirements for hydraulic cylinders, and the selection must be judged according to the specific operating conditions of the agricultural machinery.

Working pressure: Working pressure is one of the important performance parameters of hydraulic cylinders. Different agricultural machinery has different operating intensities, and the required hydraulic cylinder pressure is also different. Heavy machinery, such as tractors and combine harvesters, have higher pressure requirements for hydraulic cylinders. Light machinery, such as seeders and tillers, have relatively lower pressure requirements.

Working frequency and load: For high-frequency and high-load agricultural machinery, hydraulic cylinders need to have better durability and stability. For example, for machinery such as harvesters and transporters that operate for a long time and at high intensity, the ability to withstand high loads should be considered when selecting hydraulic cylinders.

2. Select the specifications of hydraulic cylinders according to load requirements

When selecting hydraulic cylinders, it is also necessary to determine the specifications of hydraulic cylinders according to the load requirements of agricultural machinery. The specifications of hydraulic cylinders usually include two major parameters: piston diameter and stroke length.

Piston diameter: The piston diameter determines the load carried by the hydraulic cylinder. The larger the diameter, the greater the load carried by the hydraulic cylinder. In large agricultural machinery such as tractors and combine harvesters, hydraulic cylinders usually require larger piston diameters to cope with heavier workloads..

Stroke length: Stroke length is another key parameter of the hydraulic cylinder, which determines the working range of the hydraulic cylinder. Different agricultural machinery has different requirements for the working stroke of hydraulic cylinders. When choosing, the working space and working requirements of agricultural machinery should be considered to ensure that the stroke length is sufficient to meet the working needs of the machinery.

3. Consider the durability and environmental adaptability of the hydraulic cylinder

Agricultural machinery often operates in complex field environments and faces challenges from harsh environments such as different climates, humidity, and dust. Therefore, the hydraulic cylinder must have sufficient durability and adaptability. When purchasing, special attention should be paid to the sealing performance, dust and water resistance, and corrosion resistance of the hydraulic cylinder.

Dust and water resistance: When agricultural machinery is operating in the field, it often encounters pollutants such as dust, mud and water. The hydraulic cylinder needs to have good sealing and dust and water resistance to prevent external pollutants from entering the hydraulic system and causing failures.

Temperature adaptability: The climatic conditions in different regions vary greatly. The sealing materials of the hydraulic cylinder and the viscosity of the hydraulic oil may be affected by the temperature. Therefore, when purchasing, choose a hydraulic cylinder that can adapt to different temperature environments to ensure that it can work normally under extremely cold or high temperature conditions.

4. Maintenance and convenience of hydraulic cylinders: Maintenance of hydraulic cylinders is the key to ensure their long-term stable operation. In order to reduce maintenance costs and downtime, the design of hydraulic cylinders should be as convenient as possible for disassembly, cleaning, seal replacement and other operations. Therefore, when choosing a hydraulic cylinder, the convenience of maintenance and maintenance is one of the factors to be considered.

5. Choose a reliable hydraulic cylinder supplier: It is also crucial to choose a high-quality hydraulic cylinder supplier. Reliable suppliers can provide hydraulic cylinders that meet industry standards and have a strong after-sales service system to ensure that they can be quickly repaired and replaced when hydraulic cylinders fail. High-quality after-sales service can greatly reduce the cost and downtime of agricultural machinery maintenance and improve the efficiency of machinery use.

Common misunderstandings in hydraulic cylinder selection

1. Ignoring the matching of hydraulic cylinders and agricultural machinery: Some users may pay too much attention to price or appearance and ignore the matching of hydraulic cylinders and agricultural machinery. If the working pressure, load capacity, stroke length and other parameters of the hydraulic cylinder do not match the needs of agricultural machinery, it will cause low work efficiency and even mechanical failure.

2. Over-focusing on price and ignoring quality: Although price is an important factor in choosing a hydraulic cylinder, quality is the decisive factor affecting the performance and service life of the hydraulic cylinder. Low-priced hydraulic cylinders often have problems such as poor durability and poor sealing, which may cause frequent failures of agricultural machinery. When choosing a hydraulic cylinder, you should consider both price and quality to ensure the long-term stability of the hydraulic cylinder.