CN111776939B - Cross-inner hoisting installation method for belt type roasting machine - Google Patents
Cross-inner hoisting installation method for belt type roasting machine Download PDFInfo
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- CN111776939B CN111776939B CN202010578286.7A CN202010578286A CN111776939B CN 111776939 B CN111776939 B CN 111776939B CN 202010578286 A CN202010578286 A CN 202010578286A CN 111776939 B CN111776939 B CN 111776939B
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- roasting machine
- factory building
- hoisting
- head pulley
- installation
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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
- 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
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses an inter-span hoisting installation method for a belt type roasting machine, which relates to the technical field of roasting machine installation.
Description
Technical Field
The invention relates to the technical field of installation of roasting machines, in particular to an inter-span hoisting installation method for a belt type roasting machine.
Background
The roasting machine as a large member has the characteristics of strict installation precision requirement, high equipment confidentiality degree, more equipment single pieces and heavy weight, and the installation process is always a serious difficulty of project construction. Regarding the installation process of the roasting machine, only two Chinese patent documents with publication numbers of CN105783516A and CN102401564A are disclosed in the patent documents in the public state at present, and the applicant is Shanghai Limited company of Wu metallurgical group, and two specific installation methods of the belt type roasting machine are respectively disclosed. The two installation methods solve the problem that the traditional method for installing the roasting machine has no prior feasible scheme for reference, and establish safe and reliable implementation standards for installing the straight-belt roasting machine.
However, for both of the two installation methods, large-scale hoisting equipment is adopted to realize the outer-span hoisting installation, and after the installation of the roasting machine body and the furnace cover system is finished, the installation of the upper structure of the steel structure factory building and the color plate sealing are carried out. However, since the cross-over hoisting method is limited by the operation radius and the hoisting height, a crane with a weight of 100 tons or less can only hoist a proximal member, and a crane with a weight of 100 tons or more must be used for a distal member, the requirement of the whole hoisting method on the specifications of the crane is extremely high, the implementation cost of the project is high, and the implementation and installation efficiency is low.
Disclosure of Invention
The invention aims to provide an inter-span hoisting installation method for a belt type roasting machine, which can effectively reduce the requirement of the whole project on the specification of a crane, thereby reducing the implementation cost of the project.
The embodiment of the invention is realized by the following steps:
an inter-span hoisting installation method for a straight grate roasting machine comprises the following steps:
s1, mounting a lower part structure of a steel structure factory building of the roasting machine to form a semi-factory building structure, mounting a steel structure platform in the semi-factory building structure to form a roasting machine mounting base, and then paying off a central line of the roasting machine on the roasting machine mounting base;
s2, hoisting the head pulley assembly of the belt type roasting machine into the semi-factory building structure by using a hoisting device, and then completing the mounting process of the head pulley assembly in the semi-factory building structure;
s3, mounting the upper structure of the steel structure workshop of the roasting machine to form a workshop structure; then, building a workshop crane in the workshop structure;
wherein, a temporary hoisting hole is reserved in the process of mounting the upper structure of the steel structure factory building of the roasting machine;
and S4, hoisting and unloading the other components of the belt type roasting machine to the plant structure through the temporary hoisting holes by using the hoisting device, and hoisting and conveying the other components of the belt type roasting machine by using the plant crane to complete the installation of the whole belt type roasting machine.
Preferably, the head wheel assembly comprises a head wheel lower framework and a head wheel body.
Preferably, the lower structure of the steel structure factory building comprises lower columns; the upper structure of the steel structure workshop comprises an upper column, a workshop cross beam, a workshop travelling beam and a roof beam.
Preferably, in step S3, temporary hoisting holes are formed in a manner that a reserved portion of the plant beams is not installed, and the plant beams are installed after the whole belt-type roasting machine is installed.
Preferably, in step S4, purlin and color plate installation is performed to close the plant structure.
Preferably, in step S2, the head pulley lower framework is first hoisted into the semi-factory building structure, and after the head pulley lower framework is installed on the basis of the installation of the roasting machine and has the head pulley body in-place condition, the head pulley body is hoisted into the semi-factory building structure, so as to install the head pulley body.
Preferably, the mounting of the middle frame of the roasting machine is completed at the same time as the step S3.
Preferably, the number of the factory building traveling cranes is two.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
(1) the invention mainly provides an inter-span hoisting installation method, which mainly comprises the steps of hoisting a head wheel assembly to a semi-factory building structure, sequentially building the rest structures of the factory building after the head wheel assembly is installed, and hoisting the rest components of a belt type roasting machine by using a travelling crane of the factory building, so that the influence of the operation radius on the traditional mode is avoided, a crane with a higher specification is required, and the implementation cost of a project is reduced.
(2) In the traditional outer span hoisting process, after the component is hoisted to the inner span, a crane driver cannot check the installation in-place condition of the inner span, and the whole hoisting process needs to be commanded by using wireless communication equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow chart of example 1 of the present invention;
fig. 2 is a schematic diagram of a factory building structure in embodiment 1 of the present invention.
[ Specification of symbols ]
10-lower structure, 20-upper structure, 30-installation foundation and 40-factory crane.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 and 2, the present embodiment 1 provides an inter-span hoisting installation method for a straight grate type roasting machine, which includes the following steps:
s1, mounting a lower part structure of a steel structure factory building of the roasting machine to form a semi-factory building structure, mounting a steel structure platform in the semi-factory building structure to form a roasting machine mounting base, and then paying off a central line of the roasting machine on the roasting machine mounting base;
s2, hoisting the head pulley assembly of the belt type roasting machine into the semi-factory building structure by using a hoisting device, and then completing the mounting process of the head pulley assembly in the semi-factory building structure;
s3, mounting the upper structure of the steel structure workshop of the roasting machine to form a workshop structure; then, building a workshop crane in the workshop structure;
wherein, a temporary hoisting hole is reserved in the process of mounting the upper structure of the steel structure factory building of the roasting machine;
and S4, hoisting and unloading the other components of the belt type roasting machine to the plant structure through the temporary hoisting holes by using the hoisting device, and hoisting and conveying the other components of the belt type roasting machine by using the plant crane to complete the installation of the whole belt type roasting machine.
The steel structure factory building refers to a steel skeleton structure of a roasting machine factory building, the semi factory building structure refers to a steel skeleton structure only provided with a lower structure, and the factory building structure refers to a steel skeleton structure provided with a lower structure and an upper structure at the same time.
In this embodiment 1, the lower structure of the steel structure factory building includes lower columns; the upper structure of the steel structure workshop comprises an upper column, a workshop cross beam, a workshop travelling beam and a roof beam.
In addition, more importantly, in this embodiment 1, the head wheel assembly specifically refers to the head wheel lower skeleton and the head wheel body, and these two types of weights are the largest, so that the specifications of the traveling crane in a factory building are difficult to meet, and only a member directly hoisted by using an external-crossing hoisting device can be adopted.
In the middle of this embodiment 1 mainly handling first wheel subassembly to half factory building structure earlier, treat the first wheel subassembly installation back that finishes, build the residual structure of factory building again, later, recycle the driving of factory building itself place and hoist other components of belt roasting machine to in the middle of having avoided traditional mode, received the influence of operation radius, and the condition that leads to adopting higher specification crane takes place. The whole scheme of the embodiment 1 makes full use of the traveling crane in the factory building, and has the advantages of high implementation efficiency and low implementation cost, and strong non-obvious property.
In addition, in the traditional outer-span hoisting process, after the component is hoisted to the inner span, a crane driver cannot check the installation in-place condition of the inner span, and the whole hoisting process needs to be commanded by using wireless communication equipment.
According to the practical application object of the method, according to the original project original plan and construction period requirements, the time of covering 1 month by 1 75-ton crawler crane for 4 months and covering 1 month by 100-ton automobile for 2 months, and by adopting the method, the factory building travelling crane is carried by the factory building structure, so that only one 25-ton crane needs to be deployed, and the project machinery cost is saved by about 40 ten thousand yuan.
Further, in this embodiment 1, the mounting of the center frame of the roasting machine is completed while the step S3 is performed.
Further, in this embodiment 1, in step S3, temporary hoisting holes are formed in a manner that a reserved portion of the plant cross beams is not installed, and after the whole belt-type roasting machine is installed, the plant cross beams are installed, and the implementer may also form the temporary hoisting holes in other manners.
Further, in step S2, the lower frame of the head pulley is first hoisted into the semi-factory building structure, and after the lower frame of the head pulley is installed on the basis of the installation of the roasting machine and has the in-place condition of the head pulley body, the head pulley body is hoisted into the semi-factory building structure, so as to install the head pulley body.
More specifically, in this embodiment 1, the temporary hoisting holes are formed at the positions of the lines 1 and 2 of the whole factory building. The positions of the tail wheels are at 32 and 33 lines, and the conditions required for installing the tail wheels in place are more complicated than those of the head wheels, so when the superstructure of a factory building is installed, upper columns of 33 and 34 lines need to be reserved for facilitating hoisting of the tail wheels at the back.
It can be understood that, compared with the conventional method in which the upper structure of the plant at the lifting surface is installed after the whole roasting machine is assembled, the upper structure of the plant in this embodiment 1 is completely installed in place earlier, so that the installation of purlins and color plates in the sealing process is earlier under the implementation conditions, and can be performed synchronously with the installation process of the roasting machine, thereby improving the installation environment of the roasting machine from outdoor construction (the construction in an unsealed plant can be regarded as outdoor construction) to indoor construction. It has the following advantages:
(a) after the plant is closed, the night lighting effect is enhanced, and night overtime construction is safer;
(b) the method provides better water cut-off conditions for the refractory construction, and can improve the convenience and quality control of the refractory construction.
In this embodiment 1, the concrete quantity of factory building driving is two, and 1 is used for unloading, and 1 installs in succession in addition, and 2 driving all can drop into the installation when no task of unloading, compare in striding outer hoist and mount, and hoist and mount efficiency, convenience, the security of factory building driving all have obvious advantage.
In addition, in the present embodiment 1, the installation order of the furnace hood system of the roasting machine, the charging system, and the like is specifically:
the method comprises the steps of installing the components of the roasting machine (including an upper trolley and a lower trolley in place), completing the residual installation of a head wheel and a tail wheel, installing a furnace cover system frame, installing a side wall plate (building delivery), installing the furnace cover system (installing from the tail to the head), returning a wide belt, installing a multi-roller distributor → laying a bottom material, installing a side laying material bin and a chute → installing a wide belt and a shuttle distributor.
In the whole installation process, partial procedures such as bottom material laying, edge material laying gallery, color plates and the like are not described in detail, and all the procedures can be carried out alternately.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An inter-span hoisting installation method for a belt type roasting machine is characterized by comprising the following steps:
s1, mounting a lower part structure of a steel structure factory building of the roasting machine to form a semi-factory building structure, mounting a steel structure platform in the semi-factory building structure to form a roasting machine mounting base, and then paying off a central line of the roasting machine on the roasting machine mounting base;
s2, hoisting the head pulley assembly of the belt type roasting machine into the semi-factory building structure by using a hoisting device, and then completing the mounting process of the head pulley assembly in the semi-factory building structure;
s3, mounting the upper structure of the steel structure workshop of the roasting machine to form a workshop structure; then, building a workshop crane in the workshop structure;
wherein, a temporary hoisting hole is reserved in the process of mounting the upper structure of the steel structure factory building of the roasting machine;
and S4, hoisting and unloading the other components of the belt type roasting machine to the plant structure through the temporary hoisting holes by using the hoisting device, and hoisting and conveying the other components of the belt type roasting machine by using the plant crane to complete the installation of the whole belt type roasting machine.
2. The cross-inside suspension installation method for the straight grate roaster according to claim 1, wherein the head pulley assembly comprises a head pulley lower frame and a head pulley body.
3. The method of claim 1, wherein the lower structure of the steel structure plant includes a lower column; the upper structure of the steel structure workshop comprises an upper column, a workshop cross beam, a workshop travelling beam and a roof beam.
4. The method of claim 3, wherein in step S3, temporary hanging holes are formed in such a way that a part of the plant beams is not installed, and the plant beams are installed after the whole of the straight grate is installed.
5. The cross-inside suspension installation method for the band-type roasting machine according to claim 1, wherein purlin and color plate installation is performed to close the factory building structure in step S4.
6. The method of claim 1, wherein in step S2, the lower frame of the head pulley is first hoisted into the semi-factory building structure, and after the lower frame of the head pulley is installed on the installation base of the roasting machine with the positioning condition of the head pulley body, the head pulley body is hoisted into the semi-factory building structure to install the head pulley body.
7. The cross-inside suspension installation method for the straight grate roaster according to claim 1, wherein the step S3 is performed while the installation of the center frame of the roasting machine is completed.
8. A method of cross-over hoist installation for a torrefaction plant according to claim 1, wherein the number of said plant trolleys is two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010578286.7A CN111776939B (en) | 2020-06-23 | 2020-06-23 | Cross-inner hoisting installation method for belt type roasting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010578286.7A CN111776939B (en) | 2020-06-23 | 2020-06-23 | Cross-inner hoisting installation method for belt type roasting machine |
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| CN111776939A CN111776939A (en) | 2020-10-16 |
| CN111776939B true CN111776939B (en) | 2022-04-26 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399546A (en) * | 1979-09-28 | 1983-08-16 | Dresser Industries, Inc. | Silicon carbide furnace |
| JP4124272B1 (en) * | 2007-12-26 | 2008-07-23 | 株式会社日本起重機製作所 | Suspension tool for wide pallet truck for sintering machine |
| CN102062538A (en) * | 2009-11-16 | 2011-05-18 | 鞍钢建设集团有限公司 | Method for mounting head sprocket wheel of belt sintering machine |
| CN102072655A (en) * | 2011-01-30 | 2011-05-25 | 宝鸡市晋旺达机械设备有限公司 | Energy-saving chain belt type sintering machine |
| CN102401564A (en) * | 2010-09-13 | 2012-04-04 | 五冶集团上海有限公司 | Installation method of belt type roasting machine |
| CN104075565A (en) * | 2014-06-24 | 2014-10-01 | 中国华冶科工集团有限公司 | Continuous strand sinter machine steel strip installing method |
| CN104973517A (en) * | 2015-06-26 | 2015-10-14 | 天津二十冶建设有限公司 | Electric gantry platform for installing sintering machine head equipment and application method thereof |
| CN105035965A (en) * | 2015-05-31 | 2015-11-11 | 天津二十冶建设有限公司 | Method for installing dust reducing pipes of large sintering machine |
| CN105783516A (en) * | 2014-12-22 | 2016-07-20 | 五冶集团上海有限公司 | Installation method of 5,000,000-ton/a pellet roasting machine |
| CN206019336U (en) * | 2016-09-07 | 2017-03-15 | 中钢设备有限公司 | Chassis more changing device |
| CN108895849A (en) * | 2018-08-30 | 2018-11-27 | 中冶长天国际工程有限责任公司 | Ring cold machine and its heat dissipation recycling component and method, oxide pellet Preparation equipment |
-
2020
- 2020-06-23 CN CN202010578286.7A patent/CN111776939B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399546A (en) * | 1979-09-28 | 1983-08-16 | Dresser Industries, Inc. | Silicon carbide furnace |
| JP4124272B1 (en) * | 2007-12-26 | 2008-07-23 | 株式会社日本起重機製作所 | Suspension tool for wide pallet truck for sintering machine |
| CN102062538A (en) * | 2009-11-16 | 2011-05-18 | 鞍钢建设集团有限公司 | Method for mounting head sprocket wheel of belt sintering machine |
| CN102401564A (en) * | 2010-09-13 | 2012-04-04 | 五冶集团上海有限公司 | Installation method of belt type roasting machine |
| CN102072655A (en) * | 2011-01-30 | 2011-05-25 | 宝鸡市晋旺达机械设备有限公司 | Energy-saving chain belt type sintering machine |
| CN104075565A (en) * | 2014-06-24 | 2014-10-01 | 中国华冶科工集团有限公司 | Continuous strand sinter machine steel strip installing method |
| CN105783516A (en) * | 2014-12-22 | 2016-07-20 | 五冶集团上海有限公司 | Installation method of 5,000,000-ton/a pellet roasting machine |
| CN105035965A (en) * | 2015-05-31 | 2015-11-11 | 天津二十冶建设有限公司 | Method for installing dust reducing pipes of large sintering machine |
| CN104973517A (en) * | 2015-06-26 | 2015-10-14 | 天津二十冶建设有限公司 | Electric gantry platform for installing sintering machine head equipment and application method thereof |
| CN206019336U (en) * | 2016-09-07 | 2017-03-15 | 中钢设备有限公司 | Chassis more changing device |
| CN108895849A (en) * | 2018-08-30 | 2018-11-27 | 中冶长天国际工程有限责任公司 | Ring cold machine and its heat dissipation recycling component and method, oxide pellet Preparation equipment |
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| CN111776939A (en) | 2020-10-16 |
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