CN113137072B - Construction method of high-altitude track mobile steel platform - Google Patents
Construction method of high-altitude track mobile steel platform Download PDFInfo
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- CN113137072B CN113137072B CN202110401783.4A CN202110401783A CN113137072B CN 113137072 B CN113137072 B CN 113137072B CN 202110401783 A CN202110401783 A CN 202110401783A CN 113137072 B CN113137072 B CN 113137072B
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/167—Tools or apparatus specially adapted for working-up plates, panels or slab shaped building elements
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
- E04G3/32—Hoisting devices; Safety devices
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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
- E04G5/00—Component parts or accessories for scaffolds
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/08—Scaffold boards or planks
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
- E04G5/145—Toe boards therefor
Abstract
The invention discloses a construction method of a high-altitude track moving steel platform, which comprises the following steps: installing a track system, installing a walking steel bracket, installing a steel operating platform, hoisting a walking steel platform and constructing a cornice. The invention not only can satisfy the stacked installation and construction of the cornice honeycomb plate, but also can lead the working platform to walk on the track along the appointed direction under the traction of external force, and simultaneously can cross over the steel beam of the cornice steel structure in the walking process, ensure that the working platform can shift without being dismantled, complete the operation of different construction areas on the same track, simultaneously use light and novel materials, have low manufacturing cost, and are less than the use cost of scaffolds and automobile cranes.
Description
Technical Field
The invention relates to a construction method of a high-altitude track moving steel platform.
Background
The existing building is located in a valley, the terrain is complex, meanwhile, the eaves honeycomb plate of the building body extends outwards from the wall surface of the main structure and is more than 3 meters, the eaves honeycomb plate is in a stacked state and cannot adopt a unit type installation mode, the site is not provided with integral assembling and hoisting conditions and is not provided with integral hoisting conditions, meanwhile, the building site is not hardened outside a drainage ditch all around, the terrain fluctuates greatly all around, the real side is close to a hillside, the empty side is provided with a large slope, and a floor type full hall scaffold cannot be built.
Disclosure of Invention
The invention aims to provide a technical scheme of a construction method of a movable steel platform of an overhead rail, aiming at the defects in the prior art, the construction method has simple steps, can meet the requirement of the overlapping-stage installation construction of cornice honeycomb plates, can lead a working platform to walk on the rail along the appointed direction under the traction of external force, and can cross over a steel beam of the cornice steel structure in the walking process, ensure that the working platform can move without being dismantled, complete the operation of different construction areas on the same rail, simultaneously use light and novel materials, have low manufacturing cost and are less than the use cost of scaffolds and automobile cranes.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of a high-altitude track moving steel platform is characterized by comprising the following steps:
1) rail system installation
a. Firstly, mounting a cornice steel structure, and checking and accepting;
b. fixing the rails with the cornice steel structure in a spot welding mode to ensure that the rails are installed in parallel, wherein the parallel distance between the rails is 3-4 m;
c. then, the cross intersection of the track is penetrated, the end part of the track is blocked by a steel plate with the thickness of 5mm, and a supporting steel pipe is additionally arranged at the corner part of the track;
2) walking steel bracket installation
a. Firstly, processing corresponding main arm beams and secondary beams according to design requirements, placing the two main arm beams in parallel, welding the secondary beams between the two main arm beams, simultaneously welding the secondary beams between the two adjacent secondary beams for reinforcing, removing rust on a welding seam, and brushing red lead anti-rust paint for two times and silver powder paint for one time;
b. then processing corresponding upper bracket columns according to design requirements, vertically welding the two upper bracket columns at set positions on the top surface of the main arm beam to ensure that the two upper bracket columns are parallel to each other, installing a fixed pulley device along the top of each upper bracket column, installing first hanging devices on two sides of the top surface of the main arm beam, and connecting the first hanging device on one side to the first hanging device on the other side by bypassing the fixed pulley devices through a guy cable;
c. then, processing corresponding lower support columns according to design requirements, welding the lower support columns on the bottom surface of the main arm beam in parallel, simultaneously welding secondary beams between the two lower support columns on the same side and between the two lower support columns on the opposite side, respectively welding connecting columns between the upper secondary beam and the lower secondary beam, and between the upper main arm beam and the lower secondary beam, derusting a weld joint, and brushing red lead anti-rust paint for a second way and silver powder paint for a first way;
d. installing a front hanging component along the front end of the main arm beam, wherein the front hanging component is a steel plate with the thickness of 12-15 mm and is provided with a stainless steel bolt group, lining a steel pipe core sleeve with the thickness of 4-6 mm along the square passage of the main arm beam, the length of the front hanging component is 300-350 mm, fixing the front hanging component on the main arm beam by using an M18-150 stainless steel bolt group, installing a rear hanging component along the rear end of the main arm beam, and welding the rear hanging component on the main arm beam in a riding manner, wherein the length of the rear hanging component is 400-450 mm, the thickness of the rear hanging component is 12 mm;
e. finally, a walking caster is arranged along the bottom of the lower bracket column;
3) steel operating platform installation
a. Firstly, manufacturing a corresponding main steel beam and a corresponding secondary steel beam according to design requirements, punching one end of the secondary steel beam, fixing the secondary steel beam with a connecting steel plate by using a stainless steel bolt, welding the connecting steel plate on the main steel beam, punching the other end of the secondary steel beam, fixing the secondary steel beam with the connecting steel plate by using the stainless steel bolt, welding the connecting steel plate with the other secondary steel beam, welding the main steel beam and the secondary steel beam end to form a rectangular structure, positioning the secondary steel beam at the inner side of the rectangular structure, derusting a welding seam, brushing red lead anti-rust paint for two times, and brushing silver powder paint for one time;
b. then, laying a platform bottom plate on the main steel beam and the secondary steel beam;
c. welding a second hanging device along the set position of the main steel beam to enable the second hanging device to correspond to the front hanging component and the rear hanging component;
d. finally, installing a guardrail along the top surface of the main steel beam, wherein the height of the guardrail is changed along with the modeling of the cornice when the guardrail is installed, and the height of the guardrail is not less than 1.2 m;
4) walking steel platform hoist and mount
a. Firstly, hoisting an assembled walking steel support into a rail through a crane, opening a brake on a walking caster after the walking steel support is installed, installing an anti-overturning device of the walking steel support, and tightly binding the walking steel support and a cornice steel structure by using a steel wire rope;
b. then synchronously hoisting the steel operating platform by using 2 automobile cranes, wherein during hoisting, the steel operating platform is tried to be hoisted for three times, and is synchronously hoisted after meeting hoisting requirements through strict check;
c. when the steel operating platform is hung to a preset position below the cornice, the inner side lifting hook is lifted upwards, the outer side lifting hook is lowered downwards, the speed is controlled, the steel operating platform is adjusted to be in a horizontal state, the height of the steel operating platform is measured by a marker post, the steel operating platform is gradually adjusted to be in a designed height and kept water, and the steel operating platform is kept still until a sling for hanging the steel operating platform is installed;
d. after the steel operating platform is lifted in place, sending an installer to hang the slings, tightly binding the steel wire ropes by using wire tighteners of the slings, then checking the stress states of 8 slings below lifting hooks of the automobile crane, and withdrawing the automobile crane after the adjustment of the slings at four lifting points is completed;
5) cornice construction
a. A constructor stands on the steel operating platform, installs the honeycomb plate decorative framework and the honeycomb plate panel of the cornice, and moves to the next construction area for construction after construction in one area is finished and spans the steel beam of the cornice steel structure through the walking type steel platform;
b. and after the construction is finished, the walking steel platform is dismantled.
The construction method has simple steps, can meet the requirement of installation and construction of cornice honeycomb plates in a laminated stage, can enable the working platform to walk on the track along the appointed direction under the traction of external force, can cross over the steel beam of the cornice steel structure in the walking process, ensures that the working platform can move without being dismantled, completes the operation of different construction areas on the same track, simultaneously uses light and novel materials, has low cost, and is less than the use cost of scaffolds and automobile cranes.
Further, the stiffening steel plate with the thickness of 8-10 mm is welded at the joint of the main arm beam and the secondary beam and the joint of the main arm beam and the upper support column in the step 2), and the stiffening steel plate greatly improves the connection strength and stability between the main arm beam, the secondary beam and the upper support column.
Further, 2 groups of universal pulleys and 2 groups of directional pulleys are arranged on the walking casters in the step 2), 2 pulleys with 2 tons of load are arranged on each group of walking casters, 1 is mainly used, and 1 is standby.
Further, the distance between two slings connected to the rear hanging component in the step 2) is 400mm, when the front sling touches the cornice steel structure, the front sling is taken off, the rear sling is stressed, after the walking steel platform spans the cornice steel structure, the front sling is hung, the rear sling is taken off, the front sling is stressed, and the walking steel platform can flexibly slide on the whole straight line surface.
Further, the platform bottom plate in the step 3) adopts a light steel springboard, two ends of the light steel springboard are placed on the main steel beam and the secondary steel beam, and a steel square tube is additionally arranged in the middle of the light steel springboard and used for supporting the light steel springboard.
Further, the guardrail in step 3) includes that the guardrail is responsible for, guardrail secondary pipe and baseboard, the guardrail is responsible for and connects main girder steel, the guardrail secondary pipe evenly locates between guardrail is responsible for and the main girder steel, the baseboard is located on the top surface of main girder steel, through the guardrail be responsible for with the guardrail secondary pipe's design, security and reliability when steel operation platform uses can be improved, the guardrail is responsible for and is 50X 5mm steel square pipe, the height in the outside is 1.2m, the second grade height is 800mm, the third season height is 500mm, set up according to the principle of not touching the decoration panel, the guardrail secondary pipe is 20X 2mm steel square pipe, the baseboard is 20mm plank thick, the height is 200mm, the baseboard is firmly bound with the guardrail is responsible for or guardrail secondary pipe with phi 1.2's zinc-plated iron wire.
Further, the distance between the anti-overturning device bottom stopping bolt in the step 4) and the cornice steel structure is 10-20 mm.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the construction method has simple steps, can meet the requirement of installation and construction of cornice honeycomb plates in a laminated stage, can enable the working platform to walk on the track along the appointed direction under the traction of external force, can cross over the steel beam of the cornice steel structure in the walking process, ensures that the working platform can move without being dismantled, completes the operation of different construction areas on the same track, simultaneously uses light and novel materials, has low cost, and is less than the use cost of scaffolds and automobile cranes.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view illustrating the installation of a walking steel platform in the construction method of the high-altitude rail mobile steel platform according to the present invention;
FIG. 2 is a schematic structural view of a walking steel support in the present invention;
FIG. 3 is a schematic view of the connection between the secondary beam and the primary arm beam according to the present invention;
FIG. 4 is a schematic view of the front hanger assembly of the present invention;
FIG. 5 is a schematic view of the installation of the rear hanger member of the present invention;
FIG. 6 is a schematic structural view of a steel operation platform according to the present invention;
FIG. 7 is a schematic view of the connection between the primary and secondary steel beams of the present invention.
In the figure: 1-a walking steel support; 2-a steel operating platform; 3-a sling; 4-a pull cable; 5-main arm beam; 6-secondary beam; 7-upper bracket column; 8-a walking caster; 9-a fixed pulley device; 10-a front hanging member; 11-rear hanging member; 12-a stiffening steel plate; 13-lower support posts; 14-cornice steel construction; 15-track; 16-steel tube core sleeve; 17-connecting steel plates; 18-stainless steel bolts; 19-a main steel beam; 20-time steel beam; 21-a guardrail; 22-platform floor; 23-a second hanger; 24-guardrail main tube; 25-guardrail secondary pipe; 26-skirting board; 27-a first hanger; 28-adapter column.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
As shown in fig. 1 to 7, the construction method for the high-altitude rail mobile steel platform of the present invention comprises the following steps:
1) rail 15 system installation
a. Firstly, mounting the cornice steel structure 14 and checking and accepting;
b. then fixing the rails 15 with the cornice steel structure 14 in a spot welding mode, ensuring that the rails 15 are installed in parallel, and ensuring that the parallel distance between the rails 15 is 3-4 m;
c. then, the cross intersection of the track 15 is penetrated, the end part of the track 15 is blocked by a steel plate with the thickness of 5mm, and a supporting steel pipe with the thickness of 200mm to 250mm is additionally arranged at the corner part of the track;
2) installation of walking steel bracket 1
a. Firstly, processing corresponding main arm beams 5 and secondary beams 6 according to design requirements, placing the two main arm beams 5 in parallel, welding the secondary beams 6 between the two main arm beams 5, and welding the secondary beams 6 between the two adjacent secondary beams 6 for reinforcing, derusting a welding seam, and brushing red lead anti-rust paint for two times and silver powder paint for one time;
b. then processing corresponding upper bracket columns 7 according to design requirements, vertically welding the two upper bracket columns 7 at set positions on the top surface of the main arm beam 5 to ensure that the two upper bracket columns 7 are parallel to each other, installing a fixed pulley device 9 along the top of each upper bracket column 7, installing first hanging devices 27 along two sides of the top surface of the main arm beam 5, and connecting the first hanging devices 27 on one side to the first hanging devices 27 on the other side by winding the fixed pulley devices 9 through inhaul cables 4; the joint of main armed roof beam 5 and secondary beam 6, the joint of main armed roof beam 5 and upper bracket post 7 welds stiffening steel sheet 12 that thickness is 8 ~ 10mm, and stiffening steel sheet 12 has improved joint strength and stability between main armed roof beam 5, secondary beam 6 and the upper bracket post 7 greatly.
c. Then, corresponding lower support columns 13 are processed according to design requirements, the lower support columns 13 are welded on the bottom surface of the main arm beam 5 in parallel, meanwhile, the secondary beams 6 are welded between the two lower support columns 13 on the same side and between the two lower support columns 13 on the opposite side, then, the connecting columns 28 are respectively welded between the upper secondary beam 6 and the lower secondary beam 6, the main arm beam 5 above and the secondary beam 6 below, the weld joints are subjected to rust removal, and red lead anti-rust paint is brushed for the second time, and silver powder paint is brushed for the first time;
d. the front hanging component 10 is installed along the front end of the main arm beam 5, the front hanging component 10 is made of a steel plate with the thickness of 12-15 mm and is provided with a stainless steel bolt 18 group, a steel pipe core sleeve 16 with the thickness of 4-6 mm is lined in the square passage of the main arm beam 5, the length is 300-350 mm, then the front hanging component 10 is fixed on the main arm beam 5 through the M18-150 stainless steel bolt 18 group, the rear hanging component 11 is installed along the rear end of the main arm beam 5, the length of the rear hanging component 11 is 400-450 mm, the thickness is 12mm, and the front hanging component is welded on the main arm beam 5 in a riding mode; the interval of two slings 3 connected on the rear hanging component 11 is 400mm, when the front sling 3 touches the cornice steel structure 14, the front sling 3 is taken off, the rear sling 3 is stressed, after the walking type steel platform crosses the cornice steel structure 14, the front sling 3 is hung, the rear sling 3 is taken off, the front sling 3 is stressed, and the walking type steel platform can flexibly slide on the whole straight line surface.
e. Finally, a walking caster 8 is arranged along the bottom of the lower bracket column 13; 2 groups of universal pulleys and 2 groups of directional pulleys are arranged on the walking caster 8, 2 pulleys with 2 tons of load are arranged on each group of walking caster 8, 1 is mainly used, 1 is standby, through the design of the universal pulleys and the directional pulleys, the walking caster can not only move along a straight line, but also turn, the use flexibility of the walking steel platform is improved, and the design of the two pulleys can ensure that the walking caster is used normally when one is damaged.
3) Steel operation platform 2 installation
a. Firstly, manufacturing a corresponding main steel beam 19 and a corresponding secondary steel beam 20 according to design requirements, punching one end of the secondary steel beam 20, fixing the secondary steel beam 20 and a connecting steel plate 17 by using a stainless steel bolt 18, welding the connecting steel plate 17 on the main steel beam 19, punching the other end of the secondary steel beam 20, fixing the secondary steel beam 20 and the connecting steel plate 17 by using the stainless steel bolt 18, welding the connecting steel plate 17 and the other secondary steel beam 20, welding the main steel beam 19 at the head and the tail to form a rectangular structure, positioning the secondary steel beam 20 at the inner side of the rectangular structure, removing rust on a welding seam, brushing red lead anti-rust paint for two times and brushing silver powder paint for one time;
b. then laying a platform bottom plate 22 on the main steel beam 19 and the secondary steel beam 20; the platform bottom plate 22 is made of a light steel springboard, two ends of the light steel springboard are placed on the main steel beam 19 and the secondary steel beam 20, and a steel square tube is additionally arranged in the middle of the light steel springboard and used for supporting the light steel springboard.
c. Then welding a second hanging device 23 along the set position of the main steel beam 19, so that the second hanging device 23 corresponds to the front hanging component 10 and the rear hanging component 11;
d. finally, installing a guardrail 21 along the top surface of the main steel beam 19, wherein when the guardrail 21 is installed, the height of the guardrail 21 is changed along with the modeling of the cornice, and the height of the guardrail 21 is not less than 1.2 m; the guardrail 21 comprises a guardrail main pipe 24, a guardrail secondary pipe 25 and a skirting board 26, the guardrail main pipe 24 is connected with the main steel beam 19, the guardrail secondary pipe 25 is uniformly arranged between the guardrail main pipe 24 and the main steel beam 19, the skirting board 26 is arranged on the top surface of the main steel beam 19, the guardrail main pipe 24 and the guardrail secondary pipe 25 are designed, the safety and reliability of the steel operating platform 2 in use can be improved, the guardrail main pipe 24 is a 50 x 5mm square steel pipe, the outermost side height is 1.2m, the second level height is 800mm, the third level height is 500mm, the guardrail secondary pipe 25 is arranged according to the principle of not touching a decoration panel, the skirting board 26 is a 20 x 2mm square steel pipe, the height is 200mm, and the skirting board 26 is firmly bound with the guardrail main pipe 24 or the guardrail secondary pipe 25 by a phi 1.2 galvanized iron wire.
4) Walking type steel platform hoisting
a. Firstly, hoisting an assembled walking steel support 1 into a track 15 by a crane, opening a brake on a walking caster 8 after the walking steel support 1 is installed, installing an anti-overturning device of the walking steel support 1, and tightly binding the walking steel support 1 and a cornice steel structure 14 by using a steel wire rope; the distance between the retaining bolt at the bottom of the overturn preventing device and the cornice steel structure 14 is 10-20 mm.
b. Then synchronously hoisting the steel operating platform 2 by using 2 automobile cranes, wherein during hoisting, the steel operating platform is tried to be hoisted for three times, and the steel operating platform is synchronously hoisted after meeting hoisting requirements through strict check;
c. when the steel operating platform 2 is hung to a preset position below the cornice, the inner side lifting hook is lifted upwards, the outer side lifting hook is lowered downwards, the speed is controlled, the steel operating platform 2 is adjusted to be in a horizontal state, at the moment, the height of the steel operating platform 2 is measured by a marking pole, the steel operating platform 2 is gradually adjusted to be in a designed height and kept level, and the steel operating platform is kept still until a sling 3 for hanging the steel operating platform 2 is installed;
d. after the steel operating platform 2 is lifted in place, sending an installer to hang the slings 3, binding the steel wire ropes by using tighteners of the slings 3, then checking the stress states of 8 slings 3 below lifting hooks of the automobile crane, and withdrawing the automobile crane after the slings 3 at four lifting points are adjusted;
5) cornice construction
a. A constructor stands on the steel operating platform 2 to install the honeycomb plate decorative framework and the honeycomb plate panel of the cornice, and after construction in one area is finished, the constructor spans the steel beam of the cornice steel structure 14 through the walking type steel platform and moves to the next construction area to carry out construction;
b. and after the construction is finished, the walking steel platform is dismantled.
The construction method has simple steps, can meet the requirement of installation and construction of cornice honeycomb plates in a laminated stage, can enable the working platform to walk on the track 15 along the appointed direction under the traction of external force, can cross over the steel beam of the cornice steel structure 14 in the walking process, ensures that the working platform can move without being dismantled, completes the operation of different construction areas on the same track 15, simultaneously uses light and novel materials, has low cost, and is less than the use cost of scaffolds and automobile cranes.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.
Claims (7)
1. A construction method of a high-altitude track moving steel platform is characterized by comprising the following steps:
1) rail system installation
a. Firstly, mounting a cornice steel structure, and checking and accepting;
b. fixing the rails with the cornice steel structure in a spot welding mode to ensure that the rails are installed in parallel, wherein the parallel distance between the rails is 3-4 m;
c. then, the cross intersection of the rail at the corner part is penetrated, the end part of the rail is blocked by a steel plate with the thickness of 5mm, and a supporting steel pipe is additionally arranged at the corner part;
2) walking steel bracket installation
a. Firstly, processing corresponding main arm beams and secondary beams according to design requirements, placing the two main arm beams in parallel, welding the secondary beams between the two main arm beams, simultaneously welding the secondary beams between the two adjacent secondary beams for reinforcing, removing rust on a welding seam, and brushing red lead anti-rust paint for two times and silver powder paint for one time;
b. then processing corresponding upper bracket columns according to design requirements, vertically welding the two upper bracket columns at set positions on the top surface of the main arm beam to ensure that the two upper bracket columns are parallel to each other, installing a fixed pulley device along the top of each upper bracket column, installing first hanging devices on two sides of the top surface of the main arm beam, and connecting the first hanging device on one side to the first hanging device on the other side by bypassing the fixed pulley devices through a guy cable;
c. then, processing corresponding lower support columns according to design requirements, welding the lower support columns on the bottom surface of the main arm beam in parallel, simultaneously welding secondary beams between the two lower support columns on the same side and between the two lower support columns on the opposite side, respectively welding connecting columns between the upper secondary beam and the lower secondary beam, and between the upper main arm beam and the lower secondary beam, derusting a weld joint, and brushing red lead anti-rust paint for a second way and silver powder paint for a first way;
d. installing a front hanging component along the front end of the main arm beam, wherein the front hanging component is a steel plate with the thickness of 12-15 mm and is provided with a stainless steel bolt group, lining a steel pipe core sleeve with the thickness of 4-6 mm along the square passage of the main arm beam, the length of the steel pipe core sleeve is 300-350 mm, then fixing the front hanging component on the main arm beam by using the stainless steel bolt group, installing a rear hanging component along the rear end of the main arm beam, the length of the rear hanging component is 400-450 mm, the thickness of the rear hanging component is 12mm, and welding the rear hanging component on the main arm beam in a horse riding manner;
e. finally, a walking caster is arranged along the bottom of the lower bracket column;
3) steel operating platform installation
a. Firstly, manufacturing a corresponding main steel beam and a corresponding secondary steel beam according to design requirements, punching one end of the secondary steel beam, fixing the secondary steel beam with a connecting steel plate by using a stainless steel bolt, welding the connecting steel plate on the main steel beam, punching the other end of the secondary steel beam, fixing the secondary steel beam with the connecting steel plate by using the stainless steel bolt, welding the connecting steel plate with the other secondary steel beam, welding the main steel beam and the secondary steel beam end to form a rectangular structure, positioning the secondary steel beam at the inner side of the rectangular structure, derusting a welding seam, brushing red lead anti-rust paint for two times, and brushing silver powder paint for one time;
b. then, laying a platform bottom plate on the main steel beam and the secondary steel beam;
c. welding a second hanging device along the set position of the main steel beam to enable the second hanging device to correspond to the front hanging component and the rear hanging component;
d. finally, installing a guardrail along the top surface of the main steel beam, wherein the height of the guardrail is changed along with the modeling of the cornice when the guardrail is installed, and the height of the guardrail is not less than 1.2 m;
4) walking steel platform hoist and mount
a. Firstly, hoisting an assembled walking steel support into a rail through a crane, opening a brake on a walking caster after the walking steel support is installed, installing an anti-overturning device of the walking steel support, and tightly binding the walking steel support and a cornice steel structure by using a steel wire rope;
b. then synchronously hoisting the steel operating platform by using 2 automobile cranes, wherein during hoisting, the steel operating platform is tried to be hoisted for three times, and is synchronously hoisted after meeting hoisting requirements through strict check;
c. when the steel operating platform is hung to a preset position below the cornice, the inner side lifting hook is lifted upwards, the outer side lifting hook is lowered downwards, the speed is controlled, the steel operating platform is adjusted to be in a horizontal state, the height of the steel operating platform is measured by a marker post at the moment, the steel operating platform is gradually adjusted to be in a designed height and kept horizontal, and the steel operating platform is static until a sling for hanging the steel operating platform is installed;
d. after the steel operating platform is lifted in place, sending an installer to hang the slings, binding the steel wire ropes by using tighteners of the slings, then lowering lifting hooks of the automobile crane, checking the stress state of 8 slings, and withdrawing the automobile crane after the adjustment of the slings at four lifting points is finished;
5) cornice construction
a. A constructor stands on the steel operating platform, installs the honeycomb plate decorative framework and the honeycomb plate panel of the cornice, and moves to the next construction area for construction after construction in one area is finished and spans the steel beam of the cornice steel structure through the walking type steel platform;
b. and after the construction is finished, the walking steel platform is dismantled.
2. The construction method of the high-altitude rail moving steel platform according to claim 1, characterized in that: and (3) welding stiffening steel plates with the thickness of 8-10 mm at the joints of the main arm beam and the secondary beams and the joints of the main arm beam and the upper support columns in the step 2).
3. The construction method of the high-altitude rail moving steel platform according to claim 1, characterized in that: the walking casters in the step 2) are provided with 2 groups of universal pulleys and 2 groups of directional pulleys, each group of walking casters is provided with 2 pulleys with 2 tons of load, 1 is mainly used, and 1 is standby.
4. The construction method of the high-altitude rail moving steel platform according to claim 1, characterized in that: the distance between two slings connected to the rear hanging component in the step 2) is 400mm, when the front sling touches the cornice steel structure, the front sling is taken off, the rear sling is stressed, after the walking type steel platform crosses the cornice steel structure, the front sling is hung, the rear sling is taken off, and the front sling is stressed.
5. The construction method of the high-altitude rail moving steel platform according to claim 1, characterized in that: and 3) adopting a light steel springboard as the platform bottom board, placing two ends of the light steel springboard on the main steel beam and the secondary steel beam, and additionally arranging a steel square pipe in the middle for supporting the light steel springboard.
6. The construction method of the high-altitude rail moving steel platform as claimed in claim 1, wherein: the guardrail in the step 3) comprises a guardrail main pipe, guardrail secondary pipes and skirting boards, wherein the guardrail main pipe is connected with the main steel beams, the guardrail secondary pipes are uniformly arranged between the guardrail main pipe and the main steel beams, and the skirting boards are arranged on the top surfaces of the main steel beams.
7. The construction method of the high-altitude rail moving steel platform according to claim 1, characterized in that: and 4) in the step 4), the distance between the retaining bolt at the bottom of the overturn preventing device and the cornice steel structure is 10-20 mm.
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| CN202110401783.4A CN113137072B (en) | 2021-04-14 | 2021-04-14 | Construction method of high-altitude track mobile steel platform |
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| AU2016266073B1 (en) * | 2015-11-12 | 2017-03-30 | True Power Pty Ltd | A furling crane loading platform |
| CN107060230A (en) * | 2017-05-10 | 2017-08-18 | 中建二局第三建筑工程有限公司 | A kind of oblique outer reverse erecting device of eaves panel of large cantilever and preparation method |
| CN107313586A (en) * | 2017-07-05 | 2017-11-03 | 中国十七冶集团有限公司 | A kind of special-shaped cornice decorative curtain wall mounting platform of building and construction method |
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