Vibratory bearing

FIELD: machine building.

SUBSTANCE: vibratory bearing consists of flat flexible elements arranged in form of arc. The flexible element is made in form of convex bearing plate (1) whereto there are perpendicular hinged compensating plates (5) in deformed condition. Reaction forces from the side of compensating plates (5) are directed towards each other. Opposite ends of the plates are secured in stops. The stops are controlled with a travelling bush with a self-locking threaded part.

EFFECT: increased service life and control of vibratory bearing rigidity.

1 dwg

 

The invention relates to the field of engineering, namely to the supports of machinery and equipment.

Known isolation pad (patent No. 2294857 class. V/00, 2007), which is intended for fastening the body to the vehicle frame with variable stiffness characteristic and consists of a rubber cushion, base isolation pad and moving the sleeve with self-locking threaded part, the upper cylindrical part which has a hexagon key, moving the sleeve cushion changes its vertical stiffness is inversely proportional to the length of the protruding part.

The disadvantage is the presence of legkousvaivaemyh elements, the inability to reduce the stiffness of the dampers to zero.

The prototype of the claimed invention serves as a vibration absorber (RF patent for the invention №2298119 CL F16F 7/08, 2007), which can be used to protect process equipment, instruments and devices, as well as the human operator from the effects of vibration and shock loads.

Vibration absorber with quasi-zero stiffness has a flat elastic and damping elements. This flat elastic elements are in the form of a package of elastic elements of the arch type. The damping is carried out using a viscoelastic damper, made in the form providentiales rings associated with elastic ele the customers through the sleeve and located in the plane perpendicular to the vertical axis of the package of elastic elements, due to radial deformation of the elastic elements.

Providentiae ring has a cross-sectional shape of circle, ellipse, triangle, square, rectangle, polygon, liquid or compressed to a certain pressure air or gas.

The disadvantage of the prototype is the design complexity, the use of Provideniya elements narrows the scope of practical use of the invention. In addition, the prototype of the inherent lack of scope quasi-zero stiffness and lack of easy variations preset low stiffness.

The technical objective of the claimed invention is to provide a simple practical dampers with no legkousvaivaemyh elements and possibilities of controlling the stiffness of the dampers.

The problem is solved in that an isolation pad comprising a flat resilient elements, installed in the form of an arch, according to the present invention, the elastic element is designed as curved bearing plate, to which the center perpendicular to the hinge attached compensating plate in the deformed state so that the reaction force from the side of the compensating plates facing each other, and the opposite ends of the plates are secured in the lugs, regulated Eremeev sleeve with self-locking threaded part.

The vibration is provided by regulating the rigidity of the connection, including bringing rigidity for quasi-zero, by applying additional compensating elements, which are partially or completely reduce the rigidity of the main elastic element, which accounts for the static load from vibroisolating object. Additional compensating elastic inserts create a force in the same direction, which moves the point of application of the load in relation to the position of static equilibrium, which reduces the stiffness of the dampers, and therefore increases its effectiveness.

The design of the dampers shown in the drawing. Vibrotherapy load is perceived elastic steel carrier plate 1, sandwiched between two supports 2, and a curved arc to meet the load 3. The lugs are moving the sleeve 4 with self-locking threaded part that allows you to adjust the distance between the lugs 2, and hence the degree of curvature of the carrier plate 1 and the corresponding perceived load 3. Perpendicular to the base plate 1 are two compensating plate 5, on opposite sides of the carrier plate 1, intended to compensate for the rigidity of the plate 1. Each compensating plate 5 one end of which is hinged in the middle bearing lastine 1. The second end of the compensating plate 5 pivotally mounted on the stop 6. In this mounting position on the focus can also be adjusted by moving the sleeve 7 with self-locking threaded part. When this compensating plate 5 are deformed state and tend to spring up. The lugs 2 and 6 are attached to the frame or Foundation. Load 3 from vibroisolating object is attached to the center of the carrier plate 1.

The isolation pad works as follows.

The parameters and the position of the plates 1, 5, and stops 2, 6 are selected so that in the absence of vibration force by compensating plates were directed oppositely and compensated each other. Thus, the entire load 3 from vibroisolating object is completely absorbed by the carrier plate 1. Let the vibration of the object has moved down. Then the carrier plate 1 has received additional compression and increased its reaction force. When this compensating plate 5 has changed its position and began to have a slope down, and thus their resultant reaction force, which compensates the increase of the reaction force of the supporting plate 1, was also aimed down. In the end, the carrier plate 1 is not committed to drastically return to the previous position, thereby not acting on vibrotherapy object and not influencing it dynamic variable is eskay force what causes the vibration isolation effect. When the object moves up the behavior is similar.

Adjustment of the stops 6 for compensating plate 5 allows you to change a reaction force compensating plate 5, which in the end allows you to adjust the stiffness of the dampers. Perhaps giving an isolation pad as quasi-zero stiffness, and given stiffness depending upon design requirements.

As a result of such operation of the device vibrotherapy object does not experience variables dynamic impact of vibrations and external excitatory variables and impact forces, vibrosilenced Foundation, increasing their reliability and durability.

As a material for retaining and compensating plates you can use steel, in particular spring that not only will provide the durability and reliability of a design, and will significantly reduce the cost of it.

The isolation pad comprising a flat resilient elements, installed in the form of an arch, wherein the elastic element is designed as curved bearing plate, to which the center perpendicular to the hinge attached compensating plate in the deformed state so that the reaction force from the side of the compensating plates facing each other, and the opposite ends of plates fixed in the KJV is Oh, adjustable floating sleeve with self-locking threaded part.



 

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Vibratory bearing // 2426920

FIELD: machine building.

SUBSTANCE: vibratory bearing consists of flat flexible elements arranged in form of arc. The flexible element is made in form of convex bearing plate (1) whereto there are perpendicular hinged compensating plates (5) in deformed condition. Reaction forces from the side of compensating plates (5) are directed towards each other. Opposite ends of the plates are secured in stops. The stops are controlled with a travelling bush with a self-locking threaded part.

EFFECT: increased service life and control of vibratory bearing rigidity.

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