Auxiliary ramp for offshore wind turbines

Abstract

To provide an auxiliary ladder for an offshore wind turbine, which can move in response to the up and down motion of a ship, is easy to use, and can effectively solve the safety risks that exist when employees climb onto the wind turbine. [Solution] An auxiliary ladder for an offshore wind turbine includes a ladder assembly 1, which is fixedly attached to the offshore wind turbine, an auxiliary ladder body 2 is movably connected to the lower end of the ladder assembly, a second step 3 for connecting to a ship is fixedly attached to the front of the auxiliary ladder body, and vertical bars 4 are fixedly attached to both the left and right sides of the auxiliary ladder body. This device utilizes the flexibility of the auxiliary ladder body instead of a rope by fitting the ladder assembly, auxiliary ladder body, second step and the movable assembly, and the auxiliary ladder body and ladder assembly are connected to each other so that they can be moved up and down.

Description

[Technical field]

[0001] The present invention relates to the field of ladder technology, and more particularly to an auxiliary ladder for offshore wind turbines. [Background technology]

[0002] In deep sea areas far from the continent, there are many excellent wind resources that can be exploited, and the market and application prospects are broad. When developing wind resources in deep sea areas, the currently commonly adopted method requires fixing the foundation of the offshore wind turbine using various through-pile structures fixed to the seabed. However, due to the poor marine environment with strong winds and waves, when climbing the wind turbine, the ship may swing strongly, pushing the workers or causing them to fall into the water. In order to facilitate climbing to the offshore wind turbine, various through-pile structures for fixing the foundation of the offshore wind turbine have a gangway, and the gangway has a mooring post for fixing the ship, and the ship's rope is tied to the mooring post to climb to the wind turbine.

[0003] However, tying the ship's rope to a mooring post poses safety risks, as the rope may sway in windy or choppy weather, pushing against workers who have just climbed onto the gangway if the ship starts rocking up and down, or if the ship is rocked by waves and loses its grip on the swinging gangway, workers may fall into the sea or be pushed against the wind turbine or ship and injured. Summary of the Invention [Problem to be solved by the invention]

[0004] In response to the deficiencies of the prior art, the present invention provides an auxiliary ladder for offshore wind turbines, which has the advantages of ensuring the safety of workers when climbing onto a wind turbine, making it easy to extend and retract the auxiliary ladder, and improving the practicality of the auxiliary ladder, thereby solving the problems identified in the above background art. [Means for solving the problem]

[0005] The technical solution provided by the present invention is as follows: An auxiliary ladder for an offshore wind turbine, comprising: a ladder assembly, the ladder assembly being fixedly mounted on an offshore wind turbine, an auxiliary ladder body being movably connected to a lower end of the ladder assembly, a second step for connecting a ship being fixedly mounted to a front of the auxiliary ladder body, vertical bars being fixedly mounted on both left and right sides of the auxiliary ladder body, a disk being fixedly connected to an upper end of the vertical bar, a round bar being fixedly mounted on a side of the disk away from the vertical bar, and the upper end of the round bar extends into the inside of the ladder assembly, a movable assembly located inside the ladder assembly is fixedly mounted to the upper end of the round bar, a spring for connecting the ladder assembly is provided at the upper end of the movable assembly, a drive structure is connected to the outside of the auxiliary ladder body, and a remote control is wirelessly connected to the auxiliary ladder body.

[0006] Preferably, the ladder assembly includes a post, a handrail and a first step, the front of the post being fixedly connected to the rear end of the handrail, and a plurality of first steps being evenly arranged inside two adjacent posts.

[0007] Preferably, a columnar groove is provided at the lower end of the upright pole, and the inner wall of the columnar groove is movably fitted to the round bar, the movable assembly and the outer wall of the spring, and a sliding groove is uniformly provided on the inner wall of the columnar groove.

[0008] Preferably, an anti-slip assembly is fixedly attached to an upper end surface of the first platform, and a plurality of water collecting grooves are evenly formed on the upper end surface of the anti-slip assembly.

[0009] Preferably, the movable assembly includes a lifting plate and a slider, the lower end surface of the lifting plate is fixedly connected to the upper end of a round bar, the upper end surface of the lifting plate is fixedly connected to the lower end of a spring, the upper end of which is fixedly connected to the top surface of a columnar groove, a slider is fixedly attached to the outer wall of the lifting plate, and the outer wall of the slider on the side away from the lifting plate is slidably connected to the inner wall of the sliding groove.

[0010] Preferably, the anti-slip assembly includes an anti-slip pad and a protrusion, a plurality of protrusions are uniformly and fixedly attached to the upper end surface of the anti-slip pad, the lower end surface of the anti-slip pad is fixedly connected to the upper end surface of the first step, the left and right ends of the first step are fixedly connected to the inner sides of the uprights on both the left and right sides, respectively, the connection part between the anti-slip pad and the water collection groove is formed like a slope, and the bottom surface of the water collection groove is formed like a slope that is low at the front and high at the rear. Effect of the Invention

[0011] Compared with the prior art, the present invention has the following advantageous effects:

[0012] The invention utilizes the elasticity of the auxiliary ladder body instead of a rope through the fitting of the ladder assembly, the auxiliary ladder body, the second step and the movable assembly, and adopts a connection method in which the auxiliary ladder body and the ladder assembly pass through the movable assembly, so that the auxiliary ladder body can move according to the up and down movement of the ship. In addition, by installing the second step, the auxiliary ladder body can be easily used, and the safety risks that exist when employees climb onto a wind turbine can be effectively resolved.

[0013] The present invention realizes an anti-slip effect on the first step by fitting the ladder assembly, the anti-slip assembly and the water collection groove, and effectively solves the problem of slipping when stepping on the first step. The anti-slip assembly increases the friction between the sole of the worker's shoe and the contact surface of the first step, and at the same time, the water collection groove is used to collect and drain the water on the first step, thereby avoiding slipping when stepping on the first step. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of the structure of the present invention. [Diagram 2] FIG. 2 is a side view of the vertical bar of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view of the upright of the present invention. [Figure 4] FIG. 4 is a top view of the first platform of the present invention. [Diagram 5] FIG. 5 is a top view of the anti-slip assembly of the present invention. [Figure 6] FIG. 6 is an enlarged view of part A in FIG. 3 of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The technical solutions of the embodiments of the present invention are described below in a clear and complete manner in conjunction with the drawings of the embodiments of the present invention. Of course, the embodiments described herein are only a part of the embodiments of the present invention, and are not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without paying creative labor are the subject of protection of the present invention.

[0016] As shown in Figures 1 and 3, this is an auxiliary ladder for an offshore wind turbine, and includes a ladder assembly 1, which is fixedly attached to the offshore wind turbine, and an auxiliary ladder main body 2 is movably connected to the lower end of the ladder assembly 1. The auxiliary ladder main body 2 is arranged to be extendable and retractable, thereby making it possible to adjust the usable length of the auxiliary ladder main body 2 itself and further expanding the range of application of the auxiliary ladder main body 2. A second step 3 for connecting to the ship is fixedly attached to the front of the auxiliary ladder body 2, and the second step 3 is arranged like a step with a relatively large sagging angle, so that the auxiliary ladder body 2 will not come off the ship due to the up and down rolling of the ship. Vertical bars 4 are fixedly attached to both the left and right sides of the auxiliary ladder body 2, a disk 5 is fixedly connected to the upper end of the vertical bar 4, and a round bar 6 is fixedly attached to the side of the disk 5 away from the vertical bar 4, and the upper end of the round bar 6 extends into the inside of the ladder assembly 1, and a movable assembly 7 located inside the ladder assembly 1 is fixedly attached to the upper end of the round bar 6. The up and down moving mechanism of the movable assembly 7 allows the auxiliary ladder body 2 to move due to the up and down rolling of the ship. A spring 8 for connecting the ladder assembly 1 is provided at the upper end of the movable assembly 7. A drive structure is connected to the outside of the auxiliary ladder body 2, and the auxiliary ladder body 2 is wirelessly connected to a remote control. An electric extension device is provided on the side of the auxiliary ladder main body 2 that approaches the offshore wind turbine, allowing the auxiliary ladder main body 2 to be extended and retracted toward the ship. The electric extension device can also be controlled to extend and retract via a remote control, solving the problem of unmanned operation.

[0017] The ladder assembly 1 includes a post 101, a handrail 102 and a first step 103, the front of the post 101 being fixedly connected to the rear end of the handrail 102, and a plurality of first steps 103 being evenly arranged on the inside of two adjacent posts 101, which facilitates use of the ladder assembly 1.

[0018] As shown in Figures 2 and 4, a columnar groove 11 is opened at the lower end of the upright pillar 101, and the inner wall of the columnar groove 11 is movably fitted into the inner walls of the round bar 6, the movable assembly 7 and the spring 8. A sliding groove 12 is uniformly opened on the inner wall of the columnar groove 11, and the ladder assembly 1 and the auxiliary ladder body 2 are connected by installing the round bar 6, the movable assembly 7 and the spring 8, so that the auxiliary ladder body 2 can move up and down.

[0019] An anti-slip assembly 9 is fixedly attached to the upper end surface of the first step 103, and a plurality of water collection grooves 10 are opened on the upper end surface of the anti-slip assembly 9. The installation of the water collection grooves 10 can guide the flow of water on the first step 103.

[0020] As shown in Figures 5 and 6, the movable assembly 7 includes a lifting plate 701 and a slider 702, the lower end surface of the lifting plate 701 is fixedly connected to the upper end of the round bar 6, the upper end surface of the lifting plate 701 is fixedly connected to the lower end of the spring 8, and the upper end of the spring 8 is fixedly connected to the top surface of the columnar groove 11, the spring 8 serves to connect the upright column 101 and the movable assembly 7, the slider 702 is fixedly attached to the outer wall of the lifting plate 701, and the outer wall of the slider 702 on the side away from the lifting plate 701 is slidably connected to the inner wall of the sliding groove 12.

[0021] The anti-slip assembly 9 includes an anti-slip pad 901 and protrusions 902, and a number of protrusions 902 are uniformly and fixedly attached to the upper end surface of the anti-slip pad 901, and the anti-slip assembly 9 increases the friction between the sole of the worker's shoe and the contact surface of the first step 103, preventing the worker from slipping when stepping on the first step 103. The lower end surface of the anti-slip pad 901 is fixedly connected to the upper end surface of the first step 103, and both left and right ends of the first step 103 are fixedly connected to the insides of the uprights 101 on both the left and right sides, respectively, the connection between the anti-slip pad 901 and the water collecting groove 10 is formed like a slope, and the bottom surface of the water collecting groove 10 is formed like a slope that is low in the front and high in the rear, and the slope is provided to guide the flow of water.

[0022] Principle of operation: When using, first, the worker uses the remote control to control the external driving mechanism of the auxiliary ladder body 2, and the external driving mechanism controls the extension and retraction of the auxiliary ladder 2 itself, thereby extending one end of the auxiliary ladder body 2 toward the ship until the second step 3 moves to the desired position on the ship, and the second step 3 is set like a step with a relatively large sagging angle, so that the second step 3 will not leave the ship due to the up and down rolling of the ship. In addition, the round bar 6, the movable assembly 7 and the spring 8 are installed between the ladder assembly 1 and the auxiliary ladder body 2, so that the auxiliary ladder body 2 can move due to the up and down rolling of the ship. Finally, the worker reaches the ladder assembly 1 through the auxiliary ladder body 2 via the second step 3, and the anti-slip pad 901 and the protrusion 902 installed here increase the friction between the sole of the worker's shoe and the contact surface of the first step 103, and the opened water collecting groove 10 collects and flows the water on the first step 103, preventing the water from accumulating on the first step 103. The model number of the auxiliary ladder body 2 of this application is the dz telescopic ladder manufactured by Ida.

[0023] It should be explained that in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that such actual relation or sequence exists between these entities or operations. Also, the terms "comprise", "comprise", or any other variant are intended to cover the non-exclusive inclusion of a process, method, article, or device that includes a set of elements, including not only those elements, but also other elements not expressly described or inherent to such process, method, article, or device. Also, in the drawings of the present invention, the fill pattern is intended to distinguish layers, and is not meant to be limiting in any way.

[0024] Although the embodiments of the present invention have been shown and described above, those skilled in the art may make various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is limited by the claims and their equivalents. [Explanation of symbols]

[0025] 1: ladder assembly, 101: upright pillar, 102: handrail, 103: first step, 2: auxiliary ladder body, 3: second step, 4: vertical bar, 5: disk, 6: round bar, 7: movable assembly, 701: lift plate, 702: slider, 8: spring, 9: anti-slip assembly, 901: anti-slip pad, 902: protrusion, 10: water collection groove, 11: columnar groove, 12: sliding groove

Claims

1. An auxiliary ladder for an offshore wind turbine, A ladder assembly (1), The ramp assembly (1) is fixedly attached to the offshore wind turbine, An auxiliary ladder body (2) is movably connected to the lower end of the ladder assembly (1), A second step (3) for connecting a boat is fixedly attached to the front of the auxiliary ladder body (2), A vertical bar (4) is fixedly attached to both the left and right sides of the auxiliary ladder body (2), A disk (5) is fixedly connected to the upper end of the vertical bar (4); A round bar (6) is fixedly attached to the side of the disk (5) away from the vertical bar (4), and The upper end of the round bar (6) extends into the interior of the ladder assembly (1), A movable assembly (7) located inside the ladder assembly (1) is fixedly attached to the upper end of the round bar (6). A spring (8) is provided at the upper end of the movable assembly (7) for connecting the ladder assembly (1), A drive mechanism is connected to the outside of the auxiliary ladder body (2), and The auxiliary ladder for an offshore wind turbine is connected to the auxiliary ladder body (2) wirelessly via a remote control.

2. The ladder assembly (1) includes a post (101), a handrail (102) and a first step (103); The front of the upright (101) is fixedly connected to the rear end of the handrail (102); The auxiliary ladder for an offshore wind turbine according to claim 1, wherein a plurality of first steps (103) are uniformly arranged inside the two adjacent uprights (101).

3. A columnar groove (11) is provided at the lower end of the upright column (101), and The inner wall of the columnar groove (11) is movably fitted to the outer wall of the round bar (6), the movable assembly (7) and the spring (8); 3. The auxiliary ladder for offshore use according to claim 2, wherein a sliding groove (12) is uniformly formed on the inner wall of the columnar groove (11).

4. A non-slip assembly (9) is fixedly attached to the upper end surface of the first step (103); The auxiliary ladder for an offshore wind turbine according to claim 2, wherein a plurality of water collection grooves (10) are uniformly provided on an upper end surface of the anti-slip assembly (9).

5. The movable assembly (7) includes a lift plate (701) and a slider (702); The lower end surface of the lift plate (701) is fixedly connected to the upper end of the round bar (6), The upper end surface of the lift plate (701) is fixedly connected to the lower end of the spring (8); The upper end of the spring (8) is fixedly connected to the top surface of the columnar groove (11); A slider (702) is fixedly attached to the outer wall of the lift plate (701), and 4. The auxiliary ladder for an offshore wind turbine according to claim 3, wherein an outer wall of the slider (702) on a side remote from the lifting plate (701) is slidably connected to an inner wall of the sliding groove (12).

6. The anti-slip assembly (9) includes an anti-slip pad (901) and a protrusion (902); A plurality of protrusions (902) are uniformly and fixedly attached to the upper end surface of the anti-slip pad (901); The lower end surface of the anti-slip pad (901) is fixedly connected to the upper end surface of the first step (103); The left and right ends of the first step (103) are fixedly connected to the insides of the left and right upright columns (101), The connection between the anti-slip pad (901) and the water collecting groove (10) is provided like a slope, and The auxiliary ladder for an offshore wind turbine according to claim 4, wherein the bottom surface of the water collection groove (10) is provided as a slope with a low front and a high rear.

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