CN112875542A - Quick hoisting device and method for main truss of tamping coke oven coal tower tamping machine - Google Patents
Quick hoisting device and method for main truss of tamping coke oven coal tower tamping machine Download PDFInfo
- Publication number
- CN112875542A CN112875542A CN202110284487.0A CN202110284487A CN112875542A CN 112875542 A CN112875542 A CN 112875542A CN 202110284487 A CN202110284487 A CN 202110284487A CN 112875542 A CN112875542 A CN 112875542A
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- China
- Prior art keywords
- hoisting
- main truss
- cantilever beam
- tamping
- coke oven
- Prior art date
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- 239000003245 coal Substances 0.000 title claims abstract description 44
- 239000000571 coke Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 40
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 238000003466 welding Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004939 coking Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
- B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a quick hoisting device and a method for a main truss of a tamping coke oven coal tower tamping machine, which comprises a cantilever beam plate and a special hoisting device arranged on the cantilever beam plate, wherein the cantilever beam plate is positioned at two sides of the tamping coke oven coal tower, the cantilever beam plate is provided with pre-buried hoisting holes, the special hoisting device comprises a hoisting frame, a chain block and a chain hoisting rope, the hoisting frame is arranged on the cantilever beam plate, the chain block is arranged on the hoisting frame, the chain hoisting rope vertically penetrates through the pre-buried hoisting holes, and the chain hoisting rope is fixedly arranged on the main truss. The main truss is lifted by using the automobile crane, the special hoisting device is installed on the upper portion of the reinforced concrete cantilever beam plate, and the main truss is continuously hoisted and installed, so that the installation difficulty is reduced, the installation period is shortened, and the installation efficiency is improved. The problem that each main truss automobile crane cannot be directly hoisted in place is solved, and the hoisting device is simple and light and flexible in installation and operation.
Description
Technical Field
The invention relates to the field of metallurgical coking engineering, in particular to a quick hoisting device and a method for a tamping machine main truss of a coal tower of a tamping coke oven.
Background
The tamping coke oven is a main coke oven in the coking engineering at present, and the main principle is that the coking coal is sent into a tamping coke oven coal tower, a coke oven tamping machine is arranged at the lower part of the tamping coke oven coal tower, the coal is mechanically tamped into coal cakes in the coke oven tamping machine, and then the coal cakes are pushed into a coking chamber of the coke oven for coking.
After the construction of the reinforced concrete structure of the main body of the tamping coke oven coal tower is completed, the support frame at the lower part of the tamping coke oven coal tower and the surrounding support frames around the coal tower need to be dismantled, and then the steel structure of the tamping machine of the tamping coke oven coal tower is installed. The steel structure of the tamping machine is arranged at the lower part of the reinforced concrete cantilever beam plate with the elevation of about +26m to +28m, the width of about 5m and the length of about 30m on the two side surfaces of the coal tower of the tamping coke oven. The steel structure of the tamping machine is firstly provided with a main truss of about 1.4 t. Because reinforced concrete cantilever beam slab hinders mobile crane direct hoist and mount main truss, mobile crane can not once hoist and mount the target in place, and the installation degree of difficulty is big, and the installation period is long, and the installation effectiveness is low. Therefore, a quick hoisting device and method for a main truss of a tamping coke oven coal tower tamping machine with high installation efficiency are urgently needed.
Disclosure of Invention
The invention aims to solve the technical problems and provides a device and a method for quickly hoisting a main truss of a tamping machine of a coal tower of a tamping coke oven.
The technical scheme adopted by the invention is as follows: the utility model provides a quick hoist device of tamping coke oven coal tower tamping machine main truss, is in including overhanging beam board and setting special hoist device on the overhanging beam board, overhanging beam board is located the both sides at the tamping coke oven coal tower, be provided with pre-buried hoist and mount hole on the overhanging beam board, special hoist and mount frame, chain block and chain lifting rope, the hoist and mount frame is installed on the overhanging beam board, chain block installs on the hoist and mount frame, the chain lifting rope passes perpendicularly pre-buried hoist and mount hole, the chain lifting rope installation is fixed on the main truss. The main truss is lifted by using the automobile crane, the special hoisting device is installed on the upper portion of the reinforced concrete cantilever beam plate, and the main truss is continuously hoisted and installed, so that the installation difficulty is reduced, the installation period is shortened, and the installation efficiency is improved. The special hoisting device is simple and light, and flexible in installation and operation.
Preferably, a detachable installation and operation hanging bracket is further installed below the cantilever beam plate, the installation and operation hanging bracket is used for walking and operation when a constructor installs a main truss, and the installation and operation hanging bracket is arranged along the length direction of the cantilever beam plate. The width of the operation hanging bracket is 1200mm, and the height is 1300mm-1500 mm. And dismantling the operation hanging bracket after all the main trusses are installed.
Preferably, the aperture of the embedded hoisting hole is phi 40-50mm, and the embedded hoisting hole is arranged at each main truss mounting position of the cantilever beam plate. The chain lifting rope channel of the special lifting device is solved, the accuracy of the lifting position of each roof truss is facilitated, and the in-place efficiency is improved.
Preferably, the lower part of the cantilever beam plate is provided with an embedded steel plate for installing an operation hanger, and the embedded steel plate is arranged on the left side and the right side of the embedded hoisting hole. The length, width and height of the steel sheet were 150 mm. times.150 mm. times.12 mm.
Preferably, the hoisting frame comprises a cross-shaped I-steel cross beam and stand columns arranged on the periphery of the cross-shaped I-steel cross beam, and the cross-shaped I-steel cross beam and the stand columns on the periphery of the cross-shaped I-steel cross beam are welded to form the hoisting frame. The cross I-steel beam uses 16I-steel, and the upright column uses DN80mm steel tube.
Preferably, the center of the cross I-steel beam, the chain block and the embedded hoisting holes are positioned on the same vertical straight line.
The quick hoisting method of the main truss of the tamping machine of the coal tower of the tamping coke oven is also provided, and the quick hoisting method is applied to the quick hoisting device, and comprises the following steps:
s1: arranging pre-buried hoisting holes at the positions of the main trusses arranged on the reinforced concrete cantilever beam plates on the two sides of the tamping coke oven coal tower;
s2: installing a hoisting frame at the position where the pre-embedded hoisting hole is formed in the upper part of the cantilever beam plate;
s3: a chain block is arranged on the hoisting frame, and a chain lifting rope vertically penetrates through the pre-buried hoisting hole;
s4: installing special operation hanging brackets at the lower parts of reinforced concrete cantilever beam plates on two sides of a tamping coke oven coal tower;
s5: hoisting each main truss of the tamping machine to the lower part of the reinforced concrete cantilever beam plate by 1.5-2m by using an automobile crane;
s6: fixing the chain lifting rope with the main truss, hoisting the main truss by a chain block until the main truss reaches the installation position, and fixing the main truss by the embedded bolt;
s7: the special dismounting hoisting device is mounted at the hoisting position of the next-roof-truss, and the next-roof-truss is hoisted;
s8: after the main truss of the tamping machine is completely installed, installing the rest steel structures of the tamping machine;
s9: blocking a pre-buried hoisting hole of the reinforced concrete cantilever beam plate by using micro-expansion fine stone concrete;
s10: and (4) removing the special operation hanging bracket.
Preferably, before the step S4, the method further includes pre-burying 2 steel plates of 150mm × 150mm × 12mm at a position where the special operation hanger is installed at the lower part of each cantilever beam.
Preferably, before the step S2, the method further includes welding cross-shaped i-steel beams by using i-steel, and then welding four steel pipe columns with the same height at four corners of the cross-shaped i-steel beams to form the hoisting frame.
Preferably, when the main truss is hoisted, the main truss is hoisted one by one according to the length direction of the cantilever beam plate.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: the invention discloses a quick hoisting device and a quick hoisting method for a main truss of a tamping coke oven coal tower tamping machine, which comprise a cantilever beam plate and a special hoisting device arranged on the cantilever beam plate, wherein the cantilever beam plate is positioned at two sides of the tamping coke oven coal tower, the cantilever beam plate is provided with pre-buried hoisting holes, the special hoisting device comprises a hoisting frame, a chain block and a chain hoisting rope, the hoisting frame is arranged on the cantilever beam plate, the chain block is arranged on the hoisting frame, the chain hoisting rope vertically penetrates through the pre-buried hoisting holes, and the chain hoisting rope is fixedly arranged on the main truss. The main truss is lifted by using the automobile crane, the special hoisting device is installed on the upper portion of the reinforced concrete cantilever beam plate, and the main truss is continuously hoisted and installed, so that the installation difficulty is reduced, the installation period is shortened, and the installation efficiency is improved. The special hoisting device is simple and light, and flexible in installation and operation.
Drawings
FIG. 1 is a schematic view of the main truss of the present invention after installation;
FIG. 2 is a schematic illustration of the cantilever beam construction of the present invention;
FIG. 3 is a schematic structural view of a special hoisting frame of the present invention;
FIG. 4 is a schematic view of the operating cradle of the present invention;
FIG. 5 is a schematic view of the operating cradle installation of the present invention;
FIG. 6 is a schematic view of the installation of the special lifting device of the present invention;
FIG. 7 is a first step diagram of the installation of the primary truss of the present invention;
FIG. 8 is a second step of the installation of the primary truss of the present invention;
FIG. 9 is a third step diagram of the installation of the primary truss of the present invention;
FIG. 10 is a schematic view of the installation of a second side primary truss of the present invention;
FIG. 11 is a flow chart of a method of the present invention.
Description of the symbols of the main elements: 1. a coal tower; 2. a cantilever beam plate; 3. a main truss; 4. a special hoisting device; 5. operating the hanger; 6. a truck crane; 21. embedding a hoisting hole; 22. pre-burying a steel plate; 41. a hoisting frame; 42. a chain block; 43. a chain lifting rope.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: referring to fig. 1 to 10, the quick lifting device for the main truss of the tamping coke oven coal tower tamping machine of the embodiment is characterized by comprising a cantilever beam plate 2 and a special lifting device 4 arranged on the cantilever beam plate 2, wherein the cantilever beam plate 2 is arranged on two sides of the tamping coke oven coal tower 1, the cantilever beam plate 2 is provided with pre-buried lifting holes 21, the special lifting device 4 comprises a lifting frame 41, a chain block 42 and a chain lifting rope 43, the lifting frame 41 is arranged on the cantilever beam plate 2, the chain block is arranged on the lifting frame 41, the chain lifting rope 43 vertically penetrates through the pre-buried lifting holes, and the chain lifting rope 43 is arranged and fixed on the main truss. The main truss 3 is lifted by using the automobile crane 6, the special hoisting device 4 is installed on the upper portion of the reinforced concrete cantilever beam plate 2, and the main truss 3 is continuously hoisted and installed, so that the installation difficulty is reduced, the installation period is shortened, and the installation efficiency is improved. The special hoisting device 4 is simple and light, and flexible in installation and operation.
Example 2: the detachable installation operation hanger 5 is further installed below the cantilever beam plate 2 in the embodiment, the installation operation hanger 5 is used for walking and operation when a constructor installs a main truss, and the installation operation hanger 5 is arranged along the length direction of the cantilever beam plate 2. The width of the operation hanger 5 is 1200mm, and the height thereof is 1300mm-1500 mm. The handling hanger 5 is removed after all the main girders 3 and their steel structures have been installed. The aperture of the pre-buried hoisting hole 21 of the embodiment is phi 40-50mm, and the pre-buried hoisting hole 21 is arranged at each main truss mounting position of the cantilever beam plate 2. The lifting rope channel of the chain lifting rope 43 of the special lifting device 4 is solved, the accuracy of the lifting position of each main truss 3 is facilitated, and the in-place efficiency is improved. The lower part of the cantilever beam plate 2 of the embodiment is provided with an embedded steel plate 22 for installing the operation hanger 5, and the embedded steel plate 22 is arranged at the left side and the right side of the embedded hoisting hole 21. The embedded steel plate 22 has a length, width and height of 150mm × 150mm × 12 mm. The hoisting frame 41 of the embodiment comprises a cross-shaped I-shaped steel cross beam and stand columns arranged on the periphery of the cross-shaped I-shaped steel cross beam, and the cross-shaped I-shaped steel cross beam and the stand columns on the periphery of the cross-shaped I-shaped steel cross beam are welded to form the hoisting frame 41. The cross I-steel beam uses 16I-steel, and the upright column uses DN80mm steel tube. The center of the hoisting frame 41, the chain block and the embedded hoisting hole 21 of the embodiment are positioned on the same vertical straight line.
Example 3: referring to fig. 1 to 11, the present embodiment further provides a method for quickly hoisting a main truss of a tamping machine of a coal tower of a tamping coke oven, which is applied to the quick hoisting device, and includes the following steps: s1: arranging pre-buried hoisting holes 21 at the positions of the main trusses 3 arranged on the reinforced concrete cantilever beam plates 2 at the two sides of the tamping coke oven coal tower 1; s2: a hoisting frame 41 is arranged at the position where the pre-buried hoisting hole 21 is formed in the upper part of the cantilever beam plate 2; s3: a manual hoist 42 is arranged on the hoisting frame 41, and a chain lifting rope 43 vertically penetrates through the embedded hoisting hole 21; s4: a special operation hanger 5 is arranged at the lower part of the reinforced concrete cantilever beam plate 2 at two sides of the tamping coke oven coal tower 1; s5: hoisting each main truss 3 of the tamping machine to the lower part of the reinforced concrete cantilever beam plate 2 by 1.5-2m by using an automobile crane 6; s6: fixing the chain lifting rope 43 with the main truss 3, hoisting the main truss 3 by a chain block until the main truss 3 reaches the installation position, and fixing the main truss 3 by the embedded bolt; s7: the special dismantling hoisting device 4 is installed at the hoisting position of the next installation main truss 3, and the next installation main truss 3 is hoisted; s8: after the main truss 3 of the tamping machine is completely installed, installing the rest steel structure of the tamping machine; s9: blocking the pre-buried hoisting holes 21 of the reinforced concrete cantilever beam plate by using micro-expansion fine stone concrete; s10: the special handling hanger 5 is removed.
Example 4: the method of the present embodiment further includes, before step S4, pre-burying 2 steel plates of 150mm × 150mm × 12mm at the position where the special operation hanger 5 is installed at the lower portion of each cantilever beam. In this embodiment, before the step S2, an i-beam is welded to form a cross i-beam, and then four steel pipe columns with the same height are welded to four corners of the cross i-beam to form the hoisting frame 41. When the main truss 3 is hoisted, the main truss is sequentially hoisted according to the length direction of the cantilever beam plate 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a quick hoist device of tamping coke oven coal tower tamping machine main truss, its characterized in that, be in including cantilever beam board and setting special hoist device on the cantilever beam board, the cantilever beam board is located the both sides of tamping coke oven coal tower, be provided with pre-buried hoist and mount hole on the cantilever beam board, special hoist and mount device includes hoist and mount frame, chain block and chain lifting rope, the hoist and mount frame is installed on the cantilever beam board, chain block installs on the hoist and mount frame, the chain lifting rope passes perpendicularly pre-buried hoist and mount hole, the chain lifting rope installation is fixed on the main truss.
2. The quick hoisting device for the main truss of the tamping coke oven coal tower tamping machine as claimed in claim 1, wherein a detachable mounting operation hanger is further installed below the cantilever beam plate, the mounting operation hanger is used for walking and operating when the main truss is installed, and the mounting operation hanger is arranged along the length direction of the cantilever beam plate.
3. The quick hoisting device of the main truss of the tamping coke oven coal tower tamping machine as claimed in claim 1, wherein the aperture of the pre-buried hoisting hole is phi 40-50mm, and the pre-buried hoisting hole is arranged at each main truss mounting position of the cantilever beam plate.
4. The quick hoisting device of the main truss of the tamping coke oven coal tower tamping machine as claimed in claim 1, wherein the lower part of the cantilever beam plate is provided with embedded steel plates for installing operation hangers, and the embedded steel plates are arranged at the left and right sides of the embedded hoisting holes.
5. The quick hoisting device of the main truss of the tamping coke oven coal tower tamping machine of claim 1, wherein the hoisting frame comprises a cross-shaped I-shaped steel beam and upright columns arranged around the cross-shaped I-shaped steel beam, and the hoisting frame is arranged on the upper part of the cantilever beam plate.
6. The quick hoisting device of the main truss of the tamping coke oven coal tower tamping machine of claim 5, wherein the center of the cross I-shaped steel beam of the hoisting frame, the chain block and the embedded hoisting holes are positioned on the same vertical plane on a straight line.
7. A quick hoisting method of a main truss of a tamping coke oven coal tower tamping machine is characterized in that the quick hoisting method is applied to the quick hoisting device of any one of claims 1 to 6, and comprises the following steps:
s1: arranging pre-buried hoisting holes at the positions of the main trusses arranged on the reinforced concrete cantilever beam plates on the two sides of the tamping coke oven coal tower;
s2: installing a hoisting frame at the position where the pre-embedded hoisting hole is formed in the upper part of the cantilever beam plate;
s3: a manual hoist is arranged on the hoisting frame, and a chain hoisting rope vertically penetrates through the embedded hoisting hole;
s4: installing special operation hanging brackets at the lower parts of reinforced concrete cantilever beam plates on two sides of a tamping coke oven coal tower;
s5: hoisting each main truss of the tamping machine to the lower part of the reinforced concrete cantilever beam plate by 1.5-2m by using an automobile crane;
s6: fixing the chain lifting rope with the main truss, hoisting the main truss by a chain block until the main truss reaches the installation position, and fixing the main truss by the embedded bolt;
s7: the special dismounting hoisting device is mounted at the hoisting position of the next-roof-truss, and the next-roof-truss is hoisted;
s8: after the main truss of the tamping machine is completely installed, installing the rest steel structures of the tamping machine;
s9: blocking a pre-buried hoisting hole of the reinforced concrete cantilever beam plate by using micro-expansion fine stone concrete;
s10: and (4) removing the special operation hanging bracket.
8. The method for quickly hoisting the main truss of the tamping coke oven coal tower tamping machine of claim 7, wherein before the step S4, the method further comprises the step of embedding 2 150mm by 12mm steel plates at the position of installing the special operation hanger at the lower part of each cantilever beam.
9. The method for quickly hoisting the main truss of the tamping coke oven coal tower tamping machine of claim 7, wherein before the step S2, the method further comprises the steps of welding cross-shaped I-steel beams by using I-steels, and then welding four steel pipe columns with the same height at four corners of the cross-shaped I-steel beams to manufacture and form a hoisting frame.
10. The method for quickly hoisting the main truss of the tamping coke oven coal tower tamping machine as claimed in claim 7, wherein the main truss is hoisted one by one according to the length direction of the cantilever beam plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284487.0A CN112875542A (en) | 2021-03-17 | 2021-03-17 | Quick hoisting device and method for main truss of tamping coke oven coal tower tamping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284487.0A CN112875542A (en) | 2021-03-17 | 2021-03-17 | Quick hoisting device and method for main truss of tamping coke oven coal tower tamping machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112875542A true CN112875542A (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110284487.0A Pending CN112875542A (en) | 2021-03-17 | 2021-03-17 | Quick hoisting device and method for main truss of tamping coke oven coal tower tamping machine |
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| CN (1) | CN112875542A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192707A (en) * | 2014-08-21 | 2014-12-10 | 中国二十二冶集团有限公司 | Special tool for horizontally flipping coke oven door |
| WO2017121315A1 (en) * | 2016-01-12 | 2017-07-20 | 广州机施建设集团有限公司 | Construction method for building truss and floor slab |
| CN108639966A (en) * | 2018-06-29 | 2018-10-12 | 中国能源建设集团山西电力建设有限公司 | Heat power plant boiler economizer hand installs mechanism in place and installation method |
| CN112479052A (en) * | 2020-11-25 | 2021-03-12 | 中国五冶集团有限公司 | High-altitude cantilever lifting beam hoisting mechanism |
| CN214456371U (en) * | 2021-03-17 | 2021-10-22 | 中国五冶集团有限公司 | Quick hoisting device of main truss of tamping machine of tamping coke oven coal tower |
-
2021
- 2021-03-17 CN CN202110284487.0A patent/CN112875542A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192707A (en) * | 2014-08-21 | 2014-12-10 | 中国二十二冶集团有限公司 | Special tool for horizontally flipping coke oven door |
| WO2017121315A1 (en) * | 2016-01-12 | 2017-07-20 | 广州机施建设集团有限公司 | Construction method for building truss and floor slab |
| CN108639966A (en) * | 2018-06-29 | 2018-10-12 | 中国能源建设集团山西电力建设有限公司 | Heat power plant boiler economizer hand installs mechanism in place and installation method |
| CN112479052A (en) * | 2020-11-25 | 2021-03-12 | 中国五冶集团有限公司 | High-altitude cantilever lifting beam hoisting mechanism |
| CN214456371U (en) * | 2021-03-17 | 2021-10-22 | 中国五冶集团有限公司 | Quick hoisting device of main truss of tamping machine of tamping coke oven coal tower |
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