CN114014159A - Barb hoisting method for arranging obstacle beam in hoisting channel - Google Patents
Barb hoisting method for arranging obstacle beam in hoisting channel Download PDFInfo
- Publication number
- CN114014159A CN114014159A CN202111311211.3A CN202111311211A CN114014159A CN 114014159 A CN114014159 A CN 114014159A CN 202111311211 A CN202111311211 A CN 202111311211A CN 114014159 A CN114014159 A CN 114014159A
- Authority
- CN
- China
- Prior art keywords
- lifting
- rope
- hoisting
- hook
- shaped clamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000004888 barrier function Effects 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- 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
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a barb hoisting method for arranging an obstacle beam in a hoisting channel, which solves the problem of how to finish barb operation when a temporary welding hook is forbidden to be additionally arranged on the obstacle beam. The aerial lifting hook is connected in a first hanging hole of the equilateral triangle-shaped hanging lug plate and is hung in a second hanging hole of the equilateral triangle-shaped hanging lug plate by a hoisting device, after the lifting hook hanging device is close to the barrier beam, the hanging hook is connected with a third hanging hole of the equilateral triangle-shaped hanging lug plate through a U-shaped clamp at the lower end of a hanging rope at the lower end of a rope sleeve hung on the barrier beam, the connection relation between the aerial lifting hook and the first hanging hole of the equilateral triangle-shaped hanging lug plate is released, after the lifting hook is lifted to cross the barrier beam, the connection between the aerial lifting hook and the first hanging hole of the equilateral triangle-shaped hanging lug plate is realized again by using the U-shaped clamp, the U-shaped clamp at the lower end of the hanging rope below two sleeves at the lower end of the rope sleeve hung on the barrier beam is released, and the connection relation between the hanging rope and the third hanging hole of the equilateral triangle-shaped hanging lug plate is released, and the crossing of the hanging device to the barrier beam is completed.
Description
Technical Field
The invention relates to a hoisting method, in particular to a barb hoisting method for a hoisting channel with an obstacle beam.
Background
In the process of hoisting equipment, sometimes, under the condition that an obstacle beam exists in a hoisting channel of the equipment, the hoisting equipment cannot pass through the obstacle beam and cannot be hoisted in place; when the situation is met, the hoisting construction party takes the following measures: firstly, welding lifting lugs are added on the barrier beam in advance, and the hoisting equipment is hung on the barrier beam to realize the primary barb of the hoisting equipment; the second step is to lift the vacated lifting hook to make it cross the obstacle beam; thirdly, equipment hung on the obstacle beam is barbed to a lifting hook crossing the obstacle beam, and finally the equipment is lifted to the equipment beam; but are often encountered in the field: the situation that the temporary hanging hook is forbidden to be added on the barrier beam is a difficult problem to be solved on site, and how to complete the barb operation on the barrier beam forbidden to be welded on the barrier beam.
Disclosure of Invention
The invention provides a barb hoisting method for arranging an obstacle beam in a hoisting channel, which solves the technical problem of how to finish barb operation when a temporary lifting hook is forbidden to be welded on the obstacle beam.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: manufacturing an equilateral triangle lug plate by using a steel plate with the thickness of 30 mm, and respectively processing a hanging hole at three top corners of the equilateral triangle lug plate; the rope sleeve is lapped on the barrier beam, and a lifting rope is connected between two sleeve openings at the lower end of the rope sleeve; the aerial hook is connected in the first hanging hole of the equilateral triangle ear plate, the equipment to be hoisted is hung in the second hanging hole of the equilateral triangle ear plate, after the equipment to be hoisted is close to the barrier beam, the hook is connected with the third hanging hole of the equilateral triangle ear plate through the U-shaped clamp at the lower end of the hanging rope at the lower end of the rope sleeve hung from the barrier beam, the barb of the equipment to be hoisted is hung on the barrier beam, the connection relation between the aerial hook and the first hanging hole of the equilateral triangle ear plate is released, after the hook is lifted to cross the barrier beam, the hook is lowered to the other side of the barrier beam, the U-shaped clamp is used for realizing the connection between the aerial hook and the first hanging hole of the equilateral triangle ear plate again, then, the U-shaped clamp at the lower ends of the hanging ropes below two sleeves at the lower end of the rope sleeve hung from the barrier beam is released, and the connection relation between the lower end of the hanging hole of the equilateral triangle ear plate is released, thereby completing the crossing of the obstacle beam by the hoisting equipment.
A barb hoisting method for arranging a barrier beam in a hoisting channel comprises a crane hook, the barrier beam in the hoisting channel, a hoisted equipment in-place beam and hoisted equipment, wherein the hoisted equipment can be hoisted and installed on the hoisted equipment in-place beam only after passing through the barrier beam in the hoisting channel, and the barb hoisting method is characterized by comprising the following steps of:
firstly, manufacturing an equilateral triangle lifting lug plate with the thickness of 30 millimeters, processing a first lifting hole on a first vertex angle of the equilateral triangle lifting lug plate, processing a second lifting hole on a second vertex angle of the equilateral triangle lifting lug plate, and processing a third lifting hole on a third vertex angle of the equilateral triangle lifting lug plate; acquiring a first U-shaped clamp, a second U-shaped clamp, a third U-shaped clamp and a rope sleeve;
secondly, connecting a lower lifting rope of the lifting hook to the lifting hook of the crane, connecting the lower end of the lower lifting rope of the lifting hook to a first lifting hole on the equilateral triangle lifting lug plate through a first U-shaped clamp, connecting the lifted equipment and the lifting rope of the equipment together, and connecting the upper end of the lifting rope of the equipment and a second lifting hole through a second U-shaped clamp; hoisting the hoisted equipment by a hoisting crane hook;
thirdly, overlapping a rope sling on the obstacle beam in the hoisting channel, connecting a rope sling lower lifting rope on two lower ends of the rope sling, and connecting a third U-shaped clamp on the lower end of the rope sling lower lifting rope; moving the crane hook to enable the third lifting hole on the equilateral triangle lifting lug plate to be abutted to the third U-shaped clamp;
fourthly, connecting a third U-shaped card in a third lifting hole on the equilateral triangle lifting lug plate, descending a crane lifting hook to ensure that the weight of the lifted equipment is borne by a lower lifting rope of the rope sleeve, separating the first U-shaped card from the first lifting hole after the lower lifting rope of the lifting hook is loosened to complete the first barb, and temporarily lifting the lifted equipment on an obstacle beam in the lifting channel;
fifthly, controlling the lifting of the crane hook to enable the crane hook, a lower lifting rope of the hook on the crane hook and the first U-shaped clamp to cross the obstacle beam in the lifting channel from the upper part of the obstacle beam in the lifting channel, then enabling the crane hook to descend, and enabling the first U-shaped clamp to be abutted to a first lifting hole on an equilateral triangle lug plate hung below the obstacle beam in the lifting channel;
sixthly, connecting the first U-shaped clamp with the first lifting hole, controlling a lifting hook of the crane to rise by a certain height to enable a lifting rope under a rope sleeve to be loosened, and separating the third U-shaped clamp from the third lifting hole to complete the second barb;
and seventhly, hoisting and mounting the hoisted equipment on the hoisting equipment positioning beam through the crane hook.
The invention creatively utilizes the combination of the rope sleeve lapped on the barrier beam and the three lifting holes on the triangular plate lifting lug to realize that the lifted equipment is firstly hooked and hung on the barrier beam, so that the lifted equipment is hooked on the lifting hook of the crane after the lifting hook crosses the barrier beam, thereby effectively solving the problem that the lifting lug cannot be welded on the barrier beam to cause the barb failure.
Drawings
FIG. 1 is a schematic illustration of the structure of the hoisted device 4 of the present invention after hoisting;
FIG. 2 is a schematic structural view of the present invention prior to first barb;
FIG. 3 is a schematic view of the first barb of the present invention;
FIG. 4 is a schematic structural view of the present invention prior to secondary barbs;
FIG. 5 is a schematic view of the second barb of the present invention;
FIG. 6 is a schematic view of the construction of an equilateral triangular ear plate 5 of the present invention;
fig. 7 is a view showing the engagement of the equilateral triangular ear plate 5 with the U-shaped card according to the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a barb hoisting method for arranging a barrier beam in a hoisting channel comprises a crane hook 1, the barrier beam 2 in the hoisting channel, a hoisted equipment in-place beam 3 and hoisted equipment 4, wherein the hoisted equipment 4 can be hoisted and installed on the hoisted equipment in-place beam 3 only after passing through the barrier beam 2 in the hoisting channel, and is characterized by comprising the following steps of:
firstly, manufacturing an equilateral triangle lug plate 5 with the thickness of 30 millimeters, processing a first lifting hole 8 on a first vertex angle of the equilateral triangle lug plate 5, processing a second lifting hole 9 on a second vertex angle of the equilateral triangle lug plate 5, and processing a third lifting hole 10 on a third vertex angle of the equilateral triangle lug plate 5; obtaining a first U-shaped clamp 11, a second U-shaped clamp 12, a third U-shaped clamp 14 and a rope sleeve 15;
secondly, connecting a lower lifting rope 6 of the lifting hook to the crane lifting hook 1, connecting the lower end of the lower lifting rope 6 of the lifting hook to a first lifting hole 8 on an equilateral triangle lifting lug plate 5 through a first U-shaped clamp 11, connecting the lifted equipment 4 and an equipment lifting rope 13 together, and connecting the upper end of the equipment lifting rope 13 and a second lifting hole 9 together through a second U-shaped clamp 12; hoisting the hoisted equipment 4 by the hoisting crane hook 1;
thirdly, overlapping a rope sling 15 on the obstacle beam 2 in the hoisting channel, connecting a rope sling lower hoisting rope 7 on two lower ends of the rope sling 15, and connecting a third U-shaped clamp 14 on the lower end of the rope sling lower hoisting rope 7; moving the crane hook 1 to make the third lifting hole 10 on the equilateral triangle lifting lug plate 5 abut against the third U-shaped clamp 14;
fourthly, connecting a third U-shaped clamp 14 to a third lifting hole 10 on the equilateral triangle lifting lug plate 5, descending the crane lifting hook 1 to ensure that the weight of the hung equipment 4 is borne by the rope sleeve lower lifting rope 7, separating the first U-shaped clamp 11 from the first lifting hole 8 after the lifting hook lower lifting rope 6 is loosened to complete the first barb, and temporarily hanging the hung equipment 4 on the obstacle beam 2 in the lifting channel;
fifthly, controlling the lifting of the crane hook 1 to enable the crane hook 1, a lower lifting rope 6 of the hook on the crane hook 1 and a first U-shaped clamp 11 to cross over the obstacle beam 2 in the lifting channel from the upper part of the obstacle beam 2 in the lifting channel, then enabling the crane hook 1 to descend, and enabling the first U-shaped clamp 11 to be abutted to a first lifting hole 8 on an equilateral triangle lug plate 5 hung below the obstacle beam 2 in the lifting channel;
sixthly, connecting the first U-shaped clamp 11 with the first lifting hole 8, then controlling the crane lifting hook 1 to rise by a certain height to enable the rope sleeve lower lifting rope 7 to be loosened, and separating the third U-shaped clamp 14 from the third lifting hole 10 to finish the second barb;
and seventhly, hoisting and mounting the hoisted equipment 4 on the hoisted equipment positioning beam 3 through the crane hook 1.
The equilateral triangle lifting lug plate 5 can be manufactured by cutting a steel plate into triangles, drilling holes at three vertex angles to serve as lifting holes, installing a U-shaped clamp ring in each lifting hole, and connecting the U-shaped clamp ring with equipment and a crane lifting hook through a rope loop; the rope sleeve 15 is a steel wire rope, two ends of the rope sleeve are provided with closed annular sleeves, and the U-shaped snap ring is connected with the closed annular sleeves through the two closed annular sleeves.
Claims (1)
1. A barb hoisting method for arranging a barrier beam in a hoisting channel comprises a crane hook (1), the barrier beam (2) in the hoisting channel, a hoisted equipment in-place beam (3) and hoisted equipment (4), wherein the hoisted equipment (4) can be hoisted and installed on the hoisted equipment in-place beam (3) only after passing through the barrier beam (2) in the hoisting channel, and is characterized by comprising the following steps of:
firstly, manufacturing an equilateral triangle lifting lug plate (5) with the thickness of 30 mm, processing a first lifting hole (8) on a first vertex angle of the equilateral triangle lifting lug plate (5), processing a second lifting hole (9) on a second vertex angle of the equilateral triangle lifting lug plate (5), and processing a third lifting hole (10) on a third vertex angle of the equilateral triangle lifting lug plate (5); obtaining a first U-shaped clamp (11), a second U-shaped clamp (12), a third U-shaped clamp (14) and a rope sleeve (15);
secondly, a lower lifting rope (6) of the lifting hook is connected to the crane lifting hook (1), the lower end of the lower lifting rope (6) of the lifting hook is connected to a first lifting hole (8) in the equilateral triangle lifting lug plate (5) through a first U-shaped clamp (11), the lifted equipment (4) is connected with an equipment lifting rope (13), and the upper end of the equipment lifting rope (13) is connected with a second lifting hole (9) through a second U-shaped clamp (12); hoisting the hoisted equipment (4) by the hoisting crane hook (1);
thirdly, overlapping a rope sling (15) on the obstacle beam (2) in the hoisting channel, connecting a rope sling lower hoisting rope (7) on the two lower ends of the rope sling (15), and connecting a third U-shaped clamp (14) on the lower end of the rope sling lower hoisting rope (7); moving the crane hook (1) to ensure that a third lifting hole (10) on the equilateral triangle lifting lug plate (5) is abutted against a third U-shaped clamp (14);
fourthly, connecting a third U-shaped clamp (14) to a third lifting hole (10) on the equilateral triangle lifting lug plate (5), descending a crane lifting hook (1) to enable the weight of the lifted equipment (4) to be borne by a rope sleeve lower lifting rope (7), releasing the first U-shaped clamp (11) from the first lifting hole (8) after the lifting hook lower lifting rope (6) is loosened, completing primary barb, and temporarily lifting the lifted equipment (4) on the obstacle beam (2) in the lifting channel;
fifthly, controlling the lifting of the crane hook (1), enabling the crane hook (1) and a lower hook lifting rope (6) and a first U-shaped clamp (11) on the crane hook to cross over the obstacle beam (2) in the lifting channel from the upper part of the obstacle beam (2) in the lifting channel, then enabling the crane hook (1) to descend, and enabling the first U-shaped clamp (11) to be abutted to a first lifting hole (8) of an equilateral triangle lug plate (5) hung below the obstacle beam (2) in the lifting channel;
sixthly, connecting the first U-shaped clamp (11) with the first lifting hole (8), then controlling the crane lifting hook (1) to rise to a certain height to enable the lower lifting rope (7) of the rope sleeve to be loosened, and separating the third U-shaped clamp (14) from the third lifting hole (10) to complete the second barb;
and seventhly, hoisting and mounting the hoisted equipment (4) on the hoisting equipment positioning beam (3) through the crane hook (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311211.3A CN114014159B (en) | 2021-11-08 | 2021-11-08 | Barb hoisting method with barrier beam in hoisting channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311211.3A CN114014159B (en) | 2021-11-08 | 2021-11-08 | Barb hoisting method with barrier beam in hoisting channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114014159A true CN114014159A (en) | 2022-02-08 |
| CN114014159B CN114014159B (en) | 2023-12-01 |
Family
ID=80061863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111311211.3A Active CN114014159B (en) | 2021-11-08 | 2021-11-08 | Barb hoisting method with barrier beam in hoisting channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114014159B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432866A (en) * | 2023-12-18 | 2024-01-23 | 山东胜越石化工程建设有限公司 | Application of hoisting transfer frame and hoisting pipe laying method in pipe gallery |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07157274A (en) * | 1993-12-08 | 1995-06-20 | Kajima Corp | Hanging jig for alc plate |
| JP2002364178A (en) * | 2001-06-08 | 2002-12-18 | Maeda Corp | Material lifting device |
| CN207632327U (en) * | 2017-11-17 | 2018-07-20 | 中国能源建设集团黑龙江省火电第一工程有限公司 | A kind of positioning translation formula suspension hook |
| CN109335949A (en) * | 2018-10-18 | 2019-02-15 | 中交二航局第二工程有限公司 | The method of scale beam type counter-jib suspender and its hoisting steel beam component |
| CN209009975U (en) * | 2018-08-03 | 2019-06-21 | 上海汉石昀升住宅工业发展有限公司 | A kind of self-balancing triangular hanging tool |
| CN110092285A (en) * | 2019-05-22 | 2019-08-06 | 北京首钢建设集团有限公司 | A kind of switching installation method of the strengthening steel crane girder part when not stopping production |
| CN210236851U (en) * | 2019-07-10 | 2020-04-03 | 中交一航局第一工程有限公司 | Large-scale king's block hoist of turning round |
| CN211198336U (en) * | 2019-09-06 | 2020-08-07 | 成都市排水有限责任公司 | Novel internal reflux pump hoisting device |
| CN111675110A (en) * | 2020-06-09 | 2020-09-18 | 何立 | Valve installation auxiliary device |
| CN111704020A (en) * | 2020-06-19 | 2020-09-25 | 五冶集团上海有限公司 | Equipment header hoisting method |
| CN214611183U (en) * | 2021-04-07 | 2021-11-05 | 中国水电四局（兰州）机械装备有限公司 | Special supplementary utensil of standing up of large-scale I-shaped girder steel |
-
2021
- 2021-11-08 CN CN202111311211.3A patent/CN114014159B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07157274A (en) * | 1993-12-08 | 1995-06-20 | Kajima Corp | Hanging jig for alc plate |
| JP2002364178A (en) * | 2001-06-08 | 2002-12-18 | Maeda Corp | Material lifting device |
| CN207632327U (en) * | 2017-11-17 | 2018-07-20 | 中国能源建设集团黑龙江省火电第一工程有限公司 | A kind of positioning translation formula suspension hook |
| CN209009975U (en) * | 2018-08-03 | 2019-06-21 | 上海汉石昀升住宅工业发展有限公司 | A kind of self-balancing triangular hanging tool |
| CN109335949A (en) * | 2018-10-18 | 2019-02-15 | 中交二航局第二工程有限公司 | The method of scale beam type counter-jib suspender and its hoisting steel beam component |
| CN110092285A (en) * | 2019-05-22 | 2019-08-06 | 北京首钢建设集团有限公司 | A kind of switching installation method of the strengthening steel crane girder part when not stopping production |
| CN210236851U (en) * | 2019-07-10 | 2020-04-03 | 中交一航局第一工程有限公司 | Large-scale king's block hoist of turning round |
| CN211198336U (en) * | 2019-09-06 | 2020-08-07 | 成都市排水有限责任公司 | Novel internal reflux pump hoisting device |
| CN111675110A (en) * | 2020-06-09 | 2020-09-18 | 何立 | Valve installation auxiliary device |
| CN111704020A (en) * | 2020-06-19 | 2020-09-25 | 五冶集团上海有限公司 | Equipment header hoisting method |
| CN214611183U (en) * | 2021-04-07 | 2021-11-05 | 中国水电四局（兰州）机械装备有限公司 | Special supplementary utensil of standing up of large-scale I-shaped girder steel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117432866A (en) * | 2023-12-18 | 2024-01-23 | 山东胜越石化工程建设有限公司 | Application of hoisting transfer frame and hoisting pipe laying method in pipe gallery |
| CN117432866B (en) * | 2023-12-18 | 2024-06-21 | 山东胜越石化工程建设有限公司 | Application of hoisting transfer frame and hoisting pipe laying method in pipe gallery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114014159B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101215356B1 (en) | Device for sling pile | |
| CN210193173U (en) | Large-scale H shaped steel stand hoist and mount hoist that breaks off relations fast | |
| CN105226560B (en) | A kind of crossing frame and its construction method | |
| CN114014159A (en) | Barb hoisting method for arranging obstacle beam in hoisting channel | |
| CN104895335A (en) | Method for mounting hanging pillar | |
| CN108118885B (en) | vertical moving type protection platform and application thereof in steel structure column butt joint construction | |
| CN113335475A (en) | Deck bottom fixed pulley sliding platform dismantling process | |
| US20020162283A1 (en) | Jacking & tipping restraint apparatus and design of communications towers to enable entire tower erection at ground level | |
| CN112252589A (en) | Steel reinforcement cage structure and installation method thereof | |
| CN102776874A (en) | Hoisting technique of long and thin structural single chip | |
| KR20130073117A (en) | Tower structure construction process | |
| JP5421805B2 (en) | Suspension and pile bracket | |
| JP2014020157A (en) | Erecting method of post | |
| CN210150591U (en) | Old sewage pipe suspension device | |
| CN108862002B (en) | Hoisting device and hoisting method for ultrathin steel plate shear wall in tower crane blind area | |
| JP2016023021A (en) | Column lifting tool and method of using the same | |
| CN109204702B (en) | Method for segmental assembling and lengthening tension tendon of tension leg platform | |
| CN209242560U (en) | A kind of boom hoisting | |
| CN108163713B (en) | Simple box-shaped component turning-over device and method | |
| CN112554082A (en) | Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge | |
| CN111042538A (en) | Hoisting and mounting method of buckling restrained brace | |
| CN213950348U (en) | H-shaped light purline quick hoisting plug-in type fixture device | |
| CN215439238U (en) | Combined hoisting frame for vertical shaft pipeline of high-rise building | |
| CN216810790U (en) | Well safety construction device for building structure | |
| CN218665026U (en) | Steel structure factory building roof tile hoisting combined steel carrying pole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |