CN110606435A - Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material - Google Patents
Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material Download PDFInfo
- Publication number
- CN110606435A CN110606435A CN201910986864.8A CN201910986864A CN110606435A CN 110606435 A CN110606435 A CN 110606435A CN 201910986864 A CN201910986864 A CN 201910986864A CN 110606435 A CN110606435 A CN 110606435A
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- steel
- seat plate
- floor
- main rod
- shaped steel
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- 239000000463 material Substances 0.000 title claims abstract description 48
- 239000000725 suspension Substances 0.000 title claims abstract description 38
- 239000002689 soil Substances 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 title claims description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 18
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/14—Trolleys or crabs, e.g. operating above runways adapted to operate on crane or bridge structure of particular configuration, e.g. on reinforced concrete girders of rectangular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/16—Devices specially adapted for limiting trolley or crane travel; Arrangements of buffer-stops
Abstract
The invention relates to a suspended electric elevator suitable for a topdown method soil taking opening to transfer materials, which comprises an upper suspension beam made of I-steel, a lower crane beam provided with a guide rail, a plurality of intermediate interconnection members welded between the upper suspension beam and the lower crane beam, and a movable electric lifting mechanism comprising an electric elevator, a pulley and a lifting hook. The upper suspension beam is arranged on floor slabs on two sides of the soil taking opening in a crossing mode, the lower crane beam is suspended below the suspension beam, the electric elevator is suspended on the lower crane beam and moves left and right in a limited guide rail interval, controlled execution is carried out, or materials on the floor are lifted and moved to the soil taking opening and then pass through and are placed downwards to the lower operation layer, or materials on the lower operation layer are lifted to the floor and then are placed on a target stacking position in a left and right shifting mode according to requirements, material transmission between floors is carried out conveniently, efficiently, quickly, safely and environmentally, and the problem that material transmission between floors is not suitable for lifting machinery in the current reverse building method is solved.
Description
Technical Field
The invention relates to the technical field of capital construction facilities, in particular to a suspended electric elevator which is suitable for being arranged on a soil taking opening of a reverse construction method and used for transferring materials between floors.
Background
The reverse construction method is a new foundation pit construction technology which is published in recent years and is suitable for the construction of underground multi-layer structures of high-rise buildings, and is characterized in that a floor system structure, beams, plates, columns and outer walls of a basement are used as foundation pit retaining and foundation construction supporting structures, and the construction of a covered and excavated closed basement structure is carried out from top to bottom under the support of a horizontal supporting system and a retaining system in a pit. Because the construction can be carried out simultaneously without mutual interference with the superstructure of the high-rise building, the construction method has the advantages of high efficiency, social resource saving, environmental protection, shortening of the construction period of the building and the like, and the application is increasingly popularized. The basement structure construction mainly comprises the steps of firstly, pouring a first floor on a clean foundation ground level, and arranging a first floor soil taking opening on the first floor; then, underground excavation of a first-layer floor space through the first-layer plate soil taking opening, pouring of a first-layer floor, and forming of a first-layer plate soil taking opening on the first-layer floor; then, underground two-layer space is dug through a first-layer plate soil taking opening, and an underground two-layer floor is poured; and performing construction as required, or continuing to dig the lower-layer space after arranging the soil taking opening, or taking the lower-layer space as the lowest-layer bottom plate of the underground building, and performing construction of basic facilities such as pile heads, elevator shafts and the like as required from bottom to top. During the construction, material transfer operations such as outward transportation of a large amount of excavated sandy soil, internal supply of construction materials, inter-transfer of materials among floors and the like need to be carried out in a narrow space defined by taking the soil taking port as a unique channel and the floor height, and the field operation difficulty is high. At present, although the reverse construction method shows a certain technical advantage and is gradually popularized, a plurality of new technical difficulties are yet to be explored and solved in the starting stage. Particularly, in the aspect of supporting facilities, at present, no lifting machine suitable for material transfer in a narrow space under the ground exists temporarily, so that the conventional ground construction is generally followed by using a conventional tower crane or truck crane for coping, and due to the large volume, smooth, unobstructed and rapid and safe material transfer operation between a positive and negative zero-layer site and a bottommost operation surface layer site is difficult to perform in a narrow space with limited soil taking opening size and limited layer height, so that the resource utilization rate is low, the material transfer efficiency is low, the field materials are seriously accumulated, the construction period is long, the construction cost is high, and potential safety hazards exist, so that the lifting machine is not ideal from the economic aspect. Therefore, lack of suitable material lifting machinery has become a big difficulty in popularization and application of the reverse construction method at present, so it is necessary to research and develop a novel lifting device for efficiently, quickly and safely transferring materials between floors in a special environment suitable for reverse construction method construction.
Disclosure of Invention
The invention aims to overcome the defect that a suitable lifting device is not available in the traditional reverse construction method, and provides a suspension type electric material lifting machine which can be directly arranged on a floor slab soil taking hole, is beneficial to rapid and safe transfer of materials between floors, is beneficial to on-site civilized construction management and ensures high-efficiency and high-quality construction.
The invention relates to a suspended electric elevator suitable for a topdown method soil taking opening to transfer materials, which comprises an upper suspended beam, a lower suspended beam, a plurality of middle interconnecting members and a movable electric lifting mechanism, wherein:
the upper suspension beam is made of hot rolled I-shaped steel with the length of 10-14 meters, and comprises a left placing section and a right placing section which are placed on floor slabs on two sides of the soil taking opening in a limiting mode, a middle suspension section which is suspended on the soil taking opening, and a supporting working surface which is formed by one side surface of the I-shaped steel;
the lower crane beam is made of hot rolled I-shaped steel with the length of 15-20 meters, and is provided with a guide rail filled with the front and rear grooves of the I-shaped steel and limit stops positioned at two near end parts of the guide rail;
the middle interconnecting member comprises an upper connecting member, a lower connecting member and a middle connecting bolt;
the upper connecting member comprises a flat-plate strip-shaped main rod piece A made of I-shaped steel, a rectangular assembly seat plate A which is made of steel plates, one end of the I-shaped steel of the main rod piece A is vertically welded in the middle of the upper surface of the rectangular assembly seat plate A, a plurality of bolt limiting extending holes are formed in the periphery of the rectangular assembly seat plate A, and a plurality of reinforcing triangular connecting plates A which are made of steel plates, welded between the front and back groove surfaces of the I-shaped steel of the main rod piece A and the upper surface of the assembly seat plate A respectively, and welded on the left and right side surfaces of the other end of the I-;
the lower connecting member comprises a flat-plate strip-shaped main rod piece B made of I-shaped steel, a rectangular assembly seat plate B made of a steel plate, a plurality of bolt installation screw holes arranged on the periphery of the rectangular assembly seat plate B and a plurality of reinforcing triangular connecting plates B, wherein the rectangular assembly seat plate B is vertically welded on the middle of the lower surface of the rectangular assembly seat plate B, one end of the I-shaped steel of the main rod piece B is arranged in the middle, and the I-shaped steel of the reinforcing triangular connecting plates B is welded between the front and back groove surfaces of the other end of the I-shaped steel of the main rod piece B and the lower surface of the interconnection assembly seat;
the bolt limiting and extending hole arranged on the assembling seat plate A in the upper connecting component is correspondingly assembled with the setting position and the size of the bolt mounting screw hole arranged on the assembling seat plate B in the lower connecting component;
the upper connecting member is fixedly welded on a lower side supporting working surface of the I-shaped steel middle suspension section of the upper suspension beam in a centered, grouped and uniformly distributed mode through flush end surfaces on the main rod piece A;
the lower connecting members are centrally grouped through the flush end surfaces on the main rod pieces B and are uniformly and fixedly welded on the upper side surface of the middle section of the I-shaped steel of the lower crane beam at intervals corresponding to the arrangement positions of the upper connecting members on the middle suspension section;
the upper connecting member and the lower connecting member 32 are mutually overlapped through an assembling seat plate A and an assembling seat plate B, are assembled and interconnected through an intermediate connecting bolt to form the intermediate interconnecting member, and an I-shaped steel crane beam is suspended and arranged below the I-shaped steel suspension beam to form a fixed suspension assembly which can be provided with a movable electric lifting mechanism 4 on the lower crane beam;
the movable electric lifting mechanism comprises an electric lifter, a movable pulley arranged above the electric lifter and a telescopic lifting hook arranged below the electric lifter;
in addition, the electric hoist is served by an electric crane which has the vertical transportation height of 3-5 meters and the power selected according to the field requirement;
when in work, the upper suspension beam is spanned and placed on the floor slabs at the left and right sides of the soil taking port, the plurality of middle interconnecting members are uniformly and fixedly welded between the upper suspension beam and the lower crane beam, the electric hoister is movably arranged in the front and rear grooves of the crane beam at the lower part through a movable pulley, and the material on the floor is controlled to be lifted and then carried to the upper part of the lower layer soil taking port, and then passes through the soil taking port downwards and is placed on the floor of the lower operation layer, or the materials on the floor of the lower operation floor are lifted and transported to the floor, and then the materials are shifted left and right as required and placed on the target accumulation position, so that the materials between the floors can be conveniently, efficiently, quickly, safely and environmentally transmitted without using the traditional ground lifting machine, and the problem that the materials between the floors constructed by the traditional reverse construction method are not suitable for the lifting machine in material transmission is solved.
The suspended electric elevator is suitable for the topdown method to transfer materials, can be reasonably developed and successfully fixed on the soil taking opening above the floor according to special environmental conditions and functional requirements of topdown method deep foundation pit construction, can be shifted left and right, can be conveniently lifted or lowered according to needs, can smoothly transfer materials from top to bottom or from bottom to top to the floor of the floor or the floor of the lower operation layer, is suitable for transferring materials among floors in a narrow space under the ground, realizes the aim of efficiently, safely and quickly transferring the materials among the floors in the topdown method construction environment, has simple, scientific and reasonable structure, strong working applicability and low cost, and solves the problem of lacking suitable material lifting machinery in the topdown method construction in the prior art, the method has the advantages of overcoming the defects of long material transfer line between floors, low efficiency, serious material overstock on site, long construction period, high construction cost, potential safety hazard and the like, is a great innovation in reverse construction method construction facilities, provides basic guarantee for popularization and application of reverse construction methods, and has strong practicability and valuable market application prospect.
Drawings
FIG. 1 is a schematic diagram of the basic structure of an embodiment of the present invention;
FIG. 2 is a schematic view of an upper link of an intermediate interconnecting member in an embodiment of the present invention;
FIG. 3 is a schematic view of a lower link of an intermediate interconnecting member in an embodiment of the present invention;
fig. 4 is a schematic diagram of the working state of the embodiment of the invention.
In the figure:
1. upper suspension beam 11, left and right rest sections 12, middle suspension section 13, supporting working face
2. Lower crane beam 21, guide rail 22, limit stop 3, intermediate interconnecting member
31. Upper connecting member 311, main rod member A312, bolt limit extension hole 313 and assembling seat plate A
314. Triangular connecting plate A32, lower connecting member 321, main rod member B322, bolt mounting screw hole
323. Assembling seat plate B324, triangular connecting plate B33 and middle connecting bolt
4. Movable electric lifting mechanism 41, electric lifter 42, movable pulley
43. Telescopic lifting hook
Detailed Description
The invention will be further described with reference to the figures and the exemplary embodiments.
In fig. 1, 2, 3 and 4, the suspended electric hoist for transferring material at a topdown-cut of the present invention comprises a main body including an upper suspension beam 1, a lower crane beam 2, a plurality of intermediate interconnecting members 3 and a movable electric hoist mechanism 4, wherein:
the upper suspension beam 1 is made of hot rolled I-shaped steel with the length of 10-14 meters, and comprises a left placing section 11 and a right placing section 11 which are placed on floor slabs on two sides of the soil taking opening in a limiting mode, a middle suspension section 12 which is suspended on the soil taking opening, and a supporting working surface 13 which is filled by one side face of the I-shaped steel;
the lower crane beam 2 is made of hot rolled I-shaped steel with the length of 15-20 meters, and is provided with a guide rail 21 which is formed by I-shaped steel front and rear grooves and limit stoppers 22 positioned at two near end parts of the guide rail 21;
the middle interconnecting component 3 comprises an upper connecting component 31, a lower connecting component 32 and a middle connecting bolt 33;
the upper connecting member 31 comprises a flat plate strip-shaped main rod piece A311 made of I-shaped steel, a rectangular assembly seat plate A313 which is made of steel plates, one end of the I-shaped steel of the main rod piece A311 is vertically welded in the middle of the upper surface of the rectangular assembly seat plate A313, a plurality of bolt limiting extending holes 312 are formed in the periphery of the rectangular assembly seat plate A313, and a plurality of reinforcing triangular connecting plates A314 which are made of steel plates, respectively welded between the front and back groove surfaces of one end of the I-shaped steel of the main rod piece A311 and the upper surface of the assembly seat plate A313, and welded on the left and right side surfaces of the other end of;
the lower connecting member 32 comprises a flat strip-shaped main rod member B321 made of I-steel, a rectangular assembly seat plate B323 made of steel plates, a plurality of bolt installation screw holes 322 arranged on the periphery of the rectangular assembly seat plate B323 and a plurality of reinforcing triangular connecting plates B324 made of steel plates, wherein the rectangular assembly seat plate B323 is vertically welded on the middle of the lower surface of the I-steel of the main rod member B321, one end of the I-steel of the main rod member B321 is arranged in the middle, and the reinforcing triangular connecting plates B324 are welded between the front and back groove surfaces of the other end of the I-steel of the main rod member B321 and the lower surface of the interconnection assembly seat plate B;
the bolt limit extension hole 312 arranged on the assembly seat plate A313 in the upper connecting member 31 is matched with the bolt installation screw hole 322 arranged on the assembly seat plate B323 in the lower connecting member 32 in the corresponding arrangement position and size;
the upper connecting member 31 is fixedly welded on the lower side supporting working surface 13 of the I-shaped steel middle suspension section 12 of the upper suspension beam 1 in a centered, grouped and uniformly distributed mode through the flush end surface on the main rod piece A311;
the lower connecting members 32 are centrally grouped through flush end surfaces on the main rod pieces B321, and are uniformly and fixedly welded on the upper side surface of the middle section of the I-shaped steel of the lower crane beam 2 at intervals corresponding to the arrangement positions of the upper connecting members 31 on the middle suspension section 12;
the upper connecting member 31 and the lower connecting member 32 are mutually overlapped through an assembly seat plate A313 and an assembly seat plate B323, are assembled and interconnected through an intermediate connecting bolt 33 to form the intermediate interconnecting member 3, and the I-steel crane beam 2 is suspended and arranged below the I-steel suspension beam 1 to form a fixed suspension assembly which can be provided with a movable electric lifting mechanism 4 on the lower crane beam 2;
the movable electric lifting mechanism 4 comprises an electric lifter 41, a movable pulley 42 arranged above the electric lifter 41 and a telescopic hook 43 arranged below the electric lifter 41;
in addition, the electric hoist 41 is an electric crane which has a vertical transportation height of 3-5 m and power selected according to the field requirement;
when in work, the upper suspension beam 1 is spanned and placed on the floor slabs at the left and right sides of the soil taking port, the plurality of middle interconnecting members 3 are uniformly distributed and fixedly welded between the upper suspension beam 1 and the lower crane beam 2, the electric hoister 41 is movably arranged in the front and rear grooves of the lower crane beam 2 through a movable pulley 42, and is shifted left and right in the guide rail 21 region limited by the limit stop 22, the materials on the floor are controlled to be lifted and then carried to the upper part of the lower layer soil-taking port, and then the materials pass through the soil-taking port downwards and are placed on the floor of the lower operation floor, or the materials on the floor of the lower operation floor are lifted and transported to the floor, and then the materials are shifted left and right as required and placed on the target accumulation position, so that the materials between the floors can be conveniently, efficiently, quickly, safely and environmentally transmitted without using the traditional ground lifting machine, and the problem that the materials between the floors constructed by the traditional reverse construction method are not suitable for the lifting machine in material transmission is solved.
Claims (2)
1. A suspended electric hoist adapted for topdown-the-way opening to transfer material, characterized in that the body comprises an upper suspension beam (1), a lower crane beam (2), several intermediate interconnecting members (3) and a movable electric hoisting mechanism (4), wherein:
the upper suspension beam (1) is made of hot rolled I-shaped steel with the length of 10-14 meters, and comprises a left and a right placing sections (11) which are placed on floor slabs on two sides of the soil taking opening in a limiting manner, a middle suspension section (12) which is suspended on the soil taking opening, and a supporting working surface (13) which is filled by one side surface of the I-shaped steel;
the lower crane beam (2) is made of hot rolled I-shaped steel with the length of 15-20 meters, and is provided with a guide rail (21) filled with a front groove and a rear groove of the I-shaped steel and limit stoppers (22) positioned at two near end parts of the guide rail (21);
the middle interconnecting component (3) comprises an upper connecting component (31), a lower connecting component (32) and a middle connecting bolt (33);
the upper connecting member (31) comprises a flat-plate-shaped main rod piece A (311) made of I-shaped steel, a rectangular assembly seat plate A (313) which is made of steel plates, provided with one end of the I-shaped steel of the main rod piece A (311) in the middle vertically welded on the upper surface, provided with a plurality of bolt limiting extending holes (312) on the periphery, and a plurality of reinforcing triangular connecting plates A (314) which are made of steel plates, welded between the front and back groove surfaces of one end of the I-shaped steel of the main rod piece A (311) and the upper surface of the assembly seat plate A (313) respectively, and welded on the left and right side surfaces of the other end of the I-shaped steel of the main rod piece A (311);
the lower connecting member (32) comprises a flat plate strip-shaped main rod piece B (321) made of I-steel, a rectangular assembly seat plate B (323) which is made of steel plates, wherein the middle part of the lower surface of the rectangular assembly seat plate B is vertically welded with one end of the I-steel of the main rod piece B (321), the periphery of the rectangular assembly seat plate B is provided with a plurality of bolt installation screw holes (322), and a plurality of I-steels which are made of steel plates and are respectively welded between the front and back groove surfaces of the other end of the I-steel of the main rod piece B (321) and the lower surface of the interconnected assembly seat plate B (323) and reinforced triangular connecting plates B (324) welded on the left and right side surfaces of the other end of the I;
the bolt limiting and extending hole (312) arranged on the assembling seat plate A (313) in the upper connecting member (31) is matched with the bolt mounting screw hole (322) arranged on the assembling seat plate B (323) in the lower connecting member (32) in the corresponding assembly position and size;
the upper connecting member (31) is fixedly welded on a lower side supporting working surface (13) of an I-steel middle suspension section (12) of the upper suspension beam (1) in a centered, grouped and uniformly distributed mode through flush end surfaces on a main rod piece A (311);
the lower connecting members (32) are centrally grouped through flush end faces on the main rod piece B (321) and are uniformly and fixedly welded on the upper side face of the middle section of the I-shaped steel of the lower crane beam (2) at intervals corresponding to the arrangement positions of the upper connecting members (31) on the middle suspension section (12);
the upper connecting member (31) and the lower connecting member (32) are mutually overlapped through an assembly seat plate A (313) and an assembly seat plate B (323), are assembled and interconnected through an intermediate connecting bolt ()33 to form the intermediate interconnecting member (3), and suspend the I-steel crane beam (2) below the I-steel suspension beam (1) to form a fixed suspension assembly which can be provided with a movable electric lifting mechanism (4) on the lower crane beam (2);
the movable electric lifting mechanism (4) comprises an electric lifting machine (41), a movable pulley (42) arranged above the electric lifting machine (41) and a telescopic hook (43) arranged below the electric lifting machine (41);
when the device works, the upper suspension beam (1) is spanned and placed on floors at the left and right sides of the soil taking opening, the plurality of middle interconnecting members (3) are uniformly and fixedly welded between the upper suspension beam (1) and the lower crane beam (2), the electric elevator (41) is movably arranged in front and rear grooves of the lower crane beam (2) through the movable pulley (42) and is shifted left and right in a guide rail (21) interval limited by the limit stop block (22), the electric elevator is controlled to lift materials on the floor and then transport the materials to the upper part of the soil taking opening at the lower layer, then the materials downwards pass through the soil taking opening and then are placed on the floor of the lower operation layer, or the materials on the floor of the lower operation layer are lifted upwards and transported into the floor and then are shifted left and right according to the requirement, the materials are placed on a target stacking position, and the purpose of conveniently, efficiently, quickly, safely and environmentally friendly floor material transmission can be carried out without the traditional ground lifting machinery, the problem that material transfer between floors constructed by the traditional reverse construction method is not suitable for lifting machinery is solved.
2. A suspended electric hoist adapted for topdown-construction-method earth-opening material transfer as claimed in claim 1, characterized in that the electric hoist (41) is implemented by an electric hoist with a vertical transport height of 3-5 m and power selected according to the requirements of the site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986864.8A CN110606435A (en) | 2019-10-17 | 2019-10-17 | Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910986864.8A CN110606435A (en) | 2019-10-17 | 2019-10-17 | Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110606435A true CN110606435A (en) | 2019-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910986864.8A Pending CN110606435A (en) | 2019-10-17 | 2019-10-17 | Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material |
Country Status (1)
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| CN (1) | CN110606435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288191A (en) * | 2022-08-05 | 2022-11-04 | 北京中铁建建筑科技有限公司 | Reverse construction method |
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| CN210763974U (en) * | 2019-10-17 | 2020-06-16 | 中铁建工集团有限公司 | Be suitable for reverse construction method to get soil mouthful and pass suspension type electric hoist for material |
| CN210855047U (en) * | 2019-10-17 | 2020-06-26 | 中铁建工集团有限公司 | Be suitable for transmission material between reverse construction method floor with small-size swing arm formula electric hoist |
| CN110606437A (en) * | 2019-10-22 | 2019-12-24 | 中铁建工集团有限公司 | Walking type small electric elevator suitable for transferring materials between floors by reverse construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115288191A (en) * | 2022-08-05 | 2022-11-04 | 北京中铁建建筑科技有限公司 | Reverse construction method |
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