CN116201372A - Beam side overhanging type assembly and unloading platform and construction method - Google Patents

Abstract

The invention relates to a beam side overhanging type assembling and unloading platform and a construction method thereof, comprising a pre-buried system, an assembling type platform and a connecting system; the embedded system comprises an embedded bolt sleeve and an embedded pull ring which are arranged on Liang Ce; the assembled platform comprises a bearing platform, an enclosure structure and a rear assembly member; the enclosure structure is arranged on the left side surface, the right side surface and the front side surface of the bearing platform; the front part of the side of the assembled platform is provided with a drawknot pull ring; an end anchor plate is arranged at the rear end of the assembled platform; the connecting system comprises a high-strength bolt and a drawknot rope; the end anchor plate is fixed on the embedded bolt sleeve through a high-strength bolt, so that the lower end of the assembled platform is fixed with the beam side; the front end and the rear end of the drawknot rope are respectively drawed between the embedded pull ring and the drawknot pull ring, so that the horizontal drawknot of the assembled platform is arranged on the beam side. The beam side overhanging type assembling and unloading platform is suitable for a bent structure, and the designed rear assembling member can prevent collision with the existing frame body in the hoisting process, is quick in construction, saves resources and can effectively ensure construction safety.

Description

A beam-side cantilevered assembled unloading platform and its construction method

technical field

The invention relates to the field of engineering project construction, in particular to a beam-side cantilevered assembly and unloading platform and a construction method.

Background technique

A large number of concrete bent structures are often designed in engineering projects. In order to ensure the transfer of materials related to masonry projects, door and window projects, decoration projects and construction waste, it is necessary to design unloading platforms for such structures.

The bent frame structure generally has a large span and a high height. In order to speed up the construction progress, generally only the reinforced concrete bent frame structure is constructed in the early stage. materials, are inefficient and labor intensive.

Therefore, due to the high building height and the structural characteristics of the bent frame structure with only beams and columns without floor slabs, the floor-standing unloading platform and the traditional cantilevered unloading platform cannot meet the erection requirements. At the same time, the traditional unloading platform is basically in the form of a whole. If multiple unloading platforms are needed on site, the unloading platform will occupy a large space for stacking, and only one can be transported at a time, causing tension in the storage yard. , low transportation efficiency, waste of resources.

Moreover, the cantilevered unloading platform in the prior art usually fixes the main girder of the unloading platform extending to a certain length in the building on the floor of the building through different forms, or fixes it outside the structure through a window opening. On the wall, this obviously does not apply to the concrete bent structure with only beams and columns, no floor slab and masonry behind the infill wall.

Contents of the invention

The purpose of the present invention is to provide a beam-side cantilevered assembled unloading platform and a construction method for the characteristics of the bent frame structure and the shortcomings of the integral unloading platform. The unloading platform does not need to be anchored on the building floor, and the construction is quick , Save resources and effectively ensure construction safety, especially suitable for bent frame structures and avoid conflicts with existing frames.

To achieve the above object, the technical solution provided by the invention is:

A beam-side cantilevered assembly unloading platform, including a pre-embedded system, an assembled platform and a connection system;

The pre-embedded system includes pre-embedded bolt sleeves and pre-embedded pull rings installed on the beam side, and the pre-embedded bolt sleeves and pre-embedded pull rings are left and right groups;

The assembled platform includes a load-bearing platform, an enclosure structure and a rear assembly component; the front of the load-bearing platform has a first platform surface, and the rear assembly component is installed at the rear of the load-bearing platform to form a second platform surface. The second platform surface is combined into the overall platform surface of the assembled platform, and the enclosure structure is installed on the left side, right side and front side of the load-bearing platform; a set of tie-ties is installed on the left and right front parts of the assembled platform The two sets of tie and pull rings correspond to the positions of the left and right two sets of pre-embedded pull rings on the beam side respectively; a set of end anchor plates are respectively installed at the left and right rear ends of the assembled platform, and the two sets of end anchor plates are connected to the beam The positions of the left and right two sets of embedded bolt casings on the side correspond to each other;

The connection system includes high-strength bolts and tie ropes; there are left and right groups of high-strength bolts, which correspond to the end anchor plates and embedded bolt casings of the left and right groups respectively, and the end anchor plates are fixed by high-strength bolts On the pre-embedded bolt casing, the lower end of the assembled platform is fixed to the beam side; there are left and right two groups of tie ropes, corresponding to the left and right groups of pre-embedded pull rings and tie pull rings, and the tie ropes The front and rear ends of the platform are respectively tied between the embedded pull ring and the tie pull ring, so that the horizontal tie of the assembled platform is on the beam side.

In order to optimize the above technical solutions, the specific measures taken also include:

Each group has 4 embedded bolt casings, high-strength bolts, and bolt holes on the end anchor plate; each group has 2 embedded pull rings, tie pull rings, and tie ropes; The force platform, enclosure structure and post-assembly components are assembled by bolts.

The load-bearing platform includes a shaped steel main beam, a shaped steel secondary beam and a platform panel. The shaped steel main beam includes a left shaped steel main beam on the left side and a right shaped steel main beam on the right side. The front part is connected by several transverse profiled steel secondary beams, and the platform panel is installed on the left profiled steel main beam, the right profiled steel main beam and the profiled steel secondary beam to form the first platform surface at the front of the assembled platform.

Further, two groups of end anchor plates are respectively installed on the rear end surfaces of the left steel girder and the right steel girder.

Further, the load-bearing platform also includes lifting rings and welding auxiliary plates, and the lifting rings are installed on the four corners of the first platform surface for hoisting of the assembled platform; the welding auxiliary plates include the first welding auxiliary plate, the second Welding auxiliary plate, the first welding auxiliary plate is located on the outside of the shaped steel main beam, corresponding to the position of the tie ring, the number of the first welding auxiliary plate is corresponding to the number of tie rings, and the tie ring is installed on the The outer side of the shaped steel main girder; the second welding auxiliary plate is located on the inner side of the shaped steel main girder, and there are four second welding auxiliary plates corresponding to the lower positions of each hoisting ring. The plate is installed on the inner side of the steel girder.

Further, the post-assembly component includes a post-assembly panel and a post-assembly secondary beam, the post-assembly sub-beam is installed transversely at the rear between the left section steel main beam and the right section steel main beam, and the rear assembly panel is installed on the left section steel main beam, the right section steel section The main beam and the rear assembled secondary beam constitute the second platform surface at the rear of the assembled platform; the rear assembled components are arranged within 1.5m of the cantilevered assembled unloading platform on the beam side close to the side of the building frame.

Further, the load-bearing platform also includes a reserved plate for the post-assembly secondary beam. The reserved plate for the post-assembly secondary beam is installed on the inner side of the rear part of the left-shaped steel main beam and the right-shaped steel main beam, and the position corresponds to the installation position of the post-assembled secondary beam. The post-assembly secondary beam is installed on the left steel main beam and the right steel main beam through the post-assembly secondary beam reserved plate; the post-assembly secondary beam reserved plate is divided into several groups on the left and right sides, corresponding to the number of post-assembly secondary beams.

Further, the position of the embedded pull ring is outside the horizontal projection of the assembled platform; the positioning point of the embedded pull ring should make the angle between the tie rope and the vertical projection of the horizontal plane of the steel girder of the load-bearing platform be between 1° and 5°.

Further, the enclosure structure includes a fence horizontal bar, a fence column, an enclosure panel and an inward-opening discharge door. The fence horizontal bar and the fence column constitute the frame of the enclosure structure, and the enclosure panel and the inward-opening discharge door are installed in the frame. Door.

The present invention also includes a construction method for the cantilevered assembly unloading platform on the side of the beam, including the following steps:

Step 1. Platform design: draw the unloading platform layout and processing diagram according to the usage requirements;

Specifically, draw the layout and processing drawings of the cantilevered assembly and unloading platform on the beam side according to the use requirements; determine the number, location and size of the cantilevered assembly and unloading platform on the beam side according to the construction area, temporary stacking and transshipment of materials, etc. and load parameters, and draw the layout of the cantilevered assembly and unloading platform on the beam side; calculate and determine the specifications, models and spacing of each component of the cantilevered assembly and unloading platform on the beam side according to the load parameters; , design the assembled components after hoisting, including the load-bearing platform and the enclosure structure, to prevent the beam-side cantilevered assembly unloading platform from colliding with the existing frame during hoisting; according to the requirements, design the bolts in advance between each assembled component hole, and draw the processing diagram of the unloading platform.

Step 2. Install the embedded bolt casing on the beam side;

Specifically, during the construction of the frame beam on the cantilevered floor, according to the specific position of the cantilevered assembled unloading platform on the beam side, bolt sleeves are pre-embedded on the beam sides of each side of the cantilevered assembled unloading platform on the beam side for use with the assembled unloading platform. The platform is connected by bolts, and the pre-embedded position should be accurate, and its spacing and position should meet the design requirements, and it should be fixed with matching temporary screws to ensure that the pre-embedded bolt sleeves will not be displaced during the concrete pouring process.

Step 3. Install the embedded pull ring on the beam side;

Specifically, according to the specific position of the cantilevered assembly unloading platform on the beam side, during the construction of the frame beam of the tie layer, the pull rings are pre-embedded on each side of the beam side of the cantilevered assembly unloading platform on the beam side to be used for assembly The position of the pre-embedded pull rings embedded on each side of the tie layer should be outside the horizontal projection of the assembled platform; the distance between the two pre-embedded pull rings is preferably about 300mm, and the positioning of the embedded pull rings The point should be that the angle between the tie rope and the vertical projection of the horizontal plane of the main beam of the assembled platform is between 1° and 5°, so as to ensure that the tie rope does not touch the horizontal rod of the fence of the assembled platform and the fence column, which will affect the force of the tie rope.

Step 4, preparation of each component of the assembled platform;

Specifically, each component of the assembled platform is processed in the background, and each component of the assembled platform is protected by paint, and the first processed assembled platform is pre-assembled, and any difficulty in assembly is found to be corrected in time.

Step 5. On-site assembly of the pre-hoisting assembly items of the pre-hoisting assembled platform, including the load-bearing platform and the enclosure structure;

Specifically, the items assembled before hoisting are assembled by bolts on site, and the bolts are tightened. After the assembly is completed, the tightening of each bolt is checked.

Step 6. Platform hoisting and installation, the pre-hoisting assembly items of the assembled platform are fixedly connected with the pre-embedded system through the connection system;

Specifically, when hoisting, the hook of the tower crane hooks the hoisting rings at the four corners. During the hoisting process, the hoisting requirements are strictly followed. The high-strength bolts are introduced into the bolt holes of the end anchor plate and tightened. Bury the pull ring, adjust the length of the tie rope to a suitable position, tighten the nut and the tie rope clip, and loosen the tower crane hook after completion.

Step 7. Assemble the post-hoisting assembly items of the prefabricated platform, and the hoisting post-assembly items are post-assembly components;

Specifically, the post-assembly items are assembled by bolts, and the post-assembly components can be installed or not installed according to the actual conditions of the existing frames on the construction site, or the post-assembly panels can be installed after operations such as opening and cutting; during the process, the operator is required to be Please install the safety belt. At the same time, the safety belt is hung on the existing frame or other reliable stress points of the structure, and it is strictly forbidden to hang on the platform.

Step 8: Inspection and acceptance of safety matters. After passing the acceptance, material transfer and human operation can be carried out;

Specifically, it is necessary to conduct inspections on matters that affect the safety of use, such as the firmness of the connection between the main steel girder, the secondary beam, and the post-assembly secondary beam, the stress state of the tie rope, the deformation of the pre-embedded pull ring and the hoisting pull ring, and the cracking of the weld seam. After inspection and acceptance, material transfer and human operation can be carried out after no problem.

Step 9: Remove after use.

Specifically, when dismantling, first fasten the steel wire rope of the tower crane on the hoisting pull ring, and fix it firmly with a shackle, so that the steel wire rope of the tower crane is fully stressed and maintained in balance, and then the shackle that fixes the tie rope is loosened, the tie rope is removed and passed through After unscrewing the high-strength bolts to release the connection between the anchor plate and the building, the load-bearing platform can be hoisted away; after the load-bearing platform is removed, it can be used for turnover.

Compared with prior art, the beneficial effect of the present invention is:

The beam-side cantilevered assembled unloading platform of the present invention is suitable for a bent frame structure, does not need to be anchored on the floor of a building, has quick construction, saves resources and can effectively ensure construction safety.

The overall platform surface of the assembled platform of the present invention is composed of the first platform surface at the front and the second platform surface at the rear. By assembling the pre-hoisting assembly items and the hoisting assembly items before and after hoisting respectively, it is possible to prevent beams from During the hoisting process of the side cantilever assembly unloading platform, it conflicts with the existing frame.

The invention is designed with multiple assembly nodes. Before assembly, the cantilevered assembly and unloading platform on the beam side is composed of multiple independent components. Each component is a plane two-dimensional structure, which is convenient for transportation and saves the stacking space, and solves the material transfer of the bent frame structure. problems, effectively promoting on-site civilized construction management.

Description of drawings

Figure 1: Schematic diagram of the pre-embedded architecture;

Figure 2: The rendering of the pre-embedded system after installation;

Figure 3: Schematic diagram of the top view structure of the load-bearing platform;

Figure 4: Schematic diagram of the bearing platform looking up;

Figure 5: Schematic diagram of the front fence structure of the enclosure structure;

Figure 6: Schematic diagram of the side fence structure of the enclosure structure;

Figure 7: Schematic diagram of the post-assembly component structure;

Figure 8: Schematic diagram of the assembly effect before hoisting;

Figure 9: Schematic diagram of the installation effect (excluding the side frame);

Figure 10: Schematic diagram of the installation effect (including the side frame);

In the figure: 1-section steel main beam; 2-section steel secondary beam; 3-end anchor plate; 4-platform panel; 5-welding auxiliary plate; 51-first welding auxiliary plate; 52-second welding auxiliary plate; 6 -Reserved plate for the secondary beam after assembly; 7-Tie pull ring; 8-Hoisting pull ring; 9-Fence level bar; 10-Fence column; 11-Enclosure panel; Assembling the secondary beam; 14-rear assembly panel; 15-assembly bolt hole; 16-beam side; 17-embedded bolt sleeve; 18-embedded pull ring; 19-bearing platform; 20-side fence; 21-front Fence; 22-stay rope; 23-rear assembly member; 24-high-strength bolts; 25-first platform surface; 26-second platform surface.

Detailed ways

The above-mentioned content of the present invention will be described in further detail below by the form of the embodiment, but this should not be interpreted as the scope of the above-mentioned theme of the present invention being limited to the following embodiments, all technologies realized based on the above-mentioned content of the present invention belong to scope of the invention.

The invention provides a beam-side cantilevered assembly and unloading platform, which includes a pre-embedded system, an assembled platform and a connection system;

The pre-embedded system includes a pre-embedded bolt sleeve 17 and a pre-embedded pull ring 18 installed on the beam side 16, and the pre-embedded bolt sleeve 17 and the pre-embedded pull ring 18 are left and right groups;

The assembled platform includes a load-bearing platform 19, an enclosure structure and a rear assembly member 23; the front portion of the load-bearing platform 19 has a first platform surface 25, and the rear assembly member 23 is installed on the rear portion of the load-bearing platform 19 to form a second platform surface 26. The first platform surface 25 and the second platform surface 26 are assembled into the overall platform surface of the assembled platform, and the enclosure structure is installed on the left side, right side and front side of the load-bearing platform 19; the left and right sides of the assembled platform A set of tie pull rings 7 is respectively installed on the front side of the side, and the positions of the two sets of tie pull rings 7 correspond to the left and right two sets of pre-embedded pull rings 18 on the beam side 16 respectively; One set of end anchor plates 3, the two sets of end anchor plates 3 correspond to the positions of the left and right sets of embedded bolt sleeves 17 on the beam side 16 respectively;

The connection system includes high-strength bolts 24 and tie ropes 22; the high-strength bolts 24 have two groups of left and right, respectively corresponding to the end anchor plates 3 and the embedded bolt sleeves 17 of the left and right groups, and the end anchor plates 3 Install the high-strength bolts 24 on the embedded bolt casing 17, so that the lower end of the assembled platform is fixed to the beam side 16; the tie rope 22 has two groups of left and right, corresponding to the embedded pull rings of the left and right groups respectively 18 and the tie ring 7, the front and rear ends of the tie rope 22 are respectively tied between the embedded pull ring 18 and the tie ring 7, so that the horizontal tie of the assembled platform is on the beam side 16

The load-bearing platform 19 includes a shaped steel main beam 1, a shaped steel secondary beam 2 and a platform panel 4, and the shaped steel main beam 1 includes a left shaped steel main beam 1 on the left side and a right shaped steel main beam 1 on the right side, and the left shaped steel main beam 1 , and the front part between the right profiled steel main beams 1 are connected by several horizontal profiled steel secondary beams 2, and the platform panel 4 is installed on the left profiled steel main beam 1, right profiled steel main beam 1 and profiled steel secondary beams 2 to form the front part of the assembled platform The first platform surface 25 of.

The two groups of end anchor plates 3 are respectively installed on the rear end surfaces of the left shaped steel girder 1 and the right shaped steel girder 1 .

The load-bearing platform 19 also includes a lifting ring 8 and a welding auxiliary plate 5. The lifting ring 8 is installed on the four corners of the platform panel 4 for lifting of the assembled platform; the welding auxiliary plate 5 includes a first welding auxiliary plate 51, The second welding auxiliary plate 52, the first welding auxiliary plate 51 is located on the outer side of the shaped steel main beam 1, corresponding to the position of the tie ring 7, and the pulling ring 7 is installed on the outer side of the shaped steel main beam 1 through the first welding auxiliary plate 51 , the first welding auxiliary plate 51 is corresponding to the number of the tie rings 7; the second welding auxiliary plate 52 is located on the inner side of the shaped steel girder 1, and there are four second welding auxiliary plates 52, which correspond to the number of the lifting rings 8 respectively. In the lower position, the bottom of the hoisting pull ring 8 passes through the platform panel 4 and is installed on the inside of the shaped steel girder 1 through the second welding auxiliary plate 52 .

The rear assembly member 23 includes a rear assembly panel 14 and a rear assembly secondary beam 13. The rear assembly secondary beam 13 is horizontally installed at the rear between the left profiled steel main beam 1 and the right profiled steel main beam 1, and the rear assembly panel 14 is installed on the left profiled steel main beam. On the beam 1, the right-shaped steel main beam 1 and the rear assembled secondary beam 13, the second platform surface 26 at the rear of the assembled platform is formed.

The load-bearing platform 19 also includes a reserved plate 6 for the rear assembled secondary beam. The reserved plate 6 for the rear assembled secondary beam is installed on the inner side of the rear of the left steel main beam 1 and the right steel main beam 1, and its position corresponds to that of the rear assembled secondary beam 13. The installation position, the post-assembly secondary beam 13 is installed on the left steel main beam 1 and the right steel main beam 1 through the post-assembly secondary beam reserved plate 6; the post-assembly secondary beam reserved plate 6 is several groups on the left and right sides, and The number of post-assembled secondary beams 13 corresponds accordingly.

Enclosure structure comprises fence horizontal bar 9, fence column 10, enclosure panel 11 and inner opening discharge door 12, enclosure horizontal bar 9, enclosure column 10 constitute the framework of enclosure structure, and enclosure panel 11 and Open the discharge door 12 inwardly.

In the embodiment, there are 4 embedded bolt casings 17, high-strength bolts 24, and bolt holes on the end anchor plate 3 in each of the left and right groups, totaling 8; There are 2 pre-embedded pull rings 18, tie pull rings 7, and tie ropes 22 in each group, 4 in total.

The load-bearing platform 19, the enclosure structure and the rear assembly member 23 are assembled by bolts. Before assembly, they are composed of multiple independent members. Each member is a two-dimensional planar structure, which is convenient for stacking, transportation and turnover. Bolt holes are set on the section steel main beam 1, the end section steel secondary beam 2, the platform panel 4, the end anchor plate 3, and the post-assembly secondary beam reserved plate 6. Bolt holes are provided on the horizontal bar at the bottom of the fence and the column at the end connection part. Bolt holes are set on the rear assembly panel 14 and the rear assembly secondary beam 13, and the rear assembly member 23 is arranged within 1.5m of the platform close to the end of the building, which can effectively avoid the conflict between the platform hoisting process and the construction frame erected during the structural construction. To achieve a smooth installation of the platform. During use, each bolt and drawstring 22 all should be fastened. In an embodiment, the tie rope 22 adopts a steel wire rope. The position of the embedded pull ring 18 is outside the horizontal projection of the assembled platform, and the distance between the two embedded pull rings 18 is preferably about 300mm; The included angle of the vertical projection of the horizontal plane of the section steel girder 1 is between 1° and 5°, so as to ensure that the steel wire rope does not contact the fence horizontal bar 9 and the fence column 10, which will affect the stress on the steel wire rope. The opening position of the bolt hole on the end anchor plate 3 should match the position of the bolt casing that has been pre-embedded in the structure. There may be a certain deviation in the pre-embedded casing due to construction reasons. The end anchor plate 3 should be opened according to the actual measurement results of the bolt casing position on site. hole. The hole spacing of the bolt holes of each assembled component shall match each other, and the size of the bolt holes shall be adapted to the size of the bolts used.

In another embodiment, the present invention provides a construction method for a beam-side cantilevered assembled unloading platform, comprising the following steps:

Step 1, platform design: draw the unloading platform layout and processing drawings according to the use requirements; step 2, install the embedded bolt casing 17 on the beam side 16; step 3, install the embedded pull ring 18 on the beam side 16; step 4, Preparation of each component of the assembled platform; step five, on-site assembly of the pre-hoisting assembly items of the assembled platform, the pre-hoisting assembly items include the bearing platform 19 and the enclosure structure; step six, platform hoisting and installation, through the connection system Fix the pre-hoisting assembly items of the assembled platform with the embedded system; step 7, assemble the hoisting assembly items, and the hoisting assembly items are post-assembly components 23; step 8, check and accept safety matters, and can Carry out material transfer and human operation; Step 9, dismantle after use.

As shown in Figures 1-8, the beam side 16 cantilever unloading platform of the present invention is composed of three parts: a pre-embedded system, an assembled platform, and a connecting system, which effectively solves the material transfer problem of the bent frame structure. The components can be transported to the site and then assembled, which saves warehouse space and is convenient for transportation. At the same time, the assembly and disassembly are simple and can be reused. The specific construction method is as follows:

The first step, platform design: the size of the platform in this embodiment is 2.4m*4.5m, the maximum stacking capacity is 1.5t, and there are no more than two construction workers. The main specifications and layout of the materials used in this embodiment are as follows: the steel main girder 1 adopts 20a I-beam with a spacing of 2400mm; 350*350*14mm hot-rolled steel plate, four 25*40 long holes are set on it, the platform panel 4 and the rear assembly panel 14 are all made of 6mm thick lentil pattern steel plate, the welding auxiliary plate 5 and the rear assembly secondary beam reserve plate 6 are all 5mm hot-rolled steel plate is adopted, the tie ring 7 and the hoisting ring 8 are all made of round steel with a diameter of 20, the fence horizontal bar 9 is made of a 50*30*2.5 rectangular steel pipe, and the fence column 10 is made of a 50*50*2.5 square steel pipe. The protective panel 11 is made of 1.5mm thick hot-rolled thin steel plate, the steel pipe and panel used for the inner opening discharge door 12 are the same as the front side fence, the assembly bolts are 6.8s grade M12*40 bolts, and the assembly parts of each component are evenly spaced at 500-600 Open 15*30 bolt long holes. Frame beam; pre-embedded bolt casing 17 and matching high-strength bolt 24: beam side connecting bolts adopt 8.8s grade M20*240mm stud bolts, pre-embedded bolt casing 17 adopts 180mm long M20 bolt supporting casing; The ring is made of round steel with a diameter of 20; the steel wire rope and its accessories are made of 6*37Ф24 surface galvanized steel wire rope and matching steel wire rope clips and steel wire rope collars.

The second step, pre-embedded bolt casing 17: during the construction of the cantilevered layer frame beam, according to the specific position of the platform, 4 bolt casings are pre-embedded on each side of the platform for bolt connection with the unloading platform. The pre-embedded position should be accurate. Its spacing and position should meet the design requirements, and it should be fixed with matching temporary screws to ensure that the embedded parts will not be displaced during the concrete pouring process.

The third step, pre-embedded upper pre-embedded pull rings 18: during the construction of the frame beam of the tie layer, according to the specific position of the platform, two pre-buried pull rings 18 are pre-embedded on each side of the platform to tie the unloading platform.

The fourth step is to process the various components of the assembled platform in the background, and to protect each component of the assembled platform with paint. Pre-assemble the first processed assembled platform, and make timely corrections if assembly difficulties are found.

Step 5: Assemble the pre-hoisting assembly items of the pre-hoisting platform by bolts on site. The pre-hoisting assembly items include the load-bearing platform 19 and the enclosure structure, and tighten the bolts. After the assembly is completed, check the tightening of each bolt.

The sixth step, platform hoisting and installation. During hoisting, the hook of the tower crane hooks the hoisting rings 8 at the four corners. During the hoisting process, the hoisting requirements are strictly followed. The high-strength bolts 24 are passed into the bolt holes of the end anchor plate 3 and tightened. At the same time, the tie rope 22 is passed through. Embed the draw ring 18, adjust the length of the drawstring 22 to a suitable position, tighten the nut and the drawstring 22 clips, and then loosen the tower crane hook after finishing.

The seventh step is to assemble the post-assembly items through bolts. The post-assembly component 23 can be installed or not installed according to the actual situation of the existing frame on the construction site, or the post-assembly panel 14 can be installed after operations such as opening and cutting. The process requires The operator fastens the seat belt, and the seat belt is hung on the existing frame or other reliable stress points of the structure, and it is strictly forbidden to hang on the platform.

Step 8: For the firmness of the connection of the steel main beam 1, the steel secondary beam 2, and the post-assembly secondary beam 13, the stress state of the tie rope 22, the deformation of the embedded pull ring 18 and the hoisting pull ring 8, and the cracking of the weld seam Check and accept the items that affect the safety of use, and if there is no problem, the material can be transferred and the operation can be carried out.

Step 9: Dismantle the unloading platform after use. When dismantling, first fasten the tower crane wire rope on the hoisting ring 8, and fix it firmly with the shackle, so that the tower crane wire rope is fully stressed and maintained in balance, and then the fixed pull rope 22 After the shackle is unclamped and the knotted rope 22 is removed and the high-strength bolt 24 is released to remove the anchor plate and the building, the load-bearing platform 19 can be hoisted;

Because the unloading platform of the present invention can be installed only with structural beams, the present invention is not only applicable to bent frame structures, but also to other conventional cast-in-place structures. It has a wide range of applications and can be widely applied.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any skilled person who is familiar with the profession, without departing from the scope of the technical solutions of the present invention, according to the technical essence of the present invention, Any simple modifications, equivalent replacements and improvements made in the above embodiments still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A beam-side cantilevered assembly unloading platform, characterized in that it includes a pre-embedded system, an assembled platform and a connection system; The pre-embedded system includes pre-embedded bolt sleeves and pre-embedded pull rings installed on the beam side, and the pre-embedded bolt sleeves and pre-embedded pull rings are left and right groups; The assembled platform includes a load-bearing platform, an enclosure structure and a rear assembly component; the front part of the load-bearing platform has a first platform surface, The rear assembly components are installed at the rear of the load-bearing platform to form the second platform surface. The first platform surface and the second platform surface are combined to form the overall platform surface of the assembled platform. The enclosure structure is installed on the left and right sides of the load-bearing platform. Side and front side; the left and right front parts of the assembled platform are respectively equipped with a set of tie pull rings, and the two sets of tie pull rings correspond to the left and right two sets of embedded pull rings on the beam side respectively; A set of end anchor plates are respectively installed at the left and right rear ends of the platform, and the positions of the two sets of end anchor plates correspond to the left and right sets of embedded bolt casings on the beam side respectively; The connection system includes high-strength bolts and tie ropes; there are left and right groups of high-strength bolts, which correspond to the end anchor plates and embedded bolt casings of the left and right groups respectively, and the end anchor plates are fixed by high-strength bolts On the pre-embedded bolt casing, the lower end of the assembled platform is fixed to the beam side; there are left and right two groups of tie ropes, corresponding to the left and right groups of pre-embedded pull rings and tie pull rings, and the tie ropes The front and rear ends of the platform are respectively tied between the embedded pull ring and the tie pull ring, so that the horizontal tie of the assembled platform is on the beam side. 2. The beam-side cantilevered assembled unloading platform according to claim 1, characterized in that: there are four bolt holes on each group of embedded bolt sleeves, high-strength bolts, and end anchor plates; Each group has two pre-embedded pull rings, tie pull rings, and tie ropes; the load-bearing platform, enclosure structure, and post-assembly components are assembled by bolts. 3. The beam-side cantilevered assembled unloading platform according to claim 1, characterized in that: the load-bearing platform includes a shaped steel main beam, a shaped steel secondary beam and a platform panel, and the shaped steel main beam includes a left shaped steel beam on the left side The main beam and the right steel main beam on the right side, the front part between the left steel main beam and the right steel main beam are connected by several horizontal steel secondary beams, and the platform panel is installed on the left steel main beam, the right steel main beam and the steel secondary beam. On the beam, constitute the first platform surface of the front part of the assembled platform. 4. The beam-side cantilevered assembled unloading platform according to claim 3, characterized in that: two groups of end anchor plates are respectively installed on the rear end faces of the left and right steel main beams. 5. The beam-side cantilevered assembly unloading platform according to claim 3, characterized in that: the load-bearing platform also includes hoisting rings and welding auxiliary plates, the hoisting rings are installed on the four corners of the first platform surface, It is used for the hoisting of the assembled platform; the welding auxiliary plate includes the first welding auxiliary plate and the second welding auxiliary plate, the first welding auxiliary plate is located on the outside of the steel girder, corresponding to the position of the tie and pull ring, the first welding auxiliary plate and the The number of tie and pull rings is corresponding, and the tie and pull rings are installed on the outside of the steel main girder through the first welding auxiliary plate; At the lower position of the pull ring, the bottom of the hoisting pull ring passes through the platform panel and is installed on the inside of the steel main girder through the second welding auxiliary plate. 6. The beam-side cantilevered assembly unloading platform according to claim 3, characterized in that: the rear assembly member includes a rear assembly panel and a rear assembly secondary beam, and the rear assembly secondary beam is horizontally installed on the left section steel main beam and the right section steel section At the rear between the main girders, the rear assembly panel is installed on the left steel main beam, the right steel main beam and the rear assembly secondary beam, forming the second platform surface at the rear of the assembled platform; The post-assembly components are set within 1.5m of the cantilevered assembly and unloading platform on the beam side close to the side of the building frame. 7. The beam-side cantilevered assembly unloading platform according to claim 4, characterized in that: the load-bearing platform also includes a reserved plate for the secondary beam after assembly, and the reserved plate for the secondary beam after assembly is installed on the left steel main beam, The inner side of the rear part of the right-shaped steel main girder corresponds to the installation position of the rear-assembled secondary beam. The remaining plates are several groups on the left and right sides, corresponding to the number of secondary beams after assembly. 8. The beam-side cantilevered assembled unloading platform according to claim 4, characterized in that: the position of the embedded pull ring is outside the horizontal projection of the assembled platform; the positioning point of the embedded pull ring should make the tie rope and The angle between the vertical projection of the horizontal plane of the section steel girder of the load-bearing platform is between 1° and 5°. 9. The beam-side cantilever-type assembled unloading platform according to claim 1, characterized in that: the enclosure structure includes fence horizontal bars, fence columns, enclosure panels and inner opening discharge doors, fence horizontal bars, fence columns The frame that constitutes the enclosure structure is installed with an enclosure panel and an inward opening discharge door. 10. The construction method of the beam-side cantilevered assembled unloading platform according to any one of claims 1-9, characterized in that it comprises the following steps: Step 1. Platform design: draw the unloading platform layout and processing diagram according to the usage requirements; Step 2. Install the embedded bolt casing on the beam side; Step 3. Install the embedded pull ring on the beam side; Step 4, preparation of each component of the assembled platform; Step 5. On-site assembly of the pre-hoisting assembly items of the pre-hoisting assembled platform, including the load-bearing platform and the enclosure structure; Step 6. Platform hoisting and installation, the pre-hoisting assembly items of the assembled platform are fixedly connected with the pre-embedded system through the connection system; Step 7. Assembling post-hoisting assembly items of the prefabricated platform, where the post-hoisting assembly items are post-assembly components. Step 8: Inspection and acceptance of safety matters. After passing the acceptance, material transfer and human operation can be carried out; Step 9: Remove after use.

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