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With the deepening of isolation research and the development of isolation technology, nonlinear isolators suitable for various occasions have emerged. Laminated springs for the automotive industry are widely used in China. The principle is to use the dry friction between the steel plates to reduce the vibration and impact caused by the unevenness of the road. There are metal conical coil springs for the civil industry, as well as air springs.

During the entire deformation process of the wire rope shock mounts, sliding friction will occur between each wire rope, which consumes a large amount of energy and has a high equivalent damping ratio. Moreover, the wire rope anti vibration mounts exhibit nonlinear softening characteristics in a large deformation range, the stiffness decreases as the deformation increases, and the vibration isolation rate increases. Therefore, the good broadband isolation performance of the wire rope isolator for vibration damping is especially suitable for the application of vibration and shock environment isolation.

The wire rope shock mounts have only been developed in the last 30 years. Compared with the above-mentioned isolators, it has four distinct advantages:
①Nonlinear soft characteristics;
②Multi-directional isolation, high damping ratio;
③Corrosion, high and low temperature resistance;
④Compact structure and light weight.

At present, the common wire rope anti vibration mounts have several types of spiral, arch and ring. But in either case, they are made of stainless steel wire rope wound or bent. Their common advantage is the three-way protection of the equipment, reliable operation in high temperature and harsh environments, wide load range, unlimited storage period and service life. In terms of impact resistance, it can achieve maximum impact attenuation in a minimum space, and its vertical allowable deformation can reach 40~60% of the height of the vibration isolator. In foreign countries, they are used in the transportation of some equipment to replace the impact-resistant packaging of raw plastics and rubber. Rocket and missile transport vehicles also use it. In terms of ships, it passed the tests of light impact machines, heavy impact machines and floating impact platforms to meet the requirements of MIL-S-901 and MIL-STD-167. The wire rope isolator has excellent durability and fatigue. A vibration isolator with a diameter of 2.4 mm has been tested for up to 150 hours and seven million tests at 13 Hz and ±1.5 mm amplitude. The result is safe and sound.

For a 1.5mm wire rope isolators damping with a 1.5mm diameter, a sweep vibration test up to 10KHZ was performed, and the vibration isolation effect was 95%. This proves that the wire rope isolator for vibration damping can isolate small amplitude and structural noise. Wire rope anti vibration mounts are widely used in vibration and shock isolation of instruments, instruments, control boxes, etc., and some of the original rubber vibration isolators have been replaced by wire rope shock mounts.

Hoan is one of the leading wire rope isolator manufacturers in China, Welcome for enquiry.

Background technology of Quadcopter Vibration Isolator manufacture:

Quadcopter includes some special equipment which need stable environment in work engineering, such as inertial measurement device. Influenced by the external air resistance and its own power plant, the four-axis vehicle will generate vibration excitation during flight and transmit it to the specific equipment, which will produce greater vibration on the specific equipment.

The inertial measurement device is one of the core sensors of the four-axis vehicle. It is used to measure the angular velocity and acceleration of the Quadcopter body, and then to calculate the attitude of the Quadcopter. This ensures the safe navigation of the Quadcopter in the external environment. For inertial measurement devices, measurement accuracy is one of the most critical indicators. The noise caused by the vibration of the fuselage is an important factor affecting the measurement accuracy of the inertial measurement device.

The traditional quadcopter vibration isolation of the fixed inertial measurement device by suspending the shock absorber ball and installing the fixed inertial measurement device. However, the natural frequencies of the translational vibration modes of the shock absorber mounted on the suspension ball in three directions are quite different. The so-called three directions are one vertical direction and two horizontal directions. The natural frequencies corresponding to the translational modes in the vertical direction of the vibration absorber are much larger than those corresponding to the translational modes in the two horizontal directions. This makes it impossible to isolate the vibration in three directions simultaneously when the vibration is passed through the vibration absorber, so that the measurement accuracy of the inertial measurement device is poor.

Technological implementation elements:

Based on this, it is necessary to provide a Quadcopter and its vibration absorber to solve the problem that the three-direction vibration can not be effectively isolated at the same time when passing through the vibration absorber and the measurement accuracy of the inertial measurement device is poor.

A vibration absorber is used to connect the fuselage of a Quadcopter and an inertial measurement device. The vibration absorber includes:

The bellows body is used to absorb vibration and deform. The first extension part is arranged at the end of the bellows body, and the first extension part is used to connect the fuselage. The second extension part is arranged on the bellows body far from the end of the first extension part. The second extension is used to connect the inertial measurement device.

The quadcopter vibration isolation and the quadcopter is arranged at the end of the bellows body, and the first extension connects the fuselage. The second extension part is arranged on the bellows body far from the end part of the first extension part. The second extension is connected with the inertial measurement device, so that the fuselage and the inertial measurement device are connected together through the vibration isolation device of thequadcopter. Because the bellows are used to absorb vibration and deform. When the quadcopter vibration isolation is transmitted to the vibration isolation device of the four-axis vehicle, the bellows absorb the vibration and contract or elongate or bend, so that the vibration is transmitted to the inertial measurement device through thequadcopter vibration isolationat a lower frequency. The quadcopter vibration isolation mentioned above greatly increases the horizontal dimension of the quadcopter vibration isolation. This makes the horizontal dimension of the vibration isolation device larger than the vertical dimension, and makes the natural frequencies of the translational vibration modes corresponding to the three directions of the quadcopter vibration isolation basically consistent. It solves the problem that the natural frequencies of the three directional translational modes of quadcopter vibration isolation differ greatly. Because the vibration in three directions can be effectively isolated when passing through the vibration isolation device of four-axis aircraft, the measurement accuracy of the inertial measurement device can be guaranteed, and the problem of poor measurement accuracy of the inertial measurement device can be solved. In the design, the natural frequencies corresponding to the translational modes in the three directions of the fuselage can be adjusted by changing the dimensions, shapes and wall thickness of the bellows.

Hoan is one of the leading quadcopter vibration isolation manufacturers in China, Welcome for enquiry.

The Difference Between Rubber Shock Isolators and Rubber Vibration Dampening Mounts

2018.11.22

The vibration damping mounts company has developed a lot of shock absorber components. There are more and more rubber shock isolators on the market, and many consumers are picking on them. In the eyes of the layman, it is true that he does not know how to choose, or what the difference is between the names of one word. For example, the rubber shock isolators and the rubber vibration dampening mounts, generally many people do not understand the difference between them, how to choose the use of methods and occasions. Today I'll show you the difference and use.

Rubber mounts and isolators seem to play the same role, but in fact there are differences, one is to isolate vibration, the other is to reduce vibration, although the role played is similar, but the final effect is often different. In certain environments, vibration isolators must be used. For example, for all kinds of mechanical equipment on land and ship, vibration isolators can be used for horizontal disturbing mechanical equipment.

So what are the characteristics of rubber vibration dampening mounts?

1. Low natural frequency;
2. With long service life, it can resist oil and water erosion, and will not be affected by temperature;
3. High stability and accurate test data;
4. Easy to process and produce, with little change in characteristics; Rubber vibration dampening mounts is more effective than other vibration isolation devices at low frequency.

In general, the rubber shock isolators and the rubber vibration dampening mounts are interconnected but they are different. They are all made of rubber, but with different structures to achieve vibration reduction, but they are excellent shock absorbers in the shock industry. These two components, as pillars of rubber vibration dampening mounts, will play a greater role in all walks of life.

Xi'an Hoan Microwave Co. Ltd., headquartered in China, Xi’an city, was founded in 2005, is a premier supplier of Industry Energy Absorption and Vibration Isolation Products. Contact us today to see how our wire rope vibration isolator can benefit your special equipment application demands or in any way that we can help you meet your production requirements