CN110905181A - 7-shaped large-angle inner-inclined high-altitude sliding operation platform and construction method thereof - Google Patents
7-shaped large-angle inner-inclined high-altitude sliding operation platform and construction method thereof Download PDFInfo
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- CN110905181A CN110905181A CN201911079668.9A CN201911079668A CN110905181A CN 110905181 A CN110905181 A CN 110905181A CN 201911079668 A CN201911079668 A CN 201911079668A CN 110905181 A CN110905181 A CN 110905181A
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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
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/26—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons specially adapted for working on roofs
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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
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Abstract
An operation platform capable of inclining in a 7-shaped large angle and sliding in high altitude comprises a 7-shaped truss system, rigid limiting support legs and sliding rails; the 7-shaped truss system comprises a horizontal truss, a vertical face crawling ladder and an inclined operation platform; one end of the horizontal truss is fixedly connected with the upper end of the vertical surface ladder stand, and the other end of the horizontal truss is fixedly connected with the rigid limiting supporting leg; the inclined operating platform is connected with the lower end of the vertical surface ladder in an inclined mode, and the inclined angle of the inclined operating platform is consistent with the inclined angle of the roof cornice; the horizontal truss, the vertical surface crawling ladder and the inclined operation platform are connected into an integral rigid structure, and the integral structure is 7-shaped; the slide rail is arranged at the bottom of the horizontal truss. The 7-shaped large-angle inner-inclined high-altitude sliding operating platform can solve the problems of large area, long linearity and high installation height of a roof cornice plate.
Description
Technical Field
The invention relates to a platform for cornice construction, in particular to a 7-shaped large-angle inner-inclined high-altitude sliding operation platform and a construction method thereof.
Background
Along with the progress of scientific technology, newly-built building outer facades are more and more marked, the modeling is complex and various, especially, the building cornice protruding distance is more and more large, great difficulty is brought to building decoration construction, aiming at the cornice with larger protruding, construction measures are mostly cableway type slidable operation platforms, the cableway type slidable operation platforms pull two steel wire ropes on a main body structure below the cornice to be used as tracks for the platforms to slide, and the two ends of the track steel wire ropes are tensioned by hand-hoists (rope tighteners); then constructor stands and carries out aluminum plate installation operation in the platform handling frame, after a district section eaves mouth installation, shifts operation platform to next district section eaves mouth. The cableway operating platform that can slide only is applicable to the big face of structure and installs for the less eave board of arc surface and tip inclination of gentle transition, nevertheless to the eave bottom not the arc surface of gentle transition, the eave tip is the oblique roofing of the great adduction formula of inclination, and cableway operating platform that can slide can not reach the effect parallel with the slope roofing, and there is not balanced state at the platform both ends, and the operation workman operates the difficulty, can not reach the target of effectively accomplishing installation roof boarding.
Disclosure of Invention
Aiming at the installation problems of a roof cornice plate with large area, long linearity, large inclination angle and high installation height, the invention provides a construction technology of an operation platform which is inclined in a 7-shaped large angle and slides in high altitude. Wherein, the 7-shaped truss system can solve the problems of large area, long linearity and high installation height of the roof cornice plate. The rigid limiting supporting leg and the whole body are designed in a 7-shaped manner, so that the safety problem of large-angle inclination of the operating platform can be solved. By solving the two problems, the high-altitude installation of the large-angle inclined large-area long linear roof cornice plate can be realized, and the operation is simple, convenient and quick.
The technical scheme for solving the problems is as follows: an operation platform capable of inclining in a 7-shaped large angle and sliding in high altitude comprises a 7-shaped truss system, rigid limiting support legs and sliding rails; the 7-shaped truss system comprises a horizontal truss, a vertical face crawling ladder and an inclined operation platform; one end of the horizontal truss is fixedly connected with the upper end of the vertical surface ladder stand, and the other end of the horizontal truss is fixedly connected with the rigid limiting supporting leg; the inclined operating platform is connected with the lower end of the vertical surface ladder in an inclined mode, and the inclined angle of the inclined operating platform is consistent with the inclined angle of the roof cornice; the horizontal truss, the vertical surface crawling ladder and the inclined operation platform are connected into an integral rigid structure, and the integral structure is 7-shaped; the sliding rail is arranged at the bottom of the horizontal truss; in a use state, the rigid limiting supporting leg extends into the gutter, is tightly attached to the outer side of the gutter, and is connected with the roof steel framework through the clamping ring; the horizontal truss is located cornice horizontal keel upper portion, the facade cat ladder is located outside the cornice, the slope operation platform is parallel with the inclined plane of cornice fossil fragments to be connected with cornice fossil fragments through wire rope.
The further technical scheme is as follows: the rigid limiting supporting leg is a square frame formed by combining section steel.
The further technical scheme is as follows: the sliding rail is made of round pipes, and the two round pipes are welded at the bottom of the horizontal truss in parallel; the two ends of the circular tube slightly upwarp.
The further technical scheme is as follows: horizontal truss adopts the specification to be 50mm 4mm material Q235B's square tube welding and forms, and the truss specification is: the length of the straight web members is 3600mm, the width of the straight web members is 800mm, the height of the straight web members is 900mm, and the straight web members and the inclined web members with the same specification are arranged at intervals of 1 m.
The further technical scheme is as follows: the slope operation platform adopts the pipe welding that diameter 32mm, 3mm material Q235B of wall thickness become slope operation platform, slope operation platform specification is: the length is 10800mm, the width is 800mm, the height is 900mm, round pipe crossbars are welded at the bottom of the inclined operating platform at intervals of 500mm, round pipes with the diameter of phi 25 and the interval of 1000mm are welded at the upper part, and the round pipe crossbars with the diameter of phi 25 are matched at the side surfaces; the periphery of the bottom of the inclined operating platform is provided with a skirting board made of a color steel plate with the height of 150mm and the thickness of 0.4mm, the bottom of the inclined operating platform is bound and fixed with a wood pedal by adopting support angle steel to form a stepped platform, and the width of the stepped pedal is at least 300 mm.
The other related technical scheme is as follows: the construction method of the 7-shaped large-angle inner-inclined high-altitude sliding operation platform comprises the following construction process flows: A. deepening the operation platform which inclines and slides high altitude in the 7-shaped large angle → B, processing and manufacturing each part of the operation platform which inclines and slides high altitude in the 7-shaped large angle → C, installing the operation platform which inclines and slides high altitude in the 7-shaped large angle → D, safely checking and accepting the operation platform which inclines and slides high altitude in the 7-shaped large angle → E, using the inclined operation platform → F, sliding the operation platform which inclines and slides high altitude in the 7-shaped large angle to the next cornice keel → G integrally, and disassembling the operation platform.
The further technical scheme is as follows: and C, a process flow for installing the 7-shaped large-angle inner-inclined high-altitude sliding operation platform comprises the following steps: computer simulation arrangement track diagram → field positioning → hoisting → fine tuning → operation platform fixing → safety acceptance; the specific operation is as follows:
and (3) field positioning: determining the installation number and the installation positions of the operating platforms according to engineering requirements, and simulating, arranging and positioning by using a computer to ensure the accuracy of the installation positions during field installation;
hoisting: hoisting can be carried out only after the operation platform is qualified, and the theodolite controls the positioning point of the operation platform during hoisting; after the operation platform is qualified, adopting an integral hoisting mode, using a 25t truck crane to be matched with a winch to be hoisted to a construction height, and placing the rigid limiting supporting leg at the end part of the horizontal truss into the gutter to be tightly attached to the outer side of the gutter; if the tower crane and the crane can not be installed, the tower crane and the crane can be firstly hoisted to nearby positions and then slide to the installation position by utilizing self-provided slide rails; the operation platform cannot collide with a building in the lifting process, and if the operation platform meets a protruding part, personnel can be temporarily arranged at the protruding part to push the operation platform away in a matched mode so as to avoid collision; in the lifting process of the operating platform, the steel wire rope must be kept vertical to the ground, and the steel wire rope is not inclined to pull;
the top surface of the inclined operating platform at the cornice inclined surface part keeps an interval of about 500mm with the bottom surface of the keel, and the combined angle between the vertical surface ladder stand at the upper part of the operating platform and the inclined operating platform at the lower part is processed according to the actual inclined angle of the cornice, so that the inclined operating platform inclined surface is parallel to the inclined surface of the cornice keel after the operating platform is in place, and the interval between the high end and the low end of the operating platform and the cornice keel bracket is convenient to adjust;
fine adjustment: then, mounting, controlling and fine-adjusting the transverse direction and the longitudinal direction by using a hoist;
fixing an operation platform: after adjustment is finished, the upper horizontal truss and the cornice keel are firstly tensioned and fixed by using a chain block, then the rigid limiting supporting leg is fixedly connected with the roof steel framework by using a clamping ring, and then four pulling points at the lower end and the middle part of the inclined operating platform at the lower part are pulled to be connected to a roof net rack ball node or the cornice keel above the inclined operating platform by using a steel wire rope, so that the block used in hoisting can be picked up; the upper end of the steel wire rope is tightened by a 5T hand-operated hoist, and the tightness of the steel wire rope is adjusted in real time according to the field use condition; the steel wire rope winding part is padded with a rubber mat to protect the anti-corrosion coating and the fire-proof coating of the wound spherical joint of the roof net rack or the cornice keel; after being tightened, the rope heads of the steel wire ropes are fixedly locked with the spherical nodes of the net rack of the roof or the cornice keels, and then the hoists are loosened; the hoist is not required to be too tight when the steel wire rope is tightened, so that the steel wire rope is prevented from being subjected to too large tension; the other end of the steel wire rope is locked by at least 3 500kg lock catches, the lock catches are arranged at intervals of at least 300mm in a staggered mode, the positions of the lock catches correspond to marking lines, whether the lock catches are loose or not is checked regularly, and a safety knot is arranged at the rope end position.
The further technical scheme is as follows: e, use of the inclined operation platform: after the operation platform is installed, the operating personnel enter the inclined operation platform by the horizontal rod arranged inside the upper eaves horizontal truss to install the eaves plate.
The further technical scheme is as follows: and F, integrally sliding the 7-shaped large-angle inner inclined high-altitude sliding operating platform to the next cornice keel: after the installation operation is accomplished in a position of operation platform, the operation personnel untie ligature slope operation platform's wire rope, personnel leave operation platform and get into cornice gutter, loosen the spacing landing leg of rigidity, with the help of setting up the back chain on cornice fossil fragments system and remove whole operation platform to next operation district, cornice fossil fragments system upper portion is drawn and is established twice phi 14 wire rope and is used for limiting operation platform's truss perk that makes progress, operation platform takes one's place the back, horizontal truss passes through the chain block and is fixed with fossil fragments, the spacing landing leg of rigidity passes through snap ring and roofing steel skeleton fixed connection, lower part slope operation platform passes through wire rope and fixes with top roofing rack ball joint or cornice fossil fragments, set up multichannel insurance limit measure.
Due to the adoption of the technical scheme, compared with the prior art, the 7-shaped large-angle inner-inclined high-altitude sliding operation platform and the construction method thereof have the following beneficial effects:
1. the problem of large-angle inclination of the operating platform is solved by the rigid limiting supporting leg and the design that the whole body is in a 7 shape. The rigid limiting supporting legs are arranged, the supporting legs penetrate into the gutter and abut against the outer side surface of the gutter to hook the side wall of the gutter to prevent the whole operating platform from sliding outwards, the rigid limiting supporting legs and the 7-shaped truss system are welded into an integral rigid structure, the whole operating platform is limited from moving outwards, the whole operating platform is prevented from being tipped over, and the safety problem of the whole operating platform is guaranteed.
2. Through the slide rail design of pipe, can solve the problem that operation platform removed on the big, linear long roofing cornice board of area. The profile steel slide rail is used as a sliding rail of the platform at the upper cornice, the platform slides on the horizontal keel of the upper cornice, and two ends of the slide rail slightly upwarp to avoid collision with the horizontal keel in the sliding process. The whole operation platform horizontally moves to the position where the cornice aluminum plate needs to be installed along the sliding rail by means of a hoist (pulled by a hand or electrically).
3. The inclination angle of the inclined operating platform is consistent with that of the roof cornice, and the installation quality of the cornice plate is improved. By using the inclined operating platform, the accurate adjustment of the positioning of the roof cornice plate is easy to operate and control, and the mounting quality of the roof large-angle inclined cornice plate is improved.
4. Can increase this operation platform's quantity according to on-the-spot actual construction progress plan, can install roofing eaves mouth honeycomb aluminum plate simultaneously, be applicable to extremely that the area is super large, the eaves mouth construction of the overlength of length, improve the efficiency of construction greatly for the construction progress.
5. The construction equipment and materials are simple and easy to obtain and easy to realize, and meanwhile, the mechanical bench cost is reduced, so that the construction method is economic and environment-friendly.
Therefore, the technical problem of mounting the large-area, long-linear, high-altitude and large-angle inclined roof cornice plate is solved.
The technical features of the 7-shaped large-angle inner-inclined high-altitude sliding operation platform and the construction method thereof will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1: the invention relates to a three-dimensional view of an operation platform which inclines in a 7-shaped large angle and slides aloft;
FIG. 2: the invention discloses a first use and installation diagram of a 7-shaped large-angle inner-inclined high-altitude sliding operation platform;
FIG. 3: the invention provides a second schematic diagram for using and installing a 7-shaped large-angle inclined high-altitude sliding operation platform.
The method comprises the following steps of 1-horizontal truss, 2-vertical surface ladder stands, 3-inclined operation platform, 4-rigid limiting supporting legs, 5-sliding rails, 6-snap rings, 7-steel wire ropes, 8-cornice keels, 9-gutter, 10-roofing steel structure net racks, 11-cornice and 12-net rack ball nodes.
Detailed Description
Example 1:
an operation platform capable of inclining in a 7-shaped large angle and sliding at high altitude, as shown in figures 1 to 3, comprises a 7-shaped truss system, rigid limiting support legs 4 and slide rails 5; the 7-shaped truss system comprises a horizontal truss 1, a vertical face ladder stand 2 and an inclined operating platform 3; one end of the horizontal truss 1 is fixedly connected with the upper end of the vertical surface ladder stand 2, and the other end of the horizontal truss is fixedly connected with the rigid limiting supporting leg 4; the inclined operating platform 3 is obliquely connected with the lower end of the vertical surface ladder stand 2, and the inclination angle of the inclined operating platform 3 is consistent with that of a roof cornice; the horizontal truss 1, the vertical surface ladder stand 2 and the inclined operating platform 3 are connected into an integral rigid structure, and the integral structure is 7-shaped; the slide rail 5 is arranged at the bottom of the horizontal truss 1; in a use state, the rigid limiting supporting leg 4 extends into the gutter 9, is tightly attached to the outer side of the gutter, and is connected with a roof steel framework (a roof steel structure net rack 10) through a U-shaped snap ring 6; for example, four U-shaped snap rings 6 are arranged on the upper part and the lower part of the rigid limiting supporting leg to fixedly connect the rigid limiting supporting leg with the roof steel framework; horizontal truss is located 11 horizontal keel upper portions of cornice, the facade cat ladder is located outside the cornice, slope operation platform is parallel with cornice fossil fragments 8's inclined plane to be connected with cornice fossil fragments 8 through wire rope 7. The upper part of the steel wire rope hooks the cornice keel of the structure, and the lower part of the steel wire rope tensions the inclined operating platform. Two lifting points are respectively arranged at the lower end and the middle part of the inclined operating platform 3 and are used as stable drawknots during platform construction. Each lifting point is pulled and tied to a roof net rack ball joint 12 or a cornice keel 8 above the platform by using a steel wire rope not less than phi 14 as a main stress point during platform construction.
In this embodiment, the 7-shaped truss system is also used as a passageway for passengers to get on and off. Adopt two pipe parallel weld under it at the bottom of the horizontal truss of upper portion in "7" font truss system, as the platform at the track that slides of cornice, slide on the horizontal fossil fragments of cornice, the slide rail both ends upwarp slightly, avoid sliding the in-process and collide with horizontal fossil fragments. The whole operation platform horizontally moves to the position where the cornice aluminum plate needs to be installed along the sliding rail by means of a hoist (pulled by a hand or electrically).
The rigidity limiting supporting leg is a square frame formed by combining section steel, the square frame penetrates into the gutter, the supporting leg is tightly leaned on the side face of the gutter, the rigidity limiting supporting leg hooks the side wall of the gutter to prevent the platform from sliding outwards, the rigidity limiting supporting leg and the 7-shaped truss system are welded into an integral rigid structure, the platform is limited from moving outwards, the platform is prevented from being tipped, and the stability of connection of the platform in the using process is ensured.
Horizontal truss adopts the specification to be 50mm 4mm material Q235B's square tube welding and forms, and the truss specification is: the length of the straight web members is 3600mm, the width of the straight web members is 800mm, the height of the straight web members is 900mm, and the straight web members and the inclined web members with the same specification are arranged at intervals of 1 m.
The slope operation platform adopts the pipe welding that diameter 32mm, 3mm material Q235B of wall thickness become slope operation platform, slope operation platform specification is: the length is 10800mm, the width is 800mm, the height is 900mm, round pipe crossbars are welded at the bottom of the inclined operating platform at intervals of 500mm, round pipes with the diameter of phi 25 and the interval of 1000mm are welded at the upper part, and the round pipe crossbars with the diameter of phi 25 are matched at the side surfaces; the periphery of the bottom of the inclined operating platform is provided with a skirting board made of a color steel plate with the height of 150mm and the thickness of 0.4mm, the bottom of the inclined operating platform is bound and fixed with a wood pedal by adopting support angle steel to form a stepped platform, and the width of the stepped pedal is at least 300 mm. The upper end part of the inclined operating platform and the lower end part of the vertical face ladder stand 2 are welded into a rigid structure, the inclination angle is consistent with the inclination angle of the roof cornice, and the distance between the inclination angle and the roof cornice plate is about 900 mm. The workstation is located the inside installation operation that carries out honeycomb aluminum plate of slope operation platform, the inside a plurality of and the horizontal echelonment footboard of ground of setting of slope operation platform for high altitude construction personnel station construction, after a section aluminum plate has been installed, constructor climbs out the station with the help of the facade cat ladder and is located the horizontal truss 1 on the inside promotion platform upper portion of cornice gutter and shifts to next section cornice working face, the platform slides and takes one's place the back slope operation platform and passes through wire rope and cornice fossil fragments system ligature fixedly.
Example 2:
a construction method of an operation platform capable of inclining and sliding aloft in a 7-shaped large angle is disclosed in embodiment 1, and the construction process flow is as follows: a. Deepening the operation platform which inclines and slides high altitude in the 7-shaped large angle → B, processing and manufacturing each part of the operation platform which inclines and slides high altitude in the 7-shaped large angle → C, installing the operation platform which inclines and slides high altitude in the 7-shaped large angle → D, safely checking and accepting the operation platform which inclines and slides high altitude in the 7-shaped large angle → E, using the inclined operation platform → F, sliding the operation platform which inclines and slides high altitude in the 7-shaped large angle to the next cornice keel → G integrally, and disassembling the operation platform. Specifically, the method comprises the following steps:
step A, carrying out deepening design on the operation platform which inclines in a 7-shaped large angle and slides in high altitude: and establishing a structural model of the operating platform which inclines in a 7-shaped large angle and slides high above the ground according to the survey data conclusion to carry out design calculation, wherein the requirements of load calculation, selection of operating platform sectional materials, calculation of operating platform strength, calculation of operating platform rigidity and strength and rigidity of a lower cornice keel structure serving as a support are met.
B, processing and manufacturing each part of the operating platform which inclines in a 7-shaped large angle and slides in the high altitude:
(1) process flow
Lofting → number line → material cutting → size inspection → assembling → welding → grinding → primer, finish.
(2) Lofting: checking the installation size of a drawing, releasing nodes in a 1:1 gross sample, and checking the size of each part; and manufacturing a sample plate and a sample rod as the basis for blanking, bending and other processing. During lofting, machining allowance is considered for a workpiece with an oblique cut, and welding shrinkage allowance is reserved for a welding component according to process requirements.
(3) Number line: inspecting the check material; marking processing positions such as cutting, bending and the like on a material; punching holes and marking part numbers and the like. Materials should be reasonably used as far as possible during material marking.
(4) Material shearing: before cutting, rust, oil stain and the like in the cutting area on the surface of the steel are cleaned; cracks and edge defects larger than 1.0 mm cannot be formed on the fracture after cutting, and the burrs, splashes and the like on the edge are removed. The cut material should be immediately painted at the obvious locations, with the drawing numbers, component numbers and piece numbers written for easy searching.
(5) And (4) checking the size: the allowable deviation between the shearing line and the material line is not more than 2.0 mm; the cut material is re-sized. Cracks and edge deletion larger than 1.0 mm cannot be formed on the cross section of the fracture, and burrs are removed.
(6) Assembling:
1) general provisions of the assembly work: the assembly must be carried out according to the sequence of technological requirements, and the rust, burrs, oil stains and the like on the connecting surface and each side of the welding line within the range of 30-50 mm must be removed completely.
2) The upper truss system is formed by welding square pipes of materials Q235B with the specification of 50mm by 4mm, and the truss specification is as follows: the length of the straight web members is 3600mm, the width of the straight web members is 800mm, the height of the straight web members is 900mm, and the straight web members and the inclined web members with the same specification are arranged at intervals of 1 m.
3) The lower part slope operation platform adopts diameter 32mm, and the pipe welding that the wall thickness 3mm material Q235B becomes slope operation platform, slope operation platform specification is: the length is 10800mm, the width is 800mm, the height is 900mm, round pipe crossbars are welded at the bottom of the inclined operating platform at intervals of 500mm, round pipes with the diameter of phi 25 and the interval of 1000mm are welded at the upper part, and round pipe crossbars with the diameter of phi 25 are matched at the side surfaces. The periphery of the bottom of the inclined operating platform is provided with a skirting board made of a color steel plate with the height of 150mm and the thickness of 0.4mm, the bottom of the inclined operating platform is bound and fixed with a wood pedal by adopting support angle steel to form a stepped platform, and the width of the stepped pedal is at least 300mm and is used for an operator to construct a station. (7) Welding:
1) the diameter of the welding rod is matched with the current:
TABLE 1 welding rod diameter and current matching table
2) To reduce welding stress and distortion, a reasonable welding sequence should first be chosen: for welding large-size steel, welding a welding seam with large shrinkage quantity is firstly welded, so that the welding seam can be freely shrunk, namely, firstly welding a butt welding seam and then welding a fillet welding seam; for plate splicing, firstly welding a transverse short welding seam, and then welding a longitudinal long welding seam; for the combined member, the welding seam with larger stress is welded firstly, and the welding seam with smaller stress is welded secondly, and the anti-deformation measure can be adopted, namely the weldment is artificially deformed in advance before welding, the direction of the deformation is opposite to the deformation after welding, and the deformation is similar to the deformation after welding. After all welding seams are welded, the self-checking is firstly carried out, and then professional workers are reported for spot check.
(8) Polishing: after welding is finished, welding slag is cleaned, and then splashing, welding beading and concave-convex scale grains generated by welding are polished to be smooth by using an electric polisher, and metallic luster is exposed.
(9) Primer and finish: and finishing the epoxy zinc-rich primer within 2 hours after polishing every day, avoiding the return rust caused by the long contact time with air, brushing a micaceous iron intermediate paint after the primer is completely dried, and brushing a silver powder paint after the intermediate paint is completely dried. When the paint is coated, isolation measures are taken to avoid pollution to other areas. When the coating is applied, the coating is not suitable for operation in rainy days or due to dew condensation on the surface of a steel member, and the coating is not required to be rained after 4 hours.
And C, a process flow for installing the 7-shaped large-angle inner-inclined high-altitude sliding operation platform comprises the following steps: computer simulation arrangement track diagram → field positioning → hoisting → fine tuning → operation platform fixing → safety acceptance; the specific operation is as follows:
and (3) field positioning: determining the installation number and the installation positions of the operating platforms according to engineering requirements, and simulating, arranging and positioning by using a computer to ensure the accuracy of the installation positions during field installation;
hoisting: before hoisting, the operation platform firstly checks whether the axes (or control lines) of the roofing steel structure net rack in the transverse direction and the longitudinal direction are well pulled, and if so, the operation platform needs to be supplemented or corrected. The operation platform can be hoisted after being qualified, and the theodolite controls the positioning point of the operation platform during hoisting.
After the operation platform is qualified, adopting an integral hoisting mode, using a 25t truck crane to be matched with a winch to be hoisted to a construction height, and placing the rigid limiting supporting leg at the end part of the horizontal truss into the gutter to be tightly attached to the outer side of the gutter; if the tower crane and the crane can not be installed, the crane can be firstly hung to a nearby position and then can slide to an installation position by utilizing the self-provided slide rail. The operation platform can not collide with the building in the lifting process, and if the operation platform meets a protruding part, personnel can be temporarily arranged at the protruding part to push the operation platform away in a matched mode so as to avoid collision. In the lifting process of the operating platform, the steel wire rope must be kept vertical to the ground, and the steel wire rope is not inclined to pull.
The top surface of the inclined operating platform on the cornice inclined plane part keeps an interval of about 500mm with the bottom surface of the keel, a combined angle between the vertical surface ladder stand on the upper part of the operating platform and the inclined operating platform on the lower part is processed according to the actual inclined angle of the cornice, the inclined operating platform inclined plane is parallel to the inclined plane of the cornice keel after the operating platform is in place, and the interval between the high-low end of the operating platform and the cornice keel support is convenient to adjust.
Fine adjustment: then, the mounting control fine adjustment is respectively carried out from the transverse direction and the longitudinal direction by using a hoist (pulled by a hand or electrically).
Fixing an operation platform: after the adjustment finishes, utilize the chain block to be taut fixed with upper portion horizontal truss and eaves mouth fossil fragments earlier, then utilize U type snap ring with spacing landing leg of rigidity and roofing steel skeleton fixed connection, reuse wire rope with the slope operation platform lower extreme of lower part and four drawknot points drawknot at middle part behind on platform top roofing rack ball joint or the eaves mouth fossil fragments, used calabash when can plucking off hoist and mount. The upper end of the steel wire rope is tightened by a 5T hand-operated hoist (replacing a rope tightening device), and the tightness of the steel wire rope is adjusted in real time according to the field use condition. The steel wire rope winding part is padded with a rubber mat to protect the anti-corrosion coating and the fire-proof coating of the wound spherical joint of the roof net rack or the cornice keel; and after the rope is tightened, the rope head of the steel wire rope is fixedly locked with a spherical joint of the net rack of the roof or a cornice keel, and then the hoist is loosened. The hand hoist should not be too tight when tightening up the wire rope, avoids wire rope to receive too big tension. The other end of the steel wire rope is locked by at least 3 500kg lock catches, the lock catches are arranged at intervals of at least 300mm in a staggered mode, the positions of the lock catches correspond to marking lines, whether the lock catches are loose or not is checked regularly, and a safety knot is arranged at the rope end position.
Step D, safe acceptance of the operation platform which inclines in a 7-shaped large angle and slides in high altitude:
before the operation platform is officially used, all units are organized to carry out joint acceptance check, the serial number of the operation platform used on site is listed to clearly determine the person in charge, all parts and devices of the operation platform need to meet the safe use requirement, meanwhile, overload test confirmation is carried out, after acceptance check is qualified, and the operation platform can be officially put into use. The operation platform is used for carrying out a static load test of not less than 1.5 times of use construction before use, the static load test time is not less than 4 hours, and the operation platform can be put into use after the test is qualified. Before each use, the device should be operated at high altitude for 2-3 times in an idle load manner, and the device can be used without failure.
E, safe use of the inclined operating platform: after the operation platform is installed, the operating personnel enter the inclined operation platform by the horizontal rod arranged inside the upper eaves horizontal truss to install the eaves plate. The worker must wear a safety belt during construction.
And F, integrally sliding the 7-shaped large-angle inner inclined high-altitude sliding operating platform to the next cornice keel: after the installation operation is accomplished in a position of operation platform, the operation personnel untie ligature slope operation platform's wire rope, personnel leave operation platform and get into cornice gutter, loosen the spacing landing leg of rigidity, with the help of setting up the back chain on cornice fossil fragments system and remove whole operation platform to next operation district, cornice fossil fragments system upper portion is drawn and is established twice phi 14 wire rope and be used for the upwards perk of truss of restriction operation platform, operation platform takes one's place the back horizontal truss and passes through chain block and fossil fragments fixed, the spacing landing leg of rigidity passes through snap ring and roofing steel skeleton fixed connection, lower part slope operation platform passes through wire rope and fixes with top roofing rack ball joint or cornice fossil fragments, set up multichannel insurance limit measure.
And G, the operation flow of disassembling the operation platform is as follows: disassembling other accessories of the operating platform → completely loosening and unloading the steel wire rope → disassembling the steel wire rope → descending the operating platform → cleaning the material.
The operating platform disassembly process notes:
(1) the disassembly must be carried out according to the workflow, and the disassembly of the related accessories is strictly forbidden before the operating platform is not grounded and the steel wire rope is not completely unloaded.
(2) Tools, accessories and other objects in the process of disassembly cannot be thrown, and particularly, the steel wire rope cannot be thrown when being disassembled, but must be pulled by a firm nylon rope to be slowly released from a high place and dropped into the ground.
(3) The lower part corresponding to the disassembly operation is provided with a warning sign, and a specially-assigned person is responsible for monitoring.
Ground workers control the operating platform through the cable so that the operating platform does not displace in the vertical direction, and then the workers in the operating platform loosen the direct connection between the operating platform and the steel wire rope.
Claims (9)
1. The utility model provides an operation platform that high altitude that inclines slided in "7" font wide-angle which characterized in that: comprises a 7-shaped truss system, rigid limiting supporting legs and sliding rails; the 7-shaped truss system comprises a horizontal truss, a vertical face crawling ladder and an inclined operation platform; one end of the horizontal truss is fixedly connected with the upper end of the vertical surface ladder stand, and the other end of the horizontal truss is fixedly connected with the rigid limiting supporting leg; the inclined operating platform is connected with the lower end of the vertical surface ladder in an inclined mode, and the inclined angle of the inclined operating platform is consistent with the inclined angle of the roof cornice; the horizontal truss, the vertical surface crawling ladder and the inclined operation platform are connected into an integral rigid structure, and the integral structure is 7-shaped; the sliding rail is arranged at the bottom of the horizontal truss; in a use state, the rigid limiting supporting leg extends into the gutter, is tightly attached to the outer side of the gutter, and is connected with the roof steel framework through the clamping ring; the horizontal truss is located cornice horizontal keel upper portion, the facade cat ladder is located outside the cornice, the slope operation platform is parallel with the inclined plane of cornice fossil fragments to be connected with cornice fossil fragments through wire rope.
2. The operation platform capable of inclining and high-altitude slipping in the 7-shaped large angle according to claim 1 is characterized in that: the rigid limiting supporting leg is a square frame formed by combining section steel.
3. The 7-shaped large-angle inner-inclined high-altitude slippage operation platform as claimed in claim 2, wherein: the sliding rail is made of round pipes, and the two round pipes are welded at the bottom of the horizontal truss in parallel; the two ends of the circular tube slightly upwarp.
4. The operation platform capable of inclining and high-altitude slipping in the 7-shaped large angle according to claim 1 or 3 is characterized in that: horizontal truss adopts the specification to be 50mm 4mm material Q235B's square tube welding and forms, and the truss specification is: the length of the straight web members is 3600mm, the width of the straight web members is 800mm, the height of the straight web members is 900mm, and the straight web members and the inclined web members with the same specification are arranged at intervals of 1 m.
5. The operation platform capable of inclining and high-altitude slipping in the 7-shaped large angle according to claim 4 is characterized in that: the slope operation platform adopts the pipe welding that diameter 32mm, 3mm material Q235B of wall thickness become slope operation platform, slope operation platform specification is: the length is 10800mm, the width is 800mm, the height is 900mm, round pipe crossbars are welded at the bottom of the inclined operating platform at intervals of 500mm, round pipes with the diameter of phi 25 and the interval of 1000mm are welded at the upper part, and the round pipe crossbars with the diameter of phi 25 are matched at the side surfaces; the periphery of the bottom of the inclined operating platform is provided with a skirting board made of a color steel plate with the height of 150mm and the thickness of 0.4mm, the bottom of the inclined operating platform is bound and fixed with a wood pedal by adopting support angle steel to form a stepped platform, and the width of the stepped pedal is at least 300 mm.
6. A construction method of an operation platform which inclines in a 7-shaped large angle and slides in high altitude is characterized in that: the construction method of the 7-shaped large-angle inner-inclined high-altitude sliding operation platform comprises the following construction process flows of: A. deepening the operation platform which inclines and slides high altitude in the 7-shaped large angle → B, processing and manufacturing each part of the operation platform which inclines and slides high altitude in the 7-shaped large angle → C, installing the operation platform which inclines and slides high altitude in the 7-shaped large angle → D, safely checking and accepting the operation platform which inclines and slides high altitude in the 7-shaped large angle → E, using the inclined operation platform → F, sliding the operation platform which inclines and slides high altitude in the 7-shaped large angle to the next cornice keel → G integrally, and disassembling the operation platform.
7. The construction method of the 7-shaped large-angle inner-inclined high-altitude sliding operation platform according to claim 6, characterized in that: and C, a process flow for installing the 7-shaped large-angle inner-inclined high-altitude sliding operation platform comprises the following steps: computer simulation arrangement track diagram → field positioning → hoisting → fine tuning → operation platform fixing → safety acceptance; the specific operation is as follows:
and (3) field positioning: determining the installation number and the installation positions of the operating platforms according to engineering requirements, and simulating, arranging and positioning by using a computer to ensure the accuracy of the installation positions during field installation;
hoisting: hoisting can be carried out only after the operation platform is qualified, and the theodolite controls the positioning point of the operation platform during hoisting; after the operation platform is qualified, adopting an integral hoisting mode, using a 25t truck crane to be matched with a winch to be hoisted to a construction height, and placing the rigid limiting supporting leg at the end part of the horizontal truss into the gutter to be tightly attached to the outer side of the gutter; if the tower crane and the crane can not be installed, the tower crane and the crane can be firstly hoisted to nearby positions and then slide to the installation position by utilizing self-provided slide rails; the operation platform cannot collide with a building in the lifting process, and if the operation platform meets a protruding part, personnel can be temporarily arranged at the protruding part to push the operation platform away in a matched mode so as to avoid collision; in the lifting process of the operating platform, the steel wire rope must be kept vertical to the ground, and the steel wire rope is not inclined to pull;
the top surface of the inclined operating platform at the cornice inclined surface part keeps an interval of about 500mm with the bottom surface of the keel, and the combined angle between the vertical surface ladder stand at the upper part of the operating platform and the inclined operating platform at the lower part is processed according to the actual inclined angle of the cornice, so that the inclined operating platform inclined surface is parallel to the inclined surface of the cornice keel after the operating platform is in place, and the interval between the high end and the low end of the operating platform and the cornice keel bracket is convenient to adjust;
fine adjustment: mounting, controlling and fine-adjusting the transverse direction and the longitudinal direction by using a gourd;
fixing an operation platform: after adjustment is finished, the upper horizontal truss and the cornice keel are firstly tensioned and fixed by using a chain block, then the rigid limiting supporting leg is fixedly connected with the roof steel framework by using a clamping ring, and then four pulling points at the lower end and the middle part of the inclined operating platform at the lower part are pulled to be connected to a roof net rack ball node or the cornice keel above the inclined operating platform by using a steel wire rope, so that the block used in hoisting can be picked up; the upper end of the steel wire rope is tightened by a 5T hand-operated hoist, and the tightness of the steel wire rope is adjusted in real time according to the field use condition; the steel wire rope winding part is padded with a rubber mat to protect the anti-corrosion coating and the fire-proof coating of the wound spherical joint of the roof net rack or the cornice keel; after being tightened, the rope heads of the steel wire ropes are fixedly locked with the spherical nodes of the net rack of the roof or the cornice keels, and then the hoists are loosened; the hoist is not required to be too tight when the steel wire rope is tightened, so that the steel wire rope is prevented from being subjected to too large tension; the other end of the steel wire rope is locked by at least 3 500kg lock catches, the lock catches are arranged at intervals of at least 300mm in a staggered mode, the positions of the lock catches correspond to marking lines, whether the lock catches are loose or not is checked regularly, and a safety knot is arranged at the rope end position.
8. The construction method of the 7-shaped large-angle inner-inclined high-altitude slippage operation platform according to claim 7, characterized in that: e, use of the inclined operation platform: after the operation platform is installed, the operating personnel enter the inclined operation platform by the horizontal rod arranged inside the upper eaves horizontal truss to install the eaves plate.
9. The construction method of the 7-shaped large-angle inner-inclined high-altitude slippage operation platform according to claim 8, characterized in that: and F, integrally sliding the 7-shaped large-angle inner inclined high-altitude sliding operating platform to the next cornice keel: after the installation operation is accomplished in a position of operation platform, the operation personnel untie ligature slope operation platform's wire rope, personnel leave operation platform and get into cornice gutter, loosen the spacing landing leg of rigidity, with the help of setting up the back chain on cornice fossil fragments system and remove whole operation platform to next operation district, cornice fossil fragments system upper portion is drawn and is established twice phi 14 wire rope and is used for limiting operation platform's truss perk that makes progress, operation platform takes one's place the back, horizontal truss passes through the chain block and is fixed with fossil fragments, the spacing landing leg of rigidity passes through snap ring and roofing steel skeleton fixed connection, lower part slope operation platform passes through wire rope and fixes with top roofing rack ball joint or cornice fossil fragments, set up multichannel insurance limit measure.
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| CN201911079668.9A CN110905181A (en) | 2019-11-07 | 2019-11-07 | 7-shaped large-angle inner-inclined high-altitude sliding operation platform and construction method thereof |
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| CN201911079668.9A CN110905181A (en) | 2019-11-07 | 2019-11-07 | 7-shaped large-angle inner-inclined high-altitude sliding operation platform and construction method thereof |
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