阅读说明：本技术 一种装配式建筑组合工具式外防护架体系及其施工方法 (assembled building combined tool type outer protective frame system and construction method thereof ) 是由 王植德 费恺 任颖 那金兰 陈斌 董佳节 李萌 孙菁 李朝旭 邹雪 孟凡伟 张 于 2019-09-24 设计创作，主要内容包括：一种装配式建筑组合工具式外防护架体系及其施工方法,由若干单榀防护架通过螺栓拼接而成,单榀防护架包括踏步,用于固定踏步的矩形结构框架,固定在矩形结构框架上的半米字形结构防护网,以及用于支撑矩形结构框架的三角支撑架；三角支撑架直接与结构墙体固定或者通过模块化外延支撑架与结构墙体固定,三角支撑架水平支撑杆上设有用于与矩形结构框架固定的连接耳板,连接耳板上设有条状通孔；矩形结构框架远离结构墙体的侧壁上设有竖向方钢管,半米字形结构防护网底面设有用于与竖向方钢管插接固定的插杆,插杆插入竖向方钢管后通过螺栓固定。本发明在装配式建筑施工中操作简单,在保证安全的前提下节省了施工的时间,加快了建筑施工工程的进度。(An assembled building combined tool type outer protective frame system and a construction method thereof are formed by splicing a plurality of single protective frames through bolts, wherein each single protective frame comprises steps, a rectangular structural frame for fixing the steps, a half-meter-shaped structural protective net fixed on the rectangular structural frame and a triangular support frame for supporting the rectangular structural frame; the triangular support frame is directly fixed with the structural wall or fixed with the structural wall through the modular extension support frame, a connecting lug plate used for being fixed with the rectangular structural frame is arranged on a horizontal support rod of the triangular support frame, and a strip-shaped through hole is formed in the connecting lug plate; the side wall of the rectangular structure frame far away from the structure wall body is provided with a vertical square steel pipe, the bottom surface of the half-meter-shaped structure protective net is provided with an insertion rod used for being fixedly inserted into the vertical square steel pipe in an inserting mode, and the insertion rod is fixed through a bolt after being inserted into the vertical square steel pipe. The method is simple to operate in the assembly type building construction, saves the construction time on the premise of ensuring the safety, and accelerates the progress of the building construction project.)

1. the utility model provides an outer protection frame system of assembled building combination instrument formula, is formed by a plurality of single pin protection frame through the bolt concatenation, its characterized in that: the single-frame protective frame comprises steps, a rectangular structural framework (3) for fixing the steps, a half-meter-shaped structural protective net (4) fixed on the rectangular structural framework (3), and a triangular support frame (5) for supporting the rectangular structural framework (3); the triangular support frame (5) is directly fixed with a structural wall or fixed with the structural wall through a modular extension support frame (6), a connecting lug plate (9) used for being fixed with the rectangular structural frame (3) is arranged on a horizontal support rod of the triangular support frame (5), strip-shaped through holes (10) are formed in the connecting lug plate (9), bolt holes used for being connected with the connecting lug plate (9) are uniformly arranged on the long side edge of the rectangular structural frame (3) at intervals, and bolt holes used for being connected and fixed with the adjacent rectangular structural frame (3) are arranged on the short side edge of the rectangular structural frame (3); the step comprises a modular forming structure pedal (1) laid in the middle of a rectangular structure frame (3) and detachable connecting turning plates (2) arranged on two sides of the modular forming structure pedal (1), one end of each detachable connecting turning plate (2) is fixed with the modular forming structure pedal (1) through a hinge, and the other end of each detachable connecting turning plate is tightly attached to the short side edge of the rectangular structure frame (3);

The side wall of the rectangular structure frame (3) far away from the structure wall is provided with a vertical square steel pipe (31), the bottom surface of the half-meter-shaped structure protective net (4) is provided with an inserted bar used for being fixedly inserted with the vertical square steel pipe (31), the inserted bar is fixed through a bolt after being inserted into the vertical square steel pipe (31), and the vertical square steel pipe (31) is further provided with a lateral reinforcing piece (11) used for preventing the half-meter-shaped structure protective net (4) from being turned on one side.

2. The fabricated building assembly tool-type outer protective frame system of claim 1, wherein: modularization epitaxial support frame (6) are formed by the concatenation of a plurality of rectangle steel framework, the side that rectangle steel framework is close to triangular supports frame (5) and structure wall body is formed by the preparation of single channel-section steel, all the other upper and lower sides with be used for forming by two channel-section steels dorsad with adjacent rectangle steel framework's concatenation side, welded fastening has U type mounting (13) between the channel-section steel that two dorsad set up, the bottom plate of U type mounting (13) is equipped with and is used for adjacent rectangle steel framework fixed or with the solid bolt hole of superstructure wall body.

3. The fabricated building assembly tool-type outer protective frame system of claim 2, wherein: and an oblique support (14) is also arranged between the adjacent side edges of the rectangular steel frame.

4. The fabricated building assembly tool-type outer protective frame system of claim 1, wherein: the triangular support frame (5) and the modular extension support frame (6) are fixed with a structural wall body through wall-penetrating screws (7) and square fastening gaskets (8).

5. The fabricated building assembly tool-type outer protective frame system of claim 1, wherein: the triangular support frame (5) is further provided with a side supplementing support tripod (15) perpendicular to the plane where the triangular support frame (5) is located, and the side supplementing support tripod (15) comprises a horizontal long edge and an inclined edge supported between the horizontal long edge and the triangular support frame (5).

6. the fabricated building assembly tool-type outer protective frame system of claim 4, wherein: the wall-penetrating screw rod fixing device is characterized in that a structure chain (16) used for falling of the wall-penetrating screw rod (7) is further arranged on the triangular support frame (5), one end of the structure chain (16) is fixed with the triangular support frame (5), and the other end of the structure chain is fixed with a gasket on the wall-penetrating screw rod (7).

7. The fabricated building assembly tool-type outer protective frame system of claim 1, wherein: and the rectangular structural frame (3) is also provided with a lifting hole (17) for fixing a lifting hook.

8. The fabricated building assembly tool-type outer protective frame system of claim 1, wherein: a skirting board (18) is further arranged at the skirting position at the bottom of the half-meter-shaped structure protective net (4).

9. the method for constructing a modular building assembly tool external guard frame system as claimed in any one of claims 1 ~ 8, comprising the steps of:

Step one, assembling a single-frame protective frame: assembling single-frame protective frames according to construction requirements, wherein the bottom supports of the single-frame protective frames are all triangular support frames (5) or are a combined structure of the triangular support frames (5) and the triangular support frames (5) plus modular extension support frames (6), edge supplement support triangular frames (15) are welded and fixed on the triangular support frames (5) positioned at corners, and the modular extension support frames (6) are applied to the lower portions of balconies and air-conditioning plates;

Step two, hoisting a single-frame protective frame in place: hoisting single protective frames in place, manually aligning wall penetrating screws of the triangular support frames (5) or the modular extension support frames (6) to preformed holes on a structural wall through clamping pieces, and penetrating and then fastening;

step three, splicing and fixing adjacent single-truss protection frames: the upper parts of adjacent half-meter-shaped structural protection nets (4) are connected through U-shaped codes, the short sides of adjacent rectangular structural frames (3) are fixed through bolts, and vertical sealing plates are additionally arranged on the rectangular structural frames (3) between the adjacent single-truss protection frames at the sedimentation positions; the positions of the adjacent single-frame protective frames are adjusted by adjusting the relative positions of the rectangular structural frame (3) and the strip-shaped through holes (10); whether the bolt is connected and fastened is checked by opening the detachable connection turning plate (2);

Step four, mounting a plurality of layers of protection frames: and (3) mounting a second-layer protection frame according to the second step and the third step, dismounting a first-layer protection frame after the construction is finished, dismounting the detachable connection turning plate (2) when the first-layer protection frame is dismounted, lifting the first-layer protection frame to a third layer after the first-layer protection frame is dismounted, mounting the detachable connection turning plate (2) according to the second step and the third step, and mounting the detachable connection turning plate after the whole frame body is mounted.

Technical Field

The invention belongs to the field of building construction, and particularly relates to an assembled building combined tool type outer protective frame system and a construction method thereof.

background

the scaffold has wide application and many varieties in the building industry, particularly has a large population in China, is more than the building industry and has developed building rows. Fastener-type steel pipe scaffolds are introduced into China from the 50 th of the last century, until today, a lot of building industries are still used in building construction, but the traditional bottom support fixed scaffold in building construction at present cannot meet the requirements of construction in high-rise buildings, and simultaneously along with the rapid development of the assembly type building industry, the assembly type building process is applied on a large scale in a new project, the traditional support fixed scaffold is not suitable any more, and because the traditional scaffold needs a lot of steel pipes and fasteners, the self weight of the traditional scaffold is too large, the assembly and disassembly are troublesome in the using process, great manpower and material resource loss is caused, the fasteners are easy to lose, or the difficulty of building the scaffold at a corner is high. And the traditional scaffold has more material consumption and high cost.

The novel climbing scaffold which is widely applied at home and abroad makes certain progress in the aspect of improving the stability and the structure of the scaffold, the complexity of the scaffold is simplified when the existing lifting scaffold (climbing scaffold) is compared with the traditional scaffold, but the problems of high dead weight, poor lifting synchronism during climbing, difficult self-locking safety guarantee and the like still exist in the aspect of optimizing space, in addition, the flexibility is not enough, the self maintenance cost is high, and great burden is caused to the production cost in the application process.

Disclosure of Invention

The invention aims to provide an assembled building combined tool type outer protective frame system and a construction method thereof, and aims to solve the technical problem of inconvenient repeated use in the prior art; and solves the problem of long construction time.

in order to achieve the purpose, the invention adopts the following technical scheme:

The utility model provides an outer protection frame system of assembled building combination instrument formula, is formed by a plurality of single pin protection frame through the bolt concatenation, its characterized in that: the single-frame protective frame comprises steps, a rectangular structural frame for fixing the steps, a half-meter-shaped structural protective net fixed on the rectangular structural frame, and a triangular support frame for supporting the rectangular structural frame; the triangular support frame is directly fixed with a structural wall or fixed with the structural wall through a modular extension support frame, a connecting lug plate used for being fixed with a rectangular structural frame is arranged on a horizontal support rod of the triangular support frame, strip-shaped through holes are formed in the connecting lug plate, bolt holes used for being connected with the connecting lug plate are uniformly arranged on the long side edge of the rectangular structural frame at intervals, and bolt holes used for being connected and fixed with adjacent rectangular structural frames are arranged on the short side edge of the rectangular structural frame; the pedal comprises a modular forming structure pedal and a detachable connecting turning plate, wherein the modular forming structure pedal is laid in the middle of the rectangular structure frame, the detachable connecting turning plate is arranged on two sides of the modular forming structure pedal, one end of the detachable connecting turning plate is fixed with the modular forming structure pedal through a hinge, and the other end of the detachable connecting turning plate is arranged close to the short side edge of the rectangular structure frame;

The side wall of the rectangular structure frame far away from the structure wall body is provided with a vertical square steel pipe, the bottom surface of the half-meter-shaped structure protective net is provided with an insertion rod used for being fixedly inserted with the vertical square steel pipe in an inserting mode, the insertion rod is fixed through a bolt after being inserted into the vertical square steel pipe, and the vertical square steel pipe is further provided with a lateral reinforcing piece used for preventing the half-meter-shaped structure protective net from turning on one side.

Further preferably, the modularization epitaxial support frame is formed by the concatenation of a plurality of rectangle steel framework, the side that rectangle steel framework is close to triangular supports frame and structural wall body is formed by the preparation of single channel-section steel, all the other upper and lower sides with be used for forming by two channel-section steels dorsad with the concatenation side of adjacent rectangle steel framework, welded fastening has U type mounting between the channel-section steel that two dorsad set up, the bottom plate of U type mounting is equipped with and is used for adjacent rectangle steel framework fixed or with the fixed bolt hole of superstructure wall body.

furthermore, an oblique support is arranged between the adjacent sides of the rectangular steel frame.

Furthermore, the triangular support frame and the modular extension support frame are fixed with the structural wall body through wall-penetrating screws and square fastening gaskets.

Further, still be equipped with on the triangular supports frame with the planar vertically benefit limit of triangular supports frame place and support the tripod, benefit limit and support the tripod and include the long limit of level and support the hypotenuse between the long limit of level and triangular supports frame.

Furthermore, a structural chain for falling of the wall-penetrating screw is further arranged on the triangular support frame, one end of the structural chain is fixed with the triangular support frame, and the other end of the structural chain is fixed with a gasket on the wall-penetrating screw.

In addition, the rectangular structural frame is also provided with a lifting hole for fixing a lifting hook.

More preferably, a skirting board is further arranged at the skirting position at the bottom of the half-meter-shaped structure protective net.

A construction method of an assembled building combined tool type outer protective frame system is characterized by comprising the following steps:

Step one, assembling a single-frame protective frame: assembling single-frame protective frames according to construction requirements, wherein bottom supports of the single-frame protective frames are triangular support frames or a combined structure of the triangular support frames and the triangular support frames plus modular epitaxial support frames, edge supplement support triangular frames are welded and fixed on the triangular support frames positioned at corners, and the modular epitaxial support frames are applied to the lower portions of balconies and air-conditioning plates;

Step two, hoisting a single-frame protective frame in place: hoisting single protective frames in place, manually aligning wall penetrating screws of the triangular support frame or the modular extension support frame to preformed holes on a structural wall through clamping pieces, and penetrating and fastening;

Step three, splicing and fixing adjacent single-truss protection frames: connecting the upper parts of adjacent half-meter-shaped structural protection nets through U-shaped codes, fixing the short sides of adjacent rectangular structural frames through bolts, and additionally arranging vertical sealing plates on the rectangular structural frames between the adjacent single-truss protection frames at the sedimentation positions; the positions of the adjacent single-truss protection frames are adjusted by adjusting the relative positions of the rectangular structural frame and the strip-shaped through holes; checking whether the bolt is connected and fastened by opening the detachable connecting turnover plate;

Step four, mounting a plurality of layers of protection frames: and (3) mounting a second layer of protection frames according to the second step and the third step, dismounting a first layer of protection frames after the construction is finished, dismounting the detachable connection turning plate when the first layer of protection frames is dismounted firstly, lifting to a third layer after the first layer of protection frames is dismounted, mounting according to the second step and the third step, and mounting the detachable connection turning plate after the whole frame body is mounted.

compared with the prior art, the invention has the following characteristics and beneficial effects:

The invention comprises a triangular support frame and a modular extension support frame for supporting a load integral structure, a modular shaped structure pedal and a detachable connecting turnover plate for providing a working surface, and a half-meter-shaped structure protective net for protecting the safety of workers and preventing a portable tool from falling.

The invention has the characteristics of safety, applicability and the like, has good popularization and practical values, and can generate good economic benefits after wide popularization and application.

Drawings

FIG. 1 is a schematic structural view of a single protective frame according to the present invention;

FIG. 2 is a schematic view of a connection structure of a half-meter-shaped structural protection net and a rectangular structural frame according to the present invention;

FIG. 3 is a schematic view of a splicing structure of a single protective frame according to the present invention;

FIG. 4 is a schematic structural view of a triangular support and a modular extension support according to the present invention;

FIG. 5 is a schematic structural view of a modular extension support according to the present invention;

fig. 6 is a schematic view of a connection structure of a modular extension support frame and a supplementary support tripod according to the present invention.

reference numerals: 1-modular shaped structure pedal; 2-a detachable connection turning plate; 3-a rectangular structural frame; 31-vertical square steel tubes; 4-half-meter-shaped structure protective net; 5-a triangular support frame; 6-modular extension support frame; 7-a wall screw; 8-square fastening pads; 9-connecting ear plates; 10-strip-shaped through holes; 11-lateral reinforcement; 13-U-shaped fixing pieces; 14-oblique supporting; 15-supplement of side support tripod; 16-structural chains; 17-a hook; 18-skirting board.

Detailed Description

In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention is further described below.

The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

An assembled building combination tool type outer protection frame system is formed by splicing a plurality of single protection frames through bolts as shown in figure 1, wherein each single protection frame comprises steps, a rectangular structural frame 3 for fixing the steps, a half-meter-shaped structural protection net 4 fixed on the rectangular structural frame 3 and a triangular support frame 5 for supporting the rectangular structural frame 3; the triangular support frame 5 is directly fixed with a structural wall or fixed with the structural wall through a modular extension support frame 6, a horizontal support rod of the triangular support frame 5 is provided with a connecting lug plate 9 for fixing with a rectangular structural frame 3, each triangular support frame 5 is parallelly provided with two connecting lug plates 9, transverse and vertical supports of the triangular support frame 5 adopt No. 10 channel steel, an oblique support adopts No. 6 channel steel for welding and fixing, the connecting lug plates 9 are provided with strip-shaped through holes 10, as shown in FIG. 3, bolt holes for connecting the lug plates 9 are uniformly arranged on the long side edge of the rectangular structural frame 3 at intervals, the connecting lug plates 9 and the rectangular structural frame 3 are fixedly provided with M14 hexagon head bolts and nuts, and bolt holes for connecting and fixing adjacent rectangular structural frames 3 are arranged on the short side edge; the pedal comprises a modular shaped structure pedal 1 laid in the middle of a rectangular structure frame 3 and detachable connection turning plates 2 arranged on two sides of the modular shaped structure pedal 1, one end of each detachable connection turning plate 2 is fixed with the modular shaped structure pedal 1 through a hinge, and the other end of each detachable connection turning plate is arranged close to the short side edge of the rectangular structure frame 3;

As shown in fig. 2, a vertical square steel pipe 31 is arranged on the side wall of the rectangular structural frame 3 away from the structural wall, an insertion rod for inserting and fixing the vertical square steel pipe 31 is arranged on the bottom surface of the half-meter-shaped structural protection net 4, the insertion rod is fixed by a bolt after being inserted into the vertical square steel pipe 31, and a lateral reinforcing member 11 for preventing the half-meter-shaped structural protection net 4 from turning on one side is further arranged on the vertical square steel pipe 31.

As shown in fig. 4 and 5, modularization epitaxial support frame 6 is formed by the concatenation of a plurality of rectangle steel framework, the side that rectangle steel framework is close to triangular support frame 5 and structural wall body is formed by the preparation of single channel-section steel, all the other is last, lower side and be used for forming by two channel-section steels dorsad with adjacent rectangle steel framework's concatenation side, welded fastening has U type mounting 13 between the channel-section steel that two dorsad set up, the bottom plate of U type mounting 13 is equipped with and is used for adjacent rectangle steel framework fixed or with the solid bolt hole of superstructure wall body, still be equipped with diagonal bracing 14 between rectangle steel framework's the adjacent side, triangular support frame 5 and modularization epitaxial support frame 6 are all fixed with structural wall body through wall screw 7 and square fastening gasket 8, wall screw 7 is the M20 wall bolt that wears.

As shown in fig. 6, the triangular support frame 5 is further provided with a complementary side supporting triangular frame 15 perpendicular to the plane where the triangular support frame 5 is located, the complementary side supporting triangular frame 15 comprises a horizontal long side and a bevel side supported between the horizontal long side and the triangular support frame 5, as can be seen from fig. 1, the triangular support frame 5 is further provided with a structural chain 16 used for the wall-penetrating screw 7 to fall, one end of the structural chain 16 is fixed with the triangular support frame 5, the other end of the structural chain is fixed with a gasket on the wall-penetrating screw 7, the rectangular structural frame 3 is further provided with a lifting hole 17 used for fixing a lifting hook, and a skirting board 18 is further arranged at the bottom of the half-meter-shaped.

The size of a single half-meter-shaped structural protection net 4 is 1.95 multiplied by 1.5m, the net surface adopts perforated steel plates with the thickness of 0.5mm, and the size of a single modular shaped structural pedal 1 is 1.95 multiplied by 0.5 m.

A construction method of an assembled building combined tool type outer protective frame system is characterized by comprising the following steps:

Step one, assembling a single-frame protective frame: assembling single-frame protective frames according to construction requirements, wherein the bottom supports of the single-frame protective frames are triangular support frames 5 or a combined structure of the triangular support frames 5 and the triangular support frames 5 plus modular extension support frames 6, edge supplement support triangular frames 15 are welded and fixed on the triangular support frames 5 at the corners, and the modular extension support frames 6 are applied to the lower portions of balconies and air-conditioning plates;

Step two, hoisting a single-frame protective frame in place: hoisting single protective frames in place, manually aligning wall penetrating screws of the triangular support frames 5 or the modular extension support frames 6 to preformed holes on a structural wall through clamping pieces, and penetrating and fastening;

step three, splicing and fixing adjacent single-truss protection frames: connecting the upper parts of adjacent half-meter-shaped structural protection nets 4 through U-shaped codes, fixing the short sides of adjacent rectangular structural frames 3 through bolts, and additionally arranging vertical sealing plates on the rectangular structural frames 3 between the adjacent single-truss protection frames at the sedimentation positions; the positions of the adjacent single-truss protection frames are adjusted by adjusting the relative positions of the rectangular structural frame 3 and the strip-shaped through holes 10; whether the bolts are connected and fastened is checked by opening the detachable connection turning plate 2;

Step four, mounting a plurality of layers of protection frames: and (3) mounting a second layer of protection frame according to the second step and the third step, dismounting a first layer of protection frame after the construction is finished, dismounting the detachable connection turning plate 2 when the first layer of protection frame is dismounted firstly, lifting to a third layer after the first layer of protection frame is dismounted, mounting according to the second step and the third step, and mounting the detachable connection turning plate 2 after the whole frame body is mounted.

Construction method

(1) two layers of frame bodies are adopted to protect two layers, and the scheme of upward lifting layer by layer is adopted; the protection is more than 1.2m of the operation surface, and the frame body is light and safe, has strong integrity and meets the construction protection requirement.

(2) Conditions to be met on site before installation:

Firstly, the prefabricated shear wall is installed and grouted before the outer wall protection frame is hoisted;

Secondly, the inclined struts used for fixing the external hanging plate and the prefabricated shear wall are firmly connected with the structural plate;

Third, the full cast-in-place structure layer landing external scaffold is set up to be 1.2m higher than the operation surface

And fourthly, finishing welding of the outer wall protection frame, wherein the strength meets the requirement.

(3) The construction step is characterized in that:

First floor, two layers of branch wall bodies hoist in ground installation support together with prefabricated side fascia, adopt the tower crane to promote when falling, hang to next floor working face installation, convenient and fast when demolising.

Firstly, a processing process flow is as follows: construction preparation → construction lofting → cutting → boring → electric welding → painting

secondly, hoisting work flow: assembling → hanging rack hoisting → hanging rack dismantling → assembling and disassembling cycle.

And (4) determining the anchoring position of the frame body by combining the plan layout of the construction drawing, assembling and installing the prefabricated outer wall on site according to welding, ensuring the balance of hoisting and hoisting the first layer.

Thirdly, construction alternate flow: first layer installation → first layer hoisting in place → first layer node treatment (gap between single-roof-truss protection frames) → first layer acceptance → first layer put into use → second layer installation → second layer hoisting in place → second layer node treatment (gap between single-roof-truss protection frames) → second layer acceptance → second layer put into use → first layer protection frame dismantling → first layer dismantling is followed by hanging to third layer installation → third layer hoisting in place → third layer node treatment (gap between single-roof-truss protection frames) → third layer acceptance → third layer put into use → second layer protection frame → second layer dismantling is followed by hanging to fourth layer installation → fourth layer hoisting in place → fourth layer node treatment (gap between single-roof-truss protection frames) → fourth layer acceptance → fourth layer put into use → the.

(4) The installation of the frame body:

the first and second layers of triangular support frames can be selected to be installed on the ground and the prefabricated external wall panel under the condition that the installation condition allows, then the first and second layers of triangular support frames are hoisted to the operation layer together with the prefabricated wall panel, the prefabricated external wall panel is hoisted together when being installed, and the floor plate is installed above the floor plate, so that the installation problem caused by secondary transportation and frame body dislocation is reduced; the frame body is lifted upwards and backwards and is lifted by a tower crane to be installed on the floor surface to be installed. After the protective frame is installed, the protective frame needs to be subjected to safety, technical and supervision combined inspection and acceptance, and is put into use after safety is ensured.

when the hoisting is performed by turns, and the upper-layer frame body is installed, an operator holds the special auxiliary clamping rod to guide the hoisting of the tower crane to be in place, and clamps the bolt rod to align the bolt rod to be inserted into the reserved hole.

The lifting mode of the frame body adopts the mode that the whole single-side wall protection frame is dismantled and hung to the installation layer for installation, and the lifting machine adopts a tower crane; the lifting cycle is one-layer one-lifting (i.e. the first layer outer protective frame is lifted to the third layer for installation, and the second layer outer protective frame is lifted to the fourth layer for installation until the main body is completed).

When the outer protective frame is hoisted, the tower crane hook is ensured to be at the gravity center of the frame body, the instability and the inversion of the hanging frame are avoided, and the hanging frame is slowly lifted to the upper layer. Before the protective frame is removed, the connecting turnover plate between two adjacent sections of frame bodies is removed (the connecting rod piece, the guardrail and the bearing frame in the single-section combined frame body cannot be loosened).

Before the outer protective frame is dismantled, a lifting hook must be hung as required to tighten the steel wire rope, then a rod piece for a supporting structure is dismantled, and finally a bearing bolt is loosened in a floor. The hoisting point is symmetrically provided with two points which are required to be arranged on the unit tripod. After the tower crane hook is fastened, firstly hoisting a small amount, balancing the self weight of the frame body, unloading the frame body load on the hook bolt, then loosening the hook bolt nut, carefully checking whether the hook bolt nut is completely loosened, and confirming that the hoisting can be carried out at the rear. In the hoisting process, the lifting hook is used for vertically, stably and slowly hoisting, two steel wire ropes for keeping the balance of the frame body are tied up and down on the two sides of the frame body, and operators stand on the floor slab to coordinate the balance of the frame body in the hoisting process. The safety of operators is ensured during lifting, and a special guard area is arranged in the falling range for nursing.

Lifting the first outer protective frame to three layers for installation after dismantling

Firstly, cleaning objects on the outer protective frame before dismantling.

Secondly, an operator (2 persons) stands on the external protective frame to hang the lifting hook to keep the lifting rope tight but not stressed, and the operator is ready to lift.

And thirdly, the operator (2) stands indoors to screw out the fixing bolt from the inner side. Meanwhile, 2 cables and wind ropes are adopted to stand by 2 persons outdoors to stabilize the outer protection frame, so that the outer protection frame is prevented from suddenly swinging outwards due to screw loosening.

And fourthly, slowly hoisting the outer protection frame of the unit to the three-layer to-be-installed position from the first layer by the tower crane.

And fifthly, stopping falling when the outer protective frame is lifted to the position close to the three-layer mounting position by about 0.5m, and slowly lifting the protective frame to the mounting position.

Sixthly, the protective frame is well installed in the floor, whether the bolt is locked in place or not is checked by using a torque wrench, the torque is controlled to be 45-65 KN.m, the whole circle of outer protective frame is completed according to the steps, and the abutted seam parts are connected by using turning plates to ensure that the circle is closed.

and when the fourth layer is constructed, the outer protection frames of the second layer are hung to the fourth layer for installation, and the operation method is the same as that of the third layer.

Dismantling of external protection frame

After the newly-installed frame body construction is finished and acceptance is checked and the upper layer of main body construction is finished, the upper layer of protection frame body can be dismantled. The dismantling is the reverse construction of the installation. The connection between the plates is firstly removed, and the nuts and other small objects are noticed to avoid falling. After the lifting appliance and the frame body are fixed, fixing nuts and gaskets are removed from the wall, the bolts are ejected out by using steel bars with the diameter of 16 degrees, and then the frame body is integrally lifted to the next layer of mounting point for next-step mounting.

the whole of outer protection frame is demolishd to main part construction completion rear, demolishs first penultimate floor protection frame when demolising. The top layer protection frame is temporarily reserved and used for external protection of roof construction, and the top layer protection frame is removed by a truck crane in the later period if a tower crane is removed. The method comprises the following steps of cleaning an object of an outer protection frame before dismantling, fixing a lifting hook of a tower crane at a lifting point of the outer protection frame by two persons, slowly lifting the lifting hook to enable a steel wire rope of the tower crane to be tight but not stressed, screwing a bolt by 2 persons positioned on the inner side, and lifting the whole unit protection frame to a specified ground place by the tower crane to be sorted and stacked tidily.

When the outer protection scaffold is dismantled, a warning area is set and a special person is assigned to guard the lower side of the outer protection scaffold, and irrelevant persons are prohibited from entering the dismantling dangerous area, so that safety is guaranteed.

before dismantling, the cross operation range is agreed with the personnel constructing the outer wall, the working surface is staggered, and the construction safety is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.