A tower ladder structure

Abstract

The present invention discloses a tower ladder structure, comprising a storage connecting frame, a fixing member, and a hanging ladder. The storage connecting frame adopts a storage structure, and when deployed, the storage connecting frame contacts the inner wall of the tower and is fixedly mounted on the inner wall of the tower via fixing members. The hanging ladder is arranged inside the tower and mounted on the storage connecting frame, and the hanging ladder and the storage connecting frame form a triangular stable structure. The storage connecting frame of the present invention can be quickly deployed and positioned, thereby enabling rapid connection and installation with the inner wall of the tower. Finally, the hanging ladder is hung on the storage connecting frame to complete the construction of the ladder structure.

Description

Technical Field

[0001] The present invention relates to the field of wind power towers, and in particular to a tower ladder structure. Background Art

[0002] The production process of wind turbine tower is generally as follows: CNC cutting machine cuts the material, thick plate needs to be beveled, plate rolling machine rolls the plate into shape, spot welding, positioning, and confirmation before welding the inner and outer longitudinal seams. After the roundness is checked, if there is any problem, a second rounding is performed. After the single section of the cylinder is welded, the hydraulic group is used to assemble the roller frame for spot welding, the inner and outer circumferential seams are welded, straightness and other tolerances are checked, and after the flange is welded, non-destructive testing of the weld and flatness inspection are carried out. After sandblasting and painting, the internal parts are installed and the finished product is inspected, and then it is transported to the installation site.

[0003] At present, the ladder structure inside the wind turbine tower is mostly installed by directly fixing it with bolts. A lifting ladder is required to install the bolts at different heights of the ladder structure, and the installation process is relatively complicated.

[0004] Therefore, it is urgent to propose a tower ladder structure to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a tower ladder structure to achieve rapid installation of the ladder structure and simplify the installation process of the ladder structure.

[0006] In order to solve the above technical problems, the present invention provides a tower ladder structure, comprising a storage connection frame, a fixing member and a hanging ladder;

[0007] The storage connecting frame adopts a storage structure. When the storage connecting frame is unfolded, it is in contact with the inner wall of the tower, and the storage connecting frame is fixedly mounted on the inner wall of the tower through a fixing piece.

[0008] The hanging ladder is arranged inside the tower, and the hanging ladder is mounted on the storage connection frame, and the hanging ladder and the storage connection frame form a triangular stable structure.

[0009] Furthermore, the receiving connection frame includes a connection plate, on which a plurality of connection frames are rotatably mounted, and the connection frames are evenly and circumferentially distributed on the connection plate, and the connection frames are fixedly mounted on the inner wall of the tower through fixing members.

[0010] Furthermore, a rotation hole is provided at the center of the connecting disk, a positioning cover is rotatably installed in the rotation hole through a pin shaft, and the connecting frame is located inside the positioning cover when stored.

[0011] Further, a positioning groove matching with the connecting frame is arranged on the outer edge of the positioning cover, and the positioning grooves are uniformly distributed on the outer edge of the positioning cover, and the opening end of the positioning groove is chamfered.

[0012] Further, the pin shaft is rotatably installed on the inner bottom surface of the positioning cover through a bearing, and the bearing is embedded in the positioning cover.

[0013] Further, an adsorption magnetic sheet is arranged on the inner bottom surface of the positioning cover, and a rotating handle is arranged on the outer bottom surface of the positioning cover.

[0014] Further, the fixing member includes a fixing piece rotatably installed at the end of the connecting frame, a fixing hole is arranged on the fixing piece, a fastening bolt penetrates through the fixing hole, and the fastening bolt is threadedly installed on the inner wall of the tower barrel.

[0015] Further, the hanging ladder includes a hanging ladder, and two self-locking hooks matching with the connecting frame are symmetrically arranged on the side surface of the hanging ladder, and the self-locking hooks form a self-locking structure when the connecting frame enters.

[0016] Further, the self-locking hook includes a hook body in an inverted "U" shape, a limiting strip is rotatably installed in the hook body, and the limiting strip inclines towards the entry of the connecting strip and abuts against the inner wall of the hook body.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The storage connecting frame of the present invention can be quickly and synchronously unfolded and positioned. While being able to quickly realize the connection and installation with the inner wall of the tower barrel, it can also make the storage connecting frame more uniformly and stably stressed. Finally, by hanging the hanging ladder on the storage connecting frame, the construction of the ladder structure can be realized, which has the characteristics of simple structure and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the tower barrel ladder structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the hanging ladder structure of the tower barrel ladder structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the storage connecting frame structure of the tower barrel ladder structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the positioning cover structure of the tower barrel ladder structure of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The tower ladder structure of the present invention will be described in more detail below with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0024] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are provided solely for the purpose of assisting in the description of the embodiments of the present invention.

[0025] like Figures 1 to 4 As shown, an embodiment of the present invention proposes a tower ladder structure, comprising a storage connection frame 1, a fixing member 2 and a hanging ladder 3;

[0026] The storage connecting frame 1 adopts a storage structure. When the storage connecting frame 1 is unfolded, it is in contact with the inner wall of the tower. The storage connecting frame 1 is detachably fixed on the inner wall of the tower through the fixing member 2.

[0027] The hanging ladder 3 is arranged inside the tower, and the hanging ladder 3 is mounted on the storage connection frame 1, and the hanging ladder 3 and the storage connection frame 1 form a triangular stable structure.

[0028] The tower ladder structures in the embodiment of the present invention may be provided in a plurality in one section of the tower, and the corresponding tower ladder structures may be provided at required heights in a form of sequential arrangement from bottom to top.

[0029] In this embodiment, after the tower is built, when it is necessary to install a ladder, the storage connecting frame 1 is unfolded and the storage connecting frame 1 is fixed to the inner wall of the tower using the fixing part 2, and then the hanging ladder 3 is hung and fixed to the storage connecting frame 1. At this time, a triangular stable structure is formed between the hanging ladder 3 and the storage connecting frame 1, and the hanging ladder 3 is stably installed on the storage connecting frame 1 to complete the rapid construction of the ladder structure.

[0030] Furthermore, the storage connection frame 1 includes a connection plate 4, on which multiple connection frames 5 are rotatably mounted, and the connection frames 5 are evenly and circumferentially distributed on the connection plate 4, and the connection frames 5 are fixedly mounted on the inner wall of the tower through the fixing parts 2.

[0031] Specifically, the connecting frame 5 is rotatably mounted on the connecting plate 4 via a rotating shaft (not numbered). When it is needed to be stored, the connecting frame 5 is rotated into the connecting plate 4, where it takes up less space and is convenient for storage. When it is necessary to store the connecting frame 1, the connecting frame 5 is opened to the same angle and mounted on the inner wall of the tower using the fixing member 2. The connecting frame 5 adopts a storage structure, and the storage state of the connecting frame 1 can be switched between the installation state and the storage state by rotating the connecting frame 5.

[0032] Furthermore, the connecting frame 5 may be in a broken line shape or an arc shape, so that after being connected to the tower, the whole may be in a tripod shape (taking three connecting frames 5 as an example), thereby having better stability.

[0033] Furthermore, a rotation hole 6 is provided at the center of the connecting disk 4 , a positioning cover 8 is rotatably installed in the rotation hole 6 via a pin shaft 7 , and the connecting frame 5 is located inside the positioning cover 8 when stored.

[0034] In this embodiment, when the storage connecting frame 1 is not installed, the connecting frame 5 is closed and located inside the positioning cover 8. The positioning cover 8 limits the activity space of the connecting frame 5. At this time, the connecting frame 5 does not extend outward. At this time, the storage connecting frame 1 is in a storage state, which greatly reduces the space occupied by the storage connecting frame 1 and facilitates the storage connecting frame 1 to be placed inside the tower for installation.

[0035] Furthermore, the outer edge of the positioning cover 8 is provided with positioning grooves 9 that match the connecting frame 5, and the positioning grooves 9 are evenly distributed on the outer edge of the positioning cover 8, and the open ends of the positioning grooves 9 are chamfered.

[0036] Specifically, when installing the storage connecting frame 1, the connecting frame 5 passes through the positioning slot 9, and the positioning cover 8 rotates during the rotation process, so that the connecting plate 4 is located at the center of the tower after installation, ensuring the uniformity of the force on the storage connecting frame 1, thereby improving the service life of the ladder structure.

[0037] In a specific embodiment, the pin 7 is rotatably mounted on the inner bottom surface of the positioning cover 8 via a bearing, and the bearing is embedded in the positioning cover 8. The positioning cover 8 is rotatably mounted on the connecting plate 4 via the bearing, which can effectively reduce the wear between the positioning cover 8 and the connecting plate 4 and play a certain protective role.

[0038] Furthermore, an adsorption magnetic sheet 10 is provided on the inner bottom surface of the positioning cover 8 , and a rotating handle 11 is provided on the outer bottom surface of the positioning cover 8 .

[0039] Specifically, the positioning cover 8 is inserted into the positioning groove 9 through the pin shaft 7 and can rotate around the pin shaft 7. At this time, the connecting frame 5 can be synchronously unfolded as the positioning cover 8 rotates. Finally, the connecting frame 5 is fixedly installed on the inner wall of the tower barrel through the fixing member 2. After the construction of the storage connecting frame 1 is completed, the positioning cover 8 magnetically adsorbed on the connecting disk 4 can be directly removed by force.

[0040] Furthermore, the fixing member 2 includes a fixing piece 12 rotatably installed at the end of the connecting frame 5. A fixing hole 13 is provided on the fixing piece 12. A fastening bolt 14 is penetrated through the fixing hole 13, and the fastening bolt 14 is threadedly installed on the inner wall of the tower barrel.

[0041] In this embodiment, the positioning cover 8 is rotated to synchronously unfold the connecting frame 5. When the fixing piece 12 is fully fitted with the inner wall of the tower barrel, the fixing piece 12 is fixed to the inner wall of the tower barrel by using the fastening bolt 14, and the installation of the storage connecting frame 1 is completed. The installation process is simple, and the connecting frame 5 is synchronously unfolded, which can form a uniform and stable support for the connecting disk 4.

[0042] Furthermore, the hanging ladder 3 includes a hanging ladder 15. Two self-locking hooks 16 matching the connecting frame 5 are symmetrically arranged on the side of the hanging ladder 15. The self-locking hooks 16 form a self-locking structure when the connecting frame 5 enters.

[0043] Specifically, after the installation of the storage connecting frame is completed, the hanging ladder 3 is passed through the gap of the connecting frame 5, and then the hanging ladder 15 is moved downward. The self-locking hooks 16 are hooked on the connecting frame 5 and form self-locking. At this time, the installation of the hanging ladder 3 is completed, and the operation is simple and the connection is reliable.

[0044] Furthermore, the self-locking hook 16 includes a hook body 17 in an inverted "U" shape. A limiting bar 18 is rotatably installed in the hook body 17, and the limiting bar 18 inclines toward the entry of the connecting bar and abuts against the inner wall of the hook body 17.

[0045] In this embodiment, after the hook body 17 is hooked on the connecting frame 5, the limiting bar 18 rotates under the action of gravity and abuts against the inner wall of the hook body 17. At this time, the connecting bar is located inside the limiting bar 18 and cannot be drawn out, effectively preventing the hook body 17 from falling off and ensuring the reliability of the connection of the hook body 17.

[0046] Compared with the prior art, the present invention has at least the following beneficial effects:

[0047] The storage connecting frame of the present invention can be quickly and synchronously unfolded and positioned. It can quickly realize the connection and installation with the inner wall of the tower barrel, and at the same time, it can make the storage connecting frame more uniformly and stably stressed. Finally, by hanging the hanging ladder on the storage connecting frame, the construction of the ladder structure can be realized, which has the characteristics of simple structure and convenient operation.

[0048] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A tower ladder structure, characterized in that: It includes a storage connection frame, a fixing piece and a hanging ladder; The storage connection frame adopts a storage structure. When the storage connection frame is unfolded, it is in close contact with the inner wall of the tower barrel, and the storage connection frame is detachably and fixedly installed on the inner wall of the tower barrel through a fixing piece; The hanging ladder is arranged inside the tower barrel. The hanging ladder is erected on the storage connection frame, and the hanging ladder and the storage connection frame form a triangular stable structure; The storage connection frame includes a connection disk. Multiple connection frames are rotatably installed on the connection disk, and the connection frames are evenly and circumferentially distributed on the connection disk. The connection frames are fixedly installed on the inner wall of the tower barrel through fixing pieces; A rotation hole is arranged at the center position of the connection disk. A positioning cover is rotatably installed in the rotation hole through a pin shaft, and the connection frame is located inside the positioning cover when being stored; 2. The tower ladder structure according to claim 1, characterized in that: The outer edge of the positioning cover is provided with positioning grooves matching the connection frames, and the positioning grooves are evenly distributed on the outer edge of the positioning cover. The opening ends of the positioning grooves are chamfered; 3. The tower ladder structure according to claim 1, characterized in that: The pin shaft is rotatably installed on the inner bottom surface of the positioning cover through a bearing, and the bearing is embedded on the positioning cover; 4. The tower ladder structure according to claim 1, wherein: An adsorption magnetic sheet is arranged on the inner bottom surface of the positioning cover, and a rotation handle is arranged on the outer bottom surface of the positioning cover; 5. The tower ladder structure according to claim 1, wherein: The fixing piece includes a fixing plate rotatably installed at the end of the connection frame. A fixing hole is arranged on the fixing plate. A fastening bolt penetrates through the fixing hole, and the fastening bolt is threadedly installed on the inner wall of the tower barrel; 6. The tower ladder structure according to claim 1, characterized in that: The hanging ladder includes a hanging ladder. Two self-locking hooks matching the connection frames are symmetrically arranged on the side surface of the hanging ladder. The self-locking hooks form a self-locking structure when the connection frames enter; 7. The tower ladder structure according to claim 6, characterized in that: The self-locking hook includes a hook body in an inverted "U" shape. A limiting strip is rotatably installed in the hook body, and the limiting strip inclines towards the entry of the connection strip and abuts against the inner wall of the hook body;

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