Steel structure hydrogen power plant roof concrete parapet construction platform and construction method

Abstract

The present invention provides a steel structure hydrogen energy plant roof concrete parapet construction platform and a construction method thereof. The construction platform includes two fixed frames, a cylindrical slide bar between the fixed frames, and a working platform detachably slidably connected to the cylindrical slide bar; the working platform includes a car, a lifting platform inside the car, two sets of clasping mechanisms arranged in front of the car, and a set of rolling mechanisms arranged on the back of the car; each set of clasping mechanisms includes: two upper and lower fixed blocks, the front of the fixed block is rotatably connected to an clasping arm, a converging device is arranged between the upper and lower clasping arms, and steel cables extend from the upper and lower ends of the converging device and are fixedly connected to the upper and lower clasping arms respectively; the front of the clasping arm is rotatably connected to a sheave, which cooperates with the outer wall of the cylindrical slide bar; the roller of the rolling mechanism is against the surface of the building. While ensuring safety and stability, the present invention solves the problem of the inconvenience of setting up the construction platform used for building the parapet, thereby improving construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of house construction, in particular to a steel structure hydrogen energy plant roof concrete parapet construction platform and a construction method thereof. Background Art

[0002] A parapet is a low wall surrounding a building's roof. Besides providing safety, it also features a waterproof brickwork finish at the bottom to prevent water seepage from the waterproofing layer and rainwater from running off the roof. Parapets are typically constructed along the edge of a roof terrace, such as a hydrogen power plant rooftop or a bungalow.

[0003] Parapet walls are divided into two types of structures: those that protrude outward and those that do not. For structures that protrude outward, a construction platform needs to be set up. Most existing construction platforms are in the form of hanging baskets. First, the hanging baskets have a large sliding range, and the structural installation is relatively cumbersome, and counterweights are required for balance. For example, the Chinese patent with publication number CN 113152873 A discloses a heightened hanging basket system. Compared with the previous existing technology, the technical solution of this patent eliminates the need to set up scaffolding, which relatively saves costs and improves construction efficiency. However, due to the need to use multiple counterweights (total weight of 1 ton) and large booms, construction efficiency and convenience still need to be improved.

[0004] Steel-structured hydrogen energy plants have higher requirements for low carbon, environmental protection, safety and stability. For the construction of their roof concrete parapets, the construction efficiency, convenience and stability of existing technologies cannot fully meet the requirements, and there is much room for improvement. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a steel structure hydrogen power plant roof concrete parapet construction platform and construction method thereof, which solves the problem of inconvenience in setting up the construction platform used for parapet construction while ensuring safety and stability, thereby improving construction efficiency. The purpose of the present invention is achieved through the following technical solutions:

[0006] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The rolling mechanism includes: an electric cylinder fixedly connected to the bottom of the car, a telescopic rod fixedly connected to the output end of the electric cylinder, and a roller arranged at the rear end of the telescopic rod; a hub motor is provided in the middle of the roller; the roller is close to the surface of the building; the gathering device includes: an outer shell, a rotating shaft passing through the outer shell, and a ratchet and a convex ring arranged side by side on the rotating shaft, and the steel cable is wound around the space between the ratchet and the convex ring, that is, the steel cable is wound around the rotating shaft; a pawl is rotatably connected to the inner wall of the outer shell, and the pawl cooperates with the ratchet, and the side wall of the pawl is fixedly connected to a U-shaped spring piece, and the U-shaped spring piece is fixedly connected to the inner wall of the outer shell away from the pawl. Under the action of the U-shaped spring piece, the pawl maintains cooperation with the ratchet, so that the ratchet rotates only in one direction in the gathering direction; the end of the rotating shaft on one side of the ratchet is threadedly connected to a limiting nut, and a spring is provided on one side of the convex ring, and one end of the spring presses against the inner wall of the outer shell.

[0007] The car serves as the operating area for construction workers, and the clutch mechanism secures the car to the fixed frame. When the two clutch arms are pulled to a fixed position by the cable, they tightly clutch the cylindrical slide bar. Each set of clutch arms serves as a support point, while rollers serve as a third support point. The rollers rest against the existing structure, securing the work platform. The hub motors operate, allowing the work platform to slide left and right on the cylindrical slide bar. The electric cylinders operate, extending the telescopic rods and pressing the rollers against the structure. The electric cylinders control the distance between the work platform and the structure. A U-shaped spring forces the pawl against the ratchet, enabling unidirectional rotation of the ratchet and preventing the cable from loosening after winding. A spring maintains the position of the shaft. To release the cable, the limit nut is removed, pushing the shaft axially, dislocating the ratchet and pawl. This allows the shaft to rotate, releasing the cable.

[0008] A further optimization is to provide a regular hexagonal slot on the sidewall of the shaft. An Allen wrench can be used to rotate the shaft to tighten the cable. Alternatively, the shaft may be provided with a protruding crank handle on the sidewall.

[0009] Furthermore, the middle portion of the embracing arm is bent toward the convergence device, and the bending angle is between 120° and 135°.

[0010] Furthermore, the rolling mechanism is located between the two sets of engaging mechanisms.

[0011] A method for constructing a concrete parapet wall on the roof of a steel structure hydrogen energy plant. A supporting wall is provided below the parapet wall. The parapet wall structure includes: steel bars extending upward from the upper end of the wall, inner vertical steel bars and outer vertical steel bars fixedly connected to the upward extending steel bars, horizontal longitudinal steel bars bound between the inner vertical steel bars and the outer vertical steel bars, and horizontal transverse steel bars perpendicular to the horizontal longitudinal steel bars. The parapet wall is constructed using the above-described concrete parapet wall construction platform for the roof of a steel structure hydrogen energy plant, and includes the following construction steps:

[0012] Step 1: Install the construction platform: Fix the fixed frame to the existing steel structure or wall; Use lifting or hoisting equipment to move the work platform to the height of the cylindrical slide bar, fit the sheaves on the embracing mechanism to the cylindrical slide bar, and fit the sheaves of the upper and lower embracing arms of each set of embracing mechanisms to the cylindrical slide bars at different heights above and below; Wind the steel cable through the tightening device so that the upper and lower sheaves are pressed tightly and fit on the cylindrical slide bar; Start the electric cylinder to adjust the extension length of the telescopic rod so that the roller fits the surface of the wall or the preset steel structure surface; Complete the installation of the construction platform;

[0013] Step 2: Rebar laying: pre-lay the floor slab reinforcement at the upper end of the wall; the construction personnel enter the working platform, drive the hub motor to make the roller roll along the wall, drive the working platform to move left and right along the cylindrical slide bar, and the construction personnel tie the inner vertical reinforcement and the outer vertical reinforcement in the working platform so that the lower parts of the inner vertical reinforcement and the outer vertical reinforcement are fixed on the floor slab reinforcement and the reinforcement extending upward from the wall; the construction personnel adjust the height of the lifting platform in the working platform, tie the two ends of the horizontal longitudinal reinforcement to the middle of the inner vertical reinforcement and the outer vertical reinforcement respectively, and tie the horizontal transverse reinforcement in sequence from bottom to top;

[0014] Step 3: Use building formwork for covering;

[0015] Step 4: Pour concrete at the floor reinforcement in advance, and after solidification, pour concrete at the parapet. Remove the building formwork after solidification.

[0016] For further optimization, in step one, the steel cable is wound up by the winding device using manual or automatic winding.

[0017] Beneficial effects of the present invention:

[0018] 1) The installation of the construction platform of the present invention only requires the pre-installation of a fixed frame to provide support for the working platform, and the other side support is provided by the building wall. After that, it is only necessary to tighten the restraining device to limit the two engaging mechanisms and adjust a rolling structure to press against the wall to complete the installation. While ensuring stable support for the working platform, it simplifies the installation process and improves the convenience of installation, thereby accelerating the construction speed and improving the installation efficiency.

[0019] 2) The construction platform of the present invention is provided with a working platform that can move on a fixed frame. Therefore, the volume of the normal working platform can be reduced, the weight can be reduced, and the safety of construction can be improved. In addition, two sets of grooved wheels are in contact with the cylindrical slide rod respectively, and one roller is in contact with the wall. The three-point structure makes the vibration amplitude of the working platform small during movement, further enhancing stability and safety.

[0020] 3) The structural design of the constricting device in the present invention enables it to only constrict and not rotate in the opposite direction, thus avoiding the risk of loosening and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the construction platform of the present invention;

[0022] Figure 2 This is a schematic diagram of the back structure of the car of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the clasping mechanism of the present invention;

[0024] Figure 4 It is an exploded schematic diagram of the convergence device of the present invention;

[0025] Figure 5 This is a schematic structural diagram of the end portion of the rotating shaft of the beam collecting device of the present invention;

[0026] Figure 6 Schematic diagram of the pawl structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the reinforcement structure of the parapet;

[0028] Figure 8 Schematic diagram of vertical reinforcement of parapet.

[0029] Figure numerals: 1. wall; 2. fixing frame; 3. cylindrical slide rod; 4. working platform; 5. horizontal transverse steel bars; 6. inner vertical steel bars; 7. outer vertical steel bars; 8. steel bars extending upward from the wall; 9. horizontal longitudinal steel bars; 41. roller; 42. telescopic rod; 43. electric cylinder; 44. car; 45. clamping arm; 46. fixing block; 47. sheave; 48. steel cable; 49. tightening device; 410. lifting platform; 491. outer shell; 492. ratchet; 493. convex ring; 494. rotating shaft; 495. slot; 496. spring; 497. limit nut; 498. pawl; 499. U-shaped spring piece. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] like Figure 1-8 As shown, the embodiment of the present invention provides a steel structure hydrogen energy plant roof concrete parapet construction platform, including:

[0033] Two fixing frames 2 for fixing on the building, at least two horizontally arranged cylindrical slide bars 3 arranged vertically and fixedly connected between the two fixing frames 2, and a working platform 4 detachably slidably connected to the cylindrical slide bars 3; the fixing frame 2 is a rod bent twice, and its ends are used to be fixed on the building. In this embodiment, two cylindrical slide bars 3 are provided, and three can also be provided as needed.

[0034] The working platform 4 includes a car 44, a lifting platform 410 arranged inside the car 44, two sets of engaging mechanisms arranged on the front of the car 44 and a set of rolling mechanisms arranged on the back of the car 44; a scissors-type lifting mechanism is arranged at the bottom of the lifting platform 410 for the movement of the lifting platform 410, and a guardrail is arranged at the upper end of the lifting platform 410. The car 44 is the area where the construction personnel are located, and it can be set through the lifting platform 410 according to the construction height requirements.

[0035] Each group of engaging mechanisms includes: two upper and lower fixed blocks 46, which are respectively fixed to the upper and lower parts of the front face of the car 44 and the upper and lower parts of the two cylindrical slide bars 3. The front part of each fixed block 46 is rotatably connected to an engaging arm 45, and a binding device 49 is provided between the upper and lower engaging arms 45. The upper and lower ends of the binding device 49 extend steel cables 48 and are respectively fixedly connected to the upper and lower engaging arms 45; the front part of each engaging arm 45 is provided with two protrusions arranged front and back and protruding toward the binding device 49, and a sheave 47 is rotatably connected between the two protrusions of each engaging arm 45, and the groove curved surface of the sheave 47 cooperates with the outer wall of the cylindrical slide bar 3, and the sheave 47 fits the outer wall of the cylindrical slide bar 3; the middle part of the engaging arm 45 is bent toward the binding device 49, and the bending angle is between 120 and 135 degrees. By tightening the steel cable 48 through the tightening device 49 , the two embracing arms 45 can clamp the cylindrical slide rod 3 .

[0036] The rolling mechanism comprises an electric cylinder 43 fixedly connected to the bottom of the car 44, a telescopic rod 42 fixedly connected to the output end of the electric cylinder 43, and a roller 41 mounted at the rear end of the telescopic rod 42. A hub motor is installed in the middle of the roller 41, which rests against the building surface. The roller 41 rests against the building surface, serving as a support point. Activating the hub motor enables the work platform 4 to move axially along the cylindrical slide rod 3. The rolling mechanism is located between the two sets of engaging mechanisms. The electric cylinder 43 operates to extend or retract the roller 41, ensuring support at varying distances between the work platform 4 and the building.

[0037] The bundling device 49 comprises: a housing 491, a rotating shaft 494 passing through the housing 491, and a ratchet 492 and a convex ring 493 arranged side by side on the rotating shaft 494, and the steel cable 48 is wound around the space between the ratchet 492 and the convex ring 493, and the steel cable 48 is wound around the space between the ratchet 492 and the convex ring 493, and the rotation of the rotating shaft 494 is controlled to achieve the winding of the steel cable 48; the inner wall of the housing 491 is rotatably connected to a pawl 498, and the pawl 498 cooperates with the ratchet 492, and the side wall of the pawl 498 is fixedly connected to a U-shaped spring piece 499, and the side of the U-shaped spring piece 499 away from the pawl 498 is fixedly connected to the inner wall of the housing 491, and the pawl 498 is under the action of the U-shaped spring piece 499, Maintain cooperation with the ratchet 492 so that the ratchet 492 rotates only in a single direction in the contraction direction to prevent the contracted steel cable 48 from loosening. For example, the ratchet 492 can be designed to rotate toward the side away from the U-shaped spring piece 499 connected to the shell 491 in the contraction direction. When rotating in the contraction direction, the ratchet 492 and the pressed pawl 498 rotate, while when rotating in the opposite direction, they cannot rotate because they are blocked by the U-shaped spring piece 499 connected to the shell 491; the end of the rotating shaft 494 on one side of the ratchet 492 is threadedly connected to the limiting nut 497, and a spring 496 is provided on one side of the convex ring 493, and one end of the spring 496 is against the inner wall of the shell 491. The spring 496 is used to maintain the position of the ratchet 492. At the same time, after the spring 496 is compressed, the rotating shaft 494 can have a certain distance of axial movement space. When the steel cable 48 needs to be released, the position of the limit nut 497 needs to be rotated to change the position, so that the rotating shaft 494 can be moved axially, so that the ratchet 492 and the pawl 498 are staggered. At this time, the rotating shaft 494 can be rotated to release the steel cable 48.

[0038] In this embodiment, a slot 495 is provided on the side wall of the rotating shaft 494, and the slot 495 is a regular hexagon. When tightening the steel cable 48, an Allen wrench is engaged with the slot 495 to rotate the rotating shaft 494 and tighten the steel cable 48. A protruding crank handle or an electric rotating device can also be provided at the slot position to rotate the rotating shaft 494 as needed.

[0039] Example 2

[0040] A method for constructing a concrete parapet wall for a steel structure hydrogen energy plant roof, wherein a supporting wall 1 is provided below the parapet wall. The parapet wall structure includes: steel bars 8 extending upward from the upper end of the wall 1, inner vertical steel bars 6 and outer vertical steel bars 7 fixedly connected to the steel bars 8 extending upward, horizontal longitudinal steel bars 9 bound between the inner vertical steel bars 6 and the outer vertical steel bars 7, and horizontal transverse steel bars 5 perpendicular to the horizontal longitudinal steel bars 9. The parapet wall is constructed using the steel structure hydrogen energy plant roof concrete parapet wall construction platform described in Example 1, and includes the following construction steps:

[0041] Step 1: Install the construction platform:

[0042] 1-1 Fix the fixing frame 2 on the existing steel structure or wall 1; the fixing height of the fixing frame 2 can be adjusted according to the actual construction requirements. Figure 1 Only the construction platform is shown.

[0043] 1-2 Use a lifting or hoisting device to move the work platform 4 to the height of the cylindrical slide bar 3, and fit the sheaves 47 on the embracing mechanism onto the cylindrical slide bar 3. The sheaves 47 of the upper and lower embracing arms 45 of each set of embracing mechanisms fit onto the cylindrical slide bars 3 at different heights.

[0044] 1-3 The steel cable 48 is wound up by the bundling device 49, so that the upper and lower sheaves 47 are pressed tightly against the cylindrical slide bar 3;

[0045] 1-4 Start the electric cylinder 43 to adjust the extension length of the telescopic rod 42 so that the roller 41 fits the surface of the wall 1 or the preset steel structure surface, completing the installation of the construction platform;

[0046] Step 2: Steel bar laying:

[0047] 2-1 Pre-lay floor slab reinforcement at the upper end of wall 1;

[0048] 2-2 A construction worker enters the working platform 4 and drives the hub motor to roll the roller 41 along the wall 1, driving the working platform 4 to move left and right along the cylindrical slide bar 3. The construction worker ties the inner vertical steel bars 6 and the outer vertical steel bars 7 in the working platform 4 so that the lower parts of the inner vertical steel bars 6 and the outer vertical steel bars 7 are fixed to the floor steel bars and the steel bars 8 extending upward from the wall.

[0049] 2-3 The construction personnel adjust the height of the lifting platform 410 in the working platform 4, tie the ends of the horizontal longitudinal steel bars 9 to the middle of the inner vertical steel bars 6 and the outer vertical steel bars 7, and then tie the horizontal transverse steel bars 5 in sequence from bottom to top;

[0050] Step 3: Use building formwork for covering;

[0051] Step 4: Pour concrete at the floor reinforcement in advance, and after solidification, pour concrete at the parapet. Remove the building formwork after solidification.

[0052] When the construction platform is dismantled, the steel cable 48 needs to be released.

[0053] After the lower end of the parapet protrudes from the wall, the right angle part of the lower end is wrapped with steel plates.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure hydrogen power plant roof concrete parapet construction platform, characterized in that: It comprises two fixing frames (2) for fixing on a building, at least two horizontally arranged cylindrical slide bars (3) fixedly connected between the two fixing frames (2) and arranged vertically, and a working platform (4) detachably slidably connected to the cylindrical slide bars (3); The working platform (4) includes a car (44), a lifting platform (410) arranged inside the car (44), two sets of clasping mechanisms arranged on the front of the car (44), and a set of rolling mechanisms arranged on the back of the car (44); Each group of embracing mechanisms comprises: two upper and lower fixed blocks (46), the two fixed blocks (46) being fixed on the front of the car (44) and above and below the cylindrical slide bar (3), respectively; the front of each fixed block (46) is rotatably connected to an embracing arm (45), a gathering device (49) is provided between the two embracing arms (45), and a steel cable (48) is extended from the upper and lower ends of the gathering device (49) and is fixedly connected to the upper and lower embracing arms (45) respectively; the front of each embracing arm (45) is provided with two protrusions arranged front and back and protruding toward the gathering device (49), a groove wheel (47) is rotatably connected between the two protrusions of each embracing arm (45), and the groove curved surface of the groove wheel (47) matches the outer wall of the cylindrical slide bar (3); The rolling mechanism comprises: an electric cylinder (43) fixedly connected to the bottom of the car (44), a telescopic rod (42) fixedly connected to the output end of the electric cylinder (43), and a roller (41) provided at the rear end of the telescopic rod (42); a hub motor is provided in the middle of the roller (41); and the roller (41) is abutted against the surface of the building; The bundling device (49) comprises: a housing (491), a rotating shaft (494) passing through the housing (491), and a ratchet (492) and a convex ring (493) arranged side by side on the rotating shaft (494), and the steel cable (48) is wound around the space between the ratchet (492) and the convex ring (493); the inner wall of the housing (491) is rotatably connected to a pawl (498), the pawl (498) cooperates with the ratchet (492), and the side wall of the pawl (498) is fixedly connected to a U-shaped spring piece (499). The U-shaped spring piece (499) is fixedly connected to the inner wall of the housing (491) at a side away from the pawl (498). Under the action of the U-shaped spring piece (499), the pawl (498) maintains cooperation with the ratchet (492), so that the ratchet (492) rotates only in a single direction toward the convergence direction. The end of the rotating shaft (494) on one side of the ratchet (492) is threadedly connected to a limiting nut (497). A spring (496) is provided on one side of the convex ring (493), and one end of the spring (496) is against the inner wall of the housing (491).

2. The steel structure hydrogen power plant roof concrete parapet construction platform according to claim 1 is characterized by: A slot (495) is provided on the side wall of the rotating shaft (494), and the slot (495) is a regular hexagon.

3. The steel structure hydrogen power plant roof concrete parapet construction platform according to claim 1 is characterized by: A protruding crank handle is provided on the side wall of the rotating shaft (494).

4. The steel structure hydrogen power plant roof concrete parapet construction platform according to claim 1 is characterized by: The middle portion of the embracing arm (45) is bent toward the direction of the converging device (49), and the bending angle is between 120° and 135°.

5. The steel structure hydrogen power plant roof concrete parapet construction platform according to claim 1 is characterized by: The rolling mechanism is located between the two sets of clasping mechanisms.

6. A method for constructing a concrete parapet wall on the roof of a steel structure hydrogen power plant, wherein a supporting wall (1) is provided below the parapet wall, and the structure of the parapet wall comprises: The parapet is constructed by using the steel structure hydrogen energy plant roof concrete parapet construction platform according to any one of claims 1 to 5, comprising steel bars (8) extending upward from the upper end of the wall body (1), inner vertical steel bars (6) and outer vertical steel bars (7) fixedly connected to the steel bars (8) extending upward from the wall body, horizontal longitudinal steel bars (9) tied between the inner vertical steel bars (6) and the outer vertical steel bars (7), and horizontal transverse steel bars (5) perpendicular to the horizontal longitudinal steel bars (9). The parapet is constructed by using the steel structure hydrogen energy plant roof concrete parapet construction platform according to any one of claims 1 to 5, and is characterized in that the parapet comprises the following construction steps: Step 1: Install the construction platform: Fix the fixing frame (2) on the already constructed steel structure or wall (1); Use a lifting or hoisting device to transfer the working platform (4) to the height of the cylindrical slide bar (3), fit the sheave (47) on the clasping mechanism onto the cylindrical slide bar (3), and fit the sheaves (47) of the upper and lower clasping arms (45) of each set of clasping mechanisms onto the cylindrical slide bars (3) at different heights above and below; The steel cable (48) is wound up by the bundling device (49), so that the upper and lower sheaves (47) are pressed and embraced on the cylindrical slide rod (3); The electric cylinder (43) is activated to adjust the extension length of the telescopic rod (42) so that the roller (41) fits the surface of the wall (1) or the surface of the preset steel structure; and the installation of the construction platform is completed; Step 2: Steel bar laying: Pre-laying floor slab reinforcement at the upper end of the wall (1); The construction personnel enter the working platform (4), drive the wheel hub motor to make the roller (41) roll along the wall (1), and drive the working platform (4) to move left and right along the cylindrical slide bar (3). The construction personnel tie the inner vertical steel bars (6) and the outer vertical steel bars (7) in the working platform (4), so that the lower parts of the inner vertical steel bars (6) and the outer vertical steel bars (7) are fixed on the floor steel bars and the steel bars (8) extending upward from the wall; The construction personnel adjust the height of the lifting platform (410) in the working platform (4), tie the ends of the horizontal longitudinal steel bars (9) to the middle of the inner vertical steel bars (6) and the outer vertical steel bars (7), and tie the horizontal transverse steel bars (5) in sequence from bottom to top; Step 3: Use building formwork for covering; Step 4: Pour concrete at the floor reinforcement in advance, and after solidification, pour concrete at the parapet. Remove the building formwork after solidification.

7. The method for constructing a concrete parapet wall on the roof of a steel structure hydrogen power plant according to claim 6, characterized in that: In step 1, the steel cable (48) is wound up by the winding device (49) by manual winding or automatic winding.

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