CN205875666U - A platform suspends in midair that is used for building eaves oral area position to be under construction - Google Patents

Abstract

The utility model relates to a construction field is decorated to the outer eaves of housing construction engineering, discloses a platform suspends in midair that is used for building eaves oral area position to be under construction, should suspend the platform in midair and move towards to constitute the zigzag shaped platform by a plurality of platform units along eaves mouth pitch arc, and each platform unit is linked to be whole through the connecting piece to hang on eaves mouth steel structure framework through the jib, suspend the platform in midair and be located eaves mouth below, keep the space that 1.5~1.8m is high between each platform unit and eaves mouth structure, platform unit lin bianchu is provided with the guardrail, and platform unit bottom and guardrail inboard are provided with the safety net. The utility model provides a building high altitude eaves oral area position decorate a construction difficult problem, utilize the building structure bearing, can ensure stably, safe, reliable, be applicable to the high altitude eaves oral area position of various shapes, span, lightly nimble, installation, dismantlement convenience improve work efficiency fast for the construction progress, and reduce intensity of labour.

Description

A suspension platform used for construction at the cornice of a building

technical field

The utility model relates to the technical field of exterior eave decoration construction of house construction engineering, in particular to a suspension platform used for the construction of the eaves of buildings.

Background technique

In the design of modern large-scale public buildings, the entrance is often designed as a tall arched doorway, which leads directly to the roof, and the top is made into an arched eaves. A virtual window is set between the door head and the eaves, and the entrance is highlighted by a clever combination of virtual and real. Expand visuals. Due to the large span, the arch eaves are generally made of steel structures, and the decoration of the eaves is usually wrapped with light boards. For example, a production center project is a two-way curved building. The entrance adopts an arched doorway that leads directly to the roof. 20.8m, the arch eaves are made of steel, and the decorative panels are made of aluminum plates.

At present, fastener-type steel pipe scaffolding or door-type steel pipe scaffolding is mainly used for the decoration construction of the outer eaves of houses and buildings. When erecting, it is necessary to install wall parts to connect with the main structure of the building to ensure the stability of the scaffolding. For open parts such as door openings, because there is nowhere to connect, only scaffolding can be used. Especially when carrying out the decoration construction of high-altitude cornices, due to the high height of the scaffolding, in order to meet the stability requirements of the scaffolding, it is necessary to widen the scaffolding body, increase the bottom area, and take various strengthening measures, resulting in difficulty in erecting and consuming a lot of scaffolding materials and The foundation is flat and the scaffolding is erected and disassembled manually, which greatly increases the construction cost, and due to the huge frame body, the erection cycle is long, delaying the construction progress and delaying the construction period. In addition, the tall and independent scaffolding has poor resistance to displacement and deformation because it cannot be connected with the building structure, especially when it is subjected to a large horizontal external force (such as when encountering a large wind load), it is easy to deform and lose stability, resulting in safety. Sex is greatly reduced.

Utility model content

In view of the shortcomings of the traditional scaffolding operation platform such as difficulty in erection, large investment, high cost, long construction period, and poor displacement and deformation resistance of the tall scaffolding, it cannot meet the construction requirements of modern building high-altitude roof eaves decoration, but in today's rapid development of architectural design , the construction technology must be followed up, and it is required to develop a new type of operation platform that meets the construction needs of such high-altitude special parts and is convenient, safe and economical.

The utility model provides a suspension platform used for the construction of the cornice of a building, which adopts the segmented combination form of hanging on the steel structure arch frame of the cornice, and provides an ideal carrying tool for the decoration and construction of the cornice at high altitude. , has the advantages of simple structure, safe construction, low investment, convenient and fast assembly and disassembly, and reusable use.

In order to solve the above technical problems, the utility model is realized through the following technical solutions:

A suspension platform used for the construction of the cornice part of a building. The suspension platform is composed of several platform units along the cornice arc to form a broken line platform. On the cornice steel structure skeleton; the suspended platform is located under the cornice, and a space of 1.5-1.8m high is maintained between each of the platform units and the cornice structure; A safety net is provided inside the guardrail.

Preferably, the platform unit includes a first platform unit arranged in the middle of the cornice span direction, a second platform unit respectively arranged at both ends of the first platform unit, and a third platform unit respectively arranged at the outer ends of the second platform unit unit;

The first platform unit and the second platform unit have the same structure, including a platform skeleton composed of main keels, longitudinal keels, and transverse keels welded. A platform panel made of expanded metal is laid on the platform skeleton. Stiffening bars for supporting the platform panel are arranged in the space of the platform frame, and the two ends of the stiffening bar are welded to the platform frame; Platform skeleton; the guardrail is arranged on the sides of the first platform unit and the second platform unit, and its bottom is welded to the platform skeleton;

The third platform unit includes a platform frame composed of main keel, longitudinal keel, and transverse keel welded. A platform panel made of Z-shaped steps processed by patterned steel plates is laid on the platform frame; the guardrail is arranged on the first The bottom of the three-platform unit is welded to the platform frame at the three sides.

Wherein, the main keel is arranged on the edge of the platform unit perpendicular to the span direction of the cornice, the longitudinal keel is parallel to the span direction of the cornice and arranged throughout the length, and the transverse keel is perpendicular to the span direction of the cornice and welded in sections between the longitudinal keels.

Preferably, the connecting piece is used for the connection between two adjacent platform units, which has a "C"-shaped structure formed by two upper and lower hooks in the same direction; the connecting piece is installed and welded with its lower hook On the main keel of the platform frame of the second platform unit at the connection between the first platform unit and the second platform unit, the upper hook is directly hooked on the first platform unit and the second platform unit when the platform unit is installed. The main keel of the platform frame of the first platform unit at the connection of the second platform unit; the connecting piece is installed and welded at the connection of the second platform unit and the third platform unit with its lower hook On the main keel of the platform frame of the third platform unit, the upper hook is directly hooked to the second part of the connection between the second platform unit and the third platform unit when the platform unit is installed. The main keel of the platform frame of the platform unit.

Preferably, the suspender is used to hang the first platform unit, the second platform unit and the third platform unit on the cornice steel structure skeleton; the upper end and the lower end of the suspender respectively have hooks , the hook at the upper end is hooked on the upper rod of the cornice steel structure skeleton, and the hook at the lower end is hooked on the main keel of the platform skeleton at the junction of the platform units; A round steel is welded at the place to form a closed ring, and the upper hook and the lower hook of the suspender are respectively tied to the upper part of the cornice steel structure skeleton and the main keel of the platform skeleton with lead wires.

The beneficial effects of the utility model are:

(1) The utility model uses suspension rods to hang the platform on the upper steel structure skeleton to form a suspended platform, thereby solving the problem of decoration and construction of the high-altitude cornice of the building. The suspended platform uses the building structure to bear the load, which can ensure stability and safety. ,reliable;

(2) The suspension platform of the utility model adopts a unitary combination method, which can form a broken-line operating platform according to the arc of the cornice, and is suitable for high-altitude cornices with various shapes and spans; the suspension platform is light and flexible, easy to install and disassemble Convenient and fast, compared with traditional fastener-type steel pipe scaffolding and portal-type steel pipe scaffolding, it saves a lot of materials and labor for erecting and dismantling scaffolding, improves work efficiency, speeds up construction progress, and reduces labor intensity;

(3) The suspension platform of the utility model is designed as a tool type, and the suspension rod and the connecting parts are all hooked parts, which avoids welding or bolt connection during installation, greatly reduces the installation process, greatly improves the work efficiency, and is beneficial to speed up the construction progress ;

(4) The suspension platform of the present utility model has simple structure, convenient material acquisition, convenient processing, and low material consumption. Greatly reduce the cost of use.

Description of drawings

Fig. 1 is the three-dimensional structural schematic diagram of suspension platform installation in the embodiment;

Fig. 2 is a schematic diagram of the installation facade structure of the suspension platform in the embodiment;

Fig. 3 is the partially enlarged schematic diagram of suspension platform installation in the embodiment;

Fig. 4 is the structural representation of the first platform unit;

Fig. 5 is the structural representation of the second platform unit;

Fig. 6 is a detailed large sample diagram of the first platform unit and the second platform unit;

Figure 7 is a detailed side sectional view of the first platform unit and the second platform unit;

Fig. 8 is a schematic structural view of the third platform unit;

Fig. 9 is a detailed large-scale drawing of the third platform unit;

Figure 10 is a side sectional view of a third platform unit;

Fig. 11 is a partial large-scale drawing of treaded steel steps in the third platform unit;

Fig. 12 is a large sample diagram of connection nodes between platform units;

Fig. 13 is a large sample diagram of connection nodes between suspenders, cornices and platforms.

In the figure, 1, the cornice; 2, the upper part of the cornice steel structure skeleton; 3, the first platform unit; 4, the second platform unit; 5, the third platform unit; 6, the suspender; 7, the guardrail; 8, the connection 9. Platform skeleton; 91. Main keel; 92. Transverse keel; 93. Longitudinal keel; 10. Platform panel; 11. Stiffener; 12. Bead; 13. Self-tapping screw.

detailed description

In order to further understand the content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

As shown in Figures 1 to 3, the present embodiment proposes a suspension platform for the construction of the cornice of a building, mainly comprising a platform unit, a connector 8, a boom 6, and a safety net. The suspension platform consists of several The platform units form a broken-line platform along the arc of the cornice 1, and each platform unit is connected as a whole through the connecting piece 8, and is hung on the steel structure skeleton of the cornice 1 through the suspender 6; the suspended platform is located under the cornice 1, and each platform unit Keep a space of 1.5-1.8m high between the cornice 1 structure, which is convenient for construction personnel to carry out decoration work on the cornice 1 part, and the construction materials are lifted to the suspension platform by the electric hoist installed on the cornice frame. The guardrail 7 is arranged at the edge of the platform unit, and a safety net is arranged at the bottom of the suspended platform and the inner side of the guardrail 7 .

(1) Platform unit: It is a vehicle for suspending the platform, adopting a segmented combination type, including the first platform unit 3, the second platform unit 4, and the third platform unit 5; the first platform unit 3 is arranged in the span direction of the cornice 1 In the middle, two second platform units 4 are respectively arranged at both ends of the first platform unit 3 , and two third platform units 5 are respectively arranged at the outer ends of the two second platform units 4 . Each platform unit is mainly composed of a platform frame 9 , a platform panel 10 and a guardrail 7 . Width of each platform unit = cornice 1 width + 1m.

in:

A. The first platform unit 3 and the second platform unit 4 have the same structure, including platform frame 9, platform panel 10, stiffener 11, bead 12, self-tapping screws 13, and guardrail 7, as shown in Figure 4-7.

The platform framework 9 is welded by 40×40×3mm square steel pipes and Φ80×3mm round steel pipes, wherein the Φ80×3mm round steel pipes are set on the lateral (perpendicular to the span direction of the cornice) edge of the platform framework 9 as the platform framework 9 The main keel 91; 40×40×3mm square steel pipes are used for the inner keel and longitudinal edge keel arranged horizontally and vertically on the platform frame 9, including the longitudinal keel 93 (parallel to the cornice span direction) and the transverse keel 92 (perpendicular to the cornice span direction) , the spacing between longitudinal keels 93 (inner keel transverse spacing) is not greater than 2100mm; the spacing between transverse keels 92 (inner keel longitudinal spacing) is not greater than 1400mm. Longitudinal keel 93 bars are arranged in full length, and its blanking length=platform skeleton 9 is parallel to the width of cornice 1 span direction-80mm×2 (80mm is the outer diameter of platform skeleton 9 side main keel 91 round steel pipes); Transverse keel 92 The bar is welded in sections between the adjacent longitudinal keels 93, and the blanking length=the center distance of the adjacent longitudinal keels 93-40mm (the side length of the 93 square steel pipes of the longitudinal keels). As shown in Fig. 6 and Fig. 7, in the space between the keels of the platform frame 9 (including the main keel 91, the longitudinal keel 93 and the transverse keel 92), vertical -3×30 flat steel stiffeners 11 are arranged, and the platform frame 9 It is on the same plane as the top surface of the stiffening bar 11. The spacing between the stiffeners 11 is not more than 700mm, and both ends of the stiffeners 11 are welded to the steel pipes of the keel (including the main keel 91 , the longitudinal keel 93 and the transverse keel 92 ) to support the platform panel 10 .

The platform panel 10 adopts a 5mm thick wear-resistant steel mesh, which is laid on the platform skeleton 9 .

The bead 12 is used to fix the platform panel 10 and the platform frame 9 . The bead 12 adopts -3×30 flat steel, which is arranged on the keel (including the main keel 91, the longitudinal keel 93 and the transverse keel 92) of the platform frame 9, which is pressed on the steel plate mesh of the platform panel 10, and is screwed with self-tapping screws 13 ( The spacing is not greater than 120mm) and the keel (including the main keel 91, the longitudinal keel 93 and the transverse keel 92) are fixed.

Guardrail 7 adopts the square steel pipe welding system of 40 * 3mm. Guardrail 7 height is 1.2m, and its pole spacing is not more than 2.1m, establishes two horizontal poles. The guardrail 7 is arranged on the edge of both sides of the platform unit, and the bottom of the vertical pole is welded with the longitudinal keel 93 of the edge of the platform frame 9 .

B. The third platform unit 5 includes a platform frame 9, a platform panel 10, and a guardrail 7, as shown in Figures 8-11.

The platform skeleton 9 adopts the same materials, specifications and layout as the first platform unit 3 and the second platform unit 4 .

The platform panel 10 is processed into a step shape by adopting a 5mm thick pattern steel plate, and is welded on the platform frame 9 at a distance of 350mm to form a Z-shaped step processed by the pattern steel plate, as shown in Fig. In most cases, construction workers can stand on the steps to operate and walk with the help of steps.

The guardrail 7 adopts the same material, specification, form and size as the first platform unit 3 and the second platform unit 4 . The guardrail 7 is arranged on the three sides of the third platform unit 5, and the bottom of the vertical pole is welded to the longitudinal keel 93 and the main keel 91 of the three sides of the platform frame 9.

(2) The connecting piece 8 is used for the connection between the platform units, and the setting distance is not more than 2.1m; the connecting piece 8 is made of Φ20 round steel bent into a "C" shape, as shown in Figure 12. Specifically, the connector 8 has two upper and lower hooks in the same direction, and the lower hook is used to install and weld the second platform unit 4 platform frame 9 main keel welded at the connection between the first platform unit 3 and the second platform unit 4 91, the upper hook is directly hooked to the main keel 91 of the platform frame 9 of the first platform unit 3 at the connection between the first platform unit 3 and the second platform unit 4 when the platform unit is installed. In the same way, the connecting piece 8 is installed and welded on the third platform unit 5 platform frame 9 main keel 91 at the junction of the second platform unit 4 and the third platform unit 5 with the lower hook, and the upper hook is directly hooked when the platform unit is installed. Hang on the main keel 91 of the platform frame 9 of the second platform unit 4 at the junction of the second platform unit 4 and the third platform unit 5 .

(3) The boom 6 is used to hang the first platform unit 3 , the second platform unit 4 and the third platform unit 5 on the steel structure skeleton of the cornice 1 . Suspension rod 6 is made of Φ28 round steel, its length = (1.5 ~ 1.8m) + thickness of cornice 1 + outer diameter of upper pole member 2 of cornice steel structure skeleton hooked at the upper end + outer diameter of platform skeleton 9 main keel 91 hooked at the lower end +60mm. The two ends of the suspender 7 are bent with 180° hooks (can be in the same direction or reversed). When in use, the upper and lower hooks are respectively hooked to the platform skeleton 9 main keel 91 at the junction of the upper part of the cornice steel structure skeleton and the platform unit. , and then lean against the outside of the hooked rod and weld a Φ10 round steel at the opening of the hook to form a closed ring to prevent the hook from deforming and slipping after being stressed, and connect the upper and lower hooks of the suspender 6 to the hook respectively. The upper rods 2 of the cornice steel structure skeleton and the 9 main keels 91 of the platform skeleton are bound with lead wires. The spacing between the suspension rods 6 is not greater than 3.5m.

(4) The safety net adopts a flame-retardant dense-mesh safety net with a mesh size of 2000 mesh/100cm ² . It is installed at the bottom of the suspended platform and inside the guardrail 7, and tied with the platform frame 9 with lead wires for the suspended platform. Horizontal protection and vertical protection.

The above-mentioned installation method of the suspended platform used for the construction of the eaves of the building is carried out according to the following steps:

1) Material procurement and blanking

(1) Round steel pipes and square steel pipes of the platform frame 9: purchase and inspect according to the design and standards, and blank according to the design size. Wherein, the longitudinal keel 93 rods of the platform frame 9 are arranged in full length, and the blanking length=platform frame 9 is parallel to the width of the cornice 1 span direction-80mm×2 (80mm is the outer diameter of the 9 main keel 91 steel pipes of the platform frame); Transverse keels 92 (perpendicular to the cornice span direction) rods are welded in sections between the longitudinal keels 93, and the blanking length=adjacent longitudinal keels 93 center distance-40mm (longitudinal keels 93 square steel pipe outer diameters).

(2) Electrode: The type of electrode should be the same as that of the base metal to be welded, the diameter should be selected according to the thickness of the weldment, and the quality should meet the relevant standards.

(3) Expanded metal mesh and checkered steel plate: purchased according to the design and standard, and cut into the shape and size required by the design. Wherein the platform panel 10 of the third platform unit 4 is processed into a Z-shaped step by patterned steel plate.

(4) Flat steel: purchase and cut according to design.

(5) Self-tapping screw 13: select according to design and standard requirements.

(6) Suspender 6 and connecting piece 8: Suspender 8 is made of Φ28mm round steel; connecting piece 8 is made of Φ20mm round steel, and the retest is carried out according to the regulations. The length of blanking = the length of suspender 8 (connecting piece 8) + 2 times the hook length.

(7) Safety net: The variety and specification should meet the requirements, and there must be a safety production license and a quality certificate, and the durability test will not penetrate.

2) Parts production

(1) Platform unit production

The process is as follows:

Cutting and blanking of platform skeleton 9 profiles → assembly → welding → installation of platform panel 10 → installation of guardrail 7 → inspection → painting.

in:

The internal transverse keel 92 and longitudinal keel 93 (40×40×3mm square steel pipe) of the platform frame 9 and the top surface of the flat steel stiffener 11 are on the same plane;

The platform panel 10 of the first platform unit 3 and the second platform unit 4 adopts expanded metal to lay flat on the platform frame 9, corresponding to the platform frame 9 keels (including the main keel 91, the longitudinal keel 93 and the transverse keel) on the expanded metal mesh top surface. 92) Set the flat steel bead 12 at the position, and fix it with the 9 keels of the platform frame (including the main keel 91, the longitudinal keel 93 and the transverse keel 92) with self-tapping screws 13 (the spacing is not greater than 120mm);

The platform panel of the third platform unit 5 adopts 5mm thick checkered steel plate to be processed into a step shape, and is welded on the platform frame 9 at a distance of 350mm;

Guardrail 7 is installed on the edge of platform unit, and its vertical bar bottom is welded with platform frame 9 edge keels (longitudinal keel 93 or longitudinal keel 93 and main keel 91).

(2) Processing and installation of connecting piece 8: "C" shaped round steel connecting piece 8 adopts cold-bending processing, requiring accurate shape and size. The connector 8 is installed and welded on the main keel 91 of the platform frame 9 of the second platform unit 4 at the junction of the first platform unit 3 and the second platform unit 4, and the third platform unit of the second platform unit 4 and the third platform unit 5 5 On the platform frame 9 on the main keel 91, the setting interval is not greater than 2.1m.

(3) Suspender 6 processing: cold-bending processing is required, and the shape and size are required to be accurate and the length consistent.

3) Suspension platform installation

The steps are:

According to the layout of each platform unit, determine the location of the upper lifting point of the boom 6 and the measurement positioning: the principle of selecting the location of the upper lifting point of the boom 6 is to keep the boom 6 in a vertical state as much as possible. The internal force in the rod 6 is parallel to the resultant force of the load on the platform unit, and the force is the smallest and the most stable. According to this principle, combined with the arrangement of the upper rod 2 of the cornice steel structure skeleton, the lifting point is selected at the upper part of the cornice steel structure skeleton On the rod 2; use the two ends of the rod as the hanging points of the outermost suspenders of the platform unit, and divide the middle part equally with a distance of no more than 3.5m to determine the hanging points of other suspenders in the middle and mark them.

Hang a safety flat net below the cornice 1.

Set up a temporary springboard: The springboard is made of 2 pieces of not less than 50mm thick scaffolding, the width is not less than 500mm, and is hung on the steel structure of cornice 1 with steel wire ropes for construction workers (tied with safety belts) to install a suspended platform on it.

Install the suspender 6: hoist the suspender 6 with a hand chain hoist, hook the hook at the upper end of the suspender 6 to the upper pole 2 of the cornice steel structure skeleton according to the marked point, and then lean against the outside of the hooked pole to bend A Φ10 round steel is ride-welded at the opening of the hook to form a closed ring, and the hook and the upper rod 2 of the cornice steel structure skeleton are bound with lead wires.

Install the platform unit: the installation sequence is: first platform unit 3 → second platform unit 4 → third platform unit 5 . First platform unit 3 is hoisted to installation position with crane earlier, and the main keel 91 of first platform unit 3 both sides is hooked with suspension rod 6 bottom crotches, makes it in place. Then the second platform unit 4 is hoisted, and the connector 8 welded on the second platform unit 4 is hooked on the first platform unit 3 platform frame 9 main keel 91 at the junction, and the second platform unit 4 other end is then used with a suspender 6 hooks to hang. After the second platform unit 4 is in place, hoist the third platform unit 5 at last, hook the connecting piece 8 on the platform frame 9 main keel 91 of the third platform unit 5 to the second platform unit 4 platform frame 9 main keel at the junction 91, the other end of the third platform unit 5 is hooked with the boom 6. Suspender rod 6 crotch openings place rides and welds a Φ10 round steel on the outer side of the rod that is attached to the hook, and the crotch is bound with lead wires to the platform skeleton 9 main keels 91 respectively.

Install the safety net: hang a dense mesh safety net on the inner side of the guardrail 7 of the suspension platform and the bottom of the platform unit, and tie the lead wire to the railing to fix it. Guardrail 7 bottoms are provided with toe-stop.

4) Suspended platform use

After the suspension platform is installed, it can only be put into use after passing the acceptance. Construction on the suspension platform belongs to high-altitude operations, and construction personnel must wear safety belts. The construction materials are hoisted to the suspended platform by the electric hoist installed on the cornice 1 structure.

Although the preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative and not restrictive. Under the enlightenment of the utility model, those of ordinary skill can also make many specific transformations without departing from the gist of the invention and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims (5)

1. A suspended platform for building cornice position construction, it is characterized in that, this suspended platform is formed broken-line platform along cornice arc trend by several platform units, and each described platform unit is connected as a whole by connector, And hang on the cornice steel structure skeleton through suspenders; the suspended platform is located under the cornice, and a space of 1.5-1.8m high is maintained between each of the platform units and the cornice structure; guardrails are set at the edges of the platform units, and the A safety net is provided at the bottom of the platform unit and inside the guardrail. 2. A suspension platform for building eaves construction according to claim 1, characterized in that, said platform unit comprises a first platform unit arranged in the middle of the cornice span direction, respectively arranged on said second platform unit. a second platform unit at both ends of a platform unit, and a third platform unit respectively arranged at the outer end of the second platform unit; The first platform unit and the second platform unit have the same structure, including a platform skeleton composed of main keels, longitudinal keels, and transverse keels welded. A platform panel made of expanded metal is laid on the platform skeleton. Stiffening bars for supporting the platform panel are arranged in the space of the platform frame, and the two ends of the stiffening bar are welded to the platform frame; Platform skeleton; the guardrail is arranged on the sides of the first platform unit and the second platform unit, and its bottom is welded to the platform skeleton; The third platform unit includes a platform frame composed of main keel, longitudinal keel, and transverse keel welded. A platform panel made of Z-shaped steps processed by patterned steel plates is laid on the platform frame; the guardrail is arranged on the first The bottom of the three-platform unit is welded to the platform frame at the three sides. 3. A suspension platform for construction at the cornice of a building according to claim 2, wherein the main keel is arranged on the edge of the platform unit perpendicular to the span direction of the cornice, and the longitudinal keel is parallel to The transverse keels are perpendicular to the span direction of the eaves and are welded between the longitudinal keels in sections. 4. A suspension platform for construction at the eaves of a building according to claim 2, wherein the connecting piece is used for the connection between two adjacent platform units, and has upper, lower and upper sides in the same direction. The "C" shape structure formed by the lower two hooks; the connecting piece is installed and welded on the platform skeleton of the second platform unit at the connection between the first platform unit and the second platform unit with its lower hook On the main keel of the first platform unit, the upper hook is directly hooked to the main keel of the platform skeleton of the first platform unit at the connection between the first platform unit and the second platform unit when the platform unit is installed; the connecting piece The lower hook is installed and welded on the main keel of the platform frame of the third platform unit at the connection between the second platform unit and the third platform unit, and the upper hook is installed on the platform unit. directly hooked to the main keel of the platform frame of the second platform unit at the connection between the second platform unit and the third platform unit. 5. A suspension platform for construction at the cornice of a building according to claim 2, wherein the suspension rod is used to connect the first platform unit, the second platform unit and the The third platform unit is hung on the cornice steel structure skeleton; the upper end and the lower end of the suspender rod have hooks respectively, the upper end hook is hooked on the upper rod of the cornice steel structure skeleton, and the lower end hook is hooked on the platform unit On the main keel of the platform frame at the junction; a round steel is welded on the outside of the hooked rod to form a closed ring at the opening of the hook, and the upper and lower hooks of the suspender are respectively connected to the hook. The upper rods of the hooked cornice steel structure framework and the main keel of the platform framework are bound with lead wires.