CN111455840A - Multilayer friction damping spherical steel bearing - Google Patents

Abstract

A multi-layer friction damping spherical steel bearing, comprising an upper bearing steel plate (1) and a lower bearing steel plate (2), characterized in that a spherical crown body (3) is provided on the lower surface of the upper bearing steel plate (1) , a support body (4) is arranged below the spherical cap body (3), the outer circumference of the support body (4) is located inside the annular limit plate (5), and the upper surface of the lower support steel plate (2) is provided with The bottom friction plate (7) is provided with one or more layers of intermediate friction plates (6) stacked between the bottom friction plate (7) and the support body (4). Compared with the existing technology, the shock isolation effect and the use durability are greatly improved, and it is easier to match with the wire rope damper, reducing the Maintenance cost, economical is better.

Description

Multilayer friction damping spherical steel bearing

technical field

The invention relates to a spherical steel bearing, in particular to a multi-layer friction damping spherical steel bearing, which belongs to the technical field of anti-seismic vibration isolation.

Background technique

As important social infrastructure, bridge structures and large building structures have the characteristics of large investment, strong publicity, and difficult management and maintenance. They are an important part of the earthquake-resistant and disaster-prevention management system. Earthquakes are one of the frequent natural disasters. The direct cause of life and property losses caused by earthquakes is the violent vibration, damage and collapse of buildings. Therefore, improving the seismic performance of bridge structures and large building structures is the basic measure to reduce earthquake losses. In addition, in some key fields, shock isolation devices with excellent performance are also required, such as: nuclear power plants, high-speed railways, etc. In addition, shock isolation is also required between the bridge beams and piers of various highway bridges, railway bridges, and viaducts to meet the requirements of safe use.

The friction-type damping bearing or the steel wire rope damping ball-shaped steel bearing is the closest to the present invention in the prior art. The friction-type damping bearing adopts two spherical surfaces with different radii up and down and the matching position to form two sliding friction pairs, so as to ensure the normal bearing of the bearing. When the seismic horizontal force exceeds the threshold value, the friction pairs of the bearings overcome the static friction force to produce relative sliding, and the large radius spherical friction pairs can generate a large horizontal relative displacement, that is, the horizontal stiffness is small, so that the seismic The generated kinetic energy is converted into potential energy, and the smaller horizontal stiffness after breaking the threshold acts as a "seismic isolation". At the same time, due to the existence of frictional resistance, it plays a "damping" role and consumes a part of the seismic energy. The steel wire rope damping spherical steel bearing is a ring wire rope damper added to the periphery of the ordinary spherical steel bearing, and the dry friction of the wire rope damper is used to dissipate the seismic energy, and the sliding friction in the bearing body acts as an auxiliary energy dissipation. Whether it is a friction type damping bearing or a steel wire rope damping ball steel bearing, the friction energy dissipation method of the sliding surface is adopted. The friction energy dissipation method of the sliding surface will wear after a certain period of use. Affect the performance of shock isolation, poor durability, and shorten the service life.

SUMMARY OF THE INVENTION

The purpose of the present invention is to aim at the simple structure of the existing friction damping bearing, the larger sliding displacement during vibration reduction, the longer friction path of a single sliding surface, the serious wear, the poor vibration reduction and isolation effect and the use durability. The defects and deficiencies of short life and high maintenance cost are now provided with a reasonable structure. On the premise of ensuring the overall displacement, the friction path of a single sliding surface is greatly reduced, the wear is reduced, and the shock absorption and isolation effect and service durability are greatly improved. , multi-layer friction damping spherical steel bearings with long service life and reduced maintenance costs.

In order to achieve the purpose of the above invention, the technical solution of the present invention is: a multi-layer friction damping spherical steel bearing, including an upper bearing steel plate and a lower bearing steel plate, characterized in that: the lower surface of the upper bearing steel plate is provided with Spherical crown body, the lower surface of the spherical crown body is set as a spherical surface, a support body is arranged below the spherical crown body, the upper surface of the support body is set as an arc surface corresponding to the spherical surface of the lower end of the spherical crown body, the spherical crown body and the support body The contact surface between the bodies constitutes a spherical friction pair, the lower surface of the upper support steel plate is provided with an annular limit plate, the outer circumference of the support body is located inside the annular limit plate, and the upper surface of the lower support steel plate is provided with a bottom layer Friction plate, one or more layers of intermediate friction plates are stacked between the bottom friction plate and the support body, and a plane friction pair is formed between the support body, the intermediate friction plate and the adjacent contact planes of the bottom friction plate, the spherical cap body, the support body , A damper is arranged on the outer circumference of the middle friction plate and the bottom friction plate, and a plurality of bolt holes are evenly and symmetrically opened on the outer circumference of the support body, the middle friction plate and the bottom friction plate. And the connection between the bottom friction plates is realized by installing shear nails or shear bolts in the bolt holes, and an interlayer displacement is set between the inner and outer side walls of the adjacent supports, the middle friction plates and the bottom friction plates. Reserved space.

Further, the damper adopts a wire rope damper, and the wire rope damper includes a steel plate on the apex rope clamp, a steel plate under the apex rope clamp, a steel plate on the bottom point rope clamp, a steel plate under the bottom point rope clamp, a steel wire rope and a rope clamp, and the apex rope clamp. The upper steel plate, the lower steel plate of the apex rope clip, the upper steel plate of the bottom point rope clip, and the lower steel plate of the bottom point rope clip are all annular structures. The upper surface of the steel wire rope is fixed with a bottom point rope clip on the steel plate, the steel wire ropes are multiple and wound into a ring-shaped spiral structure, and the two ends of each steel wire rope are respectively fixed on the bottom point rope clip on the steel plate or the bottom point rope through the rope clip. Clamp on the steel plate.

Further, the bottom surface of the upper support steel plate and the inner circular surface of the annular limit plate is covered with a stainless steel plate, and the flat sliding plate embedded in the upper end of the spherical cap is in contact with the stainless steel plate.

Further, the upper surface of the lower support steel plate is integrally provided with a ring-shaped limit plate, the upper surface of the lower support steel plate and the inner circular bottom surface inside the limit plate is covered with a stainless steel plate, and the bottom friction plate is provided with a stainless steel plate. The lower surface is inlaid with a sliding plate and the stainless steel plate to form a plane sliding friction pair.

Further, a stainless steel plate is laid on the central circular area of the lower surface of the support body, and a sliding plate is provided on the arc surface of the upper end of the support body.

Further, the bolt holes opened on the support body, the middle friction plate and the bottom friction plate are divided into bolt holes on the sliding surface of this layer and bolt holes on the sliding surface of the adjacent layer, and bolt holes on the sliding surface of this layer and bolts on the sliding surface of the adjacent layer. The pores are alternately distributed.

Further, the middle part of the upper surface of the intermediate friction plate is set as a circular convex surface, the circular convex surface is inlaid with a sliding plate, and the lower surface of the intermediate friction plate is provided with a limiting plate, which is in contact with the stainless steel plate on the bottom of the support body, or is in contact with the bottom of the support body. The stainless steel plates on the lower surface of the adjacent intermediate friction plates are in contact to form a sliding friction pair.

Further, a sliding plate is provided on the upper surface of the middle friction plate and/or the bottom friction plate.

Further, the friction coefficient of the spherical friction pair is less than or equal to 0.03, and the friction coefficient of the plane friction pair that plays a damping role in the plane friction pair is greater than 0.05.

Further, a dust cover with certain elasticity is provided on the outer circumference or the periphery between the upper support steel plate and the lower support steel plate.

The beneficial effects of the present invention are:

1. The invention adopts a multi-layer friction plate structure, and a multi-layer sliding surface is formed between the support body, the middle friction plate, the bottom friction plate and the lower bearing steel plate, so that the cumulative displacement of each sliding surface is equal to the total displacement, and the total displacement of the structure is satisfied. demand, to achieve the predetermined shock absorption effect.

2. In the present invention, shearing nails or shearing bolts are arranged between each friction plate, and through the precise selection of the strength of the shearing nails or shearing bolts and the precise control of the friction coefficient of the sliding surface, the function before the earthquake can be selected. The sliding friction pair and the sliding friction pair that only works when the earthquake occurs, realizes the differentiated control.

3. The invention has a reasonable structure, and the relative displacement of a single sliding surface is much smaller than the total displacement. Compared with other bearings that consume energy through friction, the friction path of a single sliding surface is greatly reduced, that is, the wear of the bearing is reduced, that is, the friction path of the single sliding surface is greatly reduced. The service life of the bearing is greatly improved.

4. The invention has a compact structure, has the functions of an ordinary steel wire rope damper and a spherical steel bearing, has a good shock-absorbing and isolating effect, and achieves good use durability. Compared with the prior art, the shock-absorbing effect and the use of The durability is greatly improved, and at the same time, it is easier to match with the wire rope damper, which reduces the maintenance cost and is more economical.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

FIG. 2 is a schematic structural diagram of the present invention when the wire rope damper is not installed.

FIG. 3 is a schematic structural diagram of the upper bearing steel plate of the present invention.

FIG. 4 is a side view of FIG. 3 .

FIG. 5 is a schematic structural diagram of the lower bearing steel plate of the present invention.

FIG. 6 is a side view of FIG. 5 .

FIG. 7 is a schematic view of the structure of the support body of the present invention.

Fig. 8 is a schematic view of the structure of the intermediate friction plate of the present invention.

FIG. 9 is a plan view of FIG. 8 .

Fig. 10 is a schematic view of the structure of the bottom friction plate of the present invention.

FIG. 11 is a plan view of FIG. 10 .

Figure 12 is a schematic structural diagram of the wire rope damper of the present invention.

Figure 13 is a plan view of the wire rope damper of the present invention.

Fig. 14 is a state diagram of the present invention when sliding displacement occurs.

In the figure: steel plate 1 for upper bearing, steel plate 2 for lower bearing, spherical cap 3, support 4, annular limit plate 5, middle friction plate 6, bottom friction plate 7, spherical friction pair 8, plane friction pair 9, Wire rope damper 10, steel plate 11 on the top rope clamp, steel plate 12 below the top rope clamp, steel plate 13 on the bottom point rope clamp, steel plate 14 under the bottom point rope clamp, steel wire rope 15, rope clamp 16, bolt holes 17 on the sliding surface of this layer, The sliding surface bolt holes 18 of the adjacent layers, the shear nails 19, the lower support bolt holes 20, the interlayer displacement reserved space 21, and the dust cover 22.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

1 to 14, the multi-layer friction damping spherical steel bearing of the present invention includes an upper bearing steel plate 1 and a lower bearing steel plate 2, and is characterized in that: the lower surface of the upper bearing steel plate 1 is provided with a spherical cap Body 3, the lower surface of the spherical cap body 3 is set as a spherical surface, a support body 4 is set below the spherical cap body 3, and the upper surface of the support body 4 is set as an arc surface corresponding to the spherical surface of the lower end of the spherical cap body 3, The contact surface between the crown body 3 and the support body 4 constitutes a spherical friction pair 8, the lower surface of the upper bearing steel plate 1 is provided with an annular limit plate 5, and the outer circumference of the support body 4 is located inside the annular limit plate 5, so The upper surface of the lower bearing steel plate 2 is provided with a bottom friction plate 7, and one or more layers of intermediate friction plates 6 are stacked between the bottom friction plate 7 and the supporting body 4. The supporting body 4, the intermediate friction plate 6 and the bottom friction plate 7. A plane friction pair 9 is formed between the adjacent contact planes. The spherical crown body 3, the support body 4, the middle friction plate 6 and the bottom friction plate 7 are provided with wire rope dampers 10 on the outer circumference. The support body 4, the middle friction plate 6 and the outer circumference of the bottom friction plate 7 are respectively uniformly and symmetrically provided with a plurality of bolt holes, and between the adjacent supporting bodies 4, the middle friction plate 6 and the bottom friction plate 7, shear nails 19 or shears are installed in the bolt holes. The connection is achieved by force bolts, and an interlayer displacement reserved space 21 is provided between the inner and outer side walls between the adjacent supports 4 , the intermediate friction plates 6 and the bottom friction plates 7 .

The damper adopts a wire rope damper 10, and the wire rope damper 10 includes a steel plate 11 on the apex rope clamp, a steel plate 12 under the apex rope clamp, a steel plate 13 on the bottom point rope clamp, a steel plate 14 under the bottom point rope clamp, a steel wire rope 15 and a rope clamp. 16. The upper steel plate 11 of the vertex rope clip, the lower steel plate 12 of the vertex rope clamp, the upper steel plate 13 of the bottom point rope clamp, and the lower steel plate 14 of the bottom point rope clamp are all annular structures. The lower steel plate 12 is clamped, the upper surface of the lower steel plate 14 of the bottom point rope clamp is fixedly provided with the bottom point rope clamp upper steel plate 13, the steel wire ropes 15 are multiple and are respectively wound into a ring-shaped spiral structure, and the two ends of each steel wire rope 15 are respectively It is fixed on the lower steel plate 12 of the apex rope clamp or the upper steel plate 13 of the bottom point rope clamp through the rope clamp 16 .

The bottom surface of the upper bearing steel plate 1 and the inner circular surface of the annular limit plate 5 are covered with a stainless steel plate, and the flat sliding plate embedded in the upper end of the spherical cap body 3 is in contact with the stainless steel plate.

The upper surface of the lower support steel plate 2 is integrally provided with a ring-shaped limit plate, the upper surface of the lower support steel plate 2 and the inner circular bottom surface inside the limit plate is covered with a stainless steel plate, and the bottom friction plate 7 is provided with a stainless steel plate. The lower surface is inlaid with a sliding plate and the stainless steel plate to form a plane sliding friction pair.

A stainless steel plate is laid on the central circular area of the lower surface of the support body 4 , and a sliding plate is provided on the arc surface of the upper end of the support body 4 .

The bolt holes opened on the support body 4, the middle friction plate 6 and the bottom friction plate 7 are divided into bolt holes 17 on the sliding surface of this layer and bolt holes 18 on the sliding surface of the adjacent layer, and bolt holes 17 on the sliding surface of this layer and the adjacent layer. The sliding surface bolt holes 18 are alternately distributed.

The middle part of the upper surface of the intermediate friction plate 6 is set as a circular convex surface, the circular convex surface is inlaid with a slide plate, and the lower surface of the intermediate friction plate 6 is provided with a ring-shaped limit plate, which is in line with the stainless steel plate on the bottom of the support body 4. Contact, or contact with the stainless steel plate on the lower surface of the adjacent intermediate friction plate 6 to form a sliding friction pair.

The upper surface of the middle friction plate 6 and/or the bottom friction plate 7 is provided with a sliding plate.

The friction coefficient of the spherical friction pair 8 is less than or equal to 0.03, and the friction coefficient of the plane friction pair 9 that plays a damping role in the plane friction pair 9 is greater than 0.05.

A dust cover 22 with a certain elasticity is provided on the outer circumference or the periphery between the upper support steel plate 1 and the lower support steel plate 2 .

Referring to Figure 1 of the description, the present invention is mainly composed of a damper and a multi-layer friction damping spherical steel bearing, and the damper is arranged on the periphery of the multi-layer friction damping spherical steel bearing. The damper can adopt various structural forms, such as the wire rope damper 10, which is used to absorb and dissipate the energy brought by earthquake or other vibrations, so as to achieve the purpose of vibration isolation. The wire rope damper 10 can adopt various structural forms, and the optimal structural form is as follows: the wire rope damper 10 includes a steel plate 11 on the top rope clamp, a steel plate 12 on the bottom rope clamp, a steel plate 13 on the bottom rope clamp, and a bottom rope clamp plate 13. The steel plate 14, the wire rope 15 and the rope clip 16, the upper steel plate 11 of the vertex rope clamp, the lower steel plate 12 of the vertex rope clamp, the upper steel plate 13 of the bottom point rope clamp and the lower steel plate 14 of the bottom point rope clamp are all annular structures, and the upper steel plate 11 of the vertex rope clamp The lower surface of the apex rope clip lower steel plate 12 is fixedly arranged, the upper surface of the bottom point rope clip lower steel plate 14 is fixedly arranged with the bottom point rope clip upper steel plate 13, the steel wire ropes 15 are multiple and are respectively wound into a ring-shaped spiral structure, Each wire rope 15 is formed by winding multiple strands of steel wire into one strand, and the two ends of each wire rope 15 are respectively fixed on the lower steel plate 12 of the vertex rope clamp or the upper steel plate 13 of the bottom point rope clamp through the rope clamp 16 .

The multi-layer friction damping spherical steel bearing mainly includes an upper bearing steel plate 1 , a lower bearing steel plate 2 , a spherical cap 3 , a supporting body 4 , a middle friction plate 6 and a bottom friction plate 7 . The upper support steel plate 1 can be a rectangular steel plate structure or a circular steel plate structure. The lower surface of the upper support steel plate 1 is provided with an annular limit plate 5, and the bottom surface of the upper support steel plate 1 is located in the inner circular limit plate 5. A stainless steel plate is laid on the surface, and a vertex rope clip upper steel plate 11 is fixedly arranged on the lower surface of the upper support steel plate 1 and on the periphery of the annular limit plate 5 .

The lower surface of the upper bearing steel plate 1 is provided with a spherical cap body 3, the upper end of the spherical cap body 3 is set as a circular horizontal plane, the lower part of the spherical cap body 3 is set as a spherical surface, and a support body 4 is provided below the spherical cap body 3, which supports the The upper surface of the body 4 is set as a concave arc surface corresponding to the lower end spherical surface of the spherical cap body 3, the spherical surface of the spherical cap body 3 is matched with the concave arc surface of the support body 4, and the spherical cap body 3 and the support body 4 are matched. The contact surfaces between them form a spherical friction pair 8, which enables the spherical cap body 3 to swing slightly at any angle on the support body 4 to satisfy the rotation function. At the same time, the upper part of the outer side surface of the support body 4 is located inside the annular limiting plate 5 , and the annular limiting plate 5 can play a certain limiting role on the periphery of the support body 4 . In order to avoid the direct contact friction on the lower surface of the upper bearing steel plate 1, reduce wear and improve the service life, a stainless steel plate is laid on the bottom surface of the upper bearing steel plate 1 and on the inner circular surface of the annular limit plate 5, and the spherical cap body 3 The sliding plate inlaid on the circular upper surface is in contact with the stainless steel plate. The plane friction coefficient between the upper bearing steel plate 1 and the spherical cap body 3 and the spherical friction coefficient between the spherical cap body 3 and the support body 4 are not very high, generally not exceeding 0.03.

The lower support steel plate 2 is located at the bottom of the present invention. The lower support steel plate 2 can be a rectangular steel plate structure or a circular steel plate structure. The upper surface of the lower support steel plate 2 is integrally provided with a ring-shaped limit plate. There are bolt holes for installing shear nails 19 or shear bolts. Similarly, in order to avoid direct contact friction on the upper surface of the lower support steel plate 2, a stainless steel plate is also laid on the upper surface of the lower support steel plate 2 and on the inner circular bottom surface inside the limiting plate.

The upper surface of the lower support steel plate 2 is provided with a bottom friction plate 7, the bottom friction plate 7 is a disc-shaped structure with convexities on both sides, and the bottom convex structure of the bottom friction plate 7 can be placed on the limit plate on the lower support steel plate 2. To slide in the enclosed pelvic cavity, the convex structure on the upper surface of the bottom friction plate 7 can slide in the pelvic cavity enclosed by the limit plate of the middle friction plate 6 . In order to meet the needs of the sliding displacement of the bottom friction plate 7 in the pelvic cavity of the lower bearing steel plate 2 and the middle friction plate 6, reserved between the lower bearing steel plate 2 and the middle friction plate 6 limit plate and the bottom friction plate 7 convex structure Interlayer displacement space 21 .

The outer circumference of the bottom friction plate 7 is evenly and symmetrically provided with a plurality of bolt holes, and the bolt holes are connected between the bottom friction plate 7 and the lower bearing steel plate 2 through shear nails 19 or shear bolts. Shear nails 19 or shear bolts may be installed between the bottom friction plate 7 and the lower support steel plate 2, or not. When installing shear nails 19 or shear bolts, the sliding displacement limit can be controlled by configuring shear nails 19 or shear bolts with different strengths. When the earthquake horizontal force is large enough, the shear nails 19 or shear bolts can only be used. It will be damaged, and the bottom friction plate 7 will slide on the lower bearing steel plate 2; when the shear nails 19 or shear bolts are not installed, the bottom friction plate 7 and the lower bearing steel plate 2 can slide freely, which can meet the support requirements. The need for conventional deformation of the seat, such as temperature deformation.

One or more layers of intermediate friction plates 6 are arranged between the bottom of the support body 4 and the top of the bottom friction plate 7. The upper end of the intermediate friction plate 6 is a convex disc structure, and the lower end is a pelvic cavity structure enclosed by a limit plate. A plurality of bolt holes are evenly and symmetrically opened on the position plate. The protruding structure on the middle friction plate 6 located below the support body 4 is matched with the pelvic cavity structure at the lower end of the support body 4 , and the two are in contact with each other through a plane friction pair 9 . The protruding structure at the upper end of the bottom friction plate 7 is matched with the pelvic region at the lower end of the upper middle friction plate 6 , and the two are in contact with each other through a plane friction pair 9 . In the same way, if it is a multi-layer intermediate friction plate 6, it is formed by stacking each intermediate friction plate 6 one by one, and the horizontal contact surface between the adjacent intermediate friction plates 6 constitutes a plane friction pair 9. Under the action of external force Ability to swipe horizontally.

In order to improve the frictional energy absorption effect of the present invention, in the present invention, sliding plates are respectively provided on the convex structure surfaces of the upper ends of the middle friction plate 6 and the bottom friction plate 7, and are laid in the pelvic cavity area of the lower ends of the middle friction plate 6 and the bottom friction plate 7. There are stainless steel plates, which constitute a sliding friction pair. Between the support body 4 and the middle friction plate 6, between two adjacent middle friction plates 6, and between the middle friction plate 6 and the bottom friction plate 7, the friction coefficient between the bottom friction plate 7 and the lower support plate 2 can be Adjustment to meet the needs of different frictional energy dissipation.

In the event of an earthquake, when the horizontal force of the earthquake is large enough, the shear nails 19 or shear bolts connecting the adjacent layers of the support body 4, the intermediate friction plate 6 and the bottom friction plate 7 from top to bottom are sheared in sequence, and the friction plate is cut off in sequence. Relative sliding occurs between layers, and both the wire rope damper 10 and the support body are deformed, consuming seismic energy. The total displacement produced by the wire rope damper and the bearing body is the accumulation of the relative displacement of each sliding surface. Obviously, the more friction surfaces, under the condition of a certain total displacement, the smaller the relative sliding displacement of each sliding surface, that is, the shorter the friction path, thereby reducing the wear of the friction pair and improving the invention service life.

The installation method of the hoop wire rope and the multi-layer friction damping spherical steel bearing of the present invention is as follows: first, the wire rope damper segment is prefabricated, the wire rope of a certain specification is wound into a ring, and the wire rope 15 is fixed by the rope clamp 16 from the upper and lower directions. , Process the upper support steel plate 1, the lower support steel plate 2, the spherical crown body 3, the support body 4, the annular limit plate 5, the middle friction plate 6 and the bottom friction plate 7. A stainless steel plate is laid on the upper surface of the lower support steel plate 2, and the lower part of the wire rope damper segment is mounted on the lower support steel plate 2 through connecting bolts. The bottom friction plate 7 is installed on the lower support steel plate 2, and is connected and fixed with shear nails 19 or shear bolts. Then install one or more layers of intermediate friction plates 6 in sequence, and align the bolt holes, and between the intermediate friction plate 6 of the upper layer and the intermediate friction plate 6 of the next layer or the bottom friction plate 7 located below pass shear nails 19 or shear bolts for connection and fixation. Afterwards, the support body 4 is installed, and the support body 4 is installed on the upper end of the middle friction plate 6 located on the uppermost layer, and is connected and fixed with shear nails 19 or shear bolts. Then install the spherical cap body 3 and its components, install the spherical surface at the lower end of the spherical cap body 3 on the arc surface at the upper end of the support body 4, and the contact surface between the spherical cap body 3 and the support body 4 constitutes the spherical friction pair 8. Finally, the upper bearing steel plate 1 is installed so that the lower surface of the upper bearing steel plate 1 is in contact with the upper end horizontal surface of the spherical cap body 3, and the wire rope damper 10 and the upper bearing steel plate 1 are fixed with connecting bolts, and the upper bearing plate 1 is fixed on the upper bearing plate. A dust cover 22 is installed on the periphery between the steel plate 1 and the lower support steel plate 2 to complete the installation operation.

The above content is a further detailed description of the present invention in conjunction with the specific embodiments, and it should not be considered that the specific implementation of the present invention is limited to these descriptions. Hereinafter, any simple modifications and substitutions made should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. Multilayer friction damping ball-type steel support, including upper bracket steel sheet (1) and undersetting steel sheet (2), its characterized in that: the lower surface of the upper support steel plate (1) is provided with a spherical crown body (3), the lower surface of the spherical crown body (3) is set to be a spherical surface, a support body (4) is arranged below the spherical crown body (3), the upper surface of the support body (4) is set to be a circular arc surface corresponding to the lower end spherical surface of the spherical crown body (3), a contact surface between the spherical crown body (3) and the support body (4) forms a spherical friction pair (8), the lower surface of the upper support steel plate (1) is provided with an annular limiting plate (5), the outer circumference of the support body (4) is positioned inside the annular limiting plate (5), the upper surface of the lower support steel plate (2) is provided with a bottom friction plate (7), one or more layers of middle friction plates (6) are stacked between the bottom friction plate (7) and the support body (4), and a plane friction pair (9) is formed between adjacent contact planes of the support body (4), the middle friction plate (6, the spherical cap body (3), the supporting body (4), the middle friction plate (6) and the bottom friction plate (7) are provided with dampers on the peripheral circumference, a plurality of bolt holes are respectively and uniformly and symmetrically formed in the outer circumferences of the supporting body (4), the middle friction plate (6) and the bottom friction plate (7), the adjacent supporting body (4), the middle friction plate (6) and the bottom friction plate (7) are connected through installing shear nails (19) or shear bolts in the bolt holes, and interlayer displacement reserved spaces (21) are formed between the inner side wall and the outer side wall between the adjacent supporting body (4), the middle friction plate (6) and the bottom friction plate (7).

2. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the steel wire rope damper is characterized by adopting a steel wire rope damper (10), wherein the steel wire rope damper (10) comprises a top rope clamp upper steel plate (11), a top rope clamp lower steel plate (12), a bottom rope clamp upper steel plate (13), a bottom rope clamp lower steel plate (14), a steel wire rope (15) and a rope clamp (16), the top rope clamp upper steel plate (11), the top rope clamp lower steel plate (12), the bottom rope clamp upper steel plate (13) and the bottom rope clamp lower steel plate (14) are all of annular structures, the top rope clamp lower steel plate (12) is fixedly arranged on the lower surface of the top rope clamp upper steel plate (11), the bottom rope clamp upper steel plate (13) is fixedly arranged on the upper surface of the bottom rope clamp lower steel plate (14), the steel wire ropes (15) are multiple and are respectively wound into annular spiral structures, two ends of each steel wire rope (15) are respectively fixed on the lower steel plate (12) of the top rope clamp or the upper steel plate (13) of the bottom rope clamp through rope clamps (16).

3. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the bottom surface of the upper support steel plate (1) and the inner circular surface of the annular limiting plate (5) are laid with a stainless steel plate, and a plane sliding plate embedded at the upper end of the spherical crown body (3) is in contact with the stainless steel plate.

4. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the upper surface integration of undersetting steel sheet (2) is provided with and is annular limiting plate, lays the corrosion resistant plate on the upper surface of undersetting steel sheet (2) and the interior circle bottom surface that is located the limiting plate inside, and the lower surface of bottom friction plate (7) is inlayed and is had the slide with corrosion resistant plate constitutes the plane sliding friction pair.

5. The multilayer friction damping ball-type steel standoff of claim 1 wherein: a stainless steel plate is laid in the circular area in the middle of the lower surface of the supporting body (4), and a sliding plate is arranged on the arc surface of the upper end of the supporting body (4).

6. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the bolt holes formed in the supporting body (4), the middle friction plate (6) and the bottom friction plate (7) are divided into a sliding surface bolt hole (17) in the layer and a sliding surface bolt hole (18) in the adjacent layer, and the sliding surface bolt holes (17) in the layer and the sliding surface bolt holes (18) in the adjacent layer are alternately distributed.

7. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the middle of the upper surface of the middle friction plate (6) is a circular convex surface, a sliding plate is inlaid on the circular convex surface, and the lower surface of the middle friction plate (6) is provided with an annular limiting plate which is in contact with a stainless steel plate on the bottom of the supporting body (4) or is in contact with a stainless steel plate on the lower surface of the adjacent middle friction plate (6) to form a sliding friction pair.

8. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the upper surfaces of the middle friction plate (6) and/or the bottom friction plate (7) are provided with sliding plates.

9. The multilayer friction damping ball-type steel standoff of claim 1 wherein: the friction coefficient of the spherical friction pair (8) is less than or equal to 0.03, and the friction coefficient of the plane friction pair (9) playing a damping role in the plane friction pair (9) is greater than 0.05.

10. The multilayer friction damping ball-type steel standoff of claim 1 wherein: and a dust cover (22) with certain elasticity is arranged on the outer circumference or the periphery between the upper support steel plate (1) and the lower support steel plate (2).

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