Bendable gangway ladder suitable for large-height-difference platform connection

Abstract

The utility model discloses a bendable gangway ladder suitable for large height difference platform connection. The bendable gangway ladder comprises a main body gangway ladder, an adjusting gangway ladder and an adjusting mechanism. One end of the main body gangway ladder is hinged with the adjusting gangway ladder through a connecting rotating shaft, and the other end is lapped with the landing platform. The other end of the adjusting gangway ladder is fixedly connected with the starting platform, and an upper positioning block and a lower positioning block are arranged at the end, hinged to the main gangway ladder, of the adjusting gangway ladder. The adjusting mechanism comprises an adjusting plate and an adjusting screw rod; the adjusting plate is rotationally arranged on the connecting rotating shaft, and a plurality of adjusting holes are formed in the adjusting plate; the adjusting screw rods comprise the first adjusting screw rod and the second adjusting screw rod. When the platforms are connected, after the adjusting gangway ladder is rotated by a corresponding angle according to the height difference between the platforms, the main body gangway ladder and the adjusting gangway ladder are fixedly connected in a limiting mode through the adjusting mechanism, and therefore the platforms are communicated. According to the gangway ladder, the height difference between platforms is reduced by adjusting the main body gangway ladder and the angle between the gangway ladders, and the problem that personnel and materials are difficult to go up and down due to the fact that the height difference of the platforms is too large is effectively solved.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of wind power generation hoisting construction, and more specifically, relate to a bendable gangway suitable for connecting platforms with large height differences. Background Art

[0002] In recent years, domestic offshore wind power construction has entered a stage of rapid large-scale development, and the capacity of wind turbines and the center height of the hub have increased rapidly. Currently, the center height of the hub of wind turbines with a capacity of more than 16MW that have been applied on a large scale in China has exceeded 150m and is still increasing.

[0003] As the center height of the wind turbine hub continues to increase, a large number of wind turbine installation ships have begun to increase the effective lifting height by lifting the installation platform deck to ensure that the lifting height meets the requirements when installing wind turbines. This move has alleviated the problem of insufficient lifting height while rapidly increasing the height difference between the deck of the wind turbine installation ship and the wind turbine foundation platform. At present, wind turbine installations usually use traditional steel straight gangways to connect the platforms on both sides for personnel handover and material up and down. However, as the height difference between the platforms on both sides increases, the slope of the traditional steel straight gangway increases sharply during use, and the risk of personnel and materials going up and down is extremely high. There is even a situation where the slope is too large and the gangway cannot be set up and used, resulting in personnel handovers and materials going up and down the wind turbine installation ship and the wind turbine foundation platform. The way is carried out, which greatly occupies on-site construction resources and affects the efficiency of wind turbine hoisting.

[0004] In summary, when hoisting large-capacity wind turbines, the height difference between the platforms on both sides is too large, which makes the traditional steel straight gangway unable to meet the needs of on-site personnel handover and material loading and unloading, which has a great impact on the normal progress of on-site wind turbine hoisting operations and seriously restricts on-site operation efficiency. Summary of the invention

[0005] Aiming at the problem in the prior art that the traditional steel straight gangway ladder can no longer meet the needs of on-site personnel handover and material loading and unloading due to the large height difference of the platform, the utility model provides a bendable gangway ladder suitable for connecting large height difference platforms to solve such problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bendable gangway ladder suitable for connecting platforms with large height differences, comprising: a main gangway ladder hinged to an adjusting gangway ladder at one end through a connecting shaft, and the other end of which is overlapped with a landing platform; an adjusting gangway ladder fixedly connected to a starting platform, and having an upper positioning block and a lower positioning block at one end of the adjusting gangway ladder hinged to the main gangway ladder; and an adjusting mechanism, comprising an adjusting plate and an adjusting screw; the adjusting plate is rotatably arranged on the connecting shaft, and is provided with a plurality of adjusting holes; the adjusting screw comprises a first adjusting screw and a second adjusting screw; the first adjusting screw passes through the corresponding adjusting hole and is connected to a fixed opening on the main gangway ladder, and the second adjusting screw passes through the corresponding adjusting hole and is connected to an upper positioning block or a lower positioning block, so as to adjust the angle between the main gangway ladder and the adjusting gangway ladder and perform limit fixing.

[0007] Furthermore, the adjustment plate is a fan-shaped structure, a rotation hole is provided at the center of the adjustment plate, and the rotation hole is sleeved on the connecting shaft.

[0008] Furthermore, a plurality of adjustment holes are provided on the fan surface of the adjustment plate, and the plurality of adjustment holes are at the same distance from the center of the circle.

[0009] Furthermore, a limit block is provided on the adjusting gangway ladder, which abuts against the end of the adjusting plate, thereby limiting the rotation angle between the main gangway ladder and the adjusting gangway ladder.

[0010] Furthermore, a second pin hole is provided at one end of the adjusting gangway, which is aligned with the first pin hole of the main gangway and inserted into the connecting shaft to achieve hinged connection between the two.

[0011] Furthermore, the upper positioning block is provided with an upper positioning hole, the lower positioning block is provided with a lower positioning hole, and the distances between the upper positioning hole and the lower positioning hole and the second pin hole are the same.

[0012] Furthermore, the end of the adjustable gangway is fixedly connected to the starting platform via a fixed ear plate.

[0013] Furthermore, a plurality of the adjustable gangways are provided according to the spacing between the platforms, adjacent adjustable gangways are hinged, and the rotation angle is limited by an adjusting mechanism.

[0014] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0015] (1) The bendable gangway ladder of the utility model is designed with an adjustment mechanism, which allows the gangway ladder to bend upward or downward according to the height difference between the platforms on both sides, thereby adapting to the connection requirements of platforms with different height differences; this design enables the gangway ladder to flexibly cope with various height differences, thereby improving its applicability in different construction environments.

[0016] (2) The bendable gangway ladder of the utility model avoids a sharp increase in the slope of the main gangway ladder with a longer span by adjusting the angle between the main gangway ladder and the adjusting gangway ladder, thereby reducing the risk of personnel and materials going up and down; this design effectively avoids the difficulty of personnel and materials going up and down due to excessive height difference, thereby improving operation safety.

[0017] (3) The bendable gangway of the utility model allows for direct connection between the wind turbine installation vessel and the wind turbine foundation platform, reducing the need for round trip transportation by transport vessel due to height differences, thereby saving on-site construction resources and improving wind turbine hoisting efficiency, which has great technical promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a bendable gangway ladder suitable for connecting platforms with large height differences in an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjustment mechanism in the embodiment of the utility model;

[0020] Figure 3 This is an exploded schematic diagram of the adjustment mechanism in the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of a state in which the bendable gangway ladder in the embodiment of the utility model is bent upward;

[0022] Figure 5 This is a schematic diagram of the operation of the adjusting mechanism in the embodiment of the utility model adjusting the gangway ladder to bend upward;

[0023] Figure 6 This is a schematic diagram of a state in which the bendable gangway ladder in the embodiment of the utility model is bent downward;

[0024] Figure 7 This is a schematic diagram of the operation of the adjusting mechanism in the embodiment of the utility model adjusting the gangway ladder to bend downward;

[0025] Figure 8 This is a schematic diagram of a state in which the gangway in the embodiment of the utility model is bent downward and applied to a platform with a large height difference;

[0026] Fig. 9 It is a schematic diagram of the state in which the gangway in the embodiment of the utility model is bent upward and applied to a platform with a large height difference.

[0027] In all the drawings, the same figure marks represent the same technical features, specifically: 1-main gangway, 1a-lifting ear, 1b-fixed opening, 2-adjusting gangway, 2a-limiting block, 2b-upper positioning block; 2c-lower positioning block, 3-adjusting mechanism, 3a-adjusting plate, 3b-adjusting screw, 4-connecting shaft, 5-starting platform, 5a-fixed ear plate, 6-landing platform. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figure 1-9 As shown, the utility model provides a bendable gangway ladder suitable for connecting platforms with large height differences, including a main gangway ladder 1, an adjusting gangway ladder 2 and an adjusting mechanism 3. One end of the main gangway ladder 1 is hinged to the adjusting gangway ladder 2 through a connecting shaft 4, and the other end is overlapped with a landing platform 6. The other end of the adjusting gangway ladder 2 is fixedly connected to the starting platform 5, and an upper positioning block 2b and a lower positioning block 2c are provided at the end hinged to the main gangway ladder 1; an upper positioning hole is provided on the upper positioning block 2b, and a lower positioning hole is provided on the lower positioning block 2c. The adjusting mechanism 3 includes an adjusting plate 3a and an adjusting screw 3b. The adjusting plate 3a is a fan-shaped structure, and a rotating hole is provided at the center of the circle, and a plurality of adjusting holes are provided on the fan surface. The rotating hole is sleeved on the connecting shaft 4, and the plurality of adjusting holes are at the same distance from the center of the circle; the adjusting screw 3b is provided in two groups, including a first adjusting screw and a second adjusting screw. When connecting the platforms, the end of the adjusting gangway 2 is hinged to the starting platform 5; the main gangway 1 and the adjusting gangway 2 are synchronously hoisted to between the starting platform 5 and the landing platform 6, one end of the main gangway 1 is overlapped on the landing platform 6, and the adjusting gangway 2 is bent upward or downward according to the height difference between the platforms, and the other end of the adjusting gangway 2 is fixedly connected to the starting platform 5 after being rotated to a certain angle; a first adjusting screw is passed through the corresponding adjusting hole and threadedly connected to the fixed opening 1b on the main gangway 1, and a second adjusting screw is passed through the corresponding adjusting hole and threadedly connected to the upper positioning hole or the lower positioning hole, so as to realize the limited fixed connection between the main gangway 1 and the adjusting gangway 2. The gangway of the utility model reduces the height difference between the platforms by adjusting the angle between the main gangway 1 and the adjusting gangway 2, effectively solves the problem of difficulty in getting on and off of personnel and materials caused by the large height difference between the wind turbine installation ship and the wind turbine foundation platform, improves the wind turbine installation efficiency, and has a good technical promotion value.

[0030] like Figure 1-3 As shown, in the embodiment of the utility model, the main gangway 1 is a truss structure with a long span, which serves as the main connection channel between platforms; a first pin hole is provided at one end of the main gangway 1, and the first pin hole is inserted through the connecting shaft 4 to achieve the connection with the adjustment gangway 2. A fixed opening 1b is provided at the rear end of the first pin hole, which is used to cooperate with the adjustment mechanism 3 to achieve the rotation angle between the limited fixing of the main gangway 1 and the adjustment gangway 2.

[0031] The adjustable gangway 2 is a truss structure with a short span. It reduces the height difference between platforms by a large elevation angle or a large depression angle, avoids a sharp increase in the slope of the main gangway 1 with a longer span, and reduces the risk of personnel and materials going up and down. A second pin hole is provided at one end of the adjustable gangway 2, which is aligned with the first pin hole of the main gangway 1 and inserted into the connecting shaft 4 to achieve hinged connection between the two. An upper positioning block 2b and a lower positioning block 2c are fixedly provided at the upper and lower ends of the second pin hole, respectively. The upper positioning block 2b is provided with an upper positioning hole, and the lower positioning block 2c is provided with a lower positioning hole. The upper positioning hole and the lower positioning hole are at the same distance from the second pin hole.

[0032] Furthermore, a limit block 3a is provided at the front end of the second pin hole, which contacts the adjustment plate through the top and bottom parts respectively, thereby limiting the rotation angle between the main gangway 1 and the adjustment gangway 2 to avoid deviation caused by excessive rotation angle between the two.

[0033] The adjusting mechanism 3 includes an adjusting plate 3a and an adjusting screw 3b. The adjusting plate 3a is a fan-shaped structure with a rotating hole at the center of the circle and multiple adjusting holes on the fan surface. The rotating hole is sleeved on the connecting shaft 4, and the multiple adjusting holes are at the same distance from the center of the circle. The adjusting screw 3b is provided with two groups, including a first adjusting screw and a second adjusting screw. When adjusting the angle between the main gangway 1 and the adjusting gangway 2, the angle between the main gangway 1 and the adjusting gangway 2 is calculated by the distance between the connection points and the height difference between the platforms, and the first adjusting screw is passed through the corresponding adjusting hole and threadedly connected to the fixed opening 1b on the main gangway 1, so that when the adjusting gangway 2 rotates around the connecting shaft 4 to the angle, the end of the adjusting plate 3a contacts the limit block 2a, limiting the further rotation of the adjusting gangway 2, thereby avoiding the main gangway 1 and the adjusting gangway 2 from colliding, deviating or even being damaged due to excessive rotational inertia; after the adjusting gangway 2 is connected to the starting platform 5, the second adjusting screw is passed through the corresponding adjusting hole and threadedly connected to the upper positioning hole or the lower positioning hole, thereby realizing the limited fixed connection between the main gangway 1 and the adjusting gangway 2.

[0034] When the bendable gangway ladder of the utility model is hoisted and transported, the main gangway ladder 1 and the section gangway ladder 2 are provided with lifting ears 1a at the top, so as to achieve connection with the sling, and facilitate the transportation work.

[0035] The construction of the bendable gangway ladder of the utility model includes the following steps:

[0036] S100: Determine the bending angle of the gangway according to the height difference of the platforms on both sides, and use the first adjusting screw to pass through the corresponding adjusting hole and threadedly connect with the fixed opening 1b on the main gangway 1, so as to fix the adjusting plate 3a to the main gangway 1; the position of the adjusting plate 3a after fixation should be able to meet the following requirements: if the adjusting section needs to bend downward, the adjusting plate 3a can just press against the limit block 2a from below to stop it from moving downward after the adjusting gangway 2 is bent in place; if the adjusting section needs to bend upward, the adjusting plate 3a can just press against the limit block 2a from above to stop it from moving upward after the adjusting gangway 2 is bent in place;

[0037] S200; The gangway ladder is hoisted by double hooks. When the lifting lug 1a is selected, if the starting platform 5 is higher than the landing platform 6, the adjusting gangway ladder 2 needs to be bent downward, and the two lifting points are all hung on the lifting lug 1a on the main gangway ladder 1; if the starting platform 5 is lower than the landing platform 6, the adjusting gangway ladder needs to be bent upward, and the two lifting points are respectively selected from the lifting lugs 1a of the main gangway ladder 1 and the adjusting gangway ladder 2 for hanging;

[0038] S300: When the adjusting gangway 2 needs to bend downward, the main gangway 1 is lifted by force, and the adjusting gangway 2 rotates downward under the action of its own weight until the adjusting plate 3a is driven to abut against the limit block 2a and then stops rotating; when the adjusting gangway 2 needs to bend upward, the lifting point on the adjusting gangway 2 is first lifted, and the adjusting gangway 2 is lifted by force and then rotates upward until the adjusting plate 3a abuts against the limit block 2a and then stops rotating;

[0039] S400: After the adjusting gangway ladder 2 is rotated into place, according to the bending condition of the gangway ladder, the second adjusting screw is passed through the corresponding adjusting hole and threadedly connected with the upper positioning hole or the lower positioning hole, so that the main gangway ladder 1 and the adjusting gangway ladder 2 are completely relatively fixed, and then the gangway ladder is lifted as a whole for installation;

[0040] S500: After the end of the adjustable gangway ladder 2 is fixed to the starting platform 5 through the fixing ear plate 5a, the main gangway ladder 1 is overlapped to the landing platform 6 to complete the gangway ladder erection.

[0041] The bendable gangway ladder of the utility model can be provided with a plurality of adjustable gangway ladders 2 according to the spacing between platforms, adjacent adjustable gangway ladders 2 are hinged, and the rotation angle is limited by the adjusting mechanism 3.

[0042] The bendable gangway ladder of the utility model is designed with an adjustment mechanism 3, which allows the gangway ladder to bend upward or downward according to the height difference between the platforms on both sides, thereby adapting to the connection requirements of platforms with different height differences; this design enables the gangway ladder to flexibly cope with various height differences, thereby improving its applicability in different construction environments.

[0043] The bendable gangway ladder of the utility model avoids a sharp increase in the slope of the main gangway ladder 1 with a longer span by adjusting the angle between the main gangway ladder 1 and the adjustment gangway ladder 2, thereby reducing the risk of people and materials going up and down; this design effectively avoids the difficulty of people and materials going up and down due to excessive height difference, and improves operation safety.

[0044] The bendable gangway of the utility model allows direct connection between the wind turbine installation vessel and the wind turbine foundation platform, reducing the need for round-trip transportation by transport ship due to height difference problems, thereby saving on-site construction resources, improving wind turbine hoisting efficiency, and having great technology promotion value.

[0045] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bendable gangway suitable for connecting platforms with large height differences, characterized in that: include: A main gangway (1) is hingedly connected to the adjusting gangway (2) at one end through a connecting shaft (4), and the other end is overlapped with the landing platform (6); An adjustable gangway (2) fixedly connected to the starting platform (5), wherein one end of the adjustable gangway (2) hinged to the main gangway (1) is provided with an upper positioning block (2b) and a lower positioning block (2c); and an adjusting mechanism (3), comprising an adjusting plate (3a) and an adjusting screw (3b); the adjusting plate (3a) is rotatably arranged on a connecting shaft (4) and is provided with a plurality of adjusting holes; the adjusting screw (3b) comprises a first adjusting screw and a second adjusting screw; The first adjusting screw passes through the corresponding adjusting hole and is connected to the fixed opening (1b) on the main gangway (1), and the second adjusting screw passes through the corresponding adjusting hole and is connected to the upper positioning block (2b) or the lower positioning block (2c), thereby adjusting the angle between the main gangway (1) and the adjusting gangway (2) and performing limit fixing.

2. The bendable gangway ladder suitable for connecting platforms with large height differences according to claim 1, characterized in that: The adjustment plate (3a) is a fan-shaped structure, a rotation hole is provided at the center of the circle, and the rotation hole is sleeved on the connecting shaft (4).

3. The bendable gangway ladder suitable for connecting platforms with large height differences according to claim 2, characterized in that: The fan surface of the adjustment plate (3a) is provided with a plurality of adjustment holes, and the plurality of adjustment holes are at the same distance from the center of the circle.

4. A bendable gangway ladder suitable for connecting platforms with large height differences according to any one of claims 1 to 3, characterized in that: The adjusting gangway (2) is provided with a limit block (2a) which abuts against the end of the adjusting plate, thereby limiting the rotation angle between the main gangway (1) and the adjusting gangway (2).

5. A bendable gangway ladder suitable for connecting platforms with large height differences according to any one of claims 1 to 3, characterized in that: A second pin hole is provided at one end of the adjusting gangway (2), which is aligned with the first pin hole of the main gangway (1) and inserted into the connecting shaft (4) to achieve hinged connection between the two.

6. The bendable gangway ladder suitable for connecting platforms with large height differences according to claim 5, characterized in that: The upper positioning block (2b) is provided with an upper positioning hole, and the lower positioning block (2c) is provided with a lower positioning hole, and the distances between the upper positioning hole and the lower positioning hole and the second pin hole are the same.

7. A bendable gangway ladder suitable for connecting platforms with large height differences according to any one of claims 1 to 3, characterized in that: The end of the adjustable gangway (2) is fixedly connected to the starting platform (5) via a fixed ear plate (5a).

8. A bendable gangway ladder suitable for connecting platforms with large height differences according to any one of claims 1 to 3, characterized in that: A plurality of the adjustable gangways (2) are provided according to the spacing between platforms, and adjacent adjustable gangways (2) are hinged and the rotation angle is limited by an adjusting mechanism (3).

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