Composite material wing-shaped sail maintenance ladder

Abstract

The utility model relates to the technical field of sail maintenance ladders, in particular to a composite material wing-shaped sail maintenance ladder which comprises a working table, a placing box, a main ladder frame, a telescopic column and a side ladder frame, the telescopic column is arranged on the bottom side of the middle end in a placing cavity of the placing box, and the middle of the lower end of the working table is connected with the top end of the telescopic column. The main ladder assembly is arranged in the sliding cavity of the workbench and is correspondingly and slidably connected with the bottom end of the sliding cavity, side ladder assemblies are arranged on the outer sides of the storage cavities in the two sides of the workbench, and the lower end of each side ladder assembly is correspondingly and rotatably connected with the outer end of the corresponding storage cavity. By arranging the workbench, the placement box, the main ladder assembly telescopic columns and the side ladder assemblies, the overall structure has two modes of storage and unfolding, when the ladder is not used, the workbench is retracted to the upper end of the placement box, the main ladder assembly and the side ladder assemblies are stored in the workbench, transportation and storage are convenient, when the ladder is used, the main ladder assembly and the side ladder assemblies are unfolded, multi-directional ascending and descending are convenient, and the ladder is convenient to use. And the convenience of overhauling and maintaining the sail blades is improved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of sail maintenance ladders. Specifically, it relates to a composite airfoil sail maintenance ladder. Background Technique

[0002] In recent years, with the continuous improvement of China's scientific and technological strength, the application of sails on ships has become increasingly mature. Wind is a clean energy source in nature that is inexhaustible. The applied research on using wind energy for navigation assistance has great significance today in the face of the energy crisis.

[0003] The airfoil sail has an airfoil-shaped cross-section. The airfoil sail utilizes the offshore wind energy and continuously adjusts the angle of attack to maximize the navigation assistance thrust. When combined with a diesel engine, it forms a hybrid propulsion power system for the ship. The diesel engine provides the main power, and the airfoil sail provides auxiliary power. With the large-scale development of sails, the size of the sail blades gradually increases, resulting in more difficult assembly and maintenance of the sail blades of the sail. Special tooling is required, which is time-consuming, laborious and costly. In addition, during the maintenance of the sail, maintenance personnel need to maintain the inside and outside of the sail. Currently, the maintenance operation is that the maintenance personnel need to crawl through the sail skeleton. Due to the relatively complex structure of the sail skeleton, it is very inconvenient for the maintenance personnel to maintain the sail blades in the sail skeleton, and the safety of the maintenance personnel is poor. Therefore, there is an urgent need for a new maintenance ladder for sails. Content of the Utility Model

[0004] The purpose of the utility model is to provide a composite airfoil sail maintenance ladder to solve the above technical problems.

[0005] The utility model is realized as follows. A composite airfoil sail maintenance ladder includes a workbench, a placement box, a main ladder frame, telescopic columns and side ladder frames. A placement cavity is provided in the middle of the placement box. The telescopic columns are arranged at the bottom side of the middle end inside the placement cavity. The middle part of the lower end of the workbench is connected to the top ends of the telescopic columns. A sliding cavity is provided in the middle of the upper end of the workbench. The main ladder frame is arranged in the sliding cavity and is slidably connected to the bottom end of the sliding cavity correspondingly. Receiving cavities are provided on both sides of the upper end of the workbench. A side ladder frame is provided outside each receiving cavity. The front and rear sides of the lower end of each side ladder frame are rotatably connected to the front and rear sides of the outer end of the receiving cavity correspondingly.

[0006] Further, the main ladder frame includes slide rails, a sliding frame and telescopic scissor side frames. There are two slide rails, which are spaced apart and arranged on both sides of the bottom end of the sliding cavity. The sliding frame is arranged between the upper ends of the two slide rails, and the two sides of the lower end of the sliding frame are slidably connected to the two slide rails correspondingly. Telescopic scissor side frames are provided on both sides of the front end of the sliding frame. The rear end of each telescopic scissor side frame is rotatably connected to the side surface of the sliding frame correspondingly.

[0007] Further, a main ladder board is provided at the middle end of the sliding frame, and main ladder boards are provided at the borrowing points at the middle ends of the two telescopic scissor side frames.

[0008] Further, each side ladder frame includes a fixed side frame, a telescopic rod, and a rotating shaft. Rotating shafts are provided on both the front and rear sides at the lower end of the fixed side frame. The outer ends of each rotating shaft are correspondingly rotatably connected to the front and rear sides at the outer end of the storage cavity. Telescopic rods are provided on the inner sides at both the front and rear ends of the fixed side frame, and the outer sides of the upper ends of each telescopic rod are slidably connected to the corresponding fixed side frame.

[0009] Further, side ladder boards are provided between the telescopic support rods of the two telescopic rods.

[0010] Further, sliding bolts are provided on the outer sides of the upper ends of each telescopic rod, and sliding grooves are provided in the middle of both the front and rear sides of the fixed side frame. The outer ends of each sliding bolt correspondingly pass through the sliding grooves and are slidably connected to the sliding grooves.

[0011] Further, moving pulleys are provided at the four corners of the bottom end of the placement box.

[0012] Further, stable support members are provided at the four corners of the side surface of the placement box.

[0013] Further, each stable support member includes a connecting rod, a triangular rotating frame, and a supporting abutting rod. The inner side of the connecting rod is connected to the side surface of the placement box, the inner end of the triangular rotating frame is correspondingly rotatably connected to the outer end of the connecting rod, and the upper end of the supporting abutting rod is correspondingly rotatably connected to the lower side of the outer end of the triangular rotating frame.

[0014] Further, reinforcing rods are provided in the middle of both the upper end and the lower end of the fixed side frame, and anti-slip pads are provided at the bottom ends of each supporting abutting rod.

[0015] Compared with the prior art, the present utility model is a maintenance ladder for a composite airfoil sail. The workbench, the placement box, the telescopic column of the main ladder frame, and the side ladder frame have two modes of storage and deployment. When not in use, the workbench is retracted to the upper end of the placement box, the main ladder frame is slid into the workbench, and the two side ladder frames are rotated and stored inside both sides of the workbench, which is convenient for transportation and storage. When in use, the stable support members on the four sides of the placement box are unfolded and fixed, then the main ladder frame is slid out and unfolded, and at the same time, the workbench is driven by the telescopic column to rise to the designated position. At the same time, the two side ladder frames are flipped to the vertical state. When it is impossible to work up and down in the orientation of the main ladder frame, the upper and lower movement can be carried out through the two side auxiliary ladder frames on both sides, improving the convenience of overhaul and maintenance of the sail leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the general assembly of a maintenance ladder for a composite airfoil sail provided by the present utility model Figure 1 ;

[0017] Figure 2It is the general assembly of a composite airfoil sail maintenance ladder provided by the present utility model Figure 2 ;

[0018] Figure 3 It is the general assembly of a composite airfoil sail maintenance ladder provided by the present utility model Figure 3 。

[0019] The reference numerals involved in the above-mentioned drawings: workbench 1, placement box 2, stable support member 3, main ladder frame 5, moving pulley 6, telescopic column 7, side ladder frame 8, connecting rod 9, triangular rotating frame 10, supporting and resisting rod 11, slide rail 12, sliding frame 13, telescopic scissors side frame 14, main ladder board 15, fixed side frame 16, strengthening rod 17, telescopic rod 18, side ladder board 19, rotating shaft 20 Specific embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model

[0021] The implementation of the present utility model will be described in detail below with reference to specific embodiments

[0022] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances

[0023] Refer to Figures 1-3 As shown, it is a preferred embodiment provided by the present utility model

[0024] A composite airfoil sail maintenance ladder includes a workbench 1, a placement box 2, a main ladder frame 5, a telescopic column 7 and a side ladder frame 8. A placement cavity is provided in the middle of the placement box 2. The telescopic column 7 is arranged at the bottom side of the middle end inside the placement cavity. The middle part of the lower end of the workbench 1 is connected to the top end of the telescopic column 7. A sliding cavity is provided in the middle of the upper end of the workbench 1. The main ladder frame 5 is arranged in the sliding cavity and is slidably connected to the bottom end of the sliding cavity correspondingly. Storage cavities are provided on both sides of the upper end of the workbench 1. A side ladder frame 8 is provided on the outside of each storage cavity. The front and rear sides of the lower end of each side ladder frame 8 are rotatably connected to the front and rear sides of the outer end of the storage cavity correspondingly

[0025] The main ladder frame 5 includes slide rails 12, a sliding frame 13 and telescopic scissors side frames 14. There are two slide rails 12, which are spaced apart on both sides of the bottom end of the sliding cavity. The sliding frame 13 is arranged between the upper ends of the two slide rails 12, and the two sides of the lower end of the sliding frame 13 are slidably connected to the corresponding two slide rails 12. Telescopic scissors side frames 14 are provided on both sides of the front end of the sliding frame 13, and the rear end of each telescopic scissors side frame 14 is rotatably connected to the corresponding side surface of the sliding frame 13. The main ladder frame 5 is provided with slide rails 12 and a sliding frame 13, which facilitates the sliding storage of the telescopic scissors side frames 14 into the workbench 1. The telescopic scissors side frames 14 are provided to facilitate the telescopic expansion of the main ladder board 15.

[0026] A main ladder board 15 is provided in the middle of the sliding frame 13, and main ladder boards 15 are provided at the hinge points in the middle of the two telescopic scissors side frames 14. The main ladder board 15 is provided to facilitate the up and down movement of maintenance personnel.

[0027] Each side ladder frame 8 includes a fixed side frame 16, a telescopic rod 18 and a rotating shaft 20. Rotating shafts 20 are provided on both the front and rear sides of the lower end of the fixed side frame 16, and the outer ends of each rotating shaft 20 are rotatably connected to the corresponding front and rear sides of the outer end of the storage cavity. Telescopic rods 18 are provided on the inner sides of the front and rear ends of the fixed side frame 16, and the outer sides of the upper ends of each telescopic rod 18 are slidably connected to the corresponding fixed side frame 16. The side ladder frame 8 is provided with a fixed side frame 16 to facilitate the installation and fixation of the telescopic rod 18 and the side ladder board 19. The telescopic rod 18 is provided to facilitate the telescopic movement of the multiple side ladder boards 19. The rotating shaft 20 is provided to facilitate the rotational connection of the fixed side frame 16 with the workbench 1.

[0028] Side ladder boards 19 are provided between the telescopic struts of the two telescopic rods 18. The side ladder boards 19 are provided to facilitate the up and down movement of maintenance personnel.

[0029] Sliding bolts are provided on the outer sides of the upper ends of each telescopic rod 18, and sliding grooves are provided in the middle of the front and rear sides of the fixed side frame 16. The outer end of each sliding bolt correspondingly passes through the sliding groove and is slidably connected to the sliding groove. The telescopic rod 18 is provided with a sliding bolt to facilitate the rotational connection of the telescopic rod 18 with the fixed side frame 16.

[0030] Moving pulleys 6 are provided at the four corners of the bottom end of the placement box 2. The placement box 2 is provided with moving pulleys 6 to facilitate transportation.

[0031] Stable support members 3 are provided at the four corners of the side surface of the placement box 2. The placement box 2 is provided with stable support members 3 to facilitate the improvement of the overall structural stability.

[0032] Each stable support member 3 includes a connecting rod 9, a triangular rotating frame 10 and a supporting abutting rod 11. The inner side of the connecting rod 9 is connected to the side surface of the placement box 2. The inner end of the triangular rotating frame 10 is rotatably connected to the outer end of the connecting rod 9 correspondingly. The upper end of the supporting abutting rod 11 is rotatably connected to the lower side of the outer end of the triangular rotating frame 10 correspondingly. The stable support member 3 is provided with the connecting rod 9 to facilitate the connection of the triangular rotating frame 10. The triangular rotating frame 10 is provided to facilitate rotating the supporting abutting rod 11 to the side surface of the placement box 2 when not in use, reducing the space volume. The supporting abutting rod 11 is provided to facilitate stable support.

[0033] Reinforcing rods 17 are provided at both the middle of the upper end and the middle of the lower end of the fixed side frame 16. Anti-slip pads are provided at the bottom end of each supporting abutting rod 11. The fixed side frame 16 is provided with the reinforcing rods 17 to facilitate improving the overall firmness. The supporting abutting rod 11 is provided with the anti-slip pads to prevent slipping during support.

[0034] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A composite material airfoil sail maintenance ladder, characterized in that: It includes a workbench, a placement box, a main ladder frame, a telescopic column and a side ladder frame. A placement cavity is provided in the middle of the placement box, the telescopic column is arranged on the bottom side of the middle end of the placement cavity, the middle of the lower end of the workbench is connected with the top of the telescopic column, a sliding cavity is provided in the middle of the upper end of the workbench, the main ladder frame is arranged in the sliding cavity and is correspondingly slidably connected with the bottom end of the sliding cavity, storage cavities are provided on both sides of the upper end of the workbench, and side ladder frames are provided on the outside of each storage cavity, and the front and rear sides of the lower end of each side ladder frame are correspondingly rotatably connected with the front and rear sides of the outer end of the storage cavity.

2. A composite material airfoil sail maintenance ladder according to claim 1, characterized in that: The main ladder frame includes a slide rail, a sliding frame and a telescopic scissors side frame. There are two slide rails, which are spaced apart and distributed on both sides of the bottom end of the sliding cavity. The sliding frame is arranged between the upper ends of the two slide rails, and the two sides of the lower end of the sliding frame are correspondingly slidably connected to the two slide rails. Telescopic scissors side frames are provided on both sides of the front end of the sliding frame, and the rear end of each telescopic scissors side frame is correspondingly rotatably connected to the side of the sliding frame.

3. A composite material airfoil sail maintenance ladder according to claim 2, characterized in that: A main ladder plate is provided at the middle end of the sliding frame, and main ladder plates are provided at the middle end nodes of the two telescopic scissor side frames.

4. A composite material airfoil sail maintenance ladder according to claim 3, characterized in that: Each of the side ladder frames includes a fixed side frame, a telescopic rod and a rotating shaft. A rotating shaft is provided on both the front and rear sides of the lower end of the fixed side frame. The outer end of each rotating shaft is rotatably connected with the front and rear sides of the outer end of the storage cavity. Telescopic rods are provided on the inner sides of both the front and rear ends of the fixed side frame. The outer side of the upper end of each telescopic rod is slidably connected with the fixed side frame accordingly.

5. A composite material airfoil sail maintenance ladder according to claim 4, characterized in that: Side ladder plates are provided between the telescopic support rods of the two telescopic rods.

6. A composite material airfoil sail maintenance ladder according to claim 5, characterized in that: A sliding bolt is arranged on the outer side of the upper end of each telescopic rod, and a sliding groove is arranged in the middle of the front and rear sides of the fixed side frame, and the outer end of each sliding bolt passes through the sliding groove and is slidably connected with the sliding groove.

7. A composite material airfoil sail maintenance ladder according to claim 6, characterized in that: The four corners of the bottom end of the placement box are all provided with movable pulleys.

8. A composite material airfoil sail maintenance ladder according to claim 7, characterized in that: The four corners of the side of the placement box are all provided with stable supporting pieces.

9. A composite material airfoil sail maintenance ladder according to claim 8, characterized in that: Each of the stable support members includes a connecting rod, a triangular rotating frame and a supporting rod. The inner side of the connecting rod is connected to the side of the placement box, the inner end of the triangular rotating frame is correspondingly rotatably connected to the outer end of the connecting rod, and the upper end of the supporting rod is correspondingly rotatably connected to the lower side of the outer end of the triangular rotating frame.

10. A composite material airfoil sail maintenance ladder according to claim 9, characterized in that: The middle part of the upper end and the middle part of the lower end of the fixed side frame are both provided with reinforcement rods, and the bottom end of each supporting rod is provided with an anti-slip pad.

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