Anti-seismic and pressure-resistant integrated anti-loosening flange nut with washer

Structural Features

      Flange Design: This nut is equipped with a flange, which increases the contact area between the nut and the connected component. Compared with ordinary nuts, it can distribute pressure more evenly, reduce the pressure on the surface of the connected component, and lower the risk of deformation and damage caused by pressure concentration, especially suitable for occasions with high pressure resistance requirements.

  Washer Structure: It is equipped with a washer inside or below, usually made of elastic materials such as spring washers or rubber washers. The function of the washer is to provide a certain elastic pre-tightening force after the nut is tightened. When the nut is subjected to vibration or impact, the washer can absorb part of the energy and reduce the possibility of the nut loosening, playing the role of anti-seismic and anti-loosening.

   Anti-loosening Mechanism: In addition to the elastic effect of the washer, some anti-seismic and pressure-resistant integrated anti-loosening flange nuts with washers also adopt special thread designs or anti-loosening structures. For example, fine-threaded threads are used to increase friction, or special tooth shapes or protrusions are set on the mating surface of the nut and the bolt, so that the nut can form a tighter engagement with the bolt after being tightened, preventing relative rotation and further improving the anti-loosening performance.

Working Principle

Anti-seismic Principle: In a vibrating environment, equipment or structures will generate periodic vibrations. Due to the elasticity of the washer, the nut can adapt to this vibration within a certain range and reduce the relative displacement between the nut and the bolt caused by vibration. At the same time, the special anti-loosening structure can effectively prevent the nut from gradually loosening during the vibration process, maintaining the tightness of the connection and thus achieving the anti-seismic function.

Pressure-resistant Principle: The increased contact area of the flange distributes the pressure evenly on the surface of the connected component, avoiding excessive local pressure. When subjected to a large axial pressure, the materials of the nut and the washer can withstand and transmit the pressure, and the elasticity of the washer can buffer the pressure impact to a certain extent, preventing the nut and the connected component from being damaged due to excessive pressure and achieving good pressure-resistant performance.

Application Fields

Construction Engineering: In the structural connections of buildings, such as the connections of steel structure frames and the connections between bridge piers and girders, it needs to withstand large pressures and seismic forces. The anti-seismic and pressure-resistant integrated anti-loosening flange nut with washer can ensure the reliability of the connection and improve the safety of buildings in natural disasters such as earthquakes.

Mechanical Manufacturing: Various heavy mechanical equipment, such as mining machinery and construction machinery, will generate large vibrations and impact forces during the working process and also need to bear heavy loads. Using this kind of nut can ensure the firm connection of the components of the equipment, prevent loosening and damage caused by vibration and pressure, and extend the service life of the equipment.

Power Equipment: Power generation equipment, transmission towers and other power facilities need to withstand their own weight, wind pressure and other pressures during operation, and also need to deal with possible seismic impacts. The anti-seismic and pressure-resistant integrated anti-loosening flange nut with washer can be used in the connection parts of these facilities to ensure the stable operation of the power equipment and reduce safety accidents caused by loose connections.

Aerospace: In aspects such as the structural connections of aircraft and the installation of engines, the requirements for the anti-seismic and pressure-resistant performance of nuts are extremely high. This kind of nut can meet the strict requirements of the aerospace field for the reliability and safety of components, ensuring that it can withstand various complex mechanical environments during flight without loosening and damage.

Material Selection

Nut Body Material: Usually, high-strength metal materials such as alloy steel and stainless steel are used. These materials have high strength and hardness, can withstand large pressures and tensile forces, and also have good corrosion resistance, suitable for different working environments.

Washer Material: According to specific application requirements, materials such as spring steel, rubber, and nylon can be selected for the washer. The spring steel washer has high elasticity and strength and can provide a large pre-tightening force; the rubber washer has good shock absorption performance and sealing performance; the nylon washer has a low friction coefficient and good wear resistance, and can be selected according to the actual situation.

Specifications and Models