CN213681694U

CN213681694U - Friction pendulum support

Info

Publication number: CN213681694U
Application number: CN202021511101.2U
Authority: CN
Inventors: 孔令俊; 陈彦北; 何俊
Original assignee: Zhuzhou Times New Material Technology Co Ltd
Current assignee: Zhuzhou Times New Material Technology Co Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-07-13
Anticipated expiration: 2030-07-27

Abstract

The utility model provides a friction pendulum support, which comprises an upper seat plate component, a lower seat plate component and a spherical crown lining plate which is arranged between the upper seat plate component and the lower seat plate component in a sliding way, wherein an anti-falling beam limiting component which limits the sliding displacement of the upper seat plate component and the spherical crown lining plate is arranged between the upper seat plate component and the spherical crown lining plate; the lower seat plate component comprises a bottom plate, a lower seat plate and a locking component, the lower seat plate is adaptive to temperature displacement under normal working conditions, the locking component is used for locking the sliding position of the bottom plate and the lower seat plate when seismic displacement is larger than the temperature displacement, the lower seat plate is arranged between the bottom plate and the spherical crown lining plate in a sliding mode, and the locking component is arranged between the lower seat plate and the bottom plate. The utility model has the advantages of prevent that the bridge from falling the roof beam, and simple structure, occupation space are little.

Description

Friction pendulum support

Technical Field

The utility model relates to a bridge beam supports technical field especially relates to a friction pendulum support.

Background

In recent years, seismic isolation and reduction technologies have been widely applied to various buildings and bridge engineering. The friction pendulum support is taken as a typical seismic isolation and reduction support, the main principle is that the basic natural vibration period of the structure is greatly prolonged through a specific arc surface, and seismic energy is converted into heat energy through a material with high wear resistance, high temperature resistance and stable and adjustable friction coefficient, so that the purposes of seismic isolation and energy consumption are achieved. However, the existing friction pendulum support has the following problems:

(1) the conventional friction pendulum support structure easily causes the support to deform beyond the designed displacement, so that dangerous conditions such as bridge falling and the like occur; (2) the speed locking device of the existing friction pendulum support is connected with a double-spherical seismic isolation and reduction support body in series, the plane size is large, the locking force and the size required by the speed locking device are large under the same load, and the practical engineering application is inconvenient; (3) the size of a guide block of the conventional friction pendulum support is large, so that the thickness of a bottom plate is thick, and the processing and manufacturing difficulty is high; and the existing speed locking device has a complex structure and is difficult to process.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind and prevent that the bridge from falling the roof beam, and simple structure, the little friction pendulum support of occupation space.

In order to solve the technical problem, the utility model provides a technical scheme does:

a friction pendulum support comprises an upper seat plate assembly, a lower seat plate assembly and a spherical crown lining plate which is arranged between the upper seat plate assembly and the lower seat plate assembly in a sliding mode, wherein a beam falling prevention limiting assembly which limits sliding displacement of the upper seat plate assembly and the spherical crown lining plate is arranged between the upper seat plate assembly and the spherical crown lining plate; the lower seat plate component comprises a bottom plate, a lower seat plate and a locking component, the lower seat plate is adaptive to temperature displacement under normal working conditions, the locking component is used for locking the sliding position of the bottom plate and the lower seat plate when seismic displacement is larger than the temperature displacement, the lower seat plate is arranged between the bottom plate and the spherical crown lining plate in a sliding mode, and the locking component is arranged between the lower seat plate and the bottom plate.

As a further improvement of the above technical solution:

the beam falling prevention limiting assembly comprises a vertical limiting part arranged at the bottom end of the outer edge of the upper seat plate assembly and a limiting bulge arranged at the periphery of the spherical crown lining plate, and the limiting bulge is tightly supported against the vertical limiting part when the support is slidably moved to the limiting position.

The beam falling prevention limiting assembly further comprises a horizontal limiting part, wherein the horizontal limiting part is arranged at the inner side of the bottom end of the vertical limiting part so as to form a limiting groove matched with the limiting protrusion in an inserting mode.

The locking components are arranged on two sides of the lower support plate and are perpendicular to the sliding direction of the lower support plate.

The locking component comprises a piston type speed locker, two locker mounting blocks arranged on a bottom plate and two limiting blocking parts arranged on a lower support plate, wherein the piston type speed locker is arranged along the sliding direction of the lower support plate, and two ends of the piston type speed locker are arranged on the bottom plate through the locker mounting blocks; the two limit blocking parts are arranged at two ends of a cylinder body of the piston type speed locker, and a through groove for a piston rod of the piston type speed locker to pass through is formed in the limit blocking parts.

The limiting blocking part comprises an upper limiting block, a lower limiting block and a fastening bolt, the upper limiting block and the lower limiting block are arranged oppositely to form the through groove, and the upper limiting block and the lower limiting block are detachably mounted on the lower support plate through the fastening bolt.

The lower support plate is slidably arranged on the bottom plate through a sliding assembly, the sliding assembly comprises a guide groove arranged in the middle of the bottom plate and a sliding block arranged in the middle of the lower support plate, and the sliding block is in sliding fit with the guide groove.

Be equipped with the antifriction plate in the guide slot, the side and the bottom surface of slider are equipped with corrosion resistant plate.

And the sliding friction coefficient a between the bottom plate and the lower support plate is smaller than the sliding friction coefficient b between the spherical crown lining plate and the upper seat plate component and smaller than the sliding friction coefficient c between the spherical crown lining plate and the lower seat plate component.

A sliding surface friction pair is arranged between the upper plane of the spherical crown lining plate and the upper seat plate assembly, a rotating surface friction pair is arranged between the lower spherical surface of the spherical crown lining plate and the concave spherical surface of the lower support plate, and a plane friction pair is arranged between the lower plane of the lower support plate and the bottom plate.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses be provided with between last bedplate subassembly and the spherical crown welt and prevent the spacing subassembly of roof beam that falls for can restrict the relative position of bedplate subassembly and spherical crown welt when the support slides and surpass the maximum design displacement, guarantee support safety, reliable work in order to prevent the emergence of bridge roof beam phenomenon that falls.

Meanwhile, the lower support plate assembly comprises a bottom plate, a lower support plate and a locking component, the lower support plate is slidably arranged between the bottom plate and the spherical crown lining plate and can adapt to temperature displacement under normal working conditions, the locking component is arranged between the lower support plate and the bottom plate, the sliding position of the bottom plate and the lower support plate can be locked when the seismic displacement is larger than the temperature displacement, and the shock isolation period of the support can be prolonged through the reciprocating swing of the spherical surface of the spherical crown lining plate. The support has a simple structure and small occupied space, realizes the separation of earthquake displacement and temperature displacement, namely adopts different sliding fit to adapt to the earthquake and the temperature displacement, so that the support locks the plane to slide when the earthquake occurs, avoids the collision and impact phenomenon caused by the plane sliding, and improves the safety and reliability of the support when the earthquake occurs and prolongs the service life of the support; and the support adapts to temperature displacement through plane sliding, the phenomenon of vertical lifting of the bridge when the spherical surface slides is avoided, and the smoothness of the upper structure of the bridge deck is ensured.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a front view of the friction pendulum support of the present invention.

Fig. 2 is a top view of the friction pendulum support of the present invention (upper seat plate assembly omitted).

The reference numerals in the figures denote:

1. an upper seat plate assembly; 2. a lower seat plate assembly; 21. a base plate; 22. a lower support plate; 23. a locking member; 231. a piston-type speed locker; 232. a locker mounting block; 233. a limit stop part; 234. a through groove; 235. an upper limit block; 236. a lower limiting block; 237. fastening a bolt; 3. a spherical cap liner plate; 4. the anti-falling beam limiting assembly; 41. a vertical limiting member; 42. a limiting bulge; 43. a horizontal limit piece; 44. a limiting groove; 5. a sliding assembly; 51. a guide groove; 52. a slider; 6. a sliding surface friction pair; 7. a rotating surface friction pair; 8. and (5) a plane friction pair.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples, but the scope of the invention is not limited thereto.

As shown in fig. 1 and fig. 2, the friction pendulum support of the present embodiment includes an upper seat plate assembly 1, a lower seat plate assembly 2, and a spherical cap liner plate 3. Wherein, on the upper seat plate subassembly 1 was fixed in the bridge bottom plate, lower seat plate subassembly 2 was fixed in on the pier, spherical crown welt 3 cunning was located between upper seat plate subassembly 1 and lower seat plate subassembly 2 to satisfy bridge multidirectional big corner and displacement requirement. In this embodiment, be equipped with between upper plate subassembly 1 and the spherical crown welt 3 and prevent falling spacing subassembly 4 of roof beam for can restrict the relative position of upper plate subassembly 1 and spherical crown welt 3 when the support slides and surpasss the maximum design displacement, in order to prevent the emergence of bridge roof beam phenomenon, guarantee support safety, reliable work.

Meanwhile, the lower seat plate assembly 2 comprises a bottom plate 21, a lower seat plate 22 and a locking component 23, the lower seat plate 22 is slidably arranged between the bottom plate 21 and the spherical crown lining plate 3, the lower seat plate 22 can adapt to temperature displacement under normal working conditions, the locking component 23 is arranged between the lower seat plate 22 and the bottom plate 21, the sliding position of the bottom plate 21 and the lower seat plate 22 can be locked when seismic displacement is larger than temperature displacement, and the support shock isolation period can be prolonged through the reciprocating swing of the spherical surface of the spherical crown lining plate 3. The support has a simple structure and small occupied space, realizes the separation of earthquake displacement and temperature displacement, namely adopts different sliding fit to adapt to the earthquake and the temperature displacement, so that the support locks the plane to slide when the earthquake occurs, avoids the collision and impact phenomenon caused by the plane sliding, and improves the safety and reliability of the support when the earthquake occurs and prolongs the service life of the support; and the support adapts to temperature displacement through plane sliding, the phenomenon of vertical lifting of the bridge when the spherical surface slides is avoided, and the smoothness of the upper structure of the bridge deck is ensured.

As shown in fig. 1, the anti-drop beam limiting assembly 4 further includes a vertical limiting member 41 and a limiting protrusion 42. Wherein, the vertical locating part 41 is arranged at the bottom end of the outer edge of the upper seat plate component 1, and the limiting bulge 42 is arranged at the periphery of the spherical crown lining plate 3. The limiting structure is simple, and the limiting protrusion 42 abuts against the vertical limiting part 41 when the support slides to the limiting position, so that the upper seat plate assembly 1 is prevented from being separated from the spherical crown lining plate 3 to cause the bridge to fall.

Furthermore, the anti-falling beam limiting assembly 4 further comprises a horizontal limiting piece 43, the horizontal limiting piece 43 is arranged on the inner side of the bottom end of the vertical limiting piece 41 to form a limiting groove 44 in a surrounding manner, and the limiting protrusion 42 is inserted into the limiting groove 44 when abutting against the vertical limiting piece 41 to further prevent the upper seat plate assembly 1 from being separated from the spherical crown lining plate 3.

As shown in fig. 1 and 2, the locking members 23 are provided in two sets, and the two sets of locking members 23 are disposed on both sides of the lower seat plate 22 and perpendicular to the sliding direction of the lower seat plate 22. The utility model discloses locate the both sides of bottom suspension board 22 with locking part 23, the overall arrangement is compact, and it need not additionally to increase the support size, and the required locking force of support under the same load is little.

In this embodiment, each set of locking elements 23 includes a piston-type speed lock 231, two lock mounting blocks 232, and two limit stops 233. Wherein, the locker mounting block 232 is mounted on the base plate 21; the piston type speed locker 231 is arranged along the sliding direction of the lower seat plate 22, and both ends of the piston type speed locker 231 are mounted on the bottom plate 21 through corresponding locker mounting blocks 232; the limit stoppers 233 are installed on the lower support plate 22, and the two limit stoppers 233 are respectively provided at both ends of the cylinder of the piston type speed locker 231 to limit the horizontal movement of the lower support plate 22 when the piston type speed locker 231 is locked; the limit stop 233 is provided with a through slot 234 so that the piston rod of the piston speed locker 231 can axially move through the limit stop 233. In this embodiment, the medium inside the piston-type speed locker 231 is silicone oil or cement.

When the piston rod of the piston type speed locker 231 moves relatively to the cylinder body at a small speed such as temperature, the bottom plate 21 and the lower support plate 22 move relatively to each other, and the normal use of the support is not affected; when the piston rod of the piston type speed locker 231 is relatively locked with the cylinder body when the piston rod is displaced at a large speed such as braking force, wind load or earthquake load, the aim of automatic locking at a high speed is fulfilled, the synchronous vibration reduction of the support is realized, and the damage of the support and the pier caused by the stress of the local support and the pier is avoided. The locking device is quick and convenient, high in efficiency, simple and compact in structure and small in occupied space.

Further, the limit stopper 233 includes an upper limit block 235, a lower limit block 236 and a fastening bolt 237, the upper limit block 235 and the lower limit block 236 are arranged relatively to form a through groove 234 for the piston rod to pass through, the upper limit block 235 and the lower limit block 236 are detachably mounted on the lower support plate 22 through the fastening bolt 237, which facilitates disassembly and maintenance and is easy to process.

As shown in fig. 1, in the present embodiment, the lower seat plate 22 is slidably disposed on the bottom plate 21 through the sliding assembly 5, the sliding assembly 5 includes a guide groove 51 and a sliding block 52, the guide groove 51 is disposed in the middle of the bottom plate 21, the sliding block 52 is disposed in the middle of the lower seat plate 22, and the sliding block 52 is slidably engaged with the guide groove 51. The utility model discloses a 5 simple structure of sliding assembly has reduced bottom plate 21 and has set up thickness, makes the bearing structure compacter.

Meanwhile, a lubricating medium is provided between the guide groove 51 and the slider 52 to reduce sliding frictional resistance. When the friction pendulum support is a longitudinal support, the guide groove 51 and the slide block 52 are arranged longitudinally, and the transverse displacement of the lower support plate 22 is limited through the clearance fit of the guide groove 51 and the slide block 52, so that the horizontal stress and guide functions of the support are realized.

Furthermore, wear plates are arranged in the guide grooves 51, and stainless steel plates are arranged on the side surfaces and the bottom surface of the slide block 52 to form friction pairs so that the lower support plate 22 and the bottom plate 21 can slide relatively.

In this embodiment, the sliding friction coefficient a between the bottom plate 21 and the lower seat plate 22 is smaller than the sliding friction coefficient b between the spherical cap lining plate 3 and the upper seat plate assembly 1, and the sliding friction coefficient a between the bottom plate 21 and the lower seat plate 22 is smaller than the sliding friction coefficient c between the spherical cap lining plate 3 and the lower seat plate assembly 2. The phenomenon that the spherical crown lining plate 3 and the upper seat plate component 1, and the spherical crown lining plate 3 and the lower seat plate component 2 generate displacement when the temperature of the bottom plate 21 and the lower seat plate 22 is displaced is avoided, so that the support can slide on the plane to adapt to the temperature displacement, and the smoothness of the upper structure of the bridge deck is ensured.

The friction pendulum support of the utility model can convert the friction coefficient at the temperature and the earthquake displacement, so that the support adopts a small friction coefficient at the temperature displacement to release the strain of the beam body; and a large friction coefficient is adopted during seismic displacement so as to increase damping and achieve excellent seismic isolation and reduction effects. The support can exert the beam strain and seismic isolation and reduction effects of the support at the temperature and during seismic displacement.

In this embodiment, a sliding surface friction pair 6 is disposed between the upper plane of the spherical crown lining plate 3 and the upper seat plate assembly 1, a rotating surface friction pair 7 is disposed between the lower spherical surface of the spherical crown lining plate 3 and the concave spherical surface of the lower seat plate 22, and a plane friction pair 8 is disposed between the lower plane of the lower seat plate 22 and the bottom plate 21. Under normal conditions, the upper part of the lower support plate 22 slides through the plane friction pair 8 with low friction coefficient, and the function of a common spherical support can be realized. After an earthquake occurs, when the plane of the lower support plate 22 slides and slides to exceed the normal temperature displacement and the piston type speed locker 231 locks the plane to slide, the upper seat plate assembly 1 slides through the rotating surface friction pair 7 with high friction coefficient, and the function of friction pendulum is started, so that the purposes of shock insulation and energy consumption are achieved.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A friction pendulum support comprises an upper seat plate component, a lower seat plate component and a spherical crown lining plate which is arranged between the upper seat plate component and the lower seat plate component in a sliding manner, and is characterized in that an anti-falling beam limiting component which limits the sliding displacement of the upper seat plate component and the spherical crown lining plate is arranged between the upper seat plate component and the spherical crown lining plate; the lower seat plate component comprises a bottom plate, a lower seat plate which adapts to temperature displacement under normal working conditions, and a locking component which locks the sliding position of the bottom plate and the lower seat plate when the earthquake displacement is larger than the temperature displacement, the lower seat plate is arranged between the bottom plate and the spherical crown lining plate in a sliding manner, the locking component is arranged between the lower seat plate and the bottom plate,

the anti-falling beam limiting assembly comprises a vertical limiting part and a limiting protrusion, the vertical limiting part is arranged at the bottom end of the outer edge of the upper seat plate assembly, the limiting protrusion is arranged on the periphery of the spherical crown lining plate, and the limiting protrusion abuts against the vertical limiting part when the support slides to the limiting position.

2. The friction pendulum support of claim 1, wherein the anti-drop beam limiting assembly further comprises a horizontal limiting member, and the horizontal limiting member is disposed inside the bottom end of the vertical limiting member to form a limiting groove in plug-in fit with the limiting protrusion.

3. The friction pendulum support according to claim 1 or 2, wherein the locking members are two sets, and the two sets of locking members are disposed on both sides of the lower support plate and perpendicular to a sliding direction of the lower support plate.

4. The frication pendulum support of claim 3, wherein the locking member comprises a piston type speed locker, two locker mounting blocks mounted on a base plate, and two limit stops mounted on a lower support plate, wherein the piston type speed locker is arranged along a sliding direction of the lower support plate, and both ends of the piston type speed locker are mounted on the base plate through one of the locker mounting blocks; the two limit blocking parts are arranged at two ends of a cylinder body of the piston type speed locker, and a through groove for a piston rod of the piston type speed locker to pass through is formed in the limit blocking parts.

5. The frication pendulum support of claim 4, wherein the limit stop comprises an upper limit block, a lower limit block and a fastening bolt, the upper limit block and the lower limit block are arranged opposite to each other to form the through slot, and the upper limit block and the lower limit block are detachably mounted on the lower support plate through the fastening bolt.

6. The support of claim 1 or 2, wherein the lower support plate is slidably disposed on the bottom plate via a sliding assembly, the sliding assembly includes a guide slot disposed in the middle of the bottom plate, and a sliding block disposed in the middle of the lower support plate, and the sliding block is slidably engaged with the guide slot.

7. The friction pendulum support of claim 6 wherein wear plates are disposed in the guide channels and stainless steel plates are disposed on the sides and bottom of the slide.

8. The friction pendulum support of claim 1 or 2, wherein the coefficient of sliding friction a between the base plate and the lower support plate is less than the coefficient of sliding friction b between the spherical cap liner plate and the upper support plate assembly and less than the coefficient of sliding friction c between the spherical cap liner plate and the lower support plate assembly.

9. The friction pendulum support of claim 8 wherein a sliding surface friction pair is disposed between the upper plane of the spherical cap lining plate and the upper seat plate assembly, a rotating surface friction pair is disposed between the lower spherical surface of the spherical cap lining plate and the concave spherical surface of the lower seat plate, and a plane friction pair is disposed between the lower plane of the lower seat plate and the bottom plate.