CN111894141A - Building structure antidetonation reinforcing connecting device - Google Patents
Building structure antidetonation reinforcing connecting device Download PDFInfo
- Publication number
- CN111894141A CN111894141A CN202010807322.2A CN202010807322A CN111894141A CN 111894141 A CN111894141 A CN 111894141A CN 202010807322 A CN202010807322 A CN 202010807322A CN 111894141 A CN111894141 A CN 111894141A
- Authority
- CN
- China
- Prior art keywords
- supporting
- wallboard
- wall
- shaft sleeve
- limiting
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- E04B1/38—Connections for building structures in general
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a building structure earthquake-resistant reinforcing connecting device, which belongs to the technical field of building equipment and comprises a first wallboard and a second wallboard which are oppositely arranged, wherein a supporting component is arranged between the first wallboard and the second wallboard; the supporting component comprises a supporting shaft and a rotating sleeve, the supporting shaft is arranged on the outer portion of the supporting shaft in a plurality of inner shaft sleeves and each group, the outer portion of each inner shaft sleeve is provided with an outer shaft sleeve in a rotating mode, the outer wall of each inner shaft sleeve is fixedly provided with a second supporting plate, the outer wall of each outer shaft sleeve is fixedly provided with a first supporting plate, and clamping plates are fixedly arranged at two ends of one side, far away from the supporting shaft, of the first supporting plate. Compared with the prior art, the wallboard connecting structure has the advantages of firm and reliable connection and good anti-seismic effect, can offset the vibration in different directions, can maintain the integrity of the wallboard to the maximum extent, effectively avoids the risk of deformation and fracture of the wallboard due to vibration, and improves the safety of wallboard connection.
Description
Technical Field
The invention belongs to the technical field of building equipment, and particularly relates to a building structure earthquake-resistant reinforcing connecting device.
Background
In the construction process of the fabricated building, the prefabricated wall boards are spliced together, and in order to ensure the stability of the building and the construction reliability, a reinforcing and connecting device needs to be additionally arranged at the joint of two adjacent wall boards.
When two sets of wallboards are connected to current fastening connecting device, rigid connection usually, when the wallboard suffered external force striking or took place vibrations because of the earthquake, took place to warp easily between two sets of wallboards of rigid connection and even fracture, consequently, current fastening connecting device has the defect that the antidetonation effect is poor, and the security is not enough.
Disclosure of Invention
In view of the defects in the prior art, an embodiment of the present invention provides a connecting device for seismic reinforcement of a building structure.
In order to solve the technical problems, the invention provides the following technical scheme:
a building structure earthquake-resistant reinforcing connecting device comprises a first wall plate and a second wall plate which are oppositely arranged, wherein a supporting component is arranged between the first wall plate and the second wall plate; the supporting assembly comprises a supporting shaft and a plurality of inner shaft sleeves which are rotatably sleeved outside the supporting shaft, an outer shaft sleeve is rotatably sleeved outside each inner shaft sleeve, a second supporting plate is fixedly arranged on the outer wall of each inner shaft sleeve, a first supporting plate is fixedly arranged on the outer wall of each outer shaft sleeve, clamping plates are fixedly arranged at two ends of one side, far away from the supporting shaft, of each first supporting plate and one end of one side, far away from the supporting shaft, of each second supporting plate, and the first supporting plates are connected with the second supporting plates through elastic ribs; first wallboard one end extends to between two sets of splint of first backup pad lateral part, and second wallboard one end extends to between two sets of splint of second backup pad lateral part, every group the spout that link up around all seting up on the splint, first wallboard and the relative one end of second wallboard all seted up along thickness direction with the corresponding perforation of spout, it has the gag lever post to peg graft in the perforation inside, the gag lever post both ends run through and go out from the spout that corresponds, the inside first elastomer that is used for supporting of spout.
As a further improvement of the invention: and one end of the limiting rod is fixedly provided with a limiting plate, and the other end of the limiting rod is in threaded fit with a limiting retaining ring.
As a further improvement of the invention: the elastic rib sheet is a metal elastic sheet.
As a further improvement of the invention: the second spacing groove that is loop configuration is seted up to the back shaft outer wall, the fixed second stopper that is provided with of inner shaft sleeve inner wall, the second stopper extends to second spacing inslot portion and with second spacing groove clearance fit, second spacing inslot portion encircles and is equipped with a plurality of third elastomers that are used for supporting the second stopper.
As a still further improvement of the invention: the inner shaft sleeve is characterized in that a first limiting groove which is of an annular structure is formed in the outer wall of the inner shaft sleeve, a first limiting block is fixedly arranged on the inner wall of the outer shaft sleeve, the first limiting block extends to the inside of the first limiting groove and is movably matched with the first limiting groove, and a plurality of second elastic bodies used for supporting the first limiting block are annularly arranged inside the first limiting groove.
As a still further improvement of the invention: the first elastic body, the second elastic body and the third elastic body are all springs.
As a still further improvement of the invention: one side of the first supporting plate facing the supporting shaft is provided with a notch matched with the outer shaft sleeve.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the wallboard connecting structure has the advantages of firm and reliable connection and good anti-seismic effect, can offset the vibration in different directions, can maintain the integrity of the wallboard to the maximum extent, effectively avoids the risk of deformation and fracture of the wallboard due to vibration, and improves the safety of wallboard connection.
Drawings
FIG. 1 is a schematic structural view of an earthquake-resistant reinforcing connection device for a building structure;
FIG. 2 is a schematic structural view of a support assembly in a seismic-resistant fastening device for a building structure;
FIG. 3 is an enlarged view of area A in FIG. 2;
FIG. 4 is a schematic view showing the connection of the outer sleeve, the inner sleeve and the support shaft in the earthquake-resistant reinforcing connection device for the building structure;
in the figure: 1-a first wall plate, 2-a clamping plate, 3-a limiting plate, 4-a limiting rod, 5-a sliding groove, 6-a first elastic body, 7-a perforation, 8-a first supporting plate, 9-an elastic rib, 10-a limiting retainer ring, 11-an outer shaft sleeve, 12-an inner shaft sleeve, 13-a supporting shaft, 14-a second wall plate, 15-a second supporting plate, 16-a notch, 17-a first limiting groove, 18-a second elastic body, 19-a first limiting block, 20-a second limiting groove, 21-a third elastic body and 22-a second limiting block.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1-4, the embodiment provides an earthquake-resistant reinforcing and connecting device for a building structure, which includes a first wall plate 1 and a second wall plate 14 that are oppositely arranged, a supporting assembly is arranged between the first wall plate 1 and the second wall plate 14, specifically, the supporting assembly includes a supporting shaft 13 and a plurality of inner shaft sleeves 12 that are rotatably sleeved outside the supporting shaft 13, an outer shaft sleeve 11 is rotatably sleeved outside each inner shaft sleeve 12, a second supporting plate 15 is fixedly arranged on the outer wall of the inner shaft sleeve 12, a first supporting plate 8 is fixedly arranged on the outer wall of the outer shaft sleeve 11, clamping plates 2 are fixedly arranged at two ends of one side of each of the first supporting plate 8 and the second supporting plate 15 away from the supporting shaft 13, and the first supporting plate 8 is connected with the second supporting plate 15 through elastic ribs 9; 1 one end of first wallboard extends to between two sets of splint 2 of 8 lateral parts of first backup pad, and 14 one ends of second wallboard extend to between two sets of splint 2 of 15 lateral parts of second backup pad, every group all set up the spout 5 that link up around on the splint 2, first wallboard 1 and the relative one end of second wallboard 14 all seted up along thickness direction with the corresponding perforation 7 of spout 5, it has gag lever post 4 to peg graft in 7 insides to perforate, 4 both ends of gag lever post run through and go out from the spout 5 that corresponds, 5 inside being provided with of spout are used for supporting gag lever post 4's first elastomer 6.
One end of a first wall plate 1 extends to a position between two groups of clamping plates 2 corresponding to the end part of a first supporting plate 8, one end of a second wall plate 14 extends to a position between two groups of clamping plates 2 corresponding to the end part of a second supporting plate 15, so that the through holes 7 correspond to the sliding grooves 5, the two groups of limiting rods 4 are respectively inserted into the through holes 7 through the sliding grooves 5 formed on the clamping plates 2 at one sides of the first wall plate 1 and the second wall plate 14 and then penetrate out of the sliding grooves 5 formed on the clamping plates 2 at the other sides of the first wall plate 1 and the second wall plate 14, thereby achieving locking between the first wall panel 1 and the second wall panel 14, when the first wall panel 1 and the second wall panel 14 are subjected to vibration and move towards or away from each other, the first wall plate 1 and the second wall plate 14 can drive the limiting rod 4 to slide along the corresponding inner part of the sliding groove 5, and the first elastic body 6 is utilized to provide elastic support for the limiting rod 4 so as to offset the mutual pulling force between the first wall plate 1 and the second wall plate 14; when first wallboard 1 and second wallboard 14 and produce the relative torsion, outer axle sleeve 11 and interior axle sleeve 12 can follow back shaft 13 relative rotation, provide elastic support for first backup pad 8 and second backup pad 15 through elastic rib piece 9, in order to offset the torsion between first wallboard 1 and the second wallboard 14, thereby realize the buffering shock attenuation between first wallboard 1 and the second wallboard 14, avoid the rigid connection between first wallboard 1 and the second wallboard 14, prevent that deformation fracture from appearing in first wallboard 1 and the second wallboard 14.
Specifically, 4 one ends of gag lever post are fixed and are provided with limiting plate 3, and other end screw-thread fit has spacing retaining ring 10, through the setting of limiting plate 3 with spacing retaining ring 10, can press from both sides tightly two sets of splint 2 in first wallboard 1 and 14 tip both sides of second wallboard to stability and reliability of being connected between reinforcing first wallboard 1 and the second wallboard 14.
Specifically, the first elastic body 6 is a spring, and the elastic rib 9 is a metal elastic sheet.
Specifically, the second spacing groove 20 that is the loop configuration is seted up to back shaft 13 outer wall, the fixed second stopper 22 that is provided with in inner shaft sleeve 12 inner wall, second stopper 22 extends to inside and with second spacing groove 20 clearance fit of second spacing groove 20, the inside ring of second spacing groove 20 is equipped with a plurality of supports that are used for of second stopper 22 third elastomer 21.
The inner wall of the inner shaft sleeve 12 is movably matched with the second limiting groove 20 through the second limiting block 22, so that the inner shaft sleeve 12 can rotate and move up and down along the outside of the supporting shaft 13, and when the inner shaft sleeve 12 moves up and down, the third elastic body 21 can elastically support the inner shaft sleeve 12 to offset the vibration of the second wallboard 14 from the vertical direction.
Specifically, first spacing groove 17 that is the loop configuration is seted up to interior axle sleeve 12 outer wall, the fixed first stopper 19 that is provided with of 11 inner walls of outer axle sleeve, first stopper 19 extends to first spacing groove 17 inside and with first spacing groove 17 clearance fit, first spacing groove 17 inside ring is equipped with a plurality of second elastomers 18 that are used for supporting first stopper 19.
The inner wall of the outer shaft sleeve 11 is movably matched with the first limiting groove 17 through the first limiting block 19, so that the outer shaft sleeve 11 can rotate and move up and down along the outer part of the inner shaft sleeve 12, and when the outer shaft sleeve 11 moves up and down, the second elastic body 18 can provide elastic support for the outer shaft sleeve 11 so as to offset the vibration of the first wallboard 1 from the vertical direction.
Through the clearance fit of interior axle sleeve 12 and outer axle sleeve 11, can avoid leading to dislocation from top to bottom to remove between first wallboard 1 and the second wallboard 14 because of vertical vibrations, and then guarantee that first wallboard 1 and second wallboard 14 can maintain same height all the time.
Specifically, the second elastic body 18 and the third elastic body 21 are both springs.
Example 2
Referring to fig. 3, in this embodiment, compared with embodiment 1, a notch 16 adapted to the outer shaft sleeve 11 is formed on one side of the first supporting plate 8 facing the supporting shaft 13, and the notch 16 is disposed to prevent the rotation of the outer shaft sleeve 11 from being blocked, so as to ensure the smooth relative rotation between the inner shaft sleeve 12 and the outer shaft sleeve 11.
Compared with the prior art, the wallboard connecting structure has the advantages of firm and reliable connection and good anti-seismic effect, can offset the vibration in different directions, can maintain the integrity of the wallboard to the maximum extent, effectively avoids the risk of deformation and fracture of the wallboard due to vibration, and improves the safety of wallboard connection.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The earthquake-resistant reinforcing and connecting device for the building structure is characterized by comprising a first wall plate (1) and a second wall plate (14) which are oppositely arranged, wherein a supporting component is arranged between the first wall plate (1) and the second wall plate (14); the supporting assembly comprises a supporting shaft (13) and a plurality of inner shaft sleeves (12) which are rotatably sleeved outside the supporting shaft (13), an outer shaft sleeve (11) is rotatably sleeved outside each inner shaft sleeve (12), a second supporting plate (15) is fixedly arranged on the outer wall of each inner shaft sleeve (12), a first supporting plate (8) is fixedly arranged on the outer wall of each outer shaft sleeve (11), clamping plates (2) are fixedly arranged at two ends of one side, far away from the supporting shaft (13), of each first supporting plate (8) and the corresponding second supporting plate (15), and the first supporting plates (8) are connected with the second supporting plates (15) through elastic ribs (9); first wallboard (1) one end extends to between two sets of splint (2) of first backup pad (8) lateral part, between two sets of splint (2) of second backup pad (15) lateral part, every group spout (5) that link up around all seting up on splint (2), first wallboard (1) and second wallboard (14) relative one end along thickness direction all seted up with corresponding perforation (7) of spout (5), perforation (7) inside grafting has gag lever post (4), gag lever post (4) both ends are run through and are gone out from spout (5) that correspond, spout (5) inside is provided with and is used for supporting first elastomer (6) of gag lever post (4).
2. An earthquake-resistant reinforcing connection device for building structures according to claim 1, characterized in that one end of the limiting rod (4) is fixedly provided with a limiting plate (3), and the other end is in threaded fit with a limiting retainer ring (10).
3. An earthquake-resistant reinforcing connection device for building structures according to claim 1, characterised in that said elastic fins (9) are metal domes.
4. An earthquake-resistant reinforcing and connecting device for building structures according to any one of claims 1 to 3, wherein a second limiting groove (20) in an annular structure is formed in the outer wall of the supporting shaft (13), a second limiting block (22) is fixedly arranged on the inner wall of the inner shaft sleeve (12), the second limiting block (22) extends into the second limiting groove (20) and is movably matched with the second limiting groove (20), and a plurality of third elastic bodies (21) used for supporting the second limiting block (22) are annularly arranged in the second limiting groove (20).
5. An earthquake-resistant, reinforcing and connecting device for building structures according to claim 4, characterized in that the outer wall of the inner shaft sleeve (12) is provided with a first limiting groove (17) which is of an annular structure, the inner wall of the outer shaft sleeve (11) is fixedly provided with a first limiting block (19), the first limiting block (19) extends into the first limiting groove (17) and is movably matched with the first limiting groove (17), and a plurality of second elastic bodies (18) which are used for supporting the first limiting block (19) are annularly arranged in the first limiting groove (17).
6. An earthquake-resistant reinforcing connection device for building structures according to claim 5, characterized in that said first elastomer (6), said second elastomer (18) and said third elastomer (21) are all springs.
7. An earthquake-resistant reinforcing and connecting device for building structures according to claim 1, characterized in that the side of the first supporting plate (8) facing the supporting shaft (13) is provided with a notch (16) adapted to the outer sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807322.2A CN111894141B (en) | 2020-08-12 | 2020-08-12 | Building structure antidetonation reinforcing connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807322.2A CN111894141B (en) | 2020-08-12 | 2020-08-12 | Building structure antidetonation reinforcing connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111894141A true CN111894141A (en) | 2020-11-06 |
| CN111894141B CN111894141B (en) | 2021-06-18 |
Family
ID=73230203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010807322.2A Active CN111894141B (en) | 2020-08-12 | 2020-08-12 | Building structure antidetonation reinforcing connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111894141B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026963A (en) * | 2021-03-19 | 2021-06-25 | 同济大学 | Deformation-adaptive embedded external wall panel and column connecting structure and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079792A (en) * | 1992-03-25 | 1993-12-22 | 台斯卡使用技术有限公司 | The linkage of revetment member |
| CN205134601U (en) * | 2015-11-02 | 2016-04-06 | 上海市机械施工集团有限公司 | Building antidetonation power consumption device |
| CN108560794A (en) * | 2018-06-27 | 2018-09-21 | 张刚 | Outer wall structure of building |
| CN208329361U (en) * | 2018-05-17 | 2019-01-04 | 何亮 | A kind of combined type assembly building wall board |
| KR20190073657A (en) * | 2017-12-19 | 2019-06-27 | 권택원 | Device for protecting a falling accident of wall-opening |
| CN209194770U (en) * | 2018-10-18 | 2019-08-02 | 唐山孚达建筑材料有限公司 | A kind of detachable heat-insulation wall plate |
| CN110485608A (en) * | 2019-08-26 | 2019-11-22 | 深圳信息职业技术学院 | A kind of antidetonation splicing construction between floor |
-
2020
- 2020-08-12 CN CN202010807322.2A patent/CN111894141B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079792A (en) * | 1992-03-25 | 1993-12-22 | 台斯卡使用技术有限公司 | The linkage of revetment member |
| CN205134601U (en) * | 2015-11-02 | 2016-04-06 | 上海市机械施工集团有限公司 | Building antidetonation power consumption device |
| KR20190073657A (en) * | 2017-12-19 | 2019-06-27 | 권택원 | Device for protecting a falling accident of wall-opening |
| CN208329361U (en) * | 2018-05-17 | 2019-01-04 | 何亮 | A kind of combined type assembly building wall board |
| CN108560794A (en) * | 2018-06-27 | 2018-09-21 | 张刚 | Outer wall structure of building |
| CN209194770U (en) * | 2018-10-18 | 2019-08-02 | 唐山孚达建筑材料有限公司 | A kind of detachable heat-insulation wall plate |
| CN110485608A (en) * | 2019-08-26 | 2019-11-22 | 深圳信息职业技术学院 | A kind of antidetonation splicing construction between floor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113026963A (en) * | 2021-03-19 | 2021-06-25 | 同济大学 | Deformation-adaptive embedded external wall panel and column connecting structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111894141B (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111894141B (en) | Building structure antidetonation reinforcing connecting device | |
| CN210013468U (en) | Template strutting arrangement for building engineering | |
| KR101774433B1 (en) | A seismic structure of solar power generation device and energy storage device | |
| CN113356281A (en) | Assembled building damper | |
| JP2016070352A (en) | Forced double-surface slide supporting device for structure | |
| JP7157577B2 (en) | Ceiling frame suspension structure | |
| EP2696011B1 (en) | Earthquake-proof connecting device for connecting structural elements | |
| JP5795516B2 (en) | Fall prevention device | |
| JP2013155593A (en) | Structure of building brace | |
| KR102269457B1 (en) | Assemble Building Panel Fastening Device | |
| JP4057195B2 (en) | Seismic isolation building | |
| JP2012188849A (en) | Tool for external scaffold | |
| JP4449408B2 (en) | Locking suppression device for seismic isolation structures | |
| JP3666040B2 (en) | 3D seismic isolation device | |
| CN113502942A (en) | Assembly type building wall traceless connecting device | |
| CN214033772U (en) | Anti-seismic building foundation | |
| RU2427693C1 (en) | Support of quakeproof structure | |
| JP4249104B2 (en) | Beam reinforcement structure and beam reinforcement method | |
| JP6425077B2 (en) | Suspended ceiling structure | |
| JP2008280818A (en) | Base isolation structure of building and building adopting the same | |
| CN218177643U (en) | Deformation-preventing structure and telescopic sleeve | |
| CN214247005U (en) | Pull structure of fireproof door | |
| JP2001122554A (en) | Elevator device for building of intermediate base isolation structure | |
| CN217301419U (en) | Anti-seismic support for building | |
| CN218292720U (en) | Lifting scaffold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |