Combined type safe operation platform for caisson prefabrication

By designing a composite security operation platform, it solves the problem of inefficient, unsafe and pollution caused by the traditional hanging hands in the construction of aquatic workers, and achieves a more efficient and safer construction process.

CN222413962UActive Publication Date: 2025-01-28CCCC TDC ENVIRONMENTAL ENG
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Patent Information

Application Number
CN202420009261.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-03
Publication Date
2025-01-28
Estimated Expiration
2034-01-03

AI Technical Summary

Technical Problem

In hydraulic construction, the traditional stilt operation method leads to low construction efficiency and poor safety, low sealing quality of large-head nuts, long working time for supporting the mold, and serious pollution to the lower concrete during rinsing.

Method used

Design a composite security operation platform, including the platform framework installed on the outer wall of the concrete. The top is open and has an upper and lower platform horizontal pole and flip. Provide a stable operation platform.

Benefits of technology

By reducing the number of crane operations, improving the quality of the large -headed nut blocking, shortening the time of the module operation, significantly reducing construction costs, speeding up the construction progress, and reducing pollution to the lower concrete during hair flushing.

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Abstract

The utility model relates to a combined type safe operation platform for caisson prefabrication. Comprising a cuboid-shaped platform frame fixedly installed on a poured concrete outer wall, the top of the platform frame is open, upper platform transverse rods are installed between the front edge of the top and the rear edge of the top, and a turning plate is arranged between every two adjacent upper platform transverse rods. The rear edge of the turning plate is hinged to the rear edge of the top of the platform frame, and a locking assembly is installed between the front portion of the turning plate and the front edge of the top of the platform frame. A horizontal footpath frame is installed on the front portion of the top of the platform frame, a reinforcing inclined strut is installed between the platform frame and the footpath frame, and a safety guardrail is installed above the edge of the front portion of the footpath frame. The combined type safe operation platform for caisson prefabrication is reasonable in structural design, the operation frequency of a crane is reduced, the plugging quality of a large-head nut is improved, the formwork erecting operation time is shortened, and pollution to lower concrete during wool flushing is reduced.
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Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic engineering construction, and particularly relates to a composite safety operating platform for caisson prefabrication. Background Art

[0002] Hydraulic caisson operations are usually involved in hydraulic construction projects. Hydraulic caisson refers to the construction process of building a steel structure caisson in a water body. Caissons are usually large concrete structures. In the construction process of traditional hydraulic caissons, due to the limitations of scaffolding and corbel technology, scaffolding is often used in the process of supporting and dismantling the external formwork. The scaffolding is suspended under the truss of the external formwork with steel wire ropes. During the process of supporting and dismantling the formwork, the operator has to stand on the scaffolding under the formwork and be suspended by a crane to operate. The construction efficiency is low and extremely unsafe.

[0003] In summary, it is necessary to develop and design a new type of safe operating platform to reduce the number of crane operations, improve the sealing quality of big-head nuts, shorten the formwork operation time, and reduce the pollution to the lower concrete during flushing. Utility Model Content

[0004] The utility model provides a composite safety operating platform for caisson prefabrication with a reasonable structural design to solve the technical problems existing in the known technology, so as to reduce the number of crane operations, improve the sealing quality of big head nuts, shorten the formwork operation time, and reduce the pollution of the lower concrete during flushing.

[0005] The utility model adopts the following technical solutions to solve the technical problems existing in the known technologies: a composite safety operating platform for prefabricated caissons, comprising a rectangular platform frame installed and fixed on a poured concrete outer wall, the top of the platform frame is open and an upper platform cross bar is installed between the top front edge and the top rear edge, a flap is provided between adjacent upper platform cross bars, the rear edge of the flap is hingedly connected to the top rear edge of the platform frame through a flap hinge, a locking assembly is installed between the front of the flap and the top front edge of the platform frame; a horizontal walkway frame is installed at the top front of the platform frame and a reinforcing diagonal brace is installed between the platform frame and the walkway frame, and a safety guardrail is installed above the front edge of the walkway frame.

[0006] Preferably: the platform frame includes two front and rear platform frame upper longitudinal beams and two front and rear platform frame lower longitudinal beams, a lower platform cross bar and an inclined bar are installed between the two platform frame lower longitudinal beams, platform frame vertical bars are installed between the front platform frame upper longitudinal beam and the platform frame lower longitudinal beam and between the rear platform frame upper longitudinal beam and the platform frame lower longitudinal beam, and the front and rear ends of the upper platform cross bar are fixedly connected to the two platform frame upper longitudinal beams respectively.

[0007] Preferably, the walkway frame comprises an upper platform outer longitudinal beam in front of the upper longitudinal beam of the front platform frame, and an upper platform cross bar and an inclined bar are installed between the upper longitudinal beam of the front platform frame and the upper platform outer longitudinal beam.

[0008] Preferably: the locking assembly includes a flap latch installed at the front of the flap, and a pin hole is provided on the rear side of the longitudinal beam on the front platform frame. When the flap is raised, the flap latch is moved forward and inserted into the pin hole to lock and fix the flap.

[0009] Preferably: a plurality of fixing ear plates with connection holes are installed on the longitudinal beam of the rear platform frame, and each fixing ear plate is fixedly connected to the poured concrete outer wall by using embedded big head nuts and embedded dog head bolts embedded in the poured concrete outer wall.

[0010] Preferably, the lower platform cross bars and diagonal bars and the upper platform cross bars and diagonal bars are fully covered with steel plates.

[0011] The advantages and positive effects of the utility model are:

[0012] The utility model provides a composite safety operating platform for caisson prefabrication with a reasonable structural design, which is specially used for caisson prefabrication construction projects. Compared with the existing auxiliary construction devices and construction operation methods, the composite safety operating platform in the utility model provides a stable operating platform for construction workers. By fixing the operating platform to the poured concrete outer wall, the stability of the operating platform is improved, so that construction workers have a stable operating platform when performing operations such as carpentry support and disassembly of external formwork, removal of big-head nuts, blocking big-head nut holes, reinforcement workers tying reinforcement bars, concrete pouring, etc., thereby improving operation safety.

[0013] The composite safety operating platform in the utility model has two upper and lower construction platforms. When the flap is lowered, the construction workers perform construction work on the lower platform. When the flap is raised, the construction workers perform construction work on the upper platform. Specific types of construction are performed on the two construction platforms respectively. At the same time, when the flap state is switched, the construction workers can move on the walkway frame. Therefore, the operating platform in the utility model is a composite platform with better auxiliary construction function.

[0014] When the composite safety operating platform is used for caisson operations, the number of crane operations is reduced (only the operating platform needs to be lifted), the quality of the big head nut plugging is improved, the formwork operation time is shortened, the construction cost is significantly reduced, and the construction progress is accelerated. At the same time, since the construction personnel can move along the operating platform during the roughing operation, the roughing operation can be carried out in a more controllable manner, which can reduce the pollution of the lower concrete caused by the roughing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the platform of the utility model, with the flap lowered;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the platform of the utility model, with the flap propped up;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the dog-head bolt fixation in the utility model;

[0018] Figure 4 It is a schematic diagram of the platform installation fixed cross-section structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the location of the platform installation fixing points of the utility model;

[0020] Figure 6 It is a top view of the platform of the utility model.

[0021] In the figure:

[0022] 1. Upper longitudinal beam of platform frame; 2. Vertical poles of platform frame; 3. Lower longitudinal beam of platform frame; 4. Horizontal bars and diagonal bars of lower platform; 5. Flap; 6. Horizontal bars of upper platform; 7. Fixed ear plates; 8. Flap hinges; 9. Flap latches; 10. Horizontal bars and diagonal bars of upper platform; 11. Outer longitudinal beam of upper platform; 12. Safety guardrails; 13. Strengthening diagonal braces; 14. Cast concrete exterior wall; 15. Embedded big-head nuts; 16. Embedded dog-head bolts; 17. Locking nuts; 18. External formwork; 19. External formwork connecting beam; 20. External formwork truss; 21. Formwork assembly fixings. DETAILED DESCRIPTION

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.

[0024] See also Figure 1 and Figure 2 The composite safety operating platform for prefabricated caissons of the utility model includes a rectangular platform frame installed and fixed on a poured concrete outer wall 14, the top of the platform frame is open and an upper platform cross bar 6 is installed between the top front edge and the top rear edge, a flap 5 is provided between adjacent upper platform cross bars 6, the rear edge of the flap 5 is hingedly connected to the top rear edge of the platform frame through a flap hinge 8, and a locking assembly is installed between the front of the flap 5 and the top front edge of the platform frame.

[0025] Figure 1 A schematic diagram of the structure when the flap 5 is in the lowered state is given in FIG. Figure 2A structural schematic diagram of the flap 5 in the raised state is given in FIG. It can be seen that when the flap 5 is in the lowered state, the construction personnel move on the lower platform provided by the operating platform, and when the flap 5 is in the raised state, the construction personnel move on the upper platform provided by the operating platform. The construction personnel perform different operation steps on the upper and lower platforms provided by the operating platform. Specifically, the lower platform is used by carpenters to support and dismantle the external formwork, remove the big head nuts, and plug the big head nut holes, and the upper platform is used by reinforcement workers to tie reinforcement bars, pour concrete, and other operations.

[0026] The platform frame includes two front and rear platform frame upper longitudinal beams 1 and two front and rear platform frame lower longitudinal beams 3. The two platform frame lower longitudinal beams 3 are respectively located directly below the two platform frame upper longitudinal beams 1. A lower platform crossbar and an inclined rod 4 are installed between the two platform frame lower longitudinal beams 3. The lower platform crossbar and the inclined rod 4 constitute the support surface of the lower platform. Specifically, the lower platform crossbar and the inclined rod 4 include a lower platform horizontal crossbar fixedly installed between the two lower platform frame lower longitudinal beams 3 and a lower platform inclined rod fixedly installed between the two lower platform frame lower longitudinal beams 3. The purpose of setting the lower platform inclined rod is to improve the structural strength of the lower platform. In order to provide a better stepping support effect for the construction personnel, in this embodiment, the lower platform crossbar and the inclined rod 4 are fully covered with steel plates, and the steel plates are fixedly connected to the lower platform crossbar and the inclined rod 4 by bolts or welding.

[0027] Platform frame uprights 2 are installed between the front platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3, and between the rear platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3. The front and rear ends of the upper platform crossbar 6 are fixedly connected to the two platform frame upper longitudinal beams 1, respectively. The purpose of setting the platform frame uprights 2 is to combine the front platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3 into a whole, and to combine the rear platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3 into a whole. It can be imagined that in order to further improve the structural strength, diagonal bars can also be installed between the front platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3, and between the rear platform frame upper longitudinal beam 1 and the platform frame lower longitudinal beam 3. The upper platform crossbar 6 combines the two platform frame upper longitudinal beams 1 into a whole.

[0028] In this embodiment, the locking assembly includes a flap latch 9 installed at the front of the flap 5, and a pin hole is provided on the rear side of the longitudinal beam 1 on the front platform frame. When the flap 5 is raised, the flap latch 9 is moved forward and inserted into the pin hole to lock and fix the flap 5. Similarly, when the flap 5 needs to be lowered, the flap latch 9 is moved backward to make it disengage from the pin hole. Under the action of gravity, the flap 5 tilts downward until it is suspended below the longitudinal beam 1 on the rear platform frame.

[0029] See also Figure 3 , Figure 4 and Figure 5 It can be seen that the platform frame is installed and fixed to the poured concrete outer wall 14 in the following manner:

[0030] A plurality of fixing lug plates 7 with connection holes are installed on the longitudinal beam 1 of the rear platform frame. Each fixing lug plate 7 is fixedly connected to the poured concrete outer wall 14 by using a pre-embedded big head nut 15 and a pre-embedded dog head bolt 16 pre-embedded in the poured concrete outer wall 14 .

[0031] A horizontal walkway frame is installed at the top front of the platform frame, and a reinforcing diagonal brace 13 is installed between the platform frame and the walkway frame, and a safety guardrail 12 is installed above the front edge of the walkway frame. The walkway frame constitutes a support surface for construction workers to walk and move, and the purpose of setting the safety guardrail 12 is to improve the safety of the operation and prevent construction workers from falling from the composite safety operation platform.

[0032] See also Figure 6 In this embodiment, the walkway frame includes an upper platform outer longitudinal beam 11 located in front of the upper longitudinal beam 1 of the front platform frame, and an upper platform cross bar and an inclined bar 10 are installed between the upper longitudinal beam 1 of the front platform frame and the upper platform outer longitudinal beam 11.

[0033] The upper platform cross bars and diagonal bars 10 include a horizontal cross bar installed and fixed between the upper longitudinal beam 1 of the platform frame and the outer longitudinal beam 11 of the upper platform, and a diagonal trail bar installed and fixed between the upper longitudinal beam 1 of the platform frame and the outer longitudinal beam 11 of the upper platform. The purpose of arranging the diagonal trail bars is to enhance the overall structural strength of the trail frame. In order to provide better stepping support effect for construction personnel, in this embodiment, steel plates are fully laid on the upper platform cross bars and diagonal bars 10, and the steel plates are fixedly connected to the upper platform cross bars and diagonal bars 10 by bolts or welding.

[0034] Directions:

[0035] When constructing the lower concrete wall, embedded big-head nuts 15 and embedded dog-head bolts 16 are set at specific positions, so that the embedded dog-head bolts 16 have longer exposed ends; the composite safety operating platform is lifted up by a crane and moved to the caisson construction section, and is steadily moved close to the outer wall of the caisson, so that the embedded dog-head bolts 16 are inserted into the connection holes on each fixed ear plate 7, and then the locking nuts 17 are installed and tightened to complete the fixed installation of the operating platform on the poured concrete outer wall 14;

[0036] First, each flap 5 is propped up to form an upper platform, and the construction workers perform operations such as steel bar binding on the upper platform. After the steel bar binding is completed, each flap 5 is lowered, and the construction workers perform formwork operations on the lower platform. Figure 4As shown in the figure, the template assembly includes an outer template 18 and an outer template truss 20. An outer template connecting beam 19 is arranged between the outer template 18 and the outer template truss 20 to combine the two into a complete body. When installing the template assembly, the outer end of the embedded dog head bolt 16 is inserted into the installation hole at the bottom of the outer template truss 20, and the locking nut 17 is installed to fix the template assembly. Figure 3 It can be seen that the embedded big head nut 15 and the embedded dog head bolt 16 are used as the template assembly fixing member 21 at the same time. At this time, the bottom edge of the outer template 18 is against the outer facade of the poured concrete outer wall 14. A sealing strip can be provided at the bottom of the outer template 18 to seal the gap between the outer template 18 and the outer facade of the poured concrete outer wall 14.

[0037] After the concrete is poured and hardened to meet the conditions for demolding, the construction workers disassemble the formwork components, and then release the connection between the operating platform and the poured concrete exterior wall 14. The construction workers remove the embedded big-head nuts 15 and cut off the embedded dog-head bolts 16, and use plugging materials to plug the holes where the embedded big-head nuts 15 are located.

Claims

1. A composite safety operating platform for caisson prefabrication, characterized by: The invention comprises a rectangular platform frame installed and fixed on a poured concrete outer wall (14), the top of the platform frame is open and an upper platform cross bar (6) is installed between the top front edge and the top rear edge, a flap (5) is provided between adjacent upper platform cross bars (6), the rear edge of the flap (5) is hingedly connected to the top rear edge of the platform frame through a flap hinge (8), a locking assembly is installed between the front of the flap (5) and the top front edge of the platform frame; a horizontal walkway frame is installed at the top front of the platform frame and a reinforcing diagonal brace (13) is installed between the platform frame and the walkway frame, and a safety guardrail (12) is installed above the front edge of the walkway frame.

2. The composite safety operation platform for caisson prefabrication as claimed in claim 1 is characterized by: The platform frame comprises two front and rear platform frame upper longitudinal beams (1) and two front and rear platform frame lower longitudinal beams (3); a lower platform cross bar and an inclined bar (4) are installed between the two platform frame lower longitudinal beams (3); platform frame vertical bars (2) are installed between the front platform frame upper longitudinal beam (1) and the platform frame lower longitudinal beam (3) and between the rear platform frame upper longitudinal beam (1) and the platform frame lower longitudinal beam (3); and the front end and the rear end of the upper platform cross bar (6) are respectively fixedly connected to the two platform frame upper longitudinal beams (1).

3. The composite safety operation platform for caisson prefabrication as claimed in claim 2 is characterized by: The walkway frame comprises an upper platform outer longitudinal beam (11) located in front of the upper longitudinal beam (1) of the front platform frame, and an upper platform crossbar and an inclined rod (10) are installed between the upper longitudinal beam (1) of the front platform frame and the upper platform outer longitudinal beam (11).

4. The composite safety operating platform for caisson prefabrication as claimed in claim 3 is characterized by: The locking assembly comprises a flap latch (9) installed at the front of the flap (5), and a pin hole is provided on the rear side of the longitudinal beam (1) on the front platform frame. When the flap (5) is raised, the flap latch (9) is moved forward and inserted into the pin hole to lock and fix the flap (5).

5. The composite safety operation platform for caisson prefabrication as claimed in claim 4 is characterized in that: A plurality of fixing lug plates (7) with connection holes are installed on the upper longitudinal beam (1) of the rear platform frame, and each fixing lug plate (7) is fixedly connected to the poured concrete outer wall (14) by using a pre-embedded big head nut (15) and a pre-embedded dog head bolt (16) pre-embedded in the poured concrete outer wall (14).

6. The composite safety operation platform for caisson prefabrication as claimed in claim 5 is characterized by: The lower platform crossbar and diagonal bar (4) and the upper platform crossbar and diagonal bar (10) are fully paved with steel plates.