CN117513139A - Spherical support with additional friction damping - Google Patents
Spherical support with additional friction damping Download PDFInfo
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- CN117513139A CN117513139A CN202311705927.0A CN202311705927A CN117513139A CN 117513139 A CN117513139 A CN 117513139A CN 202311705927 A CN202311705927 A CN 202311705927A CN 117513139 A CN117513139 A CN 117513139A
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- seat plate
- friction
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- connecting rod
- ball
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- 238000013016 damping Methods 0.000 title claims abstract description 25
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 12
- 239000010935 stainless steel Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 229910052755 nonmetal Inorganic materials 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/36—Bearings or like supports allowing movement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention provides a spherical support with additional friction damping, which comprises a damper, an upper seat plate, a middle seat plate and a lower seat plate, wherein the upper seat plate, the middle seat plate and the lower seat plate are sequentially arranged from top to bottom; the damper comprises a piston rod, a cylinder body, an upper end cover and a lower end cover, wherein one end of the cylinder body is connected with the upper end cover, the other end of the cylinder body is connected with the lower end cover, the cylinder body is provided with an inner cavity, the piston rod comprises a friction piston, the friction piston is arranged in the inner cavity, and at least part of the wall of the inner cavity of the cylinder body can be in interference fit with the friction piston; the invention has the functions of high energy consumption, vertical drawing resistance and beam falling prevention at the limit displacement, and can meet the actual working condition requirement of a high-intensity earthquake region. For the bridge or the building structure in the high-intensity earthquake area, a tensile structure, an energy consumption structure and an anti-falling beam structure are not required to be additionally arranged, so that the structural complexity of the earthquake-resistant structure system is reduced, and the construction and the installation and the daily maintenance are facilitated.
Description
Technical Field
The invention relates to the technical field of bridges and building structures, in particular to a spherical support with additional friction damping.
Background
The spherical support is commonly used in bridge engineering, can bear the vertical load of the bridge, is suitable for the temperature displacement, the corner change of the beam end and the like of the bridge, and is a key component in bridge engineering construction. However, the conventional spherical support does not have the function of shock absorption and isolation, and can only resist the earthquake force under the action of the earthquake, and if the earthquake force exceeds the fortification earthquake, damages such as bridge pier damage and beam body overturning can occur.
Therefore, the bridge in the earthquake area generally adopts shock absorption and isolation supports, and often does not adopt spherical supports. In the prior art, if the spherical support is applied to a high-intensity earthquake area, a tensile structure, an energy consumption structure, an anti-falling beam structure and the like are required to be additionally arranged in a bridge or building structure, so that an earthquake-resistant structure system is too complex, various inconveniences are brought to construction and design, and the problems of poor bridge construction economy, difficult maintenance and the like are also caused by excessive product structures.
Disclosure of Invention
In view of the above, the invention aims to provide a ball-type support with additional friction damping, so as to solve the problems that the ball-type support in the prior art is difficult to be applied to a bridge in a high-intensity earthquake region, and cannot provide a good vertical tensile function, a high energy consumption function, a beam falling prevention function at a limit displacement position and the like.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the spherical support with the additional friction damping comprises a damper, and an upper seat plate, a middle seat plate and a lower seat plate which are sequentially arranged from top to bottom, wherein a plane friction pair is arranged between the upper seat plate and the middle seat plate, and a spherical friction pair is arranged between the middle seat plate and the lower seat plate; the damper comprises a piston rod, a cylinder body, an upper end cover and a lower end cover, one end of the cylinder body is connected with the upper end cover, the other end of the cylinder body is connected with the lower end cover, the cylinder body is provided with an inner cavity, the piston rod comprises a friction piston, the friction piston is arranged in the inner cavity, at least part of the inner cavity wall of the cylinder body can be in interference fit with the friction piston, one end of the damper is connected with an upper seat plate through the piston rod, the other end of the damper is connected with a lower seat plate, or one end of the damper is connected with the lower seat plate through the piston rod, and the other end of the damper is connected with the upper seat plate.
Further, the side of upper saddle towards lower bedplate sets up the limiting plate, the limiting plate is located the outside of lower bedplate, set up the direction friction pair between the lateral wall of limiting plate one side towards lower bedplate and lower bedplate.
Further, the piston rod comprises a first connecting rod, the first connecting rod is connected with the friction piston, the first connecting rod extends towards the upper end cover and penetrates through the upper end cover to the outside of the cylinder body, and one end, away from the friction piston, of the first connecting rod is connected with the upper seat plate or the lower seat plate.
Further, the inner cavity comprises a conical cavity, the friction piston is arranged in the conical cavity, and the conical side wall of the conical cavity can be in interference fit with the friction piston.
Further, the direction from the first connecting rod to the lower end cover is denoted as K, and the cross section diameter of the conical cavity gradually increases along the K direction, and the minimum cross section diameter of the conical cavity is less than the maximum outer diameter of the friction piston is less than the maximum cross section diameter of the conical cavity.
Further, in the direction along K, the friction piston comprises a conical section and a cylindrical section which are connected in sequence, and the diameter of the cross section of the conical section is gradually increased.
Further, the outer diameter of the first connecting rod is smaller than or equal to the minimum outer diameter of the friction piston, and in the K direction, the inner cavity comprises a cylindrical cavity and a conical cavity which are sequentially communicated, and the outer diameter of the first connecting rod is smaller than the inner diameter of the cylindrical cavity.
Further, the damper comprises a guide belt, the upper end cover is provided with an assembly hole, the first connecting rod is arranged in the assembly hole and penetrates through the assembly hole, an annular groove is formed in the inner wall of the assembly hole, and the guide belt is arranged in the annular groove and plays a role in positioning and guiding the first connecting rod.
Further, the one end that friction piston was kept away from to the head rod sets up first bulb, the lower extreme cover includes the screw thread post and the second connecting rod of being connected with the screw thread post, one side that the piston rod was kept away from to the screw thread post sets up the second connecting rod, the one end that the piston rod was kept away from to the second connecting rod sets up the second bulb, upper bedplate, lower bedplate all set up concave ball groove, first bulb, second bulb are all set up in corresponding concave ball inslot with can be for concave ball groove pivoted mode.
Further, the ball-type support comprises a tension plate, the tension plate is arranged outside a groove body opening of the concave ball groove, the tension plate is connected with the upper seat plate or the lower seat plate, a hinge cavity is formed between the tension plate and the concave ball groove, the tension plate is provided with an assembly opening, the first connecting rod or the second connecting rod penetrates through the assembly opening of the tension plate, the first ball head or the second ball head is arranged in the hinge cavity in a manner capable of rotating relative to the concave ball groove, and the maximum opening size of the assembly opening is smaller than the diameter of the first ball head or the diameter of the second ball head.
Compared with the prior art, the spherical support with additional friction damping has the following advantages:
according to the spherical support with additional friction damping, on one hand, larger positive pressure can be generated on the contact surface through interference fit between the friction piston and the inner cavity wall of the cylinder body, larger friction resistance can be generated between the friction piston and the inner cavity wall of the cylinder body along with larger displacement (such as earthquake) between the upper seat plate and the lower seat plate, good energy consumption effect is provided along with the friction resistance output by the damper, and counter force in the vertical direction can be generated to play a role in vertical tensile pulling; on the other hand, under extreme application scenes such as severe earthquakes, even if the friction piston breaks through interference fit of the inner cavity wall, when the spherical support and the damper move to the limit positions, the friction piston can be abutted with the end cover structure, further displacement is prevented from being generated, and the effect of effectively limiting and preventing the beam from falling can be achieved.
Therefore, the spherical support has the functions of high energy consumption, vertical drawing resistance and beam falling prevention at the limit displacement, and can meet the actual working condition requirements of a high-intensity earthquake region. Meanwhile, for bridges or building structures in high-intensity earthquake areas, a tensile structure, an energy consumption structure and an anti-falling beam structure are not required to be additionally arranged, so that the structural complexity of an earthquake-resistant structure system is reduced, the construction and the installation as well as the daily maintenance are facilitated, and the foundation cost is reduced to a certain extent.
In addition, through the interference fit between friction piston and the inner chamber wall of cylinder body, can produce great positive pressure on the contact surface for when carrying out relative motion between piston rod and the cylinder body (especially refer to the piston rod and move towards the direction of keeping away from the lower extreme cover), can export great friction between friction piston and the inner chamber wall of cylinder body, not only improve the inside and outside double sleeve structure of traditional barrel friction damper into single barrel (i.e. cylinder body), need not additionally to set up preloading device moreover, further reduced part quantity, be favorable to reducing the structural complexity of attenuator, also saved the space that relevant part took, reduced the whole overall dimension of attenuator structure and whole ball-type support. Meanwhile, the cylinder type friction damper is simple to assemble, convenient to process, manufacture, assemble and disassemble, and convenient to overhaul and replace parts. The damper can be installed upside down without considering the installation direction, so that the construction assembly operation of the spherical support is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a ball mount with additional friction damping according to an embodiment of the present invention;
FIG. 2 is a semi-sectional view of a ball mount with additional friction damping according to an embodiment of the present invention from a top view;
FIG. 3 is a semi-sectional view of another ball mount with additional friction damping according to an embodiment of the present invention from a top view;
FIG. 4 is a cross-sectional view of a damper according to an embodiment of the present invention;
FIG. 5 is a schematic view of a piston rod according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a cylinder according to an embodiment of the present invention.
Reference numerals illustrate:
1. an upper seat plate; 11. a planar stainless steel slide plate; 2. a damper; 21. a piston rod; 211. a first connecting rod; 2111. a first ball head; 212. a friction piston; 2121. a conical section; 2122. a cylindrical section; 22. an upper end cap; 23. a cylinder; 231. a first threaded port; 232. a second threaded port; 233. an inner cavity; 2331. a cylindrical cavity; 2332. a conical cavity; 24. a lower end cap; 241. a threaded column; 242. a second connecting rod; 2421. a second ball head; 25. a guide belt; 31. a first tensile plate; 32. a second tensile plate; 4. a tension screw; 5. a middle seat board; 51. a planar nonmetallic skateboard; 52. spherical stainless steel slide plate; 6. a lower seat plate; 61. spherical nonmetallic skateboard; 7. guiding the nonmetallic skateboard; 8. guiding the stainless steel sliding plate; 9. and a limiting plate.
Detailed Description
The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The term "cone" as used herein refers to a "flat top cone". In this application, terms such as "upper" and "lower" are used with reference to the coordinates of fig. 1.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
In the prior art, because the conventional spherical support does not have the function of shock absorption and isolation, the spherical support is not adopted in the bridge in the earthquake area at present. If the spherical support is applied to a high-intensity earthquake area, a tensile structure, an energy consumption structure, an anti-falling beam structure and the like are required to be additionally arranged in a bridge or building structure, so that an earthquake-resistant structure system is too complex, a plurality of inconveniences are brought to construction and design, and the problems of poor bridge construction economy, difficult maintenance and the like are also caused by excessive product structures.
In order to solve the problems that in the prior art, a spherical support is difficult to be applied to a bridge in a high-intensity earthquake area, a good vertical tensile function, a high energy consumption function, a beam falling prevention function at a limit displacement position and the like cannot be provided, the embodiment provides a spherical support with additional friction damping, and as shown in figures 1-6, the spherical support comprises a damper 2, an upper seat plate 1, a middle seat plate 5 and a lower seat plate 6 which are sequentially arranged from top to bottom, a plane friction pair is arranged between the upper seat plate 1 and the middle seat plate 5, and a spherical friction pair is arranged between the middle seat plate 5 and the lower seat plate 6; the damper 2 is a barrel type friction damper, the damper 2 comprises a piston rod 21, a cylinder body 23, an upper end cover 22 and a lower end cover 24, one end of the cylinder body 23 is connected with the upper end cover 22, the other end of the cylinder body is connected with the lower end cover 24, the cylinder body 23 is provided with an inner cavity 233, the piston rod 21 comprises a friction piston 212, the friction piston 212 is arranged in the inner cavity 233, at least part of the inner cavity wall of the cylinder body 23 in the direction far away from the lower end cover 24 can be in interference fit with the friction piston 212, one end of the damper 2 is connected with the upper seat plate 1 through the piston rod 21, the other end of the damper 2 is connected with the lower seat plate 6, or one end of the damper 2 is connected with the lower seat plate 6 through the piston rod 21, and the other end of the damper 2 is connected with the upper seat plate 1.
According to the spherical support, the structure of the spherical support is improved, the cylindrical friction damper is arranged, on one hand, larger positive pressure can be generated on the contact surface through interference fit between the friction piston 212 and the inner cavity wall of the cylinder body 23, larger friction resistance can be generated between the friction piston 212 and the inner cavity wall of the cylinder body 23 along with larger displacement (such as earthquake) between the upper seat plate 1 and the lower seat plate 6, good energy consumption effect is provided along with the friction resistance output by the damper 2, and counter force in the vertical direction can be generated to play a role in vertical tensile pulling; on the other hand, under extreme application scenes such as severe earthquakes, even if the friction piston 212 breaks through interference fit of the inner cavity wall, when the spherical support and the damper 2 move to the limit position, the friction piston 212 can be abutted with the end cover structure, further displacement is prevented, and the effect of effectively limiting and preventing the beam from falling can be achieved.
Therefore, the spherical support has the functions of high energy consumption, vertical drawing resistance and beam falling prevention at the limit displacement, and can meet the actual working condition requirements of a high-intensity earthquake region. Meanwhile, for bridges or building structures in high-intensity earthquake areas, a tensile structure, an energy consumption structure and an anti-falling beam structure are not required to be additionally arranged, so that the structural complexity of an earthquake-resistant structure system is reduced, the construction and the installation as well as the daily maintenance are facilitated, and the foundation cost is reduced to a certain extent.
In addition, through the interference fit between friction piston 212 and the inner chamber wall of cylinder body 23, can produce great positive pressure on the contact surface for when carrying out relative motion between piston rod 21 and the cylinder body 23 (especially, the piston rod 21 is moved towards the direction of keeping away from lower end cover 24), can export great friction between friction piston 212 and the inner chamber wall of cylinder body 23, not only improve the inside and outside double sleeve structure of traditional barrel friction damper into single barrel (i.e. cylinder body 23), need not additionally to set up preloading device moreover, further reduced part quantity, be favorable to reducing the structural complexity of attenuator, also saved the space that relevant part took, reduced the whole overall dimension of attenuator structure and whole ball-type support. Meanwhile, the cylinder type friction damper is simple to assemble, convenient to process, manufacture, assemble and disassemble, and convenient to overhaul and replace parts. With the figure 1 as an illustration, the damper 2 can be installed upside down without considering the installation direction, so that the construction assembly operation of the spherical support is facilitated.
The piston rod 21 includes a first connecting rod 211, the first connecting rod 211 is connected with the friction piston 212, the first connecting rod 211 extends towards the upper end cover 22 and penetrates the upper end cover 22 to the outside of the cylinder 23, and one end of the first connecting rod 211 away from the friction piston 212 is connected with the upper seat plate 1 or the lower seat plate 6. Thereby realizing that one end of the piston rod 21 is connected to the upper seat plate 1 or the lower seat plate 6 and the other end provides frictional resistance with the inner chamber wall through the friction piston 212.
The inner cavity 233 includes a conical cavity 2332, the friction piston 212 is disposed within the conical cavity 2332, and a tapered sidewall of the conical cavity 2332 is capable of an interference fit with the friction piston 212; specifically, the direction from the first connecting rod 211 to the lower end cap 24 is denoted as K, and the cross-sectional diameter of the conical chamber 2332 gradually increases along the direction K, and the smallest cross-sectional diameter of the conical chamber 2332 < the largest outer diameter of the friction piston 212 < the largest cross-sectional diameter of the conical chamber 2332. Therefore, on one hand, the friction piston 212 has a certain movable space in the conical cavity 2332, and along with the installation of the damper 2, a certain movement displacement distance between the upper seat board 1 and the lower seat board 6 in the vertical direction can be allowed to be generated so as to adapt to the normal vertical displacement of a bridge or a building structure in daily life, on the other hand, when the piston rod 21 moves towards the direction away from the lower end cover 24, the friction piston 212 can gradually approach to the conical side wall of the conical cavity 2332 until an interference fit state with certain friction force is generated, so that the damper 2 can stably output a gradually increased damping force.
In the direction K, the friction piston 212 includes a conical section 2121 and a cylindrical section 2122 connected in sequence, and the cross-sectional diameter of the conical section 2121 gradually increases; the maximum outer diameter of the conical section 2121 is equal to the outer diameter of the cylindrical section 2122 and can be regarded as the maximum outer diameter of the friction piston 212. Therefore, when the friction piston 212 is in interference fit with the conical side wall of the conical cavity 2332, at least part of the conical surface of the conical section 2121 can be in contact with the conical side wall of the conical cavity 2332 and in interference fit, so that the contact area of the friction piston 212 and the conical side wall of the conical cavity 2332 is increased, the output friction resistance is correspondingly increased to a certain extent, and the excessively concentrated stress point is avoided when the friction piston 212 and the conical side wall of the conical cavity 2332 are in contact. Preferably, the conical section 2121 and the cylindrical section 2122 are in smooth transition.
The outer diameter of the first connecting rod 211 is smaller than or equal to the minimum outer diameter of the friction piston 212, in the direction along K, the inner cavity 233 comprises a cylindrical cavity 2331 and a conical cavity 2332 which are sequentially communicated, the outer diameter of the first connecting rod 211 is smaller than the inner diameter of the cylindrical cavity 2331, so that one end of the first connecting rod 211 is connected with the friction piston 212, the other end of the first connecting rod can extend along the cylindrical cavity 2331 until penetrating the outside of the cylinder 23, meanwhile, unnecessary contact between the first connecting rod 211 and the side wall of the cylindrical cavity 2331 is avoided, and stable output of damping force between the conical section 2121 and the conical cavity 2332 is ensured. Furthermore, the inner diameter of the cylindrical chamber 2331 is equal to the smallest cross-sectional diameter of the conical chamber 2332, and likewise, a rounded transition is preferred between the cylindrical chamber 2331 and the conical chamber 2332.
The surface of the piston rod 21 and the inner cavity wall of the cylinder body 23 are subjected to surface treatment, such as coating, surface heat treatment and the like, so that the hardness and the wear resistance of the parts are increased, and the damping force is stabilized, and meanwhile, the product has better low-cycle fatigue performance.
The damper 2 includes a guide belt 25, the upper end cap 22 has an assembly hole, the first connecting rod 211 is disposed in the assembly hole and penetrates the assembly hole, an annular groove is disposed on an inner wall of the assembly hole, and the guide belt 25 is disposed in the annular groove and plays a role in positioning and guiding the first connecting rod 211, so that the piston rod 21 can only move along or against the K direction relative to the cylinder 23.
For the installation of the upper end cover 22 and the lower end cover 24, the two ends of the cylinder 23 are respectively provided with a threaded port communicated with the inner cavity 233, the threaded port connected with the upper end cover 22 is marked as a first threaded port 231, the threaded port connected with the lower end cover 24 is marked as a second threaded port 232, the outer wall of the upper end cover 22 is provided with external threads and is connected with the first threaded port 231 in a threaded connection mode, the lower end cover 24 comprises a threaded column 241, and the threaded column 241 is connected with the second threaded port 232 in a threaded connection mode. Therefore, on the basis of ensuring the assembly firmness, the convenient degree of the disassembly and assembly of the damper 2 is also improved, and the production assembly, the disassembly and the assembly maintenance of the damper 2 are facilitated.
One end of the damper 2 is hinged with the upper seat board 1 through a piston rod 21, the other end of the damper 2 is hinged with the lower seat board 6, or one end of the damper 2 is hinged with the lower seat board 6 through the piston rod 21, and the other end of the damper 2 is hinged with the upper seat board 1; through the articulated form, when the damper 2 is connected with the upper seat board 1 and the lower seat board 6, certain movement between the upper seat board 1 and the lower seat board 6 in the horizontal direction can be allowed, and a certain inclination angle can be generated by the damper 2 so as to adapt to the normal horizontal displacement of a bridge or a building structure in daily life. It should be noted that, in the normal state of the spherical bearing, since the friction piston 212 and the conical chamber 2332 have an initial gap, they are not in contact, and at this time, the bridge or the building structure is allowed to generate a certain horizontal displacement or a vertical displacement, and the damper 2 is in a state of no operation, without providing frictional resistance.
The first ball joint 2111 is arranged at one end of the first connecting rod 211 far away from the friction piston 212, the lower end cover 24 comprises a threaded column 241 and a second connecting rod 242 connected with the threaded column 241, the second connecting rod 242 is arranged at one side of the threaded column 241 far away from the piston rod 21, the second ball joint 2421 is arranged at one end of the second connecting rod 242 far away from the piston rod 21, concave ball grooves are formed in the upper seat plate 1 and the lower seat plate 6, and the first ball joint 2111 and the second ball joint 2421 are arranged in the corresponding concave ball grooves in a manner capable of rotating relative to the concave ball grooves. Wherein, since the damper 2 can be installed upside down without considering the installation direction, the first ball head 2111 can be disposed in one concave ball groove and the second ball head 2421 can be correspondingly disposed in the other concave ball groove for the two concave ball grooves, namely, the concave ball groove of the upper seat board 1 and the concave ball groove of the lower seat board 6.
In order to improve the assembly firmness of the damper 2 hinged with the upper seat plate 1 and the lower seat plate 6, for any ball structure and a corresponding concave ball groove, the ball-shaped support comprises a tension plate, the tension plate is arranged outside a groove body opening of the concave ball groove, the tension plate is connected with the upper seat plate 1 or the lower seat plate 6, a hinge cavity is formed between the tension plate and the concave ball groove, an assembly opening is arranged on the tension plate, the first connecting rod 211 or the second connecting rod 242 penetrates through the assembly opening of the tension plate, the first ball head 2111 or the second ball head 2421 can be arranged in the hinge cavity in a manner of rotating relative to the concave ball groove, and the maximum opening size of the assembly opening is smaller than the diameter of the first ball head 2111 or the diameter of the second ball head 2421. So that the first connecting rod 211 or the second connecting rod 242 penetrates through the assembly opening of the anti-pulling plate, the ball head structure is installed in the corresponding concave ball groove, the ball head structure is prevented from falling out of the concave ball groove through the stop limit of the anti-pulling plate, the assembly firmness of the damper 2 hinged with the upper seat plate 1 and the lower seat plate 6 is improved, and the long-term effective damping effect of the damper 2 is ensured.
Dividing the tensile plate into a first tensile plate 31 and a second tensile plate 32 by taking the upper seat plate 1 and the lower seat plate 6 as vertical reference standards; a first anti-pulling plate 31 is arranged on one side of the upper seat plate 1 facing the lower seat plate 6, the first anti-pulling plate 31 is positioned below the concave spherical groove of the upper seat plate 1, the first anti-pulling plate 31 is connected with the upper seat plate 1 through a fastener, a second anti-pulling plate 32 is arranged on one side of the lower seat plate 6 facing the upper seat plate 1, the second anti-pulling plate 32 is positioned above the concave spherical groove of the lower seat plate 6, and the second anti-pulling plate 32 is connected with the lower seat plate 6 through a fastener; preferably, the fastener may be a tension screw 4, or other fastener.
For the plane friction pair, the plane friction pair comprises a plane stainless steel slide plate 11 and a plane non-metal slide plate 51, specifically, the lower surface of the upper seat plate 1 is pasted with the plane stainless steel slide plate 11, the upper surface of the middle seat plate 5 is provided with a pit, the plane non-metal slide plate 51 is embedded in the pit, and the plane stainless steel slide plate 11 and the plane non-metal slide plate 51 form the plane friction pair so as to adapt to the horizontal sliding requirement of an upper beam body structure.
For the spherical friction pair, the spherical friction pair comprises a spherical stainless steel slide plate 52 and a spherical non-metal slide plate 61, specifically, the bottom of the middle seat plate 5 is a convex spherical surface coating the spherical stainless steel slide plate 52, the upper part of the lower seat plate 6 is a concave spherical surface with a plurality of pits, and the spherical non-metal slide plate 61 is embedded in the pits, so that the spherical stainless steel slide plate 52 and the spherical non-metal slide plate 61 form a spherical friction pair (or referred to as a rotation friction pair) so as to adapt to the rotation requirement of an upper beam body or a building structure.
The side of upper saddle 1 towards lower saddle 6 sets up limiting plate 9, limiting plate 9 is located the outside of lower saddle 6, limiting plate 9 sets up the direction friction pair towards between the lateral wall of lower saddle 6 and the side of lower saddle 6, limiting plate 9 is the structure of can cutting. Therefore, through the setting of limiting plate 9, direction friction pair, on the one hand, under the normal service condition of ball-type support, horizontal slip between upper bedplate 1 and the lower bedplate 6 is spacing, avoid taking place excessive slip and cause the part dislocation, also can provide the direction to sliding between upper bedplate 1 and the lower bedplate 6 in vertical direction, on the other hand under the extremely strong external force effect such as earthquake, along with producing displacement by a wide margin between upper bedplate 1 and the lower bedplate 6, limiting plate 9 is sheared under the exogenic action, release the spacing constraint to between upper bedplate 1 and the lower bedplate 6, at this moment, damper 2 just gets into operating condition, produce great frictional resistance, provide the power consumption effect, simultaneously damper 2 still can produce vertical counter force, play vertical tensile pull effect.
Specifically, the guiding friction pair comprises a guiding nonmetallic sliding plate 7 and a guiding stainless steel sliding plate 8, wherein the guiding stainless steel sliding plate 8 is arranged on one side of the limiting plate 9 facing the lower seat plate 6, and the guiding nonmetallic sliding plate 7 is arranged on the outer side wall of the lower seat plate 6; alternatively, the limiting plate 9 is provided with a guiding nonmetallic sliding plate 7, and the lower seat plate 6 is provided with a guiding stainless steel sliding plate 8.
On the projection of vertical direction, the projection of upper bedplate 1, the projection of lower bedplate 6 can all cover the projection of well bedplate 5 to damper 2 can be set up in the outside of well bedplate 5, does not influence assembly and relative motion between lower bedplate 6, well bedplate 5, upper bedplate 1, also makes the installation of damper 2 can not have the space interference.
The spherical support comprises a plurality of dampers 2, as shown in figures 2 and 3, wherein the dampers 2 are arranged around the outer side of the middle seat plate 5 so as to meet different mechanical property requirements of the support. At the same time, by increasing the external dimensions of the upper seat plate 1 and the lower seat plate 6, more dampers 2 can be provided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The spherical support with the additional friction damping is characterized by comprising a damper (2), an upper seat plate (1), a middle seat plate (5) and a lower seat plate (6) which are sequentially arranged from top to bottom, wherein a plane friction pair is arranged between the upper seat plate (1) and the middle seat plate (5), and a spherical friction pair is arranged between the middle seat plate (5) and the lower seat plate (6); the damper (2) comprises a piston rod (21), a cylinder body (23), an upper end cover (22) and a lower end cover (24), one end of the cylinder body (23) is connected with the upper end cover (22), the other end of the cylinder body is connected with the lower end cover (24), the cylinder body (23) is provided with an inner cavity (233), the piston rod (21) comprises a friction piston (212), the friction piston (212) is arranged in the inner cavity (233), at least part of the inner cavity wall of the cylinder body (23) can be in interference fit with the friction piston (212), one end of the damper (2) is connected with an upper seat plate (1) through the piston rod (21), the other end of the damper is connected with a lower seat plate (6), or one end of the damper (2) is connected with the lower seat plate (6) through the piston rod (21), and the other end of the damper is connected with the upper seat plate (1).
2. The spherical support with additional friction damping according to claim 1, wherein a limiting plate (9) is arranged on the side surface of the upper seat plate (1) facing the lower seat plate (6), the limiting plate (9) is positioned on the outer side of the lower seat plate (6), and a guiding friction pair is arranged between the side surface of the limiting plate (9) facing the lower seat plate (6) and the outer side wall of the lower seat plate (6).
3. A ball mount with additional friction damping according to claim 1, characterized in that the piston rod (21) comprises a first connecting rod (211), the first connecting rod (211) is connected with the friction piston (212), the first connecting rod (211) extends towards the upper end cover (22) and penetrates the upper end cover (22) to the outside of the cylinder body (23), and the end of the first connecting rod (211) away from the friction piston (212) is connected with the upper seat plate (1) or the lower seat plate (6).
4. A ball support with additional friction damping according to claim 3, characterized in that the inner cavity (233) comprises a conical cavity (2332), the friction piston (212) being arranged in the conical cavity (2332), the conical side wall of the conical cavity (2332) being capable of interference fit with the friction piston (212).
5. A friction damped ball socket according to claim 4, wherein the direction from the first connecting rod (211) to the lower end cap (24) is denoted as K, and the cross-sectional diameter of said conical cavity (2332) increases gradually along the direction K, the smallest cross-sectional diameter of said conical cavity (2332) being smaller than the largest outer diameter of the friction piston (212) and smaller than the largest cross-sectional diameter of the conical cavity (2332).
6. A ball support with additional friction damping according to claim 5, characterized in that in the direction K the friction piston (212) comprises a conical section (2121), a cylindrical section (2122) connected in sequence, and the cross-sectional diameter of the conical section (2121) increases gradually.
7. The ball-type support with additional friction damping according to claim 5, wherein the outer diameter of the first connecting rod (211) is smaller than or equal to the minimum outer diameter of the friction piston (212), and the inner cavity (233) comprises a cylindrical cavity (2331) and a conical cavity (2332) which are communicated in sequence along the K direction, and the outer diameter of the first connecting rod (211) is smaller than the inner diameter of the cylindrical cavity (2331).
8. A ball mount with additional friction damping according to claim 3, wherein the damper (2) comprises a guide strip (25), the upper end cap (22) has a fitting hole, the first connecting rod (211) is disposed in and penetrates the fitting hole, an annular groove is disposed on an inner wall of the fitting hole, and the guide strip (25) is disposed in the annular groove to locate and guide the first connecting rod (211).
9. A ball-type support with additional friction damping according to claim 3, wherein the end of the first connecting rod (211) far away from the friction piston (212) is provided with a first ball head (2111), the lower end cover (24) comprises a threaded column (241) and a second connecting rod (242) connected with the threaded column (241), one side of the threaded column (241) far away from the piston rod (21) is provided with a second connecting rod (242), one end of the second connecting rod (242) far away from the piston rod (21) is provided with a second ball head (2421), the upper seat plate (1) and the lower seat plate (6) are provided with concave ball grooves, and the first ball head (2111) and the second ball head (2421) are both arranged in the corresponding concave ball grooves in a manner capable of rotating relative to the concave ball grooves.
10. The ball mount with additional friction damping according to claim 9, wherein the ball mount comprises a tension plate disposed outside the opening of the groove body of the groove, the tension plate being connected to the upper seat plate (1) or the lower seat plate (6), an articulation cavity being formed between the tension plate and the groove, the tension plate being provided with an assembly opening, the first connecting rod (211) or the second connecting rod (242) penetrating the assembly opening of the tension plate, the first ball head (2111) or the second ball head (2421) being rotatably disposed in the articulation cavity with respect to the groove, the maximum opening size of the assembly opening being smaller than the diameter of the first ball head (2111) or the diameter of the second ball head (2421).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311705927.0A CN117513139A (en) | 2023-12-13 | 2023-12-13 | Spherical support with additional friction damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311705927.0A CN117513139A (en) | 2023-12-13 | 2023-12-13 | Spherical support with additional friction damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117513139A true CN117513139A (en) | 2024-02-06 |
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ID=89759126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311705927.0A Pending CN117513139A (en) | 2023-12-13 | 2023-12-13 | Spherical support with additional friction damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117513139A (en) |
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2023
- 2023-12-13 CN CN202311705927.0A patent/CN117513139A/en active Pending
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