Extensible platform of offshore crane

Abstract

The utility model discloses an extensible platform of an offshore crane, and relates to the technical field of offshore cranes, the extensible platform of the offshore crane comprises a crane body, a stabilizing seat fixedly arranged below the crane body, and a supporting table arranged below the stabilizing seat, the extension mechanism comprises an extension plate fixedly connected with the supporting table, a fixing shaft is arranged on the extension plate, a connecting piece is rotatably arranged on the fixing shaft, a rotating shaft is rotatably arranged on the connecting piece, an extension sleeve is rotatably arranged on the rotating shaft, a telescopic plate is slidably arranged on the inner side of the extension sleeve, and a limiting block is arranged on the telescopic plate. A groove hole is formed in the extension plate and matched with the limiting block to be used for connecting the extension plate and the telescopic plate. The extensible platform of the offshore crane can be folded in the consignment process, consignment is convenient and fast, and when consignment is conducted to an operation point, the extensible platform is expanded, so that buoyancy is increased, and then the bearing capacity in the lifting process is kept.

Description

Technical Field

[0001] This utility model relates to the field of offshore crane technology, specifically to an expandable platform for offshore cranes. Background Technology

[0002] With the acceleration of global marine resource development, offshore cranes, as a core component of marine engineering equipment, play an irreplaceable role in fields such as offshore wind power installation, offshore oil platform construction, and cross-sea bridge construction. Offshore cranes are typically deployed on floating carriers such as semi-submersible platforms, jack-up platforms, or floating barges to perform lifting, transfer, and installation operations on heavy objects.

[0003] The operating environment of offshore cranes has significant unique characteristics. Compared with the land environment, dynamic factors such as wind, waves, and currents in the marine environment will generate continuous dynamic loads on the crane platform. At the same time, as marine engineering develops towards the deep sea, the water depth of the operating area is constantly increasing, and the operating radius and lifting height that the crane needs to cover are also significantly increased.

[0004] Currently, most offshore crane platforms adopt a fixed design, which increases load-bearing capacity by increasing platform size and improving material strength. However, since the loads of offshore cranes vary in size, the platform that provides floating support needs to provide stable load-bearing capacity. If the floating area of ​​the platform is increased indiscriminately, the platform will experience greater resistance during transport.

[0005] Therefore, in response to the above problems, the applicant needs to design a scalable platform for offshore cranes to solve the problems. Utility Model Content

[0006] The purpose of this invention is to provide an expandable platform for offshore cranes to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an expandable platform for an offshore crane, comprising a crane body, wherein a stabilizing base is fixedly installed below the crane body.

[0008] It also includes: a support platform fixedly installed below the stabilizing base, and an extension mechanism integrally provided on both sides of the support platform for expanding the area of ​​the support platform. The extension mechanism includes an extension plate fixedly connected to the support platform, and a fixed shaft is fixedly installed on the extension plate. A connector is rotatably installed on the fixed shaft, and a rotating shaft is rotatably installed on the connector. An extension sleeve is rotatably installed on the rotating shaft, and a telescopic plate is slidably installed on the inner side of the extension sleeve. A limit block is provided on the telescopic plate, and a slot is provided on the extension plate. The slot and the limit block are used to connect the extension plate and the telescopic plate.

[0009] Furthermore, a locking component is provided in the slot, and a limiting hole is provided on the limiting block, and the limiting hole cooperates with the locking component to lock the limiting block and the slot.

[0010] Through the above structural design, the locking component and the limiting hole can be used to achieve rigid locking of the telescopic plate and the extension plate, avoiding the decrease in stability caused by loosening of the connection under dynamic load during transportation.

[0011] Furthermore, the locking assembly includes a hollow sleeve fixedly connected to the extension plate, and a slide rod is slidably disposed inside the hollow sleeve. A fixing plate is fixedly disposed at one end of the slide rod, and the outer diameter of the fixing plate is smaller than the inner diameter of the limiting hole.

[0012] Through the above structural design, the sliding fit between the hollow sleeve and the slide bar allows the locking action to be completed quickly through linear motion, reducing operational complexity. The design of the fixed plate diameter being smaller than that of the limiting hole not only ensures the error tolerance when the lock tongue is accurately inserted into the limiting hole, but also reduces wear problems after long-term use through optimized pressure distribution on the contact surface.

[0013] Furthermore, a reset spring is fixedly installed on the fixing plate, and the end of the reset spring away from the fixing plate is fixedly connected to the inner wall of the slot.

[0014] Through the above structural design, the introduction of the return spring enables the locking assembly to have an automatic reset function, which can immediately restore the locked state after the external operating force is released, preventing accidental unlocking due to human negligence or vibration.

[0015] Furthermore, a push-pull handle is fixedly provided at the end of the slide rod away from the fixed plate, and the push-pull handle is used to drive the slide rod to move.

[0016] Through the above structural design, the external design of the push-pull handle conforms to the principles of ergonomics, allowing the operator to complete the opening and closing of the locking mechanism with less effort, significantly improving work efficiency.

[0017] Furthermore, a reinforcing plate is fixedly installed on the crane body, and the reinforcing plate is fixedly connected to the stabilizing base.

[0018] Through the above structural design, the triangular stable structure formed by the reinforcing plate effectively transmits the overturning moment of the crane body to the stable seat, greatly reducing the risk of stress concentration.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the expandable platform of the offshore crane can be folded up during the transportation process, making transportation convenient; after being transported to the work site, it can be expanded to increase buoyancy and thus maintain the load-bearing capacity during the lifting process. The specific details are as follows:

[0020] When the expandable platform of this offshore crane needs to be used for transport, the telescopic plate is retracted into the extension sleeve, and the extension sleeve is rotated using a fixed shaft and a rotating shaft. The rotation of the extension sleeve will drive the limit block to move into the slot, and the slot and the limit block are locked together by a locking assembly, thus allowing transport. After transporting to the target location, the locking assembly is released, which will cause the extension mechanism to open, thereby increasing buoyancy and maintaining the load-bearing capacity during the lifting process.

[0021] When in use, the expandable platform of this offshore crane is operated by pulling a push-pull handle with external force. The push-pull handle facilitates the movement of the slide bar, which in turn moves the fixed plate. The movement of the fixed plate compresses the return spring, which generates elastic force. When the limit block moves into the slot, the external force is released, and the elastic force of the return spring pushes the fixed plate into the limit hole, thereby securely locking the slot and the limit block. The operation is convenient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the extension mechanism of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0025] Figure 4 This is a three-dimensional structural diagram of the locking component of this utility model.

[0026] In the diagram: 1. Crane body; 2. Extension mechanism; 10. Stabilizing seat; 11. Support platform; 12. Reinforcing plate; 20. Extension plate; 21. Fixed shaft; 22. Connecting piece; 23. Rotating shaft; 24. Extension sleeve; 25. Telescopic plate; 26. Limiting block; 27. Limiting hole; 28. Slot; 29. ​​Locking assembly; 290. Hollow sleeve; 291. Slide rod; 292. Fixed plate; 293. Return spring; 294. Push-pull handle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-4As shown, the present invention discloses an expandable platform for an offshore crane, comprising a crane body 1, with a stabilizing base 10 fixedly disposed below the crane body 1, a reinforcing plate 12 fixedly disposed on the crane body 1, and the reinforcing plate 12 being fixedly connected to the stabilizing base 10. It also includes a support platform 11 fixedly disposed below the stabilizing base 10, and extension mechanisms 2 integrally disposed on both sides of the support platform 11 for expanding the area of ​​the support platform 11. The extension mechanism 2 includes an extension plate 20 fixedly connected to the support platform 11, a fixed shaft 21 fixedly disposed on the extension plate 20, a connecting member 22 rotatably disposed on the fixed shaft 21, a rotating shaft 23 rotatably disposed on the connecting member 22, an extension sleeve 24 rotatably disposed on the rotating shaft 23, and a telescopic plate 25 slidably disposed on the inner side of the extension sleeve 24. A limiting block 26 is disposed on the telescopic plate 25, and a slot 28 is disposed on the extension plate 20, the slot 28 cooperating with the limiting block 26 to connect the extension plate 20 and the telescopic plate 25.

[0029] With the above structural design, when transport is required, the telescopic plate 25 is retracted into the extension sleeve 24, and the extension sleeve 24 is rotated using the fixed shaft 21 and the rotating shaft 23. The rotation of the extension sleeve 24 will drive the limit block 26 to move, moving the limit block 26 into the slot 28, and locking the slot 28 and the limit block 26 through the locking assembly 29, thereby transporting the goods. When the goods are transported to the target position, the locking assembly 29 is released, which will cause the extension mechanism 2 to open, thereby increasing the buoyancy and maintaining the load-bearing capacity during the lifting process.

[0030] A locking component 29 is provided inside the slot 28. A limiting hole 27 is provided on the limiting block 26, and the limiting hole 27 cooperates with the locking component 29 to lock the limiting block 26 and the slot 28. The locking component 29 includes a hollow sleeve 290 fixedly connected to the extension plate 20, and a slide rod 291 is slidably provided inside the hollow sleeve 290. A fixing plate 292 is fixedly provided at one end of the slide rod 291, and the outer diameter of the fixing plate 292 is smaller than the inner diameter of the limiting hole 27. A return spring 293 is fixedly provided on the fixing plate 292, and the end of the return spring 293 away from the fixing plate 292 is fixedly connected to the inner wall of the slot 28. A push-pull handle 294 is fixedly provided at the end of the slide rod 291 away from the fixing plate 292, and the push-pull handle 294 is used to drive the slide rod 291 to move.

[0031] With the above structural design, when in use, the push-pull handle 294 is pulled by external force, which facilitates the movement of the slide rod 291. The movement of the slide rod 291 causes the fixed plate 292 to move, and the movement of the fixed plate 292 compresses the return spring 293. The return spring 293 generates elastic force. When the limit block 26 moves into the slot 28, the restriction of the external force is released, and the elastic force of the return spring 293 will push the fixed plate 292 into the limit hole 27, thereby firmly locking the slot 28 and the limit block 26, making the operation convenient.

[0032] Working principle: When using the expandable platform of this offshore crane, when transport is required, the telescopic plate 25 is retracted into the extension sleeve 24, and the extension sleeve 24 is rotated using the fixed shaft 21 and the rotating shaft 23. The rotation of the extension sleeve 24 will drive the limit block 26 to move. At the same time, the push-pull handle 294 is pulled by external force. The push-pull handle 294 facilitates the movement of the slide rod 291. The movement of the slide rod 291 will drive the fixed plate 292 to move. The movement of the fixed plate 292 will compress the return spring 293. The return spring 293 generates elastic force. When the limit block 26 moves into the slot 28, the external force restriction is released. The elastic force of the return spring 293 will push the fixed plate 292 into the limit hole 27, thereby firmly locking the slot 28 and the limit block 26, facilitating transport. When transported to the target position, the locking assembly 29 is released, which will cause the extension mechanism 2 to open, thereby increasing buoyancy and maintaining the load-bearing capacity during the lifting process.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An expandable platform for an offshore crane, comprising a crane body (1) and a stabilizing base (10) fixedly disposed below the crane body (1). Its features are, Also includes: A support platform (11) is fixedly installed below the stabilizing base (10), and an extension mechanism (2) for expanding the area of ​​the support platform (11) is integrally provided on both sides of the support platform (11). The extension mechanism (2) includes an extension plate (20) fixedly connected to the support platform (11), and a fixed shaft (21) is fixedly provided on the extension plate (20). A connector (22) is rotatably provided on the fixed shaft (21), and a rotating shaft (23) is rotatably provided on the connector (22). An extension sleeve (24) is rotatably provided on the rotating shaft (23), and a telescopic plate (25) is slidably provided on the inner side of the extension sleeve (24). A limit block (26) is provided on the telescopic plate (25), and a slot (28) is provided on the extension plate (20). The slot (28) and the limit block (26) cooperate to connect the extension plate (20) and the telescopic plate (25).

2. The scalable platform for an offshore crane according to claim 1, characterized in that: A locking component (29) is provided in the slot (28), and a limiting hole (27) is provided on the limiting block (26). The limiting hole (27) cooperates with the locking component (29) to lock the limiting block (26) and the slot (28).

3. The scalable platform for an offshore crane according to claim 2, characterized in that: The locking assembly (29) includes a hollow sleeve (290) fixedly connected to the extension plate (20), and a slide rod (291) is slidably provided inside the hollow sleeve (290). A fixing plate (292) is fixedly provided at one end of the slide rod (291), and the outer diameter of the fixing plate (292) is smaller than the inner diameter of the limiting hole (27).

4. The scalable platform for an offshore crane according to claim 3, characterized in that: A reset spring (293) is fixedly installed on the fixed plate (292), and the end of the reset spring (293) away from the fixed plate (292) is fixedly connected to the inner wall of the slot (28).

5. The scalable platform for an offshore crane according to claim 4, characterized in that: A push-pull handle (294) is fixedly provided at the end of the slide rod (291) away from the fixed plate (292), and the push-pull handle (294) is used to drive the slide rod (291) to move.

6. The scalable platform for an offshore crane according to claim 1, characterized in that: A reinforcing plate (12) is fixedly installed on the crane body (1), and the reinforcing plate (12) is fixedly connected to the stabilizing seat (10).

Images