CN110510496B - Pre-buried hoist and mount piece of prefabricated stair - Google Patents
Pre-buried hoist and mount piece of prefabricated stair Download PDFInfo
- Publication number
- CN110510496B CN110510496B CN201910766976.2A CN201910766976A CN110510496B CN 110510496 B CN110510496 B CN 110510496B CN 201910766976 A CN201910766976 A CN 201910766976A CN 110510496 B CN110510496 B CN 110510496B
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- embedded
- hoisting
- head
- groove
- pull ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention relates to the field of pre-installed stair hoisting, and particularly discloses a pre-embedded hoisting piece for a prefabricated stair, which comprises a pre-embedded assembly and a telescopic hoisting assembly sleeved between the pre-embedded assembly and the pre-embedded assembly, wherein the pre-embedded assembly is composed of a pre-embedded pipe and an end cover screwed with the lower end of the pre-embedded pipe, a buffer cavity is arranged in the middle of the pre-embedded pipe, a guide hole is formed from the upper end of the buffer cavity to the top of the pre-embedded pipe, an end cover mounting groove is formed in the lower end of the buffer cavity, and the telescopic hoisting assembly is composed of a telescopic head and a buffer sleeve, a bearing ring and a reset spring sleeved on; the buffer cavity of the telescopic head in the middle of the embedded pipe is elastically stretched through the reset spring, and the hidden embedded structure prevents the side surface of the telescopic head from contacting with external dust, so that the normal hoisting of the prefabricated staircase can be ensured; the embedded holes of the prefabricated staircase are effectively supported through the embedded pipes, so that the structural strength of the embedded position of the embedded hoisting piece is improved.
Description
Technical Field
The invention relates to the technical field of prefabricated staircase hoisting, in particular to a prefabricated staircase pre-embedded hoisting piece.
Background
The prefabricated building refers to a building construction mode of a building with use functions, wherein part or all components of the building are produced in a component prefabricating factory and then are transported to a construction site in a corresponding transportation mode, and the components are assembled by adopting a reliable installation mode and an installation machine. Compared with the field construction, prefabricated assembled construction has construction convenience, the engineering progress is fast, little and the quality of building element obtains advantages such as assurance easily to the surrounding environment influence, prefabricated staircase belongs to a common building structure subassembly among the prefabricated assembled building, compare in traditional cast-in-place stair, prefabricated staircase has that the installation rate is fast, water conservation, festival ground, the noise reduction, a great deal of advantage such as material saving, the hoist and mount of prefabricated staircase is generally through predetermineeing the screw thread lifting eye on the step face at both ends on the stair bottom, or predetermine the screw thread lifting eye in the both sides of stair, the hoist and mount problem of prefabricated staircase has been solved to a certain extent to this kind of hoist and mount mode, but it still has following drawback at the in-process of in-service use:
1. in the transportation or stacking process, sundries are easy to enter the threaded lifting holes, so that the lifting holes are blocked, and the lifting of the pre-installed stairs is influenced;
2. the threaded lifting holes are preset in the pre-installed stairs, so that the strength of the stairs at corresponding positions can be reduced;
3. when in lifting, the lifting bolt needs to be additionally equipped to meet the lifting condition, so that the complexity of lifting is improved.
Disclosure of Invention
The invention aims to provide a prefabricated stair embedded hoisting piece to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pre-buried hoist and mount piece of prefabricated stair, the flexible hoist and mount subassembly of establishing of cover in the middle of including pre-buried subassembly and pre-buried subassembly, pre-buried subassembly comprises the end cover of pre-buried pipe and pre-buried tub of lower extreme spiro union, the centre of pre-buried pipe is equipped with the cushion chamber, has seted up the guiding hole to the top of pre-buried pipe by the upper end of cushion chamber, the end cover mounting groove has been seted up to the lower extreme of cushion chamber, flexible hoist and mount subassembly comprises cushion collar, bearing ring, the reset spring that establish of cover on flexible head and the flexible first excircle, the centre of flexible head is equipped with the guide post, and at the upper end fixedly connected with hoist and mount head of guide post, and it has the lifting hook to articulate in the side of hoist and mount head, the lower extreme of guide.
Preferably, the outer circle of the embedded pipe is provided with anti-falling grooves I which are uniformly distributed and arranged in the axial direction, and the outer circle of the embedded pipe is provided with anti-falling grooves II which are uniformly distributed and arranged in the circumferential direction.
Preferably, the middle of the hoisting head is provided with uniformly distributed hoisting holes, the side surfaces of the hoisting holes are provided with lifting hook mounting grooves with groove structures on the excircle of the hoisting head, and the side surfaces of the lifting hook mounting grooves are fixedly inserted with hinge shafts matched with the lifting hooks.
Preferably, the top end of the hoisting head is annularly provided with a pull ring groove with a groove body structure, the end part of the pull ring groove is provided with a socket, and a pull ring which is in socket fit with the socket is arranged in the pull ring groove.
Preferably, the pull ring is of a circular ring structure, and the two ends of the pull ring are fixedly connected with inserting rods which are inserted and matched with the inserting holes.
Preferably, the middle of the lower end face of the guide post is provided with a guide groove of a conical groove body structure, and the middle of the upper end face of the limiting head is provided with a guide cone matched with the guide groove.
Preferably, the inner wall of the buffer sleeve is annularly provided with a buffer cavity, the outer wall of the buffer sleeve is provided with air guide holes which are annularly and uniformly distributed, and the buffer cavity is communicated with the air guide holes through connecting holes.
Preferably, the end cover is composed of a cover plate with a disc-shaped plate-shaped structure and a locking block arranged at the lower end of the cover plate, the cover plate is in threaded connection with the end cover mounting groove, the outer side of the locking block is of a regular hexagonal structure, and a groove body with a regular hexagonal structure is arranged in the middle of the locking block.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:
1. the buffer cavity of the telescopic head in the middle of the embedded pipe is elastically stretched through the reset spring, the telescopic head is pulled out of the embedded pipe for use when lifting is needed, and the telescopic head retracts to the original position when lifting is not needed, so that the side surface of the telescopic head is prevented from contacting with external dust, and the normal lifting of the prefabricated staircase can be guaranteed;
2. the embedded holes of the prefabricated staircase are effectively supported through the embedded pipes, so that the strength of the prefabricated staircase cannot be reduced, and the structural strength of the embedded position of the embedded hoisting piece can be improved;
3. the side surface of the hoisting head is provided with the hoisting hole, and the hoisting hook is hinged in the hoisting hook mounting groove on the side surface of the hoisting head, so that the hoisting can be carried out in the hoisting hole in a rope threading way during use, and the hoisting can also be directly carried out by adopting the hoisting hook.
Drawings
FIG. 1 is a schematic diagram of a pre-buried structure in a prefabricated staircase according to the present invention;
FIG. 2 is a side elevational view of the structural shaft of the present invention;
FIG. 3 is a side half sectional view of the structural shaft of the present invention;
FIG. 4 is a structural view of a half section of the embedded assembly at the shaft side;
FIG. 5 is a side half-sectional structural view of the telescopic hoisting assembly;
FIG. 6 is an enlarged view of a portion of the structure at A in FIG. 5;
FIG. 7 is an enlarged view of a portion of the structure at B in FIG. 5;
FIG. 8 is an exploded side view of the telescoping hoist assembly;
fig. 9 is an enlarged view of a portion of the structure at C in fig. 8.
In the figure: 1. pre-burying the assembly; 2. a telescopic hoisting component; 3. pre-burying a pipe; 4. an end cap; 5. a telescopic head; 6. a buffer sleeve; 7. a pressure-bearing ring; 8. a return spring; 9. a pull ring; 10. a hook; 301. a buffer chamber; 302. a guide hole; 303. an end cover mounting groove; 304. a drop-proof groove I; 305. a drop-proof groove II; 401. a cover plate; 402. a locking block; 501. a guide post; 502. hoisting the head; 503. a limiting head; 504. a connecting bolt; 505. a guide groove; 506. a guide cone; 507. hoisting holes; 508. a ring pulling groove; 509. a jack; 510. a hook mounting groove; 511. hinging a shaft; 601. a buffer chamber; 602. an air vent; 603. connecting holes; 901. and an inserting rod is connected.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 to 9, the present invention provides a technical solution: a prefabricated staircase pre-buried hoisting piece comprises a pre-buried component 1 and a telescopic hoisting component 2 sleeved in the middle of the pre-buried component 1, wherein the pre-buried component 1 is composed of a pre-buried pipe 3 and an end cover 4 in threaded connection with the lower end of the pre-buried pipe 3, a buffer cavity 301 is arranged in the middle of the pre-buried pipe 3, a guide hole 302 is formed in the upper end of the buffer cavity 301 to the top of the pre-buried pipe 3, an end cover installation groove 303 is formed in the lower end of the buffer cavity 301, the telescopic hoisting component 2 is composed of a telescopic head 5 and a buffer sleeve 6, a bearing ring 7 and a reset spring 8, the buffer sleeve 6, the bearing ring 7 and the reset spring 8 are sleeved on the outer circle of the telescopic head 5, a guide column 501 is arranged in the middle of the telescopic head 5, a hoisting head 502 is fixedly connected to the upper end of the guide column 501, a lifting hook 10 is hinged to the side face of the hoisting head 502, the lower end of the guide column 501 is, the whole embedded hoisting assembly is not easy to rust, and the service life of the embedded hoisting assembly is prolonged.
In fig. 4: the outer circle of the embedded pipe 3 is provided with anti-drop grooves I304 which are uniformly distributed and arranged in the axial direction, the outer circle of the embedded pipe 3 is provided with anti-drop grooves II 305 which are uniformly distributed and arranged in the circumferential direction, the embedded pipe 3 is wholly axially limited in the embedded hole through the anti-drop grooves I304, the embedded pipe 3 is wholly rotated and limited in the embedded hole through the anti-drop grooves II 305, and the embedded pipe 3 can be firmly fixed in the embedded hole and cannot drop out.
In fig. 5: hoisting hole 507 that the equipartition was arranged is seted up to the centre of hoist and mount head 502, and at the side of hoist and mount hole 507 and set up the lifting hook mounting groove 510 of cell body structure on the excircle of hoist and mount head 502, and the fixed articulated shaft 511 of joining in marriage mutually with lifting hook 10 of inserting in the side of lifting hook mounting groove 510, lifting hook 10 can advance to roll out in lifting hook mounting groove 510 around articulated shaft 511, during the hoist and mount, can adopt the rope to pass hoist and mount hole 507 fixed, also can follow lifting hook mounting groove 510 with lifting hook 10 and roll out, directly cup joint the rope on the drag hook of lifting hook 10 side, these two kinds of hoisting methods, make the hoist and mount of whole pre-buried hoist and mount piece more nimb.
In fig. 5: the top end of the hoisting head 502 is annularly provided with a pull ring groove 508 with a groove structure, the end part of the pull ring groove 508 is provided with a plug socket 509, the pull ring groove 508 is internally provided with pull rings 9 which are plugged and matched with the plug socket 509, wherein the number of the plug sockets 509 is two, and the plug sockets 509 are arranged on the end surface of the pull ring groove 508 in a staggered manner, so that the pull rings 9 plugged and matched on the side surfaces of the plug sockets 509 form an elastic pull ring structure.
In fig. 9: the pull ring 9 is a circular ring structure, and the two ends of the pull ring 9 are fixedly connected with insertion rods 901 inserted and matched with the insertion holes 509, when the pull ring 9 is installed in the pull ring groove 508, the pull ring 9 is firstly expanded, so that the insertion rods 901 are respectively inserted and matched in the insertion holes 509 at the two ends of the pull ring groove 508.
In fig. 6: the middle of the lower end surface of the guide column 501 is provided with a guide groove 505 with a conical groove structure, the middle of the upper end surface of the limiting head 503 is provided with a guide cone 506 matched with the guide groove 505, and the structure is convenient for butt joint positioning between the limiting head 503 and the guide column 501.
In fig. 7: the buffer cavity 601 is axially arranged in the wall body of the buffer sleeve 6, the air guide holes 602 which are annularly and uniformly distributed are arranged on the outer wall of the buffer sleeve 6, the buffer cavity 601 is communicated with the air guide holes 602 through the connecting holes 603, when the lifting tension is large, the hoisting head 502 can be greatly stretched outwards at the end part of the embedded pipe 3, the limiting head 503 has a large pressure on the buffer sleeve 6 at the time, when the buffer sleeve 6 is subjected to the large pressure, the buffer cavity 601 is inwards compressed, the air in the buffer cavity 601 is rapidly discharged to the air guide holes 602 through the connecting holes 603, the gas discharged from the air guide holes 602 is stored in the cavity of the buffer cavity 301, when the pressure on the end surface of the buffer sleeve 6 is reduced, the buffer cavity 601 can automatically recover to the original state, and during the period, the buffer sleeve 6 plays a good buffering role relative to the telescopic head 5.
In fig. 4: the end cover 4 is composed of a cover plate 401 with a disc-shaped plate-shaped structure and a locking block 402 arranged at the lower end of the cover plate 401, the cover plate 401 is in threaded connection with the end cover mounting groove 303, the outer side of the locking block 402 is of a regular hexagonal structure, a groove body with a regular hexagonal structure is formed in the middle of the locking block 402, a good sealing protection effect is achieved on the cavity of the buffer cavity 301 after the cover plate 401 is in threaded connection with the end cover mounting groove 303, the inner side and the outer side of the locking block 402 are of a regular hexagonal structure, and the end cover 4 and the embedded pipe 3 are fixed together conveniently through a wrench.
The working principle is as follows: when the whole embedded hoisting piece is assembled, firstly, the guide post 501 penetrates through the guide hole 302 and is inserted into the buffer cavity 301, then the return spring 8, the pressure-bearing ring 7 and the buffer sleeve 6 are sequentially sleeved on the excircle of the guide post 501, the guide cone 506 on the upper end surface of the limiting head 503 is guided into the guide groove 505 on the lower end of the guide post 501, then the limiting head 503 and the guide post 501 are fastened together through the connecting bolt 504, the end cover 4 is guided into the groove body of the end cover mounting groove 303, the locking block 402 on the lower end of the cover plate 401 is pulled by a wrench to rotate and fix the cover plate 401 and the end cover mounting groove 303, when the hook 10 is mounted, a shaft hole is punched into the hook mounting groove 510 from the excircle of the hoisting head 502, the hook 10 is placed into the hook mounting groove 510, the mounting hole on the side surface of the hook 10 is coaxial with the shaft hole, then the hinge shaft 511 is inserted into the hook mounting groove 510 from the shaft hole and the hinge shaft 511 is matched with the mounting hole, when the pull ring 9 is installed, the two ends of the pull ring 9 are firstly unfolded, so that the inserting rods 901 are respectively inserted from the inserting holes 509 at the two ends of the pull ring groove 508, when the pull ring 9 is used, the pull ring 9 is pulled out from the pull ring groove 508, then the telescopic head 5 is taken out from the embedded pipe 3 by pulling the pull ring 9, and when the pull ring 9 is not used, the pull ring 9 is overturned into the groove body of the pull ring groove 508;
when the whole embedded hoisting piece is embedded in the prefabricated staircase, the hoisting head 502 at the upper end of the telescopic head 5 is required to retract to the top end of the embedded pipe 3, foam is filled in the hook mounting groove 510 and the hoisting hole 507, a layer of release film is wrapped on the outer side of the hoisting head 502 to prevent concrete from being attached to the outer wall of the hoisting head 502, then the whole embedded hoisting piece is embedded in the wall bodies at two sides of the prefabricated staircase, the embedded hoisting pieces at two sides of the prefabricated staircase are required to be coaxial during embedding, thus the embedding is beneficial to maintaining the stability of the prefabricated staircase during hoisting, after the embedded hoisting piece is embedded, and after the prefabricated staircase is prefabricated, the pull ring 9 is pulled out from the pull ring groove 508, then the pull ring 9 is pulled to pull the telescopic head 5 out from the end face of the embedded pipe 3 for a certain distance, and simultaneously the hoisting head 502 is pulled out of the embedded hole of the prefabricated staircase, at the moment, the release film outside of the, then, the hook mounting groove 510 and the foam filled in the hoisting hole 507 are pulled out, and after the pull ring 9 is loosened, the hoisting head 502 retracts to the top of the embedded pipe 3 under the restoring action of the return spring 8;
when in lifting, the pull ring 9 is firstly pulled out from the pull ring groove 508, the pull ring 9 is pulled by hand to drive the telescopic head 5 to pull the lifting head 502 out from the prefabricated holes at two sides of the prefabricated staircase for a certain distance, then the lifting rope is fixedly penetrated with the lifting hole 507 or fixedly sleeved with the pull ring at the side surface of the lifting hook 10, then the pull ring 9 is turned back into the pull ring groove 508 at the top of the lifting head 502, after the lifting and fixing of the four pre-embedded lifting pieces at two sides of the prefabricated staircase and at the steps at two ends of the prefabricated staircase bottom are completed, the lifting rope can be lifted, after the lifting and the lifting are completed, the lifting rope is taken down from the pre-embedded lifting pieces one by one, at the moment, the lifting head 502 retracts to the top of the pre-embedded pipe 3 under the elastic restoring force of the restoring spring 8, meanwhile, the lifting head 502 retracts into the pre-embedded holes, at the moment, the whole pre-, therefore, the further installation of the prefabricated staircase is not influenced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a pre-buried hoist and mount piece of prefabricated stair, includes flexible hoist and mount subassembly (2) that pre-buried subassembly (1) and pre-buried subassembly (1) middle cover were established, its characterized in that: the embedded component (1) is composed of a pre-embedded pipe (3) and an end cover (4) which is screwed with the lower end of the pre-embedded pipe (3), a buffer cavity (301) is arranged in the middle of the embedded pipe (3), a guide hole (302) is arranged from the upper end of the buffer cavity (301) to the top of the embedded pipe (3), the lower end of the buffer cavity (301) is provided with an end cover mounting groove (303), the telescopic hoisting assembly (2) is composed of a telescopic head (5), a buffer sleeve (6) sleeved on the excircle of the telescopic head (5), a bearing ring (7) and a reset spring (8), the middle of the telescopic head (5) is provided with a guide post (501), a hoisting head (502) is fixedly connected at the upper end of the guide post (501), a lifting hook (10) is hinged on the side surface of the hoisting head (502), the lower end of the guide column (501) is fixedly connected with a limiting head (503) through a connecting bolt (504);
anti-falling grooves I (304) which are axially and uniformly distributed and arranged are formed in the outer circle of the embedded pipe (3), and anti-falling grooves II (305) which are circumferentially and uniformly distributed and arranged are formed in the outer circle of the embedded pipe (3);
hoisting holes (507) are uniformly distributed and arranged in the middle of the hoisting head (502), lifting hook mounting grooves (510) with groove body structures are formed in the side faces of the hoisting holes (507) and the outer circle of the hoisting head (502), and hinged shafts (511) matched with lifting hooks (10) in a sleeved mode are fixedly inserted in the side faces of the lifting hook mounting grooves (510);
a pull ring groove (508) with a groove body structure is annularly formed in the top end of the hoisting head (502), a plug hole (509) is formed in the end portion of the pull ring groove (508), and a pull ring (9) which is in plug fit with the plug hole (509) is arranged in the pull ring groove (508);
the wall body inner ring of cushion collar (6) is to having seted up cushion chamber (601), and has seted up air guide hole (602) that the hoop equipartition was arranged on the outer wall of cushion collar (6), cushion chamber (601) are linked together through connecting hole (603) with air guide hole (602).
2. The pre-buried hoist and mount of prefabricated stair of claim 1, characterized in that: the pull ring (9) is of a circular ring structure, and the two ends of the pull ring (9) are fixedly connected with a plug-in rod (901) which is plugged with the plug-in hole (509).
3. The pre-buried hoist and mount of prefabricated stair of claim 1, characterized in that: the middle of the lower end face of the guide column (501) is provided with a guide groove (505) with a conical groove body structure, and the middle of the upper end face of the limiting head (503) is provided with a guide cone (506) which is matched with the guide groove (505) in a sleeved mode.
4. The pre-buried hoist and mount of prefabricated stair of claim 1, characterized in that: the end cover (4) is composed of a cover plate (401) with a disc-shaped plate-shaped structure and a locking block (402) arranged at the lower end of the cover plate (401), the cover plate (401) is in threaded connection with the end cover mounting groove (303), the outer side of the locking block (402) is of a regular hexagonal structure, and a groove body of the regular hexagonal structure is formed in the middle of the locking block (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766976.2A CN110510496B (en) | 2019-08-20 | 2019-08-20 | Pre-buried hoist and mount piece of prefabricated stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766976.2A CN110510496B (en) | 2019-08-20 | 2019-08-20 | Pre-buried hoist and mount piece of prefabricated stair |
Publications (2)
| Publication Number | Publication Date |
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| CN110510496A CN110510496A (en) | 2019-11-29 |
| CN110510496B true CN110510496B (en) | 2020-11-10 |
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| CN201910766976.2A Active CN110510496B (en) | 2019-08-20 | 2019-08-20 | Pre-buried hoist and mount piece of prefabricated stair |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730737A (en) * | 2020-07-10 | 2020-10-02 | 浙江瑞青新型建材有限公司 | Embedded part and concrete prefabricated part |
| CN115110706B (en) * | 2022-07-11 | 2023-09-29 | 中建八局第一建设有限公司 | Prefabricated combined stair and construction method thereof |
| CN116891182B (en) * | 2023-09-11 | 2023-12-05 | 贵州乌江水电开发有限责任公司 | Hydropower station wind shield mounting structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2377501A1 (en) * | 1977-01-12 | 1978-08-11 | Monfray Jean Yves | Anchorage for lifting gear on precast unit - has sprung pin received in socket with locking action by misalignment of projections and recesses |
| JPH09175773A (en) * | 1995-12-27 | 1997-07-08 | Fukoku Sekiyu Kk | Insert for side ditch block and lowering member |
| CN205907926U (en) * | 2016-08-24 | 2017-01-25 | 四川省建筑设计研究院 | Telescopic prefabricated staircase hoist and mount built -in fitting device |
| CN206466900U (en) * | 2017-02-20 | 2017-09-05 | 安徽江淮汽车集团股份有限公司 | Novel hoisting device |
| CN106965308A (en) * | 2017-05-21 | 2017-07-21 | 无锡市翱宇特新科技发展有限公司 | A kind of stripper apparatus of concrete section of jurisdiction built-in slip casting pipe |
| CN207812875U (en) * | 2018-01-25 | 2018-09-04 | 深圳机械院建筑设计有限公司 | Precast stair based on building industrialization |
| KR102105751B1 (en) * | 2018-02-01 | 2020-04-29 | 주식회사 대동에스앤티 | Anchor Bolt System |
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