Inner woven rubber hoseAs a key auxiliary equipment in hydraulic systems, its importance is self-evident. In the modern industrial field, hydraulic systems are widely used in various industries such as engineering machinery, agricultural machinery, aerospace, shipbuilding, etc., and internal braided rubber hoses are a component of these systems. It connects various hydraulic components to achieve the transmission of hydraulic power, and can also withstand the transportation tasks of high-pressure media such as water, gas, and oil. This article will explore the structural characteristics, application scenarios, and selection points of internal braided rubber hoses, providing readers with reference.

1、 Structure and Characteristics

Inner woven rubber hoses are usually composed of three parts: an inner rubber layer, a reinforcement layer, and an outer rubber layer. The inner rubber layer directly contacts the conveying medium, so it needs to have excellent oil resistance, corrosion resistance, and high temperature resistance. The reinforcement layer is usually woven from high-strength fibers or steel wires, responsible for withstanding the impact of high-pressure media and ensuring that the hose will not rupture or deform in high-pressure environments. The outer rubber layer plays a protective role to prevent the external environment from eroding the hose, and at the same time enhances the wear resistance and anti-aging performance of the hose.

The unique feature of the internally woven rubber hose lies in the weaving structure of its reinforcement layer. Compared with traditional winding structures, woven structures can provide higher strength and flexibility, suitable for frequent bending and twisting under dynamic working conditions. In addition, braided rubber hoses have stronger pressure bearing capacity and can meet higher pressure work requirements.

2、 Application scenarios

The application range of internally woven rubber hoses is very wide, covering almost all fields that require hydraulic transmission. In construction machinery, hydraulic systems of excavators, loaders, cranes and other equipment cannot do without internal braided rubber hoses. When these devices are in operation, the hydraulic system needs to operate frequently, and the rubber hose not only needs to withstand high pressure, but also dynamic bending and vibration, so high performance requirements are placed on the rubber hose.

For example, in the field of agricultural machinery, the hydraulic systems of tractors, harvesters, and other equipment also rely on internally woven rubber hoses. Compared with construction machinery, the working environment of agricultural machinery is more harsh. Rubber hoses need to withstand the erosion of corrosive media such as mud and pesticides, and also have good weather resistance to adapt to the changing outdoor climate conditions.

3、 Key selection points

Choosing the appropriate rubber hose is the key to ensuring the safe and reliable operation of the hydraulic system. When selecting, it is necessary to consider the following aspects comprehensively:

1. Working pressure: The rated working pressure of the hose needs to be higher than the working pressure of the system and leave a certain safety margin. For example, if the maximum working pressure of the system is 25MPa, it is recommended to choose a rubber hose with a rated pressure of 30MPa or above.

2. Media compatibility: Different media have different material requirements for the inner layer of the rubber hose. When conveying hydraulic oil, nitrile rubber (NBR) inner layer is usually used; When transporting fuel or chemical solvents, an inner layer of fluororubber (FKM) or hydrogenated nitrile rubber (HNBR) may be required.

3. Temperature range: The hose needs to adapt to the operating temperature range of the system. In high temperature environments, rubber hose materials should have good heat resistance; In low-temperature environments, it is necessary to ensure that the hose does not lose its flexibility due to hardening.

4. Dynamic performance: For application scenarios that require frequent bending or vibration, rubber hoses with good flexibility and strong fatigue resistance should be selected. Braided rubber hoses are usually more suitable for dynamic working conditions than wrapped rubber hoses.

5. Environmental factors: Rubber hoses used outdoors need to have properties such as UV resistance and ozone resistance; Rubber hoses used in corrosive environments require additional protective measures, such as covering them with a stainless steel braided layer.

As the "blood vessel" in hydraulic systems, the performance of braided rubber hoses directly affects the safety and reliability of the entire system. With the continuous development of industrial technology, the materials, structures, and manufacturing processes of rubber hoses are also constantly innovating. For users, understanding the technical characteristics of rubber hoses, mastering the correct selection and usage methods, is the key to ensuring the efficient operation of hydraulic systems.