A liftable construction platform for external reinforcement of circular silos

Abstract

The present invention relates to a liftable construction platform for external reinforcement of a circular silo, comprising a top cantilever beam, a main hanger, a branch hanger, an outer ring side wall support, an inner ring side wall support, a walkway plate, a suspension steel cable, a diagonal steel cable, a lifting ring hook and a lifting device; a counterweight is arranged at the inner end of the top cantilever beam, the outer end is connected to the upper end of the suspension steel cable, and the lower end of the suspension steel cable is connected to the lifting device; the inner side of the main hanger and the branch hanger are connected by the inner ring side wall support, and the outer side is connected by the outer ring side wall support, and together form an annular frame on the outer side of the circular silo; walkway plates are arranged at the top, middle and bottom of the annular frame respectively; the main hanger and the middle of the branch hanger on the inner side of the annular frame are respectively provided with lifting ring hooks for hanging steel formwork. The present invention replaces the traditional construction method of the ground-type steel pipe scaffold, which can not only save construction investment and reduce labor intensity, but also effectively improve construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of special structure reinforcement construction, and in particular to a liftable construction platform for externally reinforcing a circular silo. Background Art

[0002] In the industrial field, circular silos for storing raw materials or finished products are a commonly used structural form, especially in the storage of materials such as coal, steel and grain. Due to insufficient design capabilities, construction defects and over-use, circular silo structures often have insufficient bearing capacity or excessive crack widths.

[0003] In order to meet the requirements of structural safety and durable use, without affecting production operations, circular silos with the above situation are generally treated with external concrete reinforcement. The most common construction method is to erect a floor-standing steel pipe scaffolding on the outside of the silo, starting from the ground and stretching all the way to the top of the silo, and then carry out reinforcement construction within the scaffolding erection range. For large concrete silos, the scaffolding height needs to reach more than 50 meters, and the construction investment is relatively large; especially for construction projects with continuous reinforcement of large quantities of silos of the same scale and the same reinforcement conditions, the construction investment is significantly increased by using floor-standing steel pipe scaffolding to organize the construction; and because the scaffolding and formwork disassembly and assembly cycle is long and the work intensity is high, the construction efficiency is affected.

[0004] According to the structural characteristics of the circular silo, if a construction platform that can be raised and lowered and reused is developed, the construction investment can be greatly reduced and the construction efficiency can be improved. Summary of the invention

[0005] The present invention provides a liftable construction platform for external reinforcement of a circular silo, which replaces the traditional construction method of a floor-standing steel pipe scaffold, can save construction investment, reduce labor intensity, and effectively improve construction efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A liftable construction platform for external reinforcement of a circular silo, comprising top cantilever beams, a main hanger, branch hangers, outer sidewall supports, inner sidewall supports, walkway plates, suspension steel cables, stay cables, eyebolt hooks and a lifting device; a plurality of top cantilever beams are arranged along the circumference of the circular silo, each top cantilever beam is arranged along the radial direction of the circular silo, a counterweight is arranged at the inner end of the top cantilever beam, the outer end is connected to the upper end of the suspension steel cable, the lower end of the suspension steel cable is connected to the lifting device, and the lifting device is installed at the upper part of the main hanger; both the main hanger and the branch hangers are frame structures, the branch hangers are arranged between two adjacent main hangers, the inner sides of the main hanger and the branch hangers are connected by inner sidewall supports, the outer sides of the main hanger and the branch hangers are connected by outer sidewall supports, and a circular frame is jointly formed on the outer side of the circular silo; walkway plates are respectively arranged at the top, middle and bottom of the circular frame; stay cables are respectively arranged between the main hanger and the branch hanger on the inner and outer sides of the circular frame; eyebolt hooks are respectively arranged in the middle of the main hanger and the branch hanger on the inner side of the circular frame for hanging steel formworks; upper rollers are arranged at the upper parts of the main hanger and the branch hanger on the inner side of the circular frame, and lower rollers are arranged at the lower parts.

[0008] The main hanger is a "mesh" - shaped frame structure, the lifting device is arranged in the uppermost space, the inner sidewall support and the outer sidewall support are respectively arranged on the inner and outer sides of the lower two layers of space, and the walkway plates are respectively arranged on the bottom cross - beam, the second - layer cross - beam and the third - layer cross - beam from bottom to top.

[0009] The branch hanger is a "day" - shaped frame structure, the inner sidewall support and the outer sidewall support are respectively arranged on the inner and outer sides of the branch hanger, and the walkway plates are respectively arranged on the three cross - beams.

[0010] The walkway plates are provided with profiled steel frames and have uniform size specifications.

[0011] The outer sidewall support is composed of a profiled steel frame, horizontal railings and cross - steel braces. A plurality of horizontal railings are arranged along the height direction in the profiled steel frame, and cross - steel braces are arranged along two diagonal directions of the profiled steel frame; the inner sidewall support is composed of a profiled steel frame and cross - steel braces, and cross - steel braces are arranged along two diagonal directions of the profiled steel frame; each component in the inner sidewall support, the outer sidewall support and the steel formwork has uniform size specifications.

[0012] The stay cable is a stay cable with a turnbuckle.

[0013] The eyebolt hook is an eyebolt hook with a turnbuckle.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) The conventional construction method using ground-type steel pipe scaffolding requires the whole process of erection from bottom to top. Even if only the upper part of the silo is partially reinforced, the scaffolding needs to be erected from the ground upwards, which consumes a lot of scaffolding materials. However, the liftable construction platform of the present invention only has two layers of steel structure frames, which greatly saves the amount of materials used.

[0016] 2) In the conventional construction method of using ground-type steel pipe scaffolding, the construction formwork needs to be repeatedly disassembled, carried and installed manually, which has high labor intensity and low work efficiency. However, since the steel formwork is directly hung on the liftable construction platform described in the present invention, no manual carrying is required. When disassembling and installing, only the connecting bolts between the steel formwork need to be loosened or tightened, which greatly reduces the work intensity and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan layout diagram of the top cantilever beam and the suspension support points described in the present invention.

[0018] Figure 2 It is a plan layout diagram of the liftable construction platform of the present invention.

[0019] Figure 3 It is an expanded view of the facade of the liftable construction platform of the present invention.

[0020] Figure 4 It is an expanded view of the inner elevation of the liftable construction platform of the present invention.

[0021] Figure 5 It is a transverse cross-sectional view of the annular frame of the present invention at the main body hanger.

[0022] Figure 6 It is a transverse cross-sectional view of the annular frame of the present invention at the branch hanger.

[0023] In the figure: 1. Circular silo 2. Concrete reinforcement layer 3. Top cantilever beam 4. Main hanger 5. Branch hanger 6. Outer ring side wall support 7. Inner ring side wall support 8. Steel formwork 9. Walkway board 10. Suspension steel cable 11. Lifting device 12. Inclined steel cable 13. Lower roller 14. Upper roller 15. Lifting ring hook DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0025] like Figure 1-Figure 6As shown in the figure, a liftable construction platform for external reinforcement of a circular silo according to the present invention includes a top cantilever beam 3, a main hanger 4, a branch hanger 5, an outer ring side wall support 6, an inner ring side wall support 7, a walkway plate 9, a suspension cable 10, a stay cable 12, a sling hook 15 and a lifting device 11; a plurality of top cantilever beams 3 are arranged along the circumferential direction of the circular silo 1, each top cantilever beam 3 is arranged along the radial direction of the circular silo 1, a counterweight is arranged at the inner end of the top cantilever beam 3, the outer end is connected to the upper end of the suspension cable 10, the lower end of the suspension cable 10 is connected to the lifting device 11, and the lifting device 11 is installed on the upper part of the main hanger 4; both the main hanger 4 and the branch hanger 5 are frame structures, the branch hanger 5 is arranged between two adjacent main hangers 4, the inner sides of the main hanger 4 and the branch hanger 5 are connected by the inner ring side wall support 7, the outer sides of the main hanger 4 and the branch hanger 5 are connected by the outer ring side wall support 6, and a circular frame is jointly formed on the outside of the circular silo 1; walkway plates 9 are respectively arranged at the top, middle and bottom of the circular frame; stay cables 12 are respectively arranged between the main hanger 4 and the branch hanger 5 on the inner and outer sides of the circular frame; sling hooks 15 are respectively arranged in the middle of the main hanger 4 and the branch hanger 5 on the inner side of the circular frame for hanging the steel formwork 8; upper rollers 14 are arranged at the upper parts of the main hanger 4 and the branch hanger 5 on the inner side of the circular frame, and lower rollers 13 are arranged at the lower parts.

[0026] The main hanger 4 is a frame structure in the shape of a Chinese character 'Mu', the lifting device 11 is arranged in the uppermost layer space, the inner ring side wall support 7 and the outer ring side wall support 6 are respectively arranged on the inner and outer sides of the lower two layer spaces, and the walkway plates 9 are respectively arranged on the bottom cross beam, the second cross beam and the third cross beam from bottom to top.

[0027] The branch hanger 5 is a frame structure in the shape of a Chinese character 'Ri', the inner ring side wall support 7 and the outer ring side wall support 6 are respectively arranged on the inner and outer sides of the branch hanger 5, and the walkway plates 9 are respectively arranged on the three cross beams.

[0028] The walkway plate 9 is provided with a profiled steel frame and has a unified size specification.

[0029] The outer ring side wall support 6 is composed of a profiled steel frame, a horizontal railing and a cross steel brace, multiple horizontal railings are arranged along the height direction in the profiled steel frame, and cross steel braces are arranged along two diagonal directions of the profiled steel frame; the inner ring side wall support 7 is composed of a profiled steel frame and a cross steel brace, and cross steel braces are arranged along two diagonal directions of the profiled steel frame; each component in the inner ring side wall support 7, the outer ring side wall support 6 and the steel formwork 8 has a unified size specification.

[0030] The stay cable 12 is a stay cable with a turnbuckle.

[0031] The sling hook 15 is a sling hook with a turnbuckle.

[0032] The present invention describes a liftable construction platform, whose entire weight is suspended and supported by multiple top cantilever beams 3 arranged on the circular silo 1; the liftable construction platform is lifted as a whole by a lifting device 11 connected to the main hanger 4 through a suspension steel cable 10; the liftable construction platform mainly has two working surfaces, the lower working surface is responsible for the installation of steel formwork 8, and the upper working surface is responsible for steel bar binding and construction surface cleaning, etc. The construction of the two working surfaces does not interfere with each other and can be carried out simultaneously.

[0033] All components of the liftable construction platform are designed in a standardized manner, including size specifications and bolt connection methods, which are convenient for disassembly and reusability. In order to ensure a stable and smooth lifting process, components such as inclined steel cables 12, upper rollers 14, and lower rollers 13 are also provided. The main hanger 4 and the branch hanger 5 are connected by the inner ring side wall support 7 with a diagonal brace, the outer ring side wall support 6, and the inclined steel cables 12, so that the overall vertical rigidity of the platform is guaranteed. The walkway board 9 with a steel frame is used to connect each main hanger 4 and the branch hanger 5 by bolts, so that the integrity of the platform plane is effectively improved; the upper and lower parts of the main hanger 4 and the branch hanger 5 are provided with rollers, which play an auxiliary supporting role when the platform is lifted and lowered, so that it runs smoothly and stably, thereby ensuring the safe and stable operation of the platform. During the working process, some construction materials, integral steel formworks, some operating workers, etc. can be raised and lowered simultaneously with the platform. In particular, the steel formwork 8 is hung on the inner side of the platform through a lifting hook 15 with a basket bolt, and is raised and lowered together with the platform. It is convenient to disassemble and adjust, and no manual handling is required, which greatly reduces the labor intensity of the workers and significantly improves work efficiency.

[0034] like Figure 1 The figure shows the plan layout of the top cantilever beam and the suspension support point. The top cantilever beam 3 with counterweight is evenly arranged on the top of the circular silo 1 (concrete silo) along the circumference of the circular silo 1. The size of the counterweight on the top cantilever beam 3 should be determined by calculation based on the total load of the liftable construction platform and the position of the support point of the top cantilever beam 3.

[0035] like Figure 2 The figure is a plan view of the liftable construction platform. From a plane view, the main hanger 4 and the branch hanger 5 are connected with the outer ring side wall support 6, the inner ring side wall support 7 and the walkway plate 9 by bolts to form a closed annular platform structure. The steel formwork 8 is located between the circular silo 1 and the annular closed platform to form an annular closed structure. The steel formworks 8 constituting the annular steel formworks are of standardized size and are connected by bolts.

[0036] like Figure 3The figure shows the unfolded exterior elevation of the liftable construction platform. The upper end of the suspension cable 10 is anchored to the outer end of the top cantilever beam 3, and the lower end of the suspension cable 10 is locked to the lifting device 11 on the upper part of the main hanger 4. The outer ring side wall support 6 is made of a steel frame, a cross steel diagonal brace and a horizontal railing, and all components are standardized components with uniform size specifications; the outer side of the main hanger 4 and the branch hanger 5 are not only fixed by the outer ring side wall support 6 and bolts, but also obliquely locked by the inclined cable 12 with basket bolts, so as to improve the overall vertical stability of the platform. When the platform is raised or lowered, the lifting devices 11 on the upper parts of each main hanger 4 must act synchronously to ensure that the suspension cable 10 is evenly stressed and the platform runs smoothly.

[0037] like Figure 4 The figure shows the unfolded inner elevation of the liftable construction platform. The inner side wall support 7 is made of a steel frame and cross steel diagonal braces, and all components are standardized components with uniform size specifications; the inner sides of the main hanger 4 and the branch hanger 5 are fixed by the inner side wall support 7 and bolts, and are also locked diagonally by the inclined steel cable 12 with basket bolts, thereby improving the overall vertical stability of the platform.

[0038] like Figure 5 The figure shows a cross-sectional view of the annular frame at the main hanger 4. The main hanger 4 is welded with steel sections to form a three-layer steel frame structure. The top layer is used to arrange and install the lifting device 11, and the two layers below are used for personnel passage and construction operations. An upper roller 14 is arranged on the inner upper part of the main hanger 4. When the platform is raised or lowered, the upper roller 14 can roll along the outer surface of the circular silo 1. A lower roller 13 is arranged on the inner lower part of the main hanger 4, which can roll along the outer surface of the poured concrete reinforcement layer 2. The upper end of the eye hook 15 with a basket bolt is welded to an appropriate position on the inner side of the main hanger 4. The upper end of the steel template 8 is suspended on the inner side of the main hanger 4 through the eye hook 15. The placement height of the steel template 8 can be accurately adjusted through the basket bolt. The lower end of the steel template 8 is close to the upper edge of the poured concrete reinforcement layer 2. Before pouring the concrete reinforcement layer 2, each steel template 8 is locked and fixed by connecting bolts.

[0039] like Figure 6 The figure shows a cross-sectional view of the annular frame at the branch hanger 5. The branch hanger 5 is welded with steel sections to form a two-layer steel frame for personnel passage and construction operations, and its bottom elevation is consistent with the bottom elevation of the main hanger 4; an upper roller 14 is correspondingly arranged on the inner upper part of the branch hanger 5, and a lower roller 13 is correspondingly arranged on the inner lower end of the branch hanger 5; the upper end of the eye hook 15 with a basket bolt is welded to an appropriate position on the inner side of the branch hanger 5, and the upper end of the steel template 8 is suspended on the inner side of the branch hanger 5 through the eye hook 15 with a basket bolt. The placement height of the steel template 8 can be accurately adjusted by the basket bolt, and the lower end of the steel template 8 is close to the upper edge of the poured concrete reinforcement layer 2.

[0040] The liftable construction platform of the present invention replaces the traditional floor-standing steel pipe scaffolding and is used for external reinforcement construction of the circular silo. The liftable platform is flexible and convenient to assemble and disassemble, saves construction investment, reduces labor intensity, and can effectively improve construction efficiency. It has been verified in practice that the use effect is very ideal.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liftable construction platform for external reinforcement of a circular silo, characterized in that: It includes top cantilever beams, main hanging frames, branch hanging frames, outer ring sidewall supports, inner ring sidewall supports, walkway plates, suspension steel cables, stay cables, lifting rings and lifting devices; A plurality of top cantilever beams are arranged along the circumferential direction of the circular silo, each top cantilever beam is arranged along the radial direction of the circular silo, a counterweight is arranged at the inner end of the top cantilever beam, the outer end is connected to the upper end of the suspension steel cable, the lower end of the suspension steel cable is connected to the lifting device, and the lifting device is installed on the upper part of the main hanging frame; Both the main hanging frame and the branch hanging frame are frame structures, the branch hanging frame is arranged between two adjacent main hanging frames, the inner sides of the main hanging frame and the branch hanging frame are connected by inner ring sidewall supports, and the outer sides of the main hanging frame and the branch hanging frame are connected by outer ring sidewall supports, jointly forming an annular frame on the outside of the circular silo; Walkway plates are respectively arranged at the top, middle and bottom of the annular frame; Stay cables are respectively arranged between the main hanging frame and the branch hanging frame on the inner and outer sides of the annular frame; Lifting rings are respectively arranged in the middle of the main hanging frame and the branch hanging frame on the inner side of the annular frame for hanging steel formworks; Upper rollers are arranged at the upper parts of the main hanging frame and the branch hanging frame on the inner side of the annular frame, and lower rollers are arranged at the lower parts.

2. A liftable construction platform for external reinforcement of a circular silo according to claim 1, characterized in that: The main hanging frame is an "eye" - shaped frame structure, the lifting device is arranged in the uppermost layer space, the inner ring sidewall support and the outer ring sidewall support are respectively arranged corresponding to the inner and outer sides of the lower two - layer spaces, and the walkway plates are respectively arranged corresponding to the bottom cross - beam, the second - layer cross - beam and the third - layer cross - beam from bottom to top.

3. The escalable construction platform for external reinforcement of a circular silo according to claim 1, characterized in that: The branch hanging frame is a "day" - shaped frame structure, the inner ring sidewall support and the outer ring sidewall support are respectively arranged on the inner and outer sides of the branch hanging frame, and the walkway plates are respectively arranged on the three - layer cross - beams.

4. A liftable construction platform for external reinforcement of a circular silo according to claim 1, 2 or 3, characterized in that: The walkway plate is provided with a profiled steel frame and has a unified size specification.

5. The escalable construction platform for external reinforcement of a circular silo according to claim 1, characterized in that: The outer ring sidewall support is composed of a profiled steel frame, horizontal railings and cross - steel diagonal braces. A plurality of horizontal railings are arranged along the height direction in the profiled steel frame, and cross - steel diagonal braces are arranged along two diagonal directions of the profiled steel frame; The inner ring sidewall support is composed of a profiled steel frame and cross - steel diagonal braces, and cross - steel diagonal braces are arranged along two diagonal directions of the profiled steel frame; Each component in the inner ring sidewall support, the outer ring sidewall support and the steel formwork has a unified size specification.

6. The escalable construction platform for external reinforcement of a circular silo according to claim 1, characterized in that: The stay cable is a stay cable with a turnbuckle.

7. The escalable construction platform for external reinforcement of a circular silo according to claim 1, characterized in that: The lifting ring is a lifting ring with a turnbuckle.

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