CN116517017B - A steel bracket combined lifting platform - Google Patents
A steel bracket combined lifting platformInfo
- Publication number
- CN116517017B CN116517017B CN202310291587.5A CN202310291587A CN116517017B CN 116517017 B CN116517017 B CN 116517017B CN 202310291587 A CN202310291587 A CN 202310291587A CN 116517017 B CN116517017 B CN 116517017B
- Authority
- CN
- China
- Prior art keywords
- steel
- embedded
- main
- steel bracket
- back plate
- 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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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
-
- 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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Building Structures In Genera (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a steel bracket combined elevator steel platform which comprises a steel bracket and a basic steel beam frame, wherein the steel bracket comprises a back plate and two hinged plates which are arranged on the back plate in parallel, the back plate is fixed on a main structure through a bolt assembly, the bolt assembly comprises a pre-buried threaded column and a fixing bolt, an inner threaded hole is formed in the end of the pre-buried threaded column, a threaded strip is arranged on the outer side face of the pre-buried threaded column, the basic steel beam frame comprises a main steel beam, a spar and a cross beam, the cross beam is fixedly connected between the two main steel beams which are arranged in parallel, four spars are symmetrically arranged on the outer side edge of the main steel beam in a right-angle mode, the distance between the two spars on one side is matched with a standard section of an elevator, one end of the main steel beam is fixed with the steel bracket, and the other end of the main steel beam is provided with supporting force by a supporting plate which is pre-buried on the pillar. According to the steel bracket combined elevator steel platform, the turnover bracket artificial stress node is adopted for replacement, so that the construction cost is greatly reduced, and the construction efficiency is improved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a steel bracket combined elevator steel platform.
Background
In the present house construction engineering construction process, most municipal land is unoccupied, so that the construction site construction land area is narrow, the construction lifter is used as important vertical transportation equipment, and in the lifting process, the construction lifter can not land on a stable foundation or structure frequently, and is difficult to install under the working condition that soil materials are not filled in a fertilizer tank and the like. In order to ensure that the construction elevator obtains a stable foundation, a pile foundation is generally adopted to penetrate into a bearing layer to support the elevator, but the construction method is labor-consuming and time-consuming, the generated construction cost is huge, and a great amount of construction cost is wasted.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the steel bracket combined elevator steel platform, which takes a foundation pit crown beam or a basement roof as a bearing point for simply supporting stress, and replaces the steel bracket artificial stress node which can be turned over, so that the construction cost is greatly reduced, and the construction efficiency is improved.
The invention is realized by the following technical scheme:
The steel bracket combined elevator steel platform comprises a steel bracket and a basic steel beam frame, wherein the steel bracket comprises a back plate and two hinged plates which are arranged on the back plate in parallel, fixing holes are formed in two sides of the back plate, and positioning holes are formed in the hinged plates; the backboard is fixed on the main body structure through a bolt component; the bolt component comprises a pre-buried threaded column and a fixing bolt; the steel bracket platform comprises a steel bracket, a base steel beam frame, a fixing bolt, a steel bracket, a fixing bolt, a supporting plate, a bolt assembly, a screw structure, a screw bolt assembly, a steel bracket 1 and a steel bracket, wherein the fixing bolt is matched with the inner threaded hole in the outer side face of the steel bracket, the base steel beam frame comprises a main steel beam, a spar and a cross beam, the cross beam is fixedly connected between two main steel beams which are arranged in parallel, four spars are symmetrically arranged on the outer side face of the main steel beam in a right angle, the space between the two spars on one side is matched with an elevator standard section, one end of the main steel beam is clamped between hinged plates, the fixing bolt is fixed with the steel bracket through the fixing bolt, the other end of the steel bracket is provided with supporting force by the supporting plate which is embedded on a pier, the steel bracket 1 is fixed in a main body structure through the bolt assembly, the embedded threaded post in the screw bolt assembly is embedded in concrete through the screw structure arranged on the outer side face of the end, the steel bracket can be screwed out in the later period, multiple turnover use is realized, processing materials are saved, meanwhile, the inner threaded holes at the other end of the embedded threaded post are matched with the fixing bolt, the fixing bolt is fixed on the embedded threaded post in advance, the embedded post, the embedded screw bolt is not firmly, the connection is fixed on the steel bracket through the fixing bolt, the fixing structure is in the structure, the structure is not fixed in the structure, and the structure by the fixing and the structure, and the structure is also is not easy to be mounted on the bearing and the steel bracket by the laser, and the bearing position is well, the self weight and upper load of the construction hoist are transferred to the lower foundation steel beam frame through the standard joint, the foundation steel beam frame resists punching, the stress is clear, and the calculation is simple.
Preferably, the main steel beam, the spar and the cross beam are detachably connected by bolts, so that the main steel beam can be conveniently detached and turned over in later period, and pollution caused by welding can be avoided as much as possible.
The main steel beam, the spar and the cross beam are connected and fixed through the connecting plates, connecting rib plates are fixed at the connecting positions of the main steel beam, the spar and the cross beam, a plurality of rows of first elliptical holes are arranged at the connecting parts of the connecting rib plates, the spar and the cross beam in the vertical direction, long shaft sides of two adjacent rows of first elliptical holes are mutually perpendicular, second elliptical holes are arranged on the connecting plates, long shaft sides of the first elliptical holes and the second elliptical holes which are connected through the same bolt in a penetrating manner are mutually perpendicular, and in order to ensure the overall stability of the bolt connection, the elliptical holes can be cut on the connecting rib plates and the connecting plates by adopting high-precision cutting equipment, and the long shafts of the two adjacent rows of elliptical holes are mutually perpendicular, so that the looseness of the bolt connection can be reduced.
The steel bracket is characterized in that a reinforcing rib plate is arranged between the hinge plates, a triangular support plate is welded between the reinforcing rib plate and the back plate, the steel bracket is used for improving the structural strength of the steel bracket, and the reinforcing rib plate is transversely arranged to assist in supporting the main beam, so that the bearing load of the connecting pin shaft is reduced.
The embedded thread column is of a conical structure, the inner threaded hole is formed in the large end portion of the embedded thread column, the thread strip is formed in the small end portion of the embedded thread column, the embedded thread column can be conveniently detached and used in a turnover mode in the later period, an inner hexagonal hole can be formed in a port of the large end portion, and therefore the embedded thread column can be conveniently screwed by using an inner hexagonal plate shape and is separated from a main body structure.
The embedded threaded column is arranged on the steel bracket, a gasket is arranged between the embedded threaded column and the backboard, the gasket can indirectly increase the contact area between the locking parts, the connection strength of the connection parts is improved, the bearing capacity is further improved, the thickness of the gasket can be adjusted according to the field requirement, the supporting capacity of the concrete of the main structure on the whole steel bracket can also be improved, the bearing load of the embedded threaded column is lightened, and when the steel bracket is installed, the gasket, the fixing screw rod and the embedded threaded column are in threaded locking to clamp the bracket plate, and then the whole steel bracket is fixed on the main structure through the embedded threaded column.
The gasket is in an I-shaped structure, after being fixed with the steel corbel, the stress area of the steel corbel embedded in concrete can be increased in the left-right horizontal direction, the stress structure is changed, and the bearing capacity of the steel corbel in the left-right horizontal direction is effectively improved.
The backing plate is fixed on the back plate in a welding mode, and is not integrally machined with the back plate, so that the manufacturing cost can be reduced.
Preferably, the main steel beam, the spar and the cross beam are all made of I-steel, the flange of the I-steel is wide, and the rigidity of the side edge of the I-steel is high. It is particularly resistant to bending and is less likely to bend at the rear. Besides, the outer surfaces of the flanges are parallel to each other, so that the subsequent supporting process is more convenient, and the operation difficulty is reduced.
Preferably, the upper surface of the spar is provided with a rubber gasket, and the rubber gasket is in a disc-shaped structure and is fixed on the spar, so that the impact force of the elevator on the platform when falling down can be effectively reduced, and the service life of the platform is prolonged.
The construction method has the advantages that 1, under the working condition that soil backfill is not completed in a fertilizer tank and the like, the platform can take a foundation pit crown beam or a basement roof as a bearing point for simply supporting stress, the construction cost is greatly reduced, the construction efficiency is improved by adopting a turnover steel bracket artificial stress node for replacement, 2, the steel bracket in the platform is fixed in a main body structure through a bolt assembly, an embedded threaded column in the bolt assembly is embedded in concrete through a spiral structure arranged on the outer side surface of an end part, the embedded threaded column can be screwed out in the later stage, multiple turnover use is realized, processing materials are saved, and 3, the self weight of a construction lifter and the upper load are transmitted to a lower basic steel beam frame through a standard joint, and the basic steel beam frame resists punching stress, is clear and is simple to calculate.
Drawings
FIG. 1 is a schematic view of a steel platform of a steel corbel combined elevator according to the first embodiment;
FIG. 2 is a schematic view of a basic steel beam frame according to the first embodiment;
FIG. 3 is a schematic view of the steel corbel according to the first embodiment;
FIG. 4 is a schematic view of a mounting structure of the connecting rib according to the first embodiment;
FIG. 5 is a schematic view of the structure of the spar end portions according to the first embodiment;
FIG. 6 is a schematic view of the structure of the beam end in accordance with the first embodiment;
FIG. 7 is a schematic structural view of the connecting plate according to the first embodiment;
FIG. 8 is a schematic view of a mounting structure of a main steel beam and a spar according to the first embodiment;
FIG. 9 is a schematic view of a pre-buried threaded column according to the first embodiment;
FIG. 10 is a schematic view of a gasket according to the first embodiment;
1, a steel bracket, 11, a back plate, 12, a hinged plate, 13, a fixing hole, 14, a locating hole, 15, a pre-buried threaded column, 151, an internal threaded hole, 152, a threaded strip, 153, a hexagonal opening, 16, a fixing bolt, 17, a reinforcing rib plate, 18, a triangular support plate, 19, a backing plate, 2, a basic steel beam frame, 21, a main steel beam, 22, a spar, 23, a cross beam, 24, a connecting rib plate, 25, a first elliptical hole, 3, a support plate, 4, a pillar pier, 5, a connecting plate, 51, a second elliptical hole, 6, a gasket, 7, a rubber gasket, 8 and a main body structure.
Detailed Description
The following description of the embodiments of the present invention will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Example 1
As shown in fig. 1-10, a steel bracket combined elevator steel platform comprises a steel bracket 1 and a basic steel beam frame 2, wherein the steel bracket 1 comprises a back plate 11 and two hinge plates 12 arranged on the back plate 11 in parallel, two sides of the back plate 11 are provided with fixing holes 13, and the hinge plates 12 are provided with positioning holes 14; the back plate 11 is fixed on a main body structure 8 through a bolt assembly, the bolt assembly comprises an embedded threaded column 15 and a fixing bolt 16, an inner threaded hole 151 is formed in the end portion of the embedded threaded column 15, a threaded strip 152 is arranged on the outer side face of the embedded threaded column, the fixing bolt 16 is matched with the inner threaded hole 151, the foundation steel beam frame 2 comprises a main steel beam 21, a spar 22 and a cross beam 23, the cross beam 23 is fixedly connected between the two parallel main steel beams 21, four spar 22 are symmetrically arranged on the outer side edges of the main steel beam 21 in a right angle mode, the main steel beam 21, the spar 22 and the cross beam 23 are made of I-shaped steel, the length of the cross beam 23 is 350mm, the length of the spar 22 is 700mm and is identical to the model of the main steel beam 21, the space between the two spar 22 on one side face is matched with an elevator standard joint, one end of the main steel beam 21 is clamped between the two steel beams 12, the two end portions are fixed with the steel corbels 1 through positioning pins, the other end portions are provided with supporting force by a supporting plate 3 embedded on the column pier 4, in the bracket platform, the steel corbels 1 is screwed on the main body through the main body, the screw structure is screwed into the screw threaded column 15 through the outer side face of the screw assembly, the embedded threaded column 15 is screwed out, the embedded threaded column 15 is screwed into the screw structure for multiple times, the embedded threaded hole is formed at the other end portions, the screw 15 is screwed out, the screw threaded hole is screwed out, the screw-shaped and the embedded threaded bolt is screwed into the screw threaded bolt 15 is screwed into the end of the embedded threaded column 15 is screwed down, the screw is screwed down, the steel bracket 1 is fixed on the pre-buried threaded column 15 in advance through the fixing bolt 16, the connecting and fixing mode is simple in structure, firm in fixing, beneficial to correcting the position of the pre-buried threaded column 15 through laser measuring equipment before concrete pouring or in initial setting time so as to ensure the installation levelness of the foundation steel beam frame 2, in terms of bearing, the self weight of the construction lifter and the upper load are transmitted to the foundation steel beam frame 2 at the lower part through standard joints, the foundation steel beam frame 2 resists punching, the stress is definite, the calculation is simple, and particularly, the flatness of the foundation steel beam frame 2 is in the range of 4/1000 in the construction process.
Preferably, the main steel beam 21, the spar 22 and the cross beam 23 are detachably connected through the connecting plate 5 by bolts, a connecting rib plate 24 is fixed at the joint of the main steel beam 21, the spar 22 and the cross beam 23, the connecting rib plate is welded between the web plate and the flange of the main steel beam 21 at right angles, a plurality of rows of first elliptical holes 25 are arranged at the joint of the connecting rib plate 24, the spar 22 and the cross beam 23 in the vertical direction, and the long axis sides of two adjacent rows of first elliptical holes 25 are mutually perpendicular; the connecting plate 5 is provided with a second elliptical hole 51, long axis sides of the first elliptical hole 25 and the second elliptical hole 51 which are connected through by the same bolt are mutually perpendicular to reduce the looseness of the bolt connection, in order to ensure the overall stability of the connection of the main steel beam 21, the spar 22 and the cross beam 23, the first elliptical hole 25 and the second elliptical hole 51 can be cut by adopting high-precision cutting equipment, specifically, the long axis sides of the first elliptical hole 25 and the second elliptical hole 51 are 27mm, the short axis sides are 26mm, a reinforcing rib plate 17 is arranged between the hinged plates 12, a triangular support plate 18 is welded between the reinforcing rib plate 17 and the back plate 11 to improve the structural strength of the steel bracket, and the reinforcing rib plate 17 is transversely arranged to assist in supporting the main steel beam 21, so as to reduce the bearing load of the connecting pin shaft, the embedded threaded column 15 is in a conical structure, the internal threaded hole 151 is arranged at the large end part of the embedded threaded column, the port of the large end part can be provided with an internal hexagonal port 153 so as to facilitate the use of the internal hexagonal plate-shaped threaded column to screw the embedded threaded column, the embedded threaded column is separated from the main body structure, the joint area between the back plate 15 and the back plate 11 can be increased, the joint area between the embedded threaded column and the back plate 11 can be increased, the thickness of the bearing capacity is improved, the bearing capacity of the concrete of the main body structure on the whole steel bracket 1 can be improved according to the field requirement, the bearing capacity of the embedded threaded column 15 can be reduced, specifically, the gasket 6 is of an I-shaped structure, after the gasket 6 of the I-shaped structure is fixed with the steel bracket 1, the bearing area of the steel bracket 1 embedded in the concrete can be increased in the left-right horizontal direction, the bearing capacity of the steel bracket 1 in the left-right horizontal direction can be effectively improved by changing the bearing structure, the bottom of the back plate 11 is welded with the backing plate 19, the supporting capacity of the steel bracket 1 in the vertical direction can be improved by adjusting the verticality of the steel bracket on the one hand, the contact area of the bottom of the back plate 11 can be increased on the other hand, the bearing capacity of the steel bracket 1 in the vertical direction can be further improved, the backing plate 19 is fixed on the back plate 11 in a welding mode, the manufacturing cost can be reduced by not adopting the design of integrated processing, the upper surface of the spar 22 is provided with the rubber gasket 7, the disk-shaped structure is fixed on the back plate, the service life of the platform can be effectively slowed down when the platform is lowered, and the platform is used.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not deviate from the essence of the corresponding technical solution from the technical solution of the embodiment of the present invention.
Claims (8)
1. A steel bracket combined elevator steel platform is characterized by comprising a steel bracket and a basic steel beam frame, wherein the steel bracket comprises a back plate and two hinged plates which are arranged on the back plate in parallel, fixing holes are formed in two sides of the back plate, positioning holes are formed in the hinged plates, the back plate is fixed on a main structure through a bolt assembly, the bolt assembly comprises a pre-embedded threaded column and a fixing bolt, an inner threaded hole is formed in the end portion of the pre-embedded threaded column, a threaded strip is arranged on the outer side face of the pre-embedded threaded column, the fixing bolt is matched with the inner threaded hole, the basic steel beam frame comprises a main steel beam, a spar and a cross beam, the cross beam is fixedly connected between two main steel beams which are arranged in parallel, four spars are symmetrically arranged on the outer side edge of the main steel beam in a right angle mode, the distance between two spars on one side is matched with a standard elevator joint, one end of the main steel beam is clamped between the hinged plates, the main steel beam is fixed with the steel bracket through a positioning pin shaft, the other end of the main steel beam is provided with a supporting plate on the pre-embedded column, the pre-embedded threaded column is detachably connected with the pre-embedded column through bolts, the pre-embedded column is arranged at the end portion of the pre-embedded column, the embedded column is in a conical threaded structure, and the embedded column is arranged at the end portion of the embedded column is provided with the threaded hole.
2. The steel bracket combined elevator steel platform of claim 1, wherein the main steel beam is fixedly connected with the spar and the cross beam through connecting plates, connecting rib plates are fixedly arranged at the joints of the main steel beam, the spar and the cross beam, a plurality of rows of first elliptical holes are formed in the connecting parts of the connecting rib plates, the spar and the cross beam in the vertical direction, long axis sides of two adjacent rows of first elliptical holes are perpendicular to each other, a second elliptical hole is formed in the connecting plates, and long axis sides of the first elliptical holes and the second elliptical holes which are connected through the same bolt are perpendicular to each other.
3. The steel bracket assembly elevator steel platform of claim 1, wherein reinforcing ribs are arranged between the hinged plates, and triangular support plates are welded between the reinforcing ribs and the back plate.
4. The steel bracket combined elevator steel platform of claim 1, wherein a gasket is arranged between the embedded threaded column and the backboard.
5. The steel bracket assembly elevator steel platform of claim 4, wherein said spacer has an "I" shaped configuration.
6. A steel corbel combination elevator steel platform as defined in claim 1 wherein a backing plate is secured to the bottom of the back plate.
7. The steel bracket combined elevator steel platform of claim 1, wherein the main steel beam, the spar and the cross beam are all made of I-steel.
8. The steel bracket combined elevator steel platform of claim 1, wherein a rubber gasket is arranged on the upper surface of the spar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310291587.5A CN116517017B (en) | 2023-03-21 | 2023-03-21 | A steel bracket combined lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310291587.5A CN116517017B (en) | 2023-03-21 | 2023-03-21 | A steel bracket combined lifting platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116517017A CN116517017A (en) | 2023-08-01 |
| CN116517017B true CN116517017B (en) | 2026-04-10 |
Family
ID=87392972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310291587.5A Active CN116517017B (en) | 2023-03-21 | 2023-03-21 | A steel bracket combined lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116517017B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205500628U (en) * | 2016-03-25 | 2016-08-24 | 河南兴源建筑机械租赁有限公司 | Climb in tower crane and install conversion equipment who climbs between roof beam and bracket |
| CN109797961A (en) * | 2019-01-30 | 2019-05-24 | 中建四局第六建筑工程有限公司 | A kind of lifting platform system can have enough to meet the need measure girder steel bracket |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011120094A1 (en) * | 2011-12-02 | 2013-06-06 | Noe-Schaltechnik Georg Meyer-Keller Gmbh + Co. Kg | Method for closing blind holes remaining in concrete after screwing out of reusable screw anchors in tunnel construction for rail or road vehicles, involves placing and screwing closure element into secondary wall section of blind hole |
| CN214363595U (en) * | 2021-01-08 | 2021-10-08 | 中国新兴建筑工程有限责任公司 | Construction elevator foundation |
-
2023
- 2023-03-21 CN CN202310291587.5A patent/CN116517017B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205500628U (en) * | 2016-03-25 | 2016-08-24 | 河南兴源建筑机械租赁有限公司 | Climb in tower crane and install conversion equipment who climbs between roof beam and bracket |
| CN109797961A (en) * | 2019-01-30 | 2019-05-24 | 中建四局第六建筑工程有限公司 | A kind of lifting platform system can have enough to meet the need measure girder steel bracket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116517017A (en) | 2023-08-01 |
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