CN214999034U - Damping variable damper and shock insulation system with large displacement protection function - Google Patents

Abstract

The utility model relates to a damping variable damper, which comprises a cylinder body, a piston rod and a damping medium filled in the cylinder body; the piston is fixedly arranged in the cylinder body, a rod penetrating hole is formed in the piston, and the guide rod penetrates through the rod penetrating hole; the diameter of the second guide section is smaller than the diameter of the first guide section and the diameter of the third guide section. A shock isolation system with a large displacement protection function comprises a beam, wherein two upper buttresses and a suspension column are arranged below the beam; and two lower buttresses; shock insulation supports are respectively arranged between the two upper buttresses and the two lower buttresses; and a damper is arranged between the suspension post and any one of the lower buttresses, and the damper adopts the viscous fluid damper. The shock insulation layer displacement can be over the design displacement, a large damping force is provided, the too large displacement of the shock insulation layer is limited, and therefore the shock insulation layer is limited to generate large destructive displacement.

Description

Damping variable damper and shock insulation system with large displacement protection function

Technical Field

The utility model relates to a attenuator technical field, concretely relates to damping variable damper, shock insulation system that has big displacement protect function.

Background

The damper is a device for providing resistance to movement and reducing movement energy, and it is not a new technology to absorb energy and shock by damping, and it has been used in the industries of spaceflight, aviation, war industry, gun, automobile, etc. to absorb vibration and dissipate energy.

The seismic isolation technology is to install a seismic isolation support between a building, a bridge foundation and an upper structure so as to reduce the vibration of the upper structure in an earthquake, is a novel seismic isolation technology for buildings and bridges, and is widely applied to thousands of buildings and bridges. And simple shock insulation structure has the great problem of shock insulation layer horizontal displacement, consequently in some shock insulation layers, has installed the viscous fluid damper simultaneously, because viscous fluid damper has the power consumption effect, can reduce the horizontal displacement of shock insulation layer under the earthquake, but most dampers can not restrict the too big displacement of shock insulation layer.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the damping variable damper is provided, so that the problem that the damping force of the existing damper cannot be changed is solved;

and the shock insulation system with the large displacement protection function is provided, so that the problem that a larger damping force cannot be provided when the displacement of a shock insulation layer exceeds the designed displacement in the conventional shock insulation system is solved.

The utility model provides a technical scheme that its technical problem adopted is:

in a first aspect:

a damping variable damper comprises a cylinder body, a piston rod and a damping medium filled in the cylinder body; the piston is fixedly arranged in the cylinder body, a rod penetrating hole is formed in the piston, and the guide rod penetrates through the rod penetrating hole;

the guide rod comprises a first guide section, a second guide section and a third guide section, the second guide section is located between the first guide section and the third guide section, the diameter of the second guide section is smaller than that of the first guide section and that of the third guide section, the diameters of the first guide section and that of the third guide section are the same, a first-order oil passing gap is formed between the second guide section and the rod penetrating hole, second-order oil passing gaps are formed between the first guide section and the rod penetrating hole and between the first guide section and the third guide section and the rod penetrating hole respectively, and the second-order oil passing gaps are smaller than the first-order oil passing gaps.

In a second aspect:

a vibration isolation system with large displacement protection function comprises

The lower part of the beam is provided with two upper buttresses and a suspension column; and

two lower buttresses;

shock insulation supports are respectively arranged between the two upper buttresses and the two lower buttresses;

and a damper is arranged between the suspension post and any one of the lower buttresses, and the damper adopts the damping variable damper.

The utility model has the advantages that:

a variable damping damper is provided, in which when the damper is subjected to a large damping force, a piston is moved to a first guide section or a third guide section of a guide rod, reducing the flow rate of a damping medium, thereby increasing the damping force.

The shock insulation system with the large displacement protection function can provide large damping force when the displacement of the shock insulation layer exceeds the designed displacement, and limit the overlarge displacement of the shock insulation layer, so that the shock insulation layer is limited to generate large destructive displacement.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of the damping variable damper of the present invention;

the device comprises a piston rod 1, a piston rod 2, a piston 3, a cylinder body 7, a guide rod 71, a first guide section 72, a second guide section 73 and a third guide section;

FIG. 2 is a schematic view of a seismic isolation system;

the system comprises a beam, a beam 41, an upper support pier, a 42, a suspension column, a lower support pier, a 6 and a vibration isolation support.

Detailed Description

The invention will now be further described with reference to specific embodiments. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

Example one

As shown in fig. 1, the variable damping damper comprises a cylinder 3, a piston 2, a piston rod 1 and a damping medium filled in the cylinder 3, wherein bushings are respectively fixedly arranged at two ends of the cylinder 3, the piston rod 1 penetrates through the bushings and forms sliding fit with the bushings, a guide rod 7 is arranged between the two bushings so that the guide rod 7 penetrates through the cylinder 3, a rod penetrating hole is formed in the piston 2, and the guide rod 7 penetrates through the rod penetrating hole.

The guide rod 7 comprises a first guide section 71, a second guide section 72 and a third guide section 73, the second guide section 72 is located between the first guide section 71 and the third guide section 73, the diameter of the second guide section 72 is smaller than that of the first guide section 71 and that of the third guide section 73, the diameters of the first guide section 71 and that of the third guide section 73 are the same, a first-stage oil passing gap is formed between the second guide section 72 and a rod penetrating hole, second-stage oil passing gaps are formed between the first guide section 71 and the rod penetrating hole and between the first guide section 73 and the rod penetrating hole, and the second-stage oil passing gap is smaller than the first-stage oil passing gap.

The basic structure of the damper is not described in detail herein, and reference may be made to the prior patent, patent name; a low-viscosity silicone oil type speed locker for bridges in severe cold areas has the following patent numbers: 201710730322.5.

the utility model discloses an improvement point lies in: through the guide rod 7 and the rod penetrating hole on the piston 2; when the damper is in a normal working mode, the piston 2 is positioned at the position of the second guide section 72 of the guide rod 7, at the moment, the force borne by the damper drives the piston 2 to move outside the first guide section 71 through the piston rod 1, the damping medium flows through an oil clearance at one stage, and the damper has a normal damping force; when the damper bears a large damping force, the piston rod 1 drives the piston 2 to move to the first guide section 71 or the third guide section 73, at the moment, a damping medium flows through the second-order oil passing gap, the second-order oil passing gap is smaller than the first-order oil passing gap, the flow rate is reduced, the resistance borne by the piston 2 is increased, and therefore the damping force of the damper is increased.

Example two

As shown in FIG. 2, a seismic isolation system with large displacement protection function comprises

The beam 4, two upper buttresses 41 and a suspension column 42 are arranged below the beam 4; and

two lower buttresses 5;

shock insulation supports 6 are respectively arranged between the two upper buttresses 41 and the two lower buttresses 5;

a damper is arranged between the suspension post 42 and any one of the lower piers 5, and the damper adopts the damping variable damper of the first embodiment.

In the shock insulation system of the embodiment, the shock insulation support 6 also belongs to the existing mature product, and the damper adopts a damping force of the embodiment, and is characterized in that when the beam 4 is in a horizontal displacement caused by normal vibration, the piston 2 of the damper moves outside the second guide section 72, namely, a damping medium flows through an oil clearance at one step, and the damper is in a normal working state; when a large earthquake occurs and the beam 4 moves horizontally in a large displacement mode, the piston 2 in the damper moves to the first guide section 71 or the third guide section 73 from the middle second guide section 72, namely, the second-order oil passing gap is filled with damping medium, and the second-order oil passing gap is smaller than the first-order oil passing gap, so that the damping force applied to the piston 2 is increased, the energy consumption is increased, the damping force of the damper is increased, the safety of a building is guaranteed, and the beam 4 is limited from large destructive displacement.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (2)

1. A damping variable damper comprises a cylinder body, a piston rod and a damping medium filled in the cylinder body; the piston is characterized by further comprising a guide rod, wherein the guide rod is fixedly arranged in the cylinder body, a rod penetrating hole is formed in the piston, and the guide rod penetrates through the rod penetrating hole;

the guide rod comprises a first guide section, a second guide section and a third guide section, the second guide section is located between the first guide section and the third guide section, the diameter of the second guide section is smaller than that of the first guide section and that of the third guide section, the diameters of the first guide section and that of the third guide section are the same, a first-order oil passing gap is formed between the second guide section and the rod penetrating hole, second-order oil passing gaps are formed between the first guide section and the rod penetrating hole and between the first guide section and the third guide section and the rod penetrating hole respectively, and the second-order oil passing gaps are smaller than the first-order oil passing gaps.

2. A shock isolation system with large displacement protection function is characterized by comprising

The lower part of the beam is provided with two upper buttresses and a suspension column; and

two lower buttresses;

shock insulation supports are respectively arranged between the two upper buttresses and the two lower buttresses;

a damper is arranged between the suspension post and any one of the lower buttresses, and the damper adopts the damping variable damper in claim 1.

Images