CN111218997A - Three-dimensional spin shock insulation support - Google Patents
Three-dimensional spin shock insulation support Download PDFInfo
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- CN111218997A CN111218997A CN202010084531.9A CN202010084531A CN111218997A CN 111218997 A CN111218997 A CN 111218997A CN 202010084531 A CN202010084531 A CN 202010084531A CN 111218997 A CN111218997 A CN 111218997A
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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
- 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
- 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
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Abstract
The invention belongs to the technical field of shock insulation, and particularly relates to a three-dimensional rolling ball shock insulation support which comprises: upper bracket board, metal spin, bottom suspension bedplate, level support the shock insulation thing metal flat board to attenuator, vertical shock insulator, flute profile, and upper bracket board, bottom suspension bedplate set up relatively from top to bottom, are equipped with frequency conversion concave surface on the corresponding face of upper bracket board, bottom suspension bedplate respectively, wherein: three upper bracket board frequency conversion concave surface is seted up to the bottom of upper bracket board, and three lower bolster board assembled frequency conversion concave surface is installed on the upper portion of lower bolster board, and upper bracket board frequency conversion concave surface and lower bolster board assembled frequency conversion concave surface are two liang of correspondences along the upper and lower direction and are a set of, set up the metal spin between every frequency conversion concave surface of group, and every frequency conversion concave surface lower part of lower bolster board corresponds the vertical isolator of installation. The ball seismic isolation bearing can simultaneously isolate horizontal and vertical seismic forces, and can also solve the problems of insufficient energy consumption capability, easy overturn, high cost, poor durability and the like of the ball seismic isolation bearing.
Description
Technical Field
The invention belongs to the technical field of shock insulation, and particularly relates to a three-dimensional rolling ball shock insulation support.
Background
The shock insulation principle of the rolling ball support is that the concave curved surface is utilized to prolong the inherent period of the structure, the power amplification effect caused by the earthquake action is greatly reduced, and the earthquake energy is consumed through the friction force generated by the rolling balls and the upper and lower concave curved surfaces in the rolling process. At present, scholars at home and abroad develop various rolling ball shock insulation supports, in 1870, Touaillon invents that a rolling ball is placed in a support plate with spherical concave surfaces at the upper part and the lower part; in 1995, Kemeny et al invented a Ball-In-Cone seismic isolation bearing; in 2010, Tsai CS et al propose a rolling ball shock insulation support with damping materials; in 2012, ball disc spring shock isolation devices were proposed by Suiyinger et al; in 2014, visco-elastic damping rolling ball shock insulation supports were proposed by Suiyojie et al; in 2016, Zhaojinping et al proposed a ball-isolated bearing with a brake spring; 2019 Jochi Yu et al propose a multi-ball seismic isolation bearing. However, the ball seismic isolation support is developed only by considering isolation of horizontal seismic force and cannot isolate vertical seismic force. The actual earthquake damage shows that the influence of the vertical earthquake cannot be ignored. For example, the north ridge earthquake and the sakashen earthquake both find the case where the vertical acceleration peak approaches or even exceeds the horizontal acceleration peak. Therefore, the ball bearing for isolating the three-dimensional seismic force can supplement the blank.
Disclosure of Invention
The invention aims to provide a three-dimensional rolling ball shock insulation support, which can simultaneously isolate horizontal and vertical seismic force, and can solve the problems of insufficient energy consumption and the like (such as Touaillon), easy overturning and the like (such as Tsai CS), high cost and the like (such as 2012 years of inertia Invitrogen) or poor durability (such as 2014) of the rolling ball shock insulation support researched by the predecessor.
The technical scheme of the invention is as follows:
a three-dimensional ball-isolated mount comprising: upper bracket board, metal spin, bottom suspension bedplate, level support isolation object metal flat board to attenuator, vertical isolator, flute profile, concrete structure as follows:
upper bracket board, bottom suspension bedplate are according to relative setting from top to bottom, are equipped with the concave curved surface of frequency conversion on the corresponding face of upper bracket board, bottom suspension bedplate respectively, wherein: the bottom of the upper support plate is provided with three upper support plate variable-frequency concave curved surfaces, the upper part of the lower support plate is provided with three lower support plate assembled variable-frequency concave curved surfaces, the upper support plate variable-frequency concave curved surfaces and the lower support plate assembled variable-frequency concave curved surfaces correspond to each other in an up-down direction to form a group, and a metal rolling ball is arranged between each group of variable-frequency concave curved surfaces;
the lower support plate is of a cylindrical structure, three lower cavities which are uniformly distributed along the circumferential direction are formed in the middle of the lower support plate, and lower support plate assembly type variable frequency concave curved surfaces are installed in the three lower cavities through vertical shock absorbers respectively;
the top of the upper support plate is covered and buckled with a groove-shaped supporting shock-insulation metal flat plate, and an upper cavity is formed between the groove-shaped part of the groove-shaped supporting shock-insulation metal flat plate and the upper support plate; the top of upper bracket board installs three level additional and is evenly arranged along the circumferencial direction to the attenuator, and the central axis of three level to the attenuator intersects in the centre of a circle of circumference.
The three-dimensional spin shock insulation support is characterized in that vertical shock insulators are respectively placed below each assembled variable frequency concave curved surface, each vertical shock insulator comprises a vertical shock insulation device upper connecting plate, a vertical shock insulation device lower connecting plate and a vertical shock insulation device circular stand column connected between the vertical shock insulation device upper connecting plate and the vertical shock insulation device lower connecting plate, and the vertical shock insulation device lower connecting plate is connected with the lower support plate through a third matched fixing screw and a bolt rod.
Three-dimensional spin shock insulation support, the circular stand of vertical shock insulation device be four equipartitions, install the permanent magnet loading board and the anticollision spring of taking ball bearing on the circular stand of every vertical shock insulation device, ball bearing installs in the through-hole in permanent magnet loading board four corners, the permanent magnet loading board passes through ball bearing and the circular stand cooperation of vertical shock insulation device, anticollision spring is located between vertical shock insulation device upper junction plate, the permanent magnet loading board.
The three-dimensional rolling ball shock insulation support is characterized in that a second permanent magnet is arranged at the bottom of the permanent magnet bearing plate, a third permanent magnet is arranged at the top of a lower connecting plate of the vertical shock insulation device, and the second permanent magnet and the third permanent magnet are arranged oppositely.
The three-dimensional rolling ball shock insulation support is characterized in that the horizontal damper comprises a damper sleeve, a groove rod, a first permanent magnet and a closed conductor, the first permanent magnet is uniformly arranged on the inner side wall of the damper sleeve, the groove rod with the closed conductor is matched with a ball at an opening at one end of the damper sleeve, the groove rod slides in the damper sleeve, and a rubber gasket is arranged on the inner side of the other end of the damper sleeve.
In the three-dimensional rolling ball shock insulation support, one ends of three horizontal dampers extend into the upper cavity, and groove rods at the ends are connected with the upper support plate through matched first fixing screws and bolt rods with gaskets; the other ends of the three horizontal dampers extend to the outer side of the upper cavity, and the universal hinges at the other ends are connected with the anti-falling baffle of the lower support plate through the matched second fixing screws and the vertical connecting bolt rods.
Three-dimensional spin shock insulation support, annular anticreep baffle sets up in the top edge of bottom suspension bedplate, anticreep baffle and bottom suspension bedplate structure as an organic whole.
The working principle adopted by the invention to solve the technical problems is as follows:
the invention is installed between the foundation (or other fixed objects) and the shock insulation object, the lower support plate is fixedly connected with the foundation (or other fixed objects), and the metal flat plate connected with the upper support plate is fixedly connected with the shock insulation object. When the earthquake comes, the upper support plate of the shock insulation support seat can move on the variable-frequency concave curved surface through the rolling balls to prolong the inherent period of the structure so as to insulate the horizontal earthquake force, and simultaneously, the earthquake energy is converted into potential energy and heat energy generated by friction to consume the earthquake force. In order to make up the defect that the energy consumption capability of the rolling ball shock insulation support is not enough, the horizontal damper can be used for enhancing the capability of the shock insulation support for consuming horizontal seismic force, the reason is that when the upper support plate moves horizontally, the groove rod in the damper drives the closed conductor to cut the magnetic induction generated by the permanent magnet, and electromagnetic resistance is generated between the upper support plate and the closed conductor to stop relative movement lines. The vertical seismic force is isolated and consumed through a vertical shock isolator in the lower support plate. When vertical seismic force is acted on the support, the permanent magnet bearing plate in the vertical shock isolator can move up and down along the vertical direction, and because the permanent magnet on the bearing plate is the same with the permanent magnet magnetic pole of vertical shock isolator bottom, can produce the resistance when the bearing plate moves down, and then consume vertical seismic force.
after an earthquake occurs, because the damping force generated by the conductor cutting magnetic induction lines is related to the speed (F is CV α), when the movement speed of the upper support plate is reduced, the damping force is reduced, and the rolling balls between the support plates are easier to reset.
The invention has the advantages and beneficial effects that:
1. the rolling ball seismic isolation support can effectively isolate horizontal seismic force and can better isolate vertical seismic force.
2. The invention adopts the variable-frequency concave curved surface, and has better shock insulation effect compared with the traditional curved surface form
3. The horizontal damper adopted by the invention can effectively solve the problems of small rolling friction force and poor energy consumption of the traditional rolling ball friction pendulum support. Meanwhile, the damper is made of metal and magnet materials, and compared with dampers with the same functions, the damper is better in durability, and the damping force is not influenced by the temperature.
4. The vertical shock isolator adopted by the invention can skillfully isolate and consume vertical seismic force, and meanwhile, the vertical shock isolator is matched with the horizontal damper without mutual interference.
5. The damping force generated by the horizontal damper of the invention is related to the speed, so that the rolling ball support has better self-resetting function,
6. the shock insulation support provided by the invention has the advantages of good shock insulation effect, strong mobility and convenience in installation, and can be used for shock insulation protection of precious cultural relics and important equipment in museums.
Drawings
FIG. 1 is a schematic top view of a three-dimensional ball-isolated bearing in an embodiment of the invention.
Fig. 2 is a schematic sectional view of fig. 1 through 1.
FIG. 3 is a schematic top view of a rolling ball seismic isolation bearing with a grooved metal plate removed according to an embodiment of the present invention.
Fig. 4 is a front view of an upper bracket plate according to an embodiment of the present invention.
FIGS. 5(a) - (c) are schematic cross-sectional views 2-2 of FIG. 4 in an embodiment of the present invention. Fig. 5(a) is a front view, fig. 5(b) is a plan view, and fig. 5(c) is a side view.
Fig. 6 is a schematic cross-sectional view of fig. 2 taken along line 3-3 in an embodiment of the present invention.
Fig. 7 is a schematic cross-sectional view of fig. 6 taken along line 4-4 in an embodiment of the present invention.
Fig. 8 is a schematic cross-sectional view of fig. 6 taken along line 5-5 in an embodiment of the present invention.
Fig. 9 is a schematic cross-sectional view of fig. 2 taken along line 6-6 in an embodiment of the present invention.
FIG. 10 is a schematic view of a permanent magnet bearing plate with ball bearings according to an embodiment of the present invention.
In the figure: 1 upper bracket board, 2 lower support board, 3 upper bracket board frequency conversion concave surface, 4 lower support board assembled frequency conversion concave surface, 5 metal spin, 6 level is to the attenuator, 7 attenuator sleeve, 8 recess poles, 9 permanent magnet one, 10 closed conductor, 11 ball, 12 rubber gasket, 13 bolt pole of taking the gasket, 14 vertical connecting bolt pole, 15 fixed screw one, 16 universal hinge, 17 fixed screw two, 18 vertical shock absorbers, 19 vertical shock absorber upper junction plate, 20 permanent magnet loading board, 21 permanent magnet two, 22 vertical shock absorber lower junction plate, 23 permanent magnet three, 24 anticollision spring, 25 vertical shock absorber circular stand, 26 fixed screw three, 27 ball bearing, 28 anticreep baffle, 29 grooved support shock insulation metal flat plate.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1 to 10, the three-dimensional rolling ball vibration-isolating support mainly comprises: upper bracket board 1, stainless steel metal spin 5, undersetting board 2, level to attenuator 6, vertical isolator 18, metal anticreep baffle 28, flute profile support isolation thing metal flat plate 29 etc. and specific structure is as follows:
as shown in fig. 1-5, the upper support plate 1 and the lower support plate 2 are arranged oppositely from top to bottom, and the corresponding surfaces of the upper support plate 1 and the lower support plate 2 are respectively provided with a frequency conversion concave curved surface, wherein: three upper bracket board frequency conversion concave curved surface 3 is seted up to the bottom of upper bracket board 1, and three lower bolster board assembled frequency conversion concave curved surface 4 is installed on the upper portion of lower bolster board 2, and upper bracket board frequency conversion concave curved surface 3 and lower bolster board assembled frequency conversion concave curved surface 4 are two liang of correspondences along upper and lower direction and are a set of, set up stainless steel metal spin 5 between every group frequency conversion concave curved surface.
As shown in fig. 1, 2, 6-8, the lower support plate 2 is a cylindrical structure, three lower chambers are uniformly distributed in the middle of the lower support plate 2 along the circumferential direction, and the lower support plate assembly type variable frequency concave curved surface 4 is installed in the three lower chambers through a vertical vibration isolator 18, a vertical vibration isolator upper connecting plate 19, a permanent magnet bearing plate 20, a permanent magnet II 21, a vertical vibration isolator lower connecting plate 22, a permanent magnet III 23, an anti-collision spring 24, a vertical vibration isolator circular column 25 and a fixing screw III 26. Vertical shock absorbers 18 are respectively arranged below each assembled frequency conversion concave curved surface 4, each vertical shock absorber 18 consists of a vertical shock isolation device upper connecting plate 19, a vertical shock isolation device lower connecting plate 22 and a vertical shock isolation device circular upright post 25 connected between the vertical shock isolation device upper connecting plate and the vertical shock isolation device lower connecting plate, the vertical shock isolation device lower connecting plate 22 is connected with the lower support plate 2 through a third fixing screw 26 and a bolt rod which are matched with each other, the vertical shock isolation device circular upright posts 25 are uniformly distributed, a permanent magnet bearing plate 20 with a ball bearing 27 and an anti-collision spring 24 are arranged on each vertical shock isolation device circular upright post 25, the ball bearing 27 is arranged in through holes at four corners of the permanent magnet bearing plate 20, the permanent magnet bearing plate 20 is matched with the vertical shock isolation device circular upright posts 25 through the ball bearing 27, the anti-collision spring 24 is positioned between the vertical shock isolation device, the top at connecting plate 22 under vertical shock insulation device is installed to permanent magnet three 23, and the S utmost point of permanent magnet two 21 and permanent magnet three 23 sets up relatively, and the effect of permanent magnet two 21, permanent magnet three 23 is: under the effect of vertical seismic force, the permanent magnet bearing plate 20 in the vertical shock isolator 18 can move downwards along the vertical direction, and because the second permanent magnet 21 on the permanent magnet bearing plate 20 is the same as the third permanent magnet 23 at the bottom of the vertical shock isolator 18, the two can generate resistance, and then vertical seismic force is consumed.
As shown in fig. 1, 2, 9-10, the top of the upper support plate 1 is covered and buckled with a groove-shaped support seismic isolation metal flat plate 29, and an upper cavity is formed between the groove-shaped part of the groove-shaped support seismic isolation metal flat plate 29 and the upper support plate 1. The top of the upper support plate 1 is additionally provided with three horizontal dampers 6, the three horizontal dampers 6 are uniformly distributed along the circumferential direction, and the central axes of the three horizontal dampers 6 are intersected in the circle center of the circumference. The horizontal damper 6 is composed of a damper sleeve 7, a groove rod 8, a first permanent magnet 9 and a closed conductor 10, wherein the first permanent magnet 9 is uniformly arranged on the inner side wall of the damper sleeve 7, the groove rod 8 with the closed conductor 10 is in sliding fit with a ball 11 at an opening at one end of the damper sleeve 7, so that the groove rod 8 slides in the damper sleeve 7, and a rubber gasket 12 is arranged on the inner side of the other end of the damper sleeve 7. One ends of the three horizontal dampers 6 extend into the upper chamber, and groove rods 8 at the ends are connected with the upper support plate 1 through matched first fixing screws 15 and bolt rods 13 with gaskets; the other ends of the three horizontal dampers 6 extend to the outer side of the upper cavity, the universal hinges 16 at the other ends are connected with the anti-falling baffle 28 of the lower support plate 2 through the second matched fixing screws 17 and the vertical connecting bolt rods 14, the annular anti-falling baffle 28 is arranged at the top edge of the lower support plate 2, and the anti-falling baffle 28 and the lower support plate 2 are of an integrated structure.
In the invention, the meaning of the frequency conversion concave curved surface is as follows: the frequency conversion surface function is converted from an elliptic function, and the function formula is as follows:
where the constant b is the minor axis length (mm) of the ellipse and d is a constant relating the major axis of the ellipse to the displacement of the support, see literature: praneshmarnal and RavinSinha. Behavior of Torque coupling Structures with Variable frequency Pendulum Isolator [ J].JOURNAL OF STRUCTURAL ENGINEERING,2004,130:1041-1054.
The result shows that the horizontal damping rod is positioned above the upper support plate, and the damping force generated by the damper is related to the speed, so that the energy consumption capability of the support can be improved, and the self-resetting of the support is not influenced. Vertical shock insulator is located below the frequency conversion concave surface of bottom suspension bedplate, has solved traditional spin shock insulation support and can't keep apart vertical earthquake power. In addition, the upper support plate is provided with a metal anti-falling baffle plate to overturn.
Claims (7)
1. A three-dimensional rolling ball vibration isolation support is characterized by comprising: upper bracket board, metal spin, bottom suspension bedplate, level support isolation object metal flat board to attenuator, vertical isolator, flute profile, concrete structure as follows:
upper bracket board, bottom suspension bedplate are according to relative setting from top to bottom, are equipped with the concave curved surface of frequency conversion on the corresponding face of upper bracket board, bottom suspension bedplate respectively, wherein: the bottom of the upper support plate is provided with three upper support plate variable-frequency concave curved surfaces, the upper part of the lower support plate is provided with three lower support plate assembled variable-frequency concave curved surfaces, the upper support plate variable-frequency concave curved surfaces and the lower support plate assembled variable-frequency concave curved surfaces correspond to each other in an up-down direction to form a group, and a metal rolling ball is arranged between each group of variable-frequency concave curved surfaces;
the lower support plate is of a cylindrical structure, three lower cavities which are uniformly distributed along the circumferential direction are formed in the middle of the lower support plate, and lower support plate assembly type variable frequency concave curved surfaces are installed in the three lower cavities through vertical shock absorbers respectively;
the top of the upper support plate is covered and buckled with a groove-shaped supporting shock-insulation metal flat plate, and an upper cavity is formed between the groove-shaped part of the groove-shaped supporting shock-insulation metal flat plate and the upper support plate; the top of upper bracket board installs three level additional and is evenly arranged along the circumferencial direction to the attenuator, and the central axis of three level to the attenuator intersects in the centre of a circle of circumference.
2. The three-dimensional rolling ball shock-insulation support seat according to claim 1, wherein vertical shock insulators are respectively placed below each assembled variable-frequency concave curved surface, each vertical shock insulator consists of a vertical shock-insulation device upper connecting plate, a vertical shock-insulation device lower connecting plate and a vertical shock-insulation device circular stand column connected between the vertical shock-insulation device upper connecting plate and the vertical shock-insulation device lower connecting plate, and the vertical shock-insulation device lower connecting plates are connected with the lower support seat plate through a third matched fixing screw and a bolt rod.
3. The three-dimensional rolling ball shock insulation support according to claim 2, wherein the vertical shock insulation device circular columns are four evenly distributed, a permanent magnet bearing plate with ball bearings and an anti-collision spring are installed on each vertical shock insulation device circular column, the ball bearings are installed in through holes at four corners of the permanent magnet bearing plate, the permanent magnet bearing plate is matched with the vertical shock insulation device circular columns through the ball bearings, and the anti-collision spring is located between the vertical shock insulation device upper connecting plate and the permanent magnet bearing plate.
4. The three-dimensional rolling ball shock insulation support according to claim 3, wherein the second permanent magnet is arranged at the bottom of the permanent magnet bearing plate, the third permanent magnet is arranged at the top of the lower connecting plate of the vertical shock insulation device, and the second permanent magnet is arranged opposite to the third permanent magnet.
5. The three-dimensional rolling ball seismic isolation bearing according to claim 1, wherein the horizontal damper comprises a damper sleeve, a groove rod, a first permanent magnet and a closed conductor, the first permanent magnet is uniformly arranged on the inner side wall of the damper sleeve, the groove rod with the closed conductor is matched with a ball at an opening at one end of the damper sleeve, so that the groove rod slides in the damper sleeve, and a rubber gasket is arranged on the inner side of the other end of the damper sleeve.
6. The three-dimensional rolling ball shock-insulation support according to claim 1, wherein one end of each horizontal damper extends into the upper chamber, and a groove rod at the end is connected with the upper support plate through a first matched fixing screw and a bolt rod with a gasket; the other ends of the three horizontal dampers extend to the outer side of the upper cavity, and the universal hinges at the other ends are connected with the anti-falling baffle of the lower support plate through the matched second fixing screws and the vertical connecting bolt rods.
7. The three-dimensional rolling ball vibration-isolating support seat as claimed in claim 6, wherein the annular anti-drop baffle is arranged at the top edge of the lower support seat plate, and the anti-drop baffle and the lower support seat plate are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010084531.9A CN111218997A (en) | 2020-02-10 | 2020-02-10 | Three-dimensional spin shock insulation support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010084531.9A CN111218997A (en) | 2020-02-10 | 2020-02-10 | Three-dimensional spin shock insulation support |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962709A (en) * | 2020-09-11 | 2020-11-20 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
| CN112343200A (en) * | 2020-11-18 | 2021-02-09 | 天津城建大学 | Self-resetting shock insulation support |
| CN114017462A (en) * | 2021-11-01 | 2022-02-08 | 南京工程学院 | Ball groove oil pressure combined type shock attenuation platform |
| CN116537622A (en) * | 2023-05-26 | 2023-08-04 | 中铁四局集团有限公司 | Large-span space steel structure support |
-
2020
- 2020-02-10 CN CN202010084531.9A patent/CN111218997A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962709A (en) * | 2020-09-11 | 2020-11-20 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
| CN111962709B (en) * | 2020-09-11 | 2021-09-24 | 广州大学 | Shock insulation support with strong bearing capacity and convenient replacement |
| CN112343200A (en) * | 2020-11-18 | 2021-02-09 | 天津城建大学 | Self-resetting shock insulation support |
| CN114017462A (en) * | 2021-11-01 | 2022-02-08 | 南京工程学院 | Ball groove oil pressure combined type shock attenuation platform |
| CN116537622A (en) * | 2023-05-26 | 2023-08-04 | 中铁四局集团有限公司 | Large-span space steel structure support |
| CN116537622B (en) * | 2023-05-26 | 2024-01-26 | 中铁四局集团有限公司 | Large-span space steel structure support |
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