CN114055025A - Welding platform for main body of smelting reduction furnace and construction method thereof - Google Patents
Welding platform for main body of smelting reduction furnace and construction method thereof Download PDFInfo
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- CN114055025A CN114055025A CN202111429534.2A CN202111429534A CN114055025A CN 114055025 A CN114055025 A CN 114055025A CN 202111429534 A CN202111429534 A CN 202111429534A CN 114055025 A CN114055025 A CN 114055025A
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- platform
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/18—Scaffolds primarily resting on the ground adjustable in height
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a welding platform for a main body of a smelting reduction furnace, which comprises a central platform and a working platform which is expanded outwards based on the central platform, wherein the working platform is connected with the central platform through a telescopic beam; the bottom of the central platform is provided with a base, and the bottom of the base is provided with a hydraulic jacking system; a mechanism for driving the central platform to rotate is also arranged in the base; the invention also provides a construction method of the welding platform of the main body of the smelting reduction furnace, wherein the welding platform of the main body of the smelting reduction furnace is fixed with the bottom of the MPR furnace; lifting the central platform to the height of the welding seam; the hydraulic rod pushes the working platform outwards and reaches the position of a welding seam; the operating platform is small in size, telescopic and rotatable, linear long weld joint welding is realized by a point type small platform, multiple times of height positioning can be realized by one-time installation, the building work of a scaffold is effectively reduced, and the safety of the welding work is greatly improved.
Description
Technical Field
The invention belongs to the technical field of welding construction platforms, and particularly relates to a welding platform for a main body of a smelting reduction furnace.
Background
The main body of the smelting reduction furnace (MPR furnace for short) is a steel plate welding cylinder structure. When the furnace body structure is used for constructing each section of the furnace shell, a walking platform is built inside the furnace by utilizing a scaffold. Because the height difference of each layer of the furnace shell is large, the construction platform needs to be built once when each layer is added. The walking platform needs a supporting structure, and in order to ensure construction safety, the supporting structure is difficult to build at a higher position and is complex.
Disclosure of Invention
The invention aims to solve the problems, and provides a furnace body construction platform which is simple to install and convenient to operate.
The invention solves the problems and adopts the technical scheme that:
a welding platform for a main body of a smelting reduction furnace comprises a central platform and a working platform which is expanded outwards based on the central platform, wherein the working platform is connected with the central platform through a telescopic beam; the bottom of the central platform is provided with a base, and the bottom of the base is provided with a hydraulic jacking system.
Compared with the prior art, the invention adopting the structure has the beneficial effects that:
the operation platform is small in size and telescopic, multiple times of height positioning can be realized by one-time installation, and the time for multiple times of building of the platform supporting device is saved; the working platform extending outwards moves along the welding line, and the point type small platform realizes linear long welding line welding.
Preferably, the further technical scheme of the invention is as follows:
the upper end of the guide post extends to the height of the top of the furnace body, and the lower end of the guide post is fixed at the center of the bottom plate of the furnace body; a sleeve is arranged between the central platform and the base, the upper end of the sleeve is fixedly connected with the central platform, and the lower end of the sleeve is arranged in the base; the sleeve is movably sleeved on the guide post; the lower end of the sleeve, which is arranged in the base, is fixedly connected with a first gear, a motor is arranged in the base, a second gear is arranged on an output shaft of the motor, and the first gear is meshed with the second gear. This structure makes work platform can also move along the welding seam, only needs a platform of encorbelmenting can accomplish whole welded welding.
The bottom of the working platform is also provided with a hydraulic rod, and the working platform is pushed away from the central platform or pulled close to the central platform through the hydraulic rod; the hydraulic rod is obliquely arranged, a cylinder barrel of the hydraulic rod is fixedly connected with the lower part of the sleeve, and a piston end of the hydraulic rod is fixedly connected with the working platform. The hydraulic stem realizes the control of the outward extension distance of the working platform on the one hand in the structure, and forms the longitudinal support of the working platform on the other hand, thereby effectively ensuring the stability of the working platform.
And working platforms are symmetrically arranged on two sides of the central platform. This structure makes the platform balance better when rotating.
The hydraulic jacking system is an array formed by combining a plurality of hydraulic jacking vertical columns or a scissor-fork type jacking machine.
And a bearing is arranged between the sleeve and the guide post. The bearing can reduce the frictional resistance when the sleeve rotates.
The construction method of the welding platform of the main body of the smelting reduction furnace comprises the following steps:
step one, assembling the lower section of the MPR furnace to an installation position, and fixedly installing the welding platform of the main body of the smelting reduction furnace at the bottom of the lower section of the MPR furnace;
secondly, after the lower section and the middle section of the MPR furnace are assembled, hoisting the welding robot and the welding related devices into a working platform, and enabling the operating personnel to go up to the central platform for standby;
thirdly, lifting the central platform to a height suitable for welding by using a hydraulic jacking system;
fourthly, the worker enters the working platform from the central platform, and the working platform is pushed out towards the furnace shell by using the hydraulic rod to reach the position of the welding line;
fifthly, when the working platform reaches a welding working area, an operator controls the welding robot to start welding the interface;
sixthly, starting a motor, rotating the central platform through gear transmission, moving the working platform along the welding line, and finishing the welding work of the MPR furnace welding line by an operator;
seventhly, drawing back the working platform by using a hydraulic rod;
and eighthly, assembling the upper section and the middle section of the MPR furnace, jacking the central platform again by using a hydraulic jacking system, lifting the central platform to the height of the butt joint of the middle section and the upper section, and repeating the fourth step to the sixth step to complete the welding of the welding seam.
Compared with the prior art, the invention adopting the method has the beneficial effects that:
the method realizes the integral welding of the linear welding seam by controlling the rotation of the point type small platform; the position of the working platform can be adjusted through continuous height adjustment, a new supporting structure does not need to be additionally built, the facility size is small, and action adjustment is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a welding platform according to an embodiment of the present invention;
FIG. 2 is a schematic view of a top view of a welding platform according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal transmission structure of the base of the present invention;
FIG. 4 is a schematic view of the welding platform of the present invention positioned within a furnace;
FIG. 5 is a diagram of another embodiment of a hydraulic jacking system for a welding platform according to the present invention;
FIG. 6 is a schematic view of a variant embodiment of the welding platform according to the invention;
FIG. 7 is a schematic view of a rotational structure of the bonding stage according to the present invention.
In the figure: the device comprises a hydraulic jacking system 1, a base 2, a bottom plate 2-1, a bearing 2-2, a sleeve 3, a hydraulic rod 4, a working platform 5, a telescopic beam 6, a central platform 7, a guide post 8, a first gear 9, a second gear 10, a motor 11, a furnace body 12 and a welding line 13.
Detailed Description
The invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
Referring to fig. 1 and 2, the welding platform for the main body of the smelting reduction furnace provided by the invention comprises a central platform 7 and a working platform 5 which are arranged at the central position of a furnace body 12. The working platform 5 is connected with the central platform 7 through the telescopic beam 6, and the working platform 5 is arranged beside the furnace body welding line 13. The bottom of the central platform 7 is provided with a base 2, and the bottom of the base is provided with a hydraulic jacking system.
The hydraulic jacking system 1 is used for adjusting the heights of the central platform 7 and the working platform 5. It is always located at the bottom of the platform and should have sufficient jacking capacity. Specifically, as shown in fig. 1, the hydraulic jacking system of the present invention may be an array composed of a plurality of hydraulic jacking columns, and the plurality of hydraulic jacking columns share one hydraulic station and are synchronously controlled. As shown in fig. 5 and 6, the hydraulic jacking system 1 may be a scissor lift, a top platform of the scissor lift is fixedly connected with the lower surface of the base, and a lower platform is fixedly connected with the bottom of the furnace.
With reference to fig. 3 to 5, a guide post 8 is further provided, the upper end of the guide post 8 extends to the top height of the furnace body 12, and the lower end is fixed at the center of the bottom plate of the furnace body 12; a sleeve 3 is also arranged between the central platform 7 and the base 2, the upper end of the sleeve 3 is fixedly connected with the central platform 7, and the lower end is arranged in the base 2; the sleeve 3 is movably sleeved on the guide post 8; the lower end of the sleeve 3 arranged in the base 2 is fixedly connected with a first gear 9, a motor 11 is arranged in the base 2, a second gear 10 is arranged on an output shaft of the motor 11, and the first gear 9 is meshed with the second gear 10. The first gear 9 and the second gear 10 are bevel gears or helical gears according to the invention. The gear system and the motor are assembled in the base 2. The motor 11 is fixed on a bottom plate 2-1 of the base, a shaft sleeve is also arranged on the bottom plate 2-1 of the base, the lower end of the sleeve 3 is arranged in the shaft sleeve, and a bearing 2-2 is arranged between the sleeve 3 and the shaft sleeve; a bearing 2-2 is also arranged between the sleeve 3 and the guide post 8.
In the present invention, the center platform 7 is a rotation center of the construction surface, and the center platform 7 is a platform prepared by the operator. The welding operation is performed on the work platform 5 by a worker. The working platform 5 moves back and forth relative to the central platform 7, and when the working platform is in an outward expansion shape, a worker works on the working platform 5 to complete welding of the furnace shell. When the working platform 5 is in a folded state, the working personnel returns to the central platform 7 to wait for the adjustment of the height of the next construction platform. The central platform 7 is a transfer station and is also a central station of the rotating system.
The bottom of the working platform 5 is provided with a hydraulic rod 4, and the working platform 5 is pushed away from or pulled close to the central platform 7 through the hydraulic rod 4. Specifically, the hydraulic rod 4 may be horizontally disposed, one end of the cylinder is connected to the central platform 7, and the piston end is connected to the working platform 5. The hydraulic rod pushes the working platform 5 outwards straightly to move outwards, and the bearing and the support of the working platform 5 are completed by the telescopic beam 6. The telescopic beam 6 should be a sliding rod or a slideway with small moving resistance. Preferably, hydraulic stem 4 slant sets up, and its cylinder and 3 sub-unit connections of sleeve, its piston end are connected with work platform 5, and the hydraulic stem 4 that the slant was arranged in this structure realizes the control of 5 outside extension distances of work platform on the one hand, and on the other hand plays the vertical supporting role to work platform 5 when work platform 5 outwards removed, effectively guarantees work platform 5's stability.
7 footboard peripheries of central platform set up the rail, and rail some parts are provided with the dodge gate, and the dodge gate downside sets up the platform of stepping that links up with work platform 5, and when work platform 5 withdrawed, work platform's footboard and the platform of stepping butt joint, work platform 5 outside removal back, the platform position of stepping activity door was closed, and work platform 5 side also sets up same installation rail and emergency exit. The work platform 5 may be one, so that the overall structure is less heavy. In order to take the balance of the rotation system into consideration, as a modification of the present invention, referring to fig. 6 and 7, the work tables 5 are provided symmetrically on both sides of the center table 7.
The central platform 7 is also provided with a crawling ladder, so that the operators can conveniently go in and out of the construction platform.
The specific implementation method of the invention is as follows:
1. the MPR furnace lower section is paired to the installation position, and then the welding platform is installed inside the MPR furnace lower section and fixedly connected with the bottom of the MPR furnace.
2. Hoisting the middle section of the MPR furnace to the welding group, fixing the MPR furnace to the welding group by using a steel structure, hoisting the welding robot and the welding related devices to the working platform 5, and enabling the operators to stand by at the central platform 7 by using the crawling ladder.
4. And (3) jacking the whole welding platform by using the bottom hydraulic jacking system 1, and stopping the central platform 7 to a proper welding height.
5. After the operator enters the working platform 5, the hydraulic rod 4 is utilized to push the working platform 5 to the joint of the welding line 13.
5. At this time, the operator can perform welding work on the welding seam 13, or assemble the welding robot, adjust the height of the robot, and perform welding seam welding by using the welding robot.
6. By utilizing the occlusion of the first gear 9 and the second gear 10 and the matching of the motor 11, the gearbox and the bearing, the 360-degree forward and reverse rotation of the welding platform is realized, so that the working platform 5 can move along the welding line, and the welding line welding work of the MPR furnace is completed.
7. The working platform 5 is retracted by means of the hydraulic ram 4.
8. And (3) assembling the upper section of the MPR furnace to the middle section, supporting the upper section of the MPR furnace by using a steel structure, jacking the central platform 7 and the working platform 5 by using the bottom hydraulic jacking system 1, and repeating the welding process from 4 to 6 to complete the welding of the upper section and the middle section of the furnace body.
By utilizing the method, the multi-section main body welding work of the MPR furnace can be carried out, the construction work of the scaffold can be effectively reduced, the workload of the welding work is reduced, and meanwhile, the safety of the welding work is greatly improved. And the method can be used for welding work of the same type, has certain general type and is worth popularizing.
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 scope of the present invention, which is defined in the appended claims.
Claims (7)
1. A welding platform for a main body of a smelting reduction furnace comprises a central platform and a working platform which is expanded outwards based on the central platform,the method is characterized in that:the working platform is connected with the central platform through a telescopic beam; the bottom of the central platform is provided with a base, and the bottom of the base is provided with a hydraulic jacking system.
2. The welding platform for a main body of a smelting reduction furnace according to claim 1,the method is characterized in that:is also provided with a guideThe upper end of the guide column extends to the height of the top of the furnace body, and the lower end of the guide column is fixed at the center of the bottom plate of the furnace body; a sleeve is arranged between the central platform and the base, the upper end of the sleeve is fixedly connected with the central platform, and the lower end of the sleeve is arranged in the base; the sleeve is movably sleeved on the guide post; the lower end of the sleeve, which is arranged in the base, is fixedly connected with a first gear, a motor is arranged in the base, a second gear is arranged on an output shaft of the motor, and the first gear is meshed with the second gear.
3. The welding platform for a main body of a smelting reduction furnace according to claim 2,the method is characterized in that:the bottom of the working platform is also provided with a hydraulic rod, and the working platform is pushed away from the central platform or pulled close to the central platform through the hydraulic rod; the hydraulic rod is obliquely arranged, a cylinder barrel of the hydraulic rod is fixedly connected with the lower part of the sleeve, and a piston end of the hydraulic rod is fixedly connected with the working platform.
4. The smelting reduction furnace main body welding platform according to any one of claims 1 to 3,the method is characterized in that:and working platforms are symmetrically arranged on two sides of the central platform.
5. The welding platform for a main body of a smelting reduction furnace according to claim 1,the method is characterized in that:the hydraulic jacking system is an array formed by combining a plurality of hydraulic jacking vertical columns or a scissor-fork type jacking machine.
6. The welding platform for a main body of a smelting reduction furnace according to claim 4,the method is characterized in that:and a bearing is arranged between the sleeve and the guide post.
7. The method for constructing a welding platform for a main body of a smelting reduction furnace according to the above claim,the method is characterized in that:the method comprises the following steps:
step one, assembling the lower section of the MPR furnace to an installation position, and fixedly installing the welding platform of the main body of the smelting reduction furnace at the bottom of the lower section of the MPR furnace;
secondly, after the lower section and the middle section of the MPR furnace are assembled, hoisting the welding robot and the welding related devices into a working platform, and enabling the operating personnel to go up to the central platform for standby;
thirdly, lifting the central platform to a height suitable for welding by using a hydraulic jacking system;
fourthly, the worker enters the working platform from the central platform, and the working platform is pushed out towards the furnace shell by using the hydraulic rod to reach the position of the welding line;
fifthly, when the working platform reaches a welding working area, an operator controls the welding robot to start welding the interface;
sixthly, starting a motor, rotating the central platform through gear transmission, moving the working platform along the welding line, and finishing the welding work of the MPR furnace welding line by an operator;
seventhly, drawing back the working platform by using a hydraulic rod;
and eighthly, assembling the upper section and the middle section of the MPR furnace, jacking the central platform again by using a hydraulic jacking system, lifting the central platform to the height of the butt joint of the middle section and the upper section, and repeating the fourth step to the sixth step to complete the welding of the welding seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429534.2A CN114055025A (en) | 2021-11-29 | 2021-11-29 | Welding platform for main body of smelting reduction furnace and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429534.2A CN114055025A (en) | 2021-11-29 | 2021-11-29 | Welding platform for main body of smelting reduction furnace and construction method thereof |
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| CN114055025A true CN114055025A (en) | 2022-02-18 |
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| CN202111429534.2A Pending CN114055025A (en) | 2021-11-29 | 2021-11-29 | Welding platform for main body of smelting reduction furnace and construction method thereof |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0421977A2 (en) * | 1989-08-24 | 1991-04-10 | ELIN-UNION Aktiengesellschaft für elektrische Industrie | Mobile extensible working platform |
| US7607513B1 (en) * | 2007-11-29 | 2009-10-27 | Elmo Rojas | Telescoping lifting hand truck with a folding platform |
| CN104477815A (en) * | 2014-12-25 | 2015-04-01 | 哈尔滨工程大学 | Platform-retractable hydraulic lift |
| CN105108395A (en) * | 2015-09-28 | 2015-12-02 | 武汉一冶钢结构有限责任公司 | Blast furnace shell inner wall welding platform and erecting method thereof |
| CN207158740U (en) * | 2017-08-28 | 2018-03-30 | 青海盐湖工业股份有限公司 | Mobile maintenance platform |
| CN108518053A (en) * | 2018-06-14 | 2018-09-11 | 河北建筑工程学院 | A kind of umbrella shape moves hydraulic up-down floor scaffold and its construction method |
| CN208513895U (en) * | 2018-06-25 | 2019-02-19 | 中国海洋石油集团有限公司 | The unlimited rotary platform of marine oil pipeline J-type laying welding |
| CN109629815A (en) * | 2019-01-15 | 2019-04-16 | 江苏金海新能源科技有限公司 | Operation platform and construction equipment |
| CN210505469U (en) * | 2019-08-30 | 2020-05-12 | 济阳东方液压机械有限公司 | Movable lifting platform |
| CN210947648U (en) * | 2019-08-31 | 2020-07-07 | 山东天成钢结构有限公司 | Temporary workbench for high-altitude welding of steel structure |
| CN112091512A (en) * | 2020-09-18 | 2020-12-18 | 一重集团大连核电石化有限公司 | Movable and liftable welding working platform and operation method thereof |
| CN113549718A (en) * | 2021-07-19 | 2021-10-26 | 鞍钢建设集团有限公司 | Replacement method of blast furnace cooling wall |
-
2021
- 2021-11-29 CN CN202111429534.2A patent/CN114055025A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0421977A2 (en) * | 1989-08-24 | 1991-04-10 | ELIN-UNION Aktiengesellschaft für elektrische Industrie | Mobile extensible working platform |
| US7607513B1 (en) * | 2007-11-29 | 2009-10-27 | Elmo Rojas | Telescoping lifting hand truck with a folding platform |
| CN104477815A (en) * | 2014-12-25 | 2015-04-01 | 哈尔滨工程大学 | Platform-retractable hydraulic lift |
| CN105108395A (en) * | 2015-09-28 | 2015-12-02 | 武汉一冶钢结构有限责任公司 | Blast furnace shell inner wall welding platform and erecting method thereof |
| CN207158740U (en) * | 2017-08-28 | 2018-03-30 | 青海盐湖工业股份有限公司 | Mobile maintenance platform |
| CN108518053A (en) * | 2018-06-14 | 2018-09-11 | 河北建筑工程学院 | A kind of umbrella shape moves hydraulic up-down floor scaffold and its construction method |
| CN208513895U (en) * | 2018-06-25 | 2019-02-19 | 中国海洋石油集团有限公司 | The unlimited rotary platform of marine oil pipeline J-type laying welding |
| CN109629815A (en) * | 2019-01-15 | 2019-04-16 | 江苏金海新能源科技有限公司 | Operation platform and construction equipment |
| CN210505469U (en) * | 2019-08-30 | 2020-05-12 | 济阳东方液压机械有限公司 | Movable lifting platform |
| CN210947648U (en) * | 2019-08-31 | 2020-07-07 | 山东天成钢结构有限公司 | Temporary workbench for high-altitude welding of steel structure |
| CN112091512A (en) * | 2020-09-18 | 2020-12-18 | 一重集团大连核电石化有限公司 | Movable and liftable welding working platform and operation method thereof |
| CN113549718A (en) * | 2021-07-19 | 2021-10-26 | 鞍钢建设集团有限公司 | Replacement method of blast furnace cooling wall |
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