Locking device for liftable offshore trestle

Abstract

The utility model relates to the technical field of maritime work equipment, and provides a locking device for a liftable offshore trestle. The locking device comprises an L-shaped crank arm and a locking air cylinder, the corner position of the L-shaped crank arm is rotationally connected with the clamping seat; the two ends of the locking air cylinder are hinged to the right end of the clamping base and the right end of the L-shaped crank arm through pin shafts correspondingly. The left end of the L-shaped crank arm is in contact connection with the lifting tower, the locking air cylinder drives the L-shaped crank arm to rotate, and the friction force between the left end of the L-shaped crank arm and the lifting tower is increased to achieve locking. The L-shaped crank arm is pushed through the locking air cylinder, the friction force between the left end of the L-shaped crank arm and the lifting tower is increased, locking is achieved, the structure is simple, and operation is convenient; the L-shaped crank arm is rotationally connected with the clamping seat in a pin shaft hinging mode, so that rotation is more flexible and smoother, and the clamping stagnation phenomenon is not prone to occurring; the friction plate is installed at the left end of the L-shaped crank arm, the friction plate is of a cambered surface structure, the friction plate can be better attached to the surface of the lifting tower, friction force is improved, and the locking effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering equipment, in particular to a locking device for a liftable offshore trestle. Background Art

[0002] During the inspection, repair and maintenance of wind power platforms, the operation and maintenance ship equipped with a boarding ladder plays an important role. The operation and maintenance personnel use the equipment and tools on the mother ship to board the wind power platform through the gangway, or the offshore pier, and conduct a comprehensive inspection and maintenance of the wind power platform's generator sets, electrical equipment, mechanical parts, etc. to ensure the normal operation and power generation efficiency of the wind power platform.

[0003] In order to meet the operation and maintenance needs of wind power platforms at different heights, the wind power operation and maintenance mother ship needs to be equipped with a lifting tower, and the offshore trestle is raised and lowered along the lifting tower. In the current wind power operation and maintenance mother ships, most of the offshore trestle and the lifting tower are not equipped with effective locking protection devices. In the offshore operation environment, the wind power operation and maintenance mother ship is often affected by natural forces such as wind and waves, resulting in shaking and swaying. The connection between the gangway and the lifting tower without a locking device will become unstable, prone to relative displacement or shaking, increasing the safety risk of the operation and maintenance personnel when getting on and off the ship, and may cause accidents such as slips and falls. At the same time, the connection between the gangway and the lifting tower without a locking device is unstable, and the operation and maintenance personnel will feel unstable and shaking when getting on and off the ship, affecting the speed and accuracy of the operation. Especially in emergency situations, such as when rapid evacuation or emergency repairs are required, unstable connections will seriously hinder the rapid response and action capabilities of the operation and maintenance personnel. In addition, long-term shaking and unstable connections may cause wear and damage to the connecting parts, which in turn affects the structural stability and service life of the entire mother ship.

[0004] Therefore, when designing and building a wind power operation and maintenance mother ship with a gangway, the importance and necessity of the locking device must be fully considered to ensure a stable connection between the gangway and the lifting tower, and to ensure the safety and smooth progress of the operation and maintenance operations. Utility Model Content

[0005] In order to solve the problems existing in the background technology, the utility model provides a locking device for a liftable offshore pier, which includes a lifting tower and an offshore pier lifting platform, the lifting tower is provided with a lifting track, the offshore pier lifting platform is slidably connected to the lifting track through a clamping seat, a locking device body is installed in the clamping seat, the locking device body includes an L-shaped curved arm and a locking cylinder; the corner position of the L-shaped curved arm is arranged to be rotatably connected to the clamping seat; the two ends of the locking cylinder are respectively hinged to the clamping seat and the right end of the L-shaped curved arm through a pin shaft; the left end of the L-shaped curved arm is in contact with the lifting tower, and the L-shaped curved arm is driven by the locking cylinder to rotate, thereby increasing the friction between the left end of the L-shaped curved arm and the lifting tower to achieve locking.

[0006] In a preferred solution, a friction plate is installed at the left end of the L-shaped crank arm.

[0007] In a preferred solution, the friction plate has a curved surface structure.

[0008] In a preferred solution, the friction plate is made of rubber material.

[0009] In a preferred solution, the offshore trestle lifting platform is provided with a cross beam, and the clamping seat is installed at the end of the cross beam.

[0010] In a preferred embodiment, a hinge hole is provided at a corner of the L-shaped curved arm, and a pin hole is provided at a corresponding position of the clamping seat. The hinge hole and the pin hole are connected via a pin shaft to achieve a rotational connection between the L-shaped curved arm and the clamping seat.

[0011] The beneficial effects achieved by the utility model are:

[0012] The utility model provides a locking device for a liftable offshore trestle, which effectively solves the problem of lack of effective locking protection between the offshore trestle and the lifting tower in the prior art. By installing the locking device, the stable connection of the offshore trestle lifting platform on the lifting tower is ensured, thereby greatly improving the safety of operation and maintenance operations, as follows:

[0013] First, the utility model designs an L-shaped curved arm and a locking cylinder for use together, and uses the locking cylinder to push the L-shaped curved arm to increase the friction between the left end of the L-shaped curved arm and the lifting tower to achieve locking. This design is not only simple in structure and easy to operate, but also has a significant locking effect;

[0014] Second, the rotation connection between the L-shaped crank arm and the clamping seat adopts a pin-shaft hinge method, which makes the rotation more flexible and smooth, and is not prone to jamming;

[0015] Third, a friction plate is installed at the left end of the L-shaped crank arm to further enhance the locking effect. The friction plate has a curved surface structure, which can better fit the surface of the lifting tower and improve the friction. At the same time, the friction plate is made of rubber material, which not only ensures a sufficient friction coefficient, but also has a certain elasticity and wear resistance, and can be used for a long time without being easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the connection structure of the lifting tower, the offshore trestle lifting platform and the locking device body;

[0017] Figure 2 It is a schematic diagram of the connection structure between the offshore trestle lifting platform and the locking device body;

[0018] Figure 3 It is a schematic diagram of the structure of the offshore trestle lifting platform;

[0019] Figure 4is a schematic diagram of the main structure of the locking device;

[0020] Figure 5 It is a rear view structural diagram of the connection between the offshore trestle lifting platform and the locking device body;

[0021] Figure 6 It is a schematic diagram of the connection structure between the lifting tower and the offshore pier.

[0022] Numbers in the figure:

[0023] 1. Lifting tower; 2. Offshore trestle lifting platform; 21. Crossbeam; 22. Clamping seat; 4. Offshore trestle; 5. Locking device body; 51. Locking cylinder; 52. L-shaped curved arm; 53. Hinge hole; 54. Friction plate. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the utility model is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] Reference Figure 1-Figure 6 The utility model provides a locking device for a liftable offshore trestle 4, which includes a lifting tower 1 and an offshore trestle lifting platform 2, wherein the offshore trestle lifting platform 2 is provided with a cross beam 21, and a clamping seat 22 is installed at the end of the cross beam 21. The lifting tower 1 is provided with a lifting track, and the offshore trestle lifting platform 2 is slidably connected to the lifting track through the clamping seat 22. A locking device body 5 is installed in the clamping seat 22, and the locking device body 5 includes an L-shaped curved arm 52 and a locking cylinder 51; the corner position of the L-shaped curved arm 52 is provided to be rotatably connected to the clamping seat 22; a hinge hole 53 is provided at the corner position of the L-shaped curved arm 52, and a pin hole is correspondingly provided on the clamping seat 22, and the hinge hole 53 is connected to the pin hole through a pin shaft to realize the rotation connection between the L-shaped curved arm 52 and the clamping seat 22. The two ends of the locking cylinder 51 are respectively hinged to the clamping seat 22 and the right end of the L-shaped curved arm 52 through a pin shaft; the left end of the L-shaped curved arm 52 is in contact with the lifting tower 1, and the locking cylinder 51 drives the L-shaped curved arm 52 to rotate, thereby increasing the friction between the left end of the L-shaped curved arm 52 and the lifting tower 1 to achieve locking. A friction plate 54 is installed at the left end of the L-shaped curved arm 52, and the friction plate 54 preferably has a curved surface structure and is made of rubber material.

[0026] When the utility model is in use, when the offshore pier lifting platform 2 needs to carry the offshore pier 4 for lifting, the locking cylinder 51 contracts, driving the L-shaped curved arm 52 to rotate in a direction away from the lifting tower 1, so that the friction plate 54 is separated from the lifting tower 1, and the locking device is in a released state, and the offshore pier 4 is raised or lowered. When the offshore pier 4 reaches the designated position and needs to be locked, the locking cylinder 51 extends, driving the L-shaped curved arm 52 to rotate in a direction close to the lifting tower 1, increasing the pressure between the friction plate 54 and the lifting tower 1, so that the friction plate 54 is in close contact with the lifting tower 1, and the locking between the offshore pier lifting platform 2 and the lifting tower 1 is achieved through the friction between the friction plate 54 and the lifting tower 1.

[0027] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking device for a liftable offshore trestle, comprising a lifting tower (1) and an offshore trestle lifting platform (2), wherein the lifting tower (1) is provided with a lifting track, and the offshore trestle lifting platform (2) is slidably connected to the lifting track via a clamping seat (22), characterized in that: A locking device body (5) is installed in the clamping seat (22), and the locking device body (5) comprises an L-shaped curved arm (52) and a locking cylinder (51); The corner position of the L-shaped curved arm (52) is rotatably connected to the clamping seat (22); The two ends of the locking cylinder (51) are respectively hinged to the clamping seat (22) and the right end of the L-shaped curved arm (52) through a pin shaft; The left end of the L-shaped curved arm (52) is in contact with the lifting tower (1), and the locking cylinder (51) drives the L-shaped curved arm (52) to rotate, thereby increasing the friction between the left end of the L-shaped curved arm (52) and the lifting tower (1) to achieve locking.

2. A locking device for a liftable offshore trestle according to claim 1, characterized in that: A friction plate (54) is installed at the left end of the L-shaped crank arm (52).

3. A locking device for a liftable offshore trestle according to claim 2, characterized in that: The friction plate (54) has a curved surface structure.

4. A locking device for a liftable offshore trestle according to claim 2, characterized in that: The friction plate (54) is made of rubber material.

5. The locking device for a liftable offshore trestle according to claim 1, characterized in that: The offshore trestle lifting platform (2) is provided with a crossbeam (21), and a clamping seat (22) is installed at the end of the crossbeam (21).

6. The locking device for a liftable offshore trestle according to claim 1, characterized in that: A hinge hole (53) is provided at a corner of the L-shaped curved arm (52), and a pin hole is correspondingly provided on the clamping seat (22). The hinge hole (53) and the pin hole are connected via a pin shaft, thereby realizing a rotational connection between the L-shaped curved arm (52) and the clamping seat (22).

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