CN105443652A - Vibration reducing and isolating system with limiting devices and installing and arranging method thereof - Google Patents

Abstract

The invention discloses a shock-absorbing and isolation system with a position-limiting device and its installation and arrangement method. The system is provided with a support platform, a reaction force component and a shock-absorption and isolation foundation. The support platform is located between the reaction force components, and lead Shock absorber; a shock isolator is vertically arranged between the supporting platform and the shock-absorbing and isolating foundation, and the limit device is fixed on the reaction member and is located between the support platform and the reaction member. The shock isolator and shock absorber of this device are cleverly arranged in the structure to form a shock absorption and isolation system with clear shock absorption and shock isolation mechanism; the construction and installation are convenient, the cost is low, and the seismic response of the smoothing reactor can be effectively reduced. Broad engineering application space.

Description

A vibration-absorbing and isolating system with a limit device and its installation and arrangement method

technical field

The invention relates to a shock-isolation system, in particular to a shock-absorbing and isolation system with a limit device and an installation and arrangement method thereof.

Background technique

my country is located between the Eurasian seismic belt and the circum-Pacific seismic belt, and is an earthquake-prone country. Research on earthquake damage in recent years has shown that electrical equipment, especially electrical equipment made of ceramic materials, is highly vulnerable to earthquakes.

The smoothing reactor is a typical top-heavy structure, which bears a large seismic force under the action of an earthquake, which may easily cause damage to the post insulator or cause a large displacement of the smoothing reactor to lose its electrical function. In order to reduce the shock damage of the smoothing reactor and protect the safety and stability of the smoothing reactor under earthquake action, the present invention reduces Transmission of seismic energy to upper electrical equipment. At the same time, S-shaped lead shock absorbers and rubber pad limit devices are installed around the supporting platform to further dissipate the seismic energy and reduce and limit the displacement of the smoothing reactor under the action of the earthquake. The shock absorption and isolation system has the advantages of convenient construction, relatively low engineering cost, clear shock absorption and isolation mechanism, etc., can effectively reduce the seismic response of equipment, and has broad engineering application space.

Invention content:

The object of the present invention is to provide a shock-absorbing and isolating system with a limiting device, which is installed and arranged between the support platform and the foundation to reduce the transmission of seismic energy to the upper electrical equipment.

To achieve the above object, the present invention adopts the following technical solutions:

A shock-absorbing and isolation system with a limit device, the system is provided with a supporting platform 1, a reaction force member 2 and a shock-absorbing and isolating foundation 3, characterized in that the support platform 1 is located between the reaction force members 2, and between the two A lead shock absorber 6 is set; a shock isolator 5 is vertically arranged between the support platform 1 and the shock-absorbing and isolating foundation 3, and the limit device 4 is fixed on the reaction force member 2 and is located between the support platform 1 and the reaction force member 2.

A first preferred solution of a shock-absorbing and isolating system with a limiting device, the limiting device 4 is in the shape of a rubber pad or a metal strip, the thickness of the limiting device 4 is 180-220mm, and the width may be 300-500mm.

A second preferred solution of a shock-absorbing and isolating system with a limit device, the shock isolator 5 is composed of multiple layers of rubber and multi-layer steel plates in the vertical direction, and the shock isolator 5 is provided with upper and lower connecting plates respectively It is connected with the support platform 1 and the shock-absorbing and isolation foundation 3 .

A third preferred solution of a shock-absorbing and isolating system with a limit device, the main body of the lead shock absorber 6 is horizontally S-shaped and connecting plates are arranged on the left and right, the purity of lead is above 99.99%, and the diameter of the lead rod is 140 ~160mm.

In a fourth preferred solution of a shock-absorbing and isolating system with a limit device, the thickness of the support platform 1 is more than 600mm.

In a fifth preferred solution of a shock-absorbing and isolating system with a limit device, the reaction member 2 is a steel member or a concrete member.

A method for installing and arranging a shock-absorbing and isolating system with a limit device, the method comprising the following steps:

1) prefabricating the supporting platform 1;

2) Install the reaction force member 2 so that it is reliably connected with the shock-absorbing and isolating foundation 3;

3) The upper connecting plate of the shock isolator 5 is connected with the support platform 1, and the lower connecting plate is connected with the shock-absorbing and isolating foundation 3;

4) The connection plates at both ends of the lead shock absorber are respectively connected to the side of the reaction force member 2 and the support platform 1;

5) The limiting device 4 is installed on the reaction force member 2 .

A first preferred solution of the installation and arrangement method of the shock absorption and isolation system with a limit device, the gap between the limit device and the support platform 1 is 150 mm to 200 mm.

A second preferred solution for the installation and arrangement method of a shock absorbing and isolating system with a limit device, the distance between the bottom of the limit device 4 and the uppermost edge of the lead shock absorber is greater than 100mm.

Compared with the closest prior art, the present invention has the following excellent effects:

1. The present invention reduces the response of electrical equipment under the action of an earthquake by providing a shock-isolation layer at the bottom of the electrical equipment support platform and a shock absorbing device around the support platform, and simultaneously sets a rubber pad limit device to prevent electrical equipment under the action of an earthquake. Excessive horizontal displacement is produced.

2. The present invention cleverly arranges the shock isolator and shock absorber in the structure to form a shock absorption and isolation system with clear shock absorption and shock isolation mechanism.

3. The invention is convenient in construction and installation, low in cost, can effectively reduce the seismic response of the smoothing reactor, and has broad engineering application space.

Description of drawings

Fig. 1 is the schematic diagram of the shock-absorbing and isolating system with limit device;

Fig. 2 is a bottom view of the shock-absorbing and isolating assembly;

Fig. 3 is a schematic diagram of a shock isolator;

Fig. 4 is a schematic diagram of a lead shock absorber;

Among them, 1 support platform, 2 reaction force components, 3 shock-absorbing and isolation foundations, 4 limit devices, 5 shock isolators, and 6 lead shock absorbers.

detailed description

The specific embodiments will be described in further detail below in conjunction with the accompanying drawings, and the technical solution of the present invention will be clearly and completely described. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

A shock-absorbing and isolating system with a limiting device and its installation and arrangement method, as shown in Figures 1 and 2, the shock-absorbing and isolating system mainly consists of a support platform 1, a limiting device 4, a lead shock absorber 6, and a shock isolator 5. Composed of reaction force member 2 and shock-absorbing and isolation foundation 3. A shock isolator 5 is installed between the support platform 1 and the foundation, and a limit device 4 and a lead shock absorber 6 are installed around the support platform 1, wherein the limit device 4 is fixed on the reaction force member 2, and one end of the lead shock absorber 6 is connected to the reaction force member. The force member 2 is connected, and the other end is connected with the supporting platform 1 . When an earthquake occurs, the shock isolator 5 installed between the supporting platform 1 and the foundation first prevents part of the seismic energy from being transmitted to the upper structure, and at the same time makes the upper structure present an overall displacement form under the action of the earthquake, avoiding the generation of vibration between different components. Relative movement increases the seismic response of the equipment. When the upper structure is displaced, the S-shaped lead shock absorber connected to the supporting platform 1 undergoes tensile or compressive deformation to dissipate seismic energy, further reducing the seismic response of electrical equipment. When the displacement of the supporting platform 1 is too large, in order to avoid excessive displacement of the electrical equipment and protect the shock absorbing and isolating device, the rubber pad limit device will softly collide with the supporting platform 1 to limit the supporting platform 1 and the equipment installed on it. Excessive displacement of electrical equipment. Under the action of an earthquake, different parts of the shock absorption and isolation system work together to achieve the purpose of reducing seismic force transmission and dissipating seismic energy, and improving the seismic performance of electrical equipment.

The working principle of this system is described as follows: When an earthquake occurs, the shock isolator 5 installed between the supporting platform 1 and the foundation first prevents part of the seismic energy from being transmitted to the upper structure, and at the same time makes the upper structure present an overall displacement form under the action of the earthquake , to avoid relative movement between different components and increase the seismic response of the equipment. When the upper structure is displaced, the S-shaped lead shock absorber connected to the supporting platform 1 undergoes tensile or compressive deformation to dissipate seismic energy, further reducing the seismic response of electrical equipment. When the displacement of the supporting platform 1 is too large, in order to avoid excessive displacement of the electrical equipment and protect the shock absorbing and isolating device, the rubber pad limit device will softly collide with the supporting platform 1 to limit the supporting platform 1 and the equipment installed on it. Excessive displacement of electrical equipment. Under the action of an earthquake, different parts of the shock absorption and isolation system work together to achieve the purpose of reducing seismic force transmission and dissipating seismic energy, and improving the seismic performance of electrical equipment.

The construction and installation steps of the system are as follows: (1) carry out foundation treatment and foundation construction work, and prefabricate the support platform 1 at the same time, according to the installation requirements, pre-embed screw rods at the top, bottom and side of the support platform 1, respectively for connecting electrical equipment The post insulator, the connection plate on the shock isolator 5 and the connection plate of the S-type lead shock absorber. (2) Carry out the construction and installation of the reaction force member 2. The reaction force member 2 can be a steel member or a concrete member, and the bottom should be reliably connected to the foundation. (3) Connect the lower connecting plate of the shock isolator 5 to the foundation. (4) Connect the prefabricated supporting platform 1 with the connecting plate on the shock isolator 5 . (5) Connect the connection plates at both ends of the S-shaped lead shock absorber to the reaction member 2 and the side of the support platform 1 respectively. (6) Install the rubber pad limit device on the reaction force member 2. (2) Carry out the installation work of the electrical equipment on the upper part of the platform.

Relevant installation requirements are as follows: (1) For the convenience of the installation of the shock isolator 5, the foundation below the shock isolator 5 can be made into a strip foundation, and the shock isolator 5 is installed on the strip foundation beam, and the gap between the strip foundations A certain space can be provided for the installation and maintenance of the shock isolator 5, and the foundation should have sufficient bearing capacity. (2) The shock isolator 5 can be made of rubber damping material, consisting of laminated rubber and steel plates. (3) The type selection of the isolator 5 mainly considers the maximum horizontal displacement of electrical equipment under rare earthquakes and the vertical average compressive stress value during use, and the performance parameters of the support are usually determined based on these two. Further, according to the requirements of the design parameters, determine the horizontal stiffness, equivalent viscous damping ratio and other performance requirements of this type of support. (4) The layout of the shock isolator 5 should be uniform and symmetrical according to the mass distribution of the superstructure and the plane stress situation, and the stiffness center of the shock-isolation layer should coincide with the mass center of the superstructure as much as possible. (6) The rubber pad limit device can adopt the same rubber material as the shock isolator 5 . (2) The S-type lead shock absorber aims at "following large deformation and high damping force". The purity of the lead is above 99.99%, and the diameter of the lead rod should be about 150mm.

The main size requirements for installation are as follows: (1) The gap between the rubber pad limit device and the supporting platform 1 should be selected between 150mm and 200mm to prevent excessive displacement of the supporting platform 1 and the upper structure under the action of the earthquake. (2) The thickness of the support platform 1 may be more than 600mm, so as to ensure that the support platform 1 has sufficient rigidity and leave room for the installation of the S-type lead shock absorber and the rubber pad limit device. (3) The thickness of the rubber pad limit device can be about 200mm, and the width can be 300mm-500mm. (4) The distance between the bottom of the rubber pad limit device and the uppermost edge of the S-type lead shock absorber should be greater than 100mm to ensure that the lead rod does not come into contact with the rubber pad limit device during deformation.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Those of ordinary skill in the art should understand that the specific implementation methods of the present invention can be modified or equivalently replaced with reference to the above embodiments without departing from the spirit of the present invention. Any modification or equivalent replacement of the scope and scope is within the protection scope of the pending claims.

Claims (9)

1. one kind with stopper subtracts shock isolation system, this Operation system setting has support platform (1), reaction component (2) and subtract shock insulating foundation (3), it is characterized in that, described support platform (1) is positioned between reaction component (2), arranges plumbous vibration damper (6) between the two; Support platform (1) and subtract between shock insulating foundation (3) and vertically arrange isolator (5), it is upper and be positioned between described support platform (1) and reaction component (2) that limit stoper (4) is fixed on reaction component (2).

2. according to claim 1ly a kind ofly with stopper subtract shock isolation system, it is characterized in that, described limit stoper (4) is rubber pad or metal strip, and the thickness of described limit stoper (4) is 180 ~ 220mm, the desirable 300 ~ 500mm of width.

3. according to claim 1ly a kind ofly with stopper subtract shock isolation system, it is characterized in that, described isolator (5) vertical direction is superposed by multilayer rubber and multilayer steel plates and forms, described isolator (5) is provided with lower connecting plate and is connected with described support platform (1) respectively and subtracts shock insulating foundation (3) and connect.

4. according to claim 1ly a kind ofly with stopper subtract shock isolation system, it is characterized in that, the main body of described plumbous vibration damper (6) becomes horizontal S type and left and right is provided with connecting plate, and plumbous purity is more than 99.99%, and lead rod diameter is 140 ~ 160mm.

5. according to claim 1ly a kind ofly with stopper subtract shock isolation system, it is characterized in that, the thickness of described support platform (1) is more than 600mm.

6. according to claim 1ly a kind ofly with stopper subtract shock isolation system, it is characterized in that, described reaction component (2) is steel beam column or concrete member.

7. a kind of with stopper mounting arrangements method subtracting shock isolation system according to claim 1, is characterized in that, said method comprising the steps of:

1) prefabricated described support platform (1);

2) described reaction component (2) is installed, makes it reliably to be connected with the described shock insulating foundation (3) that subtracts;

3) upper junction plate of described isolator (5) connects described support platform (1), and its lower connecting plate is connected with the described shock insulating foundation (3) that subtracts;

4) connecting plate at described plumbous vibration damper (6) two ends is connected with described reaction component (2) and described support platform (1) side respectively;

5) described limit stoper (4) is arranged in reaction component (2).

8. a kind of with stopper mounting arrangements method subtracting shock isolation system according to claim 7, it is characterized in that, the gap between described limit stoper and described support platform (1) is 150mm ~ 200mm.

9. a kind of with stopper mounting arrangements method subtracting shock isolation system according to claim 7, is characterized in that, described limit stoper (4) bottom is greater than 100mm with the distance of the most upper limb of described plumbous vibration damper.