CN206173791U - Ring attenuator subtracts isolation bearing - Google Patents

Abstract

The utility model discloses a shock-absorbing and isolating support for a ring damper, which comprises an upper support plate and a lower support plate, and a shock-absorbing and isolating assembly arranged between the upper and lower support plates, and also includes a circular Ring damper; the shock-absorbing and isolating assembly is located in the through hole of the ring damper; four ear plates with connecting holes are arranged on the circumference of the ring damper; the opposite pair of ear plates are connected to the upper plate through the corresponding connecting holes The bearing plate, and the other pair of lug plates are connected to the lower bearing plate through corresponding connection holes. According to the utility model, the structure is compact, and the effect of shock absorption and isolation is relatively good.

Description

Ring damper shock-absorbing support

technical field

The utility model relates to a bridge support, in particular to a shock-absorbing and isolating support with a damper.

Background technique

The ring damper, that is, the ring damper, is a kind of buffer damper, such as the ring low carbon steel hysteresis damper, which is often used in construction joints, and it can reciprocate under the plastic strain exceeding the yield strain by several tens of times Deformation without breaking, its reciprocating deformation hysteresis curve in the plastic stage is full in shape, and the energy dissipation effect is good, so the inventor believes that it can be applied to the technical field of bridge supports for shock absorption (vibration generated by conventional vehicles passing through), At the same time, it also has a good energy dissipation effect on earthquakes, reduces the seismic response of structures, and can effectively reduce structural damage.

Dampers have been used in bridge supports for a long time, such as mild steel dampers, which are widely used in bridge supports. However, although mild steel dampers have very good energy dissipation performance, they are currently applied to bridges The shock-absorbing and isolating support of the soft damping cylinder formed on the support is generally bulky, which seriously affects its assembly, storage and transportation. Therefore, it has become an urgent problem to be solved to maintain the good energy dissipation performance of the mild steel damper and reduce the volume of this type of shock-absorbing and isolating bearing.

Typically, as in the Chinese patent document CN102409609A, an elastic-plastic damper (mild steel damper is one of them) is used to dissipate seismic energy in conjunction with a velocity locking period, which maintains the general structure of the traditional spherical bridge bearing, that is, its The center is still the spherical bearing part, and then the elastic-plastic damper and speed locker are installed on the periphery of the spherical bearing. Compared with the spherical bearing, its longitudinal or transverse dimension is at least doubled, and the volume is too large .

Similarly, the Chinese patent document CN201605530U also adopts a structure in which a mild steel damper is added to the periphery of the traditional spherical bearing. In the direction of adding the mild steel damper, its size is two to three times that of the traditional spherical bearing.

In order to reduce the volume, the Chinese patent document CN105887668A uses butterfly springs (elastic parts are also equivalent to dampers) for buffering. It has a guide column and a set of butterfly springs sleeved on the guide column. , the butterfly spring is the one with the largest stiffness coefficient among the springs, but it is still inferior to the mild steel damper. Therefore, its vertical dimension is too large and it is easy to lose stability. Several C-shaped mild steel dampers are arranged around the spring. The C-shaped mild steel dampers not only further improve the elasticity of the bridge support, but also can make the butterfly spring part more stable. However, the C-shaped structure is a bow-shaped structure, which will inevitably increase the volume in the bow-shaped direction, and overall, the structure produced by the cooperation of the mild steel damper and the butterfly spring is rather complicated.

Disclosed in Chinese patent document CN205475715U is a kind of bridge bearing, and its basic structure is to be provided with the circular spiral structure with upper and lower structure again on the periphery of traditional spherical bearing, this kind of structure should be arranged on the traditional structure due to the circular spiral structure The outer periphery of the spherical bearing has a relatively large overall structure. In particular, the vertical ring-shaped spiral structure is mainly used to bear the load in the up and down direction. This is exactly the function of the traditional spherical bearing. The shock absorption in the horizontal direction performance will be affected.

Utility model content

In view of this, the purpose of the utility model is to provide a ring damper shock-absorbing and isolating support with compact structure and relatively good effect of shock-absorbing and isolating.

The utility model adopts the following technical solutions:

A shock-absorbing and isolating support for a ring damper, including an upper support plate and a lower support plate, and a shock-absorbing and isolating assembly arranged between the upper support plate and the lower support plate, and a ring damper;

The shock-absorbing and isolating assembly is located in the through hole of the ring damper;

There are four lug plates with connection holes in the circumferential direction of the ring damper;

The opposite pair of ear plates are connected to the upper support plate through corresponding connection holes, and the other pair of ear plates are connected to the lower support plate through corresponding connection holes.

For the vibration-absorbing and isolating support of the above-mentioned ring damper, optionally, a downward-hanging seat is provided at the position where the upper support plate is aligned with the connected lug plate;

An upwardly overhanging seat is provided at the position where the lower support plate is aligned with the connected lug plate.

Optionally, the downwardly depending seat and the upwardly depending seat overhang the same length.

Optionally, the seat is a screw seat, and correspondingly, the connection between the ear plate and the corresponding seat is through a screw.

Optionally, the shock-absorbing and isolating assembly is a basin-type shock-isolating assembly.

Optionally, the basin-type shock-absorbing and isolating assembly is a circular structure, and a rubber bearing plate, a middle liner are arranged in the basin of the basin structure from bottom to top, and a slide plate is arranged on the upper surface of the middle liner.

Optionally, the slide plate is higher than the upper surface of the basin structure, so that an anti-interference distance is left between the lower surface of the upper bearing plate and the upper surface of the basin structure.

Optionally, the slide plate includes a planar slide plate directly matched with the middle lining plate and a planar stainless steel plate stacked on the upper surface of the planar slide plate.

Optionally, a pin hole is opened in the center of the shock-absorbing and isolating assembly, and the upper end of a safety pin is connected to the upper support plate, and is connected to the lower support plate after passing through the pin hole.

Optionally, the ring damper is located in the middle of the upper support plate and the lower support plate in the vertical direction.

Although in the present invention, the ring damper is still located at the periphery of the shock-isolating assembly, however, the ring damper relies on its own deformation to produce damping here, and the structure of each side is relative to the existing damping Type bridge bearings are much more compact. The generation of its damping depends on the whole, rather than the local structure, so that the overall energy dissipation effect is better. In this way, the damage or damage to the bridge structure caused by vibration or earthquake can be more effectively reduced.

Description of drawings

Fig. 1 is a schematic diagram of the main sectional structure of a shock-absorbing and isolating support of a ring damper according to the utility model.

FIG. 2 is a schematic view of the left section structure corresponding to FIG. 1 .

Fig. 3 is a top view structural diagram of a ring damper.

In the figure: 1. Upper support plate, 2. Ring damper, 3. Via hole, 4. Flat stainless steel plate, 5. Flat slide plate, 6. Safety pin, 7. Intermediate liner, 8. Rubber bearing plate , 9. Pot structure, 10. Ear plate, 11. Screw, 12. Lower bearing plate, 13. Screw seat, 14. Screw seat.

detailed description

A ring damper shock-absorbing and isolation bearing shown in Figure 1 and Figure 2 can be roughly understood as setting a ring damper 2 on the basis of a traditional basin bridge bearing, which has a typical structure of a traditional bridge bearing, That is, the upper and lower structure, wherein the upper support plate 1 is used to bear the girder body of a bridge or other parts and components that need to be loaded. The lower bearing plate 12 is typically mounted on, for example, a bridge pier.

The space between the upper support plate 1 and the lower support plate 12 is used for setting the vibration-absorbing and isolating components.

The upper support plate 1 and the lower support plate 12 can roughly be understood as an upper and lower structure. In a top view, the upper support plate 1 and the lower support plate 12 can be rectangular structures (more squares) or round. Shaped structure, in view of the support reliability during use, the vector center of the support of the lower support plate 12 to the upper support plate 1 is approximately at the center of the lower support plate 12.

It should be understood that the center of the vector does not necessarily fall strictly on the center of the lower support plate 12 due to certain activities of the bridge support during use, but the center is the most basic reference system or design point.

Then, as shown in Figures 1 and 2, the upper surface of the upper support plate 1 is the support surface, and the lower surface of the lower support plate 12 is the installation surface. If the support surface and the installation surface are used as the front, the upper support plate 1 It is opposite to the back of the lower support plate 12, and in the initial state of installation, the centers of the upper support plate 1 and the lower support plate 12 are opposite.

In the structure shown in Fig. 1 and Fig. 2, the shock-absorbing and isolating assembly is arranged between the upper bearing plate 1 and the lower supporting plate 12, and in the initial state of installation, the center of the shock-isolating assembly, specifically the vertical The straight axis is coaxial with the centers of the upper support plate 1 and the lower support plate 12 .

Different from the prior art, Figure 1 and Figure 2 are also equipped with a ring damper 2; Figure 3 shows a structure of a ring damper 2, in the figure, it has a ring body and four ear plates 10. The ring body should be made of a material with a relatively high stiffness coefficient, such as spring steel, and the ear plate 10 can be made of steel, and the ear plate 10 is welded to the ring body.

The distribution of lug plates 10 on the ring body is uniformly distributed along the axial direction of the ring body, specifically 4 pieces, facing each other in pairs, and the two opposite directions are vertical, one pair of which is used to connect with the upper support plate 1, and the other The pair is then connected with the lower support plate 12 . Under this structure, the relatively fixed lower support plate 12 is equivalent to the seat body of the entire circular ring damper shock-absorbing support, and the movement of the upper support plate 1 will generate pull on the ring body, resulting in energy consumption. After the external force is eliminated, the ring body uses its own elasticity to reset to a certain extent.

Relatively speaking, the vibration-absorbing and isolating component is located in the through hole 3 of the circular ring damper 2. Although the structure presented is also that the circular-ring damper 2 is located on the periphery of the vibration-absorbing and isolating component, its damping is based on the whole rather than local The structural compactness in any direction is much more compact than the existing damping that relies on local structures.

However, a pair of opposite ear plates 10 are connected to the upper support plate 1 through corresponding connection holes, and the other pair of ear plates 10 are connected to the lower support plate 12 through corresponding connection holes. The configuration structure is clear and simple. Easy maintenance.

In order to eliminate interference as much as possible, the position where the upper support plate 1 is aligned with the connected ear plate 10 is provided with a seat that overhangs downwards. According to this structure, the ring damper 2 is connected with The upper support plate 1 is not in contact, so that no interference occurs, so that the reliability of the overall degree of freedom of deformation is relatively good.

Correspondingly, the position where the lower support plate 12 is aligned with the connected lug plate 10 is provided with an upwardly overhanging seat.

In addition, the through hole 3 of the circular ring damper 2 is used for accommodating the vibration-absorbing and isolating components, which are accommodated but not in contact, and also avoid being interfered by the vibration-damping and isolating components during the deformation process.

In the radial direction of the ring damper 2, the distance between the ring body of the circular arc damper 2 and the shock-absorbing and isolating assembly is not less than one-sixth of the radius of the hole of the ring damper 2, and is not greater than the hole of the ring damper one third of the radius.

Preferably, the overhanging lengths of the downwardly overhanging seat and the upwardly overhanging seat are the same, in other words, the upper surface of the ring damper 2 is at a first distance from the lower surface of the upper support plate 1, and the ring damper The lower surface of 2 and the upper surface of the lower bearing plate 12 have a second distance, which is equal to the first distance, so that as a whole, under the condition that the axial length of the ring body is constant, the distance between the upper bearing plate and the upper bearing plate is produced. 1 and the lower seat plate 12 are least likely to interfere.

In the structure shown in Fig. 1 and the figure, the seat is a screw seat 13 and a screw seat 14. Correspondingly, the connection between the lug plate 10 and the corresponding seat is a connection through a screw 11, and the connection depends on the shear resistance of the screw. Therefore, the screw 11 adopts a screw with a polished rod, and the polished rod part cooperates with the ear plate 10, which has high structural strength and strong shear resistance.

The shock-absorbing and isolating assembly shown in the figure is a basin-type shock-isolating and isolating assembly, and the basin-type shock-isolating and isolating assembly is shown as forming a pot structure 9 on the lower support plate 12, roughly having a cofferdam structure, and the shock-isolating and isolating assembly Most of the shock-absorbing and isolating parts are placed in the basin structure 9, which can play a good central positioning role.

Specifically, in some embodiments, the basin-type shock-absorbing and isolating assembly is a circular structure with a simple structure and approximately the same circumferential properties.

A rubber bearing plate 8 and an intermediate liner 7 are arranged from bottom to top in the basin of the basin structure, and a slide plate is arranged on the upper surface of the intermediate liner 7 . Among them, the rubber bearing plate 8 is used to provide shock absorption and isolation, and the slide plate is used to provide translation of the upper support plate 1 to reduce the coefficient of friction.

Grease can be sealed between the slide plate 1 and the upper bearing plate 1 and the middle liner 7 to further reduce the coefficient of friction.

Further, the slide plate is higher than the upper surface of the basin structure, so that an anti-interference distance is reserved between the lower surface of the upper support plate 1 and the upper surface of the basin structure, reducing interference points and avoiding collisions during the sliding process. To the hard constraints, and affect the slip or block, resulting in structural damage.

Further, the slide plate includes a plane slide plate 5 directly matched with the middle liner 7 and a plane stainless steel plate 4 stacked on the upper surface of the plane slide plate 5 .

In a preferred embodiment, there is a pin hole in the center of the shock-absorbing and isolating assembly, and the upper end of a safety pin 6 is connected to the upper bearing plate, and is connected to the lower bearing plate after passing through the pin hole.

Among them, the safety pin 6 is designed to match the preset seismic intensity. When the seismic intensity reaches the preset value, the shear pin 6 fails, and sliding occurs between the intermediate liner 7 and the plane sliding plate 5, which is to add a sliding pair as a whole. Participate in earthquake energy consumption.

And when the seismic intensity is lower than the preset value, the shear pin 6 will not be sheared (under ideal conditions), and there will be no relative sliding between the intermediate liner 7 and the plane slide 5, and energy will be dissipated close to its own deformation.

Claims (10)

1. A shock-absorbing and isolating support for a ring damper, including an upper support plate (1) and a lower support plate (12), and an upper support plate (1) and a lower support plate (12) The shock-absorbing and isolating assembly is characterized in that it also includes a ring damper (2); The shock-absorbing and isolating assembly is located in the through hole of the ring damper (2); Four ear plates (10) with connection holes are evenly arranged in the circumferential direction of the ring damper (2); The opposite pair of ear plates (10) are connected to the upper support plate (1) through corresponding connection holes, and the other pair of ear plates (10) are connected to the lower support plate (12) through corresponding connection holes. 2. The shock-absorbing and isolating support of the ring damper according to claim 1, characterized in that, the position where the upper support plate (1) is aligned with the connected lug plate (10) is provided with a downwardly overhanging seat ; The position where the lower support plate (12) is aligned with the connected lug plate (10) is provided with an upwardly overhanging seat. 3. The shock-absorbing and isolating support of the ring damper according to claim 2, characterized in that the lengths of the overhangs of the downwardly overhanging seat and the upwardly overhanging seat are the same. 4. The ring damper vibration-isolation support according to claim 2 or 3, characterized in that, the seat is a screw seat (13, 14), and correspondingly, the connection between the lug plate (10) and the corresponding seat for the connection via screws (11). 5 . The vibration-absorbing and isolating bearing of the ring damper according to claim 1 , wherein the vibration-absorbing and isolating assembly is a basin-type vibration-absorbing and isolating assembly. 6 . 6. The shock-absorbing and isolating bearing of the ring damper according to claim 5, wherein the basin-type shock-isolating assembly is a circular structure, and rubber bearings are arranged from bottom to top in the pot of the pot-type structure. The pressing plate (8), the middle liner (7), and a slide plate are arranged on the upper surface of the middle liner (7). 7. The shock-absorbing and isolating bearing of the ring damper according to claim 6, characterized in that, the slide plate is higher than the upper surface of the basin structure, so that the lower surface of the upper support plate (1) is in line with the basin structure. An anti-interference distance is reserved between the upper surfaces of the structures. 8. The shock-absorbing and isolation bearing of the ring damper according to claim 6, characterized in that, the slide plate includes a plane slide plate (5) directly matched with the middle lining plate (7) and a plane slide plate (5) stacked on the plane slide plate (5) ) flat stainless steel plate (4) on the upper surface. 9. The shock-absorbing and isolating support for a ring damper according to any one of claims 1, 5-8, characterized in that a pin hole is opened in the center of the shock-absorbing and isolating assembly, and the upper end of a safety pin (6) is connected to The upper support plate is connected with the lower support plate after passing through the pin holes. 10. The circular ring damper shock-absorbing support according to claim 1, characterized in that, the circular ring damper (2) is located between the upper support plate (1) and the lower support plate (12). the middle of the vertical direction.