CN113445776A - Method for changing old chimney vertical ladder into rotary ladder - Google Patents
Method for changing old chimney vertical ladder into rotary ladder Download PDFInfo
- Publication number
- CN113445776A CN113445776A CN202110785703.XA CN202110785703A CN113445776A CN 113445776 A CN113445776 A CN 113445776A CN 202110785703 A CN202110785703 A CN 202110785703A CN 113445776 A CN113445776 A CN 113445776A
- Authority
- CN
- China
- Prior art keywords
- ladder
- rotary
- chimney
- rotating step
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/032—Spiral stairways supported by a central column
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/104—Treads
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/18—Balustrades; Handrails
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
Abstract
The invention relates to a method for changing an old chimney straight ladder into a rotary ladder, which comprises the following steps: firstly, prefabricating a single-piece rotating step plate and prefabricating a handrail; marking positions where the rotating steps need to be installed on the periphery of the chimney by scribing lines, sequentially installing single rotating step plates, firmly welding the single rotating step plates with the chimney, and firmly connecting every two single rotating step plates; welding a vertical rod on every other single-piece rotating step plate, and connecting every two adjacent vertical rods through a cross rod; thirdly, when the rotary ladder-walking construction is about to touch the vertical ladder, cutting off the vertical ladder section which influences the rotary ladder-walking construction, and continuing to perform the rotary ladder-walking construction; and (IV) cutting off the residual vertical ladder after the rotary ladder-walking construction is finished. The invention can save the workload of erecting a mechanical shift or a scaffold, safely and effectively carries out the chimney rotation ladder-walking transformation in a narrow space, and has higher practicability.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for changing an old chimney straight ladder into a rotary ladder.
Background
Along with the improvement of the social development level, governments pay more and more attention to environmental protection, and the monitoring strength on the smoke emission of the chimney is larger and larger, and the requirement is higher and higher. A plurality of old chimneys are all carrying out flue gas environmental protection type and are reforming transform the project, carry out the flue gas detection for chimney about making things convenient for the measurement personnel, need reform transform the original vertical ladder of a large amount of old chimneys into the rotation and walk the ladder. Therefore, it is necessary to provide a method for changing the old chimney inclined ladder into the rotary ladder.
Disclosure of Invention
In order to overcome the technical defects and shortcomings, the invention provides a method for changing an old chimney straight ladder into a rotary ladder, which can safely and effectively change the old chimney into the rotary ladder and is suitable for places which are inconvenient for a lift truck or a crane to stand in a narrow space.
The invention provides a method for changing an old chimney straight ladder into a rotary walking ladder, which comprises the following steps:
prefabricating a single-piece rotating step plate and prefabricating a handrail, wherein the handrail comprises a cross rod and a vertical rod;
marking positions where the rotating steps need to be installed on the periphery of the chimney by scribing lines, sequentially installing single rotating step plates, firmly welding the single rotating step plates with the chimney, and firmly connecting every two single rotating step plates; welding a vertical rod on every other single-piece rotating step plate, and connecting every two adjacent vertical rods through a cross rod;
thirdly, when the rotary ladder-walking construction is about to touch the vertical ladder, cutting off the vertical ladder section which influences the rotary ladder-walking construction, and continuing to perform the rotary ladder-walking construction;
and (IV) cutting off the residual vertical ladder after the rotary ladder-walking construction is finished.
Preferably, before construction, the safety rope and the safety catch are fixed on a reliable steel structure above the chimney platform; meanwhile, the safety rope is hung by the operating personnel and is hung on the falling protector.
Preferably, when the single rotary step plate is constructed, all the railings are constructed synchronously.
The embodiment of the invention has the following effects:
according to the invention, the vertical ladder is dismounted and modified without the cooperation of a traditional lift truck or a crane, the defect that the lift truck or the crane cannot rotate around the periphery of the chimney is overcome, meanwhile, the chimney is generally arranged close to the outer side of a factory building and is often narrow in peripheral space, and the problem that the lift truck or the crane cannot even stand and be modified in a matched manner is solved. Meanwhile, full framing does not need to be erected around the chimney, so that the method is more convenient and saves time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 shows an effect diagram of an old chimney straight ladder after implementation of a method for changing an old chimney straight ladder into a rotary ladder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, and all other embodiments that would be apparent to one skilled in the art without the benefit of the teachings herein are included.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
The invention discloses a method for changing an old chimney vertical ladder into a rotary ladder, which is claimed by the invention and is described in detail with reference to the accompanying drawings, wherein the method comprises the following steps:
prefabricating a single-piece rotating step plate and prefabricating a handrail, wherein the handrail comprises a cross rod and a vertical rod;
marking positions where the rotating steps need to be installed on the periphery of the chimney by scribing lines, sequentially installing single rotating step plates, firmly welding the single rotating step plates with the chimney, and firmly connecting every two single rotating step plates; welding a vertical rod on every other single-piece rotating step plate, and connecting every two adjacent vertical rods through a cross rod;
thirdly, when the rotary ladder-walking construction is about to touch the vertical ladder, cutting off the vertical ladder section which influences the rotary ladder-walking construction, and continuing to perform the rotary ladder-walking construction; by adopting the method, the vertical ladder is not required to be dismantled and modified by adopting the cooperation of a lift truck or a crane, so that the problem that the lift truck or the crane has operation dead angles and cannot rotate around the chimney is solved; meanwhile, the chimney lifting device can be suitable for chimney reconstruction in a narrow space, and particularly has an obvious positive effect when a lifting car or a crane cannot be used for standing. Meanwhile, the method does not need to adopt the traditional method of building a full scaffold around the chimney, so that the time and labor can be saved, and the construction is more convenient.
Specifically, in one possible embodiment, the worker hangs the double-hook safety belt, marks the position of the rotating step on the periphery of the chimney by marking lines, starts to install the first single-piece rotating step plate and welds firmly, installs the second single-piece rotating step plate and welds firmly, and connects the first single-piece rotating step plate and the second single-piece rotating step plate firmly. The third single-piece rotating step plate is installed and welded firmly, and the second single-piece rotating step plate and the third single-piece rotating step plate are connected firmly. Vertical rods are respectively welded on the first and third single-piece rotating stepping plates and connected through a cross rod. The job content is a work cycle.
And (IV) cutting off the residual vertical ladder after the rotary ladder-walking construction is finished.
Preferably, before construction, the safety rope and the safety catcher are fixed on a reliable steel structure above the chimney platform, and in order to ensure the safety of constructors, the safety rope and the safety catcher are strictly prohibited to be fixed on a railing or a vertical ladder; meanwhile, the safety rope is hung by the operating personnel and is hung on the falling protector.
Preferably, when the single rotary step plate is constructed, all the railings are constructed synchronously. Specifically, in one possible embodiment, the step (three) is repeated, that is, after each single-piece rotating step plate is installed, the single-piece rotating step plate is timely connected with the previous single-piece rotating step plate, and meanwhile, after each three single-piece rotating step plates are installed, the handrail is timely installed in place. The welding of the single-piece rotating step plate and the handrail must be in place, thereby meeting the quality requirement. During operation, a person stands on the single-piece rotating step plate, and the double-hook safety belt is hung on the falling protector. Therefore, the firmness of the single-piece rotating step plate can be guaranteed, the handrail can be installed in time, and the safety of operating personnel can be guaranteed. In the construction process, the safety belt of the personnel must be hung reliably.
The embodiment of the invention has the following effects:
in conclusion, the invention discloses a method for changing an old chimney vertical ladder into a rotary ladder, which can save the workload of setting up a mechanical bench or a scaffold, safely and effectively transform the chimney rotary ladder in a narrow space, and has higher practicability. Referring to fig. 1, an effect diagram of an old chimney straight ladder after implementation of a method for changing an old chimney straight ladder into a rotary ladder is shown.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The method for changing the old chimney straight ladder into the rotary ladder comprises the following steps:
prefabricating a single-piece rotating step plate and prefabricating a handrail, wherein the handrail comprises a cross rod and a vertical rod;
marking positions where the rotating steps need to be installed on the periphery of the chimney by scribing lines, sequentially installing single rotating step plates, firmly welding the single rotating step plates with the chimney, and firmly connecting every two single rotating step plates; welding a vertical rod on every other single-piece rotating step plate, and connecting every two adjacent vertical rods through a cross rod;
thirdly, when the rotary ladder-walking construction is about to touch the vertical ladder, cutting off the vertical ladder section which influences the rotary ladder-walking construction, and continuing to perform the rotary ladder-walking construction;
and (IV) cutting off the residual vertical ladder after the rotary ladder-walking construction is finished.
2. The method for changing the old chimney straight ladder into the rotary walking ladder according to claim 1, wherein before construction, a safety rope and a safety catch are fixed on a reliable steel structure above a chimney platform; meanwhile, the safety rope is hung by the operating personnel and is hung on the falling protector.
3. The method for changing the old chimney straight ladder into the rotary walking ladder according to claim 1, wherein when the single rotary step plate is constructed, all the railings are constructed synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785703.XA CN113445776A (en) | 2021-07-12 | 2021-07-12 | Method for changing old chimney vertical ladder into rotary ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110785703.XA CN113445776A (en) | 2021-07-12 | 2021-07-12 | Method for changing old chimney vertical ladder into rotary ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113445776A true CN113445776A (en) | 2021-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110785703.XA Pending CN113445776A (en) | 2021-07-12 | 2021-07-12 | Method for changing old chimney vertical ladder into rotary ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113445776A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141083A (en) * | 1997-11-07 | 1999-05-25 | Shuichi Matsuoka | Chimney-and-spiral staircase |
| CN202100044U (en) * | 2011-05-20 | 2012-01-04 | 郑德明 | Bore spiral line structure of non-corrosive dust collection energy saving chimney |
| CN203905598U (en) * | 2014-04-24 | 2014-10-29 | 湖北省电力勘测设计院 | Steel sleeve chimney |
| CN204152264U (en) * | 2014-10-10 | 2015-02-11 | 中国能源建设集团安徽省电力设计院 | A kind of Chimney in Fossil Power Plant access path |
| CN108678422A (en) * | 2018-05-29 | 2018-10-19 | 五冶集团上海有限公司 | The method for dismounting of steel stack |
| CN210239293U (en) * | 2019-03-11 | 2020-04-03 | 青岛武晓集团股份有限公司 | Torch tower with guide rail |
-
2021
- 2021-07-12 CN CN202110785703.XA patent/CN113445776A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141083A (en) * | 1997-11-07 | 1999-05-25 | Shuichi Matsuoka | Chimney-and-spiral staircase |
| CN202100044U (en) * | 2011-05-20 | 2012-01-04 | 郑德明 | Bore spiral line structure of non-corrosive dust collection energy saving chimney |
| CN203905598U (en) * | 2014-04-24 | 2014-10-29 | 湖北省电力勘测设计院 | Steel sleeve chimney |
| CN204152264U (en) * | 2014-10-10 | 2015-02-11 | 中国能源建设集团安徽省电力设计院 | A kind of Chimney in Fossil Power Plant access path |
| CN108678422A (en) * | 2018-05-29 | 2018-10-19 | 五冶集团上海有限公司 | The method for dismounting of steel stack |
| CN210239293U (en) * | 2019-03-11 | 2020-04-03 | 青岛武晓集团股份有限公司 | Torch tower with guide rail |
Non-Patent Citations (1)
| Title |
|---|
| 宏顺建设工程有限公司: "来看看烟囱旋转梯是如何制作安装的", 《百度》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210928 |