SU1507911A1 - Vibration insulator of foundation under plant - Google Patents

Abstract

The invention relates to the construction of an vibration isolator for equipment and makes it possible to facilitate the installation of an vibration isolator and reduce the consumption of materials for the foundation. The vibration insulator contains a package of elastic elements 2 located between the upper and lower cross-arms 3. The cross-arms are interconnected by tensioning devices 5 and are made with bevels 4 forming unsupported sections. The bevel height H _ck and the bevel angle α of each unsupported area is determined by the corresponding dependencies: SINΑ = (F ₂ -F ₁ ) / 2L, H _cc = [(LL _op ) TGΑ] / 2, where L is the distance between the axes tightening devices

L _op- width of the support section traverse

F ₁ - draft of vibration isolator under working load

F ₂ - sediment of vibration isolator under maximum load. Vibration isolators are installed between the base block and the base box. When mounting vibration isolators, they are preloaded with tensioning tools and additionally pressed with tensioning devices from the mounting side. In this state, they are mounted on a base box, and then released from pressure. 4 il.

Description

//

Lrbi

SP

oh h

rya

The invention relates to the construction and construction of foundations for equipment, namely the implementation of vibration isolators used in them.

The purpose of the invention is to facilitate the installation of the vibration isolator and the reduction of the material intensity of the foundation.

 FIG. 1 shows the foundation for the equipment, a general view; in fig. 2 - vibration isolator; in fig. 3 - the same mounting position; in fig. 4 - the same working position.

The proposed vibration isolator 1 contains a package of elastic elements 2 located between the cross-arms 3, which are made on both sides from the outside with bevels 4. At the ends of the cross-bar 6 are interconnected by straps 5. The beveled traverse tracks are unsupported and the bevel height h . and the bevel angle of the supportless area is determined by the corresponding dependencies:

S i p about: g-;

 Lt

hc. .

where оС - t «Lrj.

unsupported plot

bevel angle;

the height of the bevel unsupported plot traverse;

spacing between axle attachments;

ton width, traverse support section;

fi - sediment of vibration isolator under working load;

4 - sediment of vibration isolator under maximum load.

Vibration isolators are installed between the foundation block 6 and the foundation box 7. A perimeter or part of the perimeter of the foundation block 6 has a passage 8 for installing vibration isolators.

The installation of the vibroisolated basement is carried out in the following sequence.

The base duct 7 and the foundation block 6 are made. After pre-assembling the vibration isolator 1 with compression devices 5, it is compressed by the value of A, where A., is the maximum possible oscillation amplitude of the foundation block.

Then, the vibration isolator 1 with the aid of the tension device 5 is additionally pressed from the mounting side until the maximum draft f is created in the elastic element 2 nearest to this tension device, thus fulfilling the condition:

.

where H, p is the mounting gap between the foundation block and the base;

0

five

0

five

0

five

0

five

0

five

4 h H-A-2b. To: -

the minimum dimension of the vibration isolator in height after one-side tightening of the clamping devices from the mounting side; li- height of vibration isolator in free state.

Due to the fact that the cross-arms from the outer side are beveled, the minimum dimension of the vibration isolator of the height after one-sided pressing by means of fixtures 5, located on the mounting side, is less than the installation gap between the foundation block 6 and the foundation box 7. This allows one-sided compression to be introduced vibration isolator 1 in the space left at the time of manufacture between the foundation block 6 and the duct 7.

Upon further release of the tie-down device 5, which is on the side of the passage, the vibration isolator, expanding, begins to rotate relative to the axis of the tie-down device located on the opposite side. When it comes into contact with the lower edge of the base block, the upper and lower traverse 3 abut respectively on the foundation block 6 and the box 7 on the face A.

Then, the traverses begin to rotate with respect to these lines of contact until the traverses are completely in contact with the concrete surfaces of the block and the duct throughout the supporting section.

At the same time, they are relieved of the preliminary pressing of the rigid fixture 5, located on the side opposite to the installation one, and the vibration isolator is put into operation. For reconditioning or revising vibration isolators, they are dismantled in reverse order.

The proposed vibration isolator allows installation and disassembly of vibration isolators on one side. In turn, this allows to minimize the distance between adjacent vibration insulators and to achieve the most realistic basement layout, which leads to a reduction in the dimensions of the foundations and a decrease in material consumption. This is especially important when reconstructing in cramped conditions.

Claims (1)

Invention Formula Vibro-insulator of the foundation for equipment, including the upper and lower traverses, each of which is made with a central support and peripheral support-free sections, elastic elements placed between the traverses, and fasteners that connect the traverse at the ends, which, in order to facilitate mounting the vibration isolator and reducing the material consumption of the foundation, the supportless areas adjoin the support section and are made bevelled, and the angle and height of the bevel of each supportless section are determined by the corresponding E w of dependencies  21. h.K -2- ° - tg «r, where ot, is the bevel angle of the unsupported section of the traverse; sediment of vibration isolator under maximum load; draft of vibration isolator iodine workload; the distance between the axial 11p1 aids; bevel height traverse; the width of the support section of the traverse. 7 / eight srig.1 Fig.Z Phases. H