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CN-224213117-U - Damping and isolation support with additional friction damping

CN224213117UCN 224213117 UCN224213117 UCN 224213117UCN-224213117-U

Abstract

The utility model provides a shock absorbing and insulating support with additional friction damping, which comprises a damper and a lower seat plate, a middle seat plate and an upper seat plate which are sequentially arranged from bottom to top, wherein 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, the shock absorbing and insulating support has good functions of high energy consumption, vertical pulling resistance and beam falling prevention at a limit displacement position, the shock absorbing and insulating support can meet the actual working condition requirements of a high-intensity earthquake region, and for a bridge or building structure of the high-intensity earthquake region, a tensile structure, an energy consumption structure and a beam falling prevention structure are not required to be additionally arranged, the structural complexity of an earthquake resistant structure system is reduced, construction and installation and daily maintenance are convenient, and the foundation construction cost is also reduced to a certain extent.

Inventors

  • JIA LIZHI
  • HAN JIASHAN
  • HE PINGGEN
  • GU HAILONG
  • LU CHANG
  • ZHENG PENGFEI
  • GAO JIAN
  • YANG KANG
  • CUI CHONG

Assignees

  • 中船双瑞(洛阳)特种装备股份有限公司

Dates

Publication Date
20260508
Application Date
20231213

Claims (9)

  1. 1. The damping and isolating support with the additional friction damping is characterized by comprising a damper (2) and a lower seat plate (10), a middle seat plate (7) and an upper seat plate (1) which are sequentially arranged from bottom to top, wherein 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 the upper seat plate (1) through the piston rod (21), the other end of the damper (2) is connected with the lower seat plate (10) through the piston rod (21), and the other end of the damper (2) is connected with the upper seat plate (1); Both ends of cylinder body (23) all set up the screw thread mouth with inner chamber (233) intercommunication, will be with the screw thread mouth that upper end cover (22) is connected and mark as first screw thread mouth (231), will be with the screw thread mouth that lower end cover (24) is connected and mark as second screw thread mouth (232), the outer wall of upper end cover (22) sets up the external screw thread to be connected with first screw thread mouth (231) with threaded connection's mode, lower end cover (24) include screw thread post (241), screw thread post (241) are connected with second screw thread mouth (232) with threaded connection's mode.
  2. 2. A friction damped vibration damping mount according to claim 1, wherein the piston rod (21) comprises a first connecting rod (211), the first connecting rod (211) being connected to the friction piston (212), the first connecting rod (211) extending towards the upper end cap (22) and penetrating the upper end cap (22) to the outside of the cylinder (23), the end of the first connecting rod (211) remote from the friction piston (212) being connected to the upper seat plate (1) or the lower seat plate (10).
  3. 3. A friction damped vibration reducing and insulating mount according to claim 2, wherein said inner cavity (233) comprises a conical cavity (2332), said friction piston (212) being disposed within the conical cavity (2332), the conical side wall of said conical cavity (2332) being capable of interference fit with the friction piston (212), the direction from the first connecting rod (211) to the lower end cap (24) being denoted K, the cross-sectional diameter of said conical cavity (2332) increasing gradually along the direction K, the cross-sectional minimum diameter of said conical cavity (2332) being < the maximum outer diameter of the friction piston (212) being < the maximum cross-sectional diameter of the conical cavity (2332).
  4. 4. A friction damped vibration damping mount according to claim 3, wherein said friction piston (212) comprises a conical section (2121), a cylindrical section (2122) connected in sequence in the direction K, and said conical section (2121) has a gradually increasing cross-sectional diameter.
  5. 5. A friction damping added shock absorber support according to claim 3, 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 in the direction along K, the inner cavity (233) comprises a cylindrical cavity (2331) and a conical cavity (2332) which are communicated in sequence, and the outer diameter of the first connecting rod (211) is smaller than the inner diameter of the cylindrical cavity (2331).
  6. 6. A friction damping added shock absorbing and isolating mount according to claim 2, wherein the damper (2) comprises a guide belt (25), the upper end cap (22) is provided with a mounting hole, the first connecting rod (211) is arranged in and penetrates through the mounting hole, an annular groove is arranged on the inner wall of the mounting hole, and the guide belt (25) is arranged in the annular groove and plays a role in positioning and guiding the first connecting rod (211).
  7. 7. A friction damped vibration reducing and isolating mount according to claim 1, wherein one end of the damper (2) is hinged to the upper seat plate (1) via a piston rod (21) and the other end is hinged to the lower seat plate (10), or one end of the damper (2) is hinged to the lower seat plate (10) via a piston rod (21) and the other end is hinged to the upper seat plate (1).
  8. 8. The vibration reduction and isolation support with additional friction damping according to claim 2, 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 (10) 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 of being capable of rotating relative to the concave ball grooves.
  9. 9. The vibration-reducing and isolating support with additional friction damping according to claim 8, wherein the vibration-reducing and isolating support comprises a tension plate, the tension plate is arranged outside a groove body opening of the concave ball groove and is connected with the upper seat plate (1) or the lower seat plate (10), a hinge cavity is formed between the tension plate and the concave ball groove, the tension plate is provided with an assembling opening, the first connecting rod (211) or the second connecting rod (242) penetrates through the assembling opening of the tension plate, and the first ball head (2111) or the second ball head (2421) is arranged in the hinge cavity in a manner of being capable of rotating relative to the concave ball groove, and the maximum opening size of the assembling opening is smaller than the diameter of the first ball head (2111) or the diameter of the second ball head (2421).

Description

Damping and isolation support with additional friction damping Technical Field The utility model relates to the technical field of bridges and building structures, in particular to a seismic isolation bearing with additional friction damping. Background The vibration reduction and insulation supports commonly used at present mainly comprise hyperboloid vibration reduction and insulation supports, lead rubber supports, high damping rubber supports, metal damping vibration reduction and insulation supports, viscous damping vibration reduction and insulation supports and the like. The seismic isolation bearing has good adaptability to conventional bridge building structures and conventional seismic intensity areas, but has a slightly single function for high-intensity seismic areas. The high-intensity earthquake areas, especially the earthquake areas with nine degrees and more, the bridge and building earthquake reduction and isolation device not only needs to have the conventional earthquake reduction and isolation functions, but also considers the vertical earthquake effect, the long-period earthquake effect and the like, but the existing earthquake reduction and isolation support is single in most functions, often does not have the good vertical tensile function, the high energy consumption function, the beam falling prevention function at the limit displacement and the like, so that the existing earthquake reduction and isolation support is difficult to meet the actual working condition requirements of the high-intensity earthquake areas. Under the actual working condition of a high-intensity earthquake region, besides the vibration reduction and isolation support, a tensile structure, an energy consumption structure, a beam falling prevention structure and the like are required to be additionally arranged in a bridge or a building structure so as to meet the actual working condition requirement of the high-intensity earthquake region, but the vibration reduction structure system is too complex, so that 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 additional product structures. Disclosure of utility model In view of the above, the present utility model aims to provide a seismic isolation bearing with additional friction damping, so as to solve the problem that the seismic isolation bearing in the prior art does not have good vertical tensile function, high energy consumption function and beam falling prevention function at the limit displacement, and is difficult to meet the actual working condition requirement of the high intensity seismic region. In order to achieve the above purpose, the technical scheme of the utility model is realized as follows: The damping and isolating support with the additional friction damping comprises a damper and a lower seat plate, a middle seat plate and an upper seat plate which are sequentially arranged from bottom to top, wherein 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 the upper seat plate through the piston rod, the other end of the damper is connected with the 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 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, the conical side wall of the conical cavity can be in interference fit with the friction piston, the direction from the first connecting rod to the lower end cover is denoted as K, 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 smaller than the maximum outer diameter of the friction piston and smaller 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, an