SU1739137A1 - Vibration protection suspension - Google Patents

Abstract

Use: protection from vibration, in particular, ship power plants. SUMMARY OF THE INVENTION: The vibroprotective suspension includes a rod 2 connected to a vibrating object 3, a spring 4 mounted on the protected object 5, a carriage 6 connected to the rod 2 by means of rolling bodies 10 and rigidly associated flywheels 11, prismatic knife 8 for interacting with spring 4 through carriage 6. The use of rolling bodies 10 eliminates the transfer of friction forces to the protected object 5 in the process of rebuilding the suspension for varying loads, which improves its vibration-proof properties. 1 il.

Description

The invention relates to ship power plants, in particular to their suspensions, and can be used in all sectors of the economy where vibration protection is required.

A vibroprotective suspension is known comprising an elastic element installed between a vibrating and protected object and a stiffener parallel to it, fixed at one end to a vibrating object, and the second connected to a tracking mechanism that ensures that the compensator elements are held in the area of their working movements and made in the form of friction fixed by protected object slider.

The disadvantage of the suspension is the large dynamic forces transmitted to the protected object when it is rebuilt to a changing load.

Closest to the invention in terms of technical nature and the achieved effect is a vibration protection suspension containing a rod connected to a vibrating object, a spring cantilever mounted on the protected object, a carriage connected to the rod, a gear wheel interacting with the rod and limiters installed on the protected object, as well as a prismatic knife for interacting with the spring through the carriage,

A disadvantage of the known suspension is that in the process of tuning it to a changing load on the protected object, dynamic forces are transmitted that arise due to the dry friction forces between the rod and the carriage.

The purpose of the invention is the improvement of the vibration-proof properties of the suspension.

The drawing shows a diagram of vibration protection.

The vibroprotective suspension comprises an axially spring-loaded rod 2 using an elastic element 1, connected to a vibrating object 3, a spring 4, cantileverly mounted on the protected object 5, a carriage 6 connected to the rod 2, limiters 7 mounted on the protected object 5 and a prism knife 8 to interact with the spring 4 through the carriage 6.

The vibration-isolating suspension also contains an additional elastic element 9 installed between the carriage 6 and the protected object 5 parallel to the suspension axis, mounted on the carriage 6 for communication with the rod 2 of the rolling body 10 and coaxially located and rigidly connected to them by the flywheels 11.

Vibration protection works as follows.

When the vibrating object 3 vibrates under the action of a disturbing force, the average value of P which is constant, the prismatic knife 8 makes oscillating movements around its contact line with the spring 4. Due to the inertia of the flywheels 11 and the friction forces between the rod 2 and the rolling bodies 10, the carriage 6 during oscillations of the prismatic knife 8 remains stationary relative to the vibrating object 3. The vertical components of the forces transmitted from the spring 4 through the prismatic knife 8 to the carriage 6 will also be almost completely transmitted to to 2, which provides a corrective effect on the stiffness of the suspension.

When changing, for example, when increasing, P and vibrations of the vibrating object 3, the latter with the rod 2 and the associated carriage 6, the rolling bodies 10 and the flywheels 11 moves down. In this case, the additional elastic element 9 is compressed, which will tend to return the carriage 6 to its original position (relative to the protected object 5), overcoming the gravity of the carriage 6, rolling bodies 10 and flywheels 11 and their moments of inertia. Thus, when P changes, the distance between the protected object 5 and the carriage 6 is maintained, which ensures the retention of prismatic knives 8 in the area of their working movements and effective correction of the suspension stiffness at any value of R.

With a sudden change in P, the carriage 6 abuts against one of the stops 7 and the rod 2 slides relative to the rolling bodies 10. At the end of the slip, the rolling bodies are again engaged by friction forces with the rod 2.

The use of rolling bodies installed between the rod of the vibrating object and the carriage eliminates the transfer of friction forces to the protected object during the adjustment of the suspension to a changing load, which improves the vibration-proof properties of the suspension.

Claims (1)

Claim A vibroprotective suspension containing an axially spring-loaded rod connected to a vibrating object, a spring cantileverly mounted on the protected object, a carriage connected to the rod, limiters installed on the protected object, and a prismatic knife for interacting with the spring through the carriage, In order to improve vibration protection properties, it is equipped with an additional elastic element installed between the carriage and the protected object parallel to the suspension axis, mounted on the carriage for communication with the rod by rolling bodies and flywheels coaxially located and rigidly connected to it. Editor V. Danko Compiled by A. Zuev Tehred M. Morgenthal Corrector O. Kravtsova Order 1992 ¹ Circulation Subscribed VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.