CN212836616U - Supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall - Google Patents

Abstract

The utility model discloses a supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall, include: the triangular support assemblies are provided with a plurality of groups; the first steel tread flat plate comprises a first support frame fixed at the top of each triangular support component; the first safety protective guard comprises a first wire mesh support frame and a first safety wire mesh, wherein the first wire mesh support frame is vertically fixed at the outer edge of the first support frame; a second steel tread deck comprising a second support frame positioned above the first support frame; and the second safety protective guard comprises a second wire mesh support frame which is vertically fixed at the outer edge of the second support frame and a second safety wire mesh which is laid on the second wire mesh support frame. The utility model discloses a supporting platform low cost, each subassembly can standardize mass production, also can improve the customization as required, has solved the scaffold frame construction difficult problem of assembly type building structure external maintenance cast-in-place position.

Description

Supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall

Technical Field

The utility model relates to a construction technical field, especially a supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall.

Background

The assembly type building is a construction direction of building industry entering modern production, changes the traditional cast-in-place construction operation, transfers a large amount of field operation work in the traditional construction mode to a factory for carrying out, processes and manufactures building components and accessories (such as floor slabs, wall plates, stairs, balconies and the like) in the factory, transports the components and accessories to a building construction site, and assembles and installs the components and accessories in the site through a reliable connection mode to form the building, thereby greatly reducing the construction period and labor cost. The prefabricated building mainly comprises a prefabricated concrete structure, a steel structure, a modern wood structure building and the like. The prefabricated concrete structure outer wall is generally formed by the combination of prefabricated component and cast-in-place concrete structure, and traditional cast-in-place outer wall structure construction generally adopts console mode steel pipe scaffold, cantilever frame and climbing frame to be under construction, but to the prefabricated concrete structure, the construction of local cast-in-place outer wall structure adopts console mode steel pipe scaffold, cantilever frame and climbing frame, not only improves the construction complexity, still increases manual work and cost, is unfavorable for embodying and giving play to the advantage of the standardized maintenance system of prefabricated building.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.

In view of the problems existing in the prior art, the utility model discloses a.

Therefore, the utility model aims at providing a supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall, it has solved the scaffold frame construction difficult problem that the cast-in-place position was maintained outward to the prefabricated building structure.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall which includes: the triangular support assemblies are vertically fixed on the cast-in-place concrete member and are provided with a plurality of groups; the first steel tread flat plate comprises a first support frame horizontally fixed at the top of each triangular support component and a first flat plate horizontally fixed on the first support frame; the first safety protective guard comprises a first wire mesh support frame and a first safety wire mesh, wherein the first wire mesh support frame is vertically fixed at the outer edge of the first support frame, and the first safety wire mesh is laid and fixed on the first wire mesh support frame; the second steel tread flat plate comprises a second supporting frame positioned above the first supporting frame and a second flat plate horizontally fixed on the second supporting frame; the second safety protective guard comprises a second wire mesh support frame and a second safety wire mesh, wherein the second wire mesh support frame is vertically fixed at the outer edge of the second support frame, and the second safety wire mesh is laid and fixed on the second wire mesh support frame; and the supporting columns are distributed and fixed at the bottom of the second supporting frame, the upper ends of the supporting columns are fixed with the bottom of the second supporting frame, and the lower ends of the supporting columns are connected to the first supporting frame.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the triangular support assembly comprises a vertical rod vertically fixed on a cast-in-place concrete member, a cross rod horizontally fixed at the top of the vertical rod and mutually perpendicular to the vertical rod, and an inclined rod arranged at the bottom of the cross rod; the two ends of the diagonal rod are respectively connected with the vertical rod and the cross rod, and form a right-angled triangle frame together.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the first support frame comprises a first longitudinal beam and a second longitudinal beam which are parallel to the cast-in-place concrete member, a first cross beam and a second cross beam which are perpendicular to the cast-in-place concrete member, and a plurality of connecting beams which are vertically fixed between the cross beams; the first longitudinal beam, the first cross beam, the second longitudinal beam and the second cross beam are sequentially connected and fixed end to end and jointly enclose to form a first outer frame of the first supporting frame; the first longitudinal beam is fixed with the inner end of the cross rod, and the second longitudinal beam is fixed with the outer end of the cross rod; the connecting beam divides the interior of the first outer frame into a plurality of sections, and the first platform plate comprises a plurality of laths fixed in each section.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the upper end of the vertical rod is welded with the inner end of the cross rod, and the included angle between the inclined rod and the vertical rod is not more than 45 degrees; the upper end and the lower end of the upright rod are both provided with first rectangular holes, and the inner end of the cross rod is provided with through holes which are through up and down; the upright posts penetrate through the first rectangular holes formed in the upright posts by adopting counter-pulling bolts and are connected and fixed with the cast-in-place concrete members; a plurality of first positioning holes which are through up and down are equidistantly arranged on the first longitudinal beam along the length direction of the first longitudinal beam; the through hole in the cross rod can be over against any one first positioning hole in the first longitudinal beam, and the through hole and the first positioning hole which are over against each other are penetrated through a first bolt so as to be fixedly connected.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: a connecting angle steel is fixed on the upper surface of the outer end of the cross rod, and after the first longitudinal beam and the inner end of the cross rod are fixed, the connecting angle steel can be just coated on the outer side surface of the second longitudinal beam; one side folded plate of the connecting angle steel is fixedly attached to the upper surface of the cross rod, and the other side folded plate is provided with a second rectangular hole; a plurality of second positioning holes are equidistantly arranged on the second longitudinal beam along the length direction of the second longitudinal beam, and the second positioning holes are horizontally and transversely through; the second rectangular hole in the connecting angle steel can be over against any second positioning hole in the second longitudinal beam, and a second bolt penetrates through the second rectangular hole and the second positioning hole which are over against each other to be fixedly connected.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the second support frame comprises third and fourth longitudinal beams parallel to the cast-in-place concrete member, third and fourth cross beams perpendicular to the cast-in-place concrete member, and a plurality of fifth cross beams vertically fixed between the longitudinal beams; the third longitudinal beam, the third cross beam, the fourth longitudinal beam and the fourth cross beam are sequentially connected and fixed end to end and jointly enclose to form a second outer frame of the second supporting frame; the second flat bedplate is fixed in the second outer frame; a first bearing plate is fixed at the bottom of each supporting column, and a first connecting plate is correspondingly arranged on each first bearing plate; the first supporting plate is positioned at the upper part of the first supporting frame, and the first connecting plate is positioned at the lower part of the first supporting frame; the first supporting plate and the first connecting plate are provided with mutually opposite elliptical holes, and the elliptical holes of the first supporting plate and the first connecting plate are fixedly connected through a third penetrating bolt, so that the first supporting frame and the first supporting frame are clamped together.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the first screen mesh support frame comprises a plurality of vertically extending stand columns, connecting rods connected between adjacent stand columns, a plurality of second bearing plates fixed at the bottom of the first screen mesh support frame, and second connecting plates in one-to-one correspondence with the second bearing plates; the second bearing plate is positioned at the upper part of the second longitudinal beam, and the second connecting plate is positioned at the lower part of the second longitudinal beam; the second bearing plate and the second connecting plate are provided with mutually opposite elliptical holes, and the elliptical holes of the second bearing plate and the second connecting plate are fixedly connected through a penetrating fourth bolt so that the second longitudinal beam is clamped by the second bearing plate and the second connecting plate together; the structure of the second screen support frame is the same as that of the first screen support frame, and the second screen support frame is fixed on the outer edge of the second support frame in the same installation mode as that of the first screen support frame.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the support platform further comprises a sliding extrusion assembly; the upright posts and the cross bars are made of channel steel, sliding channels are formed in the channel steel, and strip-shaped bulges protruding inwards are arranged at the outer edges of the legs at two sides of the channel steel; the bottom of the inner side of the channel steel is provided with positioning teeth arranged along the length direction of the channel steel; two side surfaces of the positioning teeth are respectively a positioning surface and a guide slope surface; the positioning surface is closer to a vertical intersection point of the vertical rod and the cross rod relative to the guide slope surface, and the positioning surface is a plane vertical to the length direction of the channel steel; the guide slope surface has a trend close to the positioning surface from inside to outside; the sliding extrusion assembly comprises a shell arranged in the sliding channel in a sliding mode, a positioning piece and an elastic piece, wherein one end of the positioning piece is movably arranged in the shell, the other end of the positioning piece can extend out of the shell, and one end of the elastic piece can extrude one end of the positioning piece out of the shell; sliding grooves matched with the strip-shaped bulges are formed in the two sides of the shell, and the sliding grooves can slide linearly in the sliding channel through the matching of the strip-shaped bulges and the sliding grooves; the shell is also provided with a window corresponding to the positioning piece, and one end of the positioning piece extends out of the window and can slide over the guide slope surface to be extruded on the positioning surface; the two ends of the diagonal rod are respectively embedded into the sliding channels of the vertical rod and the transverse rod, and the two ends of the diagonal rod are respectively extruded and limited through the sliding extrusion components which slide inwards, so that the diagonal rod is fixed between the vertical rod and the transverse rod.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the sliding extrusion assembly further comprises an adjusting piece and a driving piece; the positioning piece comprises a first section, a second section jointed at one end of the first section, and an extrusion head jointed at the other end of the first section; the extrusion head can extend out of the window; a convex rotating shaft is arranged at the joint of the first section and the second section and is embedded into a movable groove arranged on the inner side wall of the shell; the shell is provided with a threaded hole, the outer side wall of the adjusting piece is provided with an external thread matched with the threaded hole and can be rotatably arranged in the threaded hole, and the inner end of the adjusting piece is provided with an annular groove; one end of the driving piece is sleeved in the annular groove, and the other end of the driving piece is provided with a pull frame capable of enclosing the periphery of the second section; the width of the movable groove is matched with the outer diameter of the rotating shaft, and the length of the movable groove is greater than the outer diameter of the rotating shaft; the length direction of the movable groove is consistent with the length direction of the channel steel where the sliding extrusion assembly belongs.

As an optimal scheme suitable for supporting platform of prefabricated concrete structure cast in situ position protection of outer wall, wherein: the sliding extrusion assembly further comprises a backing rod; the adjusting piece is characterized in that a channel which is through along the length direction of the adjusting piece is arranged in the adjusting piece, the backing rod penetrates through the channel, a limiting head is arranged at the inner end of the backing rod, a pressing head is arranged at the outer end of the backing rod, a return spring is further arranged on the periphery of the backing rod, one end of the return spring is extruded on the pressing head, and the other end of the return spring is extruded on the outer side wall of the shell.

The utility model has the advantages that:

1. the utility model discloses a supporting platform low cost, each subassembly can standardize mass production, also can improve the customization as required.

2. The utility model discloses a supporting platform structural style is succinct clear, and each part equipment, dismantlement are convenient.

3. The utility model discloses a supporting platform can reuse, moreover can recycle, when resources are saved, has done the energy-concerving and environment-protective of work progress.

4. The utility model discloses a supporting platform light in weight, job site tower crane cooperation installation dismantle can, and with cast-in-place structural connection safety and stability nature high.

5. The utility model discloses a supporting platform can satisfy the demand of assembly type structure to the external frame construction, can direct hoist and mount on cast-in-place shear force wall after the rapid Assembly, embody assembly type structure's construction advantage in real time, solved the scaffold frame construction difficult problem of maintaining cast-in-place position outside the assembly type structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:

fig. 1 is a view of an installation scene of a support platform and a detailed view of a partial structure thereof.

Fig. 2 is a detailed view of the structure at a in fig. 1.

Fig. 3 is a detailed view of the structure at B in fig. 1.

FIG. 4 is a view showing the construction of the triangular support assembly.

FIG. 5 is a block diagram of a first steel tread deck.

Fig. 6 is a structural view of the second steel deck plate and a partial structural detail thereof.

Fig. 7 is a plan view of the second support frame.

FIG. 8 is an assembled structure view of the triangular support assembly and the first steel deck plate.

Fig. 9 is an assembly structural view of a first safety guard rail on a first steel deck plate.

Fig. 10 is an assembly structural view of the second steel deck plate.

Fig. 11 is an overall assembly structural view of the support platform.

FIG. 12 is a block diagram of an embodiment of a diagonal bar mounted using a sliding press assembly.

Fig. 13 is an internal structural view of a housing of the sliding compression assembly.

Fig. 14 is an exploded view of the triangular support assembly and its partial structural detail.

FIG. 15 is a cross-sectional view of the triangular support assembly and a detail view of a portion thereof.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Referring to fig. 1 to 7, for an embodiment of the present invention, the embodiment provides a support platform suitable for protection of a cast-in-place site of an exterior wall of a prefabricated concrete structure, which includes a plurality of triangular support assemblies 100 installed side by side on a cast-in-place concrete member (a cast-in-place shear wall), a first steel tread platform plate 200 installed at the top of the triangular support assemblies 100, a first safety guard rail 300 fixed at the periphery of the first steel tread platform plate 200, a second steel tread platform plate 400 located at the upper portion of the first steel tread platform plate 200, a second safety guard rail 500 fixed at the periphery of the second steel tread platform plate 400, and a support column 600 supported between the first steel tread platform plate 200 and the second steel tread platform plate 400.

The triangular support assembly 100 includes a vertical rod 101 vertically fixed to a cast-in-place concrete member, a horizontal rod 102 horizontally fixed to the top of the vertical rod 101 and perpendicular to the vertical rod, and a diagonal rod 103 provided at the bottom of the horizontal rod 102. The diagonal rods 103 are connected at both ends to the uprights 101 and the cross rods 102, respectively, and together form a right-angled triangular frame structure for supporting the superstructure together.

The utility model discloses in, first rectangle hole 101a has all been seted up at the upper and lower both ends of pole setting 101, and pole setting 101 adopts and passes the first rectangle hole 101a of seting up on it to stay bolt 104 to it is fixed to be connected with the reservation hole on the cast in situ concrete component, realizes the installation of triangular supports subassembly 100 on the cast in situ concrete component.

The upper end of the upright rod 101 is welded with the inner end of the cross rod 102 to form an L-shaped integrated structure; and the two ends of the diagonal rod 103 can be respectively welded with the vertical rod 101 and the cross rod 102 or detachably connected through bolts. Preferably, the angle between the diagonal 103 and the vertical 101 is not greater than 45 °.

The first steel tread deck 200 includes a first support frame 201 horizontally fixed to the top of each crossbar 102 and a first deck plate 202 horizontally fixed to the top of the first support frame 201. The utility model discloses a platform board 200 can provide a platform and the operating space of standing for constructor to the platform of support is provided for the installation of second steel is fixed to step on platform board 400.

The first safety guard rail 300 includes a first wire mesh support frame 301 vertically fixed to an outer edge of the first support frame 201, and a first safety wire mesh 302 paved and welded on one side of the first wire mesh support frame 301. The safety guard rail 300 is disposed at the periphery for safety protection of the constructor.

The second steel tread plate 400 includes a second support frame 401 positioned above the first support frame 201 and a second plate 402 horizontally fixed to the second support frame 401. The second steel deck plate 400 provides an operation platform for formwork erecting and casting work of the current layer of shear wall construction.

The second safety guard rail 500 includes a second wire mesh support frame 501 vertically fixed to an outer edge of the second support frame 401, and a second safety wire mesh 502 paved and welded on one side of the second wire mesh support frame 501. The second safety guard rail 500 may be constructed and installed in the same manner as the first safety guard rail 300 for safety protection of a worker.

A plurality of support columns 600 are distributed and fixed at the bottom of the second support frame 401, and extend vertically to support the second steel tread plate 400. The upper end of each support column 600 is fixed with the bottom of the second support frame 401, and the lower end is detachably connected to the first support frame 201.

It should be noted that: the utility model discloses in the actual installation and use, the first steel of triangular supports subassembly 100 and its upper portion is stepped on flat platen 200 and is installed and is located the shear force wall (of the current highest floor) of the superiors built, when the shear force wall of more upper strata is built in the needs construction again, can step on flat platen 400 through the second steel of installation on first steel is stepped on flat platen 200 and is regarded as an operation platform, constructor can stand and step on flat platen 400 or first steel at the second steel and step on flat platen 200 to (treat the building) this floor carry out formwork and pour the concrete operation.

The structure can be assembled, welded and directly hung on a cast-in-place shear wall, and is convenient and quick to install, so that the link of installing a scaffold on site is omitted, the construction period is shortened, and the manufacturing cost and the labor cost are reduced. Because supporting platform pierces through fixing on cast-in-place shear force wall through split bolt 104, consequently the later stage can directly be dismantled recycle, also can guarantee the simple swift of dismantlement process simultaneously.

Further, the first support frame 201 includes first and second longitudinal beams 201a and 201b parallel to the cast-in-place concrete member, first and second lateral beams 201c and 201d perpendicular to the cast-in-place concrete member, and a plurality of coupling beams 201e vertically fixed between the first and second lateral beams 201c and 201 d. The first longitudinal beam 201a, the first cross beam 201c, the second longitudinal beam 201b and the second cross beam 201d are all horizontal rod pieces, and the four horizontal rod pieces are sequentially connected and fixed end to end (fixed by welding) to jointly enclose a first outer frame K-1 of the first supporting frame 201. The connecting beam 201e is a horizontal rod parallel to the longitudinal beam, and two ends of the connecting beam are respectively welded and fixed with the first cross beam 201c and the second cross beam 201 d. Preferably, the first longitudinal beam 201a, the first cross beam 201c, the second longitudinal beam 201b, the second cross beam 201d and the connecting beam 201e of the present invention all adopt hollow square tubes.

The connecting beam 201e divides the inside of the first frame K-1 into a plurality of bar-shaped sections, and the first plate 202 includes a plurality of slats fixed in the respective sections (edges of the respective slats are welded to edges of the respective corresponding bar-shaped sections). Each flight of the first platform plate 202 may be a steel plate.

The first longitudinal beam 201a is fixed with the inner end of the cross bar 102 of each triangular support assembly 100, and the second longitudinal beam 201b is fixed with the outer end of the cross bar 102 of each triangular support assembly 100.

Further, the inner end of the cross rod 102 is provided with a through hole 102a which is through up and down; a plurality of first positioning holes 201a-1 which are vertically through are equidistantly arranged in the first longitudinal beam 201a along the length direction thereof, and the distance between the adjacent first positioning holes 201a-1 can be set to 100 mm. The through hole 102a of the cross bar 102 can be aligned with any one of the first positioning holes 201a-1 of the first longitudinal beam 201a, and the first bolt 203 penetrates through the through hole 102a and the first positioning hole 201a-1 aligned with each other to be fixedly connected, so that the first longitudinal beam 201a and the inner end of the cross bar 102 are fixed.

The connecting angle steel 105 is fixed on the upper surface of the outer end of the cross bar 102, and after the first longitudinal beam 201a and the inner end of the cross bar 102 are fixed, the connecting angle steel 105 can just cover the outer side surface of the second longitudinal beam 201 b. One side flap of the connecting angle steel 105 is attached to the upper surface of the cross bar 102 (may be fixed by welding), and the other side flap is provided with a second rectangular hole 105 a.

The second longitudinal beam 201b is provided with a plurality of second positioning holes 201b-1 at equal intervals along the length direction, the second positioning holes 201b-1 are horizontally and transversely through, and the distance between every two adjacent second positioning holes 201b-1 can be set to be 100 mm. The second rectangular hole 105a of the connecting angle steel 105 can be aligned with any one of the second positioning holes 201b-1 of the second longitudinal beam 201b, and a second bolt 204 passes through the second rectangular hole 105a and the second positioning hole 201b-1 aligned with each other to be fixedly connected, so that the second longitudinal beam 201b and the outer end of the cross bar 102 are fixed.

Because the utility model discloses a longeron on the first steel is stepped on the platform board 200 is all arranged and is had a plurality of locating holes, consequently, the triangular supports subassembly 100 can select in a flexible way or adjust mounted position.

The second support frame 401 includes third and fourth longitudinal beams 401a and 401b parallel to the cast-in-place concrete member, third and fourth cross beams 401c and 401d perpendicular to the cast-in-place concrete member, and a plurality of fifth cross beams 401e vertically fixed between the third and fourth longitudinal beams 401a and 401 b. The third longitudinal beam 401a, the third cross beam 401c, the fourth longitudinal beam 401b and the fourth cross beam 401d are all horizontal rods, and the four horizontal rods are sequentially connected and fixed end to end (fixed by welding) and jointly enclose a second outer frame K-2 of the second supporting frame 401. Preferably, the utility model discloses a third longeron 401a, third crossbeam 401c, fourth longeron 401b, fourth crossbeam 401d and fifth crossbeam 401e all adopt hollow square pipe, and two adjacent even intervals between the roof beam 201e are not more than 1000 mm.

The second platen plate 402 is fixed in the second frame K-2, and may be fixed to the fifth beam 401e by bolts or directly welded to the fifth beam 401e, and further, the edge of the second platen plate 402 may be welded to the edge of the second frame K-2. The second platen plate 402 may be a steel plate.

The first supporting frame 201 includes two parallel connecting beams 201e, and the connecting beams respectively face the third longitudinal beam 401a and the fourth longitudinal beam 401b of the second supporting frame 401. The upper end welded fastening of each support column 600 is in the second frame K-2 bottom of the second support frame 401 (preferably welded in the second frame K-2 corresponding to the position of the two ends of the cross beam), and the lower end is installed on the coupling beam 201e of the first support frame 201, specifically: a first bearing plate 601 is fixed at the bottom of each supporting column 600, a first connecting plate 602 is correspondingly arranged on each first bearing plate 601, the first bearing plate 601 is positioned at the upper part of the connecting beam 201e, and the first connecting plate 602 is positioned at the lower part of the connecting beam 201 e; the first supporting plate 601 and the first connecting plate 602 are provided with elliptical holes T facing each other, and the elliptical holes T of the first supporting plate 601 and the first connecting plate 602 are connected and fixed through a third penetrating bolt 603, so that the first supporting frame 201 and the third supporting frame 201 jointly clamp the connecting beam 201e, and the lower end of the supporting column 600 is mounted and fixed on the first steel tread flat plate 200.

Further, the first screen support frame 301 includes a plurality of vertical posts 301a arranged in a longitudinal direction and each extending vertically, a plurality of joint rods 301b horizontally welded between the adjacent vertical posts 301a, a plurality of second support plates 301c fixed to the bottom of the first screen support frame 301, and second connection plates 301d corresponding to the respective second support plates 301c one to one.

The second supporting plate 301c is welded and fixed at the bottom of the connecting rod 301b at the bottommost layer and is placed at the upper part of the second longitudinal beam 201b, and the second connecting plate 301d is positioned at the lower part of the second longitudinal beam 201 b; the second supporting plate 301c and the second connecting plate 301d are respectively provided with an elliptical hole T which is opposite to each other, and the elliptical holes T of the second supporting plate 301c and the second connecting plate 301d are tightened and fixed through a fourth bolt 301e which penetrates through the elliptical holes T, so that the second longitudinal beam 201b is clamped by the elliptical holes T and the second longitudinal beam, and the first safety guard rail 300 is integrally installed and fixed on the periphery of the first steel tread platform plate 200.

Meanwhile, the structure of the second screen support frame 501 is the same as that of the first screen support frame 301, and the second screen support frame 501 is fixed to the outer edge of the second support frame 401 in the same mounting manner as that of the first screen support frame 301 (i.e., the fourth longitudinal beam 401b is clamped by a bearing plate and a connecting plate at the bottom of the second screen support frame 501, and is tightened and fixed by a bolt).

Further, for improving the structural stability and structural strength of the triangular support component 100, the triangular support component 100 of the present invention further includes a reinforcing rod 106 assembled between the inclined rod 103 and the vertical rod 101. The reinforcing rod 106 may be a lath structure or a square tube, and both ends of the reinforcing rod may be fixedly connected (e.g. welded) or detachably connected to the diagonal rod 103 and the vertical rod 101, respectively.

Based on the above, the utility model discloses actual construction steps can be as follows:

firstly, preparation of construction

And (5) knowing project conditions and determining the mounting position of the platform by knowing construction drawings.

Deepening drawing

And arranging the platform according to a construction drawing, and drawing the component processing drawing of each component of the platform.

Third, platform assembly processing and manufacturing

The method comprises the following steps of blanking components according to a deepened drawing of each component of a supporting platform, welding, wherein the materials are Q235B, vertical rods and transverse rods of triangular supporting components are made of channel steel, inclined rods are square tubes, steel frameworks (supporting frames) of a steel pedal platform plate are made of square steel tubes, the platform plate is made of a pattern steel plate, vertical rods of safety protective guards are square tubes, and horizontal transverse rods are made of angle steel. The welding materials among the materials adopt E43 welding rod or CO₂And welding by gas shielded welding.

Fourthly, assembling each part of the supporting platform

1. Assembling the vertical rods, the cross rods and the inclined rods into triangular support frames as shown in figure 4;

2. installing and fixing the triangular support frames at the bottom of the first steel tread flat plate side by side, as shown in fig. 8;

3. installing a first safety guard rail at the periphery of the first steel tread plate, as shown in fig. 9;

4. welding the support columns at the bottom of the second steel tread flat plate, and installing a second safety guard rail at the periphery of the second steel tread flat plate, as shown in fig. 10;

5. the second steel tread deck is placed on the upper portion of the first steel tread deck and is connected with the first steel tread deck through the lower ends of the supporting columns in an installing mode, and the structure is shown in fig. 11.

Fifthly, hoisting of supporting platform

As shown in fig. 1, each vertical rod of the supporting platform is connected and fixed with a reserved hole on the cast-in-place shear wall (on the current uppermost layer) by using a split bolt.

Sixthly, the support platform is disassembled

After the supporting platform is installed, the construction of the layer of cast-in-place concrete formwork and concrete pouring is carried out, and after the layer of concrete meets the requirement of the side form demolding strength (forming the cast-in-place shear wall of the cost layer), a tower crane is utilized to cooperate with the disassembly of the supporting platform.

Hoisting of seven-layer and next-layer supporting platform

And (3) transferring and installing the supporting platform detached from the next cast-in-place shear wall on the reserved cavity of the (last-step built) layer of cast-in-place shear wall, and then performing the construction of formwork support and concrete pouring of the next layer of cast-in-place concrete.

With the upward pouring construction layer by layer, the six and seven construction steps can be repeated to carry out the recurrent dismounting and mounting of the supporting platform, so that the aim of circulating use of the supporting platform is fulfilled.

Therefore, to sum up, the utility model provides a scaffold support platform exempts from suitable for cast-in-place position protection of assembled concrete structure outer wall and operation integration, this support platform has replaced traditional scaffold and loaded down with trivial details installation procedure, and its each subassembly can be before getting into the scene all at mill's processing completion, and the scene directly carry out bolt assembly can, consequently the installation or dismantle swiftly, shortened the time limit for a project. In addition, the device can be repeatedly recycled, materials and labor are saved, and construction cost can be reduced.

As shown in fig. 12 to 15, in another embodiment, the supporting platform of the present invention further includes a sliding extrusion assembly 700, which can be used to fix the two ends of the diagonal rod 103 on the vertical rod 101 and the horizontal rod 102 respectively, so as to fix the diagonal rod 103 in the fast installation mode, thereby saving the installation time.

The utility model discloses a pole setting 101 and horizontal pole 102 all adopt channel-section steel C, and its inside sliding channel C-1 that has the cell type, and the outer fringe department symmetry of channel-section steel C's both sides shank (being the both sides board of channel-section steel C) is provided with the protruding C-2 of inside convex bar, and the extending direction of the protruding C-2 of bar is unanimous with channel-section steel C's length direction. The bottom of the inner side of each channel steel C is provided with positioning teeth C-3 which are arranged along the length direction of the channel steel C, the positioning teeth C-3 are tooth-shaped bulge structures which are arranged at equal intervals, and two side surfaces of each positioning tooth C-3 are respectively a positioning surface C-31 and a guide slope surface C-32; the positioning surface C-31 is closer to the vertical intersection point of the vertical rod 101 and the cross rod 102 relative to the guide slope surface C-32, and the positioning surface C-31 is a plane perpendicular to the length direction of the channel steel C; the guide slope surface C-32 has a tendency to approach the positioning surface C-31 from the inside to the outside so that the width of the outer end of the positioning tooth C-3 is smaller than the width of the inner end.

The utility model discloses a hollow square pipe of both ends shutoff can be adopted to down tube 103. Preferably, the thickness of the diagonal rod 103 is matched with the interval between the two strip-shaped bulges C-2, and the peripheral outline of the two ends of the diagonal rod 103 is an arc convex curved surface of a semi-cylindrical surface.

The sliding extrusion assembly 700 includes a housing 701 slidably disposed in the sliding channel C-1, a positioning member 702 having one end movably disposed in the housing 701 and the other end capable of extending out of the housing 701, and an elastic member 703 capable of extruding one end of the positioning member 702 out of the housing 701.

The housing 701 is a hollow box shape fitting the width of the sliding channel C-1, two sides of the housing are provided with sliding grooves 701a fitting the strip-shaped protrusions C-2, and the housing can slide linearly in the sliding channel C-1 through the fitting of the strip-shaped protrusions C-2 and the sliding grooves 701 a. The housing 701 is further provided with a window 701b corresponding to the positioning element 702, one end of the positioning element 702 is movably disposed in the housing 701, and the other end of the positioning element 702 can extend out of the window 701b under the extrusion of the elastic element 703, and the elastic element 703 is a metal elastic sheet fixed on the inner side wall of the housing 701. As shown in FIG. 15, the outward extending end of the positioning member 702 can slide over the guiding slope C-32 of the positioning tooth C-3 to rest on the positioning surface C-31 of the positioning tooth C-3. Based on this, under normal conditions, the sliding extrusion assembly 700 can only slide in one direction in the sliding channel C-1 through the cooperation of the protruding end of the positioning member 702 and the positioning tooth C-3, specifically: the sliding squeeze assembly 700 inside the upright 101 is only capable of one-way sliding upwards; the sliding squeeze assembly 700 within the crossbar 102 is only capable of unidirectional sliding inward (in a direction closer to the uprights 101).

When the inclined rod 103 is installed, two ends of the inclined rod 103 can be respectively embedded into the vertical rod 101 and the sliding channel C-1 of the cross rod 102; then, taking a sliding extrusion assembly 700 and sliding the sliding extrusion assembly upwards into the sliding channel C-1 of the vertical rod 101 to enable the sliding extrusion assembly to be propped against the lower end of the inclined rod 103; next, a sliding squeeze assembly 700 is again taken and slid inwardly into the slide channel C-1 of the crossbar 102 so that it abuts the upper end of the diagonal bar 103. Therefore, the inclined rods 103 are extruded and limited through the two sliding extrusion assemblies 700, and the inclined rods 103 can be rapidly installed between the vertical rods 101 and the cross rods 102. As shown in fig. 12, since the inclined rod 103 is obliquely arranged, a triangular stabilizing system can be formed after two ends of the inclined rod are tightened, so that the installation is fast and the structural stability can be ensured. Preferably, the housing 701 is a detachable structure including a hollow case opened at one side and a cover plate capable of being fixed at the opened side of the hollow case by screws.

Further, the sliding squeeze assembly 700 further includes an adjusting member 704 and a driving member 705.

The positioning member 702 includes a first segment 702a, a second segment 702b engaged with one end of the first segment 702a, and a pressing head 702c engaged with the other end of the first segment 702 a. The first section 702a and the second section 702b are both plate structures, and the second section 702b is bent inward relative to the first section 702 a. The extrusion head 702C has a tendency to flex outwardly relative to the first section 702a, and the extrusion head 702C is able to extend out of the window 701b to engage the positioning teeth C-3, acting as a detent.

The joint of the first section 702a and the second section 702b is provided with a convex rotating shaft 702d, the rotating shaft 702d is embedded in a movable groove 701c provided on the inner side wall of the housing 701, and at least self-rotation can occur in the movable groove 701 c. Preferably, a pair of protruding shafts 702d are symmetrically disposed on two sides of the joint of the first section 702a and the second section 702b, and correspondingly, a pair of movable grooves 701c are symmetrically disposed on the inner sidewall of the housing 701.

The housing 701 is provided with a screw hole 701d that is through from the inside to the outside, and the outer side wall of the adjuster 704 is provided with a male screw that fits into the screw hole 701d and is rotatably provided in the screw hole 701 d. In addition, an annular groove 704a is provided on one end of the adjusting member 704 projecting into the housing 701.

One end of the driving member 705 is a connection ring 705b engaged with the annular groove 704a and is sleeved in the annular groove 704a (capable of relatively rotating) through the connection ring 705b, the other end of the driving member 705 is a pull frame 705a capable of enclosing the periphery of the second section 702b, and the inner width of the pull frame 705a is engaged with the width of the second section 702 b. Therefore, when the adjusting member 704 is rotated, the adjusting member 704 can drive the driving member 705 to move up and down together, but the driving member 705 cannot rotate together with the adjusting member 704 due to the limitation of the second section 702b on the pull frame 705 a.

The elastic member 703 is a metal elastic sheet fixed on the inner side wall of the housing 701, and presses the inner side surface of the extrusion head 702c, so as to push the extrusion head 702c out of the window 701b, and meanwhile, the elastic member has a tendency to push the extrusion head 702c away from the adjusting member 704. Therefore, when the adjusting member 704 is rotated and pulled downward by the pulling frame 705a, the positioning member 702 can rotate around the rotating shaft 702d as a rotating center, so that the pressing head 702C can press the spacing side J between the adjacent positioning teeth C-3 more tightly to prevent the positioning member 702 from releasing.

Preferably, the width of the movable groove 701c is matched with the outer diameter of the rotating shaft 702d, and the length of the movable groove 701c is greater than the outer diameter of the rotating shaft 702 d; the length direction of the movable slot 701C is the same as the length direction of the channel steel C where the sliding extrusion assembly 700 is located. Therefore, the rotation shaft 702d can slide to some extent in the movable groove 701c as well as rotate itself in the movable groove 701 c. Based on this, according to the above process: when the extrusion head 702C presses on the spacing side J between the adjacent positioning teeth C-3, if the adjusting member 704 is continuously rotated, due to the arrangement of the movable groove 701C, the pulling frame 705a can also continuously pull the second section 702b downward, so that the vertical pressing force of the extrusion head 702C on the elastic member 703 is increased, and the extrusion head 702C can be pressed on the spacing side J between the adjacent positioning teeth C-3 with greater force under the guidance of the elastic member 703; the adjusting member 704 is still rotated continuously, when the extrusion head 702C contacts the positioning surface C-31 of the positioning tooth C-3 below the extrusion head, the pulling frame 705a cannot pull the second section 702b continuously downwards, and the extrusion head 702C can be tightly pressed on the positioning surface C-31; if the adjusting member 704 is rotated continuously, the positioning member 702 can not move continuously any more, so that the adjusting member 704 can reversely drive the housing 701 to slide upwards slightly through the threaded fit with the threaded opening 701d, so that the housing 701 tightly presses the end of the diagonal rod 103, the two ends of the diagonal rod 103 are clamped and limited, and the final stability of the structure is ensured. The maximum effect of the stroke action is as follows: since the diagonal rod 103 is pushed and clamped by the sliding pressing assemblies 700 at both ends thereof, and the sliding pressing assemblies 700 are positioned by the limitation of the pressing heads 702C between the adjacent positioning teeth C-3, the fixed positions of the sliding pressing assemblies 700 in the sliding channel C-1 are interval and discontinuous, so that when the sliding pressing assemblies 700 press the ends of the diagonal rod 103 with a space for movement, the housing 701 can be driven reversely by the rotating adjusting member 704 to press the ends of the diagonal rod 103, so as to achieve the final structural stability.

Further, the sliding compression assembly 700 further comprises a retreat rod 706 with a rod-shaped structure, which is used for unlocking and retreating the sliding compression assembly 700 which originally can only move in one direction in the sliding channel C-1, so as to facilitate the detachment and recovery of the sliding compression assembly 700 and the slant rod 103.

The interior of the adjustment member 704 has a passage 704b therethrough along its length, the passage 704b fitting to the outer diameter of the parking rod 706. The retreating rod 706 penetrates through the channel 704b, a limiting head 706a is arranged on the inner end of the retreating rod, a pressing head 706b is arranged on the outer end of the retreating rod, and the limiting head 706a and the pressing head 706b are of disc-shaped structures with outer diameters larger than the outer diameter of the main body of the retreating rod 706.

A return spring 707 is further disposed on the periphery of the retraction lever 706, and one end of the return spring 707 presses the pressing head 706b, and the other end presses the outer sidewall of the housing 701. In a natural state, the return spring 707 enables the stopper 706a to be pressed and caught on the inner end of the adjusting member 704.

When the sliding pressing assembly 700 and the diagonal rod 103 need to be detached, the adjusting member 704 can be rotated reversely to gradually enter the inside of the housing 701, so that the pulling action on the second section 702b can be released by the pulling frame 705 a; at this time, if the pressing head 706b of the retraction rod 706 is pressed manually, the limiting head 706a can push the second section 702b to rotate reversely, so that the pressing head 702C retracts into the window 701b, and the limitation of the positioning teeth C-3 is released, therefore, the sliding pressing assembly 700 can slide out along the sliding channel C-1, and the detachment is realized.

Further, for adapting to the detachable assembly structure of the sliding extrusion assembly 700, the two ends of the reinforcing rod 106 of the present invention are detachably connected to the diagonal rod 103 and the vertical rod 101, respectively.

As in fig. 14, in one embodiment: the utility model discloses a be fixed with first screw rod 103a on the both sides wall of down tube 103, the both sides of pole setting 101 are provided with connecting seat 101b, are provided with first connecting hole 101b-1 on the connecting seat 101 b. The reinforcing bar 106 has a strip plate structure, and is made of a steel plate having one end provided with a second screw 106a fitted to the first coupling hole 101b-1 and the other end provided with a second coupling hole 106b fitted to the first screw 103 a. After the reinforcing rod 106 passes through the first connecting hole 101b-1 on the connecting seat 101b through the second screw 106a, the reinforcing rod can be limited and fixed through a nut; after the reinforcing rod 106 is sleeved on the first screw 103a of the inclined rod 103 through the second connecting hole 106b, the reinforcing rod 106 can be limited and fixed through a nut, and finally the detachable connection of the reinforcing rod 106 is realized.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a supporting platform suitable for protection of cast-in-place position of prefabricated concrete structure outer wall which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the triangular support assemblies (100) are vertically fixed on the cast-in-place concrete member and are provided with a plurality of groups;

a first steel tread platform plate (200) which comprises a first supporting frame (201) horizontally fixed at the top of each triangular supporting component (100) and a first platform plate (202) horizontally fixed on the first supporting frame (201);

the first safety guard rail (300) comprises a first wire mesh support frame (301) and a first safety wire mesh (302), wherein the first wire mesh support frame (301) is vertically fixed at the outer edge of the first support frame (201), and the first safety wire mesh (302) is paved and fixed on the first wire mesh support frame (301);

a second steel tread deck (400) comprising a second support frame (401) above the first support frame (201) and a second deck plate (402) horizontally secured to the second support frame (401);

the second safety guard rail (500) comprises a second wire mesh support frame (501) and a second safety wire mesh (502), wherein the second wire mesh support frame (501) is vertically fixed at the outer edge of the second support frame (401), and the second safety wire mesh (502) is paved and fixed on the second wire mesh support frame (501); and the number of the first and second groups,

the supporting columns (600) are distributed and fixed at the bottom of the second supporting frame (401) in a plurality, the upper ends of the supporting columns (600) are fixed with the bottom of the second supporting frame (401), and the lower ends of the supporting columns are connected to the first supporting frame (201).

2. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 1, wherein: the triangular support assembly (100) comprises a vertical rod (101) vertically fixed on a cast-in-place concrete member, a cross rod (102) horizontally fixed at the top of the vertical rod (101) and mutually perpendicular to the vertical rod, and an inclined rod (103) arranged at the bottom of the cross rod (102); two ends of the inclined rod (103) are respectively connected with the vertical rod (101) and the cross rod (102) to form a right-angled triangular frame together.

3. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 2, wherein: the first support frame (201) comprises a first longitudinal beam (201a) and a second longitudinal beam (201b) which are parallel to the cast-in-place concrete member, a first cross beam (201c) and a second cross beam (201d) which are perpendicular to the cast-in-place concrete member, and a plurality of connecting beams (201e) which are vertically fixed between the cross beams; the first longitudinal beam (201a), the first cross beam (201c), the second longitudinal beam (201b) and the second cross beam (201d) are sequentially connected end to end and fixed together to form a first outer frame (K-1) of the first supporting frame (201); the first longitudinal beam (201a) is fixed with the inner end of the cross rod (102), and the second longitudinal beam (201b) is fixed with the outer end of the cross rod (102);

the connecting beam (201e) divides the inside of the first outer frame (K-1) into a plurality of sections, and the first platform plate (202) comprises a plurality of laths fixed in each section.

4. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 3, wherein: the upper end of the vertical rod (101) is welded with the inner end of the cross rod (102), and the included angle between the inclined rod (103) and the vertical rod (101) is not more than 45 degrees; the upper end and the lower end of the upright rod (101) are both provided with first rectangular holes (101a), and the inner end of the cross rod (102) is provided with through holes (102a) which are through up and down;

the upright rod (101) penetrates through a first rectangular hole (101a) formed in the upright rod by adopting a split bolt (104) and is connected and fixed with a cast-in-place concrete member;

a plurality of first positioning holes (201a-1) which are through up and down are equidistantly arranged on the first longitudinal beam (201a) along the length direction of the first longitudinal beam; the through hole (102a) in the cross rod (102) can be opposite to any one first positioning hole (201a-1) in the first longitudinal beam (201a), and a first bolt (203) penetrates through the through hole (102a) opposite to each other and the first positioning hole (201a-1) so as to be fixedly connected.

5. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 3 or 4, wherein: a connecting angle steel (105) is fixed on the upper surface of the outer end of the cross rod (102), and after the first longitudinal beam (201a) and the inner end of the cross rod (102) are fixed, the connecting angle steel (105) can be just covered on the outer side surface of the second longitudinal beam (201 b);

one side folded plate of the connecting angle steel (105) is fixedly attached to the upper surface of the cross rod (102), and the other side folded plate is provided with a second rectangular hole (105 a);

a plurality of second positioning holes (201b-1) are arranged on the second longitudinal beam (201b) at equal intervals along the length direction of the second longitudinal beam, and the second positioning holes (201b-1) are through along the horizontal transverse direction; the second rectangular hole (105a) in the connecting angle steel (105) can be over against any one second positioning hole (201b-1) in the second longitudinal beam (201b), and a second bolt (204) penetrates through the second rectangular hole (105a) and the second positioning hole (201b-1) which are over against each other to be fixedly connected.

6. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in any one of claims 3 to 4, wherein: the second support frame (401) comprises third and fourth longitudinal beams (401a, 401b) parallel to the cast-in-place concrete member, third and fourth transverse beams (401c, 401d) perpendicular to the cast-in-place concrete member, and a plurality of fifth transverse beams (401e) vertically fixed between the longitudinal beams; the third longitudinal beam (401a), the third cross beam (401c), the fourth longitudinal beam (401b) and the fourth cross beam (401d) are sequentially connected end to end and fixed together to form a second outer frame (K-2) of the second supporting frame (401); the second platform plate (402) is fixed in the second outer frame (K-2);

a first bearing plate (601) is fixed at the bottom of each supporting column (600), and a first connecting plate (602) corresponds to each first bearing plate (601); the first supporting plate (601) is positioned at the upper part of the first supporting frame (201), and the first connecting plate (602) is positioned at the lower part of the first supporting frame (201); the first supporting plate (601) and the first connecting plate (602) are provided with mutually opposite elliptical holes (T), and the elliptical holes (T) of the first supporting plate and the first connecting plate are fixedly connected through a third penetrating bolt (603), so that the first supporting frame (201) is clamped by the first supporting plate and the first supporting plate together.

7. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 6, wherein: the first screen support frame (301) comprises a plurality of vertical columns (301a) extending vertically, connecting rods (301b) connected between the adjacent vertical columns (301a), a plurality of second bearing plates (301c) fixed at the bottom of the first screen support frame (301), and second connecting plates (301d) corresponding to the second bearing plates (301c) one by one; the second bearing plate (301c) is positioned at the upper part of the second longitudinal beam (201b), and the second connecting plate (301d) is positioned at the lower part of the second longitudinal beam (201 b); the second bearing plate (301c) and the second connecting plate (301d) are respectively provided with an oval hole (T) which is opposite to each other, and the oval holes (T) of the second bearing plate and the second connecting plate are connected and fixed through a fourth penetrating bolt (301e), so that the second longitudinal beam (201b) is clamped by the second bearing plate and the second connecting plate together;

the structure of the second screen support frame (501) is the same as that of the first screen support frame (301), and the second screen support frame (501) is fixed on the outer edge of the second support frame (401) in the same installation mode as that of the first screen support frame (301).

8. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in any one of claims 2 to 4 or 7, wherein: further comprising a sliding squeeze assembly (700);

the upright stanchions (101) and the cross bars (102) are both made of channel steel (C), sliding channels (C-1) are arranged in the channel steel (C), and strip-shaped bulges (C-2) protruding inwards are arranged at the outer edges of legs at two sides of the channel steel (C); the bottom of the inner side of the channel steel (C) is provided with positioning teeth (C-3) arranged along the length direction of the channel steel; two side surfaces of the positioning tooth (C-3) are respectively a positioning surface (C-31) and a guide slope surface (C-32); the positioning surface (C-31) is closer to the vertical intersection point of the vertical rod (101) and the cross rod (102) relative to the guide slope surface (C-32), and the positioning surface (C-31) is a plane vertical to the length direction of the channel steel (C); the guide slope surface (C-32) has a trend of approaching to the positioning surface (C-31) from inside to outside;

the sliding extrusion assembly (700) comprises a shell (701) arranged in the sliding channel (C-1) in a sliding mode, a positioning piece (702) with one end movably arranged in the shell (701) and the other end capable of extending out of the shell (701), and an elastic piece (703) capable of extruding one end of the positioning piece (702) out of the shell (701);

sliding grooves (701a) matched with the strip-shaped protrusions (C-2) are formed in the two sides of the shell (701), and the sliding grooves (701a) can slide linearly in the sliding channel (C-1) through the matching of the strip-shaped protrusions (C-2) and the sliding grooves (701 a); the shell (701) is also provided with a window (701b) corresponding to the positioning piece (702), one end of the positioning piece (702) extends out of the window (701b) and can slide over the guide slope surface (C-32) to be pressed on the positioning surface (C-31);

two ends of the diagonal rod (103) are respectively embedded into the sliding channels (C-1) of the vertical rod (101) and the transverse rod (102), and the two ends of the diagonal rod (103) are respectively extruded and limited through the sliding extrusion components (700) which slide inwards, so that the diagonal rod (103) is fixed between the vertical rod (101) and the transverse rod (102).

9. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 8, wherein: the sliding squeeze assembly (700) further comprises an adjustment member (704) and a drive member (705);

the positioning member (702) comprises a first section (702a), a second section (702b) jointed at one end of the first section (702a), and a pressing head (702c) jointed at the other end of the first section (702 a); the extrusion head (702c) being able to project beyond the window (701 b); a convex rotating shaft (702d) is arranged at the joint of the first section (702a) and the second section (702b), and the rotating shaft (702d) is embedded into a movable groove (701c) arranged on the inner side wall of the shell (701);

a threaded opening (701d) is formed in the shell (701), an external thread matched with the threaded opening (701d) is arranged on the outer side wall of the adjusting piece (704), the adjusting piece can be rotatably arranged in the threaded opening (701d), and an annular groove (704a) is formed in the inner end of the adjusting piece (704);

one end of the driving piece (705) is sleeved in the annular groove (704a), and the other end of the driving piece is provided with a pull frame (705a) capable of enclosing the periphery of the second section (702 b);

the width of the movable groove (701c) is matched with the outer diameter of the rotating shaft (702d), and the length of the movable groove (701c) is greater than the outer diameter of the rotating shaft (702 d); the length direction of the movable groove (701C) is consistent with the length direction of a channel steel (C) where the sliding extrusion assembly (700) belongs to.

10. The support platform suitable for protecting the cast-in-place position of the outer wall of the prefabricated concrete structure as claimed in claim 9, wherein: the sliding squeeze assembly (700) further comprises a backstop lever (706);

the adjusting piece (704) is internally provided with a through channel (704b) along the length direction, the backing rod (706) penetrates through the channel (704b), the inner end of the backing rod is provided with a limiting head (706a), the outer end of the backing rod is provided with a pressing head (706b), a return spring (707) is further arranged on the periphery of the backing rod (706), one end of the return spring (707) is extruded on the pressing head (706b), and the other end of the return spring is extruded on the outer side wall of the shell (701).

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