Safety scaffold for wind power tower construction

Abstract

The invention relates to the technical field of movable construction platforms, in particular to a safety scaffold for wind power tower construction, which comprises a plurality of bearing frameworks, a safety device and a plurality of working plates, the multiple bearing frameworks are arranged outside a to-be-prefabricated tower drum in a surrounding mode at equal intervals. The safety device is arranged on an outer mold used for prefabricating the tower drum in a surrounding mode and provided with a safety rope used for being connected with the safety suit. The multiple operation plates are arranged on the tops of the multiple force bearing frameworks in a one-to-one correspondence mode, and the multiple operation plates are arranged on the side, provided with the safety rope, of the safety device in a surrounding mode. The scaffold has the effect that the portability of the scaffold is improved on the premise that safety is guaranteed.

Description

Technical Field

[0001] This application relates to the field of mobile construction platform technology, and in particular to a safety scaffold for wind turbine tower construction. Background Technology

[0002] As a key supporting structure for wind turbine generators, wind turbine towers are massive in size and are typically constructed using a segmented prefabrication method with concrete pouring. During the prefabrication of the towers, scaffolding is an indispensable piece of construction equipment used for supporting formwork, carrying out concrete pouring operations, and subsequent curing. It also needs to provide effective fall protection for construction workers.

[0003] However, in existing technologies, scaffolding used for the prefabrication of such ring-shaped, large-diameter vertical concrete structures mostly employs traditional coupler-type steel pipe scaffolding or ordinary frame scaffolding. Traditional scaffolding requires manual erection of numerous scattered components on-site, which is time-consuming and labor-intensive. Furthermore, after the pouring and curing of a section of the tower is completed, it needs to be completely dismantled and re-erected at the location of the next prefabrication section. This makes it difficult to move quickly and as a whole within the prefabrication site, affecting work efficiency and increasing transportation and turnover costs. At the same time, the safety devices in existing technologies are mostly auxiliary to the scaffolding, and their effectiveness depends on the stability of the scaffolding structure. For example, if construction workers use safety belts to prevent falls, this protective measure will fail if the scaffolding becomes unstable.

[0004] Therefore, how to increase the lightness of scaffolding while ensuring safety has become an urgent problem to be solved in this field. Summary of the Invention

[0005] In order to increase the portability of scaffolding while ensuring safety, this application provides a safety scaffolding for wind turbine tower construction.

[0006] This application provides a safety scaffolding solution for wind turbine tower construction, which adopts the following technical solution: A safety scaffold for wind turbine tower construction includes multiple load-bearing frames, safety devices, and multiple working platforms; the multiple load-bearing frames are equally spaced around the outside of the tower to be prefabricated; the safety devices are arranged around the outer mold of the prefabricated tower, and the safety devices are equipped with safety ropes for connecting safety clothing; the multiple working platforms are correspondingly arranged on the top of the multiple load-bearing frames, and the multiple working platforms are arranged around the side of the safety device where the safety ropes are located.

[0007] By adopting the above technical solution, the modular scaffolding setup, through multiple scaffolds arranged around the outer formwork, forms a complete circular working platform. When movement is required, individual scaffolds can be moved directly, eliminating the need to disassemble the scaffolding into steel pipes and plates for transport, thus increasing the efficiency of scaffolding transfer and reducing transportation costs. When operators enter the scaffolding to work, they must wear safety clothing and be connected to safety devices via safety ropes. These safety devices are installed on the outer formwork. In the event of scaffolding collapse or operator fall, the safety devices and safety clothing can effectively prevent operator injury, maximizing the protection of operator safety.

[0008] Preferably, it also includes a connecting plate, which is erected on two adjacent load-bearing frames and is located between two corresponding working plates. The connecting plate is used to cover the gap between two adjacent working plates.

[0009] By adopting the above technical solution, the connecting plate is set between two adjacent working plates, and the load-bearing frame supports the connecting plate. Since the outer wall of the tower is curved and the edge of the working plate is straight, there will be a gap between two adjacent working plates in order to fit the outer wall of the tower. The connecting plate is used to cover the gap, which increases safety to a certain extent and reduces the risk of operators falling into the gap.

[0010] Preferably, a railing is provided on the side of the working board away from the outer mold, and the railing is connected to the load-bearing frame.

[0011] By adopting the above technical solution, a railing is installed on one side of the working board, and the railing is connected to the load-bearing frame. The railing and the outer mold are set on both sides of the working board to form a working space. The railing can also provide a certain safety protection and safety warning function, reminding the operator of the position of the edge of the working board.

[0012] Preferably, the system further includes a hook assembly, which includes a first hook and a second hook; the first hook is disposed between two adjacent railings, and both ends of the first hook are respectively connected to the two railings; the second hook is disposed between two adjacent load-bearing frames, and both ends of the second hook are respectively connected to the two load-bearing frames.

[0013] By adopting the above technical solution, the stability of the entire surrounding tower scaffold is increased to a certain extent by using the first hook and the second hook to connect the two sides of the scaffold. The first hook connects two adjacent railings to restrict the scaffold from the outside and prevent the scaffold from swaying relative to each other. The second hook is set on the side of the working board close to the tower and connects two adjacent load-bearing frames to restrict the scaffold from the inside and further increase the stability of the scaffold.

[0014] Preferably, it also includes a ladder assembly, which includes a ladder and a protective sleeve; one end of the ladder is hung on the first hook; the protective sleeve is disposed on one side of the ladder.

[0015] By adopting the above technical solutions, the ladder facilitates workers' access to the upper levels of the scaffolding for construction, and the protective casing provides a certain degree of safety protection for workers on the ladder, thereby increasing the safety of the scaffolding.

[0016] Preferably, the load-bearing frame includes a first frame and a second frame, the first frame and the second frame are detachably connected, and the working platform is detachably connected to the second frame or the first frame.

[0017] By adopting the above technical solution, the first and second frames can be used separately, and the working platform can be connected to either the first or second frame to suit different height requirements. When the required scaffolding height is low, the first frame can be used alone and connected to the working platform; when the required scaffolding height is high, the second frame is connected to the top of the first frame, and the working platform is placed on top of the second frame to form a higher frame. These two different height options are suitable for most scenarios, increasing the applicability of the scaffolding.

[0018] Preferably, the safety device includes a suction cup base and a steel cable; a suction cup is provided on the side of the suction cup base near the outer mold, and the suction cup is connected to the outer mold; a support rod is provided on the side of the suction cup base away from the outer mold, and a support ring is fixed to the end of the support rod away from the suction cup base; the steel cable passes through the support ring; the steel cable is fitted with an open loop, and the open loop is slidable on the steel cable.

[0019] By adopting the above technical solution, the suction cup seat is connected and fixed to the outer mold using a suction cup, the steel cable is passed through the support ring, and an open ring is fitted on the steel cable. The open ring can slide along the axial direction of the steel cable. When the operator moves on the scaffold, the open ring moves along the steel cable with the operator.

[0020] Preferably, the open ring has an opening, the size of which matches the diameter of the support rod; the inner diameter of the open ring is larger than the outer diameter of the support ring.

[0021] By adopting the above technical solution, the inner diameter of the open ring is larger than the outer diameter of the support ring, allowing the open ring to pass through the support ring; the size of the opening of the open ring matches the diameter of the support rod, allowing the open ring to pass through the support rod, so that the open ring is not restricted by the support rod when the operator moves. When passing through the support ring, the operator needs to manually align the opening of the open ring with the support rod, so that the open ring passes through the support rod, while preventing the opening of the open ring from being too large and falling off the steel cable, resulting in the failure of safety protection.

[0022] Preferably, the safety rope is fixed on the open loop, the safety rope is connected to the safety suit, and the length of the safety rope is less than 2m.

[0023] By adopting the above technical solution, the safety rope connects the open loop to the safety suit. The operator can be in a protected state by wearing the safety suit. The length of the safety rope determines the fall height to a certain extent. At the same time, it is also necessary to calculate the impact coefficient based on the fall height to prevent injury to the operator from a high fall height.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Modular scaffolding setup: Multiple scaffolding units are arranged around the outer formwork to form a complete circular working platform. When movement is required, individual scaffolding units can be moved, increasing the efficiency of scaffolding transfer, reducing transportation costs, and equipped with safety devices to maximize the protection of the personal safety of operators. 2. The load-bearing frame is divided into a first frame and a second frame. The first frame can be used alone or in conjunction with the second frame, which is suitable for the construction needs of towers of different heights. Attached Figure Description

[0025] Figure 1 This is an overall view of a safety scaffold for wind turbine tower construction as described in this application, when it is set up around the outer wall of the tower. Figure 2 yes Figure 1 Top view; Figure 3 This is an overall view of a safety scaffold for wind turbine tower construction according to this application; Figure 4 This is an overall view of a safety scaffold used in wind turbine tower construction during retraction, as described in this application. Figure 5 This is a perspective view of the ladder section in a safety scaffold for wind turbine tower construction according to this application; Figure 6 This is a partial perspective view of a safety scaffold used in wind turbine tower construction, arranged around the outer wall of the tower. Figure 7 yes Figure 6 A magnified view of part A in the middle; Figure 8 This is a side view of a portion of the structure of a safety device in a safety scaffold for wind turbine tower construction, as described in this application. Figure 9 This is a perspective view of the first hook in a safety scaffold for wind turbine tower construction according to this application; Figure 10This is a perspective view of the second hook in a safety scaffold for wind turbine tower construction according to this application; Figure 11 This is a schematic diagram of a structure in which the working board is erected on a load-bearing frame in a safety scaffold for wind turbine tower construction, as described in this application; Figure 12 yes Figure 6 A magnified view of part B in the middle section; Figure 13 This is a bottom perspective view of a connecting plate in a safety scaffold used for wind turbine tower construction according to this application.

[0026] Explanation of reference numerals in the attached figures: 1. Load-bearing frame; 11. First frame; 12. Second frame; 111. First main column; 112. First horizontal bar; 113. Frame ladder; 114. First diagonal brace; 121. Second main column; 122. Second horizontal bar; 123. Second diagonal brace; 2. Working board; 21. Board body; 22. Connecting hook; 3. Railings; 4. Connecting plate; 41. Plate body; 42. Support frame; 5. Hook assembly; 51. First hook; 52. Second hook; 511. First hook body; 512. First hook head; 521. Second hook body; 522. Second hook head; 6. Ladder assembly; 61. Ladder; 62. Casing; 7. Safety device; 71. Suction cup; 72. Suction cup base; 73. Support rod; 74. Support ring; 75. Steel cable; 76. Open loop; 77. Safety rope; 8. Safety clothing; 9. Outer mold. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-13 This application will be described in further detail.

[0028] This application discloses a safety scaffold for wind turbine tower construction.

[0029] Reference Figure 1A safety scaffold for wind turbine tower construction includes a load-bearing frame 1, a working platform 2, a railing 3, a connecting plate 4, and a safety device 7. The load-bearing frame 1 surrounds an outer formwork 9. The working platform 2 is positioned directly above the load-bearing frame 1. A railing 3 is located on the side of the working platform 2 away from the outer formwork 9. The railing 3 is connected to the load-bearing frame 1. There is a gap between two adjacent working platforms 2. The connecting plate 4 is used to cover the gap and is erected on two adjacent load-bearing frames 1. The safety device 7 is located on the outer wall of the outer formwork 9, and the height of the safety device 7 matches the height of the railing 3. The load-bearing frame 1, the working platform 2, and the railing 3 together form a scaffold.

[0030] Reference Figure 2 It also includes a hook assembly 5 and a ladder assembly 6. The hook assembly 5 connects two adjacent scaffolds, and the ladder assembly 6 is hung on the hook assembly 5. The ladder assembly 6 facilitates operators to access the work platform 2 for construction.

[0031] Reference Figure 3 The load-bearing frame 1 includes a first frame 11 and a second frame 12, which are detachably connected. The working plate 2 can be connected to the first frame 11 or the second frame 12.

[0032] The second frame 12 includes a second main column 121 and a second diagonal brace 123. There are four second main columns 121, and the axes of the four second main columns 121 are parallel to each other. The four second main columns 121 are symmetrically arranged at the bottom of the working plate 2. The two ends of the second diagonal brace 123 are connected to two different second main columns 121. There are two second diagonal braces 123, and the two second diagonal braces 123 are respectively connected to different second main columns 121. The second diagonal brace 123 can provide a certain supporting force to the second main column 121, so that the second main column 121 has higher strength and support.

[0033] When the first frame 11 and the second frame 12 are connected vertically, the scaffolding is in an extended state, as shown in the reference. Figure 3 At this time, the work board 2 is set above the second frame 12, and the railing 3 is connected to the second frame 12.

[0034] Reference Figure 4The first frame 11 includes a first main column 111, a first crossbar 112, a frame ladder 113, and a first diagonal brace 114. There are four first main columns 111, which together support the working board 2. The first crossbar 112 is located below the working board 2, and its two ends are respectively connected to different first main columns 111. The first diagonal brace 114 is also located below the working board 2, and it connects two different first main columns 111. Of the two first main columns 111 connected by the first diagonal brace 114 and the two first main columns 111 connected by the first crossbar 112, only one of them is the same. That is, the first diagonal brace 114 and the first crossbar 112 are respectively located at the bottom of two sides of the working board 2 with unequal lengths. The frame ladder 113 and the first crossbar 112 are located at the bottom of the same side of the working board 2, and the frame ladder 113 is connected to two crossbars on the same vertical plane.

[0035] Reference Figure 5 The ladder assembly 6 includes a ladder 61 and a protective sleeve 62. The protective sleeve 62 is located at the upper end of the ladder 61, and the section of the ladder 61 without the protective sleeve 62 is 2 meters high. The protective sleeve 62 is hung on the hook assembly 5. In this embodiment, the 2-meter gap at the bottom of the ladder 61 without the protective sleeve 62 is to facilitate the movement of workers below the scaffolding, prevent collisions caused by the low height of the protective sleeve 62, and also facilitate access for operators to the inside of the protective sleeve 62.

[0036] Reference Figure 6 The outer mold 9 is surrounded by a safety device 7, the height of which matches the height of the railing 3, and the safety device 7 is connected to a safety suit 8.

[0037] In this embodiment, the safety suit 8 is just a general term for the protective device worn by the operator. The safety suit 8 can be a vest or other form. The figure is only for showing the safety suit 8 and does not limit the specific shape and structure of the safety suit 8 or the connection method between the safety suit 8 and the safety rope 77.

[0038] Reference Figure 7 The safety device 7 includes a suction cup 71, a suction cup base 72, a support rod 73, a steel cable 75, an open loop 76, and a safety rope 77. The suction cup 71 is fixed on the suction cup base 72 and faces the outer mold 9. One end of the support rod 73 is fixed on the suction cup base 72. The open loop 76 is connected to the steel cable 75. The safety rope 77 is connected to the open loop 76. The other end of the safety rope 77 is connected to the safety suit 8.

[0039] Reference Figure 8The structure of the safety device 7 is shown in more detail. One end of the support rod 73 is connected to a support ring 74. A steel cable 75 is installed inside the support ring 74. The axis of the support ring 74 is parallel to the axis of the steel cable 75. An open ring 76 is provided on the outer sleeve of the steel cable 75. The opening of the open ring 76 is smaller than the diameter of the steel cable 75 but larger than or equal to the diameter of the support rod 73. The inner diameter of the open ring 76 is larger than or equal to the outer diameter of the support ring 74.

[0040] In this embodiment, the open ring 76 is designed as a direct opening without a latch, in which case the open ring 76 can be inserted through one end of the steel cable 75; in other embodiments of this application, the open ring 76 can be replaced with a locking ring with a latch, which needs to be opened manually. In this case, it is not necessary to insert it through the end of the steel cable 75, but to insert it directly through the steel cable 75. When passing the support ring 74, the latch is manually opened with a certain gap so that the locking ring can pass through the support rod 73. This provides higher security, but also increases the complexity. The choice can be made according to actual needs.

[0041] In this embodiment, the connection between the suction cup 71 and the outer mold 9 does not solely rely on the suction force of the suction cup 71. When fixing the suction cup 71, adhesive is injected between the suction cup 71 and the outer mold 9 to further tighten the suction cup 71. The adhesive can be glass glue or other adhesives with strong adhesion.

[0042] In this embodiment, the steel cable 75 is arranged around the outer mold 9. The connection of the steel cable 75 can be set at the bottom or directly on the scaffold. The connection and fixation of the steel cable 75 are well known to those skilled in the art and will not be described in detail here.

[0043] Reference Figure 9 The first hook 51 includes a first hook body 511 and a first hook head 512. There are two first hook heads 512, which are telescopically disposed at both ends of the first hook body 511.

[0044] Reference Figure 10 The second hook 52 includes a second hook body 521 and a second hook head 522. There are two second hook heads 522, which are telescopically disposed at both ends of the second hook body 521.

[0045] In this embodiment, the first hook head 512 is connected to the railing 3. When the first connecting hook 51 is assembled onto the railing 3, it needs to extend and retract to complete the connection. After assembly, the first hook body 511 and the first hook head 512 are fixed to each other and will not extend or retract. This technology is achievable by those skilled in the art and will not be described in detail here. The second hook head 522 is connected to the first main post 111 or the second main post 121. When the second connecting hook 52 is connected, it needs to extend and retract to complete the connection. After assembly, the second hook body 521 and the second hook head 522 are fixed to each other and will not extend or retract. This technology is achievable by those skilled in the art and will not be described in detail here.

[0046] Reference Figure 11 The working board 2 includes a board body 21 and a connecting hook 22. The connecting hook 22 is fixed at both ends of the board body 21 and is used to connect the board body 21 to the second crossbar 122 so that the board body 21 is placed on the second crossbar 122.

[0047] Reference Figure 12 The second hook 52 is connected to the second main column 121, and the two second hook heads 522 are respectively connected to the second main columns 121 on different scaffolds.

[0048] Reference Figure 13 In this embodiment, the connecting plate 4 is trapezoidal and includes a plate body 41 and a support frame 42. The plate body 41 is fixed on the support frame 42, and the two sides of the support frame 42 are respectively erected on different scaffolds to cover the gap between the two scaffolds.

[0049] In this embodiment, six first crossbars 112 are provided. Figure 4 Only four are shown in the image; the other two are positioned directly below and in contact with the work board 2, as shown in the reference image. Figure 11 The working board 2 is erected on the two first crossbars 112; details are not shown in order to demonstrate the overall structure. Figure 3 and Figure 4 It is displayed in the middle.

[0050] The implementation principle of the movable scaffolding and safety device 7 for wind power external formwork 9 construction in this application is as follows: When scaffolding needs to be installed, the required height of the scaffolding is first determined. If the required height is low, the second frame 12 is used alone; if the required height is high, the second frame 12 and the first frame 11 are stacked. Then, the scaffolding is assembled at the designated location. After a single assembly, it does not need to be disassembled multiple times during subsequent transportation. After installation, the load-bearing frame 1 is fixed to give it a certain degree of stability. All load-bearing frames 1 are arranged around the outer mold 9. The load-bearing frames 1 arranged around the same tower section to be prefabricated are at the same height. Then, safety devices 7 need to be installed. When installing safety devices 7, equipment such as ladders for high-altitude operations is required. The suction cups 71 are fixed to the outer mold 9 at equal intervals and heights. The steel cables 75 are passed through the support rings 74, and the opening rings 76 are passed through the steel cables 75. After the safety devices 7 are installed, the railings 3, the working platform 2, the first hook 51, the second hook 52 of the connecting plate 4, and the climbing ladder assembly 6 are installed. After installation, operators can work on the scaffold while wearing safety clothing 8. When transportation is required, the hook assembly 5 can be disassembled, and the individual scaffold sections can be moved modularly. After moving the scaffold to the designated location, the scaffold can be fixed again.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety scaffold for wind turbine tower construction, characterized in that: It includes multiple load-bearing frames (1), safety devices (7) and multiple working boards (2); Multiple load-bearing frames (1) are arranged at equal intervals around the outside of the tower to be prefabricated; The safety device (7) is arranged around the outer mold (9) for prefabricating the tower, and the safety device (7) is provided with a safety rope (77) for connecting the safety suit (8). Multiple working boards (2) are arranged one-to-one on the top of multiple load-bearing frames (1), and multiple working boards (2) are arranged around the side of the safety device (7) where the safety rope (77) is provided.

2. The safety scaffolding for wind turbine tower construction according to claim 1, characterized in that: It also includes a connecting plate (4), which is erected on two adjacent load-bearing frames (1) and is located between two corresponding working plates (2). The connecting plate (4) is used to cover the gap between two adjacent working plates (2).

3. The safety scaffolding for wind turbine tower construction according to claim 1, characterized in that: The working board (2) is provided with a railing (3) on the side away from the outer mold (9), and the railing (3) is connected to the load-bearing frame (1).

4. A safety scaffold for wind turbine tower construction according to claim 3, characterized in that: It also includes a hook assembly (5), which includes a first hook (51) and a second hook (52); The first hook (51) is set between two adjacent railings (3), and the two ends of the first hook (51) are respectively connected to the two railings (3); The second hook (52) is disposed between two adjacent load-bearing frames (1), and the two ends of the second hook (52) are respectively connected to the two load-bearing frames (1).

5. A safety scaffold for wind turbine tower construction according to claim 4, characterized in that: It also includes a ladder assembly (6), which includes a ladder (61) and a protective sleeve (62). One end of the ladder (61) is hung on the first hook (51); The protective sleeve (62) is located on one side of the ladder (61).

6. A safety scaffold for wind turbine tower construction according to claim 1, characterized in that: The load-bearing frame (1) includes a first frame (11) and a second frame (12), the first frame (11) and the second frame (12) are detachably connected, and the working plate (2) is detachably connected to the second frame (12) or the first frame (11).

7. A safety scaffold for wind turbine tower construction according to claim 1, characterized in that: The safety device (7) includes a suction cup base (72) and a steel cable (75); The suction cup base (72) is provided with a suction cup (71) on the side near the outer mold (9), and the suction cup (71) is connected to the outer mold (9); A support rod (73) is provided on the side of the suction cup seat (72) away from the outer mold (9), and a support ring (74) is fixed at the end of the support rod (73) away from the suction cup seat (72). The steel cable (75) passes through the support ring (74); an open ring (76) is fitted on the steel cable (75), and the open ring (76) is slidable on the steel cable (75).

8. A safety scaffold for wind turbine tower construction according to claim 7, characterized in that: The open ring (76) has an opening, the size of which matches the diameter of the support rod (73); the inner diameter of the open ring (76) is larger than the outer diameter of the support ring (74).

9. A safety scaffold for wind turbine tower construction according to claim 7, characterized in that: The safety rope (77) is fixed on the open loop (76), and the safety rope (77) is connected to the safety suit (8). The length of the safety rope (77) is less than 2m.

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