CN114737710A - A shock attenuation annex for furred ceiling bolt - Google Patents
A shock attenuation annex for furred ceiling bolt Download PDFInfo
- Publication number
- CN114737710A CN114737710A CN202210429569.4A CN202210429569A CN114737710A CN 114737710 A CN114737710 A CN 114737710A CN 202210429569 A CN202210429569 A CN 202210429569A CN 114737710 A CN114737710 A CN 114737710A
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- Prior art keywords
- steel plate
- steel
- screw rod
- attachment
- steel sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000035939 shock Effects 0.000 title claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 115
- 239000010959 steel Substances 0.000 claims abstract description 115
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
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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
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/006—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for hanging lighting fixtures or other appliances to the framework of the ceiling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
-
- 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
- E04H9/0237—Structural braces with damping devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
- E04B2009/186—Means for suspending the supporting construction with arrangements for damping vibration
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a shock-absorbing accessory for a suspended ceiling bolt, which comprises a screw rod, wherein a first steel plate and a second steel plate are sleeved on the screw rod at intervals, the first steel plate and the second steel plate are connected through a plurality of friction-type dampers, one end of each damper is connected with the first steel plate, the other end of each damper is connected with the second steel plate, the plurality of dampers are obliquely pulled, the dampers, the first steel plate and the second steel plate integrally form a circular truncated cone-shaped structure, a supporting spring is sleeved on the screw rod, and the supporting spring is arranged between the inner side walls of the first steel plate and the second steel plate. The supporting spring and the rubber backing plate at pretension annex, center in this application can slow down the effect of vibration to the screw rod and by the connector through plastic deformation power consumption, can effectively prevent the nut not hard up to the supporting spring pre-compaction when the installation simultaneously, has improved butt joint stability and anti-seismic performance between bolt and screw rod.
Description
Technical Field
The invention relates to the technical field of damping equipment components, in particular to a damping accessory for a ceiling bolt.
Background
Bolt connections are widely used in connection of suspended ceilings and other equipment, such as lamps and the like. Structurally, the screw rod and the nut are combined. The existing common bolt or damping bolt is easy to loose due to large vibration of a floor slab during earthquake or large-scale mechanical operation, thereby affecting the connection stability and damping function and bringing certain potential safety hazards to personal and property safety.
Disclosure of Invention
The invention aims to provide a shock-absorbing accessory for a suspended ceiling bolt, which can effectively prevent the bolt from loosening and slow down the vibration of a joint and improve the shock resistance.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a shock absorption accessory for a suspended ceiling bolt, which comprises a screw rod, wherein a first steel plate and a second steel plate are sleeved on the screw rod at intervals, the first steel plate and the second steel plate are connected through a plurality of friction dampers, one end of each damper is connected with the first steel plate, the other end of each damper is connected with the second steel plate, the plurality of dampers are obliquely pulled, the dampers, the first steel plate and the second steel plate integrally form a circular truncated cone-shaped structure, a supporting spring is sleeved on the screw rod, and the supporting spring is arranged between the inner side walls of the first steel plate and the second steel plate.
For the above technical solution, the applicant has further optimization measures.
Optionally, the outside of second steel sheet is provided with pretension annex fixed connection thin wall cylinder on the lateral wall of second steel sheet, thin wall cylinder cover is established the outside of screw rod, the other end fixed connection of thin wall cylinder the inside wall of pretension annex, the thin wall cylinder be used for doing pretension annex provides the support, correspondingly the hole of stepping down that holds the screw rod to pass has equally on the pretension annex.
Furthermore, the pretensioning accessory is composed of two pretensioning steel plates crossed in a cross manner.
Optionally, the damper is of a telescopic double-sleeve structure, and includes an inner sleeve and an outer sleeve which are connected together in a sleeved manner, the outer end of the outer sleeve is connected to the second steel plate, the outer end of the inner sleeve is connected to the first steel plate, and the sleeve is a circular or square steel pipe.
Further, a friction sliding surface is arranged between the surfaces of the damper, which are in contact with the inner sleeve and the outer sleeve.
Furthermore, the included angle between the damper and the first steel plate is 35-60 degrees.
Optionally, the first steel plate and the second steel plate are both annular, a through hole for allowing the screw to pass through is formed in the center of the first steel plate and the second steel plate, and a connection point of the damper and the first steel plate and a connection point of the damper and the second steel plate are located at the edge positions of the first steel plate and the second steel plate.
Optionally, the top side of the supporting spring is fixedly connected with the inner side wall of the first steel plate, and the bottom side of the supporting spring is fixedly connected with the inner side wall of the second steel plate.
Optionally, the support spring is a high compression spring and imparts a pre-stress to the first and second steel plates when installed.
Further, the outer side of the first steel plate is covered with a rubber base plate, and the thickness of the rubber base plate is 5 mm-10 mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the vibration-damping and energy-consuming connecting piece for the light steel keel and the wall body, the bolts are effectively prevented from loosening and the vibration of the connecting part is reduced through the pre-pressed springs, the dampers and the pre-tensioning accessories arranged laterally and the like, the screw rod, the connected body connected with the screw rod and the floor slab can shake during vibration, the dampers can reduce the effect of the vibration on the screw rod and the connected body through friction energy consumption, the pre-tensioning accessories, the supporting springs in the center and the rubber base plate can reduce the effect of the vibration on the screw rod and the connected body through plastic deformation energy consumption, meanwhile, the supporting springs are pre-pressed during installation, nuts can be effectively prevented from loosening, and the butt joint stability and the anti-seismic performance between the bolts and the screw rod are improved.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic view of the overall construction of a shock absorbing attachment for a ceiling bolt according to one embodiment of the present invention;
FIG. 2 is a schematic bottom view of the shock absorbing attachment for a ceiling bolt shown in FIG. 1;
FIG. 3 is a schematic view of the damper of the shock absorbing attachment for a ceiling bolt shown in FIG. 1.
Wherein the reference numerals are as follows:
1 is a screw rod, 201 is a rubber cushion plate, 202 is a first steel plate, 3 is a damper, 301 is an inner sleeve, 302 is an outer sleeve, 303 is a friction sliding surface, 401 is a supporting spring, 501 is a second steel plate, 502 is a pretensioning accessory, and 503 is a thin-walled cylinder.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
This embodiment has described a shock attenuation annex for furred ceiling bolt, as shown in fig. 1 and 2, including screw rod 1, the interval ground cover is equipped with first steel sheet 202 and second steel sheet 501 between first steel sheet 202 and second steel sheet 501 are connected through the attenuator 3 of many friction types, the one end of attenuator 3 is connected first steel sheet 202, second steel sheet 501, many are connected to the other end attenuator 3 is the slant and draws and establish, and attenuator 3 constitutes the structure of round platform form with first steel sheet 202 and second steel sheet 501 is whole on screw rod 1 has cup jointed supporting spring 401, supporting spring 401 sets up between the inside wall of first steel sheet 202 and second steel sheet 501.
The first steel plate 202 and the second steel plate 501 are both annular, in this embodiment, the diameter of the first steel plate 202 is large, the diameter of the second steel plate 501 is smaller than that of the first steel plate 202, a through hole for allowing the screw rod 1 to pass through is formed in the center of the two steel plates, a connection point of the damper 3 and the first steel plate 202 and the second steel plate 501 is located at the edge position of the first steel plate 202 and the second steel plate 501, and then the damper 3 and the first steel plate 202 and the second steel plate 501 are combined to form a truncated cone-shaped platform structure. The damper 3 is preferably connected with the first steel plate 202 and the second steel plate 501 in a rotating manner, and the included angle between the damper 3 and the first steel plate 202 is generally, but not limited to, 35-60 °.
The top side of the supporting spring 401 is fixedly connected with the inner side wall of the first steel plate 202, and the bottom side of the supporting spring 401 is fixedly connected with the inner side wall of the second steel plate 501. The support spring 401 is a high compression spring and gives a pre-stress to the first steel plate 202 and the second steel plate 501 at the time of installation.
Under preferred embodiment, the outside of second steel sheet 501 is provided with pretension annex 502 fixed connection thin-walled cylinder 503 on the lateral wall of second steel sheet 501, thin-walled cylinder 503 cover is established the outside of screw rod 1, the other end fixed connection of thin-walled cylinder 503 pretension annex 502's inside wall, thin-walled cylinder 503 is used for pretension annex 502 provides the support, correspondingly it gives way the hole to have the appearance screw rod 1 to pass on the pretension annex 502 equally. The pretensioning attachment 502 is formed by two pretensioning steel plates crossed in a cross manner.
As shown in fig. 3, the damper 3 is a telescopic double-tube structure, and includes an inner tube 301 and an outer tube 302 sleeved and connected together, the outer end of the outer tube 302 is connected to the second steel plate 501, the outer end of the inner tube 301 is connected to the first steel plate 202, and the tubes are circular or square steel tubes. A frictional sliding surface 303 is provided between the surfaces of the damper where the inner sleeve 301 and the outer sleeve 302 contact.
The outer end of the outer sleeve 302 is rotatably connected to the second steel plate 501 by a pin, and the outer end of the inner sleeve 301 is also rotatably connected to the first steel plate 202 by a pin. One of the pin shaft or the pin column is fixed at the outer side end of the outer sleeve 302, and the other pin shaft or the pin column is fixed at the edge of the second steel plate 501, so that the outer sleeve 302 and the second steel plate 501 form a rotary connection; one of the pin shaft or the pin post is fixed at the outer end of the inner sleeve 301, and the other pin shaft or the pin post is fixed at the edge of the first steel plate 202, so that the inner sleeve 301 and the first steel plate 202 form a rotary connection.
The frictional sliding surface 303 is formed by arranging an outer diameter of the inner sleeve 301 equal to an inner diameter of the outer sleeve 302, inserting the inner sleeve 301 into the outer sleeve 302, and arranging rough frictional surfaces on an outer side wall surface of the inner sleeve 301 and an inner side wall surface of the outer sleeve 302 at a joint of the inner sleeve 301 and the outer sleeve 302.
In addition, in order to improve the shock resistance and the buffering performance of the first steel plate 202, the rubber base plate 201 covers the outer side of the first steel plate 202, the thickness of the rubber base plate 201 can be controlled to be 5 mm-10 mm, and other numerical value ranges can be adopted and determined according to the specific requirements of users.
According to the vibration-damping and energy-consuming connecting piece for the light steel keel and the wall body, the bolts are effectively prevented from loosening and the vibration of the connecting part is reduced through the pre-pressed springs, the dampers and the pre-tensioning accessories arranged laterally and the like, the screw rod, the connected body connected with the screw rod and the floor slab can shake during vibration, the dampers can reduce the effect of the vibration on the screw rod and the connected body through friction energy consumption, the pre-tensioning accessories, the supporting springs in the center and the rubber base plate can reduce the effect of the vibration on the screw rod and the connected body through plastic deformation energy consumption, meanwhile, the supporting springs are pre-pressed during installation, nuts can be effectively prevented from loosening, and the butt joint stability and the anti-seismic performance between the bolts and the screw rod are improved.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a shock attenuation annex for furred ceiling bolt, its characterized in that includes screw rod (1), and the interval ground cover is equipped with first steel sheet (202) and second steel sheet (501) are connected through attenuator (3) of many friction types between first steel sheet (202) and second steel sheet (501), the one end of attenuator (3) is connected first steel sheet (202), second steel sheet (501) are connected to the other end, many attenuator (3) are the slant and draw and establish, and attenuator (3) and first steel sheet (202) and second steel sheet (501) wholly constitute the structure of round platform form cup jointed supporting spring (401) on screw rod (1), supporting spring (401) set up between the inside wall of first steel sheet (202) and second steel sheet (501).
2. The shock absorbing attachment for the ceiling bolt according to claim 1, wherein a pre-tensioning attachment (502) is arranged on the outer side of the second steel plate (501), a thin-walled cylinder (503) is fixedly connected to the outer side wall of the second steel plate (501), the thin-walled cylinder (503) is sleeved on the outer side of the screw rod (1), the other end of the thin-walled cylinder (503) is fixedly connected to the inner side wall of the pre-tensioning attachment (502), the thin-walled cylinder (503) is used for providing support for the pre-tensioning attachment (502), and correspondingly, the pre-tensioning attachment (502) is also provided with a hole for allowing the screw rod (1) to pass through.
3. A shock absorbing attachment for a ceiling bolt according to claim 2, characterised in that the pre-tensioned attachment (502) consists of two cross-wise intersecting pre-tensioned steel plates.
4. The shock absorbing attachment for a ceiling bolt according to claim 1, wherein the damper (3) is of a telescopic double-sleeve structure, and comprises an inner sleeve (301) and an outer sleeve (302) which are sleeved and connected together, the outer end of the outer sleeve (302) is connected with the second steel plate (501), the outer end of the inner sleeve (301) is connected with the first steel plate (202), and the sleeve is a round or square steel pipe.
5. A shock absorbing attachment for a ceiling bolt according to claim 4, characterised in that a frictional sliding surface is provided between the surfaces of the damper where the inner sleeve (301) and the outer sleeve (302) are in contact.
6. A shock absorbing attachment for a ceiling bolt according to claim 4 or 5 characterised in that the angle between the damper (3) and the first steel plate (202) is between 35 ° and 60 °.
7. The shock-absorbing attachment for a ceiling bolt according to claim 1, wherein the first steel plate (202) and the second steel plate (501) are both annular, a through hole for the screw (1) to pass through is formed in the center of the first steel plate and the second steel plate, and the connection point of the damper (3) and the first steel plate (202) and the second steel plate (501) is located at the edge position of the first steel plate (202) and the second steel plate (501).
8. A shock absorbing attachment for a ceiling bolt according to claim 1, characterised in that the top side of the supporting spring (401) is fixedly connected to the inner side wall of the first steel plate (202), and the bottom side of the supporting spring (401) is fixedly connected to the inner side wall of the second steel plate (501).
9. A shock absorbing attachment for a ceiling bolt according to claim 1 or 8, characterised in that the supporting spring (401) is a high compression spring and gives a pre-stress to the first and second steel plates (202, 501) when mounted.
10. The shock absorbing attachment for a ceiling bolt according to claim 9, characterized in that the outside of the first steel plate (202) is covered with a rubber pad plate (201), the rubber pad plate (201) having a thickness of between 5mm and 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429569.4A CN114737710A (en) | 2022-04-22 | 2022-04-22 | A shock attenuation annex for furred ceiling bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429569.4A CN114737710A (en) | 2022-04-22 | 2022-04-22 | A shock attenuation annex for furred ceiling bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114737710A true CN114737710A (en) | 2022-07-12 |
Family
ID=82283211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210429569.4A Pending CN114737710A (en) | 2022-04-22 | 2022-04-22 | A shock attenuation annex for furred ceiling bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737710A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565165A (en) * | 2014-11-21 | 2015-04-29 | 广西智通节能环保科技有限公司 | Multi-spring steel plate damper |
| RU2552426C1 (en) * | 2014-05-15 | 2015-06-10 | Олег Савельевич Кочетов | Shock absorber for explosion-proof objects |
| CN106286669A (en) * | 2016-10-17 | 2017-01-04 | 安徽信泽科技有限公司 | The coiled spring damper that a kind of early stage rigidity is predeterminable |
| CN108071866A (en) * | 2017-11-17 | 2018-05-25 | 江苏壹鼎崮机电科技有限公司 | A kind of efficient locking suspension and support for tube body installation |
| CN110260087A (en) * | 2018-09-29 | 2019-09-20 | 科瑞格建筑环境技术(北京)有限公司 | A kind of height-adjustable energy dissipation type damping shock proof bracket |
| CN110453801A (en) * | 2019-07-25 | 2019-11-15 | 湖北文理学院 | A kind of multi-direction damping protection system and its shock-dampening method of tall and slender structure |
| CN113202902A (en) * | 2021-06-07 | 2021-08-03 | 唐剑军 | Damping base for rail transit management equipment |
-
2022
- 2022-04-22 CN CN202210429569.4A patent/CN114737710A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2552426C1 (en) * | 2014-05-15 | 2015-06-10 | Олег Савельевич Кочетов | Shock absorber for explosion-proof objects |
| CN104565165A (en) * | 2014-11-21 | 2015-04-29 | 广西智通节能环保科技有限公司 | Multi-spring steel plate damper |
| CN106286669A (en) * | 2016-10-17 | 2017-01-04 | 安徽信泽科技有限公司 | The coiled spring damper that a kind of early stage rigidity is predeterminable |
| CN108071866A (en) * | 2017-11-17 | 2018-05-25 | 江苏壹鼎崮机电科技有限公司 | A kind of efficient locking suspension and support for tube body installation |
| CN110260087A (en) * | 2018-09-29 | 2019-09-20 | 科瑞格建筑环境技术(北京)有限公司 | A kind of height-adjustable energy dissipation type damping shock proof bracket |
| CN110453801A (en) * | 2019-07-25 | 2019-11-15 | 湖北文理学院 | A kind of multi-direction damping protection system and its shock-dampening method of tall and slender structure |
| CN113202902A (en) * | 2021-06-07 | 2021-08-03 | 唐剑军 | Damping base for rail transit management equipment |
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