CN110902573A - Off-line installation method of cast metallurgy four-beam bridge crane - Google Patents
Off-line installation method of cast metallurgy four-beam bridge crane Download PDFInfo
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- CN110902573A CN110902573A CN201911059742.0A CN201911059742A CN110902573A CN 110902573 A CN110902573 A CN 110902573A CN 201911059742 A CN201911059742 A CN 201911059742A CN 110902573 A CN110902573 A CN 110902573A
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- hoisting
- main beam
- trolley
- hoisted
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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
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
-
- 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
Abstract
The invention relates to an off-line installation method of a cast-metallurgy four-beam bridge crane, which comprises the following steps: construction preparation; step two, mounting a heavy cast metallurgy four-beam bridge type 480t/80t crane; 2.1 hoisting the main beam of the cab; 2.2 hoisting the inner main beam; 2.3 hoisting the main beam of the electric room; 2.4 hoisting the auxiliary trolley; 2.5 hoisting the lower trolley of the main trolley; 2.6 hoisting the upper frame of the main trolley; the invention improves the installation efficiency, reduces the hoisting steps, is simple to implement and reduces the construction cost.
Description
Technical Field
The invention relates to an off-line installation method of a cast-metallurgy four-beam bridge crane.
Background
The heavy cast metallurgy four-beam bridge type 480t/80t crane is mainly used in steel-making engineering, mainly aims at hoisting molten steel in a converter shell, has the characteristics of complex structure, more parts, high installation position, high precision requirement, large hoisting risk and the like, and is difficult to control construction cost, construction progress, construction quality and construction safety because the installation period of one heavy cast metallurgy four-beam bridge type 480t/80t crane is 45 days in the traditional early installation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the off-line installation method of the cast metallurgy four-beam bridge crane, which improves the installation efficiency, reduces the hoisting steps, is simple to implement and reduces the construction cost
In order to solve the technical problem, the invention is realized as follows:
an off-line installation method of a cast-metallurgy four-beam bridge crane is characterized by comprising the following steps:
the method comprises the following steps: construction preparation;
1.1, determining installation positions on two cart traveling tracks between two adjacent cross-north ends, and measuring and positioning reference points by using a theodolite, wherein connecting lines of the two positioning reference points are respectively vertical to the central line of the tracks;
1.2, the arrival transportation direction of the main beam is determined according to an equipment on-site entering route, an equipment on-site stacking position and a station diagram during crane installation, and the equipment is poured or driven to a specified position according to on-site actual planning after arriving at the site;
1.3 before the traveling crane is installed, a two-span roof structure reserved by a structural professional is not installed, the rest structures and the rails are installed completely, the secondary grouting of the plant columns is completed, and the supporting and welding among the columns are completed, so that the plant structure forms a frame stable structure;
1.4, carrying out safety and quality technology intersection on installation personnel, determining the maximum lifting capacity and the operation radius of each part, and selecting a proper crawler crane, a steel wire rope and a clamping ring;
step two, mounting a heavy cast metallurgy four-beam bridge type 480t/80t crane;
2.1 hoisting the main beam of the cab;
assembling main beams, a traveling mechanism, a platform, a rail, a heat insulation plate, a cab and other components on the ground in a dephosphorization (carbon) feeding manner, wherein the total weight of the main beams of the cab is 120t after the assembly is finished;
the hoisting is carried out by adopting 4 fiber core steel wire ropes;
2.2 hoisting the inner main beam;
after the main beam of the cab is hoisted in place, the main beam is pulled out of a hoisting area of the crawler crane by a chain block so as to hoist the inner main beam, the number of the inner main beam is two, and the heat insulation plate, the platform and the walking mechanism are assembled on the ground and then hoisted in sequence; the weight of the inner beam is 80 t; the hoisting is carried out by adopting 4 32t shackles and four fiber core steel wire ropes.
2.3 hoisting the main beam of the electric room;
after the inner main beam is hoisted in place, the inner main beam is successively pulled out of the hoisting area of the crawler crane by a chain block to hoist the main beam of the electric room; the walking mechanism, the platform, the railings, the heat insulation boards and other parts are assembled on the ground, and the overall weight of the main beam of the electric room after the assembly is finished is 118 t; the hoisting is carried out by using four fiber core steel wire ropes;
2.4 hoisting the auxiliary trolley;
after the main beam of the cab, the main beam of the electric room and the inner main beam are hoisted, the bridge is connected into a whole, and the auxiliary trolley is hoisted; the auxiliary trolley is hoisted by adopting two fiber core steel wire rope pockets;
2.5 hoisting the lower trolley of the main trolley;
the total weight of the main trolley is 253t, the main trolley consists of an upper trolley and a lower trolley, the lower trolley is two pieces, the weight of a single piece is about 50t, and the lower trolley is hoisted by adopting two fiber core steel wire rope pockets;
2.6 hoisting the upper frame of the main trolley;
the upper frame consists of three parts, is integrally assembled on the ground and then hoisted, and is heavy 80t after being assembled; four 32t shackles and four fiber core steel wire ropes are adopted for hoisting the upper frame.
The invention has the beneficial effects that: the heat insulation plate, the platform and the walking mechanism are assembled on the ground and then hoisted in sequence, so that the high-altitude operation time is reduced, the safety risk is maximally reduced, meanwhile, the installation efficiency is improved due to the fact that the components are integrally hoisted after being assembled in a modularized mode, hoisting steps are reduced, implementation is simple, and the construction cost is reduced.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a vertical elevation of the hoist;
FIG. 2 is a plan view of a crane station;
FIG. 3 is a lifting plan view of a main beam of the cab;
FIG. 4 is a plan view A of the inner girder;
FIG. 5 is a plan view B of the inner girder;
FIG. 6 is a plan view of the electrical room girder;
FIG. 7 is a plan view of the auxiliary trolley hoist;
fig. 8 is a plan view of the main trolley hoisting.
Detailed Description
As shown in fig. 1-8: an off-line installation method of a cast-metallurgy four-beam bridge crane is characterized by comprising the following steps:
the method comprises the following steps: construction preparation;
1.1, determining installation positions on two cart traveling tracks between two adjacent cross-north ends, and measuring and positioning reference points by using a theodolite, wherein connecting lines of the two positioning reference points are respectively vertical to the central line of the tracks;
1.2, the arrival transportation direction of the main beam is determined according to an equipment on-site entering route, an equipment on-site stacking position and a station diagram during crane installation, and the equipment is poured or driven to a specified position according to on-site actual planning after arriving at the site;
1.3 before the traveling crane is installed, a two-span roof structure reserved by a structural professional is not installed, the rest structures and the rails are installed completely, the secondary grouting of the plant columns is completed, and the supporting and welding among the columns are completed, so that the plant structure forms a frame stable structure;
1.4, carrying out safety and quality technology intersection on installation personnel, determining the maximum lifting capacity and the operation radius of each part, and selecting a proper crawler crane, a steel wire rope and a clamping ring;
step two, mounting a heavy cast metallurgy four-beam bridge type 480t/80t crane;
2.1 hoisting the main beam of the cab;
assembling parts such as a main beam, a traveling mechanism, a platform, a railing, a heat insulation board, a cab and the like on +/-0 ground between 23-25 lines of a dephosphorization (carbon) feeding span, wherein the overall weight of the main beam of the cab is 120t after the assembly is finished;
4 fiber core steel wire ropes with diameter of 72mm (6 x 37) are adopted for hoisting, and the length is 13 m;
2.2 hoisting the inner main beam;
after the main beam of the cab is hoisted in place, the main beam is pulled out of a hoisting area of the crawler crane by a chain block so as to hoist the inner main beam, the number of the inner main beam is two, and the heat insulation plate, the platform and the walking mechanism are assembled on the ground and then hoisted in sequence; the weight of the inner beam is 80 t; the hoisting is carried out by using 4 32t shackles and 4 fiber core steel wire ropes with phi 64mm (6 x 37) in a binding manner, and the length is 18 m.
2.3 hoisting the main beam of the electric room;
after the inner main beam is hoisted in place, the inner main beam is successively pulled out of the hoisting area of the crawler crane by a chain block to hoist the main beam of the electric room; the walking mechanism, the platform, the railings, the heat insulation boards and other parts are assembled on the ground, and the overall weight of the main beam of the electric room after the assembly is finished is 118 t; 4 fiber core steel wire ropes with diameter of 72mm (6 x 37) are adopted for hoisting, and the length is 13 m;
2.4 hoisting the auxiliary trolley;
after the main beam of the cab, the main beam of the electric room and the inner main beam are hoisted, the bridge is connected into a whole, and the auxiliary trolley is hoisted; the auxiliary trolley weighs about 40.5 t. The auxiliary trolley is hoisted by adopting 2 fiber core steel wire ropes with phi of 50mm (6 x 37) in a bag, and the length of the auxiliary trolley is 18 m;
2.5 hoisting the lower trolley of the main trolley;
the total weight of the main trolley is 253t and the main trolley consists of an upper trolley and a lower trolley. The lower trolley is 2 pieces in total, and the weight of each piece is about 50 t. 2 fiber core steel wire ropes with the diameter of 50mm (6 x 37) are used for packing the lower trolley in a hanging mode, and the length of the lower trolley is 18 m;
2.6 hoisting the upper frame of the main trolley;
the upper frame is 13.9m long and 8m wide and consists of three parts. Firstly, integrally assembling the frame on the ground, and then hoisting the frame, wherein the weight of the upper frame is 80t after the upper frame is assembled; the upper frame is hoisted by adopting 4 32t shackles and 4 fiber core steel wire ropes with phi 64mm (6 x 37) in a binding manner, and the length is 18 m.
The heavy-duty cast metallurgy four-beam bridge crane consists of a crane body and a crane body;
the total number of the dephosphorizing (carbon) feeding strides 480/80t traveling cranes is 4, the number of the dephosphorizing feeding strides is SM-01 and SM-02, the number of the decarburizing feeding strides is SM-04 and SM-05, the track gauge of the traveling cranes is 21.7m, and the installation height is 28.17m, and the device is mainly used for lifting the steel ladle. The total weight of the travelling crane is 750t, the travelling crane mainly comprises two main beams, two inner main beams (auxiliary beams), end beams, a main trolley, a cab, a lifting appliance and other main components, the length of the main beam is 22.90m, the weight of the main beam on the electric chamber side is about 118t, the weight of the main beam on the cab is about 120t, the total weight of the main trolley is about 253t, and the travelling crane comprises an upper trolley, two lower trolleys, a main roll, a speed reducer, a pulley block, a safety brake and the like. The length of the upper trolley frame is 13.9m, the width is 8m, the height is 2.11m, in order to facilitate the transportation of the upper trolley frame, the upper trolley frame is disassembled and transported in three parts, the weight of the upper trolley frame is 80t after field assembly, and the weight of the auxiliary trolley is about 40.5 t. According to the field condition and the travelling weight, the main parts of the travelling crane are hoisted by adopting a cc2600 type 450t crawler crane, and other scattered parts are hoisted by adopting a 50t truck crane.
Claims (1)
1. An off-line installation method of a cast-metallurgy four-beam bridge crane is characterized by comprising the following steps:
the method comprises the following steps: construction preparation;
1.1, determining installation positions on two cart traveling tracks between two adjacent cross-north ends, and measuring and positioning reference points by using a theodolite, wherein connecting lines of the two positioning reference points are respectively vertical to the central line of the tracks;
1.2, the arrival transportation direction of the main beam is determined according to an equipment on-site entering route, an equipment on-site stacking position and a station diagram during crane installation, and the equipment is poured or driven to a specified position according to on-site actual planning after arriving at the site;
1.3 before the traveling crane is installed, a two-span roof structure reserved by a structural professional is not installed, the rest structures and the rails are installed completely, the secondary grouting of the plant columns is completed, and the supporting and welding among the columns are completed, so that the plant structure forms a frame stable structure;
1.4, carrying out safety and quality technology intersection on installation personnel, determining the maximum lifting capacity and the operation radius of each part, and selecting a proper crawler crane, a steel wire rope and a clamping ring;
step two, mounting a heavy cast metallurgy four-beam bridge type 480t/80t crane;
2.1 hoisting the main beam of the cab;
assembling main beams, a traveling mechanism, a platform, a rail, a heat insulation plate, a cab and other components on the ground in a dephosphorization (carbon) feeding manner, wherein the total weight of the main beams of the cab is 120t after the assembly is finished;
the hoisting is carried out by adopting 4 fiber core steel wire ropes;
2.2 hoisting the inner main beam;
after the main beam of the cab is hoisted in place, the main beam is pulled out of a hoisting area of the crawler crane by a chain block so as to hoist the inner main beam, the number of the inner main beam is two, and the heat insulation plate, the platform and the walking mechanism are assembled on the ground and then hoisted in sequence; the weight of the inner beam is 80 t; the hoisting is carried out by adopting 4 32t shackles and four fiber core steel wire ropes.
2.3 hoisting the main beam of the electric room;
after the inner main beam is hoisted in place, the inner main beam is successively pulled out of the hoisting area of the crawler crane by a chain block to hoist the main beam of the electric room; the walking mechanism, the platform, the railings, the heat insulation boards and other parts are assembled on the ground, and the overall weight of the main beam of the electric room after the assembly is finished is 118 t; the hoisting is carried out by using four fiber core steel wire ropes;
2.4 hoisting the auxiliary trolley;
after the main beam of the cab, the main beam of the electric room and the inner main beam are hoisted, the bridge is connected into a whole, and the auxiliary trolley is hoisted; the auxiliary trolley is hoisted by adopting two fiber core steel wire rope pockets;
2.5 hoisting the lower trolley of the main trolley;
the total weight of the main trolley is 253t, the main trolley consists of an upper trolley and a lower trolley, the lower trolley is two pieces, the weight of a single piece is about 50t, and the lower trolley is hoisted by adopting two fiber core steel wire rope pockets;
2.6 hoisting the upper frame of the main trolley;
the upper frame consists of three parts, is integrally assembled on the ground and then hoisted, and is heavy 80t after being assembled; four 32t shackles and four fiber core steel wire ropes are adopted for hoisting the upper frame.
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| CN201911059742.0A CN110902573B (en) | 2019-11-01 | 2019-11-01 | Off-line installation method of cast metallurgy four-beam bridge crane |
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| CN110902573B CN110902573B (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114572878A (en) * | 2022-03-09 | 2022-06-03 | 石横特钢集团有限公司 | Method for installing steel wire rope of crane trolley |
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| CN106429869A (en) * | 2016-10-26 | 2017-02-22 | 中国二十二冶集团有限公司 | Horizontal heavy equipment aerial mounting device and mounting method |
| CN109626224A (en) * | 2018-11-29 | 2019-04-16 | 上海市基础工程集团有限公司 | Bridge crane peace dismounting construction method in the confined space |
| CN110104564A (en) * | 2018-12-18 | 2019-08-09 | 南通振华重型装备制造有限公司 | A kind of bridge crane total coating process |
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2019
- 2019-11-01 CN CN201911059742.0A patent/CN110902573B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759863A (en) * | 2015-04-16 | 2015-07-08 | 上海振华重工集团（南通）有限公司 | Fixed crane on-site general assembly technology |
| CN105152032A (en) * | 2015-09-08 | 2015-12-16 | 中国十七冶集团有限公司 | Installing method for bridge crane in enclosed environment workshop |
| CN105565175A (en) * | 2016-03-08 | 2016-05-11 | 中冶建工集团有限公司 | Installation method for large bridge crane |
| CN106429869A (en) * | 2016-10-26 | 2017-02-22 | 中国二十二冶集团有限公司 | Horizontal heavy equipment aerial mounting device and mounting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114572878A (en) * | 2022-03-09 | 2022-06-03 | 石横特钢集团有限公司 | Method for installing steel wire rope of crane trolley |
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