Shockproof seismic device

 

(57) Abstract:

Usage: the invention relates to a device capable of simultaneously greatly weaken the destructive force of the shock wave and horizontal vibrations, and can be used in the construction of earthquake-resistant buildings and structures, with special significance it will have in the nuclear industry in seismically hazardous areas. The essence of the invention: cylinder with top and bottom flange posted by a needle valve and a piston with a through hole in the nozzle. On the upper flange placed filled with a nonfreezing liquid corrugated expansion joint with ball head. On the last set bearing flange with spherical ball groove under the head. The top flange is connected to the supporting flange steel spring-loaded connections and swivel ball head joint. The device is equipped with means for filling the cylinder with compressed gas. 1 Il.

The invention relates to absorbing longitudinal and transverse waves gearless mechanical devices and can be applied in seismologically buildings and structures.

The invention aims at the expansion of the construction sector, for example the options directly, using this device as an intermediate support between the Foundation and the Assembly, and between the Foundation and the load-carrying platform on which is mounted teplotehnichesky connected between the equipment. It is possible agregate device usage.

The closest analogue is shockproof seismic unit comprising a cylinder with top and bottom flanges (see application Germany N 1634364, CL E 02 D 27/34, 1972).

A disadvantage of the known solution is ineffective to protect facilities against seismic effects and higher costs for construction in seismic zones.

The goal of reducing the devastating impact force during an earthquake, reducing the cost of construction, expansion construction in seismically active areas.

The drawing shows a section of a combined anti-shock device.

Shockproof seismic device consists of a combination of two devices connected in a common structure: the lower part for the attenuation of the shock wave, which causes a longitudinal wave, the upper bellows type expansion joint filled with non-freezing liquid to loosen the horizontal oscillations.

user 5 with a shut-off valve 6 to fill the cylinder with compressed air (if necessary compactness and the difference of conditions of work), cast iron piston 7 with a through hole in the nozzle. The diameter of the narrowest part of the nozzle 8 (neck) is somewhat larger than the diameter of the cylindrical part of the needle valve 4, under the head which is equipped with sealing washer from red copper 9. To the intermediate flange 3 is welded corrugated bellows type expansion joint 10 with a ball head 11 and the tube 12 to fill the liquid sealing washer 13. Through a thin layer of graphite lubricant 14 to the ball head 11 has upper bearing cap flange 15, which is attached to the support equipment or Foundation of the building.

To remove excessive load on the expansion joint 10 with a very strong horizontal variations and restore the original static position, the device has a steel thrust 16, which have a swivel ball head 11 through the gussets 17 and spring tensioning device 18 of the lower flange.

Such rod 16 around the circumference shall be sited not less than three. Several spring-loaded connections 19, located on a circle, connect the device into a single structure.

To specific pressure in the cylinder 1 was within the acceptable range, it is necessary to give preference to the diameter, and not you is to be perceived in the beginning, only the cylinder wall 11, its destructive power will be largely suppressed.

The device operates as follows.

A powerful impetus in the earthquake through the pile or Foundation of object is passed to the shock-proof device, as a result, instantly, with a large acceleration, the piston 7 will go up, compressing the air in the cylinder 1 and creating a vacuum below the piston 7. Compressed air from the upper cavity of the cylinder 1 through the nozzle 8 will flow into the lower cavity, reducing the pressure above the piston 7. Continuing to rise and compress air, the piston 7 will be close to the needle valve 4, which will include the first cone and then to the cylindrical portion in the neck of the nozzle 8, forming only the annular gap for the passage of air. Increasing the pressure above the piston 7 and the vacuum under the piston 7 nut will stop it from giving all purchased from strike force. The air pressure in the cavity of the cylinder 1 through the annular gap in the neck of the nozzle 8 is gradually vyrovnitsja, and the piston 7 is gently lowered to its original position.

It is known that the operation of the driving force is spent on changing the kinematic energy of the body and to overcome the resistance forces.

From this it follows that the cylinder 1 shockproof device is barb shockproof device (if neobhodimosti) you can use compressed air, by blowing it into the cylinder through the valve 6.

The operation of the hydraulic compensation device 10, horizontal cushioning shocks as follows.

It is known that almost liquid is not compressible, so this device with axial load behaves the same as a hard support. When a horizontal force inertia of the mass of the building or structure will remain dormant due to the flexible support and the sphericity of the pair of support parts of the head. The elasticity of corrugated compensator 10 using the spring rods 16 will put the ball head 11 into position.

Shockproof seismic unit comprising a cylinder with top and bottom flanges, characterized in that the cylinder is placed a needle valve and a piston having a through hole in the nozzle, and on the upper flange of the cylinder is placed filled with a nonfreezing liquid corrugated expansion joint with ball head, on which is mounted a bearing flange with spherical recess under the ball head, the device is equipped with means for filling the cylinder with compressed gas, and the upper flange of the cylinder by spring links connected to the support flange and through the steel podrugi the

 

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